| 摘要 |
PROBLEM TO BE SOLVED: To provide a system that detects an abnormal state from a communication state of a sensor node group installed at a variety of places.SOLUTION: A cloud server including an abnormal state detection unit obtains sensing data from a sensor node via a network at a prescribed period. The abnormal state detection unit extracts a sensor node having failed in acquisition of sensor data referring to sensor data obtained during the period by a sensor data processing unit and stored in a sensor data storage unit and an attribute stored a sensor attribute storage unit explained later, and detects whether there is an abnormal state from deviation of attributes of failed sensor nodes. |
