| 摘要 |
PROBLEM TO BE SOLVED: To enable a data recording device to reduce data capacity for transmitting to a data collection device and to lower power consumption, as well as to enable the data collection device to confirm data normality, in a physical survey system.SOLUTION: A data recording device includes: a first radio transmission/reception unit for transmitting/receiving a radio signal to/from a data collection device; and a second radio transmission/reception unit for transmitting/receiving a radio signal to/from a data recording device adjacent to the data recording device. Correlation processing is performed with adjacent oscillatory wave data held by the adjacent data recording device received via the second radio transmission/reception unit and oscillatory wave data held by the data recording device, and a result of the correlation processing is transmitted to the data collection device via the first radio transmission/reception unit.SELECTED DRAWING: Figure 2 |
