Safety belt, safety belt lock catch alarm device and alarm method

Abstract

The invention relates to the technical field of safety ropes, and particularly discloses a safety belt, a safety belt lock catch alarm device and an alarm method.The safety belt lock catch alarm device comprises a lock catch alarm device body, a safety belt body, a hanging ring, a tower climbing rope and a hook. The safety belt wearing state is verified through a metal conducting strip in a hanging ring, and the foundation anchor point is reliable; the double hooks integrate metal conduction and mechanical pressing double switches, effective mounting of a metal or nonmetal area of the iron tower is accurately recognized, and the misjudgment defect of a traditional single detection mode is eliminated; the main control box is fused with multi-source signals to establish a grading decision, and when it is detected that a hanging ring is not fixed, double hooks are not mounted or single hook communication fails, sound-light alarm and internet-of-things remote early warning are triggered. According to the alarm method, the false alarm rate can be compressed to be nearly zero, the accident response efficiency is remarkably improved, and a fixed end-dynamic end-equipment end full-link protection system is constructed.

Description

Technical Field

[0001] The present invention relates to the technical field of safety ropes, and in particular to a safety belt, a safety belt buckle alarm device and an alarm method. Background Art

[0002] Aerial work safety harnesses are essential protective equipment for height-based work in industries like power generation and telecommunications. Traditional safety harnesses lack real-time status monitoring, making it impossible for workers to confirm whether the hook is securely attached to the pole or tower anchor point. This poses a significant risk of hook failure or accidental unhooking, especially within the complex steel structure of a tower.

[0003] In recent years, intelligent monitoring technology has been gradually applied to seatbelt systems. For example, Chinese Patent Publication No. CN118692205A discloses an active warning system for preventing falls. This technology uses a contact switch to detect the connection between the safety rope and the hook, and uses wireless communication to provide a disconnection warning, emphasizing its long-range advantages.

[0004] However, this type of existing early warning system has a fundamental flaw: its single contact switch detection mechanism lacks a redundant design. When the hook is mounted on a non-metallic part of the tower (such as a concrete base or composite insulation material), the system may mistakenly judge it as "unconnected" because the metal contact is not triggered; conversely, if the hook contacts the metal but is not stuck in the load-bearing structure, the system cannot identify the risk of physical unhooking. What's more serious is that the existing technology only monitors the connection status of a single hook, which neither covers the hanging ring status of the fixed end of the safety belt body nor adapts to the dynamic scenario of alternating double hooks during tower operations. Once the operator fails to use a single hook or both hooks are not mounted during the climbing process, the system will still miss the high-risk status due to the lack of hierarchical detection logic. The limitations of this single-point detection make it difficult for existing technologies to meet the safety requirements of complex high-altitude operations.

[0005] Therefore, the above problems need to be solved urgently. Summary of the Invention

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a seat belt, a seat belt buckle alarm device and an alarm method to solve the above-mentioned problems.

[0007] A seat belt buckle alarm device, comprising:

[0008] The first lock buckle includes a first switch and a first signal feedback module; the first switch is triggered by contacting and conducting two first conductive plates spaced apart by a metal hook, and the first signal feedback module is used to feedback a power-on signal of the first switch;

[0009] The second lock buckle includes a second switch, a third switch, and a second signal feedback module; the second switch is triggered by contacting and conducting two spaced-apart second conductive plates via a metal hook, and the third switch is triggered by pressing the iron tower; the second signal feedback module is used to feedback a power-on signal of the second switch and / or a trigger signal of the third switch;

[0010] Main control box, including signal receiving module, main control module and alarm module;

[0011] The signal receiving module is communicatively connected to the first signal feedback module and the second signal feedback module, and is configured to receive the power-on signal of the first switch, the power-on signal of the second switch and / or the trigger signal of the third switch;

[0012] The main control module determines whether the alarm condition is met according to the received signal, and controls the alarm module to perform the alarm operation.

[0013] Specifically, the main control box has a built-in Bluetooth module, and there are two second lock buckles, each of which is equipped with an independent Bluetooth submodule;

[0014] The Bluetooth module of the main control box establishes a one-to-many communication connection with the Bluetooth sub-modules of the two second lock buckles, and is used to receive trigger signals and status information of the two second lock buckles.

