CN115445115A - Safety belt hook state recognition device - Google Patents
Safety belt hook state recognition device Download PDFInfo
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- CN115445115A CN115445115A CN202211156842.7A CN202211156842A CN115445115A CN 115445115 A CN115445115 A CN 115445115A CN 202211156842 A CN202211156842 A CN 202211156842A CN 115445115 A CN115445115 A CN 115445115A
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- hook
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- safety belt
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
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- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
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Abstract
The invention relates to a safety belt hook state recognition device, which comprises an opening judgment contact arranged at an opening of a hook body, wherein when the opening of the hook body is locked and closed by a locking piece, the opening judgment contact is triggered and forms a passage with a safety belt hook, and a hook closing signal is sent to a processing unit; when the opening of the hook body is opened, opening a passage formed by the judging contact and the safety belt hook to be disconnected, and sending a hook opening signal to the processing unit; the hanging judgment contact is arranged on the inner side of the opening of the hook body, when the safety belt hook is not hung, the hanging judgment contact and the safety belt hook form a passage, and a state signal that the hook is not hung is sent to the processing unit; when the safety belt hook is hung, the hanging judgment contact is triggered to break a passage formed by the safety belt hook and send a state signal that the hook is hung to the processing unit; and the processing unit identifies the current state of the safety belt hook based on the set logic and gives an early warning according to signals sent by the opening judgment contact and the hanging judgment contact.
Description
Technical Field
The invention relates to the technical field of aerial work equipment, in particular to a safety belt hook state recognition device.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
High altitude construction can utilize the safety belt to ensure staff's safety usually, the safety belt takes the structure of big double hook five-point type area buffering usually, two sets of hanging a connector have, when climbing or removing, through switching fixed hanging a connector and near the firm roof beam in shift position, stick, the ring in turn, fasten with many "rings" modes such as metal buckle, rope/area are around detaining, the area latch closure, and then realize whole journey protection, avoid staff's accident to take place to fall, the sign of losing the protection is hanging a connector in the high altitude construction and is not fixed simultaneously.
The aerial work is limited by the environmental impact and is difficult to monitor the operating personnel on the ground, and the prior art can help the ground personnel to realize the monitoring, the detection and the early warning of the aerial work in a remote mode through the data monitored by various sensors, for example, whether the aerial work is correctly hooked can be judged through a pressure sensor arranged on a safety belt, or the opening and closing state of a hook is detected by introducing alternating current (the safety voltage is lower than 36V) to a safety belt hook, and the data of the monitored human body, the environment and the like are matched, and the modes such as judgment and the like are carried out according to preset logic.
Most of the prior art rely on a complex data processing system, misjudgment is easy to occur, in actual use, even if a ground monitoring person monitors that the safety belt of an operator is abnormal through the system, the ground monitoring person still needs to cooperate with the operator to confirm the actual hanging state of the safety belt, and according to statistics, the unreliable state of the safety belt mostly comes from that the operator starts high-altitude operation under the condition that the operator does not recognize the abnormal state of the safety belt, so that possible subsequent danger is caused.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a safety belt hook state recognition device, which utilizes the existing metal structure of a safety belt hook, at least two metal contacts are arranged at specific positions, and the hanging and opening states of a safety belt are recognized and early warned by utilizing the contact combination of the contacts and the use specification of the safety belt for overhead operation through simple judgment logic.
