UAV Camera Pan-Tilt Structure for Stable Low-Weight Imaging
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Solution Overview
Problem
Existing UAV pan-tilt servo systems are large, complex, high in cost, and prone to jitters, leading to unstable and unclear image capture due to their high weight, high failure rate, and reduced battery life, with mounting and positioning challenges.
Innovation Solution
A novel pan-tilt structure for UAV cameras featuring a compact design with a motor component directly assembled on the housing, a PCBA circuit board with integrated Hall element and magnet for position detection, and torsion springs for stable rotation, along with a software system for current overload protection and learning/repositioning functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional DC servos are used for pan-tilts, then image stability is improved, but the structure becomes complex and size increases
Solution Approach 1:
The patent combines the motor component, speed reduction device, position detection assembly, and control circuit into an integrated servo module. The motor component and position detection assembly are electrically connected to the PCBA circuit board within a single housing, merging multiple functional modules into one compact unit that reduces overall structural complexity while maintaining image stability
2Stability of the object's composition
If conventional DC servos are used for pan-tilts, then image stability is improved, but the size and weight increase
Solution Approach 1:
The patent employs a nested arrangement where the position detection assembly is positioned within the housing alongside the motor component, and the speed reduction device is integrated within the same housing. This nested configuration allows multiple components to occupy overlapping or adjacent spatial volumes, minimizing the overall footprint and weight of the pan-tilt mechanism while maintaining image stability
3Manufacturing precision
If three-axis pan-tilts are used, then mounting and positioning accuracy is improved, but the price and structure complexity increase
Solution Approach 1:
The patent extracts the essential pan-tilt functionality into a dedicated servo module with a motor component mounted in a positioning column hole of the housing. The motor component is directly mounted in the positioning column hole, and the output shaft extends through the housing to drive the camera mounting seat, achieving precise mounting and positioning without requiring complex three-axis mechanisms
4Manufacturing precision
If three-axis pan-tilts are used, then mounting and positioning accuracy is improved, but the weight increases
Solution Approach 1:
The patent replaces heavy mechanical three-axis pan-tilt mechanisms with a compact electric servo system. The motor component electrically driven system with integrated control circuitry replaces traditional mechanical linkages, gears, and balancing mechanisms, achieving precise mounting and positioning accuracy while significantly reducing the overall weight of the pan-tilt assembly
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 provides a lightweight, cost-effective, and stable pan-tilt mechanism that improves image clarity and mounting ease, achieving diverse rotation angles and reducing the risk of damage from overloads, while maintaining the performance of high-end three-axis systems.
Implementation Method 1
the position detection assembly includes the output shaft gear, a magnet and a Hall element; the Hall element is directly machined on the PCBA circuit board; when the output shaft gear drives the output shaft to move up or down, the magnet is allowed to move in a linear direction above the Hall element to realize position detection
Implementation Method 2
The first torsion springs are further sleeved outside the first steering shaft and are resisted against the second steering member and the first steering member, respectively; the second torsion springs are further sleeved outside the second steering shaft and are resisted against the housing and the second steering member, respectively
Data Source
AI summary
The present disclosure provides a novel pan-tilt structure for a camera of an UAV, comprising: a camera chip mounting seat, a steering mechanism, a housing, an output shaft, and a motor component, a PCBA circuit board, a speed reduction device and a position detection assembly which are all mounted in the housing; the steering mechanism is rotatably mounted on a steering mechanism mounting seat; the output shaft is located above the housing extending with a push rod; the steering mechanism connected to the push rod of the output shaft; the camera chip mounting seat is mounted at an end of the steering mechanism away from the steering mechanism mounting seat. The present disclosure realizes the miniaturization of a servo, the pan-tilt provided by the present disclosure is higher in rotation stability, more diversified in rotation angle, smaller in size, easy to mount and low in cost, and shoots clear pictures.