FIELD OF INVENTION
The present invention relates to field of mechatronics. Specifically the present invention relates to a system for automatic detection of passengers for gelling in and out of public transport and to prevent the accident during foot board travel. More particularly, the present invention contains ultrasonic sensor, indicating system, neodymium magnet with Hall effect sensor and accelerator locking system. The present invention occupies less space and consumes less power. It requires only simple installation procedures and less maintenance.
BACKGROUND OF THE INVENTION
A major portion of the population depends upon the public transport system especially buses for their daily commute and a large number of accidents take place almost every day. Every year a large number of passengers die due to accidents caused by footboard travelling in buses. The negligence of either driver or passenger can result in a tragedy. Many school children and elders are victim of tragedy. So by developing an intelligent system in buses the passenger safety is assured.
The Present invention is designed mainly to reduce the accidents occurring due to footboard travel. This system is developed in such a manner that it assures the safety of passengers during boarding and deboarding the public transport and also restricts the footboard travel by preventing the acceleration of the bus.
Various detector systems for accident prevention have been devised in art; some of them are as follows:
EPI508547 relates to a device for automatic detection of passengers getting in and out of public transport vehicles comprising electric pulses generating means, said means being automatically operated by passengers.

CN1360288 relates to a device for recording the passenger throughput of bus at each stop by ultrasonic detector. The device is composed of a sensor and a signal processing circuit. The said ultrasonic detector is composed of an ultrasonic transmitter and an ultrasonic receiver which is connected via A/D converter to the signal processing circuit connected to memory and card reader.
A known publication by G. Kalivarathan et al., in International Journal of Advanced Research in Biology, Ecology, Science and Technology, Volume 1, Issue 2, May 2015 discloses the intelligent footboard accident prevention system in buses wherein the said system prevents the footboard accidents in buses. The system will detect the passenger presence at the footboard using the sensor. Once the people presence is detected, bus will decelerate slowly and comes to rest. This deceleration is achieved by retarder and accelerator disengaging mechanism.
Another known publication by S. Rohit et al., in Informational technology Journal, 2013, discloses the development of footboard accidents prevention technology that allows accelerating the bus only when there are no passengers at the footboard. If people presence is detected, this will not allow the bus to accelerate.
Yet another known publication by Jayalakshmi et al., in International Journal on Recent and Innovation Trends in Computing and Communication, Volume: 3 Issue: 3 discloses a system to prevent road accidents by implementing various technologies like automatic speed control and IR array counter. This system comprises of the distance reflective sensor that can prevents accidents by controlling vehicle speed.
The present invention overcomes the inadequacies of the prior art by providing a system with sensor, indicating system and accelerator locking system. The present invention is simple to install and requires less maintenance.

OBJECT OF THE PRESENT INVENTION
One or more of the problems of the conventional prior art may be overcome by various embodiments of the present invention.
Accordingly, the primary object of the present invention is to provide a footboard accident prevention system.
Jt is one object of the present invention, wherein the said system comprises of sensors, accelerator locking system and indicating system.
It is another object of the present invention, wherein the said sensors are ultrasonic sensor and Hall effect sensor.
It is yet another object of the present invention, wherein the said accelerator locking system contains rack and pinion gears that are driven by means of arduino programmed motor.
It is even another object of the present invention, wherein the said indicating system comprises of buzzer and LED that are fixed near driver's cabin to indicate the presence of passengers standing at foot board of the vehicle.
It is one another object of the present invention, wherein the said system needs only simple installation procedures and less maintenance.
SUMMARY OF THE PRESENT INVENTION
According to the basic aspect of the present invention there is provided a footboard accident prevention system comprising atleast one arduino board, one or more sensors, atleast one accelerator locking system and atleast one indicating system.
It is one aspect of the present invention, wherein the said sensor is ultrasonic sensor.

It is one another aspect of the present invention, wherein the said sensor is Hall effect sensor.
It is yet another aspect of the present invention, wherein the accelerator locking system comprises rack and pinion gears.
It is even another aspect of the present invention, wherein the said indicating system comprises one or more LED and one or more buzzer.
It is one aspect of the present invention, wherein the said sensors are connected to arduino board.
It is one another aspect of the present invention, wherein the said indicating system is connected to sensors through arduino board.
It is another aspect of the present invention, wherein the said accelerator locking system is connected to arduino board.
It is even another aspect of the present invention, wherein the ultrasonic sensor is fixed atleast in one side of footboard steps.
It is yet another aspect of the present invention, wherein the said Hall effect sensor is affixed at steering arm of wheel of vehicle.
It is one aspect of the present invention, wherein the rack and pinion gears are driven by means of arduino programmed motor.
It is one another aspect of the present invention, wherein the said motor with rack and pinion gears is affixed adjacent to accelerator pedal.
It is even another aspect of the present invention, wherein the said indicating system is fixed at driver's cabin.
It is one aspect of the present invention, wherein the said Hall effect sensor attached on the steering arm of the wheel is in range of magnetic field produced by a serious of neodymium

