Windscreen wiper motor wiping angle parameter adjusting system and method based on LIN communication

Abstract

The invention relates to the technical field of wiper motor wiping angle parameter adjustment, and discloses a wiper motor wiping angle parameter adjustment system and method based on LIN communication.The wiper motor wiping angle parameter adjustment system comprises wiping angle detection equipment, a wiper control module and LIN communication.The wiping angle detection equipment is used for inputting wiping angle compensation information, the wiper control module is used for executing wiping angle compensation, and the LIN communication.The LIN communication.The LIN communication.The LIN communication.The LIN communication.The LIN communication.The LIN communication.The LIN communication.The LIN communication.The LIN and the LIN communication is used for connecting the wiper angle detection equipment and the windscreen wiper control module so as to facilitate signal processing, message distribution, monitoring of the data transmission process and rate and self-diagnosis. Compensation information is input to the windscreen wiper control module through wiping angle detection equipment of the windscreen wiper production line; the windscreen wiper control module checks the validity of the compensation instruction; and executing the compensation program after the compensation instruction passes the verification. The production efficiency is improved, the production cost is reduced, meanwhile, the product quality is ensured, a more reliable and safer windscreen wiper system is provided for a user, and practicability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of adjusting wiper motor scraping angle parameters, and in particular to a wiper motor scraping angle parameter adjustment system and method based on LIN communication. Background Art

[0002] ‌‌A wiper is a tool installed on the front windshield of a motor vehicle to prevent rain and other dirt from affecting vision. The wiper removes raindrops and dust attached to the vehicle windshield through the wiper, thereby improving the driver's visibility and increasing driving safety. During the production process of the wiper transmission assembly, due to the tolerance and assembly errors of each component, the scraping angle of the wiper assembly may deviate from the designed scraping angle, thereby affecting the cleaning effect of the wiper and driving safety. In order to prevent this from happening, a special wiper motor scraping angle parameter adjustment system is required.

[0003] Traditional wiper systems often find it difficult to achieve real-time adjustment of wiping angle parameters, requiring operators to manually intervene or replace parts, which not only wastes resources but also is cumbersome and inefficient. To this end, we provide a wiper motor wiping angle parameter adjustment system and method based on LIN communication. Summary of the invention

[0004] In order to solve the problem in the above-mentioned background technology that the traditional wiper system is difficult to achieve real-time adjustment of the wiping angle parameters, and the operator needs to manually intervene or replace parts, which not only causes waste of resources but also cumbersome operation and affects production efficiency, the present invention provides a wiper motor wiping angle parameter adjustment system and method based on LIN communication.

[0005] The present invention is implemented by the following technical solution: a wiper motor scraping angle parameter adjustment system based on LIN communication, comprising: A scraping angle detection device, wherein the scraping angle detection device is used for inputting scraping angle compensation information; A wiper control module, the wiper control module is used to perform wiper angle compensation; LIN communication, which is used to connect the wiper angle detection device and the wiper control module to facilitate signal processing, message distribution, monitoring of data transmission process and its rate, and self-diagnosis.

[0006] As a further improvement of the above solution, the compensation information input by the scraping angle detection device will be tested for validity after being sent to the wiper control module.

[0007] As a further improvement of the above solution, the wiper control module is provided with a central control unit MCU for receiving compensation instruction node information, and the central control unit MCU performs a CRC check value verification on the received compensation instruction node information.

[0008] As a further improvement of the above solution, the program in the central control unit MCU sets the maximum compensation value to X1.

[0009] As a further improvement of the above solution, if the compensation value is greater than X1, no compensation is performed, and if the compensation value is less than X1, it is written into a specific address in the EEPROM.

[0010] As a further improvement of the above solution, the basic data format of the compensation instruction meets the specification requirements of LIN communication, and 8 bytes of data are transmitted each time.

[0011] As a further improvement of the above solution, the function implementation node of the LIN communication is PID1.

[0012] As a further improvement of the above solution, the scraping angle compensation information of the compensation instruction is A1-A8, and the content can be customized according to needs.

[0013] As a further improvement of the above solution, the customized content includes compensation type instructions, scraping angle compensation values, CRC check values, etc.

[0014] A method for adjusting a wiper motor scraping angle parameter adjustment system based on LIN communication comprises the following steps: S1. Input compensation information to the wiper control module through the wiper angle detection device of the wiper production line; S2, the wiper control module checks the validity of the compensation command; S3. After the compensation instruction is verified, the compensation program is executed.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes intelligent compensation and correction of wiper motor scraping angle parameters through a method based on LIN communication, thereby solving the problem of unqualified scraping angle of wiper assembly caused by component tolerance and assembly error in the traditional production process. Correction instructions are sent to the wiper motor through the LIN communication protocol, so that the wiping effect of the wiper assembly meets the standard requirements, which not only improves production efficiency and reduces production costs, but also ensures product quality, providing users with a more reliable and safer wiper system.

[0016] The LIN communication protocol of the present invention is suitable for automotive electronic systems and has the characteristics of simplicity, low cost, high reliability, etc. This protocol can ensure the stability and real-time performance of data transmission to meet the requirements for adjusting the wiper motor scraping angle parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a system block diagram of the scraping angle compensation function based on LIN communication of the present invention; Figure 2 The scraping angle compensation instruction format definition diagram of the present invention; Figure 3 This is a flow chart of the scraping angle compensation program of the present invention.

