System implementation, testing and validation report for Automated
Contents
1. Diskette s a CD ROM I Source disk folder PC or network Download from the Internet Comments The installation files are uploaded onto the Arduino board using a USB cable connected to the PC where the source code is Installed files e Arduino files e HEX files 5Installation Procedure Check Topics Installation procedure Date Initials Authorization Person responsible AINEBYONA ANXIOUS MAWEJJE MICHAEL MUMO MERCY KITAMIRIKE JOSEPH 33 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Installation test Tested and approved in a test environment Tested and approved in actual environment Completely tested according to test plan E Partly tested known extent of update Comments 6System Acceptance test Topics System acceptance test Date Initials Test environment The actual operating environment site test A true copy of the actual environment Iv External environment supplier factory test m Comments 04 04 2015 34 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Test performance Installation and version 04 04 2015 Startup and shutdown Selected or critical requirements iv Selected inputs Selected outputs x Iv Selected functionality Performance vs user instructions Comments User level test Tested on operator user level 04 04 2015 lw Tested on supe2. gt Introduction of a mobile application control using a smart phone A provision for the wheel chair user to call the care taker in light of an emergence 37 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 7 7 Chapter 7 Conclusion and Recommendations By the subsequent signatures it becomes evident that all validation activities are documented and approved 38 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 8 Appendix A User Manual USER S MANUAL version 1 0 FOR AUTOMATED WHEELCHAIR SOFTWARE version 1 0 Prepared by BSE15 46 May 3 2015 39 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Copyright information c Copyright 2013 BSE15 46 Group The information contained herein is subject to change without notice The only warranties for BSE15 46 Products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be construed as constituting an additional warranty BSE15 46 shall not be liable for any damage contained herein Document BSE15 46 UM2 0 Revision 2 0 JUNE 2015 Revision Sheet S8Revision Sheet Release No Revision Description 01 05 2015 User s Manual Created 40 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT INTRODUCTION This appliance is not intended for use by persons including children with reduced sensory or mental capabilities A person who lacks experience and knowledge of use has to be g
3. able to move to their preferred direction after pressing the right button on the keypad to move to that direction The system should be able to provide the user with feedback messages regarding the state of user actions The system displays the temperature reading of the patient s body temperature The system will be efficient and easy to understand since it displays directions for use The system will be easy to learn for novice users b Data through put After receiving the instructions from the keypad the system processes the instructions and gives a corresponding output Its throughput is 0 01 micro second 2 1 5 Hardware control This section includes all device interfaces and equipment used and how they are used in the system The equipment and hardware in the system include the following Liquid Crystal Display This hardware is used to display instructions feedback to the user Wheelchair This is a chair mounted on large wheels for the transportation or use of a sick or disabled person Keypad It is used by the user to control their movement by selecting the direction they want to move in The DC motor is employed to help in the linear motion of the wheelchair This motor is controlled by the microcontroller Arduino development board which is part of the Micro controller unit controls the system It processes the information passed to it by the LCD and uses it to instruct the motors on their dir
4. keypad The LCD also outputs simple instructions to aid the user on how to use the automatic wheelchair This is to be achieved using a programmed microcontroller 1 2 Overview of the document This document describes the implementation testing and validation findings for the Automated Wheelchair It is divided into the following sections Section 1 0 0 This section gives an overview of the document It also has a detailed background review and scope of the system that explain what the system does 8 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Section 2 0 0 Testing and validation findings The testing and validation findings for the system are given in a format that further describes them by giving the following sub sections Sub section 2 1 0 Requirements acceptance test specification This subsection gives the requirements and system acceptance test showing what the system does and the objective criteria on how the computer system should be tested to ensure that the requirements are fulfilled and that the computer system performs as required in the environment in which it will be used Sub section 2 1 1 Version of requirements This subsection gives the current version of the requirements and the changes made to the requirements from the first version Sub section 2 1 2 Inputs This subsection gives a detailed view of the all the inputs of the system Sub section 2 1 3 Outputs This subsection gives a detailed descript
5. teniri REO A SERERE TCU TEUER SEA E EES EEE DRE E E EA Qus 34 TPerformance and maintenance details a pea seite ches aee Bos i teecc etat d butdgeei tcs orbus tucda ngos ue 37 SRevision Sheets erorii et olei etui aded setis Ue ep iut Ld pose dee uoto eo Lebe da ENSE ESAS 40 AUTOMATED WHEEL CHAIR REPORT 1 Introduction 1 1 0 Background and scope of the project 1 1 1 Background Wheelchair bound patients mostly people with lower limb impairments and of a sound mind in many countries like Uganda are dependent on aides For their movement they have to pay the aides who are not readily available They struggle to get through places using their hand powered conventional wheelchairs Even the manual control of the wheel chairs requires them to expend a lot of effort on movement Although automated wheelchairs are available they are tough to operate and are power consuming It is in this accord that we intend to develop an automated wheel chair Our proposed system will enable an economic assembly in any existing wheelchair that enables an automated motion using a keypad that is mounted on the wheelchair The user controls their movement by entering instructions using the keypad 1 1 2 Scope The automated wheelchair is an embedded system designed with an electronically programmed engineered smart interface of a keypad controlling its Movements It also has an LCD screen displaying direction of movements as instructed from the
