Magnetic sensitive sensor type perimeter intrusion alarm
By using the installation components and sensing units of the magnetically sensitive perimeter intrusion alarm device, the problems of parallel cable laying and intruder location determination are solved, reducing the risk of false alarms.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INST OF SENSOR TECH GANSU ACAD OF SCI
- Filing Date
- 2025-09-16
- Publication Date
- 2026-07-24
AI Technical Summary
In existing leaky cable perimeter intrusion alarm systems, it is difficult to lay the cables in parallel, making it impossible to determine the location of the intruder, and the large electromagnetic field range makes it easy to misjudge.
The magnetically sensitive perimeter intrusion alarm device uses a mounting assembly to install the leaky cable and the sensing cable in parallel, and uses a sensing unit to determine the location of the intruder, reducing false alarms caused by electromagnetic radiation.
It enables parallel cable laying and precise location of intruders, reducing the risk of misjudgment.
Smart Images

Figure CN224553857U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of perimeter intrusion alarm devices, and in particular to a magnetically sensitive perimeter intrusion alarm device. Background Technology
[0002] Leaky cable perimeter intrusion alarm system is a highly efficient and concealed security protection device. The system utilizes the electromagnetic field generated by the leaky cable and uses an induction cable to sense the electromagnetic field. When a person intrudes, the electromagnetic field is disturbed, and an electrical signal is generated in the induction cable. The host determines whether it is a person intrusion or interference from a small animal based on the strength and waveform of the electrical signal. The two cables are buried underground, which makes this method highly concealed and reliable.
[0003] The leakage cable and sensing cable of the leakage cable perimeter intrusion alarm system need to be installed in parallel. However, the current cable laying lacks auxiliary positioning structures, making it difficult to lay the cables in parallel. In addition, the installation of the two cables can only determine if someone has entered, but cannot determine which section of the cable the person is on. Furthermore, the electromagnetic field range is large, requiring the establishment of a no-man's-land. The movement of patrol personnel may also cause the device to make false intrusion judgments. Utility Model Content
[0004] To overcome the problem that most leaky cable perimeter intrusion alarm systems require the leaky cable and sensor cable to be laid in parallel, and that the current cable laying lacks auxiliary positioning structures, it is difficult to lay the cables in parallel. At the same time, the two cables can only determine if someone has entered, but cannot determine which section of the cable the person is on. Furthermore, the electromagnetic field range is large, requiring the establishment of no-man's-land. The movement of patrol personnel may also cause the device to make false intrusion judgments.
[0005] The technical solution of this utility model is as follows: a magnetically sensitive perimeter intrusion alarm device, including an alarm host, a leaky cable, and mounting components. A leaky cable for emitting electromagnetic waves is provided on one side of the alarm host, and an induction cable for sensing electromagnetic waves is provided on one side of the leaky cable. An induction unit is provided on one side of the alarm host. The leaky cable is electrically connected to the alarm host, and the induction unit is electrically connected to the induction cable and the alarm host. A mounting base is provided at the bottom of the leaky cable and the induction cable. Mounting components are provided on both sides of the mounting base, and a set of induction cables is provided on top of each set of mounting bases.
[0006] Preferably, the mounting base has side plates on both sides, which are integrally formed by bending sheet metal and the mounting base, and the angle between the side plates and the mounting base is less than 90 degrees.
[0007] Preferably, a wire outlet hole is provided at the connection between the side plate and the induction cable, and the diameter of the wire outlet hole is the same as the diameter of the induction cable.
[0008] Preferably, the mounting assembly includes connecting wing plates, with connecting wing plates provided on both sides of the mounting base, and the connecting wing plates of the two sets of mounting bases are fixed together with bolts and nuts.
[0009] Preferably, the mounting assembly also includes a wire frame, which is provided above the mounting base. The connection between the mounting base and the wire frame is provided with connection holes, and the wire frame and the mounting base are fixed together with bolts and nuts.
[0010] Preferably, the distance between the cable tray connected to the leaky cable and the cable tray connected to the induction cable is always the same.
[0011] Preferably, a corner seat is provided at the corner of the mounting base, and a partition is provided at the sealing end of the mounting base or the corner seat.
