Centrifugal acceleration sensor detection equipment and detection method thereof

Abstract

The invention discloses centrifugal acceleration sensor detection equipment and a detection method thereof. The detection equipment comprises a rack, a middle platform and a rotating platform, the rotating platform is provided with a motor driving mechanism, and a plurality of jigs are distributed on the rotating platform; a signal adapter configured on the jig is connected with an electric slip ring through a wire harness, and the electric slip ring transmits a signal to an industrial control system; the industrial control system controls the working conditions of the rotary base and the side pushing mechanism. A plurality of jigs are distributed on the rotating platform, a plurality of to-be-detected sensors can be fixed through profiling grooves of the jigs, signals collected by the to-be-detected sensors can be finally sent to an industrial control system through an electric slip ring, and the industrial control system can automatically match a detection model according to the types of the to-be-detected sensors. The automatic detection process from fixing the to-be-detected sensor to outputting the detection result can be completed according to the operation instruction.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor detection, and particularly relates to a centrifugal acceleration sensor detection device and a detection method thereof. Background Art

[0002] With the development of the automotive industry, the vibration generated during vehicle driving has become a major obstacle restricting the development of automobiles. The vibration generated during vehicle driving will seriously reduce the comfort, stability, and safety of the vehicle, reducing the enjoyment of people when riding in the vehicle, and also greatly shortening the service life of vehicle components. As the main sensor for measuring vehicle vibration and longitudinal acceleration, the acceleration sensor is becoming increasingly important. Therefore, the off-line detection of the acceleration sensor requires the detection of the accuracy of its acceleration.

[0003] In the prior art, there are already corresponding detection devices for detecting sensors. For example, Document 1: CN 116859085A discloses a detection device for an acceleration sensor, including: a test board for fixing the sensor body; a moving mechanism connected to the test board for moving the test board; and a test instrument mounted on the test board, which can be signal-connected to the sensor body for displaying the test parameters of the sensor body. In the present invention, the user installs the acceleration sensor on the test instrument. When detecting the acceleration sensor, the user controls the driving mechanism to drive the lifting mechanism to move horizontally, so that the lifting mechanism drives the test board to move along a preset sliding track. The test board drives the test instrument and the acceleration sensor to move with a preset acceleration, causing the acceleration sensor to display the test parameters. Then, the user reads the test parameters of the acceleration sensor.

[0004] The above detection device generates an acceleration in the horizontal direction through the moving mechanism, and then compares the preset acceleration of the test board with the test parameters displayed by the acceleration sensor, so as to obtain the detection result of the sensor. However, the above detection device has the following defects: (1) The horizontally moving test board and the sliding track need to be arranged very long. If the sliding track is short, the detectable acceleration range will be limited. If the sliding track is long, it will greatly increase the size and layout difficulty of the device. (2) During the horizontal movement, it is difficult for the system to accurately control the acceleration of the test board in the horizontal direction at a stable detection point, and more torque transmission is also likely to cause errors.

[0005] Document 2: CN201910992870.4 discloses an acceleration sensor testing device and a testing method, including a host computer, a servo motor, an induction generator, a circuit unit and a turntable; the output shaft of the servo motor is connected to the induction generator, the turntable is installed on the output shaft of the servo motor, the circuit unit is embedded in the turntable, the acceleration sensor to be tested is installed on the circuit unit, and a weighted acceleration sensor and a screw hole array are arranged on the turntable; the circuit unit includes a wireless power module and a wireless data sending module, the wireless power module is used to wirelessly receive the electric energy of the induction generator and supply it to the acceleration sensor to be tested and the wireless data sending module; an encoder is arranged on the output shaft of the servo motor; the acceleration sensor to be tested is connected to the host computer through the wireless data sending module, and the host computer obtains the test accuracy according to the deviation between the acceleration signal and the rotation speed signal output by the encoder. The above solution has the advantages of simple structure, high test reliability and accuracy, etc.

