JP2020000402A - Safety belt hooking-forgetting prevention monitoring system - Google Patents

Abstract

To provide a safety belt hooking-forgetting prevention monitoring system capable of preventing the safety hook-forgetting, and enabling a manager to grasp a current position of each worker to ensure safety.SOLUTION: A safety belt hooking-forgetting prevention monitoring system concerning the embodiment includes: a safety belt comprising a safety hook for generating a contact signal, and a safety hooking-forgetting annunciator for emitting an alarm until the contact signal is received to thereby generate and transmit an alarm signal according to the alarm; a first mobile communication terminal carried by a worker wearing the safety belt, receiving the alarm signal, and capable of acquiring data of self-position information and transmitting it; and a second mobile communication terminal carried by a manager, receiving the alarm signal and the data of the position information, displaying the working position of the worker based on these, and displaying whether or not the safety hook is hooked on a support rope.SELECTED DRAWING: Figure 1

Description

  The embodiment of the present invention relates to a safety strap hook forgetting prevention monitoring system that can prevent a worker from forgetting to put on a safety hook worn at a high place such as a construction site and can grasp a current position of each worker. .

  A worker working at a high place is provided with a safety belt with a lifeline, so that even if the worker steps off the scaffold, the person is prevented from falling by the lifeline. In a conventional safety belt, whether or not a safety hook of a lifeline is attached is performed depending on visual confirmation by a manager, a supervisor, or the like from the ground.

JP-A-2002-73125 JP 2002-267252 A

  There is a problem that a worker who cannot be seen from the ground cannot be checked with or without such a conventional safety hook. In addition, it is difficult to perform appropriate management because the worker's current work position cannot be grasped.

  The embodiment provides a safety belt hook forgetting prevention monitoring system that prevents forgetting to put on a safety hook and enables an administrator to grasp the current position of each worker and ensure safety.

  The safety band hook forgetting prevention monitoring system according to the embodiment detects a hook on a support rope and generates a contact signal, and issues an alarm until the contact signal is received, and responds to the alarm. A safety belt including a safety hook forgotten alarm that generates and sends a warning signal, and a worker wearing the safety belt carries the warning signal, receives the warning signal and obtains data of own position information. A first mobile communication terminal capable of transmitting the alarm signal together with the position information data, and an administrator who manages the worker carries the alarm signal and the position information data; Based on the information data, the work position of the worker is displayed, and based on the alarm signal, whether or not the safety hook is hooked on the support rope is displayed. It includes a mobile communication terminal, a. The safety hook forgetting alarm generates the alarm signal when the worker is in a preset first area.

  In the present embodiment, a safety strap hook forgetting prevention monitoring system is realized in which the safety hook can be prevented from being forgotten, and the manager can grasp the current position of each worker and ensure safety.

It is a schematic diagram which illustrates the safety belt hooking forgetting prevention monitoring system according to the embodiment. It is a schematic front view which illustrates a safety belt. It is a schematic diagram which illustrates the state in which the safety hook was hooked on the support rope. It is a schematic diagram which illustrates a safety hook forgetting alarm and a portable communication terminal, and their relationship. It is a schematic diagram explaining the definition of height determination by the portable communication terminal carried by the worker. It is an example of the flowchart for demonstrating operation | movement of the safety belt hook forgetting prevention monitoring system of embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The drawings are schematic or conceptual, and the relationship between the thickness and the width of each part, the size ratio between the parts, and the like are not necessarily the same as actual ones. Further, even when the same part is represented, dimensions and ratios may be represented differently depending on the drawings.
In the specification and the drawings, the same reference numerals are given to the same elements as those described above with respect to the already-described drawings, and the detailed description will be appropriately omitted.

