Intelligent very low frequency induction perimeter

By designing the intelligent fair-low frequency sensing perimeter, using an adaptive fair-low frequency sensing intrusion alarm device and a 360-degree radiation, the existing bioinduction perimeter is solved and the existing bioinduction perimeter is easily disturbed by environmental interference, achieving stable, reliable, fast and convenient bioinduction function in a field environment.

CN223038479UActive Publication Date: 2025-06-27孙建华
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Patent Information

Application Number
CN202420436186.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-06
Publication Date
2025-06-27
Estimated Expiration
2034-03-06

AI Technical Summary

Technical Problem

The existing bio-induced perimeter is easily disturbed by external environment, resulting in unstable working voltage and false alarm triggering, and manual debugging of working frequency and alarm voltage is required, making it difficult to meet the needs of stability, reliability, quick and convenient construction in the field environment.

Method used

An intelligent fairly low frequency induction perimeter is designed, and an adaptive fairly low frequency induction intrusion alarm device is used to generate a 360-degree radiated outward through the excitation wire, forming a virtual space barrier, and the induction wire collects electric field changes signals and transmits them to the alarm device to realize the non-contact induction alarm of the human bioelectric field, and has intelligent functions of adaptive power adjustment, sensitivity setting and temperature drift compensation.

Benefits of technology

It effectively eliminates small animals, electromagnetic fields, non-biological occlusion, and climate interference, and has extremely low rates of missed and false alarms, achieving stable, reliable, fast and convenient biosensing functions in outdoor environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an intelligent very-low-frequency induction perimeter which comprises a perimeter alarm intrusion detector, an induction wire, an excitation wire, a case support, a pipe clamp support, an induction sheath and an excitation sheath, and the induction sheath and the excitation sheath are sequentially arranged between the case support and the pipe clamp support from top to bottom. The induction sheath and the excitation sheath are arranged in parallel, the induction wire is sleeved with the induction sheath, the excitation wire is sleeved with the excitation sheath, and the excitation wire is used for generating a space very-low-frequency induction electric field. Compared with the prior art, the utility model has the following beneficial effects: the excitation lead and the induction lead form a solid fence by taking the two relatively parallel glass fiber tube sheaths as carriers, and the solid fence can be fixed on the top or wall surfaces of walls, iron fences and the like of military, police, nuclear and supervision places through the case bracket and the tube clamp bracket, so that the solid fence has a physical blocking function and also has the function of protecting the environment; and a space virtual barrier can be formed.
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Description

Technical Field

[0001] The utility model relates to an intelligent very low frequency induction perimeter, belonging to the field of biological detection sensors. Background Art

[0002] Biological induction perimeters are relatively rare in the current domestic and foreign markets compared with other anti-theft induction devices. Compared with other anti-theft devices, such as infrared induction devices, they have the physical characteristics of non-contact detection of human biological magnetic fields to generate alarm signals, with high reliability and good safety. For example, an electronic anti-theft fence and its manufacturing method recorded in Chinese Patent GN01107018.8. The electronic anti-theft fence disclosed in this patent is a biological induction electronic anti-theft fence. However, this biological induction device is easily interfered by the external environment, such as small animals, temperature, rainy weather and other environmental interferences, resulting in unstable working voltage and false triggering of alarms. In addition, its working parameters need to be manually adjusted, and the engineering construction speed is limited. It is necessary to manually adjust the working frequency and alarm voltage, which is difficult to meet the use requirements of stable and reliable operation in the wild environment and fast and convenient construction.

[0003] The inventor of the present invention has conducted in-depth research on the existing biological induction perimeters and designed a brand-new biological induction perimeter. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide an intelligent very low frequency induction perimeter.

[0005] In order to achieve the above purpose, the present utility model is realized through the following technical solutions:

[0006] An intelligent very low frequency induction perimeter, comprising a perimeter alarm intrusion detector, an induction wire, an excitation wire, a chassis bracket, a pipe clamp bracket, an induction sheath and an excitation sheath. The chassis bracket and the pipe clamp bracket are arranged in parallel. An induction sheath and an excitation sheath are sequentially arranged between the chassis bracket and the pipe clamp bracket from top to bottom. The induction sheath and the excitation sheath are arranged in parallel. The induction sheath is sleeved on the induction wire, and the excitation sheath is sleeved on the excitation wire. The excitation wire is used to generate a spatial very low frequency induction electric field, and the induction wire is used to sense the spatial very low frequency induction electric field and transmit the electric signal generated by the change of the disturbed spatial very low frequency induction electric field to the perimeter alarm intrusion detector.

