CN116953504B - A detection circuit and device - Google Patents

Abstract

The embodiment of the present application provides a detection circuit and device, the circuit comprising: a first switch module, one end of the first switch module is used to connect the first end of the power supply; a first selection branch, the input end of the first selection branch is connected to the other end of the first switch module, and the power supply end of the first selection branch is used to connect the second end of the power supply; a second selection branch, the second selection branch includes n groups of output ends, the control end of the second selection branch is connected to the output end of the first selection branch, the power supply end of the second selection branch is used to connect the second end of the power supply, each group of output ends of the second selection branch is respectively used to electrically connect the input end of the corresponding test motor in the target device, and different groups of output ends are electrically connected to different test motors; n is an integer greater than 0. The circuit can realize automatic testing of the motor of the target device by adjusting the motor position of the target device.

Description

A detection circuit and device

Technical Field

The present application relates to the field of automobile parts detection, and in particular to a detection circuit and device.

Background technique

Automobiles are gradually becoming automated and intelligent. Electric seats have the function of adjusting the seat position. Users can adjust the seat position to make it easier for them to drive or rest in the seat. The function of adjusting the seat position of electric seats can improve the comfort of the seats and provide users with a better car experience. In some technologies, the electric seat includes an external adjustment box, an MCU (Microcontroller Unit), and a motor. The basic working principle is that the external adjustment box inputs a control signal to the MCU, and then the MCU controls the motor to adjust the position of the electric seat.

It is necessary to test and evaluate the performance of all aspects of the electric seat. Among them, reliability is an important quality indicator of the electric seat. The reliability of the electric seat position adjustment refers to the repeatability of the electric seat to adjust the position without failure.

Currently, the reliability test of electric seat position adjustment needs to be done manually, such as manually operating an external adjustment box to repeatedly adjust the electric seat position. The manual testing method is costly and time-consuming, and lacks continuity and stability.

Summary of the invention

In view of this, the present application provides a detection circuit and device to help solve the problem in the prior art that the reliability detection of electric seat position adjustment needs to be completed manually, has high cost and long cycle, and lacks continuity and stability.

In a first aspect, an embodiment of the present application provides a detection circuit, including:

A first switch module, one end of which is used to connect to a first end of a power source;

a first selection branch, wherein an input end of the first selection branch is connected to the other end of the first switch module, and a power supply end of the first selection branch is used to connect to a second end of a power supply;

The second selection branch includes n groups of output terminals, the control terminal of the second selection branch is connected to the output terminal of the first selection branch, the power terminal of the second selection branch is used to connect the second terminal of the power supply, each group of output terminals of the second selection branch is respectively used to electrically connect to the input terminal of the corresponding test motor in the target device, and different groups of output terminals are electrically connected to different test motors; n is an integer greater than 0; wherein,

The first selection branch is used to control the n output ends of the second selection branch to output a first adjustment signal or a second adjustment signal when the first switch module is turned on; the first adjustment signal is used to trigger the test motor of the target device to adjust its position along a first target direction; the second adjustment signal is used to trigger the test motor of the target device to adjust its position along a second target direction; the first target direction is the reverse direction of the second target direction; different test motors correspond to different first target directions, and different test motors correspond to different second target directions;

The second selection branch is used to output the first adjustment signal or the second adjustment signal through the n groups of output terminals under the control of the first selection branch.

In a possible implementation manner of the first aspect, each group of output ends in the n groups of output ends includes a first output end and a second output end;

For each group of output ends of the second selection branch, the first output end of the group of output ends is used to electrically connect to the first input end of the target test motor, and the second output end of the group of output ends is used to electrically connect to the second input end of the target test motor; the target test motor is a test motor in the target device for being electrically connected to the group of output ends.

In a possible implementation manner of the first aspect, the second selection branch includes n groups of adjustment modules;

For each group of adjustment modules of the second selection branch, the first output end of the adjustment module is used to electrically connect to the first input end of the target test motor, and the second output end of the adjustment module is used to electrically connect to the second input end of the target test motor;

The control end in the adjustment module is connected to the corresponding output end in the first selection branch.

In a possible implementation manner of the first aspect, each group of adjustment modules includes a first adjustment module and a second adjustment module;

For each group of adjustment modules of the second selection branch, the output end of the first adjustment module in the adjustment modules is used to electrically connect to the first input end of the target test motor, and the output end of the second adjustment module in the adjustment modules is used to electrically connect to the second input end of the target test motor;

The first adjustment module control terminal in the adjustment module is connected to the corresponding first output terminal in the first selection branch; the second adjustment module control terminal in the adjustment module is connected to the corresponding second output terminal in the first selection branch.

In a possible implementation manner of the first aspect, when the value of n is 1, the first selection branch includes a selection module;

The input end of the selection module is connected to the other end of the first switch module, the power supply end of the selection module is used to connect to the second end of the power supply, the first output end of the selection module is connected to the control end of the first adjustment module, and the second output end of the selection module is connected to the control end of the second adjustment module;

The selection module is used to send a trigger signal to the control end of the first adjustment module at a first time of each preset cycle when the first switch module is turned on; and send a trigger signal to the control end of the second adjustment module at a second time of each preset cycle;

The first adjustment module is configured to output the first adjustment signal at a first adjustment time of each preset first adjustment period in which a trigger signal is received, and not output the first adjustment signal at a second adjustment time of each preset first adjustment period in which a trigger signal is received; the second adjustment time of the first adjustment period is other time in the first adjustment period except the first adjustment time;

The second adjustment module is used to output the second adjustment signal at the first adjustment time of each preset second adjustment period when a trigger signal is received, and not output the second adjustment signal at the second adjustment time of each preset second adjustment period when a trigger signal is received; the second adjustment time of the second adjustment period is the other time in the second adjustment period except the first adjustment time.

In a possible implementation manner of the first aspect, when the value of n is greater than 1, the first selection branch includes x-level selection groups, and the power supply end of the selection module included in each level of selection group is used to connect to the second end of the power supply; wherein the value of x is The i-th level selection group includes/> selection modules, i is an integer greater than 0 and not greater than x;

The first output end of the selection module in the first level selection group is connected to the control end of the corresponding first adjustment module, and the second output end of the selection module in the first level selection group is connected to the control end of the corresponding second adjustment module;

An input end of the selection module of the x-th selection group is connected to the other end of the first switch module;

The first output terminal of the selection module in the m-th selection group is connected to the input terminal of the corresponding selection module in the m-1-th selection group; the second output terminal of the selection module in the m-th selection group is connected to the input terminal of the corresponding selection module in the m-1-th selection group; m is an integer greater than 1 and not greater than x;

For each selection module, the input terminal of the selection module is electrically connected to only one of the first output terminal and the second output terminal at the same time.

In a possible implementation manner of the first aspect, the selection module of the x-th level selection group is configured to output a trigger signal through a first output terminal at a first time of each preset period corresponding to the x-th level selection group, and output a trigger signal through a second output terminal at a second time of each preset period of the x-th level selection group when the first switch module is turned on;

The selection module of the s-th selection group is used to, when receiving a trigger signal output by the s+1-th selection group, output the trigger signal through the first output terminal at the first time of each preset target period of the received trigger signal, and output the trigger signal through the second output terminal at the second time of each preset target period of the received trigger signal; wherein s is an integer greater than 1 and less than x; the preset target period is the preset period corresponding to the selection module of the s-th selection group; the preset target period is less than the preset period corresponding to the selection module of the x-th selection group;

The first adjustment module is configured to output the first adjustment signal at a first adjustment time of each preset first adjustment period in which a trigger signal is received, and not output the first adjustment signal at a second adjustment time of each preset first adjustment period in which a trigger signal is received; the second adjustment time of the first adjustment period is other time in the first adjustment period except the first adjustment time;

The second adjustment module is used to output the second adjustment signal at the first adjustment time of each preset second adjustment period when a trigger signal is received, and not output the second adjustment signal at the second adjustment time of each preset second adjustment period when a trigger signal is received; the second adjustment time of the second adjustment period is the other time in the second adjustment period except the first adjustment time.

In a possible implementation manner of the first aspect, the selection module includes a time relay.

In a possible implementation manner of the first aspect, the first adjustment module and the second adjustment module include a time relay.

In a possible implementation manner of the first aspect, the method further includes: at least one second switch;

The at least one second switch is arranged between an input terminal of at least one selection module in the first-stage selection group and a first output terminal or a second output terminal of a corresponding selection module in the second-stage selection group.

