Barrier and barrier system

Abstract

The invention relates to a barrier and a barrier system. The barrier includes: a substrate; and the sensitive grid covers the outer surface of at least part of the base material, and the sensitive grid deforms after being stressed to generate resistance change. According to the barrier in the technical scheme, the sensitive grid capable of generating resistance change due to deformation after being stressed is arranged on the outer surface of the base material, and scientific and reasonable parameter setting and an alarm triggering mechanism are combined, so that high-precision monitoring on invasion behaviors such as climbing and shearing is realized, and the problems that an existing barrier is inaccurate in monitoring and easy to interfere are effectively solved; therefore, a perimeter security system with high reliability and stability is constructed.

Description

Technical Field

[0001] This invention relates to the field of fencing technology, and in particular to a barrier and barrier system. Background Technology

[0002] In the field of security, barriers such as fences or barriers are common protective facilities, and their functionality directly affects the safety of an area. Traditional fences mostly rely solely on their physical structure to provide a barrier, failing to monitor and alarm intrusion attempts to climb over or damage the fence in real time, posing significant security risks. Some fences with monitoring capabilities, such as those based on infrared sensors, work by using infrared light obstruction to determine if an object is passing through. However, in practical applications, environmental factors such as falling leaves and small animals easily block infrared light, leading to false alarms and reduced system reliability. Vibration-based fences primarily identify intrusions by sensing fence vibrations. However, vibrations from natural environments such as wind, rain, and vehicle movement are similar to those caused by intrusion, making it difficult for these fences to achieve ideal sensitivity and accuracy, and unable to accurately distinguish between normal environmental vibrations and vibrations caused by intrusion. With the increasing demands for social security, existing barrier monitoring technologies are insufficient to meet the requirements of high-precision, high-reliability security systems. There is an urgent need to develop a barrier technology that can accurately detect intrusion behavior and issue timely alarms, while also possessing strong anti-interference capabilities and stable performance. Summary of the Invention

[0003] Therefore, it is necessary to provide a barrier and barrier system that, by setting a sensitive grid in the barrier that can sense the resistance change caused by force deformation, and combining it with scientific and reasonable parameter settings and alarm triggering mechanisms, can achieve high-precision monitoring of intrusion behaviors such as climbing and shearing, effectively solving the problems of inaccurate monitoring and susceptibility to interference of existing barriers, thereby building a highly reliable and stable perimeter security system.

[0004] A barrier, the barrier comprising: Substrate; and A sensitive grid is located on the substrate. When the sensitive grid is subjected to force, it deforms and causes a change in resistance.

[0005] The barrier of this invention, by setting a sensitive grid on the outer surface of the substrate that can change resistance due to deformation under force, combined with scientific and reasonable parameter settings and alarm triggering mechanism, achieves high-precision monitoring of intrusion behaviors such as climbing and shearing, effectively solving the problems of inaccurate monitoring and susceptibility to interference of existing barriers, thereby building a highly reliable and stable perimeter security system.

[0006] In one embodiment, the barrier is a fence, the fence comprising a mesh panel, the mesh panel comprising: Several first-direction ribs extend along a first direction; Several second-direction ribs extend along the second direction; A plurality of first directional ribs and a plurality of second directional ribs are interleaved and connected; The first directional rib and the second directional rib constitute the substrate, and the sensitive grid is covered on the outer surface of at least a portion of the first directional rib and / or at least a portion of the second directional rib.

[0007] In one embodiment, the barrier is a fence, which includes a plurality of mesh panels and a plurality of posts, wherein the mesh panels are connected between two adjacent posts; The mesh includes: Several first-direction ribs extend along a first direction; Several second-direction ribs extend along the second direction; A plurality of first directional ribs and a plurality of second directional ribs are interleaved and connected; The first directional rib, the second directional rib, and the column constitute the substrate, and the sensitive grid is covered on at least a portion of the outer surface of the first directional rib, at least a portion of the second directional rib, and / or at least a portion of the column.

