Electric seat controller with protection function and control method thereof

Abstract

The invention relates to an electric seat controller with a protection function, and solves the defects in the prior art. The technical scheme is that the electric seat controller comprises a power module, a processor module, a motor driving module, a signal amplification module, a motor hardware protection module, a motor position detection module, a switch module, a CAN communication module anda current sampling module. The processor module is used for receiving and processing a switching control signal, a communication signal and a diagnosis signal, and the motor position detection moduleis used for acquiring motor motion position information and detecting motor stalling. The motor driving module is used for controlling the working state of a seat motor; the current sampling module converts a current signal of the motor into a voltage signal; the signal amplification module amplifies a voltage signal of the motor, so that the voltage signal can be acquired and processed by the processor; and the motor hardware protection module automatically controls the motor to stop when the acquired voltage of the motor is greater than a protection threshold designed by hardware. Two protection circuit schemes of the motor hardware protection module and the signal amplification module are adopted, which achieves the complementation on functions. Moreover, the failure of one protection circuit cannot cause the failure of the other protection circuit, and the single-point failure modes are reduced.

Description

technical field [0001] This patent relates to automobile electric seat equipment, in particular to an electric seat controller with protection function and a control method thereof. Background technique [0002] With the continuous improvement of living standards and automobile intelligence, people's configuration of travel tools is getting higher and higher. In order to meet the comfort of customers, many car manufacturers have adopted the automatic adjustment seat control scheme with memory function, which is fully automatic adjustment without manual participation; There are higher and higher requirements. When the seat motor has faults such as stall and overcurrent that affect functional safety, it is necessary to stop the motor operation and report the fault in time to prevent the occurrence of safety accidents. [0003] Chinese patent application number: 201820931913.9, application date: 2018.06.15, authorized public number CN208745795 U, a car seat control system, whi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of slow switching speed and single-point failure in the above-mentioned prior art when the seat motor is blocked and over-current and other faults that affect functional safety, stop the motor running in time and report the fault , providing an electric seat controller with a protection function and a control method thereof

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