柴油机喷油器喷油规律测控系统的实现

The Embedded System for Obseruation Injection Rule of the Diesel Engine Fuel Oil System

本文依据W.Zeuch原理,阐述一套测控喷油器喷油规律的嵌入式系统,基于ARM Xscale架构的PXA270为MCU,以扩展FPGA为数据采集与控制的电路,运用ARM-Linux操作系统,设计一款数据测量与控制的嵌入式系统。软件方面:系统采用具有可抢占型的Linux2.6.11内核,作为应用程序运行的平台。以GTK方式的GUI图形系统为基础,编写具有图形化操作界面的数据采集与系统控制系统。硬件方面,通过PXA270核心板的总线扩展,以总线接口方式,设计以FPGA为核心的扩展电路,与PXA270建立通讯,实现多路模拟量数据采集、模拟量输出控制、开关量信号的输出。PXA270(MCU)负责进行采集后数据分析、处理、以及LCD的图形显示任务。

The main work done in this paper is as the following, This article Elaborates a embedded system which observation injection rule of the Diesel engine fuel oil system, it based on ARM-Linux operating system, Use the XScale structure PXA270 and FPGA as the master control unit and multi-channel A/D sampling card, realization multi-channel simulation quantity sampling, completes the multi-channel simulation quantity data acquisition, the transmission, the data analysis, processing fast, and the LCD graphical display part software design.