CN218156211U - Sensor testing device - Google Patents

Abstract

The utility model discloses a sensor testing arrangement, including the phonograph record machine body, the phonograph record machine body includes rotatable revolving stage and phonograph record machine base, phonograph record machine base fixed mounting has the fixed bolster, fixed bolster fixedly connected with encoder, the encoder is located position directly over the rotatable revolving stage, the pivot of encoder with rotatable revolving stage fixed connection, the encoder with the coaxial rotation of rotatable revolving stage. This application is through combining the encoder repacking with the phonograph base to sensor testing arrangement to carry on the reversal relay through the controller and open and stop the automatic control that the relay carries out testing arrangement, this application has the test cost who reduces sensor testing arrangement, improves the effect to the efficiency of software testing of sensor.

Description

Sensor testing device

Technical Field

The utility model belongs to the technical field of sensor testing arrangement and specifically relates to a sensor testing arrangement is related to.

Background

At present, along with the rapid development of the internet of things and big data era, more and more sensors are widely applied to various intelligent products, especially, the inertial measurement unit taking the MEMS as the core is more generally applied to the fields of unmanned driving, unmanned aerial vehicles, ARs, VRs and the like, and a test turntable is needed in the process of calibrating and testing the inertial measurement unit.

The high accuracy test revolving stage that has now on the market mainly has two advantages: the first is that the stop position can be accurately controlled by one rotation; secondly, the adjusting range of the rotating speed is very wide and can be set within the range from zero to several hundred degrees per second. Therefore, the selling price of the high-precision testing rotary tables is also higher, if the testing requirement is not high, for example, only a certain fixed rotating speed needs to be set and the angle value of the rotary table when the rotary table stops is obtained when the sensor is debugged, in this situation, expensive high-precision testing rotary tables are purchased, the testing cost is obviously increased, and the rotary tables with lower testing cost need to be sought urgently.

SUMMERY OF THE UTILITY MODEL

In order to reduce the test cost of sensor testing arrangement, this application provides a sensor testing arrangement.

The application provides a sensor testing arrangement adopts following technical scheme:

the utility model provides a sensor testing arrangement, includes the record player body, the record player body includes rotatable revolving stage and record player base, record player base fixed mounting has the fixed bolster, fixed bolster fixedly connected with encoder, the encoder is located position directly over the rotatable revolving stage, the pivot of encoder with rotatable revolving stage fixed connection, the encoder with the coaxial rotation of rotatable revolving stage.

Because the existing high-precision turntable with the adjustable rotating speed is high in selling price (for example, the brand is accutron, the model is AC1120Si; the brand is HONC _ ST300 of Shanghai hong measurement, and the model is STVP-200 single-shaft turntable), in order to reduce the test cost, the sensor test is carried out by modifying a CD player, and the calibration test is carried out on the sensor placed on the rotatable turntable by matching a record player base with stable rotating speed and adjustable rotating speed with the rotatable turntable and an encoder for acquiring the rotating angle of the rotatable turntable; during the test, be fixed in the rotatable revolving stage of record player with the attitude sensor who awaits measuring to start record player base, make it rotate according to setting for the rotational speed, and gather the turned angle of rotatable revolving stage in the time of predetermineeing through the encoder, adjust the turned angle parameter that the sensor was markd with this, for current high accuracy revolving stage on the market, testing arrangement's after this application repacking testing cost is lower.

Preferably, the test apparatus further comprises: an offset compensator fitted between a rotating shaft of the encoder and the rotatable turntable.

By adopting the technical scheme, because the rotating shaft of the encoder is usually a metal connecting rod made of rigid material, when the rotating shaft of the encoder is driven by the rotatable turntable to rotate coaxially, the rotating shaft of the encoder is easy to generate rigid overload and break, and the service life of the testing device is influenced; therefore, an offset compensation part is arranged between the rotating shaft of the encoder and the rotatable turntable, the overload influence on the rotating shaft caused by the rotation of the rotatable turntable in the coaxial rotation process is reduced, the synchronous rotation between the rotating shaft of the encoder and the rotatable turntable is met, and the test error is reduced.

Preferably, the test apparatus further comprises: a connecting rod vertically installed at the central axis position of the rotatable turntable; the offset compensation part is arranged as a shaft connector, one end of the connecting rod, which is far away from the rotatable turntable, is fixedly connected with one end of the shaft connector, and the other end of the shaft connector is fixedly connected with a rotating shaft of the encoder.

Through adopting above-mentioned technical scheme, through the coaxial rotation of the elastomeric buffer spare between the pivot of axle connector to the encoder and the rotatable revolving stage cushion, reduce the overload influence that rotatable revolving stage rotated the pivot that causes the encoder, improve testing arrangement's life, also reduce the error influence that the rotation between encoder and the rotatable revolving stage caused to the test result asynchronously simultaneously.

Preferably, the test apparatus further comprises: the encoder is fixedly arranged in the sleeve, and a rotating shaft of the encoder penetrates through one end, far away from the supporting rod, of the sleeve and is fixedly connected with one end of the shaft connector; the test device further comprises: and the locking piece is used for locking the supporting rod and the fixing bracket.

Through adopting above-mentioned technical scheme, through bracing piece and telescopic mutually supporting, make the encoder be located rotatable revolving stage position directly over all the time, and fix bracing piece and fixed bolster through the locking piece, improve the assembly stability of encoder and rotatable revolving stage.

Preferably, the end part of the supporting rod is provided with a limiting groove; the locking member includes: the limiting rods are oppositely arranged on two sides of the end part of the supporting rod, one end of each limiting rod is inserted into the corresponding limiting groove, and the other end of each limiting rod is fixedly connected with the corresponding fixed support.

Through adopting above-mentioned technical scheme, peg graft in the spacing recess of bracing piece through the gag lever post that sets up relatively to make the other end and the fixed bolster of gag lever post carry out fixed connection, thereby make and lock each other between bracing piece and the fixed bolster, thereby make the assembly that remains stable between bracing piece and the fixed bolster, thereby further improve the assembly stability between fixed bolster and the bracing piece.

Preferably, the test device comprises: and the controller is electrically connected with the encoder and the rotatable turntable respectively.

By adopting the technical scheme, the pulse data collected by the encoder is calculated through the external controller, the actual rotation angle information of the rotatable turntable is output, the dynamic adjustment of the test parameters of the attitude sensor to be tested is facilitated according to the actual rotation angle information, and the test efficiency of the inertia measurement unit is improved.

Preferably, the test apparatus further comprises: the record player comprises a start-stop button and a start-stop relay which are arranged on a record player base, wherein one end of the start-stop button is electrically connected with the input end of the start-stop relay, and the other end of the start-stop button is electrically connected with an IO port of the controller; and the output end of the start-stop relay is electrically connected with the other IO port of the controller.

Through adopting the above technical scheme, open through the tester control and stop the button messenger and open and stop the button, open and stop and electrically communicate between relay and the controller, begin to carry out preliminary calibration test according to the rotational speed of settlement, and according to preliminary calibration test result, set up the parameter of examination mark sensor that awaits measuring, after accomplishing the calibration test, the controller is to opening the start-stop signal that stops that the relay sent the correspondence, open and stop the relay and open or stop the button according to the received signal of telecommunication developments, thereby according to the actual test process, the rotatable revolving stage that opens or close the record player base automatically rotates, thereby pass through the controller, open and stop the relay and open and stop the dynamic cooperation between the button and carry out automated control to opening and close of rotatable revolving stage, and the test efficiency of testing arrangement is improved.

Preferably, the test apparatus further comprises: the reversal button and the reversal relay are arranged on the base of the disc player; one end of the reverse button is electrically connected with the input end of the reverse relay, the other end of the reverse button is electrically connected with one IO port of the controller, and the output end of the reverse relay is electrically connected with the other IO port of the controller.

