Low Power Design of OpenCPU Magnetless Intelligent Water Meter
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.
non magnetic metrologyfrequency adaptive adjustment strategyrapid recovery mechanismlow power con-sumption