Wheel speed sensor characteristic testing machine, testing method and storage medium thereof

Abstract

The invention relates to the field of sensor equipment, in particular to a wheel speed sensor characteristic testing machine, a testing method and a storage medium thereof, and the wheel speed sensor characteristic testing machine comprises a clamping mechanism which is used for clamping and fixing a sensor; the power supply mechanism is used for supplying power to the sensor on the clamping mechanism and transmitting signal data; the rotating wheel mechanism is used for simulating the rotation of a rotating wheel in the automobile, so that the sensor clamped on the clamping mechanism can be detected; the printing mechanism is used for printing pictures on the sensors which are detected to be qualified; the conveying mechanism is used for placing the sensor on the clamping mechanism and conveying the sensor on the clamping mechanism to the printing mechanism; and the data processing module is used for receiving the signal data detected by the sensor and performing data calculation to obtain a result signal indicating whether the sensor is qualified or not. The method has the effect of low manual detection efficiency.

Description

Technical Field

[0001] The present application relates to the field of sensor equipment, and in particular to a wheel speed sensor characteristic testing machine, a testing method and a storage medium thereof. Background Art

[0002] In modern cars, wheel speed sensors play a vital role. They are mainly used to monitor the rotation speed of the wheels in real time. This information is indispensable for many key vehicle control systems. For example, the anti-lock braking system (ABS), electronic stability program (ESP), traction control system (TCS), etc. all require accurate wheel speed information to optimize the dynamic performance and safety of the vehicle. Especially today when new energy vehicles are becoming more and more popular, digital control and monitoring are particularly important.

[0003] After the wheel speed sensor is produced, it needs to be tested. The gears and wheels in the car are simulated by a rotating wheel, and then the wheel speed sensor is used to detect it. Then, the detected wheel speed signal is compared with the set wheel speed data to determine whether the produced wheel speed sensor is qualified. The efficiency is low. Summary of the invention

[0004] In order to improve the problem of low testing efficiency, the present application provides a wheel speed sensor characteristic testing machine, a testing method and a storage medium thereof.

[0005] The present application provides a wheel speed sensor characteristic tester, which adopts the following technical solution: A wheel speed sensor characteristic testing machine, comprising: A clamping mechanism, used for clamping and fixing the sensor; A power supply mechanism, used to supply power to the sensor on the clamping mechanism and to transmit signal data; A rotating wheel mechanism, used to simulate the rotation of a rotating wheel in a car, so as to be detected by the sensor clamped on the clamping mechanism; A printing mechanism, used for printing pictures on the sensors that have passed the inspection; A transmission mechanism, used for placing the sensor on the clamping mechanism, and for transmitting the sensor on the clamping mechanism to the printing mechanism; The data processing module is used to receive the signal data detected by the sensor, and after performing data calculation, obtain a result signal indicating whether the sensor is qualified.

[0006] By adopting the above technical solution, automatic detection sensors are implemented to automatically determine whether something is qualified and automatically print, which greatly improves the detection efficiency and detection stability, reduces the probability of misjudgment due to manual fatigue, and reduces labor costs.

[0007] Optionally, the clamping mechanism includes a slidably arranged clamping seat and a track driving component for controlling the sliding of the clamping seat, the clamping seat is provided with a socket, the socket is provided with a hole for inserting the sensor, the clamping seat is also slidably arranged with a proximity seat and a proximity driving component for driving the proximity seat to slide, the proximity seat is lifted and lowered with a pressure plate for pressing the sensor on the socket and a pressure driving component for controlling the lifting and lowering displacement of the pressure plate.

[0008] By adopting the above technical solution, the sensor is pressed in different directions by approaching the driving member and pressing the driving member, so that different types of sensors are adapted to detect the rotating wheel from different directions, which greatly expands the adaptation range.

[0009] Optionally, the power supply mechanism includes a power supply end and a power supply drive for pushing the power supply end to insert or remove the sensor, and the power supply end is used to plug into the sensor for power supply and data transmission; the wheel mechanism includes a wheel drive, and the rotating shaft of the wheel drive is used for the wheel to be mounted, and a pressure ring for clamping the wheel and a fixing member for fixing the pressure ring are provided on the rotating shaft of the wheel drive.

