冒顶事件作为常见的井下安全事故给国家财产和人民的生命安全造成了巨大的威胁和损失，加强对顶板压力的监控对煤矿安全生产具有重要的现实意义。传统的矿山压力观测仪需要人工定时现场读数，无法做到实时监测，并且也不能够存储压力数据，无法对顶板压力的变化规律和趋势作出系统全面的分析。虽然也有企业对基于网络的煤矿顶板压力监测系统进行了研究，但由于多采用的是有线技术进行网络组建，线路容易老化或遭到腐蚀、磨损,故障发生率较高,误报警率高。基于无线传感器网络的煤矿顶板压力监测系统可以很好地解决上述问题。 ZigBee是一种短距离无线通信技术，它具有低功耗、低复杂度、短延时、低数据速率、低成本的优点。将ZigBee引入到无线传感器网络中，可以被广泛应用到环境监测、智能家居、工业控制等领域。 本文以矿井顶板压力监测系统为研究对象，设计并实现了一个基于ZigBee无线压力传感器网络的矿井顶板压力监测系统，设计的内容包括硬件系统和软件系统两部分。整个矿井顶板压力监测系统硬件部分主要由传感器节点、路由器节点、协调器节点和上位机组成，其中传感器节点、路由器节点、协调器节点构成无线传感器网络负责压力数据的采集并传送给上位机，上位机负责对压力数据进行分析和处理。传感器节点、路由器节点、协调器节点的设计均基于CC2430无线射频芯片，辅助以必要的外围电路，采用模块化设计原则，便于硬件系统的维护和扩充。重点对压力传感器节点的硬件设计进行了研究。软件部分针对ZigBee协议栈，在IAR EW开发环境下设计了网络各节点的软件，并对软件程序进行调试，将程序烧到节点硬件设备上，进行组网。 与传统方法相比，该监测系统具有免布线、易于维护，抗干扰性强、扩展性好、灵活性好等优点，可容易的运用到实际的应用中。经过初步的设计和实现，并通过实验室环境下测试，该系统基本上达到预期的设计目的。

As the main safety accident in coal mine, roof accident causes enormous losses and threat to the national property and safety of the lives of the people. It has important practical significance to strengthen the monitoring of the roof pressure for coal mine safety. Traditional mining-site observing systems requires manual timing-reading, can not do real-time monitoring. As pressure data is not able to stored, the changes on the roof pressure patterns and trends can not be systematic and comprehensive analysied. Although business-to-network-based coal mine roof pressure monitoring systems have been studied, but they are mostly based on wire techniques. The line was easy to aging or corrosion, wear, leading to failure and false alarm.Wireless Sensor Network for Coal Mine Pressure Monitoring System can solve the above problems. ZigBee technology is a new short-range wireless communications technology. It has a low power, low complexity, short delay, low data rate, low cost.With ZigBee technique introduced, the wireless sensor networkcan be widely applied to environmental monitoring, smart home, industrial control and other fields. In this paper, the design and implementation of a ZigBee-based wireless pressure sensor technology was researched.The network design including hardware and software systems in two parts.The mine roof pressure monitoring system hardware mainly including the sensor nodes, router nodes, the coordinator node and the host computer, of which the sensor nodes, router nodes, the coordinator nodes of wireless sensor network is responsible for collecting pressure data and send to the host computer, PCmachine is responsible for pressure data analysising and processing.Sensor nodes, router nodes, the coordinator node design are based on the CC2430 RF chip, supporting the necessary peripheral circuits, the principle of modular design, easy maintenance and expansion of the hardware system.The hardware design of sensor nodes are studied primarily.Software components for the ZigBee protocol stack, the IAR EW development environment to design the network each node of the software, and debugging software, burn the program on the node hardware, the networking. Compared with traditional methods, the monitoring system has free wiring, easy maintenance, strong anti-interference, good scalability, flexibility, etc., can be easily applied to practical applications.After a preliminary design and implementation, and through testing, the system is basically designed to achieve the desired purpose.