| 摘要 |
PROBLEM TO BE SOLVED: To monitor the electric power using state of a building or a factory, using a large quantity of electric power on a real-time basis by transmitting the detected instantaneous power consumption by radio, comparing the received power consumption with a target value, and displaying them on a graph. SOLUTION: In this method, a measurement section transmits an instantaneous electric power P and an accumulated electric power quantity ΣP detected as the power rate by ratio. The radio receiving circuit of a display section receives them, an arithmetic circuit compares the electric power quantity P with a target value, calculates the energy saving degree of the compared result, converts the electric power quantity ΣP at detection into the contract rate, and outputs them to a display 22. The display 22 displays the date 32, present and target rates 33a, 33b, and folded lines 34a, 34b, 34c for past results fluctuation and the target and actual accumulated values in the monitoring time zone in case of daily results, for example. The daily power consumption in the amount of money per unit time is shown by a bar graph 35. Here daily, monthly and yearly results can be selectively displayed via a measurement switching button 30a and daily, monthly and yearly result selecting buttons 30b-30d. |
