一种电池供电的采煤机启动预警电路设计

摘要

介绍了一种电池供电的采煤机启动预警电路的软、硬件设计方案,电路调试方法,调试过程中出现的问题及优化方法.该电路采用12 V充电电池作为系统电源,由MSP430F149单片机控制采煤机机身上电的预警过程,并且实时监控电池电量;如果单片机检测到的电池电压低于程序预设的低电压阈值,则驱动LED发出闪烁提醒信号,提醒用户给系统电池充电;整个电路在不用时处于低功耗模式,以延长使用时间.经过调试及优化,该电路程序运行正确,静态功耗仅为0.2mA,满足低功耗设计要求.%The paper introduced design schemes of software and hardware, debug methods, problems in debug process and optimization methods of a battery-powered early warning circuit for shearer starting.The circuit takes 12 V battery as system power supply, uses MSP430F149 single-chip microcomputer to control process of early warning when shearer body is powered up, and real-timely monitors battery capacity. If battery voltage checked by the single-chip microcomputer is lower than low-voltage threshold value preset in program, the circuit would give out blinking signal, which can remind users to charge the system battery. The whole circuit works in low power dissipation mode when it is idle to prolong service time. After debug and optimization, the circuits program runs correctly and static power dissipation of the circuit is only 0.2 mA, which meets design requirement of low power dissipation.