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Electric Energy Metering Chip and Its Circuit Detection System

An energy metering chip and circuit detection technology, which is used in short-circuit testing, measuring electrical variables, measuring current/voltage, etc., can solve problems such as high manufacturing cost and overload, and achieve low manufacturing cost, current overload, and simple circuit implementation. Effect

Active Publication Date: 2021-01-05
SHANGHAI BEILING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an electric energy metering chip and its circuit detection system in order to overcome the defects of high manufacturing cost in the prior art in which the overload and leakage detection functions are realized in the electric energy metering chip

Method used

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  • Electric Energy Metering Chip and Its Circuit Detection System
  • Electric Energy Metering Chip and Its Circuit Detection System
  • Electric Energy Metering Chip and Its Circuit Detection System

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Embodiment 1

[0037] This embodiment provides a circuit detection system for an electric energy metering chip, which is used to detect current overcurrent and leakage faults of external circuits. The electric energy metering chip is used to measure the current value of a certain node of the external circuit. Before the measurement, the current channel of the electric energy metering chip is connected to the circuit node of the external circuit, and the circuit node can input the current signal to the current channel.

[0038] Such as figure 1 As shown, in this embodiment, the circuit detection system includes: a calculation module 1 and a detection module 2 , and the calculation module 1 is connected to the detection module 2 . The calculation module 1 is used to calculate the effective value of the voltage of the current channel when the current signal flows through the current channel. The detection module 2 is used to generate a fault detection signal of the external circuit according t...

Embodiment 2

[0058] This embodiment provides an electric energy metering chip, and the electric energy metering chip is integrated with the circuit detection system shown in Embodiment 1. The electric energy metering chip not only has the function of measuring electric energy, but also can detect the current overload and leakage of the external circuit.

[0059] In this embodiment, considering that in practical applications, due to the different needs of various power consumption and different application occasions, the electric energy metering chip can be a single current channel or multiple current channels, and each current channel is correspondingly set A circuit detection system, in order to realize a related integrated system that a single-chip electric energy metering chip can simultaneously monitor multi-channel current overload and leakage detection.

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Abstract

The invention discloses an electric energy metering chip and a circuit detection system thereof. The circuit detection system comprises a calculation module and a detection module; the calculation module is used for calculating a voltage effective value of a current channel when a current signal flows through the current channel of the electric energy metering chip; the detection module is used for generating a fault detection signal of an external circuit according to the voltage effective value. According to the electric energy metering chip, the multifunctional purpose of the electric energy metering chip is achieved, the electric energy metering chip has the electric energy metering function and can also achieve detection for current overload and electric leakage, circuit implementation is simple, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the technical field of electronic products, in particular to an electric energy metering chip and a circuit detection system thereof. Background technique [0002] At present, overcurrent and leakage protection of electronic equipment is generally realized through overload protectors and leakage protectors. The overload protector plays a protective role by detecting the operating current of the load, and disconnecting the load when the current exceeds the rated operating current. The leakage protector detects the leakage current between the line and the ground. When it exceeds the set value, the protector acts to disconnect the circuit, which plays a role in protecting the power supply and personal safety. [0003] In applications with higher and higher system integration, the demand for current overload and leakage detection in the field of electric energy measurement has increased, and the chip is required to have the functi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R22/10G01R19/165G01R31/52G01R1/02G08B19/00
CPCG01R1/02G01R19/16571G01R22/10G08B19/00G01R31/50
Inventor 王祥莉韩明袁文师李飞鸣
Owner SHANGHAI BEILING
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