CN217385689U - Multi-station test system and test platform - Google Patents

Abstract

The utility model provides a multi-station test system and a test platform, which relate to the technical field of automated testing. The multi-station test system comprises: a control module, an incoming line module, a voltage switching matrix, a frequency conversion module, an output switching matrix and an output module ; The incoming line module, voltage switching matrix, frequency conversion module, output switching matrix and output module are connected in sequence; the incoming line module is used to connect with the power supply system, and the output module is used to connect with at least one pipeline equipment; The control terminal is connected with the control module; the control module is used for switching control of the voltage switching matrix and the output switching matrix, so as to switch the test circuit corresponding to at least one assembly line device. The multi-station test system and test platform provided by the utility model can switch the test line corresponding to the assembly line equipment, and can realize the simultaneous online test of multiple assembly line equipment through a set of multi-station test system, which effectively improves the test efficiency.

Description

Multi-station test system and test platform

technical field

The utility model relates to the technical field of automatic testing, in particular to a multi-station testing system and a testing platform.

Background technique

Motor refers to an electromagnetic device that realizes electric energy conversion or transmission according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machines. Among them, permanent magnet synchronous motors use permanent magnets to provide excitation. , can make the motor structure simpler, reduce the processing and assembly costs, and save the slip rings and brushes that are prone to problems, so it is widely used.

However, when the permanent magnet synchronous motor is controlled, vector control is required, and the decoupling of the quadrature axis is required in the control principle. Therefore, an encoder is usually installed, because the encoder is often connected in a one-to-one manner. Drive the frequency converter, which leads to the single-station, one-to-one driving test of the permanent magnet synchronous motor, which makes the test rhythm of the permanent magnet synchronous motor slower and seriously reduces the efficiency of the test.

Utility model content

In view of this, the purpose of the present invention is to provide a multi-station test system and a test platform to alleviate the above-mentioned technical problems.

In the first aspect, an embodiment of the present utility model provides a multi-station test system, including: a control module, an incoming line module, a voltage switching matrix, a frequency conversion module, an output switching matrix and an output module; wherein the incoming line module, The voltage switching matrix, the frequency conversion module, the output switching matrix and the output module are connected in sequence; the incoming line module is used for connecting with the power supply system, and the output module is used for connecting with at least one assembly line device; The control terminals of the voltage switching matrix and the output switching matrix are connected to the control module; the control module is used for switching control of the voltage switching matrix and the output switching matrix to switch at least one of the pipeline devices the corresponding test line.

In combination with the first aspect, the embodiment of the present invention provides the first possible implementation of the first aspect, wherein the incoming line module includes a circuit breaker and a transformer unit connected in sequence; the circuit breaker is provided in the power supply system On the connection path with the transformer unit; the transformer unit is provided with at least one AC bus.

In conjunction with the first possible implementation manner of the first aspect, the embodiment of the present invention provides the second possible implementation manner of the first aspect, wherein the voltage switching matrix is provided with a switch corresponding to at least one of the AC bus bars branch; one end of the switching branch is connected to the AC bus, and the other end is connected to the frequency conversion module; each switching branch is provided with a switching switch; the control module is used to control the switching switch Perform switching control, so that the frequency conversion module is connected to the corresponding AC bus.

With reference to the second possible implementation manner of the first aspect, the embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the above-mentioned frequency conversion module includes at least one frequency converter; The input ends are all connected to the AC bus through the switching branch; the output end of each frequency converter is correspondingly provided with an output line.

In conjunction with the third possible implementation manner of the first aspect, the embodiment of the present invention provides the fourth possible implementation manner of the first aspect, wherein the above-mentioned output switching matrix includes an output branch corresponding to each of the output lines. One end of the output branch is connected to the output line, and the other end is connected to the pipeline equipment through the output module; each output branch is provided with an output switch; the control module is used to The output switch performs output control, so that the assembly line device is connected to the corresponding frequency converter.