Through adopting above-mentioned technical scheme, in the calibration test process, according to the actual calibration test parameter of the sensor that awaits measuring, come through the connection and the disconnection of reversal relay control reversal button, and then the rotation direction of the rotatable revolving stage of control, after the controller set up the test parameter of the sensor that awaits measuring, the signal of telecommunication of the rotatable revolving stage rotation direction of adjustment that will correspond sends to the reversal relay, the reversal relay comes the connection or the disconnection of dynamic adjustment reversal button according to the received signal of telecommunication, thereby through the controller, mutually support between reversal relay and the reversal button, come to carry out automated control to the rotation direction of rotatable revolving stage, thereby improve testing arrangement's test degree of automation, and then improve efficiency of software testing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the turntable is modified to carry out sensor test, and the turntable base and the turntable which are stable in rotating speed and adjustable in rotating speed are matched with the encoder for acquiring the rotating angle of the turntable, so that the sensor placed on the turntable is calibrated and tested; during testing, the attitude sensor to be tested is fixed on a rotatable turntable of the disc player, a base of the disc player is started to rotate according to a set rotating speed, and a rotating angle of the rotatable turntable within preset time is acquired through an encoder, so that rotating angle parameters calibrated by the sensor are adjusted, and compared with the conventional high-precision turntable on the market, the testing device modified by the method is lower in testing cost;

2. dynamically adjusting the test parameters of the sensor to be tested according to the actual rotating speed of the rotatable turntable through the controller, sending corresponding adjusting electric signals to the start-stop relay or the reverse relay according to the adjusted test parameters, controlling the start-stop relay to automatically adjust the start and stop of the start-stop button according to the adjusting electric signals, or controlling the reverse relay to automatically adjust the start and stop of the reverse button according to the adjusting electric signals; the rotation of rotating the rotary table is opened and closed or the rotation direction is dynamically adjusted through the controller, so that the test automation and the test efficiency of the test device are improved.

Drawings

Fig. 1 is an overall assembly structural view of a sensor testing device according to the present embodiment.

Fig. 2 is a schematic view of an assembly structure of an encoder and a shaft coupling of the testing apparatus in this embodiment.

Fig. 3 is an enlarged view of the locking member of the testing device of the present embodiment.

Fig. 4 is a schematic diagram of the circuit connection relationship of the controller, the reverse relay and the start-stop relay.

Description of reference numerals:

1. a disc player body; 11. a rotatable turntable; 12. a phonograph base; 13. a start-stop button; 14. a reverse button; 2. fixing a bracket; 3. an encoder; 4. an offset compensator; 41. a shaft coupling; 5. a connecting rod; 6. a support bar; 61. a limiting groove; 7. a sleeve; 8. a locking member; 81. a limiting rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses sensor testing arrangement. Referring to fig. 1 and 2, a sensor testing device includes a disc player body 1, the disc player body 1 includes a rotatable turntable 11 and a disc player base 12, the rotatable turntable 11 is set to be a disc type, a fixed support 2 is fixedly installed on the disc player base 12, the fixed support 2 is rectangular and is matched with the disc player base 12 in shape and size, four feet of the fixed support 2 are respectively fixed on the disc player base 12, the fixed support 2 is fixedly connected with an encoder 3, the encoder 3 is used for acquiring an actual rotation angle of the rotatable turntable 11 in real time, the encoder 3 is located right above the rotatable turntable 11, a rotating shaft of the encoder 3 is fixedly connected with the rotatable turntable 11, and the encoder 3 is driven to coaxially rotate by the rotation movement of the rotatable turntable 11; the testing apparatus further comprises an offset compensator 4, the offset compensator 4 being fitted between the rotary shaft of the encoder 3 and the rotatable turntable 11. The calibration test of the sensor to be tested is carried out by the testing device obtained by modifying the rotatable turntable 11 and the encoder 3, and compared with the existing high-precision turntable product, the calibration test cost is lower.

Referring to fig. 2, the testing apparatus further includes a connecting rod 5 vertically installed at a central axis position of the rotatable turntable 11, the offset compensator 4 in this embodiment is provided as a shaft coupler 41, one end of the shaft coupler 41 is fixedly connected with one end of the connecting rod 5 far away from the rotatable turntable 11, and the other end of the shaft coupler 41 is fixedly connected with the rotating shaft of the encoder 3. The buffering action of the shaft coupling 41 reduces the overload influence caused by the coaxial rotation between the rotary shaft of the encoder 3 and the rotatable turntable 11.

