Large cities with fleet of vehicles require a system to determine location of movement of passenger vehicles at a given time. Vehicle tracking systems can be used in theft prevention, retrieval of lost vehicles, providing trafricoriented services on lanes. The Vehicle tracking systems VETRAC enables vehicle drivers or any third party to track the location of any moving vehicle. Most modern vehicle tracking systems use GPS[71 modules which is costly in usage and implementation. Many systems also combine a communications component such as cellular or satellite transmitters to communicate the vehicle's location to a remote user. VETRAC uses WiFi IEEE 802.11 b/g for easy and accurate location of the vehicle, which provides effective and simple communication. Vehicle information can be viewed on electronic maps using the Internet or specialized software. We have designed and developed an Intelligent Vehicle Navigation System, which identify an optimally minimal path for navigation with minimal traffic intensity using WiFi. The system can also be used as a city guide to locate and identify landmarks in a new city.

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Auditory Prostheses is necessary for the hearing impaired personnel. Auditory Prostheses is an artificial replacement of damaged inner ear using external body worn speech processor and internal receiver-stimulator for stimulating auditory nerve via electrode array that enables understanding the speech by brain. Speech processor receives an external sound or speech and generates encoded speech data bits for transmission to receiver-stimulator. Development of the Speech Processor of Auditory Prostheses (SPAP) is based on the Analog Devices Digital Signal Processor ADSP-2181 is described. The Dalls DS89C420 micro controller is used as data encoder to send speech information from speech processor to receiver-stimulator via RF transcutaneous link. The system comprises a speech processor, micro-controller based data encoder, radio frequency transmitter, receiver-stimulator, and an electrode array of six electrodes. A six channel Continuous Interleaved Sampling (CIS) algorithm is implemented for the speech processor. A multi-channel cochlear implant of 6 electrodes or simulated resistance array can be driven by the receiver-stimulator for testing its performance. The implementation aspects of CIS algorithm are validated using the test data of speech samples. The results are presented using laboratory model of receiver-stimulator and simulated electrode resistance array with a high-speed data acquisition system.

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