Device for recording descent data for skydiving
First Claim
1. A device for recording descent data for successive skydiving jumps, comprising:
- a pressure transducer for providing a pressure signal signifying ambient pressure;
a display means for displaying descent data; and
a processing means coupled to said display means and said pressure transducer, including;
trigger means for sensing a rate of change in the pressure signal from said pressure transducer and for providing a trigger signal in response to the rate of change of the pressure signal crossing a predetermined threshold; and
recording means for recording for each jump in response to the trigger signal an altitude datum corresponding to the pressure signal, each altitude datum being held for at least a predetermined number of succeeding jumps for subsequent display on said display means.
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Abstract
This device can record descent data for successive skydiving jumps with a pressure transducer for providing a pressure signal signifying ambient pressure. The device also has a processor coupled to the pressure transducer for displaying descent data on a display. The processor has a triggering routine and a recording routine. The triggering routine can provide a trigger signal in response to predetermined changes in the pressure signal from the pressure transducer. The recording routine can record for each jump in response to the trigger signal, a datum corresponding to the pressure signal. Each datum is held for at least a predetermined number of succeeding jumps. A temperature sensor coupled to the processor can provide a temperature signal signifying ambient temperature. The processor can display through the display, altitude signals derived from the pressure signal and adjusted by the temperature signal. The process of recording includes detecting predetermined changes in the pressure signal from the pressure transducer to provide a trigger signal. The procedure also includes recording for each jump in response to the trigger signal a datum corresponding to the pressure signal and holding each datum for at least a predetermined number of succeeding jumps.
178 Citations
46 Claims
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1. A device for recording descent data for successive skydiving jumps, comprising:
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a pressure transducer for providing a pressure signal signifying ambient pressure; a display means for displaying descent data; and a processing means coupled to said display means and said pressure transducer, including; trigger means for sensing a rate of change in the pressure signal from said pressure transducer and for providing a trigger signal in response to the rate of change of the pressure signal crossing a predetermined threshold; and recording means for recording for each jump in response to the trigger signal an altitude datum corresponding to the pressure signal, each altitude datum being held for at least a predetermined number of succeeding jumps for subsequent display on said display means. - 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, 24, 25, 26, 27, 28)
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29. A method for recording descent data for successive skydiving jumps, with an ambient pressure transducer, comprising the steps of:
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detecting rates of change in the pressure signal from said pressure transducer to provide a trigger signal in response to the rate of change of the pressure signal crossing a predetermined threshold; recording for each jump in response to the trigger signal an altitude datum corresponding to the pressure signal; holding each altitude datum for at least a predetermined number of succeeding jumps; and subsequently displaying the altitude datum from at least one of said jumps. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification