A safety detection device for unmanned boarding bridge and a stop triggering method

Abstract

The present invention discloses an unmanned boarding bridge safety detection device and a stop triggering method, which belongs to the field of sensor detection technology, and includes a control terminal, an image detection unit, a pick-up port safety detection unit and a side safety detection unit. The pick-up port safety detection unit includes a U-shaped fixed frame with a speed detection component and a rainfall detection component. The U-shaped fixed frame is provided with a first distance detection anti-collision mechanism and a second distance detection anti-collision mechanism. The second distance detection anti-collision mechanism is connected to a telescopic rain cover. The first distance detection anti-collision mechanism and the second distance detection anti-collision mechanism are both electrically connected to the control terminal. At the same time, a stop triggering method based on the above device is disclosed. The above unmanned boarding bridge safety detection device and stop triggering method are used to avoid inertial impact. At the same time, a triggering component is provided. The unmanned boarding bridge stops using a double triggering mechanism, so that the boarding bridge runs safely and reliably.

Description

Technical Field

[0001] The present invention relates to the field of sensor detection technology, and in particular to a safety detection device for an unmanned boarding bridge and a stop triggering method. Background Art

[0002] A boarding bridge is a device used at an airport to connect the terminal building and aircraft, providing passengers with a convenient passage directly from the terminal building to the aircraft, avoiding the inconvenience of waiting and boarding in the open air. A boarding bridge usually consists of a fixed part and a movable part. The movable part can be adjusted according to the height and parking position of different aircraft models to ensure that passengers can get on and off the aircraft safely and comfortably.

[0003] The boarding bridge can automatically adjust the height and distance according to the position of the aircraft to ensure accurate docking with the aircraft door. The boarding bridge is equipped with an automated unmanned driving system to ensure docking accuracy. Its key technologies include sensors, image recognition, automatic control and precise mechanical design. Existing boarding bridges have image recognition and positioning equipment that can identify and locate the aircraft's cabin door. When the aircraft is docked, the camera captures the image of the aircraft's cabin door and determines the exact position and angle of the aircraft's cabin door through image analysis. LiDAR and ranging sensors are used to measure distance and environmental obstacles, and provide relative position information between the aircraft and the boarding bridge. These data help the system adjust the movement path of the boarding bridge in real time to ensure safe and accurate approach to the aircraft. In order to ensure the safety of the pick-up, contact sensors and emergency stop buttons are set up. Once an abnormal situation is detected or an obstacle is encountered, the system will stop moving immediately to prevent damage. For example, Asia's first fully automatic boarding bridge is used at Chengdu Tianfu International Airport. It is equipped with a door visual positioning system that can accurately identify and lock the aircraft door, transmit information to the central control system in real time and complete the docking operation, breaking the previous limitation of manual operation by staff and realizing an automated and intelligent docking process. At the same time, the patent with application number CN201710262227.7 was retrieved and disclosed a boarding bridge anti-collision system and a boarding bridge anti-collision control method. The detection device is used to detect the distance information between the boarding bridge and the aircraft engine, so that the control system controls the operating status of the boarding bridge drive mechanism, lifting mechanism and receiving port of the boarding bridge according to the above distance information, so as to prevent the boarding bridge from colliding with the aircraft engine and ensure the safety and reliability of the boarding bridge when docking with the aircraft. The patent with application number CN201711464137.2 discloses a boarding bridge receiving port anti-collision mechanism and a boarding bridge containing the mechanism, including a telescopic floor, which can move forward and backward along a fixed frame to adjust the extension length of the boarding bridge. When picking up an aircraft, the boarding bridge stops moving at a certain distance from the aircraft, and controls the telescopic floor to extend and contact the aircraft, avoiding the overall structure from contacting the aircraft and reducing the risk of collision when picking up an aircraft. Patent application number CN202221962926.5 discloses a boarding bridge close-range pick-up control system, which is equipped with a distance sensor and a trigger stop mechanism to avoid collisions caused by sensor failure. However, the following problems still exist:

[0004] (1) Although the prior art has a trigger stop mechanism, it operates at a low speed and has a buffer pad for cushioning, but the inertial impact will also cause impact on the aircraft. A single-position distance sensor is used for detection, which has low detection accuracy and poses a safety hazard.

