Personnel intrusion alarm system in protection area

Abstract

The utility model relates to the technical field of radiation environment monitoring, and discloses a protection area personnel intrusion alarm system, which comprises an installation shell fixed in a protection area, and an intrusion detection assembly and an alarm assembly are installed in the installation shell. A detection opening is formed in the mounting shell, and a transparent plate for protecting the detection head is fixedly arranged at the detection opening; a moving block is slidably mounted on the mounting shell; a supporting rod is fixedly arranged on the moving block; a cleaning plate is slidably mounted on the supporting rod and is in sliding contact with the transparent plate; a power mechanism is mounted on the mounting shell and is in transmission connection with the moving block; and a shaking piece is arranged on the supporting rod, is in transmission connection with the cleaning plate and is in transmission fit with the supporting rod through a linkage piece. Dust on the cleaning plate can be shaken off through the shaking piece, and therefore it can be guaranteed that when the dust on the transparent plate is cleaned again, the dust is thoroughly cleaned, the cleaning effect is improved, maintenance personnel do not need to manually clean the cleaning plate, and the maintenance personnel are effectively prevented from being damaged by radiation.

Description

Technical Field

[0001] This utility model relates to the field of radiation environment monitoring technology, and in particular to a personnel intrusion alarm system for protected areas. Background Technology

[0002] In industrial environments, exposure to ionizing radiation primarily originates from medical equipment, radioactive material handling, and the nuclear industry. Ionizing radiation can penetrate matter and damage human cells, therefore it must be strictly controlled and managed. To prevent unauthorized entry into protected areas, an intrusion alarm system for these areas is needed.

[0003] The anti-theft and intrusion alarm described in announcement number CN220189066U includes a protective housing. A transparent plate is provided on the front surface of the protective housing. Two brackets are fixedly installed on the front surface of the protective housing. A threaded screw is movably inserted between opposite sides of the two brackets. A motor is installed at one end of the outer wall of the threaded screw. The outer wall of the threaded screw is threadedly connected to a slider. A cleaning plate is fixedly installed at the bottom end of the slider. When dust or debris falls on the surface of the transparent plate and interferes with the infrared radiation emitted by the alarm, the motor drives the threaded screw to rotate. The threaded screw causes the cleaning plate to slide on the surface of the transparent plate. During the sliding process, the cleaning plate scrapes off the dust or debris from the surface of the transparent plate, thus preventing interference with the infrared radiation emitted by the alarm and improving the accuracy of the alarm.

[0004] Based on the above technical features, the problem is that when the existing alarm is in use, after the cleaning plate cleans the dust on the transparent plate, dust easily accumulates on the cleaning plate, which leads to incomplete dust removal and reduced cleaning effect when cleaning the transparent plate again. As a result, maintenance personnel need to clean the cleaning plate frequently in short cycles. However, the protected area is in a radiation environment, which can easily cause harm to maintenance personnel.

[0005] Therefore, it is necessary to solve the above problems by using a protected area intrusion alarm system. Utility Model Content

[0006] The purpose of this invention is to provide a personnel intrusion alarm system for protected areas to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a personnel intrusion alarm system for a protected area, comprising a mounting shell fixed in the protected area, an intrusion detection component and an alarm component installed inside the mounting shell; a detection port is opened on the mounting shell, the probe of the intrusion detection component faces the detection port, and a transparent plate is fixedly installed at the detection port to protect the probe; a movable block is slidably mounted on the mounting shell, and a support rod is fixedly mounted on the movable block; a cleaning plate is slidably mounted on the support rod, and the cleaning plate slides in contact with the transparent plate; a power mechanism is mounted on the mounting shell, and the power mechanism is driven and connected to the movable block; a vibrating component is provided on the support rod, which is both driven and connected to the cleaning plate and drives the cleaning plate to slide up and down along the axial direction of the support rod through a linkage component.

[0008] Preferably, the vibrating component includes a slide rod, and the cleaning plate is fixedly connected to the slide rod; the slide rod is parallel to the support rod and slides in a limiting manner with the support rod, and a spring is sleeved on the slide rod; one end of the spring is fixedly connected to the cleaning plate, and the other end is fixedly connected to the support rod.

[0009] Preferably, the linkage includes a rotating shaft, which is perpendicular to the slide rod and rotatably connected to the support rod; a protrusion is fixedly provided on the rotating shaft, and the protrusion is in contact with the end of the slide rod away from the cleaning plate for transmission cooperation; two racks are provided on the mounting shell along the sliding direction of the moving block, and the transparent plate is located between the two racks; a gear is fixedly sleeved on the rotating shaft, and the gear is in contact with the two racks for meshing cooperation.

