Detection system

Abstract

To provide a detection system capable of early and surely detecting an entry or approach to an off limits area on a construction site.SOLUTION: A detection system (1) of the present invention comprises: a detection device (10) which is held by a worker on a construction site and detects that the worker enters a detection area (40) around a heavy machine (20); and a positional information server (30) which transmits to the detection device positional information of a first detection area which is set around the heavy machine and positional information of a second detection area which includes the first detection area and wider than the first detection area. The detection device (10) outputs second warning information in the case of entry to the second detection area, outputs first warning information in the case of entry to the first detection area and notifies the positional information server (30) of the entry to the first detection area and in the case of the entry to the first detection area from the detection device (10), the positional information server (30) transmits warning information to the heavy machine (20).SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a detection system that detects the approach of a worker to heavy machinery at a construction site. [Background technology]

[0002] Conventionally, technologies have been proposed to ensure the safety of workers at construction sites by notifying them when they approach heavy machinery. A system that detects when a worker approaches heavy machinery, as shown in Fig. 4, can ensure the safety of work at a work site by detecting a worker approaching heavy machinery using wireless signals, lasers, or camera images and notifying the operator of the heavy machinery.

[0003] For example, Patent Document 1 proposes a heavy machinery approach warning device in which a receiving device installed on heavy machinery receives a radio signal transmitted by a radio tag carried by the worker, thereby detecting when a worker is approaching the heavy machinery and notifying the operator of the heavy machinery.

[0004] Also, Patent Document 2 proposes an intruder detection device that detects intruders into a restricted area by processing images captured by a camera installed in a position overlooking the restricted area. At a construction site, by setting a specific area around heavy machinery as a restricted area, it is possible to detect when a worker enters the restricted area and to notify the operator of the heavy machinery. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2007-120110 A [Patent Document 2] JP 2006-252248 A Summary of the Invention [Problem to be solved by the invention]

[0006] The devices in Patent Documents 1 and 2 notify the operator of a heavy machine when a worker approaches the machine or enters a restricted area around the machine, but do not notify the worker himself of the approach to the machine or the entry into a restricted area. Although it is possible for the detection device to notify the worker of the approach of the machine using sound or light, the worker is constantly moving around the construction site, so there are cases where the worker cannot recognize the sound or light.

[0007] The present invention has been made to solve the above-mentioned problems, and aims to provide a detection device that enables each worker at a construction site or the like to quickly and reliably detect intrusion into or approaching restricted areas at a construction site. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the detection system of the present invention includes a detection device held by a worker at a construction site and configured to detect when the worker enters a detection area set around a heavy machine at the construction site, and a location information server configured to set a first detection area set in a predetermined range around the heavy machine and a second detection area set in a range including the first detection area but wider than the first detection area based on location information of the heavy machine, and to transmit location information of the first area and the second area to the detection device, and the detection device detects when the worker enters the second detection area by using the location information of the second detection area and the location information of the detection device. and when it detects that the detection device has entered the first detection area, using position information of the first detection area and position information of the detection device, outputting first warning information indicating that the detection device has entered the first detection area and notifying the position information server of the intrusion into the first detection area, and when it detects that the detection device has entered the first detection area, the position information server is configured to transmit warning information indicating that the detection device has entered the first detection area to the heavy machinery when notified by the detection device of the intrusion into the first detection area. Effect of the Invention

[0009] According to the present invention, it is possible to provide a detection system that enables each worker at a construction site or the like to quickly and reliably detect intrusion into or approach to restricted areas at the construction site. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 shows an example of the configuration of a detection system using a detection device according to an embodiment of the present invention. [Diagram 2] FIG. 2 shows an example of the configuration of a detection area according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a diagram for explaining a detection area of ​​the detection system according to the embodiment of the present invention. [Figure 4] FIG. 4 shows another example of the configuration of the detection area according to the embodiment of the present invention. [Diagram 5] FIG. 5 is a diagram for explaining an operation sequence of the detection system according to the embodiment of the present invention. [Figure 6] FIG. 6 is an example of an operation flow of the detection device according to the embodiment of the present invention. [Figure 7] FIG. 7 shows an example of the configuration of a conventional system that detects when a worker approaches heavy machinery. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the preferred embodiments. However, the present invention is not limited to the following embodiments.

[0012] <Detection system configuration> 1 shows an example of the configuration of a detection system using a detection device according to an embodiment of the present invention. The detection system 1 of this embodiment is composed of a detection device 10 that detects the intrusion of a worker 2 into a predetermined detection area 40 around a heavy machine 20, and a location information server that is connected to the detection device 10 via a communication network 100 and sets a predetermined area around the heavy machine 20 as the detection area 40 using location information of the heavy machine 20.

