TeleHealth Module: Difference between revisions
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#REDIRECT [[TeleHealth_Hardware]] |
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=The 10usd TeleHealth Module= |
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* This low cost, multifunction peripheral will provide a means through which the XO can relay valuable medical diagnostic data from the field to doctors many kilometers away. |
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* It will compose of a three lead EKG providing valuable information about the heart's electrical status, enabling diagnosis of congenital defects and various arrhythmias. |
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* It will also contain a multipurpose NIR diagnosis tool whose primary function is that of a pulse oximeter, providing information about the oxygen saturation of the blood. |
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** See nirdiagnositics.com for other NIR functions |
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== 3 Lead EKG == |
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* Multiple Op-Amps pick up, amplify, and filter electrical impulses picked up by near-heart electrodes. |
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* DyD/DyDisMe has schematics for an EKG using 714 style op-amps. |
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== NIR Diagnosis Aid == |
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* Based on the principles of the differences in absorption of oxygenated and non oxygenated hemoglobin |
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* 800-1000nm light from LEDs are often used in NIR tools |
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* Red light is generated from similar LEDs. |
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** 5-15c ea |
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* Light is picked up by photodiodes, converted to current. |
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* This current is amplified and converted to voltage by a [http://media.maxim-ic.com/images/qv/3760.gif|MAX4006] or equivalent chip |
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** 1.275 usd |
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== ADC/DAC == |
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* C8051F321 or equivalent chip |
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** A/D 5x10b minimum |
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** This specific chip provides A/D 13x10b |
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* alternatively a USB micro-controller may communicate with dedicated ADC/DAC chips via PWM, to lower cost. |
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[[Category:Hardware ideas]] |
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[[Category:Hardware]] |
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[[Category:Peripherals]] |
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Latest revision as of 00:27, 21 January 2008
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