Prototype of an Assistive Transport Parking System for Hospital Joshua B. Dela Masa, Ricky Joe P. Ennangen, Joshua C. Gawlik, Lendin F. Manisim, John Carlo O. Malla, and Luke S. Tejedo University of the Cordilleras, Senior High School ABSTRACT The purpose of this study is to fulfill the capability of an assistive transport parking system for hospital. Parking system has long been issue in hospital, the development of the electromechanical system in the society will solve the problem by designing and implementing automated parking system for hospital. The paper discusses the ciruit diagram of the prototype that consisting of electronic materials divided into two sections known as input and output circuit, the input circuit consist of Infrared sensor (IR sensor), exit buttons and Radio Frequency Identification (RFID) that is capable enough to quickly respond to arduino. Output circuit is consist of Liquid Crystal Display (LCD) Module, LED, Driver cricuit and linear actuator that serves as the indicator of the prototype and capable enough to operate the mechanism accurately depending to the sensistivity of the IR sensors. The mechanism of the prototype have the design to accommodate twelve vehicles in the same time. Keywords: Medical assist, Arduino Mega, Valet parking system, Hospital INTRODUCTION Parking spaces are very important in society especially to the hospital. A hospital must have enough parking space to accommodate their patients and their visitors. The common problem is the lack of parking space in hospital and inconvenient parking system, It may increase the risk of the patient who have to rush to hospital wasting their time looking for parking space while patients condition deteriorates. The convenience and safety of the patient may be the problem in parking system of the hospital (Keefe, n.d. ). The researchers prompted to resolve the issue regarding the lack of parking space and medical facilities in the hospitals. Providing more parking spaces is one of the solutions for that problem, using automated mechanism will help the patient to less their time and effort going to the exact floor of their respective agenda in the hospital. Through the increasing rate of private car usage most particular in urban or in the cities that is mainly caused by fast growing economy and population, policies, modernization and subsidies are the main reason that make the car parking one of the main concern for transport and traffic management all over the world. According to Young et al. (1991), car parking is an issue of significance both at local as well as at strategic level of planning. It is one of the main concerns while planning and designing any infrastructure project. If ignored, it contributes towards traffic congestion and violations, accidents and injuries, wastage of time and money as well. One of the earlier researches on parking shows that the parking problem arises mainly due to people want to park exactly in front of the door of their destination. Parking is beneficial if the parking lot is separated from the hospital for the convenience of the visitor, patient and other staff of the hospital. The hospital produced congestion due to lack of parking space and busy times of visiting hours (Astarlift,2016). Parking management system in hospital is important because it carry the first and last impression of the patient and visitor that gives impact to their satisfaction to the hospital. There are cases that there are many lives that in risk because of the blockage of the road going to the emergency and hard to find vacant parking space in the hospital (Harvey, 2015). Figure 1. Walkway of the patient going to the hospital In a study by Caluorianti (2017), to run the hospital efficiently, the patients, staff and visitors needs to access easily into the hospital. Parking problems like delayed or missed treatment, time wasted because of waiting or searching for parking space, loss of productivity and income of the hospital, risking the lives of patients, creating anxiety and stress among patients, staff and visitors, Declining patients satisfaction and the hospitals reputation may occur. Lagerlogistik (2016) also stated that hospital parking leads to major problems for both the hospitals and the patients. These problems may include the delays of providing care for the patients, the time being consumed due to the blockage of the road reduces productivity. In the society right now, parking management is one of the big problems in the hospital it means that people needs to develop a modernize parking system. Extreme number of vehicles will be expected to increase while limited parking space will still remain that may leads to congestion. The reason why parking development is still unsolved is because of lack of knowledge in terms of public demand as a basis for parking system (Ali & Hassan, 2019). According to the study of Harvey (2020) In the Europe country the parking facility of the hospital is one of the factors that affect profitability, satisfaction of patients and visitors. In the study of Designa (n.d.) every hospital is in need to have convenient parking spaces for sick patient and elderly with compromised mobility and have accessible spots close to entrance. According to the Department of Health (2004) A hospital and other health establishment must Have a parking space for every twenty-five beds. One of the goal of the researchers is to solve the problem of the hospital in terms of parking. According to Calouri (2016), hospitals and other medical centers are struggling to manage the increasing demands of the service. Automated parking system is more efficient for the hospitals and medical centers to fully use the land available. This can also double-up the parking spaces by making a multi-story car park facility. With the help of the automated parking system, this will help to secure the vehicles and will be easier for people to access the parking spaces. The System will help people with disabilities (PWD) or any who needs medical care such as those in a stretcher to lessen their time and effort going to the specific floor of the hospital. It may further improve the safety and provide better convenience for the patients. The structural and functional design of the prototype can improve the convenience and comfort of the patients to further accommodate all types of facilities and usage of the hospital itself. Research Objectives/Statement of the Problem This study aims to test the capability of an assistive transport parking system for hospital and specifically aims to determine the following: 1. How capable is the sensor of actuator in terms of determining the distance of the vehicle to the sensor installed unto the elevator? 2. Once the power of the prototype was interupted, will the data in the system be erase? 3. How efficient will the RFID be in terms of detecting the vehicle? MATERIALS AND METHODS I. Method and design This study used experimental method to test the capability of the prototype and to test its efficiency during the process. The design was fully equipped with sensors that are capable of determining the vehicles chosen floor. It is composed of a new structural and architectural design with innovative mechanism that will lift the vehicle in their desired floor. Every single part of the prototype was manipulated by a microcontroller present in the arduino. The functionality of the entire building and some components was automatically controlled by the arduino programmed in the computer. II. Preparation of materials The prototype was designed to accommodate ten cars per floor and ply wood was used to build the multilevel floors. In the design prototype the area of the parking area is: Parking lot Length Width Height 16.51 cm 8.90 cm 9.90 cm Vehicle 10.15 cm 6. 35cm 4 cm The floor of the prototype is designed to accommodate ten different kinds of vehicle except the massive one. The runway of the vehicle is located in the middle of the two blocks to manage the traffic flow of the vehicle going up and down. The arrow will be the guideline of the driver to move to the parking slot. The right lane on the runway is for` the vehicle that is entering the parking slot and the vehicle who wants to exit for the left lane. To count the vehicle that is occupied per level, it is sensed by the infrared sensor to determine if there is available parking slot in that floor. Figure 2 shows the proposed parking layout design that demonstrates the flow of the parking system. The dimension of the length of the whole parking system per level is 17. 5 inch and 15 inch for its width. Figure 4. Implementation of the system and overall diagram. Figure 2. Layout of parking system In the parking lot, there are cases that the car is not parked properly. The researchers used Infrared sensor (IR sensor) to detect the vehicle if it is park properly or not and the IR sensor will detect the presence of the vehicle automatically. The program of the prototye is when the IR sensor detects the vehicle it will automatically turn the lights on, it means the vehicle is already parked properly in the specific parking lot. Based on the study of Natarajan (2018) There are three different types of parked vehicle which consist of correctly parked, illegally parked and properly parked vehicle which can disturb the mechanism. In the overall circuit diagram showed in figure 5 , all the electronic materials is powered by two power supply with a 12v. The circuit is divided into two sections known as input and output circuit. The input circuit is consist of IR sensor, exit buttons and Radio Frequency Identification (RFID). The vehicle can go down by using the exit button located at the right side of the exit way. When the driver scan the RFID card to the RFID reader it will automatically lift up the actuator to its desired floor, It will work if the IR sensor detects the vehicle in the actuator. This three input circuit is connected to the microcontroller going to the output circuit. Output circuit is consist of Liquid Crystal Display (LCD) Module, LED, Driver cricuit and linear actuator. The LCD module will display the exact number of all vacant parking slot in the prototype. The LED will serve as a guide for the driver to know where is the available parking slot. Lastly, The actuator will carry the vehicle going to its desired floor safely. A. List of minor parts for the prototype mechanism: Figure 3. Operational parking of vehicles III. Electronic Components Minor parts for prototype mechanism are 6A power Switch 510 ohm it is used to interrupt or cut the flow of electron or to simply stop the electricity. 1/4w resistor used to reduce current flow, adjust signal level, bias active element and divide voltage. 5V Buzzer used as alarm device, timer, and confirmation 15x9 Matrix PCB Male Pin Header used to take current or signal transmission. Female Pin Header is where male pin inserted that is mainly used for extension. Speaker wire by meter is basically used for electrical connection. 3-wire cable usually used as a ground wire and typically not a conductor. Male-Female Connectors is a connector attached to a wire cable having one or more recessed holes Wires for PCB connections used to join subsections of circuits together. A. List of major parts for the prototype mechanism Microcontroller is one of the main parts of the arduino, located in the side of the system or most particularly found inside the Arduino that serve as the main controller of the main device. Arduino mega serves as the main brain of the system and mechanism that can be programmed using a computer. This type of Arduino can accommodate the mechanism of the parking system. DC-to-DC converter is an electronic circuit or electromechanical device that converts voltages whether from lower to higher or vice versa. Light Emitting Diode (LED) driver circuit is an electrical circuit used to rectify or to correct higher voltages, alternating to low voltage and used to protect LED from fluctuations. LED is an electric light used in the prototype that serves as the signal whether the parking area is available or occupied. Liquid crystal display is an electronic display module which uses liquid crystal to produce an image about the functionality and used as indicator of the device. linear actuator is an actuator that creates motion in a straight line, in contrast to the circular motion of a conventional electric motor. In the same way, its function is to lift the car and locate it in its designated area. Infrared sensor is used to sense the car whether it is in proper position before proceeding to its area. Exit buttons is used to request an elevator to the exact floor of the button. Radio frequency identification (RFID) reader and card is use to identify, locate and track an object or vehicle using radio frequency signal. Data Gathering The prototype is tested in full operation to know if it is work properly and accordingly. Figure 5. Operational circuit Testing the IR sensors in determining the distance of the vehicle to the sensor In determining the capability of the sensor to the specific distance, the researchers test the sensor three times to get the average distance of the vehicle to the sensor. IR sensor are capable enough to detect the heat being emitted by the vehicle and detecting bright object. In the figure 5, It shows that there are sixteen IR sensor that are connected to the microcontroller. The researchers get the highest distance of the sensor to the vehicle resulting to 5.5 cm represent by the lifter or linear actuator and for the lowest distance, the researchers got 3.1 cm located in the third slot of the second floor of the prototype. All IR sensor are capable to send and receive data from the arduino. Testing the LCD display when the power of the prototype was interupted The LCD show the available parking slot at the second, third and fourth floor. The display show all the vacant lots in the building. The researchers test to interrupt the LCD by plugging out the power source and out of ten trial there is one percent of error that interrupt the LCD. The researchers test two 12V power supply to simultaneously plug out the device resulting to completely lockdown of the system and when the power is return the actuator was go back to its original position. Testing the mechanism to move upward and the efficiency of the RFID The system is tested to lift up the elevator/actuator by scanning the card of the RFID located at the first floor of the prototype and the system will wait until the vehicle enters the elevator. Then, the elevator moves up according to the floor number that correspond to the card scanned and after the elevator reach it’s floor destination the vehicle was manually moved to its desired parking slot and the green LED light will served as indication that there are available parking space. After the vehicle parked, the sensor detects the vehicle and the process was delayed 1.20 seconds because the data will transmit to the arduino going to the LCD screen to indicate the data presented in the sensors. The researchers test the efficiency of the RFID by calculating its time detecting the RFID card that is programmed in different floors. There are also a card that represent the error card. The researchers gathered three trials for the RFID efficiency to get the average speed of the RFID in terms of detecting the card. Testing the mechanism to move downward After the vehicle exits the parking slot, the vehicle was manually move to the exit area and the driver was press the exit button located at the floor where the vehicle at. Then, the elevator was go to that floor and the vehicle will enter the elevator until the IR sensor detects the vehicle. The elevator was automatically move to the First floor and the system willl wait until user exits the elevator. Results and Discussion Distance of vehicle from sensor An infrared sensor emits radiation of the infrared in order to sense its surroundings. This infrared signal bounces from the surface of an object and the signal is received at the infrared receiver. In the prototype the researchers used infrared sensor because of its features and it is applicable for this application. Table shows the distance of the vehicle from the sensor. are a high chance to sense the vehicle in far distance because of the light emitted in the area. Figure 6. Time of elevator travelled per floors The IR sensor can affect the speed of the actuator in different level. When the IR sensor detects the vehicle, the lifter was automatically lift up on its designated floor. The time of the actuator lift to the 2nd floor is 3.01 seconds and for the 3rd floor is 9.90 seconds and lastly for the 4rth floor is 9.61 seconds. It means that the sensor and actuator has the ability to transmit and receive data effectively. The System could malfunction if any of the wirings on the Arduino Mega are misplaced and the IR sensor is so sensitive in terms of detecting a metal that can cause damage the entire mechanism. Data in the system when the power is interrupted Will the LCD Display vanish? Does the sensor interact with the LED light? Will the actuator automatically move when it sense a vehicle or push button pressed? 1st NO 2nd NO 3rd NO YES YES YES YES YES YES Table 2. Data in the system when the power source is disconnected Table 1. Distance of the car from the IR sensor The sensor can reach the farthest distance of 5.6 cm which represent by the lifter while 3.1 cm is the nearest, It is located in the slot 1 of second floor. It has a varied distance due to some factors that affecting the sensor such as location, position, and brightness in where some sensor located higher than the others. The researchers got different result because when the IR sensor is located at the dark side of the prototype the capability of the sensor to sense the vehicle is too low and when the IR sensor is located in the lifter, there Any of the question from the table proved that the data in the system will not erased in time the power source gets interrupted. In addition the whole mechanism will stop, until the current is fixed. This interruption may have been caused by electricity loss or some wiring failures. When the current gets back, the whole design will reset or go back to its original state position. It will now work properly as usual like nothing happen. In all Arduino there’s a mechanism built that deals for monitoring this kind of real time event in the power source. Its main job is to make sure that the processor respond quickly to important event when certain signal detected, Its interrupts whatever the processor is doing and execute some code designed to react to the problem of the Arduino. Once the code has wrapped up, the processor goes back to whatever it was originally doing as if nothing happened (Reilly, 2015). Once the power source gets interrupted the whole mechanism was able to stop, until the current is restored. This interruption maybe caused by current loss or some wiring failures. When the current is restored, the whole design was reset or back to its original position. It was now work properly in its original transition. If ever the power source of the building was interrupted, the whole building would be unusable since the only way for a vehicle to go up is through the actuator. Actuator is responsible for the vehicles to go to its designated floor. The power source can also damage the mechanism because of the electricity transmitting to the arduino spreading to the different parts of the mechanism. Efficiency of RFID First trial Second trial Third trial First trial .23s .24s .28s Second trial .30s .29s .27s Third trial .25s .23s .26s AVERAGE .26s .25s .27s Table 3. Time before the RFID reader detects the RFID card From table 3, it shows that the average time it take for the RFID to detect the vehicle is .26s therefore that given time is too fast. Thus, it is efficient enough. But sometimes the application will be largely dependent on the type of tag itself. Conversely some other tag offer long ranges that can read, other can hold or store more data or are easier to manufacture thus, it is less costly. Some factors that can affect the efficiency were the data obtained from RFID can eliminate inaccuracies in data due to human error or absence of data. Data that is usable from the RFID data stream to ensure appropriate data processing and effective data mining at an economic storage cost. Sabbaghi & Vaidyanathan (2008) claimed that RFID is evolving in application and its impact on effectiveness; one can see broader efficiency and operational