Underground parking space guiding system based on traffic internet of things

Abstract

This invention provides an underground parking guidance system based on the Internet of Things for transportation, including a barrier gate system, a parking space guidance system, and a parking guidance system. The barrier gate system includes barrier gate components installed at the entrance and exit of the garage. Each barrier gate component includes a base mounting plate, with symmetrically staggered lifting and blocking mechanisms arranged at one end of the top of the base mounting plate. A camera is installed on each lifting and blocking mechanism. The two lifting and blocking mechanisms are used to block the garage entrance and exit, respectively. Through the design of area-corresponding buttons, when drivers enter the underground garage to park, the parking space guidance system guides the vehicle to the assigned parking space. The parking guidance system on the parking space then guides the vehicle to the parking space assigned by the control system, forming a chain-like guidance path that directly guides the vehicle to the assigned parking space. This solution completely eliminates the phenomenon of vehicles blindly searching for empty spaces within the target area, alleviating congestion at its source.

Description

Technical Field

[0001] This invention relates to the field of parking guidance technology, and more specifically to an underground parking guidance system based on the Internet of Things for transportation. Background Technology

[0002] With the acceleration of urbanization and the continuous growth of motor vehicle ownership, underground parking lots, as an important facility for solving the problem of urban parking difficulties, are constantly expanding in scale and becoming increasingly complex in structure. Existing underground parking guidance systems typically consist of gate barriers at the entrance and exit of the parking garage and several directional indicator screens suspended and fixed on the walls and ceilings of the parking garage. Among them, the gate barriers are connected to the back-end control system to detect the number of parking spaces in the parking garage and guide vehicles to the parking spaces near the desired buildings through the directional indicator screens, so as to ensure that vehicles can park smoothly after entering the garage.

[0003] However, existing underground parking guidance systems still have the following shortcomings in actual use:

[0004] Data collection is scattered and lacks interconnectivity, making it difficult to achieve dynamic integration and optimized allocation of global parking resources. It is also difficult to accurately guide users to specific vacant parking spaces, requiring users to search again within the target area, which exacerbates traffic congestion. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an underground parking guidance system based on the Internet of Things for transportation, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An underground parking guidance system based on the Internet of Things for transportation includes a gate system and a parking guidance system;

[0008] The barrier gate system includes barrier gate components installed at the entrance and exit of the garage. Each barrier gate component includes a base mounting plate. A lifting and blocking mechanism is symmetrically and staggeredly arranged on one end of the top of the base mounting plate. A camera is installed on the lifting and blocking mechanism. The two lifting and blocking mechanisms are used to block the entrance and exit of the garage, respectively. A cabinet is fixedly installed on the other end of the top of the base mounting plate. An entrance information screen is fixedly installed on the inclined surface of the cabinet. An area selection panel is fixedly installed on the inclined surface and below the entrance information screen. The area selection panel has multiple area corresponding buttons, which correspond to multiple parking spaces in the garage.

[0009] The parking guidance system includes multiple path guidance units and parking lock components. The multiple path guidance units are fixedly installed on the front side of the branch intersection in the garage. Each of the multiple path guidance units is used to guide the vehicle to the next path guidance unit. Based on an external control system with electrical connection, the vehicle is guided to the corresponding parking space by forming a chain guidance path.

[0010] The parking lock assembly is used to install on parking spaces to block or unblock the parking space entrance and guide vehicles to park.

[0011] This invention provides an underground parking guidance system based on the Internet of Things for transportation. Compared with existing technologies, it has the following advantages:

[0012] 1. By designing area-specific buttons, when drivers enter the underground parking garage, the external control system allocates parking spaces to vehicles entering the garage. After the driver selects a target area, the external control system dynamically allocates the optimal available parking space based on global parking space data and synchronizes the allocation information to the parking guidance system. This system consists of path guidance units distributed at the garage's branching points. Each unit displays the target parking space number on a guidance information screen and provides turning instructions via arrow indicator screens, forming a chain-like guidance path that directly guides vehicles to their assigned parking spaces. This solution completely eliminates the phenomenon of vehicles blindly searching for available spaces within the target area, alleviating congestion in the passageways from the source.

[0013] 2. To address the issue of dust easily obscuring indicator screens in underground parking environments, the vehicle dust removal mechanism is designed so that if dust accumulates on the vehicle surface after a long period of parking, drivers can choose to have the dust removed by blowing away the floating dust when paying with Alipay or WeChat. This allows the airflow to blow away the floating dust on the side windows, reducing the amount of dust on the windows, improving the clarity of the side windows, and enhancing driving safety.

