Safety island alarm system for collision of gate container truck

Abstract

The invention belongs to the technical field of intelligent security alarm, and particularly relates to a gate container truck collision safety island alarm system, which comprises a double-layer steel plate arranged in an easily-collided area of a safety island and comprising an outer-layer steel plate and an inner-layer steel plate with different thicknesses; a gap exists between the outer-layer steel plate and the inner-layer steel plate; one end of the relay module is connected with a closed loop formed by contacting the outer-layer steel plate and the inner-layer steel plate, and the other end is connected to a switch network; the intelligent security and protection management and control platform receives the signal transmitted by the switch network, triggers an alarm event and is linked with the monitoring equipment; the monitoring equipment is used for capturing a monitoring picture and acquiring vehicle license plate information; and the management end is used for popping up a window to prompt the vehicle license plate information and popping up an alarm video on a display screen to remind field personnel to quickly process. Through double-layer steel plate structure design and intelligent security and protection system linkage, real-time monitoring and alarm prompting can be achieved, and good market application prospects are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of intelligent security alarm, and in particular relates to a gate container truck collision safety island alarm system. Background Art

[0002] At loading and unloading sites such as ports and logistics parks, container trucks frequently enter and exit, and are prone to collisions with the safety islands in the gate area, causing damage to equipment and even affecting the normal operation of the gate and the safety of personnel. The existing safety protection technologies mainly include the following: First, use elastic materials (such as rubber and polyurethane) to cover the surface of the safety island to reduce the impact force; second, set up invisible barriers around the safety island through photoelectric or infrared sensors, and send out alarm signals once the container trucks are too close or enter the dangerous area; third, combine cameras and computer vision technology to analyze the distance between the vehicle and the safety island, and trigger an alarm when the vehicle is too close; fourth, install acceleration sensors on the vehicle to detect sudden deceleration to identify possible collision events.

[0003] However, the existing safety protection technology still has many shortcomings. For example, although the use of elastic materials to cover the surface of the safety island can reduce the impact force and mitigate the impact, the buffer material cannot provide real-time impact feedback. Simply reducing the impact force cannot determine the specific location and degree of the impact; setting up invisible barriers around the safety island through photoelectric or infrared sensors can effectively detect the approach of vehicles, but the environmental adaptability of photoelectric and infrared sensors and video surveillance is poor and easily interfered. They may fail in rain, snow, strong winds, and dusty environments, and cannot detect real collision events; combining cameras and computer vision technology can provide video evidence, but the real-time performance is insufficient, and there are visual blind spots, which are not suitable for all scenarios; installing acceleration sensors on vehicles depends on the vehicle's sensor system and cannot directly provide protection for fixed infrastructure. In addition, the sensor layout is complex and costly. Many photoelectric, infrared or acceleration sensors require a lot of wiring or configuration to achieve large-scale monitoring, resulting in high installation and maintenance costs.

[0004] The existing safety protection technology solutions also have the problem of insufficient alarm accuracy, which can only warn of potential approaching risks, but not directly detect actual collision events, so it is easy to generate false alarms. To this end, this application provides a gate truck collision safety island alarm system, which can trigger an alarm at the moment of a truck collision safety island event, and link the monitoring camera to capture the license plate information of the collision vehicle in time to improve the accuracy of accident recording and response speed.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0006] The object of the present invention is to provide a collision safety island alarm system for container trucks at the gate, aiming to achieve real-time monitoring and alarm prompts through the design of a double-layer steel plate structure and the linkage of an intelligent security system.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A collision safety island alarm system for container trucks at the gate, comprising:

[0009] A double-layer steel plate, arranged in the vulnerable impact area of the safety island, including an outer steel plate and an inner steel plate with different thicknesses; there is a gap between the outer steel plate and the inner steel plate;

[0010] A relay module, one end of which is connected to the closed loop formed by the contact of the outer steel plate and the inner steel plate, and the other end is connected to the switch network;

[0011] An intelligent security control platform, which receives the signal transmitted by the switch network, triggers an alarm event and links the monitoring equipment; the monitoring equipment is used to capture the monitoring picture and obtain the vehicle license plate information;

[0012] A management terminal, which is used to pop up and display the vehicle license plate information, and pop up an alarm video on the display screen to remind the on-site personnel to handle it quickly.