FIG. 1 is a schematic diagram illustrating a safety band hook forgetting prevention monitoring system according to an embodiment.
As shown in FIG. 1, the safety belt hook forgetting prevention monitoring system 100 of the embodiment is used in a work site such as a construction site that involves dangers such as work at a high place. At the work site, several stages of scaffolds F1 and F2 are provided on a construction C on the ground E. The workers W1 to W3 can move to the scaffolds F1 and F2 of each stage using a ladder or the like. In this example, the height of the first-stage scaffold F1 from the ground E is provided at a position higher than the height of the worker, and is, for example, 2 m or more. The height of the second-stage scaffold F2 is 2 m or more from the first-stage scaffold F1. Of course, the scaffold may be further provided in the third stage or more.

  In this example, support ropes RO1 and RO2 are provided substantially horizontally with the scaffolds F1 and F2, respectively, at positions approximately 1 m from the scaffolds F1 and F2 of each step. As described later, the safety hook 1 provided on the safety belt 10 worn by the worker is hooked on the support ropes RO1 and RO2, and even if the worker steps off the foot, the worker falls. To prevent In this example, a handrail RA fixed to the scaffold F1 is provided in a part of the first-stage scaffold F1.

  The setting area A1 is set to include the building C. The setting area A1 includes a safety confirmation area A2. The setting area A1 and the safety confirmation area A2 are virtual areas mapped in accordance with a position measurement system using a beacon installed in advance at a work site. In the setting area A1 and the security confirmation area A2, a plurality of beacons installed are used to map position information such as boundaries of the setting area A1 and the presence or absence of a handrail RA provided in the security confirmation area A2. Note that the term “area” such as the setting area and the safety confirmation area includes a space in the height direction in addition to the two-dimensional area.

  As the setting area A1 and the safety confirmation area A2, any appropriate area can be set. The safety confirmation area A2 is set as, for example, an area having a height exceeding 2 m and having no handrail RA among the setting area A1.

  The setting area A1 and the safety confirmation area A2 may be mapped using GPS signals when the work site is outdoors and each worker can receive a GPS (Global Positioning System) signal. In addition, when a WiFi access point can be used, it may be used, or an IMES (Indoor Messaging System) transmitter may be installed at an indoor work site. Alternatively, a reference point may be set in the setting area A1, and mapping may be performed using three-dimensional XYZ coordinates. In any case, it is assumed that an application program that uses a transmission / reception system of the portable communication terminal 30 carried by the worker or uses data of an acceleration sensor or the like of the portable communication terminal 30 operates.

  The safety band hook forgetting prevention monitoring system 100 is activated every time the workers W1 to W3 wearing the safety band 10 enter the preset setting area A1. When the workers W1 to W3 enter the safety confirmation area A2, the safety belt hooking prevention monitoring system 100 issues a safety securing action confirmation warning (hereinafter, also simply referred to as an alarm) until the safety securing action is completed. . The safety securing action is to hook the safety hook of the safety belt 10 on the support rope.

  The signal relating to the alarm is associated with the worker identification data identifying the workers W1 to W3 via the portable communication terminal 30 carried by each of the workers W1 to W3, and transmitted to the portable communication terminal 50 carried by the manager M. Sent. The administrator M looks at the mobile communication terminal 50 and checks whether or not each of the workers W1 to W3 is in the safety confirmation area A2, and determines whether or not the workers in the safety confirmation area A2 are performing safety ensuring actions. Can be determined.

  In the example of this figure, when the worker W1 enters the setting area A1 from outside the setting area A1, the collection of the data of the own position information is started by the portable communication terminal 30 held by the worker W1. . The data of the position information of the worker W1 is transmitted to the mobile communication terminal 50 of the manager M as appropriate.

  When the worker W1 enters the safety confirmation area A2, an alarm of the safety hook forgetting alarm is issued until the safety hook of the safety belt 10 is hooked on the support rope RO1. The alarm of the safety hook forgetting alarm stops when the worker W1 hooks the safety hook on the support rope RO1.

  The manager M grasps where the worker W1 is in the safety confirmation area A2 and whether or not the safety hook is hooked on the support rope RO1 by receiving data from the portable communication terminal 30 of the worker W1. be able to.

