Three-in-one sensor testing system and method

Abstract

The present application provides a three-in-one sensor testing system, including: a test station, which is arranged in a chassis and has a test station for fixing the tested object; a rotating device, which is arranged below the test station and is used to change the angle of the throttle angle sensor of the tested object; a negative pressure device, which is connected to the chassis; a signal acquisition device, which is arranged on the test station and is used to electrically connect with the tested object to collect test signals. The three-in-one sensor testing system provided by the present application fixes the calibration and testing of the tested object at the test station, thereby avoiding the influence of the moving position of the tested object on the continuity of the test; and, while applying negative pressure, the rotating device rotates the angle position of the throttle sensor, and the signal collector synchronously collects the signal of the tested object in the tested object. The negative pressure environment is closer to the actual use situation, and the collected data is more accurate. Detection is performed when the negative pressure changes continuously and the angle changes at the same time, which improves the efficiency of detection.

Description

Technical Field

[0001] The present application belongs to the technical field of engine throttle three-in-one sensor testing equipment, and in particular, relates to a three-in-one sensor testing system and method. Background Art

[0002] The engine throttle three-in-one sensor includes a throttle angle sensor, an intake pressure sensor, and an intake temperature sensor. The position sensor obtains different throttle positions through the different resistance values ​​or voltage values ​​of the variable resistor in its body. The intake pressure sensor is similar to the air flow sensor. It can measure the change of absolute pressure (vacuum degree) in the intake pipe according to the engine load, and convert it into a voltage signal, which is transmitted to the electronic control unit together with the speed signal.

[0003] As the production efficiency of motorcycle three-in-one sensors increases, the calibration and testing methods of the products also need to be upgraded urgently. The existing calibration system device is divided into two parts. First, the calibration is completed on the calibration device, and then the detection device is used for detection. The entire calibration and detection process is discontinuous and the production cycle is slow. In particular, as the production efficiency of sensors increases, faster testing methods are needed after mass production of products to further improve production efficiency. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a three-in-one sensor testing system to solve the technical problem in the prior art that the three-in-one sensor testing system has a discontinuous testing process, resulting in low production efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a three-in-one sensor testing system, comprising: a testing station, which is arranged in a chassis and has a testing station for fixing a tested object;

[0006] A rotating device, provided below the test station, for changing the angle of the throttle angle sensor of the tested object;

[0007] A negative pressure device is connected to the chassis;

[0008] The signal acquisition device is arranged on the test station and is used to electrically connect with the tested device to collect the test signal.

[0009] Optionally, the signal acquisition device is arranged relative to the test station activity.

[0010] Optionally, the signal collector includes a signal collector, a sliding cylinder, a drive controller and a track. The track is arranged on one side of the test station, the signal collector is arranged on the track, the drive controller is electrically connected to the sliding cylinder, and the sliding cylinder drives the signal collector to reciprocate on the track in a direction toward or away from the test piece.

[0011] Optionally, the rotating device includes a rotating motor and a rotating controller electrically connected to the rotating motor. The rotating shaft of the rotating motor passes through the test station and is inserted into the test piece to be connected to the throttle angle sensor.

[0012] Optionally, the negative pressure device includes an air pump and a pressure regulating valve, the air pump is communicated with the chassis, and the pressure regulating valve is connected to the air pump.

[0013] Optionally, a rotation cylinder is further provided on one side of the test piece, and a pressing block is provided at the lower end of the cantilever of the rotation cylinder, and the pressing block is used to fix the test piece on the test station.

[0014] Optionally, a negative pressure channel is further provided on the corner cylinder, the negative pressure channel is further connected to a pressure device, and the negative pressure channel passes through the pressure block.

[0015] Optionally, an automatic control device is also included, which includes an industrial computer and a display, and the display, drive controller, rotation controller and pressure regulating valve are electrically connected to the industrial computer respectively.

