Wireless disaster prevention system and wireless disaster prevention system ID setting method

摘要

To provide a wireless disaster prevention system which wirelessly acquires an ID of a relay node within a range at which a radio wave arrives by using a setting device to read and write data with the specified ID.SOLUTION: A setting device 20 transmits a call telegram with no ID specification in which response reception intensity gradually decreasing from an initial value is set to relays 12-1 to 12-3 for reception. The relays 12-1 to 12-3 for reception transmit response telegrams including IDs of themselves when the reception intensity is equal to or more than the specified response reception intensity. When the response telegram is received, the setting device 20 acquires an ID of the relay 12-1 for reception included in the response telegram to be registered, transmits a sleep request telegram to the registered relay 12-1 for reception to suspend a telegram transmission operation. When registration of all the IDs of the relays 12-1 to 12-3 for reception within a range at which a radio wave from the setting device 20 arrives is terminated, a restoration telegram is transmitted to the relays 12-1 to 12-3 for reception to release suspension of the telegram transmission operation.SELECTED DRAWING: Figure 1