[0010] By adopting the above technical solution, the sensor automatically installed on the clamping mechanism is automatically plugged in and powered on through the power supply mechanism, and data transmission is realized, which is convenient and fast.

[0011] Optionally, the printing mechanism includes a printing part for printing a mark on the sensor and a dot-marking seat, the dot-marking seat is provided with a colored pen for marking on the sensor, the dot-marking seat is provided with a dot-marking driving part, a pen cap is provided on the output shaft of the dot-marking driving part, the dot-marking driving part is used to control the closing of the pen cap onto the colored pen, and the dot-marking seat is provided with a dot-marking detection part for detecting whether the dotting is completed.

[0012] By adopting the above technical solution, it is possible to automatically print and dot qualified sensors, so as to facilitate identification in subsequent processes, which is convenient and quick.

[0013] Optionally, the transmission mechanism includes a plurality of transmission driving members, the rotation shafts of the transmission driving members are connected to adjacent transmission driving members, and a clamping head for clamping the sensor is provided on the rotation shaft of the transmission driving member at the end.

[0014] By adopting the above technical solution, control with more angles, a larger range and higher precision can be achieved through multiple transmission drive components, which is convenient, fast and efficient.

[0015] Optionally, the rotating wheel mechanism further includes a standard detection component, which is used to detect the rotating wheel to obtain standard detection data. The data processing module receives the standard detection data to calculate the signal data obtained by the sensor detection to obtain a result signal.

[0016] By adopting the above technical solution, standard test data can be obtained through standard test parts as a comparison with the sensor. At the same time, the probability of the wheel drive part having the same power but a lower output speed affecting the sensor test results is reduced due to increased internal resistance due to long-term use.

[0017] The present application provides a testing method for a wheel speed sensor characteristic testing machine, which adopts the following technical solution: A testing method for a wheel speed sensor characteristic testing machine, comprising: Acquire sensor detection data and wheel data; Determine and output the wheel signal through the wheel data and a preset electric signal conversion threshold; Acquiring the standard test data; Determine standard wheel data through the standard detection data, the wheel data, and a preset error threshold; A result signal is determined by the sensor detection data and the standard wheel data and outputted.

[0018] By adopting the above technical solution, it is possible to automatically determine whether the results of sensor detection are accurate, reduce interference, and be more accurate, convenient and quick.

[0019] Optional, including: Obtain relative motion data and time data; Determine relative acceleration data through the relative motion data and the time speed; Determine and output a wheel stable state signal based on the relative acceleration data and a preset relative acceleration threshold; Determine and output a new wheel signal through the wheel stable state signal, the standard detection data, and the wheel data; determine the unstable number data through the relative acceleration data, the time data, and the relative acceleration threshold; The result signal is determined and outputted according to the instability frequency data and the preset instability alarm threshold.

[0020] By adopting the above technical solution, the interference caused by wheel slippage is reduced and the accuracy is further improved.

[0021] Optional, including: Determine the deceleration data by using the relative acceleration data and a preset protection correction threshold; Determine the new start threshold value through the deceleration data, the wheel signal, and a preset start threshold value, and replace the original start threshold value; Obtaining the relative motion data again until the relative motion data is within the range of the protection correction threshold; Determine the change trend data through the relative motion data and the time data; The loosening signal is determined and outputted through the change trend data and a preset mutation threshold.

[0022] By adopting the above technical solution, correction is performed automatically, the probability of slipping is reduced by reducing the speed, and accuracy is improved.

[0023] The present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and executes a test method of a wheel speed sensor characteristic tester.

[0024] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Automatic detection of sensors, automatic judgment of whether the product is qualified, and automatic printing, greatly improving the detection efficiency, improving the stability of detection, and reducing labor costs; 2. Greatly expanded the scope of adaptation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a wheel speed sensor characteristic testing machine in Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram highlighting another perspective of the wheel mechanism.

[0028] Figure 3 It is a module schematic diagram of a wheel speed sensor characteristic testing machine in Example 1 of the present application.

[0029] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0030] Figure 5 It is a module schematic diagram of a wheel speed sensor characteristic testing machine in Example 2 of the present application.

[0031] Figure 6 It is a flow chart of a testing method of a wheel speed sensor characteristic testing machine in an embodiment of the present application.

