Isolated gate intrusion detection intelligent sensor and intrusion detection system

Abstract

The utility model relates to the technical field of isolation gate intrusion detection, in particular to an isolation gate intrusion detection intelligent sensor, an intrusion detection system and an intelligent sensor, which are characterized by comprising an upper body and a lower body, the upper body and the lower body are detachably connected, and a closed space is formed when the upper body and the lower body are connected. A control unit, a communication module, a detection signal generating / receiving module, a human body existence detection module, a positioning module and a storage battery are arranged on the lower body; the control unit is respectively connected with the communication module, the detection signal generating / receiving module, the positioning module and the storage battery; the communication module is in signal connection with the upper computer; the human body existence detection module is connected with the detection signal generating / receiving module; the storage battery is respectively connected with the control unit, the communication module, the detection signal generating / receiving module and the positioning module; a plurality of detection assemblies are fixedly arranged on the lower body, the detection assemblies are connected with the detection signal generating / receiving module, the detection port group is further detachably connected with a to-be-detected cable, and an antenna is arranged on the lower body.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of isolation fence intrusion detection, and particularly relates to an isolation fence intrusion detection intelligent sensor and an intrusion detection system. BACKGROUND

[0002] The isolation fence is also called a guardrail net or a fence, and is a facility for isolation, protection and division of regions, and is widely applied in the fields of transportation, security, industry and agriculture. The core function is to limit the random passing of personnel, animals or vehicles through a physical barrier, and to provide the functions of safety protection, division of regions and blocking of vision.

[0003] A few isolation fences are provided with video monitoring equipment such as cameras, but this monitoring method is expensive, and the camera monitoring can be realized only when the camera is used based on continuous power supply. The existing intrusion detection equipment is not suitable for monitoring and intrusion detection of long-distance isolation fences due to the long length of the monitored isolation fences, the long transmission distance of the intrusion signals and the lack of city power supply for power supply in the wild.

[0004] The existing isolation fences along the highway often have the situation that personnel cross the isolation fences or break into the highway, resulting in personal and road property losses, because of the lack of effective and easy-to-deploy intrusion detection and / or alarm of human approach. SUMMARY

[0005] In view of the above problems of the prior art, the utility model provides an isolation fence intrusion detection intelligent sensor and an intrusion detection system to solve the above technical problems.

[0006] In the first aspect, the utility model provides an isolation fence intrusion detection intelligent sensor, characterized by comprising an upper body and a lower body, the upper body and the lower body are detachably connected, the upper body and the lower body form a closed space when being connected, a control unit, a communication module, a detection signal generation / reception module, a human body existence detection module, a positioning module and a storage battery are fixedly arranged on the lower body and located in the closed space when the upper body and the lower body are connected;

[0007] The control unit is connected with the communication module, the detection signal generation / reception module, the positioning module and the storage battery respectively;

[0008] The communication module is connected with an antenna arranged on the lower body;

[0009] The human body existence detection module is connected with the detection signal generation / reception module;

[0010] The battery is connected to the control unit, the communication module, the detection signal generating / receiving module, and the positioning module, respectively.

[0011] Multiple detection components are fixedly installed around the lower body. Each detection component is connected to the detection signal generating / receiving module, and each detection component is detachably connected to a cable to be tested.

[0012] In an optional embodiment, the detection component includes a first detection port group and a second detection port group fixedly disposed on the periphery of the lower body. The first detection port group and the second detection port group are respectively connected to the detection signal generating / receiving module, and both ends of the cable to be tested are respectively connected to the first detection port group and the second detection port group.

[0013] In an optional implementation, the first detection port group includes detection port TA and detection port RA, the second detection port group includes detection port TB and detection port RB, and the cable to be tested includes two conductors, one conductor having its two ends connected to detection port TA and detection port RB respectively, and the other conductor having its two ends connected to detection port TB and detection port RA respectively.

[0014] In an optional embodiment, a sealing gasket is provided between the detection port group and the lower body to prevent water from passing through the joint between the detection port group and the lower body.

[0015] In an optional embodiment, a sealing gasket for sealing and waterproofing is provided between the lower body and the upper body, and the upper body and the lower body are connected by bolts.

[0016] In one optional embodiment, the antenna includes a built-in antenna and / or an external antenna connected to the communication module. The built-in antenna is fixedly connected to the lower body and is located within an enclosed space when the upper body and the lower body are connected. The external antenna is fixedly connected to the lower body and is located outside the enclosed space.