[0008] In one embodiment, the mesh is formed by resistance welding or weaving of a plurality of first directional ribs and a plurality of second directional ribs; and / or When the barrier is climbed by an external force greater than 50 kg, or when the mesh undergoes shear deformation within a range of 100 mm, the change in resistance of the sensitive grid triggers an alarm.

[0009] In one embodiment, the sensitive gate is a conductor or a semiconductor material; and / or The standard value for the strain resistance measurement of the sensitive grid is 400Ω~600Ω, the lower limit of the resistance value of the sensitive grid is not less than 400Ω, and the insulation resistance between the sensitive grid and the substrate is >100MΩ; and / or The absolute value of the temperature coefficient of resistance of the sensitive gate material is less than or equal to 40 ppm / ℃.

[0010] The sensitive grid is a wire sensitive grid or a foil sensitive grid.

[0011] In one embodiment, the wire-type sensing grid is formed by parallel winding of resistance wires with a diameter of 0.01 mm to 0.15 mm; and / or The foil-type sensing grid uses a metal foil with a thickness of 0.003 mm to 0.01 mm.

[0012] In one embodiment, the sensitive gate material includes one or a mixture of at least two of constantan, new constantan resistive alloy, nickel-chromium alloy, nickel-chromium-aluminum alloy, nickel-chromium-aluminum alloy, iron-nickel-aluminum alloy, platinum and platinum-tungsten alloy.

[0013] In one embodiment, the substrate is a wire, sheet, or tube; and / or The substrate is made of metal. Preferably, the metal material is steel.

[0014] In one embodiment, the barrier further includes an anti-corrosion insulating coating located on the outer surface of the substrate; and / or The barrier also includes a protective surface layer located on the outermost side.

[0015] A barrier system comprising: Any of the above barriers; The monitoring module is used to acquire the resistance change information and determine whether to output alarm information based on a preset threshold and the resistance change information.

[0016] The barrier system of this invention, by setting a sensitive grid on the outer surface of the substrate that can change resistance due to deformation under force, and in conjunction with the monitoring module, combined with scientific and reasonable parameter settings and alarm triggering mechanism, can achieve high-precision monitoring of intrusion behaviors such as climbing and shearing, effectively solving the problems of inaccurate monitoring and susceptibility to interference of existing barriers, thereby building a highly reliable and stable perimeter security system. Attached Figure Description

[0017] Figure 1 This is a plan view of a fence according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the first or second directional reinforcement in a fence according to an embodiment of the present invention; Figure 3 This is a cross-sectional schematic diagram of the first or second directional reinforcement in a fence according to another embodiment of the present invention; Figure 4 This is a plan view of a fence according to another embodiment of the present invention; Figure 5 This is a schematic diagram of the first or second directional rib of the circuit lead after a piece of copper foil tape is wrapped around its end in Embodiment 1 of the present invention. Figure 6 This is a schematic diagram of attaching constantan wire to the outer surface of the first or second directional rib in Embodiment 1 of the present invention. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] One embodiment of the barrier includes a substrate and a sensitive grid. In this invention, the barrier serves to divide an area and can be a fence or barrier, etc.

[0022] In this embodiment, the substrate is the structure that constitutes the barrier and is the basic structure of the entire barrier.

[0023] In this embodiment of the barrier, the sensitive grid is located on the substrate, and its deformation under force generates a change in resistance. "The sensitive grid is located on the substrate" means that the sensitive grid can be disposed on at least a portion of the outer surface of the substrate, or it can be located inside at least a portion of the substrate. "The sensitive grid is disposed on at least a portion of the outer surface of the substrate" means that the sensitive grid can be disposed on the outer surface of the substrate, or it can be embedded in a groove on the outer surface of the substrate.

