Anti-escape system for prison
By installing undercarriage scanning devices and opening/closing mechanisms at prison gates A and B, the limitations of the prison's undercarriage scanning system and the problem of dust pollution were solved, enabling full-process monitoring and security alarms, and improving the prison's ability to prevent escape.
Patent Information
- Application Number
- CN202423276547.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing vehicle under-vehicle scanning systems in prisons have limitations when installed alone at either gate A or gate B, failing to effectively prevent escape attempts by hidden individuals. Furthermore, the cameras are susceptible to dust contamination, which affects image quality.
Vehicle-mounted scanning devices, including a base, a frame, a vehicle-mounted scanner, and a thermal imager, are installed at both A and B gates of the prison. A baffle with an opening and closing mechanism is provided to protect the lens. Combined with AI recognition and real-time monitoring by the control center, dual detection and information transmission are achieved.
It enables full-process monitoring of vehicles entering and leaving the prison, improving security, preventing covert activities, ensuring image quality and timely alarms, and ensuring secure data transmission.
Smart Images

Figure CN223857420U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the security device technical field of prison and confidential place, concretely is a prison escape prevention system. BACKGROUND
[0002] AB door has double door interlocking function, its function is when A door opens, B door cannot open, only when A door closes, B door can open, contrarily B door opens, A door cannot open, usually applies in the entrance and exit of bank, prison, treasury and the like important place, combines digital management system,
[0003] For the AB door of prison, in order to prevent the emergence personnel stowage situation, the prior art will install vehicle bottom scanning system near the door, but still has the following defects:
[0004] 1, the current installation scheme usually only installs separately in A door or B door, there is certain limitation, if only installs in A door, leads to the vehicle into the inspection area, the hidden personnel can take the opportunity to enter the inspection area, and then penetrates to the inside of prison, if only installs in B door, leads to the hidden personnel can hide in the vehicle bottom, passes through the inspection area and directly leads to the outside world;
[0005] 2, the current vehicle bottom scanning system is realized through camera, since camera is exposed to the outside world for a long time, its lens surface will adhere to more dust, thereby leading to the image quality of shooting is poor. UTILITY MODEL CONTENTS
[0006] The utility model aims at providing a prison escape prevention system to solve the problems in the above background.
[0007] To achieve the above object, the utility model provides the following technical scheme:
[0008] A prison escape prevention system, including two vehicle bottom scanning devices, two vehicle bottom scanning devices are installed in prison A door and prison B door respectively, the vehicle bottom scanning device includes base, pedestal, vehicle bottom scanning appearance, thermal imager and baffle, the pedestal is fixedly installed in the inside of base, the vehicle bottom scanning appearance and thermal imager are installed in the top of pedestal, two baffles are slidably connected in the top of base and cover in the top of vehicle bottom scanning appearance and thermal imager, two baffles are provided with opening and closing mechanism between base, two baffles can be driven away from each other or each other by opening and closing mechanism.
[0009] Preferably, the opening and closing mechanism includes a cylinder, a traction seat, connecting arms, and guide rods. The cylinder is horizontally installed inside the base, the traction seat is fixedly installed at the output end of the cylinder, and the traction seat is slidably connected to the inside of the base through a first guide structure. One end of each of the two connecting arms is hinged to the inside of the traction seat, and the other end of each of the two connecting arms is rotatably connected to the surface of the two guide rods. The two guide rods are vertically fixedly connected to the bottom of the two baffles.
[0010] Preferably, the guide rod is slidably connected to the inside of the base through a second guide structure. The inside of the base is provided with a through groove, and a traction plate is horizontally slidably installed inside the through groove through an elastic structure. An audible and visual alarm light is installed on the surface of the traction plate.
[0011] Preferably, the first guide structure includes a first track and a first T-shaped groove. The first T-shaped groove is disposed at the bottom of the traction seat, the first track is fixedly installed inside the base, and the traction seat is slidably connected to the surface of the first track through the first T-shaped groove.
[0012] Preferably, the second guide structure includes a second track and a second T-shaped groove. The second T-shaped groove is disposed at the bottom of the guide rod, and the second track is installed inside the through groove. The guide rod is slidably connected to the surface of the second track through the second T-shaped groove.
[0013] Preferably, the traction plate is slidably connected to the surface of the second track, the elastic structure includes a limiting rod and a spring, the limiting rod is horizontally fixedly connected to the inner wall of the through groove, the traction plate is slidably connected to the surface of the limiting rod, the spring is fixedly connected between the traction plate and the through groove, and the spring is sleeved on the surface of the limiting rod.
[0014] Preferably, both sides of the base are fixedly connected with slopes.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This invention utilizes a dual-deployment vehicle under-scanning device at both the A and B gates of the prison. By employing a thermal imager and a vehicle under-scanner, it accurately detects the underside of vehicles entering and exiting the prison, comprehensively improving the security of vehicles entering and exiting the prison. This enables full-process monitoring of vehicles from the entrance to the exit, preventing security loopholes in the inspection area and effectively blocking hidden behaviors.
