JP6929814B2 - Alarm device - Google Patents

Description

The present invention relates to an alarm device. In particular, it relates to an alarm device for maintaining safety in field work.

For the maintenance and management of safety in the work environment at the site, it is important to build a management system by humans, which is the awareness of the workers themselves and the visual monitoring by the site supervisor. Furthermore, in order to ensure higher safety, it is known to establish a system for assisting a human management system.

For example, in Patent Document 1, IDTAG and TAG reader are used, IDTAG is given to a worker and tools / materials used for work, data including each certification code is read by the TAG reader, and the result of the read data is determined. It describes work safety management and instruction / alarm systems that issue instructions and alarms.

Japanese Unexamined Patent Publication No. 2008-146302

However, in the management using IDTAG and TAG reader, it is not preferable to assign IDTAG to all the materials used at the work site and manage them from the viewpoint of cost and labor. In particular, it is not preferable to spend a huge amount of cost and labor on the temporary structure used at the work site because it not only increases the cost of the entire construction but also extends the construction period. On the other hand, if the management of temporary buildings is insufficient, there arises a problem that it becomes difficult to maintain the safety of workers. Since the installation location and installation condition of temporary structures may change frequently during work, it is necessary for workers to always share information related to temporary structures, but information sharing is temporary. It may not be done. As a result, there is a problem that another worker does not notice that the installation location of the temporary structure has changed, and in some cases, the safety of the worker cannot be maintained.

An object of the present invention is to determine the state of a temporary structure provided at the site in order to maintain safety in the field work, and when a person enters the restricted area at the site, that is the restricted area. It is to provide an alarm device that can warn a person of something.

As a result of diligent studies on the above issues, the present inventor obtains information on the state of the site and compares it with the information on the dangerous state of the temporary structure provided at the site to determine whether or not there is an exclusion zone on the site. The present invention has been completed by finding that it is possible to maintain safety in on-site work by issuing a warning when a person enters an area determined to be an exclusion zone. ..
That is, the present invention is the following alarm device.

The alarm device of the present invention for solving the above problems is an alarm device for maintaining safety in on-site work, and is an information acquisition unit for acquiring information on the state of the site and a temporary structure provided at the site. Based on the results of the Danger Information Storage Department, which stores information related to the dangerous state, the Analysis Department, which compares the information obtained by the Information Acquisition Department with the information stored in the Danger Information Storage Department, and the results of the Analysis Department, It is characterized by having a determination unit for determining the presence or absence of an off-limits area and a warning unit for issuing a warning when a person enters the off-limits area determined by the determination unit.

The alarm device of the present invention first acquires the state of the site as image data, compares the obtained image data with the information stored in the danger information storage unit in advance, and analyzes and determines the site. Identify the off-limits area in. It issues a warning when a person enters this specified exclusion zone. This makes it possible to assist the sharing of information between workers involved in safety management of temporary structures and maintain safety in on-site work.

Further, in one embodiment of the alarm device of the present invention, the temporary structure is characterized by being a scaffold and a handrail.
According to this feature, it is possible to determine the exclusion zone related to the scaffolding and the handrail and to make it a target of warning. Scaffolding and handrails are particularly frequently assembled and disassembled. Therefore, it is possible to maintain further safety in the field work.

Further, in one embodiment of the alarm device of the present invention, the warning unit is characterized by vibration or sound.
According to this feature, by using vibration or sound as a warning, the operator can immediately recognize the warning.

Further, as one embodiment of the alarm device of the present invention, a danger avoidance information storage unit for storing information related to danger avoidance means for avoiding danger at the site is provided, and the exclusion zone is determined by the judgment unit. It is said that it has a warning stop means to stop the warning by the warning section when it is judged that the danger avoidance means for avoiding the danger is provided by comparing the information with the information stored in the danger avoidance information storage section. It has characteristics.
According to this feature, when it is determined that measures are taken to avoid the entry of people in the restricted area, the warning by the warning unit can be stopped. As a result, it is possible to smoothly proceed with on-site work without issuing an unnecessarily warning.