[0007] Further, the perimeter intrusion detector includes a chassis, an adaptive very low frequency induction intrusion alarm device, a tamper switch, a self-check indicator light, a voice device, an audible and visual alarm device, and a power supply. The chassis is fixed below the chassis bracket. The adaptive very low frequency induction intrusion alarm device, the voice device, the audible and visual alarm device, and the power supply are all arranged inside the chassis. The tamper switch is installed inside the chassis, and the self-check indicator light is installed on the panel of the chassis.

[0008] Further, the chassis bracket is successively provided with a pipe clamp one and a pipe clamp two from top to bottom. The pipe clamp bracket is successively provided with a pipe clamp three and a pipe clamp four from top to bottom. The induction sheath is clamped on the pipe clamp one and the pipe clamp three, and the excitation sheath is clamped on the pipe clamp two and the pipe clamp four.

[0009] Further, the induction sheath includes an induction sheath one and an induction sheath two. The induction sheath one and the induction sheath two are respectively clamped on the pipe clamp one and the pipe clamp three. A tee one is sleeved on the induction sheath one, and the tee one is clamped on the pipe clamp one. The induction wire includes an induction wire one and an induction wire two. The induction sheath one and the induction sheath two are respectively sleeved on the induction wire one and the induction wire two.

[0010] Further, the excitation sheath includes an excitation sheath one and an excitation sheath two. The excitation sheath one and the excitation sheath two are respectively clamped on the pipe clamp two and the pipe clamp four. A tee two is sleeved on the excitation sheath one, and the tee two is clamped on the pipe clamp two. The excitation wire includes an excitation wire one and an excitation wire two. The excitation sheath one and the excitation sheath two are respectively sleeved on the excitation wire one and the excitation wire two.

[0011] Further, one ends of the induction wire one and the induction wire two are suspended, and the other ends of the induction wire one and the induction wire two are both connected to the induction wire lead through the tee one. The end of the induction wire lead is connected to the adaptive very low frequency induction intrusion alarm device inside the chassis.

[0012] Further, one ends of the excitation wire one and the excitation wire two are suspended, and the other ends of the excitation wire one and the excitation wire two are both connected to the excitation wire lead through the tee two. The end of the excitation wire lead is connected to the adaptive very low frequency induction intrusion alarm device inside the chassis.

[0013] Further, the bottoms of the chassis bracket and the pipe clamp bracket are respectively connected with a universal base one and a universal base two.

[0014] Further, both the chassis bracket and the pipe clamp bracket are in an F-shaped structure.

[0015] Further, the number of both the chassis bracket and the pipe clamp bracket is an integer greater than or equal to...

[0016] Advantages of the present utility model:

[0017] The present utility model not only forms a very low frequency induction electric field around its axis through the excitation wire. The electric field mainly radiates outward in a 360-degree direction centered on the excitation wire and around its axis. The electric field radiating outward in this 360-degree direction constitutes a virtual space barrier. The extended area of this virtual space barrier is also the warning range of the intelligent very low frequency induction perimeter provided by the present utility model. That is, the movement of organisms entering this area will cause a change in the voltage value converted by the change in the electric field intensity of the very low frequency virtual space barrier, and this voltage value is transmitted to the adaptive very low frequency induction intrusion alarm device, and then corresponding reactions are made. Moreover, the excitation wire and the induction wire also form a physical fence with two relatively parallel fiberglass sheaths as carriers. Through the chassis bracket and the pipe clamp bracket, it can be fixed on the top or wall of the fences, iron fences, etc. of military, police, nuclear and supervision sites, and has a physical blocking function with a height of 30 - 200 cm.

[0018] The intelligent very low frequency induction perimeter provided by the present utility model adopts an adaptive very low frequency induction intrusion alarm device, and has the physical characteristics of 100% response to non-contact induction alarm of the human body bioelectric field and non-response to non-biological substances.