[0016] Another aspect of the present application provides a sensor testing method, which is performed using the above three-in-one sensor testing system, and specifically includes the following steps:

[0017] The tested object is fixed on the testing station, and the tested object is connected to the rotating device;

[0018] By rotating the rotating device, the throttle angle sensor in the tested piece is rotated to a first preset angle;

[0019] Electrically connect the signal acquisition device to the device under test;

[0020] The negative pressure device is started to operate so that the air pressure in the chassis reaches a preset air pressure within a preset time, and the rotating device is controlled to rotate the throttle angle sensor in the test piece to a second preset angle within a preset time;

[0021] The measurement is completed by collecting the output voltage change value and temperature change value in the test piece within a preset time period through the signal collection device.

[0022] Optionally, the output voltage change value and the temperature change value are compared with corresponding standard values. When the error is within an acceptable range, the tested device is qualified.

[0023] The beneficial effects of the three-in-one sensor testing system provided by the present application are as follows: the device in the present application sets a test station to fix the test piece, and then sets a rotating device and a signal acquisition device near the test station. After the calibration is completed by changing the angle of the throttle sensor of the test piece through the rotating device, it is connected to the signal acquisition device, and then the angle of the throttle angle sensor is changed. At the same time, the negative pressure device simulates the operating environment to increase the negative pressure for testing. The above technical scheme fixes the calibration and testing of the test piece at the test station, avoiding the influence of the continuity of the test on the moving position of the test piece; and, negative pressure is directly applied to the chassis through the negative pressure device, and the rotating device rotates the angle position of the throttle sensor while applying the negative pressure to collect the signal in the test piece. The negative pressure environment is closer to the actual use situation, and the collected data is more accurate, which improves the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art 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.

[0025] Figure 1 A schematic diagram of the main structure of a three-in-one sensor testing system provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the structure of the tested device provided in the embodiment of the present application;

[0027] Figure 3 A schematic diagram of the top view of the three-in-one sensor testing system provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the structure of the angle cylinder provided in the embodiment of the present application;

[0029] Figure 5 This is a schematic diagram of the changes in input voltage and output voltage of the throttle angle sensor in the embodiment of the present application;

[0030] Figure 6 A schematic diagram of a flow chart of a sensor testing method provided in an embodiment of the present application.

[0031] Among them, the reference numerals in the figure are:

[0032] 100-three-in-one sensor test system; 1-chassis; 2-test station; 3-rotating device; 4-signal acquisition equipment; 5-negative pressure equipment; 6-test piece; 7-sliding cylinder; 8-track; 9-signal collector; 10-rotating motor; 11-air pump; 12-air pipe, 13-angle cylinder; 14-cantilever; 15-pressing block; 16-industrial computer; 17-display; 18-air pressure port; 19-test hole; 20-negative pressure channel; 21-test piece; 22-input voltage curve; 23-output voltage curve; 24-probe; 25-test platform. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Please also read Figures 1 to 3 , the three-in-one sensor testing system provided in the embodiment of the present application is now described.

[0038] The tested piece 6 in this embodiment is a three-in-one sensor used in motorcycle engines. A test platform 25 is provided in the chassis 1, and a test station 2 is provided on the test platform 25. The tested piece 6 is placed on the surface of the test station 2, and the surface of the test station 2 is provided with a concave receiving groove that matches the shape of the tested piece 6. The tested piece 6 can be better fixed by being placed in the receiving groove. In this embodiment, the shape of the tested piece 6 is similar to a rectangular parallelepiped, and the receiving groove is also a corresponding rectangular parallelepiped. It can be understood that the shape of the tested piece 6 can be varied in many ways, and the shape of the receiving groove can be set to be the same as the outer shape of the tested piece 6.

[0039] Specifically, the test piece 6 is provided with an intake pressure sensor, a temperature sensor, and a throttle angle sensor. The pressure sensor measures the actual air pressure in the test piece 6, and is used to display the air pressure condition in the test piece 6 during the test. The temperature sensor is used to measure the temperature change during the test of the test piece 6, and is used to display the stability of the operating condition during the test of the test piece 6. The throttle sensor changes the angular position inside the sensor by rotation, and is used to display the output voltage during the test of the test piece 6.

[0040] The three-in-one sensor testing system 100 in this embodiment includes: a test station 2, a rotating device 3, a signal acquisition device 4 and a negative pressure device 5 arranged in a chassis 1. Specifically, the test station 2 is arranged in the inner cavity of the chassis 1, the rotating device 3 is arranged below the test station 2, the signal acquisition device 4 is arranged on one side of the test station 2, and the negative pressure device 5 is arranged at the bottom of the chassis 1. The signal acquisition device 4 is used to be electrically connected to the test piece 6 and collect the test signal of the test piece 6; the negative pressure device 5 is connected to the inner cavity of the chassis 2 and is used to change the air pressure in the chassis 2.

[0041] Furthermore, a test hole 19 is provided at the bottom of the tested piece 6, and the rotating shaft of the rotating device 3 passes through the test hole 19 and is inserted into the tested piece 6. The throttle sensor in the tested piece 6 is provided near the test hole 19, and the rotating shaft of the rotating device 3 contacts the throttle sensor. When the rotating device 3 rotates, the angle of the throttle sensor is driven to change, thereby adjusting the output voltage of the throttle sensor.

[0042] The rotating device 3 is provided for the calibration of the test piece and for adjusting the rotation angle of the throttle angle sensor during the test, and the rotation angle is determined according to the corresponding calibration and test angles in the three-in-one sensor. The above technical solution ensures that the rotation angle and speed are more accurate, and the signal acquisition device 4 is provided to improve the operating efficiency of the signal collection step, and all the equipment is concentrated in the chassis 2, and mechanical operation is used instead of manual operation throughout the process, thereby improving the accuracy and efficiency of the test.

[0043] Preferably, please refer to Figure 4, the signal acquisition device 4 includes a sliding cylinder 7, a track 8 and a signal collector 9. The sliding cylinder 7 is also connected to a drive controller. The drive controller is used to control the movement of the sliding cylinder 7, including the start, stop, running speed and running direction of the sliding cylinder 7. The signal collector 9 is arranged on the track 8, and the signal collector 9 is used to collect the test signal in the tested object 6. A probe 24 is provided at one end of the signal collector 9 close to the tested object 6, and the probe 24 is used to be electrically connected to the sensor in the tested object 6. The sliding cylinder 7 drives the signal collector 9 to reciprocate on the track 8 in the direction toward or away from the tested object 6. When it is necessary to collect the signal in the tested object 6, the drive controller sends a signal to start the sliding cylinder 7, and the sliding cylinder 7 drives the signal collector 9 to move to the left on the track 8, and then the probe 24 contacts and electrically connects with the tested object 6 to start collecting signals. After the signal test is completed, the drive controller sends a signal to start the sliding cylinder 7, and the sliding cylinder 7 drives the signal collector 9 to move to the right on the track 8, and then the probe 24 is disconnected from the tested object 6. Through the above technical solution, mechanical operation is used instead of manual operation to connect and disconnect the signal collector 9 and the tested device 6, thereby improving work efficiency and accuracy.

[0044] Furthermore, an air pressure sensor, a temperature sensor and a throttle angle sensor are integrated in the test piece 6. The test signals include: the actual air pressure change signal inside the chassis 1, the temperature change signal inside the test piece and the throttle angle change signal. The air pressure change signal is used to monitor the actual intake air pressure value, and the temperature sensor is a thermistor, which is used to sense the temperature change inside the sensor to reflect the internal operating conditions. The above signals are all converted into voltage signal outputs, which are used to monitor the actual changes in the air pressure in the test piece 6, the stability of the angle change of the throttle angle sensor, and whether the internal temperature changes are within the standard range.

