An electric energy meter data acquisition device based on pulse acquisition

By using a pulse-based data acquisition device for electricity meters, the compatibility problem between old-style electricity meters and centralized meter reading systems has been solved, enabling a low-cost and rapid upgrade solution and improving the reliability and accuracy of data acquisition.

CN224343304UActive Publication Date: 2026-06-09SHANDONG CHENHUI ELECTRONICS TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG CHENHUI ELECTRONICS TECH
Filing Date
2025-08-01
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing old-style electricity meters are incompatible with centralized meter reading systems or energy management systems, resulting in high retrofit costs and long construction time.

Method used

The energy meter data acquisition device adopts pulse acquisition, including a pulse signal conditioning module, photoelectric sensor, multi-channel parallel acquisition unit and hybrid communication gateway. Electromagnetic interference is eliminated through opto-isolation and RC filtering. The HC32L196K8TA microcontroller is used to realize pulse counting and power-off protection. It supports RS-485/4G-CAT.1 dual-mode transmission and is compatible with mechanical meters and electronic meters.

Benefits of technology

It eliminates the need to replace electricity meters, reducing renovation costs and construction time, improving the reliability and accuracy of data collection, supporting multiple communication methods, and is suitable for the renovation of old electricity meters.

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Abstract

This invention discloses a data acquisition device for an energy meter based on pulse acquisition, comprising a pulse signal conditioning module, a photoelectric sensor, a multi-channel parallel acquisition unit, and a hybrid communication gateway. The output of the pulse signal conditioning module is connected to the pulse output interface of the energy meter. The photoelectric sensor is used to output pulse signals to the parallel acquisition unit, and the multi-channel parallel acquisition unit is used to send pulse calculation data to the hybrid communication gateway. This invention eliminates the need to replace the energy meter, reducing costs and construction time. Electromagnetic interference is eliminated through photoelectric isolation and RC filtering circuits. An HC32L196K8TA microcontroller is used for pulse counting and power-off protection. It supports RS-485 / 4G-CAT.1 dual-mode transmission and is compatible with photoelectric retrofitting of mechanical meters, direct acquisition from electronic meters, and 485 communication acquisition. A single concentrator supports pulse acquisition management of 48 meters and can be expanded through the 485 interface, reducing the pulse measurement error rate.
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