[0019] The intelligent very low frequency induction perimeter provided by the present utility model adopts an adaptive very low frequency induction intrusion alarm device, and has the intelligence of power-on self-checking fault alarm, 256-level adaptive power adjustment, 16-level sensitivity setting, and temperature drift compensation, and is especially suitable for all-weather field deployment.

[0020] The intelligent very low frequency induction perimeter provided by the present utility model adopts an adaptive very low frequency induction intrusion alarm device, effectively excludes interference from small animals, electromagnetic fields, non-biological obstructions, and climates (thunderstorms, thick fogs, sandstorms), and has an extremely low false alarm and missed alarm rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a three-dimensional structure schematic diagram of an intelligent very low frequency induction perimeter of the present utility model;

[0023] Figure 2 Schematic diagram of a partial structure of an intelligent very low frequency induction perimeter of the present utility model Figure 1 ;

[0024] Figure 3 Schematic diagram of a partial structure of an intelligent very low frequency induction perimeter of the present utility model Figure 2 。

[0025] In the figure, 1. Perimeter alarm intrusion detector; 2. Inductive wire; 3. Excitation wire; 4. Chassis bracket; 5. Pipe clamp bracket; 6. Inductive sheath; 7. Excitation sheath; 8. Pipe clamp 1; 9. Pipe clamp 2; 10. Pipe clamp 3; 11. Pipe clamp 4; 12. Inductive wire 1; 13. Inductive wire 2; 14. Inductive sheath 1; 15. Inductive sheath 2; 16. Chassis; 17. Tee 1; 18. Excitation wire 1; 19. Excitation wire 2; 20. Excitation sheath 1; 21. Excitation sheath 2; 22. Tee 2; 23. Universal base 1; 24. Universal base 2; 25. Self-check indicator light. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-3The utility model provides an intelligent very low frequency induction perimeter technical solution, including a perimeter alarm intrusion detector 1, an induction wire 2, an excitation wire 3, a chassis bracket 4, a pipe clamp bracket 5, an induction sheath 6 and an excitation sheath 7, wherein the chassis bracket 4 and the pipe clamp bracket 5 are arranged in parallel, and an induction sheath 6 and an excitation sheath 7 are arranged between the chassis bracket 4 and the pipe clamp bracket 5 from top to bottom, and the induction sheath 6 and the excitation sheath 7 are arranged in parallel, the induction sheath 6 is sleeved on the induction wire 2, and the excitation sheath 7 is sleeved on the excitation wire 3, and the excitation wire 3 is used to generate a space very low frequency induction electric field, and the induction wire 2 is used to sense the very low frequency induced electric field in the space, and transmit the electrical signal generated by the change of the very low frequency induced electric field in the disturbed space to the perimeter alarm intrusion detector 1. The induction wire 2 and the excitation wire 3 form two 360-degree very low frequency virtual barriers, wherein the intensity of the very low frequency induced electric field generated by the excitation wire is controlled by the signal sent by the central processing module. The very low frequency induction wire collects the electrical signal generated by the change of the very low frequency induced electric field in the space disturbed by the human body, and senses the state change due to intrusion or attempted intrusion. The induction wire 2 and the excitation wire 3 are both retractable, and the induction sheath 6 and the excitation sheath 7 are retractable, and can be retracted and retracted with the retraction of the wires.

[0028] See also Figures 1-3 The number of both the chassis bracket 4 and the pipe clamp bracket 5 is an integer greater than or equal to 1. The number of the chassis bracket 4 and the pipe clamp bracket 5 can be selected according to the installation environment, so that the sensing wire 2 and the excitation wire 3 can circle around the warning area to achieve full coverage of the warning range.

[0029] See also Figures 1-3 The perimeter alarm intrusion detector 1 includes a chassis 16, an adaptive very low frequency induction intrusion alarm device, an anti-dismantling switch, a self-test indicator light 25, a voice device, an audible and visual alarm device and a power supply. The chassis 16 is fixed below the chassis bracket 4. The adaptive very low frequency induction intrusion alarm device, the voice device, the audible and visual alarm device and the power supply are all arranged inside the chassis 16. The anti-dismantling switch is installed in the chassis 16, and the self-test indicator light 25 is installed on the panel of the chassis 16. The induction wire 2 transmits the intrusion signal in the very low frequency induction electric field to the adaptive very low frequency induction intrusion alarm device, and the adaptive very low frequency induction intrusion alarm device controls the voice device and the audible and visual alarm device to perform voice alarm and audible and visual alarm.