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The above set forth and other features of the invention are made more apparent in the ensuring detailed description of the invention, when read in conjunction with the accompanying drawings, wherein:
Figure 1 illustrates a connecting flow chart that connects the sensors and systems with the central arduino board, according to the present invention.
DETAILED DESCRIPTION OF INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS
The preferred embodiment of the present invention will now be explained with reference to the accompanying drawings. It should be understood however that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. The following description and drawings are not to be construed as limiting the invention and numerous specific details are described to provide a thorough understanding of the present invention, as the basis for the claims and as a basis for teaching one skilled in the art how to make and/or use the invention. However in certain instances, well-known or conventional details are not described in order not to unnecessary obscure the present invention in detail.
With reference to figure 1, the present invention comprises of centrally programmed arduino board, ultra sonic sensor, Hall effect sensor, indicating system and accelerator locking system, The arduino board of the present invention, is programmed to transmit or receive signal from all the components of the said system.

One embodiment of the present invention is ultrasonic sensor. The said sensor contains a transmitter part and a receiver part and it sends ultrasonic rays from the transmitter and receives it in receiver. If any obstruction occurs in path of ultrasonic rays it generates signal pulses. The said sensor detects the human presence on footboard. The said sensor is fitted on atleast at one side of footboard steps of vehicle.
Another embodiment of the present invention is Hall effect sensor. The said sensor is a motion detector sensor, whenever there is a change in the magnetic field surrounding the sensor, an output signal is produced by the sensor. The said sensor is installed on the steering arm of the wheel and it is assured that it is in the range of magnetic field produced by a series of neodymium magnets which are attached to the inner rim of the wheel. The said sensor detects whether the bus is stationary or in motion. The said sensor is a miniature sensor and is easily attached to the steering arm of the wheel.
One another embodiment of the present invention is accelerator locking system, wherein the said locking system comprises rack and pinion gears that are driven by an arduino programmed motor. The said pinion gear is coupled with the said motor, so that when the said motor operates, the pinion is rotated and it actuates the rack. The said rack and pinion gear with motor is attached adjacent to the accelerator pedal of the vehicle thus once the rack gear moves it locks the accelerator pedal and ensures that said vehicle can't move.
One another embodiment of the present invention is indicating system, wherein the said indicating system is the combination of buzzer and LED system. The said system is fixed near driver's cabin. The said system provides indication of presence of passengers on footboard to the driver and other person in-charge.
This invention is further described through the following working mode of the said foot board accident prevention system, which is only illustrative in the nature and should not be construed to limit the scope of invention.
In one preferred working arrangement of the present invention, the components of the said
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indicating system were installed in their respective places. The said ultrasonic sensor was installed at the sides of the footboard of the vehicle. The said ultrasonic sensor used for working of present invention has capacity of sensing atleast upto 200 cm. Using the arduino program, distance of sensing of ultrasonic sensor were programmed to atleast 30 cm. Once the ultrasonic sensor's programmed range of 30 cm was disturbed or interacted by passengers, the programmed arduino board starts sending signals to the said indicating system, wherein the said indicating system comprises of buzzer and LED. The said buzzer produced alarm sound to indicate the presence of passenger on footboard and the said LED also blinked to notify the driver about the presence of passenger on footboard.
The said accelerator locking system was fixed adjacent to accelerator pedal of the vehicle. Arduino on receiving signal from sensors passed signals to motor for rotating forward and reverse direction. The said accelerator lock system comprises rack and pinion gear coupled with programmed motor.
In another preferred working arrangement of the present invention, the said Hall effect sensor was attached at the steering arm of the wheel, the said sensor senses the change in magnetic field. This magnetic flux change was produced by neodymium magnet placed in the inner rim of wheel. The distance between magnet and Hall effect sensor was maintained to be not greater than 6 cm. The magnet rotated along with wheel but Hall effect sensor was fixed with steering arm of the wheel. A series of Neodymium magnet was placed in a position such that it's South Pole facing the Hall effect sensor.
In one preferred working mode of the present invention, when the said vehicle was stationary and passengers were boarding or deboarding the vehicle, the interactions were detected by ultrasonic sensor and the signals were transmitted to indicating system by means of programmed arduino board. Then said programmed arduino would check for both outputs from ultrasonic and Hall effect sensor. When the ultrasonic sensor output was high and Hall effect sensor output was low (ie, the vehicle was at stationary), the motor rotates in forward direction to move rack gear for locking the accelerator and the said indicating system start functioning. Once the interactions

are concluded the ultrasonic sensor output is low and the motor will rotate in reverse direction to move the rack away from accelerator pedal. Thus accelerator lock is now released and buzzer as well as LED stops its indication.
In another preferred working mode of the present invention, when the vehicle was in motion the Hall effect sensor output would be high and if passengers were present on footboard, the said ultrasonic sensor output also would be high and hence only the indicator systems would work and the accelerator locking system would not function.
Advantages of the present system:
• The said system consumes less space and power.
• The said system is compatible to run atleast on 12 volts battery.
• Manufacturing modification is not required in respective vehicle.
• The said system requires simple installation procedures and less maintenance.
Although the invention has been described with 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 alternative embodiments, will be apparent to persons skilled in the art. It is therefore, contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.