[0010] Preferably, the power mechanism includes a motor and a threaded rod; two mounting seats are fixedly disposed on the mounting housing, and the threaded rod is placed horizontally between the two mounting seats and rotatably connected to the two mounting seats; the motor is fixedly mounted on one of the mounting seats, and the output shaft of the motor is coaxially fixedly connected to the threaded rod; the threaded rod passes through the moving block and is threadedly connected to the moving block, and the moving block is limited and slidably engaged with the mounting housing.

[0011] Preferably, a microcomputer is fixedly installed inside the mounting housing, and the microcomputer is electrically connected to a motor; a solar panel is installed on the mounting housing, and the solar panel is electrically connected to the microcomputer.

[0012] Preferably, the intrusion detection assembly includes a sensor, which is fixed inside the mounting housing with its probe facing the detection port; the sensor is connected to a microelectromechanical system (MEMS).

[0013] Preferably, the alarm assembly includes a warning light and a buzzer; the warning light is fixed to the outside of the mounting housing, and the buzzer is fixed to the inside of the mounting housing; both the warning light and the buzzer are connected to a microelectromechanical system (MEMS).

[0014] The technical effects and advantages of this utility model are as follows: This utility model can shake off the dust on the cleaning plate by the shaking component, which can not only ensure that the dust on the transparent plate is thoroughly cleaned when cleaning it again, thus improving the cleaning effect, but also eliminate the need for maintenance personnel to manually clean the cleaning plate, effectively preventing maintenance personnel from being harmed by radiation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the interior of the mounting shell of this utility model;

[0017] Figure 3 This is a schematic diagram of the vibration component of this utility model.

[0018] In the diagram: 1. Mounting housing; 2. Sensor; 3. Buzzer; 4. Warning light; 5. Solar panel; 6. Transparent plate; 7. Mounting base; 8. Motor; 9. Threaded rod; 10. Moving block; 11. Support rod; 12. Cleaning plate; 13. Shaft; 14. Protrusion; 15. Gear; 16. Rack; 17. Slide rod; 18. Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides, for example Figures 1 to 3 The illustrated personnel intrusion alarm system for a protected area includes a mounting housing 1 fixed in the protected area. A microcomputer, an intrusion detection component, and an alarm component are fixedly installed inside the mounting housing 1. A solar panel 5 is fixedly installed on the top of the mounting housing 1, and the solar panel 5 is connected to the microcomputer to power the entire system.

[0021] The intrusion detection assembly includes a sensor 2, which is fixed inside the mounting housing 1 and connected to a microelectromechanical system (MEMS). In this embodiment, the sensor 2 may be an infrared sensor, a microwave sensor, or a laser sensor, etc. A detection port is provided on the front side of the mounting housing 1, and the probe of the sensor 2 faces the detection port. A transparent plate 6 is fixedly installed at the detection port to protect the probe.

[0022] The alarm assembly includes a warning light 4 and a buzzer 3. The warning light 4 is fixed to the top outer wall of the mounting housing 1, and the buzzer 3 is fixed inside the mounting housing 1. Both the warning light 4 and the buzzer 3 are connected to a microelectromechanical system (MEMS). A sound outlet is provided on the side of the mounting housing 1.

[0023] A movable block 10 is slidably mounted on the front outer wall of the mounting housing 1. The movable block 10 is driven by a power mechanism mounted on the mounting housing 1. The power mechanism includes a motor 8 and a threaded rod 9.

[0024] Two mounting seats 7 are fixedly installed on the front outer wall of the mounting housing 1. A threaded rod 9 is horizontally positioned between the two mounting seats 7 and rotatably connected to them. A motor 8 is fixedly installed on one of the mounting seats 7, and the output shaft of the motor 8 is coaxially and fixedly connected to the threaded rod 9. The microelectromechanical system (MEMS) connects to the motor 8.

[0025] The threaded rod 9 passes through the movable block 10 and is threadedly connected to the movable block 10. The movable block 10 is in a limited sliding fit with the mounting shell 1.

[0026] The movable block 10 is located above the transparent plate 6, and a support rod 11 is vertically mounted at the bottom of the movable block 10. The top end of the support rod 11 is fixedly connected to the movable block 10. A T-shaped slider is fixedly mounted at the bottom end of the support rod 11. A groove matching the T-shaped slider is formed on the front outer wall of the mounting shell 1, and the T-shaped slider slides in a limited manner with the groove. The T-shaped slider and the groove are not shown in the figure, and are used for limiting the support rod 11 and stabilizing its sliding. The transparent plate 6 is located between the movable block 10 and the T-shaped slider.