[0030] See also Figures 1-3, the chassis bracket 4 is successively provided with a first pipe clamp 8 and a second pipe clamp 9 from top to bottom, the pipe clamp bracket 5 is successively provided with a third pipe clamp 10 and a fourth pipe clamp 11 from top to bottom, the induction sheath 6 is clamped on the first pipe clamp 8 and the third pipe clamp 10, the excitation sheath 7 is clamped on the second pipe clamp 9 and the fourth pipe clamp 11, the induction sheath 6 includes a first induction sheath 14 and a second induction sheath 15, the first induction sheath 14 and the second induction sheath 15 are respectively clamped on the first pipe clamp 8 and the third pipe clamp 10, and the stability between the chassis bracket 4 and the pipe clamp bracket 5 and the induction sheath 6 and the excitation sheath 7 is improved through the first pipe clamp 8, the second pipe clamp 9, the third pipe clamp 10 and the fourth pipe clamp 11, thereby achieving the purpose of improving the stability of the induction wire 2 and the excitation wire 3;A tee joint 17 is sleeved on the induction sheath 14. The tee joint 17 is clamped on the pipe clamp 8. The induction wire 2 includes an induction wire 12 and an induction wire 13. The induction sheath 14 and the induction sheath 15 are respectively sleeved on the induction wire 12 and the induction wire 13. The excitation sheath 7 includes an excitation sheath 20 and an excitation sheath 21. The excitation sheath 20 and the excitation sheath 21 are respectively clamped on the pipe clamp 9 and the pipe clamp 11. A tee joint 22 is sleeved on the excitation sheath 20. The tee joint 22 is clamped on the pipe clamp 9. The excitation wire 3 includes an excitation wire 18 and an excitation wire 19. The excitation sheath 20 and the excitation sheath 21 are respectively sleeved on the excitation wire 18 and the excitation wire 19. One ends of the induction wire 12 and the induction wire 13 are suspended. The other ends of the induction wire 12 and the induction wire 13 are both connected to the induction wire lead through the tee joint 17. The end of the induction wire lead is connected to the adaptive very low frequency induction intrusion alarm device in the chassis 16. The induction wire 12 and the induction wire 13 are used to collect the electrical signals generated by the change of the very low frequency induction electric field in the disturbed space and also need to be connected to the induction wire lead to facilitate the communication connection with the perimeter alarm intrusion detector 1. And the tee joint 17 is a protection structure for protecting the connection between the induction wire 12 and the induction wire 13 and the induction wire lead. One ends of the excitation wire 18 and the excitation wire 19 are suspended. The other ends of the excitation wire 18 and the excitation wire 19 are both connected to the excitation wire lead through the tee joint 22. The end of the excitation wire lead is connected to the adaptive very low frequency induction intrusion alarm device in the chassis 16. The excitation wire 18 and the excitation wire 19 are used to generate the very low frequency induction electric field and control the strength of the very low frequency induction electric field and also need to be connected to the excitation wire lead to facilitate the communication connection with the perimeter alarm intrusion detector 1. And the tee joint 22 is a protection structure for protecting the connection between the excitation wire 18 and the excitation wire 19 and the excitation wire lead. At the same time, to protect the induction wire lead and the excitation wire lead, the chassis support 4 can also be set as a hollow structure or an external conduit, so that the induction wire lead and the excitation wire lead can directly enter the inside of the chassis support 4 or the inside of the external conduit through the interfaces of the tee joint 17 and the tee joint 22 and then penetrate into the chassis to communicate with the adaptive very low frequency induction intrusion alarm device.;

[0031] Refer to Figures 1-3, the bottom parts of the chassis bracket 4 and the pipe clamp bracket 5 are respectively connected with a universal base one 23 and a universal base two 24. The intelligent very low frequency induction perimeter can meet the installation requirements at various angles through the universal base one 23 and the universal base two 24. Both the chassis bracket 4 and the pipe clamp bracket 5 are in an F-shaped structure. The chassis bracket 4 and the pipe clamp bracket 5 can be in an F-shaped structure or other shapes, not limited to the F-shaped structure only. As long as the bracket can meet the installation requirements, it is within the protection scope of this application.

