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Introduction
Problem Description PDF Print E-mail
Written by Junjie Jin   
Monday, 03 January 2011 21:32

The security and privacy issues become increasingly critical, which leads to a rapid growing demand for monitoring houses and automatic access control systems. Suppose there is a housing estate with many buildings or business offices in it, and there are multiple entrance gates for this housing estate. Hiring gatekeepers to manage each gate is a common practice in China. However, it is costly and inefficient, to say nothing of human error. So it is necessary to design a remote access control system to control the gate so that access of people entering a housing estate will be controlled by the automate recognition system or by a remote manual control. However, the existing products in markets are constrained by either limited identifying methods or limited remote control range. Consumers and potential customers are seeking an easy but all round product which can be used from anywhere by any member of the family or organization.

By analyzing the disadvantage of existing wired access control system in market, we prefer a wireless system. The chief drawback of a wired access control system is extra wiring and construction, and limited remote control range due to the length of wires. However, we can eliminate this drawback if we choose to design a wireless access control system. The wireless approach eliminates the need of reconstructing the underground pipelines, which saves a lot of time, labors and materials, and it increases remote control distance. Furthermore, it is much more aesthetically pleasing than the wired approach. As a result, the reason to implement a wireless access control system is compelling.

Many products in market use either fingerprint recognition or password to verify visitors, which is not applicable to irregular visitors such as express delivery people. The growing demand for car access control led to verification method by using Radio Frequency Identification (RFID), which has some drawbacks such as costly, vulnerable to theft or damage, and again, not applicable to irregular visitors.

 
Executive Summary PDF Print E-mail
Written by Junjie Jin   
Monday, 03 January 2011 21:02

The security and privacy issues become increasingly critical, which leads to a rapid growing demand for monitoring houses and automatic access control systems. However, the existing products in markets are constrained by either limited remote control range or limited identifying methods. Among all the specifications, response speed, recognition accuracy, and cost are vital. Our product include three components and wireless connection: an ARM 11 with touch panel as the frontend at gate with password, image and car license plate recognition and a camera, a central controller with database and processor, and a client end on users’ home computers or cell phones that allows users to check visitors and respond promptly, wherever they are and whatever they are up to. The wireless connection saves wiring and other construction. Test results showed that the recognition mechanism of visitors and cars had high accuracy and that users could successfully remotely control the gate by their cell phones. For further improvements, the car license detection rate will be much higher if the algorithm can be adaptive in a wider range of environment.  A larger touch panel may be used at frontend for better user experience.

Last Updated on Tuesday, 04 January 2011 00:31
 
Introduction to Our Design PDF Print E-mail
Written by Junjie Jin   
Monday, 03 January 2011 21:42

We came up with an all round system to cope with the problems and all situations discussed above to make sure to both the efficiency and security. In general, the system has two ends and one data processing unit: a frontend at the gate, capable of biometric recognition and car license recognition as well as sending communication request to the house owners; a client end which can be used to manually verify visitors and control the gate to open. In terms of the means by which people enter the gate, we considered two situations: whether s/he is driving a car or not. In terms of the type of visitors entering the gate, we came up with three possible scenarios.

Last Updated on Monday, 03 January 2011 22:17
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