Low power of test instrument for formaldehyde gas

Abstract

This paper mainly introduces a system design for portable real-time indoor formaldehyde gas detection.In the system,the MC9RS08LE4(Freescale 8-bit microcontroller core) processes signal which collects by the micro-current amplifier.In order to improve measurement accuracy,the piecewise linear interpolation method for data correction is used.The tester is small and convenient,and it can be applied indoor formaldehyde gas detection widely.