[0032] The excitation wire 3 forms a very low frequency induction electric field around its axis. It is mainly an electric field that radiates outward in a 360-degree direction centered on the excitation wire 3 and around its axis. The electric field radiating outward in this 360-degree direction constitutes a virtual space barrier. The extended area of this virtual space barrier is also the warning range of the intelligent very low frequency induction perimeter provided by the present invention. That is, when a living body enters this area, the movement will cause a change in the voltage value converted from the change in the electric field intensity of the very low frequency virtual space barrier, and this voltage value is transmitted to the intrusion alarm device adapted to very low frequency induction, and then corresponding reactions are made.

[0033] The induction wire 2 is used to sense the information of the change in the very low frequency induction electric field intensity, convert the information of the change in the very low frequency induction electric field intensity into a voltage signal, and transmit this voltage signal to the intrusion alarm device adapted to very low frequency induction. The intrusion alarm device adapted to very low frequency induction is used to receive the voltage signal transmitted by the induction wire 2, and when the voltage value of this voltage signal is greater than a predetermined alarm voltage value, it controls the alarm module to work and emits an alarm signal.

[0034] During use, since living bodies in nature can all generate magnetic fields (caused by the flow of body fluids), when a human body enters the very low frequency induction electric field generated by the above-mentioned excitation wire 3, the induction electric field intensity sensed by the very low frequency induction wire 2 changes. Through the research and calculation of the changed very low frequency induction electric field intensity, it is possible to distinguish whether someone has invaded or attempted to invade the range of the very low frequency induction electric field generated by the excitation module, so as to achieve the biological induction function. Specifically as follows:

[0035] The device is powered on, and the green light of the dual-color self-check indicator flashes. It automatically enters the armed state within 10 seconds. If the red light of the dual-color indicator is on, it indicates a fault. The very low frequency induction electric field generated by the excitation wire 3 forms a three-dimensional space virtual barrier with a radius of 10 - 200 cm and 360 degrees at the top or on the wall of the fence. When a person approaches the warning range of the three-dimensional space virtual barrier within 1 - 2 seconds, voices such as "Danger! Unauthorized entry prohibited" are played and the warning lights flash for warning. If the person leaves, the voice playback ends, the warning lights automatically go out, and it enters the standby state. If the voice ends or the person continues to approach for more than 1 - 2 seconds, the warning lights keep flashing and a siren alarm sound of 70 - 100 decibels is emitted. The continuous alarm lasts for 10 - 60 seconds, then the voice automatically ends, the warning lights go out automatically, and it enters the standby state.

[0036] When the intelligent very low frequency induction perimeter is powered on and started, the adaptive very low frequency induction intrusion alarm device receives the voltage signal transmitted by the induction wire 2, and judges whether the voltage value of the received voltage signal is within the armed voltage range. When the voltage value of the voltage signal is within the said armed voltage range and is basically stable near a fixed voltage value within a predetermined time, record this fixed voltage value as the working voltage value. The above process is also called the arming process. This arming process will be started every time it is powered on and started, and its start time is within 10 seconds, that is, the intelligent very low frequency induction intrusion alarm detector described in the present invention can enter the normal warning state within 10 seconds of starting. If the voltage value received during power-on startup is within the said armed voltage range, it works normally. If it is not within this range, an alarm signal will be issued until the received voltage signal is within the armed voltage range. At this time, it may be that there is a fault in the alarm device or there is a living body in the very low frequency induction electric field area.

[0037] Although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent very low frequency sensing perimeter, characterized in that: The invention comprises a perimeter alarm intrusion detector (1), a sensing wire (2), an excitation wire (3), a chassis bracket (4), a pipe clamp bracket (5), a sensing sheath (6) and an excitation sheath (7), wherein a sensing sheath (6) and an excitation sheath (7) are arranged in sequence from top to bottom between the chassis bracket (4) and the pipe clamp bracket (5), the sensing sheath (6) and the excitation sheath (7) are arranged in parallel, the sensing sheath (6) is sleeved on the sensing wire (2), the excitation sheath (7) is sleeved on the excitation wire (3), the excitation wire (3) is used to generate a very low frequency induced electric field in space, the sensing wire (2) is used to sense the very low frequency induced electric field in space, and transmits an electric signal generated by disturbing the change of the very low frequency induced electric field in space to the perimeter alarm intrusion detector (1).