[0006] Document 2 is a device and method for detection by means of the rotation of a turntable. However, the detection device in Document 2 needs to be provided with a screw hole array, a weighted acceleration sensor and bolts for weighting; the reason is that an induction generator and a circuit unit need to be arranged on the turntable in Document 2, and the installation of these two devices on the turntable will make one side of the turntable heavier, resulting in uneven weight distribution of the turntable. Therefore, a weighting structure needs to be set up to reduce the impact. Secondly, the device in Document 2 is only suitable for detecting one sensor at a time and is not suitable for detecting multiple sensors simultaneously. Moreover, during the movement of a vehicle, although it is moving forward or in a positive direction most of the time, it will move backward or in a reverse direction when reversing. Therefore, in fact, the acceleration values collected by the acceleration sensor on the vehicle include positive acceleration values and negative acceleration values. The sensor to be tested in the device of Document 2 cannot be reversed after installation, and only the comparison between the sensor collection value and the detection value in one direction can be obtained, and the reverse or negative acceleration value cannot be obtained. The signals in Document 2 are sent wirelessly, and this method is prone to delay or interference, resulting in errors in the actual acceleration values obtained and reducing the actual detection accuracy. The degree of automation of Document 2 is relatively low, and it is impossible to realize the installation of the sensor to be tested and the automatic and rapid detection according to different types of sensors to be tested. Summary of the Invention

[0007] The object of the present invention is to provide a centrifugal acceleration sensor detection device and its detection method.

[0008] The present invention needs to solve at least the following technical problems: (1) It can automatically detect multiple acceleration sensors simultaneously; (2) Simplify the structure and omit the weighting structure; (3) It can realize the automatic and rapid detection of different types of sensors to be tested.

[0009] To achieve the above object, the present invention provides a centrifugal acceleration sensor detection device, which includes a frame, an intermediate platform installed in the frame, and a rotating platform installed on the intermediate platform; The rotating platform is configured with a motor drive mechanism, which drives the rotating platform to rotate through the motor drive mechanism. A plurality of fixtures are distributed on the rotating platform; The fixture includes a rotary base and a profiling seat fixedly installed on the rotary base; a profiling groove for accommodating the sensor to be detected is formed on the profiling seat, and a side push mechanism for fixing the sensor to be detected is arranged on the side of the profiling groove; the side push mechanism includes a side pusher and a side push pressing plate connected to the telescopic rod of the side pusher; a signal adapter is arranged on the profiling seat, and the signal adapters configured for all fixtures are connected to the electric slip ring through a wire harness, and the electric slip ring transmits the signal to the industrial control system; The industrial control system controls the motor drive mechanism on the rotating platform through the servo driver, and the industrial control system controls the working conditions of the rotary base and the side push mechanism.

[0010] In a preferred embodiment of the present invention, the frame includes a bottom frame and an outer cover. The intermediate platform is installed on the bottom frame, and the outer cover is buckled on the upper part of the bottom frame to enclose the rotating platform inside. An annular cover is arranged between the rotating platform and the intermediate platform; electrical interfaces and a plurality of side doors are arranged on the bottom frame, and the electrical interfaces are used to connect with external electrical devices.

[0011] In a preferred embodiment of the present invention, 4-8 fixtures are evenly distributed on the rotating platform, and each fixture is fixed on the rotating platform through a fixture mounting block and bolts.

[0012] In a preferred embodiment of the present invention, the side pusher is a side push cylinder or a side push electric cylinder. The side push pressing plate enters the profiling groove after passing through the side groove of the profiling seat, and the side push pressing plate presses the sensor to be detected under the drive of the side pusher; the rotary base is a rotary cylinder or a numerically controlled rotary table.

[0013] In a preferred embodiment of the present invention, the side pusher is a side push cylinder and the rotary base is a rotary cylinder; a compressed air source is configured on the rotating platform, and each fixture is provided with a tracheal joint and a solenoid valve group connected to the compressed air source, and is connected to the side push cylinder and the rotary cylinder through the tracheal joint, and the working conditions of the cylinders are controlled through the solenoid valve group.

[0014] In a preferred embodiment of the present invention, the sensor to be detected is connected to the electric slip ring through the signal adapter, the electric slip ring is connected to the CDC continuous damping controller, the CDC continuous damping controller sends the signal to the CAN module, and the CAN module sends the received signal to the central control system.

[0015] In a preferred embodiment of the present invention, operation buttons are provided on the frame. The operation buttons are connected to the industrial control system. Each fixture is provided with a position code, and the industrial control system is configured with a barcode scanner to scan the position codes on each fixture.

[0016] The present invention discloses a detection method for detecting an acceleration sensor, comprising the following steps: Step S1: Pre-store the detection models corresponding to each sensor to be detected in the industrial control system, determine the type of the sensor to be detected, and the industrial control system automatically matches the detection model that matches the type of the sensor to be detected according to the type of the sensor to be detected; Step S2: Each sensor to be detected is provided with an identity code, and each fixture is provided with a position code. Use a barcode scanner to scan the identity code on the sensor to be detected and the position code of the corresponding fixture, and the industrial control system associates the fixture position with the sensor to be detected; Step S3: Place all the sensors to be detected into the profiling grooves in the corresponding fixtures respectively. The industrial control system controls the side push mechanism to fix the sensors to be detected in the profiling grooves according to the received detection start instruction, and make the sensors to be detected connected to the signal adapter; Step S4: Judge whether all the sensors to be detected are connected to the signal adapter, and after being connected, the industrial control system retrieves the detection model and determines the rotation speed of the rotating platform at each detection node from the detection model; then the industrial control system starts the rotation of the rotating platform for the first detection; After the first detection is completed, the industrial control system controls the rotating platform to stop running, controls the rotary base to rotate 180°, and then starts the rotation of the rotating platform for the second detection; Step S5: During the rotation of the rotating platform, at each detection node, the data collected from the sensors to be detected is transmitted to the industrial control system through the wire harness and the electric slip ring through the signal adapter, and the acceleration acquisition value Gn of each sensor to be detected is obtained; compare the acceleration acquisition value Gn with the acceleration calculation value Gm calculated by the currently matched detection model to obtain the difference Gx; Step S6: Judge whether the difference Gx exceeds the threshold value to obtain the detection result of the sensor to be detected.

[0017] Preferably, the types of the sensors to be detected include wheel acceleration sensors and vehicle body acceleration sensors; the identity codes of the sensors to be detected and the position codes of the fixtures are barcodes or two-dimensional codes.

[0018] Preferably, during the first detection or the second detection, the rotation speed of the rotating platform controlled by the industrial control system gradually increases to the maximum rotation speed with the detection time, and a data acquisition is performed when the preset rotation speed node is reached; the maximum rotation speed during the detection process is 250 rpm.

[0019] In summary, the present invention has the following advantages: Multiple fixtures are distributed on the rotating platform of the present invention. Multiple sensors to be detected can be fixed through the profiling grooves of the fixtures. The signals collected by the sensors to be detected can be finally sent to the industrial control system through the electric slip ring. The industrial control system can automatically match the detection model according to the type of the sensors to be detected and complete the automatic detection process from fixing the sensors to be detected to outputting the detection results according to the operation instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of an acceleration sensor detection device in an embodiment of the present invention; Figure 2 Schematic diagram of an acceleration sensor detection device in an embodiment of the present invention, with the outer cover part omitted; Figure 3 Schematic diagram of the rotating platform and the annular cover in an embodiment of the present invention; Figure 4 Schematic diagram of the installation of the intermediate platform, the rotating platform and the fixtures in an embodiment of the present invention; Figure 5 Schematic diagram of the installation distribution of multiple fixtures in an embodiment of the present invention; Figure 6 Schematic diagram of a fixture in an embodiment of the present invention; Figure 7 Flowchart of a detection method in an embodiment of the present invention; Figure 8 Schematic diagram of the external shape of a vehicle body acceleration sensor.

[0021] Wherein, 1, bottom frame; 2, outer cover; 3, intermediate platform; 4, rotating platform; 5, fixture; 51, slewing base; 52, profiling seat; 53, profiling groove; 54, side pusher; 55, side push pressing plate; 56, signal adapter; 57, mounting block; 58, side groove; 6, annular cover; 7, electrical interface; 8, side door; 9, sensor to be detected; 10, air pipe joint; 11, operation button; 12, motor drive mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Reference Figure 1 and Figure 2, the present invention provides a centrifugal acceleration sensor detection device, which includes a frame, an intermediate platform 3 installed inside the frame, and a rotating platform 4 installed on the intermediate platform 3. A large hole is provided at the center of the intermediate platform 3, and the rotating platform 4 is arranged above this large hole. The large hole facilitates the connection between the rotating shaft of the motor drive mechanism 12 and the rotating platform 4. The frame is a structure that encloses the detection device inside. Generally, the frame adopts a plate frame structure, provided with beam-column structures, etc., which can facilitate the installation of the device and provide good stability. The frame of the present invention can include a bottom frame 1 and an outer cover 2. The intermediate platform 3 is installed on the bottom frame 1. Installation partitions can be provided on the bottom frame 1, and the intermediate platform 3 can be placed on the installation partitions. The outer cover 2 is buckled on the upper part of the bottom frame 1 to enclose the rotating platform 4 inside. An annular cover is arranged between the rotating platform 4 and the intermediate platform 3. The annular cover 6 can conduct secondary enclosure for the internal electrical equipment. Electrical interfaces 7 and several side doors 8 are arranged on the bottom frame 1. The electrical interfaces 7 are used to connect with external electrical equipment. For example, it is convenient to connect with an external power supply unit to introduce power. The side doors are beneficial for observing the inside after being opened and are also convenient for maintenance.

[0023] Reference Figure 2 , Figure 3 and Figure 4 , the rotating platform 4 is configured with a motor drive mechanism, and the motor drive mechanism is configured with a servo driver. The present invention drives the rotating platform 4 to perform a rotational movement through the motor drive mechanism. Several fixtures are distributed on the rotating platform 4. Preferably, 4 - 8 fixtures are evenly distributed on the rotating platform 4. More preferably, 6 or 8 fixtures are distributed. Each fixture is fixed on the rotating platform 4 through a fixture mounting block 57 and bolts. The fixtures can fix various types of sensors to be detected 9 on the rotating platform 4. The present invention is provided with multiple fixtures, and the multiple fixtures are evenly distributed, which is beneficial for the center of gravity of the entire rotating platform 4 to still be located at the center of the circle or very close to the center of the circle.

[0024] Reference Figure 5 and Figure 6, the fixture 5 includes a rotary base 51 and a profiling seat 52 fixedly installed on the rotary base 51. The rotary base 51 is designed to enable a 180° rotation. It can perform a forward detection before the rotary base 51 rotates and a reverse detection after rotating 180°. A profiling groove 53 for accommodating the sensor to be detected is provided on the profiling seat 52. The profiling groove 53 is a structure capable of accommodating the sensor to be detected. A side-pushing mechanism for fixing the sensor to be detected is arranged on the side of the profiling groove 53. The side-pushing mechanism includes a side-pusher 54 and a side-pushing pressure plate 55 connected to the telescopic rod of the side-pusher 54. After the sensor to be detected is placed in the profiling groove 53, the side-pusher 54 is extended or retracted to press the sensor to be detected towards the signal converter to connect with the signal adapter. A signal adapter is provided on the profiling seat 52. The signal adapters configured for all fixtures are connected to the electric slip ring through wire harnesses, and the electric slip ring transmits the signals to the industrial control system. Thus, while the rotating platform 4 is rotating, the data of each sensor to be detected can still be transmitted to the industrial control system.

[0025] The industrial control system controls the motor drive mechanism on the rotating platform 4 through the servo driver, and the industrial control system controls the working conditions of the rotary base 51 and the side-pushing mechanism.

[0026] In a preferred embodiment of the present invention, the side-pusher 54 is a side-pushing cylinder or a side-pushing electric cylinder. The side-pushing pressure plate 55 enters the profiling groove 53 after passing through the side groove 58 of the profiling seat 52, and the side-pushing pressure plate 55 presses the sensor to be detected under the drive of the side-pusher 54; the rotary base 51 is a rotary cylinder or a numerically controlled rotary table.

[0027] In a preferred embodiment of the present invention, the side-pusher 54 is a side-pushing cylinder, and the rotary base 51 is a rotary cylinder; a compressed air source is configured on the rotating platform 4, and each fixture is equipped with an air pipe joint 10 and a solenoid valve group connected to the compressed air source. The side-pushing cylinder and the rotary cylinder are connected through the air pipe joint 10, and the working conditions of the cylinders are controlled through the solenoid valve group.

