Gas Concentration Detection Based on WSN & Laser Technology

The gas chromatography to test concentration is the traditional methods. It can not solve the gas mixture, high temperature, humid heat and other adverse interference. This paper presents a method of gas concentration detection base on WSN and laser technology. The laser gas detector is designed based on the principle that the optical path difference of Michael interferometer in different gases makes the position and intensity of dry fringes change. The detected data is then transmitted by WSN. The results show that this method can accurately detect gas concentration, and can solve the problem of gas concentration detection under high temperature, hot and humid conditions.