Sains Malaysiana 44(12)(2015): 1661–1669
Angular Velocity and Elevation Angle: The Proposed Human Model Scalable
Tracking Model using Linear Regression
(Halaju Sudut dan Sudut Ketinggian: Cadangan Model
Manusia dengan Model
Pengesanan Berskala menggunakan Regresi Linear)
CHING YEE YONG*, RUBITA SUDIRMAN
& KIM MEY CHEW
Faculty of Electrical Engineering, Universiti
Teknologi Malaysia, 81310 Skudai, Johor Darul Takzim
Malaysia
Diserahkan: 29 September 2014/Diterima: 23 Jun 2015
ABSTRACT
A scalable tracking human model was proposed for recognizing human
jogging and walking activities. The model aims to detect and track a particular
subject by using wearable sensor. Data collected are in accelerometer readings
in three axes and gyroscope readings in three axes. The development of proposed
human model is based on the moderating effects on human movements. Two
moderators were proposed as the moderating factors of human motion and they are
angular velocity and elevation angle. Linear regression is used to investigate
the relationship among inputs, moderators and outputs of the model. The result
of this study showed that the angular velocity and elevation angle moderators
are affecting the relation of research output. Acceleration in x-axis (Ax)
and angular velocity in y-axis (Gy) are the two main components
in directing a motion. Classification between jogging and walking motions was
done by measuring the magnitude of angular velocity and elevation angle.
Jogging motion was classified and identified with larger angular velocity and
elevation angle. The two proposed hypotheses were supported and proved by
research output. The result is expected to be beneficial and able to assist
researcher in investigating human motions.
Keywords: Angular velocity; elevation angle; moderator; motion
ABSTRAK
Sebuah model pengesanan manusia berskala telah dicadangkan untuk
mengenal pasti aktiviti manusia semasa berjoging dan berjalan. Model
ini bertujuan untuk mengesan dan menjejaki sesuatu subjek dengan
menggunakan sensor dipakai pada badan. Data yang dikumpul adalah
bacaan pecutan tiga paksi dan bacaan giroskop tiga paksi. Pembangunan
model manusia ini adalah berdasarkan kepada kesan penyederhanaan
terhadap pergerakan manusia. Dua moderator telah dicadangkan sebagai
faktor sederhana gerakan manusia dan mereka adalah sudut halaju
dan sudut ketinggian. Regresi linear digunakan untuk mengkaji hubungan
antara input, moderator dan output model. Hasil kajian ini menunjukkan
bahawa sudut halaju dan sudut ketinggian moderator memberi kesan
kepada hubungan output penyelidikan. Pecutan dalam x-paksi (Ax)
dan sudut halaju dalam paksi y-(Gy) adalah dua komponen utama dalam
mengarahkan usul. Pengelasan antara berjoging dan berjalan dilakukan
dengan mengukur magnitud sudut halaju dan sudut ketinggian. Gerakan
berjoging diklasifikasikan dan dikenal pasti dengan sudut halaju
dan sudut ketinggian yang lebih besar. Kedua-dua hipotesis yang
dicadangkan disokong dan dibuktikan oleh hasil penyelidikan. Hasil
kajian dijangka memberi manfaat dan dapat membantu penyelidik dalam
mengkaji usul manusia.
Kata kunci: Moderator;
pergerakan; sudut halaju; sudut ketinggian
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*Pengarang untuk surat-menyurat; email: chiyong@fkegraduate.utm.my
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