In order to achieve the purpose, the invention adopts the following technical scheme:
a first aspect of the present invention provides a seat belt buckle state recognition apparatus including:
the opening judgment contact is arranged at the opening of the hook body, and when the opening of the hook body is locked and closed by the locking piece, the opening judgment contact is triggered to form a passage with the safety belt hook, and a signal that the hook is in a closed state is sent to the processing unit; when the opening of the hook body is opened, opening a passage formed by the judging contact and the safety belt hook to be disconnected, and sending a signal that the hook is in an open state to the processing unit;
the hanging judgment contact is arranged on the inner side of the opening of the hook body, and when the safety belt hook is not hung, the hanging judgment contact and the safety belt hook form a passage and send a state signal that the hook is not hung to the processing unit; when the safety belt hook is hung, the hanging judgment contact is triggered to break a passage formed by the safety belt hook and send a state signal that the hook is hung to the processing unit;
and the processing unit is used for judging the current state of the safety belt hook and giving an early warning based on the set logic according to the hook state signals sent by the opening judgment contact and the hanging judgment contact.
The safety belt hooks are at least two groups, and the monitoring information acquired by the processing unit is the on-off state of the two hooks and the hanging state of the two hooks.
The processing unit executes the following judgment logic:
at least one group of hooks is in a suspended state, and when the openings of the suspended hooks are in a closed state, a prompt signal is sent out;
at least one group of hooks is in an un-hung state, and when the opening of the other group of hooks is in an open state, an alarm signal is sent out.
The hook body is movably connected with the locking piece through an articulated shaft, the hook body is provided with a limiting shaft, the near end of the limiting piece is movably connected with the limiting shaft, the middle part of the hook body is provided with a sliding rod, and the sliding rod moves along an arc-shaped slide way under the pushing of the locking piece.
The locking piece is fan-shaped, and the one end at fan-shaped edge is connected and is opened and judge the contact, and the other end has curved slide, and when the locking piece rotated around the articulated shaft, the slide on the locking piece followed the slide bar motion.
The hook body is provided with a root part and an opening part which are connected, the root part is provided with a safety rope fixing hole and a public contact, and the opening part is provided with an opening judgment contact and a hanging judgment contact.
The opening of couple body inboard still has and holds carrier, holds carrier and hangs the one end that triggers the piece through holding carrier rotation axis swing joint near couple root department, hangs the other end that triggers the piece and is equipped with and hangs and judge the contact.
Compared with the prior art, the above one or more technical schemes have the following beneficial effects:
1. a loop is formed by matching a metal structure of the hook with a contact, the hook is judged to be in a hanging state and a closed state, and a judgment logic is set according to the related requirements of high-altitude operation, so that the current state of the safety belt hook is identified and pre-warned, and the safety of high-altitude operation personnel is guaranteed.
2. The safety belt hook has the advantages that at least two metal contacts are arranged at specific positions by utilizing the existing metal structure of the safety belt hook, and the hanging and opening states of the safety belt are recognized and early-warning is carried out by utilizing the contact combination of the contacts and the use specification of the safety belt for high-altitude operation through simple judgment logic.
3. Aiming at the double-hook safety belt used in high-altitude operation, the safety of high-altitude operation personnel can be ensured only by ensuring that at least one hook is hung on a reliable hanging point, and the opening of the hook in a hanging state is closed, or two hooks are in the hanging state and the openings are both closed.
4. The identification process is simple logic judgment, does not need a complex data processing process, has high accuracy and is easy to integrate on a safety belt.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic system diagram of a processing unit in a seat belt hook state identification device according to one or more embodiments of the present invention;
fig. 2 is a schematic diagram of the position of contacts in a seat belt buckle status recognition apparatus provided in one or more embodiments of the invention;
fig. 3 is a schematic structural diagram of a processor in a seat belt hook state recognition apparatus according to one or more embodiments of the present invention;
fig. 4 is a schematic diagram of a group of state recognition circuits in a processing unit of a seat belt hook state recognition device according to one or more embodiments of the present invention;
in the figure: 1. opening a judgment contact; 2. hanging a judgment contact; 3. hinging shafts; 4. a limiting shaft; 5. a slide bar; 6. a carrier rotating shaft; 7. a slideway; 8. a limiting member; 9. suspending a trigger; 10. a carrier; 11. a hook body; 12. a locking member; 13. a safety rope fixing hole; 14. a common contact.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, in the prior art, a pressure sensor installed on a seat belt may be used to determine whether the seat belt is correctly hooked, or an ac (a safety voltage lower than 36V) is applied to a seat belt hook to detect an open/close state of the hook, and the high-altitude falling protection is implemented according to preset logic determination and other manners in cooperation with monitored data of a human body, an environment and the like.
