| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless data collection system capable of more simply, inexpensively and safely collecting data than conventional ones. SOLUTION: The wireless data collection system receives wireless data signals containing data transmitted from a plurality of wireless terminal devices 10-1 to 10-N, respectively, for acquiring data via a base station device 20 for collecting the data. The base station device 20 serving as a transmitter transmits a reference signal including reference time information. The respective terminal devices 10-1 to 10-N receive the reference signals and transmit the wireless data signals including the acquired data at different time points corresponding to the respective devices 10 based on the reference time information included in the reference signal. COPYRIGHT: (C)2006,JPO&NCIPI
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