[0032] Figure 7 is a flow chart of step S2.

[0033] Figure 8 It is a flowchart of step S3.

[0034] Explanation of the accompanying drawings: 1. Clamping mechanism; 11. Clamping seat; 111. Socket; 112. Socket; 12. Track drive; 13. Approach seat; 131. Approach drive; 14. Pressure plate; 141. Pressing drive; 2. Power supply mechanism; 21. Power supply end; 22. Power supply drive; 23. Handheld swivel; 3. Rotary wheel mechanism; 31. Rotary wheel drive; 32. Pressure ring; 33. Fixing member; 34. Standard detection member; 4. Printing mechanism; 41. Printing member; 42. Dotting seat; 43. Colored pen; 44. Dotting drive; 45. Pen cap; 46. Dotting detection member; 5. Transmission mechanism; 51. Transmission drive; 52. Clamping head; 6. Data processing module. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] Embodiment 1 of the present application discloses a wheel speed sensor characteristic testing machine. Figure 1 and Figure 2 and Figure 3 The wheel speed sensor characteristic tester includes a clamping mechanism 1, a power supply mechanism 2, a wheel mechanism 3, a printing mechanism 4, a transmission mechanism 5, and a data processing module 6. The transmission mechanism 5 is used to clamp the sensor and load it onto the clamping mechanism 1. The power supply mechanism 2 is electrically connected to the sensor on the clamping mechanism 1. The power supply mechanism 2 is used to power the sensor and transmit signal data. The wheel that needs to be simulated is placed on the wheel mechanism 3 for rotation. The sensor clamped on the clamping mechanism 1 is aligned with the rotating wheel on the wheel mechanism 3 to detect the wheel speed. The detected signal data is output to the data processing module 6 through the power supply mechanism 2. After the data processing module 6 calculates and processes to indicate that it is qualified, the transmission mechanism 5 clamps the sensor on the clamping mechanism 1 to the printing mechanism 4, and prints the logo and a green dot indicating that it is qualified on the sensor.

[0037] Reference Figure 1 and Figure 2The clamping mechanism 1 includes a sliding clamping seat 11 and a track driving member 12 for controlling the sliding of the clamping seat 11. The track driving member 12 includes a track and a cylinder or a motor. The clamping seat 11 is clamped on the side of the track and slides along the length direction. The telescopic rod of the cylinder is the telescopic rod of the track driving member 12. The telescopic rod of the track driving member 12 is telescopic along the length direction of the track, and the end of the telescopic rod of the track driving member 12 is connected to the side wall of the clamping seat 11, or a screw rod is embedded in the track. The motor drives the screw rod to rotate, and the clamping seat 11 is rotatably connected to the screw rod. A socket 111 is fixedly connected to the clamping seat 11 by bolts. In this embodiment, the socket 111 can have two styles, one is that the lower end is fixed to the clamping seat 11 and then extends vertically upward, and the other is that the lower end is fixed to the clamping seat 11 and then extends in parallel after being bent 90°. Both types of sockets 111 are provided with a socket 112 for inserting a sensor at a position away from the clamping seat 11. The socket 112 is adapted to the end of the wheel speed sensor for insertion. At this time, the sensor is clamped to achieve rotation limit. A close seat 13 and a close driving member 131 for driving the close seat 13 to slide are also slidably provided on the clamping seat 11. The close driving member 131 controls the close seat 13 to slide toward or away from the clamping seat 11. The close driving member 131 adopts a cylinder. A clamping driving member 141 is fixedly connected to the close seat 13. The clamping driving member 141 adopts a cylinder. The telescopic rod of the clamping driving member 141 rises and falls along the direction of gravity. A pressing plate 14 for clamping the sensor on the socket 111 is fixedly connected to the telescopic rod of the clamping driving member 141. If the socket 111 is vertically extended, the pressing plate 14 is pressed against the sensor through the close driving member 131. If the socket 111 is parallelly extended, the pressing plate 14 is pressed from top to bottom on the sensor through the clamping driving member 141.