[0017] In an optional implementation, a grounding electrode is also included, which is connected to the earth, or connected to the earth after being connected to an isolation fence, or connected to an isolation fence to form a separate ground.

[0018] Secondly, this utility model provides an isolation barrier intrusion detection system, including an ECU module and the aforementioned smart sensor, wherein...

[0019] Both ends of each cable to be tested are connected to the same smart sensor, and multiple smart sensors are simultaneously connected to the ECU module through the communication module.

[0020] Alternatively, each cable to be tested can be connected to two adjacent smart sensors at both ends, and multiple smart sensors can be connected to the ECU module simultaneously through the communication module;

[0021] Alternatively, one cable to be tested can be connected to the first and last smart sensors at both ends, and other cables to be tested can be connected to two adjacent smart sensors at both ends. Multiple smart sensors can be connected to the ECU module simultaneously through the communication module.

[0022] The beneficial effects of this utility model are as follows: This utility model provides a smart sensor and intrusion detection system for fence intrusion detection. The smart sensor for fence intrusion detection adopts a structural design in which the upper and lower parts can be detachably connected to form a closed space. It integrates multiple functional modules such as a control unit, a communication module, and a detection signal generation / receiving module. The detection components can be flexibly connected to the cable to be detected to locate the continuity and / or break point of the cable, thereby determining the location of the damaged fence. The antenna ensures signal transmission. This utility model not only realizes the intrusion detection and location of the fence, but also can promptly feed the information back to the host computer through the communication module. Moreover, the modular and detachable design facilitates installation, maintenance and upgrades, effectively improving the intelligence level and reliability of fence intrusion detection.

[0023] Furthermore, the design principle of this utility model is reliable, the structure is simple, and it has a very wide range of application prospects. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a smart sensor according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic block diagram showing the connection of a detection component of a smart sensor according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram illustrating one of the group connection methods between multiple smart sensors and an ECU according to an embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram illustrating a second method of connecting multiple smart sensors to an ECU within a group, according to one embodiment of the present invention.

[0029] Figure 5This is a schematic diagram illustrating the connection method within a group of multiple smart sensors and an ECU according to one embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram illustrating the inter-group connection method of multiple smart sensors and multiple ECUs according to one embodiment of the present invention.

[0031] Explanation of key figure labels:

[0032] 1. Lower body; 2. Upper body; 3. First detection port group; 4. Second detection port group; 5. Sealing gasket; 6. Fixing nut; 7. Sealing washer. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0034] 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 is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0035] Since the two-core cable is wrapped around the barrier, it will be damaged along with the barrier. Therefore, when the two-core cable is damaged, it can be known that the barrier is damaged. Thus, based on continuity detection and cable length detection, it can be determined whether the barrier is damaged and where the damage is located.

[0036] Reference Figure 1 and Figure 2 The smart intrusion detection sensor (IDS) for the isolation fence is installed on the isolation fence. The smart sensor includes an upper body 2 and a lower body 1, which are detachably connected. The upper body 2 and the lower body 1 can be detachably connected by bolts. A sealing gasket 7 for sealing and waterproofing is provided between the lower body 1 and the upper body 2. When the upper body 2 and the lower body 1 are connected, they form a closed space. (The upper body 2 and the lower body 1 can also be connected by a snap-fit ​​structure or by injection, etc., any structure that can ensure the sealing of the closed space is acceptable.) The lower body 1 is provided with a control unit, a communication module, a detection signal generation / receiving module, a human presence detection module, a positioning module, and a battery, which are located within the closed space when the upper body 2 and the lower body 1 are connected.

[0037] The control unit is connected to the communication module, the detection signal generation / receiving module, the positioning module, and the battery, respectively. The functions of the control unit are: to control the detection signal generation / receiving module to generate detection signals; to process the information returned by the detection signal generation / receiving module, calculate and determine whether the cable under test is damaged (i.e., whether the parameter change of the cable under test is greater than a preset threshold); to control the operation of the communication module; to control the operation of the positioning module; and to control the operation of the human presence detection module.

[0038] Multiple detection components (in this embodiment) are fixedly installed around the lower body. Figure 1 Only two detection components are shown in the diagram. In actual use, only one detection component can be set, or more detection components can be set. All detection components are connected to the detection signal generating / receiving module, and each detection component is detachably connected to a cable to be tested.

