A device for improving the accuracy of identification of the state of a high-altitude work safety belt hook

Abstract

The utility model discloses an embodiment of elevating high altitude operation safety belt hook state identification accuracy device, include: hook and hook detection component, hook detection component includes bearing block, pressure detection spare and metal contact induction spare, bearing block sets up in the inner wall of hook, pressure detection spare sets up between bearing block and the inner wall of hook, metal contact induction spare sets up in the side of bearing block away from pressure detection spare, and bearing block is used for with the pressure contact of being buckled thing, and pressure detection spare is used for the pressure that being buckled thing produces to bearing block, and metal contact induction spare is used for inducting the contact of being buckled thing and bearing block. Hook detection component of this embodiment can identify simultaneously whether there is being buckled thing to exert pressure and contact to bearing block, provides the possibility for elevating high altitude operation safety belt hook state identification accuracy, guarantees the safety of safety belt user.

Description

Technical Field

[0001] This utility model relates to the field of hook technology, and in particular to a device for improving the accuracy of identifying the status of safety belt hooks in high-altitude operations. Background Technology

[0002] Currently, traditional safety belt hooks used in high-altitude operations rely primarily on manual inspection to ensure secure fastening. However, under stress or fatigue during high-altitude work, workers may forget to fasten the hook or misjudge its engagement, potentially leading to falls. To improve operational safety and ensure workers receive timely alerts for improper use, automatic hook engagement detection and recognition are urgently needed. Although products with intelligent hook engagement recognition exist, they still suffer from misjudgments, resulting in low accuracy in identifying secure hook engagement. Utility Model Content

[0003] This utility model discloses a device for improving the accuracy of identifying the status of safety belt hooks in high-altitude operations, which is used to improve the accuracy of identifying effective hook engagement.

[0004] This utility model provides a device for improving the accuracy of identifying the status of safety belt hooks in high-altitude operations, comprising: a hook and a hooking detection component; the hooking detection component includes a pressure block, a pressure detection element, and a metal contact sensor; the pressure block is disposed on the inner wall of the hook, the pressure detection element is disposed between the pressure block and the inner wall of the hook, and the metal contact sensor is disposed on the side of the pressure block away from the pressure detection element; the pressure block is used to make pressure contact with the object being hooked, the pressure detection element is used to detect the pressure generated by the object being hooked on the pressure block, and the metal contact sensor is used to sense the contact between the object being hooked and the pressure block.

[0005] Furthermore, the pressure detection element includes an elastic deformation element and a strain gauge bridge circuit. The strain gauge bridge circuit includes a strain gauge disposed on the surface of the elastic deformation element. One end of the elastic deformation element is connected to the inner wall of the hook, and the other end is connected to the pressure block. The pressure block is used to displace when squeezed by the object being clamped, causing the elastic deformation element to bend. The strain gauge bridge circuit is used to stretch or shorten the strain gauge when the elastic deformation element bends, causing a change in the resistance value of the strain gauge. This results in the strain gauge bridge circuit generating a voltage signal that is positively correlated with the change in resistance value. The voltage signal is used to reflect the magnitude of the pressure exerted by the object being clamped on the pressure block.

[0006] Furthermore, the strain gauge bridge circuit adopts a strain gauge half-bridge circuit, which includes two strain gauges. The elastic deformation element includes two elastic deformation elements, which are symmetrically distributed on both sides of the center line of the hook arc. The two strain gauges are respectively disposed on the surface of the elastic deformation elements.

[0007] Furthermore, an elastic element is provided between the pressure block and the inner wall of the hook. The elastic element is used to prevent deformation of the elastic deformation element due to the weight of the pressure block itself when the hook is upside down.

[0008] Furthermore, the metal contact sensor includes a metal sensing electrode and a capacitive non-contact sensing chip. The metal sensing electrode is connected to the capacitive non-contact sensing chip. The metal sensing electrode is disposed on the part of the pressure block that contacts the object being fastened. The capacitive non-contact sensing chip is used to detect the capacitance signal that changes due to coupling with the metal sensing electrode when the object being fastened contacts the pressure block. The capacitance signal is used to reflect whether the object being fastened is in contact with the pressure block of the hook.

[0009] Furthermore, the outer side of the metal induction electrode is wrapped with an insulating layer.

[0010] Furthermore, it also includes a touch detection component and an opening / closing detection component;

[0011] A locking element is provided at the opening of the hook. The rotating end of the locking element is hinged to the first end of the hook opening, and the movable end of the locking element abuts against the second end of the hook opening. The locking element is used to rotate around the first end of the hook and disengage from or abut against the second end of the hook to realize the opening and closing of the hook.

[0012] The touch detection component is located on the outside of the hook and is used to sense whether the user's hand is in contact with the hook. The opening and closing detection component is used to sense whether the moving end of the locking member is in contact with or disengaged from the second end of the hook.

