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An engineering professor and five students at Central Michigan Universityhave created a ''Smart Cane'' to read electronic navigational tagsinstalledbetween buildings to aid the blind in reaching their destinations moreeasily. ''This
project started as a way for me to teach students to see andunderstand the ways
that engineering can be used for the greater good,''said Kumar Yelamarthi, the professor and project leader. ''We wanted to dosomething that would help people and make our campus more accessible. '' During the spring term, Yelamarthi and five senior engineering studentstested the cane, which is equipped with Radio Frequency Identificationtechnology, similar to what retailers put on products to keep them frombeing stolen. The Smart Cane contains an ultrasonic sensor that is paired with aminiaturenavigational system inside a messenger style bag worn across the shoulder. For the test, the students installed identification tags between twobuildings on the campus in Mount Pleasant, Mich. A speaker located on thebag strap gave audio alerts when the system detected an obstacle and toldthe user which direction to move. Students wearing glasses that simulate visual impairment tested the cane. The students also created a vibrating glove to assist those who are bothvisually and hearing impaired. Yelamarthi said it's one of the first outdoor applications of RFID and saidhe plans for students in upcoming classes to further refine the systemwhilehe seeks grants to speed the research. The next step probably involves using the system in a wider area.
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Thanks for understanding!MethodologyAs usual, we have grouped our recommendations by the best budget kit, the kit offering the best value, and the best high end kit system. Which DIY route – Easy DIY or Pro DIY?A home security camera system consists of the following essential parts:The heart of the system, the Network Video Recorder NVRBefore the advent of network cameras, the equivalent of the NVR would have been called a DVR which works only with analogue security cameras. An NVR works only with network based cameras. So remember a DVR works with analogue cameras. and an NVR works with network cameras only. In this article, I will be looking only at NVR based systems. This is because DVR based analogue systems are on their way out, they simply cannot
compete with the quality and convenience of network cameras and NVRs. Cameras – Network cameras a. k. a IP cameras are fully digital – the image is sent digitally to the NVR through a network cable instead of an analogue BNC cable as in a DVR based system. This enables resolution higher
than 1080p2MP, and currently you can go up to 4MP.
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