| 摘要 |
<P>PROBLEM TO BE SOLVED: To visually display electric energy not used in a house, remained and sold to a power company and bought electric power from commercial power which the power company supplies the house. <P>SOLUTION: A power measurement circuit 11 of a distribution board 6 measures the sold power not used in the house, remained and sold to the power company in the power produced by power generating modules 2a, 2b and converted via a power conditioner 3, and the bought electric power from the commercial power when the power generated by each power generating module is deficient, a distribution board CPU 12 calculates the integrated power resulting from the measured power within a prescribed time and transmits a signal including stored power information to a house master unit 7. Further, a plurality of LEDs 22a to 22h placed in parallel configuring a display section 22 of the house master unit are distinguished by the sold electric energy and the bought electric power and displayed by the number of the electric energy on the basis of the control of the master unit CPU 21 for analyzing the signal from the distribution board. <P>COPYRIGHT: (C)2003,JPO |