[0015] Specifically, the alarm module is a buzzer, and its alarm modes include:

[0016] First alarm mode: When the Bluetooth module of the main control box is successfully connected to the Bluetooth sub-modules of the two second lock buckles, the buzzer will emit a continuous short beep to indicate that the connection is normal;

[0017] Second alarm mode: When the Bluetooth module of the main control box is connected to only one Bluetooth sub-module of the second lock, the buzzer will emit an intermittent long beep alarm;

[0018] The third alarm mode: When neither the first lock buckle nor the second lock buckle triggers a signal, the buzzer will emit a continuous rapid alarm.

[0019] Specifically, the main control box further includes an Internet of Things module, which communicates with the mobile terminal via a wireless network and pushes Bluetooth connection status and alarm information to the mobile terminal in real time.

[0020] A safety belt, comprising the buckle alarm device, further comprising:

[0021] A safety belt body and a hanging ring, wherein the hanging ring is fixed to the safety belt body, and the first lock buckle is arranged in the hanging ring;

[0022] Two climbing ropes and two hooks, each hook corresponding to a second carabiner;

[0023] One end of the tower climbing rope is connected to the hook, and the other end is connected to the hanging ring through a metal hook;

[0024] The second switch and the third switch of the second lock are arranged inside the hook.

[0025] Specifically, the third switch includes:

[0026] a hook-shaped contact piece, one end of which is hinged to the hook and the other end is a free end;

[0027] Push-type micro switch, located inside the hook;

[0028] When the hook is mounted on the iron tower, the free end of the hook-shaped contact piece is squeezed and rotated by the iron tower, triggering the push-type micro switch.

[0029] Specifically, the hook-shaped contact piece is made of metal and is electrically connected to any one of the second conductive pieces;

[0030] When the hook-shaped contact piece is pressed and rotated, the circuit of the second switch is turned on at the same time.

[0031] A safety belt buckle alarm method, using the safety belt, comprises the following steps:

[0032] S1 wearing and powering on: Wear the safety belt on the operator's body and start the power of the main control box;

[0033] S2 Bluetooth connection detection: The main control box searches and connects to the two second lock buckle Bluetooth sub-modules through the Bluetooth module;

[0034] S3 trigger signal detection:

[0035] Detecting whether the first switch of the first lock is turned on;

[0036] Detecting whether the second switches and / or the third switches of the two second locks are triggered;

[0037] S4 alarm logic judgment:

[0038] If the first lock is triggered and at least one second lock is triggered, it is determined to be safe and the alarm module is silent;

[0039] If the first lock buckle is not triggered, or all the second lock buckles are not triggered, it is determined to be unsafe, and the alarm module is controlled to perform a graded alarm operation.

[0040] Specifically, in step S4, the alarm logic determination, the hierarchical alarm operation includes:

[0041] First alarm scenario: When the first lock is not triggered, the buzzer emits a continuous high-frequency alarm sound, and the IoT module pushes the "hanging ring not connected" alarm;

[0042] Second alarm scenario: When the first lock buckle is triggered but all second lock buckles are not triggered, the buzzer emits an intermittent medium-frequency alarm sound, and the IoT module pushes a "hook not mounted" alarm;

[0043] The third alarm scenario: When the main control box Bluetooth module is connected to only one second lock Bluetooth sub-module, the buzzer emits a low-frequency long beep, and the IoT module pushes a "single hook connection" alarm.

[0044] Specifically, the trigger signal detection in step S3 further includes:

[0045] The trigger status of the first lock buckle and the two second lock buckles is uploaded to the mobile terminal in real time through the Internet of Things module to form a security operation log;

[0046] If all second locks are not triggered within a certain period of time, it is judged as a high-risk state, and the IoT module pushes an emergency alarm of "long time without mounting".

[0047] Beneficial effects of the present invention:

[0048] The safety belt, safety belt buckle alarm device, and alarm method disclosed in this application address the risks of false hooking and unhooking of safety belts during high-altitude work. This application adopts a triple collaborative monitoring mechanism. Specifically, the metal conductive sheet inside the hanging loop verifies the wearing status of the safety belt in real time to ensure the reliability of the basic anchor point. The double hooks integrate metal conduction and mechanical pressure dual switches to accurately identify effective mounting on the metal or non-metallic area of the tower, eliminating the misjudgment defects of traditional single detection methods. At the same time, Bluetooth connection monitors the integrity of the double hook equipment in real time. The main control box integrates multi-source signals to establish a hierarchical decision. When it detects that the hanging loop is not fixed, both hooks are not mounted, or the communication of a single hook fails, it triggers an audible and visual alarm and an IoT remote warning. This alarm method can reduce the false alarm rate to almost zero, significantly improve the efficiency of accident response, and establish a full-link protection system of "fixed end-dynamic end-device end". BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A three-dimensional diagram of the hanging ring and the first lock buckle of Example 1;

[0050] Figure 2 for Figure 1 Sectional view along line AA;

[0051] Figure 3 is a three-dimensional diagram of the hook and the second lock buckle of Example 1;

[0052] Figure 4 is a cross-sectional view of the hook and the second lock buckle of Example 1;

[0053] Figure 5 This is a three-dimensional diagram of the main control box of Example 1;

[0054] Figure 6 is a perspective view of the safety belt of Example 1;

[0055] Figure 7 This is a three-dimensional diagram of the safety belt of Example 2.

[0056] The reference numerals in the drawings are: first switch 10, metal hook 20, first conductive sheet 11, second switch 30, third switch 40, second conductive sheet 31, main control box 50, safety belt body 61, hanging ring 62, tower climbing rope 63, hook 64, hook-shaped contact sheet 41, push-type micro switch 42, and connecting belt 70. DETAILED DESCRIPTION

[0057] The present invention provides a seat belt, a seat belt buckle alarm device, and an alarm method. To make the objectives, technical solutions, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention.

[0058] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0059] Example 1

[0060] Please refer to Figures 1 to 6 The safety belt of this embodiment includes a lock alarm device, a safety belt body 61, a hanging ring 62, two tower climbing ropes 63 and two hooks 64; wherein, the lock alarm device includes a first lock, a second lock and a main control box 50; the hanging ring 62 is fixed to the safety belt body 61, and the first lock is arranged in the hanging ring 62; each hook 64 corresponds to a second lock; one end of the tower climbing rope 63 is connected to the hook 64, and the other end is connected to the hanging ring 62 through the metal hook 20; the second switch 30 and the third switch 40 of the second lock are arranged inside the hook 64.

[0061] The operator first dons the safety harness body 61 and secures it to the body, then secures the loop 62 to the harness body 61. The operator then clips the metal hooks 20 at the ends of the two climbing ropes 63 into the loops 62. The metal hooks 20 then contact the two first conductive plates 11 inside the loops 62. The two first conductive plates 11 contact the metal hooks 20, causing a current to flow, triggering the first switch 10 of the first buckle, confirming the safety harness's fixed end status. When climbing a tower, the operator holds a hook 64 in each hand. When the left hook 64 is attached to a tower beam, the two second conductive plates 31 on the hook 64 contact the beam, triggering the second switch 30. Simultaneously, the hook-shaped contact piece 41, squeezed by the beam, rotates, triggering the push-type microswitch 42, activating the third switch 40. The right hook 64 is then attached to an adjacent tower crossarm, repeating this double-triggering process. During the alternating climbing process, if any hook 64 is not effectively mounted, for example, it only contacts non-metallic parts or is not stuck in the structural gap, the second switch 30 and the third switch 40 have no signal feedback, and the main control box 50 immediately issues a graded alarm through the buzzer and the Internet of Things module.

[0062] This embodiment utilizes a dual triggering mechanism between the first lock buckle at the fixed end of the hook 62 and the dynamic end of the dual hooks 64 to achieve a three-level coordinated warning system: the first level ensures the safety belt body 61 is securely donned, the second level verifies the effective attachment of the dual hooks 64, and the third level monitors device integrity via Bluetooth connection status. The main control box 50 integrates multiple signals for redundant judgment, completely eliminating the misjudgment problem of a single detection mechanism in complex tower environments. Simultaneously, the IoT module delivers real-time notifications of risk scenarios, providing comprehensive safety assurance for high-altitude operations.

[0063] The first lock includes a first switch 10 and a first signal feedback module; the first switch 10 is triggered by contacting and conducting two spaced first conductive plates 11 through a metal hook 20, and the first signal feedback module is used to feedback the power-on signal of the first switch 10.

