摘    要

测试系统技术是在微电子与计算机技术相结合的基础上产生的一门新型学科。随着电子技术的发展及其在各方面的应用日益广泛，对电子测量和电子仪器系统提出越来越高的要求。 [来源：http://www.think58.com]

本文首先讨论了现有电子测试系统的发展趋势和现状，鉴于在一些对测试要求不是很高的环境下，许多能够采用的测试仪器功能单一、价格昂贵以及使用不便的情况，设计研究了以STC89C52单片机为主控制芯片的多功能模块化测试系统，使一些中低端用户能够方便的采用自己所需的测试功能，而且本设计在成本方面较为低廉。

主要研究工作为：根据单片机测试系统的设计原则，提出设计方案，构建总体硬件方案和完成系统所需的器件的选择；根据测试系统的要求，设计了应用较为广泛的几个测量模块的硬件设计，包括：信号发生、温度实时测量、液位检测和转速测量四个子模块。 [资料来源：www.THINK58.com]

本系统具有一定的测试精度，实现了四种测试功能。信号模块能产生频率较宽的正弦波、三角波、方波；温度模块采用DS18B20温度传感器，能在-55摄氏度至+125摄氏度范围内较为精确的进行温度测量；液位测量模块为针对需对液位进行精密测量的环境进行而设计的，精度可达0.1mm；转速测量模块则能实现对转轴的高速范围精确测量。

[资料来源：www.THINK58.com]

本文在硬件设计基础上，对系统进行了软件程序设计，结合TX-1C型开发板与Keil51软件的uVision2集成环境对系统软件进行编译、调试。最后完成了整个系统的软硬件设计，且完成了温度测量模块的实物设计，对转速测量模块进行了基于proteus的软硬件仿真。 [来源：http://think58.com]

[资料来源：THINK58.com]

关键词：STC89C52；单片机；信号发生；温度测量；液位检测；转速测量；测试系统

[资料来源：THINK58.com]

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论文类型：应用研究 [来源：http://www.think58.com]

Abstract

Test systems technology are a new discipline that generated from the combination of   microelectronics and computer technology. With the development of electronic technology and its application in all aspects of the increasingly widespread, electronic measurement and electronic devices is getting higher and higher system requirements.

This article first discusses the existing electronic test system development trends and the status quo. in view of low testing demands, the single function, higher price and inconvenient characteristics of many test instruments employed, the multi-functional modularized test system, which took single chip microcomputer STC89C52 as main control chip, easy to adopted some functions the ordinary users needed and possessed lower costs, was researched and designed. [资料来源：http://THINK58.com]

The main research contents are as follows: the design scheme was proposed, the overall hardware blue print was composed, and the devices the system needed were selected according to design principle of single chip microcomputer test system; the hardware design scheme of some measurement modules widely used, were devised on the basis of requirements for test system, such as signal generating, real-time temperature monitoring, liquid level measurement and rotating speed measurement modules; on the basis of hardware design, the system software design was performed, and the compiling, debugging and simulation were conducted combining with Type TX-1C development computer and IDE (Integrated development Environment) uVision2 of software Keil51. [资料来源：http://think58.com]

The system has a certain degree of measurement accuracy, It has four testing functions. Signal module can generate a wide frequency sine wave, triangle wave, square wave; temperature module using DS18B20 temperature sensor that can be -55 degrees Celsius to +125 degrees Celsius within the scope of a more precise temperature measurement; The Level Measurement Module is designed for a precise measurement of liquid level environment, it’s accuracy up to 0.1mm; Speed measurement modules can accurately measure the range of high-speed shaft. combination of TX-1C  board and Keil51 [资料来源：THINK58.com]

In this system , software design based on hardware design and it’s software has been compiling, debugging. The hardware and software of entire system are designed in the final. Temperature measurements module has completed the physical design.and the software and hardware of  Speed measurement module has simulated based on proteus. [来源：http://think58.com]

Key Words：STC89C52；Single-chip microcomputer；Signal generating；temperature measurement；liquid level detection; rotational speed measurement；test system

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