Anti-following three-roller gate
By designing an anti-tailgating tripod turnstile, the double doors are controlled by a card reader, induction motor, and infrared sensor. Combined with facial recognition and timed detection, the problem of insufficient protection of tripod turnstiles is solved, enabling users to pass through in a standardized and efficient manner.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN WEITAI ELECTROMECHANICAL EQUIP CO LTD
- Filing Date
- 2024-02-23
- Publication Date
- 2026-06-12
AI Technical Summary
The existing tripod turnstiles have insufficient protection. Most people can crawl under the turnstiles, climb over them, or follow users who are passing through normally, causing losses to users.
The turnstile features an anti-tailgating design, comprising a mechanism, mounting platform, three-pronged rollers, card reader, double doors, and induction motor. The card reader detects the validity of the card and activates the mechanism and induction motor. An infrared sensor detects the user's position and controls the opening and closing of the double doors. Combined with a facial recognition device and a timed detection device, it ensures that users pass through according to the rules.
It effectively prevents users from crawling under or climbing over the turnstile, or tailgating others, reducing user losses and avoiding congestion caused by frequent opening and closing of double doors during peak traffic periods.
Smart Images
Figure CN117948034B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of tripod turnstiles, and in particular to an anti-tailgating tripod turnstile. Background Technology
[0002] A tripod turnstile is a type of access control gate, an intelligent control terminal device for pedestrian access points. It is specifically designed for locations where security checks or controls are required at entrances and exits, such as canteens, hotels, office buildings, museums, stadiums, clubs, subways, train stations, docks, and tourist attractions.
[0003] Existing tripod turnstiles have weak protection, allowing many people to crawl under them, climb over them, or tailgate users who are passing through normally. To address this issue, a security booth is usually placed next to the turnstile to monitor those who break the rules. However, security guards may change shifts or become less vigilant, allowing people to still cross the turnstile. Therefore, a tailgating tripod turnstile is needed to prevent people from crawling under or climbing over it, or tailgating users who are passing through normally. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the purpose of this application is to provide an anti-tailgating tripod turnstile to solve the technical problem that some users do not follow the rules and arbitrarily climb over the tripod turnstile.
[0005] The above-mentioned objective of this application is achieved through the following technical solution: an anti-tailgating tripod turnstile, comprising a mechanism, mounting platforms, a three-pronged roller, a card reader, double doors, and induction motors. Two mounting platforms are arranged opposite each other with a gap between them. The mechanism is installed in one of the mounting platforms, and the three-pronged roller is mounted on the mechanism. The card reader is mounted on the same mounting platform as the mechanism, located at one end of the mounting platform, and its signal is connected to the mechanism. The induction motors are respectively mounted on the ends of the two mounting platforms away from the card reader, with their output ends facing upwards. The double doors are respectively fixedly connected to the output ends of the two induction motors, and their signal is connected to the card reader. The height of the double doors is approximately 1.6m to 1.8m. An infrared sensor is provided on the side of the double doors closest to the card reader, and the infrared sensor's signal is connected to the induction motor.
[0006] By adopting the above technical solution, the user takes a card to the card reader. The card reader contacts the card and detects whether it is usable. If the card is usable, it simultaneously starts the mechanism and the induction motor. At this time, the user can push the three-pronged roller to rotate. After the user pushes the three-pronged roller to rotate, the rotation of the output end of the induction motor causes the double door to be in the open state. When the user passes through the double door, the infrared sensor detects that someone has passed and sends a signal to the induction motor. The induction motor starts and reverses to close the double door, sealing the passage between the installation platforms. This prevents people from entering. When following a user through a turnstile, the infrared sensor detects the person passing through the double doors and closes them. This traps the person behind the user inside the passage. Since the double doors are closed until a card is swiped, crawling under or over the turnstiles will be blocked by the double doors. This solves the problem in existing technologies where most people can crawl under or over the turnstiles, or follow the user who is passing through normally, causing damage to the user with the turnstile.
[0007] Furthermore, a face recognition device is also installed on the mounting platform. The face recognition device includes a display screen and a face recognition system. The face recognition system includes a face recognition module, which is used to identify whether there is a face in front of the display screen. The face recognition device is connected to an induction motor.
[0008] While the double-door design addresses the issue of some users arbitrarily climbing over the turnstile, the time-consuming opening and closing of the double doors during peak hours can cause congestion. The facial recognition device solves this problem. When there's a large flow of people, some will queue in front of the turnstile. Activating the facial recognition system's module detects a face on the display screen, activates the induction motor, opens the double doors, and keeps them open. Queuing users can then simply swipe their cards to pass through the turnstile, eliminating the need to wait for the doors to open and close, thus preventing congestion.
[0009] Furthermore, the face recognition system also includes a motion capture module, which is used to determine whether there are moving objects in front of the display screen.
[0010] By adopting the above technical solution, some users are too tall for the display screen to capture their faces. To address this, the present invention includes a dynamic capture module. Since a person standing in front of the display screen will inevitably move, the dynamic capture module captures any moving objects in front of the display screen and identifies them as faces, sending the signal to the face recognition system. The face recognition system then opens the double doors.
[0011] Furthermore, the face recognition system also includes a noise detection module, which is used to determine whether the decibel level around the display screen exceeds 50.
[0012] By adopting the above technical solution, some users are short, and the display screen cannot capture their face or body. To address this, the present invention includes a noise detection module. When there is a large flow of people, the noise generated will inevitably be loud. The noise detection module detects the sound around the display screen. If the sound decibel exceeds 50, the noise detection module determines that there is a person at the display screen and sends a signal to the face recognition system, which then opens the double doors.
[0013] Furthermore, a timing detection device is provided between the double door and the three-pronged roller. The timing detection device includes an infrared tester and an alarm light. The infrared tester is located inside the mounting platform and between the double door and the three-pronged roller. The infrared tester signal is connected to the alarm light, which is located on the mounting platform.
[0014] By adopting the above technical solution, the person following the user in front will be trapped in the passage. If the next person is unaware of what is happening and tries to swipe their card, the person trapped in the passage will be able to leave while the person swiping their card cannot pass through the turnstile. The setting of the timed detection device solves this technical problem. The person trapped in the passage will be trapped between the double door and the three-pronged roller. At this time, the infrared detector will detect whether there is a person between the double door and the three-pronged roller. If a person is detected and the person stays there for more than 5 seconds, the infrared detector will send a signal to the alarm light. The alarm light receives the signal and activates, reminding the security guard that someone is trying to illegally pass through the turnstile. The security guard will take the person out, and the next user can pass normally.
[0015] Furthermore, the movement includes a main body fixing plate, a main shaft mechanism, a rotation limiting mechanism, and an anti-rebound mechanism. The main shaft mechanism includes a rotating shaft, a main gear, and a connecting plate for connecting the three-pronged roller. The rotating shaft passes through the main body fixing plate and is rotatably connected to it. The main gear is fixedly connected to one end of the rotating shaft, and the connecting plate is fixedly connected to the other end of the rotating shaft. The anti-rebound mechanism includes a limiting plate, three cams, a circular plate, a limiting spring, and a fixing post. The limiting plate is located at the lower end of the side of the main body fixing plate where the connecting plate is located. One end of the limiting plate is rotatably connected to the main body fixing plate, and the other end is fixedly connected to one end of the limiting spring. The end of the limiting spring away from the limiting plate is fixedly connected to the fixing post. The fixing post is fixedly connected to the upper end of the main body fixing plate. The three cams are fixedly connected to the end of the rotating shaft that passes through the main body fixing plate. The three cams are located between the connecting plate and the main body fixing plate. The circular plate is fixedly connected to the limiting plate, and the arc edge of the circular plate fits into the recess of the three cams.
[0016] By adopting the above technical solution, when the facial recognition device is activated during periods of high foot traffic, the double doors will remain open. This allows someone to hold the three-pronged roller and rotate it back to its original angle. This person can then pass through the turnstile without swiping a card and activating the electromagnet inside the mechanism. The mechanism's design solves this technical problem. When a user pushes the three-pronged roller to rotate an angle, the roller drives the rotating shaft to rotate, and simultaneously, the three cams rotate. The protruding parts of the rotating cams push the circular plate to move. The circular plate's movement causes one end of the tension spring, which is fixed to the limiting plate, to rotate around the limiting plate and onto the main body's fixed plate. At this time, the tension spring pulls the limiting plate towards the three cams, causing the circular plate to slide along the arc edge of the three cams into the next groove of the three cams. Thus, when a previous user rotates the three-pronged roller to an angle, the circular plate, in conjunction with the three cams, increases the roller's rotation speed, preventing the next user from having enough time to hold the roller and rotate it back to its original angle. This solves the technical problem of another user being able to rotate the roller back to its original angle while holding it.
[0017] Furthermore, the rotation limiting mechanism includes a first limiting block and a first electromagnet. The first limiting block is located above the main gear and is rotatably connected to the main body fixing plate. The first electromagnet is disposed at the end of the first limiting block away from the main gear. The first electromagnet is signal-connected to the card reader. A second limiting block is mirror-displayed on the side of the main gear away from the first limiting block. The end faces of the first limiting block and the second limiting block near the main gear are in contact with the side of the teeth of the main gear.