In a second aspect, an embodiment of the present application provides a detection device, comprising the detection circuit described in any one of the above-mentioned first aspects.

Using the solution provided in the embodiment of the present application, the detection circuit includes: a first switch module, a first selection branch and a second selection branch. One end of the first switch module is used to connect to the first end of the power supply; the input end of the first selection branch is connected to the other end of the first switch module, and the power supply end of the first selection branch is used to connect to the second end of the power supply; the second selection branch includes n groups of output ends, the control end of the second selection branch is connected to the output end of the first selection branch, and the power supply end of the second selection branch is used to connect to the second end of the power supply, and each group of output ends of the second selection branch is respectively used to electrically connect to the input end of each test motor in the target device, and different groups of output ends are electrically connected to different test motors; n is an integer greater than 0; wherein, the first selection branch is used to control the n groups of output ends of the second selection branch to output the first adjustment signal or the second adjustment signal when the first switch module is turned on; the first adjustment signal is used to trigger the test motor of the target device to adjust its position along the first target direction; the second adjustment signal is used to trigger the test motor of the target device to adjust its position along the second target direction; the first target direction is the opposite of the second target direction; the first target directions corresponding to different test motors are different, and the second target directions corresponding to different test motors are different; the second selection branch is used to output the first adjustment signal or the second adjustment signal through the n groups of output ends under the control of the first selection branch. Thus, in the embodiment of the present application, when the first switch module is turned on, the first selection branch controls the n-group output terminal of the second selection branch to output the first adjustment signal or the second adjustment signal, triggering the test motor of the target device to adjust its position along the first target direction or the second target direction. The detection circuit can automatically adjust the position of the test motor of the target device, so that the motor of the target device can be automatically tested by adjusting the motor position of the target device, which reduces manual participation, improves detection efficiency, saves test costs, and has continuity and stability.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

FIG1 is a schematic diagram of the structure of a detection circuit provided in an embodiment of the present application;

FIG2 is a schematic diagram of the structure of another detection circuit provided in an embodiment of the present application;

FIG3 is a schematic diagram of the structure of another detection circuit provided in an embodiment of the present application;

FIG4 is a schematic diagram of the structure of another detection circuit provided in an embodiment of the present application;

FIG5 is a schematic diagram of the structure of another detection circuit provided in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of another detection circuit provided in an embodiment of the present application;

FIG7 is a schematic diagram of the structure of another detection circuit provided in an embodiment of the present application;

FIG. 8 is a schematic diagram of the structure of another detection circuit provided in an embodiment of the present application.

Detailed ways

In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

It should be understood that the term "and/or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.

Automobiles are gradually becoming automated and intelligent. Electric seats have the function of adjusting the seat position. Users can adjust the seat position to make it easier for them to drive or rest in the seat. The function of adjusting the seat position of electric seats can improve the comfort of the seats and provide users with a better car experience. In some technologies, the electric seat includes an external adjustment box, an MCU (Microcontroller Unit), and a motor. The basic working principle is that the external adjustment box inputs a control signal to the MCU, and then the MCU controls the motor to adjust the position of the electric seat.

It is necessary to test and evaluate the performance of all aspects of the electric seat. Among them, reliability is an important quality indicator of the electric seat. The reliability of the electric seat position adjustment refers to the repeatability of the electric seat to adjust the position without failure.

Currently, the reliability test of electric seat position adjustment needs to be done manually, such as manually operating an external adjustment box to repeatedly adjust the electric seat position. The manual testing method is costly and time-consuming, and lacks continuity and stability.

In view of the above problems, an embodiment of the present application provides a detection circuit and a device, wherein the detection circuit includes: a first switch module, a first selection branch, and a second selection branch. One end of the first switch module is used to connect to the first end of the power supply; the input end of the first selection branch is connected to the other end of the first switch module, and the power supply end of the first selection branch is used to connect to the second end of the power supply; the second selection branch includes n groups of output ends, the control end of the second selection branch is connected to the output end of the first selection branch, and the power supply end of the second selection branch is used to connect to the second end of the power supply, and each group of output ends of the second selection branch is respectively used to electrically connect to the input end of each test motor in the target device, and different groups of output ends are electrically connected to different test motors; n is an integer greater than 0; wherein, the first selection branch is used to control the n groups of output ends of the second selection branch to output the first adjustment signal or the second adjustment signal when the first switch module is turned on; the first adjustment signal is used to trigger the test motor of the target device to adjust its position along the first target direction; the second adjustment signal is used to trigger the test motor of the target device to adjust its position along the second target direction; the first target direction is the opposite of the second target direction; the first target directions corresponding to different test motors are different, and the second target directions corresponding to different test motors are different; the second selection branch is used to output the first adjustment signal or the second adjustment signal through the n groups of output ends under the control of the first selection branch. Thus, in the embodiment of the present application, when the first switch module is turned on, the first selection branch controls the n-group output terminal of the second selection branch to output the first adjustment signal or the second adjustment signal, triggering the test motor of the target device to adjust its position along the first target direction or the second target direction. The detection circuit can automatically adjust the position of the test motor of the target device, so that the motor of the target device can be automatically tested by adjusting the motor position of the target device, which reduces manual participation, improves detection efficiency, saves test costs, and has continuity and stability. The following is a detailed description.

Referring to Fig. 1, it is a schematic diagram of a structure of a detection circuit provided in an embodiment of the present application. As shown in Fig. 1, the detection circuit comprises: a first switch module 10, one end of the first switch module 10 is used to connect to a first end of a power supply.

The first selection branch 20 has an input end connected to the other end of the first switch module 10 , and a power supply end of the first selection branch 20 is used to connect to the second end of the power supply.

The second selection branch 30 includes n groups of output terminals, the control terminal of the second selection branch 30 is connected to the output terminal of the first selection branch 20, the power terminal of the second selection branch 30 is used to connect to the second end of the power supply, each group of output terminals of the second selection branch 30 is respectively used to electrically connect to the input terminal of the corresponding test motor in the target device, and different groups of output terminals are electrically connected to different test motors; n is an integer greater than 0.

Among them, the first selection branch 20 is used to control the n groups of output ends of the second selection branch 30 to output the first adjustment signal or the second adjustment signal when the first switch module 10 is turned on; the first adjustment signal is used to trigger the test motor of the target device to adjust the position along the first target direction; the second adjustment signal is used to trigger the test motor of the target device to adjust the position along the second target direction; the first target direction is the opposite of the second target direction; different test motors correspond to different first target directions, and different test motors correspond to different second target directions.

The second selection branch 30 is used to output the first adjustment signal or the second adjustment signal through n groups of output terminals under the control of the first selection branch 20 .

In an embodiment of the present application, the first switch module 10 is used to control whether the detection circuit is powered. When the first switch module 10 is disconnected from the first end of the power supply, the power supply does not supply power to the detection circuit; when the connection between the first switch module 10 and the first end of the power supply is turned on, the power supply supplies power to the detection circuit. The first end of the power supply can be the positive pole of the power supply or the negative pole of the power supply, which is not limited in the present application. In some embodiments, the first switch module 10 can be a switch.

The input end of the first selection branch 20 is connected to the other end of the first switch module 10, and the power supply end of the first selection branch 20 is used to connect the second end of the power supply. In this way, when the first switch module 10 is turned on, the power supply supplies power to the first selection branch 20, and the first selection branch 20 is in a working state. The control end of the second selection branch 30 is connected to the output end of the first selection branch 20. In this way, when the first switch module 10 is turned on, the first selection branch 20 can control the n groups of output ends of the second selection branch 30 to output the first adjustment signal or the second adjustment signal. In some embodiments, the control end of the first selection branch 20 can output different signals to control the n groups of output ends of the second selection branch 30 to output the first adjustment signal or the second adjustment signal. Or, in some embodiments, the control end of the first selection branch 20 can output different signals at different times to control the n groups of output ends of the second selection branch 30 to output the first adjustment signal or the second adjustment signal at different times.

The second selection branch 30 includes n groups of output terminals. When the second selection branch 30 outputs a first adjustment signal under the control of the first selection branch 20, the corresponding test motor in the target device receives the first adjustment signal and adjusts its position along the first target direction; when the second selection branch 30 outputs a second adjustment signal under the control of the first selection branch 20, the corresponding test motor in the target device receives the second adjustment signal and adjusts its position along the second target direction.

