Description:FIELD OF THE INVENTION

[0001] The present invention relates to a system for facilitating passengers to transit in vehicles that enhances passenger safety during boarding and alighting by automatically detecting presence of the passenger. In addition, the system also controls relevant vehicle functions to prevent accidents and ensure smooth transitions, reducing risks and providing a safer experience for all passengers getting on or off the vehicle.

BACKGROUND OF THE INVENTION

[0002] Currently several passengers face challenges while boarding vehicles, particularly for the elderly, individuals with disabilities, and wheelchair users. Several systems often involve steep or uneven steps, lack automation, and do not offer adequate support or safety features. In crowded areas or poor lighting conditions, the risk of slips, falls, and delays increases. Drivers also be unaware of passengers boarding or alighting, creating potential safety hazards. Therefore, there is a clear need for a user-friendly, and safe boarding system that support all passengers.

[0003] Several devices are currently available to assist passenger boarding, such as manual foldable ramps, mechanical lifts, and basic retractable steps. While these solutions provide basic access, they have notable drawbacks. Manual ramps require physical effort and assistance, making them inconvenient for independent use. Mechanical lifts are slow, prone to mechanical failure, and increase maintenance costs. Basic retractable steps posing safety risks during operation. Most of these systems do not integrate with vehicle controls or offer real-time monitoring, limiting their effectiveness. Additionally, they often fail to accommodate all user types, especially during emergency situations or in adverse weather conditions, highlighting the need for a reliable solution.

[0004] US11613196B2 when it is confirmed that a user exists based on an image of the situation outside a vehicle which is captured using a camera and a proximity sensor detects a fact that the user is approaching based on, for example, a putting of a hand of the user over the proximity sensor, a control device causes a ramp to be extended. As such, a user sitting in a wheelchair can cause the ramp to be extended by approaching the proximity sensor, such as the putting of the user's hand over the proximity sensor such that the user sitting in the wheelchair does not have to press an extension/storage button provided on the vehicle to cause the ramp to be extended.

[0005] US9597240B2 discloses an accessibility system for providing access into or out of a vehicle includes a pan defining a securement area. The pan includes a first end, a second end, and a support surface. A ramp assembly includes a first segment and a second segment hingedly coupled to the first segment. The ramp assembly is pivotally coupled to and deployable from the pan near the second end. A tailgate assembly is detachably secured and pivotally coupled to the pan such that during deployment of the ramp assembly, the ramp assembly is pivotable about a first axis and the tailgate assembly is pivotable about a second axis parallel to and offset from the first axis.

[0006] Conventionally, many systems are available in the market for transiting passengers in the vehicle. However, these cited inventions lack to provide comprehensive automation, real-time passenger detection, integration with vehicle controls, and features like energy harvesting, step cleaning, and secure wheelchair handling. These limitations also reduce safety, accessibility, and convenience, highlighting the need for a more advanced, reliable, and user-friendly boarding system.

[0007] In order to overcome the aforementioned drawbacks, there exists a need in the art to develop a system that requires to be capable of automatically detecting passengers, including those with wheelchairs, controlling vehicle functions to enhance safety, providing a clean and accessible boarding platform, integrating energy generation features, and enabling real-time communication with authorities to ensure secure, efficient, and user-friendly boarding and alighting experiences.

OBJECTS OF THE INVENTION

[0008] The principal object of the present invention is to overcome the disadvantages of the prior art.

[0009] An object of the present invention is to develop a system that improves the safety of passengers while boarding and alighting from the vehicle by automatically detecting their presence and controlling vehicle functions accordingly.

[0010] Another object of the present invention is to develop a system that provides an accessible and easy-to-use boarding system which accommodates passengers both with and without wheelchairs.

[0011] Another object of the present invention is to develop a system that ensures the boarding area remains clean and safe by detecting and removing dust or debris from the steps.

[0012] Yet another object of the present invention is to develop a system generate and store electrical energy from the movement occurring while boarding the vehicle to improve energy efficiency.

[0013] The foregoing and other objects, features, and advantages of the present invention will become readily apparent upon further review of the following detailed description of the preferred embodiment as illustrated in the accompanying drawings.

SUMMARY OF THE INVENTION

[0014] The present invention relates to a system for facilitating passengers to transit in vehicles that offer an accessible and user-friendly boarding solution. The system is designed to accommodate all passengers, including those with and without wheelchairs, ensuring a smooth and comfortable boarding experience.