[0005] (2) The surface curves of different models are also different. The telescopic rain cover is deployed after docking, which is inefficient and cannot be adapted to all models. Summary of the invention

[0006] The purpose of the present invention is to provide a safety detection device for an unmanned boarding bridge and a stop triggering method to solve the above-mentioned technical problems.

[0007] To achieve the above-mentioned object, the present invention provides a safety detection device for an unmanned boarding bridge, including a control terminal communicating with a management, and also including a safety detection unit for a receiving port;

[0008] The airport entrance safety detection unit includes a U-shaped fixing frame, and a first distance detection anti-collision mechanism is arranged on the cross bar of the U-shaped fixing frame. The first distance detection anti-collision mechanism includes a first distance detection component and a touch-stop component. The touch-stop component is arranged opposite to the cabin door and is arranged alternately with the first distance detection module.

[0009] Preferably, a second distance detection anti-collision mechanism is provided on the two vertical rods of the U-shaped fixing frame, the second distance detection anti-collision mechanism is connected to the telescopic rain cover, the first distance detection anti-collision mechanism and the second distance detection anti-collision mechanism are both electrically connected to the control terminal, and a speed detection plastic part and a rainfall detection component are also provided on the U-shaped fixing frame. Two groups of first distance detection components are provided and are respectively arranged opposite to the cabin door and the ground, and are used to detect the distance between the pick-up port and the cabin door and the distance between the pick-up port and the ground. Each group of distance detection components includes a number of first distance detection modules arranged in parallel, and the speed detection component, the rainfall detection component and the first distance detection module are all electrically connected to the control terminal.

[0010] Preferably, it also includes a side safety detection unit, which includes a height adjustment drive motor, the height adjustment drive motor is connected to a drive shaft, the drive shaft is installed on the side of the boarding bridge, a plurality of first meshing gears are arranged on the drive shaft, a plurality of L-shaped rack lifting plates are arranged relatively to the plurality of first meshing gears, one end of the L-shaped rack lifting plate is arranged as a trapezoidal structure and is fixed with a tightening push rod, one end of the L-shaped rack lifting plate is slidably arranged in a trapezoidal slide groove on the side of the boarding bridge, a plurality of side distance detection modules and a plurality of stop components are linearly distributed on the L-shaped rack lifting plate, and the side distance detection modules and the stop components are arranged alternately;

[0011] The side distance detection module, the height adjustment drive motor and the tightening push rod are all electrically connected to the control terminal.

[0012] Preferably, the stop assembly includes a rubber contact head, which is fixedly connected to one end of the trigger threaded rod, an adjusting limit sleeve is threadedly connected to the trigger threaded rod, and limit rings are arranged at both ends of the adjusting limit sleeve, and the adjusting limit sleeve includes a trigger part and a connecting part which are arranged in sequence, and the outer diameter of the trigger part is larger than the outer diameter of the connecting part; the trigger part sleeve is provided with a buffer spring, one end of the buffer spring is in contact with the limit ring, and the other end of the buffer spring is arranged opposite to the trigger sleeve, and a guide column is arranged on the limit ring abutting against the trigger sleeve, and the guide column is inserted on the trigger sleeve, and the trigger sleeve is arranged at the bottom of the connecting head and in the L-shaped rack lifting plate, and a trigger switch is arranged in the trigger sleeve; an adjusting gear is arranged at the other end of the trigger threaded rod, and the adjusting gear is meshed with the driving gear, and the driving gear is connected to the adjusting motor, and the adjusting motor is fixed on the outside of the trigger sleeve;

[0013] The trigger switch is connected to the boarding bridge driving mechanism of the boarding bridge, and the trigger switch and the regulating motor are both electrically connected to the control terminal.