[0024] The barrier of this embodiment, by setting a sensitive grid on the outer surface of the substrate that can generate resistance changes due to deformation under force, combined with scientific and reasonable parameter settings and alarm triggering mechanism, can achieve high-precision monitoring of intrusion behaviors such as climbing and shearing, effectively solving the problems of inaccurate monitoring and susceptibility to interference of existing barriers, thereby building a highly reliable and stable perimeter security system.

[0025] Based on the aforementioned embodiments, the sensitive gate is made of a conductor or a semiconductor material. When the barrier is subjected to an external force, according to Hooke's Law, the surface of the substrate will elongate or compress. Since the sensitive gate of the conductor or semiconductor material is attached to the surface of the substrate, the length of the sensitive gate of the conductor or semiconductor material will also elongate or compress, causing a change in the resistance of the conductor or semiconductor according to the conductor resistance formula.

[0026] Please see Figure 1 and Figure 2 One embodiment of the barrier is a fence 100, which includes a mesh panel 110. The mesh panel 110 includes a plurality of first-direction ribs 111 and a plurality of second-direction ribs 112, wherein the plurality of first-direction ribs 111 are along a first direction ( Figure 1 Extending in the X direction, several second-direction ribs extend along the second direction ( Figure 1 Extending in the Y direction; a plurality of first directional ribs 111 and a plurality of second directional ribs 112 are interleaved and connected. The first directional ribs 111 and the second directional ribs 112 constitute a substrate 113, and a sensitive grid 120 is disposed on the outer surface of at least a portion of the first directional ribs 111 and / or at least a portion of the second directional ribs 112. The sensitive grid 120 may be disposed only on the outer surface of the first directional ribs 111, only on the outer surface of the second directional ribs 112, or simultaneously on the outer surfaces of both the first directional ribs 111 and the second directional ribs 112.

[0027] The sensitive grid 120 is made of a conductor or semiconductor material, and its resistance changes when it deforms under stress. As the core component for monitoring intrusion behavior, the sensitive grid 120 deforms when the first directional rib 111 or the second directional rib 112 is subjected to external force. Based on the resistance strain effect, the resistance value of the sensitive grid 120 changes accordingly, thereby converting the physical deformation into a detectable electrical signal and realizing the perception of intrusion behavior.

[0028] Based on the aforementioned embodiments, the mesh 110 is formed by resistance welding or weaving of a plurality of first directional ribs 111 and a plurality of second directional ribs 112. The resistance welding process enables the formation of strong welding points between the first directional ribs 111 and the second directional ribs 112, ensuring that the mesh 110 has high strength and stability and effectively resists external pulling, impact and other forces.

[0029] Based on the aforementioned implementation, when the barrier is climbed by an external force greater than 50 kg, or when the mesh 110 undergoes shear deformation within a 100 mm range, the resistance change of the sensitive grid 120 triggers an alarm. The 50 kg external force threshold is set by comprehensively considering the forces that may arise from normal environmental factors and the force required for actual intrusion, effectively filtering out minor deformations caused by natural factors such as wind or small animal contact. The setting of shear deformation of the mesh 110 within a 100 mm range precisely locates the detection range of destructive behavior, ensuring the system accurately identifies malicious acts of vandalism. This accurately distinguishes between normal environmental influences and actual intrusion behavior, reducing false alarm rates.

[0030] Based on the aforementioned implementation, the standard value (i.e., sensitivity coefficient) of the strain resistance measurement of the sensitive grid 120 is 400Ω~600Ω, the lower limit of the resistance value of the sensitive grid 120 is not less than 400Ω, and the insulation resistance between the sensitive grid 120 and the substrate 113 is >100MΩ. These values ​​are measured using a multimeter. The standard value of the strain resistance measurement of the sensitive grid 120 is 400Ω~600Ω. This range ensures that the sensitive grid 120 is in a suitable resistance range under normal operating conditions, facilitating accurate measurement and signal processing by subsequent monitoring circuits. At the same time, the lower limit of the resistance value of the sensitive grid 120 is specified to be not less than 400Ω to ensure its resistance stability under various environmental conditions and prevent signal abnormalities due to excessively low resistance. The insulation resistance between the sensitive grid 120 and the substrate 113 is >100MΩ. Good insulation performance effectively avoids current leakage problems and ensures the accuracy of the resistance change signal generated by the sensitive grid 120.

