Adjustable pedaling ladder, control method thereof and vehicle

Abstract

The invention discloses an adjustable pedaling ladder, a control method thereof and a vehicle. The control method comprises the following steps: acquiring a sensor signal of a preset area of the adjustable pedaling ladder, wherein the sensor signal is used for judging whether a target object exists in the preset area of the adjustable pedaling ladder; under the condition that it is determined that the target object exists in the preset area, vehicle working condition information in the target scene is obtained, and the vehicle working condition information comprises at least one of the vehicle speed and vehicle door state information; under the condition that it is determined that the vehicle working condition information meets the preset condition, weather type information in the target scene is obtained, and the weather type information comprises at least one of sunny day information, rainy day information, cloudy day information and snowy day information; based on the weather type information, a first control strategy set is generated, and the first control strategy set is used for controlling whether a purging system executes a preset action or not so as to conduct purging operation on the adjustable pedal ladder. The technical problems that in the prior art, a pedaling ladder is poor in environmental adaptability and insufficient in safety are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive safety testing. Specifically, it relates to an adjustable boarding ladder, its control method, and a vehicle. Background Art

[0002] Currently, the boarding ladders of commercial vehicles on the market generally have limitations in design and do not fully consider the needs of users in different environments. Most commercial vehicles are equipped with fixed boarding ladders, which are often fixed at a certain height on the vehicle body and cannot be adjusted according to the height of the occupants or the terrain where the vehicle is located. As a result, additional physical effort may be required for people to get on and off the vehicle, especially when loading goods or carrying heavy objects, and this problem is more prominent. In addition, fixed boarding ladders perform poorly in the face of adverse weather conditions. In rainy or snowy weather, the slippery surface of the boarding ladder increases the risk of slipping for the occupants and reduces the safety of getting on and off the vehicle.

[0003] Traditional boarding ladders also lack intelligent functions and cannot be linked with the vehicle's state (such as vehicle speed, door opening and closing status), so they cannot automatically extend or retract at the appropriate time. The absence of this linkage mechanism not only affects the riding experience but also may cause the boarding ladder to unexpectedly extend during driving, posing a safety hazard.

[0004] In response to the above problems, no effective solution has been proposed yet. Summary of the Invention

[0005] Embodiments of the present invention provide an adjustable boarding ladder, its control method, and a vehicle to at least solve the technical problems of poor environmental adaptability and insufficient safety of the boarding ladder in the prior art.

[0006] According to one aspect of the embodiments of the present invention, to achieve the above object, a control method for an adjustable boarding ladder is provided, including: obtaining sensor signals in a preset area of the adjustable boarding ladder, where the sensor signals are used to determine whether there is a target object in the preset area of the adjustable boarding ladder; when it is determined that there is a target object in the preset area, obtaining vehicle condition information in the target scenario, where the vehicle condition information includes at least one of vehicle speed and door status information; when it is determined that the vehicle condition information meets the preset conditions, obtaining weather type information in the target scenario, where the weather type information includes at least one of sunny day information, rainy day information, cloudy day information, and snowy day information; generating a first control strategy set based on the weather type information, and the first control strategy set is used to control whether the purging system performs a preset action to purge the adjustable boarding ladder.

[0007] Further, the method includes: when it is determined that the purging system performs a purging operation, obtaining a pressure signal of the adjustable boarding ladder, and generating a second control strategy set based on the pressure signal, where the second control strategy set is used to control at least part of the boarding ladder to rise or fall by a preset height.

[0008] Further, before generating the second control strategy set based on the pressure signal, it includes: when it is determined that the purging system performs a stop operation, generating a third control strategy set, where the third control strategy set is used to control the adjustable boarding ladder to be in the working position; when it is determined that the adjustable boarding ladder is in the working position, obtaining the pressure signal.

[0009] Further, when it is determined that the vehicle condition information meets a preset condition, obtaining weather type information in a target scenario, including: when it is determined that the vehicle speed meets a preset vehicle speed range, obtaining door state information; when it is determined that the door state information is in a closed state, obtaining weather type information in the target scenario.

[0010] Further, generating the first control strategy set based on the weather type information includes: when it is determined that the weather type information is sunny or cloudy, generating a first control strategy and a second control strategy in the first control strategy set, where the first control strategy is used to control the purging system not to perform a purging operation on the adjustable boarding ladder, and the second control strategy is used to control the adjustable boarding ladder to be in the working position; when it is determined that the weather type information is rainy or snowy, a third control strategy and a fourth control strategy, where the third control strategy is used to control the purging system to perform a preset action to purge the adjustable boarding ladder, and the fourth control strategy is used to control the adjustable boarding ladder to be in the working position after the purging operation of the purging system is completed.

[0011] Further, generating the second control strategy set based on the pressure signal includes: determining whether the pressure signal meets a preset pressure within a preset time; if so, generating a fifth control strategy in the second control strategy set, where the fifth control strategy is used to control at least part of the boarding ladder to rise or fall by a preset height; if not, generating a sixth control strategy in the second control strategy set, where the sixth control strategy is used to control the adjustable boarding ladder to be in the storage position.

[0012] According to another aspect of the embodiments of the present invention, an adjustable boarding ladder is further provided. The adjustable boarding ladder is controlled by using any one of the above control methods, and includes: an adjustable boarding ladder assembly, where the adjustable boarding ladder assembly is connected to a vehicle frame on one side of the vehicle; a purging system, and at least part of the purging system is connected to the adjustable boarding ladder assembly to perform a purging operation on the adjustable boarding ladder.

[0013] Further, the adjustable boarding ladder includes: an infrared sensor, which is arranged on the same side of the vehicle as the adjustable boarding ladder assembly, and the infrared sensor is used to obtain the sensor signal in the preset area of the adjustable boarding ladder; a sunlight and rain sensor, which is arranged at the front windshield of the vehicle, and the sunlight and rain sensor is used to obtain the weather type information in the target scenario; a control unit, which is electrically connected to the purging system, the infrared sensor and the sunlight and rain sensor, and the control unit can also be used to obtain the vehicle working condition information in the target scenario.