[0015] According to an embodiment of the present invention, a system for facilitating passengers to transit in vehicles, comprises of an AI-enabled camera and a thermal sensor installed at the vehicle entrance to detect passenger presence and monitor boarding and alighting activities, a retractable stair unit comprising two side frames connected by a horizontal longitudinal member, horizontal plates forming steps, and a scissor linkage arrangement that extends to create a connected platform, and a conveyor arrangement attached via a pivot joint to one side frame of the stair unit, featuring extendable rods, rollers connected through ball and socket joints, a conveyor belt to form a flat platform for wheelchair users, and a locking assembly to secure the wheelchair during boarding, which retracts once the wheelchair passenger is onboard, the system includes an engine control unit linked to the AI-enabled camera to stop the engine while passengers are boarding or alighting, and a microcontroller connected to a server that manages the AI camera, stair unit, and conveyor for seamless boarding with or without wheelchairs.

[0016] According to another embodiment of the present invention, the system further comprises of a cleaning unit with a dust sensor, water-supplying nozzle, and wiping arrangement to maintain cleanliness of the steps. Additionally, the horizontal plates are integrated with piezoelectric elements to generate and store electrical energy. The server communicates with authorized bus authorities, sending SOS alerts with bus identification and location upon detecting suspicious persons. The stair unit is equipped with LEDs to signal approaching vehicles during operation, and the AI-enabled camera monitors incoming vehicles to trigger stair retraction. The microcontroller also alerts the driver through the vehicle dashboard, deploying the stair unit or conveyor arrangement based on passenger needs.

[0017] While the invention has been described and shown with particular reference to the preferred embodiment, it will be apparent that variations might be possible that would fall within the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:
Figure 1 illustrates an isometric view of a system for facilitating passengers to transit in vehicles; and
Figure 2 illustrates an isometric view of a conveyor arrangement associated with the system.

DETAILED DESCRIPTION OF THE INVENTION

[0019] The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims.

[0020] In any embodiment described herein, the open-ended terms "comprising," "comprises,” and the like (which are synonymous with "including," "having” and "characterized by") may be replaced by the respective partially closed phrases "consisting essentially of," consists essentially of," and the like or the respective closed phrases "consisting of," "consists of, the like.

[0021] As used herein, the singular forms “a,” “an,” and “the” designate both the singular and the plural, unless expressly stated to designate the singular only.

[0022] The present invention relates to a system for facilitating passengers to transit in vehicles that improve passenger safety during boarding and alighting by automatically detecting their presence and controlling vehicle functions. In addition, the system also keeps the boarding area clean and safe by detecting and removing dust or debris from the steps, ensuring a secure and comfortable environment for passengers at all times.

[0023] Referring to Figure 1 and 2, an isometric view of a system for facilitating passengers to transit in vehicles and an isometric view of a conveyor arrangement associated with the system are illustrated, respectively, comprising an AI enabled camera 101 attached to an entrance of the vehicle, a retractable stair unit 102 attached to the entrance, a first side frame 102a and a second side frame 102b attached to the entrance of the vehicle, plurality of horizontal plates 102c, and plurality of linkage using a scissor arrangement 102d, a conveyor arrangement 201 attached onto the side frame of the stair unit 102 through a pivot joint 103, wherein the conveyor arrangement 201 comprises plurality of extendable rods 201a, plurality of rollers 201b attached to an inner side of the extendable rod, a conveyor belt 201c operably coupled to the rollers 201b, a locking assembly 201d is attached to the sides of the conveyor belt 201c, a cleaning unit installed on the stair unit 102, comprising a nozzle 104, a wiping arrangement 105 and the stair unit 102 is integrated with the plurality of light emitting diodes 106.

[0024] The system disclosed in the present invention comprises of an AI enabled camera 101 is attached to an entrance of a vehicle to detect the presence of a passenger in proximity of the vehicle. To activate the system, the vehicle driver is required to manually presses a push button which is installed on a dashboard of the vehicle. Upon pressing the button, the circuits within the system gets close, allowing electric current to flow. The push button has an outer casing and an inner arrangement, including a spring and metal contacts. When the button is pressed, the spring-loaded assembly inside is pushes down on. In the default state, the internal contacts are apart, so the circuit is open and no electricity flows. Pressing the button makes the contacts touch each other, closing the circuit and allowing electricity to flow, which activates an inbuilt microcontroller linked with a server of the system that regulates the further options of the system.

[0025] Upon activating the system, the microcontroller activates the AI enabled camera 101 to detect the presence of the passenger. The AI enabled camera 101 comprises of an image capturing arrangement including a set of lenses that captures multiple images in vicinity of the vehicle and the captured images are stored within a memory of the AI enabled camera 101 in form of an optical data. The AI enabled camera 101 also comprises of a processor that employ computer vision and deep learning protocols, including object detection, segmentation, and edge detection, such that the processor processes the optical data and extracts the required data from the captured images. The extracted data is further converted into digital pulses and bits and are further transmitted to the microcontroller. The microcontroller processes the received data and evaluate the presence of the passenger in proximity of the vehicle.

[0026] A retractable stair unit 102 is attached to the entrance of the vehicle to facilitate on-boarding and off-boarding of the passenger. The stair unit 102 comprises of a first side frame 102a and a second side frame 102b attached to the entrance of the vehicle, having a horizontal longitudinal member in-between the frames to provide space between the first and second side frame 102a, 102b.

[0027] A plurality of horizontal plates 102c, and a plurality of linkage are installed between the first and second side frame 102a, 102b, using a scissor arrangement 102d. The horizontal plates 102c are used to provide a step in the stair unit 102. Initially the linkages are in the retracted manner, as the AI-enabled camera 101 detects that the vehicle has approached the location where the passenger will board or off board the vehicle, the microcontroller actuates the scissor arrangement 102d to extend the linkages for forming steps in the stair unit 102.

[0028] The scissor arrangement 102d comprises a series of crossed metal arms arranged in a scissor pattern connected by hinges that allow them to fold and unfold. When the scissor arrangement 102d is in its lowest position, the scissor arms are fully compressed. The hydraulic cylinders are retracted. The hydraulic pump begins to move hydraulic fluid from the reservoir to the hydraulic cylinders. The fluid enters the cylinders under high pressure, causing the pistons inside the cylinders to extend. As the hydraulic cylinders extend, they push against the scissor arms causing them to open and extend. At this point, the hydraulic fluid continues to apply pressure to keep the linkages at the desired position. The scissor arms are locked in place by the pressure from the hydraulic cylinders, which stabilizes the linkages to provide steps in the stair unit 102. The horizontal plates 102c provide a connected platform on fully extended the linkage members.

[0029] A conveyor arrangement 201 attached onto a side frame of the stair unit 102 through a pivot joint. In case, the AI enabled camera 101 detects that the passenger is wheelchair ridden, the pivot joint is actuated by the microcontroller to align the conveyor arrangement 201 with the platform to make the stair unit 102 a wheelchair friendly. The pivot joint works by allowing rotational movement around a single fixed axis, enabling conveyor arrangement 201 to rotate relative to each other like a hinge. The pivot joint consists of a pin inserted through aligned holes in two components, forming a secure connection while permitting one part to turn or pivot around the pin. This design provides controlled, limited movement, allowing the joint to support loads while enabling angular motion to the align the conveyor arrangement 201 with platform of the stair unit 102.

[0030] The conveyor arrangement 201 further comprise of a plurality of extendable rods 201a. As the conveyor arrangement 201 is aligned with the platform, the microcontroller actuates the rods 201a to extend in such manner that the rods 201a form a ramp structure over the stair unit 102. In an embodiment of the system, the extendable rods 201a are made up of an actuator that is pneumatically powered by a pneumatic unit. The pneumatic unit that includes an air compressor, air cylinder, air valves and piston which works in collaboration to aid in extension and retraction of the rods 201a. The microcontroller controls the pneumatic valves to regulate the airflow and pressure, providing smooth and precise positioning of the rods 201a.

[0031] In another embodiment of the system, the extendable rods 201a are made up of an actuator that hydraulically powered by a hydraulic unit. The hydraulic unit comprises of a hydraulic pump, a hydraulic reservoir, a hydraulic fluid, hydraulic valves, and hydraulic cylinders. The hydraulic actuator utilizes pressurized fluid supplied by the hydraulic unit to create strong linear force, which drives the extension and retraction of the rods 201a. The microcontroller controls hydraulic valves to modulate fluid flow and pressure, ensuring controlled and stable movement of the rods 201a.

[0032] Yet in an embodiment of the system, the extendable rods 201a are made up of an actuator that is electromechanically powered which convert electrical energy into precise mechanical motion. These actuators typically consist of electric motors coupled with mechanical components such as gears that drive the extension and retraction of the rods 201a.

[0033] A plurality of rollers 201b is attached to an inner side of the extendable rod and a conveyor belt 201c is arranged over the rollers 201b for providing a flat platform for the wheelchair. Upon actuation of the rods 201a, the microcontroller actuates rollers 201b to provide required motion to the conveyor belt 201c for translating the wheelchair ridden passenger into the vehicle. The roller operates by using an electric motor to drive the rollers 201b, which rotates around its axis to provide motion to the conveyor belt 201c. The motor's rotational energy is transmitted to the roller through a gear assembly. The movement is controlled by the microcontroller that manages the motor's speed and direction, allowing precise adjustments.

[0034] A ball and socket joint are integrated with each of the rollers 201b to provide multi-directional movement to the roller for maintaining desired orientation of the rollers 201b. The motorized ball and socket joint allows for smooth, adjustable movement of the rollers 201b in various directions. The joint herein, has a ball-shaped part that fits into a cup-like socket. A motor controls this ball, making the ball to move around inside the socket. Actuators adjust the ball’s position to ensure that the ball moves accurately and flexibly, enabling accurate and controlled positioning of the rollers 201b in multiple directions.

[0035] A locking assembly 201d is attached to the sides of the conveyor belts. Before translating the wheelchair to the vehicle, the AI enabled camera 101 detect the presence of the wheelchair on the conveyor belt 201c. As the presence of the wheelchair on the conveyor belt 201c is confirmed, the microcontroller actuates the locking assembly 201d for securing the wheelchair on the flat platform.

[0036] In an embodiment of the system, the locking assembly 201d comprises of a latch arranged installed on the conveyor belt 201c. The latch arrangement consists of a spring-loaded catch that engages with a corresponding hook. As the wheelchair is accommodated over the conveyor belt 201c, the latch locks into place, preventing unintended movement of the wheelchair during transition of the wheelchair. To release, an electronic actuator disengages the latch, allowing retraction of the latch.

[0037] In another embodiment of the system, the locking assembly 201d may comprise of a C-shaped clamp having a first electromagnet attached to the free end of the clamp is installed on the conveyor belt 201c via a hinge joint. A second electromagnet is attached underneath the conveyor belt 201c. As the wheelchair is accommodated on the conveyor belt 201c, the microcontroller actuates the hinge joint to provide angular movement to the clamp to secure the rear wheels of the wheelchair. Upon actuation of the hinge joint the microcontroller actuates the first and second electromagnet to secure the clamp in position in order to eliminate the unwanted movement of the wheelchair during transition.

[0038] During the translation of the wheelchair to the vehicle, the AI enabled camera 101 continuously monitor the translation operation. Once the AI enabled camera 101 confirms that the wheelchair is on boarded, the microcontroller re-actuates the rods 201a to retract the conveyor belt 201c.

[0039] An engine control unit of the vehicle is operably coupled with the AI-enabled camera 101 to sense the on-boarding and off-boarding of the passenger. In case, the AI enabled camera 101 detects that the passenger is in transition, the microcontroller signals the engine control unit to stop the engine. Once the transition of the passenger is confirmed by the AI enabled camera 101, the microcontroller signals the engine control unit to turn on the engine.

[0040] A thermal sensor is embedded within the conveyor arrangement 201. During the transition of the passenger, the microcontroller activates the thermal sensor to detect the suspicious object with the luggage. The thermal sensor detects the presence of suspicious object with the passenger by identifying temperature differences and heat signatures of objects. When passenger passes through the thermal sensor, the thermal sensor captures infrared radiation emitted by all items inside. The metallic objects, often have different thermal properties compared to clothes or other common belongings they retain or conduct heat differently. These anomalies appear as distinct shapes or temperature patterns on the thermal image. In case, any suspicious object is detected by the thermal sensor, the microcontroller sends an SOS to the authorized bus authority along with an identification of bus number and location.

[0041] The cleaning unit is installed with the horizontal plates 102c of the stair unit 102. The cleaning unit comprises of a dust sensor installed on the stair unit 102 to detect dust onto the horizontal plates 102c. The dust sensors use an optical method for detecting dust particles on the stair unit 102. The dust sensor consists of a light source that illuminates the stair unit 102. When dust particles are present in the over the stair unit 102, the light is scattered. The photodetector in the dust sensor measures the amount of scattered light. The amount of scattered light correlates with the number of particles and their sizes. The dust sensor processes this signal to determine the concentration of particles on the stair unit 102.