[0031] Based on the aforementioned embodiments, the sensitive grid 120 is a wire-type sensitive grid or a foil-type sensitive grid. Wherein, Figure 2 The sensitive grid 120 shown is a wire-type sensitive grid. Figure 3 The sensitive grid 120 shown is a foil-type sensitive grid, and the coverage area of ​​the foil-type sensitive grid preferably does not exceed half of the perimeter of the substrate 113. Different types of sensitive grids 120 provide diverse options for practical applications, and users can optimize the configuration according to specific protection requirements and environmental conditions.

[0032] Based on the aforementioned embodiments, the wire-type sensing grid is formed by parallel winding of resistance wires with a diameter of 0.01 mm to 0.15 mm. The finer diameter of the resistance wire allows for higher sensitivity to minute deformations, making it suitable for scenarios requiring high monitoring accuracy. Furthermore, the diameter of the resistance wire can be, but is not limited to, 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, or 0.15 mm.

[0033] Based on the aforementioned embodiments, the foil-type sensing grid uses a metal foil with a thickness of 0.003 mm to 0.01 mm. The large area characteristic of the metal foil allows it to transmit deformation more uniformly under stress, and it also possesses good flexibility and heat dissipation performance, making it suitable for scenarios requiring adaptation to complex environments. Furthermore, the thickness of the metal foil can be, but is not limited to, 0.003 mm, 0.004 mm, 0.005 mm, 0.006 mm, 0.007 mm, 0.008 mm, 0.009 mm, or 0.01 mm.

[0034] Based on the aforementioned implementation method, the absolute value of the temperature coefficient of resistance of the sensitive grid 120 material is less than or equal to 40 ppm / ℃. Controlling this parameter ensures that the resistance value of the sensitive grid 120 remains relatively stable under different temperature conditions, thus guaranteeing the stability of the monitoring system.

[0035] Based on the aforementioned embodiments, the sensitive grid 120 material includes one or a mixture of at least two of the following: constantan (foreign name: constantan wire), new constantan resistance alloy, nickel-chromium alloy, nickel-chromium-aluminum alloy, nickel-chromium-aluminum alloy, iron-nickel-aluminum alloy, platinum and platinum-tungsten alloy. Among them, the new constantan resistance alloy is a copper-iron based isoalloy, possessing the same resistivity, a substantially similar temperature coefficient of resistance, and the same operating temperature as constantan. Compared to constantan resistance alloy, new constantan has the advantage of lower price due to the absence of expensive nickel, but its oxidation resistance is inferior to constantan. It can replace constantan wire resistance alloy in many aspects. These materials all possess good resistance-strain characteristics and stability; for example, constantan has a low temperature coefficient of resistance and a high strain sensitivity coefficient, maintaining stable performance over a wide temperature range; nickel-chromium alloy has good oxidation resistance and corrosion resistance, making it suitable for various harsh environments.

[0036] Based on the aforementioned embodiments, the substrate can be wire, sheet, or tube. This invention does not limit the form of the substrate; wire, sheet, or tube profiles are all suitable for the technical solutions of this invention.

[0037] In addition to the aforementioned embodiments, the substrate is made of metal. A metal substrate provides better support.

[0038] Based on the aforementioned implementation method, the metal material is steel. Steel has good mechanical properties, which can provide a good supporting foundation for the barrier.