Referring to fig. 1 and 2, the test apparatus further includes: a support rod 6 assembled on the fixed support 2, wherein the support rod 6 is fixedly connected with a sleeve 7 with a hollow inner part, one end of the sleeve 7 is fixedly connected with the support rod 6, and the other end of the sleeve 7 extends towards the central shaft direction of the rotatable turntable 11 and is positioned right above the central shaft position of the rotatable turntable 11; the encoder 3 is fixedly arranged in the sleeve 7, and a rotating shaft of the encoder 3 penetrates through one end, far away from the support rod 6, of the sleeve 7 and is fixedly connected with one end of the shaft connector 41; the test device further comprises: and a locking member 8 for locking the support bar 6 and the fixing bracket 2. By the mutual cooperation of the support rod 6, the sleeve 7 and the locking member 8, the assembling stability of the encoder 3 and the rotatable turn table 11 is improved.

Referring to fig. 3, the end position of the support rod 6 is provided with a limit groove 61, and the locking member 8 includes: set up the gag lever post 81 in 6 tip both sides of bracing piece relatively, the one end of gag lever post 81 is pegged graft in spacing recess 61, the other end and the fixed bolster 2 fixed connection of gag lever post 81. Through mutually supporting of gag lever post 81 and spacing recess 61, improve the assembly stability of bracing piece 6 and fixed bolster 2.

Referring to fig. 4, the test apparatus further includes: the controller is respectively and electrically connected with the encoder 3 and the rotatable turntable 11, IO ports of the controller are respectively and correspondingly connected with the output end and the output end of the encoder 3 one by one, the controller and the encoder are connected through wires, the controller reads pulse data of the encoder 3 and calculates rotating angle data of the rotatable turntable 11, the controller is connected with the computer end through a preset serial port communication module through wires, the controller sends the received rotating data of the encoder to the computer end, the computer end is wirelessly connected with the sensor to be tested to acquire calibration parameters of the sensor to be tested, and the calibration parameters of the sensor to be tested are adjusted at the computer end according to the rotating angle data acquired by the encoder; the controller is mounted on the base 12 of the record player.

It should be noted that the wired connection between the computer end and the controller is a USB connection, and the wireless connection between the computer end and the attitude sensor to be tested is a bluetooth module or a WiFi module, specifically, the controller in this embodiment is a single chip microcomputer with a model number of NUCLEO-F030R8, and may also be a single chip microcomputer with other models according to actual needs, which is not limited to one model in this embodiment.

The test device further comprises: the starting and stopping button 13 and the starting and stopping relay are arranged on the base 12 of the disc player, the starting and stopping button 13 is electrically connected with the input end of the starting and stopping relay, the other end of the starting and stopping button 13 is electrically connected with an IO port of the controller, and the output end of the starting and stopping relay is electrically connected with the other IO port of the controller; the test device further comprises: set up reversal button 14 and reversal relay on phonograph record base 12, the one end of reversal button 14 is connected with the input of reversal relay electricity, the other end of reversal button 14 is connected with one of them IO port electricity of controller, the output of reversal relay is connected with another IO port electricity of controller, open and close or rotate the direction through the rotation of controller to rotatable revolving stage 11 and carry out dynamic adjustment, thereby improve testing arrangement's test automation and efficiency of software testing.

The implementation principle of the sensor testing device in the embodiment of the application is as follows: the encoder 3, the start-stop relay and the reverse relay are respectively in wired connection with the controller, and the attitude sensor is in wireless connection with the computer end.

