Time of motion, speed, and trajectory height measuring device
First Claim
1. A measuring device comprising:
- (a) an object unit secured to a movable object, said object unit comprising(a1) an acceleration sensor that detects an acceleration event of said movable object,(a2) a threshold circuit connected to said acceleration sensor, and(a3) a first radio transmitter connected to said threshold circuit; and
(b) a monitor unit external to said object unit comprising(b1) a first radio receiver wherein said object unit communicates with said monitor unit by sending from said radio transmitter at least one radio signal to said first radio receiver,(b2) a first processor connected to said first radio receiver, wherein said first processor determines motion characteristics of said movable object,(b3) an output display connected to said first processor, and(b4) an input keypad connected to said first processor.
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0 Petitions
Accused Products
Abstract
A device for measuring the time of flight, speed, and trajectory height of a projectile, such as a baseball, football, hockey puck, or model rocket, or the time and speed of swing of a movable object, such as a baseball bat or golf club. Part of the device, called the object unit, is embedded, secured, or attached to the projectile or movable object of interest, and consists of an acceleration sensor, threshold circuit, and a radio transmitter. The other part of the device, called the monitor unit, is held or worn by the user and serves as the user interface for the device. The monitor unit has a radio receiver, a processor, an input keypad, and a display that shows the various measured motion characteristics of the projectile or movable object, such as distance, time of flight, speed, and trajectory height, and allows the user to input data to the device.
281 Citations
42 Claims
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1. A measuring device comprising:
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(a) an object unit secured to a movable object, said object unit comprising (a1) an acceleration sensor that detects an acceleration event of said movable object, (a2) a threshold circuit connected to said acceleration sensor, and (a3) a first radio transmitter connected to said threshold circuit; and (b) a monitor unit external to said object unit comprising (b1) a first radio receiver wherein said object unit communicates with said monitor unit by sending from said radio transmitter at least one radio signal to said first radio receiver, (b2) a first processor connected to said first radio receiver, wherein said first processor determines motion characteristics of said movable object, (b3) an output display connected to said first processor, and (b4) an input keypad connected to said first processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for measuring a movable object comprising the following steps:
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(a) receiving a distance between two points wherein motion characteristics of a movable object moving between said two points are desired to be measured; (b) detecting a first acceleration event of said movable object utilizing an acceleration sensor secured to said movable object; (c) determining a first time for said first acceleration event; (d) detecting a second acceleration event of said movable object utilizing said acceleration sensor secured to said movable object; (e) determining a second time for said second acceleration event; (f) subtracting said first time from said second time to determine the elapsed time; and (g) calculating the speed of said movable object by dividing said distance by said elapsed time. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification