ENVIRONMENT MONITORING SYSTEM, AND DATA COLLECTION DEVICE AND DATA LOGGER FOR USE IN THIS SYSTEM

摘要

PROBLEM TO BE SOLVED: To use a data collection device to temporarily collect a larger amount of measurement data from a specific data logger than usual.;SOLUTION: The data collection device 101 sends transmission request signals individually to data loggers 211, 221, 231. On receiving the transmission request signals, the data loggers 211, 221, 231 send the measurement data obtained from measuring instruments 212, 222, 232 to the data collection device 101. When the measurement data should be obtained intensively from the specific data logger, the data collection device 101 makes the frequency at which the transmission request signals are sent to the specific data logger higher than the frequency at which the transmission request signals are sent to the other data loggers.;COPYRIGHT: (C)2005,JPO&NCIPI