It should be noted that the test motor can have at least one set of test directions, and each set of test directions corresponds to a set of input ends, that is, the test motor includes at least one set of input ends. When the test motor includes at least two sets of test directions, at least two sets of test directions are different. For each of the at least one set of test directions of the test motor, the set of test directions includes a first target direction and a second target direction, and the first target direction and the second target direction are opposite to each other. The first target directions contained in different sets of test directions are different, and the second target directions are also different. For example, the test motor includes two sets of test directions, one set of test directions is height adjustment, and the other set of test directions is front and rear position adjustment. For this set of test directions for height adjustment, the first target direction may be the direction of moving from a high place to a low place, and the second target direction may be the direction of moving from a low place to a high place. For this set of test directions for front and rear position adjustment, the first target direction may be the direction of moving from the front to the back, and the second target direction may be the direction of moving from the back to the front.

Different groups of input terminals of the test motor correspond one to one with output terminals of the second selection branch, and different groups of input terminals of the test motor correspond to different output terminals of the second selection branch.

In some embodiments, the target device may include at least one test motor. For example, the target device may be an electric seat. The test motor of the target device may include a bidirectional motor for adjusting the seat back angle, a bidirectional motor for adjusting the seat height, a bidirectional motor for adjusting the front and rear position of the seat, and a bidirectional motor for adjusting the headrest angle, and the present application does not limit this. For the target device, the test motor includes a motor for adjusting the seat height, and the test direction corresponding to the motor is to adjust the seat height. The first target direction included therein may be the direction from high to low of the seat, and correspondingly, the second target direction is from low to high. For the target device, the test motor includes a motor for adjusting the seat back angle, and the test direction corresponding to the motor is to adjust the seat back angle. The first target direction included therein may be the direction in which the seat back tilts forward, and correspondingly, the second target direction is the direction in which the seat back tilts backward.

When the first switch module 10 is turned on, the power supply supplies power to the detection circuit, the first selection branch 20 controls the n-group output terminal of the second selection branch 30 to output the first adjustment signal or the second adjustment signal, and the corresponding test motor in the target device receives the first adjustment signal or the second adjustment signal, and adjusts the position along the first target direction or the second target direction. The detection circuit can automatically adjust the position of the test motor of the target device, so that the automatic test of the motor of the target device can be achieved by adjusting the motor position of the target device, which reduces manual participation, improves detection efficiency, saves test costs, and has continuity and stability.

As a possible implementation method, each of the above-mentioned n groups of output ends includes a first output end and a second output end; for each group of output ends of the second selection branch 30, the first output end of the group of output ends is used to electrically connect to the first input end of the target test motor, and the second output end of the group of output ends is used to electrically connect to the second input end of the target test motor.

The target test motor is a test motor in the target device that is electrically connected to the group of output terminals.

In the embodiment of the present application, for each group of output ends of the second selection branch 30, the first output end of the group of output ends is used to electrically connect to the first input end of the target test motor, and can output a first adjustment signal to trigger the target test motor to adjust its position along the first target direction; the second output end of the group of output ends is used to electrically connect to the second input end of the target test motor, and can output a second adjustment signal to trigger the target test motor to adjust its position along the second target direction. The target test motor is a test motor in the target device that is electrically connected to the group of output ends.

The output ends of the second selection branch corresponding to different groups of input ends in the test motor of the target device are different, that is, the first input end and the second input end of different groups in the test motor of the target device correspond to the first output end and the second input end of different groups in the second selection branch 30. For example, the test motor of the target device includes two groups of test directions, that is, 2 groups of input ends, then the test motor of the target device can be detected by the detection circuit of n=2 in the present application. The first input end of the first group of input ends of the test motor is electrically connected to the first output end of the first group of output ends in the second selection branch 30, and the second input end of the first group of input ends of the test motor is electrically connected to the second output end of the first group of output ends in the second selection branch 30. The first input end of the second group of input ends of the test motor is electrically connected to the first output end of the second group of output ends in the second selection branch 30, and the second input end of the second group of input ends of the test motor is electrically connected to the second output end of the second group of output ends in the second selection branch 30.

As a possible implementation, as shown in FIG. 2 , the second selection branch 30 includes n groups of adjustment modules 301 .

For each group of adjustment modules 301 of the second selection branch 30 , the first output terminal of the adjustment module 301 is used to electrically connect to the first input terminal of the target test motor, and the second output terminal of the adjustment module 301 is used to electrically connect to the second input terminal of the target test motor.

The control terminal in the adjustment module 301 is connected to the corresponding output terminal in the first selection branch 20 .

In the embodiment of the present application, the control end in the adjustment module 301 is connected to the corresponding output end in the first selection branch 20. In this way, when the first switch module 10 is turned on, the first selection branch 20 can control the n groups of adjustment modules 301 in the second selection branch 30 to output the first adjustment signal or the second adjustment signal.

For each group of adjustment modules 301 of the second selection branch 30, the first output end of each group of adjustment modules 301 is the first output end of each group of output ends in the above detection circuit, and the second output end of each group of adjustment modules 301 is the second output end of each group of output ends in the above detection circuit.

The first output end of the adjustment module 301 is used to electrically connect to the first input end of the target test motor, and can output a first adjustment signal to trigger the target test motor to adjust its position along the first target direction; the second output end of the adjustment module 301 is used to electrically connect to the second input end of the target test motor, and can output a second adjustment signal to trigger the target test motor to adjust its position along the second target direction.

Different groups of input terminals of the test motor of the target device correspond to different groups of adjustment modules 301 in the second selection branch 30. For example, n=2, which means that the second selection branch 30 includes 2 groups of adjustment modules. The test motor of the target device includes at least 2 groups of input terminals, and the first input terminal of the first group of input terminals of the test motor of the target device can be electrically connected to the first output terminal of the first group of adjustment modules 301 in the second selection branch 30, and the second input terminal of the first group of input terminals of the test motor is electrically connected to the second output terminal of the first group of adjustment modules 301 in the second selection branch 30. The first input terminal of the second group of input terminals of the test motor is electrically connected to the first output terminal of the second group of adjustment modules 301 in the second selection branch 30, and the second input terminal of the second group of input terminals of the test motor is electrically connected to the second output terminal of the second group of adjustment modules 301 in the second selection branch 30.

As a possible implementation, as shown in FIG. 3 , each group of adjustment modules 301 includes a first adjustment module 3011 and a second adjustment module 3012 .

For each group of adjustment modules 301 of the second selection branch 30, the output end of the first adjustment module 3011 in the adjustment module is used to electrically connect to the first input end of the target test motor, and the output end of the second adjustment module 3012 in the adjustment module is used to electrically connect to the second input end of the target test motor.

The control end of the first adjustment module 3011 in the adjustment module is connected to the corresponding first output end in the first selection branch 20 ; the control end of the second adjustment module 3012 in the adjustment module is connected to the corresponding second output end in the first selection branch 20 .

In the embodiment of the present application, the output end of the first adjustment module 3011 in each group of adjustment modules 301 is the first output end of each group of adjustment modules 301 in the above detection circuit, and the output end of the second adjustment module 3012 is the second output end of each group of adjustment modules 301 in the above detection circuit. For each group of adjustment modules 301 in the second selection branch 30, the output end of the first adjustment module 3011 in the adjustment module is used to electrically connect to the first input end of the target test motor, and the output end of the second adjustment module 3012 in the adjustment module is used to electrically connect to the second input end of the target test motor.

When the first switch module 10 is turned on, the first selection branch 20 controls the first adjustment module 3011 in the adjustment module 301 of the second selection branch 30 to input a first adjustment signal to the first input end of the target test motor; the first selection branch 20 controls the second adjustment module 3012 in the adjustment module 301 of the second selection branch 30 to input a second adjustment signal to the second input end of the target test motor.

Different groups of input terminals of the test motor of the target device correspond to the first adjustment module 3011 and the second adjustment module 3012 in different groups of adjustment modules 301 in the second selection branch 30. For example, n=2, that is, the second selection branch 30 includes 2 groups of adjustment modules. The test motor of the target device includes at least 2 groups of input terminals, and the first input terminal of the first group of input terminals of the test motor of the target device can be electrically connected to the output terminal of the first adjustment module 3011 in the first group of adjustment modules 301 in the second selection branch 30, and the second input terminal of the first group of input terminals of the test motor is electrically connected to the output terminal of the second adjustment module 3012 in the first group of adjustment modules 301 in the second selection branch 30. The first input terminal of the second group of input terminals of the test motor is electrically connected to the output terminal of the first adjustment module 3011 in the second group of adjustment modules 301 in the second selection branch 30, and the second input terminal of the second group of input terminals of the test motor is electrically connected to the output terminal of the second adjustment module 3012 in the second group of adjustment modules 301 in the second selection branch 30.

