Device and method for detecting displacement precision of steering sensor

Abstract

The invention relates to the technical field of detection devices, in particular to a steering sensor displacement precision detection device and method, and the device comprises a driving mechanism which is used for driving a steering sensor to rotate; the measuring mechanism is used for being electrically connected with the driving mechanism and the steering sensor and measuring the displacement precision of the steering sensor. According to the scheme, the structure is simple, the operation is convenient, the detection precision and the detection efficiency are high, the displacement precision of the steering sensor can be detected at any time before the vehicle is assembled, and the loss caused by stop and reworking of a vehicle production line due to unqualified detection of the steering sensor after the vehicle is assembled is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a steering sensor displacement accuracy detection device and a detection method. Background Art

[0002] In modern life, with the in-depth application of components such as automatic driving systems, body stability systems, and automatic emergency braking systems in passenger cars, commercial vehicles and other vehicles, automotive steering sensors, as an important component for sensing the driver's steering intention, need to strictly control their displacement accuracy and manufacturing quality.

[0003] The existing detection of steering sensor displacement accuracy is done after the vehicle is assembled and during the vehicle offline test. Only at this time can the steering sensor accuracy quality problems be detected, but problems with the steering sensor often cause the vehicle production line to stop and rework, resulting in large losses. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a method for solving the problem in the prior art that the detection of the displacement accuracy of the steering sensor can only be performed after the vehicle is assembled.

[0005] In order to achieve the above-mentioned object and other related objects, the present invention provides a steering sensor displacement accuracy detection device, comprising:

[0006] A driving mechanism, used for driving the steering sensor to rotate;

[0007] The measuring mechanism is used to be electrically connected to the driving mechanism and the steering sensor respectively, and to measure the displacement accuracy of the steering sensor.

[0008] Optionally, the driving mechanism includes a driving member, a connecting plate and a transmission member, wherein the transmission member is used to respectively connect to the output end of the driving member and the input end of the steering sensor, and the connecting plate is arranged on the driving member, and the connecting plate is used to connect the steering sensor and the driving member.

[0009] Optionally, the driving mechanism further comprises a numerical control module for controlling the operation of the driving member, and the numerical control module is electrically connected to the driving member.

[0010] Optionally, the steering sensor displacement accuracy detection device further includes a coding module, which is disposed on the output end of the driving mechanism and is electrically connected to the numerical control module, and is used to obtain a rotation angle value of the output end of the driving mechanism.

[0011] Optionally, a mounting hole for connecting the driving member is provided on the connecting plate, and a mounting member is fitted in the mounting hole.

[0012] Optionally, a positioning mandrel is provided on the connecting plate, and the positioning mandrel is used for positioning the steering sensor when it is installed on the connecting plate.

[0013] Optionally, the end of the positioning core shaft facing away from the connecting plate is a locking end with a thread, and a locking nut matching with the locking end is sleeved on the locking end.

[0014] Optionally, the transmission member is provided with a keyway for cooperating with a rotating pin of the steering sensor.

[0015] Optionally, a through hole is provided on the connecting plate, so that an input end of the steering sensor and an output end of the driving member can pass through the connecting plate.

[0016] The present invention also provides a method for detecting displacement accuracy of a steering sensor, comprising:

[0017] The driving mechanism drives the steering sensor to rotate according to the command angular displacement value;

[0018] sending the actual angular displacement data of the steering sensor to the measuring mechanism;

[0019] The measuring mechanism calculates the actual angular displacement value through the actual angular displacement data, calculates the difference between the actual angular displacement value and the command angular displacement value, and compares the difference with a preset difference range to obtain a detection result.

[0020] As described above, the steering sensor displacement accuracy detection device of the present invention has the following beneficial effects:

[0021] The driving mechanism of this solution can drive the steering sensor to rotate according to the command angular displacement value. The measuring mechanism obtains the actual angular displacement value of the steering sensor by calculation, and calculates the difference between the command angular displacement value and the actual angular displacement value. If the difference is within the preset difference range, it is qualified, and if it is not within the preset difference range, it is unqualified. This solution has a simple structure, convenient operation, high detection accuracy and detection efficiency, and can detect the displacement accuracy of the steering sensor at any time before the vehicle is assembled, avoiding losses caused by unqualified steering sensor detection after vehicle assembly, resulting in vehicle production line shutdown and rework. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the embodiment of the present invention in cooperation with a steering sensor;

[0023] Figure 2 for Figure 1 A top view of

[0024] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 4 for Figure 3 A top view of

[0026] Figure 5 A schematic diagram of the structure of a connecting plate according to an embodiment of the present invention;

[0027] Figure 6 for Figure 5 A top view of

[0028] Figure 7 It is a schematic structural diagram of the cooperation between the driving member and the transmission member according to an embodiment of the present invention.

[0029] Part Number Description

[0030] 1-driving mechanism; 11-driving member; 111-output shaft of the motor; 112-flange; 12-connecting plate; 121-locking nut; 122-positioning spindle; 123-mounting member; 124-through hole; 125-mounting hole; 13-transmission member; 131-keyway; 132-driving power line; 133-encoding module signal line; 14-CNC module; 2-steering sensor; 21-rotating pin; 3-measuring mechanism; 31-computer; 32-module interface card. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0032] It should be noted that the diagram provided in the present embodiment only illustrates the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components during actual implementation. The type, quantity and ratio of each component during actual implementation can be a random change, and the component layout type may also be more complicated. The structure, ratio, size, etc. illustrated in the drawings of the present specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect that the present invention can produce and the purpose that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the present invention. The change or adjustment of its relative relationship should also be regarded as the scope of the present invention without substantially changing the technical content.

[0033] See also Figures 1 to 7 , this embodiment provides a steering sensor displacement accuracy detection device, including a driving mechanism 1 and a measuring mechanism 3. The output end of the driving mechanism 1 is transmission-connected to the input end of the steering sensor 2, and the driving mechanism 1 can drive the steering sensor 2 to rotate a specified angle, that is, the driving mechanism 1 drives the steering sensor 2 to rotate at the command angular displacement value. The measuring mechanism 3 is electrically connected to the driving mechanism 1 and the steering sensor 2 respectively, and the steering sensor 2 sends its actual angular displacement data to the measuring mechanism 3, and the measuring mechanism 3 obtains the actual angular displacement value by compiling and calculating the actual angular displacement data. The measuring mechanism 3 calculates the difference between the command angular displacement value and the actual angular displacement value. If the difference between the command angular displacement value and the actual angular displacement value is within the preset difference range, the displacement accuracy detection of the steering sensor 2 is qualified; if the difference between the command angular displacement value and the actual angular displacement value is not within the preset difference range, the displacement accuracy detection of the steering sensor 2 is unqualified. Exemplarily, the angular displacement range of the steering sensor 2 is ±780°, the command angular displacement value is +90°, and the preset difference range is ±2.5°. Exemplarily, the measuring mechanism 3 includes a module interface card 32 and a computer 31. Specifically, the module interface card 32 can be a CAN line interface card. The module interface card 32 can connect the steering sensor 2 and the computer 31, and is used for the steering sensor 2 to receive messages, convert and send them to the computer 31. The computer 31 is installed with an operating system, a module interface card driver, measurement software, etc., and is used to receive message data from the module interface card 32.

[0034] In this embodiment, the driving mechanism 1 can drive the steering sensor 2 to rotate according to the command angular displacement value, the measuring mechanism 3 obtains the actual angular displacement data of the steering sensor 2 and compiles and calculates the actual angular displacement value, and then calculates the difference between the command angular displacement value and the actual angular displacement value. If the difference is within the preset difference range, it is qualified, and if it is not within the preset difference range, it is unqualified. This embodiment has a simple structure, convenient operation, high detection accuracy and detection efficiency, and can detect the displacement accuracy of the steering sensor 2 at any time before the vehicle is assembled, avoiding the failure of the steering sensor 2 after the vehicle is assembled, resulting in the shutdown of the vehicle production line and rework, causing losses.