[0018] By adopting the above technical solution, the rotary limiting mechanism works as follows: the first electromagnet receives a signal and starts to attract the end of the first limiting block away from the main gear, causing the first limiting block to rotate and disengage from the teeth of the main gear. In this way, the user can push the three-pronged roller to rotate. When the rotary limiting mechanism does not receive a signal, the first limiting block and the second limiting block press against both sides of the teeth of the main gear to prevent the three-pronged roller from rotating.
[0019] Furthermore, the main gear teeth include long teeth and arc-shaped teeth. The first limiting block and the second limiting block are provided with concave arc surfaces at one end near the main gear. The concave arc surfaces are located on the side of the first limiting block and the second limiting block near the main gear teeth. The concave arc surfaces are adapted to the arc surfaces of the arc-shaped teeth. There is a gap between the long teeth and the arc-shaped teeth.
[0020] By adopting the above technical solution, although the anti-rebound mechanism prevents another user from rotating the tricycle back to its original angle by holding it, if the previous user moves too slowly, thus blocking the activation of the anti-rebound mechanism, the next user may still be able to stop the tricycle and make it rotate. The design of long teeth, curved teeth, and concave arc surfaces solves this technical problem. When the user swipes the card reader, it activates the first electromagnet. The first electromagnet attracts one end of the first limit block, causing the other end of the first limit block to tilt up and disengage from the main gear, no longer pressing against the side of the long teeth. When the user rotates the tricycle, the tricycle drives the main gear to rotate through the connecting plate. The rotating main gear... As the curved teeth contact the concave surface of the second limiting block on the other side of the main gear, which is not attracted, the driving wheel continues to rotate. The end of the second limiting block near the main gear falls into the gap between the long teeth and the curved teeth. At this time, the next user wants to stop the tricycle and make it rotate. The rotating tricycle carries the main gear in the opposite direction. However, the end of the second limiting block between the long teeth and the curved teeth of the main gear in the opposite direction is pressed against the side of the curved teeth, preventing the tricycle from rotating. This solves the technical problem that if the previous user walks slowly and the anti-rebound mechanism is blocked, the next user may also be able to stop the tricycle and make it rotate.
[0021] Furthermore, the volume of the end of the first limiting block near the main gear is greater than the volume of the end of the first limiting block near the first electromagnet, and the shape and volume of the second limiting block are the same as those of the first limiting block.
[0022] By adopting the above technical solution, after the first electromagnet is turned off, the ends of the first and second limiting blocks that are close to the main gear will automatically tilt towards the main gear due to gravity, thereby fitting against both sides of the long teeth.
[0023] Furthermore, the face recognition system includes a signal transmission module, a face recognition module, a motion capture module, and a noise detection module;
[0024] The signal transmitting module is used to receive signals from the face recognition module, the motion capture module, and the noise detection module and send the signals to the induction motor;
[0025] The face recognition module is used to identify whether there is a face in front of the display screen. If there is, it sends a signal to the signal sending module; if not, it sends a signal to the dynamic capture module.
[0026] The dynamic capture module is used to determine whether there is a dynamic object in front of the display screen. If there is, it sends a signal to the signal sending module; if not, it sends a signal to the noise detection module.
[0027] The noise detection module is used to determine whether the decibel level around the display screen exceeds 50. If the decibel level exceeds 50, a signal is sent to the signal transmission module; otherwise, there is no response.
[0028] By adopting the above technical solution, if a face is present in front of the display screen, the face recognition module determines that a person is present on the screen and sends a signal to the signal sending module. The signal sending module then sends a signal to the induction motor, which starts the induction motor and opens the double doors. If the face recognition module does not detect a face, it sends a signal to the motion capture module. The motion capture module detects whether there is a moving object in front of the display screen. If there is, it sends a signal to the signal sending module, which then sends a signal to the induction motor, which starts the induction motor and opens the double doors. If there is no moving object, it sends a signal to the noise detection module. The noise detection module detects whether the sound around the display screen exceeds 50 decibels. If it exceeds 50 decibels, it sends a signal to the signal sending module, which then sends a signal to the induction motor, which starts the induction motor and opens the double doors.
[0029] In summary, this application includes at least one of the following beneficial technical effects.