As a possible implementation manner, as shown in FIG. 4 , when the value of n is 1, the first selection branch 20 includes a selection module 201 .

The input end of the selection module 201 is connected to the other end of the first switch module 10, the power supply end of the selection module 201 is used to connect to the second end of the power supply, the first output end of the selection module 201 is connected to the control end of the first adjustment module 301, and the second output end of the selection module 201 is connected to the control end of the second adjustment module 302.

The selection module 201 is used to send a trigger signal to the control end of the first adjustment module 301 at a first time in each preset cycle when the first switch module 10 is turned on; and send a trigger signal to the control end of the second adjustment module 302 at a second time in each preset cycle.

The first adjustment module 3011 is used to output the first adjustment signal at the first adjustment time of each preset first adjustment cycle when a trigger signal is received, and not output the first adjustment signal at the second adjustment time of each preset first adjustment cycle when a trigger signal is received; the second adjustment time of the first adjustment cycle is other time in the first adjustment cycle except the first adjustment time.

The second adjustment module 3012 is used to output the second adjustment signal at the first adjustment time of each preset second adjustment period when the trigger signal is received, and not output the second adjustment signal at the second adjustment time of each preset second adjustment period when the trigger signal is received; the second adjustment time of the second adjustment period is the other time in the second adjustment period except the first adjustment time.

In the embodiment of the present application, n is 1, that is, the second selection branch 30 of the detection circuit includes a group of adjustment modules 301, and the adjustment module 301 includes a first adjustment module 3011 and a second adjustment module 3012. At this time, the first selection branch 20 may include a selection module 201. The input end of the selection module 201 is connected to the other end of the first switch module 10, and the power supply end of the selection module 201 is used to connect the second end of the power supply. In this way, when the first switch module 10 is turned on, the power supply supplies power to the selection module 301, and the selection module 201 is in a working state. When the selection module 201 is in a working state, it periodically outputs a touch signal, sends a touch signal to the control end of the first adjustment module 3011 at the first time of each preset cycle, and sends a touch signal to the control end of the second adjustment module 3012 at the second time of each preset cycle.

When the first adjustment module 3011 receives the trigger signal, the power supply supplies power to the first adjustment module 3011, and the first adjustment module 3011 is in working state. When the first adjustment module 3011 is in working state, it periodically outputs the first adjustment signal, outputs the first adjustment signal at the first adjustment time of each preset first adjustment cycle, and does not output the first adjustment signal at the second adjustment time of each preset first adjustment cycle. The target test motor receives the first adjustment signal at the first adjustment time of each preset first adjustment cycle, and performs position adjustment along the first target direction. In the first adjustment cycle, the first adjustment signal is not received at other times, i.e., the second adjustment time, except for the first adjustment time, and the position adjustment is not performed in the first target direction.

When the second adjustment module 3012 receives the trigger signal, the power supply supplies power to the second adjustment module 3012, and the second adjustment module 3012 is in working state. When the second adjustment module 3012 is in working state, the second adjustment signal is output at the first adjustment time of each preset second adjustment cycle, and the second adjustment signal is not output at the second adjustment time of each preset second adjustment cycle. In this way, the target test motor receives the second adjustment signal at the first adjustment time of each preset second adjustment cycle, and performs position adjustment along the second target direction. The second adjustment signal is not received at other times in the second adjustment cycle except the first adjustment time, i.e., the second adjustment time, and the position adjustment is not performed in the second target direction.

It should be noted that, in the first adjustment cycle, the first adjustment time may be located after the second adjustment time or before the second adjustment time. When the first adjustment time is located after the second adjustment time, when the first adjustment module 3011 is in the working state, the first adjustment module 3011 shall not output the first adjustment signal within the second adjustment time, and shall start to output the first adjustment signal when the second adjustment time ends and reaches the first adjustment time. When the first adjustment time is located before the second adjustment time, when the first adjustment module 3011 is in the working state, the first adjustment module 3011 shall output the first adjustment signal within the first adjustment time, and shall stop outputting the first adjustment signal when the first adjustment time ends and reaches the second adjustment time. Similarly, for the second adjustment cycle, the first adjustment time may be located after the second adjustment time or before the second adjustment time. For details, please refer to the first adjustment cycle, which will not be repeated here.

It should be noted that the first time of the above-mentioned preset period is greater than or equal to the first adjustment period, and the second time of the preset period is greater than or equal to the second adjustment period. For example, assuming that the first time of the preset period is T1, and the second time of the preset period is T2. The first adjustment period is t3, and the second adjustment period is t4. T1 is greater than or equal to t3, and T2 is greater than or equal to t4. In some embodiments, in order to improve test efficiency, the first time of the preset period is equal to the preset first adjustment period, and the second time of the preset period is equal to the preset second adjustment period.

In some embodiments, in order to ensure the completeness of the test, the first adjustment time of the preset first adjustment cycle can be set to be greater than or equal to the time required for the target test motor to adjust its position from one end to the other end along the first target direction. The first adjustment time of the preset second adjustment cycle can be set to be greater than or equal to the time required for the target test motor to adjust its position from one end to the other end along the second target direction. For example, the target device is an electric seat, the target test motor is a motor for adjusting the height of the seat, the first target direction is the direction from high to low of the seat, and the time required for the target test motor to adjust the position so that the seat moves from the highest point to the lowest point is t5, and the first adjustment time of the first adjustment cycle can be set to be greater than or equal to t5. The second target direction is the direction from low to high of the seat, and the time required for the target test motor to adjust the position so that the seat moves from the lowest point to the highest point is t6, and the first adjustment time of the second adjustment cycle can be set to be greater than or equal to t6.

As a possible implementation, when the value of n is greater than 1, as shown in FIG5 , the first selection branch 20 includes x levels of selection groups, and the power supply end of the selection module included in each level of selection group is used to connect to the second end of the power supply; wherein the value of x is The i-th level selection group includes/> A selection module, i is an integer greater than 0 and not greater than x.

The first output end of the selection module in the first stage selection group is connected to the control end of the corresponding first adjustment module, and the second output end of the selection module in the first stage selection group is connected to the control end of the corresponding second adjustment module.

The input end of the selection module of the x-th stage selection group is connected to the other end of the first switch module 10 .

The first output end of the selection module in the m-th level selection group is connected to the input end of the corresponding selection module in the m-1-th level selection group; the second output end of the selection module in the m-th level selection group is connected to the input end of the corresponding selection module in the m-1-th level selection group; m is an integer greater than 1 and not greater than x.

For each selection module, the input terminal of the selection module is electrically connected to only one of the first output terminal and the second output terminal at the same time.

In the embodiment of the present application, the value of n is greater than 1, that is, the second selection branch 30 includes at least two groups of adjustment modules 301, and the adjustment module 301 includes a first adjustment module 3011 and a second adjustment module 3012. At this time, the first selection branch includes x-level selection groups, where the value of x is For example, when n=2, x=2; when n=3, x=3; when n=4, x=3. The i-th level selection group includes/> A selection module 201 is provided.

Level x selection group includes Selection module 201, that is, the x-th level selection group includes/> The x-th selection group includes one selection module 201 , that is, the x-th selection group includes one selection module 201 . The input end of the selection module 201 of the x-th selection group is connected to the other end of the first switch module 10 .

For one of the second-level selection group to the x-th-level selection group, that is, the m-th-level selection group includes Selection modules 201, wherein m is an integer greater than 1 and not greater than x. The m-1th level selection group includes /> The selection modules 201 are respectively configured as the first selection module 201a and the second selection module 201b, and the first selection module 201a and the second selection module 201b are alternately configured in the m-1th selection group, as shown in FIG5. The first output terminal of the selection module 201 in the mth selection group is connected to the input terminal of the corresponding selection module 201 in the m-1th selection group, that is, the mth selection group is configured as the first output terminal of the selection module 201 in the m-1th selection group. The first output end of each selection module 201 is connected to the input end of the first selection module 201a in the m-1th selection group, and the first output ends of different selection modules 201 in the m-1th selection group are connected to different input ends of the first selection module 201a in the m-1th selection group. The second output end of the selection module 201 in the m-1th selection group is connected to the input end of the corresponding selection module 201 in the m-1th selection group, that is, the first output end of the selection module 201 in the m-1th selection group is connected to the input end of the corresponding selection module 201 in the m-1th selection group. The second output ends of the selection modules 201 are respectively connected to the input ends of the second selection modules 201b in the m-1th level selection group, and the second output ends of different selection modules 201 in the m-1th level selection group are connected to different input ends of the second selection module 201b in the m-1th level selection group.

