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Design And Construction Of Automatic Hand Dryer With Temperature Display
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This project work deals on the design and implementation of an automatic hand-dryer with display capable of drying up a wet hand inserted under its vent and goes off automatically as soon as the ands are removed. The system also incorporates a decimal counting unit that displays the temperature of the blown out air in 0C.
This system is configured using an optp-coupler realized with cadmium-sulphide photocell (c.d.s) at the input. The output of the sensor is conditioned by quad-2-input schmit trigger NAND gate (74132) which serves as the control logic used to trigger a one-shot delay that biases a transistor switch. The transistor commutes a TRIAC (solid state relay) that switches on/off the blower connected to it. When a wet hand is inserted under the vent and blocks the line-of-sight of the sensor, the blower starts to blow automatically as long as the hands are still blocking the c.d.s, else it will stop. The seven-segment display displays the temperature of the blown out air in 0C and resets simultaneously with the switching off of the dryer.
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CHAPTER ONE - [ Total Page(s): 1 ]INTRODUCTIONEngineering is concerned with goal-oriented projects. Projects that can eliminate problems like time lapse, strem and energy spent, cost and environmental dangers/hazards. This project work on the design and implementation of an automatic hand-dryer with temperature display is built to eliminate the dangers and problems associated with the manual process of hand-dryer and to display the temperature of the air used in drying the object. This project is realized with passive and ... Continue reading---
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CHAPTER ONE - [ Total Page(s): 1 ]INTRODUCTIONEngineering is concerned with goal-oriented projects. Projects that can eliminate problems like time lapse, strem and energy spent, cost and environmental dangers/hazards. This project work on the design and implementation of an automatic hand-dryer with temperature display is built to eliminate the dangers and problems associated with the manual process of hand-dryer and to display the temperature of the air used in drying the object. This project is realized with passive and ... Continue reading---
ABSRACT -- [Total Page(s) 1]
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ABSRACT -- [Total Page(s) 1]
Page 1 of 1