| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless relay system which relays information with a plurality of wireless communication devices and can shorten a transmission time of the information as possible while extending an operable time.SOLUTION: A wireless relay system in which a plurality of wireless communication devices (stations) can relay information is such that: the respective stations include a solar cell and a power storage body for storing power generated by the solar cell in a power supply unit for supplying the power for the operation; and the respective stations perform intermittent operation alternately repeating a wake-up period W of performing transmission/reception and a sleep period S of not performing transmission/reception and can control a length of the wake-up period W to be autonomously varied according to the power generation voltage of the solar cell, the voltage of the power storage body, and/or time zones in a day while starting the wake-up period W with time synchronization. |
