Apparatus and method for measuring velocity and instantaneous spatial position of spherical object siultaneously
AssigneeSumitomo Rubber Industries, Ltd.
InventorsKazunari Yoshida, Shinji Ohshima, Takashi Teraguchi
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Abstract
An apparatus and a method for simultaneously measuring velocity and an instantaneous spatial position of a spherical object. A first group of sensors and a second ground of sensors are arranged at known positions at intervals each less than the radius of the spherical object. The times when the spherical object begins to intercept the sensors of the groups of sensors and the time lengths of the respective interceptions are measured by using an instrumentation device. The velocity and instantaneous spatial position of the spherical object are calculated by using an arithmetic unit on the basis of the measured times and time lengths.
Claims9
An apparatus for simultaneously measuring velocity and an instantaneous spatial position of a spherical object comprising:
- a first group of sensors consisting of a plurality of sensors arranged at first predetermined intervals, wherein each first predetermined interval is less than the radius of the spherical object;
- a second group of sensors disposed at a predetermined distance from said first group of sensors and consisting of a plurality of sensors arranged at second predetermined intervals, wherein each second predetermined interval is less than the radius of the spherical object;
- an instrumentation means for measuring the times when said spherical object begins to intercept energy beams detected by the sensors of the first and second groups of sensors and the time lengths of the respective interceptions;
- and
- an arithmetic unit for calculating the velocity and instantaneous spatial position of the spherical object on the basis of the times and time lengths measured by said instrumentation means.
A method for simultaneously measuring velocity and an instantaneous spatial position of a spherical object in which a first group of sensors and a second group of sensors each consisting of a plurality of sensors arranged at predetermined intervals, each predetermined interval being less than the radius of the spherical object, are disposed at a predetermined distance between the first and second groups, comprising the steps of:
- measuring the times when said spherical object begins to intercept energy beams detected by the sensors in both the first and second groups of sensors and the time lengths of the respective interceptions, and
- calculating the velocity and instantaneous spatial position of the spherical object on the basis of the measured times and time lengths.
Dependencies are inferred from the claim text.