6. the description of all the installed components that require validation Sub section 5 1 4 Installation qualification This section has steps to ensure and document that each component is installed correctly Section 6 Performance Service maintenance and phase out This section contains descriptions of Performance servicing maintenance and phase out stages In this phase the computer system is in use and subject to the requirements for service maintenance performance and support This phase is where all activities during performance reside and where decisions about changes upgrades revalidation and phase out are made Sub section 6 1 1 Service maintenance This section describes the documentation of service and support concerning maintenance future updates problems solutions and any requested modification Sub section 6 1 2 Performance maintenance This section describes the requirements of service and performance maintenance It describes time taken before giving output support to be given to clients the changes anticipated and the cause of the changes and how to move from an old system to a new system 12 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Section 7 Conclusion and recommendations This section summarizes the whole project and makes remarks and highlights several issues about the project Section 8 User manual This section contains the user manual for the system which gives details on how the system ca
7. will exhibit operatin noise due to aging This warranty is exclusive and in lieu of any other warranties whatsoever nd the sole remedy for violations of any warranty shall be limited to repair or replacement of the defective product pursuant to the terms contained Herein Application of any implied warranty shall not extend beyond the duration of the express warranty provided herein BSE 15 46 shall not be liable for any consequential or incidental damages 2 Safety The safety section contains important information for the safe operation and use of this product 2 1 General Guidelines WARNING DO NOT use this product or any available optional equipment without first completely reading and understanding these instructions and any additional instructional material such as owner s manuals supplied with this product If you are unable to understand the warnings cautions or instructions contact a healthcare professional dealer or technical personnel before attempting to use this equipment otherwise injury or damage may occur Procedures other than those described in this manual must be performed by a qualified technician 44 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT ACCESSORIES WARNINGS BSE 15 46 products are specifically designed and manufactured for use in conjunction with the approved accessories Accessories designed by other manufacturers and not approved by BSE 15 46 have not been tested by BSE 15 46 and are not reco
8. EEL CHAIR REPORT 3 Design output Implementation coding and compilation a The development tools used to implement the system include The development tools used to implement the system include gt Arduino IDE was used for coding FritzingBeta was used for drawing the circuit diagrams and schematics Proteus was used for simulating b Modules and integration details The motor module This module explains how the motors interact with the system components to satisfy the user s requirements This is composed of the servo motor linked to the shaft and provides direction to the wheelchair basing on the command given by the user gt The keypad and LCD module This module is programmed to provide navigation instructions in form of commands from the user This acts as an interface between the system and the user The keypad contains buttons that are programmed with specific direction commands which the user can select The LCD provides a display screen which displays different commands as selected by the user TheLCD module This module will display different directional commands and will also notify the user in case the wheelchair battery gets low gt A microcontroller The Arduino development board is the heart of the automated wheelchair The microcontroller is responsible for processing information from sensors and setting on an 23 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT alarm in case of any abn
9. Special requirements a Change control and back up of records The system version will change with new requirements or improvement of the system functionality All relevant documentation including the different versions of requirement specification document design document and all other project documentation shall be revised and reviewed periodically by the development team and stakeholders The Project manager shall keep the records b Protection of code The code is embedded in the system and it s not accessible to the user The user can only interact with the system through the keypad and only to issue instructions on the direction of movement c Precautions gt The automated wheelchair system will be able to start on verification of the user s instructions gt The wheelchair remains stationary unless someone issues a command using the keypad Other precautions to be taken are listed in the manual section 20 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT d Risks in case of errors in the system In case the user issues many instructions at once an error will occur causing the wheelchair to stop at once In case of errors in the system the system will remain in a stale state forcing the user to restart the system 2 1 13 Validation report The system has been tested a number of times for functionality and it works efficiently as intended The Tests carried out on the system and standard development processes
10. System implementation testing and validation report for Automated Wheelchair Document 001 No AINEBYONA ANXIOUS Prepared by MAWEJJE MICHEAL MUMO MERCY MUMBUA KITAMIRIKE JOSEPH Date 24 April 2015 Version 1 0 Document Approval AUTOMATED WHEEL CHAIR REPORT Name Role Date Signature 1 AINEBYONA Developer designer documenter system ANXIOUS analyst quality analyst 2 MAWEJJE Developer documenter test system MICHAEL analysts engineer designer Po MUMU MERCY Developer architectural designer test eee engineer system analyst quality analysts documenter 4 KITAMIRIKE JOSEPH Developer test engineer Documenter project manager quality analyst documenter quality engineer Validation Client GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT AUTOMATED WHEEL CHAIR By Group 15 46 Embedded Project DEPARTMENT OF networks SCHOOL OF COMPUTING AND INFORMATICS TECHNOLOGY A Project report Submitted to the School of Computing and Informatics Technology For the Study Leading to a Project in Partial Fulfillment of the Requirements for the Award of the Degree of Bachelor of Science in Software Engineering Of Makerere University Supervisor Mrs Ruth Mbabazi Mutebi Department of Networks School of Computing and Informatics Technology Makerere University rmbabazi Q cis mak ac ug 256 41 540628 Fax 256 41 540620 iii GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT May 2015 Dec
