WEARABLE WEARABLE BIOSENSORSBIOSENSORSBIOSENSORSBIOSENSORS

PRESENTED BY PRESENTED BY SIJO SIJO JOHNYJOHNY

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WEARABLE SENSORSWEARABLE SENSORSWEARABLE SENSORSWEARABLE SENSORS Wireless miniature sensors Wireless miniature sensors Allow monitoring of physiological signals. Allow monitoring of physiological signals. Used for diagnosis and treatment of diseases.Used for diagnosis and treatment of diseases. Recorded data can be processed to detect patient’s Recorded data can be processed to detect patient’s

clinical situationclinical situationT tT t Two types:Two types:

1. RING SENSOR1. RING SENSOR2 SMART SHIRT2 SMART SHIRT2. SMART SHIRT2. SMART SHIRT

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RING SENSORRING SENSORRING SENSORRING SENSOR

Monitor heart rate and oxygen saturationMonitor heart rate and oxygen saturation Equipped with low power transceiverEquipped with low power transceiver Equipped with low power transceiverEquipped with low power transceiver Accomplishes biAccomplishes bi--directional communication directional communication

ith b t tiith b t tiwith a base station with a base station

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WORKING PRINCIPLEWORKING PRINCIPLEWORKING PRINCIPLEWORKING PRINCIPLE Blood volume in the finger changes with the heart muscle Blood volume in the finger changes with the heart muscle g gg g

expansion and contraction.expansion and contraction. This blood volume changes can be easily detected by photoelectric This blood volume changes can be easily detected by photoelectric

methods.methods.methods.methods. Light emitted from LED is passed through finger and is directed to Light emitted from LED is passed through finger and is directed to

Photoresistor.Photoresistor.O i l d i f bl d d d h bl d lO i l d i f bl d d d h bl d l Optical density of blood depends on the blood volume.Optical density of blood depends on the blood volume.

If the blood volume increases, optical density increases, light If the blood volume increases, optical density increases, light transmission through finger reduces & the resistance of photo transmission through finger reduces & the resistance of photo resistor increases.resistor increases.

Thus the voltage generated by photo resistor varies with the Thus the voltage generated by photo resistor varies with the amount of blood in the finger.amount of blood in the finger.amount of blood in the finger.amount of blood in the finger.

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WORKING OF RING SENSORWORKING OF RING SENSOR

LEDs & PD are placed on the flanks of fingerLEDs & PD are placed on the flanks of finger. Reflective type or transmittal typePD-A captures main signals (Truce pulsate signal + noise)N i f i bt i d b PD BNoise reference is obtained by PD-B.

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BLOCK DIAGRAMBLOCK DIAGRAMBLOCK DIAGRAMBLOCK DIAGRAM

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APPLICATIONSAPPLICATIONSAPPLICATIONSAPPLICATIONS

Catastrophic Detection:Catastrophic Detection: Catastrophic Detection:Catastrophic Detection:--wireless supervision of people during hazardous wireless supervision of people during hazardous

operations.operations.pp Chronic medical condition:Chronic medical condition:

--monitoring the hypertension in cardiovascularmonitoring the hypertension in cardiovascularmonitoring the hypertension in cardiovascular monitoring the hypertension in cardiovascular diseasedisease

--chronic surveillance of abnormal heart failure chronic surveillance of abnormal heart failure c o c su ve ce o b o e u ec o c su ve ce o b o e u e

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ADVANTAGES AND ADVANTAGES AND DISADVANTAGESDISADVANTAGES

ADVANTAGES:ADVANTAGES:--Continuous monitoringContinuous monitoring--Right Treatment at the right time at right costRight Treatment at the right time at right costg g gg g g--Easy to wear and takeoff.Easy to wear and takeoff.--Reducing the health care costReducing the health care cost

DISADVANTAGES:DISADVANTAGES:--Initial cost is highInitial cost is high--Battery life is lessBattery life is less

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CONCLUSIONCONCLUSIONCONCLUSIONCONCLUSION

Th i d hi ff iTh i d hi ff i The ring sensor and smart shirt are an effective, The ring sensor and smart shirt are an effective, comfortable, and mobile information infrastructure comfortable, and mobile information infrastructure that takes the advantage of telemedicine andthat takes the advantage of telemedicine andthat takes the advantage of telemedicine and that takes the advantage of telemedicine and information processing. information processing.

It is expected that the smart shirt leads to theIt is expected that the smart shirt leads to the It is expected that the smart shirt leads to the It is expected that the smart shirt leads to the realization of “Affordable Healthcare, Any place, realization of “Affordable Healthcare, Any place, Anytime, Anyone”.Anytime, Anyone”.y yy y

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