| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication method, a communication system, a central device and a computer program, transmitting data acquired by a sensor to the central device through a terminal device.SOLUTION: A determination unit 14 in a central device 10 refers to battery information in a terminal management DB 13b, to determine whether there is any terminal device whose residual battery amount is a predetermined value or lower. If there is a terminal device having the residual battery amount of the predetermined value or lower, a search unit 15 searches for another terminal device located in a short distance from the terminal device. If a search for the other terminal device located in a short distance is successful, an instruction unit 16 makes the another terminal device search for a data transmission device 30 that performs short-range radio communication with the terminal device having the residual battery amount of the predetermined value or lower, and transmits an instruction to connect communication with the another terminal device. |