[0039] Each detection component includes a first detection port group 3 (i.e., detection port TA / RA in the figure) and a second detection port group 4 (i.e., detection port TB / RB in the figure) that are fixedly disposed on the circumference of the lower body. Figure 1 The example only shows the case with two detection components. Each detection component has a first detection port group 3 and a second detection port group 4 as a pair to detect one cable to be tested. The first detection port group 3 and the second detection port group 4 are respectively connected to the detection signal generating / receiving module. The two ends of the cable to be tested are respectively connected to the first detection port group 3 and the second detection port group 4 (in this embodiment, the detection port group uses a BNC interface and is connected to the lower body 1 through a fixing nut 6, but other two-core cable connection methods can also be used).

[0040] The function of the detection signal generation / receiving module is to generate the required detection signal according to the instructions of the control unit, output the detection signal to the first detection port group 3 and receive the return signal from the second detection port group 4, and output the detection signal to the second detection port group 4 and receive the return signal from the first detection port group 3.

[0041] The first detection port group 3 and the second detection port group 4 are respectively fixedly arranged on the periphery of the lower body 1. A sealing gasket 5 is provided between the first detection port group 3 and the second detection port group 4 and the lower body 1 to prevent water from passing through the joint between the detection port group and the lower body 1.

[0042] Reference Figure 2The first detection port group 3 includes detection port TA and detection port RA, and the second detection port group 4 includes detection port TB and detection port RB. The cable to be tested includes, but is not limited to, coaxial cable, twisted pair, or two-core parallel wire, all of which consist of two conductors. If a break occurs somewhere in the middle of the cable, the conductors will not be continuous. The cable to be tested includes two conductors; the two ends of one conductor are connected to detection port TA and detection port RB respectively, and the two ends of the other conductor are connected to detection port TB and detection port RA respectively. Figure 2 The diagram only shows the circuit for testing a single cable.

[0043] The communication module is connected to the host computer via signal. The communication methods of the communication module include, but are not limited to, 4G, 5G, LoRa, NB-IoT, Wifi, Zigbee, and StarFlash communication. An antenna connected to the communication module is provided on the lower body 1.

[0044] The positioning module includes GPS (or other positioning methods such as Beidou positioning and WiFi positioning). When a human body is detected approaching or the isolation fence is broken, the control unit sends the GPS positioning information to the host computer via the communication module (in this embodiment, the edge computing unit ECU is used).

[0045] The human presence detection module is connected to the detection signal generation / receiving module. The human presence detection module is equipped with a human presence sensing radar or an infrared pyroelectric human presence sensor. The human presence detection module is connected to the battery and the control unit respectively through the detection signal generation / receiving module.

[0046] The battery is connected to the control unit, the communication module, the detection signal generation / receiving module, and the positioning module, respectively, providing power to the entire smart sensor. The detection signal generation / receiving module draws power from the battery and, under the control of the control unit, generates the detection signal required by the detection port. The detection signal generation / receiving module outputs the detection signal under the control of the control unit. After receiving the returned signal, the module sends it to the control unit. The frequency and duty cycle of the output detection signal pulse are adjustable, and the frequency and amplitude of the output detection pulse can be set according to the length of the cable being tested. In this embodiment, a high-frequency pulse signal is used for detection, so the IDS is not working most of the time, consuming very little power, and the battery can potentially last a long time, for example, 2-3 years or longer.

[0047] The principle of breakpoint detection for cables under test is as follows: The cable is fixed to an isolation barrier. When the barrier is damaged, the cable is also damaged, resulting in a change in cable length, which can be measured. Cable length is measured by injecting a detection signal into one end of the cable. If the other end of the cable is open-circuited or damaged, a reflection occurs at the breakpoint. There is a time difference between the reflected signal and the incident signal. Since the signal transmission speed in a specific cable can be considered constant, this time difference can be used to calculate the original cable length (length before damage) or the length between the detection port and the breakpoint (length after damage). Therefore, when locating the breakpoint of the cable under test, detection signals are injected into the first port group 3 and the second port group 4 respectively. The breakpoint is located based on the return signals from the second port group 4 and the first port group 3. The signal indicating the change in cable length is transmitted to the ECU module through the communication module.

