RU210740U1 - Intelligent fall arrest personal protective equipment - Google Patents

Abstract

The utility model relates to the safety of working at height and is designed to improve the safety of a person - a user at work using an intelligent support system for personal protective equipment against falls from a height - a safety harness and a safety sling. The automatic control device for the operation of a safety harness (UAKESP) is a complex technical device designed to control the operation of a safety harness in accordance with established norms and rules during working hours. UAKESP is located at the back on the waist belt of the harness and serves to monitor the status of sensors integrated into the harness, as well as the formation, storage and transmission of data via a wireless communication channel to external devices to provide information to administrative authorities. Automatic control of the harness operation is carried out by means of four groups of electronic sensors. The first group of sensors - reed switches and magnets built into the plastic lining of serial harness buckles. The second group - readers of RFID tags, located in close proximity to the dorsal and chest attachment points of the harness. The third group is the fall sensor, which is a thin electrical conductor built into the harness fall indicator. The fourth group includes: a position sensor in a horizontal-vertical space, a vertical motion and acceleration sensor, a magnetic field strength sensor (Hall sensor), and an ambient temperature sensor. In addition to sensors, UACESP includes a microcontroller board, a radio transmitting unit for wireless communication with external devices, a real-time unit, an external storage memory, a signal power amplifier and a vibro-light-sound alarm. UAKESP is powered by a removable battery, connecting and disconnecting which, respectively, turns the device on and off, which eliminates the need for additional control buttons. The device's automatic control of harness operation motivates the user to comply with safety regulations, and data transmission to external devices will allow to control the actions of workers, collect statistical data on production processes and, in the event of an accident, signal this to the responsible person, which will allow you to immediately take the necessary measures to minimize consequences.

Description

The utility model relates to the safety of working at height and is designed to improve the safety of a person - a user at work using an intelligent support system for personal protective equipment against falls from a height - a safety harness and a safety sling.

Known design Smart Height Safety System (patent US 2021358282 A1, publ. 18-11-2021). This design describes a safety system for working at height, consisting of a harness with a device attached to it that communicates with a smartphone and transmits to it, and through it to external users, data that allows you to control the fastening of the sling carabiners to the attachment points of the harness and to the anchor point or lines.

The disadvantage of this design is low information content, since the user's safety is controlled using microswitches integrated into the sling carabiners. In fact, only the number of clicks of the carabiner tongue is controlled, without tracking whether the carabiner is fixed at some point in time to the attachment point of the safety harness or not. Also, the disadvantages of the design include the lack of control over the correct putting on and operation of the safety harness.

The Fall Protection Harness With Damage Indicator design is known (patent EP 3199205 A1, published 02-08-2017). This design includes specially intertwined electrically conductive and non-conductive threads attached to a safety lanyard and transmitting a trigger signal when excessive weight is applied to the lanyard when a person falls from a height.

The disadvantage of this design is the lack of information on the operation of a sling or harness equipped with this device and a complex technical implementation caused by the difficulty in selecting the thickness of electrically conductive and non-conductive threads to control the force necessary to operate the device during a user fall, but not enough to falsely trigger a jerk that occurs in work process.

The technical result is the creation of a device consisting of a safety harness, an automatic control device for the operation of a safety harness (UAKESP), fixed on the back of the waist belt of a safety harness from the outside, forming, accumulating and transmitting data via a wireless communication channel to external devices to provide it to administrators authorities, which allows you to automatically monitor compliance with safety regulations and the rules for the operation of a safety harness in production.

The technical result is achieved by the fact that sensors and UAKESP are installed on a serial safety harness during the manufacturing process. The sensors are divided into four groups: the first group - reed switches and magnets integrated into plates made of durable plastic, mounted on serial buckles of a safety harness; the second group - readers of RFID tags located in the immediate vicinity of the chest and dorsal attachment points of the safety harness, reading information from the RFID tag located on the carabiner of the safety lanyard, and transmitting its data to UACESP to control the attachment of the lanyard to the attachment point of the safety harness; the third group - the breakdown sensor, which is a thin conductor of electric current, threaded through the tape of the indicator of the breakdown of the safety harness without violating the integrity of the tape; the sensors of these groups are connected to the microcontroller board through communication conductors and connectors installed on the microcontroller board, on which sensors of the fourth group are additionally installed: a position sensor in a horizontal-vertical space, an ambient temperature sensor, a vertical motion and acceleration sensor, a magnetic field (Hall sensor). Also on the microcontroller board are installed: a real-time block that forms the time of the device for the accuracy of registering events in time, external storage memory for recording events and the possibility of extracting and decoding records after an accident (the "black box" principle), a power amplifier with connected to its outputs with addressable LEDs, an audible buzzer and an alarm vibration motor; Infrared data transmission port and radio transmitting wireless communication unit for data transmission to external devices to provide information to administrative authorities. UAKESP is powered by a removable battery, connecting and disconnecting which, respectively, turns the device on and off.

