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8/8/2019 2b-Parameters and Human Motion Measuring System
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PARAMETERS AND HUMANMOTION MEASURING SYSTEM
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VARIABLES FORCE
MOMENT
TIME (t)
DISPLACEMENT Linear
Angular
VELOCITY Linear Angular
ACCELERATION Linear
Angular
Kinetics
Kinematics
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MOTION DEFINITION
a natural event that involves a change in
the position or location of something
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Motion Concept Process
Period involved
Maximum rate of 3 x 10 m/s (light speed)
Reference Origin
Point/Axis
Displacement Location
orientation
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Factors Leading to Motion Force
Pushing
Pulling Orientation
Moment
Example: A Bicycle rider going down a slope is accelerating because:
(i) gravity
(ii) Propulsive
(iii) Friction
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Analysis Time
Kinetics
Force
Moment
Kinematics
Linear
Angular
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0 0.5 1.0 1.50
10
20
30
Time (sec)
meters/sec
Sepak Kuda, 3D Ball Linear Velocities
0 10 20 30 40 50 60 70 80 90 1000
0.1
0.2
0.3
0.4
0.5
Percent Time
Volts
Normal & Amputee left rectus femoris EMG
left rfem emg of a normal subject
left rfem emg of an amputee subject
The2 mm PTB socket after stress
analysis of 100 kPa at the PT bar.
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MOTION MEASURING SYSTEM
(MMS)
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VALUE OF MMS(1) Cost
Equipment Hardware
Software
Staff Training
Salary
(2) Characteristics Abstract
Availability
Transportability
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Cont.
(3) Test Speed
Patients Comfort
Acceptance
Coverage
Data Processing
Accuracy
Results
Diagnosis Treatment
Evaluation
Reliability
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TYPES OF MMS(From The Point of Imaging)
Analyser (Full Biomechanical Analysis System)
9 Parameters
Complex Expensive
Accurate
Evaluator (Movement Evaluation System)
Less expensive
Easy operation
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Analyser
(Full Biomechanical Analysis System)
Cameras
Types
Video Infrared
Number
More than 3 cameras
Speed
Minimum 50 Hz (fps)
High-speed (up to 2000 fps)
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Cont
Brands
Infrared VICONPEAK
ARIEL PERFORMANCE
ELITE
MOTION ANALYSIS CAPTURE
ORTHO TRAK
MACREFLEX
Video VICONPEAK
ARIEL PERFORMANCE
SP2000
Markers Passive
Active
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Evaluator
(Movement Evaluation System) Visual*
Timing
Displacement
Acceleration
Transducer
Muscle
* Except Visual, all others are not an imaging category
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Cont
Visual Naked eye
Real-time One-off
Unaccurate
Timing Watch
Stopwatch
Trigger
Wrist watch
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Cont
Displacement Linear
Ruler Measuring tape
Angular Goniometer
Acceleration Meter
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Cont
Transducer
Force
Platform or plat
Moment
Muscle Electromiography
Electrod
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Those equipment will be covered indetail in the next topic.