Sleep control system and method of vehicle controller

Abstract

The invention discloses a sleep control system and method of a vehicle controller. The sleep control system of the vehicle controller comprises a power interface, an MCU (Microprogrammed Control Unit), a working module, a wake-up source and an SBC (System Basis Chip), wherein the SBC comprises an external wake-up source input module and a voltage stabilizing module, the external wake-up source input module is connected with the wake-up source, the input end of the voltage stabilizing module is connected with the power interface, and the output end of the voltage stabilizing module is connectedwith the MCU; and the wake-up source is also connected to the MCU. According to the invention, an SBC is introduced into the sleep control system, and because the SBC integrates a voltage stabilizerand an external wake-up source input module, the circuit design is greatly simplified, and the cost is reduced; in addition, by using a wake-up function of the external wake-up source input module onthe SBC, when the system sleeps, the power supply of all modules except the SBC is turned off, and only part of the functions of the SBC are retained, thus greatly reducing the static power consumption of the system without affecting the response time of the system to external signals.

Description

Technical field [0001] The present invention relates to the technical field of vehicle controllers, and more specifically, to a sleep control system and method of a vehicle controller. Background technique [0002] In recent years, automobiles have become more and more automated and intelligent, so there are more and more controllers in automobiles. In order to improve the response speed of the controller on the car and still be able to judge and respond to user commands or car status after the car is turned off, their power supply will be directly connected to the car battery. After the car is turned off, these controllers will enter a dormant state to reduce their power consumption, but they will still consume the power of the car battery. Due to the large number of controllers, long-term consumption will cause the battery to lose power and cause the car to fail to ignite normally. start up. [0003] In order to make the on-board battery as long as possible after the car is tur...

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Problems solved by technology

In this way, the sleep current of the entire controller will be relatively large, which cannot meet the requirements.

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