[0013] In the detection system 1 of Figure 1, a detection device 10 carried by each worker 2 is configured to detect when the worker 2 enters a specified detection area 40 around the heavy equipment 20, and to output warning information based on the detection result.

[0014] The location information server 30 receives location information of the heavy machinery 20 and materials such as the pylons 50 installed around the heavy machinery via the communication network 100, sets a predetermined area around the heavy machinery 20 as a detection area 40 using the received location information, and transmits location information of the set detection area to the detection devices 10 carried by each of the workers 2 via the communication network 100. The location information of the heavy machinery 20 and materials such as the pylons 50 installed around the heavy machinery can be obtained by receiving, via the communication network 100, location information output by a position detection device such as a GPS sensor installed on the heavy machinery 20, the pylons 50, and other materials.

[0015] The detection device 10 receives location information of the detection area generated in the location information server 30, and detects that the detection device 10 has entered the detection area 40, using the location information of the detection area received from the location information server 30 and the location information of the detection device 10 that it has detected itself. When the detection device 10 has entered the detection area 40, it notifies the worker 2 holding the detection device 10 of warning information such as an image, sound, or vibration.

[0016] The warning information output by the detection device 10 may be changed according to the distance between the detection device 10 and the detection area 40. For example, the notification interval of the sound or vibration may be shortened as the distance between the detection device 10 and the detection area 40 becomes shorter, or the sound or vibration may be increased as the distance between the detection device 10 and the detection area 40 becomes shorter. Furthermore, the warning information output by the detection device 10 may be changed according to the direction of the detection device 10 with respect to the detection area 40.

[0017] <Detection device configuration> The detection device 10 includes a GPS unit 11 which is a location information acquisition unit that acquires location information of the detection device 10, a wireless unit 12 for communicating with the location information server 30 via a communication network 100, a control unit 13 which performs various processing, a memory unit 16 which stores the location information of the detection area, attribute information of the detection area, attribute information of the worker, location information of the detection device 10, etc., a display unit 17 which displays the location information of the detection area and the location information of the detection device 10, and an output unit 18 which outputs warning information such as images, sounds, and vibrations.

[0018] The control unit 13 functions as an area information acquisition unit 14 that acquires location information of the detection area from the location information server 30, and an intrusion detection unit 15 that detects intrusion into the detection area 40. The detection device 10 can be realized by a computer equipped with a CPU, a memory, and an interface.

[0019] <Detection area configuration> 2 shows an example of the configuration of a detection area according to an embodiment of the present invention. The detection area 40 in the detection system 1 of this embodiment is composed of a no-entry area (40-1) (first detection area) set in a predetermined range around the heavy equipment 20, and a no-approach area (40-2) (second detection area) set in a predetermined range including the no-entry area (40-1) and larger than the no-entry area (40-1).

[0020] In the detection system 1 of this embodiment, two detection areas are set: a no-entry area (40-1) and a no-approach area (40-2). When a worker 2 enters the no-approach area (40-2), the detection device 10 held by the worker 2 outputs warning information (second warning information). When the worker 2 moves further and enters the no-entry area (40-1), the detection device 10 held by the worker 2 outputs warning information (first warning information) and the heavy equipment 20 also outputs warning information.

[0021] In this embodiment, a detection device held by a worker 2 detects approach to heavy machinery 20, and further, by detecting in two stages using two detection areas 40, each worker at a construction site, etc. can detect intrusion into or approach to restricted areas at the construction site early and reliably.

[0022] In the detection system 1 of this embodiment, the detection device 10 may preset attribute information of the worker 2 who has entered the detection area 40 and attribute information of the heavy equipment 20 and the detection area 40, and determine whether or not to output warning information based on the interrelationship between the two.

[0023] For example, if the worker 2 is a specific worker who can enter the detection area 40 of the heavy equipment A, such as a site supervisor or a work manager, it is possible to set not to output warning information even when the worker 2 enters the detection area 40 of the heavy equipment A. This makes it possible to avoid the output of unnecessary warning information that would hinder smooth work at the construction site. Even when multiple heavy equipment 20 are working at the construction site and different workers are allowed to enter the detection area 40 of each of the multiple heavy equipment, it is easy to determine whether or not to output warning information in the detection device 10.

[0024] 3 is a diagram for explaining detection areas of the detection system according to the embodiment of the present invention. In the detection system 1 of the present embodiment, two detection areas are set: a no-entry area (40-1) and a no-approach area (40-2).

