| 摘要 |
PURPOSE:To obtain the data collection method capable of preventing missing even when noise is consecutively caused in a propagation path with respect to the data collection method in the data collection system in which data are collected by the polling system at a monitor station from plural observation stations through the use of a single radio line. CONSTITUTION:When a monitor station 10 cannot receive data due to consecutive noise or the like occurred in a propagation path with an observation station 4, the master station 10 changes a path by using, e.g. an observation station 2 for a relay station to collect data. An address code 24 is sent by the monitor station 10 to revise the path and the observation station 2 converts the code into an address code 04 and sends the converted code. The observation station 4 returns the address code 04 and the observation station 2 receives a signal of the address code 04 the same as the sent address code and converts the address code into the set address code 24 and transmits it. The monitor station 10 receives the signal of the code 24 the same as the sent address code to collect data by changing the path. |