[0012] The beneficial effects of this utility model are:
[0013] The leaky cable and the sensor cable are installed above the mounting base using an installation assembly, ensuring that the leaky cable and the sensor cable remain parallel at all times and guaranteeing their normal operation. At the same time, the sensor cable and the leaky cable are set up in sections, and the leaky cable is electrically connected to the alarm host using a sensor extension unit, so that the alarm host can determine the intruder's exact location based on the changes in the sensor cable's signal. Attached Figure Description
[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;
[0015] Figure 2 The diagram shown is a three-dimensional structural schematic of the leakage cable of this utility model;
[0016] Figure 3 The diagram shown is a three-dimensional structural schematic of the induction cable of this utility model.
[0017] Figure 4 The diagram shown is a three-dimensional structural schematic of the mounting base of this utility model.
[0018] Figure 5 The diagram shown is a three-dimensional structural schematic of the mounting base of this utility model.
[0019] Explanation of reference numerals in the attached diagram: 1. Alarm main unit; 2. Leakage cable; 3. Induction cable; 4. Induction unit; 5. Mounting base; 501. Side plate; 502. Outlet hole; 503. Connecting wing plate; 504. Connecting hole; 6. Corner seat; 7. Partition plate; 8. Cable tray. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Please see Figures 1-5This utility model provides an embodiment of a magnetic sensing perimeter intrusion alarm device, comprising an alarm host 1; characterized in that it further comprises a leaky cable 2 and an installation assembly, wherein a leaky cable 2 for emitting electromagnetic waves is provided on one side of the alarm host 1, an induction cable 3 for sensing electromagnetic waves is provided on one side of the leaky cable 2, an induction unit 4 is provided on one side of the alarm host 1, the induction unit 4 contains a magnetic sensor and is electrically connected to the alarm host 1, the magnetic sensor is installed at the connection between the induction unit 4 and the induction cable 3, the leaky cable 2 is electrically connected to the alarm host 1, and the induction unit 4, the induction cable 3, and the alarm... The main unit 1 is electrically connected. The bottom of the leaky cable 2 and the sensing cable 3 are provided with mounting bases 5. Mounting components are provided on both sides of the mounting bases 5. Each set of mounting bases 5 has a separate set of sensing cables 3. The leaky cable 2 and the sensing cable 3 are installed on the mounting bases 5 through the mounting components, so that the leaky cable 2 and the sensing cable 3 always remain parallel, ensuring the normal use of the leaky cable 2 and the sensing cable 3. At the same time, the sensing cable 3 and the leaky cable 2 are set in sections, and the leaky cable 2 is electrically connected to the alarm main unit 1 using the sensing extension 4, so that the alarm main unit 1 can determine the specific location of the intruder based on the signal changes of the sensing cable 3.
[0022] Please see Figure 4 In this embodiment, side plates 501 are provided on both sides of the mounting base 5. The side plates 501 and the mounting base 5 are integrally formed by bending sheet metal. The angle between the side plates 501 and the mounting base 5 is less than 90 degrees. A wire outlet hole 502 is provided at the connection between the side plates 501 and the induction cable 3. The diameter of the wire outlet hole 502 is the same as the diameter of the induction cable 3. The mounting assembly includes connecting wing plates 503. Connecting wing plates 503 are provided on both sides of the mounting base 5. The connecting wing plates 503 of the two sets of mounting base 5 are fixed with bolts and nuts. The connecting wing plates 503 facilitate the connection and fixation of the mounting base 5, the corner seat 6 and the partition plate 7 with bolts and nuts. The side plates 501 block the radiation of the electromagnetic field to the side, preventing the movement of patrol personnel from disturbing the magnetic field and causing misjudgment. The wire outlet hole 502 facilitates the installation of the induction cable 3.
[0023] Please see Figure 5 In this embodiment, the installation assembly also includes a wire frame 8. The wire frame 8 is disposed above the mounting base 5. A connection hole 504 is provided at the connection between the mounting base 5 and the wire frame 8. The wire frame 8 is fixed to the mounting base 5 with bolts and nuts. The distance between the wire frame 8 connected to the leakage cable 2 and the wire frame 8 connected to the induction cable 3 is always the same. The connection hole 504 allows the operator to use bolts and nuts to connect and fix the wire frame 8 to the mounting base 5. When installing the leakage cable 2 and the induction cable 3, it is only necessary to install the leakage cable 2 and the induction cable 3 above the wire frame 8 to ensure that the leakage cable 2 and the induction cable 3 are in a parallel state.
