A method for zero calibration of automobile angle sensor

Abstract

The invention provides a method for calibrating the zero position of a steering angle sensor of a vehicle, which is simple to operate, is free from re-calibrating the zero position after the storage battery of the vehicle is powered-off. The technical scheme adopted by the invention is that the method for calibrating the zero position of the automobile steering angle sensor of the vehicle comprises the following steps: 1, carrying out four-wheel position to the vehicle, and positioning a steering wheel in a central position; 2, connecting zero position calibration equipment and a vehicle-mounted diagnose interface; 3, transmitting zero position calibration information to the steering angle sensor through the vehicle-mounted diagnose interface, wherein the steering sensor acquires the zeroposition calibration information and completes the zero position calibration, and the steering angle sensor is positioned in a powered-on state; and 4, completing the calibration, pulling out the diagnose interface and turning off a power supply. According to the processing method provided by the invention, operation personnel on a production line only need to carry out simple operation to the equipment, so the complexity and the time consumption of the manual operation can be reduced, simultaneously, the zero position re-calibration is free after the storage battery of the vehicle is powered-off, and more convenience is brought to users and the production of plants.

Description

technical field [0001] The invention relates to the field of automobile automation, in particular to a method for zero calibration of an automobile corner sensor. Background technique [0002] With the development of automotive electronic technology, people have higher and higher requirements for vehicle safety and comfort, and the number of vehicle electronic control units is also increasing. At present, foreign automotive electronics have been widely used in automobiles, accounting for 60%-70% of the entire vehicle price in some high-end vehicles. [0003] The popularization and application of electronic products makes many controllers of automobiles (such as electronic stability program system, adaptive headlight system, electronic suspension system) need steering wheel angle signal input. Usually, the corner sensor needs zero calibration after the installation of the whole vehicle is completed before it can be used normally. The zero calibration method is to turn the s...

AI Technical Summary

Problems solved by technology

This method has disadvantages: ① Calibrating the corner sensor on the production line is completely manual operation, which is time-consuming, delays the time on the production line, and causes waste of manpower and time; ② After the zero position calibration of the corner sensor is completed, if the car When the battery is powered off, the signal from the angle sensor will be an invalid value, and it needs to be re-calibrated in this way.