基 于 无 线 信 号 强 度 变 化 的 自 动 报警 定 位 装 置内容摘要：本文提出了一种基于无线信号强度变化的定位报警装置，可在实施救援任务的消防员自身生命受到威胁时，及时进行定位发出求救报警信息，使其他消防员能够及时对其进行援救。通过对各种无线定位技术的研究讨论，本文主要采用SI4463 芯片对消防员进行测距定位，并设计采用LORA 扩频通信控制模块与SX1278进行了远距离的通信，以便更好地实现对消防员运动体征信息收集、运动跟踪状态监测以及对火场内有害气体的实时监测，并进行判断在需要的时候将报警信号发送至其他消防员处，使其接受到求救信息后可以及时实施救援任务，尽最大程度的保障消防人员的安全。 关 键 词： 无线通信 信号强度定位 自动报警Automatic alarm positioning device based on wireless signal strength changeAbstract ：This paper proposes a positioning alarm device based on the change of wireless signal strength, which can timely locate and send out the distress alarm information when the life of the firefighters who carry out rescue tasks is threatened, so that other firefighters can rescue them in time.Through research and discussion of various wireless positioning technologies, this article mainly uses SI4463 chip to locate and locate firefighters, and designs to use LORA spread spectrum communication control module to communicate with SX1278 at a long distance, so as to better achieve the firefighters. Collection of sports sign information, motion tracking status monitoring and real-time monitoring of harmful gases in the fire site, and judgment to send alarm signals to other firefighters when needed, so that they can implement rescue tasks in time after receiving distress information. Maximum guarantee the safety of firefighters.KeyWords: Wireless communication Signal strength positioning Automatic alarm目 录第一章绪论........................................................................................