[0014] 3. The screen cleaning mechanism is designed to clean dust adhering to the surfaces of multiple guidance information screens and multiple arrow indicator screens. The cleaning head protective cover is designed to store and block dust when cleaning multiple guidance information screens and multiple arrow indicator screens. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of the barrier gate assembly of the present invention is shown;

[0017] Figure 2 A schematic diagram of the installation structure of the arm connecting frame of the present invention is shown;

[0018] Figure 3 A schematic diagram of the path guidance unit of the present invention is shown;

[0019] Figure 4 A schematic diagram of the mounting structure of the direction indicator screen of the present invention is shown;

[0020] Figure 5 A schematic diagram of the parking lock assembly of the present invention is shown;

[0021] Figure 6 A schematic diagram of the mounting structure of the baffle drive motor of the present invention is shown;

[0022] Figure 7 A schematic diagram of the installation structure of the cleaning head protective cover of the present invention is shown;

[0023] Figure 8 A schematic diagram of the installation structure of the sponge block of the present invention is shown;

[0024] Figure 9 A three-dimensional structural schematic diagram of the base mounting plate of the present invention is shown;

[0025] Figure 10 A schematic diagram of the installation structure of the exhaust filter element of the present invention is shown;

[0026] Figure 11 A schematic diagram of the installation structure of the air inlet filter element of the present invention is shown;

[0027] Figure 12 A schematic diagram of the installation structure of the vehicle dust removal mechanism of the present invention is shown;

[0028] As shown in the figure:

[0029] 1. Barrier gate assembly; 11. Base mounting plate; 12. Lifting and blocking mechanism; 121. Gate seat; 122. Main drive shaft; 123. Main gate arm; 124. Auxiliary gate arm; 125. Linkage rod; 126. Bracket; 127. Hinge rod; 128. Arm connecting frame; 13. Cabinet; 14. Camera 1; 15. Entrance information screen; 16. Area selection panel;

[0030] 2. Path guidance unit; 21. Canopy fixing plate; 22. Suspension column; 23. Guide screen housing; 231. Mounting groove; 232. Clip hole; 25. Clip-on piece; 251. Clip block; 252. Receiving groove; 253. Spring telescopic rod; 254. Clip block; 26. Camera 2;

[0031] 3. Parking lock assembly; 31. Underground base; 32. Baffle storage slot; 33. Mounting cavity; 34. Hinge shaft; 35. Limit baffle; 36. Baffle drive motor; 37. Parking status screen; 38. Distance sensor;

[0032] 4. Screen cleaning mechanism; 41. Mounting base; 42. Rotating shaft; 43. Sprocket; 44. Chain; 45. Cleaning drive motor; 46. Connecting base; 47. Sponge shell; 48. Sponge block;

[0033] 5. Cleaning head protective cover; 51. Baffle plate; 52. Rotating rod; 53. Baffle block; 531. Baffle groove;

[0034] 6. Inlet base; 61. Dust collection chamber; 62. Dust collection duct;

[0035] 7. Vehicle dust removal mechanism; 71. Ventilation box; 711. Inspection box door; 712. Filter element mounting frame; 713. Inlet air filter element; 714. Limiting frame; 72. Blower; 73. Main air supply duct; 74. First rotating flexible hose; 75. Main brake arm duct; 76. Second rotating flexible hose; 77. Secondary brake arm duct; 78. Downward spray duct;

[0036] 8. Floor vacuuming unit; 81. Vacuum pump; 82. Negative pressure dust collection pipe; 83. Filter screen limiting plate; 84. Exhaust filter element; 85. Top cover support column; 86. Dust collection grille top cover; 861. Dust collection air inlet; 87. Removable grille cover. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0038] To address the problem of data dispersion and difficulty in accurately guiding data to specific empty parking spaces, which leads to congestion in existing systems, this invention achieves dynamic allocation through an innovative design of the barrier gate system.

[0039] Combination Figures 1-12 As shown, the underground parking guidance system based on the Internet of Transportation Internet of Things provided by the present invention includes a barrier gate system and a parking guidance system. Both the barrier gate system and the parking guidance system are connected to an external control system. The external control system is also used for the vehicle parking billing module and the payment module. People can access the external control system payment module for self-service payment by scanning a QR code with WeChat or Alipay.

[0040] The barrier gate system includes barrier gate components 1 installed at the entrance and exit of the garage. The barrier gate components 1 include a base mounting plate 11. A lifting and blocking mechanism 12 is symmetrically and staggeredly arranged on one end of the top of the base mounting plate 11. A camera 14 is installed on the lifting and blocking mechanism 12. The two lifting and blocking mechanisms 12 are used to block the entrance and exit of the garage, respectively. A cabinet 13 is fixedly installed on the other end of the top of the base mounting plate 11. An entrance information screen 15 is fixedly installed on the inclined surface of the cabinet. An area selection panel 16 is fixedly installed on the inclined surface and below the entrance information screen 15. The area selection panel 16 has multiple area corresponding buttons, which correspond to multiple parking spaces in the garage.

[0041] The parking guidance system includes multiple path guidance units 2, which are fixedly installed on the front side of the fork in the garage. Each path guidance unit 2 is used to guide the vehicle to the next path guidance unit 2, so as to guide the vehicle to the corresponding parking space.

[0042] The parking guidance system also includes a parking lock assembly, which is installed on the parking space and is used to block or unblock the parking space entrance and guide the vehicle to park.

[0043] When a driver enters the underground parking garage to park, the external control system, based on electrical connections, guides the vehicle directly to its assigned parking space by forming a chain-like guidance path. The specific process is as follows:

[0044] S1. Information Collection and Dynamic Allocation of Optimal Parking Spaces:

[0045] S1-1, The external control system synchronously receives two types of core information: vehicle license plate information collected by camera 1, which serves as the unique identifier of the vehicle, and target area signal triggered by the driver through the area selection panel, which serves as the parking preference area.