[0014] Preferably, the second distance detection anti-collision mechanism includes a plurality of second distance detection modules arranged in parallel, the second distance detection modules are connected to the electric push rod, the electric push rod is arranged on the vertical rod through an elastic adjustment seat, the elastic adjustment seat includes a guide mounting sleeve, a guide groove is provided in the guide mounting sleeve, a guide block is provided on the side of the cylinder body of the electric push rod, the guide block is arranged in the guide groove, an adjustment spring is installed inside the guide mounting sleeve through an elastic adjustment plate, the adjustment spring is arranged opposite to the bottom of the cylinder body of the electric push rod, the guide mounting sleeve is arranged on the vertical rod, and the telescopic end of the electric push rod is connected to the telescopic rain cover through a connecting plate;

[0015] The second distance detection module and the electric push rod are both electrically connected to the control terminal.

[0016] Preferably, a positioning groove is provided in the guide groove, a blind hole is opened on the side of the guide block, a positioning spring and a positioning ball are provided in the blind hole, a limiting ring is provided on the top of the blind hole, the inner diameter of the limiting ring is smaller than the diameter of the positioning ball, and the positioning ball is arranged opposite to the positioning groove.

[0017] Preferably, it also includes an image detection unit, which includes a pan-tilt mounted on the boarding bridge, a camera is mounted on the pan-tilt, and both the pan-tilt and the camera are connected to the control terminal for identifying the position of the cabin door;

[0018] The camera is electrically connected to the control terminal.

[0019] Preferably, the first distance detection module, the side distance detection module and the second distance detection module are all infrared distance sensors, ultrasonic distance sensors and ranging radars, or a combination thereof.

[0020] Based on the above-mentioned stop triggering method of the unmanned boarding bridge safety detection device, the specific steps are as follows:

[0021] Step S1: The management machine sends the data of the aircraft to be docked to the control terminal, and the aircraft data includes the aircraft size information;

[0022] Step S2: the control terminal controls the PTZ according to the aircraft size information so that the camera collects aircraft images and identifies the door position;

[0023] Step S3: The control terminal controls the operation of the boarding bridge drive mechanism of the boarding bridge according to the door position and aircraft size information, and performs safety distance detection, rainfall detection and speed detection at the same time; calculates the taxiing distance according to the rainfall detection data and the speed detection data, and determines whether to trigger the boarding bridge drive mechanism to stop operating according to the detected distance data and the taxiing distance.

[0024] Preferably, in step S3,

[0025] The calculation formula for sliding distance is as follows:

[0026]

[0027] Among them, S is the sliding distance, V is the current travel speed, μ is the sum of the ground friction factor related to rainfall and the friction factor of the boarding bridge itself, and g is the gravitational constant;

[0028] When d1 = S*sinθ + d0, the boarding bridge drive mechanism stops running, and the telescopic part of the boarding bridge continues to slide under the action of inertia;

[0029] Where d1 is the distance between the boarding gate and the cabin door, θ is the angle between the running direction of the boarding bridge and the centerline of the aircraft, and d0 is the set safety distance;

[0030] When d2=S*cosθ+d0, the boarding bridge driving mechanism stops moving, and after the fixed part and the receiving port of the boarding bridge rotate to the set angle, the boarding bridge driving mechanism drives the telescopic part to move;

[0031] The control terminal determines the door height and the engine height according to the aircraft size information, controls the boarding bridge driving mechanism according to the door height so that the height of the boarding bridge is consistent with the door height, and adjusts the height of the L-shaped rack lifting plate according to the engine height;

[0032] In the stop component, the extension length of the trigger threaded rod is adjusted by adjusting the motor according to the set safety distance. When the first distance detection component and the second distance detection component fail and the rubber contact head contacts an obstacle, the trigger threaded rod drives the adjustment limit sleeve to move inward, so that the trigger part triggers the trigger switch and the boarding bridge drive mechanism stops running;

[0033] When the boarding bridge moves toward the cabin door, the control terminal determines the fuselage curve according to the aircraft size information, and several electric push rods extend a corresponding distance according to the fuselage curve and drive the retractable rain cover to unfold. When the distance detected by the second distance detection module is equal to the set threshold, several electric push rods extend outward to the set length at the same time, so that the retractable rain cover fits the fuselage.

