KR20230060742A - System for detecting safety hook fastening based on wearable sensor for high altitude sk workers and method thereof - Google Patents

Abstract

The present invention relates to a system for high-place workers to detect fastening of a safety hook based on a wearable sensor and a method thereof. The present invention relates to the method for detecting fastening of a safety hook by using the system comprises the steps of: detecting a high-place worker in safety belt attachment equipment through a sensing signal received from a detecting sensor installed in the safety belt attachment equipment; providing a fastening request alarm through an alarm device installed in the safety belt attachment equipment so that the high-place worker fastens safety hooks, when detecting the high-place worker; using a pressure sensor attached to each of a seat belt and the safety hooks worn by the high-place worker, to primarily determine whether the safety hooks are fastened through a change in a detected pressure value; and using an inertial measurement unit (IMU) attached to each of the seat belt and the safety hooks if it is primarily determined that the safety hooks are fastened, to output the distance data of the IMU measured according to the motion of the high-place worker to finally determine whether the safety hooks are fastened. Therefore, the method can use the pressure sensor and the IMU to detect whether the safety hooks are fastened, thereby preventing fall accidents for high-place workers, and can transmit whether the safety hooks are fastened to a safety manager in real time, thereby enabling the safety manager to monitor the high-place workers so that the high-place workers can work safely.

Description

Safety hook fastening detection system based on wearable sensor for workers at height and its method

The present invention relates to a wearable sensor-based safety loop fastening detection system and method for workers at height, and more particularly, to determine whether a safety loop is removed from a safety belt and fastened to a safety belt attachment facility using a pressure sensor and an IMU sensor. It relates to a safety ring fastening detection system based on a wearable sensor for workers at height that detects whether or not, and a method therefor.

According to the ‘2018 Occupational Accident Occurrence Status’ announced by the Ministry of Employment and Labor, the construction industry accounted for the highest number of accident deaths among industrial accidents, and 46.7% of accident deaths in all industries occurred in the construction industry.

As such, the accident rate of the construction industry shows a much higher figure than other industries. occupies

The work environment with the highest number of industrial accidents caused by falls is work at heights. To reduce industrial accidents caused by falls, safety measures such as safety education and patrols of safety management managers are continuously being implemented for workers performing work at heights. However, the number of falls accidents is not decreasing.

In addition, the number of deaths from falls in the construction industry from 2014 to 2020 is more than 250, and among them, accidents caused by not fastening safety rings while working at heights account for 60% of fall accidents.

As a result, the government announced that it would make it mandatory to use smart safety equipment to prevent falls at construction sites.

Here, smart safety equipment refers to a system or system that builds and operates equipment or equipment that manages the safety of a construction site using wireless facilities and wireless communication, and can track the location of construction workers using intelligent CCTV. .

And, the smart safety equipment includes a smart safety ring, and the smart safety ring is a device for safety control of workers at high places, and means a system equipped with a function to detect the location and altitude of the operator, detect safety ring fastening, and warn when not fastened.

However, the smart safety equipment of the prior art has limitations in confirming whether the safety ring is correctly fastened.

In particular, there is a problem in that it is impossible to check whether the safety hook is fastened when the worker mounts the safety hook in various locations other than the fixed position on the seat belt. Since it is not constant, there is a limit in that it is impossible to confirm whether or not it has been concluded.

The background technology of the present invention is disclosed in Republic of Korea Patent Registration No. 10-2286381 (2021.08.05 announcement).

A technical problem to be achieved by the present invention is a wearable sensor-based safety loop fastening detection system for workers at heights that detects whether a safety loop is removed from a seat belt and fastened to a safety belt attachment facility using a pressure sensor and an IMU sensor, and its is to provide a way

According to an embodiment of the present invention for achieving this technical problem, in the safety loop fastening detection method using a wearable sensor-based safety loop fastening detection system, the safety belt attachment facility through the sensing signal received from the detection sensor installed in the safety belt attachment facility Detecting a worker at height within the height, and upon detecting the worker at height, providing an alarm requesting fastening so that the worker at height fastens the safety ring through an alarm device installed in the safety harness attachment facility, the safety belt worn by the worker at height, and Primarily determining whether the safety ring is fastened through a change in the pressure value sensed using the pressure sensor attached to each safety ring, and if it is determined that the safety ring is primarily fastened, the seat belt and safety ring Finally, determining whether to fasten the safety ring by outputting distance data of the inertial measurement unit measured according to the motion of the worker at height using an inertial measurement unit (IMU) attached to each ring.