[0046] S1-2. Establish a mapping between vehicle IDs and target areas. Then, call the real-time global database of available parking spaces in the garage, which includes at least the coordinates of each parking space, its corresponding area, and real-time route congestion coefficient data. Complete the allocation according to the following logic:

[0047] The process involves filtering available parking spaces within the target area from the database, excluding reserved spaces, temporarily locked spaces due to malfunctions, etc. The specific steps are as follows:

[0048] First, the encoded string of the target area in the association mapping is extracted and precisely matched with the area field of the parking space in the database to initially filter out all parking spaces in that area. Second, the status verification process is initiated. Based on the external control system, the status labels of the above parking spaces are read one by one according to the following logical rules: For parking spaces marked "reserved", the intersection of the reserved time period and the current time needs to be further checked. If the reserved time includes the current time, it is removed. For parking spaces marked "faulty", the fault type needs to be confirmed, including mechanical faults, communication faults, etc., and the maintenance status, including not reported for repair and under maintenance. For parking spaces marked "temporarily locked" (such as associated parking spaces where the previous vehicle has not completed payment), the locking time limit needs to be verified. If the lock is not released after more than 15 minutes, it is removed. Third, after N=50 rounds of verification, only parking spaces marked "empty parking spaces" are retained for N=3 consecutive data refresh cycles, thus forming a valid candidate set of empty parking spaces, and a unique temporary identifier number is generated for each candidate parking space.

[0049] The optimal solution is calculated based on the principles of shortest distance and most unobstructed path. The specific operation is as follows:

[0050] The first step is to calculate the actual path length of each empty parking space, starting from the garage entrance. Based on the external control system, the garage path topology map (including path turning angle, speed limit signs, and obstacle coordinates) in the database is called first. For each parking space in the effective empty parking space candidate set, multiple feasible paths from the entrance to the parking space are planned using the Dijkstra algorithm. A maximum of 3 alternative paths are generated. Each path is decomposed into a node chain of {entrance gate, path node 1, path node 2, ..., target parking space}. Then, based on the actual path length parameter in the edge attributes of the pre-existing topology map, the path length between each node is accumulated to obtain the total length of each path. Finally, the shortest path length is selected as the distance parameter of the parking space.

[0051] The second step involves receiving real-time monitoring data from camera two, based on an external control system (set to transmit one frame containing vehicle outlines every 100 milliseconds). Image recognition technology is used to count the number of vehicles passing through each lane per unit time, converted to vehicles per minute. This data is then compared with the lane's designed capacity (calculated based on lane width and speed limit standards, in vehicles per minute), and the congestion coefficient is calculated using the following formula: For a path containing multiple channels, assuming there are n channels in the path, the congestion coefficient of the i-th channel is C. i The channel length is L i The final congestion coefficient of the entire path is then... In the formula, This is the total path length. .

[0052] S1-3, Through the constructed comprehensive scoring model The comprehensive score is obtained, where L is the shortest path length (static distance parameter), C is the dynamic congestion coefficient, and W is the dynamic congestion coefficient. C W is the weight for the congestion coefficient. L The shortest path length is used as the weight, and all scores are sorted in ascending order using the bubble sort algorithm. The parking space with the lowest score is selected as the optimal empty parking space. If multiple parking spaces have the same score, the real-time availability time (duration of the empty parking space status) of the parking spaces needs to be compared. The parking space with the longest availability time is selected first. An allocation result containing {vehicle ID, target parking space number, complete path node sequence (including path guidance unit IDs of all necessary forks)} is generated to dynamically allocate the optimal parking space to balance traffic efficiency.

[0053] S1-4. The system stores the result in the database and pushes it synchronously to the path guidance unit cluster and the parking lock component cluster of the target parking space in the parking guidance system.

[0054] S2, Chained Guide Path Node Configuration:

[0055] Based on the external control system, the path node sequence is first analyzed to clarify the node chain from the entrance to the target parking space, ensuring that each node is a necessary fork in the road during vehicle travel;

[0056] Secondly, configure the path guidance units sequentially according to the node order: The first node (the fork near the entrance): the guidance information screen displays the target parking space number, and the arrow indicator screen illuminates, pointing in the direction of "next node (e.g., node A)" (e.g., a straight arrow); the middle node (e.g., node A → node B): the guidance information screen continuously displays the target parking space number, and the arrow indicator screen precisely points in the direction of "node B" (e.g., a left-turn arrow), ensuring continuity with the guidance direction of the previous node, forming a "node relay"; the last node (the fork immediately adjacent to the target parking space): the guidance information screen displays the target parking space number, and the arrow indicator screen illuminates, pointing in the direction of "target parking space" (e.g., a right-turn arrow, indicating the entrance to the parking space's passage).

[0057] Finally, the system activates the parking lock component of the target parking space, the parking space status screen displays "Assigned + Vehicle ID", the limit barrier remains vertical (to prevent other vehicles from occupying it), and the guidance path configuration is completed, alleviating channel congestion from the source.