Level 1 selection group includes The first-level selection group includes n selection modules 201. Different selection modules 201 in the n selection modules 201 in the first-level selection group are respectively connected to different groups of adjustment modules 301 in the second selection branch 30. The first output ends of the n selection modules 201 in the first-level selection group are respectively connected to the control end of the first adjustment module 3011 in the n groups of adjustment modules 301, and the first output ends of different selection modules 201 are connected to different control ends of the first adjustment module 3011; the second output ends of the n selection modules 201 in the first-level selection group are respectively connected to the control end of the second adjustment module 3012 in the n groups of adjustment modules 301, and the second output ends of different selection modules 201 are connected to different control ends of the second adjustment module 3012.

For each selection module 201, the input end of the selection module 201 is electrically connected to only one of the first output end and the second output end at the same time. In this way, at the same time, only one of the first output end and the second output end of each selection module 201 can output a signal. At the same time, for one selection module 201 in the x-th level selection group, the selection module only outputs a trigger signal to one of the first output end and the second output end. For the x-1th level selection group, only one of the first selection module 201a and the second selection module 201b receives a touch signal and is in a working state. For the selection module 201 in the x-1th level selection group that is in a working state, the selection module 201 only outputs a trigger signal to one of the first output end and the second output end. For the x-2th level selection group, only one of the first selection module 201a and the second selection module 201b connected to the selection module 201 in the x-1th level selection group that is in a working state receives a touch signal and is in a working state. By analogy, only one selection module 201 in the 1st level selection group receives a trigger signal and is in a working state. For the second selection branch 30, only a group of adjustment modules 301 connected to the selection modules 201 in the first-level selection group in working state receives the touch signal and is in working state. At the same time, only the test motor connected to the adjustment module 301 in working state in the target device is in working state, and other test motors do not perform position adjustment. In this way, the situation where the test motor temperature is too high due to long-term continuous operation of the test motor is avoided.

For example, as shown in FIG6 , assuming n=4, then That is, the first selection branch includes three levels of selection groups.

The second selection branch 30 includes four groups of adjustment modules 301 , as shown in FIG6 , which are respectively the first group of adjustment modules 301 , the second group of adjustment modules 301 , the third group of adjustment modules 301 , and the fourth group of adjustment modules 301 from left to right; each group of adjustment modules includes a first adjustment module 3011 and a second adjustment module 3012 .

The first-level selection group includes four selection modules 201, and the four selection modules of the first-level selection group are alternately set as first selection modules 201a and second selection modules 201b. The first output end of the first first selection module 201a is connected to the control end of the first adjustment module 3011 in the first group of adjustment modules 301, and the second output end is connected to the control end of the second adjustment module 3012 in the first group of adjustment modules 301. The first output end of the first second selection module 202 is connected to the control end of the first adjustment module 3011 in the second group of adjustment modules 301, and the second output end is connected to the control end of the second adjustment module 3012 in the second group of adjustment modules 301. The first output end of the second first selection module 201a is connected to the control end of the first adjustment module 3011 in the third group of adjustment modules 301, and the second output end is connected to the control end of the second adjustment module 3012 in the third group of adjustment modules 301. The first output end of the second second selection module 201 b is connected to the control end of the first adjustment module 3011 in the fourth group of adjustment modules 301 , and the second output end is connected to the control end of the second adjustment module 3012 in the fourth group of adjustment modules 301 .

It should be noted that, in this example, the order of the first selection modules 201a in the first-level selection group refers to the order of the first selection modules 201a in the first-level selection group from left to right in FIG. 6 , that is, the first first selection module 201a refers to the first first selection module 201a from left to right, and the second first selection module 201a refers to the second first selection module 201a from left to right. Similarly, in this example, the order of the second selection modules 201b in the first-level selection group refers to the order of the second selection modules 201b in the first-level selection group from left to right in FIG. 6 , that is, the first second selection module 201b refers to the first second selection module 201b from left to right, and the second second selection module 201b refers to the second second selection module 201b from left to right.

The second-level selection group includes two selection modules 201, which are alternately arranged as a first selection module 201a and a second selection module 201b. The first output end of the first selection module 201a in the second-level selection group is connected to the input end of the first first selection module 201a in the first-level selection group, and the second output end is connected to the input end of the first second selection module 201b in the first-level selection group. The first output end of the second selection module 201b in the second-level selection group is connected to the input end of the second first selection module 201a in the first-level selection group, and the second output end is connected to the input end of the second second selection module 201b in the first-level selection group.

The third-level selection group includes a selection module 201, a first output end of the selection module 201 of the third-level selection group is connected to an input end of the first selection module 201a in the second-level selection group, and a second output end of the selection module 201 of the third-level selection group is connected to an input end of the second selection module 201b in the second-level selection group.

An input end of the selection module 201 of the third-stage selection group is connected to the other end of the first switch module 10 .

As a possible implementation method, the selection module 201 of the x-th level selection group is used to output a trigger signal through the first output terminal at the first time of each preset cycle corresponding to the x-th level selection group when the first switch module is turned on, and to output a trigger signal through the second output terminal at the second time of each preset cycle of the x-th level selection group.

The selection module 201 of the s-th level selection group is used to output the trigger signal through the first output terminal at the first time of each preset target period of receiving the trigger signal when receiving the trigger signal output by the s+1-th level selection group, and output the trigger signal through the second output terminal at the second time of each preset target period of receiving the trigger signal; wherein s is an integer greater than 1 and less than x; the preset target period is the preset period corresponding to the selection module of the s-th level selection group; the preset target period is less than the preset period corresponding to the selection module of the x-th level selection group.

The first adjustment module 3011 is used to output the first adjustment signal at the first adjustment time of each preset first adjustment cycle when a trigger signal is received, and not output the first adjustment signal at the second adjustment time of each preset first adjustment cycle when a trigger signal is received; the second adjustment time of the first adjustment cycle is other time in the first adjustment cycle except the first adjustment time.

The second adjustment module 3012 is used to output the second adjustment signal at the first adjustment time of each preset second adjustment period when the trigger signal is received, and not output the second adjustment signal at the second adjustment time of each preset second adjustment period when the trigger signal is received; the second adjustment time of the second adjustment period is the other time in the second adjustment period except the first adjustment time.

In the embodiment of the present application, when the first switch module 10 is turned on, the power supply supplies power to the selection module 201 of the x-th selection group, and the selection module 201 of the x-th selection group is in a working state. When the selection module 201 of the x-th selection group is in a working state, a trigger signal is output through the first output end at the first time of each preset cycle corresponding to the selection module 201 of the x-th selection group, and at this time, the input end of the corresponding first selection module 201a in the x-1-th selection group receives the trigger signal. When the selection module 201 of the x-th selection group is in a working state, a trigger signal is output through the second output end at the second time of each preset cycle corresponding to the selection module 201 of the x-th selection group, and at this time, the input end of the corresponding second selection module 201b in the x-1-th selection group receives the trigger signal.

When the selection module 201 corresponding to the s-th selection group receives the trigger signal output by the s+1-th selection group, the selection module 201 corresponding to the s-th selection group is in working state. The selection module 201 of the s-th selection group outputs the trigger signal through the first output terminal at the first time of each preset target period of receiving the trigger signal, and at this time, the input terminal of the corresponding first selection module 201a in the s-1-th selection group receives the trigger signal. The selection module 201 of the s-th selection group outputs the trigger signal through the second output terminal at the second time of each preset target period of receiving the trigger signal, and at this time, the input terminal of the corresponding second selection module 201b in the s-1-th selection group receives the trigger signal. Wherein, s is an integer greater than 1 and less than x; the preset target period is the preset period corresponding to the s-th selection group; the preset target period is less than the preset period corresponding to the x-th selection group.

