Six-channel direct current standard meter

By designing a six-channel DC standard meter, employing a high-performance processor and multi-channel power pulse generation, the problems of not being able to directly view measured values ​​and high costs in DC power meter calibration devices are solved, realizing efficient and flexible multi-channel voltage and current measurement and equipment expansion.

CN224152636UActive Publication Date: 2026-04-21ZHEJIANG HANPU POWER TECH CO LTD
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Patent Information

Application Number
CN202520489860.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-20
Publication Date
2026-04-21
Estimated Expiration
2035-03-20

AI Technical Summary

Technical Problem

In existing DC energy meter calibration devices, the standard unit lacks a display component, making it impossible to directly view the measured values. Furthermore, using a single-channel standard unit requires the design of a main control chip, which increases costs.

Method used

Design a six-channel DC standard meter, including a main control unit, a data acquisition unit, a human-machine interface display unit, a power supply unit, and a communication unit. It adopts a 32-bit ARM high-speed processor and multiple programmable logic chips to realize multi-channel power pulse generation and data processing. The units are connected through a standard bus, supporting multi-channel voltage and current measurement, and the number of channels is configured by plug-in card.

Benefits of technology

It enables efficient measurement of multiple voltage and current channels, reduces costs, improves verification efficiency, supports flexible configuration of 1-6 channels, and can be expanded to other measurement modes, enhancing the scalability of the equipment.

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Abstract

The utility model discloses a six-channel direct-current standard meter, which comprises a main control unit, six groups of acquisition units, a large-current acquisition unit, a human-computer interface display unit, a power supply unit and a communication unit, and is characterized in that the six groups of acquisition units and the large-current acquisition unit are electrically connected with the main control unit through a standard bus interface; the main control unit is electrically connected with the human-computer interface display unit and the communication unit, and the main control unit is provided with a first programmable logic chip, a second programmable logic chip and a third programmable logic chip; the first programmable logic chip is used for generating six paths of electric energy pulses; and the main control unit reads ADC data of the acquisition unit through a data bus, obtains voltage and current values after digital filtering, and generates corresponding six paths of electric energy pulses for verification of a to-be-verified meter. The utility model provides a six-channel high-precision direct-current standard electric energy meter which can measure six paths of large voltages, six paths of small voltages and one path of large current at the same time.
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