| 摘要 |
PURPOSE:To confirm the operation state of a decentralized equipment over a wide range by providing each equipment with a transmitting means which sends out a signal of specific frequency while the equipment is in operation and receiving the signal sent by the transmitting means by a received fitted above the equipment. CONSTITUTION:When the equipment 1 is in operation, the transmitting means 3 sends out the signal of the predetermined frequency. This transmitting means 3 is fitted with an antenna plate 4, which sends a signal upward. A receiver 6 is easily fitted on the ceiling 7 above the equipment with a both-sided adhesive tape, etc., and receives said signal 5. Consequently, the receiver 6 receives the signal 5 to know the operation state of the equipment positioned below it. Namely, even when there is partition plates corresponding to equipments like in an OA room, the operation states of the respective equipments can be known by receiving the signal by the receiver. |