[0014] Further, the adjustable boarding ladder further includes an electric strut, and the electric strut is movably connected to the adjustable boarding ladder assembly. By controlling the electric strut to move along the preset direction, the adjustable boarding ladder assembly can be switched between the working position and the storage position.

[0015] Further, the adjustable boarding ladder assembly includes: a bracket assembly, which is connected to the vehicle frame, and the bracket assembly includes a first bracket and a second bracket, and the first bracket and the second bracket are arranged at intervals along the length direction of the vehicle frame; two boarding ladder frames, each boarding ladder frame has an accommodation space, each boarding ladder frame is respectively connected to the first bracket and the second bracket, and the electric strut is movably connected to at least one boarding ladder frame. By controlling the electric strut to switch between the working position and the storage position, the boarding ladder frame can be raised or lowered by a first preset height; a pulley system, which is arranged inside the accommodation space; a power device, one end of which is connected to the vehicle frame and the other end of which is connected to the pulley system; a boarding pedal, and both ends of the boarding pedal are connected to the pulley system; wherein, by controlling the pulley system to rotate along the preset direction through the power device, the boarding pedal is raised or lowered by a second preset height.

[0016] Further, the pulley system includes a first pulley assembly and a second pulley assembly, and the first pulley assembly and the second pulley assembly are respectively connected to the boarding ladder frames on both sides. At least one of the first pulley assembly and the second pulley assembly includes: a driving wheel, the output shaft of the power device is connected to the driving wheel, and the driving wheel is located at one end of the boarding ladder frame close to the bracket assembly; a driven wheel, the driving wheel and the driven wheel are connected by a belt, the driven wheel is located at one end of the boarding ladder frame far from the bracket assembly, and the driven wheel is connected to the boarding ladder frame; a boarding ladder pulley, which is arranged between the driving wheel and the driven wheel, and the boarding ladder pulley abuts against the belt, and both ends of the boarding pedal are connected to the boarding ladder pulley.

[0017] Further, the purging system is provided with one or more purging ports, and the purging ports are arranged on the boarding pedal.

[0018] Further, a pressure sensor is arranged on the boarding pedal.

[0019] According to another aspect of the embodiments of the present invention, a vehicle is provided, including an adjustable boarding ladder, and the adjustable boarding ladder is the adjustable boarding ladder of any one of the above.

[0020] In the embodiments of the present invention, through integrating a variety of sensor signals, vehicle operating conditions information and environmental data, intelligent control of the adjustable boarding ladder is realized, which can be automatically adjusted according to environmental changes, effectively avoiding the slipping risk caused by rainy or snowy weather, and at the same time avoiding misoperations when the vehicle is driving or the door is not closed. This design not only optimizes the use experience of the vehicle, but also solves the technical problems of poor environmental adaptability and insufficient safety of the boarding ladder in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 The hardware structure block diagram of the vehicle terminal according to one embodiment of the present invention is shown;

[0023] Figure 2 The flowchart of the control method of the adjustable boarding ladder according to one optional embodiment of the present invention is shown;

[0024] Figure 3 The electrical architecture diagram of the control method of the adjustable boarding ladder according to one optional embodiment of the present invention is shown;

[0025] Figure 4 The control logic diagram of the control method of the adjustable boarding ladder according to one optional embodiment of the present invention is shown;

[0026] Figure 5 The schematic structural diagram of the adjustable boarding ladder according to one optional embodiment of the present invention is shown.

[0028] 1. Frame;

[0029] 2. First bracket;

[0030] 3. Second bracket;

[0031] 4. Power device;

[0032] 5. Infrared sensor;

[0033] 6. Electric strut;

[0034] 7. Driving wheel;

[0035] 8. Belt;

[0036] 9. Driven wheel;

[0037] 10. Pedaling ladder pulley;

[0038] 11. Pedaling pedal;

[0039] 12. Blowing port;

[0040] 13. Pressure sensor;

[0041] 14. Pedaling ladder frame. Detailed implementation manner

[0042] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0044] According to the embodiments of the present invention, a method embodiment of a method for testing the security of an automotive private remote communication protocol is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described here can be executed in a different order from that here.

[0045] This method embodiment can be executed in an electronic device or a similar computing device including a memory and a processor. As Figure 1As shown, taking the operation on the vehicle terminal as an example, the vehicle terminal may include one or more processors 102 (the processors may include, but are not limited to, processing devices such as a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a Digital Signal Processing (DSP) chip, a Micro Controller Unit (MCU), a Field Programmable Gate Array (FPGA), a Neural-network Processor Unit (NPU), a Tensor Processing Unit (TPU), an Artificial Intelligence (AI) type processor, etc.) and a memory 104 for storing data. Optionally, the above vehicle terminal may further include a transmission device 106 for communication functions, an input / output device 108, and a display 110. Those of ordinary skill in the art can understand that the above structural description is only illustrative and does not limit the structure of the above vehicle terminal. For example, the terminal may further include more or fewer components than the above structural description, or have a configuration different from the above structural description.

[0046] The memory 104 can be used to store computer programs, for example, software programs and modules of application software. The processor executes various functional applications and data processing by running the computer programs stored in the memory 104. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memories. In some instances, the memory 104 may further include a memory remotely located relative to the processor, and these remote memories can be connected to the mobile terminal through a network. Examples of the above network include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0047] The transmission device 106 is used to receive or send data via a network. Specific examples of the above network may include a wireless network provided by a communication provider of the mobile terminal. In one instance, the transmission device 106 includes a Network Interface Controller (NIC), which can be connected to other network devices through a base station and thus communicate with the Internet. In one instance, the transmission device 106 can be a Radio Frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0048] The display 110 can be, for example, a touch-screen liquid crystal display (LCD) and a touch display (also referred to as a "touch screen" or "touch display screen"). The liquid crystal display enables a user to interact with the user interface of the mobile terminal. In some embodiments, the above-mentioned mobile terminal has a graphical user interface (GUI), and the user can perform human-computer interaction with the GUI through finger contacts and / or gestures on the touch-sensitive surface. The human-computer interaction function here optionally includes the following interactions: creating web pages, drawing, word processing, creating electronic documents, games, video conferencing, instant messaging, sending and receiving emails, call interfaces, playing digital videos, playing digital music, and / or web browsing, etc. The executable instructions for performing the above human-computer interaction functions are configured / stored in a computer program product or readable storage medium executable by one or more processors.

