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emotional stress kit

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Project Owner : dixithkurra
Created Date : Sat, 25/02/2012 - 19:50
Project Description :
Our goal is to design an Emotional Stress Indicator (ESI) kit that allows you access your emotional pain. If the stress is very high, it gives visual indication through LED display along with a warning beep. It is based on the principle that the resistance of the skin varies in accordance with your emotional states. Resistance varies inverse proportional to the stress. If the stress level is high the skin offers less resistance, and if relaxed resistance is high. The low resistance of the skin during high stress is due to increase in the blood supply of the skin. This increases the permeability of the skin and hence the conductivity of electric current. This property of the skin is used here to measure the stress level. Fig.4 shows a block diagram of the ESI kit. The touch pads of the stress meter sense the voltage variations across the touch pads and convey it to the signal amplifier, followed by LED display for visual indication and a warning beep. The circuit is very sensitive and detects even a minute voltage variation across the touch pads. 
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