  For example, the position information of the safety confirmation area A2 is set based on laws and regulations such as the Industrial Safety and Health Act (including the Industrial Safety and Health Rules). On a scaffold or the like having a height from the ground of 2 m or more and having no handrail, it is necessary to take a safety securing action by hooking a safety hook on a support rope, and therefore, it is set in the safety confirmation area A2.

  In the example of this figure, the safety confirmation area A2 is an area of the scaffold F1 where the handrail RA is not provided and the entire area of the scaffold F2. The position where the worker W2 is located is a scaffold having a height of 2 m or more, but is outside the safety confirmation area A2 because the handrail RA is provided. On the other hand, the position where the worker W3 is located is a scaffold with a height of 2 m or more and no handrail, and thus is set in the safety confirmation area A2. Note that the safety confirmation area A2 can be set not only at a high place but also at an area where there is a danger of falling, such as around a pit or manhole having a predetermined depth or more.

FIG. 2 is a schematic front view illustrating a safety belt.
As shown in FIG. 2, the safety belt 10 includes a safety hook 1, a rope 2, and a belt 8. The safety hook 1 is connected to one end of a rope 2, and the other end of the rope 2 is connected to a belt 8. A buckle 5 is provided at one end of the belt 8, and the worker wraps the belt 8 around his / her waist, passes the other end of the belt 8 through the buckle 5, and moves the belt 8 at a position corresponding to its waist. 8 is fixed. The belt 8 is provided with a rolip ring 4. The rolip ring 4 is used to prevent a fall through another lifeline when an operator moves between scaffolds having different heights.

  The safety belt 10 further includes a safety hook forgetting alarm 20. The safety hook forgetting alarm 20 is fixed to the outside of the belt 8. A contact sensor 3 a is provided on the inner surface of the safety hook 1, and a wiring 3 b for electrically connecting the contact sensor 3 a and the safety hook forgetting alarm 20 is provided along the rope 2. ing.

FIG. 3 is a schematic view illustrating a state where the safety hook is hooked on the support rope.
As shown in FIG. 3, the contact sensor 3a hooks the safety hook 1 on the support rope RO (RO1 and RO2 in FIG. 1), so that the inner diameter side of the safety hook 1 and the support rope RO are moved by the own weight of the safety hook 1. Detect contact. The safety hook forgetting alarm 20 receives the contact signal of the contact sensor 3a via the wiring 3b.

  When the portable communication terminal 30 is in the safety confirmation area A2, the safety hook forgetting alarm 20 issues an alarm until a contact signal is received from the contact sensor 3a. The warning may be a warning sound such as a buzzer sound, or a voice message. It is preferable that the alarm be set to a volume, a pitch, or the like that can alert the worker sufficiently at the construction site. The warning may be changed such that the volume, the type of the warning sound, and the warning message are changed every time after the start of the issuance, so that the warning level is imminent.

FIG. 4 is a schematic diagram illustrating a safety hook forgetting alarm, a portable communication terminal, and a relationship therebetween.
As shown in FIG. 4, the safety hook forgetting alarm device 20 includes a speaker 22 and a power switch 24. The safety hook forgetting alarm 20 issues an alarm by the speaker 22 according to the presence or absence of a contact signal from the contact sensor 3a of the safety hook 1. The power switch 24 is provided to reduce consumption of a battery (not shown) for supplying power for operation when the safety hook forgetting alarm 20 is stored. Therefore, during use, the power switch 24 is always on.

  The portable communication terminal 30 is carried by each worker. The mobile communication terminal 30 is, for example, a so-called smartphone. The mobile communication terminal 30 may be a dedicated terminal or the like for the present system. The mobile communication terminal 30 wirelessly communicates with the safety hook forgetting alarm device 20, receives radio waves and the like of the position information measurement system, processes data of its own position information, and wirelessly communicates with the other mobile communication terminals 50. Send and receive data. It is preferable that the mobile communication terminal 30 incorporates an acceleration sensor or the like according to the type of the position information measurement system or for detecting a fall of an operator described later.