[0030] 1. By configuring the installation platform, three-pronged roller, card reader, double doors, mechanism, and induction motor, the system enables users to swipe their cards. The card reader detects whether the card is valid. If the card is valid, it activates the first electromagnet and induction motor within the mechanism. The first electromagnet receives a signal and activates, attracting the end of the first limit block away from the main gear. This causes the first limit block to rotate and disengage from the teeth of the main gear, allowing the user to push the three-pronged roller to rotate. At this time, the induction motor rotates and opens the double doors, allowing the user to pass through the passage between the installation platforms. After the user passes through the double doors, the infrared sensor detects someone passing by and sends a signal to the induction motor. The induction motor starts and reverses to close the double doors, sealing the passage between the installation platforms. This prevents someone from tailgating the user in front of them through the three-pronged roller gate.
[0031] 2. By setting up a timed detection device, the infrared detector can detect whether there is a person between the double door and the three-roller gate. If a person is detected and stays there for more than 5 seconds, the infrared detector will send a signal to the alarm light. The alarm light will receive the signal and activate, reminding the security guard that someone is trying to pass through the three-roller gate in violation of regulations. The security guard will then escort the person out to ensure that the next user can pass through normally.
[0032] 3. By installing a facial recognition device, the system activates when there is a large flow of people. The facial recognition module first determines whether a face is present in front of the display screen. If so, it sends a signal to the signal transmitting module, which in turn sends a signal to the induction motor to open the double doors. If no face is present, the facial recognition module sends a signal to the motion capture module. The motion capture module receives the signal and detects whether there is a moving object in front of the display screen. If so, it sends a signal to the signal transmitting module, which in turn sends a signal to the induction motor to open the double doors. If no motion capture module is present, the signal is sent to the noise detection module. The noise detection module checks if the decibel level around the display screen exceeds 50. If it does, the noise detection module sends a signal to the signal transmitting module, which in turn sends a signal to the induction motor to open the double doors. If the noise detection module detects that the decibel level around the display screen does not exceed 50, it does not send any signal. This allows queuing users to simply swipe their cards to pass through the turnstile, eliminating the need to wait for the double doors to open and close and preventing congestion. Attached Figure Description
[0033] Figure 1 This is an overall structural diagram of the embodiment;
[0034] Figure 2 This is another view of the overall structure of the embodiment;
[0035] Figure 3 This is a block diagram of the components of a facial recognition system;
[0036] Figure 4 This is a flowchart of the facial recognition system's execution process;
[0037] Figure 5 This is a diagram of the overall structure of the movement;
[0038] Figure 6 This is another view of the overall structure of the movement;
[0039] Figure 7 It is along Figure 6 A cross-sectional view along line AA in the middle.
[0040] Reference numerals: 1. Mechanism; 10. Main body fixing plate; 11. Main shaft mechanism; 110. Rotating shaft; 111. Main gear; 1110. Long tooth; 1111. Arc tooth; 112. Connecting plate; 12. Rotation limiting mechanism; 120. First limiting block; 121. First electromagnet; 122. Second limiting block; 13. Anti-rebound mechanism; 130. Limiting plate; 131. Three cams; 132. Circular plate; 133. Limiting tension spring; 134. Fixing column; 2. Mounting platform; 3. Three-pronged roller; 4. Card reader; 5. Double door; 6. Induction motor; 7. Infrared sensor; 8. Timing detection device; 80. Infrared tester; 81. Alarm light; 9. Face recognition device; 90. Display screen; 91. Akidrasa. Detailed Implementation
[0041] The present application will be further described in detail below with reference to the accompanying drawings.
[0042] Example, refer to Figure 1 , Figure 2An anti-tailgating three-roller device includes a mechanism 1, a mounting platform 2, a three-pronged roller 3, a card reader 4, a double door 5, and an induction motor 6. Two mounting platforms 2 are arranged opposite each other with a gap between them. The mechanism 1 is installed in one of the mounting platforms 2, and the three-pronged roller 3 is installed on the mechanism 1. The card reader 4 is installed on the same mounting platform 2 as the mechanism 1, located at one end of the mounting platform 2, and is signal-connected to the mechanism 1. The induction motor 6 is installed on the two mounting platforms 2 respectively, away from each other. At one end of the card reader 4, the output ends of two induction motors 6 face upwards. The double doors 5 are fixedly connected to the output ends of the two induction motors 6 respectively. The signals of the induction motors 6 are connected to the card reader 4. The height of the double doors 5 is approximately 1.6m to 1.8m. An infrared sensor 7 is installed on the side of the double doors 5 closest to the card reader 4. The infrared sensor 7 is connected to the card reader 4. When a user takes a card to the card reader 4, the card reader 4 contacts the card and detects whether the card is usable. If the card is usable, the mechanism 1 and the induction sensor are activated simultaneously. Motor 6 allows the user to push the three-pronged roller 3 to rotate. After the user passes through the three-pronged roller 3, the rotation of the output end of the induction motor 6 opens the double door 5. When the user passes through the double door 5, the infrared sensor 7 detects that someone has passed and sends a signal to the card reader 4. The card reader 4 receives the signal and starts the induction motor 6 to reverse and close the double door 5, sealing the passage between the mounting platforms 2. This prevents someone from tailgating the user in front of them through the turnstile. When the person in front passes through the double door 5, the infrared sensor 7 will detect and close the double door 5. In this way, the person following the user in front will be trapped in the passage. And when the card is not swiped, the double door 5 is in the closed state. At this time, crawling under the three-pronged roller 3 or climbing over the three-pronged roller 3 will be blocked by the double door 5. This solves the problem in the existing technology that most people can crawl under the turnstile or climb over the turnstile, or someone can tailgating the user in front of them and cause losses to the user with the turnstile installed.
