基于單片機(jī)的電阻、電容、電感測(cè)試儀

1、基于單片機(jī)的電阻、電容、電感測(cè)試儀_畢業(yè)論文摘 要隨著電子工業(yè)的發(fā)展，電子元器件急劇增加，電子元器件的適用范圍也逐漸廣泛起來，在應(yīng)用中我們常常要測(cè)定電阻，電容，電感的大小。因此，設(shè)計(jì)可靠，安全，便捷的電阻，電容，電感測(cè)試儀具有極大的現(xiàn)實(shí)必要性。在系統(tǒng)硬件設(shè)計(jì)中，以MCS-51單片機(jī)為核心的電阻、電容、電感測(cè)試儀，將電阻，電容，電感，使用對(duì)應(yīng)的振蕩電路轉(zhuǎn)化為頻率實(shí)現(xiàn)各個(gè)參數(shù)的測(cè)量。其中電阻和電容是采用555多諧振蕩電路產(chǎn)生的，而電感則是根據(jù)電容三點(diǎn)式產(chǎn)生的，將振蕩頻率送入AT89C52的計(jì)數(shù)端端，通過定時(shí)并且計(jì)數(shù)可以計(jì)算出被測(cè)頻率，再通過該頻率計(jì)算出被測(cè)參數(shù)。在系統(tǒng)的軟件設(shè)計(jì)是以Keil51為仿

2、真平臺(tái)，使用C語(yǔ)言與匯編語(yǔ)言混合編程編寫了系統(tǒng)應(yīng)用軟件；包括主程序模塊、顯示模塊、電阻測(cè)試模塊、電容測(cè)試模塊和電感測(cè)試模塊。最后，實(shí)際制作了一臺(tái)樣機(jī)，在實(shí)驗(yàn)室里進(jìn)行了測(cè)試，結(jié)果表明該樣機(jī)的功能和指標(biāo)得到了設(shè)計(jì)要求。關(guān)鍵詞：?jiǎn)纹瑱C(jī)，555多諧振蕩電路，LED動(dòng)態(tài)顯示模塊，電容三點(diǎn)式振蕩I I你好IIABSTRACTABSTRACTWith the development of electronic industry，electronic components rapidly increased the scope of electronic components widely up gradua

3、lly，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 ele

4、ctric capacity，the inductance reflectoscope reflector，the resistance，the electric capacity，the inductance，the use correspondence's oscillating circuit transforms for the frequency realizes each parameter survey.And the resistance and the electric capacity are use 555 multiresonant circuits to pr

5、oduce，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

6、system's 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 mo

7、dule.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 shockIII III你好IV目

8、錄目 錄1 前言 . 11.1 設(shè)計(jì)的背景及意義 . 11.2 電阻、電容、電感測(cè)試儀的發(fā)展歷史及研究現(xiàn)狀 . 11.3 本設(shè)計(jì)所做的工作 . 31.4 本論文的結(jié)構(gòu)安排 . 32 電阻、電容、電感測(cè)試儀的系統(tǒng)設(shè)計(jì) . 52.1 電阻、電容、電感測(cè)試儀設(shè)計(jì)方案比較 . 52.2 系統(tǒng)的原理框圖 . 53 電阻、電容、電感測(cè)試儀的系統(tǒng)硬件設(shè)計(jì) . 73.1 MCS-51單片機(jī)電路的設(shè)計(jì) . 73.2 LED數(shù)碼管電路與鍵盤電路的設(shè)計(jì) . 93.3 測(cè)量電阻、電容電路的設(shè)計(jì) . 133.4 測(cè)量電感電路的設(shè)計(jì)及仿真 . 173.5 多路選擇開關(guān)電路的設(shè)計(jì) . 204 電阻、電容、電感測(cè)試儀的軟件設(shè)計(jì) . 224.1 I/O口的分配 . 224.2