| 摘要 |
Power consumption is detected by a microprocessor via a wattmeter to be converted into a charge according to a charge rate for the calculated charge to be displayed on the indicator. The display system comprises a detector (10) for outputting the signal on detection of the rotation by an eddy current rotation disc (1), a converter (20) for converting the output signal from the detector (10) to the square wave signal, a microprocessor (30) for counting the signal from the converter (20) to calculate into a charge to output and resume counting after clearing the calculated value by a reset signal, a resetter (40) for outputting reset signal to the microprocessor (3) by a user manipulation, a counter (50) for outputting the count of pulse signals given according to the power charge from the processor (30), and a display unit (60) for displaying the charge by the signal given from the counter (50). The display system executes accurate metering and calculation of power charge to improve reliability.
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