Leakage detection circuit and water meter

By designing a leakage detection circuit including reference voltage circuit, current detection and amplification circuit, low-pass filter circuit and alarm module, the flow measurement error problem caused by flow oscillation and noise interference during leakage detection is solved, and more accurate leakage detection and reliable water representation display are achieved.

CN119738011APending Publication Date: 2025-04-01NINGBO WATER METER (GRP) CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202411753375.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

When the water meter detects leakage, flow oscillation and noise interference lead to large flow measurement errors, affecting users' accurate estimate of the water volume.

Method used

A leakage detection circuit is designed, including reference voltage circuit, current detection and amplification circuit, low-pass filter circuit, microcontroller and alarm module. By combining these circuits, the stability and accuracy of signal detection are improved, and leakage detection and alarm are realized.

Benefits of technology

The reference voltage circuit provides accurate voltage reference, the current detection and amplification circuit enhance the amplitude of the voltage value, the low-pass filter circuit eliminates high-frequency interference, achieves more accurate leakage detection results, and alarms in time through the alarm module to improve the reliability of the water representation.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a leakage detection circuit and a water meter, which relate to the technical field of water meter application, and include a reference voltage circuit, a current detection and amplification circuit, a low-pass filtering circuit, a single-chip microcomputer and an alarm module; the reference voltage circuit is connected to the current detection and amplification circuit and is used to output a reference voltage; the current detection and amplification circuit is connected to the low-pass filtering circuit and is used to amplify the real-time leakage current and convert it into a real-time leakage voltage, and compare the real-time leakage voltage with the reference voltage to obtain a comparison voltage value; wherein the comparison voltage value is used to characterize the leakage detection result; the low-pass filtering circuit is connected to the single-chip microcomputer and is used to perform a noise reduction filtering operation on the comparison voltage value and send it to the single-chip microcomputer; the single-chip microcomputer is connected to the alarm module and is used to control the working state of the alarm module under the action of the comparison voltage value after the noise reduction filtering operation; the leakage situation is detected and an alarm is given to alleviate the technical problem that the leakage affects the water meter reading.
Need to check novelty before this filing date? Find Prior Art