针对目前矿用机械仪最的需要,开发了一种基于J1939协议的煤矿机械用仪表介绍了CAN总线及J1939协议,给出了基于J1939协议的矿山机械发动机转速计时仪的硬件及软件设计方案实验数据分析表明,该仪表能够满足煤矿机械的要求,从而解决了矿用机械仪表系统的复杂化和可维护性差的问题 In view of the most need of mine mechanical instrument at present, a kind of measuring instrument of coal mine machinery based on J1939 protocol was introduced, which introduced the CAN bus and J1939 protocol. The hardware and software design scheme experiment of mine machinery engine speed chronograph based on J1939 protocol Data analysis shows that the instrument can meet the requirements of coal mining machinery, thus solving the problem of the complexity and maintainability of mining mechanical instrumentation system