When receiving the trigger signal output by the second-level selection group, the corresponding selection module 201 in the first-level selection group is in working state. The selection module 201 of the first-level selection group outputs the trigger signal through the first output terminal at the first time of each preset target period when the trigger signal is received, and at this time, the control terminal of the corresponding first adjustment module 3011 in the second selection branch 30 receives the trigger signal. The first adjustment module 3011 outputs the first adjustment signal at the first adjustment time of each preset first adjustment period when the trigger signal is received, and does not output the first adjustment signal at the second adjustment time of each preset first adjustment period when the trigger signal is received; the second adjustment time of the first adjustment period is the other time in the first adjustment period except the first adjustment time.

The selection module 201 of the first-level selection group outputs a trigger signal through the second output terminal at the second time of each preset target cycle when the trigger signal is received, and at this time, the control terminal of the corresponding second adjustment module 3012 in the second selection branch 30 receives the trigger signal. The second adjustment module outputs the second adjustment signal at the first adjustment time of each preset second adjustment cycle when the trigger signal is received, and does not output the second adjustment signal at the second adjustment time of each preset second adjustment cycle when the trigger signal is received; the second adjustment time of the second adjustment cycle is the other time in the second adjustment cycle except the first adjustment time.

In some embodiments, in order to improve testing efficiency, the first time of the preset target cycle of the selection module 201 of the s+1th level selection group is equal to the preset target cycle of the first selection module 201a of the corresponding sth level selection group, and the second time of the preset target cycle of the selection module 201 of the s+1th level selection group is equal to the preset target cycle of the second selection module 201b of the corresponding sth level selection group.

In this way, the test circuit can test the n groups of test directions of the test motor of the target device in sequence and cycle according to the preset target period.

As a possible implementation manner, the selection module 201 includes a time relay.

In the embodiment of the present application, the time relay is an automatic switch device that uses electromagnetic principle or mechanical principle to realize delay control. When the input signal is added, the output circuit of the time relay will produce contact action after a specified time. For the selection module 201, when the time relay receives a signal at the input end, the input end is electrically connected to the first output end at the first time of the target preset cycle, and the input end is electrically connected to the second output end at the second time of the target preset cycle.

As a possible implementation manner, the first adjustment module 3011 and the second adjustment module 3012 include a time relay.

In the embodiment of the present application, for the first adjustment module 3011, at the first adjustment time of each preset first adjustment cycle when the time relay receives the trigger signal, the electrical connection between the output end of the time relay and the first input end of the target test motor is turned on, that is, the first adjustment signal is output; at the second adjustment time of each preset first adjustment cycle when the trigger signal is received, the electrical connection between the output end of the time relay and the first input end of the target test motor is disconnected, that is, the first adjustment signal is not output. For the second adjustment module 3012, at the first adjustment time of each preset second adjustment cycle when the time relay receives the trigger signal, the electrical connection between the output end of the time relay and the second input end of the target test motor is turned on, that is, the second adjustment signal is output; at the second adjustment time of each preset first adjustment cycle when the trigger signal is received, the electrical connection between the output end of the time relay and the second input end of the target test motor is disconnected, that is, the second adjustment signal is not output.

As a possible implementation manner, the detection circuit further includes: at least one second switch 501 .

At least one second switch is disposed between an input terminal of at least one selection module 201 in the first-stage selection group and a first output terminal or a second output terminal of a corresponding selection module 201 in the second-stage selection group.

In the embodiment of the present application, in order to improve the flexibility of the test, whether the selection module 201 of the first-level selection group can receive the trigger signal output by the second-level selection group can be controlled by turning on and off the second switch 501. When the second switch 501 is turned on, the corresponding selection module 201 in the first-level selection group can receive the trigger signal output by the second-level selection group. When the second switch 501 is turned off, the corresponding selection module 201 in the first-level selection group cannot receive the trigger signal output by the second-level selection group. Exemplarily, as shown in FIG7 , assuming that n=4, a second switch 501 is respectively provided between the first input end of the first selection module 201a of the second-level selection group and the input end of the first first selection module 201a of the first selection group, between the second input end of the first selection module 201a of the second-level selection group and the input end of the first second selection module 201b of the first selection group, between the first input end of the second selection module 201b of the second-level selection group and the input end of the second first selection module 201a of the first selection group, and between the second input end of the second selection module 201b of the second-level selection group and the input end of the second second selection module 201b of the first selection group. If the second switch 501 provided between the first input end of the first selection module 201a of the second-level selection group and the input end of the first first selection module 201a of the first selection group is disconnected, the first first selection module 201a of the first-level selection group cannot receive the trigger signal output by the first selection module 201a of the second-level selection group.

For example, as shown in FIG8 , assuming that the target device is an electric seat, the target device includes 4 test motors, and each test motor includes a set of test directions. Among them, the first test motor M1 is a motor for adjusting the seat height, the first target direction is the direction of the seat from high to low, and the second target direction is the direction of the seat from low to high; the second test motor M2 is a motor for adjusting the front and rear position of the seat, the first target direction is the direction of the seat from front to back, and the second target direction is the direction of the seat from back to front; the third test motor M3 is a motor for adjusting the seat back angle, the first target direction is the direction of the seat back tilting forward, and the second target direction is the direction of the seat back reclining backward; the fourth test motor is a motor for adjusting the seat headrest angle, the first target direction is the direction of the seat headrest tilting forward, and the second target direction is the direction of the seat headrest reclining backward. The target device includes an MCU, and the MCU controls the position adjustment of the test motor. The first input end of the test motor is the first input end corresponding to the MCU, and the second input end of the test motor is the second input end corresponding to the MCU.

The test motor of the target device includes 4 sets of input terminals, and the test motor of the target device can be tested by using the detection circuit of n=4 in the present application. The first end of the power supply is the positive pole of the power supply, and the second end of the power supply is the negative pole of the power supply. The first switch module 10 is a switch S1. One end of the switch S1 is connected to the positive pole of the power supply.

Each selection module 201 of the first selection branch 20 is a time relay. The selection module 201 of the third level selection branch is a time relay KT7, the input end of the time relay KT7 is connected to the other end of the switch S1, and the power supply end is connected to the negative pole of the power supply.

The first selection module 201a of the second level selection group is a time relay KT5, the second selection module 201b of the second level selection branch is a time relay KT6, the input end of the time relay KT5 is connected to the first output end of the time relay KT7 of the third level selection group, and the input end of the time relay KT6 is connected to the second output end of the time relay KT7 of the third level selection group. The power supply ends of the time relays KT5 and KT6 are both connected to the negative pole of the power supply.

The first first selection module 201a of the first level selection group is a time relay KT1, the first second selection module 201b of the first level selection branch is a time relay KT2, the input end of the time relay KT1 is connected to the first output end of the time relay KT5 of the second level selection group, and the input end of the time relay KT2 is connected to the second output end of the time relay KT5 of the second level selection group. The second first selection module 201a of the first level selection branch is a time relay KT3, the first second selection module 201b of the first level selection branch is a time relay KT4, the input end of the time relay KT3 is connected to the first output end of the time relay KT6 of the second level selection group, and the input end of the time relay KT4 is connected to the second output end of the time relay KT6 of the second level selection group. The power supply ends of the time relays KT1, KT2, KT3, and KT4 are all connected to the negative pole of the power supply.

