METHOD AND SYSTEM FOR DETERMINING WHETHER TO RESET A HEIGHT IN A HEIGHT DETERMINING DEVICE BASED ON THE OCCURRENCE OF STEPS
First Claim
1. A height determination device, comprising a pressure measuring sensor, a motion sensor, and a processor configured for running a method to reset a height above ground level value, the method comprising the steps:
- monitoring barometric pressure sensor data from the pressure measuring sensor to determine a change in height of the device;
monitoring the motion sensor to determine whether speed of the device is less than a predetermine speed value;
determining whether the height determining device is in a vehicle based on at least one of the monitoring barometric sensor data and the monitoring the motion sensor; and
resetting the height above ground level value to zero.
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Accused Products
Abstract
A filter processes acceleration magnitude signals from an accelerometer device to output spectral content related to walking and running. A device containing the accelerometer determines steps by qualitatively analyzing the processed acceleration signals to determine whether increased acceleration magnitude results from a step impact from running or walking activity. The device may analyze the acceleration signals to determine crossings of an axis at zero magnitude, which crossings typically correspond to a person'"'"'s foot impacting the ground, and may analyze the period, between the zero crossings. The step count can indicate whether the device, in a height determination mode, is moving in a vehicle; if analysis of accelerometer signals indicates no stepping or running, but another circuit of the device indicates rapid movement, the device assumes it is moving in a vehicle, and resets a height above ground value to zero upon determining resumption of walking or running activity.
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Citations
20 Claims
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1. A height determination device, comprising a pressure measuring sensor, a motion sensor, and a processor configured for running a method to reset a height above ground level value, the method comprising the steps:
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monitoring barometric pressure sensor data from the pressure measuring sensor to determine a change in height of the device; monitoring the motion sensor to determine whether speed of the device is less than a predetermine speed value; determining whether the height determining device is in a vehicle based on at least one of the monitoring barometric sensor data and the monitoring the motion sensor; and resetting the height above ground level value to zero. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method running in a height determination device, the device comprising a pressure measuring sensor, a motion sensor, and a processor configured for running a method to reset a height above ground level value, the method comprising the steps:
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monitoring barometric pressure sensor data from the pressure measuring sensor to determine a change in height of the device; monitoring the motion sensor to determine whether speed of the device is less than a predetermine speed value; in determining whether the height determining device is in a vehicle based on at least one of the monitoring barometric sensor data and the monitoring the motion sensor; and resetting the height above ground level value to zero. - View Dependent Claims (11, 12, 13, 14)
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15. A height determination device, comprising a pressure measuring sensor and a processor configured for running a method to reset a height above ground level value, the method comprising the steps:
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monitoring barometric pressure sensor data from the pressure measuring sensor to determine change in height of the device; determining whether the height determining device is in a vehicle based on the monitoring barometric pressure sensor data; and resetting the height above ground level value to zero. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification