Perimeter intrusion detection system and method using mobile IP and magnetic field induction technology

Abstract

The invention belongs to the technical field of object protection, and particularly relates to a perimeter intrusion detection system and method using a mobile IP and a magnetic field induction technology. Comprising a plurality of detection nodes, two mobile IP servers, a voice gateway and a data server. The beneficial effects are that based on the magnetic field induction technology, the building perimeter is set as the magnetic field area, when an intruder throws an iron-containing object into the perimeter, the magnetoresistive sensor senses magnetic field disturbance, the eagle-eye camera automatically starts detection, and once the object crosses the perimeter, the eagle-eye camera automatically starts detection; the system sends an encrypted radio signal to the telephone watch of the security guard, the telephone watch vibrates and displays the 'GOAL' character, and the time is saved for the quick response of our person to the maximum extent. If the object thrown by the intruder does not contain iron, the eagle-eye camera can automatically track the object and give an alarm.

Description

Technical Field

[0001] The present invention belongs to the technical field of physical protection, and in particular relates to a perimeter intrusion detection system and method using mobile IP and magnetic field induction technology. Background Art

[0002] Magnetic field induction technology refers to a technology based on the principle of electromagnetic induction. When a part of the conductor of a closed circuit moves in a magnetic field to cut the magnetic lines of force, or the magnetic flux passing through the closed circuit changes, an induced current will be generated in the closed circuit; if the circuit is not closed, an induced electromotive force will be generated at both ends of the conductor.

[0003] Mobile IP technology allows mobile devices to keep their IP addresses unchanged when moving between different networks, thus achieving uninterrupted network connection.

[0004] A perimeter intrusion detection system is a system that uses intrusion detectors to detect the movement or other actions of intruders at the perimeter of a building.

[0005] Existing perimeter intrusion detection systems only include tension wire, infrared detection, microwave detection and other equipment. They can only detect intruders climbing and crossing such behaviors. They cannot track dangerous objects thrown by intruders into the perimeter in a timely manner, nor can they notify security personnel in time to respond. Summary of the Invention

[0006] The purpose of the present invention is to provide a perimeter intrusion detection system and method using mobile IP and magnetic field sensing technology, which mainly solves the problem that the existing perimeter intrusion detection system cannot track dangerous objects thrown by intruders into the perimeter in a timely manner, nor can it notify security personnel in a timely manner to respond.

[0007] The technical solution of the present invention is as follows: a perimeter intrusion detection system using mobile IP and magnetic field induction technology includes multiple detection nodes and two mobile IP servers, a voice gateway and a data server.

[0008] The detection node includes a magnetoresistive sensor, an Internet of Things gateway, a camera and a base station.

[0009] The magnetoresistive sensor is connected to the IoT gateway via a network cable. The IoT gateway, camera, and base station are all connected to the switch via network cables. The analog information of the magnetoresistive sensor is converted from analog to digital and reaches the IoT gateway, and then transmitted through the switch; the network video of the camera is directly transmitted through the switch; and the wireless signal of the base station is directly transmitted through the switch.

[0010] The magnetoresistive sensor is an intelligent sensor that integrates a microprocessor and an analog-to-digital conversion module. It can directly convert the sensed analog signal into a digital signal. The digital signal is input into the Internet of Things gateway and converted into a format suitable for IP network transmission.

[0011] The data server, two mobile IP servers and voice gateway are connected to the switch via network cables respectively, and the voice gateway is connected to the public switched telephone network via network cables or optical fibers.

[0012] The information of the detection node is transmitted to the data server through the switch for unified storage and management; the base station and the mobile IP server jointly provide communication, and the voice data received by the base station is connected to the public switched telephone network through the voice gateway.

[0013] A detection method comprises the following steps:

[0014] Step 1: If an intruder intrudes, the nearest magnetoresistive sensor detects the magnetic field disturbance, generates an alarm and feeds it back to the system server;

[0015] Step 2: When an intrusion occurs, the Eagle Eye camera performs high-speed visual tracking and generates an alarm, which is then fed back to the system server.

[0016] Step 3: The system server sends the word "GOAL" to the security guard's phone watch, and the phone watch vibrates, reminding the security guard to check and respond;

[0017] Step 4: The security personnel receives the alarm information and starts to respond. The security personnel responds through the real-time trajectory of the intruder displayed on the phone watch they wear, and makes a voice call through the phone watch until the intrusion response is completed.

[0018] The beneficial effects of the present invention are:

[0019] (1) This invention is based on magnetic field sensing technology. The perimeter of a building is set as a magnetic field area. When an intruder throws an object containing iron into the perimeter, the magnetoresistive sensor senses the magnetic field disturbance, and the Hawkeye camera automatically starts detection. Once the object crosses the perimeter, the system will send an encrypted radio signal to the security guard's phone watch, which will vibrate and display the word "GOAL", maximizing the time it takes for our personnel to respond quickly. If the object thrown by the intruder does not contain iron, the Hawkeye camera can also automatically track the object and issue an alarm.