11. Wheelchairs that are used by incontinent users and or are frequently exposed to water may require replacement of electrical components more frequently DO NOT over tighten hardware attaching to the frame This could cause damage to the frame tubing Basic safety precautions to be followed when using the Wheelchair Safety and Handling of the wheelchair requires the close attention of the wheelchair user as well as the assistant 1 Read all instructions 2 Close supervision is necessary when the appliance is used by or near children 3 DO NOT leave the power button On when entering or exiting your wheelchair 4 DO NOT go UP or DOWN ramps or traverse slopes greater than 9 5 NEVER leave an unoccupied wheelchair unattended on an incline 6 DO NOT attempt to move up or down an incline with water ice or oil film 7 DO determine and establish your particular safety limits by practicing bending reaching and transferring activities in the presence of a qualified healthcare professional before attempting active use of the wheelchair 8 DO NOT attempt to reach objects if you have to move forward in your seat 9 ALWAYS shift your weight in the direction you are turning DO NOT shift your weight in the opposite direction of the turn Shifting your weight in the opposite direction of the turn may cause the inside drive wheel to lose traction and the wheelchair to tip over 10 ALWAYS keep hands and fingers clear of moving parts to avoid in
12. al environment for testing the system Thus the system was tested in its actual operating environment EV3 KIT Was used to test the whole system 3 3 Documentation The software design document is the design output of this section It specifies how the system components are designed and configured to work together This software design document describes the architecture and system design of the automated wheelchair with a patient monitoring system This document will be used by people with different skill sets like the project manager system analyst end users system designer programmers and for the system developers the document is to guide them through the design process of the project 25 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 2Design details Topics Design output Good programming Source code is Source code contains practice xus Modulized Revision notes r2 E W Encapsulated iv Comments m Iv Functionally divided F Meaningful names a Iv Strictly compiled Readable source code Fail safe handling errors Printable source code Dynamic testing All statements have been executed at least once All functions have been executed at least once All case segments have been executed at least once All loops have been executed to their boundaries Some parts were not subject to dynamic test Iv Comments 26 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 4 Inspection and testing 4 1 Introduc
13. ction FORWARD iL Press forward button to move in front BACKWARD JL Press backward button to move backwards LEFT a Press the button on your left to move to the left RIGHT Press the button on your Right to move to the left STOP CO Press the stop button and the wheelchair will stop 52 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 53 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Final approval for use Identification Responsible for validation Remarks Date Signature 54 GROUP 15 46
14. ection of movement 17 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Battery This 12V DC battery is used to power up the system Jumper cables are also used in the system for providing connectivity between the different hardware components This connectivity is used for transfer of data or supply of power Rectifier diode is also included in the system It is responsible for prevention of back flow of power to the other hardware components The system also has resistors The 1000 ohm resistor is used to reduce the power supplied by the Arduino to the LCD and keypad The circuit board is also part of the system This is the board on which the circuit is built H bridge is also part of the system It receives power from the battery and distributes the power to the different components in the system e g the Dc motors Gears They are for movement When the micro controller rotates they also rotate thus making the wheels to rotate and enabling movement 2 1 6 Limitations and safety gt Limitations The system has several limitations to its operation Without any of the conditions below it does not function properly The battery has to be in good working conditions or the system to run efficiently with minimal error The system can only be used by a person with a sound mind The automated wheelchair system will be able to start on verification of the user s instructions The system is not able to detect any obs
15. equently it should be confirmed what was done what was the result and if the result was approved 4 3 1 Test objectives gt gt gt Finding defects which came up during development To test for compatibility of the different components of the system Gaining confidence in and providing information about the level of quality of the system To prevent surprise defects later defects in the system To ensure that the finished product met the user requirements To ensure that the automated wheel chair satisfies the system requirements specifications 28 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT gt To create confidence among the users of the wheel chair by creating the impression that it is safe since it was tested Each single hardware component was tested to make sure its functioning well The software was tested using proteus and loaded onto an E V3 kit which we used to test the system 4 3 2 Relevancy of tests Below is the relevance of the tests we carried gt These tests were required to point out the defects and errors that were made during software development gt To ensure development of a secure system to prevent accidents which can be very catastrophic gt It s creates satisfaction among the users of the automated wheel chair gt It is very important to ensure the development of a quality product which is up to the user expectations gt To provide a reliable efficient and secure sys
16. ered for the future system versions The default settings for the system are not accessible to the user and can never be changed for this first version To reset the system in case the settings dis function one may just need to restart it 2 1 9 Version control The versions of the computer system are differentiated by addition of functionality or changes made to initial existing functions features in relation to the initial requirements of the system with the most priority The output from the old versions will be a bit different from the output from earlier versions in the way it is presented The versions of the system are identified by use of the standard version control numbering Versions 1 0 is the initial version and minor adjustments like bug removal adds onto the version a 19 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 0 01 making it version 1 1 1 1 1 2 and so on but adding functionality implies adding onto the version a 0 1 implying the next version will be 1 2 0 For example in version 1 0 The user was using a smart phone to control the movement of the wheelchair In version 1 1 Bluetooth technology was used to link the smart phone with the micro controller However in version 1 3 0 the user uses a keypad to control the movement of the wheelchair 2 1 10 Dedicated platform The system runs on a wheel chair made up of an aircraft aluminium structure rubber wheels motors that run the wheels and gears 2 1 11
17. formance a ce eiat sade sided u E E od a iai 28 4 3 Anomalous conditions sin nn a e aon E AE E E epa s cdi a 30 4 4 Precautionary steps LACIE cscs eite dcbet e RA 31 5 Installation and system acceptance teslis oco teer etna teo as cuca scaducedadanteelacnenedontcs tenes 32 Sil nsns E P EE 32 5 2 SUpplementary flesz m e EE A E E AEA E E EERE it 32 5 3 Installed components ai asee E aD E NEE EA EEES Ue EE 32 5 4 Installation qualtHealOn as 2s onn us pda a e uas 32 6 Performance servicing maintenance and phase out sss 37 Gol Performance and maintenance uie eee etate eset e creep occi ease pet e tonat dd sepius cns 37 7 7 Chapter 7 Conclusion and Recommendations eese 38 8 Appendix A User Manual ente eset sertis REOR ERE A TAE GE QUIS da uS RA e SUR ia 39 7 1 8 2 Table 9 Operation Instructions ss 550i sciatic jdaeas tmd n esed to rente eoe ea seasaseadastdecapacans 52 vi GROUP 15 46 IRequirements Documents V CISIODS aee utess aba re ER iustbo poi aM dp stpfess taba siiis 15 VISTA Eh CEN EN cad Sule dant a evs ee arvana da cae nasa ene ee sm gh sede NE 26 SINS PECHOMN plam amd performante 255 o aereo usi ser NORD totsDUE taney acct aus acne uaie TE DE es ieee eres 27 4Checklist of the Installation and system acceptance test sessesseeseeeeeeeeeenen nennen 32 SInstallation Procedure Check in iain edu iocis ist atis tas d Ob e poe UN meena 33 6System Acceptance testense
18. include certain painted or otherwise treated wood surfaces DO NOT traverse down ramps at high speed Doing so will reduce traction and increase stopping distance e ALWAYS traverse down ramps at a reduced constant speed to maintain stability and to avoid hard braking or sudden stops e The end user s weight can materially affect traction on sloped surfaces Great care should be taken when traversing such slopes e ALWAYS reduce speed when traveling up or down an incline or over obstacles and rough terrain Traveling under these conditions may shift the users weight forward resulting in reduced stability To assure stability and proper operation of your wheelchair you must at all times maintain proper balance Your wheelchair has been designed to remain upright and stable during normal daily activities as long as you DO NOT move beyond the center of gravity DO NOT lean forward out of the wheelchair any further than the length of the armrests WHEELCHAIR OPERATION Components 50 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT E The Print Circuit Board This is used to hold the Arduino board A LCD It is used for displaying the instructions to the user F Jumper cables are used to connect the different components together C MOTOR Rotation of the gears D Battery for powering the wheel chair 51 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 7 1 8 2 Table 9 Operation Instructions Movement A
19. ion of all system outputs Sub section 2 1 4 Functionality This subsection gives a detailed view of the functionality of the system Sub section 2 1 5 Hardware control This subsection lists and explains the purpose of all the hardware used in the system Sub section 2 1 6 Limitations This subsection lists the limitation of the system once it s deployed Sub section 2 1 7 Safety This subsection illustrates the safety of the system how secure the system is Sub section 2 1 8 Default settings This subsection gives the default settings when the system is powered on 9 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Sub section 2 1 9 Version control This subsection gives the current version of the system and the changes that have been made to the original version Sub section 2 1 10 Dedicated platform This describes the hardware and software environment in which the system will run on Sub section 2 1 11 Special Requirements This subsection spells out requirements the development team is committed to Sub section 2 1 12 Installation This subsection shows the requirements for installation of the system the validation report and the working environment of the system Sub section 2 1 13 Validation report This section has additional documentation stating that the computer system has been validated to the extent required for its application Sub section 2 1 14 Service Maintenance This section has the documen
20. ion of requirements and Version Control The requirements document version control procedure used in the project is numbering the documents from 1 1 This is the first approved version then making minor changes like formatting and diagrams clarity which are represented using the additions of 0 1 to each previous version for example 1 0 1 1 1 2 The major changes are the ones that make the meaning of the document different The system to be developed changes when they are changed or adjusted changing the meaning These are mostly requirements and diagrams for the system 14 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT The table below shows the requirements changes implying only the major changes to the documents will be considered one may need to refer to the versions of the listed requirements documents in the table The current final Requirements Specification Document version is 2 0 1 Requirements Documents Versions Version Requirement Description Author propose Date ID change d by 1 0 All First document BSE15 46 28 10 2014 made 1 1 Formatting Made diagrams Supervisor s 17 11 2014 document and text BSE15 46 formatting clear 2 0 Removal of change and Supervisor s 20 2 2015 Cucine rat BSE 15 46 requirements conflicting requirements 2 2 1 Input The system has the following input requirements as extracted from the requirements specification document gt Input 1 The u
21. iven supervision or instruction concerning use of the appliance by a person responsible for their safety Children should be supervised to ensure that they do not play with the appliance General Symbols Warning gt gt gt gt Signal words used in this manual and apply to hazards or unsafe practices which Could result in personal injury or property damage See the information below for definitions of the signal words DANGER Danger indicates an imminently hazardous situation which if not avoided Will result in death or serious injury WARNING Warning indicates a potentially hazardous situation which if not Avoided could result in death or serious injury CAUTION Caution indicates a potentially hazardous situation which if not avoided may result in property damage or minor injury or both 41 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT IMPORTANT Indicates a hazardous situation that could result in damage to property if it is not avoided Gives useful tips recommendations and information for efficient trouble free use Global Limited Warranty PLEASE NOTE THE WARRANTY BELOW HAS BEEN DRAFTED TO COMPLY WITH FEDERAL LAW APPLICABLE TO PRODUCTS This warranty is extended only to the original purchaser who purchases this product when new and unused from BSE 15 46 This warranty is not extended to any other person or entity and is not transferable or assignable to any subsequent purchaser
22. jury 11 ALWAYS check foam grips for looseness before using the wheelchair If loose contact a qualified technician for instructions 48 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 12 DO NOT attempt to stop a moving wheelchair with the wheel locks Wheel locks are not brakes 13 DO NOT engage or disengage the motor locks until the power is in the off position Not allowed Not allowed DO NOT attempt to reach objects if you have to move forward in the seat or pick them up from the floor by reaching down between your knees Proper positioning is essential for your safety Improper positioning while leaning or bending could cause the wheelchair to tip forward A Note to Wheelchair Assistants When assistance to the wheelchair user is required remember to use good body mechanics Keep your back straight and bend your knees whenever tilting wheelchair or traversing curbs or other impediments 49 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Also be aware of detachable parts such as arms or leg rests These must NEVER be used to move the wheelchair or as lifting supports as they may be inadvertently released resulting in possible injury to the user and or assistant s When learning a new assistance technique have an experienced assistant help you before attempting it alone Stability and balance e DO NOT use on inclines greater than 9 e DO NOT use on inclines with wet slippery icy or oily surfaces This may
23. laration We SE 15 46 do hereby declare that this Project Report is original and has not been published and or submitted for any other degree award to any other University before Names Registration Number Signature 1 Ainebyona Anxious 11 U 9234 PS 2 Mawejje Michael 11 U 16221 EVE 3 Mumo Mercy Mumbua 11 K 2512 PS 4 Kitamirike Joseph 11 U 9085 PS lb EE GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Approval This Project Report has been submitted for Examination with the approval of the following supervisor IUBE 2s ch ares Mec wee eae ee ieee e sr i e UM EE LEE DE o e aditdimataiiecte islet deu repeti pee eens Mrs Ruth Mbabazi Mutebi Lecturer Department of Networks School of Computing and Informatics Technology GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Contents I CHMPOCUCH ON se tee basco c 8 2 Testing and validation findings nire eret HERR RE SS IN IN SER OE ES RN NEN Eee EVERTI Reed 14 SM Pup 23 3 1 Implementation coding and compilation eeesseeeeeeeeeeeeenneeennne 23 3 2 Utilities for validation and testing eoe ett grece e Pa CIUS ote aes du vae asi tne e d INO 25 3 9 Doc mentatl on so es Doe anc ate Pte cas cabs tasa e eae Desa sty co iege Seems 25 4 nspeotron and Peste sucede DS QU ali wing d da ic vo Scie was aaa cede cU dom qan 27 29 Ecos 27 42 Test plan and per
24. mmended for use with BSE 15 46 Products DO NOT connect any medical devices such as ventilators life support machines etc directly to the batteries used to power the wheelchair This could cause unexpected failure of the device and the wheelchair NOTICE The information contained in this document is subject to change without Notice Check all parts for shipping damage and test before using In case of damage DO NOT use Contact BSE 15 46 Carrier for further instruction Operation Information Setup WARNING A qualified technician must perform the initial set up of this wheelchair Also a qualified technician must perform all procedures in the service manual Performance adjustments should only be made by professionals of the healthcare field or persons fully conversant with this process and the driver s capabilities Incorrect settings could cause injury to the driver bystanders damage to the wheelchair and to surrounding property 45 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT After the wheelchair has been set up adjusted check to make sure that the wheelchair performs to the specifications entered during the set up procedure If the wheelchair does not perform to specifications turn the wheelchair Off Immediately WARNING Stairways and Escalators DO NOT attempt to move an occupied powered wheelchair between floors using a stairway Use an elevator to move an occupied power wheelchair between floors If
25. moving a power wheelchair between floors by means of a stairway the occupant MUST be removed and transported independently of the power wheelchair Extreme caution is advised when it is necessary to move an unoccupied power wheelchair up or down the stairs BSE 15 46recommends using two assistants and making thorough preparations Make sure to use ONLY secure non detachable parts for hand hold supports DO NOT use an escalator to move a wheelchair between floors Serious bodily injury may occur DO NOT attempt to lift the wheelchair by any removable detachable parts Lifting by means of any removable detachable parts of a wheelchair may result in injury to the user or damage to the wheelchair Use proper lifting techniques to avoid injury Follow this procedure for moving the wheelchair between floors when an elevator is NOT available When using a stairway to move the wheelchair and any accessories move all wheelchair components away from the stairway prior to reassembly remove the occupant from the wheelchair 46 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 3 Bend your knees and keep your back straight 4 Using non removable non detachable parts of the wheelchair lift the wheelchair off of the ground and transfer the wheelchair up or down the stairs 5 The wheelchair should not be lowered until the last stair has been negotiated and the wheelchair has been carried away from the stairway Repair or Service Info