[0043] The person following the user in front will be trapped in the passage. If the next person, unaware of the situation, tries to swipe their card, the person trapped in the passage will be allowed to pass, while the person swiping their card will be unable to pass through the turnstile. To solve this technical problem, this embodiment includes a timed detection device 8 between the double door 5 and the three-pronged roller 3. The timed detection device 8 includes an infrared tester 80 and an alarm light 81. The infrared tester is located inside the mounting platform 2 and between the double door 5 and the three-pronged roller 3. The infrared tester's signal is connected to the alarm light 81, which is located on the mounting platform 2. When the person trapped in the passage is trapped between the double door 5 and the three-pronged roller 3, the infrared tester detects whether there is a person between the double door 5 and the three-pronged roller 3. If a person is detected and has been there for more than 5 seconds, the infrared tester sends a signal to the alarm light 81. The alarm light 81 receives the signal and activates, alerting the security guard that someone is trying to illegally pass through the turnstile. The security guard then escorts the person out, allowing the next user to pass normally.
[0044] While the double-door design (Type 5) solves the technical problem of some users arbitrarily climbing over the turnstile, its opening and closing is very time-consuming and can easily cause congestion in high-traffic areas. To address this issue, refer to... Figure 3 , Figure 4 In this embodiment, a face recognition device 9 is also installed on the mounting platform 2. The face recognition device 9 includes a display screen 90 and a face recognition system. The face recognition system includes a signal transmission module, a face recognition module, a motion capture module, and a noise detection module.
[0045] The signal transmitting module is used to receive signals from the face recognition module, the motion capture module, and the noise detection module and send the signals to the induction motor 6;
[0046] The face recognition module is used to identify whether there is a face in front of the display screen. If there is, it sends a signal to the signal sending module; if not, it sends a signal to the motion capture module.
[0047] The motion capture module is used to determine whether there is a moving object in front of the display screen. If there is, it sends a signal to the signal sending module; if not, it sends a signal to the noise detection module.
[0048] The noise detection module determines whether the noise level around the display screen 90 exceeds 50 decibels. If the noise level exceeds 50 decibels, a signal is sent to the signal transmitting module; otherwise, no response is made. If a face is present in front of the display screen 90, the face recognition module determines that a person is present and sends a signal to the signal transmitting module. The signal transmitting module then sends a signal to the induction motor 6, which activates and opens the double door 5. If the face recognition module does not detect a face, a signal is sent to the motion capture module. The motion capture module detects whether there is a moving object in front of the display screen 90; if so, it sends a signal to... The signal sending module sends a signal to the induction motor 6, which then starts and opens the double door 5. If no signal is received, the signal is sent to the noise detection module. The noise detection module detects whether the sound around the display screen 90 exceeds 50 decibels. If it does, it sends a signal to the signal sending module, which in turn sends a signal to the induction motor 6. The induction motor 6 then starts and opens the double door 5, allowing queuing users to simply swipe their cards to pass through the turnstile 3. This eliminates the need for queuing users to wait for the double door 5 to open and close, preventing congestion.
