The design of Detection and Alarm for Formaldehyde Concentration
Abstract:Designed a portable detection and alarm circuit for quantifying formaldehyde concentration in the air. The detection circuit is composed of the sensor, operational amplifier, A / D converter, microcontroller, display circuit and alarm circuit, such as some parts. The detection and alarm circuit of formaldehyde gas in response to the high sensitivity, good stability and low cost, power consumption in small, easy to operate, suitable for indoor formaldehyde detection.
Key word: Formaldehyde concentration;Sensor; Detection; Circuit designed