An automatic parking system and its chassis height detection device

Abstract

The present application discloses an automatic parking system and a chassis height detection device thereof. The detection device is used to detect the bottom height of a vehicle to be detected when it gradually passes through the bottom of the vehicle to be detected. The chassis height detection device includes: a base; a pressing assembly, including a connecting plate and a pressing rod, one end of the connecting plate is rotatably matched with the base, the other end of the connecting plate extends away from the base and is used to install the pressing rod, the pressing rod is arranged to face the bottom of the vehicle, and the distance between the side of the pressing rod away from the base and the mounting surface of the base is a first preset height; a detection assembly, which is used to send a prompt message when the distance between the side of the pressing rod away from the base and the mounting surface of the base is less than the first preset height. Through the above-mentioned chassis height detection device, the bottom height of the vehicle can be detected when the vehicle passes by it, and then it can be confirmed whether the vehicle can be automatically parked by a vehicle transporter.

Description

Technical Field

[0001] This application belongs to the technical field of automatic parking systems, and particularly relates to an automatic parking system and a chassis height detection device thereof. Background Art

[0002] With the development of automation technology, automatic parking technology has been widely applied to the parking systems of multi-story garages. In the existing parking systems of multi-story garages, for a vehicle to be parked, a vehicle handling device is usually used to obtain the vehicle to be parked and transport it to a preset parking position for parking.

[0003] Existing vehicle handling devices generally need to enter the bottom of the vehicle to be parked to lift the vehicle to be parked, and then transport the vehicle to be parked to a preset parking position. Among them, if the bottom height of the vehicle to be parked is less than the height of the vehicle handling device, it will cause the vehicle handling device to be unable to enter the bottom of the vehicle to be parked, or may cause problems such as scratches on the bottom of the vehicle to be parked. Summary of the Invention

[0004] This application provides an automatic parking system and a chassis height detection device thereof to solve the above technical problems.

[0005] To solve the above technical problems, a technical solution adopted by this application is: to provide a chassis height detection device for a vehicle,

[0006] The chassis height detection device is used to detect the bottom height of the vehicle to be detected when it gradually passes through the bottom of the vehicle to be detected. The chassis height detection device includes:

[0007] A base;

[0008] A pressing assembly, including a connecting plate and a pressing rod. One end of the connecting plate is rotatably fitted with the base. The other end of the connecting plate extends away from the base and is used to install the pressing rod. The pressing rod is arranged towards the bottom of the vehicle. The distance between the side of the pressing rod away from the base and the mounting surface of the base is a first preset height;

[0009] A detection component, which is used to send a prompt message when the distance between the side of the pressing rod away from the base and the mounting surface of the base is less than the first preset height.

[0010] Optionally, the detection component includes a signal sending member and a signal receiving member. The signal receiving member is used to receive the signal sent by the signal sending member;

[0011] The signal sending member and the signal receiving member are respectively installed on the base and the connecting plate;

[0012] When the distance between the side of the pressing rod away from the base and the mounting surface of the base is less than a first preset height, the signal transmitter and the signal receiver are arranged in a dislocation manner so that the signal receiver does not receive the signal sent by the signal transmitter.

[0013] Optionally, the detection assembly includes a signal transmitter, a signal receiver, and a blocking member;

[0014] The signal transmitter and the signal receiver are spaced apart and mounted on the base, and the signal receiver is configured to receive the signal sent by the signal transmitter;

[0015] The blocking member is mounted on the connecting plate, and the blocking member is configured to be disposed between the signal transmitter and the signal receiver to block the signal sent by the signal transmitter;

[0016] Wherein, when the distance between the side of the pressing rod away from the base and the mounting surface of the base is less than a first preset height, at least a part of the blocking member disengages from the position between the signal transmitter and the signal receiver so that the signal receiver receives the signal sent by the signal transmitter

[0017] Optionally, both ends of the pressing rod are rotatably connected to the connecting plate so that the pressing rod rotates relative to the connecting plate about its axis.

[0018] Optionally, the chassis height detection device further includes a positioning plate, the positioning plate is connected to the base, and the positioning plate is configured to position the vehicle to be detected when the chassis height detection device gradually passes through the bottom of the vehicle to be detected.

[0019] Optionally, the side of the positioning plate facing the vehicle to be detected is arc-shaped, and in the direction in which the chassis height detection device gradually enters the bottom of the vehicle to be detected, the width of the positioning plate gradually decreases.

