System of Solving the High CO Concentration

• Main Authors: Bai-Hao Chang, 張?豪
• Other Authors: Jen-Yu Shieh
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/duc7x6

碩士 === 國立虎尾科技大學 === 光電與材料科技研究所 === 102 === The study adopted a Holteck HT66F50, featured with Flash Memory A/D type 8-bit microcontroller (MCU), and connected with a MQ7 gas sensor and ventilation fans on the ceiling to input the level of carbon monoxide (CO) into the MCU for calculating. As the level of CO in the air reaches 100 ppm, the fans will be activated to exhaust CO out to the space; besides, if the level of CO in the air is over 200 ppm, the buzzer will sound indicating “Alarm”. Carbon monoxide detectors on the market can only buzz during alarm and chirp if a trouble is found, and the prices are high; thus, the study focused on designing a low-cost and multi-functional carbon monoxide detector. The detector is far different from those on the market due to its uninterruptable power system (UPS) which can continuously run the device during power failure and provide an emergency lighting and be a USB charger. Nowadays, people have relied on 3C products; therefore, the detector has become practical, especially during power failure. The most important feature is that it can monitor the level of carbon dioxide indoor and prevent people from suffering carbon dioxide poisoning.