In conjunction with the first aspect, the embodiment of the present utility model provides a fifth possible implementation manner of the first aspect, wherein the above-mentioned multi-station test system further includes a measurement module connected to the control module; the measurement module is arranged in the On the connection path between the frequency conversion module and the output module; the measurement module includes a measurement loop and an output loop connected in sequence; the control module is also used to connect the measurement loop and the output loop to pass the The measurement loop collects electrical parameters of the pipeline equipment.

With reference to the fifth possible implementation manner of the first aspect, the embodiment of the present invention provides the sixth possible implementation manner of the first aspect, wherein the above-mentioned control module includes a controller, and a control matching the controller a loop; the voltage switching matrix, the output switching matrix and the measurement module are all connected with the control loop.

With reference to the sixth possible implementation manner of the first aspect, the embodiment of the present utility model provides the seventh possible implementation manner of the first aspect, wherein the above-mentioned multi-station test system further includes a test instrument module; the test instrument The module includes an industrial computer and at least one test instrument connected to the industrial computer; wherein the industrial computer is connected to the controller; the test instrument is also connected to the measurement loop for testing the assembly line equipment Connection test parameters.

In a second aspect, the embodiment of the present invention further provides a test platform, and the test platform is configured with the multi-station test system described in the first aspect.

In conjunction with the second aspect, the embodiment of the present invention provides a first possible implementation of the second aspect, wherein the above-mentioned test platform is provided with at least one test station; each of the test stations is configured with a matching assembly line equipment The pallet is used to place the assembly line equipment.

The embodiment of the present utility model brings the following beneficial effects:

The multi-station test system and the test platform provided by the embodiment of the present utility model, the incoming line module, the voltage switching matrix, the frequency conversion module, the output switching matrix and the output module are connected in sequence, and the control of the voltage switching matrix and the output switching matrix The terminal is connected to the control module. When the incoming module is connected to the power supply system and the output module is connected to at least one pipeline device, the control module can switch the voltage switching matrix and the output switching matrix to switch the test corresponding to at least one pipeline device. circuit, and then realize the test of the pipeline equipment, and the process that the above-mentioned control module performs switching control on the voltage switching matrix and the output switching matrix, because the test circuit corresponding to the pipeline equipment can be switched, so that through a set of provided in the embodiment of the present utility model The multi-station test system realizes the simultaneous online test of multiple assembly line equipment, which effectively improves the efficiency of the test.

Other features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the description, claims and drawings.

In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and easy to understand, preferred embodiments are given below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained from these drawings without creative work.

Fig. 1 is the structural representation of a kind of multi-station test system that the utility model embodiment provides;

2 is a schematic diagram of a voltage switching matrix provided by an embodiment of the present invention;

3 is a schematic diagram of an output switching matrix provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another multi-station test system provided by an embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model. not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

At present, since the permanent magnet synchronous motor needs to use vector control, the decoupling of the quadrature axis is required in the control principle, so it is usually necessary to install an encoder, because the encoder is often connected to the drive inverter in a one-to-one way. As a result, the tests of permanent magnet synchronous motors are all single-station, one-to-one drive tests. This approach has the following problems:

(1) The system compatibility is poor, usually a single line can only produce motors of a single specification and model;

(2) The equipment investment is large, usually dozens of sets of equipment are needed to produce a series of motors;

(3) The test rhythm is slow. Since most of the current test systems are manual test methods, only dozens of motors can be tested a day on one line.

Based on this, a multi-station test system and a test platform provided by the embodiments of the present invention can effectively alleviate the above technical problems.

In order to facilitate the understanding of this embodiment, a multi-station test system disclosed in the embodiment of the present utility model is first introduced in detail.

In a possible implementation, an embodiment of the present invention provides a multi-station test system, as shown in FIG. 1 , a schematic structural diagram of a multi-station test system, including: a control module 10, an incoming line module 20. Voltage switching matrix 30, frequency conversion module 40, output switching matrix 50 and output module 60;

Wherein, the above-mentioned incoming line module 20, voltage switching matrix 30, frequency conversion module 40, output switching matrix 50 and output module 60 are connected in sequence; incoming line module 20 is used to connect with the power supply system, and the output module is used to connect with at least one assembly line device.