[0013] Furthermore, the device includes an external connector disposed on the outside of the hook and near the second end of the hook. The locking member has a protrusion near the rotating end. The opening / closing detection assembly includes a tactile switch disposed on the side of the external connector near the locking member. The protrusion is used to press the tactile switch when the movable end of the locking member disengages from the second end of the hook, and to release the tactile switch when the movable end of the locking member abuts against the second end of the hook.

[0014] Furthermore, the locking member is elastically connected to the external member, and the sensing area of ​​the touch detection component is located on the side of the external member away from the locking member, and coincides with the position of the elastic connection between the external member and the locking member.

[0015] Furthermore, the hook is also equipped with an attitude recognition component for obtaining the attitude of the hook.

[0016] As can be seen from the technical solution, the embodiments provided by this utility model have the following advantages: When the hook is attached, the pressure block is in pressure contact with the object being attached. The pressure detection element set between the inner wall of the pressure block and the hook can sense the pressure exerted by the object being attached on the pressure block. At the same time, the metal contact sensor set on the side of the pressure block away from the pressure detection element senses the contact between the object being attached and the pressure block. Thus, the attachment detection component of this embodiment can simultaneously identify whether an object being attached is exerting pressure and making contact with the pressure block, providing the possibility to improve the accuracy of the identification of the status of the safety belt hook in high-altitude operations and ensuring the safety of the safety belt user. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a device for improving the accuracy of identifying the status of safety belt hooks in high-altitude operations, provided in an embodiment of this utility model.

[0019] Figure 2 This is an exploded view of the structure of a device for improving the accuracy of identifying the status of safety belt hooks in high-altitude operations, provided in an embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram showing the state of the movable end of the locking component disengaging from the second end of the hook in a device for improving the accuracy of identifying the status of a safety belt hook in high-altitude operations, provided in an embodiment of this utility model.

[0021] Figure 4 This is a cross-sectional view of the overall structure of a device for improving the accuracy of safety belt hook status recognition in high-altitude operations, provided in an embodiment of this utility model.

[0022] Figure 5 This is a schematic diagram of the touch detection component and the opening / closing detection component in a device for improving the accuracy of safety belt hook status recognition in high-altitude operations, provided in an embodiment of this utility model.

[0023] Figure 6 This is a schematic diagram of the pressure detection component and the metal contact sensing component in a device for improving the accuracy of safety belt hook status recognition in high-altitude operations, provided in an embodiment of this utility model.

[0024] Figure 7 The circuit diagrams for the resistance strain gauge half-bridge (Wheatstone bridge) and differential amplifier circuits in a device for improving the accuracy of safety belt hook status recognition in high-altitude operations provided in this embodiment of the utility model are as follows:

[0025] Figure 8 This is a circuit diagram showing the connection between the capacitive non-contact proximity chip and the metal sensing electrode in a device for improving the accuracy of safety belt hook status recognition in high-altitude operations, provided in this embodiment of the present invention.

[0026] Figure 9 This is a circuit diagram of a capacitive non-contact proximity chip (touch detection component) in a device for improving the accuracy of safety belt hook status recognition in high-altitude operations, provided in an embodiment of this utility model.

[0027] Figure 10 The circuit diagram of the tactile switch in a device for improving the accuracy of safety belt hook status recognition in high-altitude operations provided in this embodiment of the utility model;

[0028] Figure 11 This is a flowchart illustrating the operation of a device for improving the accuracy of safety belt hook status recognition in high-altitude operations, as provided in this embodiment of the present invention.

[0029] Figure Descriptions: 1. Hook; 2. Hanging Detection Component; 3. Pressure Block; 4. Pressure Detection Component; 41. Elastic Deformation Component; 42. Elastic Component; 5. Metal Contact Sensing Component; 51. Metal Sensing Electrode; 52. Capacitive Non-Contact Sensing Chip; 53. Insulating Layer; 54. Connection Point; 6. Object to be Hooked; 7. Touch Detection Component; 71. Touch Sensing Area; 8. Opening / Closing Detection Component; 81. Protrusion; 82. Tactile Switch; 821. Manganese Steel Spring; 822. Compression Spring; 823. Keypad; 824. Keypad Protective Groove; 9. Locking Component; 10. Control Box; 101. Controller; 102. Battery Pack; 103. Cover; 104. Silicone Plug; 11. External Component; 12. Air Pressure Recognition Component; 13. Anti-Displacement Ring. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0034] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0035] This utility model embodiment discloses a device for improving the accuracy of identifying the status of safety belt hooks in high-altitude operations.

[0036] Please see Figures 1-6 One embodiment of the device for improving the accuracy of safety belt hook status recognition in high-altitude operations provided in this utility model includes:

[0037] The hook 1 and the hook detection component 2 are provided. The hook detection component 2 includes a pressure block 3, a pressure detection element 4, and a metal contact sensor 5. The pressure block 3 is disposed on the inner wall of the hook 1, the pressure detection element 4 is disposed between the pressure block 3 and the inner wall of the hook 1, and the metal contact sensor 5 is disposed on the side of the pressure block 3 away from the pressure detection element 4. The pressure block 3 is used to make pressure contact with the object 6 being fastened, the pressure detection element 4 is used to detect the pressure generated by the object 6 being fastened on the pressure block 3, and the metal contact sensor 5 is used to detect the contact between the object 6 being fastened and the pressure block 3.

