【摘要】 针对矿井移动通信存在的问题,采用移动台、基站和程控交换机的三级网络结构,设计了集中控制方式和分散控制方式相结合的单区多基站系统。该系统射频收发模块采用ISM波段射频收发芯片TRF6900,微处理器采用MSP430F149,基站采用时分多址方式(TDMA)。实践证明,基站和移动台之间无线传输最远距离达900m,信号传输稳定。更多还原

【Abstract】 The paper analyzes the problem of coal mine mobile telecommunication. The three layer network construction is adopted on mobile station and base station and switch and the system is designed on single area and most base stations of the method of concentration control and scatter control combined together. Radio frequency of mobile station adopts TRF6900 chip, MPU adopts MSP430F149 chip; base station adopts TDMA. Practice proves that the farthest distance of wireless transmission amounts to 900 m, and the signal transmission is stable.更多还原