Further, the control terminals of the voltage switching matrix 30 and the output switching matrix 50 are connected to the control module 10; the control module 10 is also used for switching control of the voltage switching matrix and the output switching matrix to switch the test circuit corresponding to at least one assembly line device.

In actual use, the above-mentioned power supply system usually refers to the direct power supply system corresponding to the power grid, and the incoming line module is directly connected to the power grid to obtain the energy supply required by the multi-station test system. Further, the above-mentioned assembly line equipment usually refers to a motor, specifically, a multi-finger permanent magnet synchronous motor. Since there are usually many assembly line equipment, the above-mentioned output module includes a plurality of output interfaces, and each output interface can be connected to a station to realize multiple output interfaces. On-line test of assembly line equipment of 1 station. In addition, since the multi-station test system provided by the embodiment of the present invention can switch the voltage switching matrix and the output switching matrix through the control module, so as to switch the test circuit corresponding to at least one assembly line device, so that when multiple assembly line devices are tested, , which can realize the simultaneous online test process of multiple assembly line equipment of different specifications and models on one assembly line.

Therefore, in the multi-station test system provided by the embodiment of the present invention, the incoming line module, the voltage switching matrix, the frequency conversion module, the output switching matrix and the output module are connected in sequence, and the control terminals of the voltage switching matrix and the output switching matrix are connected in sequence. Connected to the control module, when the incoming module is connected to the power supply system and the output module is connected to at least one assembly line device, the control module can switch the voltage switching matrix and the output switching matrix to switch the test circuit corresponding to at least one assembly line device , and then realize the test of the pipeline equipment, and the process that the above-mentioned control module performs switching control on the voltage switching matrix and the output switching matrix, because the test circuit corresponding to the pipeline equipment can be switched, so that through a set of multiple sets provided in the embodiment of the present utility model The station test system realizes the simultaneous online test of multiple assembly line equipment, which effectively improves the efficiency of the test.

In actual use, in order to ensure that the multi-station test system provided by the embodiment of the present invention can be smoothly connected to the power grid, the above-mentioned incoming line module includes a circuit breaker and a transformer unit connected in sequence; wherein, the circuit breaker is arranged between the power supply system and the transformer. On the connection path of the unit; the transformer unit is provided with at least one AC bus.

Specifically, the transformer unit may include a single transformer or multiple transformers. Further, a single transformer may have multiple windings so as to output multiple voltages of different levels. For example, taking a single transformer including multiple windings as an example, by The transformer can realize the voltage conversion from the single voltage of the power grid to the multi-voltage of the multi-station test system. For example, the primary voltage is 380V, and the voltage output required by the test can be realized through the transformer, such as 220V, 380V, 460V, 690V, etc. At this time, the transformer unit One AC bus can be designed for each voltage level, and the frequency conversion module can be connected to the required AC bus through the above voltage switching matrix.

Further, the voltage switching matrix in the embodiment of the present invention is provided with a switching branch corresponding to at least one AC bus; one end of the switching branch is connected to the AC bus, and the other end is connected to the above-mentioned frequency conversion module.

For ease of understanding, Fig. 2 shows a schematic diagram of a voltage switching matrix, and for ease of explanation, in Fig. 2, the transformer outputs two voltages as an example for illustration, and there are also two corresponding AC busbars. The gear voltage is 220V/380V as an example. The voltage switching matrix is shown in Figure 2. The AC busbar corresponding to the transformer voltage output is designed to facilitate the connection of the frequency conversion module.

Progress, as shown in Figure 2, each switching branch is provided with a switch, that is, the switch S1 in Figure 2, and the above control module is also used to perform switching control on the switch, so that the frequency conversion module is connected to the corresponding AC busbar.

Further, the above-mentioned frequency conversion module includes at least one frequency converter; the input end of each frequency converter is connected to the AC bus through the above-mentioned switching branch, that is, AC220V or AC380V in FIG. 2, the output end of each frequency converter is correspondingly provided with an output line for easy connection to the output switching matrix.