[0034] Therefore, the present invention adopts the above-mentioned unmanned boarding bridge safety detection device and stop triggering method, which has the following beneficial effects:

[0035] (1) The taxiing distance after the boarding bridge stops driving is calculated based on weather conditions and operating speed to avoid inertial impact. At the same time, a trigger component is set up. The unmanned boarding bridge stops using a double trigger mechanism, making the boarding bridge safer and more reliable, and improving the safety margin of airport operations. A pick-up safety detection unit and a side safety detection unit are set up to improve safety.

[0036] (2) The second distance detection anti-collision mechanism includes a plurality of second distance detection modules arranged in parallel. The second distance detection modules are connected to the electric push rod. The telescopic end of the electric push rod is connected to the telescopic rain cover through a connecting plate, so that the shape of the telescopic rain cover can be adjusted during the operation and docked at the last moment, so that the telescopic rain cover fits the fuselage better and will not cause impact to the aircraft.

[0037] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic structural diagram of a safety detection device for an unmanned boarding bridge according to the present invention;

[0039] Figure 2 This is a schematic diagram of the structure of the touch-stop assembly of the present invention;

[0040] Figure 3 This is a schematic diagram of the internal structure of the guide installation sleeve of the present invention;

[0041] Figure 4 This is a schematic diagram of the internal structure of the guide block of the present invention;

[0042] Figure 5 It is a schematic diagram of the structure of the L-shaped rack lifting plate of the present invention.

[0043] Reference numerals

[0044] 1. Image detection unit; 11. PTZ; 12. Camera;

[0045] 2. Port safety detection unit; 21. U-shaped fixing frame; 22. First distance detection module; 23. Second distance detection anti-collision mechanism; 231. Second distance detection module; 232. Electric push rod; 233. Guide installation sleeve; 234. Guide groove; 235. Guide block; 236. Elastic adjustment plate; 237. Adjustment spring; 238. Accommodating blind hole; 239. Positioning spring; 2310. Positioning ball; 24. Speed ​​detection component; 25. Rainfall detection component;

[0046] 3. Side safety detection unit; 31. Height adjustment drive motor; 32. Drive shaft; 33. L-shaped rack lifting plate; 34. Tightening push rod; 35. Side distance detection module;

[0047] 4. Stop assembly; 41. Rubber contact head; 42. Trigger threaded rod; 43. Adjustment limit sleeve; 44. Limit ring; 45. Buffer spring; 46. Trigger sleeve; 47. Guide column; 48. Adjustment gear; 49. Drive gear; 410. Adjustment motor; 5. Trapezoidal slide. DETAILED DESCRIPTION

[0048] Example

[0049] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0051] like Figure 1 As shown, an unmanned boarding bridge safety detection device includes a control terminal that communicates with a management unit and is used to obtain data of docked aircraft.

[0052] The device also includes an image detection unit 1, which includes a gimbal 11 arranged on the boarding bridge, and a camera 12 is arranged on the gimbal 11. The gimbal 11 and the camera 12 are both connected to the control terminal for identifying the position of the cabin door. The identification of the cabin door position is a conventional technical means in this field, so it will not be described in detail here.

