JP6936546B2 - Safety belt hook forgetting prevention monitoring system - Google Patents

Description

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

Workers working at heights should be equipped with a safety belt with a lifeline to prevent them from crashing due to the lifeline even if they step off the scaffolding. In the conventional safety belt, whether or not the safety hook of the lifeline is attached depends on visual confirmation by a manager, a supervisor, etc. from the ground.

JP-A-2002-73125 Japanese Unexamined Patent Publication No. 2002-267252

There is a problem that it is not possible to confirm the worker who cannot be seen from the ground with or without the conventional safety hook attached. In addition, it is difficult to grasp the current working position of the worker and perform appropriate management.

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

The safety band hook forgetting prevention monitoring system according to the embodiment issues a safety hook that detects hooking on a support rope and generates a contact signal, and issues an alarm until the contact signal is received, and also issues the alarm . A safety band including a safety hook forgotten alarm that generates and transmits a signal to the effect that the data is being issued, and a signal that the worker wearing the safety band carries the safety band and issues the alarm is received. A first mobile communication terminal capable of acquiring data of its own position information and transmitting a signal indicating that the alarm is issued together with the data of the position information, and an administrator who manages the worker carry it. Then, the signal indicating that the alarm is issued and the data of the position information are received, the working position of the worker is displayed based on the data of the position information, and the alarm is issued. A second mobile communication terminal that displays whether or not the safety hook is hooked on the support rope based on a signal is provided. When the worker enters the preset first area, the first mobile communication terminal activates the safety hook forgotten alarm. Wherein said safety hook over forget alarms activated by the first mobile communication terminal, when the worker is in the first area, that give generates a signal indicating that issued the alarm.

In the present embodiment, a safety belt hook forgetting prevention monitoring system is realized, which prevents forgetting to hook the safety hook and allows the administrator to grasp the current position of each worker and ensure safety.

It is a schematic diagram which illustrates the safety belt hook forgotten prevention monitoring system which concerns on embodiment. It is a schematic front view which illustrates the safety belt. It is a schematic diagram which illustrates the state in which the safety hook is hooked on the support rope. It is a schematic diagram which illustrates the safety hook forgotten alarm, the mobile communication terminal, and the relationship between them. It is a schematic diagram explaining the definition of the height determination by the mobile communication terminal carried by an operator. This is an example of a flowchart for explaining the operation of the safety belt hook forgetting prevention monitoring system of the 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 width of each part, the ratio of the sizes between the parts, and the like are not necessarily the same as the actual ones. Further, even when the same parts are represented, the dimensions and ratios may be different from each other depending on the drawings.
In the specification of the present application and each of the drawings, the same elements as those described above with respect to the above-described drawings are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate.

FIG. 1 is a schematic diagram illustrating a safety belt 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 at a work site such as a construction site where there is a danger of working at a high place or the like. At the work site, several scaffolds F1 and F2 are provided on the building C on the ground E. Workers W1 to W3 can move to the scaffolds F1 and F2 of each stage by using a ladder or the like. The height of the first-stage scaffold F1 from the ground E is provided at a position higher than the height of the worker in this example, and is set to a height of, for example, 2 m or more. The height of the second-stage scaffold F2 is set to be 2 m or more from the first-stage scaffold F1. Of course, the scaffolding may be further provided with a third stage or more.

In this example, the support ropes RO1 and RO2 are provided at positions at a height of about 1 m from the scaffolds F1 and F2 of each step so as to be substantially horizontal to the scaffolds F1 and F2. As will be described later, the support ropes RO1 and RO2 are hooked by the safety hook 1 provided on the safety belt 10 worn by the worker, and the worker crashes even when the worker steps off. Prevent from doing. Further, in this example, a handrail RA fixed to the scaffold F1 is provided on a part of the first stage scaffold F1.

The setting area A1 is set to include the building C. The setting area A1 includes the safety confirmation area A2. The setting area A1 and the safety confirmation area A2 are virtual areas mapped according to the position measurement system using the beacon installed in advance at the work site. In the setting area A1 and the safety confirmation area A2, position information such as the boundary of the setting area A1 and the presence / absence of the handrail RA provided in the safety confirmation area A2 is mapped by a plurality of installed beacons. In addition, when the term "area" such as the setting area and the safety confirmation area is used, the space in the height direction is included in addition to the two-dimensional area.

