Joystick Optical Chamber Sensing for Press-Shift Differentiation
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Solution Overview
Problem
Conventional mechanical joysticks are limited by mechanical fatigue due to restricted operation gestures and fail to distinguish between edge pressing and lateral shifting operations, leading to inefficient control command output.
Innovation Solution
A joystick design incorporating a first and second structural component forming a chamber with a light emitter and optical sensor, where the processor analyzes the intensity distribution of illuminated surfaces to differentiate between oblique pressing and lateral shifting operations by projecting and capturing luminous regions and identification spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional mechanical joystick structure is used, then the device is simple and reliable, but it cannot distinguish between edge pressing and lateral shifting operations
Solution Approach 1:
The patent replaces the conventional mechanical detection system with an optical detection system. A light emitter projects luminous regions onto the second structural component, and an optical sensor captures the reflected light to generate images. The processor analyzes these images to detect operation types, substituting mechanical sensors with an optical measurement system that can distinguish between edge pressing and lateral shifting operations.
Solution Approach 2:
The patent introduces an identification element (such as a reflective pattern or marker) on the second structural component as an intermediary for optical detection. This identification element reflects light from the light emitter back to the optical sensor, creating distinct image patterns that enable the processor to differentiate between different operation types without direct mechanical contact.
2Adaptability or versatility
If limited operation gestures are provided, then the mechanical structure is simple, but mechanical fatigue occurs due to long-term usage
Solution Approach 1:
The patent replaces the mechanical lever arm and trackball system with a resilient structure combined with optical detection. The resilient structure allows for more varied operation gestures (edge pressing, lateral shifting, rotational movements) while the optical sensor system detects these gestures without mechanical wear, eliminating mechanical fatigue from long-term usage.
Solution Approach 2:
The patent transitions from a rigid mechanical structure with fixed movement directions to a dynamic resilient structure that can respond to multiple types of user inputs. The resilient structure can deform in various ways (compression, shear, rotation) and the optical detection system captures these dynamic changes, enabling diverse operation gestures without mechanical constraints.
3Measurement precision
If light emitter and optical sensor are added to distinguish operations, then operation detection accuracy improves, but device complexity increases
Solution Approach 1:
The patent integrates the light emitter, optical sensor, and processor into a unified detection system within the joystick housing. The light emitter and optical sensor are positioned to work together with the identification element on the second structural component, creating a compact optical detection assembly that differentiates between operation types through image analysis rather than multiple separate mechanical sensors.
Solution Approach 2:
The patent uses optical imaging to create a visual copy or representation of the second structural component's state. The optical sensor captures an image of the identification element, and the processor analyzes this optical copy to determine operation type, replacing the need for multiple physical mechanical switches or sensors with a single optical detection system.
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 precise differentiation between oblique pressing and lateral shifting, reducing mechanical fatigue and enhancing control command accuracy through the analysis of luminous region and identification spot distributions.
Implementation Method 1
The light emitter is disposed inside the chamber for illuminating one surface of the second structural component
Implementation Method 2
The optical sensor is disposed inside the chamber for capturing the illuminated surface of the second structural component
Data Source
AI summary
A joystick includes a first structural component, a second structural component, a light emitter, an optical sensor and a processor. The second structural component is assembled with the first structural component to form a chamber. The light emitter is disposed inside the chamber for illuminating one surface of the second structural component. The optical sensor is disposed inside the chamber for capturing the illuminated surface of the second structural component. The processor is electrically connected to the optical sensor and adapted to analyze an intensity distribution of the illuminated surface for determining if the joystick is obliquely pressed or laterally shifted in a relative manner.