[0039] Based on the aforementioned embodiments, the barrier further includes an anti-corrosion and insulating coating, which is located on the outer surface of the substrate 113. Furthermore, the sensitive grid 120 is located outside the anti-corrosion and insulating coating. The main function of the anti-corrosion and insulating coating is to prevent the substrate 113 from being corroded by moisture, acids, alkalis, etc., in the external environment, while also providing good insulation to prevent current interference between the substrate 113 and the sensitive grid 120, ensuring the accuracy of the signal from the sensitive grid 120. Epoxy resin coating or electrostatic powder coating with zinc-rich base powder can be used as the anti-corrosion and insulating coating. Through spraying or impregnation processes, the coating is uniformly applied to the surface of the substrate 113. The coating thickness is precisely controlled according to the actual usage environment to achieve the best anti-corrosion and insulating effect.

[0040] Based on the aforementioned embodiments, the barrier also includes a protective surface layer, which is located on the outermost side. The protective surface layer is made of wear-resistant and weather-resistant materials, such as polyurethane coating, which can physically protect the substrate 113, the anti-corrosion insulation layer, and the sensitive grid 120, preventing the substrate 113, the anti-corrosion insulation layer, and the sensitive grid 120 from being damaged by external forces such as scratches and impacts during daily use, effectively improving the service life and reliability of the barrier.

[0041] It should be noted that the barrier of the present invention can take many forms and is not limited to the fence described in the above embodiments; it may further include several posts.

[0042] Please see Figure 4 In another embodiment of the present invention, the barrier is a fence 200, which includes a plurality of mesh panels 210 and a plurality of posts 220, with the mesh panels 210 connected between two adjacent posts 220. The two ends of the mesh panels 210 can be firmly connected to the posts 220 by bolts, welding, or other suitable fixing methods to form a complete fence structure.

[0043] The mesh 210 includes a plurality of first-direction ribs 211 and a plurality of second-direction ribs 212. The plurality of first-direction ribs 211 are along a first direction (…). Figure 2 Extending in the X direction; several second-direction ribs 212 along the second direction ( Figure 2 Extending in the Y direction; a number of first direction ribs 211 and a number of second direction ribs 212 are interwoven and connected.

[0044] In this embodiment, the first directional rib 211, the second directional rib 212, and the column 220 constitute the substrate 213, and the sensitive grid is covered on the outer surface of at least a portion of the first directional rib 211, at least a portion of the second directional rib 212, and / or at least a portion of the column 220. The sensitive grid 120 may be covered on the outer surface of one, two, or all of the first directional rib 211, the second directional rib 212, and the column 220.

[0045] The sensitive grid in this embodiment is the same as the sensitive grid in the fence 100 of the above embodiment. The sensitive grid is made of a conductor or semiconductor material, and its resistance changes when it deforms under force. As the core component for monitoring intrusion behavior, when the first directional rib 211, the second directional rib 212, or the post 220 is deformed by external force, the sensitive grid will also deform accordingly. Based on the resistance strain effect, the resistance value of the sensitive grid will change accordingly, thereby converting the physical deformation into a detectable electrical signal, realizing the perception of intrusion behavior.

[0046] During the actual installation of the fence 200 in this embodiment, the spacing and height of the posts 220 can be reasonably adjusted according to different terrains and protection requirements to ensure that the fence 200 can provide comprehensive and effective protection for the perimeter. Simultaneously, by connecting a matching monitoring circuit to the fence 200, including a Wheatstone bridge measurement circuit, an amplification circuit, a signal processing circuit, and an alarm device, the resistance change of the sensitive fence can be monitored in real time. The resistance change signal is amplified and processed, and when the signal exceeds a preset threshold, the alarm device is triggered to issue an alarm, achieving timely monitoring and early warning of intrusion behavior.

[0047] Furthermore, the fence 200 of this embodiment is flexible in application. Through the selection of various forms and materials for the sensitive grid, and the flexible combination of the resistance strain gauge mesh 210 and the posts 220, the fence 200 of this embodiment can be applied to different protection scenarios and needs. Whether it is a military restricted area with extremely high protection precision requirements, or an industrial park with strong environmental adaptability requirements, the best protection effect can be achieved by reasonably selecting the form and material of the sensitive grid and adjusting the fence structural parameters, demonstrating broad application prospects.