[0049] In this embodiment, a control method for an adjustable boarding ladder is provided. Specifically, as Figure 2 shown, the control method includes:

[0050] S102. Obtain the sensor signal of the preset area of the adjustable boarding ladder, and the sensor signal is used to determine whether there is a target object in the preset area of the adjustable boarding ladder;

[0051] Optionally, the preset area is on the side of the vehicle where the adjustable boarding ladder is located, within 3 m from the vehicle door. Whether there is a target object is detected based on an infrared sensor. In this embodiment, the target object is a person. The infrared sensor senses heat or objects by emitting and receiving infrared rays, and is particularly suitable as a target object detection tool because it is not limited by light conditions and can work effectively even at night or in an environment with insufficient light.

[0052] S104. When it is determined that there is a target object in the preset area, obtain the vehicle condition information in the target scenario, where the vehicle condition information includes at least one of vehicle speed and door status information;

[0053] The acquisition of vehicle condition information aims to verify whether the vehicle is currently in a state where the boarding ladder can be safely deployed. For example, if the vehicle speed is non-zero or the door is not closed, deploying the boarding ladder may pose a safety threat to pedestrians or passengers and may also cause equipment damage. By obtaining vehicle condition information in real time, the present invention can achieve dynamic adjustment of the intelligent adjustable boarding ladder. This intelligent control logic can not only improve the safety factor, but also provide personalized boarding assistance according to actual needs and external environmental conditions, greatly enhancing the passenger experience and the practicality of the equipment.

[0054] S106. When it is determined that the vehicle operating condition information meets the preset conditions, obtain the weather type information in the target scenario, where the weather type information includes at least one of sunny day information, rainy day information, cloudy day information, and snowy day information;

[0055] The weather type information is crucial for the safe operation of the intelligent boarding ladder. For example, on rainy and snowy days, the water accumulation or snow on the pedal will make the boarding ladder slippery, increasing the risk of passengers slipping when boarding the vehicle. The acquisition and analysis of the weather type information play a crucial role in the control logic of the intelligent adjustable boarding ladder. It not only enhances the safety and practicality of the control of the adjustable boarding ladder, but also optimizes the passenger experience, reduces the maintenance cost, and realizes the reasonable allocation of resources.

[0056] S108. Based on the weather type information, generate a first control strategy set, which is used to control whether the purging system performs a preset action to purge the adjustable boarding ladder.

[0057] Through the above steps S102 to S108, in the embodiment of the present invention, by integrating various sensor signals, vehicle operating condition information, and environmental data, the intelligent control of the adjustable boarding ladder is realized, which can be automatically adjusted according to environmental changes, and the adjustable boarding ladder is purged through the purging system, effectively avoiding the slipping risk caused by rainy and snowy weather, and at the same time avoiding misoperations when the vehicle is driving or the door is not closed. This design not only optimizes the use experience of the vehicle, but also solves the technical problems of poor environmental adaptability and insufficient safety of the boarding ladder in the prior art.

[0058] Further, the method includes: when it is determined that the purging system performs the purging operation, obtain the pressure signal of the adjustable boarding ladder, and generate a second control strategy set based on the pressure signal, which is used to control at least part of the boarding ladder to rise or fall by a preset height. Determining that the purging action is performed means that there is a foreign object on the boarding ladder, and purging can further improve safety. Obtaining the pressure signal of the adjustable boarding ladder can monitor in real time whether there is a load on the boarding ladder, that is, whether someone stands on the boarding ladder. This information is crucial for determining whether the boarding ladder should start the automatic lifting function, avoiding energy waste and equipment loss caused by no-load operation. The control strategy based on the pressure signal is not limited to fixed raising or lowering, but can also be flexibly adjusted to the most suitable height for passengers to board the vehicle according to the actual load situation and vehicle state. This personalized service can meet the needs of different types of passengers, such as passengers carrying large pieces of luggage, the elderly or children, etc., making the boarding process easier.

[0059] Specifically, before generating the second control strategy set based on the pressure signal, it includes: when it is determined that the purging system stops operating, generating a third control strategy set, where the third control strategy set is used to control the adjustable boarding ladder to be in the working position; when it is determined that the adjustable boarding ladder is in the working position, acquiring the pressure signal. This step ensures that when there is no foreign object on the boarding ladder, the purging system does not operate, and the boarding ladder can still be accurately positioned in the working position, waiting for the trigger of the pressure signal. In this embodiment, the adjustable boarding ladder is unfolded by 40 - 50°, that is, the adjustable boarding ladder is in the working position.

[0060] Specifically, when it is determined that the vehicle condition information meets the preset conditions, acquiring the weather type information in the target scenario includes: when it is determined that the vehicle speed meets the preset vehicle speed range, acquiring the door status information; when it is determined that the door status information is in the closed state, acquiring the weather type information in the target scenario. This step, through the judgment of the vehicle condition information, ensures that the acquisition of the weather type information and the generation of the corresponding control strategy are carried out only when the vehicle meets the preset vehicle speed range and the doors are closed. In this embodiment, the preset vehicle speed range is that the vehicle speed is 0 or in a relatively stationary state. It improves the response speed and accuracy of the system, avoids misoperations when the vehicle is moving or the doors are not closed, and ensures that the boarding ladder is intelligently adjusted in a safe environment, enhancing the user's sense of security and comfort.

