METHOD FOR EVALUATION OF COSTS FOR INSTALLATION AND OPERATION OF WIRELESS SENSOR NETWORK FOR STATE MONITORING OF TARGET STRUCTURE

PROBLEM TO BE SOLVED: To provide a method for evaluation of costs for installation and operation of a wireless sensor network that can minimize costs including an initial investment cost (relay installation cost) and an operational cost (battery consumption cost and battery replacement work cost) but excluding costs for installation of sensor and gateway that are considered to be sunk costs.SOLUTION: A method for evaluation of costs for installation and operation of a wireless sensor network for monitoring a condition of a target structure uses a near-optimal solution based on a Lagrangian heuristic method to design a sensor network, with respect to the wireless sensor network that transfers data obtained by multiple sensors 3 arranged within a target structure to a gateway 4 through the sensors and/or a relay and collects the transferred data at a management station 6, after formulation as a mathematical programming problem so as to minimize a sum total of costs for installation of the relay, for consumption of a battery for driving the sensors and the relay and for replacement work of the battery.