When it is finally determined that the safety ring is fastened, the method may further include providing information on whether or not fastening has been completed to a user terminal possessed by the safety manager.

The alarm device includes an LED module or a speaker, and the step of providing the fastening request alarm through the alarm device installed in the safety belt attachment facility is to turn on or blink using an LED module or use a sound output from a speaker. An alarm requesting fastening of the safety ring may be provided.

In the first step of determining whether the seat belt is fastened, the pressure of the seat belt measured by the pressure sensor attached to the seat belt decreases by more than a certain value, and the pressure measured by the pressure sensor attached to the safety ring When the pressure of the safety ring is greater than 0, it may be determined that the safety ring is removed from the safety belt and fastened to the safety harness attachment facility.

In the step of determining whether the safety ring is fastened through the distance measured according to the movement of the worker at height, if the size of the IMU value of the safety ring in the Z-axis direction is within the standard range, the safety ring is attached to the safety harness attachment facility. can be considered as having been concluded.

According to another embodiment of the present invention, in a safety ring fastening detection system based on a wearable sensor for workers at height, a worker detecting a worker at height in a safety belt attachment facility through a sensing signal received from a detection sensor installed in a safety belt attachment facility A detection unit, when detecting the worker at height, an alarm signal generating unit for providing an alarm requesting fastening so that the worker at height fastens the safety loop through an alarm device installed in the safety belt attachment facility, and a safety belt and safety belt worn by the worker at height Whether or not the safety ring is primarily fastened is determined through a change in the pressure value sensed using the pressure sensor attached to each ring, and if it is determined that the safety ring is primarily fastened, the seat belt and each safety ring It includes a control unit that outputs distance data of the inertial measurement device measured according to the motion of the worker at height using an attached inertial measurement unit (IMU) and finally determines whether the safety ring is fastened.

As described above, according to the present invention, by detecting whether or not the safety ring is fastened using the pressure sensor and the IMU, it is possible to prevent falls of workers at height, and since whether or not the safety ring is fastened is transmitted to the safety manager in real time, the safety manager Workers at height can be monitored so that they can work safely. In addition, since the safety ring is installed in a position where workers are not uncomfortable in performing the work, the inconvenience of the work can be eliminated.

1 is a diagram for explaining a safety ring fastening detection system based on a wearable sensor for workers at height according to an embodiment of the present invention.
2A is a diagram for explaining the configuration of the seat belt shown in FIG. 1;
Figure 2b is a view for explaining the configuration of the safety ring shown in Figure 1.
3 is a diagram for explaining the configuration of a safety hook fastening detection system based on a wearable sensor according to an embodiment of the present invention.
4 is a flowchart illustrating a safety hook fastening detection method using a safety hook fastening detection system according to an embodiment of the present invention.
5A to 5C are exemplary diagrams for explaining step S440 of FIG. 4 .

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. In addition, in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

Then, with reference to the accompanying drawings, an embodiment of the present invention will be described in detail so that those skilled in the art can easily practice it.

Hereinafter, a safety ring fastening detection system 100 based on a wearable sensor for a worker at height according to an embodiment of the present invention will be described using FIGS. 1 to 2B.

1 is a diagram for explaining a safety ring fastening detection system based on a wearable sensor for workers at height according to an embodiment of the present invention.

FIG. 2A is a view for explaining the configuration of the safety belt shown in FIG. 1, and FIG. 2B is a diagram for explaining the configuration of the seat belt shown in FIG.

As shown in FIG. 1, the safety hook fastening detection system 100 according to an embodiment of the present invention includes a detection sensor 200, an alarm device 300, pressure sensors 410 and 510, and an inertial measurement device. unit, hereinafter referred to as "IMU") (420, 520) and the user terminal (600).

First, the safety ring fastening detection system 100 according to an embodiment of the present invention uses the detection sensor 200 to fasten the safety ring so that the worker at height detected in the safety belt attachment facility fastens the fastening request alarm through the alarm device 300. provides

In addition, the safety ring fastening detection system 100 is measured using the respective pressure sensors 410 and 510 and IMUs 420 and 520 attached to the safety belt 400 and the safety ring 500 worn by the worker at height. Whether or not the safety ring is fastened is transmitted to the user terminal 600 through the distance data of the IMUs 420 and 520 measured according to the measured amount of pressure change and the motion of the worker at height.

