Electronic steering column lock control device and control method thereof

Abstract

The invention provides an electronic steering column lock control device and a control method of the electronic steering lock control device. According to the electronic steering column lock control device and the control method of the electronic steering lock control device, the double-controller control mode that a passive-entry passive-start system and a vehicle body controller are adopted to jointly conduct control in the prior art is abandoned, and a single-controller (the passive-entry passive-start system) double-micro-control-unit control mode is adopted. Driving signals sent by two micro control units and non-driving signals sent by the non-driving signal output end in a vehicle jointly control power input of an electronic steering column lock through 'AND' logic; in the actual using and operating process, if the first micro control unit or the second micro control unit fails, or input of the non-driving signals is valid (high level), an AND gate driving circuit will not supply power signals to the electronic steering column lock; accordingly, the electronic steering column lock control device not only lowers the cost of wiring harnesses and omits the information interaction process between the controllers, but also enhances the control safety.

Description

technical field [0001] The invention relates to the field of circuit design, in particular to an electronic steering column lock control device and a control method thereof. Background technique [0002] The electronic steering column lock ESCL control function of the current vehicle equipped with the keyless entry and start system PEPS is generally jointly controlled by the keyless entry and start system PEPS and the body controller BCM. figure 1 It is a structural schematic diagram of the electronic steering column lock control device in the prior art, such as figure 1 As shown, for the electronic steering column lock ESCL, to control it to execute the locking action, the body controller BCM needs to give a signal on the lock enable signal Lock enable line, and the keyless entry and start system PEPS is connected to the serial communication network. LIN communicates with the electronic steering column lock ESCL, and the micro control unit MCU in the keyless entry and star...

AI Technical Summary

Problems solved by technology

This ESCL control mode uses the keyless entry and start system PEPS and the body controller BCM to jointly control, which increases the cost of the wiring harness, and the two controllers of the keyless entry and start system PEPS and the body controller BCM The complexity of the interactive information between the electronic steering column lock ESCL and the power signal Power received by the electronic steering column lock and the enable signal Lock enable are provided by a single module, resulting in poor control security

Images