基于單片機的電容電感測量系統(tǒng)設計本科論文(更新版)
【正文】 ,we often measured the size of the inductor and ,the design of reliable,safe,has a great practical necessity capacitance inductance tester convenient. This paper analyzes the method to measure the capacitance and inductance of the principle and measure the frequency of SCM,the system design of capacitance and inductance measurement using MCS51 microcontroller as the core of the oscillation circuit capacitance and inductance using the corresponding frequency into the measurement parameters to achieve instrument has the characteristics of low power consumption,high precision,easy to carry,the measured data is stored in the microcontroller,and thenthrough the LED capacitance is generated by the 555 multivibrator circuit,but the inductance is generated according to the three point design uses Keil51 as the simulation platform,the design of the measurement system software consists of main program module,display module,test module capacitance and inductance test test results show that the design of stable performance,high measurement precision. Keywords: MCS51 microcontroller。因此，設計可靠，安全，便捷的電阻，電容，電感測試儀具有極大的現(xiàn)實必要性和具有廣泛的使用價值和應用前景。 測量電感有很多的方法，有電橋法、諧振法等等，但都不能精確地讀出大小。隨著模塊化和虛擬技術的發(fā)展，為中國的測試測量儀器行業(yè)帶來了新的契機，加上各級政府日益重視，以及中國自主應用標準研究的快速進展，都在為該產業(yè)提供前所未有的動力和機遇。 5． 以 Keil51 為仿真平臺，設計測量系統(tǒng)軟件，包括主程序模塊、顯示模塊、電容測試模塊和電感測試模塊。測量范圍從pF(1012F)到幾十個 nF(109F)，并且在寄生電容的抑制和溫度穩(wěn)定性方面具有極很大的優(yōu)勢 。這里有三個數(shù)據(jù)需要特別關注。 3)、 8 位自動重裝計數(shù)方式，最大計數(shù)值為 2^8=256,定時 256 個機器周期。 本機的測量原理 本機的測量原理就是基于測量振蕩器頻
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