According to the present invention, in order to maintain safety in on-site work, the state of the temporary structure provided on the site is determined, and when a person enters the off-limits area on the site, that is the off-limits area. It is possible to provide an alarm device capable of warning a person.

It is the schematic explanatory drawing of the alarm device which concerns on 1st Embodiment of this invention. It is a schematic explanatory drawing which shows another aspect of the alarm device which concerns on 1st Embodiment of this invention. It is the schematic explanatory drawing of the alarm device which concerns on 2nd Embodiment of this invention.

Hereinafter, embodiments of the alarm device according to the present invention will be described in detail with reference to the drawings.
The alarm device described in the embodiment is merely exemplified for explaining the alarm device according to the present invention, and is not limited thereto.

The alarm device of the present invention is suitably used in the field where a temporary structure is installed. Here, the temporary construction includes not only relating to a series of work processes of assembling, disassembling, and removing at the site, but also temporarily separating the place from the place where it should be originally arranged. Further, the temporary structure includes the above-mentioned structure related to the temporary structure, for example, a structure that itself is assembled, disassembled, or removed, or a structure that can be moved from a specific place where it should be originally placed. Is done. The movement from a specific place includes not only intentional removal but also unintended movement. The site may be indoors or outdoors, and is not particularly limited. In addition, the work content at the site may be construction, renovation, or repair of a civil engineering building, or may be new installation, expansion, or maintenance of equipment in a factory. In addition, the site in this embodiment exemplifies the work related to the maintenance work of the device in the factory, but is not limited to this.

The alarm device of the present invention is particularly preferably used in the field where scaffolding and handrails are used as temporary structures. In field work, scaffolding and handrails are particularly frequently assembled and disassembled. Therefore, by determining the exclusion zone related to the scaffolding and the handrail and subjecting it to a warning, it is possible to further maintain safety in the field work. In addition, as a temporary structure in this embodiment, the structure which concerns on a scaffolding and a handrail is illustrated, but is not limited to this. For example, an exclusion zone may be determined for an area that is removed during maintenance work, such as a lid of an opening or a protective cover for a rotating device, and may be a target of a warning.

[First Embodiment]
FIG. 1 is a schematic explanatory view showing an alarm device according to the first embodiment of the present invention. Further, FIG. 2 is a schematic explanatory view showing another aspect of the alarm device according to the first embodiment of the present invention.
As shown in FIG. 1, the alarm device 1a according to the present embodiment is installed at the site 100 and has an information acquisition unit 2, a danger information storage unit 3, an analysis unit 4, a judgment unit 5, and a warning unit 6. .. Further, the site 100 in this embodiment includes an apparatus 101, a scaffolding 111 as a temporary structure 110, and a handrail 112. In addition, in FIG. 1 and FIG. 2, the arrow indicated by the alternate long and short dash line indicates that the arrow is connected so as to be controllable or inputtable. Further, the broken line in FIG. 2 indicates a portion related to the temporary structure 110 before installation.

The information acquisition unit 2 is for acquiring information related to the state of the site. The information acquisition unit 2 includes a camera 21 capable of acquiring image data of the entire site as information related to the state of the site. Here, the image data acquired as information may be either a still image or a moving image.

Further, the camera 21 may be fixed to a corner of the site or may be movable up, down, left and right. The movement of the camera 21 is not particularly limited. For example, the flying object to which the camera 21 is attached may be moved, or the support to which the camera 21 is attached may be moved. Further, the range in which the image data is acquired may be changed by the operation of the operator or the like. Here, when the camera 21 is moved to acquire the image data, it is assumed that the position information is incorporated into the object in the acquired image data. When the camera 21 is fixed to one point on the site and image data is acquired, the movement of the object can be grasped by superimposing the image data before and after. On the other hand, when the camera 21 that acquires the image data moves, it is difficult to grasp the movement of the object even if the acquired image data is simply superimposed, so that the position information is given to the object in the image data. By incorporating, it becomes possible to grasp the presence or absence of movement of an object.

