高压看门狗定时器提升汽车安全系统

摘要：随着电子系统的许多在机械功能采取的汽车范围从发动机正转向和制动，是关于容错的日益关注。不应该有一个单点故障会阻止一辆车至少“一瘸一拐”偏离了道路，或到就近的服务站。用于重新路由信号，并执行其他功能，以确保车辆可以安全地使其偏离了道路发生故障时的冗余系统，看门狗定时器，和其他控制电路。

Maxim > Design Support > Technical Documents > Application Notes > Circuit Protection > APP 4210
Keywords: limp home, fault tolerance, high voltage, watchdog timer, ECU, automotive safety, redundant system

Jan 05, 2012
APPLICATION NOTE 4210

High-Voltage Watchdog Timers Enhance Automotive System
Safety
By: Robert Regensburger, Automotive Specialist, Automotive Product Definitions, Maxim Integrated Products, Germany
Jan 05, 2012

Abstract: As electronic systems take over many of the mechanical functions in a car―ranging from engine timing to steering and
braking―there is a growing concern about fault tolerance. There should not be a single point of failure that would