[0045] Furthermore, the rotating device 3 includes a rotating motor 10 and a rotating controller electrically connected to the rotating motor 10, and the rotating controller is used to control the rotation of the rotating motor 10, including the start, shut down, and rotation speed and angle of the rotating motor. The rotating shaft of the rotating motor 10 passes through the test station 2 and is inserted into the test piece 6 to drive the throttle angle sensor to move. Using the rotating motor 10 to drive the movement of the angle sensor can ensure that the rotation angle is more accurate and the rotation rate is more stable, thereby improving the accuracy of the test.

[0046] Preferably, the negative pressure device 5 includes an air pump 11 and a pressure regulating valve connected to the chassis 1, and the pressure regulating valve is used to adjust the air pressure. The air pump 11 is connected to the air pressure port 18 through the air pipe 12, and the inner cavity of the chassis 1 is closed. The air pump 11 adjusts the air pressure in the chassis 1 through the air pressure port 18. It can be understood that the location of the air pump 11 is not limited, and it only needs to be connected to the inner cavity of the chassis 1 through the air pipe 12.

[0047] Furthermore, the test station 2 is also provided with an angle cylinder 13, and a pressure block 15 is provided at the lower end of the cantilever 14 of the angle cylinder 13, and the pressure block 15 is used to fix the test piece 6 on the test station 2. The angle cylinder 13 can drive the cantilever 14 to rotate in the horizontal plane and move in the vertical direction. When the test piece 6 needs to be fixed, the cantilever 14 is rotated to above the test piece 6, and the cantilever 14 is moved downward to drive the pressure block 15 to press down the test piece 6, so as to fix the test piece 6. Through the above technical solution, the test piece 6 is fixed by pressing the pressure block 15 by the angle cylinder 13, which improves the efficiency and accuracy of the operation.

[0048] like Figure 4 As shown, a negative pressure channel 20 is also provided on the corner cylinder 13. The inlet end of the negative pressure channel 20 is connected to the pressure device, and the pressure device can generate negative pressure in the negative pressure channel 20. The outlet end of the negative pressure channel is arranged at the lower end of the pressing block 15. When the switch of the negative pressure channel 20 is turned on, the tested piece 6 is adsorbed on the lower end of the cantilever 14, and the tested piece 6 is driven to move under the rotation of the cantilever 14. During the test, the tested piece 21 is placed on the left side of the corner cylinder 13, the corner cylinder 13 is rotated to the left side, the cantilever 14 drives the pressing block 15 to move down to the top of the tested piece 21, the negative pressure channel 20 is opened to adsorb the tested piece 21 to the lower end of the pressing block 15, and then the cantilever 14 is rotated to drive the tested piece 21 to the test station 2, and the air pressure is turned off to separate the tested piece 21 from the pressing block 15 and transferred into the receiving groove, and the transfer of the tested piece 21 is completed. After the test is completed, the pressure equipment is started again, the pressure block 15 absorbs the tested piece, the angle cylinder 14 is rotated, and the cantilever 14 drives the tested piece to the other side of the test station 2. The negative pressure absorption force is closed and disappears, and the tested piece falls to the designated position of the test station 2 to complete the transfer. Through the above technical solution, the angle cylinder is used to absorb and rotate the tested piece 21 to be moved to the test station 2 for calibration and testing; after the test is completed, the angle cylinder is absorbed and rotated to transfer the tested piece 6 to the designated position. The movement of the tested piece 6 is completed mechanically throughout the process, which improves the efficiency of production.

[0049] In a preferred embodiment, the three-in-one sensor test system 100 in the present application further includes an automatic control device, which includes an industrial computer 16 and a display 17 electrically connected to the drive controller, the rotation controller and the pressure regulating valve, and the industrial computer 16 is used to control the three-in-one sensor test system 100 to test the test piece 6. A preset program is input into the industrial computer 16 to control the operation of the drive controller, the rotation controller and the pressure regulating valve, and the display 17 displays various test results in real time during the test process, so that the operator can have a more detailed understanding of the situation during the test process and ensure the accuracy of the test results.