[0038] Understandably, in practical implementation, the safety belt hook 1 of this embodiment is used in activities such as rock climbing, engineering protection, fire rescue, rappelling and caving, and electrical high-altitude operations, especially electrical high-altitude operations. The anchoring object 6 used in these high-altitude activities is typically made of metal, possessing advantages such as high load-bearing capacity, high wear resistance, and high durability. During the operation, only by confirming that the hook 1 is attached to the anchoring object 6 can the safety of the safety belt user be guaranteed. If only the pressure detection element 4 is used to identify the attachment status of the hook 1, when the hook 1 is attached to the hand or waist, the anchoring objects on the hand and waist will exert pressure on the pressure block 3 of the hook 1, thus identifying the hook 1 as effectively attached, resulting in low accuracy in hook status identification. If only the metal contact sensor 5 is used, when metal approaches but the hook 1 is not attached to the anchoring object 6, the metal contact sensor 5 can also sense the metal and may also identify the hook 1 as effectively attached, again resulting in low accuracy in hook status identification. Therefore, in this embodiment, a pressure detection element 4 is set between the inner wall of the pressure block 3 and the hook 1, and a metal contact sensor 5 is set on the side of the pressure block 3 away from the pressure detection element 4. When the hook 1 is hooked, the pressure block 3 comes into pressure contact with the object 6. The pressure detection element 4 between the inner wall of the pressure block 3 and the hook 1 can sense the pressure exerted by the object 6 on the pressure block 3. At the same time, the metal contact sensor 5 on the side of the pressure block 3 away from the pressure detection element 4 senses the contact between the object 6 and the pressure block 3. Thus, the hooking detection component 2 of this embodiment can simultaneously collect information on whether the object 6 is exerting pressure on the pressure block 3 and whether there is contact, which provides the possibility of improving the accuracy of the status recognition of the hook 1 of the safety belt for high-altitude operations and ensures the safety of the safety belt user.

[0039] In a more specific embodiment, the pressure detection element 4 includes an elastic deformation element 41 and a strain gauge bridge circuit. The strain gauge bridge circuit includes a strain gauge disposed on the surface of the elastic deformation element 41. One end of the elastic deformation element 41 is connected to the inner wall of the hook 1, and the other end of the elastic deformation element 41 is connected to the pressure block 3. The elastic deformation element 41 is used to bend when the object 6 is pressed against the pressure block 3, causing the pressure block 3 to displace. The strain gauge bridge circuit is used to stretch or shorten the strain gauge when the elastic deformation element 41 bends, causing a change in the resistance value of the strain gauge. This causes the strain gauge bridge circuit to generate a voltage signal that is positively correlated with the change in resistance value. The voltage signal is used to reflect the magnitude of the pressure exerted by the object 6 on the pressure block 3.

[0040] Understandably, in practice, when hook 1 is upside down, the weight of the pressure block 3 itself will compress the pressure detection element 4. If the presence or absence of pressure is used to determine whether the object 6 is applying pressure, misjudgment is very likely. Therefore, a pressure threshold must be set for accurate judgment. In this embodiment, the resistance strain gauge bridge circuit plays a key role: when the elastic deformation element 41 bends, the resistance strain gauge on it will be stretched or shortened accordingly, causing a change in resistance value. This, in turn, causes the resistance strain gauge bridge circuit to generate a voltage signal that is positively correlated with the change in resistance value. This voltage signal can accurately reflect the magnitude of the pressure exerted by the object 6 on the pressure block 3, realizing a reliable conversion of the hanging force from mechanical deformation to an electrical signal. Moreover, within the hanging force range, the output signal is linearly related to the force value, providing convenience for judging whether the pressure of the object 6 on the pressure block 3 is greater than the threshold.

[0041] It should be noted that the implementation principle and method of "the resistance strain gauge being stretched or shortened, causing a change in the resistance value of the resistance strain gauge, resulting in the resistance strain gauge bridge circuit generating a voltage signal positively correlated with the change in resistance value" in this embodiment is prior art. Specifically, refer to publication number CN203587695U. Prior art discloses the use of the sensitivity of the bridge circuit to reflect a very small amount of resistance change in a voltage signal. After further amplification, the sensitivity requirement for resistance change is the same as the line-of-sight principle and method of converting resistance change into a voltage signal in this embodiment.

[0042] It should be noted that the pressure threshold is at least greater than the weight of the pressure block 3 itself, which can effectively eliminate the interference of the weight of the pressure block 3 itself on the pressure detection.

