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Analysis of coal mine data acquisition technology background, contrast optocoupler isolation and acquisition technology, design a high precision mine data acquisition system using isolation transmitter module, and puts forward the design of the system architecture. Detailed software and hardware implementation scheme based on isolation transmitter module, including signal isolation transmission circuit, signal conditioning circuit, filter circuit, data acquisition circuit design, design of main control circuit based on ARM and uC/OS-II embedded operating system software and each sub module design based on task. Focus on the analysis of the work of ADC timing acquisition and master control program design process. The actual test results show that, high precision mining parameters system adopts isolation transmitter module, acquisition error coefficient is maintained within 0.1%, acquisition accuracy is higher than 99.9%, in the complex noise environment, high precision, less affected by environment, stable and reliable work, meet the design index. The system has been laid, and achieved good economic benefit.