Micro-Current Signal Acquisition of Formaldehyde Detection Based on the MSP430

Abstract:

Excessive intake of formaldehyde gas is harmful to human health. Design of fast digital detection of formaldehyde gas is contained in this paper, which take use of sensor for rapid detection of formaldehyde in the air , a data conditioning and acquisition circuit of changing nano-amps current provided by the sensor into a suitable voltage after the MAX4072 and OP37 was designed and the voltage would be received by MSP430 at last. This formaldehyde digital detector can improve the detection accuracy; it also can determine whether the formaldehyde in the air exceed the body can bear in a short period of time.

• Periodical: Applied Mechanics and Materials (Volumes 278-280)
• Pages: 954-957
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.278-280.954
• Online since: January 2013
• Authors: Chao Sun, Jian Jun Ding
• Keywords: Amplification, Formaldehyde Detection, MAX4072, Micro-Current Acquisition

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