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This paper introduces a distributed computer monitering and controlling systembuild to meet the requirements of a high current 10MeV LIA. The system consists of amicrocomputer,three STDBUS microcomputers and BITBUS network.Here we presents the meth-od of hardware and software organization and applied module designing. 介绍了采用BITBUS、高性能微机和STD工业控制微机组成的分布式控制系统及对10MeV强流直线感应加速器实行计算机监控的研究与实践。介绍了计算机网络的构成,软硬件的设计组织方法,以及实验和试用结果。这种系统的软硬件均为模块化结构,使用灵活,易扩展,可靠性好,并能节约资金。 Based on the specific characteristics of desert oases ecosystem,its operation mechanism and de- generation monitoring are discussed,which will give a new approach for the improvement and e- cological designning of desert oases ecosystem. 荒漠绿洲生态系统的运行机制及退化的监控研究方创琳(西北师范大学地理系,兰州730070)OperationMechanismofDesertOasesEcosystemandItsDegenerationMonitoring.¥FangChuangl... In this paper the newest and the most sensitive method-the ion current methodand it’s mechanism for showing the preignition of spark plugs is produced. Though it is verydifficult that the signals of ion current and electro-ignition are shown on the fluorescent screenof oscilloscope simultaneously,the principle and design of the circuit for the device to show thesesignals are deeply discussed and the satisfactory solutions are got.The oscillographs of everyworking states of typical spark plug are given.This device... In this paper the newest and the most sensitive method-the ion current methodand it’s mechanism for showing the preignition of spark plugs is produced. Though it is verydifficult that the signals of ion current and electro-ignition are shown on the fluorescent screenof oscilloscope simultaneously,the principle and design of the circuit for the device to show thesesignals are deeply discussed and the satisfactory solutions are got.The oscillographs of everyworking states of typical spark plug are given.This device is not only a significant instrument for showing the preignition of spark plugs,but also an efficient unit for monitoring,researching and au tomatic controlling of the ignitionsystem,fuel system and combustion process of engines. 本文介绍了显示火花塞炽热点火最新颖最灵敏的方法─—离子电流法及其机理,尽管要在示波器荧屏上同时显示离子电流讯号和电点火讯号是非常困难的,但本文对这种显示装置的线路在原理和设计上作了深入探讨,取得满意的解决方案,同时还给出了所检测的典型火花塞各种工况的波形图.该装置不仅是显示火花塞炽热点火的重要工具,更可为发动机的点火系统、供油系统和燃烧过程的监控、研究和自动控制提供一种有效的手段.
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