[0061] Specifically, generating the first control strategy set based on the weather type information includes: when it is determined that the weather type information is sunny or cloudy, generating the first control strategy and the second control strategy in the first control strategy set, where the first control strategy is used to control the purging system not to perform purging operations on the adjustable boarding ladder, and the second control strategy is used to control the adjustable boarding ladder to be in the working position; when it is determined that the weather type information is rainy or snowy, generating the third control strategy and the fourth control strategy, where the third control strategy is used to control the purging system to perform a preset action to purge the adjustable boarding ladder, and the fourth control strategy is used to control the adjustable boarding ladder to be in the working position after the purging operation of the purging system is completed. Different control strategies are generated according to the weather type information. On sunny or cloudy days, the boarding ladder remains in the working position without purging; on rainy or snowy days, the purging system is started, and after removing snow or water accumulation, the boarding ladder is placed in the working position. It improves the environmental adaptability and safety of the boarding ladder, avoids the risk of slipping in rainy and snowy weather, and enhances the user's safety and comfort.

[0062] In a specific embodiment, assume that in a city on a cold winter day, a commercial bus equipped with an adjustable boarding ladder is parked at a bus stop, waiting for passengers to get on and off. The vehicle is in a completely stationary state at this time, with a vehicle speed of 0 km / h, the doors are closed, and the sunlight and rainfall sensor shows that it is currently light snowing. After the system receives the "snowy day" information, it immediately activates the control purge system to perform a preset action to purge the adjustable boarding ladder. Compressed air is used to pass through the purge openings arranged on the surface of the boarding ladder to remove the snow, keep the boarding ladder dry, and reduce the risk of passengers slipping when boarding. After the purging is completed, the boarding ladder is deployed according to the instruction, and the adjustable boarding ladder is controlled to be in the working position, ready to welcome passengers to board.

[0063] In another specific embodiment, on a sunny afternoon in spring, a commercial vehicle equipped with an intelligent adjustable boarding ladder is parked at a busy station, ready to welcome passengers to get on and off. The sunlight and rainfall sensor detects that the current weather is sunny, without any signs of rainfall or snowfall, and the vehicle operating condition information shows that the vehicle speed is 0 and the doors are closed. Based on the detected sunny day information, the first control strategy is automatically generated and executed, that is, the purge system is not activated to purge the boarding ladder. The purpose of this strategy is to avoid wasting energy in sunny or cloudy environments where there is no need to clear a slippery surface, and at the same time reduce the wear of the compressor and the purge system, extending the equipment life. Immediately afterwards, the second control strategy is generated to control the adjustable boarding ladder to be in the working position. The boarding ladder is adjusted to the optimal angle, usually between 45 - 50 degrees, to ensure the comfort and safety of passengers when boarding. At the same time, the state of the boarding ladder is monitored to confirm that it has reached the preset stable working position. Under the guidance of sunny or cloudy day information, the adjustable boarding ladder realizes the intelligent management of the purge system and the position of the boarding ladder by generating the first and second control strategies. This not only saves energy, reduces equipment wear, but also greatly improves the passenger riding experience.

[0064] Specifically, generating the second control strategy set based on the pressure signal includes: judging whether the pressure signal meets the preset pressure within a preset time; if so, generating the fifth control strategy in the second control strategy set, and the fifth control strategy is used to control at least part of the boarding ladder to rise or fall by a preset height; if not, generating the sixth control strategy in the second control strategy set, and the sixth control strategy is used to control the adjustable boarding ladder to be in the storage position. Through the real-time monitoring of the pressure signal, control strategies are generated according to the intensity and duration of the pressure signal to automatically adjust the height of the boarding ladder or store it, reducing the complexity of user operation. The pressure sensor can detect the load change on the boarding ladder in real time. Whether it is the standing of passengers or the placement of items, it can quickly identify and respond, providing an accurate basis for the generation of subsequent control strategies.

[0065] In a specific embodiment, when the vehicle is stationary, the door is closed, and the weather is clear, a passenger approaches the vehicle. The infrared sensor detects the approaching signal, and the boarding ladder automatically unfolds and remains stable. The passenger stands on the boarding ladder, and the pressure sensor immediately detects the weight (i.e., the pressure signal) within the threshold range preset by the system. Within a few seconds after the passenger stands on it, the system continuously monitors the pressure signal. Once it is confirmed that the signal is stable and reaches the preset pressure condition, a fifth control strategy is generated to control the boarding ladder to rise to a preset height to meet the boarding height requirement of the passenger.

[0066] In another specific embodiment, when the vehicle stops at a bus stop, the infrared sensor detects someone approaching, but no pressure signal is detected within the preset time (60 seconds). Since no signal meeting the preset pressure condition is detected within this time, it is considered that no one is using the boarding ladder. Immediately, a sixth control strategy is generated to control the automatic retraction of the boarding ladder and move it to the storage position. In this embodiment, the adjustable boarding ladder is in the storage position, that is, it is arranged parallel to one side of the door. This mechanism avoids the waste of energy and unnecessary waiting, and at the same time prevents accidental injuries or damages to the boarding ladder when it is not in use, improving the overall operating efficiency and safety of the system.

[0067] As Figure 3 shown, in the control method of the adjustable boarding ladder, the acquisition and transmission of signals are the key links to achieve automatic control. The system uses three main sensors to obtain environmental and usage status information: Sunshine and rain sensor: This is an advanced sensor installed at a specific position on the vehicle (such as above the front windshield), which can continuously monitor the external weather conditions, identify the differences between sunny, cloudy, rainy, and snowy days, especially can sense the changes in rainfall and light intensity. The information of the sunshine and rain sensor is crucial for judging whether to start the purging system to ensure that the boarding ladder can be cleaned before the passenger boards the vehicle in bad weather and maintain a dry and clean state. Infrared sensor: The infrared sensors located around the boarding ladder are mainly used to detect the approach of the human body or other objects. Its working principle is based on the emission and reflection of infrared rays, which can identify dynamic objects in the surrounding environment and can work effectively especially in low light conditions. Once the infrared sensor detects someone approaching the boarding ladder, it will immediately send an approaching signal to the vehicle control unit (VCU), triggering the subsequent detection and control process. The pressure sensor installed on the boarding ladder is responsible for monitoring whether there is a passenger or heavy object on the boarding ladder. It judges the load state of the boarding ladder by detecting the pressure on the tread surface. When an effective load is detected, the pressure sensor will send a pressure signal to the VCU, which is one of the important bases for controlling the automatic operation of the boarding ladder. Through the comprehensive analysis and quick response of the VCU to various sensor signals, the system can automatically adjust according to different conditions and generate at least one of the first control strategy set, the second control strategy set, and the third control strategy set to determine the operating state of the boarding ladder.

