License Plate Recognition (LPR) Auto-gate System
Contents
1. In addition the environmental requirements will be tested again as event simulation under different conditions such as rainy or foggy weather Along with the performance and accuracy of the system robustness and durability of the external enclosure and internal components are equally important since the product is usually located outdoor and is used on a daily basis Stress test and accelerated life test will be conducted to ensure the durability of the product Doing so will cover the issues that arise from realistic situations and hence eventually enhance the quality and reliability of the product Copyright 2009 Seco Innovations Corporation Seco S INNOVATIONS 4 Conclusion This functional specification document clearly outlines capabilities functions requirements and standards for the LPR auto gate system By using the specifications as guideline Seco Innovations will provide more secure and convenient parking environment which everyone can benefit from The proof of concept system is well in progress of development and it is expected to be completed and meet all functional requirements defined by the target date of April 15 2009 In addition the final product will be completed in one year from the prototype production date should the system is to be commercialized 10 Copyright 2009 Seco Innovations Corporation SECO Gj innovations 5 References 1 Agile Business Consultants EU RoHS Directive Compliance S2. angles the test plan will ensure that the system can recognise a skewed or slightly rotated image of the license plate The LPR system will also be tested practically under different environmental conditions Copyright 2009 Seco Innovations Corporation SECO Qj innovations for example dark area using a light source and bad weather conditions such as rain fog or snow 3 2 Integration Test After all of the individual modules have satisfied their own requirements the integration test will be conducted to ensure the performance and the functionality of the overall system To simply state the integration test will mainly focus on testing the virtual connection between the PC with camera module and the microcontroller board with metal detector The test will also monitor the valid information transfer between the modules By fulfilling integration test requirement all of the system parts will speak the same language upon integration 3 3 Event Simulation Once the integration test is successfully completed event simulation test will be implemented to verify that the system can function accurately and properly in practical circumstances To simplify the test plan the event simulation will be conducted in an open space which can act as a replicated parking lot Different types of vehicles will approach the metal detector in various speeds to see if the system operates accurately regardless of the type and the speed of the vehicle
3. there will be still no physical barrier to crime prevention but the system will be activated if any unregistered vehicle or person tries to trespass the gate and sound an alarm immediately Also using the LPR system would eliminate the use of any entry keys which results in more convenience for users of the parking lot The development of the LPR auto gate system would be planned for two phases The first phase contains the following features e The approaching vehicle triggers the camera activation e The vehicle license plate number is recognized via digital image processing e The gate opens for access when the recognition is verified The above would be the basic and primary function of our system and will be completed in the mid March of 2009 Then the second phase of the system development would play a key role in the security and planned for completion in April 2009 The features are e The camera detects any approaching vehicle whilst the gate is open e The license plate number recognition is implemented for verification of the following vehicle after an entry e The gate closes if the vehicle is unregistered e Alarm sounds immediately if the vehicle attempts to enter the gate e Camera captures and save the trespassing scene Thus the access to the parking area is limited not only by the gate which works as a physical barrier but also by the security alarm and surveillance camera which act as a virtual barrier By adding the
4. to be clear in sight for all weather and environmental conditions 2 7 Safety and Security Requirements R25 Il R26 II The gate shall not close when any person or vehicle is detected at the line of the gate The priority of the access shall be granted as first come first served Copyright 2009 Seco Innovations Corporation SECO J innovations R27 II R28 II R29 II1 R30 II1 The alarm shall sound immediately at the moment of the trespassing attempt Any approaching vehicle whilst the gate is open or closed shall be detected for LPR verification Any person enters through the opened gate shall be detected as trespassing The gate shall have a separate entry door for residents access by foot to prevent false alarm 2 8 Performance Requirements R31 Il R32 II R33 Il R34 Il GEI R36 III The camera shall be activated and capture the image of an approached vehicle to the gate immediately upon detection The LPR system shall perform digital image processing for verification immediately after camera module captures an image The alarm sound shall be loud enough for adequate notification to security personal on site for better security performance The character recognition shall be completed within one second after the image of the license plate is captured The camera shall remain activated while the gate is open to verify any following entry attempt The vehicle