[0064] The triggering mechanism of the first buckle is based on the principle of metal conductivity: when the metal hook 20 is inserted into the loop 62 and contacts the two spaced-apart first conductive plates 11, the metal hook 20 acts as a conductor, bridging the two first conductive plates 11 to form a closed loop, thereby energizing the first switch 10. The first signal feedback module monitors the current changes in this loop in real time, converting the power-on signal from the first switch 10 into an electrical signal and feeding it back to the main control box 50, thereby electronically identifying the connection between the loop 62 and the seatbelt body 61.

[0065] The first signal feedback module of this embodiment uses a wired direct connection to feed back the power-on signal of the first switch 10 to the main control box 50. Specifically, a dual-core shielded cable is used to directly connect the first signal feedback module and the signal receiving module of the main control box 50, and the trigger state is transmitted by the change in the level signal. This method is the optimal solution for anti-interference because the hanging ring 62 is at a fixed distance from the main control box 50 and does not require an additional communication protocol. Of course, wired direct connection is only one preferred method. In other embodiments, LoRa wireless transmission can also be used to cope with high-voltage electromagnetic environments, or power carrier communication can be achieved through the metal wire inside the climbing rope 63. The main control box 50 adaptively analyzes different signal sources to ensure the reliability of signal feedback for the entire system.

[0066] The second lock includes a second switch 30, a third switch 40 and a second signal feedback module; the second switch 30 is triggered by contacting and conducting two spaced second conductive plates 31 through the metal hook 20, and the third switch 40 is triggered by pressing the iron tower. The second signal feedback module is used to feedback the power-on signal of the second switch 30 and / or the trigger signal of the third switch 40.

[0067] The second latch's dual-trigger design integrates the principles of metal conduction and mechanical induction: when hook 64 is mounted on the tower, the metal tower contacts two spaced-apart second conductive plates 31, forming a circuit and energizing the second switch 30. Simultaneously, the hook-shaped contact plate 41, squeezed by the tower, rotates about its hinge point, triggering a push-type microswitch 42 to activate the third switch 40. A second signal feedback module collects the power-on signal from the second switch 30 and / or the trigger signal from the third switch 40 in real time, transmitting the composite electrical signal to the main control box 50 via a two-core shielded cable, thus providing dual verification of the hook's dynamic mounting status.

[0068] This embodiment completely solves the problem of misjudgment of mounting in non-metallic areas of the tower through a dual-switch parallel monitoring mechanism (metal conduction + physical pressure): if the hook 64 only contacts the metal beam but does not get stuck in the structural gap, the second switch 30 is triggered and the third switch 40 has no signal, and the system determines it as a risky mounting; if it gets stuck in a non-metallic gap, the reverse signal combination is triggered.

[0069] The second signal feedback module of this embodiment preferably uses a bending-resistant shielded cable to directly connect to the main control box 50 to ensure signal stability in mobile scenarios; of course, this wired solution is only a better solution. In long-distance climbing scenarios, LoRa anti-interference transmission can also be switched, or the internal metal wire of the tower climbing rope 63 can be reused for carrier communication. The main control box 50 automatically analyzes the switch state combination through signal feature recognition technology.

[0070] The main control box 50 includes a signal receiving module, a main control module and an alarm module; the signal receiving module is communicatively connected to the first signal feedback module and the second signal feedback module, and is used to receive the power-on signal of the first switch 10, the power-on signal of the second switch 30 and / or the trigger signal of the third switch 40; the main control module determines whether the alarm condition is met based on the received signal, and controls the alarm module to perform the alarm operation.

[0071] The main control box 50 of this embodiment collects three heterogeneous signals in real time through the signal receiving module: the power-on signal of the first switch 10 from the first signal feedback module (indicating the fixed state of the hanging ring 62), the power-on signal of the second switch 30 from the second signal feedback module (the metal contact state of the hook 64), and the trigger signal of the third switch 40 (the mechanical engagement state of the hook 64). The main control module adopts a multi-source signal fusion strategy to establish a hierarchical decision tree: first, the connection integrity of the Bluetooth submodule is verified, then the conduction of the first switch 10 is verified as a basic safety anchor point, and finally, the switch combination signal of the dual hooks 64 is dynamically analyzed (the AND / OR logic of the second switch 30 and the third switch 40). When "Bluetooth single point disconnection", "hanging ring 62 is not fixed", or "both hooks 64 are not effectively mounted" is detected, the alarm module is triggered to execute the preset sound and light alarm mode.

