STABILITY EVALUATION DEVICE OF RADIO COMMUNICATION ROUTE, STABILITY EVALUATION PROGRAM, SELECTION DEVICE OF RADIO COMMUNICATION ROUTE AND SELECTION PROGRAM

摘要

PROBLEM TO BE SOLVED: To evaluate stability of a communication route of a radio sensor network also including response capabilities to a future installation state, change of surrounding environment, and change of use conditions.SOLUTION: A command for transmitting test radiowave with two frequencies is output to a radio sensor terminal which functions as a data collection station among a plurality of radio sensor terminals, measurement results of received power of test radiowaves for every frequency of each of the plurality of radio sensor terminals are collected, whether or not reception levels of the test radiowaves for every frequency for every combination of the radio sensor terminals are equal to or more than the lowest threshold of the reception level is determined, whether or not difference of reception levels of the test radiowaves for every frequency for every combination of the radio sensor terminals is equal to or less than a threshold of reception level difference is determined, the combination of the radio sensor terminals whose reception level of the received power is equal to or more than the lowest threshold of the reception level and the level difference of the reception levels for every frequency is equal to or less than the threshold of the reception level difference for both of the two frequencies is selected as the radio communication route.