Rover Tilt Correction via Electronic Attitude Detection
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Solution Overview
Problem
Conventional methods for ensuring the verticality of a rover during measurement, such as using a circular bubble tube or acceleration sensors, are cumbersome and lack accuracy due to temperature drift and insufficient sensor precision, making it difficult to achieve precise measurements.
Innovation Solution
A rover equipped with a measurement auxiliary apparatus featuring a horizontally rotatable detecting unit, motors, encoders, and an arithmetic processing component to detect and correct tilts in two axial directions, allowing for accurate measurement irrespective of the rover's tilt, using direction detecting devices like cameras or laser pointers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a circular bubble tube is used to detect verticality, then the operator can visually confirm the verticality of the rover, but the process becomes troublesome and workability deteriorates
Solution Approach 1:
The patent replaces the mechanical circular bubble tube system with an electronic attitude detection device that uses sensors (acceleration sensors, gyroscopes) and electronic processing to detect and display rover tilt information, eliminating the need for manual visual checking and improving ease of operation
Solution Approach 2:
The attitude detection device automatically detects and calculates the rover's tilt angle and direction without requiring operator intervention, providing real-time feedback that enables the rover to self-correct its orientation, thereby improving both workability and measurement precision
2Extent of automation
If an acceleration sensor is used to measure tilt, then automation is improved, but measurement accuracy deteriorates due to temperature drift and insufficient sensor precision
Solution Approach 1:
The patent combines multiple sensing technologies (acceleration sensors and gyroscopes) into an integrated attitude detection device, where the gyroscope data compensates for the temperature drift and precision limitations of acceleration sensors, achieving both automation and high measurement accuracy
Solution Approach 2:
The attitude detection device uses a composite sensing system that integrates different types of sensors with complementary characteristics, creating a hybrid system that overcomes the individual limitations of each sensor type and achieves superior overall performance in terms of both automation and precision
3Ease of operation
If the rover is tilted during measurement, then workability is improved, but measurement accuracy deteriorates due to deviation between the measurement position and the actual point
Solution Approach 1:
The patent implements a feedback mechanism where the attitude detection device continuously monitors the rover's tilt angle and direction, and this information is used to calculate and display the deviation from the vertical position, enabling real-time correction and ensuring measurement accuracy even when the rover is initially tilted
Solution Approach 2:
The system performs preliminary tilt detection and calculation before the actual measurement is taken, providing advance information about the deviation that allows the operator to correct the rover's orientation beforehand, thereby preventing measurement errors
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
Enables the rover to detect its own tilt and correct measurement deviations, ensuring accurate point measurement regardless of its orientation, thereby improving workability and measurement accuracy.
Implementation Method 1
a horizontal detecting unit which is supported so as to be rotatable around two shafts orthogonal to each other and detects the tilts in two axial directions
Implementation Method 2
encoders provided respectively on the shafts, and an arithmetic processing component for controlling the motors in such a manner that the horizontal detecting unit becomes horizontal based on a detection result from the horizontal detecting unit
Data Source
AI summary
The invention provides a rover, which comprises a pole of which lower end indicates a point to be measured, a measurement auxiliary apparatus provided at a predetermined position of the pole, a direction detecting device integrally provided with the measurement auxiliary apparatus and for detecting a direction of the measurement auxiliary apparatus, and an object to be measured provided at a known distance from the lower end of the pole,wherein the measurement auxiliary apparatus comprises a horizontal detecting unit which is supported so as to be rotatable around two shafts orthogonal to each other and detects the tilts in two axial directions, motors provided so as to rotate the shafts, encoders provided respectively on the shafts, and an arithmetic processing component for controlling the motors in such a manner that the horizontal detecting unit becomes horizontal based on a detection result from the horizontal detecting unit, wherein the encoders are configured to detect a rotation amount of each shaft in a case where the horizontal detecting unit becomes horizontal, and the arithmetic processing component is configured to calculate the tilts in the two axial directions based on the detection results from the encoders and to calculate a deviation of the object to be measured in two horizontal directions with respect to the point to be measured and a deviation in a vertical direction with respect to the known distance based on a calculation result, the known distance, and a tilting direction obtained from a direction detecting device.