Fire detection and alarm systems rely on secure communication links between the control panel and the sensors. Neil Woodward provides an overview of the technology involved and the protocols developed. In the past, communication modes for detection systems have involved a combination of digital and analogue signals. The status of the device, its location and its type were all reported back to the control panel in a particular time-frame. The height of the pulse within the time-frame indicated the state of the device.
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机译：火灾探测和报警系统依赖于控制面板和传感器之间的安全通信链接。 Neil Woodward概述了所涉及的技术和开发的协议。过去，检测系统的通信模式涉及数字和模拟信号的组合。设备的状态，位置和类型均在特定时间范围内报告给控制面板。在时间范围内脉冲的高度指示设备的状态。
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