矿井低压真空馈电开关智能综合保护器的硬件设计

摘要

介绍了一种基于数字信号控制器的矿井低压真空馈电开关智能综合保护器的硬件设计,阐述了在该智能综合保护器硬件设计过程中的技术创新点,包括选用dsPIC30F6014A数字信号控制器、设计了负电压产生电路和备用电源、增加了液晶背光控制电路、增加了瓦斯频率输入部分.该智能综合保护器采用4层电路板结构以减小尺寸和提高抗干扰能力,并采用外部接线端子排接线结构,便于在井下更换.测试结果验证了该智能综合保护器的可行性.%The paper introduced hardware design of an intelligent integrated protector for mine lowvoltage vacuum feeding switch based on digital signal processor and expounded technical innovations in process of hardware design of the intelligent integrated protector, including using dsPIC30F6014A digital signal processor, designing negative voltage producing circuit and standby power supply and adding LCD back-lighted control circuit and input part of gas frequency. The intelligent integrated protector adopts four-layer circuit-board structure to decrease size and improve anti-interference ability, and rowed wiring structure of out wiring terminal for convenient change underground. The testing result showed the feasibility of the intelligent integrated protector.