Further, the number of cameras 21 is not particularly limited as long as the entire site can be photographed, and may be one camera or a plurality of cameras 21. When a plurality of cameras 21 are provided, it is preferable to install them so that overlapping portions are minimized within the range of the site 100 that can be acquired by each camera 21. Further, it is preferable to install the camera 21 so that there is no blind spot in the range of the site 100.

The danger information storage unit 3 stores information related to the danger state of the temporary structure 110. The information stored in the danger information storage unit 3 is preferably stored in a data format corresponding to the information obtained by the information acquisition unit 2. For example, a format that can be converted into digital data such as numerical values and images is preferable. Further, it is preferable that the danger information storage unit 3 has a ROM for storing digital data. As a result, the information in the danger information storage unit 3 can be used for analysis by various calculation devices. It is preferable that the danger information storage unit 3 is provided with an input means 31 for inputting information from the outside.

The information stored in the danger information storage unit 3 is information related to a situation in which it is determined that there is a safety problem as the temporary structure 110 provided for the site 100. For example, information on the number, shape, and size of the scaffolding 111 and the handrail 112, information on the angle of the provided scaffolding 111 and the handrail 112, and the like can be mentioned.
Further, the information stored in the danger information storage unit 3 also includes information related to an appropriate state of the temporary structure 110. Here, the information relating to the appropriate state of the temporary structure 110 may be information relating to a design drawing or a plan for assembling or disassembling the temporary structure 110 at the target site, and is general regardless of the site. It may be information that is judged to be in an appropriate state. For example, information on the appropriate placement locations of the scaffolding 111 and the handrail 112 of the temporary structure 110 with respect to the device 101, information on the placement intervals of the scaffolding 111s, the handrails 112, or the scaffolding 111 and the handrail 112 is stored and removed. Keep things as information that there is a safety problem.

The analysis unit 4 performs analysis based on the result of comparing the image data obtained by the information acquisition unit 2 with the data stored in the danger information storage unit 3.
The determination unit 5 determines the presence or absence of a dangerous state at the site 100 based on the analysis result of the analysis unit 4.
Further, when the determination unit 5 determines that there is a dangerous state at the site 100, the determination unit 5 identifies and stores the location as the exclusion zone D. The restricted area D may be limited to only the portion determined to be in a dangerous state as a result of analysis, but the restricted area D shall be specified including the vicinity of the portion determined to be in a dangerous state. Is preferable. For example, a portion determined to be in a dangerous state and a range of 1 meter around in the plane direction and the vertical direction can be specified as an exclusion zone D. This makes it possible to issue a warning before a person enters a place that is truly in danger.
The analysis unit 4 and the determination unit 5 are, for example, a computing device that executes a program necessary for comparing numerical values and image data by a processor such as a CPU.
Hereinafter, the contents of the analysis and judgment performed by the analysis unit 4 and the judgment unit 5 will be illustrated.

The analysis unit 4 first recognizes the scaffolding 111 and the handrail 112 itself in the image data obtained by the information acquisition unit 2, and information on the shape and size of the scaffolding 111 and the handrail 112 stored in the danger information storage unit 3. Compare with. Then, the determination unit 5 determines whether or not the material used as the scaffolding 111 or the handrail 112 of the temporary structure 110 is appropriate, and if it is determined that the appropriate material is not used, the location is determined. Identify and remember.

Further, the analysis unit 4 compares the number of scaffolds 111 and handrails 112 in the image data obtained by the information acquisition unit 2 with the information on the number of scaffolds 111 and handrails 112 stored in the danger information storage unit 3. do. Then, the determination unit 5 determines whether or not an appropriate number of scaffolds 111 and handrails 112 are used for the site 100, and if it is determined that the number is insufficient, the missing portion is identified and stored. ..

