摘要
为克服传统校验方法的不足,简化自动化测试设备的面板设计和校验过程,基于单片机技术和RS-422通信接口,设计了一种程控多路宽电压通道切换电路。介绍了电路工作原理、元器件选择、软硬件设计过程。该电路已经在多台测试设备的校验环节得到应用,工作性能稳定。
In order to overcome the shortage of the traditional calibration method, to simplify the panel design and calibration process of automated test equipments, a program-controlled multiplexed channel switch circuit with wide range input voltage is de-signed based on single-chip microcomputer technology and RS-422 communication interface. Working principle of circuit, choice of components, hardware and software design process are introduced. The circuit has been applied to some test equipments, and runs normally.
出处
《电脑与电信》
2014年第3期29-30,共2页
Computer & Telecommunication
基金
河南省教育厅自然科学研究项目
项目编号:13A510263
关键词
程控
单片机
模拟开关
RS-422
program-controlled
single-chip microcomputer
analog switch
RS-422