Here, "fastening the safety loop" means the state when the safety loop is hung on the safety handrail, safety support rope, etc. in the safety belt attachment facility, and "mounting the safety loop" means the safety loop attached to the chest holder or waist part of the safety belt. Indicates the state when the ring is hung.

Next, the detection sensor 200 detects a worker at height present in the safety belt attachment facility and transmits the detected sensing signal to the safety loop fastening detection system 100 .

At this time, the detection sensor 200 may be installed in a safety belt attachment facility, and may be implemented as a motion sensor, a temperature sensor, an infrared sensor, and the like.

Next, the alarm device 300 generates a fastening request alarm so that the worker at height detected by the detection sensor 200 fastens the safety ring.

At this time, the alarm device 300 may include an LED module or a speaker, and by using the LED module, the worker at height lights up or blinks to fasten the safety ring to generate an alarm requesting fastening, or the worker at height uses the speaker to fasten the safety ring. A fastening request alarm is generated through a sound to fasten the ring.

Next, as shown in FIG. 2A, the seat belt 400 includes a pressure sensor 410 and an IMU 420 which are wearable sensors, and as shown in FIG. 2B, the safety ring 500 is a pressure sensor 510 and IMU 520.

At this time, the pressure sensors 410 and 510 are attached to each of the safety belt 400 and the safety ring 500 worn by the worker at height, and the safety ring 500 is removed or the safety ring 500 is attached to the safety belt 400. Measure the detected pressure change when is fastened to the safety belt attachment facility.

Then, the pressure sensors 410 and 510 transmit the measured pressure change value to the safety hook fastening detection system 100 .

Here, the pressure sensor 410 included in the seat belt 400 may be attached to various parts such as a shoulder portion or a waist portion of the seat belt.

In addition, a low pass filter (LPF) may be additionally applied to the pressure sensors 410 and 510 to reduce noise.

In addition, the IMUs 420 and 520 are attached to the seat belt 400 and the seat hook 500, respectively, and refer to a device configured of a gyro sensor and an acceleration sensor to detect inertial momentum with high precision.

At this time, the IMUs 420 and 520 transmit IMU values in the Z-axis direction for each of the seat belt 400 and the seat hook 500 measured according to the motion of the worker at height to the safety hook fastening detection system 100.

Next, the user terminal 600 receives information on whether or not the fastening is completed from the safety hook fastening detection system 100, and the safety manager is implemented as a portable device.

At this time, the user terminal 600 is implemented as a device capable of exchanging information by connecting to a network wired or wirelessly, such as a laptop computer, smart pad, or smartphone, and the fastening is completed in real time from the safety loop fastening detection system 100. information is provided.

Hereinafter, the configuration of a safety ring fastening detection system based on a wearable sensor for a worker at height according to an embodiment of the present invention will be described with reference to FIG. 3 .

3 is a diagram for explaining the configuration of a safety hook fastening detection system based on a wearable sensor according to an embodiment of the present invention.

As shown in FIG. 3, the safety hook fastening detection system 100 according to an embodiment of the present invention includes an operator detecting unit 110, an alarm signal generating unit 120, a control unit 130, and a communication unit 140. do.

First, the worker detection unit 110 detects a worker at height in the safety belt attachment facility through a sensing signal received from the detection sensor 200 installed in the safety belt attachment facility.

At this time, the operator detection unit 110 receives the sensing signal sensed from the detection sensor 200 in real time.

Next, the alarm signal generation unit 120 provides a fastening request alarm so that the worker at height fastens the safety hook 500 through the alarm device 300 installed in the safety harness attachment facility.

At this time, the alarm signal generating unit 120 transmits an alarm signal requesting fastening of the safety ring to the alarm device 300, and the alarm device 300 is implemented as an LED module or a speaker so that the LED blinks or lights, and the sound output from the speaker Through this, a fastening request alarm is generated so that the worker at height fastens the safety hook.

Next, the control unit 130 primarily provides safety through a change in the pressure value detected using the pressure sensors 410 and 510 attached to the safety belt 400 and the safety ring 500 worn by the worker at height, respectively. Determine whether or not the ring is fastened.

At this time, the control unit 130 determines that the pressure of the seat belt 400 measured by the pressure sensor 410 attached to the seat belt 400 decreases by more than a certain value, and the pressure sensor 510 attached to the safety ring 500 If the pressure of the safety ring 500 measured by ) is greater than 0, it is determined that the safety ring 500 is removed from the safety belt 400 and fastened to the safety belt attachment facility.