Further, in the analysis unit 4, information on the arrangement angle of the scaffolding 111 and the handrail 112 in the image data obtained by the information acquisition unit 2 and the arrangement angle of the scaffolding 111 and the handrail 112 stored in the danger information storage unit 3. Compare with. Then, the determination unit 5 determines whether or not the scaffolding 111 and the handrail 112 are arranged at an appropriate arrangement angle with respect to the site 100, and if it is determined that the arrangement angle is not appropriate, the location is specified. Remember.

Further, in the analysis unit 4, information on the arrangement interval of the scaffolding 111 and the handrail 112 in the image data obtained by the information acquisition unit 2 and the arrangement interval of the scaffolding 111 and the handrail 112 stored in the danger information storage unit 3 Compare with. Then, the determination unit 5 determines whether or not the scaffolding 111 and the handrail 112 are at an appropriate arrangement interval, and if it is determined that the arrangement interval is not appropriate, the location is specified and stored.

Further, in on-site work, the temporary structure 110 may be temporarily removed by an operator after being placed in an appropriate state once.
Therefore, the analysis unit 4 and the determination unit 5 shall always analyze and determine the image data obtained by the information acquisition unit 2 and the information stored in the danger information storage unit 3. As a result, it is possible to constantly make a judgment regarding the restricted area at the site 100.

The example relating to the content of the above analysis and judgment is a suitable example for analysis and judgment after the assembly of the temporary structure 110 is completed.

On the other hand, during the assembly or disassembly of the temporary structure 110, when the analysis unit 4 compares the image data obtained by the information acquisition unit 2 with the information stored in the danger information storage unit 3, the analysis unit 4 compares it. It is preferable to use one of the objects in the image data obtained by the information acquisition unit 2 as a reference and perform an analysis related to the increase or decrease of the surrounding objects.
For example, as shown in FIG. 2, when the scaffolding 111a is used as a reference, it is analyzed and determined whether or not the scaffolding 111b is installed at an appropriate arrangement interval based on the information stored in the danger information storage unit 3 after a predetermined time. .. If it is determined that the arrangement interval of the scaffolding 111b with respect to the scaffolding 111a is not appropriate, the location is specified and stored.
In addition, the reference object may be fixed to one, and when a new object is appropriately placed next to the reference object, the new object is used as the next reference for analysis and judgment. There may be.
This makes it possible to determine the exclusion zone in a state where the number and arrangement of the temporary structures 110 are not constant.

As described above, it is preferable that the contents of analysis and judgment in the analysis unit 4 and the judgment unit 5 are in accordance with the situation of on-site work.
In addition, it is assumed that the analysis unit 4 and the judgment unit 5 are provided with the instruction input means 41 capable of externally selecting the content of the analysis and the judgment and inputting the instruction, and work on the content of the analysis and the judgment described above. It may be switched at the discretion of the person.

The warning unit 6 issues a warning when a person enters, based on the information of the restricted area D determined by the determination unit 5. The warning unit 6 includes a warning means 61 and a detector 62 for determining the entry of a person.

The warning means 61 is not particularly limited as long as it is a means for transmitting a warning to a person, but it is particularly preferable that the warning means 61 is due to vibration or sound. For example, in the case of means using light or letters, it is necessary for the worker to see the direction in which the light or letters are indicated at the site, and it is not always immediately transmitted to the worker. Therefore, by using vibration or sound, the operator can be made to immediately recognize the warning.

The detector 62 is a detector for determining the entry of a person into the restricted area D. As the detector 62, a known detector called a so-called motion sensor can be used. Instead of providing the detector 62, the image data obtained by the information acquisition unit 2 may be used, and the analysis unit 4 and the determination unit 5 may determine the entry of a person.

When a person is allowed to enter by the detector 62 in the portion specified as the exclusion zone D by the determination unit 5, the warning means 61 is activated to issue a warning. The time to issue the warning is not particularly limited. After operating the warning means 61 for a predetermined time, the warning means 61 may be automatically stopped, or the warning means 61 may be continuously operated while the detector 62 allows a person to enter.