[0020] Optionally, an induction assembly is further provided on the positioning plate, and the induction assembly is configured to detect the wheels of the vehicle to be detected;

[0021] The induction assembly is configured to send a prompt message when the wheels reach a preset distance from the positioning plate.

[0022] Optionally, the chassis height detection device further includes an elastic member, and opposite ends of the elastic member are respectively connected to the base and the connecting plate so that the base and the connecting plate are elastically connected.

[0023] Optionally, the connecting plate further includes an abutting portion, and the base further is provided with a limiting plate. The elastic member is configured to press the abutting portion of the connecting plate against the limiting plate to limit the position of the pressing rod.

[0024] To solve the above technical problems, one technical solution adopted in this application is: to provide an automatic parking system, which includes the chassis height detection device and the vehicle transporter as described above. When the chassis height detection device gradually passes through the bottom of the vehicle to be detected, the vehicle transporter is configured to gradually move to the bottom of the vehicle to be detected to transport the vehicle to be detected to a preset position when the detection component does not send a prompt message.

[0025] The beneficial effects of this application are as follows: By arranging the chassis height detection device on the driving route of the vehicle in the embodiments of this application, the bottom height of the vehicle can be detected. When it is detected that the bottom height of the vehicle is greater than or equal to the first preset height, the vehicle handling device can be used to automatically park the vehicle. Therefore, it is possible to avoid problems such as scratches or abrasions on the bottom of the vehicle caused by the mismatch between the vehicle handling device and the bottom height of the vehicle. At the same time, by providing the positioning plate, the driver of the vehicle can correct the driving route of the vehicle, so that the chassis height detection device can enter the bottom of the vehicle from the middle area in the width direction of the vehicle, thereby preventing the chassis height detection device from coming into contact or collision with the wheels of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0027] Figure 1 is a schematic structural diagram of an embodiment of a chassis height detection device provided by this application;

[0028] Figure 2 is Figure 1 a schematic structural diagram of an exploded view of the chassis height detection device shown;

[0029] Figure 3 is Figure 1 a schematic structural diagram of the chassis height detection device shown after removing the protection plate and the cross beam;

[0030] Figure 4 is Figure 3 a partial enlarged view of the chassis height detection device shown in area A;

[0031] Figure 5 is Figure 3 The schematic structural diagram of the chassis height detection device shown when performing height detection;

[0032] Figure 6 is Figure 3 The cross-sectional view of the chassis height detection device shown when setting the position of the elastic member;

[0033] Figure 7 is Figure 3 The cross-sectional view of the chassis height detection device shown when setting the position of the limit plate;

[0034] Figure 8 The schematic structural diagram of the position of the chassis height detection device in the automatic parking system;

[0035] Figure 9 The schematic structural diagram of the position of the chassis height detection device when performing height detection on the vehicle to be parked. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0039] Please refer to Figures 1-3 , Figure 1 which is the schematic structural diagram of an embodiment of a chassis height detection device provided by the present application; Figure 2 isFigure 1 Schematic diagram of the exploded view of the chassis height detection device shown; Figure 3 is Figure 1 Schematic diagram of the structure of the chassis height detection device shown after removing the protection plate and cross beam.

[0040] The chassis height detection device 10 in this embodiment is used to detect the bottom height of a vehicle to be detected when it gradually passes through the bottom of the vehicle to be detected. Among them, the chassis height detection device 10 includes a base 100, a pressing assembly 200, and a detection assembly 300.

[0041] Among them, the base 100 is used to be fixedly installed on the traveling route of the vehicle to be detected, so that the position of the entire chassis height detection device 10 can be fixed. The pressing assembly 200 includes a connecting plate 210 and a pressing rod 220. One end of the connecting plate 210 is rotatably matched with the base 100, and the other end of the connecting plate 210 extends in a direction away from the base 100 and is used to install the pressing rod 220. The pressing rod 220 is arranged towards the bottom of the vehicle. Among them, the distance between one end of the pressing rod 220 away from the installation plane of the base 100 and the installation plane of the base 100 can be set as a first preset height.

[0042] Among them, when the chassis height detection device 10 is fixedly installed on the traveling route of the vehicle to be detected, the pressing rod 220 can extend in a direction away from the traveling surface of the wheel of the vehicle to be detected, and there is a first preset height between the pressing rod 220 and the traveling surface of the wheel. When the vehicle to be detected passes above the chassis height detection device 10, if the bottom of the vehicle to be detected does not touch the pressing rod 220 of the chassis height detection device 10, it means that the bottom height of the vehicle to be detected is greater than the first preset height. Among them, the first preset height can be equal to the height of the vehicle handling device; or the first preset height can also be slightly greater than the height equal to the vehicle handling device. For vehicle handling devices of different heights, the corresponding first preset heights are different. Therefore, the first preset height in the chassis height detection device 10 can be set according to different vehicle handling devices, which is not limited here.

[0043] Therefore, by setting the chassis height detection device 10 on the traveling route of the vehicle to be detected, and when the vehicle to be detected passes over the chassis height detection device 10, it can be detected whether the bottom height of the vehicle to be detected is greater than or equal to the first preset height. When it is detected that the bottom height of the vehicle to be detected is greater than or equal to the first preset height, the vehicle handling device can gradually move to the bottom of the vehicle to be detected, and then the vehicle to be detected can be lifted. The advantage of this solution is that by first detecting the bottom height of the vehicle to be detected, when it is detected that the bottom height is greater than or equal to the first preset height, the vehicle handling device will gradually move to the bottom of the vehicle to be detected, and then the vehicle to be detected can be lifted. Therefore, it is possible to avoid problems such as scratches or abrasions on the bottom of the vehicle to be detected during the process of the vehicle handling device entering the bottom of the vehicle to be detected.

[0044] In this embodiment, if the bottom height of the vehicle to be detected is less than the first preset height, then during the process of the vehicle to be detected passing over the chassis height detection device 10, the bottom of the vehicle to be detected touches the pressing rod 220 and presses the pressing rod 220, so that the pressing rod 220 and the connecting plate 210 can rotate relative to the base 100, and then one end of the pressing rod 220 away from the installation plane of the base 100 abuts against the bottom of the vehicle to be detected. At this time, the distance between one end of the pressing rod 220 away from the installation plane of the base 100 and the installation plane of the base 100 can be called the second preset height, and this second preset height is the bottom height of the vehicle to be detected, and the second preset height is less than the first preset height.

[0045] When it is detected that the bottom height of the vehicle to be detected is less than the first preset height, the detection component 300 can send out a prompt message, indicating that the vehicle to be detected cannot use the vehicle handling device with the first preset height as described above for automatic parking. Therefore, the driver can park the vehicle to be detected in the manual parking space according to the prompt message.

[0046] Alternatively, the detection component 300 can send a prompt message to the controller, so that the controller stops using the vehicle handling device with the first preset height as described above for automatic parking of the vehicle to be detected; or, the detection component 300 can also detect the specific value of the second preset height, and the detection component 300 can send this numerical information to the controller, and the controller can select a vehicle handling device with a height less than or equal to the second preset height to perform automatic parking on the vehicle to be detected.

[0047] Further, please refer to Figures 4-5 , Figure 4 which Figure 3 is a partial enlarged view of the chassis height detection device in area A; Figure 5 which Figure 3Schematic structural diagram of the chassis height detection device during height detection.

[0048] In this embodiment, the detection component 300 may further include a signal transmitter 310, a signal receiver 320, and a blocking member 330. Among them, the signal transmitter 310 and the signal receiver 320 may be arranged opposite to each other and at intervals on the base 100, and the blocking member 330 may be installed on the connecting plate 210 and correspond to the position between the signal transmitter 310 and the signal receiver 320.

[0049] When the vehicle to be detected does not pass over the chassis height detection device 10, the distance between the end of the pressing rod 220 away from the installation plane of the base 100 and the installation plane of the base 100 is the first preset height. At this time, the blocking member 330 can be inserted between the signal transmitter 310 and the signal receiver 320, and the blocking member 330 can block the signal emitted by the signal transmitter 310, so that the signal receiver 320 cannot receive the signal emitted by the signal transmitter 310. At this time, the chassis height detection device 10 does not emit a prompt message, so the vehicle to be detected can be automatically parked after being transported by the vehicle handling device.

[0050] When the chassis height detection device 10 passes under the vehicle to be detected (and the bottom height of the vehicle to be detected is less than the first preset height). Please refer to Figure 5 , the connecting plate 210 rotates relative to the base 100 in the rotation direction X. Therefore, the blocking member 330 can move synchronously with the connecting plate 210, and the blocking member 330 gradually moves out of the position between the signal transmitter 310 and the signal receiver 320. Therefore, the signal receiver 320 can receive the signal sent by the signal transmitter 310. At this time, the chassis height detection device 10 emits a prompt message, and can remind the driver of the vehicle to be detected to drive the vehicle to be detected to the manual parking space for parking; or a vehicle handling device with a lower height can also be provided to automatically park the vehicle to be detected after transportation.

[0051] In this embodiment, the signal transmitter 310 and the signal receiver 320 may be arranged opposite to each other and at intervals on the base 100, and the blocking member 330 may be installed on the connecting plate 210; in other embodiments, the signal transmitter 310 and the signal receiver 320 may be installed at intervals on the connecting plate 210 and move synchronously with the connecting plate 210, and the blocking member 330 may be installed on the base 100 corresponding to the position between the signal transmitter 310 and the signal receiver 320.

[0052] In this embodiment, both ends of the pressing rod 220 are rotatably connected to the connecting plate 210, so that the pressing rod 220 rotates relative to the connecting plate 210 with its axis as the center of rotation. Therefore, when the bottom of the vehicle to be detected presses against the pressing rod 220 and moves relative to the chassis height detection device 10, the pressing rod 220 can be rolled with the bottom of the vehicle to be detected, thereby preventing the bottom of the vehicle to be detected from being worn or scratched.

[0053] Further, in other embodiments, the detection component 300 may also only include a signal sending component 310 and a signal receiving component 320, and the signal receiving component 320 is used to receive the signal sent by the signal sending component 310. The signal sending component 310 and the signal receiving component 320 may constitute a set of photoelectric detection components. The signal sending component 310 may send a photoelectric signal.

[0054] In one embodiment, the signal sending member 310 and the signal receiving member 320 can be installed on the base 100 and the connecting plate 210, respectively. When the bottom height of the vehicle to be detected is less than the first preset height, the bottom of the vehicle to be detected can touch the pressing rod 220 and press the pressing rod 220 during the process of the vehicle to be detected passing over the chassis height detection device 10, so that the pressing rod 220 and the connecting plate 210 can rotate relative to the base 100, so that the signal sending member 310 and the signal receiving member 320 can be misaligned when the connecting plate 210 rotates relative to the base 100, so that the signal receiving member 320 cannot receive the signal sent by the signal sending member 310, so that the detection component 300 can send a prompt message.

[0055] Here, the signal sending component 310 and the signal receiving component 320 can form a group of photoelectric switches. When the signal receiving component 320 can continuously receive the signal sent by the signal sending component 310, the detection component 300 does not issue a prompt message; and when the signal sending component 310 and the signal receiving component 320 are misaligned as the connecting plate 210 rotates relative to the base 100, the signal receiving component 320 cannot receive the signal sent by the signal sending component 310, so the detection component 300 can issue a prompt message.

[0056] Please read further Figure 2 In this embodiment, the base 100 includes a bracket 101 , a beam 102 and a protection plate 103 .

[0057] There may be two brackets 101 , and the two brackets 101 may be respectively connected to opposite ends of the cross beam 102 , and the brackets 101 may be fixedly connected to a preset installation position so that the chassis height detection device 10 may be installed at the preset installation position.

[0058] Among them, the signal transmitter 310 and the signal receiver 320 can be arranged at intervals on the cross beam 102. One end of the connecting plate 210 far from the pressing rod 220 can be rotatably connected to the cross beam 102 through a hinge 104. Among them, the protection plate 103 can be covered on the cross beam 102, so that the bracket 101, the protection plate 103, the cross beam 102 and the connecting plate 210 can form an accommodating space. At this time, the detection assembly 300 can be arranged in the accommodating space to protect the detection assembly 300.

[0059] Furthermore, the chassis height detection device 10 further includes a positioning plate 110. The positioning plate 110 is connected to the bracket 101 on the base 100. The positioning plate 110 is used to position the vehicle to be detected when the chassis height detection device 10 gradually passes through the bottom of the vehicle to be detected.

[0060] Specifically, when the driver drives the vehicle to be detected towards the chassis height detection device 10, the driver can adjust the forward direction of the vehicle according to the position of the positioning plate 110, so that the chassis height detection device 10 can gradually enter the bottom of the vehicle to be detected from the middle position in the width direction of the vehicle to be detected, so as to detect the bottom height of the vehicle to be detected.

