Anti-stealing prepaid electricity meter

Abstract

The invention discloses an electricity larceny prevention type prepayment electricity meter. The electricity larceny prevention type prepayment electricity meter comprises a current pressure converter and a storage and further comprises a microprocessor. The current pressure converter still can keep the connected state when a power grid sampling power line is disconnected. The storage has a signal state identifier representing whether a disconnected power grid sampling power line exists or not. The microprocessor integrates the storage and a communication interface and controls the working state of the current pressure converter. The microprocessor operates to receive a request of changing the state of the current pressure converter, detect the state of the disconnected power grid sampling power line stored in the storage of the electricity meter, and determine whether the working state of the current pressure converter is changed or not accordingly.

Description

technical field [0001] The embodiment of the invention relates to a prepaid electricity measuring device, which has the function of preventing electricity theft. Background technique [0002] In order to avoid unauthorized interruption when the meter is measuring (such as electromagnetically interfering with the current induction of the transformer, or changing the wiring of the L and N lines so that the meter in the meter produces misreading, or The power line is short-circuited and not connected to the metering circuit board in the meter), and those skilled in the art continue to improve the structure and function of the meter, such as using a more complex and sturdy shell design to prevent the meter from being opened, or using lead wires for the meter. The specific wiring method inside the enclosure can prevent the wiring method from being changed by unauthorized personnel. However, these efforts consume design and manufacturing costs, and cannot change the defects of th...

AI Technical Summary

Problems solved by technology

However, these efforts consume design and manufacturing costs, and cannot change the defects of existing technologies, such as preventing users from stealing electricity, which cannot be effectively solved, especially for advanced energy meters (such as rate control smart meters), illegal users can use more The unique wiring method steals electricity or slows down power consumption, so the power system department cannot know the user's electricity usage and quality in time, causing a huge waste of resources for the power department

[0003] Another problem is that once the meter is powered off or fails, the data will be lost immediately, and when the power is turned on again, there may be information reset or clock disorder, and this possibility occurs frequently in actual use, so In order to avoid such problems, reliability improvements should be made to the clock and data of electricity meters, especially prepaid electricity meters

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