[0017] 2. This device has two baffles that are movably set on the top of the base through an opening and closing mechanism. Under normal circumstances, the two baffles are in a closed state, which can shield the undercarriage scanner and thermal imager to prevent dust from falling on the lens surface, thereby preventing dust from affecting the image quality. When a vehicle enters or exits, the opening and closing mechanism can drive the two baffles to open, exposing the undercarriage scanner and thermal imager from inside the base, so as to facilitate the inspection of the undercarriage. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the baffle after it is opened.
[0020] Figure 3 This is a schematic diagram of the internal structure of the base of this utility model;
[0021] Figure 4 This is a schematic diagram of the connection structure between the connecting arm and the baffle of this utility model;
[0022] Figure 5 This utility model Figure 3 A magnified structural diagram of area A in the middle.
[0023] In the diagram: 1. Base; 2. Base plate; 3. Undercarriage scanner; 4. Thermal imager; 5. Baffle; 6. Cylinder; 7. Traction seat; 8. Connecting arm; 9. Guide rod; 10. Through groove; 11. Traction plate; 12. Audible and visual alarm light; 13. First track; 14. First T-shaped slide; 15. Second track; 16. Second T-shaped slide; 17. Limiting rod; 18. Spring; 19. Slope. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1-5This utility model provides a prison escape prevention system, including two undercarriage scanning devices. The two undercarriage scanning devices are respectively installed at prison gate A and prison gate B. The undercarriage scanning device includes a base 1, a base 2, an undercarriage scanner 3, a thermal imager 4, and baffles 5. The base 2 is fixedly installed inside the base 1. The undercarriage scanner 3 and the thermal imager 4 are installed on the top of the base 2. The two baffles 5 are slidably connected to the top of the base 1 and cover the top of the undercarriage scanner 3 and the thermal imager 4. An opening and closing mechanism is provided between the two baffles 5 and the base 1. The two baffles 5 can move away from each other or move closer to each other under the drive of the opening and closing mechanism.
[0026] Please see Figure 1 and 2 Under normal circumstances, the two baffles 5 are closed, shielding the undercarriage scanner 3 and thermal imager 4 to prevent dust from falling onto the lens surface. When a vehicle enters or exits, the opening and closing mechanism drives the two baffles 5 to open, exposing the undercarriage scanner 3 and thermal imager 4 from the base 1. To further improve the detection effect, in this embodiment, the undercarriage scanner 3 and thermal imager 4 in both undercarriage scanning devices are connected to the control center via wired or wireless network to transmit undercarriage images and thermal imaging data in real time. The control center receives the undercarriage scan images transmitted from prison gate A and prison gate B. Through analysis and comparison, the system uses AI recognition algorithms to analyze image content and detect the presence of hidden personnel. If the control center identifies hidden personnel or other anomalies, the system will immediately trigger an alarm, prompting security personnel to arrive at the scene. Simultaneously, it will automatically lock prison gates A and B to prevent vehicles from leaving. The control center can display the image data and analysis results of all under-vehicle scanning devices on a real-time monitoring screen, and store all scanning data, alarm records, and vehicle entry and exit records for later query, auditing, and analysis. Users can also query historical scan images, alarm records, and vehicle passage information.
[0027] It should be noted that all data transmissions from the undercarriage scanning devices at Prison Gate A and Prison Gate B are encrypted to ensure information security.
[0028] The tensioning mechanism includes a cylinder 6, a traction seat 7, connecting arms 8, and guide rods 9. The cylinder 6 is horizontally installed inside the base 1. The traction seat 7 is fixedly installed at the output end of the cylinder 6. The traction seat 7 is slidably connected to the inside of the base 1 through a first guide structure. One end of each of the two connecting arms 8 is hinged to the inside of the traction seat 7. The other end of each of the two connecting arms 8 is rotatably connected to the surface of the two guide rods 9. The two guide rods 9 are vertically fixedly connected to the bottom of the two baffles 5. The first guide structure includes a first track 13 and a first T-shaped groove 14. The first T-shaped groove 14 is located at the bottom of the traction seat 7. The first track 13 is fixedly installed inside the base 1. The traction seat 7 is slidably connected to the surface of the first track 13 through the first T-shaped groove 14.
[0029] The guide rod 9 is slidably connected to the inside of the base 1 through the second guide structure. The inside of the base 1 is provided with a through groove 10. A traction plate 11 is horizontally slidably installed inside the through groove 10 through an elastic structure. An audible and visual alarm light 12 is installed on the surface of the traction plate 11. The second guide structure includes a second track 15 and a second T-shaped slide groove 16. The second T-shaped slide groove 16 is provided at the bottom of the guide rod 9. The second track 15 is installed inside the through groove 10. The guide rod 9 is slidably connected to the surface of the second track 15 through the second T-shaped slide groove 16.
