火灾探测器的分类 火灾探测器是火灾自动报警和自动灭火系统最基本和最关键的部件之一，对被保护区域进行不间断的监视和探测，把火灾初期阶段能引起火灾的参数（烟、热及光等信息）尽早、及时和准确地检测出来并报警。除易燃易爆物质遇火立即爆炸起火外，一般物质的火灾发展过程通常都要经过引燃、发展和熄灭三个阶段。因此，火灾探测器的选择原则是要根据被保护区域内初期火灾的形成和发展特点去选择有相应特点和功能的火灾探测器。 Fire detector is the classification of fire detector automatic fire alarm and automatic fire extinguishing system, one of the most basic and most critical parts of protected areas, continuous monitoring and detecting the early stages of fire can cause fire parameters (such as smoke, heat and light information) as soon as possible, timely and accurate detection and alarm. In addition to inflammable and explosive substances, fire and fire immediately burst into the fire, and the development of normal substances usually occurs through the three stages of ignition, development and extinction. Therefore, the choice of fire detector principle is according to the formation and development of protected area in the early fire characteristics to choose to have corresponding characteristics and functions of the fire detector.