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10μA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。
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 performance 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 overhead in the water meter working mode.Through experimental testing,it has been found that the average power consumption of the OpenCPU demagnetized intelligent water meter is reduced by 10μA left and right compared to traditional 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.
作者
徐昆龙
赵文龙
娄嘉骏
陈良勇
XU Kunlong;ZHAO Wenlong;LOU Jiajun;CHEN Liangyong(School of Information Engineering,Nanchang Aviation University,Nanchang 330063,China;Ningbo Water Meter(Group)Co.,Ltd.,Ningbo 315032,China)
出处
《自动化与仪表》
2024年第6期107-112,共6页
Automation & Instrumentation
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
non magnetic metrology
frequency adaptive adjustment strategy
rapid recovery mechanism
low power consumption