[0028] In a preferred embodiment of the present invention, the sensor to be detected is connected to the electric slip ring through the signal adapter. The electric slip ring is connected to the CDC continuous damping controller, and the CDC continuous damping controller sends the signal to the CAN module. The CAN module sends the received signal to the central control system. Refer to Figure 8 , the vehicle acceleration sensor of the present invention includes a wheel acceleration sensor installed on the wheel and a body acceleration sensor installed in the vehicle. The data or signals collected by the acceleration sensor need to be decoded by the CDC continuous damping controller, and the decoded data is communicated through the CAN module, and then can be transmitted to the industrial control system.

[0029] In a preferred embodiment of the present invention, an operation button 11 is provided on the frame. The operation button 11 is connected to the industrial control system. Each fixture is provided with a position code, and the industrial control system is configured with a barcode scanner to scan the position code on each fixture. The operation button 11 of the present invention may include a start button, a pause button, a forward button, and a reverse button; the start button can control the entire device to start the detection, that is, fix the sensor to be detected from the start control side push mechanism, the pause button can temporarily interrupt the detection process, the forward button can make the rotary base 51 rotate to the forward position, generally the forward position is the initial position, and the reverse button can make the rotary base 51 return to the reverse position or the negative position; the operation button of the present invention can be used for operation during experiments or trial runs, facilitating more direct temporary operation of each step.

[0030] Reference Figure 7 , the detection method of the present invention includes the following steps: Step S1: Pre-store the detection models corresponding to each sensor to be detected in the industrial control system, determine the type of the sensor to be detected, and the industrial control system automatically matches the detection model that matches the type of the sensor to be detected according to the type of the sensor to be detected.

[0031] During the detection process of the present invention, considering that the characteristics of each sensor to be detected are different and the detection parameters required are not completely the same, a detection model is established in advance according to the type of each sensor to be detected. Specifically, the detection model of the present invention includes the following content: the number of detection nodes of the sensor to be detected of this type and the rotation speed of the corresponding rotary platform for each detection node. A detection node refers to that when the rotary platform reaches certain rotation speeds, a detection is performed to obtain the acceleration acquisition value collected by the sensor to be detected itself, and at the same time, the rotation speed of the current rotary platform and the radius parameters of the fixture and the rotary platform are obtained. The acceleration calculation value Gm can be calculated through the rotation speed and the radius parameters, and the corresponding calculation method belongs to the prior art. Therefore, in the detection model, there will be multiple detection nodes, and detections will be performed at different rotation speeds to obtain multiple sets of data such as acceleration acquisition values and acceleration calculation values.

[0032] Before the detection, it is necessary to pre-select the detection model corresponding to the sensor to be detected. After the selection is completed, then place the sensor to be detected in the fixture to start the detection.

[0033] Step S2: Each sensor to be detected is provided with an identity code, each fixture is provided with a position code, use a barcode scanner to scan the identity code on the sensor to be detected and the position code of the corresponding fixture, and the industrial control system associates the fixture position with the sensor to be detected.

[0034] Since the present invention can detect multiple sensors to be detected simultaneously, in order for the industrial control system to facilitate the classification and identification of the data of each sensor to be detected, identity codes are first set for each sensor to be detected, and each jig also has a fixed position code. In this way, during the automatic detection process, the data generated on each jig can be automatically entered into the directory corresponding to the sensor to be detected in the industrial control system, facilitating viewing and data export. When the present invention scans, it can first scan the identity code of the sensor to be detected, and then scan the position code on the jig, so as to complete the association between the two.

[0035] Step S3: Place all the sensors to be detected into the profiling grooves in the corresponding jigs respectively. According to the received detection start instruction, the industrial control system controls the side push mechanism to fix the sensors to be detected in the profiling grooves and connect the sensors to be detected to the signal adapter.

[0036] After the sensors to be detected are respectively placed into the profiling grooves, an instruction to start detection can be issued. After receiving the instruction, the industrial control system first controls the side push mechanism to connect the sensors to be detected to the signal adapter. After the signal adapter is connected, the acceleration acquisition values collected by the sensors to be detected themselves can be transmitted to the industrial control system.

[0037] Step S4: Determine whether all the sensors to be detected are connected to the signal adapter. After being connected, the industrial control system retrieves the detection model and determines the rotation speed of the rotating platform at each detection node from the detection model; then the industrial control system starts the rotation of the rotating platform for the first detection.