[0042] A nozzle 104 integrated with a chamber that is associated with the cleaning unit. As the dust sensor detects the presence of dust on the stair unit 102, the microcontroller actuates the nozzle 104 to dispense water from the chamber over the stair unit 102. The electronic nozzle 104 comprises of a gate and a magnetic coil which uses electricity from microcontroller to generate the force to control the opening/closing of gate to control the flow of the water through a small aperture of the nozzle 104, allowing for precise control of the flow of the water on the stair unit 102.

[0043] A wiping arrangement 105 is attached to the stair unit 102. The wiping arrangement 105 comprises of a robotic arm with a micro-fiber cloth as an end effector of the robotic arm. Upon dispensing the water over the stair unit 102, the microcontroller actuates the robotic arm to wipe the water and clean the stair unit 102. The robotic arm consists of linked segments connected by joints, which are powered by motors to enable movement in all directions. The rotary joints of the arm enable rotational motion around a fixed axis, while prismatic joints allow for linear, sliding movement to the micro-fiber cloth for cleaning the stair unit 102.

[0044] The AI enabled camera 101 is configured to detect the approaching vehicles from behind. In case, the AI enabled camera 101 detect any approaching vehicles, the microcontroller activates a plurality of light emitting diodes 106 to signal an approaching vehicle if the stair unit 102 is in operating condition. The light emitting diodes 106 are made from semiconductor materials which have properties that allow them to emit light. The light emitting diode contains a p-n junction, where a p-type region is positively charged and an n-type region is negatively charged. When voltage is applied, electrons from the n-region move towards the p-region, and holes from the p-region move towards the n-region. As the electrons move across the p-n junction, they recombine with the holes. During this process, the electrons lose energy, and this energy is released in the form of photons (light).

[0045] The AI enabled camera 101 detects that the passenger is with or without the wheelchair, the microcontroller linked to the server is operably connected to the AI-enabled camera 101, and a dashboard of the vehicle to alert the driver. The alert includes to deploy the stair unit 102, and/or conveyor arrangement 201 based on the presence of the passenger is with or without the wheelchair.

[0046] A piezoelectric disk, a piezoelectric strip and/or combination is integrated with the horizontal plates 102c to generate electrical energy and store into an energy storage unit. The piezoelectric disk, a piezoelectric strip and/or combination generates electricity through the piezoelectric effect, where certain materials produce an electric charge in response to mechanical stress due to the transition of the passengers. When pressure or vibration is applied to the disk, the internal structure of the piezoelectric material becomes polarized, causing positive and negative charges to accumulate on opposite surfaces. Electrodes attached to the disk collect this charge, generating a voltage across the terminals. The amount of electricity produced depends on the force and frequency of the applied stress. The generated electricity is then stored in the energy storage unit for further use.

[0047] The energy storage unit works by capturing and storing electrical energy for later use, ensuring a stable and reliable power supply. The energy storage unit typically includes a storage medium such as batteries, capacitors, or supercapacitors, which store energy chemically or electrostatically. When energy is available often from sources like piezoelectric disk, a piezoelectric strip and/or combination it is converted and stored in the energy storage unit. When needed, the stored energy is released and converted back into electrical power to supply to the systems.

[0048] The present invention, works best in the following manner, where the AI-enabled camera 101 attached at the entrance of the vehicle that detects the presence and condition of the approaching passenger, whether with or without the wheelchair. Upon detection, the AI-enabled camera 101 communicates with the microcontroller linked to the server, which processes the input and activates the stair unit 102 or the conveyor arrangement 201 accordingly. The stair unit 102, comprising the first side frame 102a, second side frame 102b, horizontal longitudinal member, plurality of horizontal plates 102c, and scissor-arranged linkage members, extends to form the stable platform for onboarding and off-boarding. In case, the wheelchair passenger is detected, the conveyor arrangement 201 pivoted to the side frame is deployed, where the plurality of extendable rods 201a and rollers 201b, with the conveyor belt 201c, form the flat platform; the locking assembly 201d secures the wheelchair during transit. The engine control unit receives input from the AI-enabled camera 101 and halts engine operation during passenger transition for safety. The horizontal plates 102c integrated with piezoelectric disks or strips generate electrical energy during use, stored in the energy storage unit. The dust sensor mounted on the stair unit 102 detects debris, triggering the nozzle 104 and wiping arrangement 105 to clean the horizontal plates 102c. Additionally, the system sends the SOS with vehicle ID and location to authorized bus authorities upon detecting the suspicious person. Light-emitting diodes 106 signal the stair unit’s operation status to nearby vehicles, while the AI-enabled camera 101 also detects approaching vehicles, prompting the microcontroller to retract the stair unit 102 to prevent collision. The microcontroller also sends alerts to the vehicle dashboard, enabling the driver to take action as needed.