[0013] Preferably, both the outer steel plate and the inner steel plate are made of Q345 steel plate with a surface area of 2 square meters.

[0014] Preferably, the thickness of the outer steel plate is 5 mm, and the thickness of the inner steel plate is 10 mm; the gap between the outer steel plate and the inner steel plate is 3 mm.

[0015] Preferably, the design basis of the double-layer steel plate includes the following steps:

[0016] Step 1: Calculate the kinetic energy of the container truck;

[0017] Step 2: Calculate the impact force;

[0018] Step 3: Calculate the stress of the double-layer iron plate;

[0019] Step 4: Determine the stress distribution under the action of the impact force;

[0020] Step 5: Compare with the yield strength of the Q345 steel plate;

[0021] Step 6: Simulate the instantaneous deflection.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The collision safety island alarm system for container trucks at the gate of the present invention, through the double-layer steel plate structure design, can quickly trigger a closed circuit when the container truck actually impacts the safety island, realizing real-time alarm for the impact event and avoiding false alarms and delays existing in simply relying on early warning or monitoring.

[0024] (2) The collision safety island alarm system for container trucks at the gate of the present invention, the double-layer steel plate structure is not affected by environmental factors such as light, rain, snow, and dust, and is suitable for stable operation in various complex environments.

[0025] (3) The collision safety island alarm system for container trucks at the gate of the present invention, through a simple double-layer steel plate design, eliminates the complexity of a large amount of wiring and sensor configuration in the traditional scheme, significantly reduces the installation and maintenance costs, and is convenient for large-scale deployment.

[0026] (4) The collision safety island alarm system for container trucks at the gate of the present invention can transmit the closed signal to the backend intelligent security platform through a relay, realizing real-time linkage processing of alarm information, including functions such as video capture and alarm pop-up windows, enabling management personnel to receive the alarm and obtain real-time video in the first time. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the deformation of the double-layer steel plate structure before and after impact;

[0028] Figure 2 is the network topology diagram of the embodiment of the present invention. Detailed Embodiments

[0029] The technical solutions of the present invention patent will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work belong to the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the invention.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Referring to the attached Figure 1-2 , a gantry container truck collision safety island alarm system realizes real-time monitoring and alarm prompt through the double-layer steel plate structure design and the linkage of the intelligent security system.

[0033] Both double-layer steel plates are made of Q345 steel plates and are laid in the vulnerable impact area of the safety island, with a surface area of 2㎡. Among them, the thickness of the outer steel plate is 5 mm so that it will deform first when the container truck collides; the thickness of the inner steel plate is 10 mm to ensure the rigidity of the inner layer. The gap between the two steel plates is 3 mm, which can ensure rapid contact when the impact occurs and avoid false triggering when affected by wind and vibration in the normal environment.

[0034] Under normal circumstances, the outer steel plate will not contact the inner steel plate. When an external container truck collides with the safety island area, the outer steel plate will be impacted by force and deformed, contacting the inner steel plate to form a closed circuit. The outer steel plate can be designed with a smooth surface or appropriately sprayed to reduce friction and stress concentration areas and evenly distribute the impact force. The spray can use wear-resistant and impact-resistant coating materials (such as polyurethane coating) to extend the service life and reduce the local stress concentration caused by the impact.

[0035] Considering that the speed of the container truck near the safety island is generally not higher than 30 km / h, the mass of the container truck is about 20,000 kg (the mass of a typical heavy-duty truck), the surface area of the steel plate is 2㎡, and assuming the collision duration Δt is 0.1 s; the double-layer steel plate design is based on the following steps, including:

[0036] Step 1: Calculate the kinetic energy of the container truck;

[0037] First, calculate the kinetic energy of the container truck before the impact to determine the energy conversion during the impact process:

[0038]

[0039] Substitute the values:

[0040]

[0041] The calculation result is:

[0042]

[0043] Step 2: Calculate the impact force;

[0044] Assume that the container truck undergoes instantaneous deceleration when hitting the double-layer steel plate. We can use the relationship between force and momentum:

[0045]