For example, CN202210495006.5 discloses a method for detecting the specification of aerial work behavior, which identifies the non-specification aerial work behavior by image recognition technology.
For example, cn202111529816.X discloses a flow detection device for preventing falling during high-altitude operation, which uses a pressure sensor to determine whether the safety belt is hung, and an open-close detection sensor to detect whether a safety belt hook is opened to prevent falling from high altitude.
For example, CN202111519233.9 discloses an overhead working safety protection management system, which performs opening and closing judgment by applying ac to a hook, and performs comprehensive judgment by monitoring human body data, environmental data and GPS data.
Most of the prior art rely on a complex data processing system, misjudgment is easy to occur, and when the safety belt is in actual use, even if the ground monitoring personnel monitor that the safety belt of the operating personnel is abnormal through the system, the ground monitoring personnel still need to cooperate with the operating personnel to confirm the actual hanging state of the safety belt, and according to statistics, most of the unreliable state of the safety belt comes from that the operating personnel already starts high-altitude operation under the condition that the operating personnel does not recognize the abnormal state of the safety belt, so that subsequent possible danger is caused.
Therefore, the following embodiments provide a safety belt hook state recognition device, which uses the existing metal structure of a safety belt hook, sets at least two metal contacts at specific positions, uses the contact combination of the contacts and the use specification of a safety belt for overhead operation, and recognizes the hanging and opening states of the safety belt through simple judgment logic and performs early warning.
The first embodiment is as follows:
as shown in fig. 1 to 4, a seat belt buckle state recognition apparatus includes:
the opening judgment contact 1 is arranged at the opening of the hook body 11, and when the opening of the hook body 11 is locked and closed by the locking piece 12, the opening judgment contact is triggered to form a passage with the safety belt hook, and a hook closing signal is sent to the processing unit; when the opening of the hook body is opened, opening a passage formed by the judging contact and the safety belt hook to be disconnected, and sending a hook opening signal to the processing unit;
the hanging judgment contact 2 is arranged on the inner side of the opening of the hook body 11, when the safety belt hook is not hung, the hanging judgment contact 2 and the safety belt hook form a passage, and a state signal that the hook is not hung is sent to the processing unit; when the safety belt hook is hung, the hanging judgment contact 2 is triggered to break a passage formed by the safety belt hook and send a state signal that the hook is hung to the processing unit;
and the processing unit is used for judging the current state of the safety belt hook and giving an early warning based on a set logic according to hook state signals sent by the opening judgment contact 1 and the hanging judgment contact 2.
The processing unit executes the following judgment logic:
the safety belt is provided with at least two groups of hooks, and monitoring information comprises the on-off states of the two hooks and the hanging states of the two hooks;
at least one group of hooks is in a suspended state, and when the openings of the suspended hooks are in a closed state, a prompt signal is sent out;
at least one group of hooks is in an un-hanging state, and when the opening of the other group of hooks is in an opening state, an alarm signal is sent out.
The safety belt in this embodiment has two sets of couples, is couple 1 and couple 2 respectively, sends safety belt early warning signal, monitoring information according to the logic of setting for: the double hook switch state (0 closed, 1 open), the double hook hanging state (0 hanging, 1 not hanging), the judgment logic is as shown in table 1:
TABLE 1 seat belt judgment and early warning logic
As shown in fig. 2, the hook body 11 is movably connected with the locking member 12 through the hinge shaft 3, the hook body 11 is provided with a limiting shaft 4, the proximal end of the limiting member 8 is movably connected with the limiting shaft 4, the middle part is provided with a sliding rod 5, and the sliding rail 7 moves along the sliding rod 5 under the pushing of the locking member 12.