In addition, when it is determined that the safety ring is primarily fastened, the control unit 130 measures the motion of the worker at height using the IMUs 420 and 520 attached to the seat belt 400 and the safety ring 500, respectively. It outputs the distance data of the IMU and finally determines whether to fasten the safety ring.

Here, the control unit 130 determines that the safety ring is finally fastened to the safety belt attachment facility when the size of the IMU value of the safety ring 500 in the Z-axis direction is within the reference range.

Next, when it is determined that the safety ring 500 is finally fastened, the communication unit 140 provides fastening completion information to the user terminal 600 possessed by the safety manager.

For example, when it is determined that the safety ring 500 is not primarily or finally fastened, the communication unit 140 provides the user terminal 600 possessed by the safety manager with information indicating that the worker is in an incomplete fastening state. can

If it is determined that the safety ring is primarily or finally fastened, the communication unit 140 provides the user terminal 600 possessed by the safety manager with information indicating that the worker is fastened.

Hereinafter, a safety hook fastening detection method using a wearable sensor-based safety hook fastening detection system according to an embodiment of the present invention will be described using FIGS. 4 to 5C.

4 is a flowchart illustrating a safety hook fastening detection method using a safety hook fastening detection system according to an embodiment of the present invention.

First, the safety ring fastening detection system 100 according to an embodiment of the present invention detects a worker at height in the safety belt attachment facility through a sensing signal received from the detection sensor 200 installed in the safety belt attachment facility (S410).

At this time, the safety ring fastening detection system 100 receives a sensing signal detected from a motion sensor, an infrared sensor, etc. attached to the safety belt attachment facility and detects the existence of a worker at height in the safety belt attachment facility.

In addition, when detecting a worker at height, the safety ring fastening detection system 100 according to an embodiment of the present invention alarms the fastening request for the worker at height to fasten the safety ring 500 through the alarm device 300 installed in the safety belt attachment facility. Provides (S420).

At this time, the alarm device 300 may be implemented as an LED module or a speaker, and the safety ring fastening detection system 100 transmits an alarm signal to the LED module or speaker to be turned on or off by the LED module or sound output from the speaker. Provides an alarm requesting fastening of the safety ring through

Next, the safety ring fastening detection system 100 according to an embodiment of the present invention detects using the pressure sensors 410 and 510 attached to the safety belt 400 and the safety ring 500 worn by the worker at height, respectively. It is primarily determined whether the safety ring is fastened through the change in the applied pressure value (S430).

Here, the seat belt fastening detection system 100 receives pressure values sensed from the pressure sensors 410 and 510 attached to the seat belt 400 and the safety ring 500, respectively.

Hereinafter, changes in pressure values of the pressure sensors 410 and 510 attached to the shoulder portion of the seat belt 400 and the safety ring 500, respectively, will be described using Tables 1 and 2.

Table 1 below is a table showing changes in the pressure values of the pressure sensors 410 attached to the shoulder portions of the seat belt 400, respectively.

Table 1 shows the seat belt (400) measured when the safety ring (500) is attached to the chest holder or waist of the seat belt (400) using the pressure sensor (410) attached to the shoulder of the seat belt (400). ) and the pressure value of the seat belt 400 measured when the safety ring 500 is removed from the chest holder or waist of the seat belt 400.

For example, as shown in Table 1, the pressure value of the seat belt 400 measured when the seat belt 500 is removed from the chest holder or waist of the seat belt 400 is 496 Mpa on average, and the seat belt 400 is 496 Mpa on average. The average pressure value measured when 500 is attached to the chest holder of the seat belt 400 is 547Mpa, and the pressure value measured when the safety ring 500 is attached to the waist of the seat belt 400 is average. Assume 572Mpa.

Then, when the chest holder of the seat belt 400 or the safety ring 500 attached to the waist is removed, the measured pressure change values of the seat belt are reduced by 52 Mpa and 76 Mpa, respectively.

Table 2 below is a table showing the amount of change in the pressure value of the pressure sensor 510 measured before and after fastening the safety ring 500 to the safety belt attachment facility.

As shown in Table 2, it is assumed that the pressure of the safety ring 500 is zero before fastening to the horizontal support pipe or horizontal support rope of the safety belt attachment facility.

