基于CAN总线的井下人员定位系统设计

发布时间：2018-03-03 02:15

本文选题：人员定位　切入点：CAN总线　出处：《哈尔滨理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着我国经济的持续高速发展，对各种矿产资源的需求与日俱增，尤其是作为我国主要能源矿产之一的煤炭资源。我国煤炭行业的作业方式主要是井下开采，国家在煤炭安全生产上给予高度重视，确立了矿井必备的六大安全避险系统—监测监控、人员定位、通信联络、紧急避险、压风自救、供水施救。其中人员定位系统是集井下人员管理、跟踪定位、灾后急救、安全预警等于一体的综合性应用系统。但由于技术与实际情况相脱离，设备的稳定性不高，人员定位系统还存在诸多问题。因此，对深入研究井下人员定位系统仍具有重要的意义。本文在对我国现有的井下人员定位系统进行深入研究的基础上，结合我国煤矿行业的实际情况，设计了基于CAN总线的井下人员定位系统。该系统采用RFID技术进行前端信息采集，以CAN总线为核心网进行数据传输，井下通信分站与上位机的通信则通过工业以太网来实现。CAN总线技术作为关键技术，在系统中起到承上启下的作用，其特点是结构简单、实时性强、可靠性高。尤其是CAN总线的自动仲裁机制特别适合应用于井下人员定位系统。本设计将整个系统分为三个模块进行处理，即标识卡射频识别模块、读卡分站模块和CAN转以太网模块。完成了人员身份等信息经由射频发送，读卡分站接收到射频信号并加载位置及时间信息，后经由CAN总线网络发送到CAN转以太网模块中，定位信息在此模块中转换为以太网信号发送给上位机，即完成人员定位功能。该系统还具备上位机对井下人员调度，预警等功能。针对三个子模块要实现的功能，系统采用具有丰富的外设接口，以ARM Cortex-M3为内核的STM32微控制器作为主要控制芯片；射频芯片采用nRF24LE1和nRF24L01+芯片，其中nRF24LE1具有高集成度，内部集成增强型51内核控制器；以太网芯片采用高集成度的ENC28J60，通过控制器的SPI接口即可完成对其配置。经过大量实验测试，该系统能够实现设计功能，，具有良好的实时性和稳定性。
[Abstract]:With the sustained and rapid development of China's economy, the demand for various mineral resources is increasing day by day, especially the coal resources, which are one of the main energy minerals in our country. The state attaches great importance to the safety of coal production, and has established six necessary safety and risk aversion systems for coal mines-monitoring, monitoring, personnel positioning, communication and liaison, emergency risk avoidance, and air pressure and self-rescue. The personnel positioning system is a comprehensive application system that integrates underground personnel management, tracking and positioning, first aid after disaster and safety warning. However, because the technology is divorced from the actual situation, the stability of the equipment is not high. There are still many problems in the personnel positioning system, therefore, it is still of great significance for the further study of the underground personnel positioning system. Based on the in-depth study of the existing downhole personnel positioning system in China, this paper combines the actual situation of the coal mine industry in China. The downhole personnel positioning system based on CAN bus is designed. The system adopts RFID technology to collect front-end information and uses CAN bus as the core network for data transmission. The communication between the underground communication sub-station and the host computer is realized by industrial Ethernet as the key technology, which plays a connecting role in the system. It is characterized by simple structure and strong real-time performance. High reliability, especially the automatic arbitration mechanism of CAN bus is especially suitable for underground personnel positioning system. This design divides the whole system into three modules to process, namely, the RFID module, the sub-station module and the CAN to Ethernet module. After receiving the radio frequency signal and loading the position and time information, the card reading sub-station transmits the position and time information to the CAN to Ethernet module via the CAN bus network, in which the positioning information is converted to the Ethernet signal and sent to the upper computer. The system also has the functions of the upper computer to the downhole personnel dispatching, warning and so on. In view of the functions to be realized by the three sub-modules, the system adopts a rich peripheral interface. STM32 microcontroller based on ARM Cortex-M3 is used as the main control chip, nRF24LE1 and nRF24L01 chips are used in RF chip, in which nRF24LE1 has high integration and internal integration enhanced 51 kernel controller. The Ethernet chip uses ENC28J60 with high integration, which can be configured through the SPI interface of the controller. After a lot of experiments, the system can realize the design function, and has good real-time and stability.
【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD76

【引证文献】