[0038] For example, in the detection model corresponding to the wheel acceleration sensor, the rotation speed of the rotating platform gradually increases from 0 to 250 rpm, and data is collected once at each detection node with an increase of 10 rpm in rotation speed. An acceleration acquisition value and an acceleration calculation value can be obtained at each detection node.

[0039] After the first detection is completed, the industrial control system controls the rotating platform to stop running, controls the rotary base to rotate 180°, and then starts the rotation of the rotating platform for the second detection. The second detection process, detection nodes, and detection model are the same as those of the first detection, only the installation directions of the sensors to be detected are opposite.

[0040] Step S5: During the rotation of the rotating platform, at each detection node, the data collected from the sensors to be detected is transmitted to the industrial control system through the wire harness and the electric slip ring via the signal adapter, and the acceleration acquisition value Gn of each sensor to be detected is obtained; the acceleration acquisition value Gn is compared with the acceleration calculation value Gm calculated by the currently matched detection model to obtain the difference Gx.

[0041] Step S6: Determine whether the difference Gx exceeds the threshold value to obtain the detection result of the sensor to be detected.

[0042] Preferably, the types of sensors to be detected include wheel acceleration sensors and vehicle body acceleration sensors; the identity code of the sensor to be detected and the position code of the jig are barcodes or QR codes.

[0043] Preferably, during the first detection or the second detection, the rotation speed of the rotating platform controlled by the industrial control system gradually increases to the maximum speed with the detection time, and data is collected once when the preset speed node is reached; the maximum speed during the detection process is 250 rpm.

[0044] Example 1: Operation process of a vehicle body acceleration sensor of a domestic enterprise Step S1: Select the sensor to be detected as the vehicle body acceleration sensor in the industrial control system, and the industrial control system automatically matches a detection model that matches the type of the sensor to be detected according to the type of the sensor to be detected.

[0045] Step S2: Use a barcode scanner to scan the identity code on the sensor to be detected and the position code of the corresponding jig, and the industrial control system associates the jig position with the sensor to be detected.

[0046] Step S3: Place 1 sensor to be detected into the profiling groove in the corresponding jig. The industrial control system controls the side push mechanism to fix the sensor to be detected in the profiling groove according to the received detection start instruction, and connects the sensor to be detected to the signal adapter.

[0047] Step S4: After all sensors to be detected are connected to the signal adapter, the industrial control system retrieves the detection model, determines the rotation speed of the rotating platform at each detection node from the detection model; then the industrial control system starts the rotating platform to rotate for the first detection.

[0048] After the first detection is completed, the industrial control system controls the rotating platform to stop running, the industrial control system automatically controls the rotary base to rotate 180°, and then starts the rotating platform to rotate for the second detection.

[0049] Step S5: During the rotation of the rotating platform, at each detection node, the data collected from the sensor to be detected is transmitted to the industrial control system through the wire harness and the electric slip ring through the signal adapter, and the acceleration acquisition value Gn of each sensor to be detected is obtained; the acceleration acquisition value Gn is compared with the acceleration calculation value Gm calculated by the currently matched detection model to obtain the difference Gx.

[0050] Step S6: Determine whether the difference Gx exceeds the threshold value to obtain the detection result of the sensor to be detected. The detection node and the detection result are as follows. During this detection process, the radius distance R between the jig and the center of the rotating platform is 0.3 m. When the acceleration acquisition value Gn is within the range of the Gn upper limit and the Gn lower limit in the table, it is determined that the sensor to be detected is qualified. If it is not between this Gn upper limit and the Gn lower limit, it is determined to be unqualified.