[0038] Reference Figure 2The power supply mechanism 2 includes a power supply end 21 and a power supply driver 22 for pushing the power supply end 21 to insert or remove the sensor. The power supply driver 22 can be a cylinder. The power supply end 21 is fixedly connected to the end of the telescopic rod of the power supply driver 22. The telescopic rod of the power supply driver 22 is telescoped toward or away from the socket 112. The power supply end 21 includes an end for power supply, an end for signal data transmission, and an adaptive wire. The power supply end 21 is used to plug in the sensor for power supply and data transmission. The power supply mechanism 2 also includes at least three hand-held swivels 23, and the ends of the three hand-held swivels 23 are all rotatably connected, that is, the first hand-held swivel 23 is first rotatably connected to the bottom surface, and then the second hand-held swivel 23 is rotatably connected to the first hand-held swivel 23, and the third hand-held swivel 23 is rotatably connected to the second hand-held swivel 23, and the power supply drive 22 is fixedly connected to the end of the third hand-held swivel 23 away from the second hand-held swivel 23, and the extension directions of the three hand-held swivels 23 are staggered, for example, the angle between the extension direction of the first hand-held swivel 23 and the extension direction of the second hand-held swivel 23 is 30°, and the angle between the extension direction of the second hand-held swivel 23 and the extension direction of the third hand-held swivel 23 is 30°. The rotation force between the hand-held swivels 23 is controlled by tightening the bolts, that is, the looser the bolts are, the easier it is for the hand-held swivel 23 to rotate, and the tighter the bolts are, the more fixed the hand-held swivel 23 is.

[0039] Reference Figure 2 The wheel mechanism 3 includes a wheel driving member 31, which can be a motor. The wheel to be simulated is sleeved on the rotating shaft of the wheel driving member 31, and the simulation is performed by rotating the wheel driving member 31. A pressure ring 32 for clamping the wheel is fixedly connected to the rotating shaft of the wheel driving member 31. The rotating shaft of the wheel driving member 31 is also provided with a thread, and a fixing member 33 for fixing the pressure ring 32 is screwed on the thread.

[0040] Reference Figure 1 and Figure 2 and Figure 4The printing mechanism 4 includes a printing piece 41 for printing a logo on the sensor and a dot-marking seat 42. The printing piece 41 can be made of a printing press. The transmission mechanism 5 clamps the sensor in the jack 112 into the printing piece 41 to print the logo. A colored pen 43 for dotting the sensor is installed on the dot-marking seat 42. The colored pen 43 can be clamped and replaced by clamping or interference fit. A dot-marking drive member 44 is fixedly connected to the dot-marking seat 42. The dot-marking drive member 44 can be a rotary cylinder or other driving source with both rotation and telescopic functions. A pen cap 45 is fixedly connected to the output shaft of the dot-marking drive member 44. The dot-marking drive member 44 is used to control the cap 45 to cover the pen tip of the colored pen 43. The transmission mechanism 5 clamps the sensor from the printing piece 41 to the colored pen 43, and touches the colored pen 43 to achieve dotting. A dotting detection member 46 for detecting whether the dotting is completed is fixedly connected to the dotting seat 42. The dotting detection member 46 can be implemented by an image recognition camera or other sensors with image recognition function.

[0041] Reference Figure 1 The transmission mechanism 5 includes a plurality of transmission drive members 51, which can be motors. The first transmission drive member 51 is fixed on the bottom surface as a basis, and the second transmission drive member 51 is connected to the rotating shaft of the first transmission drive member 51. The remaining transmission drive members 51 are connected in the same way. The more transmission drive members 51 there are, the higher the control accuracy, the wider the controllable range, and the higher the difficulty of operation. The last transmission drive member 51 at the end is fixedly connected to the rotating shaft with a clamping head 52 for clamping the sensor, and the clamping head 52 can be a clamping cylinder. If the sensor is unqualified, the transmission mechanism 5 clamps the sensor on the clamping mechanism 1 and places it at the specified position.

[0042] The data processing module 6 includes a processor and a database. The database is used to store various threshold data, such as error threshold, relative motion threshold, protection correction threshold, startup threshold, mutation threshold, etc. The processor is used to receive the sensor detection data detected by the sensor, and call the corresponding threshold data from the database to obtain the result signal output after calculation.

