基于LoRa的文物建筑无线火灾报警系统研究

针对目前文物建筑火灾报警系统有线设计布线复杂、安装维护成本高等缺点，提出一种基于 LoRa 的文物建筑无线火灾报警系统。运用新型 LoRa 调制技术，采用 433 MHz 中心频点，结合文物建筑火灾特点，构建无线火灾报警系统。对报警器节点进行了低功耗设计，利用电磁场软件 FEKO 对天线匹配仿真和多点布控方式分析，可以有效降低系统功耗，延长通信距离。通过示范工程项目对火灾进行了试验研究，为文物建筑无线火灾报警系统的优化设计提供了技术支持。

Research on wireless fire alarm system of cultural relics building based on LoRa

Aiming at the shortcomings of the complex design and wiring of the cultural relics fire alarm system and the high installation and maintenance cost,a wireless fire alarm system based on LoRa is proposed.Using the new LoRa modulation technology and433 MHz center frequency point,and combined with the characteristics of cultural relics,built a wireless fire alarm system.Through the low-power design of the fire detection alarm node,the electromagnetic field software FEKO is used to analyze the antenna matching simulation and multi-point control mode,which can effectively reduce the system power consumption,and extend the communication distance.By demonstration project the system was tested,which provided technical support for the optimal design of the wireless fire alarm system for cultural relics.