[0061] Among them, one side of the positioning plate 110 facing the vehicle to be detected can be arc-shaped, and in the direction in which the chassis height detection device 10 gradually enters the bottom of the vehicle to be detected, the width of the positioning plate 110 gradually decreases.

[0062] Furthermore, an induction component (not shown in the figure) can also be arranged on the positioning plate 110. The induction component can be used to detect the wheels of the vehicle to be detected during the process that the chassis height detection device 10 gradually enters the bottom of the vehicle to be detected, so as to determine the distance between the wheels of the vehicle to be detected and the positioning plate 110; when the induction component detects that the distance between the wheel and the positioning plate 110 is less than or equal to a preset distance, a prompt message can be sent to remind the driver to adjust the traveling direction, so as to prevent the wheels of the vehicle to be detected from moving onto the positioning plate 110.

[0063] Please refer further to Figure 6 , Figure 6 is Figure 3 the sectional view of the chassis height detection device shown in the position where the elastic member is arranged.

[0064] In this embodiment, the chassis height detection device 10 further includes an elastic member 120. The opposite ends of the elastic member 120 are respectively connected to the cross beam 102 of the base 100 and the connecting plate 210, so that the base 100 and the connecting plate 210 are elastically connected. Among them, the elastic member 120 can make the pressing rod 220 on the connecting plate 210 tend to move away from the base 100.

[0065] Please refer to Figure 7 , Figure 7 which Figure 3 is a cross-sectional view of the chassis height detection device shown in the position where the limiting plate is set.

[0066] The connecting plate 210 further includes an abutting portion 211. A limiting plate 130 is further provided on the base 100. The elastic member 120 is used to press the abutting portion 211 of the connecting plate 210 against the limiting plate 130 to limit the position of the pressing rod 220.

[0067] Among them, by setting the elastic member 120 and the limiting plate 130, the position of the pressing rod 220 can be limited, so that when the height detection is not performed, the end of the pressing rod 220 away from the mounting plane of the base 100 is at a first preset height.

[0068] And when the chassis height detection device 10 passes under the bottom of the vehicle to be detected (and the bottom height of the vehicle to be detected is less than the first preset height), the bottom of the vehicle to be detected can press the pressing rod 220 so that the connecting plate 210 rotates relative to the base 100 along the rotation direction X. At this time, the elastic member 120 can be stretched or compressed; and when the chassis height detection device 10 passes under the bottom of the vehicle to be detected, under the action of the elastic force of the elastic member 120, the connecting plate 210 can be made to rotate relative to the base 100 along the direction opposite to the rotation direction X, so that the end of the pressing rod 220 away from the mounting plane of the base 100 can return to the first preset height.

[0069] Furthermore, the chassis height detection device 10 provided in this application can be applied to an automatic parking system.

[0070] Therefore, this application also provides an automatic parking system, where the automatic parking system can include the chassis height detection device 10, a controller, and a vehicle transporter as described above.

[0071] Please refer to Figures 8-9 . Among them, Figure 8 is a schematic diagram of the position structure of the chassis height detection device in the automatic parking system; Figure 9 is a schematic diagram of the position structure when the chassis height detection device performs height detection on the vehicle to be parked.

[0072] The chassis height detection device 10 can be set at the entrance position of the automatic parking garage, and the arc surface of the positioning plate 110 of the chassis height detection device 10 can be oriented towards the vehicle to be parked. When the vehicle to be parked gradually drives to the entrance position of the automatic parking garage, the chassis height detection device 10 can gradually pass through the bottom of the vehicle to be parked, so as to detect the bottom height of the vehicle to be parked.

[0073] When the bottom height of the vehicle to be parked is less than the first preset height, the chassis height detection device 10 can send a first prompt message to the controller. After the controller obtains the first prompt message, it stops using the vehicle transporter to automatically park the vehicle to be parked. At this time, the controller can issue a control instruction, and the vehicle to be parked can be parked in the manual parking space according to the control instruction.

[0074] When the bottom height of the vehicle to be parked is greater than or equal to the first preset height, the chassis height detection device 10 can send a second prompt message to the controller, and the controller can control the vehicle transporter to automatically park the vehicle to be parked according to the second prompt message.