The locking piece 12 is fan-shaped, and the one end at fan-shaped edge is connected and is opened judgement contact 1, and the other end has curved slide 7, and when locking piece 12 rotated around articulated shaft 3, slide 7 on the locking piece 12 followed slide bar 5 motion, when reaching extreme position, opened judgement contact 1 and got in touch body 11 separation and realized the return circuit disconnection.
In this embodiment, the hook body 11 has a root portion having the common contact 14 and an opening portion having the opening determination contact 1 and the hanging determination contact 2 connected thereto.
The inside of the opening of the hook body 11 is also provided with a bearing part 10, the bearing part 10 is movably connected with one end of the suspension trigger 9 through a bearing part rotating shaft 6 near the root of the hook, and the other end of the suspension trigger 9 is provided with a suspension judgment contact 2.
The couple body 11 receives the extrusion of action of gravity and string point when hanging on a certain string point, hangs trigger 9 and moves towards the direction that is close to couple body root, and it is rotatory to hold carrier rotation axis 6 round, makes the metal contact of judging contact and couple body 11 root that hangs of hanging the trigger 9 other end to make hang the return circuit disconnection that forms between judging contact 2 and the couple body 11.
In this embodiment, the hinge shaft 3, the sliding rod 5 and the bearing member rotating shaft 6 are all provided with insulating sheaths to prevent the locking member 12 from being in direct contact with the metal of the hook body 11, which results in the accidental triggering of the two contacts and generation of error signals. The common contact 14 is connected with the processing unit, hangs the normally closed switch in the judgment contact 2 corresponding to the processing unit, and is normally closed and opened to generate a trigger signal when triggered; and opening a normally open switch in the processing unit corresponding to the judgment contact 1, and closing the normally open switch to generate a trigger signal when triggering.
The processing unit is not limited to a specific installation position, and can be connected with each contact by using an STM32 processor, and after integrating a battery, a temperature and humidity sensor, a buzzer, an indicator light and a communication module (such as a 4G module), the processing unit is arranged in the shell, and the system architecture is as shown in FIGS. 1 and 3.
The signal conversion of the opening judgment contact 1 and the hanging judgment contact 2 during the on-off process can be realized through a state recognition circuit to be recognized as a hanging state of a hook and a closing state of an opening.
For example, a plurality of groups of state recognition circuits are connected in parallel, the number of hooks corresponds to the number of the state recognition circuits, and the plurality of groups of state recognition circuits are connected in parallel;
in this embodiment, for example, the opening determination of the hook 1 is taken, the rest circuit structures are consistent, the state identification circuit includes a resistor R2 and an LED connected in parallel to a diode D1 connected to the STM32 processor, and after a +3.3V power supply supplies power to the resistor R2 and the resistor R1, the resistor R1 is connected to the LED.
When the processor selects the STM32F103RCT6, pins 51 to 56 are respectively connected into the state recognition circuits of the hooks 1 and 2 as shown in FIG. 3.
The device can realize the state recognition of the safety belt hook, and aiming at the double-hook safety belt used in high-altitude operation, at least one hook is ensured to be hung on a reliable hanging point, the opening of the hook in a hanging state is closed, or two hooks are in the hanging state while the openings are both in the closed state, so that the safety of high-altitude operation personnel can be ensured.
A loop is formed by matching a metal structure of the hook with a contact, the hook is judged to be in a hanging state and a closed state, and a judgment logic is set according to the related requirements of high-altitude operation, so that the current state of the safety belt hook is identified and pre-warned, and the safety of high-altitude operation personnel is guaranteed.