[0048] The barrier of this invention, by setting a sensitive grid on the outer surface of the substrate that can change resistance due to deformation under force, combined with scientific and reasonable parameter settings and alarm triggering mechanism, achieves high-precision monitoring of intrusion behaviors such as climbing and shearing, effectively solving the problems of inaccurate monitoring and susceptibility to interference of existing barriers, thereby building a highly reliable and stable perimeter security system.

[0049] One embodiment of the barrier system includes: any of the above-described barriers and a monitoring module. The monitoring module is used to acquire resistance change information and determine whether to output alarm information based on a preset threshold and the resistance change information.

[0050] The monitoring module includes a Wheatstone bridge measurement circuit, an amplification circuit, a signal processing circuit, and an audible and visual alarm device. The Wheatstone bridge measurement circuit detects the resistance change signal of the sensitive grid; the amplification circuit amplifies this resistance change signal (the amplification factor is unlimited); the signal processing circuit analyzes and processes the amplified signal and makes a judgment based on a preset threshold; the audible and visual alarm device issues an alarm based on the judgment result of the signal processing circuit.

[0051] When the barrier is subjected to intrusion, resulting in mesh displacement or breakage, the resistance within the sensitive grid changes. The Wheatstone bridge measurement circuit detects this resistance change and transmits it to the amplification circuit for amplification. The amplified signal is then sent to the signal processing circuit for analysis. The signal processing circuit determines the signal based on a preset threshold. If the signal exceeds the threshold, it triggers an audible and visual alarm, and simultaneously transmits the alarm signal to the monitoring center via a wireless communication module, enabling remote alarm functionality.

[0052] The barrier system of this invention, by setting a sensitive grid on the outer surface of the substrate that can change resistance due to deformation under force, and in conjunction with the monitoring module, combined with scientific and reasonable parameter settings and alarm triggering mechanism, can achieve high-precision monitoring of intrusion behaviors such as climbing and shearing, effectively solving the problems of inaccurate monitoring and susceptibility to interference of existing barriers, thereby building a highly reliable and stable perimeter security system.

[0053] Referring to the above embodiments, in order to make the technical solution of the present invention more specific, clear and easy to understand, examples of the technical solution of the present invention are given below. However, it should be noted that the content to be protected by the present invention is not limited to the following embodiments.

[0054] Example 1 This embodiment provides a wire-type sensitive grid resistance strain gauge fence 200, the structure of which is as follows: Figure 4 As shown, the production method is as follows: (1) Fabrication of substrate 213: First, select high-quality steel wire with a diameter of 4mm. According to the required mesh size and grid specifications, use resistance welding equipment to weld several first directional ribs 211 and second directional ribs 212. During the welding process, accurately control parameters such as welding current, welding time, and electrode pressure to ensure that a firm and uniform weld point is formed between the steel wires. For example, the welding current is set to 8A~0A, the welding time is controlled at 0.1s~0.2s, and the electrode pressure is maintained at 0.5MPa~0.8MPa, thereby producing a steel wire mesh substrate 213 with a mesh width of 2.2 meters, a mesh height of 2.5 meters, a spacing of 12.5mm between two adjacent first directional ribs 211, and a spacing of 100mm between two adjacent second directional ribs 212.

[0055] (2) Surface treatment of substrate 213: Electrostatic powder coating with zinc-rich base powder as an anti-corrosion and insulating coating.