[0043] The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0044] The implementation principle of the wheel speed sensor characteristic tester of the embodiment of the present application is as follows: the sensor is clamped by the clamping head 52, and then the sensor is moved and placed in the socket 112 by the transmission driving member 51, and then the sensor is pressed on the socket 111 by controlling the pressing plate 14 through the approaching driving member 131 and the pressing driving member 141, and then the telescopic rod of the power supply driving member 22 is extended to plug the power supply end 21 into the sensor, and then the rotating wheel driving member 31 is controlled to drive the rotating wheel to rotate, and the sensor is aligned with the rotating wheel for detection to obtain the sensor. The detection signal is judged by the data processing module 6 whether it is qualified. If it is qualified, the pressure plate 14 is moved away by approaching the driving member 131 and the pressing driving member 141, and then the sensor on the socket 111 is clamped by the clamping head 52, and moved to the printing member 41 to print the logo, and then the telescopic rod of the dotting driving member 44 is extended and rotated to open the pen cap 45 from the colored pen 43, and the clamping head 52 drives the sensor to move to the colored pen 43 for dotting, and finally the pen cap 45 is put back on the colored pen 43.

[0045] Embodiment 2: Different from Example 1, Figure 2 and Figure 5 Embodiment 2 of the present application discloses a wheel speed sensor characteristic testing machine, including: the wheel mechanism 3 also includes a standard detection component 34, the standard detection component 34 includes a wheel speed sensor as a standard and a sensor for detecting angular velocity or motion speed, the standard detection component 34 is installed outside the wheel to detect and obtain standard detection data, the standard detection component 34 is also embedded in the rotating shaft of the wheel driving component 31, and is located in the inner ring of the wheel, and detects relative motion data toward the inner ring of the wheel, and the data processing module 6 receives the standard detection data and the relative motion data to calculate the signal data obtained by the sensor detection to obtain a result signal.

[0046] The present application embodiment discloses a testing method of a wheel speed sensor characteristic testing machine. Figure 6The testing method of the wheel speed sensor characteristic testing machine includes the following steps: S1, obtain sensor detection data and wheel data; S11, determining the wheel signal through the wheel data and the preset electrical signal conversion threshold and outputting it; S12, obtaining standard test data; S13, determining standard wheel data through standard detection data, wheel data, and a preset error threshold; S14, determining the result signal through the sensing detection data and the standard wheel data and outputting it.

[0047] In detail: the sensing detection data is obtained by the sensor tested on the socket 111, the wheel data is the data set by the user for testing, that is, the theoretical rotation speed of the wheel drive 31, the electrical signal conversion threshold is the conversion formula for converting the wheel data input by the user into the corresponding signal for controlling the wheel drive 31, the standard detection data is the wheel speed data obtained by detecting the wheel by the standard detection component 34 installed outside the wheel, and then the wheel data is compared with the standard detection data. For example, if the wheel data is 10 revolutions / second, if the standard detection data is 9.8 revolutions / second, the error threshold is ±5%, and the current standard detection data error is (10-9.8) / 10=2%<5%, which is within the allowable error range, then the standard wheel data is 9.8, and then the sensing detection data obtained by detection is compared with the standard wheel data to determine whether the sensor is qualified.

[0048] Reference Figure 7 , further comprising the following steps: S2, obtaining relative motion data and time data; S21, determining relative acceleration data through the relative motion data and the time speed; S22, determining a wheel stable state signal through relative acceleration data and a preset relative acceleration threshold and outputting the signal; S23, determining a new wheel signal through the wheel stable state signal, standard detection data, and wheel data and outputting it; S24, determining the number of unstable times data through the relative acceleration data, the time data, and the relative acceleration threshold; S25, determining a result signal based on the instability frequency data and a preset instability alarm threshold and outputting the result signal.