[0051] Table 1: Detection Parameters for the First Detection - Forward Detection node N (rpm) Acceleration acquisition value Acceleration calculated value Gn upper limit Gn lower limit 0 0 0 0 0.13 -0.13 1 10 0.03 0.03 0.04 0.03 2 20 0.13 0.13 0.14 0.13 3 30 0.31 0.30 0.32 0.29 4 40 0.55 0.54 0.57 0.51 5 50 0.83 0.84 0.88 0.80 6 60 1.18 1.21 1.27 1.15 7 70 1.69 1.65 1.73 1.57 8 80 2.20 2.15 2.26 2.04 9 90 2.81 2.72 2.86 2.59 10 100 3.45 3.36 3.53 3.20 11 110 4.12 4.07 4.27 3.87 12 120 4.95 4.84 5.09 4.60 13 130 5.75 5.68 5.97 5.40 14 140 6.75 6.59 6.92 6.26 15 150 7.67 7.57 7.95 7.19 16 160 8.83 8.61 9.04 8.18 17 170 9.72 9.72 10.21 9.23 18 180 10.90 10.90 11.44 10.35 19 190 12.14 12.14 12.75 11.53 21 200 13.45 13.45 14.13 12.78 21 210 14.83 14.83 15.57 14.09 22 220 15.98 15.98 16.78 15.18 From the detection results in Table 1 above, it can be seen that when the sensor to be detected is undergoing forward detection, it can be considered that the result of the first detection is qualified.

[0052] Table 2: Detection Parameters for the Second Detection - Reverse Detection node N (rpm) Acceleration acquisition value Acceleration calculated value Gn upper limit Gn lower limit 0 0 0.00 0.00 0.13 -0.13 1 10 -0.03 -0.03 -0.03 -0.04 2 20 -0.13 -0.13 -0.13 -0.14 3 30 -0.30 -0.30 -0.29 -0.32 4 40 -0.55 -0.54 -0.51 -0.57 5 50 -0.85 -0.84 -0.80 -0.88 6 60 -1.22 -1.21 -1.15 -1.27 7 70 -1.69 -1.65 -1.57 -1.73 8 80 -2.19 -2.15 -2.04 -2.26 9 90 -2.78 -2.72 -2.59 -2.86 10 100 -3.47 -3.36 -3.20 -3.53 11 110 -4.15 -4.07 -3.87 -4.27 12 120 -4.94 -4.84 -4.60 -5.09 13 130 -5.79 -5.68 -5.40 -5.97 14 140 -6.72 -6.59 -6.26 -6.92 15 150 -7.72 -7.57 -7.19 -7.95 16 160 -8.81 -8.61 -8.18 -9.04 17 170 -9.94 -9.72 -9.23 -10.21 18 180 -11.15 -10.90 -10.35 -11.44 19 190 -12.46 -12.14 -11.53 -12.75 21 200 -13.81 -13.45 -12.78 -14.13 21 210 -15.12 -14.83 -14.09 -15.57 22 220 -16.38 -15.98 -15.18 -16.78 From the detection results in Table 2 above, it can be seen that when the sensor to be detected is undergoing reverse detection, it can be considered that the result of the second detection is qualified. Therefore, it can be concluded that the sensor to be detected is qualified.

[0053] The detection parameters in Table 1 and Table 2 above are only the detection parameters of one sensor to be detected. If each detection includes multiple sensors to be detected, corresponding multiple sets of detection parameters will be formed.

[0054] Although the specific implementation manners of the present invention have been described in detail with reference to the accompanying drawings, it should not be construed as a limitation on the protection scope of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative efforts still fall within the protection scope of this patent.

Claims

1. A centrifugal acceleration sensor detection device, characterized in that: It includes a frame, an intermediate platform installed inside the frame, and a rotating platform installed on the intermediate platform; The rotating platform is configured with a motor drive mechanism, which drives the rotating platform to perform a rotating motion through the motor drive mechanism. Several fixtures are distributed on the rotating platform; The fixture includes a rotary base and a profiling seat fixedly installed on the rotary base; a profiling groove for accommodating the sensor to be detected is provided on the profiling seat, and a side push mechanism for fixing the sensor to be detected is arranged on the side of the profiling groove; the side push mechanism includes a side pusher and a side push pressing plate connected to the telescopic rod of the side pusher; a signal adapter is arranged on the profiling seat, and the signal adapters configured for all the fixtures are connected to the electric slip ring through a wire harness, and the electric slip ring transmits the signal to the industrial control system; The industrial control system controls the motor drive mechanism on the rotating platform through a servo driver, and the industrial control system controls the working conditions of the rotary base and the side push mechanism.