[0053] like Figure 2-Figure 5 As shown, the device also includes a pick-up port safety detection unit 2 and a side safety detection unit 3. The pick-up port safety detection unit 2 includes a U-shaped fixed frame 21 with a speed detection component 24 and a rainfall detection component 25, which specifically detects the moving speed of the boarding bridge and the actual weather conditions. A first distance detection anti-collision mechanism is arranged on the crossbar of the U-shaped fixed frame 21. The first distance detection anti-collision mechanism includes a first distance detection component and a touch-stop component 4. The touch-stop component 4 is arranged opposite to the cabin door and is arranged alternately with the first distance detection module 22. The first distance detection module 22 is embedded in the crossbar. Two groups of distance detection components are arranged and are respectively arranged opposite to the cabin door and the ground, for detecting the distance between the pick-up port and the cabin door and the distance between the pick-up port and the ground. Each group of distance detection components includes a plurality of first distance detection modules 22 arranged in parallel, and the first distance detection module 22 is electrically connected to the control terminal. The two vertical rods of the U-shaped fixing frame 21 are provided with a second distance detection anti-collision mechanism 23, which is connected to the telescopic rain cover. The second distance detection anti-collision mechanism 23 includes a plurality of second distance detection modules 231 arranged in parallel, and the second distance detection modules 231 are connected to an electric push rod 232, which is arranged on the vertical rod through an elastic adjustment seat, so as to reduce the impact on the fuselage when contacting the fuselage, and the elastic adjustment seat includes a guide installation sleeve 233, and the guide installation sleeve 232 is provided on the vertical rod. A guide groove 234 is provided in the inner part of the guide block 235, and a guide block 235 is provided on the side of the cylinder body of the electric push rod 232. The guide block 235 is provided in the guide groove 234, and a positioning groove is provided in the guide groove 234. A locating groove is provided in the guide groove 234. A accommodating blind hole 238 is provided on the side of the guide block 235, and a positioning spring 239 and a positioning ball 2310 are provided in the accommodating blind hole 238. A limiting ring 44 is provided on the top of the accommodating blind hole 238. The inner diameter of the limiting ring 44 is smaller than the diameter of the positioning ball 2310, and the positioning ball 2310 is arranged opposite to the positioning groove. An adjusting spring 237 is installed inside the guide mounting sleeve 233 through an elastic adjusting plate 236. The adjusting spring 237 is arranged opposite to the bottom of the cylinder body of the electric push rod 232. When it does not contact the fuselage, the guide block 235 is stuck in the positioning groove in the guide groove 234 to ensure the reliability of distance detection. The guide mounting sleeve 233 is set on the vertical rod, and the telescopic end of the electric push rod 232 is connected to the telescopic rain cover through a connecting plate. The second distance detection module 231 and the electric push rod 232 are both electrically connected to the control terminal.

[0054] The side safety detection unit 3 includes a height adjustment drive motor 31, which is connected to a drive shaft 32, which is installed on the side of the boarding bridge, and a plurality of first meshing gears are arranged on the drive shaft 32, and a plurality of L-shaped rack lifting plates 33 are arranged relative to the plurality of first meshing gears, one end of the L-shaped rack lifting plate 33 is arranged as a trapezoidal structure and fixed with a tightening push rod 34, and one end of the L-shaped rack lifting plate 33 is slidably arranged in a trapezoidal slide groove 5 on the side of the boarding bridge, and a plurality of side distance detection modules 35 and a plurality of stop components 4 are linearly distributed on the L-shaped rack lifting plate 33, and the side distance detection modules 35 and the stop components 4 are arranged alternately. The side distance detection module 35, the height adjustment drive motor 31 and the tightening push rod 34 are all electrically connected to the control terminal. The height of the lifting plates at different positions can be adjusted according to the actual model setting when the boarding bridge is extended to ensure the reliability of the detection.