[0049] In detail: the relative motion data is detected by the standard detection part 34 in the rotating wheel. The relative motion data indicates the relative rotation speed between the rotating wheel and the rotating shaft of the rotating wheel driving part 31. If the relative motion data is greater than zero, it means that the rotating wheel and the rotating shaft of the rotating wheel driving part 31 have rotated relative to each other, indicating that the rotating wheel has slipped, but the small slip has little effect and can be corrected by calculation; if the relative motion data of the first second is 0.01 revolutions / second, the relative motion data of the second second is 0.02 revolutions / second, and the relative motion data of the third second is 0.03 revolutions / second, then the relative acceleration data can be obtained as 0.01 revolutions / second. 2 , set the relative acceleration threshold to 0.01 rpm / s 2 , it means it is still within the allowable range, and the output is a stable state signal indicating that the wheel is stable. If the relative acceleration data is 0.02 turns / s 2 >0.01 revolution / s 2 , then the output indicates that the wheel is unstable and the wheel stable state signal is output. The acceleration error is usually when the wheel drive 31 is just started. When the wheel is at a constant speed, the acceleration is usually 0, and there is a stable difference in speed; if the standard test data is 6 laps / s, the wheel data is 10 laps / s, if the relative acceleration data is 0.01 lap / s 2 , indicating that it is still in the acceleration process, at this time the wheel is -0.01 revolutions / s relative to the rotating shaft of the wheel drive member 31 2 The output increases by 0.01 turns / s. 2 The new wheel signal after the new wheel signal only increases by 0.01 revolutions / s 2 The acceleration is not increased, but the maximum speed is increased. For example, the original wheel signal is 5 revolutions / s 2 The acceleration is accelerated to 10 revolutions per second, and the new rotor signal is 5.01 revolutions per second 2 The acceleration is accelerated to 10 rpm; if the relative acceleration data at the second second is 0 rpm 2 , the relative acceleration data at the 3rd second is 0.1 rpm / s 2 , the relative acceleration data at the 4th second is 0 rpm / s 2 , the relative acceleration data at the 5th second is 0.5 rpm / s 2 , set the relative acceleration threshold to 0.01 lap / s 2 At this time, the unstable number data is 2. If the unstable alarm threshold is 1, a result signal indicating an alarm of unstable operation of the wheel is output to the user, which is usually caused by loosening of the fixing member 33.

[0050] Reference Figure 8 , further comprising the following steps: S3, determining the deceleration data through the relative acceleration data and the preset protection correction threshold; S31, determining a new start threshold value through the deceleration data, the wheel signal, and the preset start threshold value, and replacing the original start threshold value; S32, obtaining relative motion data again until the relative motion data is within the range of the protection correction threshold; S33, determining the change trend data through the relative motion data; S34, determining and outputting a loosening signal through the change trend data and a preset mutation threshold.

[0051] Detailed: Assume the protection correction threshold is ([0.01,0.2], -0.01), and perform correction when the relative acceleration data falls within the range of the protection correction threshold. If the relative acceleration data is 0.02 revolutions / s 2 , then the output represents -0.01 revolutions / s 2 If the preset start threshold is 5 revolutions / s 2 , then we get 4.9 revolutions / s 2 The starting threshold of the heart is then converted to obtain the corresponding wheel signal to adjust the rotation speed of the wheel drive 31, and steps S3 and S31 are repeated continuously until the relative acceleration data is less than the protection correction threshold, which meets step S2; the change trend data is the relative motion data as the y-axis, and the time data as the x-axis, and an xy curve is drawn. At this time, the relative acceleration data is the inclination angle of the xy curve, and the mutation threshold is the highest y-axis data that limits the xy curve and the maximum inclination angle of the xy curve. If the mutation threshold is exceeded, it means that the fixing part 33 is loose or the thread on the rotating shaft of the wheel drive 31 is worn.

[0052] The present application embodiment discloses a computer-readable storage medium. Figure 1 The computer-readable storage medium stores a computer program that can be loaded by a processor and executes a test method of a wheel speed sensor characteristic test machine.

[0053] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wheel speed sensor characteristic tester, characterized in that: include: A clamping mechanism (1), used for clamping and fixing the sensor; A power supply mechanism (2) used to supply power to the sensor on the clamping mechanism (1) and to transmit signal data; A rotating wheel mechanism (3) for simulating the rotation of a rotating wheel in a car, so as to be detected by a sensor clamped on the clamping mechanism (1); A printing mechanism (4) is used to print pictures on the sensors that have passed the detection; A transmission mechanism (5), used for placing a sensor on the clamping mechanism (1), and for transmitting the sensor on the clamping mechanism (1) to the printing mechanism (4); The data processing module (6) is used to receive signal data detected by the sensor and perform data calculation to obtain a result signal indicating whether the sensor is qualified.

