A refund method for electric energy meter

Abstract

Provided is a charge return method of an electric energy meter. The charge return method of the electric energy meter is characterized by comprising the following steps that (1) a charge return moduleis added in a user card, a charge return amount parameter in the charge return module is X1, wherein the X1 is nonnegative number; (2) manual charge return operation is carried out on the electric energy meter, then the user card is inserted into the electric energy meter, and the residual amount in the electric energy meter is written into the charge return amount parameter X1 in the charge return module of the user card; (3) a user takes the user card to an electricity consumption charging place, a worker reads out the charge return amount in the user card to achieve the charge return. Compared with the prior art, the charge return method of the electric energy meter has the advantages that the user card is inserted into a charge return interface, so that data in the electric energy meter is written back to the charge return module in the user card, the operation is simple, externally additional equipment is not needed to carry out charge return, the charge return can be achieved through the direct data interaction between the electric energy meter and the user card, the time of charge return is short, the user card has dual-purpose functions of recharge and charge return, and the problem that an existing electric energy meter cannot return charge is solved.

Description

technical field [0001] The invention relates to the field of electric energy meters, in particular to a refund method for electric energy meters. Background technique [0002] Some public rental housing, school dormitories, shops or power facilities in remote areas do not have remote data collection equipment, and cannot realize data access to the Internet. User card, go to the grid business hall or electricity recharge point to recharge manually or automatically, and then insert the user card into the electric energy meter, and realize the electric charge recharge of the electric energy meter through the communication between the user card and the electric energy meter. Usually this kind of electric energy meter is a prepaid electric energy meter. When the electricity in the electric energy meter is used up, the electric energy meter will automatically cut off the power. For the convenience of use, users often charge a certain amount of electricity in advance, but when use...

AI Technical Summary

Problems solved by technology

However, the electricity fee query module, recharge module, payment module and refund module of the card swiping controller in this system are all connected with the MK06 signal processing module. Recharge or refund, and the refund module on the card swiping controller also needs to swipe the card to communicate with the card to make the fee refund to the card, so the refund time is long and the signal processing is slow

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