Sensor Array Calibration via Multi-Pair Position Verification
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Solution Overview
Problem
Existing positioning systems face challenges in verifying the accuracy of calibrated sensor positions, leading to potential inaccuracies in determining the position of target objects, as current calibration methods lack a reliable verification process.
Innovation Solution
The proposed solution involves processing measurements from different combinations of sensors in a sensor array to ensure that calculated positions of a target object match within an acceptable threshold, allowing for the verification and potential adjustment of calibrated sensor positions, thereby ensuring accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor positions are calibrated using traditional surveying methods, then calibration can be performed, but it is difficult to verify if the calibrated positions are actually accurate
Solution Approach 1:
The system calculates target positions using multiple different combinations of sensors and compares these calculated positions to each other. If the positions from different sensor combinations agree within a threshold, this feedback confirms the accuracy of the calibrated sensor positions. This self-verification feedback mechanism resolves the contradiction by providing a way to verify calibration accuracy without external surveying.
Solution Approach 2:
The positioning system performs its own calibration verification using its existing sensors and calculation capabilities. Instead of requiring external surveying equipment or methods, the system uses multiple sensor combinations to mutually verify each other's measurements, making the verification process self-contained and eliminating the need for separate verification tools.
2Measurement precision
If multiple sensor combinations are used to calculate target positions for verification, then calibration accuracy can be verified, but the calculation complexity increases
Solution Approach 1:
The verification process is segmented into multiple independent calculations, where each sensor combination independently calculates a target position. These segmented calculations are then compared to each other. This segmentation allows the complex verification task to be broken down into manageable, independent computational units that can be processed systematically.
Data Source
AI summary
Systems and methods for calibrating sensor arrays. An exemplary system measures a distance to a target object with the sensors. The system calculates a first position of the target object based on measurements from a first pair of the sensors and calibrated sensor coordinates for the first pair, calculates a second position of the target object based on measurements from a second pair of the sensors and the calibrated sensor coordinates for the second pair, and calculates a third position of the target object based on measurements from a third pair of the sensors and the calibrated sensor coordinates for the third pair. The system then compares the first position, the second position, and the third position calculated for the target object, and determines that the calibrated sensor coordinates for one or more of the sensors are inaccurate if a difference between the first, second, and third positions exceeds a threshold.