[0075] In summary, those skilled in the art can easily understand that the beneficial effect of this application is: By setting the chassis height detection device on the driving route of the vehicle in the embodiment of this application, the bottom height of the vehicle can be detected. When it is detected that the bottom height of the vehicle is greater than or equal to the first preset height, the vehicle transporter can be used to automatically park the vehicle. Therefore, it is possible to avoid the problem that the vehicle transporter does not match the bottom height of the vehicle, resulting in scratches or abrasions on the bottom of the vehicle. At the same time, by setting the positioning plate, the driver of the vehicle can correct the driving route of the vehicle, so that the chassis height detection device can enter the bottom of the vehicle from the middle area in the width direction of the vehicle, thereby preventing the chassis height detection device from coming into contact with or colliding with the wheels of the vehicle.

[0076] The above are only the embodiments of this application, and do not limit the patent scope of this application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of this application.

Claims

1. A chassis height detection device for a vehicle, characterized in that, The chassis height detection device is used to detect the bottom height of a vehicle to be detected when it gradually passes through the bottom of the vehicle to be detected. The chassis height detection device includes: A base; A pressing component, including a connecting plate and a pressing rod. One end of the connecting plate is rotatably engaged with the base. The other end of the connecting plate extends away from the base and is used to mount the pressing rod. The pressing rod is arranged to face the bottom of the vehicle. The distance between the side of the pressing rod away from the base and the mounting surface of the base is a first preset height. Both ends of the pressing rod are rotatably connected to the connecting plate, so that the pressing rod rotates relative to the connecting plate with its axis as the rotation center; A detection component, which is used to send a prompt message when the distance between the side of the pressing rod away from the base and the mounting surface of the base is less than the first preset height. The detection component includes a signal sender and a signal receiver. The signal receiver is used to receive the signal sent by the signal sender. When there is a dislocation or partial blockage between the signal sender and the signal receiver, the detection component sends the prompt message.

2. The chassis height detection device according to claim 1, characterized in that, The signal sender and the signal receiver are respectively mounted on the base and the connecting plate; When the distance between the side of the pressing rod away from the base and the mounting surface of the base is less than the first preset height, the signal sender and the signal receiver are dislocated, so that the signal receiver does not receive the signal sent by the signal sender.

3. The chassis height detection device according to claim 1, characterized in that, The detection component includes a blocking piece; The signal sender and the signal receiver are spaced apart and mounted on the base; The blocking piece is mounted on the connecting plate, and the blocking piece is used to be arranged between the signal sender and the signal receiver to block the signal sent by the signal sender; Wherein, when the distance between the side of the pressing rod away from the base and the mounting surface of the base is less than the first preset height, the blocking piece at least partially disengages from the position between the signal sender and the signal receiver, so that the signal receiver receives the signal sent by the signal sender.

4. The chassis height detection device according to any one of claims 1 - 3, characterized in that, The chassis height detection device further includes a positioning plate, which is connected to the base. The positioning plate is used to position the vehicle to be detected when the chassis height detection device gradually passes through the bottom of the vehicle to be detected.

5. The chassis height detection device according to claim 4, characterized in that, The side of the positioning plate facing the vehicle to be detected is arc-shaped, and in the direction in which the chassis height detection device gradually enters the bottom of the vehicle to be detected, the width of the positioning plate gradually decreases.

6. The chassis height detection device according to claim 4, characterized in that, An induction component is further arranged on the positioning plate. The induction component is used to detect the wheels of the vehicle to be detected; The induction component is used to send a prompt message when the wheels reach a preset distance from the positioning plate.

7. The chassis height detection device according to claim 1, characterized in that, The chassis height detection device further includes an elastic member. The opposite ends of the elastic member are respectively connected to the base and the connecting plate, so that the base and the connecting plate are elastically connected.

8. The chassis height detection device according to claim 7, characterized in that, The connecting plate further includes an abutting portion, and a limiting plate is further arranged on the base. The elastic member is used to press the abutting portion of the connecting plate against the limiting plate to limit the position of the pressing rod.

9. An automatic parking system, characterized in that, The automatic parking system includes the chassis height detection device and the vehicle transporter according to any one of claims 1-8; when the chassis height detection device gradually passes through the bottom of the vehicle to be detected, the vehicle transporter is used to gradually move to the bottom of the vehicle to be detected to transport the vehicle to be detected to a preset position when the detection component does not send a prompt message.

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