Pressure measurement device with selective pressure threshold crossings accumulator
DCFirst Claim
1. A pressure threshold crossings accumulator for selectively accumulating relative pressure threshold crossings, comprising:
- computer means for receiving a first plurality of pressure signals representing a second plurality of pressures, and for selectively assigning a threshold flag value which both corresponds to a first pressure vector direction and indicates that a first pressure vector magnitude exceeds a first threshold, and further for providing a unit count when both a second pressure vector magnitude exceeds a second threshold and a second pressure vector direction opposes said first pressure vector direction, wherein said first pressure vector direction and magnitude represent a first sign and magnitude, respectively, of a first pressure differential from a first pressure to a second pressure of said second plurality of pressures, and wherein said second pressure vector direction and magnitude represent a second sign and magnitude, respectively, of a second pressure differential from a third pressure to a fourth pressure of said second plurality of pressures; and
accumulator means coupled to said computer means for receiving and accumulating said unit count.
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Abstract
A pressure measurement device with a selective altitude threshold crossings accumulator and method therefor provides for selective accumulation of relative pressure thresholds. A pressure sensor measures atmospheric pressure and provides analog pressure signals representing measured atmospheric pressures. A digital-to-analog converter converts the analog pressure signals to digital pressure signals for a computer which then computes altitudes corresponding to the measured atmospheric pressures. The computer assigns a threshold flag value which corresponds to the relative direction (e.g. "up" or "down") from a first (e.g. lower) altitude to a second (e.g. higher) altitude when the magnitude of the first-to-second altitude differential exceeds a first threshold. The computer then generates a unit count when both the relative direction from the second altitude to a third (e.g. lower) altitude opposes the first-to-second altitude direction and the magnitude of the second-to-third altitude differential exceeds a second threshold. An accumulator accumulates the unit counts, and the accumulated count is displayed on a display device.
240 Citations
36 Claims
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1. A pressure threshold crossings accumulator for selectively accumulating relative pressure threshold crossings, comprising:
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computer means for receiving a first plurality of pressure signals representing a second plurality of pressures, and for selectively assigning a threshold flag value which both corresponds to a first pressure vector direction and indicates that a first pressure vector magnitude exceeds a first threshold, and further for providing a unit count when both a second pressure vector magnitude exceeds a second threshold and a second pressure vector direction opposes said first pressure vector direction, wherein said first pressure vector direction and magnitude represent a first sign and magnitude, respectively, of a first pressure differential from a first pressure to a second pressure of said second plurality of pressures, and wherein said second pressure vector direction and magnitude represent a second sign and magnitude, respectively, of a second pressure differential from a third pressure to a fourth pressure of said second plurality of pressures; and accumulator means coupled to said computer means for receiving and accumulating said unit count. - View Dependent Claims (2, 3, 4, 5)
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6. An altitude threshold crossings accumulator for selectively accumulating relative altitude threshold crossings, comprising:
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computer means for receiving a first plurality of pressure signals representing a second plurality of atmospheric pressures and in accordance therewith computing a third plurality of altitudes, and for selectively assigning a threshold flag value which both corresponds to a first altitude vector direction and indicates that a first altitude vector magnitude exceeds a first threshold, and further for providing a unit count when both a second altitude vector magnitude exceeds a second threshold and a second altitude vector direction opposes said first altitude vector direction, wherein said first altitude vector direction and magnitude represent a first direction and magnitude, respectively, of a first altitude differential from a first altitude to a second altitude of said third plurality of altitudes, and wherein said second altitude vector direction and magnitude represent a second direction and magnitude, respectively, of a second altitude differential from a third altitude to a fourth altitude of said third plurality of altitudes; and accumulator means coupled to said computer means for receiving and accumulating said unit count. - View Dependent Claims (7, 8, 9, 10)
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11. A pressure threshold crossings accumulation method for selectively accumulating relative pressure threshold crossings, comprising the steps of:
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receiving a first plurality of pressure signals representing a second plurality of pressures; selectively assigning a threshold flag value which both corresponds to a first pressure vector direction and indicates that a first pressure vector magnitude exceeds a first threshold, wherein said first pressure vector direction and magnitude represent a first sign and magnitude, respectively, of a first pressure differential from a first pressure to a second pressure of said second plurality of pressures; providing a unit count when both a second pressure vector magnitude exceeds a second threshold and a second pressure vector direction opposes said first pressure vector direction, wherein said second pressure vector direction and magnitude represent a second sign and magnitude, respectively, of a second pressure differential from a third pressure to a fourth pressure of said second plurality of pressures; and receiving and accumulating said unit count. - View Dependent Claims (12, 13, 14, 15)