26. n be used and where to go for help on using the system 13 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 2 Testing and validation findings This section contains documentation of the system validation activities The sections includes information about the tasks performed methods used criteria for acceptance input and output required for each task during testing and validation required documentation the persons that are responsible for the validation and information relevant for the validation process 2 1 Requirements acceptance test specification The system will provide an automated approach to the users by controlling the movements of their wheelchairs using the keypad that is mounted on the wheelchair The user presses a button on the keypad that shall give a command instructing the wheelchair to react according to the given command The system has an LCD user interface on the wheelchair The LCD outputs simple instructions that assist the user to know how to use the system The LCD also shows the direction of movement or the state of the system The LCD displays the respective command as instructed by the user that s to say if a user presses the stop button the system will display stop on the LCD screen and the wheelchair will automatically stop The LCD also outputs the temperature and breathing Rate of the patient The automated wheelchair is designed to be efficiently used within the patient s premises 2 1 1 Vers
27. ns and a Processing based integrated development environment H bridge It receives the power from the source and distributes it to other components The Jumper cables are used to connect the different components together Print Control Board This is used to hold the Arduino board d Operating environment The automated wheelchair will be used on a flat surface If moving on an inclined area then the angle of inclination should not go above 9 else the chair will tip backwards This could cause an 24 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT accident and injure the user The wheelchair can t also be used in a slimy surface because it could slide and end up injuring someone The wheelchair cannot be used on a stairway but it can be used on a lift 3 2 Utilities for validation and testing The utilities implemented to assist in validation testing and specification of the test environment are Proteus this was used for simulation of the system LED a prototype was later developed after simulation by using the LEDs which would light after the micro processor received inputs from the keypad The LEDS were representing the automated wheelchair The Red LED indicated that there was a wrong input from the keypad The green LED showed he inputs were correct Wheelchair this was used as the environment on which our system was finally tested in order to prove that the system works on the real world It provides a re
28. or owner e Coverage under this warranty will end upon any such subsequent sale or other transfer of title to any other person This warranty gives you specific legal rights and you may also have other legal rights which vary from state to state e BSE 15 46 warrants the base frame to be free from defects in materials and workmanship for a period of five 5 years from the date of purchase from BSE 15 46 with a copy of the seller s invoice required for coverage under this warranty e BSE 15 46 warrants all electronics and electrical components excluding batteries motor and gearboxes to be free from defects in materials and workmanship for a period of one 1 year from the date of purchase from BSE 15 46 or a dealer with a copy of the seller s invoice required for coverage under this warranty e BSE 15 46 warrants all remaining components excluding all upholstered materials padded materials tires and wheels to be free from defects in materials and workmanship for a period of one 1 year from the date of purchase from BSE15 46 or a dealer with a copy of the seller s invoice required for coverage under this warranty 42 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT If within the warranty periods any such product component shall be proven to be defective the product component shall be repaired or replaced by BSE 15 46 This warranty does not include any labor or shipping charges incurred in replacement part installation
29. or repair of any such product BSE 15 46 sole obligation and your exclusive remedy under this warranty shall be limited to such repair and or replacement For warranty service please contact the dealer from whom you purchased your BSE 15 46 product If you do not receive satisfactory warranty service please write directly BSE 15 46 to the address on the bottom of the back cover Provide dealer s name address date of purchase indicate nature of the defect and if the product is serialized indicate the serial number Do not return products to our factory without our prior consent LIMITATIONS AND EXCLUSIONS The foregoing warranty shall not apply to 1 Serial numbered products if the serial number has been removed or tampered with 2 Products subject to negligence accident and improper operation 3 Products with improper maintenance or storage 4 Commercial or institutional use 5 Products modified without BSE 15 46 express written consent including but not limited to modification through the use of unauthorized parts or attachments 6 Products damaged by Reason of repairs made to any component without the specific consent of BSE 15 46 7 Problems arising from normal wear and tear or failure to adhere to the products instructions 43 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 8 A change in operating Noise particularly relative to motors does not constitute a failure or defect and will not be repaired All devices
30. ormalities The microcontroller is also responsible for processing navigation commands form the user and control the working of the servo and DC motor in sync with the issued commands c Devices and equipment i il ii iv vi vii viii Liquid Crystal Display It is used to display instructions feedback to the user Wheelchair This is a chair mounted on large wheels for the transportation or use of a sick or disabled person Keypad It is used by the user to give instructions that control their movement by selecting the direction they want to move in The DC motor It is employed to help in the linear motion of the wheelchair This motor is in turn controlled by the microcontroller The type of motor generally employed is DC motors with higher RPM torque and the one which can withstand higher capacity weight Any motor with higher performance can be used for this purpose Arduino Arduino is an open source single board microcontroller descendant of the open source Wiring platform designed projects more accessible The hardware consists of a simple open hardware design for the Arduino board with an Atmel AVR processor and on board input output support The software consists of a standard programming language compiler and the boot loader that runs on the board Arduino hardware is programmed using a Wiring based language syntax and libraries similar to C with some slight simplifications and modificatio