[0072] This embodiment overcomes the limitations of traditional single-threshold detection, achieving triple-layer safety perimeter protection: The first layer monitors device integrity through Bluetooth connection status, eliminating the risk of communication failure; the second layer utilizes the first switch 10 to enforce wearability of the safety belt body 61; and the third layer, based on the combined logic of the second switch 30 and the third switch 40 (metal conduction + mechanical pressure), accurately identifies complex failure scenarios such as false hooking, unbalanced loading, and non-metallic engagement of the hook 64. The main control box 50 accelerates high-altitude fall risk identification through millisecond-level signal fusion and rapid decision-making response. Simultaneously, the IoT module simultaneously pushes risk type and location information, establishing a comprehensive protection system combining local warning and remote monitoring.

[0073] The main control box 50 has a built-in Bluetooth module. There are two second lock buckles, and each second lock buckle is equipped with an independent Bluetooth sub-module. The Bluetooth module of the main control box 50 establishes a one-to-many communication connection with the Bluetooth sub-modules of the two second lock buckles to receive the trigger signals and status information of the two second lock buckles. The Bluetooth module of the main control box 50 acts as the host and establishes a synchronous connection with the Bluetooth sub-modules of the two second lock buckles through broadcast scanning. It uses time-division multiplexing technology to receive the trigger signals of the dual hooks 64 (the status of the second switch 30 / the third switch 40) and monitor the dynamics of the hooks in real time. Dual-channel independent communication is used to achieve device-level redundancy: the disconnection of any Bluetooth sub-module triggers a single hook detachment warning, and combined with the trigger signal combination judgment, it reduces the risk of communication failure during high-altitude operations.

[0074] The alarm module in this embodiment is a buzzer, and its alarm modes include:

[0075] First alarm mode: When the Bluetooth module of the main control box 50 is successfully connected to the Bluetooth sub-modules of the two second lock buckles, the buzzer emits a continuous short beep to indicate that the connection is normal;

[0076] Second alarm mode: When the Bluetooth module of the main control box 50 is connected to only one Bluetooth sub-module of the second lock buckle, the buzzer emits an intermittent long alarm;

[0077] The third alarm mode: When neither the first lock buckle nor the second lock buckle triggers a signal, the buzzer will emit a continuous rapid alarm.

[0078] The main control box 50 also includes an Internet of Things module, which communicates with a mobile terminal (such as a mobile phone) via a wireless network and pushes Bluetooth connection status and alarm information to the mobile terminal in real time. Specifically, the main control box 50's Internet of Things module monitors the Bluetooth connection status (dual / single / disconnected) and the lock trigger signal (first switch 10 / second switch 30 / third switch 40 status) in real time, and pushes it to the mobile terminal via the 4G / 5G network using the MQTT protocol. The data includes timestamps and GPS positioning, and the cloud automatically generates a risk log.

[0079] The third switch 40 comprises a hook-shaped contact piece 41 and a push-type microswitch 42. One end of the hook-shaped contact piece 41 is hinged to the hook 64, while the other end is free. The push-type microswitch 42 is located inside the hook 64. When the hook 64 is mounted on the tower, the free end of the hook-shaped contact piece 41 is squeezed and rotated by the tower, triggering the push-type microswitch 42. When the operator attaches the hook 64 to the tower's steel beam, the free end of the hook-shaped contact piece 41 first contacts the tower surface. As the hook 64 continues to press downward, the steel beam exerts a vertical compressive force on the free end, driving the hook-shaped contact piece 41 to rotate about the hinge axis toward the inside of the hook 64. When the rotation angle reaches 15°-20°, the end of the hook-shaped contact piece 41 precisely presses the spring of the built-in push-type microswitch 42, triggering the third switch 40 to conduct. If the hook 64 is stuck in a non-metallic gap, the continued pressure on the hook-shaped contact piece 41 will maintain its rotation, keeping the third switch 40 activated.

[0080] The hook-shaped contact piece 41 is made of metal and is electrically connected to any second conductive piece 31; when the hook-shaped contact piece 41 is pressed and rotated into place, the two second conductive pieces 31 are connected, that is, the circuit of the second switch 30 is turned on, and a single action realizes the dual signal collection of metal conduction and mechanical pressing.