[0049] When there is a large flow of people, the facial recognition device 9 is activated, and the double gate 5 remains open. This means that if someone holds the tripod roller 3 and rotates it back to its original angle, the person can pass through the tripod turnstile without swiping a card and activating the electromagnet inside the mechanism 1. To solve this technical problem, refer to... Figure 5 , Figure 6 , Figure 7 In this embodiment, the mechanism 1 is configured to include a main body fixing plate 10, a main shaft mechanism 11, a rotation limiting mechanism 12, and an anti-rebound mechanism 13. The main shaft mechanism 11 includes a rotating shaft 110, a main gear 111, and a connecting plate 112 for connecting the three-pronged roller 3. The rotating shaft 110 passes through the main body fixing plate 10 and is rotatably connected to the main body fixing plate 10. The main gear 111 is fixedly connected to one end of the rotating shaft 110, and the connecting plate 112 is fixedly connected to the other end of the rotating shaft 110. The anti-rebound mechanism 13 includes a limiting plate 130, a three-cam 131, a circular plate 132, a limiting tension spring 133, and a fixing post 134. The limiting plate 130 is configured with... The lower end of the main fixing plate 10 is provided with the connecting plate 112. One end of the limiting plate 130 is rotatably connected to the main fixing plate 10, and the other end is fixedly connected to one end of the limiting tension spring 133. The end of the limiting tension spring 133 away from the limiting plate 130 is fixedly connected to the fixing post 134. The fixing post 134 is fixedly connected to the upper end of the main fixing plate 10. The three cams 131 are fixedly connected to one end of the rotating shaft 110 that passes through the main fixing plate 10. The three cams 131 are set between the connecting plate 112 and the main fixing plate 10. The circular plate 132 is fixedly connected to the limiting plate 130. The arc edge of the circular plate 132 fits into the recess of the three cams 131.
[0050] When a user pushes the tricycle 3 to rotate at an angle, the tricycle 3 drives the rotating shaft 110 to rotate, and the tri-cam 131 rotates accordingly. The protruding part of the rotating tri-cam 131 pushes the circular plate 132 to move. The movement of the circular plate 132 causes one end of the tension spring fixed to the limiting plate 130 to rotate around the end of the limiting plate 130 connected to the main body fixing plate 10. At this time, the tension spring pulls the limiting plate 130 to move closer to the tri-cam 131, so that the circular plate 132 slides into the next groove of the tri-cam 131 by rubbing against the arc edge of the tri-cam 131. In this way, when the previous user rotates the tricycle 3 at an angle, the circular plate 132 will cooperate with the tri-cam 131 to make the tricycle 3 rotate faster. The next user will not have time to hold the tricycle 3 and rotate it back to the original angle, thus solving the technical problem that another user can hold the tricycle 3 and rotate it back to the original angle.
[0051] The rotation limiting mechanism 12 includes a first limiting block 120 and a first electromagnet 121. The first limiting block 120 is located above the main gear 111 and is rotatably connected to the main body fixing plate 10. The first electromagnet 121 is signal-connected to the card reader 4. The first electromagnet 121 is located at the end of the first limiting block 120 away from the main gear 111. A second limiting block 122 is mirror-arranged on the side of the main gear 111 away from the first limiting block 120. The ends of the first limiting block 120 and the second limiting block 122 are close to the main gear 111. The end face of the first limit block 120 is attached to the side of the teeth of the main gear 111. The rotation limiting mechanism 12 works as follows: the first electromagnet 121 receives a signal and starts to attract the end of the first limit block 120 away from the main gear 111, so that the first limit block 120 rotates and disengages from the teeth of the main gear 111. In this way, the user can push the three-pronged roller 3 to rotate. When the rotation limiting mechanism 12 does not receive a signal, the first limit block 120 and the second limit block 122 press against both sides of the teeth of the main gear 111 to prevent the three-pronged roller 3 from rotating.
[0052] Although the anti-rebound mechanism 13 prevents another user from holding the tricycle 3 and rotating it back to its original angle, if the previous user walks too slowly, thus blocking the activation of the anti-rebound mechanism 13, the next user may still be able to stop the tricycle 3 and rotate it. To solve this technical problem, in this embodiment, the main gear 111 teeth include long teeth 1110 and arc-shaped teeth 1111, and the first limiting block 120 and the second limiting block 122 are close to each other. One end of the main gear 111 has a concave arc surface, which is located on the side of the first limiting block 120 and the second limiting block 122 near the teeth of the main gear 111. The concave arc surface is adapted to the arc surface of the arc tooth 1111. There is a gap between the long tooth 1110 and the arc tooth 1111. When the user swipes the card reader 4, the first electromagnet 121 is activated. The first electromagnet 121 attracts one end of the first limiting block 120, causing the other end of the first limiting block 120 to tilt up and detach from the main gear 111, no longer pushing against it. When the user rotates the trident roller 3, the trident roller 3 drives the main gear 111 to rotate via the connecting plate 112. The rotating main gear 111, with its curved teeth 1111, contacts the concave arc surface of the second limiting block 122 on the other side of the main gear 111, which is not attracted. The driving wheel continues to rotate, and the end of the second limiting block 122 near the main gear 111 falls into the gap between the long tooth 1110 and the curved tooth 1111. At this time, the next user wants to stop the trident roller 3 to rotate it. The rotating trident roller 3 carries the main gear 111 in the opposite direction. However, the end of the second limiting block 122 between the long tooth 1110 and the arc tooth 1111 of the main gear 111, which is close to the main gear 111, abuts against the side of the arc tooth 1111, preventing the trident roller 3 from rotating. This solves the technical problem that if the previous user walks slowly and the anti-rebound mechanism 13 is blocked from starting, the next user may also stop the trident roller 3 and make it rotate.