[0025] In Fig. 3(a), the detection device (10-2) does not enter the no-approach area (40-2) and therefore does not output any warning information. On the other hand, the detection device (10-1) has entered the no-approach area (40-2), but this detection device (10-1) is a specific worker who is allowed to enter the detection area 40 of the heavy equipment A, so no warning information is output. This makes it possible to avoid the output of unnecessary warning information that would hinder smooth work at the construction site.

[0026] 3(b), the detection device (10-2) outputs warning information (intrusion warning #2) because an object has entered a prohibited approach area (40-2). By setting the prohibited approach area (40-2) around the prohibited entry area (40-1), it is possible to quickly and reliably detect an approach to the prohibited entry area (40-1) and prevent an intrusion into the prohibited entry area (40-1).

[0027] In addition, in Fig. 3(b), when the detection device (10-2) is in the stage of entering the no-approach area (40-2), the heavy equipment 20 does not output warning information. This makes it possible to avoid outputting unnecessary warning information that may hinder smooth work at the construction site.

[0028] 3(c), the detection device (10-2) outputs warning information (intrusion warning #1) because the detection device (10-2) has entered a restricted area (40-1). Here, since the restricted area (40-1) is more dangerous than the restricted area (40-2), the interval at which the sound or vibration is notified for the warning information (intrusion warning #1) may be made shorter or the sound or vibration may be made louder than the warning information (intrusion warning #2).

[0029] 3(c), when the detection device (10-2) enters the restricted area (40-1), warning information is also output to the heavy equipment 20. This warns the operator of the heavy equipment 20 that a worker who is prohibited from entering the restricted area (40-1) has entered the restricted area (40-1), thereby making it possible to prevent a serious accident from occurring at the work site.

[0030] <Detection area configuration example> Fig. 4 shows another configuration example of a detection area according to an embodiment of the present invention. As shown in Fig. 4(a), the position information of a detection area 40 can be created by acquiring the position information of materials such as heavy machinery 20 and pylons 50. Here, as shown in Fig. 4(b), the detection area 40 may be set by setting a marker 60 on a map in the position information server 30. Setting the detection area 40 by placing the marker 60 on a map makes it possible to quickly change the detection area 40.

[0031] 4(c), a worker carrying a position detection device such as a GPS sensor may move to a predetermined position 70 around the heavy equipment 20 and transmit position information from there to obtain position information of the detection area 40. By transmitting position information from a worker at the work site, the detection area 40 can be flexibly set according to the actual conditions of the work site.

[0032] <Detection system operation sequence> Fig. 5 is a diagram for explaining the operation sequence of the detection system according to the embodiment of the present invention. Fig. 5 shows the operation sequence when a detection area is set by installing materials such as pylons 50 at predetermined positions around heavy equipment 20 and acquiring position information of the materials such as heavy equipment 20 and pylons 50.

[0033] A position detection device such as a GPS sensor installed on materials such as heavy machinery 20 and pylon 50 transmits detected position information to the position information server 30. The detection device 10 also detects position information (steps 400-404).

[0034] The location information server 30 uses location information of the heavy equipment 20, pylon 50, etc. to set up no-entry areas set in a predetermined range around the heavy equipment 20 and no-approach areas set in a predetermined range including the no-entry areas, and transmits location information of the set detection areas to the detection device 10 (steps 405, 406).

[0035] The detection device 10 detects that the detection device 10 has entered a prohibited area, using the location information of the detection area received from the location information server 30 and the location information of the detection device 10 that it has detected itself. When the detection device 10 has entered a prohibited area, it outputs warning information #2 such as an image, sound, or vibration to notify the worker 2 holding the detection device 10 (steps 500, 501).

[0036] The detection device 10 detects that the detection device 10 has entered a restricted area, using the location information of the detection area received from the location information server 30 and the location information of the detection device 10 that it has detected itself. When the detection device 10 has entered a restricted area, it outputs warning information #1 such as an image, sound, or vibration to notify the worker 2 holding the detection device 10 (steps 502, 503).

[0037] When the detection device 10 enters a restricted area, the detection device 10 transmits warning information indicating that the detection device 10 has entered a restricted area to the location information server 30 (step 504). This warning information may include location information of the detection device 10.

[0038] The location information server 30 transmits warning information indicating that the detection device 10 has entered the restricted area 40-1 to the heavy equipment 20, and the heavy equipment 20 outputs the received warning information (steps 505, 600). The location information server 30 may use the location information of the detection device 10 to confirm that the detection device 10 has entered the restricted area 40-1.

[0039] Detection of the position information of the heavy equipment 20, the pylon 50, etc. is continuously performed, and the detected position information is transmitted to the position information server 30. When there is a change in the position information of the heavy equipment 20, the pylon 50, etc., the position information server 30 updates the detection area information and transmits the updated detection area information to the detection device 10 (steps 700-705).

