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Galvanometer In Mobile Phone

 
 
     
Job Summary:
 
Job Type: Project
Budget: $ 100-300
Required Skills: Analog, Circuit Design, Digital, Electronic, Other (Engineering)
Attached Files: (None)
 
Status: Closed for bidding
 
Buyer Summary:
 
Username:
DancerBee  
Feedback Score: Rating: (No Feedback Yet)
Award Reliability: 12 posted 0 paid
 
Location: Delhi, Ncr, India
Member Since: August 30, 2008
 
Invited Users: There are no invited users


Description
We want you to develop the smallest possible chip that can be embedded in the modern day mobile phones, which will be able to pass a very small alternating/ direct electric current into the body of the user when the user holds the phone.

The chip will be connected to the battery of the phone, and the outer body of the phone which will have a metallic rim on its edge all around. When the user holds the phone, his hand will come in contact with the rim allowing the current to pass.

The galvanometer (Wheat stone Bridge) has to detect the resistance of human body to the flow of current. In order to be effective, it has to report the slightest changes in skin resistivity, therefore it has to be extremely sensitive.

The chip would be instructed in run time to deliver alternating current (or DC) in range between 0.5 Hz to 30 Hz based on different circumstances. It will monitor the resistivity and store the changes in resistivity in phone memory, that will be accessed by a software.

The software will provide visually the changes in resistivity, magnitude, duration and frequency over time to the user by means of a graph. The graph may look like a stock share chart with a line that goes up and down reflecting the body resistance over hours, days, weeks, months and years. This will enable the user to know his body resistance feedback over a period of time. This chart will be documented for the entire life of the user, and may be sent to our central server via internet.

For understanding the concept please refer to http://www.gsrmeter.org/. This website does NOT belong to me and is included only for your information.




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