基于MSP430单片机的ρ值测试仪设计与应用  

Design and application of instruments for time-ratio value ρ based on MSP430

作　　者：喻旭东[1,2] 滕召胜[2] 

机构地区：[1]益阳市计量测试检定所,湖南益阳413000 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《中国测试》2010年第3期57-59,共3页China Measurement & Test

摘　　要：针对时间比例调节仪表的时间比值ρ测量过程中需人工控制,准确度低的情况,采用TI公司生产的单片机MSP430F449最小系统设计并实现了一种结构简单检测迅速的ρ值测试仪。介绍了ρ值测试的原理,重点讨论了仪器的硬件结构和软件实现流程,仪器由单片机最小系统、时钟模块、人机接口模块、通信电路等组成。通过实验测量表明,系统测量工作可靠,有良好的测量准确度。The measurement processing of the rate of time-ratio value ρ of the time proportional control instrument requires manual control with low precision. Aimed at this situation,a new type instrument of simple structure and rapid test for ρ value was designed and implemented using the minimum system based on MCU MSP430F449 produced by TI. This paper introduces the testing principle of ρ value and focuses on the hardware structure of instrument and the software flow chart. The instrument consists of a single chip microcomputer minimum system, the clock module,the man-machine interface module,the communication circuit and so on. The result shows that the operation of system measurement is reliable and of high accuracy with the experiment.

关 键 词：测试计量仪器 ρ值测试仪 嵌入式系统 MSP430单片机 DS1302芯片 

分 类 号：TM935.1[电气工程—电力电子与电力传动] TP274[自动化与计算机技术—检测技术与自动化装置]