[0043] In a more specific embodiment, the resistance strain gauge bridge circuit adopts a resistance strain gauge half-bridge circuit, which includes two resistance strain gauges. The elastic deformation element 41 includes two elastic deformation elements 41, which are symmetrically distributed on both sides of the center line of the arc portion of the hook 1. The two resistance strain gauges are respectively disposed on the surface of the elastic deformation element 41.

[0044] Understandably, in practice, by symmetrically distributing the two elastic deformation elements 41 on both sides of the center line of the arc of the hook 1, the deformation difference between the two elastic deformation elements 41 due to their positions is avoided, so that the force on the two elastic deformation elements 41 is as consistent as possible, preventing the resistance change of the two resistance strain gauges from deviating and improving the measurement accuracy of the bridge circuit.

[0045] In a more specific embodiment, an elastic element 42 is provided between the pressure block 3 and the inner wall of the hook 1. The elastic element 42 is used to prevent the elastic deformation element 41 from deforming due to the weight of the pressure block 3 itself when the hook 1 is upside down.

[0046] Understandably, in practice, the elasticity of the elastic element 42 prevents the elastic deformation element 41 from deforming due to the weight of the pressure block 3 when the hook 1 is upside down. This design avoids invalid deformation caused by the weight of the pressure block 3, ensuring that the resistance change of the resistance strain gauge is always related to the actual force on the hook 1, thereby maintaining the accuracy and stability of the half-bridge circuit measurement.

[0047] In some more specific implementations, a thin-film pressure sensor can be used instead, which is less expensive but has poor high-temperature resistance and is suitable for low-temperature environments.

[0048] In a more specific embodiment, the resistance strain gauge half-bridge (Wheatstone bridge) circuit is connected to the differential amplifier circuit, such as... Figure 7 As shown, the change in resistance strain gauge is amplified by using a Wheatstone bridge and a differential amplifier circuit.

[0049] It should be noted that amplifying the change in resistance strain gauge through a Wheatstone bridge and differential amplifier circuit is existing technology. For details, please refer to publication number CN112747775A. Existing technology discloses that the bridge is connected through an amplifier circuit, a conversion circuit and a microcontroller, which is consistent with the connection method and working principle of the Wheatstone bridge and differential amplifier circuit in this embodiment.

[0050] In a more specific embodiment, the elastic element 42 is a spring, with two springs distributed on both sides of the hanging detection component 2 to reduce interference with the pressure on the pressure detection component 4.

[0051] In a more specific embodiment, a pressure of 90g is selected as the threshold value for judgment. When the pressure of the strain gauge is greater than 90g, it is determined that hook 1 is hooked onto the object 6; when the pressure of the strain gauge is less than or equal to 90g, it is determined that hook 1 is not hooked onto the object 6. It should be noted that the hook detection component 2 weighs approximately 90g, and when the hook 1 identification component is inverted, the spring can just support the weight of the hook 1 identification component.

[0052] In a more specific embodiment, the metal contact sensor 5 includes a metal sensing electrode 51 and a capacitive non-contact sensing chip 52. The metal sensing electrode 51 is connected to the capacitive non-contact sensing chip 52 through a connection point 54. The metal sensing electrode 51 is disposed at the contact point between the pressure block 3 and the object being fastened. The capacitive non-contact sensing chip 52 is used to detect the capacitance change caused by the coupling between the object being fastened 6 and the metal sensing electrode 51 when the object being fastened 6 contacts the pressure block 3. The capacitance change is used to reflect whether the object being fastened 6 is in contact with the pressure block 3 of the hook 1.

[0053] Understandably, in practical implementation, the metal sensing electrode 51 is connected to the capacitive non-contact sensing chip 52. When the object 6 is not close to the hook 1, the capacitance value of the metal sensing electrode 51 hardly changes. When the object 6 approaches the hook 1 and contacts the pressure block 3, the charge of the metal sensing electrode 51 changes, causing a change in capacitance. This change in capacitance is used to reflect whether the object 6 is in contact with the pressure block 3 of the hook 1. Based on this principle, the pressure detection element 4 and the metal contact sensing element 5 work together to improve the accuracy of hooking. For example, when the hook 1 is hooked onto an object 6 that is difficult to hook, and the hook 1 is still not in a vertical position after hooking, the pressure detection element 4 may not be able to reach the hooking recognition threshold. In this case, the metal contact sensing element 5 can recognize that there is an object 6 inside the hook 1, which can avoid misjudging "not hooked" due to insufficient pressure caused by the hook 1 not being vertical. By confirming the physical contact state of the object 6, it provides effective support for hooking recognition. It also serves a self-checking function. If the metal contact sensor 5 senses the object 6 being fastened, and the pressure sensor 4 is not under pressure exceeding the threshold, the system will remind the hook 1 that the pressure sensor 4 needs to be inspected.

