Very-low-frequency induction intelligent seal
By designing a very low frequency induction smart seal, using the fair low frequency induction alarm device and wires to form a virtual space barrier, non-contact detection and alarm are achieved, the problem of easy damage of paper seals is solved and the seriousness and reliability of legal enforcement is improved.
Patent Information
- Application Number
- CN202420404628.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-01
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-03-01
AI Technical Summary
Existing paper seals are susceptible to damage and cannot be remedied in time, which affects the dignity and authority of the law.
A very low-frequency induction intelligent seal was designed, and the space surrounded by the case mask and the base plate was equipped with a fair-low frequency induction alarm device, induction wire, excitation wire, speaker and power supply, forming a 10-50cm virtual space barrier to realize contactless detection and alarm.
This smart seal can automatically warn when the human body is approaching, and multiple warnings are achieved through voice, sirens and light, ensuring that the reminder, warning and seizure of the seal are not affected by damage, and improving the seriousness and reliability of legal enforcement.
Smart Images

Figure CN222914338U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a very low frequency induction intelligent seal, belonging to the field of seals. Background Art
[0002] When power departments such as courts, procuratorates, public security departments, and fire departments enforce the seizure of immovable property or a company temporarily closes a certain office space or warehouse, the seal is used to seal the gate and it is not allowed to be used.
[0003] The currently used seals are mainly paper seals, and the seizure time, seizure reason, executing unit, official seal or signature and other contents are recorded on the seals, playing the roles of reminder, warning and seizure of the seal.
[0004] However, the paper seal is extremely vulnerable to natural or human factors and cannot be remedied in time, resulting in the seal being unable to achieve the functions of reminder, warning and seizure. If the paper seal used by the power department for seizure is damaged and not remedied in time, it will also affect the dignity and authority of the law. Content of the Utility Model
[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a very low frequency induction intelligent seal.
[0006] In order to achieve the above purpose, the utility model is realized through the following technical solutions:
[0007] A very low frequency induction intelligent seal includes a chassis face mask and a chassis bottom plate that is matched and connected with the chassis face mask. A very low frequency induction alarm device, as well as an induction wire, an excitation wire, a loudspeaker and a power supply that are connected to the very low frequency induction alarm device, are arranged in the space enclosed by the chassis face mask and the chassis bottom plate. An LED light strip and a self-check indicator lamp that are connected to the very low frequency induction alarm device are arranged on the outer surface of the chassis face mask.
[0008] Furthermore, threaded mounting holes are formed on the chassis bottom plate, and the chassis bottom plate is connected with the chassis face mask through the threaded mounting holes and self-tapping screws.
[0009] Furthermore, the chassis face mask is a light-transmitting chassis face mask, the chassis bottom plate is an insulating chassis bottom plate, and the self-check indicator lamp is a light-emitting diode.
[0010] Furthermore, the induction wire and the excitation wire are arranged in parallel. The excitation wire is used to generate a spatial very low frequency induction electric field; the induction wire is used to sense the spatial very low frequency induction electric field and transmit the electrical signal generated by the change of the disturbed spatial very low frequency induction electric field to the very low frequency induction alarm device.
[0011] Further, the length of the chassis face mask is 20 cm - 200 cm, the thickness is 1 cm - 100 cm, and the height is 2 cm - 100 cm.
[0012] Further, the diameters of the induction wire and the excitation wire are 0.1 mm - 100 mm.
[0013] Further, chassis fixing holes are provided on the chassis bottom plate, and the chassis bottom plate is connected to the chassis face mask through the chassis fixing holes and self-tapping screws arranged in the chassis fixing holes.
[0014] Further, the number of the LED light strips is two, and lamp beads are evenly arranged on the LED light strips.
[0015] Further, the induction wire and the excitation wire form a 360-degree very low frequency virtual space barrier with a radius of 10 cm - 50 cm around the chassis face mask 1.
[0016] Advantages of the present utility model:
[0017] The intelligent seal of the present application is adhesively installed on door locks, safes, security cabinets, filing cabinets, walls, etc. During specific use, when the power is turned on, the self-check indicator light flashes green, and it automatically enters the armed state within 10 seconds. If the red light of the dual-color indicator light is on, it indicates a fault.