[0024] During cable laying, the mounting base 5, corner bracket 6 and partition 7 are connected by bolts and nuts according to the required cable route. The cable frame 8 is then fixed to the mounting base 5 or corner bracket 6 by bolts and nuts. After that, the leakage cable 2 and the induction cable 3 are installed above the cable frame 8 and buried together underground. The connection hole 504 is pre-drilled, so the position of the cable frame 8 can be determined, thus ensuring that the leakage cable 2 and the induction cable 3 are set in parallel.
[0025] When the device is in use, the alarm host 1 energizes the leaking cable 2 and emits electromagnetic waves. The side plate 501 isolates the electromagnetic waves from radiation to the side, so that the electromagnetic waves can only radiate above the mounting base 5 of the leaking cable 2, thereby reducing the range of the electromagnetic field and preventing misjudgment caused by the movement of patrol personnel. When someone enters, the electromagnetic field near the person is disturbed, and the induction cable 3 in that area generates an electrical signal. The magnetic sensor at the connection between the induction unit 4 and the induction cable 3 generates an electrical signal, which is received by the induction unit 4 and transmitted to the alarm host 1. Each induction unit 4 has an independent code at the alarm host 1. The alarm host 1 confirms the location of the intruder based on the number of the induction unit 4.
[0026] Through the above steps, the leaky cable 2 and the sensing cable 3 are installed above the mounting base 5 using the installation components, ensuring that the leaky cable 2 and the sensing cable 3 remain parallel at all times, thus guaranteeing their normal use. At the same time, the sensing cable 3 and the leaky cable 2 are set up in sections, and the leaky cable 2 is electrically connected to the alarm host 1 using the sensing extension unit 4, so that the alarm host 1 can determine the specific location of the intruder based on the signal changes of the sensing cable 3.
Claims
1. A magnetically sensitive perimeter intrusion alarm device, comprising an alarm control panel (1); characterized in that: It also includes a leaky cable (2) and an installation assembly. A leaky cable (2) for emitting electromagnetic waves is provided on one side of the alarm host (1). An induction cable (3) for sensing electromagnetic waves is provided on one side of the leaky cable (2). An induction unit (4) is provided on one side of the alarm host (1). A magnetic sensor is provided inside the induction unit (4) and is electrically connected to the alarm host (1). The magnetic sensor is installed at the connection between the induction unit (4) and the induction cable (3). The leaky cable (2) is electrically connected to the alarm host (1). The induction unit (4) is electrically connected to the induction cable (3) and the alarm host (1). A mounting base (5) is provided at the bottom of the leaky cable (2) and the induction cable (3). Installation assemblies are provided on both sides of the mounting base (5). A set of induction cables (3) is provided above each set of mounting bases (5).
2. The magnetically sensitive perimeter intrusion alarm device according to claim 1, characterized in that: Side plates (501) are provided on both sides of the mounting base (5). The side plates (501) and the mounting base (5) are integrally formed by sheet metal bending. The included angle between the side plates (501) and the mounting base (5) is less than 90 degrees.
3. The magnetically sensitive perimeter intrusion alarm device according to claim 2, characterized in that: A wire outlet hole (502) is provided at the connection between the side plate (501) and the induction cable (3), and the diameter of the wire outlet hole (502) is the same as the diameter of the induction cable (3).
4. The magnetically sensitive perimeter intrusion alarm device according to claim 1, characterized in that: The mounting assembly includes connecting wing plates (503), and connecting wing plates (503) are provided on both sides of the mounting base (5). The connecting wing plates (503) of the two sets of mounting bases (5) are fixed with bolts and nuts.
5. The magnetically sensitive perimeter intrusion alarm device according to claim 1, characterized in that: The mounting assembly also includes a wire frame (8), which is provided above the mounting base (5). A connection hole (504) is provided at the connection between the mounting base (5) and the wire frame (8). The wire frame (8) and the mounting base (5) are fixed together with bolts and nuts.
6. The magnetically sensitive perimeter intrusion alarm device according to claim 5, characterized in that: The distance between the wire rack (8) connected to the leaking cable (2) and the wire rack (8) connected to the induction cable (3) is always the same.
7. The magnetically sensitive perimeter intrusion alarm device according to claim 1, characterized in that: A corner seat (6) is provided at the corner of the mounting base (5), and a partition (7) is provided at the sealing end of the mounting base (5) or the corner seat (6).