[0068] As Figure 4 shown, when the infrared sensor detects that the target approaches the preset area of the boarding ladder, the system immediately starts the preliminary detection process. The VCU (Vehicle Control Unit) detects the driving state of the vehicle in real time. If the vehicle speed is greater than 0, that is, the vehicle is moving, the system will not respond to prevent the boarding ladder from being activated during vehicle travel, ensuring the safety of passengers and the vehicle. Only when the vehicle speed is 0, that is, the vehicle is in a stationary state, will the system further check whether the door is closed. If the door is not closed, the system will not continue to execute either, to avoid misoperation when the door is open and prevent accidental injury to passengers. When it is determined that the vehicle speed is 0 and the door is in the closed state, the system then detects the weather condition through the sunlight and rain sensor. If the current weather is rain or snow, the system will automatically start the purging program, using compressed air to remove the snow or rain on the boarding ladder, ensuring that the pedal is dry and preventing passengers from slipping. After purging, the system unfolds the boarding ladder to the working position, ready to welcome passengers to board; if the current weather is sunny or cloudy and there are no foreign objects on the adjustable boarding ladder, the system does not need to perform the purging action and directly unfolds the boarding ladder to the working position, ready to welcome passengers to board; after the boarding ladder is unfolded, the pressure sensor starts to continuously monitor the load on the pedal. Once an effective load is detected (i.e., a passenger stands on the boarding ladder), the system will immediately start the motor and adjust the height of the boarding ladder according to the passenger's height or boarding needs to ensure that the passenger can easily reach the vehicle entrance. After the boarding ladder is in the working position, if the pressure sensor does not detect any load within 60 seconds, it is determined that the boarding ladder is not in use, and the VCU will control the boarding ladder to be in the stowed position, closing the entire operation process, avoiding waste of energy, and making preparations for the next use.

[0069] In a specific embodiment, on a cold winter morning, a commercial passenger vehicle parked at a bus stop is waiting for passengers to board. The sunlight and rain sensor detects snowfall, and the infrared sensor senses that passengers are approaching the vehicle. When the infrared sensor detects a passenger approach signal, the system immediately starts the detection process. It confirms the vehicle speed and door status: the vehicle is stationary (vehicle speed is 0) and the doors are closed, meeting the conditions for further control. Since the sunlight and rain sensor indicates a snowy day, the system then initiates the purging action. Compressed air is ejected from the purging port of the boarding ladder, effectively clearing the snow on the pedal and ensuring the dryness and safety of the pedal. After the purging is completed, the boarding ladder is quickly deployed and adjusted to a preset inclination angle of 45 - 50 degrees, in the working position, waiting for passengers to board. When a passenger stands on the boarding ladder, the pressure sensor immediately detects a pressure signal, and the system starts the motor to adjust the height of the boarding ladder until the passenger reaches the door. If the pressure sensor does not detect pressure again within 60 seconds (i.e., the passenger has left or no new passengers have boarded), the electric strut automatically retracts the boarding ladder, and the system returns to the standby state, ready to meet the next boarding requirement. Through this refined control logic, the intelligent adjustable boarding ladder can automatically adjust according to the real-time environment and passenger needs, not only improving the safety and comfort of passengers boarding but also significantly enhancing the vehicle's adaptability in complex weather conditions. At the same time, through intelligent energy management, it achieves efficient energy conservation, providing a more user-friendly and intelligent solution for modern vehicles.

[0070] According to another aspect of the embodiments of the present invention, an adjustable boarding ladder is provided. The adjustable boarding ladder is controlled by using the control method of any one of the above embodiments, and includes: an adjustable boarding ladder assembly and a purging system. The adjustable boarding ladder assembly is connected to the vehicle frame 1 on one side of the vehicle; at least part of the purging system is connected to the adjustable boarding ladder assembly to perform a purging operation on the adjustable boarding ladder.

[0071] In the embodiments of the present invention, by integrating various sensor signals, vehicle operating conditions information, and environmental data, intelligent control of the adjustable boarding ladder assembly is achieved, which can automatically adjust according to environmental changes. The purging system performs a purging operation on the adjustable boarding ladder, effectively avoiding the slipping risk caused by rain and snow weather, and at the same time avoiding misoperations when the vehicle is moving or the doors are not closed. This design not only optimizes the vehicle's usage experience but also solves the technical problems of poor environmental adaptability and insufficient safety of the boarding ladder in the prior art.

[0072] Furthermore, the adjustable step ladder includes: an infrared sensor 5, a sunlight and rain sensor, and a control unit. The infrared sensor 5 and the adjustable step ladder assembly are arranged on the same side of the vehicle. The infrared sensor is used to obtain the sensor signal of the preset area of the adjustable step ladder; the sunlight and rain sensor is arranged at the front windshield of the vehicle, and the sunlight and rain sensor is used to obtain the weather type information under the target scene; the control unit is electrically connected to the scanning system, the infrared sensor 5, and the sunlight and rain sensor. The control unit can also be used to obtain the vehicle working condition information under the target scene. Through the design of the infrared sensor 5 and the sunlight and rain sensor, the target object and weather type information of the preset area of the step ladder can be monitored in real time. The control unit generates corresponding control strategies based on this information to realize the intelligent adjustment of the step ladder.

[0073] The infrared sensor 5 and the adjustable step ladder assembly are arranged on the same side of the vehicle, and are specifically used to monitor the preset area of the adjustable step ladder. It can instantly detect the approach signal of the target object and quickly feed back to the control unit, thus avoiding potential collision risks.

