| 摘要 |
PROBLEM TO BE SOLVED: To provide an environment monitoring system which can be stably used in a long term at low costs.SOLUTION: An environment monitoring system includes: a plurality of sensor devices each having an environment power generation element and a light emission element; a camera for photographing the plurality of sensor devices in a batch; and an image control device for synthesizing images photographed by the camera in a fixed synthesis period to acquire a synthetic image in each synthesis period, and for detecting a change in an environment from a change in the synthetic image. |
