CPU card three phase electronic type pre-payment step electricity price electrical energy meter

Abstract

A CPU card single / three-phase electronic prepayment stepwise electricity price and electric energy meter comprises an interface unit, a power circuit unit, an electric energy metering and an electric parameter detection unit, an electric meter power cut-off mechanism and an MCU control unit; the interface unit, the power circuit unit, and the electric energy metering and the electric parameter detection unit are respectively input to the MCU control unit; the MCU control unit outputs the power cut-off information to the electric meter power cut-off mechanism; the power circuit unit simultaneously supplies power to the electric energy metering and electric parameter detection unit; the electric energy meter further comprises a display unit, an ESAM unit and an alarm unit; the ESAM unit is connected between the interface unit and the MCU control unit; and the display unit and the alarm unit are activated by the control information output by the MCU control unit. The electric energy meter of the invention adopts the stepwise electricity price, and gives different electricity prices based on the monthly power consumption of the users, which facilitates a power supply bureau to flexibly select the policy of encouraging or restricting power utilization.

Description

technical field [0001] The invention relates to an electric energy meter, in particular to an electric energy meter which uses a CPU card as an information exchange medium to automatically control electricity consumption metering and electricity consumption settlement. Background technique [0002] With the rapid development of electronic technology, large-scale integrated circuits have been widely used in electric energy meters. The traditional inductive energy meter requires staff to come to the door to read the meter or turn on and off the power, calculate the electricity bill, and mail the electricity bill, etc., and there will be problems of delayed payment and bad debt, especially in the user group of power supply companies, the electricity consumption is relatively large, The amount of electricity bills payable is also relatively large. Timely recovery of the electricity bills is the focus and difficulty in the operation of power supply enterprises, and it is difficul...

AI Technical Summary

Problems solved by technology

[0004] There are prepaid electric energy meters in the prior art, but the rate is generally fixed, or a variety of rates are stipulated, thus requiring a certain storage space

In addition, there is less display of information, lack of reminder functions and emergency functions for insufficient funds, etc., so it brings certain inconvenience to users.

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