[0074] Based on all the information received, the VCU can generate the optimal set of control strategies. For example, when a passenger is approaching and the vehicle is stationary with the doors closed, if the weather conditions are bad, the system will prioritize the purge program, then deploy the ladder and wait for the passengers to board; in clear weather, the system simplifies the process and directly deploys the ladder to save energy and improve efficiency. Throughout the control process, the VCU can ensure the safe operation of the system, especially when the vehicle is moving or the doors are not closed, to avoid the wrong deployment of the ladder and reduce potential safety hazards. In addition, intelligent control also improves the reliability of the system, and can ensure the normal operation of the ladder even in complex usage environments.

[0075] Specifically, the adjustable step ladder also includes an electric support rod 6, which is movably connected to the adjustable step ladder assembly. By controlling the electric support rod 6 to move along a preset direction, the adjustable step ladder assembly can be switched between a working position and a storage position.

[0076] Furthermore, the adjustable boarding ladder assembly includes: a bracket assembly, a boarding ladder frame 14, a pulley system, a power device 4, and a boarding pedal 11. The bracket assembly is connected to the vehicle frame 1. The bracket assembly includes a first bracket 2 and a second bracket 3, and the first bracket 2 and the second bracket 3 are arranged at intervals along the length direction of the vehicle frame 1. There are two boarding ladder frames 14, each boarding ladder frame 14 has an accommodation space, and each boarding ladder frame 14 is respectively connected to the first bracket 2 and the second bracket 3. The electric strut 6 is movably connected to at least one boarding ladder frame 14. By controlling the electric strut 6 to switch between the working position and the storage position, the boarding ladder frame 14 can be raised or lowered by a first preset height. The pulley system is arranged inside the accommodation space. One end of the power device 4 is connected to the vehicle frame 1, and the other end of the power device 4 is connected to the pulley system. Both ends of the boarding pedal 11 are connected to the pulley system. Wherein, by controlling the pulley system to rotate in a preset direction through the power device 4, the boarding pedal 11 is raised or lowered by a second preset height.

[0077] The distribution of the first bracket 2 and the second bracket 3 ensures the balance of the boarding ladder during the unfolding process, avoids the structural instability caused by single-point force, and provides a solid foundation for the boarding ladder frame 14. The design of the distance between the two brackets fully considers the width of the vehicle and the effective unfolding area of the boarding ladder, enabling the maximum function to be exerted within a limited space.

[0078] The electric strut 6 is movably connected to the boarding ladder frame 14. Through the telescopic action of the electric strut 6, the boarding ladder frame 14 can be flexibly switched between the working position and the storage position. When the boarding ladder frame 14 is in the storage position, it is arranged parallel to the vehicle door. When the boarding ladder frame 14 is in the working position, there is a first included angle between the boarding ladder frame 14 and the vehicle frame 1, and the range of the first included angle is 45 to 50°. The telescoping of the electric strut 6 not only controls the unfolding and retracting of the boarding ladder frame 14, but more importantly, it can also drive the boarding ladder frame 14 to achieve the lifting of the first preset height. When the boarding ladder frame 14 is switched from the storage position to the working position, the bottom of the boarding ladder frame 14 rises by the first preset height. In this embodiment, the range of the first preset height is 0.05 to 0.15 m.

[0079] In this embodiment, the power device 4 adopts a motor, one end of which is connected to the vehicle frame 1, and the other end is connected to the pulley system, providing power for the entire transmission chain. The rotation of the motor is converted into the linear motion of the boarding pedal 11 through the pulley system, that is, rising or falling by a second preset height. This transmission method is not only efficient, but also can accurately control the moving distance and speed of the pedal, ensuring the safety and comfort of passengers during boarding.

[0080] Optionally, both ends of the pedaling pedal 11 are connected to the pulley system. Its surface design takes into account anti-slip and shock-absorbing characteristics to ensure that passengers can board safely even in slippery or bumpy environments. The lifting of the pedal is achieved through the transmission of the pulley system. In this embodiment, the second preset height range is 1 to 1.1 m.

[0081] Specifically, as Figure 5 shown, the pulley system includes a first pulley assembly and a second pulley assembly. The first pulley assembly and the second pulley assembly are respectively connected to the two sides of the boarding ladder frame 14. At least one of the first pulley assembly and the second pulley assembly includes: a driving wheel 7, a driven wheel 9, and a boarding ladder pulley 10. The output shaft of the power device 4 is connected to the driving wheel 7. The driving wheel 7 is located at one end of the boarding ladder frame 14 close to the bracket assembly; the driving wheel 7 and the driven wheel 9 are connected by a belt 8. The driven wheel 9 is located at one end of the boarding ladder frame 14 away from the bracket assembly, and the driven wheel 9 is connected to the boarding ladder frame 14; the boarding ladder pulley 10 is arranged between the driving wheel 7 and the driven wheel 9, and the boarding ladder pulley 10 abuts against the belt 8. Both ends of the pedaling pedal 11 are connected to the boarding ladder pulley 10.

[0082] The driving wheel 7 is the driving component in the pulley system. It is usually made of metal materials and has high strength and wear resistance. The rotation of the driving wheel 7 provides the power source for the movement of the entire pulley system. It can effectively convert the power of the power device into the lifting of the boarding ladder, ensuring the stability and reliability of the boarding ladder during use.

[0083] The driven wheel 9 is located at the other end of the pulley system, that is, one end of the boarding ladder frame 14 away from the bracket assembly. The function of the driven wheel 9 is to change the movement direction of the belt 8 so that it can circulate effectively along both ends of the boarding ladder frame 14.

[0084] The driving wheel 7 and the driven wheel 9 are respectively located at both ends of the boarding ladder frame 14, forming a stable support structure to ensure that the belt 8 will not shift or slip during the lifting of the boarding ladder, improving the overall stability and reliability of the system. The belt 8 is the key transmission component connecting the driving wheel 7, the driven wheel 9, and the boarding ladder pulley 10. It is usually made of materials with high strength and low elongation, such as polyurethane or rubber. It can transmit the power from the driving wheel 7 to the driven wheel 9 and the boarding ladder pulley 10 to achieve the lifting of the pedaling pedal 11.