An appropriate area can be arbitrarily set for the setting area A1 and the safety confirmation area A2. The safety confirmation area A2 is set as, for example, an area having a height of more than 2 m and no handrail RA in the set 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 GPS (Global Positioning System) signals. In addition, if 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 the three-dimensional coordinates of XYZ. In either case, it is assumed that the application program corresponding to the transmission / reception system of the mobile communication terminal 30 carried by the worker or using the data such as the acceleration sensor of the mobile communication terminal 30 operates.

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

The signal related to the alarm is associated with the worker identification data for identifying the workers W1 to W3 via the mobile communication terminals 30 carried by the workers W1 to W3, and is transmitted to the mobile communication terminal 50 carried by the administrator M. Will be sent. The administrator M looks at the mobile communication terminal 50 and confirms whether or not each worker W1 to W3 is in the safety confirmation area A2, and whether or not the workers in the safety confirmation area A2 are taking safety assurance 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 mobile communication terminal 30 held by the worker W1 starts collecting data of his / her position information. .. The data of the position information of the worker W1 is appropriately transmitted to the mobile communication terminal 50 of the administrator M.

When the worker W1 enters the safety confirmation area A2, the 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 administrator 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 mobile communication terminal 30 of the worker W1. be able to.

For example, the location information of the safety confirmation area A2 is set based on the regulations such as the Industrial Safety and Health Act (including the Industrial Safety and Health Regulations). For scaffolding with a height of 2 m or more from the ground and no handrail, it is necessary to take a safety assurance action by hooking the safety hook on the support rope, so 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 scaffolding F1 where the handrail RA is not provided and the entire area of the scaffolding F2. The position where the worker W2 is located is a scaffold with a height of 2 m or more, but since the handrail RA is provided, it is outside the safety confirmation area A2. On the other hand, the position where the worker W3 is located is set in the safety confirmation area A2 because the scaffolding has a height of 2 m or more and has no handrail. The safety confirmation area A2 can be set not only in high places but also in areas where there is a risk of crashing, such as around pits and manholes having a predetermined depth or more.

FIG. 2 is a schematic front view illustrating the 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 the rope 2, and the other end of the rope 2 is connected to the belt 8. A buckle 5 is provided at one end of the belt 8, and the operator winds the belt 8 around his / her waist, passes the other end of the belt 8 through the buckle 5, and belts at a position corresponding to his / her waist. 8 is fixed. The belt 8 is provided with a lolip ring 4. The lolip ring 4 is used to prevent a fall through another lifeline when an operator moves between scaffolds of 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 3a is provided on the inner diameter side surface of the safety hook 1, and a wiring 3b for electrically connecting the contact sensor 3a and the safety hook forgetting alarm 20 is provided along the rope 2. ing.

FIG. 3 is a schematic view illustrating a state in which 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 brought into contact with each other by the 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 mobile communication terminal 30 is in the safety confirmation area A2, the safety hook forgetting alarm 20 issues an alarm until it receives a contact signal from the contact sensor 3a. The alarm may be, for example, a warning sound such as a buzzer sound, or a voice message or the like. It is preferable that the alarm has a volume, pitch, etc. that can sufficiently alert the worker at the construction site. The alarm may have a warning level of urgency by changing its volume, the type of warning sound, and the warning message as time passes from the start of issuance.

FIG. 4 is a schematic diagram illustrating a safety hook forgotten alarm, a mobile communication terminal, and their relationship.
As shown in FIG. 4, the safety hook forgetting alarm 20 includes the speaker 22 and the 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 the consumption of a battery (not shown) that supplies power for operation when the safety hook forgotten alarm 20 is stored. Therefore, at the time of use, the power switch 24 is always ON.

Each worker carries the mobile communication terminal 30. The mobile communication terminal 30 is, for example, a so-called smartphone. Of course, the mobile communication terminal 30 may be a dedicated terminal or the like for this system. The mobile communication terminal 30 wirelessly communicates with the safety hook forgetting notification device 20, receives radio waves of the position information measurement system, processes its own position information data, and wirelessly communicates with another mobile communication terminal 50. Send and receive data. It is preferable that the mobile communication terminal 30 has an acceleration sensor or the like built-in depending on the type of the position information measuring system or for detecting a worker's crash, which will be 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. It is desirable that the mobile communication terminal 50 is a computer terminal having a relatively large screen that displays a large amount of information such as identification data of each worker, location information data, and whether or not a safety hook is used. The mobile communication terminal 50 is, for example, a so-called tablet-type or notebook-type computer. Of course, the mobile communication terminal 50 may be a dedicated communication terminal for this system.