For the convenience of description, in FIG. 2 , the frequency conversion module includes four frequency converters as an example for description, and each frequency converter can be connected to the above-mentioned AC bus through the above-mentioned voltage switching matrix. Further, since each inverter has a corresponding switching branch, the inverter can be set to the same specification and model, or can be set to different specifications and models. The setting conditions are selected under different voltage levels, and the specific number of frequency converters, specifications and models can be set according to the actual use conditions, which is not limited in the embodiment of the present invention.

Further, the above-mentioned output switching matrix includes an output branch corresponding to each output line; one end of each output branch is connected to the output line, and the other end is connected to the pipeline device through the output module; for ease of understanding, Fig. 3 also shows A schematic diagram of an output switching matrix, wherein, for the convenience of description, the above-mentioned frequency conversion module includes four frequency converters as an example for description, that is, the frequency converters 1.1U to 1.4U in FIG. There are four output lines, namely the inverter output lines 1-4 in Figure 3.

The output module in the embodiment of the present invention is used to extend each output branch of the output switching matrix to each pipeline device. For example, four pipeline devices are taken as an example in FIG. 3 , that is, the four pipeline devices in FIG. For motors M1 to M4, each output branch of the output switching matrix is extended to the pipeline equipment correspondingly, and then the corresponding pipeline equipment is tested.

Specifically, as shown in FIG. 3, each output branch is provided with an output switch S2, wherein, for the convenience of description, only one output switch S2 is marked in FIG. 3, and the above-mentioned control module is used for output control of the output switch, In order to connect the assembly line equipment to the corresponding frequency converter, and usually, the output end of the frequency converter is usually also provided with switches, ie, multiple switches S in FIG. 3 , so as to control the output of the frequency converter.

For example, if the motor M1 needs to be controlled by the inverter 1.1U, the inverter 1.1U can be directly extended to the motor M1 through the output branch a, and the output switches of the output branches corresponding to the output lines of other inverters are disconnected; if the motor M1~M4 all need to be connected to the inverter 1.1U, then the output switch of the output branch corresponding to the output line 1 of the inverter and the motor M1~M4 can be closed, and the output switches of the output branches of the other inverters can be disconnected. Yes; if each motor needs to be connected to a different inverter, it can also be controlled by closing or opening the output switch of the corresponding output branch, so as to realize the connection of different assembly line equipment (motors) to the corresponding inverter. .

In addition, in order to implement comprehensive testing and testing of the assembly line equipment, the multi-station test system provided by the embodiment of the present invention can also collect or measure the electrical parameters of the assembly line equipment. Therefore, the multi-station test system provided by the embodiment of the present invention The test system also includes a measurement module connected to the control module.

For ease of understanding, FIG. 4 also shows a schematic structural diagram of another multi-station test system. In FIG. 4 , the frequency conversion module includes four frequency converters as an example for illustration. Except for the partial structure shown in FIG. 1 , Also includes a measurement module.

Specifically, the measurement module is arranged on the connection path between the frequency conversion module and the output module, that is, on the connection path between the output end of the frequency conversion module and the output module. As shown in FIG. 4 , the measurement module includes a measurement loop 701 and The output loop 702; the above-mentioned control module 10 is also used to connect the measurement loop and the output loop, so as to collect the electrical parameters of the pipeline equipment through the measurement loop.

Further, the control module in the embodiment of the present invention includes a controller and a control loop matched with the controller; the voltage switching matrix, the output switching matrix and the measurement module are all connected with the control loop. Specifically, FIG. 4 shows the control loop. controller 703 and control loop 704.

In actual use, the controller in the embodiments of the present invention mostly adopts PLC (Programmable logic Controller, programmable logic controller) controller, and the corresponding control loop is also a control loop matched with the PLC controller, including the start-stop circuit , tripping, closing circuit, monitoring circuit and other functional circuits. Specifically, the control circuit can be set according to the function and model of the specific PLC controller, which is not limited by the embodiment of the present invention.

