unconstrained sleep measuring device for breathing movement n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Unconstrained Sleep Measuring Device for Breathing Movement 非穿戴式睡眠呼吸運動量測裝置 PowerPoint Presentation
Download Presentation
Unconstrained Sleep Measuring Device for Breathing Movement 非穿戴式睡眠呼吸運動量測裝置

Loading in 2 Seconds...

play fullscreen
1 / 33

Unconstrained Sleep Measuring Device for Breathing Movement 非穿戴式睡眠呼吸運動量測裝置 - PowerPoint PPT Presentation


  • 117 Views
  • Uploaded on

Unconstrained Sleep Measuring Device for Breathing Movement 非穿戴式睡眠呼吸運動量測裝置. Presenter: Kun-Han Jhan Advisor: Dr. Chun-Ju Hou Date:2013/12/25. Outline. Problems and Rationale Purpose and Specific Aims Background and Literatures Review Materials and Methods Preliminary Results References.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

Unconstrained Sleep Measuring Device for Breathing Movement 非穿戴式睡眠呼吸運動量測裝置


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
unconstrained sleep measuring device for breathing movement

Unconstrained Sleep Measuring Device for Breathing Movement 非穿戴式睡眠呼吸運動量測裝置

Presenter: Kun-Han Jhan

Advisor: Dr. Chun-Ju Hou

Date:2013/12/25

outline
Outline
  • Problems and Rationale
  • Purpose and Specific Aims
  • Background and Literatures Review
  • Materials and Methods
  • Preliminary Results
  • References
problems and rationale
Problems and Rationale
  • Insomnia ratio: 19.3 %
    • Taiwan Society of Sleep Medicine (2013)
problems and rationale1
Problems and Rationale
  • Sleep disorders
    • Arousal and sleep fragmentation
    • Much movement during sleep
    • Restless legs syndrome during sleep
    • Periodic limb movements during sleep
    • Sleep apnea
problems and rationale2
Problems and Rationale
  • Sleep apnea features
    • Snoring
    • Fatigue
    • Sleep deficit
    • Duration of breathe pause:10s~90s
problems and rationale3
Problems and Rationale
  • Technologies for the evaluation of sleep problems
    • Evaluating the quality of sleep
      • Sleep diary, questionnaire
      • Polysomnography (PSG), actigraph
    • Preventing pressure sore and falling
      • Air mattress, image monitor, pressure sensing mattress
problems and rationale4
Problems and Rationale
  • Disadvantage of current techniques in evaluating the quality of sleep
    • Subjective evaluation
    • Need to memorize sleeping status after waking up
    • Need to wear multiple sensors on body
    • Limitation of manpower in clinical care
    • The privacy problem
purpose and specific aims
Purpose and Specific Aims
  • Design an unconstrained sleep measuring device for breathing movement.
    • Analog and digital circuits design
    • System calibration and experimentalverification
background and literatures review
Background and Literatures Review
  • Validation of Unobtrusive Pressure Sensor Array for Central Sleep Apnea Screening

Daphne Townsend, Student Member, Rafik Goubran, Fellow, Frank Knoefel, and Judith Leech

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, VOL. 61, NO. 7, JULY 2012

slide10

Background and Literatures Review

  • Identifying body movement
background and literatures review1
Background and Literatures Review
  • Pressure Sensor Array v.s PSG
background and literatures review2
Background and Literatures Review
  • Detection of Sleep Disordered Breathing with Pressure Bed Sensor

Guillermina Guerrero, Juha M. Kortelainen,Elvia Palacios, Anna M. Bianchi,Giulia Tachino, Mirja Tenhunen, Martin O. Méndez,and Mark van Gils

35th Annual International Conference of the IEEE EMBS,Osaka, Japan, 3 - 7 July, 2013

background and literatures review3
Background and Literatures Review
  • The eight different Pressure Bed Sensor respiration signals
materials and methods
Materials and Methods
  • System architecture

