微伏級直流電壓信號放大電路設計
發(fā)布時間:2019-05-18 06:28
【摘要】:針對微伏級直流電壓信號測量過程中存在信噪比低、測量精度不高和抗干擾能力差的問題,設計一種以TLC2652為核心器件的放大測量電路,實現(xiàn)了對5~45μV范圍內電壓信號的精準放大。電路采用低通濾波電路、陷波電路降低內部噪聲與外部干擾;采用隔離電路,隔離測量端對采集端的影響;采用線性穩(wěn)壓芯片進行電源模塊的設計,提高測量精度并降低功耗。經(jīng)仿真實驗驗證,說明所設計的微伏級直流電壓信號放大電路具有抑制共模干擾、抑制溫漂、穩(wěn)定性好、抗干擾性強等特點,測量精度達到0.044%。
[Abstract]:In order to solve the problems of low signal-to-noise ratio (SNR), low measurement accuracy and poor anti-interference ability in the process of micro-volt DC voltage signal measurement, a amplifier measuring circuit with TLC2652 as the core device is designed, and the accurate amplification of voltage signal in the range of 5 ~ 45 渭 V is realized. The circuit adopts low-pass filter circuit, the notch circuit reduces the internal noise and external interference, the isolation circuit is used to isolate the influence of the measuring terminal on the acquisition terminal, and the linear voltage stabilizer chip is used to design the power supply module to improve the measurement accuracy and reduce the power consumption. The simulation results show that the designed micro-volt DC voltage signal amplifier has the characteristics of suppressing common-mode interference, suppressing temperature drift, good stability and strong anti-interference, and the measurement accuracy is 0.044%.
【作者單位】: 南京信息工程大學氣象災害預報預警與評估協(xié)同創(chuàng)新中心;南京信息工程大學江蘇省氣象傳感網(wǎng)技術工程中心;
【基金】:國家自然科學基金(61072133) 江蘇省產(chǎn)學研聯(lián)合創(chuàng)新資金計劃(BY2013007-02) 江蘇省高校自然科學研究重大項目(15KJA460008) 江蘇省“六大人才高峰”計劃和江蘇省“信息與通信工程”優(yōu)勢學科資助
【分類號】:TN702
[Abstract]:In order to solve the problems of low signal-to-noise ratio (SNR), low measurement accuracy and poor anti-interference ability in the process of micro-volt DC voltage signal measurement, a amplifier measuring circuit with TLC2652 as the core device is designed, and the accurate amplification of voltage signal in the range of 5 ~ 45 渭 V is realized. The circuit adopts low-pass filter circuit, the notch circuit reduces the internal noise and external interference, the isolation circuit is used to isolate the influence of the measuring terminal on the acquisition terminal, and the linear voltage stabilizer chip is used to design the power supply module to improve the measurement accuracy and reduce the power consumption. The simulation results show that the designed micro-volt DC voltage signal amplifier has the characteristics of suppressing common-mode interference, suppressing temperature drift, good stability and strong anti-interference, and the measurement accuracy is 0.044%.
【作者單位】: 南京信息工程大學氣象災害預報預警與評估協(xié)同創(chuàng)新中心;南京信息工程大學江蘇省氣象傳感網(wǎng)技術工程中心;
【基金】:國家自然科學基金(61072133) 江蘇省產(chǎn)學研聯(lián)合創(chuàng)新資金計劃(BY2013007-02) 江蘇省高校自然科學研究重大項目(15KJA460008) 江蘇省“六大人才高峰”計劃和江蘇省“信息與通信工程”優(yōu)勢學科資助
【分類號】:TN702
【相似文獻】
相關期刊論文 前10條
1 漆建國;一種高抗干擾的彈丸信號放大電路[J];兵工自動化;1990年03期
2 胡澤;葛亮;李俊蘭;張禾;陶真;;鉆井工程參數(shù)測試的小信號放大電路設計[J];微計算機信息;2011年04期
3 周迪;;同步信號放大電路[J];實用電子文摘;1997年06期
4 殷鑄靈;許良軍;;小信號放大電路的噪聲分析[J];機電元件;2011年06期
5 趙山,晁明舉,王洋;利用BASIC處理小信號放大電路問題[J];周口師專學報;1995年03期
6 樓鋼;李偉;鄧學博;;小信號放大電路設計[J];浙江理工大學學報;2007年06期
7 林騰達;劉繼;;高增益低噪聲信號放大電路的研究[J];佳木斯大學學報(自然科學版);2011年06期
8 葉淬;;角跟蹤系統(tǒng)中誤差信號放大電路之改進[J];船工學報;1981年01期
9 周云艷;;弱信號放大電路的設計[J];山西電子技術;2011年06期
10 王玨;王鑫;譚輝;陳教澤;;高能工業(yè)CT探測系統(tǒng)光電流信號放大電路特性研究[J];核電子學與探測技術;2011年01期
相關會議論文 前1條
1 馮W氀,
本文編號:2479755
本文鏈接:http://sikaile.net/kejilunwen/dianzigongchenglunwen/2479755.html
教材專著