Further, the above-mentioned measurement loop and output loop can realize the measurement function of the multi-station test system. When it is necessary to measure the electrical parameters of the assembly line equipment, the circuit branch where the measurement module is located can be selected, and the measurement loop and output can be connected through the control module. loop to realize the collection of electrical parameters, and the specific electrical parameters may include parameters such as current and voltage. Therefore, the above-mentioned measurement loop usually includes a sampling circuit, a comparison circuit, an AD conversion circuit, etc., so as to realize the collection of the electrical parameters of the above-mentioned analog signal type. . The specific measurement loop, output loop, and electrical parameters can be set according to the actual collected electrical parameters, which are not limited in this embodiment of the present invention.

In addition, as shown in FIG. 4 , the multi-station test system provided by the embodiment of the present invention further includes a test instrument module; specifically, the test instrument module includes an industrial computer 705 and at least one test instrument connected to the industrial computer; wherein , the industrial computer is connected with the controller; the test instrument is also connected with the measurement loop, which is used to test the test parameters of the connection of the pipeline equipment.

In specific implementation, the above-mentioned test instrument module is usually set in the control cabinet, and at least one test instrument can be set according to actual test requirements, for example, it may include an electrical parameter measuring instrument, a DC resistance instrument, an insulation instrument, a withstand voltage instrument, etc. The instrument is connected to the measurement loop and the industrial computer respectively to realize the measurement of test parameters, for example, to measure the DC resistance, insulation performance, grounding resistance, withstand voltage and so on of the assembly line equipment.

Further, the above-mentioned industrial computer refers to an industrial control computer, which can be used in industrial control, testing and other fields, and obtain external data through a standard serial port (serial port such as RS232/485), calculate through the internal microprocessor, and finally Through the display screen or output through the serial port, etc., the specific model of the industrial computer can be set according to the actual use requirements, which is not limited in the embodiment of the present invention.

In addition, for the convenience of explanation, four pipeline equipments are also shown in FIG. 4 , taking the pipeline equipment as the test motor as an example for description, based on the schematic structural diagram of the multi-station test system shown in FIG. The realization principle of the multi-station test system is as follows:

(1) The incoming line of the power grid is connected to the transformer 1T after passing through the circuit breaker D1 of the incoming line module; the transformer 1T is connected to the inverter after passing through the voltage switching matrix;

(2) The output of the inverter is divided into two channels. One channel is output to the test motor through the measurement circuit and the output circuit, and the other channel is output to the test motor through the output switching matrix. The two channels can be switched through the control circuit. Select the measurement loop when it is selected, otherwise turn on the output switching matrix loop;

(3) The measuring instruments (including: electrical parameter measuring instrument, DC resistance instrument, insulation instrument, withstand voltage instrument, etc.) are respectively connected to the measuring circuit and connected to the industrial computer through the communication cable; the industrial computer and the controller (such as PLC control controller) connection, the controller PLC is connected with the control loop.

Based on the above-mentioned realization principle, the test process of the multi-station test system provided by the embodiment of the present invention includes: when measuring non-electrical parameters (such as resistance, insulation performance, withstand voltage value), the industrial computer+controller passes through the control loop, Connect and test multiple stations one by one; when measuring electrical parameters, each station is output to the test motor through the selected inverter through the output switching matrix, and switches to the measurement loop when electrical parameter measurement is required. The circuit is used to measure and read the electrical parameter information such as the voltage and current of the test motor. After the measurement, it switches back to the output switching matrix circuit.

Therefore, the multi-station test system provided by the embodiment of the present invention can realize the comprehensive performance detection of test motors, such as permanent magnet synchronous motors, through a set of multi-station test systems. Fully automatic detection to improve detection efficiency.

Further, on the basis of the above embodiments, the embodiments of the present invention further provide a test platform, and the test platform is configured with the multi-station test system described in the above embodiments.