31. r user level r m Tested on system administrator level m Tested on overall system manager level Iv Education and training documented System user manuals available Comments 35 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Result of testing Testing approved Iv Comments 04 04 2015 36 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 6 Performance servicing maintenance and phase out 6 1 Performance and maintenance In this phase the computer system is in use and subject to the requirements for service maintenance performance and support This phase is where all activities during performance reside and where decisions about changes upgrades revalidation and phase out are made 7Performance and maintenance details Topics Performance and maintenance Date Initials Problem solution Problem 27 04 2015 The user may not be able to identify which button on the key pad performs a particular action Solution The LCD will be able to display directions for use Functional expansion and The following is the list of the suggestions and 27 04 2015 performance requests that can improve the performance of improvement the computer system This list can be expanded further in the newer versions of the system gt The LCD will be able to display the battery life and warn the user when the battery is low gt We hope to include a patient monitoring system
32. rmation WARNING Wheelchair users DO NOT service or operate this equipment without first reading and understanding 1 The owner s operator and maintenance manual If you are unable to understand the warnings cautions and instructions contact BSE 15 46 technical support before attempting to service or operate this equipment otherwise injury or damage may result Dealers and qualified technicians DO NOT service or operate this equipment without first reading and understanding the operator and maintenance manual if you are unable to understand the warnings cautions and instructions contact BSE 1546technical support before attempting to service or operate this equipment otherwise injury or damage may result Set up of the Electronics Control Unit is to be performed only by a qualified technician The final adjustments of the controller may affect other activities of the wheelchair Damage to the equipment could occur if improperly set up or adjusted Except for programming DO NOT service or adjust the wheelchair while occupied unless otherwise noted 47 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Before adjusting repairing or servicing the wheelchair ALWAYS turn the wheelchair power off otherwise injury or damage may occur Wheelchairs should be examined during maintenance for signs of corrosion water exposure incontinence etc Electrical components damaged by corrosion should be replaced immediately
33. ser presses the forward button as indicated by the user manual This enables the wheelchair to move forward Input 2 The user presses the backward button on the keypad as indicated by the user manual This enables the wheelchair to move in the backward direction 15 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT gt Input 3 The user presses the left button on the keypad as indicated by the user manual This enables the wheelchair to move in the left direction Input 4 The user presses the right button on the keypad as indicated by the user manual This enables the wheelchair to move in the right direction gt Input5 The user presses the stop button on the keypad as indicated by the user manual This enables the wheelchair to stop moving immediately 2 2 2 Output The system gives the following output after getting all the necessary input and in the right formats o Output 1 LCD instructions on how to operate the wheelchair The LCD will provide the user with simple instructions on how to operate the system E g o Press to move to the right o Press to move to the left L o Press to move forward o Press to move backwards o Press to stop 16 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 2 1 4 Functionality a Performance 1 5 6 The system provides simple instructions on the LCD to enable the user to control the wheelchair to move to any direction of their choice The user should be
34. tacles a head The system will not be able to control the wheelchair movement in a slope and oily slimy place due to gravity and friction force The system cannot be used on stair ways but can be used on lifts 18 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Safety To ensure the safety of the system the following precautions are taken into account gt gt gt The wheelchair remains stationary unless someone issues a command using the keypad The system has been well developed with code well commented and segmented grouped logically with good indentation to prevent programmer related errors Good programming practices have been followed to prevent flows in the coding structure The architectural design and labeling of the keypad is user friendly The buttons are large with clear labeling to minimize user confusion The LCD display is clear and the font used is big enough for easy reading of the instructions The automated wheelchair system will be able to start on verification of the user s instructions A user manual that has listed all the precautions to be taken for safety measures 2 1 8 Default settings gt The default settings of the system are that on power up the system will displays simple user instructions to aid the user on how to use the system on the LCD The system shall by default use English language for the first time it is installed though language customizations are to be consid
35. tation of how the system will be serviced and maintained the future updates problem solutions and requested modifications Sub section 2 1 15 Errors and alarms This subsection gives the possible errors and alarms of the system Section 3 Design Output This section gives the full description of the System design and implementation process which is relevant when developing new systems and handling changes subjected to existing systems The output from this life cycle phase is a program approved and accepted for the subsequent inspection and testing phase 10 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Sub section 3 1 1 Implementation coding and compilation This describes the development tools used in developing the system the operating environment of the system devices and equipment used in the system modules in the system and anticipated anomalies of the system Sub section 3 1 2 Utilities for validating the system This gives the utilities used to validate the system Sub section 3 1 3 Inactive code This subsection describes inactive code in the system and its intended use in the future Sub section 3 1 4 Documentation This section describes any documents provided in the design their purpose and intended users Section 4 Inspection and Testing This section gives the System inspection and testing plan and documentation of the test plan It also contains the requirements compliance with the testing the acceptance
