矿用产品的运行环境较地面设备而言要恶劣得多,必须要对井下设备进行专门的硬件电路保护设计,才能确保产品在井下能长期可靠地运行。本文对井下设备的电源输入端、电源输出端、信号输入端、通信接口等部分均提出了专门的保护设计电路,还研究了EMC相关设计技术,为井下设备的可靠运行提供了完整的硬件设计方案。 Mine products operating environment is much worse than the ground equipment, underground hardware must be dedicated hardware circuit protection design, in order to ensure that products can be long-term and reliable underground operation. In this paper, a special protection design circuit is proposed for the power input, power output, signal input, communication interface and other parts of the downhole equipment. EMC related design techniques are also studied, providing a complete hardware design for the reliable operation of the downhole equipment Program.