| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wattmeter which can read the correct count value even when the pulse number disagreement arises in the counting between a transmitter and a receiver. <P>SOLUTION: An electric energy calculation integration device 20 which measures the electric energy on the basis of alternate current and voltage of the system to be measured and a pulse generator 30 which transmits a pulse having a prescribed width per each progress of the measurement value measured by the electric energy calculation integrator 20 are provided. The pulse generator 30 includes a pulse generation part 31 which generates a prescribed number of pulses according to the measured value read from the electric energy calculation integrator 20, a mark/space signal generation part 33 which generates a mark/space signal consisting of the mark/space corresponding to the measured value read from the electric energy calculation integrator 20, and a data superposition part 35 which transmits the mark/space signal from the mark/space signal generation part 33, as the measurement value data, by superposing it on the pulse having the prescribed width from the pulse generation part 31. <P>COPYRIGHT: (C)2004,JPO |
