Development of a Calibrated Transducer CMOS Circuit for Water Turbidity Monitoring

作者：Chiang Cheng Ta^*; Huang Shih Ming; Wu Chieh Neng

来源：IEEE Sensors Journal, 2016, 16(11): 4478-4483.

DOI：10.1109/JSEN.2016.2544800

• Turbidity sensor
• pond
• turbidity sensor transducer

In this paper, a calibrated transducer CMOS circuit for water turbidity monitoring is proposed. The output signal is a pulse stream. It can be easily broadcast over various digital transmission media. In addition, the proposed calibration method can reduce nonlinear errors arising from turbidity sensors. The turbidity of 8-1011 nephelometric turbidity units corresponded to the output frequency range of 25.3-22.3 kHz. After calibration, measured maximum frequency error was 0.36%.

• 出版日期2016-6-1