[0018] The excitation wire and the induction wire generate a very low frequency induction electric field with the window lattice as the carrier, and form a 10 - 50 cm very low frequency virtual space barrier around the very low frequency induction intelligent seal.
[0019] When a person approaches the very low frequency virtual barrier space range of the very low frequency induction intelligent seal within 1 second - 2 seconds, the very low frequency induction intelligent seal gives an early warning, the speaker plays voice, the LED light strip flashes to illuminate the chassis face mask. There are "Judicial Seizure, Destruction is Illegal" on the chassis face mask, and a red "×" symbol is provided. The alarm process includes playing voice, emitting a police siren sound, and emitting light to achieve multiple warning effects.
[0020] If a person moves away from the seal, the voice playback ends, the LED light strip automatically turns off, and it enters the standby state; if the voice ends or the person continues to approach for a duration exceeding 2 seconds - 3 seconds, the LED light strip remains lit, and a police siren alarm sound is emitted. The continuous alarm automatically ends after 10 seconds - 60 seconds, the LED light strip automatically turns off, and it enters the standby state, realizing non-contact detection or alarm. Description of the Drawings
[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0022] Figure 1 The front view of a very low frequency induction intelligent seal of the present invention;
[0023] Figure 2 The schematic diagram of the chassis bottom plate of a very low frequency induction intelligent seal of the present invention.
[0024] In the figure: 1, chassis face mask; 2, chassis bottom plate; 3, very low frequency induction alarm device; 4, induction wire; 5, excitation wire; 6, LED light strip; 7, speaker; 8, power supply; 9, self-check indicator light; 10, threaded mounting hole; 11, chassis fixing hole. Specific embodiments
[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0026] Please refer to Figure 1-2 , a very low frequency induction intelligent seal, including a chassis face mask 1 and a chassis bottom plate 2 that is matched and connected to the chassis face mask 1. Inside the space enclosed by the chassis face mask 1 and the chassis bottom plate 2, there is a very low frequency induction alarm device 3, as well as an induction wire 4, an excitation wire 5, a speaker 7, and a power supply 8 that are connected to the very low frequency induction alarm device 3. On the outer surface of the chassis face mask 1, there are an LED light strip 6 and a self-check indicator light 9 that are connected to the very low frequency induction alarm device 3.
[0027] Refer to Figure 1-2 , threaded mounting holes 10 are opened on the chassis bottom plate 2. The chassis bottom plate 2 is connected to the chassis face mask 1 through the threaded mounting holes 10 and self-tapping screws. The chassis bottom plate 2 is fixedly connected to the chassis face mask 1 through the threaded mounting holes 10 and self-tapping screws, and subsequent disassembly is also relatively convenient.
[0028] Refer to Figure 1, the chassis face mask 1 is a light-transmitting chassis face mask, the chassis bottom plate 2 is an insulating chassis bottom plate, the self-check indicator light 9 is a light-emitting diode, and the chassis face mask 1 is made of acrylic light-transmitting material, belonging to a light-transmitting face mask. Therefore, during the warning process, the light transmission effect is better, and the warning effect is also better.
[0029] Refer to Figure 1-2 , the induction wire 4 is arranged in parallel with the excitation wire 5, and the excitation wire 5 is used to generate a space very low frequency induction electric field; the induction wire 4 is used to sense the space very low frequency induction electric field and transmit the electrical signal generated by the disturbance of the space very low frequency induction electric field change to the very low frequency induction alarm device 3. The length of the chassis face mask 1 is 20 cm - 200 cm, the thickness is 1 cm - 100 cm, and the height is 2 cm - 100 cm. The diameters of the induction wire 4 and the excitation wire 5 are 0.1 mm - 100 mm. The chassis bottom plate 2 is provided with chassis fixing holes 11, and the chassis bottom plate 2 is connected to the chassis face mask 1 through the chassis fixing holes 11 and self-tapping screws arranged in the chassis fixing holes 11.
[0030] Refer to Figure 1-2 , the number of the LED light strips 6 is two, and the lamp beads are evenly arranged on the LED light strips 6. The chassis fixing holes 11 on the chassis bottom plate 2 can cooperate with screws to fix the very low frequency induction intelligent seal.
