Outdoor computer
First Claim
1. A method for implementing a weather alarm in an outdoor computer, in which methodatmospheric-pressure data is defined repeatedly,altitude data is defined repeatedly and essentially simultaneously with the atmospheric-pressure data, with the aid of a satellite positioning system, and both measured variables are converted into the same measurement unit, either pressure or altitude,characterized in thatthe difference between the converted variables is determined and is stored as a reference value,the difference between the converted variables is repeatedly monitored, andwhen the difference changes by more than a preset limit-value relative to the reference value, a weather alarm is given.
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Accused Products
Abstract
A method for implementing a weather alarm in an outdoor computer includes defining atmospheric-pressure data repeatedly, defining altitude data repeatedly and essentially simultaneously with the atmospheric-pressure data, with the aid of a satellite positioning system, and converting both measured variables into the same measurement unit, either pressure or altitude. The difference between the converted variables is determined and is stored as a reference value, the difference between the converted variables is repeatedly monitored, and when the difference changes by more than a preset limit-value relative to the reference value, a weather alarm is given. Also an apparatus for performing the method.
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Citations
18 Claims
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1. A method for implementing a weather alarm in an outdoor computer, in which method
atmospheric-pressure data is defined repeatedly, altitude data is defined repeatedly and essentially simultaneously with the atmospheric-pressure data, with the aid of a satellite positioning system, and both measured variables are converted into the same measurement unit, either pressure or altitude, characterized in that the difference between the converted variables is determined and is stored as a reference value, the difference between the converted variables is repeatedly monitored, and when the difference changes by more than a preset limit-value relative to the reference value, a weather alarm is given.
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6. An apparatus for implementing a weather alarm in an outdoor computer, which apparatus includes
measuring means for repeatedly determining the atmospheric-pressure data, means for determining the altitude data repeatedly and essentially simultaneously with the atmospheric-pressure data, with the aid of a satellite positioning system, and conversion means for converting both measured variables into the same measurement unit, either pressure or altitude, characterized in that the apparatus includes means for determining the difference between the converted variables and storing means for storing the difference as a reference value, monitoring means for monitoring the difference of the converted variables, and alarm means for giving an alarm if the difference changes by more than the preset limit-value relative to the reference value.
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10. A method for implementing a weather alarm in an outdoor computer comprising the steps of:
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determining first data comprising a first one of atmospheric pressure data and altitude data at a time t1 and at a first plurality of times after time t1, the first data being expressed in first units; determining second data comprising the other one of atmospheric pressure data and altitude data at time t1 and at a second plurality of times after time t1, the second plurality of times corresponding to the first plurality of times, the second data being expressed in second units; said step of determining first data or said step of determining second data comprising a step of obtaining data from a satellite position measurement system; converting the second data into first units; determining and storing a difference between the first data and the converted second data at t1 as a reference value; setting a limit-value based on the reference value; monitoring a difference between the first data and the converted second data at the second plurality of times; and giving a weather alarm when the difference between the first data and converted second data varies from the reference value by more than the limit-value. - View Dependent Claims (11, 12, 13, 14)
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15. An apparatus for implementing a weather alarm in an outdoor computer comprising:
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first determining means for determining first data comprising a first one of atmospheric pressure data and altitude data at a time t1 and at a first plurality of times after time t1, the first data being expressed in first units; second determining means for determining second data comprising the other one of atmospheric pressure data and altitude data at time t1 and at a second plurality of times after time t1, the second plurality of times corresponding to the first plurality of times, the second data being expressed in second units; one of said first determining means and said second determining means comprising a satellite position measurement system; converting means for converting the second data into first units; third means for determining and storing a difference between the first data and the converted second data at time t1 as a reference value; monitoring means for monitoring a difference between the first data and the converted second data at the second plurality of times; limiting means for setting a limit-value based on the reference value; and alarm means for giving a weather alarm when the difference between the first data and converted second data varies from the reference value by more than the limit-value. - View Dependent Claims (16, 17)
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18. An apparatus for implementing a weather alarm in an outdoor computer comprising:
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a pressure measurement unit for determining atmospheric pressure data at a time t1 and at a first plurality of times after time t1, the atmospheric pressure data comprising first data expressed in first units; a satellite positioning unit for determining altitude data at time t1 and at a second plurality of times after time t1, the second plurality of times corresponding to the first plurality of times, the altitude data comprising second data expressed in second units; a memory; an alarm; and a processor for converting the second data into first units or the first data into second units, determining a difference between the first data and the second data at time t1 as a reference value, storing the reference value in the memory, setting a limit-value based on the reference value, monitoring a difference between the first data and the converted second data at the second plurality of times, and actuating the alarm when the difference between the first data and second data varies from the reference value by more than the limit-value.
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Specification