[0056] (3) Sensitive grid circuit design: Constantan is selected as the sensitive grid material, and constantan is made into a resistance wire with a diameter of 0.05mm using professional wire drawing equipment. Then, the resistance wire is wound parallel to and tightly covered on the outer surface of the first directional rib 211 using manual or automated winding equipment. During manual winding, a section of copper foil tape, approximately 10mm wide, is first wound around the end of the first directional rib 211 at the circuit lead for welding the lead and the constantan wire, such as... Figure 5 As shown; extend the constantan wire approximately 10mm beyond the cross-section of the first directional rib 211, and press a 3mm wide copper foil tape onto the constantan wire in the center. After leaving a distance of approximately 10mm from the copper foil loop at the end of the first directional rib 211, adhere the constantan wire to the outer surface of the transverse steel wire 111, as shown. Figure 6 As shown; straighten the constantan wire and copper foil tape, wrap them along the first direction rib 211 all the way to the other end of the horizontal line, and press the tape firmly to make it smooth and dense. Set three loops on the large sample mesh, the length of a single loop is 2.2*8+7*0.1=18.3 meters, and the designed resistance of the loop is 30.78*18.3=563.274Ω, to obtain the resistance strain gauge mesh 210.

[0057] (4) Coating treatment: Polyurethane coating is applied to the outermost side of the resistance strain gauge 210 as a protective surface layer using a spraying process.

[0058] (5) Fence 200 Assembly: Connect the two ends of the first directional rib 211 of the fabricated strain gauge mesh 210 to the column 220. Connect a monitoring module to the fence 200. The monitoring module includes a Wheatstone bridge measurement circuit, an amplification circuit with a magnification of 100 times, a microcontroller-based signal processing circuit, and an audible and visual alarm device. When the strain gauge mesh 210 is subjected to an external force greater than 50 kg or the first directional rib 211 within a vertical range of 100 mm is sheared, the resistance of the sensitive grid changes. After the Wheatstone bridge measurement circuit detects the resistance change signal, it transmits it to the amplification circuit for amplification. The amplified signal is then sent to the signal processing circuit for analysis and processing. The signal processing circuit judges according to a preset threshold. If the signal exceeds the threshold, it triggers the audible and visual alarm device to issue an alarm. At the same time, the alarm signal can be transmitted to the monitoring center through the wireless communication module to realize the remote alarm function.

[0059] Example 2 This embodiment provides a foil-type sensitive grid resistance strain gauge fence, the manufacturing method of which is as follows: (1) Substrate fabrication: First, select high-quality steel wire with a diameter of 4mm. According to the required mesh size and grid specifications, use resistance welding equipment to weld several first and second directional ribs. During the welding process, accurately control parameters such as welding current, welding time, and electrode pressure to ensure that a strong and uniform weld point is formed between the steel wires. For example, the welding current is set to 8A~0A, the welding time is controlled at 0.1s~0.2s, and the electrode pressure is maintained at 0.5MPa~0.8MPa, thereby producing a steel wire mesh substrate with a mesh width of 2.2 meters, a mesh height of 2.5 meters, a first directional rib spacing of 12.5mm, and a second directional rib spacing of 100mm.

[0060] (2) Substrate surface treatment: Electrostatic powder coating with zinc-rich base powder as an anti-corrosion and insulating coating.

[0061] (3) Sensitive gate setup: A nickel-chromium alloy metal foil with a thickness of 0.005 mm is selected. First, according to the shape and size of the first directional rib, the metal foil is processed into the required shape through etching, so that it can be tightly attached to the outer surface of the first directional rib. During the etching process, the concentration, temperature and etching time of the etching solution are precisely controlled to ensure the shape accuracy and dimensional accuracy of the metal foil. Then, a special adhesive is used to attach the processed metal foil to the first directional rib. During the attachment process, it is ensured that there are no air bubbles or gaps between the metal foil and the first directional rib to ensure good conductivity and deformation transfer effect.

[0062] (4) Coating treatment: Polyurethane coating is applied to the outermost side of the resistance strain gauge as a protective surface layer using a spraying process.