[0027] A cleaning plate 12 is mounted on the support rod 11. The cleaning plate 12 slides in contact with the transparent plate 6 and the front outer wall of the mounting shell 1 to clean dust adhering to the transparent plate 6. The end of the cleaning plate 12 away from the front outer wall of the mounting shell 1 is slidably sleeved on the support rod 11. A vibrating element is provided on the support rod 11. The vibrating element is both connected to the cleaning plate 12 and drives the cleaning plate 12 to slide up and down along the axial direction of the support rod 11 through a linkage.

[0028] The vibrating component includes a slide rod 17. A mounting cavity and two sliding cavities are symmetrically arranged, one above the other, both located below the mounting cavity. A slide rod 17 is coaxially arranged within each of the two sliding cavities, with the cleaning plate 12 positioned between the two slide rods 17. Connecting blocks are fixedly installed at the ends of both slide rods 17 near the cleaning plate 12, and all connecting blocks extend through the support rod 11 and are fixedly connected to the cleaning plate 12. A clearance groove is axially formed on the support rod 11 for the connecting blocks to slide, and the clearance groove communicates with the corresponding sliding cavity.

[0029] The top end of the upper slide rod 17 is inserted into the mounting cavity, and the bottom end of the lower slide rod 17 is inserted into the support rod 11. Both slide rods 17 are in a limited sliding engagement with the support rod 11.

[0030] A spring 18 is installed in each of the two sliding cavities, and each spring 18 is sleeved on the sliding rod 17 in its respective sliding cavity. The end of each spring 18 near the cleaning plate 12 is fixedly connected to the connecting block connected to the cleaning plate 12, and the end of each spring 18 away from the cleaning plate 12 is fixedly connected to the support rod 11.

[0031] The linkage includes a rotating shaft 13, which is horizontally positioned along the front-to-back direction. The rotating shaft 13 is perpendicular to the slide rod 17 and rotatably connected to the support rod 11. The front end of the rotating shaft 13 passes into the mounting cavity of the support rod 11. A protrusion 14 is provided within the mounting cavity and is fixed to the rotating shaft 13. The protrusion 14 revolves around the central axis of the rotating shaft 13. The top end of the slide rod 17, located above it, is positioned below the protrusion 14, and the protrusion 14 and the top end of the slide rod 17 engage in a contact-type transmission cooperation.

[0032] In this embodiment, the protrusion 14 is provided with a transmission ramp and a straight surface, which are connected. The straight surface is arranged radially along the rotating shaft 13, and the transmission ramp is inclined circumferentially along the rotating shaft 13. The top end of the upper slide rod 17 slides and contacts the transmission ramp.

[0033] Two racks 16 are arranged on the mounting housing 1 along the sliding direction of the moving block 10, and the transparent plate 6 is located between the two racks 16. A gear 15 is fixedly sleeved at the rear end of the rotating shaft 13, and the gear 15 is in contact meshing with the two racks 16.

[0034] In this embodiment, the gear 15 is mounted on the rotating shaft 13 via a one-way bearing. The inner ring of the one-way bearing is fixedly sleeved on the rotating shaft 13, and the gear 15 is fixedly sleeved on the outer ring of the one-way bearing.

[0035] Working principle: When a person accidentally enters the protected area, the sensor 2's probe detects the intruder. Sensor 2 then transmits the signal to the microcomputer, which processes the signal and controls the warning light 4 to flash, while simultaneously controlling the buzzer 3 to sound, to alert the intruder that they have entered the radiation zone.

[0036] When it is necessary to clean the dust adhering to the transparent plate 6, the motor 8 can be remotely controlled to start via the communication function of the microcomputer. The output shaft of the motor 8 rotates and drives the threaded rod 9 to rotate, which pushes the moving block 10 to slide horizontally from left to right. The moving block 10 drives the support rod 11 to move synchronously, and the support rod 11 drives the rotating shaft 13 to move synchronously. The rotating shaft 13 drives the gear 15 to move horizontally.

[0037] When gear 15 contacts rack 16 on the left, rack 16 pushes gear 15 to rotate. Gear 15 drives shaft 13 to rotate, and shaft 13 drives protrusion 14 to rotate. When protrusion 14 contacts the top of corresponding slide rod 17, protrusion 14 pushes corresponding slide rod 17 down, and slide rod 17 pushes cleaning plate 12 to slide downward. At this time, spring 18 above is stretched, and spring 18 below is compressed.

[0038] After the protrusion 14 disengages from the top of the corresponding slide bar 17, the cleaning plate 12 slides upward under the elastic force of the spring 18. At this time, due to inertia, the dust attached to the cleaning plate 12 is shaken off. Subsequently, under the alternating action of the gravity of the cleaning plate 12 and the elastic force of the spring 18, the cleaning plate 12 shakes up and down, and the dust attached to the cleaning plate 12 is shaken off.