  The mobile communication terminal 50 carried by the administrator wirelessly transmits and receives data to and from the mobile communication terminal 30 of each worker. The mobile communication terminal 50 is preferably a computer terminal having a relatively large screen for displaying a large number of information such as identification data of each worker, data of position information, and whether or not a safety hook is used. The portable communication terminal 50 is, for example, a so-called tablet or notebook computer. The mobile communication terminal 50 may be a dedicated communication terminal for the present system.

  Each worker carries a pair of the safety hook forgetting alarm 20 and the portable communication terminal 30. The safety hook forgetting alarm 20 and the portable communication terminal 30 communicate with each other. As a communication protocol, for example, BLUETOOTH (registered trademark) can be used.

  When the mobile communication terminal 30 enters the setting area A1, the mobile communication terminal 30 transmits a power activation command to the safety hook forgetting alarm device 20. The safety hook forgetting alarm 20 that has received the power activation command is turned on and is in an operable state.

  When the mobile communication terminal 30 enters the safety confirmation area A2, the portable communication terminal 30 transmits a safety confirmation activation command to the safety hook forgetting alarm device 20. The safety hook forgetting alarm 20 that has received the safety confirmation activation command supplies power to the contact sensor 3a. Until the safety hook forgetting alarm device 20 receives a contact signal from the contact sensor 3a, it issues an alarm and transmits a signal to the effect that the alarm is being issued to the mobile communication terminal 30.

  The mobile communication terminal 30 includes, in the mobile communication terminal 50 carried by the administrator, information for identifying the worker carrying the mobile communication terminal 30, position information of the worker, and information indicating that the safety hook is not used. And the data containing.

  The administrator's portable communication terminal 50 receives the data including these pieces of information, and displays the position of the worker and the use state of the safety hook. When the safety hook is not used, the administrator can instruct the worker to use the safety hook by using, for example, a telephone function of the mobile communication terminal.

The operation of the safety band hook forgetting prevention monitoring system 100 according to the embodiment will be described.
First, when starting to use the safety band hook forgetting prevention monitoring system 100, mapping is performed on the setting area A1 and the safety confirmation area A2. For example, the same area is set as the setting area A1 from the start of construction to the end of construction. On the other hand, the setting of the safety confirmation area A2 may be changed according to the progress of the construction. For example, the handrail RA (FIG. 1) provided on the scaffold may be changed depending on the progress of the construction, and the area is set accordingly.

  Further, the position information of the installed beacon is added to a map created in advance.

  In the safety belt hooking prevention monitoring system 100 according to the embodiment, in the safety confirmation area A2, the safety assurance action (use of the safety hook) is alerted, and even if the worker is outside the safety confirmation area A2, the worker can perform the work. The administrator can be alerted according to the height of the position (for example, 2 m or more).

FIG. 5 is a schematic diagram illustrating height determination by a portable communication terminal carried by an operator.
The height of the work position of the worker is obtained based on the mounting position of the portable communication terminal 30 and the height data in the position information acquired by the portable communication terminal 30.

  As shown in FIG. 5, assuming that the height H of the work position (scaffold) of the worker W, the mounting height h1 of the mobile communication terminal 30 and the height data hs of the mobile communication terminal 30, H = hs−h1. Can be Here, the mounting position of h1 is set in advance such as a breast pocket or a waist pocket, and h1 is determined based on the height A of the worker W. For example, the mounting position is calculated as h1 = 0.7 × A for a breast pocket and h1 = 0.5 × A for a waist pocket. Before entering the setting area A1, the worker W selects and inputs his / her height A and the location where the portable communication terminal 30 is to be carried into his / her own portable communication terminal 30, whereby h1 is automatically calculated. You. Further, the height data hs can be obtained in real time from the position information of the mobile communication terminal 30, and the information on the height H of the work position (scaffold) of the worker W can be obtained in real time.

A series of operations of the safety band hooking forgetting prevention monitoring system 100 after the above-described initial setting is performed will be described with reference to a flowchart.
FIG. 6 is an example of a flowchart for explaining the operation of the safety band hook forgetting prevention monitoring system of the embodiment.

  As shown in FIG. 6, in step S1, the portable communication terminal 30 carried by the worker detects the position of the worker and acquires the position information.