[0053] In order to enable the first limiting block 120 and the second limiting block 122 to automatically return to their original positions after the first electromagnet 121 is closed, in this embodiment, the volume of the end of the first limiting block 120 near the main gear 111 is set to be larger than the volume of the end of the first limiting block 120 near the first electromagnet 121. The shape and volume of the second limiting block 122 are the same as those of the first limiting block 120. In this way, after the first electromagnet 121 is closed, the ends of the first limiting block 120 and the second limiting block near the main gear 111 will automatically tilt towards the main gear 111 due to gravity, thereby achieving automatic return to their original positions.
[0054] Specific implementation process: The user swipes their card on the card reader 4. The card reader 4 checks if the card is usable. If the card is usable, it activates the first electromagnet 121 and the induction motor 6 inside the mechanism 1. The first electromagnet 121 receives a signal and starts to attract the end of the first limit block 120 away from the main gear 111, causing the first limit block 120 to rotate and disengage from the teeth of the main gear 111. This allows the user to push the three-pronged roller 3 to rotate. At this time, the induction motor 6 rotates and opens the double door 5, allowing the user to pass through the passage between the mounting platforms 2. After the user passes through the double door 5, the infrared sensor 7 detects that someone has passed by and sends a signal to the induction motor 6. The induction motor 6 starts and reverses to close the double door 5, sealing the passage between the mounting platforms 2. This prevents someone from tailgating the user in front of them through the tripod turnstile.
[0055] When there is a large flow of people, the face recognition device 9 can be activated. The face recognition system of the face recognition device 9 uses a face recognition module, a motion capture module, and a noise detection module to determine whether there are people around the display screen 90. The face recognition module first determines whether there is a face in front of the display screen 90. If there is, it sends a signal to the signal sending module, which sends the signal to the induction motor 6 to open the double door 5. If there is no face, the face recognition module sends the signal to the motion capture module. The motion capture module receives the signal and detects whether there is a moving object in front of the display screen 90. If there is, it sends a signal to the signal sending module, which sends the signal to the induction motor 6 to open the double door 5. If there is no motion capture module, the signal is sent to the noise detection module. The noise detection module detects whether the decibel level of the sound around the display screen 90 exceeds 50. If it does, the noise detection module sends a signal to the signal sending module, which sends the signal to the induction motor 6 to open the double door 5. If the noise detection module detects that the decibel level of the sound around the display screen 90 does not exceed 50, it will not send any signal.
[0056] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A three-roller anti-tailgating gate, characterized in that, The device includes a mechanism (1), a mounting platform (2), a three-pronged roller (3), a card reader (4), a double door (5), and an induction motor (6). The mounting platform (2) consists of two units arranged opposite each other with a gap between them. The mechanism (1) is installed inside one of the mounting platforms (2), and the three-pronged roller (3) is installed on the mechanism (1). The card reader (4) is installed on the same mounting platform (2) as the mechanism (1), located at one end of the mounting platform (2). The card reader (4) is connected to the mechanism (1) via a signal. The induction motors (6) are installed at the ends of the two mounting platforms (2) furthest from the card reader (4), with their output ends facing upwards. The double door... Doors (5) are fixedly connected to the output ends of two induction motors (6), and the induction motors (6) are connected to the card reader (4). The height of the double doors (5) is 1.6m to 1.8m. An infrared sensor (7) is provided on the side of the double doors (5) near the card reader (4), and the infrared sensor (7) is connected to the induction motor (6). A face recognition device (9) is also installed on the mounting platform (2). The face recognition device (9) includes a display screen (90) and a face recognition system. The face recognition system includes a face recognition module. The face recognition module is used to identify whether there is a face in front of the display screen (90). The face recognition device (9) is connected to the induction motor (6). The face recognition system includes a signal transmission module, a face recognition module, a motion capture module, and a noise detection module; The signal transmitting module is used to receive signals from the face recognition module, the motion capture module and the noise detection module and send the signals to the induction motor (6); The face recognition module is used to identify whether there is a face in front of the display screen (90). If there is, the signal is sent to the signal sending module; if not, the signal is sent to the dynamic capture module. The dynamic capture module is used to determine whether there is a dynamic object in front of the display screen (90). If there is, the signal is sent to the signal sending module; if not, the signal is sent to the noise detection module. The noise detection module is used to determine whether the decibel level around the display screen (90) exceeds 50. If the decibel level exceeds 50, a signal is sent to the signal transmission module. If not, there will be no response. When the infrared sensor detects someone passing by, it sends a signal to the induction motor. The induction motor then reverses and closes the double doors, blocking the passage between the installation platforms. This prevents people from tailgating users through the turnstile. When there is a large flow of people, the facial recognition device is activated, and the double doors will remain open. This allows queuing users to simply swipe their cards to pass through the turnstile, eliminating the need to wait for the double doors to open and close and preventing congestion.
