Apparatus for detecting parking space occupancy using geomagnetic and radar

Abstract

The application discloses a kind of devices for detecting parking space occupancy using geomagnetic and radar, specifically relates to parking space detection field, including transmission mechanism, the outside of transmission mechanism is at least drivingly connected with two chain belt mechanisms, the top of chain belt mechanism is equipped with the vehicle detection mechanism of corresponding arrangement;Chain belt mechanism includes first link type middle shaft, the both sides of first link type middle shaft are equipped with chain type tooth block by bearing, every two chain type tooth block is a group, and at least two second link type middle shafts are fixedly installed in each group of chain type tooth block, and second link type middle shaft is connected by chain limiting peg between chain type tooth block Screw connection.This application obtains the classification result of binary classification problem by loss function, then whether the problem of active sleeve appears reverse can be inferred, so as to further obtain the specific data of parking space occupancy, improve the convenience of use.

Description

Technical Field

[0001] This invention relates to the field of parking space detection technology, and more specifically, to a device for detecting parking space occupancy using geomagnetism and radar. Background Technology

[0002] Geomagnetic sensors can be used to detect the presence of vehicles and identify vehicle types. Data acquisition systems play a very important role in traffic monitoring systems. Geomagnetic sensors are a key component of data acquisition systems, and the performance of the sensors determines the accuracy of the data acquisition system. The geomagnetic field is an inherent resource of the Earth, providing a natural coordinate system for aviation, aerospace, and navigation. It can be applied to the positioning, orientation, and attitude control of spacecraft or ships. Magnetic navigation technology, which utilizes the spatial distribution of the Earth's magnetic field, is simple, efficient, reliable, and resistant to interference. It is one of the essential navigation and positioning methods that developed countries cannot do without. For example, Boeing aircraft, which have a high degree of automation, are equipped with magnetic navigation and positioning systems.

[0003] With the rapid increase in the number of vehicles in cities, the supply of parking spaces is sometimes insufficient in some areas. Before entering a parking lot, drivers need to know the accurate parking space information. The traditional method is to distinguish between vehicles entering and exiting, but this cannot distinguish between electric vehicles and gasoline vehicles. Therefore, a new type of parking space occupancy detection device is needed for practical use. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a device for detecting parking space occupancy using geomagnetism and radar. By obtaining the classification result of a binary classification problem through a loss function, it is possible to infer whether the movable sleeve has reversed, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A device for detecting parking space occupancy using geomagnetism and radar includes a transmission mechanism, wherein at least two chain belt mechanisms are externally connected to the transmission mechanism, and vehicle detection mechanisms are installed on the top of the chain belt mechanisms in a corresponding manner.

[0007] The chain belt mechanism includes a first connecting type central shaft, and chain-type toothed blocks are installed on both sides of the first connecting type central shaft through bearings. Every two chain-type toothed blocks form a group, and at least two second connecting type central shafts are fixedly installed in each group of chain-type toothed blocks. The second connecting type central shafts and the chain-type toothed blocks are threadedly connected by chain limit bolts.

[0008] The vehicle inspection mechanism includes a first positioning clamp installed on a first connecting shaft and a second connecting shaft. The number of the first positioning clamps is consistent with the number of the chain belt mechanism. A fixed seat is fixedly installed on one side of the first positioning clamp. A movable sleeve is rotatably connected between the two fixed seats. A first arc-shaped wheel limiting plate is installed on both sides of the movable sleeve. The two first arc-shaped wheel limiting plates are mirror-symmetrical about the vertical center line of the movable sleeve. A second arc-shaped wheel limiting plate is integrally fixedly connected to the bottom edge of the first arc-shaped wheel limiting plate. Multiple first slots are opened at equal intervals on the surfaces of the first arc-shaped wheel limiting plate and the first arc-shaped wheel limiting plate. A rotating roller is rotatably connected in the first slot.

[0009] A geomagnetic module and a radar detection module are installed on the side of the first arc-shaped wheel limiting plate near the rotating roller. The geomagnetic module and the radar detection module are electrically connected to a controller via a WIFI module and a communication module. The controller, the WIFI module and the communication module are installed inside the movable sleeve and / or the first positioning clamp.

[0010] The controller includes a data processing module.

