基于CAN总线及无线传感技术的液压支架压力监测系统

 工作面液压支架的支护问题一直是围绕煤矿生产安全和提高工作效率的重要问题。本论文介绍一种采用无线传感技术，将传感器采集到的信号通过无线模块发送给工作面检测分站，检测分站将接收到的数据进行处理后通过CAN总线上传给顺槽通信总站，并由通信总站将数据通过以太网传至地面监测站的方案。该系统实现了对工作面支架压力信号的采集、处理、传输和分析及对其在工作面、巷道和井上监控室的全面监测。

Research and development on new rheometer of cream like backfill slurry

As the development of mining engineering ,the filling technology used gangue as filling aggregate is being studied and applied.In order to solve the problems of general rheological instruments can not test the parameter of slurry for the relatively large size of gangue in general. The use of existing laboratory mixers and power meter and power sensor considered the the traditional rotational viscometer as the parameter calibration instruments for self-calibration rheometer to identify the correlation between the two conversion coefficients, as well as self-rheometer for testing formula then measured coarse aggregate slurry rheological parameters, and analyzed the reasons for self-rheological instrumental error.