Point Smoke Density Measurement System Design based on Photoelectricity

摘要：

Point smoke density measurement system plays the most important role while calibrating fire detector. Based on dimmer principle and photoelectricity technology, a measurement system is designed in this paper. As the emitting device, infrared LED provides light into the smoke measured. Corresponding driving circuit is designed to control On/Off of the LED and provide constant current. As the receiving device, photodiode is chosen to convert infrared light into weak current. The conditioning circuit converts the weak current into standard voltage to be measured. As the central unit, Sing Chip Microcomputer (SCM) acquires the standard voltage and communicate with PC by RS48S interface. The system designed possesses such advantages as high accuracy, more flexibility, lower power consume.

关键词： Point Smoke Density Measurement Photoelectricity Infrared LED Photodiode SCM

作者: Tao Xu Yanjun Lu Xiaodong Zhang

作者单位: Shenyang Aerospace University Shenyang city, China

会议类型: 国际会议

会议名称: 2011 International Conference on Electronics and Optoelectronics(2011电子学与光电子学国际会议 ICEOE 2011)

会议地点: 大连

会议语种:英文

页码: 995-998

在线出版日期: 2011-07-29（万方平台首次上网日期，不代表论文的发表时间）