Circuit and method for calculating real-time power consumption of lithium battery of electromagnetic water meter

Abstract

The invention discloses a circuit and a method for calculating real-time power consumption of a lithium battery of an electromagnetic water meter. The circuit for calculating the real-time power consumption of the lithium battery of the electromagnetic water meter comprises a working state time measuring unit, a real-time current detecting unit and a power consumption calculating unit. The working state time measuring unit is used for acquiring the time of the electromagnetic water meter in each working state; the real-time current detecting unit is used for detecting real-time current so as to detect the current value of the electromagnetic water meter in each working state; and the power consumption calculation unit is used for calculating the power consumption of the electromagnetic water meter in each working state and the accumulated power consumption in each working state. The overall power consumption of the electromagnetic water meter can be accurately detected in real time under the condition of low power consumption, the power consumption condition of the lithium battery can be known in time, problems can be found and solved in time, in addition, power early warning can be given out in advance, the lithium battery can be replaced in time, and normal use of the electromagnetic water meter is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of measuring devices, and relates to an electromagnetic water meter, in particular to a circuit and method for calculating real-time power consumption of a lithium battery of an electromagnetic water meter. Background technique [0002] Now the country is vigorously promoting smart cities. In fact, smart water affairs are an important part of smart cities. The basis of smart water affairs lies in the collection of data, which requires the installation of a large number of flow measuring instruments. Leakage, repairing the leakage of the pipe network in time can greatly reduce the amount of leakage. As a new technology, electromagnetic flowmeters and electromagnetic water meters are gradually replacing Other flow meters. [0003] Since electromagnetic water meters are generally installed outdoors, power supply is very inconvenient. Basic electromagnetic water meters are powered by lithium batteries. In order...

AI Technical Summary

Problems solved by technology

[0003] Since electromagnetic water meters are generally installed outdoors, power supply is very inconvenient. Basic electromagnetic water meters are powered by lithium batteries. In order to ensure the normal use of electromagnetic water meters and timely replacement of lithium batteries, it is necessary to monitor the power consumption of electromagnetic water meters and timely Find the abnormal power consumption of the electromagnetic water meter and accurately judge the replacement time of the lithium battery of the electromagnetic water meter. The existing technology judges the remaining capacity of the lithium battery by the voltage of the lithium battery, because the voltage of the large-capacity lithium battery does not have an accurate correspondence with the remaining capacity. , so the actual remaining capacity cannot be obtained by measuring the voltage of the lithium battery, only a voltage threshold can be used to know that the lithium battery is out of power, but once the lithium battery reaches the threshold, the capacity of the general lithium battery can only be maintained for a short period of time It's too late to replace the lithium battery in time

Images