Further, the above-mentioned test platform is provided with at least one test station; each test station is configured with a support plate matched with the assembly line equipment, and the support plate is used for placing the assembly line equipment. For example, the pallets in Figure 4, etc., are matched with the test motor to facilitate the test of the test motor.

The test platform provided by the embodiment of the present invention has the same technical features as the station test system provided by the above-mentioned embodiment, so it can also solve the same technical problem and achieve the same technical effect.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, for the specific working process of the test platform described above, reference may be made to the corresponding process in the foregoing embodiment, which will not be repeated here.

In addition, in the description of the embodiments of the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

Finally, it should be noted that the above embodiments are only specific implementations of the present invention, and are used to illustrate the technical solutions of the present invention, rather than restricting them. The protection scope of the present invention is not limited to this, although referring to The foregoing embodiments have described the present utility model in detail, and those skilled in the art should understand that: any person skilled in the art is within the technical scope disclosed by the present utility model, and it can still carry out the technical solutions recorded in the foregoing embodiments. Modifications or changes can be easily imagined, or equivalent replacements are made to some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the within the scope of protection of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. A multi-station testing system, comprising: the system comprises a control module, an incoming line module, a voltage switching matrix, a frequency conversion module, an output switching matrix and an output module;

the incoming line module, the voltage switching matrix, the frequency conversion module, the output switching matrix and the output module are connected in sequence; the incoming line module is used for being connected with a power supply system, and the output module is used for being connected with at least one assembly line device;

the control ends of the voltage switching matrix and the output switching matrix are connected with the control module;

the control module is used for carrying out switching control on the voltage switching matrix and the output switching matrix so as to switch at least one test line corresponding to the assembly line equipment.

2. The multi-station testing system according to claim 1, wherein the incoming line module comprises a circuit breaker and a transformer unit connected in series;

the circuit breaker is arranged on a connecting circuit of the power supply system and the transformer unit;

the transformer unit is provided with at least one alternating current bus.

3. A multi-station testing system according to claim 2, wherein said voltage switching matrix is provided with switching branches corresponding to at least one of said ac busbars;

one end of the switching branch is connected to the alternating current bus, and the other end of the switching branch is connected to the frequency conversion module;

each switching branch is provided with a switch;

the control module is used for switching and controlling the change-over switch so that the frequency conversion module is connected to the corresponding alternating current bus.

4. A multi-station testing system according to claim 3, wherein said frequency conversion module comprises at least one frequency converter;

the input end of each frequency converter is connected to the alternating current bus through the switching branch;

and the output end of each frequency converter is correspondingly provided with an output line.

5. The multi-station testing system according to claim 4, wherein said output switching matrix includes an output branch corresponding to each of said output lines;

one end of the output branch is connected to the output line, and the other end of the output branch is connected to the assembly line equipment through the output module;

each output branch is provided with an output switch;

the control module is used for carrying out output control on the output switch so as to enable the assembly line equipment to be connected to the corresponding frequency converter.

6. A multi-station testing system according to claim 1, further comprising a measurement module connected to said control module;

the measuring module is arranged on a connecting circuit of the frequency conversion module and the output module;

the measuring module comprises a measuring loop and an output loop which are connected in sequence;

the control module is also used for connecting the measuring loop and the output loop so as to acquire the electrical parameters of the assembly line equipment through the measuring loop.

7. The multi-station testing system according to claim 6, wherein said control module comprises a controller, and a control circuit mated with said controller;

the voltage switching matrix, the output switching matrix and the measuring module are all connected with the control loop.

8. A multi-station testing system according to claim 7, further comprising a test meter module;

the test instrument module comprises an industrial personal computer and at least one test instrument connected with the industrial personal computer;

the industrial personal computer is connected with the controller; the test instrument is also connected with the measurement loop and used for testing test parameters connected with the assembly line equipment.

9. A test platform, characterized in that the test platform is provided with a multi-station test system according to any one of claims 1 to 8.

10. The test platform of claim 9, wherein the test platform is provided with at least one test station;

each test station is provided with a supporting plate matched with assembly line equipment, and the supporting plate is used for placing the assembly line equipment.

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