[0035] In one embodiment, if Figures 1 to 4 As shown, the driving mechanism 1 includes a driving member 11, a connecting plate 12 and a transmission member 13. The transmission member 13 is used to drive and connect the output end of the driving member 11 and the input end of the steering sensor 2. The connecting plate 12 is arranged on the driving member 11. The connecting plate 12 is used to install the steering sensor 2 on the driving member 11. The connecting plate 12 is a metal plate with a rectangular cross section. The output end of the driving member 11 is arranged upward in the vertical direction. The connecting plate 12 is arranged between the top of the driving member 11 and the steering sensor 2. The output end of the driving member 11 can pass through the connecting plate 12 to be driven and connected with the input end of the steering sensor 2. The connecting plate 12 is used to connect the steering sensor 2 and the driving member 11. Exemplarily, the driving member 11 is a motor, and the output end of the motor is the output shaft 111 of the motor. The transmission member 13 is a coupling, and the lower end of the coupling is sleeved on the top outer wall of the motor output shaft. The steering sensor 2 can be mounted on the top of the driving member 11 through the connecting plate 12 , and the steering sensor 2 is driven to rotate more stably at the output end of the driving member 11 , thereby making the measurement result of the measuring mechanism 3 more accurate.

[0036] In one embodiment, if Figures 1 to 4 As shown, the drive mechanism 1 also includes a numerical control module 14 for controlling the operation of the drive member 11, and the numerical control module 14 is electrically connected to the drive member 11. Exemplarily, the numerical control module 14 is an industrial computer, which has the function of compiling programs as required and causing the drive member 11 to drive the steering sensor 2 to rotate according to the command angular displacement value. The numerical control module 14 is connected to the drive member 11 through a driving power line 132. The numerical control module 14 can more accurately control the drive mechanism 1 to drive the steering sensor 2 to rotate a specified angle, and the numerical control module 14 can compile programs according to the detection requirements, so that the detection results are more accurate and the detection work is simpler.

[0037] In one embodiment, the displacement accuracy detection device of the steering sensor 2 further includes an encoding module, which is arranged on the output end of the driving mechanism 1 and is electrically connected to the numerical control module 14, and is used to obtain the output end rotation angle value of the driving mechanism 1. Exemplarily, the encoding module is a sensor installed on the output end of the driving member 11, which can measure the actual rotation angle of the output end of the driving member 11, that is, the output end rotation angle value of the driving mechanism 1, and the encoding module and the numerical control module 14 are electrically connected through the encoding module signal line 133. The encoding module then feeds back the output end rotation angle value of the driving mechanism 1 to the numerical control module 14. If the output end rotation angle value of the driving mechanism 1 is not equal to the command angular displacement value, the numerical control module 14 corrects the output end rotation angle of the driving member 11 so that the output end rotation angle value of the driving mechanism 1 is equal to the command angular displacement value. The encoding module can realize the correction of the output end rotation angle of the driving member 11, thereby improving the accuracy of the detection.

[0038] In one embodiment, if Figure 5 As shown, the connecting plate 12 is provided with a mounting hole 125 for connecting the driving member 11, and a mounting member 123 is matched in the mounting hole 125. The mounting hole 125 is an internal screw hole that penetrates the thickness direction of the connecting plate 12. There are four mounting holes 125, which are respectively arranged at the four corners of the connecting plate 12 to improve the connection strength between the connecting plate 12 and the driving member 11. The mounting member 123 is a bolt, and the connecting plate 12 is fixed to the top surface flange 112 of the driving member 11 through the matching between the mounting hole 125 and the mounting member 123.

[0039] In one embodiment, if Figures 1 to 5 As shown, the connection plate 12 is provided with a positioning mandrel 122, which is used for positioning the steering sensor 2 when it is installed with the connection plate 12. The connection plate 12 is provided with a positioning hole arranged in the vertical direction, and the positioning mandrel 122 is matched in the positioning hole. The number of the positioning holes and the positioning mandrel 122 is more than two to improve the positioning effect. The lower end of the positioning mandrel 122 is arranged in the positioning hole of the connection plate 12, and the upper end is arranged in the positioning hole of the steering sensor 2.

[0040] In one embodiment, if Figure 1 , Figure 3 and Figure 5 As shown, the end of the positioning mandrel 122 away from the connecting plate 12 is a locking end with a thread, and a locking nut 121 matching therewith is provided on the locking end. The top end of the positioning mandrel 122 is a locking end with an external thread, and a locking nut 121 is provided on the locking end to lock the connecting plate 12 and the steering sensor 2, thereby improving the connection stability between the two and thus improving the accuracy of the detection result.

