Altitude Calculation Using Way Point Calibration
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Solution Overview
Problem
Existing barometric altimeters require frequent calibration and large geography data storage to accurately calculate altitude, especially in varying weather conditions, leading to increased data storage needs and potential errors.
Innovation Solution
An electronic device equipped with a barometric pressure sensor, GPS receiver, and storage unit that calculates altitude using detected barometric pressure, GPS position, and pre-stored way point data, minimizing data storage requirements and improving accuracy by selecting the closest or averaging multiple way points for altitude calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If geography data covering the destination region is stored to perform calibration, then altitude measurement accuracy is improved, but data storage requirements increase
Solution Approach 1:
The patent applies local quality by storing only way point data (specific location information with altitude) rather than comprehensive geography data covering the entire destination region. This selective storage of locally relevant calibration points maintains altitude measurement accuracy while significantly reducing data storage requirements.
Solution Approach 2:
The patent extracts only the essential calibration information (way point coordinates and altitude) from the broader geography data context. By taking out only the necessary way point data needed for calibration and altitude calculation, the system achieves accurate altitude measurement without storing unnecessary geographical information.
2Reliability
If comprehensive geography data is stored for calibration, then calibration accuracy is improved, but device complexity increases
Solution Approach 1:
The patent simplifies device complexity by implementing a streamlined calibration approach that uses only way point data. This localized calibration method focuses on specific known altitude points rather than managing comprehensive geography data, reducing the complexity of data management while maintaining calibration accuracy.
Solution Approach 2:
The patent extracts only the critical calibration elements (way point positions and altitudes) from the full geography data set. This extraction simplifies the calibration process and reduces device complexity by eliminating the need to manage, process, and store large volumes of detailed geographical information.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces data storage needs, enhances altitude calculation accuracy, and extends battery life by performing calibration based on pre-stored way point data, allowing for precise altitude determination without frequent user input or network connections.
Implementation Method 1
a barometric pressure sensor detecting a barometric pressure... calculating an altitude by using the barometric pressure... based on the fact that the atmospheric air pressure is low as an elevation of a spot becomes higher
Data Source
AI summary
An electronic device includes a barometric pressure sensor detecting a barometric pressure; a GPS sensor receiving a positioning signal from a positioning satellite; a storage unit storing a position of a way point which is a candidate of a spot used by a user and an altitude of the way point; and a processing unit calculating an altitude by using the barometric pressure, the position calculated on the basis of the positioning signal, and the position of the way point and the altitude of the way point stored in the storage unit.