[0011] In a preferred embodiment, the transmission mechanism includes a main transmission type horizontal roller shaft, and transmission type gear components are fixedly installed at both ends of the main transmission type horizontal roller shaft. The outer wall of the transmission type gear component is provided with an insertion type groove.

[0012] In a preferred embodiment, a group of chain-type toothed blocks and the first connecting central shaft and the second connecting central shaft disposed therebetween constitute a group of chain segments, and multiple groups of chain segments are hinged to each other by the second connecting central shaft and the chain limiting bolt;

[0013] The top of the multiple sets of chain segments is fitted with a first smooth belt strip, and the bottom of the multiple sets of chain segments is fixedly installed with a second smooth belt strip by chain-type toothed blocks;

[0014] And / or the surface of the second smooth belt strip is provided with a conforming convex strip that matches the main drive type horizontal roller shaft.

[0015] In a preferred embodiment, both sides of the first positioning clamp are fixedly installed with insert-type frames by bolts. The insert-type frames are hollow block-shaped structures. Insert-type frame grooves are opened inside the insert-type frame grooves. The cross-sectional thickness of the inner cavity of the insert-type frame grooves is equal to the cross-sectional thickness of the first smooth belt strip. The first smooth belt strip is inserted into the interior of the insert-type frame through the insert-type frame grooves.

[0016] In a preferred embodiment, an arc-shaped protective plate is fixedly installed between the first positioning clamp and the insert frame by bolts. The arc-shaped protective plate has a semi-circular structure, and rubber anti-collision strips are fixedly installed at both the top and bottom of the arc-shaped protective plate.

[0017] In a preferred embodiment, at least two inclined suspension support rods are fixedly installed on the inner wall of the first positioning clamp by bolts, and a second positioning clamp is fixedly installed between the two inclined suspension support rods. The inner diameter of the second positioning clamp is equal to the outer diameter of the cross section of the first connecting shaft.

[0018] In a preferred embodiment, a smooth support plate is installed at the bottom of the second arc-shaped wheel limiting plate, the smooth support plate including a sliding plate structure and a roller-type wheel body structure;

[0019] And / or the bottom of the second arc-shaped wheel limiting plate is provided with a second slot, and the smooth support piece is installed in the inner cavity of the second slot;

[0020] And / or the angle between the second arc-shaped wheel limiting plate and the ground is five to fifteen degrees.

[0021] In a preferred embodiment, a central connecting roller is inserted into the middle of the inner cavity of the movable sleeve, and both ends of the central connecting roller are fixedly installed on one side of the fixed base. The movable sleeve and the adjacent central connecting roller are arranged in a one-to-one correspondence.

[0022] In a preferred embodiment, a third shaft segment connecting cylinder is inserted between the movable sleeve and the central connecting roller, and a first shaft segment connecting cylinder and a second shaft segment connecting cylinder are respectively machined between the central connecting roller and the third shaft segment connecting cylinder.

[0023] The outer wall of the second shaft segment connecting cylinder, the inner wall of the first shaft segment connecting cylinder, the outer wall of the third shaft segment connecting cylinder, and the inner wall of the central connecting roller are all circumferentially and equidistantly equipped with multiple limiting gear blocks. The first shaft segment connecting cylinder and the second shaft segment connecting cylinder, and the movable sleeve and the third shaft segment connecting cylinder are kept in a meshing state through the limiting gear blocks.

[0024] In a preferred embodiment, the inner wall of the third shaft segment connecting cylinder is provided with a plurality of first parallel locking blocks arranged in a ring at equal intervals, and the outer wall of the first shaft segment connecting cylinder is provided with a plurality of second parallel locking blocks arranged in a ring at equal intervals. The first parallel locking blocks and the second parallel locking blocks are engaged with each other at an inclined position, and the second parallel locking blocks are made of steel sheets.

[0025] The technical effects and advantages of this invention are as follows:

[0026] 1. In this invention, after the wheel contacts the first arc-shaped wheel limiting plate, the rotating roller prevents the wheel from directly running over the first arc-shaped wheel limiting plate, keeping the wheel in a slipping state on the first arc-shaped wheel limiting plate. When the wheel speed is too high, the two first arc-shaped wheel limiting plates form a state of mutual resistance. Because the two first arc-shaped wheel limiting plates are fixed on both sides of the movable sleeve, it can prevent the wheel speed from being too high and causing it to overtake or overturn. On the one hand, it improves the accuracy of individual parking space monitoring, and on the other hand, it reduces the probability of the equipment overturning due to the squeezing of the car during the monitoring process.

[0027] 2. This invention obtains the classification result of the binary classification problem through the loss function, which can then infer whether the movable sleeve has reversed, thereby obtaining specific data on parking space occupancy and improving the ease of use. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 For the present invention Figure 1 Enlarged view of the structure of part A.

[0030] Figure 3 This is a partial structural schematic diagram of the chain belt mechanism of the present invention.

[0031] Figure 4 For the present invention Figure 3 Enlarged view of the structure of part B.

[0032] Figure 5 For the present invention Figure 3 Enlarged view of the C-section structure.

[0033] Figure 6 This is a schematic diagram of the vehicle inspection mechanism of the present invention.

[0034] Figure 7 This is a cross-sectional view of the vehicle inspection mechanism of the present invention.

[0035] Figure 8 For the present invention Figure 7 Enlarged view of the structure of part D.

[0036] Figure 9 This is a cross-sectional view of the movable sleeve of the present invention.

[0037] Figure 10 For the present invention Figure 9 Enlarged view of the E-section structure.

[0038] The attached figures are labeled as follows: 1. Transmission mechanism; 101. Main transmission type horizontal roller shaft; 102. Transmission type gear component; 103. Insertion type slot; 2. Chain belt mechanism; 21. First connecting type central shaft; 22. Chain type tooth block; 23. Chain limit bolt; 24. Second connecting type central shaft; 25. First smooth type belt strip; 26. Second smooth type belt strip; 27. Fitting type convex strip; 3. Vehicle detection mechanism; 31. First positioning type clamp; 32. Fixed seat; 33. Movable type sleeve; 34. First arc-shaped vehicle. 35. Wheel limiting plate, 36. Second arc-shaped wheel limiting plate, 37. Rotary roller, 38. Insertion frame, 39. Insertion frame groove, 30. Arc-shaped guard plate, 310. Inclined suspension support rod, 311. Second positioning clamp, 312. Smooth support mechanism, 313. Center connecting roller, 314. First shaft section connecting cylinder, 315. Second shaft section connecting cylinder, 316. Third shaft section connecting cylinder, 317. Limiting gear block, 318. First parallel locking block, 319. Second parallel locking block. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0040] Refer to the instruction manual appendix Figure 1-10An embodiment of the present invention discloses a device for detecting parking space occupancy using geomagnetism and radar. The device includes a transmission mechanism 1, with at least two chain-belt mechanisms 2 externally connected to the transmission mechanism 1. Vehicle detection mechanisms 3 are mounted on the top of the chain-belt mechanisms 2, corresponding to each other. Each chain-belt mechanism 2 includes a first connecting shaft 21. Chain-type toothed blocks 22 are mounted on both sides of the first connecting shaft 21 via bearings. Every two chain-type toothed blocks 22 form a group. At least two second connecting shafts 24 are fixedly mounted on each group of chain-type toothed blocks 22. The second connecting shafts 24 and the chain-type toothed blocks 22 are threadedly connected by chain limit bolts 23. The vehicle detection mechanisms 3 include those mounted on the first connecting shaft 21 and the second connecting shafts 24. The number of first positioning clamps 31 is consistent with the number of chain belt mechanisms 2. A fixed seat 32 is fixedly installed on one side of the first positioning clamp 31. A movable sleeve 33 is rotatably connected between the two fixed seats 32. A first arc-shaped wheel limiting plate 34 is installed on both sides of the movable sleeve 33. The two first arc-shaped wheel limiting plates 34 are mirror-symmetrical about the vertical center line of the movable sleeve 33. A second arc-shaped wheel limiting plate 35 is integrally fixedly connected to the bottom edge of the first arc-shaped wheel limiting plate 34. Multiple first slots are opened at equal intervals on the surfaces of the first arc-shaped wheel limiting plate 34 and the second arc-shaped wheel limiting plate 35. A rotating roller 36 is rotatably connected in the first slot.

[0041] A geomagnetic module and a radar detection module are installed on the side of the first arc-shaped wheel limiting plate 34 near the rotating roller 36. The geomagnetic module and the radar detection module are electrically connected to a controller via a WIFI module and a communication module. The controller, the WIFI module, and the communication module are installed inside the movable sleeve 33 and / or the first positioning clamp 31. The controller includes a data processing module.

[0042] In the further embodiment of the above-mentioned scheme, the transmission mechanism 1 includes a main drive type horizontal roller shaft 101. Both ends of the main drive type horizontal roller shaft 101 are fixedly installed with transmission type gear components 102. The outer wall of the transmission type gear component 102 is provided with a insertion type groove 103. A set of chain type tooth blocks 22 and the first connecting type central shaft 21 and the second connecting type central shaft 24 arranged between them constitute a set of chain segments. Multiple sets of chain segments are hinged to each other with chain limit bolts 23 through the second connecting type central shaft 24. At the same time, the top of the multiple sets of chain segments is attached to a first smooth type belt strip 25, and the bottom of the multiple sets of chain segments is fixedly installed with a second smooth type belt strip 26 through the chain type tooth blocks 22; and / or the surface of the second smooth type belt strip 26 is provided with a fitting type protrusion 27 that matches the main drive type horizontal roller shaft 101.

[0043] Both sides of the first positioning clamp 31 are fixedly installed with insert-type frames 37 by bolts. The insert-type frames 37 are hollow square structures. The insert-type frames 37 have insert-type frame grooves 38 inside. The thickness of the inner cavity of the insert-type frame groove 38 is equal to the thickness of the cross-section of the first smooth belt strip 25. The first smooth belt strip 25 is inserted into the insert-type frame 37 through the insert-type frame groove 38. The first positioning clamp 31 and the insert-type frame 37 are fixedly installed with bolts. The arc-shaped guard plate 39 is semi-circular in structure. Rubber anti-collision strips are fixedly installed at the top and bottom of the arc-shaped guard plate 39.

[0044] The inner wall of the first positioning clamp 31 is fixedly installed with at least two inclined suspension support rods 310 by bolts. The second positioning clamp 311 is fixedly installed between the two inclined suspension support rods 310. The inner diameter of the second positioning clamp 311 is equal to the outer diameter of the cross section of the first connecting shaft 21. The bottom of the second arc-shaped wheel limiting plate 35 is equipped with a smooth support plate 312. The smooth support plate 312 includes a sliding plate structure and a roller wheel structure. The bottom of the second arc-shaped wheel limiting plate 35 is provided with a second slot. The smooth support plate 312 is installed in the inner cavity of the second slot. The angle between the second arc-shaped wheel limiting plate 35 and the ground is five to fifteen degrees.

[0045] A central connecting roller 313 is inserted into the center of the inner cavity of the movable sleeve 33. Both ends of the central connecting roller 313 are fixedly mounted on one side of the fixed base 32. The movable sleeve 33 and the adjacent central connecting roller 313 are arranged in a one-to-one correspondence. A third shaft segment connecting sleeve 316 is inserted between the movable sleeve 33 and the central connecting roller 313. A first shaft segment connecting sleeve 314 and a second shaft segment connecting sleeve 315 are respectively machined between the central connecting roller 313 and the third shaft segment connecting sleeve 316. The outer wall of the second shaft segment connecting sleeve 315, the inner wall of the first shaft segment connecting sleeve 314, and the outer wall of the third shaft segment connecting sleeve 316 are connected to the central connecting roller 313. The inner wall of the receiving roller shaft 313 is equipped with multiple limiting gear blocks 317 arranged in a ring at equal intervals. The first shaft section connecting cylinder 314 and the second shaft section connecting cylinder 315, the movable sleeve 33 and the third shaft section connecting cylinder 316 are kept in a meshing state through the limiting gear blocks 317. The inner wall of the third shaft section connecting cylinder 316 is equipped with multiple first parallel locking blocks 318 arranged in a ring at equal intervals. The outer wall of the first shaft section connecting cylinder 314 is equipped with multiple second parallel locking blocks 319 arranged in a ring at equal intervals. The first parallel locking blocks 318 and the second parallel locking blocks 319 are meshed with each other in an inclined manner. The second parallel locking blocks 319 are made of steel sheets.

[0046] Further explanation is needed regarding the above plan.

