A range safety defense system
By laying vibration sensing optical fibers in security areas and combining them with filters and deep learning technology, the problems of poor accuracy, difficulty in positioning, and high false alarm rate of existing intrusion systems have been solved, achieving efficient and accurate intrusion detection and a low-cost security solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN WELLREACH AUTOMATION
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-07
AI Technical Summary
Existing intrusion systems suffer from poor accuracy, difficulty in location, high false alarm rate, and high cost. In particular, in high-security scenarios such as nuclear power plant security, existing technologies are not flexible enough to deploy and are costly.
Vibration sensing optical fibers are laid along the security area, and combined with filters and deep learning technology, the vibration signals are accurately collected and processed, reducing the false alarm rate. The alarm components are controlled by an optical fiber industrial control computer, providing efficient and accurate intrusion detection.
It enables timely and accurate detection of intrusion behavior, reduces false alarm rate, simplifies deployment process, reduces costs, and adapts to various monitoring scenarios.
Smart Images
Figure CN224472069U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of security technology, and in particular to a range security defense system. Background Technology
[0002] The prototype of the range intrusion system integrates Φ-OTDR technology, artificial intelligence technology, signal processing technology, and video surveillance technology to more efficiently detect intrusion behavior. It primarily addresses existing problems:
[0003] Poor accuracy and difficulty in positioning: Most installation methods set up one protection zone within a range of 40-100m. When the alarm is triggered, the entire protection zone alarms at the same time, making it impossible to accurately determine the location and exact position of the intrusion.
[0004] High false alarm rate: Alarms are easily affected by the environment and weather, resulting in a high false alarm rate.
[0005] Expensive: Imported products have high procurement costs, and subsequent after-sales technical service costs are also very high. Summary of the Invention
[0006] In view of this, the technical problem to be solved by this application is to provide a range security defense system to solve the above-mentioned problems existing in the prior art.
[0007] To address the aforementioned problems, this application provides a range security defense system, comprising: a range limiting component, which includes a protective body and a vibration sensing optical fiber disposed along the range of the security area, the vibration sensing optical fiber being arranged on the protective body; a detection component, which includes a vibration sensing optical fiber detection host and a fiber optic industrial control computer connected by signals; the vibration sensing optical fiber detection host is connected to the vibration sensing optical fiber to receive vibration signals detected by the vibration sensing optical fiber and transmit the received vibration signals to the fiber optic industrial control computer; an alarm component, which issues an alarm signal under the control of the fiber optic industrial control computer; and a switch for connecting at least a portion of the fiber optic industrial control computer and the alarm component.
[0008] The security defense system implemented in this application is simple to deploy because the vibration sensing fiber optic cable is laid along the required monitoring area. Cameras and audible and visual alarms can be deployed along the vibration fiber optic cable as needed, or existing equipment can be used. The overall deployment architecture can meet the needs of long-distance, single-area, or multi-area monitoring scenarios. In addition to achieving security, it can also reduce the cost of manual inspections, indirectly generating economic benefits. The vibration signal acquisition is highly sensitive, making it convenient to deploy a more robust security protection system over a larger area. The vibration sensing fiber optic cable's sensitive signal acquisition, combined with a filter for signal processing and extraction, enables the system to both promptly detect intrusions and avoid false alarms, achieving high efficiency and accuracy. Attached Figure Description
[0009] Figure 1The diagram shown is a schematic representation of a range security defense system architecture provided in one embodiment of this application.
[0010] Figure 2 for Figure 1 A partial schematic diagram of the range security defense system of the embodiment shown. Detailed Implementation
[0011] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer and more understandable, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application.
[0012] Different scenarios have different requirements for area security. For some scenarios with very high area security levels, such as nuclear power plant area security, existing technologies used in general security are insufficient, or their deployment is not flexible enough and the cost is high. Therefore, this invention proposes the following technical means.
[0013] This application provides a range security defense system, comprising: a range limiting component, which includes a protective body and a vibration sensing optical fiber disposed along the range of the security area, the vibration sensing optical fiber being arranged on the protective body; a detection component, which includes a vibration sensing optical fiber detection host and a fiber optic industrial control computer connected by signals; the vibration sensing optical fiber detection host is connected to the vibration sensing optical fiber to receive vibration signals detected by the vibration sensing optical fiber and transmit the received vibration signals to the fiber optic industrial control computer; an alarm component, which issues an alarm signal under the control of the fiber optic industrial control computer; and a switch for connecting at least a portion of the fiber optic industrial control computer and the alarm component.
[0014] In one embodiment, the vibration sensing fiber optic detection host also includes a filter to filter and extract the vibration signal detected by the vibration sensing fiber optic to extract signal feature indicators characterizing the intrusion.