[0039] As the moving block 10 continues to slide, the gear 15 disengages from the rack 16 located on the left. Then, the cleaning plate 12 stops shaking after moving a certain distance, and then the cleaning plate 12 contacts the transparent plate 6 and cleans away the dust attached to the transparent plate 6.

[0040] The moving block 10 then continues to slide, and after sliding a certain distance, the gear 15 engages with the rack 16 located on the right. At this time, the cleaning plate 12 vibrates again, shaking off the dust cleaned from the transparent plate 6. When the gear 15 disengages from the rack 16 on the right, the output shaft of the motor 8 reverses.

[0041] Subsequently, the movable block 10 slides horizontally from right to left, and the rotating shaft 13 drives the gear 15 to move synchronously. When the gear 15 contacts the two racks 16, the gear 15 drives the outer ring of the one-way bearing to rotate freely, and the rotating shaft 13 does not rotate. When the movable block 10 slides to the initial position on the right, the motor 8 stops.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A personnel intrusion alarm system for a protected area, comprising a mounting housing (1) fixed in the protected area, characterized in that: An intrusion detection component and an alarm component are installed inside the mounting housing (1). A detection port is opened on the mounting housing (1), and the probe of the intrusion detection component faces the detection port. At the same time, a transparent plate (6) for protecting the probe is fixedly installed at the detection port. A moving block (10) is slidably installed on the mounting housing (1), and a support rod (11) is fixedly installed on the moving block (10). A cleaning plate (12) is slidably installed on the support rod (11), and the cleaning plate (12) is in sliding contact with the transparent plate (6). A power mechanism is installed on the mounting housing (1), and the power mechanism is connected to the moving block (10) through transmission. A shaking component is provided on the support rod (11), which is connected to the cleaning plate (12) through transmission and also cooperates with the support rod (11) through a linkage component to drive the cleaning plate (12) to slide up and down along the axial direction of the support rod (11).

2. The personnel intrusion alarm system for a protected area according to claim 1, characterized in that: The vibrating component includes a slide rod (17), and the cleaning plate (12) is fixedly connected to the slide rod (17); the slide rod (17) is parallel to the support rod (11) and is in a limiting sliding fit with the support rod (11); a spring (18) is sleeved on the slide rod (17); one end of the spring (18) is fixedly connected to the cleaning plate (12), and the other end is fixedly connected to the support rod (11).

3. The personnel intrusion alarm system for a protected area according to claim 2, characterized in that: The linkage includes a rotating shaft (13), which is perpendicular to the slide rod (17) and rotatably connected to the support rod (11); a protrusion (14) is fixedly provided on the rotating shaft (13), and the protrusion (14) and the end of the slide rod (17) away from the cleaning plate (12) are in contact transmission cooperation; two racks (16) are provided on the mounting shell (1) along the sliding direction of the moving block (10), and the transparent plate (6) is located between the two racks (16); a gear (15) is fixedly sleeved on the rotating shaft (13), and the gear (15) is in contact meshing cooperation with the two racks (16).

4. The personnel intrusion alarm system for a protected area according to claim 1, characterized in that: The power mechanism includes a motor (8) and a threaded rod (9); two mounting seats (7) are fixedly installed on the mounting shell (1), and the threaded rod (9) is horizontally placed between the two mounting seats (7) and rotatably connected to the two mounting seats (7); the motor (8) is fixedly installed on one of the mounting seats (7), and the output shaft of the motor (8) is coaxially fixedly connected to the threaded rod (9); the threaded rod (9) passes through the moving block (10) and is threadedly connected to the moving block (10), and the moving block (10) is limited and slidably engaged with the mounting shell (1).

5. The personnel intrusion alarm system for a protected area according to claim 4, characterized in that: The microcomputer is fixedly installed inside the mounting shell (1), and the microcomputer is connected to the motor (8); a solar panel (5) is installed on the mounting shell (1), and the solar panel (5) is connected to the microcomputer.

6. The personnel intrusion alarm system for a protected area according to claim 4, characterized in that: The intrusion detection assembly includes a sensor (2), which is fixed inside the mounting housing (1) with the probe facing the detection port; the sensor (2) is connected to a microelectromechanical system (MEMS).

7. The personnel intrusion alarm system for a protected area according to claim 4, characterized in that: The alarm assembly includes a warning light (4) and a buzzer (3); the warning light (4) is fixed to the outside of the mounting housing (1), and the buzzer (3) is fixed to the inside of the mounting housing (1); both the warning light (4) and the buzzer (3) are connected to a microelectromechanical system (MEMS).

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