Then , we design a networking data acquisition system that makes use of 51 - mcu , nic of ethernet , a / d converter and relative peripheral interface circuit . it can be linked the internet through the ethernet . on software , we simplify tcp / ip suit , including udp , icmp , ip and arp , made it run in 8 - bit mcu , to implement the remote data acquisition 在此基础上,设计了一个网络化单片机数据采集系统,它利用51mcu 、以太网络接口芯片、 a d转换器和相关外围接口电路实现系统的硬件架构,该系统能通过以太网接入internet ;软件上,根据8位单片机本身资源有限的特点,精简了tcp ip协议族,包括udp 、 icmp 、 ip 、 arp ,使之运行在8位单片机上,实现了远程数据采集。
The single - chip microcomputer control technology has been applied in the system to carry out monitoring and protective functions for the asynchronous motors controlled . combined with suitable peripheral interface , disposition and flexible software , the mcs can measure the current and voltage signals of the motors . based on the measurements , the computation , judgment and decision are made to implement the phase sensitive short circuit , overload , supply over - voltage , supply under - voltage , over - thermal , leakage lock - out and loss of phase protective function 系统采用单片机控制技术,完成所控制电动机的控制功能,并对所控制电动机的电压、电流等信号进行检测、计算、判断和处理,实现短路、断相、过载、欠压、过压、过热、漏电闭锁等保护功能,并提供本质安全型输入、输出接口,能与煤矿井下监测监控系统联网运行。