电容电感测试仪论文.doc

电容电感测试仪论文 摘 要 随着电子工业的发展，电子元器件急剧增加，电子元器件的适用范围也逐渐广泛起来，在应用中我们常常要测定电阻，电容，电感的大小。因此，设计可靠，安全，便捷的电阻，电容，电感测试仪具有极大的现实必要性。 在系统硬件设计中，以MCS-51单片机为核心的电阻、、 关键词：单片机，555多谐振荡电路，LED动态显示模块，电容三点式振荡 ABSTRACT With the development of electronic industry，electronic components rapidly increased the scope of electronic components widely up gradually，in applications we often measured resistors，capacitors，inductors size. Therefore,the design of reliable，safe，convenient resistance，capacitance，inductance tester of great practical necessity. In the system hardware design，take the MCS-51 monolithic integrated circuit as the core resistance，the electric capacity，the inductance reflectoscope reflector，the resistance，the electric capacity，the inductance，the use correspondences oscillating circuit transforms for the frequency realizes each parameter survey.And the resistance and the electric capacity are use 555 multiresonant circuits to produce，but the inductance is produces according to the electric capacity bikini，the oscilation frequency will send AT89C52 the counting to be neat，through and fixed time counts may calculate by the frequency measurement rate，figures out again through this frequency meter is measured the parameter. In systems software design is take Keil51 as the simulation platform，used the C language and the assembly language mix programming has compiled the system application software；including master routine module，display module，resistance test module，electric capacity test module and inductance test module. Finally，the actual production of a prototype，tested in the laboratory results show that the prototype of the functions and indicators are the design requirements. KEY WORDS: Single slice of machine，555 resonance swings circuit，LED dynamic display module，Capacitance three-point shock 目 录 1 前言 1 1.1 设计的背景及意义 1 1.2 电阻、电容、电感测试仪的发展历史及研究现状 1 1.3 本设计所做的工作 3 1.4 本论文的结构安排 3 2 电阻、电容、电感测试仪的系统设计 5 2.1 电阻、电容、电感测试仪设计方案比较 5 2.2 系统的原理框图 5 3 电阻、电容、电感测试仪的系统硬件设计 7 3.1 MCS-51单片机电路的设计 7 3.2 L