Design of car reversing radar based on LIN bus This design is based on the above application background. Compared with the traditional single reversing system, this system has strong advantages in compatibility and car wiring. At the same time, compared with the mainstream CAN bus, it has considerable advantages in cost and stability. Therefore, LIN bus, as a supplement and auxiliary bus of CAN bus, will definitely receive more extensive attention in low-end application scenarios such as reversing radar. With the development of automobile testing technology and the improvement of people\'s requirements for automobile quality, the number of various sensors on automobiles has shown a rapid growth trend. Traditional test electronic units do not have network communication capabilities, which makes the wiring on the car face serious challenges when the number of these electronic units increases to a certain extent. Therefore, with the continuous development of the automobile industry, the automotive field bus is receiving more and more attention at home and abroad. There are many fieldbuses used in automobiles, including Profibus, RS485, CAN and LIN buses. However, since the German Bosch company developed the fieldbus CAN in the mid-1980s, it has developed rapidly and received widespread attention. It has been widely promoted and applied worldwide. In Europe, it has promoted the CAN standard ISO-11898-1 with a speed between 47.6 and 125Kb/s since 1992. In the following years, it eliminated the traditional SAE J1850 communication protocol and actively responded to the development of CAN bus. It can be said that CAN bus has become the mainstream of automobile bus. However, due to the complex arbitration mechanism of the CAN bus, its production cost in low-end occasions has been challenged. In addition, its stability in the field of automobile use is also insufficient compared with some buses that do not use the competition mechanism. It is for these reasons that while CAN has become the mainstream bus of automobiles, another bus specifically used in low-end occasions, LIN, has received widespread attention. It adopts a single-master-multiple-slave communication method to avoid the cost and overhead caused by competition. The slave nodes can synchronize themselves without a crystal oscillator, so its hardware is extremely simple. In addition, its 1K~20Kb/s bit rate can meet the needs of most low-end applications, so it is regarded as one of the most promising buses. This design is designed based on the above application background. Compared with the traditional single reversing system, this system has strong advantages in compatibility and automotive wiring. At the same time, compared with the mainstream CAN bus, it has considerable advantages in cost and stability. Therefore, the LIN bus, as a supplement and auxiliary bus to the CAN bus, will definitely receive more widespread attention in low-end application scenarios such as reversing radar.
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