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16. An altitude threshold crossings accumulation method for selectively accumulating relative altitude threshold crossings, comprising the steps of:
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receiving a first plurality of pressure signals representing a second plurality of atmospheric pressures and in accordance therewith computing a third plurality of altitudes; selectively assigning a threshold flag value which both corresponds to a first altitude vector direction and indicates that a first altitude vector magnitude exceeds a first threshold, wherein said first altitude vector direction and magnitude represent a first direction and magnitude, respectively, of a first altitude differential from a first altitude to a second altitude to a second altitude of said third plurality of altitudes; providing a unit count when both a second altitude vector magnitude exceeds a second threshold and a second altitude vector direction opposes said first altitude vector direction, wherein said second altitude vector direction and magnitude represent a second direction and magnitude, respectively, of a second altitude differential from a third altitude to a fourth altitude of said third plurality of altitudes; and receiving and accumulating said unit count. - View Dependent Claims (17, 18, 19, 20)
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21. A pressure threshold crossings accumulator for accumulating relative pressure threshold crossings, comprising:
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computer means for receiving a first plurality of pressure signals representing a second plurality of pressures, and for providing a first unit count when a first pressure vector magnitude in a first pressure vector direction exceeds a first threshold, and further for providing a second unit count when both a second pressure vector magnitude exceeds a second threshold and a second pressure vector direction opposes said first pressure vector direction, wherein said first pressure vector direction and magnitude represent a first sign and magnitude, respectively, of a first pressure differential from a first pressure to a second pressure of said second plurality of pressures, and wherein said second pressure vector direction and magnitude represent a second sign and magnitude, respectively, of a second pressure differential from a third pressure to a fourth pressure of said second plurality of pressures; and accumulator means coupled to said computer means for receiving and selectively accumulating said first and second unit counts. - View Dependent Claims (22, 23, 24)
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25. An altitude threshold crossings accumulator for accumulating relative altitude threshold crossings, comprising:
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computer means for receiving a first plurality of pressure signals representing a second plurality of atmospheric pressures and in accordance therewith computing a third plurality of altitudes, and for providing a first unit count when a first altitude vector magnitude in a first altitude vector direction exceeds a first threshold, and further for providing a second unit count when both a second altitude vector magnitude exceeds a second threshold and a second altitude vector direction opposes said first altitude vector direction, wherein said first altitude vector direction and magnitude represent a first direction and magnitude, respectively, of a first altitude differential from a first altitude to a second altitude of said third plurality of altitudes, and wherein said second altitude vector direction and magnitude represent a second direction and magnitude, respectively, of a second altitude differential from a third altitude to a fourth altitude of said third plurality of altitudes; and accumulator means coupled to said computer means for receiving and selectively accumulating said first and second unit counts. - View Dependent Claims (26, 27, 28)
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29. A pressure threshold crossings accumulation method for accumulating relative pressure threshold crossings, comprising the steps of:
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receiving a first plurality of pressure signals representing a second plurality of pressures; providing a first unit count when a first pressure vector magnitude in a first pressure vector direction exceeds a first threshold, wherein said first pressure vector direction and magnitude represent a first sign and magnitude, respectively, of a first pressure differential from a first pressure to a second pressure of said second plurality of pressures; providing a second unit count when both a second pressure vector magnitude exceeds a second threshold and a second pressure vector direction opposes said first pressure vector direction, wherein said second pressure vector direction and magnitude represent a second sign and magnitude, respectively, of a second pressure differential from a third pressure to a fourth pressure of said second plurality of pressures; and receiving and selectively accumulating said first and second unit counts. - View Dependent Claims (30, 31, 32)
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33. An altitude threshold crossings accumulation method for accumulating relative altitude threshold crossings, comprising the steps of:
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receiving a first plurality of pressure signals representing a second plurality of atmospheric pressures and in accordance therewith computing a third plurality of altitudes; providing a first unit count when a first altitude vector magnitude in a first altitude vector direction exceeds a first threshold, wherein said first altitude vector direction and magnitude represent a first direction and magnitude, respectively, of a first altitude differential from a first altitude to a second altitude of said third plurality of altitudes; providing a second unit count when both a second altitude vector magnitude exceeds a second threshold and a second altitude vector direction opposes said first altitude vector direction, wherein said second altitude vector direction and magnitude represent a second direction and magnitude, respectively, of a second altitude differential from a third altitude to a fourth altitude of said third plurality of altitudes; and receiving and selectively accumulating said first and second unit counts. - View Dependent Claims (34, 35, 36)
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Specification