[0063] (5) Fence Assembly: Connect the two ends of the first rib of the fabricated resistance strain gauge to the posts. Connect the monitoring module to the fence. The monitoring module includes a Wheatstone bridge measurement circuit, an amplification circuit with a magnification of 100 times, a microcontroller-based signal processing circuit, and an audible and visual alarm device. When the resistance strain gauge is subjected to an external force greater than 50 kg or the first rib within a vertical range of 100 mm is sheared, the resistance of the sensitive grid changes. After the Wheatstone bridge measurement circuit detects the resistance change signal, it transmits it to the amplification circuit for amplification. The amplified signal is then sent to the signal processing circuit for analysis and processing. The signal processing circuit judges according to a preset threshold. If the signal exceeds the threshold, it triggers the audible and visual alarm device to issue an alarm. At the same time, the alarm signal can be transmitted to the monitoring center through the wireless communication module to realize the remote alarm function.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A barrier, characterized in that, The barrier includes: Substrate; and A sensitive grid is located on the substrate. When the sensitive grid is subjected to force, it deforms and causes a change in resistance.

2. The barrier according to claim 1, characterized in that, The barrier is a fence, the fence includes a mesh panel, and the mesh panel includes: Several first-direction ribs extend along a first direction; Several second-direction ribs extend along the second direction; A plurality of first directional ribs and a plurality of second directional ribs are interleaved and connected; The first directional rib and the second directional rib constitute the substrate, and the sensitive grid is covered on the outer surface of at least a portion of the first directional rib and / or at least a portion of the second directional rib.

3. The barrier according to claim 1, characterized in that, The barrier is a fence, which includes several mesh panels and several posts, with the mesh panels connected between two adjacent posts; The mesh includes: Several first-direction ribs extend along a first direction; Several second-direction ribs extend along the second direction; A plurality of first directional ribs and a plurality of second directional ribs are interleaved and connected; The first directional rib, the second directional rib, and the column constitute the substrate, and the sensitive grid is covered on at least a portion of the outer surface of the first directional rib, at least a portion of the second directional rib, and / or at least a portion of the column.

4. The barrier according to claim 2 or 3, characterized in that, The mesh is formed by resistance welding or weaving of a plurality of first directional ribs and a plurality of second directional ribs; and / or When the barrier is climbed by an external force greater than 50 kg, or when the mesh undergoes shear deformation within a range of 100 mm, the change in resistance of the sensitive grid triggers an alarm.

5. The barrier according to claim 1, characterized in that, The sensitive gate is a conductor or semiconductor material; and / or The standard value for the strain resistance measurement of the sensitive grid is 400Ω~600Ω, the lower limit of the resistance value of the sensitive grid is not less than 400Ω, and the insulation resistance between the sensitive grid and the substrate is >100MΩ; and / or The absolute value of the temperature coefficient of resistance of the sensitive gate material is less than or equal to 40 ppm / ℃. The sensitive grid is a wire sensitive grid or a foil sensitive grid.

6. The barrier according to claim 5, characterized in that, The wire-type sensing grid is formed by parallel winding of resistance wires with a diameter of 0.01 mm to 0.15 mm; and / or The foil-type sensing grid uses a metal foil with a thickness of 0.003 mm to 0.01 mm.

7. The barrier according to claim 1 or 5, characterized in that, The sensitive gate material includes one or a mixture of at least two of the following: constantan, neoconstantan resistance alloy, nickel-chromium alloy, nickel-chromium-aluminum alloy, nickel-chromium-aluminum alloy, iron-nickel-aluminum alloy, platinum and platinum-tungsten alloy.

8. The barrier according to claim 1, characterized in that, The substrate is a wire, sheet, or tube; and / or The substrate is made of metal. Preferably, the metal material is steel.

9. The barrier according to claim 1, characterized in that, The barrier further includes an anti-corrosion and insulating coating, which is located on the outer surface of the substrate; and / or The barrier also includes a protective surface layer located on the outermost side.

10. A barrier system, characterized in that, include: The barrier according to any one of claims 1 to 9; as well as The monitoring module is used to acquire the resistance change information and determine whether to output alarm information based on a preset threshold and the resistance change information.

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