home automation lightning motion sensor and zigbee wireless

home automation lightning motion sensor and zigbee wireless Essay example
Masters
Essay
Engineering and Construction
Pages 5 (1255 words)
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Name Instructor Course Date Literature Review Introduction Presence detectors are sensors designed to minimise the amount of time lights are left on unnecessarily. For instance when a room is vacated or there is adequate natural light, the lights in the building must turn off…

Introduction

Most presence detectors have an in-built light sensor (lux) that will turn off the lights if there is sufficient natural light. Regulating lights with a presence detector may save up to 65% of the total cost spent on lighting energy (CP Electronics, 2013). How the system works Presence detectors also known as PIR (Passive Infra-Red) work on a principle similar to that applied in motion detectors. These devices log the thermal radiations of their environments or area under detection. When thermal radiation in the area is detected, for example, in the case of a person coming close to the sensor, the detector will convert these vibrations into measurable electrical signals which will then turn on the lights. Presence detectors utilised in controlling lighting assist in the continuous adjustment of the output of faint lighting systems. This functionality facilitates management of energy saves costs over the conventional switching systems. Presence detectors provide an automatic hands-off lighting system that combines user comfort with an optimum energy consumption (Theben, 2011). Belki’s new device called WeMo makes home automation simpler. According to the company manufacturers, the device allows the user to control home-entertainment and other applications using iOS devices. Belki’s WeMo system incorporates a number of devices that are linked to the users Wi-Fi network. The system can then be managed by an iPad app or WeMo iPhone. ...
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