[0081] This embodiment also discloses a seat belt buckle alarm method, which uses the above-mentioned seat belt and includes the following steps:

[0082] S1 Wearing and powering on: Wear the safety belt on the operator's body and start the power of the main control box 50;

[0083] S2 Bluetooth connection detection: the main control box 50 searches for and connects to the Bluetooth sub-modules of the two second lock buckles through the Bluetooth module;

[0084] S3 trigger signal detection:

[0085] Detecting whether the first switch 10 of the first lock is turned on;

[0086] Detect whether the second switches 30 and / or the third switches 40 of the two second locks are triggered;

[0087] S4 alarm logic judgment:

[0088] If the first lock is triggered and at least one second lock is triggered, it is determined to be safe and the alarm module is silent;

[0089] If the first lock buckle is not triggered, or all the second lock buckles are not triggered, it is determined to be unsafe, and the alarm module is controlled to perform a graded alarm operation.

[0090] This method achieves essential assessment of the safety status of aerial work through triple verification (fixed-end anchor point confirmation, dual dynamic hook status monitoring, and Bluetooth device integrity verification). A hierarchical alarm mechanism reduces false alarm rates to near zero. Furthermore, IoT-enabled collaboration builds a comprehensive "local-remote" safety network, improving incident response efficiency in complex tower scenarios.

[0091] Furthermore, in step S4, the alarm logic determination, the hierarchical alarm operation includes:

[0092] First alarm scenario: When the first lock is not triggered, the buzzer emits a continuous high-frequency alarm sound, and the IoT module pushes the "hanging ring not connected" alarm;

[0093] Second alarm scenario: When the first lock buckle is triggered but all second lock buckles are not triggered, the buzzer emits an intermittent medium-frequency alarm sound, and the IoT module pushes a "hook not mounted" alarm;

[0094] The third alarm scenario: When the Bluetooth module of the main control box 50 is only connected to one second lock Bluetooth sub-module, the buzzer emits a low-frequency long beep, and the Internet of Things module pushes a "single hook connection" alarm.

[0095] Furthermore, the trigger signal detection in step S3 further includes:

[0096] The trigger status of the first lock buckle and the two second lock buckles is uploaded to the mobile terminal in real time through the Internet of Things module to form a security operation log;

[0097] If all second locks are not triggered within a certain period of time, it is judged as a high-risk state, and the IoT module pushes an emergency alarm of "long time without mounting".

[0098] Example 2

[0099] Please refer to Figure 7 The application scenario of this embodiment is pole tower climbing. Only the hanging ring 62 and the first lock buckle are used in combination with the metal hook 20 and the connecting belt 70. When climbing the pole tower, the metal hook 20 at one end of the connecting belt 70 is buckled on the hanging ring 62. The metal hook 20 contacts the two first conductive plates 11 in the hanging ring 62. The two first conductive plates 11 contact the metal hook 20 and are conductive, triggering the first switch 10 of the first lock buckle, completing the preparation before climbing the tower. The main control box 50 detects the power-on signal of the first switch 10 fed back by the first signal feedback module, and the buzzer does not sound an alarm. If the power-on of the first switch 10 fails, the main control box 50 immediately controls the buzzer to alarm.

[0100] The above specifically describes the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A seat belt buckle alarm device, characterized in that: include: The first lock comprises a first switch (10) and a first signal feedback module; the first switch (10) is triggered by contacting and conducting two first conductive sheets (11) spaced apart via a metal hook (20); the first signal feedback module is used to feed back a power-on signal of the first switch (10); The second lock buckle comprises a second switch (30), a third switch (40) and a second signal feedback module; the second switch (30) is triggered by contacting and conducting two spaced second conductive sheets (31) through a metal hook (20), the third switch (40) is triggered by pressing the iron tower, and the second signal feedback module is used to feed back a power-on signal of the second switch (30) and / or a trigger signal of the third switch (40); A main control box (50), comprising a signal receiving module, a main control module and an alarm module; The signal receiving module is communicatively connected to the first signal feedback module and the second signal feedback module, and is used to receive the power-on signal of the first switch (10), the power-on signal of the second switch (30) and / or the trigger signal of the third switch (40); The main control module determines whether the alarm condition is met according to the received signal, and controls the alarm module to perform the alarm operation.