For example, the pressure value of the safety ring 500 measured after fastening the safety ring 500 to the horizontal support pipe is 579 Mpa on average, and the safety ring 500 measured after fastening the safety ring 500 to the horizontal support rope. If the pressure value of ) is 634 Mpa on average, the pressure value of the safety ring 500 was increased after fastening the safety ring 500 to the safety belt attachment facility.

That is, the pressure of the seat belt 400 measured by the pressure sensor 410 attached to the seat belt 400 decreases by 50 MPa or more, and the safety measured by the pressure sensor 510 attached to the safety ring 500 When the pressure of the loop 500 is greater than 0, the safety loop fastening detection system 100 determines that the safety loop 500 is removed from the seat belt 400 and fastened to the safety harness attachment facility.

At this time, the pressure reduction reference value of the seat belt 400 may be changed by a safety manager.

In this way, when it is determined that the safety ring 500 is primarily fastened, the safety ring fastening detection system 100 according to the embodiment of the present invention is an IMU attached to each of the seat belt 400 and the safety ring 500. Distance data of the IMU (420, 520) measured according to the motion of the worker at height is output using (420, 520) to finally determine whether the safety ring is fastened (S440).

At this time, the seat belt fastening detection system 100 receives the IMU value measured through the IMUs 420 and 520 attached to the seat belt 400 and the safety ring 500, respectively.

In more detail, the safety hook fastening detection system 100 outputs distance data through the IMUs 420 and 520 to extract an IMU value in the Z-axis direction.

At this time, the IMUs 420 and 520 may be installed at the same location as the pressure sensors 410 and 510, and are set to be initialized at intervals of 5 seconds to reduce cumulative errors.

In addition, when the size of the IMU value of the safety ring 500 in the Z-axis direction is within the reference range, the safety ring fastening detection system 100 determines that the safety ring 500 is fastened to the safety harness attachment facility.

At this time, the reference range can be set to -0.183m or more +0.183m or less, and the reference range can be changed by the safety manager.

5A to 5C are exemplary diagrams for explaining step S440 of FIG. 4 .

5A shows the IMU value of the safety belt 400 and the IMU value of the safety ring 500 measured when the safety ring 500 is fastened to the horizontal support pipe of the safety belt attachment facility, and FIG. 5B shows the safety ring ( 500) shows the IMU value of the safety belt 400 and the IMU value of the safety ring 500 measured when the safety belt 500 is fastened to the horizontal support rope of the safety belt attachment facility. 400) shows the IMU value of the seat belt 400 and the IMU value of the safety ring 500 measured after being attached to the seat belt 400.

As shown in FIGS. 5A and 5B, the IMU value of the safety ring 500 measured when the worker moves after fastening the safety ring 500 to the horizontal support pipe or horizontal support rope of the safety belt attachment facility is the seat belt was measured smaller than the IMU value of

And, since the movement of the horizontal support rope is greater than that of the horizontal support pipe, the IMU value of the safety ring 500 and the IMU value of the seat belt 400 measured when the safety ring 500 is fastened to the horizontal support rope are horizontal. The IMU value of the safety ring 500 and the IMU value of the seat belt 400 measured when the safety ring 500 was fastened to the support pipe were larger than those of the seat belt 400.

In addition, as shown in FIG. 5C, the IMU value of the safety ring 500 measured when the operator moves after attaching the safety ring 500 to the seat belt 400 was measured to be greater than the IMU value of the safety belt 400. , It can be confirmed that the IMU value of the seat belt 400 is similar to the IMU value of the seat belt 400 measured when the safety ring 500 is fastened to the safety belt attachment facility.

That is, when the size of the IMU value in the Z-axis direction of the safety ring 500 is included in the standard range of -0.183m or more + 0.183m or less, the safety ring fastening detection system 100 is installed in the safety belt attachment facility. ) is considered to have been concluded.

In this way, when it is determined that the safety hook 500 is finally fastened, the safety hook fastening detection system 100 according to an embodiment of the present invention provides information on whether or not fastening is completed to the user terminal 600 possessed by the safety manager. Do (S450).

At this time, when it is determined that the safety ring is not fastened in step S430 or S440, the safety ring fastening detection system 100 may provide the user terminal 600 with information on the unfastened state of the corresponding operator, and in S430 or S440 In the step, when the safety ring is fastened, the safety ring fastening detection system 100 may provide the user terminal 600 with information on the fastening completion state of the operator.

Then, the safety manager can monitor whether or not the safety ring is fastened by the worker at height through the fastening incomplete or fastening complete state information.

