電阻電容電感測試儀的設(shè)計（畢業(yè)設(shè)計）.doc
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電阻電容電感測試儀的設(shè)計（畢業(yè)設(shè)計）,電阻電容電感測試儀的設(shè)計（本文共8155字，18頁，介紹了一種基于單片機(89c51)的高精度電阻電感電容測量儀器的設(shè)計，推薦相關(guān)專業(yè)參考學(xué)習(xí)）摘要本文介紹了一種基于單片機(89c51)的高精度電阻電感電容測量儀器的設(shè)計.本設(shè)計采用max038單片壓控函數(shù)發(fā)生器產(chǎn)生高精度的正弦波信號流經(jīng)待測的電容或者電感和標(biāo)準(zhǔn)電阻的串...
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電阻電容電感測試儀的設(shè)計
（本文共8155字，18頁，介紹了一種基于單片機(89C51)的高精度電阻電感電容測量儀器的設(shè)計，推薦相關(guān)專業(yè)參考學(xué)習(xí)）
摘 要
本文介紹了一種基于單片機(89C51)的高精度電阻電感電容測量儀器的設(shè)計.本設(shè)計采用MAX038單片壓控函數(shù)發(fā)生器產(chǎn)生高精度的正弦波信號流經(jīng)待測的電容或者電感和標(biāo)準(zhǔn)電阻的串連電路,通過測量電容或者電感和標(biāo)準(zhǔn)電阻各自的電壓,利用電壓比例計算的方法推算出電容值或者電感值.本設(shè)計利用51單片機控制測量和計算結(jié)果,采用1602液晶模塊實時顯示數(shù)值.主要包括正弦信號發(fā)生器,標(biāo)準(zhǔn)電阻和電感或電容串聯(lián)分壓電路,多路開關(guān),電壓跟隨器,高精度交流有效值轉(zhuǎn)換芯片,A/D轉(zhuǎn)換芯片,單片機,顯示模塊,鍵盤模塊等部分,具有手動調(diào)節(jié)量程,通過單片機自動檢測分析識別原件性質(zhì)并通過LCD形象地顯示出來,正弦信號發(fā)生器可以實現(xiàn)幅值和頻率的調(diào)整,為了提高精度我們把被測的交流電壓先通過ICL7650來消除因為AD637輸入電阻較低帶來的誤差.實驗測試結(jié)果表明,本設(shè)計性能穩(wěn)定,測量精度高.
關(guān)鍵詞：電壓比例法 89C51 AD637 電阻電感電容測量 1602液晶模塊
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 錄
1 引言 1
2 電壓比例法測量原理 1
3 系統(tǒng)方案 2
3.1系統(tǒng)總體方案設(shè)計與結(jié)構(gòu)框圖 2
3.2方案設(shè)計與論證 3
4 硬件電路 5
4.1穩(wěn)壓電源模塊 5
4.2正弦信號發(fā)生器 5
4.3采樣電路 6
4.3液晶顯示模塊 6
5 系統(tǒng)軟件設(shè)計 7
5.1控制測量程序模塊 7
5.2 按鍵處理程序模塊 8
5.3電阻電感電容計算程序 9
5.4液晶顯示程序模塊 9
6 系統(tǒng)測試與結(jié)果分析 10
6.1對正弦信號源的測試 10
6.2對電阻電容電感的測量 10
6.3誤差分析 11
7 總結(jié) 12
參 考 文 獻 13
致 謝 14
（本文共8155字，18頁，介紹了一種基于單片機(89C51)的高精度電阻電感電容測量儀器的設(shè)計，推薦相關(guān)專業(yè)參考學(xué)習(xí)）
摘 要
本文介紹了一種基于單片機(89C51)的高精度電阻電感電容測量儀器的設(shè)計.本設(shè)計采用MAX038單片壓控函數(shù)發(fā)生器產(chǎn)生高精度的正弦波信號流經(jīng)待測的電容或者電感和標(biāo)準(zhǔn)電阻的串連電路,通過測量電容或者電感和標(biāo)準(zhǔn)電阻各自的電壓,利用電壓比例計算的方法推算出電容值或者電感值.本設(shè)計利用51單片機控制測量和計算結(jié)果,采用1602液晶模塊實時顯示數(shù)值.主要包括正弦信號發(fā)生器,標(biāo)準(zhǔn)電阻和電感或電容串聯(lián)分壓電路,多路開關(guān),電壓跟隨器,高精度交流有效值轉(zhuǎn)換芯片,A/D轉(zhuǎn)換芯片,單片機,顯示模塊,鍵盤模塊等部分,具有手動調(diào)節(jié)量程,通過單片機自動檢測分析識別原件性質(zhì)并通過LCD形象地顯示出來,正弦信號發(fā)生器可以實現(xiàn)幅值和頻率的調(diào)整,為了提高精度我們把被測的交流電壓先通過ICL7650來消除因為AD637輸入電阻較低帶來的誤差.實驗測試結(jié)果表明,本設(shè)計性能穩(wěn)定,測量精度高.
關(guān)鍵詞：電壓比例法 89C51 AD637 電阻電感電容測量 1602液晶模塊
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 錄
1 引言 1
2 電壓比例法測量原理 1
3 系統(tǒng)方案 2
3.1系統(tǒng)總體方案設(shè)計與結(jié)構(gòu)框圖 2
3.2方案設(shè)計與論證 3
4 硬件電路 5
4.1穩(wěn)壓電源模塊 5
4.2正弦信號發(fā)生器 5
4.3采樣電路 6
4.3液晶顯示模塊 6
5 系統(tǒng)軟件設(shè)計 7
5.1控制測量程序模塊 7
5.2 按鍵處理程序模塊 8
5.3電阻電感電容計算程序 9
5.4液晶顯示程序模塊 9
6 系統(tǒng)測試與結(jié)果分析 10
6.1對正弦信號源的測試 10
6.2對電阻電容電感的測量 10
6.3誤差分析 11
7 總結(jié) 12
參 考 文 獻 13
致 謝 14