Each first adjustment module 3011 of the second selection branch 30 is a time relay, and each second adjustment module 3012 is a time relay. The first adjustment module 3011 of the first group of adjustment modules 301 of the second selection branch 30 is a time relay KT1-1, the second adjustment module 3012 of the first group of adjustment modules 301 is a time relay KT1-2, the first adjustment module 3011 of the second group of adjustment modules 301 is a time relay KT2-1, the second adjustment module 3012 of the second group of adjustment modules 301 is a time relay KT2-2, the first adjustment module 3011 of the third group of adjustment modules 301 is a time relay KT3-1, the second adjustment module 3012 of the third group of adjustment modules 301 is a time relay KT3-2, the first adjustment module 3011 of the fourth group of adjustment modules 301 is a time relay KT4-1, and the second adjustment module 3012 of the fourth group of adjustment modules 301 is a time relay KT4-2. The control end of the time relay KT1-1 is connected to the first output end of the time relay KT1 of the first level selection group, and the control end of the time relay KT1-2 is connected to the second output end of the time relay KT1 of the first level selection group. The output end of the time relay KT1-1 is connected to the first input end of the test motor M1, and the output end of the time relay KT1-2 is connected to the second input end of the test motor M1. The control end of the time relay KT2-1 is connected to the first output end of the time relay KT2 of the first level selection group, and the control end of the time relay KT2-2 is connected to the second output end of the time relay KT2 of the first level selection group. The output end of the time relay KT2-1 is connected to the first input end of the test motor M2, and the output end of the time relay KT2-2 is connected to the second input end of the test motor M2. The control end of the time relay KT3-1 is connected to the first output end of the time relay KT3 of the first level selection group, and the control end of the time relay KT3-2 is connected to the second output end of the time relay KT3 of the first level selection group. The output end of the time relay KT3-1 is connected to the first input end of the test motor M3, and the output end of the time relay KT3-2 is connected to the second input end of the test motor M3. The control end of the time relay KT4-1 is connected to the first output end of the time relay KT4 of the first level selection group, and the control end of the time relay KT4-2 is connected to the second output end of the time relay KT4 of the first level selection group. The output end of the time relay KT4-1 is connected to the first input end of the test motor M4, and the output end of the time relay KT4-2 is connected to the second input end of the test motor M4. The power supply ends of the time relays KT1-1, KT1-2, KT2-1, KT2-2, KT3-1, KT3-2, KT4-1, and KT4-2 are all connected to the negative pole of the power supply. In this example, when the MCU receives a low level signal, it controls the corresponding test motor to adjust the position, so the output end of each time relay in the second selection branch 30 is connected to the negative pole of the power supply.

When the switch S1 is turned on, the input end of the time relay KT7 in the third-level selection group is electrically connected to the first output end at the first time of each preset target cycle corresponding to the time relay KT7, and the time relay KT5 in the second-level selection group receives the trigger signal. When the time relay KT5 receives the trigger signal, the input end of the time relay KT5 is connected to the first output end at the first time of each preset target cycle corresponding to the time relay KT5, and the time relay KT1 in the first-level selection group receives the trigger signal. When the time relay KT1 receives the trigger signal, the input end of the time relay KT1 is electrically connected to the first output end at the first time of each preset target cycle corresponding to the time relay KT1, and the time relay KT1-1 of the second selection branch 30 receives the trigger signal. When the time relay KT1-1 receives the trigger signal, the output end of the time relay KT1-1 is disconnected from the first input end of the test motor M1 at the second adjustment time of each first adjustment cycle corresponding to the time relay KT1-1, and the test motor M1 does not perform position adjustment. At the first adjustment time of each first adjustment cycle corresponding to the time relay KT1-1, the output end of the time relay KT1-1 is connected to the first input end of the test motor M1, and the test motor M1 adjusts the position of the seat from high to low. When the time relay KT1 receives the trigger signal, at the second time of each preset target cycle corresponding to the time relay KT1, the input end of the time relay KT1 is electrically connected to the second output end, and the time relay KT1-2 of the second selection branch 30 receives the trigger signal. When the time relay KT1-2 receives the trigger signal, at the second adjustment time of each second adjustment cycle corresponding to the time relay KT1-2, the output end of the time relay KT1-2 is disconnected from the second input end of the test motor M1, and the test motor M1 does not adjust the position. At the first adjustment time of each second adjustment cycle corresponding to the time relay KT1-2, the output end of the time relay KT1-2 is connected to the second input end of the test motor M1, and the test motor M1 adjusts the position of the seat from low to high.

When the time relay KT5 receives the trigger signal, at the second time of each preset target cycle corresponding to the time relay KT5, the input end of the time relay KT5 is electrically connected to the second output end, and the time relay KT2 in the first level selection group receives the trigger signal. When the time relay KT2 receives the trigger signal, at the first time of each preset target cycle corresponding to the time relay KT2, the input end of the time relay KT2 is electrically connected to the first output end, and the time relay KT2-1 of the second selection branch 30 receives the trigger signal. When the time relay KT2-1 receives the trigger signal, at the second adjustment time of each first adjustment cycle corresponding to the time relay KT2-1, the output end of the time relay KT2-1 is disconnected from the first input end of the test motor M2, and the test motor M1 does not adjust its position. At the first adjustment time of each first adjustment cycle corresponding to the time relay KT2-1, the output end of the time relay KT2-1 is connected to the first input end of the test motor M2, and the test motor M2 adjusts its position in the direction from the front to the back of the seat. When the time relay KT2 receives the trigger signal, at the second time of each preset target cycle corresponding to the time relay KT2, the input end of the time relay KT2 is electrically connected to the second output end, and the time relay KT2-2 of the second selection branch 30 receives the trigger signal. When the time relay KT2-2 receives the trigger signal, at the second adjustment time of each second adjustment cycle corresponding to the time relay KT2-2, the output end of the time relay KT2-2 is disconnected from the second input end of the test motor M2, and the test motor M2 does not adjust its position. At the first adjustment time of each second adjustment cycle corresponding to the time relay KT2-2, the output end of the time relay KT2-2 is connected to the second input end of the test motor M2, and the test motor M2 adjusts its position in the direction from the back to the front of the seat.

When the switch S1 is turned on, the input end of the time relay KT7 in the third-level selection group is electrically connected to the second output end at the second time of each preset cycle corresponding to the time relay KT7, and the time relay KT6 in the second-level selection group receives the trigger signal. When the time relay KT6 receives the trigger signal, the input end of the time relay KT6 is electrically connected to the first output end at the first time of each preset target cycle corresponding to the time relay KT6, and the time relay KT3 in the first-level selection group receives the trigger signal. When the time relay KT3 receives the trigger signal, the input end of the time relay KT3 is electrically connected to the first output end at the first time of each preset target cycle corresponding to the time relay KT3, and the time relay KT3-1 of the second selection branch 30 receives the trigger signal. When the time relay KT3-1 receives the trigger signal, the output end of the time relay KT3-1 is disconnected from the first input end of the test motor M3 at the second adjustment time of each first adjustment cycle corresponding to the time relay KT3-1, and the test motor M3 does not adjust its position. At the first adjustment time of each first adjustment cycle corresponding to the time relay KT3-1, the output end of the time relay KT3-1 is connected to the first input end of the test motor M3, and the test motor M3 adjusts the position of the seat in the direction of the seat back being tilted forward. When the time relay KT3 receives the trigger signal, at the second time of each preset target cycle corresponding to the time relay KT3, the input end of the time relay KT3 is electrically connected to the second output end, and the time relay KT3-2 of the second selection branch 30 receives the trigger signal. When the time relay KT3-2 receives the trigger signal, at the second adjustment time of each second adjustment cycle corresponding to the time relay KT3-2, the output end of the time relay KT3-2 is disconnected from the second input end of the test motor M3, and the test motor M3 does not adjust the position. At the first adjustment time of each second adjustment cycle corresponding to the time relay KT3-2, the output end of the time relay KT3-2 is connected to the second input end of the test motor M3, and the test motor M3 adjusts the position in the direction of the seat back being tilted back.

When the time relay KT6 receives the trigger signal, at the second time of each preset target cycle corresponding to the time relay KT6, the input end of the time relay KT6 is electrically connected to the second output end, and the time relay KT4 in the first-level selection group receives the trigger signal. When the time relay KT4 receives the trigger signal, at the first time of each preset target cycle corresponding to the time relay KT4, the input end of the time relay KT4 is electrically connected to the first output end, and the time relay KT4-1 of the second selection branch 30 receives the trigger signal. When the time relay KT4-1 receives the trigger signal, at the second adjustment time of each first adjustment cycle corresponding to the time relay KT4-1, the output end of the time relay KT4-1 is disconnected from the first input end of the test motor M4, and the test motor M1 does not adjust its position. At the first adjustment time of each first adjustment cycle corresponding to the time relay KT4-1, the output end of the time relay KT4-1 is connected to the first input end of the test motor M4, and the test motor M4 adjusts its position in the direction of the forward tilt of the seat headrest. When the time relay KT4 receives the trigger signal, at the second time of each preset target cycle corresponding to the time relay KT4, the input end of the time relay KT4 is electrically connected to the second output end, and the time relay KT4-2 of the second selection branch 30 receives the trigger signal. When the time relay KT4-2 receives the trigger signal, at the second adjustment time of each second adjustment cycle corresponding to the time relay KT4-2, the output end of the time relay KT4-2 is disconnected from the second input end of the test motor M4, and the test motor M4 does not adjust its position. At the first adjustment time of each second adjustment cycle corresponding to the time relay KT4-2, the output end of the time relay KT4-2 is connected to the second input end of the test motor M4, and the test motor M4 adjusts its position in the direction of the seat headrest reclining.