When calibrating and testing the sensor to be tested, the attitude sensor to be tested is fixed on the rotatable turntable 11, the rotatable turntable 11 is started to rotate forwards for a preset time according to a preset testing rotating speed, the rotating angle of the rotatable turntable 11 is collected in real time through the encoder 3, the controller acquires the rotating angle collected by the encoder in a wired connection mode and sends the rotating angle to the computer end, the computer end acquires the initial calibration angle of the attitude sensor to be tested in a wireless transmission mode, the initial calibration angle of the attitude sensor is compared with the rotating angle collected by the encoder 3 to determine whether the initial calibration angle of the attitude sensor deviates from the rotating angle collected by the encoder 3, and if the deviation exceeds a preset range, the initial calibration angle of the attitude sensor is adjusted to the rotating angle collected by the encoder 3.

And then controlling the rotatable turntable 11 to rotate forwards for a preset time according to a preset test rotating speed, further confirming whether the deviation between the angle calibrated by the attitude sensor and the rotating angle acquired by the encoder 3 is within a preset range, and restarting the calibration test if the deviation exceeds the preset range.

And finally, controlling the rotatable turntable 11 to rotate reversely for a preset time according to a preset test rotating speed, further confirming whether the deviation between the angle calibrated by the attitude sensor and the rotating angle acquired by the encoder 3 is within a preset range, and restarting the calibration test if the deviation exceeds the preset range.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a sensor testing arrangement, its characterized in that, includes CD player body (1), CD player body (1) is including rotatable revolving stage (11) and CD player base (12), CD player base (12) fixed mounting has fixed bolster (2), fixed bolster (2) fixedly connected with encoder (3), encoder (3) are located position directly over rotatable revolving stage (11), the pivot of encoder (3) with rotatable revolving stage (11) fixed connection, encoder (3) with rotatable revolving stage (11) coaxial rotation.

2. A sensor testing device according to claim 1, wherein the testing device further comprises: -an offset compensator (4), said offset compensator (4) being fitted between the axis of rotation of said encoder (3) and said rotatable turntable (11).

3. A sensor testing device according to claim 2, wherein the testing device further comprises: a connecting rod (5) vertically arranged at the central axis position of the rotatable turntable (11); skew compensating part (4) set up to axle connector (41), connecting rod (5) are kept away from the one end of rotatable revolving stage (11) with the one end fixed connection of axle connector (41), the other end of axle connector (41) with the pivot fixed connection of encoder (3).

4. A sensor testing device according to claim 3, wherein the testing device further comprises: the supporting rod (6) is assembled on the fixed support (2), the supporting rod (6) is fixedly connected with a sleeve (7) with a hollow inner part, the encoder (3) is fixedly installed in the sleeve (7), and a rotating shaft of the encoder (3) penetrates through one end, far away from the supporting rod (6), of the sleeve (7) and is fixedly connected with one end of the shaft connector (41); the test device further comprises: a locking member (8) for locking the support bar (6) with the fixing bracket (2).

5. A sensor testing device according to claim 4, characterized in that the end position of the supporting rod (6) is provided with a limiting groove (61); the locking member (8) comprises: the limiting rods (81) are oppositely arranged on two sides of the end portion of the supporting rod (6), one end of each limiting rod (81) is inserted into the corresponding limiting groove (61), and the other end of each limiting rod (81) is fixedly connected with the corresponding fixed support (2).

6. A sensor testing apparatus according to claim 1, wherein the testing apparatus comprises: a controller electrically connected to the encoder (3) and in electrical communication with a control circuit of the rotatable turntable (11).

7. The sensor testing apparatus of claim 6, wherein the testing apparatus further comprises: the record player comprises a start-stop button (13) and a start-stop relay, wherein the start-stop button (13) and the start-stop relay are arranged on a record player base (12), one end of the start-stop button (13) is electrically connected with the input end of the start-stop relay, and the other end of the start-stop button (13) is electrically connected with an IO port of the controller; and the output end of the start-stop relay is electrically connected with the other IO port of the controller.

8. The sensor testing apparatus of claim 6, wherein the testing apparatus further comprises: a reverse button (14) and a reverse relay arranged on the base (12) of the record player; one end of the reversing button (14) is electrically connected with the input end of the reversing relay, the other end of the reversing button (14) is electrically connected with one IO port of the controller, and the output end of the reversing relay is electrically connected with the other IO port of the controller.

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