[0031] Refer to Figure 1-2 , the induction wire 4 and the excitation wire 5 form a 360-degree very low frequency virtual space barrier with a radius of 10 cm - 50 cm around the chassis face mask 1.
[0032] During specific operation, the very low frequency induction intelligent seal of the present application is pasted and installed on door locks, safes, filing cabinets, document cabinets, walls, etc.
[0033] After the power is turned on, the self-check indicator light 9 flashes green, and automatically enters the armed state within ten seconds. If the red light of the dual-color indicator light is on, it indicates a fault.
[0034] The excitation wire and the induction wire generate a very low frequency induction electric field with the window lattice as the carrier, and form a 360-degree very low frequency virtual space barrier with a radius of 10 cm - 50 cm around the very low frequency induction intelligent seal.
[0035] When a person approaches the very low frequency virtual barrier space range of the very low frequency induction intelligent seal within 1 second - 2 seconds, the very low frequency induction intelligent seal gives an early warning, the speaker 7 plays voice, the LED light strip 6 flashes to illuminate the chassis face mask 1, and the words "Judicial Seizure, Destruction is Illegal" are provided on the chassis face mask, and a red "×" symbol is provided. The warning process includes playing voice, emitting a siren sound and emitting light to achieve multiple warning effects.
[0036] If the human body is far away from the seal, the voice playback ends, the LED light strip automatically turns off, and it enters the standby state; if the voice ends or the human body continues to approach for a duration exceeding 2 seconds - 3 seconds, the LED light strip remains continuously lit and emits a siren alarm sound. The continuous alarm automatically ends after 10 seconds - 60 seconds, the LED light strip automatically turns off, and it enters the standby state, achieving non-contact detection or alarm.
[0037] Although this specification is described according to the embodiments, not every embodiment contains only one 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. A very low frequency induction smart seal, characterized in that: The invention comprises a chassis mask (1) and a chassis bottom plate (2) matched with the chassis mask (1); a very low frequency induction alarm device (3) and an induction wire (4), an excitation wire (5), a loudspeaker (7) and a power supply (8) connected to the very low frequency induction alarm device (3) are arranged in the space enclosed by the chassis mask (1) and the chassis bottom plate (2); an LED light strip (6) and a self-test indicator light (9) connected to the very low frequency induction alarm device (3) are arranged on the outer surface of the chassis mask (1).
2. A very low frequency induction smart seal according to claim 1, characterized in that: The chassis bottom plate (2) is provided with a threaded mounting hole (10), and the chassis bottom plate (2) is connected to the chassis cover (1) through the threaded mounting hole (10) and self-tapping screws.
3. A very low frequency induction smart seal according to claim 2, characterized in that: The chassis mask (1) is a light-transmitting chassis mask, the chassis bottom plate (2) is an insulating chassis bottom plate, and the self-test indicator light (9) is a light-emitting diode.
4. A very low frequency induction smart seal according to claim 3, characterized in that: The induction wire (4) is arranged in parallel with the excitation wire (5), and the excitation wire (5) is used to generate a spatial very low frequency induced electric field; The induction wire (4) is used to sense the very low frequency induction electric field in the space, and transmit the electric signal generated by disturbing the change of the very low frequency induction electric field in the space to the very low frequency induction alarm device (3).
5. A very low frequency induction smart seal according to claim 4, characterized in that: The chassis cover (1) has a length of 20 cm to 200 cm, a thickness of 1 cm to 100 cm, and a height of 2 cm to 100 cm.
6. A very low frequency induction smart seal according to claim 5, characterized in that: The diameters of the sensing wire (4) and the excitation wire (5) are 0.1 mm-100 cm.
7. A very low frequency induction smart seal according to claim 6, characterized in that: The chassis bottom plate (2) is provided with a chassis fixing hole (11), and the chassis bottom plate (2) is connected to the chassis cover (1) via the chassis fixing hole (11) and a self-tapping screw provided in the chassis fixing hole (11).
8. The VLF induction smart seal according to claim 7, characterized in that: The number of the LED light strips (6) is two, and lamp beads are evenly arranged on the LED light strips (6).
9. A very low frequency induction smart seal according to claim 8, characterized in that: The induction wire (4) and the excitation wire (5) form a 360-degree very low frequency virtual space barrier with a radius of 10 cm-50 cm around the chassis mask (1).