Testing and selection of ad hoc protocol for proximity vehicle test in open-pit coal mine
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摘要: 通过分析目前临近车辆检测技术,即超声波传感技术、脉冲雷达和激光探测技术、计算机视觉技术、RFID和电子标签技术、GPS技术,指出GPS集成无线通信技术最适合应用在露天煤矿临近车辆检测中;提出一种GPS集成ad hoc的临近车辆检测无线通信系统:只要相邻车辆处于通信距离范围内,车辆间便可采用IEEE 802.11协议,以单跳或多跳的方式交换GPS定位数据。以该系统为研究对象,模拟真实的露天煤矿场景,测试分析了IEEE 802.11a/b/p三种版本的通信协议在视距传输、非视距传输、接收机在斜坡底部和接收机在斜坡顶部4种不同场景下的信号接收强度和有效通信距离。测试结果表明,在以上4种不同场景下,IEEE 802.11b协议的数据包接收率更高、有效通信距离更远,优于IEEE 802.11a协议和IEEE 802.11p协议,更适合露天煤矿临近车辆检测。
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关键词:
- 露天煤矿 /
- 矿车安全 /
- 临近车辆检测 /
- GPS集成ad hoc /
- 定位精度
Abstract: The paper pointed out that GPS integrated wireless communication technology is most suitable for application of proximity vehicle detection in open-pit coal mine on the basis of analyzing existing proximity vehicle testing technologies, such as ultrasonic sensing technology, pulse radar and laser detection technology, computer vision technology, RFID and electronic tag technology, GPS technology. It put forward a wireless communication system for proximity vehicle testing with GPS integrating ad hoc in open-pit coal mine: as long as the proximity vehicles are in communication distance range, it can adopt IEEE 802.11 agreement between vehicles, and exchange GPS positioning data by single-hop or multiple-hop method. Taking the system as research object, the real scene of open-pit coal mine was simulated, the received signal strength and the effective communication distance for IEEE 802.11a/b/p were tested and analyzed under the following conditions of line of sight, non line of sight, the receiver at bottom of slope, and receiver at top of slope. The testing results show that protocol packet reception rate of IEEE 802.11b is higher, effective communication distance is farther compared with IEEE 802.11a/p , and is more suitable for proximity vehicle testing in open-pit coal mine.
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