  In step S2, the mobile communication terminal 30 determines whether or not the mobile communication terminal 30 is in the safety confirmation area A2. When the mobile communication terminal 30 is within the safety confirmation area A2, the process proceeds to step S3. When the mobile communication terminal 30 is not within the safety confirmation area A2, the process proceeds to step S8.

  In step S3, the safety hook forgetting alarm device 20 determines whether the safety hook 1 is hooked on the support rope RO based on whether a contact signal has been received. When the safety hook forgetting alarm 20 has not received the contact signal (when the safety hook 1 is not hooked on the support rope RO), the process proceeds to the next step S4. If the safety hook forgetting alarm device 20 has received the contact signal (the safety hook 1 is hooked on the support rope RO), the process proceeds to step S6.

  In step S4, the safety hook forgetting alarm 20 issues an alarm by not receiving the contact signal. The safety hook forgetting alarm device 20 transmits a signal to the effect that the contact signal is not received to the portable communication terminal 30 of the worker. The mobile communication terminal 30 transmits a signal to the effect that the contact signal is not received to the mobile communication terminal 50 of the administrator.

  In step S5, the mobile communication terminal 30 transmits a signal to the effect that the contact signal of the safety hook is not received to the mobile communication terminal 50 of the administrator. The administrator's portable communication terminal 50 displays the position of the worker and the fact that the safety hook is not used, together with the data for identifying the worker.

  In step S6, the mobile communication terminal 30 determines whether an acceleration greater than a preset acceleration is detected. In this process, it is detected whether or not the worker has crashed from a high place such as a scaffold. If the detected acceleration is equal to or higher than the predetermined acceleration, the process proceeds to step S7.

  In step S7, the worker's portable communication terminal 30 transmits a signal to the effect that the worker has crashed to the manager's portable communication terminal 50. The administrator's portable communication terminal 50 displays the position of the worker and the fact that the worker has crashed, together with the identification data of the worker.

  In step S6, when the detected acceleration is smaller than the predetermined acceleration, the portable communication terminal 30 shifts the processing to the first step S1, and repeats the above-described operation.

  In the process of step S6, a process for excluding a state when the worker jumps up on the spot may be added in order to jump over an obstacle or the like. For example, after detecting the acceleration, the mobile communication terminal 30 performs position detection again, and determines that the worker has crashed when the position in the height direction has changed in the negative direction. As a result of performing the position detection again, when the change in the height direction is smaller than the predetermined value, it is determined that the worker has not fallen, and the process proceeds to step S1.

  In step S2, if the position of the worker is not within the safety confirmation area A2, in step S8, the mobile communication terminal 30 determines whether the height H is a preset height, for example, 2 m or more. judge. As the height H, the value defined in the description of FIG. 5 is used.

  If the height H is 2 m or more, the portable communication terminal 30 shifts the processing to step S6. In other words, even if the worker is outside the safety confirmation area A2 where safety assurance action is required, the worker may be at risk of falling when he is at a high place. Do.

  When the height H is lower than 2 m, the mobile communication terminal 30 shifts the processing to step S1.

  In this manner, the safety band hook forgetting prevention monitoring system 100 alerts the worker when the safety hook is not hooked on the support rope RO, and informs the manager of the position information of each worker and the safety. The securing action can be displayed on the portable communication terminal 50.

The effect of the safety belt hook forgetting prevention monitoring system 100 of the embodiment will be described.
Since the safety band hook forgetting prevention monitoring system 100 according to the embodiment uses the position information measuring system using the mobile communication terminals 30 and 50, the manager can accurately grasp the position of the worker at the site. Can be.

  The safety belt 10 worn by each worker includes a contact sensor 3a that generates a contact signal when the safety hook 1 comes into contact with the supporting rope, a safety sensor 10 that receives the generated contact signal, , Including. Therefore, whether or not the safety hook 1 is in contact with the supporting rope RO is extracted as an electric signal, and the safety hook forgetting alarm device 20 can issue an alarm for preventing the safety hook from being forgotten. Can alert others.

