MSP430单片机在激光CO气体检测仪上的应用-德州仪器在线技术.PDFVIP

2009 仪 表 技 术 与 传 感 器 2009 7 Instrum ent T echn ique and Sensor N o7 M SP430 CO 1, 2 1, 2 3 张永亮 , 熊庆国 , 蒋伟荣 ( 1. , 43008 1; 2. , 430081; 3. , 442002 : 利用光纤传感与二次谐波检测相结合的方法设计了 款激光 CO 气体检测仪, 并给出了以 M SP430FG 437 单片 机为核心的仪器 M CU 模块的硬件和软件设计利用M SP4 30 内部 D /A 输出检测所需的正弦波和三角波; 再由高精度 A /D检测 次谐波二次谐波温度和压强信息; 然后通过 R S232C 和计算机通信该仪器具有抗干扰能力强测量精度 高不需经常标定等优点 : CO 气体; 光纤传感; 二次谐波检测; M SP430 : TP273 : A : 1002- 1841( 2009 07 - 0020 - 0 3 App lication of M SP430 in L aser CO Gas Detection In strum ent 1, 2 1, 2 3 ZHANG Y ong- liang , X IONG Q ing-guo , J IANG W ei-rong ( 1 E ngin eering R esearch Center of M etallu rgical A u tom a tion and M easurem en t T echnology, M in istry of Edu cation, W uhan 430081, China; 2 College of In form ation Science and Engineering, W uhan Un iversity of Science and T echnology, W uhan 430081, China; 3 D epar tm en t of E lectronics In form ation Science, H ubei A u tom otive Industries In st itu te, Sh iy an 442002, Ch ina) A bstract: Th is paper designed a lase r CO gas de tecting instrument w ith the comb ination of advanced optica l f iber sensing techno logy and second-harm on ic detecting techno logy. A nd it g ave the ha rdw are and sofwt are design of the M CU pa rt, w hich a- dopted M SP430FG 437 m icrocontro ller as the core. T he interna l D /A o f M SP 430 w as u sed to outpu t the s ine w ave and tr iangu lar signal needed in dete tcting. T he interna lA / D w as used to de tect f irst-harm on ic, second-harm onic, temperature and pressure. The R S232C w as u sed to communicate w ith compu ter. The instrum en t has adva