System, method and apparatus for measuring walking and running distance
First Claim
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1. An electronic pedometer to measure stride length of a user comprising:
- a first unit associated with a first foot of the user including a pressure sensitive switch and a sound wave generator;
a second unit associated with a second foot of the user including a pressure sensitive switch and a sound wave receiver;
a processor to process sensed signals from each said pressure sensitive switch and said sound wave generator, said processor being programmed to count each activation of said pressure sensitive switches and to determine a point of maximum signal strength received from said sound wave generator, and said processor being programmed to calculate a distance between the point of sensed maximum signal strength and said sound wave receiver, and a distance between activation of the pressure sensitive switch of said first unit and a last activation of the pressure sensitive switch of said second unit to thereby calculate stride length.
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Abstract
An electronic pedometer to accurately measure stride length of a walker includes a processing unit with an ultrasonic sound wave receiver attached to one foot and an ultrasonic sound wave generator attached to the other foot. Pressure sensitive switches close when each foot makes a step, providing signals to the processing unit to record the number of strides. The processing unit computes stride length by calculating distances using the ultrasonic sound waves.
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Citations
19 Claims
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1. An electronic pedometer to measure stride length of a user comprising:
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a first unit associated with a first foot of the user including a pressure sensitive switch and a sound wave generator;
a second unit associated with a second foot of the user including a pressure sensitive switch and a sound wave receiver;
a processor to process sensed signals from each said pressure sensitive switch and said sound wave generator, said processor being programmed to count each activation of said pressure sensitive switches and to determine a point of maximum signal strength received from said sound wave generator, and said processor being programmed to calculate a distance between the point of sensed maximum signal strength and said sound wave receiver, and a distance between activation of the pressure sensitive switch of said first unit and a last activation of the pressure sensitive switch of said second unit to thereby calculate stride length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for measuring a distance traveled by a user, said method comprising the steps of:
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sensing each time a foot of said user contacts a surface;
emitting a signal from a signal emitter associated with one foot of the user, wherein said emitted signal is an ultrasonic sound wave;
receiving the emitted signal in a signal sensor associated with the second foot of the user;
processing signals representative of each surface contact and said emitted signal in a processor, wherein said, processor senses an amplitude of said emitted signal; and
calculating a stride length of the user based on said emitted signal and said surface contact. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A system for measuring a distance traveled, said system comprising:
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an emitter for emitting a signal associated with one foot of a user;
a signal sensor associated with the second foot of the user for receiving the emitted signal; and
a processor for processing signals, including emitted signals, wherein the emitted signals are representative of each surface contact and wherein said processor;
is alerted each time a foot of the user contacts a surface, calculates a stride length of the user using said emitted signal, and determines a point of maximum signal strength received from said emitter. - View Dependent Claims (17)
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18. A system for measuring a distance traveled, said system comprising:
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an emitter for emitting a signal associated with one foot of a user;
a signal sensor associated with the second foot of the user for receiving the emitted signal;
a processor for processing signals representative of said emitted signal, wherein said processor calculates a stride length of the user using said emitted signal; and
a sensor for sensing a temperature. - View Dependent Claims (19)
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Specification