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1 NATIONAL UNIVERSITY OF SINGAPORE Department of Electrical and Computer Engineering Department of Electrical and Computer Engineering EE2006 Digital Design Laboratory Manual for Digital Design Experiment: D1-02 Digital Surveillance System Session: Semester I, 2007/08
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2 Digital Design Experiment: D1 - 02 Digital Surveillance System Design and implement a surveillance system which will be useful to recognize intruders into a secure area (e.g. Defence Labs, Singapore), as described below. Four cameras (IDs 1 – 4) which are located along the path leading to the lab entrance, capture images of people entering the premises . The four images are first independently processed by a face recognition (FR) system that outputs a 1 if it recognizes the person in the image and a 0, otherwise. The recognition result from each image is available as a 3- bit code, where the two MSB’s represent the camera ID, and the LSB is the corresponding FR output. These are collectively evaluated (a collective decision is more accurate in practice compared to relying on only one recognition result) to decide whether the person is known or is an intruder. An intruder is detected if either of the following conditions is true: a) three or more FR outputs are 0; b) the FR outputs are tied (2 1’s and 2 0’s), and the FR output of Camera 3 is 0. To implement the above system in hardware, assume that when a READY signal is input to your circuit with a pushbutton switch, the four 3-bit CODEs are available. Use a dip switch to input the CODEs into your circuit in successive clock cycles. If an intruder is detected, assert an ALARM signal to light up an LED for 10 clock cycles. ( Hint : You may also want to think about how to reliably enter data into your system. Also, it is useful to give pushbutton input to your system through a single pulser circuit. ) The digital electronics laboratory has stocks of TTL integrated circuit components that are listed below. Depending on your circuit design you may need a subset of all the IC’s listed. You may pick the ones that you need after your design has been verified and approved . In addition to IC’s, you will be given a custom package containing a breadboard, a 7805 voltage regulator IC, push-button switches, 4-bit dip
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This note was uploaded on 08/02/2009 for the course ECE EE2006 taught by Professor Dr.kassim during the Fall '07 term at National University of Singapore.

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