[0047] The first implementation method involves fixing the first positioning clamp 31 and the second positioning clamp 311 at both ends of the vehicle detection mechanism 3 to the first connecting shaft 21 and the second connecting shaft 24 of the chain belt mechanism 2. A square pit is dug at the parking space location, and the transmission mechanism 1 and the chain belt mechanism 2 are fixed in the pit in a suspended state. When the vehicle enters the parking space, the geomagnetic module and radar detection module on the first arc-shaped wheel limit plate 34 first detect whether there is a vehicle. When the geomagnetic module and radar detection module detect that there is a vehicle, the signal is sent to the data processing module of the controller.

[0048] Meanwhile, after the wheel contacts the first arc-shaped wheel limiting plate 34, the rotating roller 36 prevents the wheel from directly running over the first arc-shaped wheel limiting plate 34, keeping the wheel slipping on the first arc-shaped wheel limiting plate 34. When the wheel speed is too high, the two first arc-shaped wheel limiting plates 34 form a state of mutual resistance. Since the two first arc-shaped wheel limiting plates 34 are fixed on both sides of the movable sleeve 33, it can prevent the wheel speed from being too high and causing it to overtake or tip over.

[0049] Meanwhile, when the first positioning clamp 31 and the movable sleeve 33 move with the vehicle, the insertion frame 37 can push the first smooth belt 25 to move in parallel. Since the first smooth belt 25 and the chain segment are fixed, it can play an auxiliary role in driving the chain segment to move.

[0050] In addition, an angle deflection sensor is connected to the movable sleeve 33. When the movable sleeve 33 does not deflect as required by the operator, the data can be recorded.

[0051]

[0052] Where X1 represents the feature vector of the movable sleeve 33 moving in the desired direction, X2 represents the feature vector of the movable sleeve 33 moving in the non-desired direction, O is a matrix, ‖X1-X2‖ represents the distance between the two feature vectors in the loss function, and T is the transpose matrix;

[0053]

[0054]

[0055] Where exp is an exponential function with the natural constant e as the base, T is the transpose matrix, p1 is greater than p2 if the predicted value approaches the first feature vector, otherwise it is the second feature vector, W is the weight vector, x is the learned feature vector, and a is the bias matrix.

[0056] pass and By obtaining the classification result of the binary classification problem based on the size, it can be inferred whether the movable sleeve 33 has reversed, thereby obtaining the specific data on parking space occupancy and improving the convenience of use.

[0057] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0058] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0059] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for detecting parking space occupancy using geomagnetism and radar, comprising a transmission mechanism (1), characterized in that: The transmission mechanism (1) is externally connected to at least two chain belt mechanisms (2), and the top of the chain belt mechanism (2) is equipped with a vehicle detection mechanism (3) that is arranged in a corresponding manner. The chain belt mechanism (2) includes a first connecting type central shaft (21), and chain-type tooth blocks (22) are installed on both sides of the first connecting type central shaft (21) through bearings. Every two chain-type tooth blocks (22) form a group, and at least two second connecting type central shafts (24) are fixedly installed in each group of chain-type tooth blocks (22). The second connecting type central shafts (24) and the chain-type tooth blocks (22) are threadedly connected by chain limit bolts (23). The vehicle inspection mechanism (3) includes a first positioning clamp (31) installed on a first connecting shaft (21) and a second connecting shaft (24). The number of the first positioning clamps (31) is consistent with the number of the chain belt mechanism (2). A fixed seat (32) is fixedly installed on one side of the first positioning clamp (31). A movable sleeve (33) is rotatably connected between the two fixed seats (32). A first arc-shaped wheel limiting plate (34) is installed on both sides of the movable sleeve (33). The two first arc-shaped wheel limiting plates (34) are mirror-symmetrical about the vertical center line of the movable sleeve (33). A second arc-shaped wheel limiting plate (35) is integrally fixedly connected to the bottom edge of the first arc-shaped wheel limiting plate (34). Multiple first slots are opened at equal intervals on the surfaces of the first arc-shaped wheel limiting plate (34) and the second arc-shaped wheel limiting plate (35). A rotating roller (36) is rotatably connected in the first slot. The first arc-shaped wheel limiting plate (34) is equipped with a geomagnetic module and a radar detection module on the side near the rotating roller (36). The geomagnetic module and the radar detection module are electrically connected to a controller through a WIFI module and a communication module. The controller, the WIFI module and the communication module are installed inside the movable sleeve (33) and / or the first positioning clamp (31). The controller includes a data processing module; Both sides of the first positioning clamp (31) are fixedly installed with insert-type frames (37) by bolts. The insert-type frames (37) are hollow square structures, and insert-type frame grooves (38) are opened inside the insert-type frames (37). The thickness of the inner cavity of the insert-type frame groove (38) is equal to the thickness of the first smooth belt strip (25), and the first smooth belt strip (25) is inserted into the interior of the insert-type frame (37) through the insert-type frame groove (38); An arc-shaped protective plate (39) is fixedly installed between the first positioning clamp (31) and the insert frame (37) by bolts. The arc-shaped protective plate (39) is set in a semi-circular structure. Rubber anti-collision strips are fixedly installed at the top and bottom of the arc-shaped protective plate (39). The inner wall of the first positioning clamp (31) is fixedly installed with at least two inclined suspension support rods (310) by bolts, and a second positioning clamp (311) is fixedly installed between the two inclined suspension support rods (310). The inner diameter of the second positioning clamp (311) is equal to the outer diameter of the cross section of the first connecting shaft (21).

