摘要
在现代电喷汽车中,发动机ECU是动力控制核心,它控制着燃油喷射与电子点火两个子系统,其采样信号来自汽车各种传感器。这些传感器将车辆的实时信号传送给发动机大脑ECU,ECU收到这些采样信号以后会分析计算与比较,并给出修正量,以控制下一个工作循环。这这样的循环持续在发动机的工作过程进行,不断的调整发动机的点火与喷油,使发动机工作状态达到最佳。该设计主要就是采用数据采集的方式,以单片机为主体。单片机应用系统是指以单片机为核心,配以一定的外围电路和软件,能实现某种或几种功能的应用系统。它由硬件部分和软件部分组成。一般来说,应用系统所要完成的任务不同,相应的硬件配置和软件配置也就不同。因此,单片机应用系统的设计应包括硬件设计和软件设计两大部分。为保证系统能可靠工作,在软件,硬件的设计中,还要考虑其抗干扰能力,有关系统的抗干扰设计。本文从硬件设计方面着手介绍。
In modern EFI cars,the engine ECU is the core of power control.It controls the two subsystems of fuel injection and electronic ignition.Its sampling signals come from various sensors of the car.These sensors transmit the real-time signals of the vehicle to the engine brain ECU.After the ECU receives these sampled signals,it will analyze,calculate and compare,and provide corrections to control the next working cycle.This cycle continues in the working process of the engine,constantly adjusting the ignition and fuel injection of the engine to achieve the best working condition of the engine.This design mainly adopts the method of data acquisition,with single-chip microcomputer as the main body.The singlechip application system refers to an application system that takes the single-chip as the core and is equipped with certain peripheral circuits and software to realize one or several functions.It consists of a hardware part and a software part.Generally speaking,the tasks to be completed by the application system are different,the corresponding hardware configuration and software configuration are also different.Therefore,the design of the microcontroller application system should include two major parts:hardware design and software design.In order to ensure that the system can work reliably,in the design of software and hardware,its anti-jamming capability and the anti-jamming design of the relevant system should also be considered.This article starts from the hardware design.
出处
《时代汽车》
2020年第21期121-123,共3页
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关键词
控制系统
硬件设计
control system
hardware design