An intelligent braking system integrating wheel speed sensor analysis and signal transmission

Abstract

The invention provides an intelligent braking system integrating wheel speed sensor analysis and signal transmission, which relates to the field of intelligent control of automobile braking, including a wheel speed signal acquisition module, and an intelligent brake controller hardwired to the wheel speed signal acquisition module , a motor hard-wired to the smart brake controller; an ABS ECU hard-wired to the smart brake controller; the wheel speed signal acquisition module is used to collect four-way wheel speed signals; the smart brake controller includes Wheel speed analysis chip, rack displacement calculation module, signal processing module, and motor drive circuit; the present invention collects the wheel speed by itself when the ABS anti-lock function of the vehicle fails by analyzing the signal of the wheel speed sensor. Signal, when any wheel has a locking tendency, decompress all wheels to prevent the wheel from locking, realize vehicle deceleration while ensuring vehicle stability, and can realize CAN bus data sharing.

Description

technical field [0001] The invention relates to the field of intelligent control of automobile braking, in particular to an intelligent braking system integrating wheel speed sensor analysis and signal transmission. Background technique [0002] For high-level driving assistance systems, failure backup needs to be implemented, that is, when a single ABS failure occurs in the vehicle, the vehicle can still be pulled over safely through the deceleration path. The realization of this function, in addition to the necessary sensor redundancy, bus redundancy and power supply redundancy, for the intelligent braking system, it is necessary to realize the redundancy of vehicle anti-lock braking. [0003] The conventional servo braking function can be directly backed up by the ESC and the intelligent braking system, but for the vehicle ABS anti-lock function, the traditional vehicle can only be realized by the ABS ECU, that is, the ABS ECU obtains the wheel relative to the vehicle by ...

AI Technical Summary

Problems solved by technology

[0003] The conventional servo braking function can be directly backed up by the ESC and the intelligent braking system, but for the vehicle ABS anti-lock function, the traditional vehicle can only be realized by the ABS ECU, that is, the ABS ECU obtains the wheel relative to the vehicle by collecting the wheel speed signal. However, once the ABS ECU fails, the vehicle will lose this function; in order to achieve redundant backup of ABS functions, the intelligent braking system must be able to independently collect, analyze, and transmit Wheel speed signal without relying on CAN bus data to achieve fast vehicle anti-lock braking

Images