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红外测油仪中信号调理电路的设计与研究
资料介绍
为实现并提高红外测油仪技术指标,对红外测油仪中的信号调理电路进行全新设计。信号调理电路通过由模拟开关器构成的相敏检波电路与双路理想积分器相结合的方式,能在提高信噪比的同时,加快光谱图的扫描速度。系统的控制信号采用ARM7系列的LPC2136芯片实现。该电路适用于处理光信号经过红外测油仪内样品池、热释电传感器以及前置放大和滤波后输出的电压信号。通过大量实验表明,测油仪扫描速度得到了提高,精度也有明显改善,实验结果验证了该电路的可靠性和有效性,实现了对于红外测油仪中信号调理电路的优化。
In order to realize and improve the technical indexs of infrared oil content analyzer,a new design of signal conditioning circuit in infrared oil meter is presented.The signal conditioning circuit combines the phasesensitive detection circuit composed of analog switches with the dual-channel ideal integrator,which can improve the signal-to-noise ratio and speed up the scanning speed of the spectrogram.The control signal of the system is realized by LPC2136 chip of ARM7 series.The circuit is suitable for processing output voltage signal converted from optical signal through sample cell,pyroelectric sensor,pre-amplification and filtering in infrared oil content analyzer.Experiment results show that the scanning speed and accuracy of the oil content analyzer have been improved.The experimental results verify the reliability and effectiveness of the circuit,and the optimization of the signal conditioning circuit of the infrared oil content analyzer.
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| 文件名 | 大小 |
| 红外测油仪中信号调理电路的设计与研究.pdf | 164K |
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