基于MSP430F149的电路特性测试仪设计  

Design of a circuit characteristic tester based on MSP430F149

作　　者：张亚周 孙艳丽 任博琳 ZHANG Yazhou;SUN Yanli;REN Bolin(School of Basic Sciences for Aviation,Naval Aeronautical University,Yantai 264001,China;Team Four,Naval Aeronautical University,Yantai 264001,China)

机构地区：[1]海军航空大学航空基础学院,山东烟台264001 [2]海军航空大学学员4队,山东烟台264001

出　　处：《电子设计工程》2022年第8期6-9,15,共5页Electronic Design Engineering

基　　金：国家自然科学基金(61871392)。

摘　　要：该文介绍了一种特定放大电路特性测试仪的设计,该测试仪以MSP430F149为核心,由控制解算系统、基于AD9834 DDS芯片的信号发生模块、比例运算的信号衰减模块、AD637的幅值检波与信号采集模块、LCD显示模块等部分构成,能够完成放大电路的输入电阻、输出电阻和电压增益测量,并能完成对电阻短路或者开路、电容开路以及部分电容容量变化等元器件故障的诊断,并通过LCD模块显示测量数据和诊断结果。另外,系统还具备一键复位、LED提示功能。该测试仪输出频率调整范围宽,稳定性高,性能安全可靠,操作简单。The tester,based on MSP430F149,consists of the central controlling computing system,the signal generation module of AD9834 DDS chip,the proportional calculation section signal attenuation module,the AD637 amplitude detection signal acquisition module and some LCD display modules.It can complete the measurement of the input resistance,output resistance and voltage gain of the amplifier circuit,and complete the diagnosis of component faults such as resistance short circuit or open circuit,capacitor open circuit,and partial capacitance change,and display the measurement data and diagnosis results through the LCD module.In addition,the system also has one-key reset and LED function prompts.The tester has a wide range of output frequency adjustment,high stability,safe and reliable performance,and simple operation.

关 键 词：电路特性测试仪 输入输出电阻 MSP430F149 故障诊断 

分 类 号：TN911.7[电子电信—通信与信息系统]