| 摘要 |
PROBLEM TO BE SOLVED: To downsize a wireless sensor in a wireless system.SOLUTION: Each of a plurality of wireless sensors 20 has: a detection part 21 that detects a physical quantity; and a sensor-side transmission/reception part 22 that wirelessly performs a reception of a signal of electric power for operating the wireless sensor 20 and a transmission of a signal of the physical quantity detected by the detection part 21. Further, a sharing unit 10 has: a close distance transmission/reception part 11 that receives the signal of the physical quantity from each of the plurality of wireless sensors 20; and an electric power transmission part 13 that transmits electric power to each of the plurality of wireless sensors 20. In this way, each wireless sensor 20 is configured to receive an electric power supply from the sharing unit 10 shared by each wireless sensor 20, not having a configuration of generating and accumulating the electric power. Thus, the wireless sensor 20 can be downsized. |
