发明名称 |
Solid state watt-hour meter |
摘要 |
A watt-hour meter is disclosed which includes: a microprocessor coupled to a solid-state Hall-Effect sensor; an electrically alterable ROM coupled to the microprocessor; a power supply; a power outage timing means using the discharge characteristic of a capacitor; apparatus for supplying a 60 Hz clock signal to the microprocessor; a readout device coupled to the microprocessor to provide an indication of the power consumed; an output on the microprocessor for controlling a circuit breaker; and a switch for overriding the microprocessor controlled circuit breaker. The microprocessor and the electrically alterable ROM are connected and programmed: to sense the time of day as determined from an initial time of day and setting the 60 Hz clock signal; to sense and compute the power used by the consumer; to automatically open the circuit breaker when power demand on the electric power source is high and/or the cost per kilowatt hour is high; to automatically close the circuit breaker when the power demand on the source of electric power is low and/or the cost per kilowatt power is low; and to allow a consumer to override the microprocessor's control of the circuit breaker.
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申请公布号 |
US4467434(A) |
申请公布日期 |
1984.08.21 |
申请号 |
US19810303627 |
申请日期 |
1981.09.18 |
申请人 |
MCGRAW-EDISON CO. |
发明人 |
HURLEY, JAMES R.;GILKER, CLYDE |
分类号 |
G01R21/08;(IPC1-7):G01R21/00 |
主分类号 |
G01R21/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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