航天器多路射频频谱自动监测系统设计

设计了一种采用太阳能供电模式的无线户外环境监测系统。该系统由终端节点,ZigBee-GSM网关和上位机数据存储中心组成,集成ZigBee和GSM无线通信,根据用户发送的短信指令控制终端节点数据采集的通断,同时用户发送短信指令远程查询户外环境的重要信息。针对户外环境因子的特点,选用工业级、灵敏度高的传感器,对户外不同位置的PM2.5浓度和紫外线指数进行测量,测量结果既可在上位机实时显示和存储,也可以由ZigBee-GSM网关通过SIM900A模块发送至移动终端。户外测试结果表明,该系统运行稳定,数据传输可靠,能快速地实现远程遥测功能,为户外环境远程监测提供了一种技术手段。

Design of Spacecraft Multi-RF Electrical Spectrum Automatic Monitoring and Measuring System

A spacecraft multi-RF electrical spectrum automatic monitoring and measuring system has been designed in order to improve the efficiency of spacecraft RF signals monitoring and measuring. RF spectrum is measured by the spectrum analyzer, and the different RF signal channels are switched by the microwave switch matrix equipment. A multi-RF spectrum automatic monitoring and measuring software has been developed to control the whole system and perform read-write operation of data. Automatic monitoring and measuring of 15 RF signal spectrums with frequency range between 50 MHz and 3 GHz is implemented. The efficiency of spacecraft RF signal monitoring is improved significantly, with the time cost reducing from 3min/channel to 10 s/channel and manpower saving from 2 to 1. This system has been applied in testing of Chinese space station.