| 摘要 |
PROBLEM TO BE SOLVED: To provide a time synchronization system capable of performing accurate control processing based on time information by simply and easily correcting the time information for use in disaster prevention devices such as fire sensors by remote control operation, and a disaster prevention device.SOLUTION: Time information of a disaster prevention device, for example, a P-type fire sensor 10 is remotely synchronized by an operation of a timepiece synchronization device 60. The time of the P-type fire sensor 10 is synchronized by transmitting a telegraphic message including reference time information to a wireless tag 30 provided in the P-type fire sensor 10 by the time synchronization operation of the timepiece synchronization device 60 carried by a clerk in charge, and is stored therein. A sensor control section of the P-type fire sensor 10 is connected to the wireless tag 30 via a wired interface, reads the reference time information from the wireless tag 30, and corrects the own time information.SELECTED DRAWING: Figure 1 |
