基于Proteus的智能数字电容表的设计  

Design of digital capacitance meter with based on Proteus

作　　者：张坤[1] 张子才[2] 

机构地区：[1]河北大学工商学院,保定071002 [2]河北大学物理科学与技术学院,保定071002

出　　处：《电子测量技术》2014年第5期57-60,共4页Electronic Measurement Technology

基　　金：河北大学工商学院教学改革项目(JX201329)

摘　　要：设计了一种含有量程自动转换功能的3 1/2位的数字电容表.系统以AT89S52单片机为控制核心,以电容充电规律为测量依据,实现了对0～2μF范围内的电容值的测量.电容表的量程分为4档,通过单片机控制移位寄存器实现对测量档位的自动选择控制,读数单位采用nF,可显示小数点.在Proteus软件环境下进行了系统设计的仿真测试,仿真结果表明,电容表在有效范围内能实现电容值的自动准确测量,得到了预期的结果.This paper is designed a 3 1/2 digital capacitance meter with automatic range conversion.The AT89S52 acts the control core and measure based on the Capacitor charging rules in the system.The system can measure the capacitance values in range of 0～2tF.The capacitance meter achieve the automatic selection of the measuring use shift register by the microcontroller.The range is divided into four ranges,the units is nF and the decimal point can be displayed.The system design simulation test in Proeus software and the results shows the capacitance meter can be realized the automatic and accurate measurement in the effective range of capacitance values.

关 键 词：电容表 量程自动转换 AT89S52 PROTEUS 

分 类 号：TN06[电子电信—物理电子学]