2. The centrifugal acceleration sensor detection device according to claim 1, characterized in that: The frame includes a bottom frame and an outer cover. The intermediate platform is installed on the bottom frame, and the outer cover is buckled on the upper part of the bottom frame to enclose the rotating platform inside. An annular cover is arranged between the rotating platform and the intermediate platform; electrical interfaces and several side doors are arranged on the bottom frame, and the electrical interfaces are used to connect with external electrical equipment.

3. The centrifugal acceleration sensor detection device according to claim 1, characterized in that: 4 - 8 fixtures are evenly distributed on the rotating platform, and each fixture is fixed on the rotating platform through a fixture mounting block and bolts.

4. The centrifugal acceleration sensor detection device according to claim 1, characterized in that: The side pusher is a side push cylinder or a side push electric cylinder. The side push pressing plate enters the profiling groove after passing through the side groove of the profiling seat, and the side push pressing plate presses the sensor to be detected under the drive of the side pusher; the rotary base is a rotary cylinder or a numerically controlled rotary table.

5. The centrifugal acceleration sensor detection device according to claim 1, characterized in that: The side pusher is a side push cylinder, and the rotary base is a rotary cylinder; a compressed air source is configured on the rotating platform, and each fixture is provided with an air pipe joint and a solenoid valve group connected to the compressed air source, and is connected to the side push cylinder and the rotary cylinder through the air pipe joint, and the working conditions of the cylinders are controlled through the solenoid valve group.

6. The centrifugal acceleration sensor detection device according to claim 1, characterized in that: The sensor to be detected is connected to the electric slip ring through a signal adapter, the electric slip ring is connected to a CDC continuous damping controller, the CDC continuous damping controller sends the signal to a CAN module, and the CAN module sends the received signal to the central control system.

7. The centrifugal acceleration sensor detection device according to claim 1, characterized in that: Operation buttons are arranged on the frame, and the operation buttons are connected to the industrial control system. A position code is set on each fixture, and the industrial control system is configured with a barcode scanner to scan the position code on each fixture.

8. A detection method using the centrifugal acceleration sensor detection device according to any one of claims 1 to 7, characterized in that: It includes the following steps: Step S1: Pre - store the detection models corresponding to each type of sensor to be detected in the industrial control system, determine the type of the sensor to be detected, and the industrial control system automatically matches the detection model that matches the type of the sensor to be detected according to the type of the sensor to be detected; Step S2: Each sensor to be detected is provided with an identity code, and each fixture is provided with a position code. Use a barcode scanner to scan the identity code on the sensor to be detected and the position code of the corresponding fixture, and the industrial control system associates the fixture position with the sensor to be detected; Step S3: Place all the sensors to be detected into the profiling grooves of the corresponding fixtures respectively. The industrial control system controls the side push mechanism to fix the sensors to be detected in the profiling grooves according to the received detection start instruction, and make the sensors to be detected connected to the signal adapters; Step S4. Determine whether all sensors to be tested are connected to the signal adapter. After connection, the industrial control system retrieves the detection model and determines the rotational speed of the rotating platform at each detection node from the detection model. Then, the industrial control system starts the rotation of the rotating platform for the first detection. After the first detection is completed, the industrial control system controls the rotating platform to stop running, controls the slewing base to rotate 180°, and then starts the rotation of the rotating platform for the second detection. Step S5. During the rotation of the rotating platform, data collected from the sensors to be tested are transmitted to the industrial control system through the wire harness and the electric slip ring via the signal adapter at each detection node, and the acceleration acquisition value Gn of each sensor to be tested is obtained. Compare the acceleration acquisition value Gn with the acceleration calculation value Gm calculated by the currently matched detection model to obtain the difference Gx. Step S6. Determine whether the difference Gx exceeds the threshold to obtain the detection result of the sensor to be tested.

9. The detection method according to claim 7, characterized in that: The types of the sensors to be tested include wheel acceleration sensors and vehicle body acceleration sensors; the identity codes of the sensors to be tested and the position codes of the fixtures are barcodes or QR codes.

10. The detection method according to claim 7, characterized in that: During the first or second detection, the rotational speed of the rotating platform controlled by the industrial control system gradually increases to the maximum rotational speed with the detection time, and data is collected once when the preset rotational speed node is reached; the maximum rotational speed during the detection process is 250 rpm.

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