[0040] <Detection device operation flow> 6 is an example of an operation flow of the detection device according to the embodiment of the present invention, which is an operation flow of the detection device 10 in the operation sequence of FIG.

[0041] The detection device 10 detects the location information of the detection device 10, and receives the location information of the detection area from the location information server 30 (S1-1, S1-2).

[0042] The detection device 10 compares the position information of the detection area with the position information of the detection device 10, and determines whether the detection device 10 has entered the approach-prohibited area (detection area #2) (S1-3, S1-4).

[0043] If the detection device 10 enters a no-approach area (detection area #2) (S1-4: YES), and if the detection area 40 is not an area that the worker holding the detection device 10 can enter (S1-5: NO), the detection device 10 outputs warning information #2 (S1-6).

[0044] On the other hand, when the worker holding the detection device 10 is able to enter the detection area 40, the detection device 10 does not output warning information (S1-5: YES).

[0045] When the detection device 10 enters a restricted area (detection area #1) (S1-7: YES), and when the detection area 40 is not an area that the worker holding the detection device 10 can enter (S1-8: NO), the detection device 10 sends warning information to the location information server 30 and outputs warning information #1 (S1-9, S1-10).

[0046] On the other hand, when the worker holding the detection device 10 is able to enter the detection area 40, the detection device 10 does not output warning information #1 (S1-8: YES).

[0047] In the detection system 1 of this embodiment, two detection areas are set: a no-entry area and a no-approach area. If a worker enters the no-approach area, the detection device held by the worker outputs warning information. If the worker 2 moves further and enters the no-entry area, the detection device 10 held by the worker 2 outputs warning information and the heavy equipment 20 also outputs warning information.

[0048] In this way, the detection device held by the worker 2 detects approach to the heavy machinery 20, and further, by detecting in two stages using two detection areas 40, each worker at a construction site, etc. can detect intrusion into or approach to restricted areas at the construction site early and reliably.

[0049] In the detection system 1 of this embodiment, the detection device may be configured to preset attribute information of a worker who has entered the detection area and attribute information of the heavy machinery and the detection area, and to determine whether or not to output warning information based on the correlation between the two.

[0050] With this configuration, it is possible to avoid outputting unnecessary warning information that would hinder smooth work at a construction site. Even when multiple heavy machines 20 are working at a construction site and different workers are allowed to enter the detection areas 40 of the multiple heavy machines, it is easy to determine whether or not to output warning information in the detection device 10.

[0051] <Modifications of the embodiment> The above describes an embodiment of the location management system of the present invention, but the present invention is not limited to the described embodiment, and various modifications that a person skilled in the art can make within the scope of the invention described in the claims are possible. [Explanation of symbols]

[0052] 1...detection system, 2...worker, 10...detection device, 20...heavy machinery, 30...location information server, 40...detection area, 50...materials (pylon), 60...marker, 100...communication network.

Claims

1. A detection device that is held by a worker at a construction site and detects that the worker has entered a detection area set around a heavy machine at the construction site; a location information server that sets a first detection area set in a predetermined range around the heavy equipment and a second detection area set in a range including the first detection area but wider than the first detection area based on the location information of the heavy equipment, and transmits location information of the first detection area and the second detection area to the detection device; Equipped with The detection device includes: outputting second warning information indicating an intrusion into the second detection area when the detection device detects an intrusion into the second detection area by using position information of the second detection area and position information of the detection device; When the detection device detects an intrusion into the first detection area by using location information of the first detection area and location information of the detection device, first warning information indicating the intrusion into the first detection area is output, and the location information server is notified of the intrusion into the first detection area. It is configured as follows: The location information server, When notified by the detection device that the heavy equipment has entered the first detection area, the heavy equipment transmits warning information indicating that the detection device has entered the first detection area. It is configured as follows: Detection system.

2. The detection device includes: Based on preset attribute information of the worker and the detection area, it is determined whether the worker holding the detection device is a specific worker who can enter the detection area, and if the worker is the specific worker, the first warning information and the second warning information are not output. The detection system of claim 1 .

3. The position information of the first detection area and the second detection area is created based on at least one of the position information of the heavy equipment and the position information of materials at the construction site.

3. A detection system according to claim 1 or 2.

4. The position information of the first detection area and the second detection area is generated using markers on a map.

3. A detection system according to claim 1 or 2.

5. The first warning information and the second warning information are configured to change according to a distance between the detection device and the detection area.

3. A detection system according to claim 1 or 2.

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