[0054] It should be noted that the "capacitive non-contact sensing chip 52 is used to detect the capacitance change caused by coupling with the metal sensing electrode 51 when the object 6 contacts the pressure block 3" in this embodiment is prior art. Specifically, refer to publication number CN217930341U. The prior art discloses that a capacitance detector is coupled with a metal electrode. The capacitance detector is used to detect the capacitance value between the metal electrode and the corresponding metal connector on the outer shell. This is consistent with the implementation principle of this embodiment, which uses a capacitive non-contact sensing chip to detect the capacitance change caused by coupling with the metal sensing electrode 51 when the object 6 contacts the pressure block 3. The main difference between this embodiment and the prior art is the different application scenarios. In this embodiment, the capacitive non-contact sensing chip and the metal sensing electrode are applied to the seat belt hook, while in the prior art, the capacitance detector and the metal electrode are applied in the field of position detection technology.

[0055] In a more specific embodiment, the outer side of the metal sensing electrode 51 is wrapped with an insulating layer 53. It is understood that, in practice, contact between the metal sensing electrode 51 and other metals is avoided, ensuring that the metal sensing electrode 51 forms effective capacitive coupling only with the object 6 inside the hook 1, thus eliminating interference from the hook 1's own metal structure.

[0056] In a more specific embodiment, the working principle of the capacitive non-contact sensing chip 52 (as follows) Figure 8 As shown in the diagram: When the object 6 is brought close to the metal sensing electrode 51 connected to pin CIN0 of the capacitive non-contact sensing chip 52, the ARC_KEY outputs a high level, as shown in the diagram. Figure 8 As shown, otherwise ARC_KEY outputs a low level.

[0057] In a more specific embodiment, the metal induction electrode 51 has an arc-shaped structure that fits the shape of the hook 1 and the pressure block 3.

[0058] In a more specific embodiment, the pressure block 3 is connected to the hook 1 via the anti-displacement ring 13 to prevent the pressure block 3 from swaying left and right during contact with the object 6, which would affect the detection accuracy of the pressure detection element 4 and the metal contact sensing element 5.

[0059] In a more specific embodiment, it also includes a touch detection component 7 and an opening / closing detection component 8;

[0060] A locking member 9 is provided at the opening of the hook 1. The rotating end of the locking member 9 is hinged to the first end of the opening of the hook 1, and the movable end of the locking member 9 abuts against the second end of the opening of the hook 1. The locking member 9 is used to rotate around the first end of the hook 1 and disengage from or abut against the second end of the hook 1 to realize the opening and closing of the hook 1.

[0061] The touch detection component 7 is located on the outside of the hook 1 and is used to sense whether the user's hand is in contact with the hook 1. The opening and closing detection component 8 is used to sense whether the moving end of the locking member 9 is in contact with or detached from the second end of the hook 1.

[0062] It is understandable that, in specific embodiments, the prior art relies solely on the contact or disengagement of the locking element 9 with the hook 1 by the opening / closing component to determine whether the hook 1 is open. This has significant limitations: when the hook 1 is attached to a large object 6 and is not closed, if a hand leaves the hook 1, the hook is not normally open; if the hand remains on the hook 1, it is normally open. Therefore, relying solely on the opening / closing detection component 8 cannot distinguish between the normally open and abnormally open states of the hook 1. However, by simultaneously identifying the closed state of the hook 1 and whether a hand is holding the hook 1, a dual basis for judgment can be established, effectively compensating for the shortcomings of a single detection method and thus improving the accuracy of identifying the normally open state of the hook 1.

[0063] In a more specific embodiment, an external member 11 is included, which is disposed on the outside of the hook 1 and close to the second end of the hook 1. The opening and closing detection component 8 includes a protrusion 81 and a tactile switch 82. The locking member 9 is provided with a protrusion 81 near the rotating end. The tactile switch 82 is disposed on the side of the external member 11 close to the locking member 9. The protrusion 81 is used to press the tactile switch 82 when the movable end of the locking member 9 disengages from the second end of the hook 1, and to release the tactile switch 82 when the movable end of the locking member 9 abuts against the second end of the hook 1.

[0064] Understandably, in practical implementation, by placing the protrusion 81 of the locking member 9 and the tactile switch 82 near the hinge point between the hook 1 and the locking member 9, the distance between them can be shortened, making the identification of the locking member 9 disengaging from or abutting the second end of the hook 1 more sensitive. Simultaneously, when the movable end of the locking member 9 disengages from the second end of the hook 1, the protrusion 81 presses the tactile switch 82 to energize it; and when the locking member 9 abuts the first end of the hook 1, the protrusion 81 releases the tactile switch 82 to de-energize it. Since the closing time of the hook 1 is longer than the opening time, the tactile switch 82 is in the de-energized state for a relatively longer period, thus effectively reducing the workload of the tactile switch 82.

