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US 6,212,129 B1Granted
Device for measuring the velocity of a variety of objects
OwnerMarcel Nussbaumer, Beat Schönenberginventors
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OwnerMarcel Nussbaumer, Beat Schönenberginventors
Estimating the term…
The proposed velocity-measuring device (1) can measure the velocity of a wide range of objects via simple sound waves utilising the Doppler-effect principle. The velocity-measuring device (1) consists of a base unit (10) with a command-display unit (17). The base unit (10) holds a sound wave emitter with no less than one loudspeaker (8), a sound wave receiver with no less than one microphone (9), a computing unit and a display screen. In order to measure velocities the device (1) shall be placed next to the projected object line of movement in such a way that the sound waves and the line of movement meet at an acute or obtuse angle. The sound waves striking the followed object shall be partially reflected and subsequently received by the microphone (9) of the receiver. The difference between the emitting frequency and the echo frequency shall be analysed within the computing unit, producing the object velocity. The calculated velocity shall be shown via the control-display unit (17).
A velocity-measuring device for tracking an object utilizing the Doppler-effect in the difference between the frequencies sent by a sound wave emitter having an emitting frequency, and the frequency of the sound waves received by a sound wave receiver having an echo frequency, comprising a sound wave emitter, a sound wave receiver, and a computing unit, contained within a base unit, a loudspeaker for each sound wave emitter and a microphone for each sound wave receiver, wherein the sound waves and the object line of movement intersect each other within a detection zone in an acute or obtuse angle (α) wherein the base unit has an upper front side centrally positioning the sound wave receiver, a first group of sequentially position sound wave emitters above, and a second group of sequentially positioned sound wave emitters below.
A velocity-measuring device for tracking an object utilizing the Doppler-effect in the difference between the frequencies sent by a sound wave emitter having an emitting frequency, and the frequency of the sound waves received by a sound wave receiver having an echo frequency, comprising a sound wave emitter, a sound wave receiver, and a computing unit, contained within a base unit, a loudspeaker for each sound wave emitter and a microphone for each sound wave receiver, wherein the sound waves and the object line of movement intersect each other within a detection zone in an acute or obtuse angle (α), further comprising an emitting-receiving unit and a computing unit and a display screen comprising a computing-display unit separate from the emitting-receiving unit, wherein a plurality of base units are used for measurement of ball velocities in games using a net in such a way that the detection zones of the base units do not intersect and preferably cover different halves of the playing field.
Dependencies are inferred from the claim text.