Each worker carries a set of a safety hook forgotten alarm 20 and a mobile communication terminal 30. The safety hook forgotten alarm 20 and the mobile communication terminal 30 communicate with each other. As the 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 20. The safety hook forgotten alarm 20 that has received the power start command is turned on and is in an operable state.

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

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

The administrator's mobile communication terminal 50 receives data including such information and displays the position of the worker and the usage status of the safety hook. When the safety hook is unused, the administrator can instruct the worker to use the safety hook, for example, by using the telephone function of the mobile communication terminal.

The operation of the safety belt hook forgetting prevention monitoring system 100 of the embodiment will be described.
First, when starting to use the safety belt hook forgetting prevention monitoring system 100, mapping is performed for the setting area A1 and the safety confirmation area A2. For example, the setting area A1 is set to the same area 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 construction, so the area is set accordingly.

In addition, the position information of the installed beacon is added to the map created in advance.

In the safety belt hook forgetting prevention monitoring system 100 of the embodiment, the safety assurance action (use of the safety hook) is alerted in the safety confirmation area A2, and the operator works even outside the safety confirmation area A2. It is possible to call attention to the administrator according to the height of the position (for example, 2 m or more).

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

As shown in FIG. 5, assuming that the height H of the work position (scaffolding) 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 is obtained. Be done. Here, the mounting position of h1 is set in advance, for example, a chest pocket or a waist pocket, and h1 is required based on the height A of the worker W. For example, the wearing position is calculated as h1 = 0.7 × A in the case of the chest pocket and h1 = 0.5 × A in the case of the waist pocket. Before entering the setting area A1, the worker W automatically calculates h1 by selecting and inputting his / her height A and a place to carry the mobile communication terminal 30 into his / her mobile communication terminal 30. NS. Further, the height data hs can be obtained in real time from the position information of the mobile communication terminal 30, and the height H information of the work position (scaffolding) of the worker W can also be obtained in real time.

After the above initial settings have been made, a series of operations of the safety belt hook forgetting prevention monitoring system 100 will be described with reference to a flowchart.
FIG. 6 is an example of a flowchart for explaining the operation of the safety belt hook forgetting prevention monitoring system of the embodiment.

As shown in FIG. 6, in step S1, the mobile 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 it is in the safety confirmation area A2. When the mobile communication terminal 30 is in the safety confirmation area A2, the process is transitioned to step S3, and when the mobile communication terminal 30 is not in the safety confirmation area A2, the process is transitioned to step S8.

In step S3, the safety hook forgetting alarm 20 determines whether or not the safety hook 1 is hooked on the support rope RO based on whether or not the contact signal is received. If 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 is shifted to the next step S4. When the safety hook forgetting alarm 20 receives the contact signal (when the safety hook 1 is hooked on the support rope RO), the process is shifted 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 20 transmits a signal to the operator's mobile communication terminal 30 that the contact signal is not received. The mobile communication terminal 30 transmits a signal to the administrator's mobile communication terminal 50 that the contact signal is not received.

In step S5, the mobile communication terminal 30 transmits a signal to the administrator's mobile communication terminal 50 that the contact signal of the safety hook is not received. The administrator's mobile communication terminal 50 displays the position of the worker and the fact that the safety hook is not used, as well as the data that identifies the worker.

In step S6, the mobile communication terminal 30 determines whether or not an acceleration larger than the 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. When the detected acceleration is equal to or higher than the predetermined acceleration, the process is shifted to step S7.

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

If the detected acceleration in step S6 is smaller than the predetermined acceleration, the mobile communication terminal 30 shifts the process to the first step S1 and repeats the above operation.

In the process of step S6, a process of excluding the state when the worker jumps up on the spot for jumping over an obstacle may be added. For example, after detecting the acceleration, the mobile communication terminal 30 performs position detection again, and when the position in the height direction changes in the negative direction, it is determined that the operator has crashed. 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 crashed, and the process is shifted to step S1.

In step S2, when the position of the worker is not within the safety confirmation area A2, in step S8, the mobile communication terminal 30 determines whether or not 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.

