| 摘要 |
Method and apparatus to facilitate improved sensing of tampering of an electrically powered device, such as an electric watt-hour meter installed a t a residence for metering the amount of electric energy consumed at the residence. The detected tampering involves an effort to remove the electric meter from its power socket, to interrupt the metering of electric energy consumption, or to otherwise gain access for diverting electric energy. The method and apparatus senses motion (10) of the meter and sets a "Tampering Flag" in a non-volatile memory (12). The "Tamper Flag" is cleared if there i s no loss of power to the meter within the predetermined period of time. Upon detecting a resumption of power after a loss of power to the meter, an indication of sensed tampering is made if the "Tamper Flag" is set.
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