5. A seco g INNOVATIONS February 16 2009 Mr Patrick Leung School of Engineering Science Simon Fraser University 8888 University Drive Burnaby BC V5A 1S6 Re ENSC440 Functional Specification for a License Plate Recognition Auto gate System Dear Mr Leung The attached document Functional Specification for a License Plate Recognition LPR Auto gate System outlines the system behavior of our project for ENSC 440 Capstone Engineering Science Project Our goal is to design and implement an auto gate system for residential parking lots using the LPR technology which captures a license plate image of a vehicle and verifies its registration status by post digital image processing for the parking lot access control The purpose of the document is to provide functional specifications of our system regarding several necessary functional requirements for its implementation and design including general physical electrical safety LPR software requirements and others Further research design and development will refer to this document as a strong guideline for the final product Seco Innovations Corporation consists of three talented 5th Engineering students Danny Choi Wook Sun Shim and Jaehoon Shin Gathering various knowledge and strength from our disciplines in Electronics and Systems options and from industrial co op work experiences we are here to challenge on the project that can replace the current solution by providing bett
6. CO Gj innovations D A R15 Ill R16 Ill The computer shall not be powered off instead it shall be in sleep mode when it is not used to Save power consumption The camera module shall be powered by the power supply from the auto gate if it is directly installed onto the gate The desktop and the database shall have the back up power source in case of the power failure 2 5 License Plate Recognition LPR Algorithm Requirements R17 Il R18 Il GERT R20 II1 The license plate number shall be converted to ASCII characters accurately at least in 95 success rate The localization of the license plate shall be made correctly without confusion with other similar objects in figure The digital image processing shall be completed within one second to minimize the waiting time of the vehicle operators and hence to provide greater convenience The recognized license plate number shall be searched in database and valid verification must be provided to grant an access 2 6 Environmental Requirements R21 I1 R22 II R23 II R24 II1 The LPR system shall work properly in all weather conditions such as rain snow fog and also in night time On board system shall be enclosed and resistant to moistures or water On board system shall operate properly regardless of the four seasons In addition it shall operate properly in the temperature range of 20 C to 50 C The camera lens shall be enclosed so
7. Heel 4 2 7 Safety and Security Requirement Seer 0c scccssesdesceensseeses eeesssersneneeeetiecsseedeeneeteese 4 2 8 Performance Ee le reenen EE CH 5 2 9 WE cbr ROC EES roncon o a E E A 5 2 10 Reliability and Durability Requirement Ak 6 2 11 Standards and Regulations Heouirements Ak 6 SE rette See vi cecncnecscente ede demereeestanisvenesesacness 7 ER TEE 8 3 1 Unit TGS E 8 3 24 MG AtONM IC stah TA 8 S Aaa DEER et JEE JEE 9EEEEEeEE 9 3 4 Event SimUlationni gers D ZE D en i ed ee Ee 9 ee CCUG ae SR i en aea D D WW sex 10 5 References 8 SS SR 8 SE SS SS 38 PR Sen 11 iii Copyright 2009 Seco Innovations Corporation SECO Qj innovations List of Figures Figure 1 Proof of Concept System Flowchart see Glossary LCD Liquid Crystal Display LED Light Emitting Diode LPR License Plate Recognition RF Radio Frequency RoHS Restriction of Hazardous Substances WEEE Waste Electrical and Electronic Equipment Copyright 2009 Seco Innovations Corporation SECO INNOVATIONS 1 Introduction The License Plate Recognition LPR Auto gate System is an innovative solution to the motor vehicle theft that provides more secure and convenient parking environments The system recognises license plate from the approaching vehicle and digitally verifies whether the vehicle is permitted to enter premises By keeping trespassers and potential thieves from entering the property both c
8. ar owners and building managements can benefit from the system The functional requirements for the system proposed by Seco Innovations will be described in this document in detail 1 1 Scope The functional specification for the system defines the requirements and the system standards which need to be met by the LPR auto gate system The list of functional requirements will drive the design of the proof of concept system as well as final product in the future as the system is to be commercialized Thus the document will provide a guideline for the system design decisions later on 1 2 Intended Audience The functional specification outlines the requirements of LPR auto gate system which will provide better security for multi residential building parking lots This document is intended for use by all individuals of Seco Innovations Corporation to ensure valid quality and performance of the system Each team member shall refer to the functional requirements to keep the product development in the right path towards a common goal Furthermore it provides a general idea of how the system operates to building managers and residents 1 3 Classification The following notations will be used to denote functional requirements throughout the functional specification of the system Rn p A functional requirement where R is the abbreviation for requirement n is the functional requirements number p is the priority of the functional requirement
9. detector shall be located at a close distance to the camera to capture the license plate clearly 2 9 Usability Requirements R37 Il GEI GERT R40 I1 All software user interfaces shall be written in English LPR algorithm software shall be user friendly intuitive and easy to learn by building management The verification status shall be clearly displayed to the vehicle operator on LCD panel and LED The alarm shall clearly notify security personal on site should any trespassing attempt is detected Copyright 2009 Seco Innovations Corporation SECO INNOVATIONS R41 ll1 R42 II1 BAS Database for registered vehicle shall be upgradable by building management Database management user interface shall be user friendly intuitive and easy to learn The brief instructions and warning signs regarding the system operations shall be clearly displayed at the parking area for resident education purposes 2 10 Reliability and Durability Requirements RAA R45 Il R46 II R47 II DAS All components shall be serviceable by trained technicians All components shall be resistant to damages caused by the weather conditions such as rain or snow Overall system shall be checked and serviced at least annually for its accuracy and performance Camera module shall be in operational condition as long as it is not turned off manually or its power source is not disconnected from the module Main ser