As described above, the alarm device in the present embodiment acquires the state of the site as image data, compares the obtained image data with the information stored in the danger information storage unit in advance, and performs analysis and judgment. By doing so, the restricted area at the site is specified. By issuing a warning when a person enters the specified exclusion zone, it is possible to maintain safety in the field work.

[Second Embodiment]
FIG. 3 is a schematic explanatory view showing an alarm device according to a second embodiment of the present invention.
As shown in FIG. 3, the alarm device 1b according to the second embodiment is provided with the danger avoidance information storage unit 7 in the alarm device 1a according to the first embodiment. Further, the warning unit 6 has a warning stopping means 63. The same description as that of the first embodiment will be omitted.

The danger avoidance information storage unit 7 stores information related to the danger avoidance means 120 for avoiding danger at the site. Further, the danger avoidance information storage unit 7 is connected to the warning unit 6 so as to be inputtable.
The information stored in the danger avoidance information storage unit 7 is preferably stored in a data format corresponding to the information obtained by the information acquisition unit 2. For example, a format that can be converted into digital data such as numerical values and images is preferable. Further, it is preferable that the danger avoidance information storage unit 7 has a ROM for storing digital data. As a result, the information in the danger avoidance information storage unit 7 can be used for analysis by various calculation devices. It is preferable that the danger avoidance information storage unit 7 is provided with an input means 71 for inputting information from the outside.

The information stored in the danger avoidance information storage unit 7 is information related to a security device that notifies the operator of the exclusion of entry as a danger avoidance means 120 for avoiding danger at the site 100. For example, a conical sign (pylon), a sign for restricting access, a sign tape, a sign rope, and the like can be mentioned.

Here, the warning unit 6 compares the information determined to be the exclusion zone D by the determination unit 5 with the information stored in the danger avoidance information storage unit 7, and the danger avoidance means 120 in the exclusion zone D. When it is determined that is provided, the warning stopping means 63 stops the warning by the warning means 61. As a result, it is possible to stop the warning in the area where measures have been taken to avoid the entry of people, and it is possible to smoothly proceed with the on-site work without issuing an excessive warning.

The above-described embodiment shows an example of an alarm device. The alarm device according to the present invention is not limited to the above-described embodiment, and the alarm device according to the above-described embodiment may be modified without changing the gist described in the claims.

The alarm device of the present invention is suitably used in safety management of on-site work in which a temporary structure is provided.

1a, 1b alarm device, 2 information acquisition unit, 3 danger information storage unit, 31 input means, 4 analysis unit, 41 instruction input means, 5 judgment unit, 6 warning unit, 61 warning means, 62 detector, 63 warning stop means , 7 Hazard avoidance information storage unit, 71 Input means, 100 Sites, 101 devices, 110 Temporary structures, 111, 111a, 111b Scaffolding, 112 Handrails, 120 Hazard avoidance means, D Exclusion zone

Claims (4)

An alarm device for maintaining safety in field work
Information acquisition department that acquires information related to the state of the site,
A danger information storage unit that stores information related to the danger status of temporary structures provided at the site,
An analysis unit that compares the information obtained by the information acquisition unit with the information stored in the danger information storage unit.
Based on the results of the analysis unit, a judgment unit that determines the presence or absence of an exclusion zone at the site, and a judgment unit.
An alarm device comprising a warning unit that issues a warning when a person enters the restricted area determined by the determination unit. The alarm device according to claim 1, wherein the temporary structure is a scaffold and a handrail. The alarm device according to claim 1 or 2, wherein the warning unit is due to vibration or sound. Equipped with a danger avoidance information storage unit that stores information related to danger avoidance measures to avoid danger at the site
When it is determined that the danger avoidance means for avoiding the danger is provided by comparing the information related to the restricted area judged by the judgment unit with the information stored in the danger avoidance information storage unit. The alarm device according to any one of claims 1 to 3, further comprising a warning stop means for stopping the warning by the warning unit.

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