Corresponding to the above embodiments, the present application also provides a testing device, including the detection circuit described in the above embodiments.

In this specification, the same or similar parts between the various embodiments can be referred to each other. In particular, for the device embodiment, since it is basically similar to the circuit embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

Claims (12)

1. A detection circuit, characterized in that it comprises: A first switch module, one end of which is used to connect to a first end of a power source; a first selection branch, wherein an input end of the first selection branch is connected to the other end of the first switch module, and a power supply end of the first selection branch is used to connect to a second end of a power supply; The second selection branch includes n groups of output terminals, the control terminal of the second selection branch is connected to the output terminal of the first selection branch, the power terminal of the second selection branch is used to connect the second terminal of the power supply, each group of output terminals of the second selection branch is respectively used to electrically connect to the input terminal of the corresponding test motor in the target device, and different groups of output terminals are electrically connected to different test motors; n is an integer greater than 0; wherein, The first selection branch is used to control the n output ends of the second selection branch to output a first adjustment signal or a second adjustment signal when the first switch module is turned on; the first adjustment signal is used to trigger the test motor of the target device to adjust its position along a first target direction; the second adjustment signal is used to trigger the test motor of the target device to adjust its position along a second target direction; the first target direction is the reverse direction of the second target direction; different test motors correspond to different first target directions, and different test motors correspond to different second target directions; The second selection branch is used to output the first adjustment signal or the second adjustment signal through the n groups of output terminals under the control of the first selection branch; Wherein, the second selection branch includes n groups of adjustment modules; each group of adjustment modules includes a first adjustment module and a second adjustment module; When the value of n is 1, the first selection branch includes a selection module; The input end of the selection module is connected to the other end of the first switch module, the power supply end of the selection module is used to connect the second end of the power supply, the first output end of the selection module is connected to the control end of the first adjustment module, and the second output end of the selection module is connected to the control end of the second adjustment module; The selection module is used to send a trigger signal to the control end of the first adjustment module at a first time of each preset cycle when the first switch module is turned on; and send a trigger signal to the control end of the second adjustment module at a second time of each preset cycle; The first adjustment module is configured to output the first adjustment signal at a first adjustment time of each preset first adjustment period in which a trigger signal is received, and not output the first adjustment signal at a second adjustment time of each preset first adjustment period in which a trigger signal is received; the second adjustment time of the first adjustment period is other time in the first adjustment period except the first adjustment time; The second adjustment module is used to output the second adjustment signal at the first adjustment time of each preset second adjustment period when a trigger signal is received, and not output the second adjustment signal at the second adjustment time of each preset second adjustment period when a trigger signal is received; the second adjustment time of the second adjustment period is the other time in the second adjustment period except the first adjustment time. 2. The circuit according to claim 1, wherein each of the n groups of output terminals comprises a first output terminal and a second output terminal; For each group of output ends of the second selection branch, the first output end of the group of output ends is used to electrically connect to the first input end of the target test motor, and the second output end of the group of output ends is used to electrically connect to the second input end of the target test motor; the target test motor is a test motor in the target device for being electrically connected to the group of output ends. 3. The circuit according to claim 1, characterized in that For each group of adjustment modules of the second selection branch, the first output end of the adjustment module is used to electrically connect to the first input end of the target test motor, and the second output end of the adjustment module is used to electrically connect to the second input end of the target test motor; The control end in the adjustment module is connected to the corresponding output end in the first selection branch. 4. The circuit according to claim 1, characterized in that For each group of adjustment modules of the second selection branch, the output end of the first adjustment module in the adjustment modules is used to electrically connect to the first input end of the target test motor, and the output end of the second adjustment module in the adjustment modules is used to electrically connect to the second input end of the target test motor; The first adjustment module control terminal in the adjustment module is connected to the corresponding first output terminal in the first selection branch; the second adjustment module control terminal in the adjustment module is connected to the corresponding second output terminal in the first selection branch. 5. The circuit according to any one of claims 1 to 4, characterized in that the selection module comprises a time relay. 6 . The circuit according to claim 3 , wherein the first adjustment module and the second adjustment module comprise time relays. 7. A detection circuit, characterized in that it comprises: A first switch module, one end of which is used to connect to a first end of a power source; a first selection branch, wherein an input end of the first selection branch is connected to the other end of the first switch module, and a power supply end of the first selection branch is used to connect to a second end of a power supply; The second selection branch includes n groups of output terminals, the control terminal of the second selection branch is connected to the output terminal of the first selection branch, the power terminal of the second selection branch is used to connect the second terminal of the power supply, each group of output terminals of the second selection branch is respectively used to electrically connect to the input terminal of the corresponding test motor in the target device, and different groups of output terminals are electrically connected to different test motors; n is an integer greater than 0; wherein, The first selection branch is used to control the n output ends of the second selection branch to output a first adjustment signal or a second adjustment signal when the first switch module is turned on; the first adjustment signal is used to trigger the test motor of the target device to adjust its position along a first target direction; the second adjustment signal is used to trigger the test motor of the target device to adjust its position along a second target direction; the first target direction is the reverse direction of the second target direction; different test motors correspond to different first target directions, and different test motors correspond to different second target directions; The second selection branch is used to output the first adjustment signal or the second adjustment signal through the n groups of output terminals under the control of the first selection branch; Wherein, the second selection branch includes n groups of adjustment modules; each group of adjustment modules includes a first adjustment module and a second adjustment module; When the value of n is greater than 1, the first selection branch includes x levels of selection groups, and the power supply end of the selection module included in each level of selection group is used to connect to the second end of the power supply; wherein the value of x is The i-th level selection group includes/> selection modules, i is an integer greater than 0 and not greater than x; The first output end of the selection module in the first level selection group is connected to the control end of the corresponding first adjustment module, and the second output end of the selection module in the first level selection group is connected to the control end of the corresponding second adjustment module; An input end of the selection module of the x-th selection group is connected to the other end of the first switch module; The first output terminal of the selection module in the m-th selection group is connected to the input terminal of the corresponding selection module in the m-1-th selection group; the second output terminal of the selection module in the m-th selection group is connected to the input terminal of the corresponding selection module in the m-1-th selection group; m is an integer greater than 1 and not greater than x; For each selection module, the input terminal of the selection module is electrically connected to only one of the first output terminal and the second output terminal at the same time. 8. The circuit according to claim 7, characterized in that a selection module of the x-th selection group, configured to output a trigger signal through the first output terminal at a first time of each preset period corresponding to the x-th selection group, and output a trigger signal through the second output terminal at a second time of each preset period of the x-th selection group when the first switch module is turned on; The selection module of the s-th selection group is used to, when receiving a trigger signal output by the s+1-th selection group, output the trigger signal through the first output terminal at the first time of each preset target period of the received trigger signal, and output the trigger signal through the second output terminal at the second time of each preset target period of the received trigger signal; wherein s is an integer greater than 1 and less than x; the preset target period is the preset period corresponding to the selection module of the s-th selection group; the preset target period is less than the preset period corresponding to the selection module of the x-th selection group; The first adjustment module is configured to output the first adjustment signal at a first adjustment time of each preset first adjustment period in which a trigger signal is received, and not output the first adjustment signal at a second adjustment time of each preset first adjustment period in which a trigger signal is received; the second adjustment time of the first adjustment period is other time in the first adjustment period except the first adjustment time; The second adjustment module is used to output the second adjustment signal at the first adjustment time of each preset second adjustment period when a trigger signal is received, and not output the second adjustment signal at the second adjustment time of each preset second adjustment period when a trigger signal is received; the second adjustment time of the second adjustment period is the other time in the second adjustment period except the first adjustment time. 9. The circuit according to claim 7 or 8, characterized in that the selection module comprises a time relay. 10 . The circuit according to claim 7 , wherein the first adjustment module and the second adjustment module comprise time relays. 11. The circuit according to claim 7 or 8, further comprising: at least one second switch; The at least one second switch is arranged between an input terminal of at least one selection module in the first-stage selection group and a first output terminal or a second output terminal of a corresponding selection module in the second-stage selection group. 12. A detection device, characterized by comprising the detection circuit according to any one of claims 1 to 6 or the detection circuit according to any one of claims 7 to 11.