[0041] In one embodiment, if Figures 1 to 4and Figure 7 As shown, the transmission member 13 is provided with a keyway 131 for cooperating with the rotating pin 21 of the steering sensor 2. The keyway 131 is a keyway 131 arranged along the axial direction of the transmission member 13, and the rotating pin 21 of the steering sensor 2 is connected and matched with the keyway 131, so that the driving end of the driving member 11 can drive the steering sensor 2 to rotate through the transmission member 13.

[0042] In one embodiment, if Figure 5 and Figure 6 As shown, the connecting plate 12 is provided with a through hole 124 for passing the input end of the steering sensor 2 and the output end of the driving member 11. The input end of the steering sensor 2 and the output end of the driving member 11 can pass through the through hole 124 on the connecting plate 12 and be connected together.

[0043] This embodiment also provides a method for detecting displacement accuracy of a steering sensor, comprising:

[0044] The driving member 11 of the driving mechanism 1 drives the steering sensor 2 to rotate according to the command angular displacement value;

[0045] The steering sensor 2 sends the actual angular displacement value to the computer 31 of the measuring mechanism 3 through the module interface card 32;

[0046] The measurement software of the computer 31 compiles and calculates the actual angular displacement value of the steering sensor 2 according to the actual angular displacement data of the steering sensor 2 (compilation and calculation of the actual angular displacement value of the steering sensor 2 according to the actual angular displacement data is a technical means disclosed in the prior art), and calculates the difference between the command angular displacement and the actual angular displacement, and compares the difference with the preset difference range to obtain the detection result;

[0047] If the difference is within the preset difference range, the displacement accuracy of the steering sensor 2 is qualified; if the difference is not within the preset difference range, the displacement accuracy of the steering sensor 2 is unqualified.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A steering sensor displacement accuracy detection device, characterized in that: include: A driving mechanism, used for driving the steering sensor to rotate; The measuring mechanism is used to be electrically connected to the driving mechanism and the steering sensor respectively, and to measure the displacement accuracy of the steering sensor.

2. The steering sensor displacement accuracy detection device according to claim 1, characterized in that: The driving mechanism includes a driving member, a connecting plate and a transmission member, wherein the transmission member is used for transmission connection with the output end of the driving member and the input end of the steering sensor respectively, and the connecting plate is arranged on the driving member, and the connecting plate is used for connecting the steering sensor and the driving member.

3. The steering sensor displacement accuracy detection device according to claim 2, characterized in that: The driving mechanism further comprises a numerical control module for controlling the operation of the driving member, and the numerical control module is electrically connected to the driving member.

4. The steering sensor displacement accuracy detection device according to claim 3, characterized in that: The steering sensor displacement accuracy detection device also includes a coding module, which is arranged on the output end of the driving mechanism and is electrically connected to the numerical control module, and is used to obtain the rotation angle value of the output end of the driving mechanism.

5. The steering sensor displacement accuracy detection device according to claim 2, characterized in that: The connecting plate is provided with a mounting hole for connecting the driving member, and a mounting member is fitted in the mounting hole.

6. The device for detecting displacement accuracy of a steering sensor according to claim 2, characterized in that: The connecting plate is provided with a positioning mandrel, and the positioning mandrel is used for positioning when the steering sensor is installed on the connecting plate.

7. The device for detecting displacement accuracy of a steering sensor according to claim 6, characterized in that: The end of the positioning mandrel facing away from the connecting plate is a locking end with threads, and a locking nut matching with the locking end is arranged on the outer sleeve of the locking end.

8. The device for detecting displacement accuracy of a steering sensor according to claim 2, characterized in that: The transmission member is provided with a keyway for matching with the rotating pin shaft of the steering sensor.

9. The steering sensor displacement accuracy detection device according to claim 2, characterized in that: The connecting plate is provided with a through hole, so that the input end of the steering sensor and the output end of the driving member can pass through the connecting plate.

10. A method for detecting displacement accuracy of a steering sensor, characterized in that: include, The driving mechanism drives the steering sensor to rotate according to the command angular displacement value; sending the actual angular displacement data of the steering sensor to the measuring mechanism; The measuring mechanism calculates the actual angular displacement value through the actual angular displacement data, calculates the difference between the actual angular displacement value and the command angular displacement value, and compares the difference with a preset difference range to obtain a detection result.

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