基于电力线载波技术的井下移动目标跟踪系统

Development of Underground Moving Target-tracking System Based on Power Line Carrier Technology

为了获得矿山井下移动目标（作业人员、矿车没备等）的运行轨迹，设计丁一种基于电力线载波技术的井下移动目标跟踪系统。系统中发射器采用编码器编码后发送超高频信号，接收器采用二次混频型超外差式接收移动目标信号。系统中采用了直接序列扩频（DSSS）、数字处理（DSP）和自适应技术（AT），保证在高噪声环境下通信可靠，在30-150kHz频率内提供不同的工作频率，数据传输率为300或600b／s，有效地解决了电力线通讯问题。接收器接收的信号被储存在系统的数据库中，数据库可以记录发射器信号的时间和坐标，控制调度员根据显示器显示的现场实际人员、车辆运行状况与需要发布控制命令，实现人员、车辆的安全调度。

To follow the moving targets （operational persons, mining equipment） in underground mining, an underground moving target tracking system based on power line carrier technology was developed. The system uses the emitter to send ultra high frequency signals after coding with signal coder and the secondary superheterodyne mixing receiver to accept the moving target signals. It also adopts direct series scale-up system （DSSS）, digital series processing （DSP） and adap- tive technology （ AT）, ensuring the communication reliability in an environment with great noise. Different working fre- quencies can be provided within 30 - 150 kHz range and the data transmission rate is 300 or 600 b/s, which has effectively solved the problems in power line communication. The received signals are stored in the system database, which can record the time and the coordinates of the emitter signals. The command dispatcher issues the control order according to the displayed real conditions of the moving personnel and vehicles, thus realizing a safety dispatch of both persons and vehicles.