[0058] Combination Figures 1-2As shown, the lifting and stopping mechanism 12 includes a brake seat 121 fixedly installed on the top of the base mounting plate 11. An arm connecting frame 128 is rotatably mounted on one side of the brake seat 121 via a main drive shaft 122. Specifically, a motor is fixedly installed inside the brake seat 121, and the main drive shaft 122 is fixedly connected to the output shaft of the motor. The motor is controlled by an external control system. A main brake arm 123 is inserted into the arm connecting frame 128, and the main brake arm 123 is located away from the arm connecting frame. One end of 128 is rotatably connected to a secondary gate arm 124. A linkage rod 125 is fixedly installed on the top of the secondary gate arm 124, near the side close to the main gate arm 123. A bracket 126 is fixedly installed on the gate seat 121, on the side of the main drive shaft 122 away from the secondary gate arm 124. A hinge rod 127 is hinged to the bracket 126, above the main gate arm 123. The other end of the hinge rod 127 is hinged to the linkage rod 125. When the main gate arm 123 is horizontal, the hinge... The lever 127 is horizontal, and the camera 14 is fixedly installed on the top of the gate seat 121. In use, the external control system controls the motor to rotate the main drive shaft 122 on the gate seat 121, making the main gate arm 123 vertical. At this time, the hinge lever 127 rotates on the bracket 126, and the other end of the hinge lever 127 rotates with the linkage rod 125, causing the auxiliary gate arm 124 to rotate with the main gate arm 123, thus allowing the auxiliary gate arm 124 to rotate relative to the main gate arm 123. When the free end of 23 rotates to a horizontal position, the blockage of the garage entrance is removed. Conversely, when the main drive shaft 122 rotates on the gate seat 121, making the main gate arm 123 horizontal, the hinge rod 127 rotates on the bracket 126. The other end of the hinge rod 127 rotates with the linkage rod 125, and the auxiliary gate arm 124 rotates with the main gate arm 123, making the auxiliary gate arm 124 rotate horizontally at the free end of the main gate arm 123, thereby blocking the garage entrance.

[0059] Combination Figures 3-4As shown, the path guidance unit 2 includes a ceiling fixing plate 21 for fixed installation on the garage wall. Vertical suspension columns 22 are symmetrically fixed to the bottom of the ceiling fixing plate 21. Guide screen housings 23 are fixed to the bottom of the two suspension columns 22. A mounting groove 231 is provided on one side of the guide screen housing 23. A direction indicator screen is inserted into the guide screen housing 23 and located within the mounting groove 231. A snap-fit ​​component 25 is installed on the direction indicator screen. The snap-fit ​​component 25 is used to fix or unfix the direction indicator screen to the guide screen housing 23. The direction indicator screen is located away from... A guide information screen is fixedly installed in a horizontal linear array on one side of the mounting slot 231. An arrow indicator screen is fixedly installed on the direction indicator screen and below the guide information screen. Specifically, the arrow indicator screen is equipped with left-turn directional arrow lights, straight-line directional arrow lights, and right-turn directional arrow lights. A second camera 26 is fixedly installed on the top of the guide screen housing 23 and between the two opposite sides of the suspension columns 22. It should be noted that when installing the path guidance unit 2, the ceiling fixing plate 21 should be fixedly installed on the top of the garage interior wall, and the second camera 26 should be ensured to be unobstructed.

[0060] Furthermore, the latching component 25 includes latching blocks 251 symmetrically fixedly installed on the side of the direction indicator screen away from the guide information screen. The guide screen housing 23 has symmetrically opened latching holes 232, each communicating with the mounting groove 231. The two latching blocks 251 can respectively pass through the two latching holes 232 and extend to the outside of the guide screen housing 23. A receiving groove 252 is opened on the side of the latching block 251 extending to the outside of the guide screen housing 23. A spring telescopic rod 253 is fixedly installed on the latching block 251 and located within the receiving groove 252. A locking block 254 extending to the outside of the receiving groove 252 is fixedly installed at the end of the telescopic rod 253. The side of the locking block 254 away from the direction indicator screen is arc-shaped. The locking block 254 can be hidden inside the receiving groove 252. When the direction indicator screen is in contact with the inner wall of the mounting groove 231, the locking block 254 can be locked with the guide screen housing 23. In use, when installing the direction indicator screen, the two locking blocks 251 are respectively passed through the two locking holes 232. When the two locking blocks 254 contact the guide screen housing 23, the locking blocks... The curved surface on the 254 abuts against the guide screen housing 23, continuously pushing the direction indicator screen into the mounting slot 231. During the installation of the direction indicator screen, the two locking blocks 254 are respectively hidden in the receiving slots 252 on the two locking blocks 251. The two spring telescopic rods 253 deform under force. When the direction indicator screen is in contact with the inner wall of the mounting slot 231, the locking blocks 254 are displaced to the outside of the guide screen housing 23, and the two spring telescopic rods 253 return to their natural state, pushing the two locking blocks 254. When the ends of 4 are displaced to the outside of the two receiving slots 252, the locking block 254 can be locked with the guide screen housing 23, thereby fixing the direction indicator screen. Conversely, when disassembling the direction indicator screen, force is applied to the two locking blocks 254 respectively, so that the two locking blocks 254 are hidden in the two receiving slots 252 respectively. Pushing the locking block 251 to move in the direction of the direction indicator screen can push the direction indicator screen outward of the mounting slot 231, thereby achieving the disassembly effect of the direction indicator screen. The operation is simple.

