Safety detecting circuit for intelligent electric energy meter and intelligent electric energy meter

Abstract

The invention discloses a safety detecting circuit for an intelligent electric energy meter. The safety detecting circuit for the intelligent electric energy meter comprises a sampling conversion module, a safety detecting module, a main control module, and an uplink communication module. The sampling conversion module detects a live current, a neutral current, and the voltage between the neutralline and the live line to generate a live current digital signal, a neutral current digital signal, and a zero-live line voltage digital signal, and calculates a first electrical parameter. The safetydetecting module calculates a second electrical parameter according to the live current digital signal, the neutral current digital signal, and the zero-live line voltage digital signal, and obtainsearly warning information according to the second electrical parameter and a pre-stored load characteristic database. The main control module stores and displays the first electrical parameter and thewarning information. The uplink communication module forwards the early warning information. Therefore, it is judged whether there are electrical safety hazards such as leakage, overload, and illegalload on the line, and the warning information is transmitted, which can effectively eliminate the electrical safety hazards of the load.

Description

technical field [0001] The invention belongs to the technical field of electric energy meter detection, in particular to an intelligent electric energy meter safety detection circuit and the intelligent electric energy meter. Background technique [0002] At present, the intelligence of smart energy meters is mainly reflected in meter reading and payment, but it cannot be used for safety detection of power consumption of user loads; in terms of safety detection, leakage detection switches and short-circuit detection switches are usually used for leakage and short-circuit detection In order to protect the safety of the user load, when the leakage current of the user load reaches the set threshold or the line current exceeds the set threshold, the power-off protection is performed; however, there is no early warning for the leakage current and illegal load current below the set threshold Function, can not really rule out the potential safety hazards of power consumption of use...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a smart electric energy meter safety detection circuit and an intelligent electric energy meter, aiming at solving the problem that the intelligent electric energy meter existing in the traditional technical solution cannot warn the leakage current and the illegal load current and cannot rule out the hidden danger of load electricity safety

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