| 摘要 |
PROBLEM TO BE SOLVED: To allow acquisition of state information showing a use state of equipment which a person whose safety should be confirmed uses, even for the case where there is no change in the use state of the equipment.SOLUTION: A network interface of a monitoring server 20 periodically transmits an acquisition indication message indicating acquisition of state information of doors 5-1 to 5-3, to a monitoring terminal 10 and receives state information transmitted from the monitoring terminal 10. A wireless LAN interface of the monitoring terminal 10 receives the acquisition indication message transmitted from the monitoring server 20. Door opening/closing sensors 101-1 to 101-3 of the monitoring terminal 10 acquire state information of doors 5-1 to 5-3, in response to reception of the acquisition indication message by the wireless LAN interface. The wireless LAN interface of the monitoring terminal 10 transmits the state information acquired by the door opening/closing sensors 101-1 through 101-3 to the monitoring server 20. |
