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Activity monitoring and directing system

  • US 9,668,041 B2
  • Filed: 03/18/2014
  • Issued: 05/30/2017
  • Est. Priority Date: 05/22/2013
  • Status: Active Grant
First Claim
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1. An apparatus for enhancing the experience of a swimmer in the water comprising:

  • a sensor;

    said sensor for providing an output; and

    an audio headset for a swimmer in the water;

    said audio headset for a swimmer in the water for receiving a stream of content;

    said audio headset for a swimmer in the water also for receiving said output from said sensor;

    said audio headset also including automatic gain control;

    said audio headset for a swimmer in the water including a computing device;

    said computing device including a processor and a non-volatile memory;

    said computing device also for converting said output from said sensor to audio information;

    said audio headset for a swimmer in the water, being worn by said swimmer, for providing a combination of said stream of content and audio information to said swimmer;

    a system communication module;

    said system communication module for sending signals with said audio headset;

    said system communication module also for sending interrupt audio messages to a swimmer in the water;

    said system communication module also for delivering multiple audio streams to said audio headset;

    said system communication module also for tracking stroke and body orientation changes of a swimmer in the water;

    said system communication module also for logging output from said sensor for evaluation in real time by a coach;

    said plurality of signals including a plurality of content channels in a frequency band that generally spans 100 to 250 KHz;

    said system communication module also for combining a plurality of ultrasonic communication links used generally simultaneously in the same swimming pool by a plurality of coaches;

    said system communication module also for enabling a coach to provide voice commands using a first content channel;

    said voice commands being conveyed through a first amplifier and a first low pass filter;

    said voice commands being modulated at a specific frequency using a modulator to produce a first unspread audio channel;

    said system communication module for producing a second content channel that is conveyed through a second amplifier a second low pass filter;

    said second content stream being modulated at a specific frequency using a modulator to produce a second unspread audio channel;

    said system communication module also for summing said plurality of content channels to produce a combined signal;

    said plurality of content channels being summed by a signal adder, and then added to a pilot frequency;

    said system communication module also for multiplying said combined signal by a pseudorandom number code, which produces spread spectrum signal;

    said system communication module also for adding an unspread pilot frequency signal to said combined signal to ease the process of signal tracking at said audio headset;

    said system communication module also for increasing the level of the combined signal using a third amplifier to produce a transmission signal before being transmitted to said headset via an omnidirectional hydrophone;

    said audio headset for receiving said transmission signal;

    said audio headset also for splitting said transmission signal into a plurality of channels that may be used by said swimmer;

    said sensor including a magnetometer for lap counting;

    said sensor further includinga plurality of magnetic sensors arranged in a mutually orthogonal configuration;

    a plurality of acceleration sensors in a mutually orthogonal configuration;

    said plurality of magnetic sensors and said plurality of acceleration sensors being used to count laps and to determine speed;

    said audio headset for receiving ultrasonic signals through water;

    said ultrasonic signal being propagated as a composite signal multiplied by a PN code to form a spread spectrum signal which mitigates multipath distortion;

    said ultrasonic signal including a pilot signal;

    said pilot signal being used to facilitate code and carrier acquisition in said headset to compensate for Doppler shift due to the motion of said swimmer;

    said ultrasonic signal being transmitted by said omnidirectional hydrophone with a wide radiation pattern to cover the pool underwater as uniformly as possible;

    a web portal;

    said system communication module also for distributing workouts through said web portal;

    said web portal for providing a connection to performance data for workouts and swim meet results.

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