[0055] The stop assembly 4 includes a rubber contact head 41, which is fixedly connected to one end of a trigger threaded rod 42. An adjusting limit sleeve 43 is threadedly connected to the trigger threaded rod 42. Limit rings 44 are arranged at both ends of the adjusting limit sleeve 43. The adjusting limit sleeve 43 includes a trigger part and a connecting part arranged in sequence, and the outer diameter of the trigger part is larger than the outer diameter of the connecting part; the trigger part sleeve is provided with a buffer spring 45, one end of the buffer spring 45 is in contact with the limit ring 44, and the other end of the buffer spring 45 is arranged opposite to the trigger sleeve 46. A guide column 47 is arranged on the limit ring 44 that abuts against the trigger sleeve 46, and the guide column 47 is inserted on the trigger sleeve 46. The trigger sleeve 46 is arranged at the bottom of the connecting head and in the L-shaped rack lifting plate 33, and a trigger switch is arranged in the trigger sleeve 46; an adjusting gear 48 is arranged at the other end of the trigger threaded rod 42, and the adjusting gear 48 is meshed with the driving gear 49. The driving gear 49 is connected to the adjusting motor 410, and the adjusting motor 410 is fixed on the outside of the trigger sleeve 46. The trigger switch is connected to the boarding bridge driving mechanism of the boarding bridge, and the trigger switch and the regulating motor 410 are both electrically connected to the control terminal. The first distance detection module 22, the side distance detection module 35 and the second distance detection module 231 are all infrared distance sensors, ultrasonic distance sensors and ranging radars or a combination thereof, which improves the effectiveness of distance detection.

[0056] A stop triggering method for an unmanned boarding bridge safety detection device, the specific steps are as follows:

[0057] Step S1: The management machine sends the data of the aircraft to be docked to the control terminal, and the aircraft data includes the aircraft size information.

[0058] Step S2: The control terminal controls the gimbal 11 according to the aircraft size information so that the camera 12 collects aircraft images and identifies the door position.

[0059] Step S3: The control terminal controls the operation of the boarding bridge drive mechanism of the boarding bridge according to the door position and aircraft size information, and performs safety distance detection, rainfall detection and speed detection at the same time; calculates the taxiing distance according to the rainfall detection data and the speed detection data, and determines whether to trigger the boarding bridge drive mechanism to stop operating according to the detected distance data and the taxiing distance.

[0060] In step S3,

[0061] The calculation formula for sliding distance is as follows:

[0062]

[0063] Among them, S is the sliding distance, V is the current travel speed, μ is the sum of the ground friction factor related to rainfall and the friction factor of the boarding bridge itself, and g is the gravitational constant;

[0064] When d1 = S*sinθ + d0, the boarding bridge drive mechanism stops running, and the telescopic part of the boarding bridge continues to slide under the action of inertia;

[0065] Where d1 is the distance between the boarding gate and the cabin door, θ is the angle between the running direction of the boarding bridge and the centerline of the aircraft, and d0 is the set safety distance;

[0066] When d2=S*cosθ+d0, the boarding bridge driving mechanism stops moving, and after the fixed part and the receiving port of the boarding bridge rotate to the set angle, the boarding bridge driving mechanism drives the telescopic part to move;

[0067] The control terminal determines the door height and the engine height according to the aircraft size information, controls the boarding bridge driving mechanism according to the door height so that the height of the boarding bridge is consistent with the door height, and adjusts the height of the L-shaped rack lifting plate 33 according to the engine height;

[0068] In the stop assembly 4, the extension length of the trigger threaded rod 42 is adjusted by adjusting the motor 410 according to the set safety distance. When the first distance detection assembly and the second distance detection assembly fail and the rubber contact head 41 contacts an obstacle, the trigger threaded rod 42 drives the adjustment limit sleeve 43 to move inward, so that the trigger part triggers the trigger switch and the boarding bridge drive mechanism stops running.