[0020] (2) The present invention can track intruders, objects thrown by intruders, and enemy and friendly personnel in real time through an eagle-eye camera with visual tracking and intelligent analysis functions, and simultaneously display the enemy and friendly positions and trajectories in real time on an electronic map, thereby improving our response level and capability.

[0021] (3) The present invention connects multiple base stations and mobile IP servers. Our response personnel can contact the security personnel at each post seamlessly and in real time through voice, provide some real-time movement information of the intruder, and contact external rescue forces through the voice gateway. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A map of the magnetic field sensing area around the building;

[0023] Figure 2 A schematic diagram of a perimeter intrusion detection system using mobile IP and magnetic field sensing technology provided by the present invention;

[0024] Figure 3 This is the system response flow chart. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 As shown, the black area around the building perimeter is equipped with magnets, which also marks the area where the system's magnetoresistive sensors are located and their magnetic field sensing area. If an intruder throws a ferrous object over this area, the magnetoresistive sensors will detect the magnetic field disturbance, identifying an intrusion and triggering an alarm. The Hawkeye cameras will also automatically track the object at high speed and issue an alarm. If the intruder throws a non-ferrous object, the Hawkeye cameras will also automatically track the object and issue an alarm.

[0027] like Figure 2 As shown, a perimeter intrusion detection system using mobile IP and magnetic field sensing technology includes multiple nodes, switches and a back-end platform. The multiple nodes and the back-end platform are connected through a ring network formed by the switches.

[0028] Each detection node's equipment consists of a magnetoresistive sensor, an IoT gateway, a camera, and a base station. The magnetoresistive sensor is connected to the IoT gateway via a network cable, and the IoT gateway, camera, and base station are each connected to a switch via network cables. This constitutes the equipment composition of each detection node. The analog information from the magnetoresistive sensor undergoes analog-to-digital conversion before reaching the IoT gateway and being transmitted via the switch. The network video from the camera, preferably an Eagle Eye camera, is transmitted directly through the switch. The wireless signal from the base station is transmitted directly through the switch. The magnetoresistive sensor is an intelligent sensor that integrates a microprocessor and an analog-to-digital conversion module, capable of directly converting the sensed analog signal into a digital signal. This digital signal is then input into the IoT gateway, converted into a format suitable for transmission over an IP network, and then connected to the system for transmission. The magnetoresistive sensor requires regular calibration, and its magnetic field baseline value can be set.

[0029] The backend platform includes a data server, two mobile IP servers, and a voice gateway. The data server and the two mobile IP servers respectively perform the functions of home agent and foreign agent in mobile IP technology. The voice gateway is connected to the switch via network cables, and the voice gateway is connected to the public switched telephone network via network cables or optical fibers.

[0030] The information from each detection node is transmitted via a switch to the data server on the back-end platform for unified storage and management. The base station and mobile IP server jointly provide seamless communication. In addition, the voice data received by the base station can be connected to the public switched telephone network via a voice gateway, allowing security personnel to seek help from external response forces.

[0031] The network involved in this system can be a simple network or different subnets. It supports mobile IP technology to ensure seamless communication between mobile terminals.

[0032] The risk formula for an intruder entering a building through the perimeter is: R = P A ×(1-P E )×C, where P A P is the probability of an intruder attack within a certain period of time, with a value of 0 to 1. E is the probability of system effectiveness, with a value of 0 to 1, and C is the normalization factor, whose value is related to the severity of the event, with a value of 0 to 1.

[0033] System effectiveness probability P E It is closely related to the effectiveness probability of each device in the system and is the product of the effectiveness probabilities of each device, that is,

[0034] The effectiveness probability of each device in the system can be obtained by regular measurements by security personnel, or by statistics of historical operation data of each device automatically collected by the system server. Once it is found that the effectiveness probability of each device in the system is A ×(1-P E If the risk R of an intruder entering the building through the perimeter calculated by )×C is higher than a certain threshold, the equipment needs to be maintained or replaced to reduce the risk R.

[0035] The nearest magnetoresistive sensor can detect the intrusion of the intruder, the Eagle Eye camera can track the intruder and the objects thrown by the intruder, as well as the enemy and friendly personnel in real time, the base station and mobile IP server can provide seamless wireless communication means to ensure that our personnel can talk to each other through the phone watch; the voice gateway is responsible for connecting the system and the public switched telephone network, and our personnel can use the phone watch to call the phone number on the public switched telephone network to request support from external forces such as the armed police; the data server can uniformly store and manage the sensor data and other communication data obtained by each node.

[0036] The system's magnetoresistive sensors are normally in monitoring mode. If an intruder throws a ferrous object into the perimeter, the sensors detect a disturbance in the magnetic field. The system switches from monitoring mode to active mode and sends an alarm to the backend. The Hawkeye cameras also initiate detection until the magnetoresistive sensors detect a stable magnetic field and re-enter monitoring mode.