10. dure R57 lll All user documentation shall be written for the audience with minimal technical knowledge of the system R58 III If the product is to be commercialised internationally all user documentation shall be translated into the languages commonly used in the country Copyright 2009 Seco Innovations Corporation SECO INNOVATIONS 3 System Test Plan To achieve its goal and obtain strong confidence in the final product Seco Innovations has planned highly comprehensive and efficient test methods in all different stages throughout the development cycle At each stage both software and hardware designs will be tested concurrently to ensure the functionality specified in the document More technical details regarding the test plans will be discussed in the future design specifications document The test plan is divided into three stages unit test integration test and event simulation Since the three stages are correlated every requirement must be tested and verified on each stage before proceeding to the next stage 3 1 Unit Test The proof of concept system can be divided into two sub units the microcontroller board with a metal detector and the License Plate Recognition system Each sub unit has different functionalities and requirements to be tested The successful fulfilment on every requirement from each sub unit will eliminate potential errors that are component related upon system integration The metal detect
11. er security and convenience to the public If you have any questions regarding our proposal please feel free to contact me by phone at 604 996 6012 or by e mail at dchoi sfu ca Sincerely luem Aak Clot Danny Choi President and CEO Seco Innovations Corporation Enclosure Functional Specification for a License Plate Recognition LPR Auto gate System A SECO INNOVATIONS Functional Specification License Plate Recognition LPR Auto gate System Project Team Contact Person Submitted to Issued Date Revision Danny Chol Wook Sun Shim Jaehoon Shin Danny Choi dchoi sfu ca Patrick Leung ENSC 440 Steve Whitmore ENSC 305 School of Engineering Science Simon Fraser University February 16 2009 2 2 SECO Gj innovations Executive Summary In these days a lot of high rise buildings or apartments are constructed due to increase in population with limited land size These buildings require huge parking lots that are usually built at underground However the auto theft crime has become critical as the unattended parking areas could be a great draw for thieves To protect the parking lots from any theft crime auto gated system is installed with remote transmitter used as entry key but still thieves succeed at trespassing the gate from any possible flaws of the system The LPR auto gate system is designed to protect thieves from entering the underground parking lots Once the gate is open
12. olutions 2008 http www pb free info index htm Accessed Feb 9th 2009 2 Underwriters Laboratories UL 325 Door Drapery Gate Louver and Window Operators and Safety 2009 http www ul com info standard htm Accessed Feb 10 2009 Copyright 2009 Seco Innovations Corporation 11
13. or for sensing an approaching vehicle will be tested with several different types and sizes of metal to enhance its accuracy of detection By collecting voltage levels from the testing a reference threshold will be set to distinguish a vehicle from other metallic objects The microcontroller board acts as a bridge between the LPR software and the metal detector Not only does it control sending and receiving signal to both sites but it also outputs the pass or fail verdict via LED light and sounds an alarm in case of a trespassing The test on this unit will mainly focus on embedded software to ensure an error free control algorithm and accurate communication with LPR software The test plan will also verify whether the microcontroller control algorithm can process the voltage signal from the metal detector and activate the camera module on main computer immediately The output module on the microcontroller board which includes LED LCD panel and an alarm will be tested by sending random sequence of passing and failing verification data to ensure an error free operation The license plate recognition system acts as the brain of the system and therefore it is probably the most important part among the system components To ensure high accuracy and performances the LPR system will be tested numerous times using different standard British Columbia license plates Also since the different types of vehicles will approach to the gate possibly in various
14. s as denoted by following lists l The functional requirement for the proof of concept system only Il The functional requirement for both the proof of concept system and final commercialised product Ill The functional requirement for final commercialised product only Copyright 2009 Seco Innovations Corporation SECO 9j innowtions 2 System Requirements The general overview of the system and functional requirements of the LPR auto gate system are listed in this section of the document 2 1 System Overview LPR auto gate system can be divided into many smaller parts input metal detector camera module digital image processing module and output system The figure below illustrates the high level proof of concept system flowchart and how the components interact with each other Notifies the Detects Captures imde Localises the verification Metal S Camera Sen 3 license plate status to Detector SE Module yee the Repent and verifies driver i S registration Sound alarm emm lt ifnecessary Figure 1 Proof of Concept System Flowchart When an approaching vehicle is detected by metal detector it activates camera module and an image of the front side of vehicle will be captured Digital image processing module will localise the license plate of the vehicle and perform character recognition from it Then the system will digitally convert the characters to ASCII characters and display the license plate number on