[0015] In one embodiment, the vibration sensing fiber optic detection host is also equipped with a gradient threshold to adapt to the accurate extraction of vibration signals under abnormal weather conditions.
[0016] In one embodiment, the range limiting component also includes a gate, with the vibration sensing fiber of the gate range laid 50cm below ground.
[0017] In one embodiment, the vibration sensing fiber is arranged on the protective body in one or more ways, such as a wavy line, a U-shaped bend, or a loop.
[0018] In one embodiment, multiple maintenance rings are also spaced apart on the vibration sensing fiber.
[0019] In one embodiment, the vibration sensing fiber installed in the security area is a continuous fiber.
[0020] In one embodiment, the vibration sensing optical fiber laid underground is wrapped with a PVC sheath.
[0021] In one embodiment, the protective body includes any one or more of a fence, wire mesh, or wall.
[0022] In one embodiment, the alarm component includes multiple cameras and multiple audible and visual alarms.
[0023] The specific implementation process and technical effects of the embodiments of this application will be described in detail below with reference to the accompanying drawings:
[0024] like Figure 1 The illustrated embodiment of the range protection system includes: a fence and a vibration-sensing optical fiber mounted on the fence, a vibration-sensing optical fiber detection host and a fiber optic industrial control computer, a switch, and an alarm component. The vibration-sensing optical fiber is used to detect changes in motion, vibration, and pressure; therefore, during its installation, the vibration-sensing optical fiber must be installed in locations where motion, vibration, and pressure can be detected. Figure 1The vibration-sensing fiber optic cables on the central fence are arranged in a U-shaped bend along the main body of the fence, allowing them to cover most of the fence area. This ensures that the fiber optic cables can promptly detect vibration signals whenever the fence is climbed over, struck, or damaged at any point. Fences or enclosures with good vibration sensing can respond using vibration sensors, thus allowing for a lower fiber optic cable density. For enclosures with poor vibration sensing, the fiber optic cables should be installed in locations most easily touched and where vibration is most likely to be detected, taking into account ergonomic intrusion behavior simulations, and their density can be increased accordingly. In areas with low vibration, such as the central pillars, where security is easily overlooked, adding vibration-sensing fiber optic cables to the pillar body or top can be considered. The fence must ensure that the materials, specifications, and construction are identical within the same defense zone. The fence should have the same vibration-sensing tightness, with no obvious looseness or swaying. There should be no man-made or naturally occurring branches, rocks, buildings, or other objects on either side of the fence that could facilitate climbing by intruders. For protected areas longer than 500 meters, 5 meters of fiber optic cable should be reserved every 100 meters for fiber breakage / fusion (the reserved cable coil diameter should be ≥30cm). The vibration sensing fiber optic detection host monitors in meters, thus improving monitoring and positioning capabilities compared to traditional area monitoring methods. In actual deployment, only one fiber optic cable is needed to monitor the entire security area. The vibration sensing fiber optic detection host connects to the vibration sensing fiber optic cable to receive and process the vibration signals detected by the fiber optic cable; the vibration sensing fiber optic detection host and the fiber optic industrial control computer are connected via a signal cable, such as a USB to RS-232 cable. The fiber optic industrial control computer connects to the switch and alarm components to control the alarm components to issue alarm signals after triggering according to the built-in alarm conditions. Both the vibration sensing fiber optic detection host and the fiber optic industrial control computer require external power supplies and can also be connected to external monitors, mice, and keyboards. The alarm components include multiple cameras and multiple audible and visual alarms. The alarm conditions set within the fiber optic industrial control computer react to the following activities: intruders climbing over fences; intruders cutting fences; and no alarm should be triggered in winds not exceeding 48 km / h. Vibrating fiber optic cables can be directly installed and deployed within security areas such as wire mesh and walls. Using a ring network deployment mode maximizes the system's ability to maintain normal security even after damage, thus improving system stability. A single fiber optic cable can provide physical protection for the entire security area, and if the cable is broken, it can be easily re-spun. The installation method is simple and convenient, significantly reducing maintenance costs when maintaining the new generation of vibrating fiber optic detection systems.
[0025] Vibration fiber optic detection systems are typically installed outdoors, making their deployment environment harsh and highly susceptible to weather conditions, resulting in a significant false alarm rate. This system addresses this issue by incorporating a filter into the vibration fiber optic detection host to extract intrusion-characterizing signal features from the raw vibration fiber optic signal, thereby reducing the false alarm rate. The filter uses a vibration signal obtained without intrusion as the base signal for high-pass filtering, processing background noise in different environments to obtain the original vibration fiber's spectrum. Spectral analysis is then performed on the high-frequency sampled raw vibration signal. Based on the spectral analysis results, filter parameters are adjusted for high-pass filtering. Considering computational efficiency and the effectiveness of feature extraction, wavelet packet decomposition is performed on the filtered vibration signal. Wavelet energy is calculated from the wavelet coefficients after wavelet packet decomposition. The intrusion type is determined based on the pre-defined correlation between wavelet packet energy level thresholds and intrusion event types. Furthermore, by configuring gradient thresholds, interference from strong winds is shielded from the vibration fiber optic detection system, further optimizing the false alarm rate.