[0050] The beneficial effects of the three-in-one sensor testing system provided in this embodiment are: compared with the prior art, a rotating motor 10 is provided to complete the calibration of the test piece and the rotation during the test process, ensuring that the rotation angle and speed are more accurate, and a sliding cylinder 7 and a track 8 are provided to drive the on and off of each sensor in the signal collector 9 and the test piece 6 to improve the efficiency of the operation, and mechanical operation is used throughout the process instead of manual operation, thereby improving the accuracy and efficiency of the operation.

[0051] Furthermore, please combine Figure 6 Referring to the method for testing a motorcycle three-in-one sensor using the three-in-one sensor testing system 100 in this embodiment, the method specifically includes the following steps:

[0052] Inputting the pre-programmed program into the industrial computer 16;

[0053] The industrial computer 16 controls the rotation controller to open, and opens the air pressure in the negative pressure channel 20, rotates the cantilever 14 to above the test piece 21, and then rotates to above the test station 2, and closes the negative pressure to prevent the test piece from entering the receiving tank;

[0054] The rotary controller controls the descent, and the cantilever 14 descends to drive the pressing block 15 to fix the tested piece 6 on the testing station 2;

[0055] The industrial computer 16 sends a signal to adjust the rotation controller, and the rotation controller controls the rotation motor 10 to rotate to a first preset angle, driving the position sensor to move to a preset angle position, thereby completing the calibration of the test point;

[0056] Entering the test mode, the industrial computer 16 continues to send signals to adjust the drive controller, and the drive controller turns on the sliding cylinder 7 to drive the signal collector 9 to slide leftward on the track 8 and electrically connect with the tested object 6;

[0057] The industrial computer 16 sends the model to the pressure regulating valve and the rotary controller at the same time. The pressure regulating valve starts the air pump 11 to make the air pressure in the chassis 1 reach the preset air pressure within the preset time, and controls the rotary motor 10 to start at the same time and rotate the second preset angle within the preset time.

[0058] The signal collector 9 collects the pressure change value, temperature change value and position change value in the tested object 6 within a preset time period, completes the test, and the display 17 displays the corresponding change curve.

[0059] The negative pressure in the corner cylinder 13 is started, and the pressure block 15 absorbs the tested piece 6. The rotating cantilever 14 transfers the tested piece 6 to the top of the designated location. The negative pressure is turned off and the tested piece falls to the designated location. The cantilever 14 is then controlled to transfer to the top of the tested piece 21, and the next transfer step of the tested piece 6 is prepared.

[0060] Preferably, the pressure change value, temperature change value and position change value tested in the above steps are converted into voltage signals and compared with standard values. When the error is within an acceptable range, the tested component is qualified.

[0061] The specific test results are shown in Tables 1-3 and Figure 5 Table 1 shows the output voltage values ​​of the throttle angle sensor at different angles tested by the sensor testing system and the testing method in this embodiment. The value shows the measured value of the output voltage of the throttle angle sensor at the preset angle. The deviation between the output voltage and the input voltage is within the standard deviation range and is qualified.

[0062] Angle (deg) Input voltage (V) Maximum allowable voltage deviation (±V) Measured voltage (V) Judgment result 1 -20 0.70.1 0.749OK 2 -100 3.9 0.2 3.895OK

[0063] Table 2 shows the maximum value of thermistor voltage change during calibration and testing. This value reflects whether the temperature change inside the sensor during the test is within the normal range. In this embodiment, the temperature change is qualified.

[0064] Voltage standard value (V) Measured voltage value (V) Maximum allowable voltage deviation (±V) Judgment result 13.754 3.6350.200 OK

[0065] Table 3 shows the actual air pressure value and the corrected air pressure value measured by the air pressure sensor in this embodiment. The value shows the actual value of the intake air pressure inside the sensor. The data is qualified if it is within the standard range.