[0065] In a more specific embodiment, the tactile switch 82 includes a manganese steel spring 821, a spring 822, a button plate 823, and a button plate protection groove 824. The button plate 823 contains the tactile switch circuit, and the spring 822 is disposed between the manganese steel spring 821 and the button plate 823. Understandably, in a specific implementation, the protrusion 81 presses against the manganese steel spring 821, which in turn presses against the spring 822 and the button plate 823, thus pressing the tactile switch 82. When the protrusion 81 releases the manganese steel spring 821, the spring 822 unfolds, causing the manganese steel spring 821 to disengage from the button plate 823, thus releasing the tactile switch 82.

[0066] In a more specific embodiment, the working principle of the tactile switch circuit (e.g.) Figure 9 As shown in the figure: when the tactile switch 82 is pressed, OPEN_KEY is high and the tactile switch 82 is in the closed state; when the tactile switch 82 is released, OPEN_KEY is low and the tactile switch 82 is in the open state.

[0067] In a more specific embodiment, the locking member 9 is elastically connected to the external member 11, and the sensing area of ​​the touch detection component 7 is located on the side of the external member 11 away from the locking member 9, and coincides with the position of the elastic connection between the external member 11 and the locking member 9.

[0068] Understandably, in practical implementation, placing the touch detection component 7 and the opening / closing detection component 8 close together facilitates their circuit layout and reduces the wiring complexity of the hook 1. Simultaneously, when a hand presses the locking element 9, the finger's pressure point corresponds to the opening / closing detection component 8, and the palm's pressure point corresponds to the touch detection component, thus ensuring that the touch detection component 7 maintains stable contact with the hand and guarantees reliable recognition of the touch signal.

[0069] In a more specific embodiment, the touch detection component 7 employs a capacitive non-contact proximity chip. The chip identifies whether a hand is approaching, as shown in the circuit diagram. Figure 10 As shown, when a hand approaches the metal plate connected to the chip CIN0, TOUCH_KEY outputs a high level, and when the hand moves away, TOUCH_KEY outputs a low level.

[0070] In a more specific embodiment, the hook 1 is also provided with an attitude recognition component for obtaining the attitude of the hook 1.

[0071] Understandably, by monitoring whether the hook 1 is in an upside-down (abnormal) or upright (normal) position through the posture recognition component, the accuracy and reliability of the status recognition of the safety belt hook 1 for high-altitude operations can be significantly improved, providing more proactive life safety protection for workers.

[0072] It should be noted that the posture recognition component in this embodiment is used to detect the posture of the hook 1, which is existing technology. Specifically, refer to the publication number CN119105380 A. The six-axis sensor is used to monitor the posture and position changes of the seat belt hook 1 in real time. The principle of the posture recognition component in this embodiment is the same as that of the six-axis sensor in the prior art for detecting the posture of the hook 1.

[0073] In a more specific embodiment, the device also includes a pressure recognition component 12. It is understood that the pressure recognition component 12 determines the height position of the hook 1 and thus determines whether the hook 1 is in a climbing state. At this time, the pressure detection component 4, the metal contact sensor 5, the touch detection component 7, the opening and closing detection component 8, and the posture recognition component are triggered to enter the working state, thereby improving the service life of the device.

[0074] In a more specific embodiment, a logical judgment method is provided for some of the devices in the above embodiments that improve the accuracy of identifying the status of the safety belt hook 1 for high-altitude operations (e.g.) Figure 11(As shown), this invention further details the beneficial effects of the device for improving the accuracy of identifying the status of the safety belt hook 1 for high-altitude operations, in conjunction with any of the above embodiments, so that those skilled in the art can understand the contribution of the solution. The following embodiments are not limitations on this invention, and those skilled in the art can adjust them according to actual logical judgment requirements in practical applications.

[0075] The hook 1 is identified by recognizing the grip of the hook 1 (through the touch detection component 7), recognizing the self-locking (through the opening and closing detection component 8), recognizing the proximity of the object 6 (through the metal contact sensor 5), and recognizing the pressure of the resistance strain gauge (through the pressure detection component 4). The hook 1 is then identified by comprehensively judging whether it is effectively hooked.

[0076] This embodiment identifies seven states of hook 1, including five non-compliant states: hook 1 is not attached; the grip recognition component of hook 1 may be malfunctioning; the grip recognition component of hook 1 senses a hand but the self-locking recognition component does not detect the locking component 9 closing with the hook body; the self-locking recognition component detects the locking component 9 opening but the hook body is not engaged with the external hook node; and hook 1 does not self-lock after being attached. The two compliant states are: the grip recognition component senses hand contact after hook 1 is attached; and the grip recognition component senses hand removal after hook 1 is attached. The specific identification process is as follows:

[0077] S1. Hook attachment recognition begins;

[0078] S2. Determine if the hook is being held. If yes, proceed to S3; otherwise, proceed to S21.

[0079] S21. Check if the posture recognition hook is upside down. If yes, proceed to step S22; otherwise, proceed to step S23.

[0080] S22. If the hook is detected to be hanging upside down, wait for 1 second. If the duration is ≥60 seconds, proceed to step S24; if the duration is <60 seconds, return to step S2.