[0061] Combination Figures 5-6As shown, the parking guidance system also includes a parking lock assembly 3, which includes an underground base 31 for fixed installation on the parking space ground. The top of the underground base 31 has a baffle storage groove 32. The top of the underground base 31 and one side of the baffle storage groove 32 has an installation cavity 33. A limit baffle 35 is hinged to the underground base 31 and inside the baffle storage groove 32 via a hinge shaft 34. The limit baffle 35 can be hidden inside the baffle storage groove 32. A baffle drive motor 36 for driving the hinge shaft 34 to rotate is fixedly installed in the installation cavity 33. A parking status screen 37 is fixedly installed on the limit baffle 35. A distance measuring sensor 38 is fixedly installed on the limit baffle 35 and above the parking status screen 37. Specifically, when the underground base 31 is installed on the ground of the parking space, the distance between the underground base 31 and the front side line of the parking space is 50CM. When the distance measuring sensor 38 detects that the distance between the vehicle and the limiting baffle 35 is less than or equal to 50CM, the external control system controls the baffle drive motor 36 to work, driving the hinge shaft 34 to rotate, so that the limiting baffle 35 is hidden in the baffle storage groove 32. When the distance measuring sensor 38 detects that the distance between the vehicle and the limiting baffle 35 is greater than 50CM, the external control system controls the baffle drive motor 36 to work, driving the hinge shaft 34 to rotate, so that the limiting baffle 35 rotates to a vertical state.

[0062] Combination Figures 7-8 As shown, a screen cleaning mechanism 4 for the directional indicator screen is installed at the bottom of the guide screen housing 23. The screen cleaning mechanism 4 is connected to an external control system and is used to clean the dust attached to multiple guide information screens and multiple arrow indicator screens.

[0063] The screen cleaning mechanism 4 includes a mounting base 41 fixedly installed at the bottom of the guide screen housing 23 by screws. Vertical rotating shafts 42 are symmetrically rotatably installed on the mounting base 41 on both sides of the guide screen housing 23. Sprockets 43 are coaxially fixedly connected to the rotating shafts 42. Chains 44 are externally connected to the two sprockets 43. A cleaning drive motor 45 connected to one of the rotating shafts 42 is fixedly installed at the bottom of the mounting base 41. A connecting seat 46 is fixedly installed at the top of the chain 44. A sponge shell 47 is fixedly installed at the top of the connecting seat 46 by screws. A sponge block 48 is fixedly installed near the guide screen housing 23. Specifically, when the sponge shell 47 is located on the side of the guide screen housing 23 near the mounting groove 231, the sponge block 48 can contact multiple guide information screens and multiple arrow indicator screens.

[0064] A cleaning head protective cover 5 is installed on the side of the guide screen housing 23 away from the mounting groove 231, which acts on the sponge block 48. The cleaning head protective cover 5 includes a baffle plate 51 that is symmetrically fixed in the horizontal direction on the side of the guide screen housing 23 away from the mounting groove 231. The distance between the two baffle plates 51 is the same as the height of the sponge shell 47. A vertical rotating rod 52 is rotatably installed between the two baffle plates 51. A blocking block 53 is fixedly installed on the outer wall of the rotating rod 52 between the opposite sides of the two baffle plates 51. The outer wall of the blocking block 53 has three blocking grooves 531 arranged in a ring along the axis of the rotating rod 52. The end of the sponge shell 47 can be hidden in the blocking groove 531. The inner wall of the blocking groove 531 has an arc surface at its opening end. The outer wall of the blocking block 53 is also arc surface between two adjacent blocking grooves 531.

[0065] Combination Figures 9-12 As shown, to improve the departure experience and avoid dust pollution, this invention integrates a vehicle dust removal mechanism 7 and a matching ground dust collection unit 8 into the exit gate assembly 1. The vehicle dust removal mechanism 7 is installed on the base mounting plate 11 and is communicatively connected to an external control system. Specifically, the vehicle dust removal mechanism 7 is used to blow away dust adhering to the vehicle surface. When personnel access the external control system's payment module via WeChat or Alipay for self-service payment, they can choose whether to activate the vehicle dust removal mechanism 7. The air outlet of the vehicle dust removal mechanism 7 is located on the gate assembly 1 near the exit.

[0066] The vehicle dust removal mechanism 7 includes a ventilation box 71, a blower 72, a main air supply duct 73, a first rotating hose 74, a main brake arm duct 75, a second rotating hose 76, a secondary brake arm duct 77, and a downward spray duct 78. The ventilation box 71 is fixedly installed on the base mounting plate 11, and the blower 72 is fixedly installed on the ventilation box 71. The air outlet of the blower 72 is connected to the interior of the ventilation box 71 via a connecting pipe. The main air supply duct 73 is connected through one side of the ventilation box 71 and is fixed to the brake seat 121 by a fixing clip. On one side, a main brake arm duct 75 is fixedly installed on the side wall of the main brake arm 123, and a secondary brake arm duct 77 is fixedly installed on the side wall of the secondary brake arm 124. One end of the main brake arm duct 75 is connected to the main brake arm duct 75 through a first rotating hose 74, and the other end is connected to the secondary brake arm duct 77 through a second rotating hose 76. At the bottom of the secondary brake arm duct 77, multiple downward spray pipes 78, all of which are connected to its interior, are fixedly installed in a horizontal linear array. Finally, the array of downward spray pipes 78 sprays air vertically to the side windows of the vehicle to remove surface dust.

