Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Patent
1993-08-05
1996-01-02
Buczinski, Stephen C.
Optics: measuring and testing
Velocity or velocity/height measuring
With light detector
3561523, 273185R, 2502221, G01P 336, G01B 1112, A63B 6936
Patent
active
054813557
ABSTRACT:
The initial movement of a spherical body is detected by detecting the intersection with a light beam emitted from trigger light illuminating portion 2 to trigger light-receiving portion 3, and as a result, measurement of time by an arithmetic processing unit is started. During flight, spherical body 1 intersects light beams emitted from surface velocity sensors 4 and 5, the reflected light therein is detected by these surface velocity sensors 4 and 5, and the surface velocity of spherical body 1 is then measured. Spherical body 1 continues in flight and intersects at least two light beams irradiated from multi-beam illuminating portion 6 which are detected by multi-beam light-receiving portion 7. Based on a signal from multi-beam light-receiving portion 7 the arithmetic processing unit measures the time of intersection of spherical body 1 with a light beam, and then calculates the angle of elevation, horizontal angle, velocity and surface velocity of spherical body 1 based on the aforementioned measured time period. Furthermore, this arithmetic processing unit also calculates the amount of directional rotation of spherical body 1 based on the aforementioned calculated angle of elevation, horizontal angle, velocity and surface velocity of spherical body 1.
REFERENCES:
patent: 3759528 (1973-09-01), Christophers et al.
patent: 4542906 (1985-09-01), Takase et al.
patent: 5226660 (1993-07-01), Curchod
Mitsubishi Electric Giho, GL-1000, vol. 58, No. 2, 1984.
Chujo Yasuyuki
Iijima Kenzaburou
Kondo Katsufumi
Masuda Katsuhiko
Yataka Kouji
Buczinski Stephen C.
Yamaha Corporation
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