[0030] Please see Figure 3 and 4 The cylinder 6 drives the traction seat 7 to move linearly on the surface of the first track 13. When the traction seat 7 moves, it drives one end of the connecting arm 8 to move synchronously. Since the overall length of the connecting arm 8 is fixed, the other end of the connecting arm 8 can drive the guide rod 9 to move linearly on the surface of the second track 15. The two guide rods 9 can drive the baffle 5 to move away from the base 1. Since the two connecting arms 8 move symmetrically, the two baffles 5 can move away from each other, thereby exposing the undercarriage scanner 3 and the thermal imager 4 to scan the undercarriage. For the connection part between the connecting arm 8 and the guide rod 9, the connecting arm 8 can move linearly inside the through groove 10 under the guidance of the second track 15 and the second T-shaped slide 16. The connecting arm 8 can push the traction plate 11 and the sound and light alarm lamp 12 on its surface to move towards the outside until a part of the sound and light alarm lamp 12 extends to the outside, so that the sound and light alarm lamp 12 can provide sound and light alarm at any time. When the sound and light alarm lamp 12 is inside the through groove 10, it can be protected by the base 1 and the baffle 5, which greatly improves its service life.
[0031] It should be noted that the first guide structure and the second guide structure are used to guide the traction seat 7 and the guide rod 9, respectively, so that the traction seat 7 and the baffle 5 can move in a straight line.
[0032] The traction plate 11 is slidably connected to the surface of the second track 15. The elastic structure includes a limiting rod 17 and a spring 18. The limiting rod 17 is horizontally fixedly connected to the inner wall of the through groove 10. The traction plate 11 is slidably connected to the surface of the limiting rod 17. The spring 18 is fixedly connected between the traction plate 11 and the through groove 10, and the spring 18 is sleeved on the surface of the limiting rod 17.
[0033] Please see Figure 3 and 5When the traction plate 11 is pushed by one end of the connecting arm 8, it can move to the outside of the through groove 10. At this time, the traction plate 11 can slide on the surface of the limit rod 17. The traction plate 11 and the through groove 10 can compress the spring 18 to store energy. When the baffle 5 is reset, one end of the connecting arm 8 will also be reset. At this time, the traction plate 11 loses the push of the connecting arm 8. The spring 18 can drive the traction plate 11 and the sound and light alarm light 12 on its surface to reset under its own elastic force.
[0034] Both sides of the base 1 are fixedly connected with slopes 19.
[0035] Please see Figure 1 and 2 The slope 19 is designed to allow the car to pass over the base 1. At this time, the slope 19 can lift the car a certain distance so that the undercarriage scanner 3 and thermal imager 4 can scan the undercarriage normally. It also allows the whole unit to be installed directly on the ground without the need for slotting in the ground.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A prison escape prevention system characterized by: The application discloses a vehicle bottom scanning device for prison.
2. A prison escape prevention system according to claim 1, characterized in that: The opening and closing mechanism comprises a cylinder (6), a traction base (7), a connecting arm (8) and a guide rod (9), the cylinder (6) is horizontally installed in the inside of the base (1), the traction base (7) is fixedly installed at the output end of the cylinder (6), the traction base (7) is slidably connected to the inside of the base (1) through a first guide structure, one end of each of the two connecting arms (8) is hingedly connected to the inside of the traction base (7), the other end of each of the two connecting arms (8) is rotatably connected to the surface of the two guide rods (9) respectively, and the two guide rods (9) are vertically and fixedly connected to the bottom of the two baffle plates (5) respectively.
3. A prison escape prevention system according to claim 2, characterised in that: The guide rod (9) is slidably connected to the inside of the base (1) through a second guide structure, the inside of the base (1) is provided with a through groove (10), the traction plate (11) is horizontally and slidably installed in the inside of the through groove (10) through an elastic structure, and the surface of the traction plate (11) is provided with a sound-light alarm lamp (12).
4. A prison escape prevention system according to claim 2, characterized in that: The first guide structure comprises a first track (13) and a first T-shaped sliding groove (14), the first T-shaped sliding groove (14) is arranged at the bottom of the traction base (7), and the first track (13) is fixedly installed in the inside of the base (1).
5. A prison escape prevention system according to claim 3, wherein: The second guide structure comprises a second track (15) and a second T-shaped sliding groove (16), the second T-shaped sliding groove (16) is arranged at the bottom of the guide rod (9), the second track (15) is installed in the inside of the through groove (10), and the guide rod (9) is slidably connected to the surface of the second track (15) through the second T-shaped sliding groove (16).
6. A prison escape prevention system according to claim 5, characterised in that: The traction plate (11) is slidably connected to the surface of the second track (15), the elastic structure comprises a limiting rod (17) and a spring (18), the limiting rod (17) is horizontally and fixedly connected to the inner wall of the through groove (10), the traction plate (11) is slidably connected to the surface of the limiting rod (17), the spring (18) is fixedly connected between the traction plate (11) and the through groove (10), and the spring (18) is sleeved on the surface of the limiting rod (17).
7. A prison escape prevention system according to claim 1, characterized in that: The two side surfaces of the base (1) are fixedly connected with slope surfaces (19).