[0067] Furthermore, the side of the ventilation box 71 away from the main air supply duct 73 is open. A maintenance door 711 is hinged to the ventilation box 71 for sealing its open end. The maintenance door 711 is fixed to the ventilation box 71 by a snap fastener. An annular sealing groove is formed on the side of the ventilation box 71 near its open end and outside the open end. An annular sealing gasket is fixedly installed on the ventilation box 71 within the annular sealing groove. When the maintenance door 711 seals the open end of the ventilation box 71, the annular sealing gasket and the maintenance door 711 come into contact, increasing the pressure between the maintenance door 711 and the ventilation box 71. For airtightness, a filter element mounting frame 712 is fixedly installed inside the ventilation box 71 on the side near the main air supply duct 73 and on the outside of the main air supply duct 73. An air inlet filter element 713 for blocking the main air supply duct 73 is inserted into the filter element mounting frame 712, and the cross section between the outer wall of the air inlet filter element 713 and the inner wall of the filter element mounting frame 712 is in contact. A limiting frame 714 for limiting the position of the air inlet filter element 713 is fitted on the outside of the filter element mounting frame 712. The limiting frame 714 has an air vent that communicates with the inner side of the filter element mounting frame 712, and the limiting frame 714 and the filter element mounting frame 712 are fixed together by screws.

[0068] Furthermore, it also includes an inlet base 6, which is embedded in the ground. Specifically, when installing the inlet base 6, a pit is first dug in the ground, and the inlet base 6 is placed in the pit so that the top of the inlet base 6 is flush with the ground. The base mounting plate 11 is fixedly installed on the top of the inlet base 6. A ground dust collection unit 8 is provided on the top of the inlet base 6 and below the secondary gate arm air duct 77. The ground dust collection unit 8 is communicatively connected to the external control system. The ground vacuuming unit 8 includes a vacuum pump 81, a negative pressure dust collection pipe 82, a filter screen limiting plate 83, an exhaust filter element 84, a top cover support column 85, a dust collection grid top cover 86, and a detachable grid cover plate 87. A vacuum chamber 61 is located on the top of the inlet base 6 and below the secondary damper arm duct 77. Dust collection ducts 62 are symmetrically located on both sides of the top of the inlet base 6 and on both sides of the secondary damper arm duct 77. A vacuum pump 81 is fixedly installed inside the vacuum chamber 61. A negative pressure dust collection pipe 82, running horizontally through the vacuum chamber 61, is fixedly installed inside the inlet base 6. Both ends of the negative pressure dust collection pipe 82 pass through the adjacent sides of the two dust collection ducts 62, and the ends of the negative pressure dust collection pipe 82 are flush with the sidewalls of the dust collection ducts 62. The air inlet of the vacuum pump 81 is connected to the negative pressure dust collection pipe 82 via an air inlet pipe. Filters are symmetrically fixed inside the dust collection ducts 62. The limiting plate 83 has two filter limiting plates 83 with an exhaust filter 84 in a slot on one side near the negative pressure dust collection pipe 82. Both the exhaust filter 84 and the inlet filter 713 are high-efficiency filters. The exhaust filter 84 blocks the negative pressure dust collection pipe 82 and is in contact with the side wall of the dust collection duct 62. The bottom of the dust collection duct 62 and the other side of the filter limiting plate 83 are symmetrically fixed with top cover support columns 85. The top of the top cover support columns 85 is flush with the top of the inlet base 6. The top of the two top cover support columns 85 is fixed with screws to a dust collection grille top cover 86 that blocks the top of the dust collection duct 62. The top of the dust collection grille top cover 86 is arc-shaped and has several suction air inlets 861 that are connected to its interior. The top of the inlet base 6 is equipped with a detachable grille cover plate 87 for sealing the top opening of the suction chamber 61.