[0085] The output shaft of the power device 4 is directly connected to the driving wheel 7 located at one end of the boarding ladder frame 14. When receiving an instruction from the control unit (such as the VCU), the motor starts to operate, driving the driving wheel 7 to rotate. When the driving wheel 7 rotates, it drives the driven wheel 9 in the relative position to rotate through the belt 8 that fits closely with it. The driven wheel 9 is located at the end of the boarding ladder frame 14 away from the bracket assembly, and its function is to guide the direction of the belt 8 to complete the transmission and circulation of power. The driving wheel 7 and the driven wheel 9 constitute a circulating transmission system, ensuring the continuous transmission of power. Both ends of the boarding pedal 11 are connected to the boarding ladder pulley 10. As the driving wheel 7 and the driven wheel 9 rotate, the belt 8 drives the boarding ladder pulley 10 to rotate, thereby enabling the boarding pedal 11 to rise or fall along a preset path by a second preset height to complete the height adjustment. Through the precise control of the motor and the efficient transmission of the pulley system, the boarding ladder can achieve precise vertical height adjustment. Whether it is rising or falling, it can be quickly adjusted to the most suitable position, greatly improving the convenience and comfort of passengers boarding the vehicle. The pulley system uses belt drive instead of traditional gears or chains, greatly reducing mechanical friction and operating noise. The flexibility of the belt absorbs the impact during the movement process, making the lifting and lowering of the boarding ladder more stable and creating a quiet and stable boarding environment for passengers.

[0086] In this embodiment, the axes of the driving wheel 7, the driven wheel 9, and the boarding ladder pulley 10 are coplanar, ensuring the linear movement of the belt 8 between the driving wheel 7 and the driven wheel 9 and avoiding the bending or twisting of the belt during the transmission process. The linear movement not only reduces the wear of the belt but also ensures the balance during the transmission process, avoiding unnecessary power loss. The design of the coplanar axes optimizes the power transmission path, enabling the power of the motor to be transmitted from the driving wheel 7 through the belt 8 to the driven wheel 9 and the boarding ladder pulley 10 without unnecessary power loss or deviation. This design ensures the efficient utilization of power and improves the overall performance of the system. The coplanar axes contribute to the compact layout of the pulley system, saving the space inside the boarding ladder frame 14. This design enables the system to be better integrated into the vehicle structure.

[0087] Specifically, the purging system is provided with one or more purging ports 12, and the purging ports 12 are arranged on the boarding pedal 11. The design of the purging ports 12 enables the purging system to directly perform purging operations on the boarding pedal 11, effectively removing snow or accumulated water, improving the environmental adaptability and safety of the boarding ladder. The design of multiple purging ports can provide stronger purging force and a more uniform coverage range to ensure that the boarding pedal 11 is thoroughly cleaned in rainy or snowy weather.

[0088] In this embodiment, two purge ports 12 are provided. The two purge ports 12 are arranged at intervals along the length direction of the boarding pedal 11, ensuring that the main contact area of the pedal can be covered, and the accumulated water or snow on the pedal can be removed in the shortest time.

[0089] It should be further noted that the core components of the purge system include the purge port 12 and its supporting purge pipeline, as well as the power source connected thereto (usually the compressed air system of the vehicle). One end of the purge pipeline is connected to the compressed air system of the vehicle. This system usually generates compressed air by the vehicle's compressor to provide the air pressure and air flow required for purging. Starting from the power source inside the vehicle, the purge pipeline needs to go through a series of turns and extensions and finally reaches the purge port 12 located on the boarding pedal 11. In order not to affect the normal operation of other vehicle systems, the pipeline is usually laid along the internal channels of the vehicle frame and the boarding ladder frame 14, which can not only ensure the smooth air flow of the purge port 12 but also avoid the exposure of the pipeline and reduce the possibility of damage. The start and stop of the purge system are intelligently controlled by the control unit (VCU), and are automatically activated or closed according to the signals of the sunlight and rainfall sensors, without manual intervention, realizing automated and intelligent management, and improving the user experience and system operation efficiency.

[0090] Specifically, a pressure sensor 13 is provided on the boarding pedal 11. The pressure sensor 13 is arranged between the two purge ports 12. The pressure sensor 13 can monitor the pressure change on the pedal in real time. Once a passenger steps on the boarding pedal 11, the pressure sensor 13 will immediately detect the increase in weight and send this change signal to the VCU (Vehicle Control Unit). This design is used to confirm whether a passenger is using the boarding ladder, so as to start or stop the automatic adjustment process of the boarding ladder to ensure the safety of the passenger. Since the pressure sensor 13 is located between the two purge ports 12, it can also assist in the intelligent control of the purge system. When the sensor detects that there is a passenger standing on the pedal, the system can pause or delay the start of the purge program to avoid unnecessary interference to the passenger. On the contrary, when there is no passenger on the pedal and the system detects rainy or snowy weather, the signal of the pressure sensor 13 can trigger the purge program to quickly remove the slippery condition on the pedal, providing a dry and clean boarding environment for subsequent passengers and reducing the risk of slipping.

[0091] According to another aspect of the embodiment of the present invention, a vehicle is provided, including an adjustable boarding ladder, and the adjustable boarding ladder is the adjustable boarding ladder in any one of the above embodiments.

[0092] In the above embodiments of the present invention, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0093] In several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings, direct couplings, or communication connections shown or discussed with each other can be through some interfaces. The indirect couplings or communication connections of units or modules can be in electrical or other forms.

[0094] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0095] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0096] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs that can store program codes.

[0097] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A control method for an adjustable pedal ladder, characterized in that, Including: Obtain sensor signals of a preset area of an adjustable boarding ladder, where the sensor signals are used to determine whether there is a target object in the preset area of the adjustable boarding ladder; When it is determined that there is a target object in the preset area, obtain vehicle condition information in a target scenario, where the vehicle condition information includes at least one of vehicle speed and door state information; When it is determined that the vehicle condition information meets a preset condition, obtain weather type information in the target scenario, where the weather type information includes at least one of sunny day information, rainy day information, cloudy day information, and snowy day information; Based on the weather type information, generate a first control strategy set, and the first control strategy set is used to control whether a purging system performs a preset action to purge the adjustable boarding ladder.

