一種多通道高精度數字化傳感器變換裝置設計

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一種多通道高精度數字化傳感器變換裝置設計
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作者單位:(北京精密機電控制設備研究所,北京 100076)
作者簡(jiǎn)介:劉書(shū)選(1987-),男,山東臨清人,工程師,主要從事伺服電子測量方向的研究。[FQ)]
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Developing a Digital Sensor Transform Device with Multi-channel and High Precision

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(Beijing Research Institute of Precise Mechanical and Electronic Control Equipment, Beijing 100076,China)

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摘要:

針對現有傳感器變換裝置受誤差及溫漂等因素影響造成采集精度不高的問(wèn)題,專(zhuān)門(mén)設計了一種傳感器變換裝置；該變換裝置具有小型化、低成本、高性能的特點(diǎn)；采用C8051F系列單片機作為主控芯片；為了滿(mǎn)足8通道雙極性模擬信號采集的要求,采用2片AD公司的14位、6通道A/D芯片對±10 V范圍的雙極模擬信號進(jìn)行變換；采用前端信號放大電路、跟隨濾波處理電路及微處理器的軟件進(jìn)行線(xiàn)性補償,達到高精度變換要求；采用RS-422專(zhuān)用芯片完成信號的數字化傳輸；實(shí)驗結果表明該變換裝置的變換精度能達到0.05%,數字信號傳輸穩定,可廣泛應用于軍事和工業(yè)生產(chǎn)領(lǐng)域的高精度測量場(chǎng)合。

Abstract:

Designed a novel sensor transform device for the existing sensor transform devices are susceptible to accidental error and tempreature drift or other factor which caused the acquisition accuracy is not high. This deviec has the characteristics of miniaturization, low cost and high performance. Using C8051F series MCU as the main control chip, in order to meet the requirements of 8 channel bipolar analog signal acquisition, moreover taking 2 pieces 14 bit 6 channel A/D chip of AD company for transform bipolar analog signal of the range of ±10 V. Adopting the front-end siginal amplification and following filter processing circuit with software of the microprocessor to linear compensation for the requirements of high precision transformation. Taking the RS-422 chip and assembly language complete the signal digital transmission, with adjustable power conversion chip and achived through high precision resistance regulator for precision power supply requirements of the angular can reach 0.05%, at the same time the digital signal transmission is stable which can be widely used in military and industrial production in the field of high precision measurement.

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劉書(shū)選,馬亞軍,王偉.一種多通道高精度數字化傳感器變換裝置設計計算機測量與控制[J].,2016,24(6):326-329.

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收稿日期:2015-08-27
最后修改日期:2015-09-25
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在線(xiàn)發(fā)布日期: 2016-07-27
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