Carrier data safety protection method and recording system device of pre-payment meter

Abstract

The invention is a data security protection and meter reading system device for an advance payment ammeter. When the user pays for electricity, the worker sends the electricity purchasing data to user ammeter through electric wire directly; the user ammeter carrier model receives the data, stores it into the electricity purchasing data memory circuit with determined format, and returns the affirmance information to the meter reading electricity sale computer through electric wire to be checked. The system is made up of meter reading electricity sale computer, meter reading collector, carrier of data memory circuit containing nonvolatile RAM device, user ammeter assembled together with the carrier model, a downstream channel and a upstream channel made up of low voltage electricity supplying circuit.

Description

technical field [0001] The invention belongs to electric energy metering, control and charge management technology, in particular, it uses the power line carrier as the information channel to carry out centralized meter reading and charging, and realizes the prepayment function on each user's electric energy meter, so as to protect data information security and avoid external malicious attacks. Decentralized control management system. Background technique [0002] The metering and charging of electric energy is currently mostly done by installing electric energy meters at the power supply entrance of each user, full-time meter reading personnel come to the door to read the meter regularly, and then each user pays the fee at the toll office. This method is time-consuming and labor-intensive, and errors caused by various reasons are unavoidable. Due to the lack of effective monitoring measures to pay electricity bills, many power supply companies or property companies have mo...

AI Technical Summary

Problems solved by technology

Since these two schemes still have a data input window open to users such as an IC card or a keyboard, they only increase the degree of preventing external malicious attacks, but cannot fundamentally avoid external attacks, and there is no information feedback channel to allow meter reading The electricity sales computer frequently checks the user's meter reading and electricity purchase data

Therefore, there are still large security loopholes in the data information of user electricity purchase charges and electricity meter reading

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