[0026] With the rapid development of big data and artificial intelligence, the promotion and application of intelligent products is the mainstream trend. Therefore, during the prototype development process, deep learning technology was pre-implemented into the system. By extracting signal feature indicators that can characterize intrusions, and further combining them with deep learning technology, intrusion type pattern recognition can be ultimately achieved.
[0027] like Figure 2 The partial layout diagram shown includes a fence 30 and a gate 20. The vibration sensing fiber optic cable 10 within the gate 20 area is buried underground at a depth ≥500mm. The vibration sensing fiber optic cable 10 is fixed to the fence 30 using UV-resistant stainless steel cable ties, with one cable tie every 30cm. The vibration sensing fiber optic cable must be fixed horizontally, with the cable ties tightened appropriately to secure the fiber optic cable without damaging it. The vibration sensing fibers of the two zones must intersect at a point with a width of at least 1.5 meters to ensure complete coverage. The fiber optic cable runs along the fence direction, 70cm from the bottom edge of the fence. Inspection rings 11 are installed at appropriate intervals and locations, with a length twice the normal length. The fiber optic splice box, serving as the end of the fiber optic cable, must be installed horizontally and fixed to the fence.
[0028] The fiber optic cable from the control cabinet (which houses the vibration sensing fiber optic detection host and fiber optic industrial control computer) to the fence must also be encased in PVC tubing and buried underground to a depth of ≥50cm. The control cabinet, vibration sensing fiber optic cable, and fiber optic splice boxes should all be deployed within the protected area (within the safe zone). The control cabinet should be located in the control room; if deployed on-site, it should be at least 5 meters away from the fence. Furthermore, the fence may be discontinuous. To ensure measurement continuity and effectively mitigate the impact of fence interruptions, the vibration sensing fiber optic cable should be buried at the interruption points, such as the gate shown in the diagram, to a depth of ≥500mm. The buried fiber optic cable must be protected with a PVC sheath.
[0029] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but this does not limit the scope of the invention. Those skilled in the art can implement the present invention in various modifications without departing from its scope and spirit; for example, a feature of one embodiment can be used in another embodiment to obtain yet another embodiment. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention should be within the scope of the present invention.
Claims
1. A range security defense system, comprising: A range-limiting component includes a protective body disposed along the range of the security area and a vibration-sensing optical fiber, the vibration-sensing optical fiber being arranged on the protective body; The detection component includes a vibration sensing fiber optic detection host and a fiber optic industrial control computer connected by a signal connection; the vibration sensing fiber optic detection host is connected to the vibration sensing fiber to receive the vibration signal detected by the vibration sensing fiber and transmit the received vibration signal to the fiber optic industrial control computer. The alarm component, under the control of a fiber optic industrial control computer, emits alarm signals; and A switch for connecting the fiber optic industrial control computer to at least a portion of the alarm component.
2. The range security defense system according to claim 1, characterized in that: The vibration sensing fiber optic detection host also includes a filter to filter and extract the vibration signal detected by the vibration sensing fiber optic cable, so as to extract signal feature indicators that characterize the intrusion.
3. The range security defense system according to claim 1, characterized in that: The vibration sensing fiber optic detection host is also equipped with a gradient threshold to ensure accurate extraction of vibration signals under abnormal weather conditions.
4. The range security defense system according to claim 1, characterized in that: The range-limiting component also includes a gate, and the vibration-sensing optical fiber of the gate range is laid 50cm below ground.
5. The range security defense system according to claim 1, characterized in that: The vibration sensing optical fiber is arranged on the protective body in one or more ways, such as a wavy line, a U-shaped bend, or a loop.
6. The range security defense system according to claim 1, characterized in that: Multiple inspection rings are also spaced apart on the vibration sensing fiber.
7. The range security defense system according to claim 1, characterized in that: The vibration sensing fiber installed in the security area is a continuous fiber.
8. The range security defense system according to claim 4, characterized in that: The vibration sensing optical fiber, which is laid underground, is wrapped with a PVC sheath.
9. The range security defense system according to claim 1, characterized in that: The protective structure includes any one or more of fences, wire mesh, and walls.
10. The range security defense system according to claim 1, characterized in that: The alarm components include multiple cameras and multiple audible and visual alarms.