Analogy and Digital

Circuits

Computer

Analogy Circuit Module

Digital

Signal Process

Pressure

Sensor

Mattress

Digital Circuit Module

Display Pressure Signal

BluetoothModule

materials and methods1
Materials and Methods
  • System architecture

Sensor

1~7

7 –Channel

analog signal

Constant Voltage

Source

Bridge circuit

AD623

Sensor

8~14

Constant Voltage

Source

Bridge circuit

AD623

Sensor

15~21

Constant Voltage

Source

Bridge circuit

AD623

Pressure

Sensor

Mattress

Multi-channel measurement module

Sensor

22~28

Constant Voltage

Source

Bridge circuit

AD623

Sensor

29~35

Constant Voltage

Source

Bridge circuit

AD623

Sensor

36~42

Constant Voltage

Source

Bridge circuit

AD623

Sensor

43~49

Constant Voltage

Source

Bridge circuit

AD623

materials and methods2
Materials and Methods
  • Pressure Sensor
    • Force sensing resistors (FSR)
      • Flexible
materials and methods3
Materials and Methods
  • Design of sensor pad
    • Size: 70cm × 70cm
    • No. of sensor: 7 × 7 FSRs
materials and methods4
Materials and Methods
  • Bridge circuit
    • Can detect small resistance changes
    • Adjust the lower limit of measurement
materials and methods5
Materials and Methods
  • Instrumentation Amplifier
  • AD623
  • Frequency response
    • 800kHz at gain:1
  • CMRR: 90dB
materials and methods6
Materials and Methods
  • Multi-channel measurement module
    • 7 Multiplexer
    • 1 Decoder
materials and methods7
Materials and Methods
  • MSP430F5438A
    • Low Supply Voltage Range
      • 2.2Vto 3.6V
    • Ultralow Power Consumption
    • A/D converter with 12-bit,and 16-channel input
    • 4USCI
    • 16K RAM
    • 256 KB Flash Memory
    • Shortest cycle instruction execution 125ns
    • I/O pins:87
materials and methods8
Materials and Methods
  • Bluetooth Mode
    • BTD43x
    • Low cost
    • Low power
    • Serial Port Profile
    • HyperTerminal Settings
    • Transmission distance:100m
materials and methods9
Materials and Methods
  • System Caliration
    • FSRcalibration
    • System calibration
materials and methods10
Materials and Methods
  • FSR calibration

Different Force input

(20 g to 500 g)

Pressure sensor

Multi-meter

(K ohm)

materials and methods11
Materials and Methods
  • Calibration of analog circuit

different input resistance

Analog circuit

(49 channel)

Multi-meter

(V)

Input resistance

150k Ω

7k

3k

2k

1k

0.5k

preliminary results
Preliminary Results
  • FSR calibration
preliminary results1
Preliminary Results
  • Digital circuit calibration
preliminary results2
Preliminary Results
  • Pressure distribution

Aspiratory

Aspirated

preliminary results3
Preliminary Results
  • Pressure distribution

Aspiratory

Aspirated

preliminary results4
Preliminary Results
  • Pressure distribution

Aspiratory

Aspirated

preliminary results5
Preliminary Results
  • Pressure distribution

Aspiratory

Aspirated

references
References
  • 台灣睡眠醫學學會http://www.tssm.org.tw/
  • Daphne Townsend, Student Member, IEEE, Rafik Goubran, Fellow, IEEE, Frank Knoefel, and Judith Leech(2012), Validation of Unobtrusive Pressure Sensor Array for Central Sleep Apnea Screening,IEEE
  • Guillermina Guerrero, Juha M. Kortelainen,Elvia Palacios, Anna M. Bianchi, Member,. IEEE,Giulia Tachino, Mirja Tenhunen, Martin O. Méndez,and Mark van Gils, Member, IEEE (2013) "Detection of Sleep-Disorbered Breathing with Pressure Bed Sensor",IEEE, vol. 35, pp. 1342 - 1345