[0018] Description of main symbols: 1. Wiping angle detection equipment; 2. Wiper control module; 3. LIN communication. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. Example

[0020] Please combine Figure 1-3 , a wiper motor scraping angle parameter adjustment system based on LIN communication of this embodiment includes: A scraping angle detection device 1, which is used for inputting scraping angle compensation information; The wiper control module 2 is used to perform wiper angle compensation. The compensation information input by the wiper angle detection device 1 will be tested for validity after being sent to the wiper control module 2. The wiper control module 2 is provided with a central control unit MCU for receiving compensation instruction node information. The central control unit MCU will perform a CRC check value check on the received compensation instruction node information. The program in the central control unit MCU sets the maximum compensation value to X1. If the compensation value is greater than X1, no compensation will be performed. If the compensation value is less than X1, it will be written into a specific address in the EEPROM; LIN communication 3, LIN communication 3 is used to connect the wiper angle detection device 1 and the wiper control module 2 to facilitate signal processing, message distribution, monitoring of data transmission process and its rate, and self-diagnosis. The basic data format of the compensation instruction meets the specification requirements of LIN communication 3, and 8 bytes of data are transmitted each time. The function implementation node of LIN communication 3 is PID1, and the wiper angle compensation information of the compensation instruction is A1-A8, and the content can be customized according to needs.

[0021] A method for adjusting a wiper motor scraping angle parameter adjustment system based on LIN communication comprises the following steps: The first step is to input compensation information to the wiper control module 2 through the wiper angle detection device 1 of the wiper production line; Step 2: The wiper control module 2 checks the validity of the compensation instruction; Step 3: Execute the compensation procedure after the compensation instruction verification is passed.

[0022] The implementation principle of a wiper motor scraping angle parameter adjustment system and method based on LIN communication in the embodiment of the present application is as follows: first, the compensation information is input to the wiper control module 2 through the scraping angle detection device 1 of the wiper production line, and then the wiper control module 2 will check the validity of the compensation instruction. When the central control unit MCU in the wiper control module 2 receives the compensation instruction node information, it will perform a CRC check value verification. If the input compensation information check value is inconsistent with the CRC check value in the software, the scraping angle compensation program will not be executed. If the CRC check passes, the compensation type in the compensation instruction is judged: increase or decrease. After reading the scraping angle compensation value in the compensation instruction and judging the value, the compensation value is calculated. After checking the validity, if the compensation value is greater than X1, no compensation is performed. If the compensation value is less than X1, it is written to a specific address in the EEPROM, for example: 0x11000000, to ensure that the fluctuation of the scraping angle due to unexpected parts abnormalities is ignored. Finally, stop sending the LIN scraping angle compensation command and restore the normal LIN communication scheduling node. Each time the motor is reset and powered on, it first reads the compensation value in the compensation value storage address and sums it with the compensation. The calculated value is the scraping angle of the wiper after compensation. In this way, the intelligent adjustment of the scraping angle parameters of the wiper motor can be realized, which improves the accuracy and stability of the adjustment, while saving resources and improving production efficiency and product quality. Example

[0023] This embodiment is further improved on the basis of the embodiment 1 in that the customized content includes the compensation type instruction, the scraping angle compensation value and the CRC check value, etc.

[0024] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A wiper motor wiping angle parameter adjustment system based on LIN communication, characterized in that: include: A scraping angle detection device (1), wherein the scraping angle detection device (1) is used for inputting scraping angle compensation information; A wiper control module (2), the wiper control module (2) being used to perform wiper angle compensation; LIN communication (3), the LIN communication (3) is used to connect the wiper angle detection device (1) and the wiper control module (2) to facilitate signal processing, message distribution, monitoring of the data transmission process and its rate, and self-diagnosis.

2. A wiper motor wiping angle parameter adjustment system based on LIN communication as claimed in claim 1, characterized in that: The compensation information input by the wiper angle detection device (1) will be tested for validity after being sent to the wiper control module (2).

3. A wiper motor wiping angle parameter adjustment system based on LIN communication as claimed in claim 2, characterized in that: The wiper control module (2) is provided with a central control unit MCU for receiving compensation instruction node information. The central control unit MCU performs a CRC check value check on the received compensation instruction node information.

4. A wiper motor wiping angle parameter adjustment system based on LIN communication as claimed in claim 3, characterized in that: The program in the central control unit MCU sets the maximum compensation value to X1.

5. A wiper motor wiping angle parameter adjustment system based on LIN communication as claimed in claim 4, characterized in that: If the compensation value is greater than X1, no compensation is performed; if the compensation value is less than X1, it is written into a specific address in the EEPROM.

6. A wiper motor wiping angle parameter adjustment system based on LIN communication as claimed in claim 5, characterized in that: The basic data format of the compensation instruction meets the specification requirements of LIN communication (3), and 8 bytes of data are transmitted each time.

7. A wiper motor wiping angle parameter adjustment system based on LIN communication as claimed in claim 6, characterized in that: The functional implementation node of the LIN communication (3) is PID1.

8. A wiper motor wiping angle parameter adjustment system based on LIN communication as claimed in claim 7, characterized in that: The scraping angle compensation information of the compensation instruction is A1-A8, and the content can be customized according to needs.

9. A wiper motor wiping angle parameter adjustment system based on LIN communication as claimed in claim 8, characterized in that: The customized content includes compensation type instruction, scraping angle compensation value and CRC check value, etc.

10. The adjustment method of the wiper motor wiping angle parameter adjustment system based on LIN communication according to claims 1-9, characterized in that: The following steps are involved: S1, inputting compensation information to a wiper control module (2) through a wiper angle detection device (1) of a wiper production line; S2, the wiper control module (2) checks the validity of the compensation command; S3. After the compensation instruction is verified, the compensation program is executed.

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