15. second line of defence the LPR auto gate system provides better security and hence provides a peace of mind to users and managements Seco innovations will design the system so that the gate will automatically open based on the verification and stay open so long as it detects any object or person at the line of gate By following the functional specification provided in the later sections of this document the system is expected to provide safer solutions to above mentioned flaws than current auto gate systems do as well as better security and convenience Copyright 2009 Seco Innovations Corporation SECO S INNOVATIONS Table of Contents Executive SUMMAVNY EE i araar innana ii List Of FIQUICS _ Ee mn EE iv GIOSSANY neuen RR EE ooon o MEE iv 1 Introduction ZE dE ranta ta A os EO aiaiai ee 1 NET TEEN A0 NEE 09 EE 1 1 2 Intended AIR Beet e r aa E EEr a a ara a aa E ea riein aanak enini 1 L Classification TEE esueSERSEEKEEESEKSNERE euer EE e A iaaiiai 1 2 System Requirements Fetes c ces sesccncceeneneedeseeeenceen deen EE UMM coed eee 2 2 1 SYSTEM Cer iadnn itaran rae rarae ae aaar aa aE e a E ariii enteen 2 2 2 General REQUMGMCNISH Ee esereeEEEESEEERFESEEER Eeer ENEE BEER eEEEEEEeSeues 3 2 3 Physical REQUIFSMOCMIGSHI aaa ar ra rrara aea Aaa a MOO iiser i 3 2 4 Electrical Requirements Ee deeg 3 2 5 License Plate Recognition LPR Algorithm Requirements AA 4 2 6AEmVironmenta
16. te shall be provided with additional light source to capture a better quality image during night time A sensor shall be at the line of the gate to detect trespassing The integrated system shall be priced under 800 The system shall verify vehicles entering the parking lot as well as vehicles exiting the parking lot for enhanced security The camera module shall be water proof or at least have the protection to such weather condition 2 3 Physical Requirements G R8 Ill GERT R10 Il1 The camera shall not be installed at most 1 5 m above the ground to clearly capture the license plate in adequate angle as most vehicles have their license plate mounted closer to the level of ground The camera mount shall be able to be rotated around 45 horizontally for initial installation The camera mount shall be able to be rotated around 45 vertically for initial installation The camera computer and the database shall be covered with hard cases with a lock system to provide physical limit in its access or possible damage 2 4 Electrical Requirements R11 1 GIE R13 Il The power supply for the microcontroller board shall be sufficient for microcontroller alarm sound and LED module The power supply adapter shall be compatible with the standard North American 110V 120V 60Hz wall outlet The camera shall be powered by the computer through the USB cable Copyright 2009 Seco Innovations Corporation SE
17. the LCD board The system output will turn on LED with green or red to indicate verification status If the system detects any trespasser either by car or foot while the parking lot entrance gate is open the alarm will sound to notify the security personal on site and captures the scene for enforcement purpose Due to the limitation on budget and time the proof of concept system will exclude some features of final commercialised system While other operation stays unchanged the final product shall interact with the entrance gate User interface unit to manage the database of the registered vehicle shall also be included in the final product design Furthermore intranet or internet based interface shall be implemented in the final design to enable visitor vehicle registration by the residents The logic of the system is carefully designed and analysed to provide good sense of security and at the same time to minimize misbehaviour of sounding alarm when it is not necessary The alarm sounds immediately only if an unregistered vehicle or a person tries to pass the entrance gate line 1 The figure is created by using Microsoft Word 2007 SmartArt Copyright 2009 Seco Innovations Corporation SECO INNOVATIONS 2 2 General Requirements GI I GERT GER R4 II GERT GI The distance between the camera site and the metal detector not be too close or too far in order to obtain reasonable image resolution The license plate si
18. ver or personal computer running image processing module shall be on at all times so long as its power source is not disconnected or the machine does not fail due to an unpredictable malfunction 2 11 Standards and Regulations Requirements R49 II R50 I1 R51 Il1 R52 Ill GI All components shall be built with environmentally friendly components that satisfy Restriction of Hazardous Substances RoHS Directive 1 All components shall conform to Waste Electrical and Electronic Equipment WEEE Directive 1 The parking lot gate shall conform to UL 325 Regulation and employ a non contact safety device to prevent injuries or death due to the closing gate 2 All electrical parts of the system shall clearly display warning signs to prevent electrical hazard to the users and technicians All mechanical parts of the system shall clearly display warnings regarding potential hazard associated with the system operation Copyright 2009 Seco Innovations Corporation SECO S INNOVATIONS 2 12 User Documentation Requirement R54 1 All user documentation shall be written in English R55 III User documentation shall include a website with general and technical information of the system a user s manual for end point users and installation guide for vendors and technicians R56 III Installation guide for the engineers and technicians shall provide clear and comprehensive hardware and software installation proce
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