The operation of the automatic operation control device is illustrated by the following figures:

fig. 1 - layout of sensors and devices on a harness;

fig. 2 - image of a safety harness buckle with pads and sensors integrated into them;

fig. 3 - diagram of the location of the RFID tag on the hook of the small carabiner of the safety lanyard;

fig. 4 is a diagram of a fall sensor located on the harness fall indicator;

fig. 5 - block diagram of the device for automatic control of the operation of a safety harness, where:

1 - safety harness against falling from a height,

2 - buckles of a safety harness of the "Cobra" type,

3 - pads for buckles of a safety harness,

4 - reed switch,

5 - magnet,

6 - dorsal attachment point of the safety harness,

7 - chest attachment point of the safety harness,

8 - RFID readers,

9 - RFID tag,

10 - hook pad of the carabiner of the safety sling,

11 - hook carabiner safety sling,

12 - device for automatic control of the operation of a safety harness,

13 - stall sensor,

14 - seams of the stitching of the indicator of the breakdown of the safety harness,

15 - thin conductor of the stall indicator,

16 - lock of the conductor of the stall indicator,

17 - communication conductors,

18 - back of the waist belt,

19 - microcontroller board,

20 - microcontroller,

21 - position sensor in horizontal-vertical space,

22 - ambient temperature sensor,

23 - vertical motion and acceleration sensor,

24 - magnetic field strength sensor,

25 - radio transmitting module,

26 - antenna of the radio transmitting module,

27 - real time block,

28 - external storage memory,

29 - infrared transmitter,

30 - power amplifier,

31 - vibro-light-sound alarm,

32 - removable battery.

A safety harness with an automatic operation control device consists of a safety harness against falling from a height 1, made in accordance with GOST R EN 361-2008, and additional elements attached to this harness (Fig. 1). On the buckles 2 of the “Cobra” type of the safety harness, there are rigidly fixed pads made of durable plastic 3 with a reed switch 4 and a magnet 5 integrated into them (Fig. 2). RFID tag readers 8 are fixed near the dorsal 6 and chest 7 attachment points of the safety harness (Fig. 1), the RFID tag 9 is integrated into an overlay 10 made of durable plastic and rigidly fixed on the hook of the carabiner 11 of the safety sling (Fig. 3). Readers of RFID tags transmit data of RFID tags to the automatic control device for the operation of a safety harness (UAKESP) 12 (Fig. 1) to control the attachment of a safety lanyard to the attachment point of a safety harness. On the breakdown indicator 13 of the safety harness 1 (Fig. 1), between the two seams of the stitching 14, a breakdown sensor 15 is placed, made of a thin conductor inserted into holes made without violating the integrity of the threads in the tape of the indicator of the breakdown of the safety harness, and limited in length by the latch 16 , rigidly fixed on the conductor 17 (Fig. 4). The conductors 17 are laid and fixed on the harness harness 1, connect the sensors and UAKESP 12, attached to the back of the harness harness harness 18 (Fig. 1).

In the UKAESP case there is a board 19 of the microcontroller 20, on which sensors are mounted: position in the horizontal-vertical space 21, temperature 22, vertical movement and acceleration 23, magnetic field strength 24; as well as a radio transmitting module 25, an antenna of a radio transmitting module 26, a real-time unit 27, an external storage memory 28, an infrared transmitter 29, a power amplifier 30 and a vibro-light-sound alarm 31 connected to its output, the device is powered by a removable battery 32 (Fig. 5).

