Wireless Body Sensor Networks And its Applications

Presented By:B.Thivya PriyaaG.Siva Sankari

Definition • Body Sensor Network (BSN) is used to

describe the application of motes that will enable wireless communication between several miniaturized Body Sensor Units (BSU) and a single Body Central Unit (BCU) worn at the human body

BSN Architecture • BSN can be broken into three tiers:

Intra-BSN Inter-BSN Beyond-BSN

An AnalogyType of sensor FunctionEar-worn activity recognition (e-ar) sensor

Used for capturing the posture, gait and activity of the patient

Wound healing sensor

Used for monitoring the Progress of healing for burn patients

Blood pressure sensor

Used for measuring the Blood pressure for patients with hypertension

Electromyography (emg) sensor

Used for capturing the muscle activities of orthopaedic patient

Blood glucose sensor

Used for measuring theGlucose level of diabetic patients

Heart rate sensor Used for detecting abnormalHeart conditions of cardiac patients

Real-Time Applications• Human vision

restoration by retina prosthesis.

• Proteus digital health’s "ingestible sensor" (1 sq.mm chip).

• Biosensor Tattoo stops athletes from crashing, by reading lactate level

Implantable Wireless Body Area Network

Our Idea: Monitoring Pre-schoolers using BSN

Pre-schoolers are very active Hard to keep track of them Bio sensors could help Tracking using Sensors

attached in name tags, wrist band or belts.

When they approach danger teachers are informed via access points and then to their PDAs.

Children’s health condition is also monitored

Challenges• Unobtrusiveness• Sensitivity of Sensors• Effective Methods for Data Collection• Compatibility Problems• Transport Layer Challenges• User-Friendliness • Mobility• Data Security and• Privacy

Data Security and PrivacyData Security: Data is securely stored and transferredData Privacy: Data can be used only by authorized peopleApplication scenario:

◦ Emergency; paramedic reads RFID* tag to get the patient’s medical records and his profile.

◦ WBAN is set up with wearable sensors

◦ Nurse reads health data from WBAN and uploads data onto local network

◦ Patient’s gateway device is configured with an Access Policy (AP) that grants access to records (also adapts automatically)

◦ Patient can adjust his AP to hide sensitive data

Erasure Coding

1. Proposed by Wang et al.

2. Dynamic Integrity Check: Each storage node computes and broadcasts an algebraic signature on one data shares

Pros: Data confidentiality, dependability and dynamic integrity achieved simultaneously

Cons: No third party (say, the local server) can perform integrity checks.

Conclusion• BSN sensor will be integrated in the form

of a silicon chip of sub-millimetre size. • By integrating analogue processing and

digital control onto the silicon chip, significant power reduction and increase in computation power can be achieved.

• BSN sensors will get more and more pervasive, and sooner or later they will gradually be weaved like a fabric in our lives

THANK YOU