Environmental change detecting system, environment change detection method, and the environment change detection program

Environmental change detection system detecting device does not have a communication function, the environment change detecting method, and provides an environment change detection program. Environmental change detection system 1 includes a power supply unit 300, a detection unit 310 for detecting the state of the environment within the detection range, the determination section 320 changes in the environment within the detection range, depending on the determination result of the determination unit 320 It features a power load modulation section 330 that performs modulation control to consume the load current to the power supply unit 300 having the sense current data including the modulated load current by modulation control, a data detection unit 100 for measuring the current data particular a data conversion unit 110, a separation unit 210 for separating the modulation current data of the power supply unit 300 from the digital power data, the changes in the environment by analyzing the modulated current data separation section 210 are separated for converting the digital power data and a analysis part 220.