2. The anti-tailgating three-roll gate according to claim 1, wherein, The face recognition system also includes a motion capture module, which is used to determine whether there is a moving object in front of the display screen (90).
3. The anti-tailgating three-roll gate according to claim 1, wherein, The face recognition system also includes a noise detection module, which is used to determine whether the decibel level around the display screen (90) exceeds 50.
4. The anti-tailgating tripod brake according to claim 1, characterized in that, A timing detection device (8) is provided between the double door (5) and the three-pronged roller (3). The timing detection device (8) includes an infrared tester (80) and an alarm light (81). The infrared tester (80) is located inside the mounting platform (2) and between the double door (5) and the three-pronged roller (3). The infrared tester (80) is connected to the alarm light (81). The alarm light (81) is located on the mounting platform (2).
5. The anti-tailgating tripod brake according to claim 1, characterized in that, The mechanism (1) includes a main body fixing plate (10), a main shaft mechanism (11), a rotation limiting mechanism (12), and an anti-rebound mechanism (13). The main shaft mechanism (11) includes a rotating shaft (110), a main gear (111), and a connecting plate (112) for connecting the three-pronged roller (3). The rotating shaft (110) passes through the main body fixing plate (10) and is rotatably connected to the main body fixing plate (10). The main gear (111) is fixedly connected to one end of the rotating shaft (110), and the connecting plate (112) is fixedly connected to the other end of the rotating shaft (110). The anti-rebound mechanism (13) includes a limiting plate (130), a three-cam (131), a circular plate (132), a limiting tension spring (133), and a fixing post (134). The limiting plate (130) is provided with... At the lower end of the side of the main fixing plate (10) where the connecting plate (112) is provided, one end of the limiting plate (130) is rotatably connected to the main fixing plate (10), and the other end is fixedly connected to one end of the limiting tension spring (133). The end of the limiting tension spring (133) away from the limiting plate (130) is fixedly connected to the fixing post (134). The fixing post (134) is fixedly connected to the upper end of the main fixing plate (10). The three cams (131) are fixedly connected to one end of the rotating shaft (110) that passes through the main fixing plate (10). The three cams (131) are arranged between the connecting plate (112) and the main fixing plate (10). The circular plate (132) is fixedly connected to the limiting plate (130). The arc edge of the circular plate (132) fits into the recess of the three cams (131).
6. The anti-tailgating tripod brake according to claim 5, characterized in that, The rotation limiting mechanism (12) includes a first limiting block (120) and a first electromagnet (121). The first limiting block (120) is located above the main gear (111) and is rotatably connected to the main body fixing plate (10). The first electromagnet (121) is located at the end of the first limiting block (120) away from the main gear (111). The first electromagnet (121) is signal connected to the card reader (4). A second limiting block (122) is mirror-arranged on the side of the main gear (111) away from the first limiting block (120). The end faces of the first limiting block (120) and the second limiting block (122) near the main gear (111) are attached to the side of the teeth of the main gear (111).
7. The anti-tailgating tripod brake according to claim 6, characterized in that, The main gear (111) teeth include long teeth (1110) and arc-shaped teeth (1111). The first limiting block (120) and the second limiting block (122) have concave arc surfaces at one end near the main gear (111). The concave arc surfaces are located on the side of the first limiting block (120) and the second limiting block (122) near the teeth of the main gear (111). The concave arc surfaces are adapted to the arc surfaces of the arc-shaped teeth (1111). There is a gap between the long teeth (1110) and the arc-shaped teeth (1111).
8. The anti-tailgating tripod brake according to claim 7, characterized in that, The volume of the end of the first limiting block (120) near the main gear (111) is greater than the volume of the end of the first limiting block (120) near the first electromagnet (121). The shape and volume of the second limiting block (122) are the same as those of the first limiting block (120).