说明：  介绍了光纤光栅感温火灾探测系统的应用原 理，并重点阐述了用CPLD 设计虚拟MC14499 器件模 块，给出并解释了用Verilog HDL 语言实现的部分程 序和仿真测试结果。
(Introduction of Fiber Bragg Grating temperature fire detection system principles, and focuses on the use of CPLD design virtual MC14499 device module, are given and explained using the Verilog HDL language to achieve some of the procedures and simulation test results.)