When you connect a removable battery 32 UAESP 12 is turned on and starts polling the sensors (Fig. 5). When putting on a safety harness 1 on the user and fastening three buckles 2 of the harness (belt and two leg harnesses), a signal is sent to the analog inputs of the microcontroller 20 and the device is armed (in this mode, the readings of all sensors are monitored, events are recorded and data is transmitted to external devices by a radio transmitting module 25 and infrared 29). Then the condition of the integrity of the stall sensor 13, connected to the analog input of the microcontroller 20, is checked; If the sensor is intact, the readings of the position sensor in the horizontal-vertical space 21 connected to the analog inputs of the microcontroller 20 are checked, when data on the position of the sensor 21 in the horizontal position is received, the vibro-light-sound alarm 31 is turned on and a message is sent to external devices about the device being turned on incorrectly. Data from the temperature sensor 22 connected to the discrete input of the microcontroller 20 is stored in the external storage memory 28 and transmitted to external devices to assess working conditions and compliance with labor protection standards. The readings of the vertical motion and acceleration sensor 23, connected to the discrete input of the microcontroller 20, reflect the user's movement in vertical space and, if the sensor 23 shows that the user is moving downward with free fall acceleration, the vibro-light-sound alarm 31 will turn on and an accident notification will be sent to external devices case. The magnetic field strength sensor 24, consisting of a sensitive element based on the Hall sensor, is connected to the analog input of the microcontroller 20, monitors the state of the magnetic field strength near the user, when the threshold value of the magnetic field strength increases, a vibro-light-sound alarm 31 is activated and a message is transmitted to external devices reporting danger for the user. When connected to the dorsal 6 or chest 7 attachment point of the safety harness 1, a safety sling equipped with an RFID tag (Fig. 1), data from RFID tag readers 8 located in the immediate vicinity of the attachment points of the safety harness 1 are fed to the discrete input of the microcontroller 20, this event is recorded in the external storage memory 28 and transmitted to external devices. The real-time block 27, connected to the discrete input of the microcontroller 20, forms the time for recording events in the external storage memory of the device 28. The charge level of the battery 32 is monitored by connecting to the analog input of the microcontroller 20. The following are connected to the discrete outputs of the microcontroller 20: power amplifier 20, to the output of which is connected vibrosonic alarm 31; external storage memory 28; infrared port 29; radio transmitting module 25.

The microcontroller 20 is programmed to perform specific tasks, namely:

1. Analysis of the correct operation of the safety harness by monitoring the condition of the safety harness buckles.

2. Analysis of the absence of an accident by checking the integrity of the stall sensor.

3. Analysis of the attachment/detachment of the lanyard by monitoring the status of the RFID readers.

4. Analysis of the horizontal-vertical position of the user's body.

5. Analysis of ambient air temperature.

6. Analysis of the user's movement in space.

7. Analysis of the magnetic field strength.

8. Formation of an emergency warning vibro-light-sound alarm to attract attention.

9. Data transfer using a radio transmitter module to external devices.

The microcontroller software algorithms include the following functions:

1. Constant analysis of the state of the harness buckles, when all harness buckles are fastened, the device will arm and record the readings of all device sensors, generate data for transmission to external devices; when the harness buckles are unfastened, a message about this is sent to external devices and the device is disarmed.

2. Continuous analysis of the integrity of the stall sensor, if it breaks, an emergency vibro-light-sound alarm is triggered and a message is sent to external devices to inform the administrative authorities about the incident.

3. Continuous analysis of the state of RFID tag readers built in close proximity to the dorsal and chest attachment points of the harness, when a harness with an RFID tag attached to the hook of the lanyard carabiner is attached or detached to these points, data about these events is generated and transmitted .

4. Constant analysis of the horizontal-vertical position of the user's body, when the body is in a horizontal position for a long time, a vibro-light-sound alarm is activated to attract attention and a message is sent to external devices to inform about a possible accident.

5. Constant analysis of ambient air temperature.

6. Constant analysis of the user's movement in vertical space, when the user moves down at the speed of free fall, a light and sound alarm is triggered to attract attention and a message is sent to external devices about a possible accident.

7. Constant analysis of the magnetic field strength, when the threshold value is reached, a vibro-light-sound alarm is triggered and a message is sent to external devices.

8. Continuous monitoring of the health of the sensors, when a malfunction is detected, a light and sound alarm is activated and an alert is sent to external devices.

9. Continuous formation and recording of sensor operation data to external storage memory.

10. Continuous data transmission to external devices via wireless communication channel and infrared port.

11. Constant analysis of the state of charge of the battery, when the charge drops to the minimum threshold, a vibro-light-sound alarm will turn on and a message will be sent to external devices.

Claims (1)

Automatic control device for the operation of a safety harness (UAKESP), consisting of a device body attached to a safety harness, sensors for monitoring the condition of the safety harness buckles, a sensor signaling that the user has fallen from a height, sensors that control the fastening of the sling to the attachment points of the safety harness , the sensors are connected via communication conductors and contact connectors installed on the device board to the input line of the I / O port of the microcontroller, it is also connected to environmental sensors, a position sensor in space, a motion and acceleration sensor, a magnetic field strength sensor, a block real-time, an external storage memory chip, a power amplifier with addressable LEDs connected to its outputs, an audible buzzer and a vibro-light-sound signaling vibration motor, as well as a radio transmitting module transmitting data to the external devices via a wireless link.

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