Remote Control Device for Unmanned Helicopter Relative Positioning
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Solution Overview
Problem
Conventional remote control devices for unmanned helicopters require cumbersome steps to prepare and set flight area data, which is time-consuming and inflexible, especially in areas with varying topography.
Innovation Solution
A remote control device equipped with an orientation detector, speed information detector, distance detector, and controller that determines the relative position of the unmanned helicopter based on its flight orientation and integrated speed information, allowing it to fly without pre-set flight paths and enabling flexible operation over different topographies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If flight area data is pre-set using GPS receiver with absolute positions and altitudes registered at every end point, then the flight path can be accurately controlled, but the preparation and setting process becomes cumbersome and time-consuming
Solution Approach 1:
The system performs preliminary actions by automatically acquiring flight area data through the GPS receiver and computing relative positions before flight operations begin. The controller pre-calculates relative positions between multiple points in the flight area, storing them in advance so that no manual registration is needed during actual flight preparation, thus reducing preparation time while maintaining accuracy
Solution Approach 2:
Instead of using absolute positions and altitudes directly from GPS, the system creates a copied reference system by establishing relative positions between multiple points. The controller computes relative position data (distance and bearing) between points in the flight area, creating a simplified reference model that is easier to process and use during flight control, thereby reducing the complexity and time of data preparation
2Area of stationary object
If absolute positions and altitudes are registered at every end point along the flight area circumference, then complete flight area coverage is achieved, but the operation becomes complex and requires multiple registration steps
Solution Approach 1:
The system replaces manual mechanical registration operations with automated electronic computation. The GPS receiver automatically acquires position data, and the controller automatically computes relative positions between all points in the flight area based on these GPS coordinates, eliminating the need for manual point-by-point registration and significantly reducing operational complexity
Solution Approach 2:
The controller serves multiple functions: it not only controls the unmanned helicopter but also automatically computes relative positions between all flight area points, stores this data, and uses it for navigation. This multi-functionality consolidates what would otherwise require separate systems into one integrated unit, reducing operational steps and complexity
3Measurement precision
If flight paths are pre-configured with detailed route information, then navigation accuracy is improved, but the system loses flexibility when operating over areas with different topography
Solution Approach 1:
The system uses dynamic relative position data that can be easily recalculated for different flight areas. Instead of fixed pre-configured paths, the controller dynamically computes relative positions between points based on GPS coordinates, allowing the same system to adapt to various topographies by simply re-acquiring GPS data and recalculating relative positions, thus maintaining both accuracy and flexibility
Solution Approach 2:
The system changes the parameter basis from absolute coordinates to relative positions. By storing and using relative position data (distance and bearing between points) rather than fixed absolute paths, the system can maintain navigation accuracy while adapting to different topographies - the relative position relationships remain valid regardless of the specific geographic features of the flight area
Data Source
AI summary
A remote control device for an unmanned helicopter includes an orientation sensor that detects a flight orientation of the unmanned helicopter, a GPS antenna and a GPS receiver that detect speed information of the unmanned helicopter, and a CPU that detects a flight distance of the unmanned helicopter by integrating the speed information. A memory stores information concerning a base point of the unmanned helicopter. Based on a flight orientation of the unmanned helicopter and a flight distance of the unmanned helicopter, which is obtained by integration of the speed information, the CPU determines a relative position, which indicates a position of the unmanned helicopter with respect to the base point, and controls the flight of unmanned helicopter based on the relative position.