2. The seat belt buckle alarm device according to claim 1, characterized in that: The main control box (50) has a built-in Bluetooth module, and the number of the second lock buckles is two, and each second lock buckle is provided with an independent Bluetooth submodule; The Bluetooth module of the main control box (50) establishes a one-to-many communication connection with the Bluetooth submodules of the two second lock buckles, and is used to receive trigger signals and status information of the two second lock buckles.

3. The seat belt buckle alarm device according to claim 2, characterized in that: The alarm module is a buzzer, and its alarm modes include: First alarm mode: when the Bluetooth module of the main control box (50) is successfully connected to the Bluetooth submodules of the two second lock buckles, the buzzer emits a continuous short beep to prompt a normal connection; Second alarm mode: when the Bluetooth module of the main control box (50) is connected to only one Bluetooth submodule of the second lock, the buzzer emits an intermittent long alarm; The third alarm mode: when neither the first lock buckle nor the second lock buckle triggers a signal, the buzzer emits a continuous rapid alarm.

4. The seat belt buckle alarm device according to claim 3, characterized in that: The main control box (50) further comprises an Internet of Things module, which communicates with the mobile terminal via a wireless network and pushes Bluetooth connection status and alarm information to the mobile terminal in real time.

5. A safety belt, characterized in that: The lock alarm device according to any one of claims 3 to 4 further comprises: A safety belt body (61) and a hanging ring (62), wherein the hanging ring (62) is fixed to the safety belt body (61), and the first lock buckle is arranged in the hanging ring (62); Two tower climbing ropes (63) and two hooks (64), each hook (64) corresponding to a second lock buckle; One end of the tower climbing rope (63) is connected to the hook (64), and the other end is connected to the hanging ring (62) through a metal hook (20); The second switch (30) and the third switch (40) of the second lock are arranged inside the hook (64).

6. The safety belt according to claim 5, characterized in that: The third switch (40) comprises: a hook-shaped contact piece (41), one end of which is hinged to the hook (64) and the other end is a free end; A push-type micro switch (42) is provided inside the hook (64); When the hook (64) is mounted on the iron tower, the free end of the hook-shaped contact piece (41) is squeezed and rotated by the iron tower, triggering the push-type micro switch (42).

7. The safety belt according to claim 6, characterized in that: The hook-shaped contact piece (41) is made of metal and is electrically connected to any one of the second conductive pieces (31); When the hook-shaped contact piece (41) is pressed and rotated, the circuit of the second switch (30) is turned on at the same time.

8. A seat belt buckle alarm method, using the seat belt according to any one of claims 5 to 7, characterized in that: The following steps are involved: S1 Wearing and powering on: Wear the safety belt on the operator's body and start the power of the main control box (50); S2 Bluetooth connection detection: the main control box (50) searches for and connects to the two Bluetooth submodules of the second lock buckles through the Bluetooth module; S3 trigger signal detection: Detecting whether a first switch (10) of a first lock buckle is turned on; Detecting whether the second switches (30) and / or the third switches (40) of the two second locks are triggered; S4 alarm logic judgment: If the first lock is triggered and at least one second lock is triggered, it is determined to be safe and the alarm module is silent; If the first lock buckle is not triggered, or all the second lock buckles are not triggered, it is determined to be unsafe, and the alarm module is controlled to perform a graded alarm operation.

9. The seat belt buckle alarm method according to claim 8, characterized in that: In step S4, the alarm logic determination, the hierarchical alarm operation includes: First alarm scenario: When the first lock is not triggered, the buzzer emits a continuous high-frequency alarm sound, and the IoT module pushes the "hanging ring not connected" alarm; Second alarm scenario: When the first lock is triggered but all second locks are not triggered, the buzzer emits an intermittent medium-frequency alarm sound, and the IoT module pushes a "hook not mounted" alarm; The third alarm scenario: when the Bluetooth module of the main control box (50) is connected to only one second lock Bluetooth submodule, the buzzer emits a low-frequency long beep, and the Internet of Things module pushes a "single hook connection" alarm.

10. The seat belt buckle alarm method according to claim 8, characterized in that: The trigger signal detection in step S3 further includes: The trigger status of the first lock buckle and the two second lock buckles is uploaded to the mobile terminal in real time through the Internet of Things module to form a security operation log; If all second locks are not triggered within a certain period of time, it is judged as a high-risk state, and the IoT module pushes an emergency alarm of "long time without mounting".

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