To improve the low sensitivity of current gas sensors

an infrared light sensor system was designed using black silicon for radiation layer with amplify circuit and controller chip.We first introduce the fabrication and simulation of infrared light source.A new type of nano material black silicon was presented which can increase the light radiation efficiency by 40%.Then the peripheral circuit design of the sensor system was presented

including the power drive circuit

the two-stage filter amplifier circuit and the central processing unit.The test results show that the system could effectively enhance the sensitivity of gas sensors and meet the design requirements.