As such, according to an embodiment of the present invention, by detecting whether or not the safety ring is fastened using a pressure sensor and an IMU, it is possible to prevent a fall accident of workers at height, and whether or not the safety ring is fastened is transmitted to the safety manager in real time, A safety manager can monitor workers at height so that they can work safely. In addition, since the safety ring is installed in a position where workers are not uncomfortable in performing the work, the inconvenience of the work can be eliminated.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

100: safety ring fastening detection system, 110: worker detection unit,
120: alarm signal generating unit, 130: control unit,
140: communication unit, 200: detection sensor,
300: alarm device, 410, 510: pressure sensor,
410, 510: IMU, 600: user terminal

Claims (12)

In the safety hook fastening detection method using a wearable sensor-based safety hook fastening detection system,
Detecting a worker at height in the safety belt attachment facility through a sensing signal received from a detection sensor installed in the safety belt attachment facility;
Primarily determining whether the safety ring is fastened through a change in the pressure value sensed using the pressure sensor attached to each of the safety belt and safety ring worn by the worker at height, and
When it is determined that the safety ring is primarily fastened, the distance data of the inertial measurement unit measured according to the motion of the worker at height using the inertial measurement unit (IMU) attached to each of the safety belt and the safety ring. Safety ring fastening detection method comprising the step of outputting and finally determining whether or not the safety ring is fastened. According to claim 1,
When it is finally determined that the safety ring is fastened, the safety ring fastening detection method further comprising the step of providing information on whether or not the fastening is completed to a user terminal possessed by a safety manager. According to claim 1,
When detecting the worker at height, the safety ring fastening detection method further comprising providing a fastening request alarm to fasten the safety ring through an alarm device installed in the safety harness attachment facility. According to claim 3,
The alarm device,
Including LED modules or speakers,
The step of providing the engagement request alarm,
A method for detecting fastening of a safety ring that provides an alarm requesting fastening of a safety ring by using an LED module to turn on or blink or to use a sound output from a speaker. According to claim 1,
The first step of determining whether the safety ring is fastened,
When the pressure of the seat belt measured by the pressure sensor attached to the seat belt decreases by more than a certain value and the pressure of the safety ring measured by the pressure sensor attached to the safety ring is greater than 0, the safety ring Safety ring fastening detection method for determining that is removed from the seat belt and fastened to the safety belt attachment facility. According to claim 1,
The step of determining whether the safety ring is fastened through the distance measured according to the movement of the worker at height,
When the size of the IMU value in the Z-axis direction of the safety ring is included within the reference range, the safety ring fastening detection method for determining that the safety ring is fastened to the safety harness attachment facility. In the wearable sensor-based safety ring fastening detection system for workers at height,
A worker detection unit that detects a worker at height in the safety belt attachment facility through a sensing signal received from a detection sensor installed in the safety belt attachment facility, and
It is determined whether or not the safety ring is fastened primarily through a change in the pressure value sensed using the pressure sensor attached to each of the safety belt and safety ring worn by the worker at height, and it is determined that the safety ring is primarily fastened. Then, using the inertial measurement unit (IMU) attached to each of the seat belt and safety loop, the distance data of the inertial measurement unit measured according to the motion of the worker at height is output to finally determine whether the safety loop is fastened. Safety ring fastening detection system comprising a control unit to. According to claim 7,
Finally, when it is determined that the safety ring is fastened, the safety ring fastening detection system further comprises a communication unit for providing information on whether or not fastening is completed to a user terminal possessed by a safety manager. According to claim 7,
Safety ring fastening detection system further comprising an alarm signal generating unit for providing an alarm requesting fastening so that the worker at height fastens the safety ring through an alarm device installed in the safety harness attachment facility when detecting the worker at height. According to claim 9,
The alarm device,
Including LED modules or speakers,
The alarm signal generating unit,
A safety hook fastening detection system that provides an alarm requesting fastening of the safety hook by using an LED module to turn on or blink or to use a sound output from a speaker. According to claim 7,
The control unit,
When the pressure of the seat belt measured by the pressure sensor attached to the seat belt decreases by more than a certain value and the pressure of the safety ring measured by the pressure sensor attached to the safety ring is greater than 0, the safety ring A seat belt fastening detection system that determines that it is removed from the seat belt and fastened to the safety belt attachment facility. According to claim 7,
The control unit,
A safety ring fastening detection system that determines that the safety ring is fastened to the safety belt attachment facility when the size of the IMU value in the Z-axis direction of the safety ring is included within the reference range.

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