[0066] like Figure 5 The figure shows the change of the output voltage when the input voltage remains stable as the angle of the throttle angle sensor changes within a preset time in this embodiment. As shown in the figure, the output voltage also changes linearly with the angle change, and both are within the qualified range.

[0067] Compared with the prior art, the sensor testing method of the present application is that the industrial computer 16 controls the negative pressure device 5 to simulate the actual working environment of the sensor, generate a continuously changing absolute pressure environment, and the signal collector 9 synchronously collects the pressure change value, temperature change value and position change value in the tested object 6, and completes the detection. In the above process, the detection of temperature, air pressure and position is completed in the same test period, realizing the synchronous sampling of temperature, position and voltage, and improving the accuracy and efficiency of detection.

[0068] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A three-in-one sensor testing system, It is characterized in that include: The test platform is arranged in a cabinet with a closed inner cavity and has a test station for fixing the tested object; A rotating device is provided below the test station, the rotating device comprises a rotating motor, the rotating shaft of the rotating motor passes through the test station and is inserted into the tested object and connected to the throttle angle sensor, and is used to rotate the throttle angle sensor in the tested object from a first preset angle to a second preset angle within a preset time; A negative pressure device, comprising an air pump and a pressure regulating valve, wherein the air pump is communicated with the chassis, the pressure regulating valve is connected to the air pump, and the pressure regulating valve is used to start the air pump to make the air pressure in the chassis reach a preset pressure within the preset time; A signal acquisition device is arranged on the test station, and the signal acquisition device includes a signal collector for electrically connecting with the test piece to collect test signals, wherein the test signals include actual air pressure change signals inside the chassis, temperature change signals inside the test piece, and throttle angle change signals.

2. The three-in-one sensor testing system according to claim 1, It is characterized in that The signal acquisition device is movably arranged relative to the test station.

3. The three-in-one sensor testing system according to claim 2, It is characterized in that The signal acquisition device includes a sliding cylinder, a drive controller and a track. The track is arranged on one side of the test station. The signal collector is arranged on the track. The drive controller is electrically connected to the sliding cylinder. The sliding cylinder drives the signal collector to reciprocate on the track in a direction toward or away from the test piece.

4. The three-in-one sensor testing system according to claim 3, It is characterized in that The rotating device includes a rotation controller electrically connected to the rotating motor.

5. The three-in-one sensor testing system according to any one of claims 1 to 4, It is characterized in that A corner cylinder is also provided on one side of the testing station, and a pressing block is provided at the lower end of the cantilever of the corner cylinder.

6. The three-in-one sensor testing system according to claim 5, It is characterized in that The corner cylinder is also provided with a negative pressure channel, the negative pressure channel is also connected to a pressure device, and the negative pressure channel passes through the pressure block.

7. The three-in-one sensor testing system according to claim 4, It is characterized in that It also includes an automatic control device, which includes an industrial computer and a display. The display, the drive controller, the rotation controller and the pressure regulating valve are electrically connected to the industrial computer respectively.

8. A sensor testing method, It is characterized in that The test is performed using the three-in-one sensor test system as claimed in claim 1, specifically comprising the following steps: The tested object is fixed on the testing station, and the tested object is connected to the rotating device; By rotating the rotating device, the throttle angle sensor in the tested object is rotated to a first preset angle; Electrically connecting a signal acquisition device to the device under test; The negative pressure device is turned on to make the air pressure in the chassis reach a preset pressure within a preset time, and the rotating device is controlled to rotate the throttle angle sensor in the tested piece to a second preset angle within the preset time; The measurement is completed by collecting the output voltage change value and the temperature change value in the tested device within the preset time through the signal collector.

9. The test method according to claim 8, It is characterized in that The output voltage change value and the temperature change value are compared with corresponding standard values. When the error is within an acceptable range, the tested device is qualified.

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