Single Total Station for Construction Machine Position and Attitude Detection
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Solution Overview
Problem
Current control systems for construction machines require multiple total stations and prisms for accurate position and attitude detection, leading to lengthy setup operations and poor workability due to the need for precise machine setting and confirmation of each total station's line of sight.
Innovation Solution
A control system utilizing a single measuring instrument with a distance measuring unit, optical axis deflecting unit, and measurement control unit that alternately sights and measures multiple targets by time division, allowing for the detection of a construction machine's position and attitude using three-dimensional positions of targets and a tilt sensor, thereby reducing the number of required instruments and improving setup efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple total stations are used for accurate position and attitude detection, then measurement precision is improved, but device complexity and setup time increase
Solution Approach 1:
The patent combines multiple measuring functions (distance measurement, angle measurement, and multiple target observation) into a single total station system. The total station sequentially observes multiple targets (first target and second target) and integrates the data to calculate both position and attitude information, eliminating the need for multiple separate instruments while maintaining measurement accuracy.
Solution Approach 2:
The total station is designed to perform multiple functions: it measures distances to and angles of multiple different targets, calculates three-dimensional positions of these targets, and derives both position and attitude information from this data. This multi-functional capability replaces what previously required multiple specialized instruments.
2Measurement precision
If multiple total stations are used for accurate detection, then measurement precision is improved, but loss of time during setup operation increases
Solution Approach 1:
By consolidating multiple measurement tasks into a single total station, the setup time is dramatically reduced. Instead of setting up and calibrating multiple instruments and their inter-positional relationships, only one instrument needs to be set up, eliminating the time-consuming coordination and setup procedures while still achieving accurate position and attitude detection through sequential observation of multiple targets.
3Measurement precision
If each total station sights different prisms, then measurement precision is improved, but ease of operation deteriorates due to confirmation requirements
Solution Approach 1:
The total station is designed to observe multiple targets sequentially, automatically managing the sighting process. The system calculates three-dimensional positions of multiple targets and derives attitude information without requiring operators to manually confirm sighting relationships, significantly improving ease of operation while maintaining the ability to accurately detect multiple targets.
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
This solution enables a single measuring instrument to suffice for multiple targets, reducing system costs, setup time, and improving workability by allowing real-time control of construction machines with enhanced accuracy and speed.
Implementation Method 1
a distance measuring unit for projecting a distance measuring light, receiving a reflected distance measuring light and performing a distance measurement
Implementation Method 2
an optical axis deflecting unit provided in a common optical path of the distance measuring light and the reflected distance measuring light and for deflecting the optical axes of the distance measuring light and the reflected distance measuring light at the same deflecting angle in the same direction
Data Source
AI summary
The invention provides a control system for a construction machine comprises a construction machine and a measuring instrument, wherein the construction machine comprises at least two targets, a tilt detecting component, a driving unit, a machine control unit and a machine communication unit, wherein the measuring instrument comprises a distance measuring unit, an optical axis deflecting unit for deflecting the optical axes, a projecting direction detecting unit for detecting a deflection angle and a deflecting direction and a measurement control unit for determining a measuring point and transmitting a measurement result, wherein the measurement control unit allows the distance measuring unit to alternately measure the targets and calculates a direction and front-back and left-right tilts of the construction machine based on three-dimensional positions of the targets and a detection result of the tilt detecting component, and the machine control unit controls the driving unit based on a calculation result.