Indoor space safety monitoring device, indoor space safety monitoring method, and indoor space safety monitoring system

Abstract

To provide a workman, who passes an indoor space, with an event, which is associated with each workman and depends on the contents of monitoring, at a time of monitoring safety in the indoor space where a moving body travels.SOLUTION: A safety monitoring device of an indoor space is incorporated in a moving body 30 which travels in an indoor space 100 shielded from a radio wave in the sky. A safety monitoring system of an indoor space includes a plurality of base stations 36 and 37, each of which wirelessly receives a positioning signal 28 containing a tag ID sent from an origination tag 27 owned by a workman 110 who passes the indoor space 100, a position detection unit 31 that uses positioning signals 28, which contain the same tag ID and are received by the respective base stations 36 and 37, to detect a relative position of the origination tag 27 with respect to the moving body 30, and alarm transmission units 32 and 33 that, when the relative position lies within an alarm area 140 defined around the moving body 30, wirelessly transmit an alarm signal which is addressed to the workman 110 who owns the origination tag 27 of the tag ID contained in the positioning signals 28 used to detect the relative position.SELECTED DRAWING: Figure 1B

Claims

1. Multiple base stations are installed on a mobile vehicle traveling in an indoor space shielded from radio waves above, and wirelessly receive positioning signals including a tag ID that identifies a transmitting tag from a transmitting tag held by a worker passing through the indoor space. A position detection unit that uses the positioning signals, each of the multiple base stations, that include the same tag ID, to detect the relative position of the transmitting tag to the moving object, When the relative position is inside an alarm area set around the moving body, an alarm transmission unit wirelessly transmits an alarm signal to the worker holding the transmit tag of the tag ID included in the positioning signal used to detect the relative position, Equipped with, Safety monitoring device for indoor spaces.

2. The safety monitoring device for an indoor space according to claim 1, wherein the alarm area is set along the direction of travel of the moving body.

3. The indoor space safety monitoring device according to claim 1, wherein the alarm area is set to a wider area in the direction of travel of the moving body as the travel speed of the moving body increases.

4. The safety monitoring device for an indoor space according to claim 1, wherein the alarm area is set to an area excluding the safety passage reserved for workers in the indoor space.

5. The indoor space safety monitoring device according to claim 1, wherein the base station is positioned in front of the mobile body in the direction of travel.

6. The indoor space safety monitoring device according to claim 1, wherein the alarm signal includes information on the alarm level to be notified to the worker at the destination, and the alarm transmitting unit transmits the alarm signal including information on the alarm level corresponding to the distance from the moving object to the relative position.

7. The indoor space safety monitoring device according to claim 6, further comprising a distance measuring unit that uses a sensor provided on the mobile body to measure the distance to the nearest worker located in front of the mobile body in the direction of travel at a period shorter than the reception period of the positioning signal by the base station, and when there is a transmitting tag whose relative position is inside the alarm area, the alarm transmitting unit transmits the alarm signal to the worker holding the transmitting tag whose relative position in the alarm area is closest to the mobile body, including information on the alarm level corresponding to the updated distance each time the distance measured by the distance measuring unit is updated.

8. The safety monitoring device according to any one of claims 1 to 7, further comprising a user interface unit that outputs information on the relative position detected by the position detection unit.

9. Multiple base stations of a mobile vehicle traveling in an indoor space shielded from radio waves in the air wirelessly receive a positioning signal, including a tag ID that identifies a transmitting tag, from a transmitting tag held by a worker passing through the indoor space. Using the positioning signals, each of the multiple base stations, that include the same tag ID, the relative position of the transmitting tag to the moving object is detected. If the detected relative position is within the alarm area set around the moving object, an alarm signal is transmitted wirelessly to the worker holding the transmitting tag of the tag ID included in the positioning signal used to detect the relative position. Methods for monitoring safety in indoor spaces.

10. A transmitting tag, which is held by a worker passing through an indoor space shielded from radio waves from above, and which transmits a positioning signal including an identification tag ID, A safety monitoring device according to any one of claims 1 to 7, which wirelessly receives the positioning signal, An alarm unit that outputs an alarm notifying the approach of a moving object traveling in the indoor space when the alarm signal transmitted by the alarm transmission unit of the safety monitoring device is addressed to the worker holding the transmission tag, An indoor space safety monitoring system equipped with [features / equipment].

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