2. A wheel speed sensor characteristic tester according to claim 1, characterized in that: The clamping mechanism (1) comprises a slidably arranged clamping seat (11) and a track driving member (12) for controlling the sliding of the clamping seat (11); a socket (111) is arranged on the clamping seat (11); a plug hole (112) for inserting a sensor is provided on the socket (111); a proximity seat (13) is slidably arranged on the clamping seat (11) and a proximity driving member (131) for driving the proximity seat (13) to slide; a pressing plate (14) for pressing the sensor on the socket (111) and a pressing driving member (141) for controlling the lifting and lowering displacement of the pressing plate (14) are arranged on the proximity seat (13).

3. A wheel speed sensor characteristic tester according to claim 1, characterized in that: The power supply mechanism (2) comprises a power supply end (21) and a power supply driving member (22) for pushing the power supply end (21) to be inserted into or removed from a sensor, the power supply end (21) being used to be plugged into the sensor for power supply and data transmission; the rotating wheel mechanism (3) comprises a rotating wheel driving member (31), the rotating shaft of the rotating wheel driving member (31) being used for the rotating wheel to be sleeved, the rotating shaft of the rotating wheel driving member (31) being provided with a pressure ring (32) for clamping the rotating wheel, and a fixing member (33) for fixing the pressure ring (32).

4. A wheel speed sensor characteristic tester according to claim 1, characterized in that: The printing mechanism (4) comprises a printing element (41) for printing a mark on a sensor and a dot-marking seat (42); a colored pen (43) for marking dots on the sensor is arranged on the dot-marking seat (42); a dot-marking driving element (44) is arranged on the dot-marking seat (42); a pen cap (45) is arranged on the output shaft of the dot-marking driving element (44); the dot-marking driving element (44) is used to control the cap (45) to cover the colored pen (43); and a dot-marking detecting element (46) for detecting whether dotting is completed is arranged on the dot-marking seat (42).

5. The wheel speed sensor characteristic tester according to claim 1, characterized in that: The transmission mechanism (5) comprises a plurality of transmission drive members (51), wherein the rotation shafts of the transmission drive members (51) are connected to adjacent transmission drive members (51), and a clamping head (52) for clamping a sensor is arranged on the rotation shaft of the transmission drive member (51) at the end.

6. A wheel speed sensor characteristic tester according to claim 3, characterized in that: The rotating wheel mechanism (3) further comprises a standard detection component (34), wherein the standard detection component (34) is used to detect the rotating wheel to obtain standard detection data, and the data processing module (6) receives the standard detection data to calculate the signal data obtained by the sensor detection to obtain a result signal.

7. A method for testing a wheel speed sensor characteristic tester, using the wheel speed sensor characteristic tester according to claim 1, characterized in that: include: Acquire sensor detection data and wheel data; Determine and output the wheel signal through the wheel data and a preset electric signal conversion threshold; Acquiring the standard test data; Determine standard wheel data through the standard detection data, the wheel data, and a preset error threshold; A result signal is determined by the sensor detection data and the standard wheel data and outputted.

8. The testing method of a wheel speed sensor characteristic testing machine according to claim 7, characterized in that: include: Obtain relative motion data and time data; Determine relative acceleration data through the relative motion data and the time speed; Determine and output a wheel stable state signal based on the relative acceleration data and a preset relative acceleration threshold; Determine and output a new wheel signal through the wheel stable state signal, the standard detection data and the wheel data; Determine the unstable number data by using the relative acceleration data, the time data, and the relative acceleration threshold; The result signal is determined and outputted according to the instability frequency data and the preset instability alarm threshold.

9. The testing method of a wheel speed sensor characteristic testing machine according to claim 8, characterized in that: include: Determine the deceleration data by using the relative acceleration data and a preset protection correction threshold; Determine the new start threshold value through the deceleration data, the wheel signal, and a preset start threshold value, and replace the original start threshold value; Obtaining the relative motion data again until the relative motion data is within the range of the protection correction threshold; Determine the change trend data through the relative motion data and the time data; The loosening signal is determined and outputted through the change trend data and a preset mutation threshold.

10. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and executes the testing method of the wheel speed sensor characteristic testing machine according to any one of claims 7 to 9.

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