OpenCPU无磁智能水表低功耗设计
Low Power Design of OpenCPU Magnetless Intelligent Water Meter
徐昆龙 1赵文龙 2娄嘉骏 1陈良勇3
作者信息
- 1. 南昌航空大学 信息工程学院,南昌 330063;宁波水表(集团)股份有限公司,宁波 315032
- 2. 南昌航空大学 信息工程学院,南昌 330063
- 3. 宁波水表(集团)股份有限公司,宁波 315032
- 折叠
摘要
近几年全球缺芯,OpenCPU的方案设计可以替智能水表产品减少一颗MCU开销,低成本的同时,更低功耗性能也成为水表行业的迫切需求.该文在这种"单芯"架构的基础上,对两个方面进行低功耗设计,一方面对无磁计量算法进行采样频率自适应调整策略,另一方面结合深度睡眠模式下的快速恢复机制处理秒级别类型的中断事件,规避了水表工作模式下额外的功耗开销.经试验检测,OpenCPU无磁智能水表在工作模式下比传统无磁智能水表的平均功耗降低了10 μA左右,从而延长了智能水表的使用寿命,在低功耗的电子行业中有一定的借鉴作用.
Abstract
In recent years,there has been a global shortage of cores,and the design of OpenCPU can reduce the cost of one MCU for intelligent water meter products.At the same time,low cost and lower power consumption perfor-mance have become an urgent demand in the water meter industry.On the basis of this"single core"architecture,this article conducts low-power design on two aspects,on the one hand,the sampling frequency adaptive adjustment strategy is applied to the non magnetic metering algorithm,and on the other hand,the fast recovery mechanism in deep sleep mode is combined to handle second level interrupt events,avoiding the additional power consumption over-head in the water meter working mode.Through experimental testing,it has been found that the average power con-sumption of the OpenCPU demagnetized intelligent water meter is reduced by 10 μA left and right compared to tra-ditional demagnetized intelligent water meters in working mode,thereby extending the service life of intelligent water meters,which has a certain reference value in the low-power electronic industry.
关键词
无磁计量/频率自适应调整策略/快速恢复机制/低功耗Key words
non magnetic metrology/frequency adaptive adjustment strategy/rapid recovery mechanism/low power con-sumption引用本文复制引用
出版年
2024
NETL
NSTL
万方数据