[0048] Since the break point must be either not in the middle of the cable or biased towards the detection ports TA / RA or TB / RB, by selecting appropriate cables and cable lengths so that the length from the cable's midpoint to the detection ports TA / RA or TB / RB is greater than the detection dead zone length, and by injecting detection signals into both detection ports TA / RA (i.e., the first port group 3) and TB / RB (i.e., the second port group 4), the location of the break point (i.e., the point of failure of the isolation barrier) can always be detected. For example, if the conductor break point in the cable is very close to the detection port TA, the time difference between the reflected wave and the incident wave is very small, making it impossible or inaccurate to measure this time difference, and therefore the break point location cannot be detected. However, since in this case the break point must be far from the detection port RB, this device can accurately detect the length from the detection port RB to the break point, thus accurately locating the break point.

[0049] Due to limitations in measurement accuracy, when the cable length is less than a certain value (e.g., 1000cm), changes in cable length cannot be detected or result in large errors, i.e., there is a cable length detection blind zone. Therefore, this smart sensor avoids the detection blind zone and reduces measurement errors through dual-end detection.

[0050] The antenna includes a built-in antenna and / or an external antenna connected to the communication module. The built-in antenna is fixedly connected to the lower body 1 and is located within an enclosed space when the upper body 2 and the lower body 1 are connected. The external antenna is fixedly connected to the lower body 1 and is located outside the enclosed space. For plastic housings, only the built-in antenna can be used for communication between the communication module and the outside world. However, if the built-in antenna has poor communication performance affecting the communication distance, or if the communication signal is shielded by the use of metal materials in the housing, an external antenna can be used.

[0051] The sensor's grounding electrode is connected to the earth, or connected to an isolation fence and then connected to the earth, or connected to an isolation fence and then forming a separate ground through the isolation fence.

[0052] The working principle of smart sensors is as follows:

[0053] 1. To detect whether there is a break in the cable under test, the control unit generates a detection signal and outputs the detection signal to the detection port TA. It receives a return signal from the detection port RB and outputs the detection signal to the detection port TB. It receives a return signal from the detection port RA. If the cable is damaged at some point in the middle, the communication between the detection ports will be interrupted and no return signal will be received. Therefore, it can be determined that there is a break in the cable.

[0054] 2. When a cable break exists, the break point is located. A detection signal can be injected into each detection port. A detection signal is injected into detection port TA, making detection port RB open-circuit. The distance from detection port TA to the signal reflection point can be measured based on the time difference between the incident and reflected signals at detection port TA. In the absence of a break in the cable, the incident signal will reflect at the normal end of the cable (detection port RB). However, with a break in the cable, the incident signal will reflect at the break point. Therefore, the length from detection port TA to the cable break point can be calculated based on the time difference between the incident and reflected signals at detection port TA. Similarly, a detection signal is injected into detection port RB, making detection port TA open-circuit. The distance from detection port RB to the signal reflection point (break point) can be measured based on the time difference between the incident and reflected signals at detection port RB. Using the same principle, the cable distances from detection port RA to the break point and from detection port TB to the break point can be detected.

[0055] 3. The human presence detection module detects in real time whether someone is approaching this smart sensor. Since this smart sensor is installed on the fence, it can detect whether someone is approaching the fence, and thus issue an early warning when someone approaches the fence.

[0056] During the use of smart sensors, the three working modes mentioned above can work individually, any two modes can work simultaneously, or all three modes can work simultaneously.

[0057] In some embodiments, an isolation fence intrusion detection system is provided, including an ECU module and a plurality of the above-described smart sensors, wherein the ECU module includes one or more ECUs, and the ECU (as an edge computing unit) serves as the host computer of the smart sensors. Example 1

[0058] Reference Figure 3In one method of connecting multiple intelligent sensors (IDS) to an ECU, both ends of each cable to be tested are connected to the same IDS, forming a group of multiple IDS. All IDS are simultaneously connected to the ECU via the communication module. Each IDS connects to its respective cable through its detection port and uploads the detection results to the ECU via the communication port. The ECU then combines the detection results from multiple IDS and uploads them to the server.

