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Electric energy metering chip and circuit detection system thereof

An electric energy metering chip and circuit detection technology, which is applied in the direction of measuring electric variables, measuring current/voltage, and components of electrical measuring instruments, etc., can solve problems such as overload and high manufacturing cost, and achieve current overload, low manufacturing cost, and circuit achieve simple effects

Active Publication Date: 2019-03-19
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 circuit detection system thereof
  • Electric energy metering chip and circuit detection system thereof
  • Electric energy metering chip and circuit detection system thereof

Examples

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Effect test

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 in an external circuit. The power metering chip is used to measure the current value of a certain node of the external circuit. Before measurement, the current channel of the power 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] like 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 with 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 for generating a fault detection signal of the external circuit according to the voltage effect...

Embodiment 2

[0058] This embodiment provides an electric energy metering chip, and the electric energy metering chip integrates the circuit detection system shown in the first embodiment. The electric energy measuring chip not only has the function of measuring electric energy, but also can realize the detection of the current overload and leakage of the external circuit.

[0059] In this embodiment, considering that in practical applications, due to different power consumption requirements and different application occasions, the power metering chip may be a single current channel or multiple current channels, and the corresponding settings for each current channel A circuit detection system to realize a related integrated system in which a single-chip electric energy metering chip can monitor multiple current overload and leakage detection at the same time.

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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, the overcurrent and leakage protection of electronic equipment are generally realized through overload protectors and leakage protectors. The overload protector plays a protective role by detecting the working current of the load and disconnecting the load when the current exceeds the rated working current. The leakage protector is to detect the leakage current between the line and the ground. When the leakage current exceeds the set value, the protector will act to disconnect the circuit to protect the power supply and personal safety. [0003] In applications with higher and higher system integration, current overload and leakage detection are newly required in the field of electric energy metering, and correspondingly, the chip is required to have the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R22/10G01R19/165G01R31/02G01R1/02G08B19/00
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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