煤矿安全监控系统传感器在线升级技术研究

Research on on-line upgrade technology of sensors in coal mine safety monitoring system

为了解决煤矿安全监控系统传感器现场升级困难问题,通过对比分析ISP技术与IAP技术,得出IAP技术更适合矿用传感器的在线升级;在此基础上建立了一种通过煤矿安全监控系统现有的传输网络进行传感器在线升级的方法,地面上位机将升级程序bin文件通过以太网传输至监控分站暂存,再由监控分站通过CAN总线发送到需要升级的矿用传感器进行升级;将传感器单片机flash合理划分为3个存储区域,利用IAP区的Bootloader程序实现跳转到APP1区或APP2区运行新程序,以达到矿用传感器的升级目的,同时设计了程序传输容错机制,从而保障矿用传感器在线升级的稳定性。

In order to solve the difficult problem of on-site upgrading of sensors in coal mine safety monitoring system,ISP tech-nology and IAP technology are compared and analyzed.It is concluded that IAP technology is more suitable for on-line upgrading of mining sensors.On this basis,a method of sensor online upgrade through the existing transmission network of coal mine safety monitoring system is established.The ground host computer transmits the upgrade program of bin to the monitoring substation for temporary storage through Ethernet,and then the monitoring substation sends it to the mine sensor need to be upgraded through CAN Bus.The sensor MCU flash is reasonably divided into three storage areas,and the Bootloader program of IAP area is used to realize the program jump between APP1 area and APP2 area,so as to achieve the purpose of mine sensor upgrade.At the same time,the transmission fault-tolerant mechanism is designed to ensure the stability of mine sensor online upgrade.