煤矿安全2026，Vol.57Issue(3)：237-243,7.DOI:10.13347/j.cnki.mkaq.20251010
煤矿井下总线设备低带宽差分升级技术研究
Research on low-bandwidth differential upgrade technology for underground coal mine bus devices
摘要
Abstract
To address issues such as prolonged downtime,high reliance on manual intervention,and low efficiency associated with traditional offline upgrade methods for underground coal mine bus devices,a low-bandwidth differential upgrade method for coal mine bus devices is proposed.This method,based on differential compression algorithms and substation collaborative control,optim-izes differential package generation mechanisms and multi-level verification strategies to achieve efficient concurrent upgrades across multiple devices.The upgrade framework adopts a collaborative working mechanism combining the bsdiff differential al-gorithm and the Lempel-Ziv-Markov chain-Algorithm(LZMA).The host configuration software identifies device version and type information,matches old and new version source codes from the program library,uses the bsdiff algorithm to extract differential in-formation(identical,offset,and new code segments),and generates an initial differential package.This package is then secondarily compressed via the LZMA compression algorithm to form a lightweight upgrade package,which,after adding header information,becomes the final differential upgrade package.A multi-device collaborative upgrade architecture is designed,in which the substa-tion allocates independent storage space for each bus device.Through a data hybrid transmission architecture and a resource schedul-ing optimization model,dynamic bandwidth allocation and priority scheduling between upgrade data and regular communication data are achieved.Upon receiving data,the bus device temporarily stores the upgrade package in the APP2 storage area.Based on the header metadata,dual verification is performed using the cyclic redundancy check(CRC)and message-digest algorithm 5(MD5).After successful verification,the decompression process is initiated,and the bsdiff algorithm is used to reconstruct the new version in the APP3 area by combining it with the existing program in the APP1 area.The Bootloader migrates the upgrade program to the APP1 main execution area via memory copy.After a second MD5 verification ensures data consistency,the version switch is com-pleted.Experimental results show that the upgrade method supports concurrent upgrades across various bus environments such as RS485 and CAN.Compared with traditional methods,the upgrade time for a single device is reduced by over 65%,and the differen-tial package compression rate exceeds 68.2%,significantly enhancing the efficiency and reliability of underground coal mine bus device upgrades.关键词
总线设备/差分升级/低带宽/数据混合传输/动态优先级调度Key words
bus devices/differential upgrade/low-bandwidth/hybrid data transmission/dynamic priority scheduling分类
矿业与冶金引用本文复制引用
胡宇..煤矿井下总线设备低带宽差分升级技术研究[J].煤矿安全,2026,57(3):237-243,7.基金项目
天地科技股份有限公司重点资助项目(2024-TD-ZD013-05) （2024-TD-ZD013-05）
中煤科工集团重庆研究院有限公司自立重点资助项目(2025ZDYF02) （2025ZDYF02）