2. The intelligent very low frequency sensing perimeter according to claim 1, characterized in that: The perimeter alarm intrusion detector (1) comprises a chassis (16), an adaptive very low frequency induction intrusion alarm device, an anti-disassembly switch, a self-test indicator light (25), a voice device, an audible and visual alarm device, and a power supply. The chassis (16) is fixed below the chassis bracket (4). The adaptive very low frequency induction intrusion alarm device, the voice device, the audible and visual alarm device, and the power supply are all arranged inside the chassis (16). The anti-disassembly switch is installed inside the chassis (16), and the self-test indicator light (25) is installed on a panel of the chassis (16).

3. The intelligent very low frequency sensing perimeter according to claim 2, characterized in that: The chassis bracket (4) is provided with a pipe clamp one (8) and a pipe clamp two (9) in sequence from top to bottom, the pipe clamp bracket (5) is provided with a pipe clamp three (10) and a pipe clamp four (11) in sequence from top to bottom, the induction sleeve (6) is clamped on the pipe clamp one (8) and the pipe clamp three (10), and the excitation sleeve (7) is clamped on the pipe clamp two (9) and the pipe clamp four (11).

4. The intelligent very low frequency sensing perimeter according to claim 3, characterized in that: The induction sheath (6) comprises an induction sheath 1 (14) and an induction sheath 2 (15), the induction sheath 1 (14) and the induction sheath 2 (15) are respectively clamped on the pipe clamp 1 (8) and the pipe clamp 3 (10), the induction sheath 1 (14) is sleeved with a tee 1 (17), the tee 1 (17) is clamped on the pipe clamp 1 (8), the induction wire (2) comprises an induction wire 1 (12) and an induction wire 2 (13), the induction sheath 1 (14) and the induction sheath 2 (15) are respectively sleeved on the induction wire 1 (12) and the induction wire 2 (13).

5. The intelligent very low frequency sensing perimeter according to claim 4, characterized in that: The excitation sheath (7) comprises an excitation sheath 1 (20) and an excitation sheath 2 (21), the excitation sheath 1 (20) and the excitation sheath 2 (21) are respectively clamped on the pipe clamp 2 (9) and the pipe clamp 4 (11), the excitation sheath 1 (20) is sleeved with a tee 2 (22), the tee 2 (22) is clamped on the pipe clamp 2 (9), the excitation wire (3) comprises an excitation wire 1 (18) and an excitation wire 2 (19), the excitation sheath 1 (20) and the excitation sheath 2 (21) are respectively sleeved on the excitation wire 1 (18) and the excitation wire 2 (19).

6. The intelligent very low frequency induction perimeter according to claim 5, characterized in that: One end of the sensing wire 1 (12) and the sensing wire 2 (13) are suspended in the air, and the other ends of the sensing wire 1 (12) and the sensing wire 2 (13) are connected to the sensing wire lead through the three-way connection 1 (17), and the end of the sensing wire lead is connected to the adaptive very low frequency induction intrusion alarm device in the chassis (16).

7. The intelligent very low frequency induction perimeter according to claim 6, characterized in that: One end of the excitation wire 1 (18) and the excitation wire 2 (19) are suspended in the air, and the other ends of the excitation wire 1 (18) and the excitation wire 2 (19) are connected to the excitation wire lead through the tee 2 (22), and the end of the excitation wire lead is connected to the adaptive very low frequency induction intrusion alarm device in the chassis (16).

8. The intelligent very low frequency sensing perimeter according to claim 1, characterized in that: The bottoms of the chassis bracket (4) and the pipe clamp bracket (5) are respectively connected to a universal base 1 (23) and a universal base 2 (24).

9. The intelligent very low frequency sensing perimeter according to claim 1, characterized in that: Both the chassis bracket (4) and the pipe clamp bracket (5) are F-shaped structures.

10. The intelligent very low frequency induction perimeter according to claim 1, characterized in that: The number of both the chassis brackets (4) and the pipe clamp brackets (5) is an integer greater than or equal to 1.