基于改进型窗口比较器的多级输入状态检测与逻辑判断电路设计  

Design of Multiple-Input Voltage Status Test and Logical Judgment Based on the Advanced Window Comparator

作　　者：刘加松 宋玉宏[1] 周捷信[1] LIU Jia-song;SONG Yu-hong;ZHOU Jie-xin(Shunde Polytechnic,Foshan 528300,China)

机构地区：[1]顺德职业技术学院,广东佛山528300

出　　处：《通信电源技术》2019年第4期64-68,70,共6页Telecom Power Technology

基　　金：广东省自然科学基金(2017A030310640);佛山市创新项目(2016AP100413)

摘　　要：当以电压信号作为系统输入时,需检测输入电压的状态,从而做出判断,以便根据结果及时响应。当检测到输入电压异常即为欠压或过压时,系统需停止运行或自动实施保护。多电压等级输入时也是同样的道理,任何一路输入处于异常,都需要启动相应的保护措施。就多级输入逻辑判断而言,目前常用微控制器通过软件设计实现检测和处理功能,存在响应滞后、成本高等缺点。因此,根据常规多限窗口电压比较器电路,经过改进,采用直接的硬件电路,实现多输入电位逻辑判断的功能。最后,通过仿真和实验,验证了该设计方案的可行性。The input status of a system is required to judge in order to respond or feedback by itself.As a input,the voltage has three possible statuses such as under-voltage,over-voltage and the normal one.Once the status of under-voltage or over-voltage is tested,the system should break running or protect itself.Multiple-input system operates on the same situation whichever is under-voltage or over-voltage.For multiple-input,the logical judgment is conducted by a Microcontroller,which has the response lag and high-cost.This paper proposes the design of multiple-input logical judgment based on the hardware,which is verified by simulation and experimental test.

关 键 词：多输入 电位逻辑判断 电压窗口比较器 MULTISIM仿真 

分 类 号：TN702[电子电信—电路与系统]