2. The control method of the adjustable boarding ladder according to claim 1, wherein, The method includes: When it is determined that the purging system performs a purging operation, obtain a pressure signal of the adjustable boarding ladder, and generate a second control strategy set based on the pressure signal, where the second control strategy set is used to control at least part of the boarding ladder to rise or fall by a preset height.

3. The control method of the adjustable boarding ladder according to claim 2, characterized in that, Before generating the second control strategy set based on the pressure signal, it includes: When it is determined that the purging system stops operating, generate a third control strategy set, where the third control strategy set is used to control the adjustable boarding ladder to be in a working position; When it is determined that the adjustable boarding ladder is in the working position, obtain the pressure signal.

4. The control method of the adjustable boarding ladder according to any one of claims 1 to 3, characterized in that, When it is determined that the vehicle condition information meets a preset condition, obtaining the weather type information in the target scenario includes: When it is determined that the vehicle speed meets a preset vehicle speed range, obtain the door state information; When it is determined that the door state information is in a closed state, obtain the weather type information in the target scenario.

5. The control method of the adjustable boarding ladder according to claim 1, characterized in that, Generating the first control strategy set based on the weather type information includes: When it is determined that the weather type information is sunny day information or cloudy day information, generate a first control strategy and a second control strategy in the first control strategy set, where the first control strategy is used to control the purging system not to purge the adjustable boarding ladder, and the second control strategy is used to control the adjustable boarding ladder to be in a working position; When it is determined that the weather type information is rainy day information or snowy day information, a third control strategy and a fourth control strategy, where the third control strategy is used to control the purging system to perform a preset action to purge the adjustable boarding ladder, and the fourth control strategy is used to control the adjustable boarding ladder to be in the working position after the purging operation of the purging system is completed.

6. The control method of the adjustable boarding ladder according to claim 3, wherein Generating the second control strategy set based on the pressure signal includes: Judge whether the pressure signal meets a preset pressure within a preset time; If so, generate a fifth control strategy in the second control strategy set, and the fifth control strategy is used to control at least part of the boarding ladder to rise or fall by a preset height; If not, generate a sixth control strategy in the second control strategy set, and the sixth control strategy is used to control the adjustable boarding ladder to be in a storage position.

7. An adjustable boarding ladder, the adjustable boarding ladder being controlled by using the control method described in any one of claims 1 to 6, characterized in that, Including: An adjustable boarding ladder assembly, which is connected to a vehicle frame (1) on one side of the vehicle; A purging system, at least part of which is connected to the adjustable boarding ladder assembly to perform a purging operation on the adjustable boarding ladder.

8. The adjustable boarding ladder according to claim 7, characterized in that, The adjustable boarding ladder includes: An infrared sensor (5), which is arranged on the same side of the vehicle as the adjustable boarding ladder assembly, and is used to obtain sensor signals in a preset area of the adjustable boarding ladder; A sunlight and rainfall sensor, which is arranged at the front windshield of the vehicle and is used to obtain weather type information in the target scenario; A control unit, which is electrically connected to the purging system, the infrared sensor (5) and the sunlight and rainfall sensor, and can also be used to obtain vehicle working condition information in the target scenario.

9. The adjustable boarding ladder according to claim 7, wherein The adjustable boarding ladder further includes an electric strut (6), which is movably connected to the adjustable boarding ladder assembly. By controlling the electric strut (6) to move in a preset direction, the adjustable boarding ladder assembly can be switched between a working position and a storage position.

10. The adjustable boarding ladder according to claim 9, characterized in that, The adjustable boarding ladder assembly includes: A bracket assembly, which is connected to the vehicle frame (1). The bracket assembly includes a first bracket (2) and a second bracket (3), and the first bracket (2) and the second bracket (3) are arranged at intervals along the length direction of the vehicle frame (1); Two boarding ladder frames (14), each of which has an accommodating space. Each boarding ladder frame (14) is respectively connected to the first bracket (2) and the second bracket (3). The electric strut (6) is movably connected to at least one of the boarding ladder frames (14). By controlling the electric strut (6) to switch between a working position and a storage position, the boarding ladder frame (14) can be raised or lowered by a first preset height; A pulley system, which is arranged inside the accommodating space; A power device (4), one end of which is connected to the vehicle frame (1), and the other end of which is connected to the pulley system; A boarding pedal (11), both ends of which are connected to the pulley system; Wherein, by controlling the pulley system to rotate in a preset direction through the power device (4), the boarding pedal (11) is raised or lowered by a second preset height.

11. The adjustable boarding ladder according to claim 10, characterized in that, The pulley system includes a first pulley assembly and a second pulley assembly, and the first pulley assembly and the second pulley assembly are respectively connected to the boarding ladder frames (14) on both sides. At least one of the first pulley assembly and the second pulley assembly includes: A driving wheel (7), the output shaft of the power device (4) is connected to the driving wheel (7), and the driving wheel (7) is located at one end of the boarding ladder frame (14) close to the bracket assembly; The driven wheel (9), the driving wheel (7) and the driven wheel (9) are connected by a belt (8), the driven wheel (9) is located at one end of the boarding ladder frame (14) away from the bracket assembly, and the driven wheel (9) is connected to the boarding ladder frame (14); The boarding ladder pulley (10) is arranged between the driving wheel (7) and the driven wheel (9), the boarding ladder pulley (10) abuts against the belt (8), and both ends of the boarding pedal (11) are connected to the boarding ladder pulley (10).

12. The adjustable boarding ladder according to claim 10, wherein The purging system is provided with one or more purging ports (12), and the purging ports (12) are arranged on the boarding pedal (11).

13. The adjustable boarding ladder according to claim 10, characterized in that, A pressure sensor (13) is arranged on the boarding pedal (11).

14. A vehicle, comprising an adjustable boarding ladder, characterized in that, The adjustable boarding ladder is the adjustable boarding ladder according to any one of claims 7 to 13.

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