improvements over traditional processes, methods, and technologies. Figure 7: RFID diagram A RFID system is made up of two parts: a tag or label and a reader. In order to function, the two common parts should be connected to the micro controller to be able to transmit data. The tag or label is embedded with a transmitter and a receiver. From figure 7, it shows how RFID works. After the tag or label is tapped in the RFID reader it automatically sense, gather data and send it to the arduino. Once the parking building is full it cannot accommodate anymore costumers, The RFID is consist of six access card and two denied card. Recommendation If somebody will create an prototype, make it more automative and the first thing to secure is the equipment especially the sensitive ones like the sensors and RFID. Secondly, is the Arduino Mega, the reason why the Arduino mega needs to be secured is because it is the main brain system of the prototype. Without this equipment, the prototype won’t be working. Thirdly, programming. Programming is prominent to this research and to the prototype. Lastly, more parking space in the prototype should be employ to accommodate all types of vehicle and have a fixed power supply to generate the mechanism. Conclusion The researcher gathered data in every sensor if it is working properly and if capable enough to determine an object or most particularly, the vehicle interacted with the actuator. When the power of the building is vanished or is being interrupted, the processor responds quickly to important event when certain signal is detected by the interrupt present in the Arduino, whatever the process is doing, it resumes the interruption, fixed and started to function if nothing happen. The main mechanism resets and goes to its original position. Lastly, the Radio Frequency Identification (RFID) is efficient in terms of receiving and sending data to the Arduino. REFERENCES QuANz459f, A. (2018, july 27). How Does My Car’s Parking Sensor Work? Retrieved from https://www.quanzautocare.com/parking-sensor/ Ali, A. R., & Hassan, S. A. (2019). Review of Malaysian current practice in supply/demand of parking in the hospital. IOP Conference Series: Materials Science and Engineering, 512, 012057. doi: 10.1088/1757-899x/512/1/012057 Sabeth, M. (2017,March 3). How Car Parking Problems in the Hospitals can be Easily Solved? Retrieved from https://meddium.com/@peterjones_55191/howcar-parking-problems-in-the-hospitals-can-beeasily-solved-b7a4cf37c823. Abdul A. & Sitti H. (2019). Review of Malaysian current practice in supply/demand of parking in the hospital. The High Cost of Hospital Parking (2018, January 20). Retrieved from https://canadianparking.ca/thehigh-cost-of-hospital-parking/ Calouri. (2016). Planning for better hospital parking. Retrieved from: http://blog.skylineparking.com/2016/12/planning-for-better-hospitalparking.html Vadan, P. (2015, December). Development of an automated multi-level car parking system. doi;10.1109/APWCCSE.2015.7476222 Caluorianti Spam, L. (2017, January 2). Planning for Better Hospital Parking. Retrieved from https://www.parking-net.com/parkingnews/skyline-parking-ag/hospital-parking-1 Creacom. (n.d.). Astarlifts, an elevator for every need. Retrieved from http://www.astarlifts.com/en/bloglifts/lifts-lifts/elevator-for-every-need. APPENDIX A The Creation of structural part of the prototype I. Creating the platforms base and foundation of the prototype which is made out of ply wood and 2 by 2 wood. Keefe, J. (n.d.). Information source for professionals in the parking industry. Retrieved from https://www.parking-net.com/ Lagerlogistik. (2016). Hospital parking. Retrieved from: https://skyline-parking.com/apsapplications/hospital-parking Measurement Sensor (n.d.). Retrieved from https://www.sciencedirect.com/topics/engineering/ measurement-sensor. Nagesh, A. (2017). Some selfish idiot parked in an ambulance bay outside A&E. Retrieved from: https://www.google.com/amp/s/metro.co.uk/2017/ 01/25/some-selfish-idiot-parked-in-an-ambulancebay-outside-ae-6405143/amp/ Nash, R. ( 2015).Using interupts in arduino Retrieved from https://www.allaboutcircuits.com/technicalarticles/using-interrupts-on-arduino/ II. Creating all the fifteen parts of the prototype that was connect to the main foundation. III. Attaching the plywood into the foundation using pliers and securinng it with a wood screw. IV. Measuring the height of the first 4 floors to be precised for the actuator and assemble it. The researchers explain the purpose of the prototype and the functionality of the materials to be programmed to the computer. II. After the components being programmed, the researchers test all of the components. V. Installing all the plywood around the foundation and for the detachable floors. The Creation of prototype electronic component of the I. We buy the materials in layad circuit located at lower session, Baguio City. III. The researchers learned the input and output circuit of the system. IV. The electronic component is place and connected to the structure of the prototype. V. Lastly, the researchers gathered all data from the procedure of the mechanism.