The identification process is simple logic judgment, does not need a complex data processing process, has high accuracy and is easy to integrate on the safety belt.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a safety belt couple state recognition device which characterized in that: the method comprises the following steps:
the opening judgment contact is arranged at the opening of the hook body, and when the opening of the hook body is locked and closed by the locking piece, the opening judgment contact is triggered to form a passage with the safety belt hook, and a signal that the hook is in a closed state is sent to the processing unit; when the opening of the hook body is opened, opening a passage formed by the judging contact and the safety belt hook to be disconnected, and sending a signal that the hook is in an open state to the processing unit;
the hanging judgment contact is arranged on the inner side of the opening of the hook body, and when the safety belt hook is not hung, the hanging judgment contact and the safety belt hook form a passage and send a state signal that the hook is not hung to the processing unit; when the safety belt hook is hung, the hanging judgment contact is triggered to break a passage formed by the safety belt hook and send a state signal that the hook is hung to the processing unit;
and the processing unit is used for judging the current state of the safety belt hook and giving an early warning based on the set logic according to the hook state signals sent by the opening judgment contact and the hanging judgment contact.
2. A seat belt buckle status recognition apparatus as claimed in claim 1, wherein: the safety belt hook has at least two groups, and the monitoring information that processing unit obtained is the on-off state of two couples and the state of hanging of two couples.
3. A seat belt buckle status recognition apparatus as claimed in claim 1, wherein: the processing unit executes the following judgment logic:
at least one group of hooks is in a suspended state, and when the openings of the suspended hooks are in a closed state, a prompt signal is sent out;
at least one group of hooks is in an un-hanging state, and when the opening of the other group of hooks is in an opening state, an alarm signal is sent out.
4. A seat belt buckle status recognition device as claimed in claim 1, wherein: the couple body passes through articulated shaft and locking piece swing joint, and the couple body is equipped with spacing axle, the spacing axle of the near-end swing joint of locating part, and the middle part is equipped with the slide bar, and the slide bar moves along curved slide under the promotion of locking piece.
5. The seat belt buckle status recognition apparatus as set forth in claim 4, wherein: the locking piece is fan-shaped, and one end of the fan-shaped edge is connected with the opening judgment contact.
6. A seat belt buckle status recognition device as claimed in claim 5, wherein: the other end of the fan-shaped edge of the locking piece is provided with an arc-shaped slideway, and when the locking piece rotates around the hinge shaft, the slideway on the locking piece moves along the slide rod.
7. A seat belt buckle status recognition apparatus as claimed in claim 1, wherein: the hook body is provided with a root part and an opening part which are connected.
8. A seat belt buckle status recognition device as claimed in claim 7, wherein: the root part is provided with a safety rope fixing hole and a common contact, and the opening part is provided with an opening judgment contact and a hanging judgment contact.
9. A seat belt buckle status recognition device as claimed in claim 7, wherein: the inside of the opening part of the hook body is also provided with a bearing part.
10. A seat belt buckle status recognition device as claimed in claim 9, wherein: the bearing part is close to the root of the hook and is movably connected with one end of the suspension trigger part through a rotating shaft of the bearing part, and the other end of the suspension trigger part is provided with a suspension judgment contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211156842.7A CN115445115B (en) | 2022-09-22 | 2022-09-22 | Safety belt couple state recognition device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211156842.7A CN115445115B (en) | 2022-09-22 | 2022-09-22 | Safety belt couple state recognition device |
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| CN115445115A true CN115445115A (en) | 2022-12-09 |
| CN115445115B CN115445115B (en) | 2023-08-15 |
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|---|---|---|---|---|
| JPH0228259U (en) * | 1988-08-11 | 1990-02-23 | ||
| JP2010046325A (en) * | 2008-08-22 | 2010-03-04 | Kansai Electric Power Co Inc:The | Safety belt |
| US20110090079A1 (en) * | 2009-10-20 | 2011-04-21 | Fujii Denko Co., Ltd. | Safety belt and system for checking a usage status of the safety belt |
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| CN115445115B (en) | 2023-08-15 |
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