电阻电容电感测试仪的设计（毕业设计）.doc
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电阻电容电感测试仪的设计（毕业设计）,电阻电容电感测试仪的设计（本文共8155字，18页，介绍了一种基于单片机(89c51)的高精度电阻电感电容测量仪器的设计，推荐相关专业参考学习）摘要本文介绍了一种基于单片机(89c51)的高精度电阻电感电容测量仪器的设计.本设计采用max038单片压控函数发生器产生高精度的正弦波信号流经待测的电容或者电感和标准电阻的串...
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电阻电容电感测试仪的设计
（本文共8155字，18页，介绍了一种基于单片机(89C51)的高精度电阻电感电容测量仪器的设计，推荐相关专业参考学习）
摘 要
本文介绍了一种基于单片机(89C51)的高精度电阻电感电容测量仪器的设计.本设计采用MAX038单片压控函数发生器产生高精度的正弦波信号流经待测的电容或者电感和标准电阻的串连电路,通过测量电容或者电感和标准电阻各自的电压,利用电压比例计算的方法推算出电容值或者电感值.本设计利用51单片机控制测量和计算结果,采用1602液晶模块实时显示数值.主要包括正弦信号发生器,标准电阻和电感或电容串联分压电路,多路开关,电压跟随器,高精度交流有效值转换芯片,A/D转换芯片,单片机,显示模块,键盘模块等部分,具有手动调节量程,通过单片机自动检测分析识别原件性质并通过LCD形象地显示出来,正弦信号发生器可以实现幅值和频率的调整,为了提高精度我们把被测的交流电压先通过ICL7650来消除因为AD637输入电阻较低带来的误差.实验测试结果表明,本设计性能稳定,测量精度高.
关键词：电压比例法 89C51 AD637 电阻电感电容测量 1602液晶模块
ABSTRACT
The paper introduced the design of a microcontroller (89C51)-based high-precision resistor inductance capacitance measuring instruments. This design uses MAX038 monolithic voltage-controlled function generator to produce high-precision sine wave signal through the test of the capacitance or inductance, and the standard resistance series circuit, figure out by measuring the capacitance or inductance, and the standard resistance of the respective voltage, using the method of calculation of the voltage ratio of the capacitance or inductance value. This design uses 51 microcontroller to control the measurement and calculation results, the 1602 LCD modules real-time display values include sinusoidal signal generator, the standard resistance and inductance or capacitance in series voltage divider circuit, multi-channel switch, voltage follower, high-precision AC /Converts the value of the chip, the A / D conversion chip, microcontroller, display module, keyboard module, and other parts, with manual adjustment range by a single-chip automatic detection analysis to identify the original nature of the image through the LCD display, the sinusoidal signal generator can be achieved amplitude andfrequency adjustment, in order to improve the accuracy of the measured AC voltage through the ICL7650 and to eliminate the error caused by the AD637 input resistance lower. experimental test results show that this design, stable performance, high measurement accuracy.
Key words: the voltage ratio method; 89C51; ad637; resistor inductance capacitance measurement; 1602 LCD module
目 录
1 引言 1
2 电压比例法测量原理 1
3 系统方案 2
3.1系统总体方案设计与结构框图 2
3.2方案设计与论证 3
4 硬件电路 5
4.1稳压电源模块 5
4.2正弦信号发生器 5
4.3采样电路 6
4.3液晶显示模块 6
5 系统软件设计 7
5.1控制测量程序模块 7
5.2 按键处理程序模块 8
5.3电阻电感电容计算程序 9
5.4液晶显示程序模块 9
6 系统测试与结果分析 10
6.1对正弦信号源的测试 10
6.2对电阻电容电感的测量 10
6.3误差分析 11
7 总结 12
参 考 文 献 13
致 谢 14
（本文共8155字，18页，介绍了一种基于单片机(89C51)的高精度电阻电感电容测量仪器的设计，推荐相关专业参考学习）
摘 要
本文介绍了一种基于单片机(89C51)的高精度电阻电感电容测量仪器的设计.本设计采用MAX038单片压控函数发生器产生高精度的正弦波信号流经待测的电容或者电感和标准电阻的串连电路,通过测量电容或者电感和标准电阻各自的电压,利用电压比例计算的方法推算出电容值或者电感值.本设计利用51单片机控制测量和计算结果,采用1602液晶模块实时显示数值.主要包括正弦信号发生器,标准电阻和电感或电容串联分压电路,多路开关,电压跟随器,高精度交流有效值转换芯片,A/D转换芯片,单片机,显示模块,键盘模块等部分,具有手动调节量程,通过单片机自动检测分析识别原件性质并通过LCD形象地显示出来,正弦信号发生器可以实现幅值和频率的调整,为了提高精度我们把被测的交流电压先通过ICL7650来消除因为AD637输入电阻较低带来的误差.实验测试结果表明,本设计性能稳定,测量精度高.
关键词：电压比例法 89C51 AD637 电阻电感电容测量 1602液晶模块
ABSTRACT
The paper introduced the design of a microcontroller (89C51)-based high-precision resistor inductance capacitance measuring instruments. This design uses MAX038 monolithic voltage-controlled function generator to produce high-precision sine wave signal through the test of the capacitance or inductance, and the standard resistance series circuit, figure out by measuring the capacitance or inductance, and the standard resistance of the respective voltage, using the method of calculation of the voltage ratio of the capacitance or inductance value. This design uses 51 microcontroller to control the measurement and calculation results, the 1602 LCD modules real-time display values include sinusoidal signal generator, the standard resistance and inductance or capacitance in series voltage divider circuit, multi-channel switch, voltage follower, high-precision AC /Converts the value of the chip, the A / D conversion chip, microcontroller, display module, keyboard module, and other parts, with manual adjustment range by a single-chip automatic detection analysis to identify the original nature of the image through the LCD display, the sinusoidal signal generator can be achieved amplitude andfrequency adjustment, in order to improve the accuracy of the measured AC voltage through the ICL7650 and to eliminate the error caused by the AD637 input resistance lower. experimental test results show that this design, stable performance, high measurement accuracy.
Key words: the voltage ratio method; 89C51; ad637; resistor inductance capacitance measurement; 1602 LCD module
目 录
1 引言 1
2 电压比例法测量原理 1
3 系统方案 2
3.1系统总体方案设计与结构框图 2
3.2方案设计与论证 3
4 硬件电路 5
4.1稳压电源模块 5
4.2正弦信号发生器 5
4.3采样电路 6
4.3液晶显示模块 6
5 系统软件设计 7
5.1控制测量程序模块 7
5.2 按键处理程序模块 8
5.3电阻电感电容计算程序 9
5.4液晶显示程序模块 9
6 系统测试与结果分析 10
6.1对正弦信号源的测试 10
6.2对电阻电容电感的测量 10
6.3误差分析 11
7 总结 12
参 考 文 献 13
致 谢 14