[0069] When the boarding bridge moves toward the cabin door, the control terminal determines the fuselage curve according to the aircraft size information, and a number of electric push rods 232 extend a corresponding distance according to the fuselage curve and drive the retractable rain cover to unfold. When the distance detected by the second distance detection module 231 is equal to the set threshold, a number of electric push rods 232 simultaneously extend outward to a set length, so that the retractable rain cover fits the fuselage.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An unmanned boarding bridge safety detection device, including a control terminal communicating with a management, characterized in that: It also includes a pick-up gate security detection unit; The airport entrance safety detection unit includes a U-shaped fixing frame, a first distance detection anti-collision mechanism is arranged on the crossbar of the U-shaped fixing frame, the first distance detection anti-collision mechanism includes a first distance detection component and a touch-stop component, the touch-stop component is arranged opposite to the cabin door and is arranged alternately with the first distance detection module; A second distance detection anti-collision mechanism is provided on the two vertical rods of the U-shaped fixing frame, the second distance detection anti-collision mechanism is connected to the telescopic rain cover, the first distance detection anti-collision mechanism and the second distance detection anti-collision mechanism are both electrically connected to the control terminal, and a speed detection component and a rainfall detection component are also provided on the U-shaped fixing frame. The first distance detection component is provided in two groups and is respectively arranged opposite to the cabin door and the ground, and is used to detect the distance between the pick-up port and the cabin door and the distance between the pick-up port and the ground. Each group of distance detection components includes a plurality of first distance detection modules arranged in parallel, and the speed detection component, the rainfall detection component and the first distance detection module are all electrically connected to the control terminal; The second distance detection anti-collision mechanism includes a plurality of second distance detection modules arranged in parallel, the second distance detection modules are connected to the electric push rod, the electric push rod is arranged on the vertical rod through an elastic adjustment seat, the elastic adjustment seat includes a guide mounting sleeve, a guide groove is provided in the guide mounting sleeve, a guide block is provided on the side of the cylinder body of the electric push rod, the guide block is arranged in the guide groove, an adjustment spring is installed inside the guide mounting sleeve through an elastic adjustment plate, the adjustment spring is arranged opposite to the bottom of the cylinder body of the electric push rod, the guide mounting sleeve is arranged on the vertical rod, and the telescopic end of the electric push rod is connected to the telescopic rain cover through a connecting plate; The second distance detection module and the electric push rod are both electrically connected to the control terminal.

2. The unmanned boarding bridge safety detection device according to claim 1, characterized in that: It also includes a side safety detection unit, which includes a height adjustment drive motor, the height adjustment drive motor is connected to a drive shaft, the drive shaft is installed on the side of the boarding bridge, a plurality of first meshing gears are arranged on the drive shaft, a plurality of L-shaped rack lifting plates are arranged relatively to the plurality of first meshing gears, one end of the L-shaped rack lifting plate is arranged in a trapezoidal structure and is fixed with a tightening push rod, one end of the L-shaped rack lifting plate is slidably arranged in a trapezoidal slide groove on the side of the boarding bridge, a plurality of side distance detection modules and a plurality of stop components are linearly distributed on the L-shaped rack lifting plate, and the side distance detection modules and the stop components are arranged alternately; The side distance detection module, the height adjustment drive motor and the tightening push rod are all electrically connected to the control terminal.

3. The unmanned boarding bridge safety detection device according to claim 2 is characterized in that: The stop assembly includes a rubber contact head, which is fixedly connected to one end of the trigger threaded rod, an adjusting limit sleeve is threadedly connected to the trigger threaded rod, and limit rings are arranged at both ends of the adjusting limit sleeve. The adjusting limit sleeve includes a trigger part and a connecting part which are arranged in sequence, and the outer diameter of the trigger part is larger than the outer diameter of the connecting part; the trigger part sleeve is provided with a buffer spring, one end of the buffer spring is in contact with the limit ring, and the other end of the buffer spring is arranged opposite to the trigger sleeve, and a guide column is arranged on the limit ring which abuts against the trigger sleeve, and the guide column is inserted on the trigger sleeve, and the trigger sleeve is arranged at the bottom of the connecting head and in the L-shaped rack lifting plate, and a trigger switch is arranged in the trigger sleeve; an adjusting gear is arranged at the other end of the trigger threaded rod, and the adjusting gear is meshed with the driving gear, and the driving gear is connected with the adjusting motor, and the adjusting motor is fixed on the outside of the trigger sleeve; The trigger switch is connected to the boarding bridge driving mechanism of the boarding bridge, and the trigger switch and the regulating motor are both electrically connected to the control terminal.

