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Entrance Security System Group Dec 07-07 April 25th, 2007 Project Team Information Team Members Nahiyan Ali, EE Shrabantee Chatterjee, EE Vaibhav Kumar, EE Alex Weigel, EE Tao Zeng, EE/Math Advisor Dr. Mani Mina Client Dr. Gregory Smith Selected Definition Driver - Software or hardware that controls the interface between a computer and a peripheral device. FCC – Federal Communications Commission I/O – Input/Output Interface board - A device that enables communication between devices ODBC – Open database connectivity RAM – Random access memory RFID - Radio Frequency Identification RS-232 – Computer serial port interconnect SDK – Software Development Kit Transponder - A radio, radar, or sonar transceiver that automatically transmits a signal upon reception of a designated incoming signal. Problem Statement Create a security system for the Senior Design Lab that meets the following requirements: Allow access to authorized personnel only Prevent multiple entry Operating Environment Designed for indoor use Temperature: 65°F to 75°F Relative humidity: 10% to 90% Illumination: (Typical) Intended User(s) Students enrolled in EE491 and EE492 Faculty Custodial Staff Intended Use(s) Improve the current security of the Senior Design lab. Prevent unauthorized entrance to the lab by triggering an alarm. System may be extended to other buildings and rooms as requested by the client. Assumptions Constant power RFID cards only distributed to authorized personnel Tampering is not expected. The camera installed in the room is expected to handle students triggering the alarm intentionally. Suitable mounting place for the device in the Senior Design Lab. Total user(s) weight less than 300 pounds. User(s) is not carrying any extra personal belongings Limitation Range of RFID tag from the transmitter AC power outlets in lab are 120V, 60Hz The project has a budget constraint of $250 Interface board inputs Number of team members Deadline by December 2007 Expected End Product and other deliverables Mountable wall unit Power supply unit Installation instructions and user manual Instruction pamphlet for authorized users Logic and control software Computer input/output interface board Authorized RFID cards and compatible RFID scanner Weight sensor detection Design report Project poster Final report Design Objective Hardware Software Hardware Objectives Select a pre-built interface board with the following characteristics: One USB port capable of data transfer and power distribution 6 analog input ports 6 digital input ports Programmable in an object oriented language such as C# or Java Design a sensor system to determine the state of the two doors (open/close) Design a case to hold the pre-built interface board and wire routing Software Objective Develop utility software to do the following: Driver to communicate between the interface board and the PC Process analog signals from sensors being routed to the interface board Database to store authorized users’ information ODBC driver to communicate between database and PC Trigger an alarm in an event of security breach Design Constraints Range of RFID Weight scale limit Physical size Database size Cost Detail Design Compartment built inside the Senior Design Lab which includes • Door 1 (Hallway door) • Door 2 (Lab/Compartment door) • Weight Scale (Used for multiple entry) Block diagram of the general system State Flow of entrance system System flow of exit system State flow of the general system RFID Texas Instruments Low Frequency Micro Evaluation Kit Part Number: RIK3A-001A S2000 Micro Reader RI-STU-MRD1 mounted on an interface Board with RS-232 IF Port Power Connector Antenna Connector Antenna 9-Pin Sub-D Cable (Female – Female connector) Various Transponder Samples CD With User Documentation and Demonstration Software Getting Started Guide 9V Power Supply Input 100V-240V, 1.5A Weight Sensor Researched several different options Digital weight scale Resistance weight scale Resistive material weight scale Weight scale with RS-232 or USB interface Weight Sensor (continued) Digital weight scale Resistance weight scale Cost Accuracy Reliability Drawbacks $75 High High No means of extracting output reading $40 Medium Low Too many resistor connections Resistive material weight scale $50 Low Medium Load cell weight scale $120 High High May not be accurate over a small weight change High cost Interface board Interface Board (continued) Door Sensor Software Flow Chart of the entrance security system Start Close Door 2 Yes Door 1 open? No Yes Door 2 open? No Read RFID # Trigger Alarm No RFID # Match Yes Open Door 1 Read Weight No Door 1 Closed & Weight match Yes Open Door 2 Driver Module This module will be used by the decision-making block to communicate with the interface board, the RFID reader, and the database. This module provides functionality for hardware such as interface boards, serial ports, and databases. The device driver communicates on behalf of the user program. As the flow chart in figure 15 indicates, the team will use two different types of drivers, namely (1) Hardware drivers and (2) Database driver. Hardware drivers will interact from the external hardware; while the database driver will allow read/write access to the internal database. Database Module The database shall contain the following: User’s Name User’s Weight User’s RFID tag number which will be an 8-bit binary code Evaluation Criteria Functionality Relative important Evaluation Score Resultant Score RFID reader and tag 15% 86.66% 13% Weight Scale 15% 80% 12% Door Sensor 10% 100% 10% Database 15% 66.66% 10% Interface Board 20% 90% 18% Compartment 2% 50% 1% Software Drivers 15% 66.66% 10% Alarm 5% 80% 4% Personal Computer 3% 100% 3% Total 100% 82% Question????