【摘要】 介绍了一种低功耗数字气压计的软硬件实现方法。通过气压传感器获得与大气压相对应的模拟电压值,并经过A/D变换输入到单片机进行处理,从而实时显示相应的气压值。通过休眠或掉电的方式降低了仪器的耗电量,使用一支高容量锂/亚硫酰氯电池供电可以连续使用8年以上。更多还原

【Abstract】 A method to develop a digital Ultra-low Power Consumption barometer is illustrated in this article.The voltage signal output shows the air pressure.The signal is converted by A/D converter first,then input into a single chip microcomputer and displayed on LCD synchronously,the sleep mode is adopted to reduce the current demand.One lithium/thionyl chloride battery will be used over eight years.更多还原