| 摘要 |
PURPOSE:To use a battery for driving a car-borne telecommunication equipment effectively by receiving power waves sent out from a power wave transmitting antenna with a car-borne power receiving antenna and by turning ON a switch. CONSTITUTION:When a train 1 approaches a power wave transmitting antenna 5a, the power waves from it is received by a power wave receiving antenna 3b2. After it was processed with a detector 3a4, a switch 3a3 is turned ON. Power is thereby supplied from a battery 3a2 to a car-borne telecommunication equipment main body 3a1, with which automatic telecommunication is started. When the train 1 runs and the power wave receiving antenna 3b2 receives no power waves from the power wave transmitting antenna 5a, the switch 3a3 turns OFF because the power with which it has been driven is lost. On that account, the telecommunication equipment main body 3a1 is stopped due to no power supply from the battery 3a2 and the discharging of the battery 3a2 is also stopped. |