[0081] S23. Determine that the hook grip identification component may be abnormal, record an abnormal operation locally, send it to the platform via 4G network, and return to step S2;

[0082] S24. Confirm that the hook is not in use, record an abnormal operation locally, send it to the platform via 4G network, and return to step S2.

[0083] S3. Determine whether the hook self-locking has been opened; if yes, proceed to step S4; otherwise, proceed to step S31.

[0084] S31. If the self-lock is not detected to be opened, wait for 1 second. If the duration is ≥60s, proceed to step S32; if the duration is <60s, return to step S3.

[0085] S32. Confirm that the hook is being held and the self-locking mechanism has not been opened, and record an abnormal operation locally. Send the record to the platform via the 4G network and return to step S2.

[0086] S4. Determine whether the metal contact sensor has detected the object being fastened and whether the resistance strain gauge has a pressure greater than 90g; if so, proceed to step S5; otherwise, proceed to step S41.

[0087] S41. If no object is detected approaching or being subjected to force, wait for 1 second. If the duration is ≥60s, proceed to step S42; if the duration is <60s, return to step S4.

[0088] S42. Confirm that the self-locking mechanism was not engaged after it was opened, and record an abnormal operation locally. Send the record to the platform via the 4G network and return to step S2.

[0089] S5. Determine whether the hook self-locking has been opened; if yes, proceed to step S51; otherwise, proceed to step S6.

[0090] S51. If the hand is not released and the hook is not self-locking, wait for 1 second. If the duration is ≥60s, proceed to step S52; if the duration is <60s, return to step S5.

[0091] S52. Confirm that the hook did not self-lock after being attached, and record an abnormal operation locally. Send the record to the platform via 4G network and return to step S2.

[0092] S6. Determine whether the hook is being held (whether the non-contact sensor is effective); if yes, proceed to step S61; otherwise, proceed to step S7.

[0093] S61. After detecting that the hand has not been released, wait for 1 second. If the duration is ≥60s, proceed to step S62; if the duration is <60s, return to step S6.

[0094] S22. After confirming that the hook is attached, hold it. Do not broadcast locally. Holding the hook and pressing is normal behavior. Record locally and send it to the platform via 4G network. Return to step S2.

[0095] S7. Release the grip after hooking (standard procedure);

[0096] S8 records locally and sends it to the platform via 4G network.

[0097] It should be noted that improving the accuracy of identifying the status of the safety belt hook 1 for high-altitude operations means that the voltage signal detected by the pressure detection component 4, the capacitance signal detected by the metal contact sensor 5, the high and low level signals detected by the touch detection component 7, and the high and low level signals detected by the opening and closing detection component 8 can be transmitted to the controller 101 using existing data transmission methods for logical judgment to identify the status of the safety belt hook 1 for high-altitude operations. Specifically, the identification process described above can be used for logical judgment. As the number of detection indicators increases, the identification accuracy is correspondingly improved. It should be noted that this embodiment only improves the structure of the hook 1 and does not involve any improvements to the program or circuitry.

[0098] During the signal transmission process of the pressure detection component 4, the capacitive non-contact sensing chip 52 in the metal contact sensing component 5, the touch detection component 7, and the tactile switch 82 in the opening and closing detection component 8, it is necessary to connect with the controller 101 (such as a single-chip microcomputer, microcontroller, etc.). The connection relationship between the above components and the controller 101, as well as the identification of the status of the high-altitude work safety belt hook 1 through logical judgment, are existing technologies.

[0099] For example, in the seat belt hook and its detection method disclosed in CN 117731975 A, pressure signal, opening signal, and closing signal can be acquired by a sensor module and sent to a logic judgment module for judgment. The logic judgment module calculates each signal (pressure signal, opening signal, closing signal) according to the stored logic to obtain the usage status of the seat belt hook. The main difference between the logic judgment function of the controller 101 in this embodiment and the logic judgment module in the prior art is that the signal types in this embodiment include the capacitance signal detected by the metal contact sensor 5 and the high and low level signals detected by the touch detection component 7. The logic judgment methods of both have the same implementation principle, which is to identify multiple signals in a specific order to obtain the usage status of the seat belt hook 1.

[0100] The publication number CN 118423346 A also discloses the connection method between the pressure sensor and the controller, which is the same as the connection method between the pressure detection element 4 and the controller 101 in this embodiment;

[0101] The connection method between the tactile switch and the controller is disclosed in CN 221229843 U, which is the same as the connection method between the tactile switch 82 and the controller 101 in the opening and closing detection device in this embodiment;

[0102] The connection method between the touch sensor and the controller is disclosed in CN223155193U, which is the same as the connection method between the touch detection component 7 and the controller 101 in this embodiment. The main difference between the touch sensor in this embodiment and the pressure sensor in the prior art is the different application scenarios. In this embodiment, the touch sensor is applied to the seat belt hook 1, while the pressure sensor in the prior art is applied to the photography equipment.