[0069] This can be understood as follows: the synchronously activated ground dust collection unit collects falling dust through the suction air inlet on the dust collection grille cover, and then the dust is sucked in by a vacuum pump through the dust collection duct. After the dusty airflow is filtered through the exhaust filter, clean air is discharged, while dust is retained in the negative pressure dust collection pipe. The removable grille cover facilitates regular cleaning of the dust collection chamber. This integrated design improves the light transmittance of the windows to ensure driving safety while preventing dust from spreading and polluting the environment.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An underground parking guidance system based on the Internet of Things for transportation, characterized in that, This includes barrier gate systems and parking guidance systems; The barrier gate system includes barrier gate components installed at the entrance and exit of the garage. Each barrier gate component includes a base mounting plate. A lifting and blocking mechanism is symmetrically and staggeredly arranged on one end of the top of the base mounting plate. A camera is installed on the lifting and blocking mechanism. The two lifting and blocking mechanisms are used to block the entrance and exit of the garage, respectively. A cabinet is fixedly installed on the other end of the top of the base mounting plate. An entrance information screen is fixedly installed on the inclined surface of the cabinet. An area selection panel is fixedly installed on the inclined surface and below the entrance information screen. The area selection panel has multiple area corresponding buttons, which correspond to multiple parking spaces in the garage. The parking guidance system includes multiple path guidance units and parking lock components. The multiple path guidance units are fixedly installed on the front side of the branch intersection in the garage. Each of the multiple path guidance units is used to guide the vehicle to the next path guidance unit. Based on an external control system with electrical connection, the vehicle is guided to the corresponding parking space by forming a chain guidance path. The parking lock assembly is used to be installed in the parking space to block or unblock the parking space entrance and guide the vehicle to park. The specific process of forming a chain-like guidance path and directly guiding vehicles to their assigned parking spaces is as follows: The first step is information collection and mapping establishment: based on the vehicle license plate information collected synchronously by the external control system as the unique identifier of the vehicle, and the target area signal triggered by the driver through the area selection panel; Establish a mapping between vehicle IDs and target areas; The second step is to filter available parking spaces: call the real-time database, extract the coded string of the target area in the association mapping, and perform precise matching with the area field of the parking space in the database to initially filter out all parking spaces in the target area. Initiate the status verification process, read the status tags of all parking spaces one by one to form a valid candidate set of empty parking spaces, and assign a unique temporary identifier number to each candidate parking space; The third step is to calculate the optimal parking space: Based on the principles of shortest distance and unobstructed path, a comprehensive scoring model is constructed. All scores are sorted in ascending order using the bubble sort algorithm, and the parking space with the lowest score is selected as the optimal empty parking space. An allocation result containing {vehicle ID, target parking space number, and complete path node sequence} is generated. The fourth step is result storage and push: the allocation results are stored in the database and simultaneously pushed to the path guidance unit and the parking lock component of the target parking space in the parking guidance system; Step 5, Chain-guided path node configuration: Based on the external control system, the path node sequence is parsed to determine the node chain from the entrance to the target parking space. Each path guidance unit is configured in sequence according to the node order to complete the guidance path configuration. In the third step, by integrating the static distance parameters generated by the Dijkstra path planning algorithm with the dynamic congestion coefficient calculated based on real-time traffic flow monitoring, a scoring model for shortest distance and smooth path is constructed. This allows for the dynamic allocation of optimal parking spaces to balance traffic efficiency. The specific operation is as follows: First, distance parameter calculation: Starting from the garage entrance, the garage passage topology map in the database is called. For each parking space in the effective empty parking space candidate set, the Dijkstra algorithm is used to plan a feasible path from the entrance to the parking space, generating a maximum of 3 alternative paths. Each path is decomposed into a node chain of {entrance gate, passage node 1, passage node 2, ..., target parking space}. Based on the actual passage length parameter in the edge attribute of the topology map, the passage length between nodes is accumulated to obtain the total length of each path. The shortest path length is selected as the distance parameter of the parking space. Secondly, congestion coefficient calculation: Based on the collected data, the number of vehicles passing through each lane per unit time is statistically analyzed to calculate the congestion coefficient of a single lane. For a path containing multiple channels, the custom path has n channels, and the congestion coefficient of the i-th channel is C. i The channel length is L i The final congestion coefficient of the entire path is then... In the formula, This is the total path length. ; Next, construct a comprehensive scoring model: The comprehensive score is obtained, where L is the shortest path length, C is the dynamic congestion coefficient, and W is the mean. C W is the weight for the congestion coefficient. L The weight is the shortest path length.

2. The underground parking guidance system based on the Internet of Things for transportation as described in claim 1, characterized in that: The lifting and stopping mechanism includes a gate seat fixedly installed on the top of the base mounting plate. An arm connecting frame is rotatably installed on one side of the gate seat via a main drive shaft. A main gate arm is inserted into the arm connecting frame. A secondary gate arm is rotatably connected to the end of the main gate arm away from the arm connecting frame. A linkage rod is fixedly installed on the top of the secondary gate arm and on the side close to the main gate arm. A bracket is fixedly installed on the gate seat and on the side of the main drive shaft away from the secondary gate arm. A hinge rod is hinged on the bracket and above the main gate arm. The other end of the hinge rod is hinged to the linkage rod. When the main gate arm is horizontal, the hinge rod is horizontal. A camera is fixedly installed on the top of the gate seat.

3. The underground parking guidance system based on the Internet of Things for transportation as described in claim 1, characterized in that: The path guidance unit includes a ceiling fixing plate for fixed installation on the garage wall. Vertical suspension columns are symmetrically fixed to the bottom of the ceiling fixing plate. Guide screen housings are fixed to the bottom of the two suspension columns. A mounting groove is provided on one side of the guide screen housing. A direction indicator screen is inserted into the guide screen housing within the mounting groove. A snap-fit ​​component is installed on the direction indicator screen to fix or remove the fixation between the direction indicator screen and the guide screen housing. A guide information screen is fixedly installed in a horizontal linear array on the side of the direction indicator screen away from the mounting groove. An arrow indicator screen is fixedly installed on the direction indicator screen and below the guide information screen. A second camera is fixedly installed on the top of the guide screen housing between the two opposite sides of the suspension columns.

