STUDIES ON PHYSICAL LOCOMOTION PURSUIT ANALYZER, UTILIZING ELECTRICAL ENGINEERING
- VernacularTitle:エレクトロニクス利用による運動動作の立体的追跡装置 (Physical Locomotion Pursuit Analyzer)
- Author:
SHOICHI NAKANO
;
SUKETSUNE IWAGAKI
;
YOSHITAKA YAMANAMI
;
TOSHIO SAKAI
;
KIYOSHI SAITO
;
RYUSUKE SHIMIZU
- Publication Type:Journal Article
- From:Japanese Journal of Physical Fitness and Sports Medicine
1971;20(1):14-23
- CountryJapan
- Language:Japanese
-
Abstract:
In the studies of physical motion analysis the multiple photographic method with a stroboscope or the fast motion picture which has been used, are not sufficient to pursue a motion of some kinds of sports and of some hidden physical spot only from one direction and difficult to synchronize picture obtaind from three direction.
To make use of electrical engineering from the points of Physiology and Kinesiology, it is worthy of pursuing a physical motion on three dimensions, up & down, right & left and before & behind at once, and furthermore, physiological phenomena in electrocardiogram and electromyogram with connection to the above analyzer.
For that purpose a physical locomotion pursuit analyzer (SN-type, refered to PLPA later on) was devised.
The present devised analyzer is composed of a three dimensions-accelerometor in a gyroscope, a preamplifier, a integration amplifier and a pen-writing recorder.
As already known in the principle of physics, velocity can be obtained by single integration of acceleration rate and displacement by double integration of a acceleration rate.
In above the PLPA, therefore, acceleration rate, velocity and displacement, each of three dimensions can be determined. Capacity of the present analyzer was as follows; Frequency rate : 1.5-20.0 HZ (Static accelerated component under 1.5 HZ was cut by differentiation circuit of DC-cut), time constant of electrical integration circuit : about 0.2sec.
In the present report the outline of PLPA and some data of our experiments obtained by use of it were dealt.
The problems of the telemetering system of this analyzer and digital exhibition by connection to computer require further study.