[0103] The connection method between the air-contact capacitive sensing circuit and the controller is disclosed in CN120342377A, which is the same as the connection method between the capacitive non-contact sensor of the metal contact sensing element 5 and the controller 101 in this embodiment. The main difference between the capacitive non-contact sensor in the metal contact sensing element 5 in this embodiment and the air-contact capacitive sensing circuit in the prior art is the different application scenarios. In this embodiment, the touch sensor is applied to the seat belt hook 1, while in the prior art, the pressure sensor is applied to the electric switch device.

[0104] In a more specific embodiment, the controller 101 is disposed inside the control box 10, which also includes a battery pack 102 connected to the controller 101 for powering the controller 101. The control box 10 is also provided with a cover 103, which is fixed to the control box 10 by a silicone plug 104.

[0105] In summary, this embodiment improves the accuracy of the hook 1's effective attachment by adding various pressure detection components 4, metal contact sensing components 5, touch detection components 7, and opening / closing detection components 8.

[0106] It should be noted that the terms used to describe positional relationships in the above examples and accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. The various embodiments of this utility model described above are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A device for improving the accuracy of identifying the status of safety belt hooks in high-altitude operations, characterized in that, include: A hook and a hook-up detection assembly; the hook-up detection assembly includes a pressure block, a pressure detection element, and a metal contact sensor; the pressure block is disposed on the inner wall of the hook, the pressure detection element is disposed between the pressure block and the inner wall of the hook, and the metal contact sensor is disposed on the side of the pressure block away from the pressure detection element; the pressure block is used to make pressure contact with the object being hooked, the pressure detection element is used to detect the pressure generated by the object being hooked on the pressure block, and the metal contact sensor is used to detect the contact between the object being hooked and the pressure block.

2. The device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 1, characterized in that, The pressure detection device includes an elastic deformation element and a strain gauge bridge circuit. The strain gauge bridge circuit includes a strain gauge disposed on the surface of the elastic deformation element. One end of the elastic deformation element is connected to the inner wall of the hook, and the other end is connected to the pressure block. The pressure block is used to displace when squeezed by the object being clamped, causing the elastic deformation element to bend. When the elastic deformation element bends, the strain gauge in the strain gauge is stretched or shortened, causing a change in the resistance value of the strain gauge. This results in the strain gauge bridge circuit generating a voltage signal that is positively correlated with the change in resistance value. The voltage signal is used to reflect the magnitude of the pressure exerted by the object being clamped on the pressure block.

3. The device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 2, characterized in that, The strain gauge bridge circuit adopts a strain gauge half-bridge circuit, which includes two strain gauges. The elastic deformation element includes two elastic deformation elements, which are symmetrically distributed on both sides of the center line of the hook arc. The two strain gauges are respectively disposed on the surface of the elastic deformation elements.

4. A device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 2 or 3, characterized in that, An elastic element is provided between the pressure block and the inner wall of the hook. The elastic element is used to prevent the elastic deformation element from being deformed by the weight of the pressure block itself when the hook is upside down.

5. The device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 1, characterized in that, The metal contact sensor includes a metal sensing electrode and a capacitive non-contact sensing chip. The metal sensing electrode is connected to the capacitive non-contact sensing chip. The metal sensing electrode is disposed on the part of the pressure block that contacts the object being fastened. The capacitive non-contact sensing chip is used to detect the change in capacitance signal caused by coupling with the metal sensing electrode when the object being fastened contacts the pressure block. The capacitance signal is used to reflect whether the object being fastened is in contact with the pressure block of the hook.

6. The device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 5, characterized in that, The outer side of the metal induction electrode is wrapped with an insulating layer.

7. The device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 1, characterized in that, It also includes touch detection components and opening / closing detection components; A locking element is provided at the opening of the hook. The rotating end of the locking element is hinged to the first end of the hook opening, and the movable end of the locking element abuts against the second end of the hook opening. The locking element is used to rotate around the first end of the hook and disengage from or abut against the second end of the hook to realize the opening and closing of the hook. The touch detection component is located on the outside of the hook and is used to sense whether the user's hand is in contact with the hook. The opening and closing detection component is used to sense whether the moving end of the locking member is in contact with or disengaged from the second end of the hook.

8. The device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 7, characterized in that, The device includes an external connector disposed on the outside of the hook and near the second end of the hook. The locking member has a protrusion near the rotating end. The opening and closing detection assembly includes a tactile switch disposed on the side of the external connector near the locking member. The protrusion is used to press the tactile switch when the movable end of the locking member disengages from the second end of the hook, and to release the tactile switch when the movable end of the locking member abuts against the second end of the hook.

9. The device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 8, characterized in that, The locking member is elastically connected to the external member, and the sensing area of ​​the touch detection component is located on the side of the external member away from the locking member, and coincides with the position of the elastic connection between the external member and the locking member.

10. The device for improving the accuracy of safety belt hook status recognition in high-altitude operations according to claim 7, characterized in that, The hook is also equipped with an attitude recognition component for obtaining the attitude of the hook.

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