  The safety hook forgetting alarm device 20 can transmit and receive data to and from the mobile communication terminal 30 wirelessly. Then, the mobile communication terminal 30 can acquire the current position information by the position information measuring system. Therefore, the mobile communication terminal 30 can receive the state in which the safety hook forgetting alarm 20 has issued an alarm, and transmit the data to another mobile communication terminal 50 as data associated with the acquired position information.

  The mobile communication terminal 50 carried by the administrator can receive and display data for identifying each worker, data of position information, and data of use / non-use of the safety hook from the mobile communication terminal 30 of each worker. . Therefore, the manager can grasp the work position of each worker and check the use state of the safety hook.

  In the safety band hook forgetting prevention monitoring system 100, the fall of the worker can be detected based on the height of the worker anywhere inside or outside the safety confirmation area A2. Therefore, in the unlikely event that the worker crashes from a high place, the position can be specified and rescue operations can be quickly performed.

  Since the safety confirmation area A2 can be changed according to the progress of the construction, it is necessary to correct the mapping of the safety confirmation area A2 every time a change occurs. However, the map is not changed for some reason, and the map of the safety confirmation area A2 before and after the change may be different. In such a case, if the height of the worker is 2 m or more, perform safety monitoring outside the safety confirmation area A2 before the change, and when the height of the worker is 2 m or more, even when the safety confirmation area A2 should be changed after the change. Can be.

  According to the embodiment described above, it is possible to prevent a safety hook from being forgotten and to realize a safety belt hook forgetting prevention monitoring system that enables an administrator to grasp the current position of each worker and ensure safety. Can be.

  While some embodiments of the present invention have been described above, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. These novel embodiments can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and spirit of the invention, and are also included in the scope of the invention described in the claims and the equivalents thereof. The above-described embodiments can be implemented in combination with each other.

  1 safety hook, 2 rope, 3a contact sensor, 3b wiring, 4 rolip ring, 5 buckle, 8 belt, 10 safety belt, 20 safety hook forgetting alarm, 22 speaker, 24 power switch, 30, 50 mobile communication terminal, 100 Safety band hook forgetting prevention monitoring system

Claims (5)

A safety hook that detects a hook on the support rope and generates a contact signal,
A warning is issued until the contact signal is received, and a safety hook forgetting alarm that generates and transmits an alarm signal according to the alarm,
And a safety belt including
A first mobile communication terminal that can be carried by the worker wearing the safety belt, receive the alarm signal and acquire data of its own position information, and transmit the alarm signal together with the position information data;
The worker who manages the worker carries the warning signal and the data of the position information, and displays the work position of the worker based on the data of the position information, based on the warning signal. A second mobile communication terminal for displaying whether the safety hook is hooked on the support rope,
With
The safety hook forgetting alarm monitor generates the alarm signal when the worker is in a first area set in advance. The first mobile communication terminal,
Includes an acceleration sensor that detects at least vertical acceleration,
When the vertical acceleration detected by the acceleration sensor is equal to or greater than a predetermined threshold,
Regardless of whether or not the contact signal is received,
The monitoring system according to claim 1, further comprising: generating a fall signal indicating that the worker has fallen from a high place, and transmitting data including the fall signal to the second portable communication terminal.   The first mobile terminal is configured to output the crash signal even when the worker is outside the first area, when the height of the work position of the worker is equal to or higher than a predetermined height-specified height. The monitoring system for preventing forgetting to hook a safety belt hook according to claim 2. The first mobile communication terminal,
Obtain own position information by using at least one of position information measurement by GPS, position information measurement by plural beacons, position information measurement by IMES transmitter, and position information measurement by acceleration sensor and gyro sensor. The safety band hooking prevention monitoring system according to any one of claims 1 to 3. The safety hook forgetting alarm is
When the worker carrying the first portable communication terminal enters a second area including the first area, the worker is activated by receiving data including a start signal received from the first portable communication terminal. Item 5. The safety band hook forgetting prevention monitoring system according to any one of Items 1 to 4.

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