36. tem gt Testing was required for an effective performance of the system 4 3 3 Scope of tests All the system functionality was tested including forward and backward movements left and right movements and the stop function 4 3 4 Levels of tests The following levels of tests were performed during the development of the automated wheel chair Module testing this involves testing different modules independently and respectively to ensure proper functioning of each module 29 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Integration testing this involves testing two or more modules together to ensure compatibility of the different modules System acceptance testing this involves testing of the whole system Here we tested whole automated wheel chair The testing levels include Modules tested gt Power source gt Forward movement function Backward movement function Leftturn function Right turn function Stop function LCD Integration tests Start and forward movement function Start and backward movement function Start and turn left function Start and turn right function Forward movement and stop Vv Vv V VY V WV Backward movement and stop 4 3 Anomalous conditions There are several anomalies that could happen during the use of this system and these include among others The battery might run low during use of the wheel chair The user may also not know the func
37. test specification the approach complexity risks and the intended and expected use of the computer system Sub section 4 1 1 Test plan and performance This subsection identifies all the elements that are to be tested the expected results of testing how the testing is carried out importance of tests to the system the scope and level of the tests carried out and the different types of tests along with their expected results Sub section 4 2 1 Anomalous conditions This section details any anomalous conditions that may occur when the system operates in a ae party environment Sub section 4 2 2 Precautions steps This section lists the precaution steps taken to work around undesired operating conditions 11 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Section 5 Installation and system acceptance tests It details the validation of the installation process to ensure all system elements are properly installed in the host system and that the user obtains a safe and complete installation It also includes the precautions of using the third party software environment such as MicrosoftO Windows Sub section 5 1 1 Input files This section lists all relevant files on the installation media and what they are used for Sub section 5 1 2 Supplementary files This section gives any files that must be read during installation and any license agreements of the system Sub section 5 1 3 Installed components This section contains
38. tion The inspection and testing of the automated wheel chair is planned and documented in a test plan The extent of the testing is in compliance with the requirements the system acceptance test specification the approach complexity risks and the intended and expected use of the computer system 3Inspection plan and performance Topics 3 3 1 Inspection plan and performance Date Initials Design output Program coding structure and source code 28 03 2015 Evidence of good programming practice v Design verification and documented reviews Iv Change control reviews and reports r Comments Documentation System documentation flow charts etc 28 03 2015 iw Test results User manuals On line help Notes etc 4 Contents of user manuals approved Comments 27 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Software Data integrity 28 03 2015 development Ea File storage environment Access rights D Code protection Installation kit replication and distribution Comments Topics 3 3 1 Inspection plan and performance Date Initials Result of inspection Inspection approved 28 03 2015 Iv Comments 4 2 Test plan and performance The test plan is created during the development or reverse engineering phase and identify all elements that are about to be tested The test plan should explicitly describe what to test what to expect and how to do the testing Subs
39. tions of the different buttons on the keypad 30 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 4 4 Precautionary steps taken We used a rechargeable battery so the used should ensure that the battery is periodically charged to avoid inconveniences Directions for use will be displayed on the LCD screen 31 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT 5 Installation and system acceptance test The validation of the installation process ensures that all system elements are properly installed in the host system and that the user obtains a safe and complete installation especially when installing software products 5 1 Input files Arduino file This input file is the main file that is uploaded onto the Arduino board 5 2 Supplementary files User manual that will guide the users on how to operate the system 5 3 Installed components Arduino development board which hosts the microprocessor and all the other embedded parts It is verified to see if it can send instructions to all components LCD screen that will show directions for use 5 4 Installation qualification 4Checklist of the Installation and system acceptance test Topics Installation summary Installation method r Automatic installation kit located on the installation media Iv Manual Copy amp Paste from the installation media Comments Topics Installation summary 32 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT Installation media
40. used to develop it prove its validation 2 2 3 Service and maintenance For proper system maintenance and servicing the following precautions have to be taken The battery has to be replaced regularly This has to be done every 3 months The future updates to the system include the following The system shall have a patient monitoring system that will have temperature sensors and airflow sensor to measure the temperatures and breathing rates of the user In case the readings are above normal range the system will switch an alarm on The system shall also send messages to the caretakers to notify them of abnormal sensor readings The system will use a Smartphone to control the wheelchair movement The service and maintenance information is found in the user manual provided in section three of this document 2 2 4 Errors and alarms The possible errors of the system include i Pressing more than one button at a time This causes immediate halt of the system and error is handled by using a roll back strategy and sound notification of an occurrence of an error This enables the user to select only one instruction at time 21 GROUP 15 46 AUTOMATED WHEEL CHAIR REPORT il Overheating of components that result to stale state This is caused by leaving the wheelchair on the sun A lot of electromotive force builds up leading to distortion of the electrical signals being sent across the different components 22 GROUP 15 46 AUTOMATED WH
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