外文翻译（汉译英）急需以下内容翻
本文开发了一种井下的自动报警系统，来解决从主干通道到采煤作业面这一距离上的通信空白。The development of a working automatic warning systems to address access to the trunk from coal mining operations in the face of this distance communication gaps。
系统采用单片机无线收发系统配合Aloha通信协议来实现，系统将传感器采集来的信号进行处理，发送给中央处理设备并在有危险的时候进行报警通知危险工作人员撤离。
Chanpianji wi...全部
本文开发了一种井下的自动报警系统，来解决从主干通道到采煤作业面这一距离上的通信空白。The development of a working automatic warning systems to address access to the trunk from coal mining operations in the face of this distance communication gaps。
系统采用单片机无线收发系统配合Aloha通信协议来实现，系统将传感器采集来的信号进行处理，发送给中央处理设备并在有危险的时候进行报警通知危险工作人员撤离。
Chanpianji wireless system used to receive system to achieve agreement with Aloha communications, sensor systems will be gathering to signal processing, and sent to the central processing equipment in a dangerous time staff from the danger warning notice。
系统总体设计为孤立的各个报警系统，采用ALOHA无线通信协议由中央操作台把它们联系起来组成报警系统,主要介绍了CGW瓦斯浓度传感器的工作原理与应用，以及利用单片机对风机和水泵进行控制，利用 PSD光电位置传感器组成的塌方探测报警系统。
Systems design to isolate the various warning systems, using Aloha wireless agreements linking them by the central control desk composition warning systems, the main gas concentration sensors introduced CGW operating principles and applications, as well as the use of air-compressors and pumps Chanpianji control, PSD PV position sensors used to detect warning system consisting of landslides。
单片机无线收发系统的硬件组成。对于ALOHA协议本文作了简单的介绍。
Danpianji wireless transceivers system hardware。 Aloha agreement made in this simple introduction。
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