When the height H is 2 m or more, the mobile communication terminal 30 shifts the process to step S6. That is, even outside the safety confirmation area A2 where the safety assurance action of the worker is required, when the worker is at a high place, the worker may be at risk of a crash, so the crash judgment is made after S6. conduct.

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

In this way, the safety belt hook forgetting prevention monitoring system 100 alerts the worker when the safety hook is not hooked on the support rope RO, and gives the administrator the position information and safety of each worker. The securing action can be displayed on the mobile communication terminal 50.

The effect of the safety belt hook forgetting prevention monitoring system 100 of the embodiment will be described.
Since the safety belt hook forgetting prevention monitoring system 100 of the embodiment uses the position information measurement system using the mobile communication terminals 30 and 50, the administrator must accurately grasp the position of the worker at the site. Can be done.

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 support rope, and a safety hook forgetting alarm 20 that receives the generated contact signal. , Including. Therefore, whether or not the safety hook 1 is in contact with the support rope RO can be taken out as an electric signal, and the safety hook forgetting to hook alarm 20 can issue an alarm to prevent the safety hook from being forgotten to be hooked. It is possible to call the attention of the person.

The safety hook forgotten alarm 20 can send and receive data wirelessly with the mobile communication terminal 30. Then, the mobile communication terminal 30 can acquire the current position information by the position information measurement system. Therefore, the mobile communication terminal 30 can receive the state in which the safety hook forgotten alarm 20 is issuing an alarm and transmit it 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 identifying each worker, location information data, and data on whether or not the safety hook is used from the mobile communication terminal 30 of each worker. .. Therefore, the administrator can grasp the working position of each worker and confirm the usage state of the safety hook.

In the safety belt hook forgetting prevention monitoring system 100, a worker's crash can be detected by the height of the worker in 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 activities can be carried out promptly.

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

According to the embodiment described above, it is necessary to realize a safety belt hook forgetting prevention monitoring system that prevents forgetting to hook the safety hook and enables the administrator to grasp the current position of each worker and ensure safety. Can be done.

Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention and its equivalents described in the claims. Moreover, each of the above-described embodiments can be implemented in combination with each other.

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

Claims (5)

A safety hook that detects hooking on the support rope and generates a contact signal,
An alarm is issued until the contact signal is received, and a safety hook forgotten alarm that generates and transmits a signal indicating that the alarm is being issued, and an alarm
With a safety belt including
The worker wearing the safety band carries the signal to the effect that the alarm is issued, acquires the data of his / her own position information, and transmits the signal to the effect that the alarm is issued to the position information. The first mobile communication terminal that can be transmitted with data,
The manager who manages the worker carries the signal to the effect that the alarm is issued and the data of the position information, and displays the work position of the worker based on the data of the position information. , A second mobile communication terminal that displays whether or not the safety hook is hooked on the support rope based on the signal that the alarm is issued.
With
When the worker enters the preset first area, the first mobile communication terminal activates the safety hook forgotten alarm.
The first portable communication said safety hook over forget alarms activated by the terminal, when the worker is in the first area, safety belts that obtained by generating a signal indicating that issued the alarm Monitoring system to prevent forgetting to hook. The first mobile communication terminal is
Includes an accelerometer that detects at least vertical acceleration
When the vertical acceleration detected by the acceleration sensor is equal to or greater than a predetermined threshold value,
Regardless of whether or not the contact signal is received
The safety belt hook forgetting prevention monitoring system according to claim 1, wherein the worker generates a crash signal assuming that the worker has crashed from a high place, and transmits data including the crash signal to the second mobile communication terminal. Even when the worker is outside the first area, the first mobile terminal sends the crash signal when the height of the worker's work position is equal to or higher than a preset height specified height. generated that obtained according to claim 2 safety belt hook over forgetting prevention monitoring system according. The first mobile communication terminal is
Acquire own position information using at least one of GPS position information measurement, position information measurement by multiple beacons, position information measurement by IMES transmitter, and position information measurement by acceleration sensor and gyro sensor. The safety band hook forgotten prevention monitoring system according to any one of claims 1 to 3. The safety hook forgotten alarm is
A request for activation by receiving data including an activation signal received from the first mobile communication terminal when the worker carrying the first mobile communication terminal enters a second area including the first area. The safety belt hook forgetting prevention monitoring system according to any one of Items 1 to 4.

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