Harmful gas sensor based on Arduino

• Main Authors: szu-tse peng, 彭思哲
• Other Authors: Bin-Chang Chieu
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/4kvx95

碩士 === 國立臺灣科技大學 === 電子工程系 === 105 === The purpose of dissertation is “develop and design the device that detects the harmful gas for home environment.” There is some of harmful gas around human life. For example, the formaldehyde from furniture decoration, or the methane from gas leaking. However, the detectors of harmful gas device are high price products with limited functionality. Dissertation was using initial development board, different gas sensor and temperature sensor module, which develop the detector to maintain living safety and raising living quality. The goals of the device are high quality, easy to use, and stable, no longer be limited by the standardization format. The development board was Arduino UNO, micro controller was ATmega328P. The harmful gas detector went through the Arduino UNO development board after the operation, then the users could monitor through the PC is the aim of dissertation. First of all, dissertation simplified the Arduino UNO development board and development software; then explained the hardware connection, including MLX90614 non-contact infrared temperature sensor, DHT11 digital temperature and humidity combo sensor, HCHO formaldehyde sensor, and MQ2 gas sensor. All hardware connections would went through C++ program testing. In the end, dissertation described the results from verification system to make sure the designing principle was perfect for harmful gas detector.