Dual-Gyroscope Azimuth Measurement for Vertical Rotation Correction
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Solution Overview
Problem
Existing azimuth measurement devices inaccurately calculate azimuth when they rotate around the vertical axis due to deviation of the detection axis of the angular velocity sensor from the reference value.
Innovation Solution
Incorporating a first angular velocity sensor with a horizontal detection axis and a second angular velocity sensor with a vertical detection axis to correct the rotation angle of the first detection axis using a rotation mechanism, allowing for accurate azimuth measurement by integrating the second angular velocity to adjust the rotation angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single angular velocity sensor is used for azimuth measurement, then the device structure is simple, but measurement accuracy deteriorates when the device rotates around the vertical axis during measurement
Solution Approach 1:
The angular velocity sensing function is segmented into two independent sensors: a first angular velocity sensor for detecting horizontal angular velocity along the detection axis, and a second angular velocity sensor for detecting vertical angular velocity. This segmentation allows each sensor to specialize in detecting specific components of rotational motion, thereby improving measurement accuracy while maintaining reasonable system complexity
Solution Approach 2:
The second angular velocity sensor acts as an intermediary that detects vertical axis rotation and provides correction information to compensate for deviations in the first angular velocity sensor's measurements. This intermediary sensor enables the system to correct for unwanted rotations and maintain accurate azimuth measurement even when the device undergoes vertical axis rotation
2Adaptability or versatility
If the detection axis rotates around the vertical axis during measurement, then the device can adapt to movement, but the rotation angle deviates from reference value causing measurement error
Solution Approach 1:
The system implements feedback by using the second angular velocity sensor to continuously monitor vertical axis rotation and generate correction signals. These correction signals are fed back to adjust the rotation angle measurements from the first sensor, compensating for deviations caused by unwanted vertical axis rotation and maintaining measurement accuracy throughout the measurement process
Solution Approach 2:
The system dynamically adjusts the measurement process by continuously correcting the rotation angle based on real-time detection from the second angular velocity sensor. This dynamic correction mechanism allows the system to maintain measurement accuracy despite continuous movement and rotation during the azimuth measurement process
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
The solution enhances the accuracy of azimuth measurement by correcting rotation angle errors caused by vertical axis rotation, ensuring precise azimuth determination.
Implementation Method 1
a first angular velocity sensor (11) having a first detection axis (11D) extending in a horizontal direction and configured to detect a first angular velocity around the first detection axis (11D) serving as a rotation center
Implementation Method 2
a second angular velocity sensor (12) to be used to correct a rotation angle of the first detection axis (11D) in the rotation mechanism (13). The second angular velocity sensor (12) has a second detection axis (12D) extending in the vertical direction and is configured to detect a second angular velocity around the second detection axis (12D) serving as a rotation center
Data Source
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AI summary
An azimuth measurement device (1) includes a first angular velocity sensor (11), a rotation mechanism (13), and a second angular velocity sensor (12). The first angular velocity sensor (11) has a first detection axis (11D) extending in a horizontal direction and is configured to detect a first angular velocity around the first detection axis (11D) serving as a rotation center. The rotation mechanism (13) has a rotation axis (13R) extending in a vertical direction and is configured to rotate the first detection axis (11D) of the first angular velocity sensor (11) around the rotation axis (13R) serving as a rotation center. The second angular velocity sensor (12) is used to correct a rotation angle (α) of the first detection axis (11D) in the rotation mechanism (13). The second angular velocity sensor (12) has a second detection axis (12D) extending in the vertical direction and is configured to detect a second angular velocity around the second detection axis (12D) serving as a rotation center.