[0046] Regard the change in velocity as the change from the initial velocity to zero. Substitute the data:

[0047]

[0048] The calculation shows that:

[0049]

[0050] Step 3: Calculate the stress of the double-layer iron plate;

[0051] Stress is defined as force divided by the surface area of action. Assume that the surface area of the impact area is 2 square meters:

[0052]

[0053] Substitute the values:

[0054]

[0055] Step 4: Determine the stress distribution under the impact force;

[0056] Assume that the impact is concentrated on a small area, and the steel plate surface will bear a concentrated load. If we assume that the load is concentrated in a single collision area (assumed to be 2 square meters), the surface stress of the steel plate is approximately 0.833 MPa.

[0057] Step 5: Compare with the yield strength of Q345 steel plate;

[0058] The yield strength of the Q345 steel plate is 345 MPa, which is much higher than 0.833 MPa. Therefore, this impact force is not sufficient to cause the entire steel plate to reach the yield state, that is, the steel plate will not produce permanent deformation and can recover after the impact ends.

[0059] Step 6: Simulate the instantaneous deflection (estimation);

[0060] Assume that the steel plate bends under the ultimate state and may produce deflection under a specific impact strength:

[0061] For a 5 mm thick Q345 steel plate, at a 3 mm gap, the higher instantaneous impact causes the steel plate to bend sufficiently to touch the inner steel plate.

[0062] When a collision actually occurs, the double-layer steel plates come into contact to form a closed loop. This loop is connected to the relay module, and the closed signal is used as a switch input. After receiving the closed signal, the relay module sends a switch output signal, indicating that a collision event has occurred. The relay module is connected to the switch network and transmits the signal to the smart security management and control platform through the TCP / IP protocol. After the platform receives the signal, it triggers an alarm event and links the monitoring equipment. After receiving the collision signal, the smart security management and control platform automatically captures the monitoring screen, obtains the vehicle license plate information, and pops up a prompt on the gate management client. The display screen on the management end will pop up an alarm video to remind on-site personnel to deal with it quickly.

[0063] The gate container truck collision safety island alarm system of the present invention, through the double-layer steel plate structure design, can quickly trigger a closed loop when the container truck actually collides with the safety island, thereby realizing real-time alarm of the collision event and avoiding the false alarm and delay problems existing in relying solely on early warning or monitoring; at the same time, the double-layer steel plate structure is not affected by environmental factors such as light, rain, snow, and dust, and is suitable for stable operation in various complex environments, and eliminates the complexity of a large amount of wiring and sensor configuration in traditional solutions, significantly reducing installation and maintenance costs, and facilitating large-scale deployment.

[0064] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A gate container truck collision safety island alarm system, characterized in that: include: A double-layer steel plate, arranged in the impact-prone area of ​​the safety island, comprises an outer steel plate and an inner steel plate of different thicknesses; there is a gap between the outer steel plate and the inner steel plate; A relay module, one end of which is connected to a closed loop formed by the outer steel plate and the inner steel plate, and the other end of which is connected to a switch network; The smart security control platform receives the signal transmitted by the switch network, triggers the alarm event and links the monitoring equipment; the monitoring equipment is used to capture the monitoring screen and obtain the vehicle license plate information; On the management side, a window will pop up to indicate the vehicle license plate information, and a warning video will pop up on the display screen to remind on-site personnel to handle the situation quickly.

2. The gate container truck collision safety island alarm system according to claim 1 is characterized in that: The outer steel plate and the inner steel plate are both made of Q345 steel plate with a surface area of ​​2 m2.

3. The gate container truck collision safety island alarm system according to claim 1 is characterized in that: The thickness of the outer steel plate is 5 mm, the thickness of the inner steel plate is 10 mm; the gap between the outer steel plate and the inner steel plate is 3 mm.

4. The gate container truck collision safety island alarm system according to claim 1 is characterized in that: The design basis of the double-layer steel plate includes the following steps: Step 1: Calculate the kinetic energy of the truck; Step 2: Calculate the impact force; Step 3: Calculate the stress of the double-layer iron plate; Step 4, determining the stress distribution under the impact force; Step 5: Compare the yield strength with that of Q345 steel plate; Step 6: Simulate instantaneous deflection.

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