[0059] One IDS can also communicate with its neighboring IDS through a communication module. When one of the interconnected IDSs fails, the neighboring fault-free IDS can report the failure of its neighboring non-functional IDS to its superior ECU. Example 2

[0060] Reference Figure 4 In the second method of connecting multiple intelligent sensors (IDS) to an ECU, each cable to be tested is connected to two adjacent IDS at both ends, and multiple IDS form a group. Multiple IDS are simultaneously connected to the ECU through the communication module. The two ends of the cable to be tested are connected to two adjacent IDS, one end of which is connected to the detection port TA / RA of one IDS, and the other end is connected to the detection port TB / RB of another IDS. The detection port TB / RB of the first IDS and the detection port TA / RA of the last IDS are left unconnected to the cable under test. Example 3

[0061] Reference Figure 5 In the third method of connecting multiple intelligent sensors (IDS) to an ECU within a group, both ends of a test cable are connected to the first and last IDS, and the two ends of other test cables are connected to two adjacent IDS. Multiple IDS form a group, and multiple intelligent sensors are simultaneously connected to the ECU through the communication module. The difference between this embodiment and embodiment 2 is that a test cable is connected between the detection port TB / RB of the first IDS and the detection port TA / RA of the last IDS. Example 4

[0062] Reference Figure 6This involves a group connection method between multiple IDS and multiple ECUs. Each ECU manages several IDS within its group. The connection method for the multiple IDS managed by each ECU can adopt the methods of Embodiment 1, Embodiment 2, or Embodiment 3. However, when an ECU communicates with its neighboring ECUs, it backs up the IDS data it manages to the neighboring ECUs. The advantage of this is that if a problem occurs in one ECU, its neighboring ECUs can temporarily take over the functions of the faulty ECU. For example, when ECU1 fails, IDS11, IDS12, ... IDS1m managed by ECU1 can be taken over by ECU2. ECU2 will also report the failure of ECU1, thereby reminding relevant personnel to handle the fault of ECU1.

[0063] There are two ways to wake up the IDS: the first is to be passively woken up when the ECU sends a control signal; the second is to actively report to the ECU when the IDS detects an abnormal situation (such as a cable break caused by damage to the isolation barrier and / or someone approaching).

[0064] For the same or similar parts among the various embodiments in this specification, please refer to each other.

[0065] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0066] In addition, the functional modules in the various embodiments of this utility model can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0067] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention.

Claims

1. A smart sensor for detecting intrusion through a security fence, characterized in that, The upper body and the lower body are detachably connected, and form a closed space when connected. The control unit is connected with the communication module, the detection signal generating / receiving module, the positioning module and the battery. The communication module is connected with an upper computer signal, and the lower body is provided with an antenna connected with the communication module. The human body presence detection module is connected with the detection signal generating / receiving module. The battery is connected with the control unit, the communication module, the detection signal generating / receiving module and the positioning module. The lower body is provided with a plurality of detection assemblies on the periphery, and each detection assembly is detachably connected with a cable to be detected.

2. The bollard intrusion detection smart sensor of claim 1, wherein, The detection assembly includes a first detection port group and a second detection port group fixedly arranged on the periphery of the lower body, and the first detection port group and the second detection port group are connected with the detection signal generating / receiving module.

3. The bollard intrusion detection smart sensor of claim 2, wherein, The first detection port group includes detection ports TA and RA, and the second detection port group includes detection ports TB and RB.

4. The bollard intrusion detection smart sensor of claim 1, wherein, The detection port group and the lower body are provided with a sealing gasket for preventing water from passing through the joint between the detection port group and the lower body.

5. The bollard intrusion detection smart sensor of claim 1, wherein, The lower body and the upper body are provided with a sealing gasket for sealing and preventing water, and the upper body and the lower body are connected by bolts.

6. The bollard intrusion detection smart sensor of claim 1, wherein, The antenna includes a built-in antenna and / or an external antenna connected with the communication module.

7. The bollard intrusion detection smart sensor of claim 1, wherein, The built-in antenna is fixedly connected to the lower body and located in the closed space when the upper body and the lower body are connected. The external antenna is fixedly connected to the lower body and located outside the closed space. The system further includes a grounding electrode connected to the ground, or connected to the isolation fence and then connected to the ground, or connected to the isolation fence and then forms a separate ground through the isolation fence.

8. An isolation fence intrusion detection system comprising an ECU module and a plurality of intelligent sensors according to any one of claims 1-7. Each cable to be detected is connected to the same intelligent sensor, and the plurality of intelligent sensors are connected to the ECU module through the communication module at the same time. Or each cable to be detected is connected to two adjacent intelligent sensors, and the plurality of intelligent sensors are connected to the ECU module through the communication module at the same time. Or one end of the cable to be detected is connected with the first smart sensor and the other end is connected with the last smart sensor, and the other ends of the other cables to be detected are connected with the adjacent two smart sensors, and the plurality of smart sensors are connected with the ECU module through the communication module at the same time.

Images