电容式传感器前端接口电路

2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE) Pub Date : 2015-10-01 DOI:10.1109/ICITEED.2015.7408963

Akira Ota, W. Petchmaneelumka, T. Cheypoca, A. Rerkratn, V. Riewruja

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引用次数: 2

摘要

本文提出了一种利用电荷放大器构成电容-电压变换器的电容式传感器接口电路。该电路适用于前端模数转换器(ADC)和宽变化范围的传感电容。所获得的输出电压提供线性传递特性和快速响应。电路配置仅使用市售器件实现。实验结果证实了所提电路的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Front-end interfacing circuit for capacitive sensor

This paper presents an interfacing circuit for capacitive sensor using charge amplifier formed a capacitance-to-voltage converter. The proposed circuit is suitable for the front-end analog-to-digital converter (ADC) and wide variable range of sensing capacitance. The achieved output voltage provides a linear transfer characteristic and fast response. The circuit configuration is implemented using only commercially available devices. The performances of proposed circuit are confirmed by experimental results.

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来源期刊

2015 7th International Conference on Information Technology and Electrical Engineering (ICITEE)

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