4. The underground parking guidance system based on the Internet of Things for transportation as described in claim 1, characterized in that: The parking lock assembly includes an underground base for fixed installation on the ground of the parking space. The top of the underground base has a baffle storage groove. An installation cavity is formed on the top of the underground base and on one side of the baffle storage groove. A limit baffle is hinged to the underground base and inside the baffle storage groove via a hinge shaft. The limit baffle can be hidden inside the baffle storage groove. A baffle drive motor for driving the hinge shaft to rotate is fixedly installed in the installation cavity. A parking status screen is fixedly installed on the limit baffle. A distance measuring sensor is fixedly installed on the limit baffle and above the parking status screen.

5. The underground parking guidance system based on the Internet of Things for transportation according to claim 3, characterized in that: The snap-fit ​​component includes snap-fit ​​blocks symmetrically fixedly installed on the side of the direction indicator screen away from the guide information screen. The guide screen housing has symmetrically opened snap-fit ​​holes that are connected to the mounting groove. The two snap-fit ​​blocks can pass through the two snap-fit ​​holes respectively and extend to the outside of the guide screen housing. A receiving groove is opened on the side of the snap-fit ​​block that extends to the outside of the guide screen housing. A spring telescopic rod is fixedly installed on the snap-fit ​​block and located in the receiving groove. A snap-fit ​​block extending to the outside of the receiving groove is fixedly installed at the end of the spring telescopic rod. The snap-fit ​​block can be hidden in the receiving groove. When the direction indicator screen is in contact with the inner wall of the mounting groove, the snap-fit ​​block can snap-fit ​​with the guide screen housing. The bottom of the guide screen housing is equipped with a screen cleaning mechanism that acts on the direction indicator screen, which is used to clean the dust adhering to multiple guide information screens and multiple arrow indicator screens. The screen cleaning mechanism includes a mounting base fixedly installed at the bottom of the guide screen housing by screws. Vertical rotating shafts are symmetrically and rotatably mounted on the mounting base on both sides of the guide screen housing. Sprockets are coaxially fixedly connected to the rotating shafts. Chains are externally connected to the two sprockets. A cleaning drive motor connected to one of the rotating shafts is fixedly installed at the bottom of the mounting base. A connecting seat is fixedly installed at the top of the chain. A sponge shell is fixedly installed at the top of the connecting seat by screws. A sponge block is fixedly installed on the sponge shell near the guide screen housing.

6. The underground parking guidance system based on the Internet of Things for transportation as described in claim 3 or 5, characterized in that: A cleaning head protective cover that acts on the sponge block is installed on the side of the guide screen housing away from the mounting groove; The cleaning head protective cover includes two shielding plates that are symmetrically fixed in the horizontal direction on the side of the guide screen housing away from the mounting groove. The distance between the two shielding plates is the same as the height of the sponge shell. A vertical rotating rod is rotatably installed between the two shielding plates. A shielding block is fixedly installed on the outer wall of the rotating rod between the opposite sides of the two shielding plates. The outer wall of the shielding block has three shielding grooves arranged in a ring array along the axis of the rotating rod. The end of the sponge shell can be hidden in the shielding groove. The inner wall of the shielding groove has an arc surface at its opening end. The outer wall of the shielding block is also arc surface between two adjacent shielding grooves.

7. The underground parking guidance system based on the Internet of Things for transportation according to claim 1, characterized in that: A vehicle dust removal mechanism is installed on the base mounting plate, and the air outlet of the vehicle dust removal mechanism is connected to the barrier assembly located near the exit. The vehicle dust removal mechanism includes a ventilation box, a blower, a main air supply pipe, a first rotating hose, a main brake arm air supply pipe, a second rotating hose, a secondary brake arm air supply pipe, and downward spray pipes. The ventilation box is fixedly installed on the base mounting plate, and the blower is fixedly installed on the ventilation box. The air outlet of the blower is connected to the inside of the ventilation box through a connecting pipe. The main air supply pipe is connected through one side of the ventilation box and is fixed to one side of the brake seat by a fixing clip. The main brake arm air supply pipe is fixedly installed on the side wall of the main brake arm, and the secondary brake arm air supply pipe is fixedly installed on the side wall of the secondary brake arm. One end of the main brake arm air supply pipe is connected to the main brake arm air supply pipe through the first rotating hose, and the other end is connected to the secondary brake arm air supply pipe through the second rotating hose. Multiple downward spray pipes, all connected to the inside, are fixedly installed in a horizontal linear array at the bottom of the secondary brake arm air supply pipe.

8. The underground parking guidance system based on the Internet of Things for transportation according to claim 7, characterized in that: The ventilation box is open on the side away from the main air supply duct. A maintenance door is hinged to the ventilation box to seal its open end. The maintenance door is fixed to the ventilation box by a buckle. A filter element mounting frame is fixedly installed inside the ventilation box on the side closest to the main air supply duct and located outside the main air supply duct. An inlet filter element for sealing the main air supply duct is inserted into the filter element mounting frame. The outer wall of the inlet filter element is in contact with the inner wall of the filter element mounting frame. A limiting frame for limiting the position of the inlet filter element is fitted outside the filter element mounting frame. The limiting frame has a vent that is connected to the inner side of the filter element mounting frame. The limiting frame and the filter element mounting frame are fixed by screws.

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