4. The unmanned boarding bridge safety detection device according to claim 3 is characterized in that: A positioning groove is arranged in the guide groove, a blind hole is opened on the side of the guide block, a positioning spring and a positioning ball are arranged in the blind hole, a limiting ring is arranged on the top of the blind hole, the inner diameter of the limiting ring is smaller than the diameter of the positioning ball, and the positioning ball is arranged opposite to the positioning groove.

5. The unmanned boarding bridge safety detection device according to claim 4 is characterized in that: It also includes an image detection unit, which includes a pan / tilt mounted on the boarding bridge, a camera mounted on the pan / tilt, and both the pan / tilt and the camera are connected to the control terminal for identifying the position of the cabin door; The camera is electrically connected to the control terminal.

6. The unmanned boarding bridge safety detection device according to claim 5 is characterized in that: The first distance detection module, the side distance detection module and the second distance detection module are all one or a combination of infrared distance sensors, ultrasonic distance sensors and ranging radars.

7. A stop triggering method for an unmanned boarding bridge safety detection device according to claim 6, characterized in that: The specific steps are as follows: Step S1: The management machine sends the data of the aircraft to be docked to the control terminal, and the aircraft data includes the aircraft size information; Step S2: the control terminal controls the PTZ according to the aircraft size information so that the camera collects aircraft images and identifies the door position; Step S3: The control terminal controls the operation of the boarding bridge drive mechanism of the boarding bridge according to the door position and aircraft size information, and performs safety distance detection, rainfall detection and speed detection at the same time; calculates the taxiing distance according to the rainfall detection data and the speed detection data, and determines whether to trigger the boarding bridge drive mechanism to stop operating according to the detected distance data and the taxiing distance.

8. A stop triggering method according to claim 7, characterized in that: In step S3, The calculation formula of sliding distance is as follows: in, is the sliding distance, is the current travel speed, is the sum of the ground friction factor related to rainfall and the friction factor of the boarding bridge itself, is the gravitational constant; when When the boarding bridge driving mechanism stops running, the telescopic part of the boarding bridge continues to slide under the action of inertia; in, is the distance between the pick-up gate and the cabin door, It is the angle between the running direction of the boarding bridge and the centerline of the aircraft. To set a safe distance; when When the boarding bridge driving mechanism stops moving, and after the fixed part and the receiving port of the boarding bridge rotate to a set angle, the boarding bridge driving mechanism drives the telescopic part to move; The control terminal determines the door height and the engine height according to the aircraft size information, controls the boarding bridge driving mechanism according to the door height so that the height of the boarding bridge is consistent with the door height, and adjusts the height of the L-shaped rack lifting plate according to the engine height; In the stop component, the extension length of the trigger threaded rod is adjusted by adjusting the motor according to the set safety distance. When the first distance detection component and the second distance detection component fail and the rubber contact head contacts an obstacle, the trigger threaded rod drives the adjustment limit sleeve to move inward, so that the trigger part triggers the trigger switch and the boarding bridge drive mechanism stops running; When the boarding bridge moves toward the cabin door, the control terminal determines the fuselage curve according to the aircraft size information, and several electric push rods extend a corresponding distance according to the fuselage curve and drive the retractable rain cover to unfold. When the distance detected by the second distance detection module is equal to the set threshold, several electric push rods extend outward to the set length at the same time, so that the retractable rain cover fits the fuselage.

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