Difference: HeartBeatMonitor (1 vs. 2)

Revision 22017-11-14 - uli

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META TOPICPARENT	name="SensorKit"

The heart beat monitor

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This consists of an LED and a photocell. If you put your finger in between the LED and the photocell the you can observe small variations in the light received on the photo cell due to the change of blood colour when new oxygenated (lighter) blood is pumped into your body.

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This consists of an Infrared LED and a photocell. If you put your finger in between the LED and the photocell the you can observe small variations in the light received on the photo cell due to the change of blood colour when new oxygenated (lighter) blood is pumped into your body.

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Of course we need high resolution analogue to digital conversion to see this effect on the photo cell signal. In addition we should make sure that as little stray light as possible is seen by the sensor.

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Of course we need an analogue to digital converter to see this effect on the photo cell signal.

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Heart beat sensor with LED and photo cell

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Heart beat sensor with IR LED and photo cell

Uli Raich - 2017-02-05

Revision 12017-02-05 - uli

Line: 1 to 1

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META TOPICPARENT	name="SensorKit"

The heart beat monitor

Heart beat sensor with LED and photo cell

-- Uli Raich - 2017-02-05

Comments

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META FILEATTACHMENT	attachment="blood-2.png" attr="" comment="" date="1486288717" name="blood-2.png" path="blood-2.png" size="969821" user="uli" version="1"

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