Motor Angle Sensing Assembly for Precise Pan-Tilt Attitude Control
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Solution Overview
Problem
There is a need for more precise control over the rotation angle of motors in pan-tilt camera systems to enhance surveillance area switching, as existing methods lack accuracy in detecting motor rotation angles.
Innovation Solution
An attitude adjustment apparatus and method utilizing a sensing assembly that generates and senses changes in a magnetic field, allowing a processor to determine the rotation angle of a motor based on sensor data from blades altering the magnetic field, enabling precise control of motor rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a hall sensor is used to detect the rotation angle of the motor, then the rotation angle can be sensed, but the detection precision is insufficient for precise control requirements
Solution Approach 1:
The patent replaces the traditional hall sensor-based magnetic field detection method with a magnetic field sensing assembly that uses a magnet and sensor to detect blade positions. This substitution enables more precise rotation angle measurement by directly sensing the magnetic field changes caused by blade movements, thereby resolving the contradiction between measurement precision and control reliability.
Solution Approach 2:
The patent introduces blades as intermediary elements that physically interact with the magnetic field. The blades are positioned to interrupt or modify the magnetic field generated by the magnet, creating detectable changes that correspond to specific rotation angles. This intermediary mechanism enables precise angle detection without relying on traditional hall sensors.
2Measurement precision
If traditional magnetic field sensing methods are used, then rotation can be detected, but computational complexity increases
Solution Approach 1:
The patent segments the rotation detection into discrete blade positions. Each blade corresponds to a specific angular position, and the system detects which blade is currently interrupting the magnetic field. This segmentation approach simplifies computation by converting continuous angle measurement into discrete position identification, reducing computational complexity while maintaining precision.
Solution Approach 2:
The magnetic field sensing assembly is integrated directly into the motor structure, with the magnet and sensor positioned to automatically detect blade positions during rotation. The system uses its own operational movement (blade rotation) to generate the detection signal, eliminating the need for separate complex measurement systems and reducing overall computational requirements.
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 approach allows for accurate and efficient adjustment of camera attitudes with reduced computational effort, improving the precision and reliability of surveillance area switching in pan-tilt systems.
Implementation Method 1
a sensing assembly configured to generate a magnetic field, sense changes in the magnetic field
Data Source
AI summary
An attitude adjustment apparatus includes a driving device comprising a motor configured to generate a driving force; and a control device comprising at least one processor configured to adjust an attitude of a target object based on a rotation angle of the motor, wherein the driving device further comprises: a sensing assembly configured to generate a magnetic field, sense changes in the magnetic field and output, to the at least one processor, sensing result data based on the changes in the magnetic field; and a target, which is rotated by the driving force of the motor, comprising a plurality of blades configured to alter the magnetic field generated by the sensing assembly, and wherein the at least one processor is further configured to determine the rotation angle of the motor based on a target rotation angle and the sensing result data.