2. The device for detecting parking space occupancy using geomagnetism and radar according to claim 1, characterized in that: The transmission mechanism (1) includes a main transmission type horizontal roller shaft (101), and transmission type gear components (102) are fixedly installed at both ends of the main transmission type horizontal roller shaft (101). The outer wall of the transmission type gear component (102) is provided with a insertion type groove (103).

3. The device for detecting parking space occupancy using geomagnetism and radar according to claim 2, characterized in that: One set of chain-type toothed blocks (22) and the first connecting type central shaft (21) and the second connecting type central shaft (24) arranged between them constitute a set of chain segments. Multiple sets of chain segments are hinged to each other with chain limit bolts (23) through the second connecting type central shaft (24). The top of the multiple sets of chain segments is fitted with a first smooth belt strip (25), and the bottom of the multiple sets of chain segments is fixedly installed with a second smooth belt strip (26) through a chain-type toothed block (22). And / or the surface of the second smooth belt strip (26) is provided with a fitting protrusion (27) that matches the main drive type horizontal roller shaft (101).

4. The device for detecting parking space occupancy using geomagnetism and radar according to claim 1, characterized in that: The bottom of the second arc-shaped wheel limiting plate (35) is equipped with a smooth support plate (312), which includes a sliding plate structure and a roller-type wheel structure; And / or the bottom of the second arc-shaped wheel limiting plate (35) is provided with a second slot, and the smooth support plate (312) is installed in the inner cavity of the second slot; And / or the angle between the second arc-shaped wheel limiting plate (35) and the ground is five to fifteen degrees.

5. The device for detecting parking space occupancy using geomagnetism and radar according to claim 4, characterized in that: The movable sleeve (33) has a central connecting roller (313) inserted into the middle of its inner cavity. Both ends of the central connecting roller (313) are fixedly installed on one side of the fixed base (32). The movable sleeve (33) and the adjacent central connecting roller (313) are arranged in a one-to-one correspondence.

6. The device for detecting parking space occupancy using geomagnetism and radar according to claim 5, characterized in that: A third shaft section connecting sleeve (316) is inserted between the movable sleeve (33) and the central connecting roller (313), and a first shaft section connecting sleeve (314) and a second shaft section connecting sleeve (315) are respectively machined between the central connecting roller (313) and the third shaft section connecting sleeve (316). The outer wall of the second shaft segment connecting cylinder (315), the inner wall of the first shaft segment connecting cylinder (314), the outer wall of the third shaft segment connecting cylinder (316), and the inner wall of the central connecting roller shaft (313) are all circumferentially and equidistantly equipped with multiple limiting gear blocks (317). The first shaft segment connecting cylinder (314) and the second shaft segment connecting cylinder (315), and the movable sleeve (33) and the third shaft segment connecting cylinder (316) are kept in a meshing state through the limiting gear blocks (317).

7. The device for detecting parking space occupancy using geomagnetism and radar according to claim 6, characterized in that: The inner wall of the third shaft section connecting cylinder (316) is provided with a plurality of first parallel locking blocks (318) arranged in an annular and equidistant manner, and the outer wall of the first shaft section connecting cylinder (314) is provided with a plurality of second parallel locking blocks (319) arranged in an annular and equidistant manner. The first parallel locking blocks (318) and the second parallel locking blocks (319) are engaged with each other in an inclined manner, and the second parallel locking blocks (319) are made of steel sheets.

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