[0049] Although the field of the invention has been described herein with limited reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternate embodiments of the invention, will become apparent to persons skilled in the art upon reference to the description of the invention.
, Claims:1) A system for facilitating passengers to transit in vehicles, comprises:

i) an AI enabled camera 101 attached to an entrance of the vehicle;
ii) a thermal sensor installed on the entrance;
iii) a retractable stair unit 102 attached to the entrance to facilitate on-boarding and off-boarding of the passenger, wherein the stair unit 102 includes
a. a first side frame 102a and a second side frame 102b attached to the entrance of the vehicle, having a horizontal longitudinal member in-between to space apart the first and second side frame 102a, 102b,
b. plurality of horizontal plates 102c, and plurality of linkage using a scissor arrangement 102d, wherein, the horizontal plates 102c are used to provide a step in the stair unit 102,
c. the horizontal plates 102c provide a connected platform on fully extended the linkage members;
iv) a conveyor arrangement 201 attached onto a side frame of the stair unit 102 through a pivot joint to align the conveyor arrangement 201 on the platform to make the stair unit 102 a wheelchair friendly, wherein the conveyor unit comprises:
a. plurality of extendable rods 201a,
b. plurality of rollers 201b, wherein the roller is attached to an inner side of the extendable rod through a ball and socket joint,
c. a conveyor belt 201c operably coupled to the rollers 201b for providing a flat platform for the wheelchair,
d. a locking assembly 201d is attached to the sides of the conveyor belt 201c to lock the wheelchair onto the flat platform,
e. the conveyor belt 201c is retracted back to the vehicle once the wheelchair passenger is on boarded;
v) an engine control unit operably coupled with the AI-enabled camera 101 to sense the on-boarding and off-boarding of the passenger, wherein the engine control unit stops engine, if the passenger is in transition; and
vi) a microcontroller linked to a server is operably connected to the AI-enabled camera 101, the stair unit 102, and the conveyor arrangement 201 to facilitate boarding and off boarding to the passenger with or without the wheelchair.

2) The system as claimed in claim 1, wherein a horizontal plate 102c is attached to a cleaning unit, wherein the cleaning unit, comprises:
i) a dust sensor installed on the stair unit 102 to detect dust onto the horizontal plates 102c;
ii) a nozzle 104 attached to the stair unit 102 to supply water for washing the horizontal plates 102c, and operably connected to the dust sensor; and
iii) a wiping arrangement 105 attached to the stair unit 102, and operably connected toe dust sensor for wiping dust and water on the horizontal plates 102c.

3) The system as claimed in claim 1 and 2, wherein the horizontal plate 102c is integrated with a piezoelectric disk, a piezoelectric strip, and/or combination thereof to generate electrical energy and store into an energy storage unit.

4) The system as claimed in claim 1, wherein, the server is accessible to an authorized bus authorities and sends an SOS to the authorized bus authority along with an identification of bus number and location, if the suspicious person is detected.

5) The system as claimed in claim 1, wherein the stair unit 102 is integrated with the plurality of light emitting diodes 106 to signal an approaching vehicle if the stair unit 102 is in operating condition.

6) The system as claimed in claim 1, wherein the AI enabled camera 101 monitors an approaching vehicle towards the stair unit 102, and the microcontroller retracts the stair unit 102.

7) The system as claimed in claim 1, wherein the microcontroller linked to the server is operably connected to the AI-enabled camera 101, and a dashboard of the vehicle to alert the driver if said camera 101 detects that the passenger is with or without the wheelchair.

8) The system as claimed in claim 7, wherein the alert includes to deploy the stair unit 102, and/or conveyor arrangement 201 based on the presence of the passenger is with or without the wheelchair.