针对光电式烟雾传感器存在的问题, 设计了一种新型烟雾传感器, 该传感器成本低廉能进行自检且不怕光, 不怕磁, 工作稳定, 多个传感器可方便地与单片机相接。 关键词 光电 烟雾传感器 单片机 Abstract In acco rdance w ith the p roblem of pho toelect ric smoke senso r, a new pho toelect ric smoke senso r has been designed. Th is cheap senso r is no t influenced by ligh t and magnet ism, can self check,wo rk stable and easy jo ined w ith m icrocomputer. Key words Pho toelect ricity Smoke senso r M icrocomputer