[0037] The system is equipped with multiple Hawkeye cameras with visual tracking capabilities, which can automatically track objects thrown by intruders in real time at a speed of at least 300 frames per second. Once the object crosses the perimeter, the system will send an encrypted radio signal to the security personnel's phone watch, which will vibrate and display the word "GOAL"; and can display the enemy and friendly positions and trajectories in real time and with high precision on the electronic map, thereby improving our response level and capability.

[0038] The system is connected to multiple communication base stations. The equipment and the phone watches of our security personnel support mobile IP technology. Therefore, when tracking intruders, our response personnel can speak to the phone watches they are wearing through voice, and contact the security personnel at each post in full-duplex and real-time, providing some real-time movement information of the intruder to facilitate tracking of the intruder.

[0039] like Figure 3 As shown, if an intruder invades, the nearest magnetoresistive sensor will sound an alarm, the Eagle Eye camera will perform high-speed visual tracking and alarm, the system will send the word "GOAL" to the phone watch of our security personnel and the phone watch will vibrate. Our personnel will start to respond after receiving the alarm information. Our personnel can respond through the real-time trajectory of the intruder displayed on the phone watch they are wearing, and can make voice calls through the phone watch until the intrusion response is completed.

[0040] A perimeter intrusion detection method using mobile IP and magnetic field sensing technology includes the following steps:

[0041] Step 1: If an intruder intrudes, the nearest magnetoresistive sensor (the magnetoresistive sensor has an absolute coordinate position (Xi, Yi), and the intruder has an absolute coordinate position (Xm, Ym). The square of the distance between the two is the sum of the squares of the differences between the two horizontal and vertical coordinates. The nearest distance is the smallest) will detect the magnetic field disturbance, generate an alarm, and feedback to the data server.

[0042] Step 2: When an intrusion occurs, the Eagle Eye camera performs high-speed visual tracking and generates an alarm, which is then fed back to the data server.

[0043] Step 3: The data server sends the word "GOAL" to the security guard's phone watch, and the phone watch vibrates, reminding the security guard to check and respond;

[0044] Step 4: The security personnel receives the alarm information and starts to respond. The security personnel can respond through the real-time trajectory of the intruder displayed on the phone watch they wear, and can make voice calls through the phone watch until the intrusion response is completed.

Claims

1. A perimeter intrusion detection system using mobile IP and magnetic field sensing technology, characterized by: It includes multiple detection nodes, two mobile IP servers, a voice gateway and a data server.

2. The perimeter intrusion detection system using mobile IP and magnetic field sensing technology as claimed in claim 1, characterized in that: The detection node includes a magnetoresistive sensor, an Internet of Things gateway, a camera and a base station.

3. The perimeter intrusion detection system using mobile IP and magnetic field sensing technology as claimed in claim 2, characterized in that: The magnetoresistive sensor is connected to the IoT gateway via a network cable. The IoT gateway, camera, and base station are all connected to the switch via network cables. The analog information of the magnetoresistive sensor is converted from analog to digital and reaches the IoT gateway, and then transmitted through the switch; the network video of the camera is directly transmitted through the switch; and the wireless signal of the base station is directly transmitted through the switch.

4. The perimeter intrusion detection system using mobile IP and magnetic field sensing technology as claimed in claim 2, characterized in that: The magnetoresistive sensor is an intelligent sensor that integrates a microprocessor and an analog-to-digital conversion module. It can directly convert the sensed analog signal into a digital signal. The digital signal is input into the Internet of Things gateway and converted into a format suitable for IP network transmission.

5. The perimeter intrusion detection system using mobile IP and magnetic field sensing technology as claimed in claim 1, characterized in that: The data server, two mobile IP servers and voice gateway are connected to the switch via network cables respectively, and the voice gateway is connected to the public switched telephone network via network cables or optical fibers.

6. The perimeter intrusion detection system using mobile IP and magnetic field sensing technology as claimed in claim 2, characterized in that: The information of the detection node is transmitted to the data server through the switch for unified storage and management; the base station and the mobile IP server jointly provide communication, and the voice data received by the base station is connected to the public switched telephone network through the voice gateway.

7. A detection method using the system according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: If an intruder intrudes, the nearest magnetoresistive sensor detects the magnetic field disturbance, generates an alarm and feeds it back to the data server; Step 2: When an intrusion occurs, the Eagle Eye camera performs high-speed visual tracking and generates an alarm, which is then fed back to the data server. Step 3: The data server sends the word "GOAL" to the security guard's phone watch, and the phone watch vibrates, reminding the security guard to check and respond; Step 4: The security personnel receives the alarm information and starts to respond. The security personnel responds through the real-time trajectory of the intruder displayed on the phone watch they wear, and makes a voice call through the phone watch until the intrusion response is completed.

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