Optical Detecting Device Multi-Axis Gearshift Detection

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Solution Overview

Problem

Conventional optical detectors are limited to detecting rotation parameters of mouse rollers and lack the capability to expand their application to other adjusting mechanisms, such as multi-axis instruction outputting mechanisms, which restricts their functionality in mechanical design applications.

Innovation Solution

An optical detecting device with a multi-axis instruction outputting mechanism and an optical detecting module that analyzes the movement of a feature point on an actuating component, utilizing a reflecting signal to determine gearshift by varying the interval between the optical detecting module and the actuating component, and analyzing projective patterns or fringe patterns to interpret instructions across three-dimensional reciprocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the optical detecting module uses a single detection function for rotation parameters, then the device structure remains simple, but the application range is limited

Engineering Contradiction:
Improveapplication rangeVSAvoiddetection function complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The optical detecting module is designed to perform multiple detection functions including rotation detection, pressing detection, and gearshift detection using the same hardware components. The light emitting unit, light receiving unit, and processing unit can analyze different signal characteristics (rotation angle, pressing force, interval changes) to provide multi-axis instruction outputting capabilities.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent extends detection from a single rotation dimension to multiple dimensions by detecting the interval changes between the optical detecting module and the actuating component in the gearshift direction. This adds a new detection dimension (radial distance) to the traditional rotation detection, enabling three-dimensional reciprocation detection.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If the optical detecting module detects only rotation angle, then the detection algorithm is simple, but it cannot determine gearshift position

Engineering Contradiction:
Improvegearshift detection precisionVSAvoiddetection parameter complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system uses feedback from the reflecting signal characteristics to determine gearshift position. The light receiving unit receives reflecting signals that vary with the interval between the optical detecting module and the actuating component, and the processing unit analyzes these signals to calculate the interval and determine the current gear position.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent detects gearshift by monitoring changes in the interval parameter between the optical detecting module and the actuating component. As the actuating component moves between different gears, the interval changes, causing corresponding changes in the reflecting signal that can be analyzed to determine the current gear position.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If the device detects three-dimensional reciprocation, then the application versatility is enhanced, but the signal processing complexity increases

Engineering Contradiction:
Improvemulti-axis detection capabilityVSAvoidsignal processing complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The detection process is segmented into distinct functional modules: the light emitting unit generates detecting signals, the light receiving unit receives reflecting signals, and the processing unit analyzes the signals to determine different motion parameters. This segmentation allows complex three-dimensional detection to be broken down into manageable processing steps.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The reflecting signal acts as an intermediary that carries information about both rotation and interval changes. By analyzing the characteristics of this single reflecting signal, the system can simultaneously determine multiple motion parameters without requiring separate detection systems for each axis.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 the optical detecting device to simultaneously detect three-dimensional reciprocation of multi-axis instruction outputting mechanisms, enhancing its application range to include gearshift, rolling, and pressing detection, thereby optimizing market competition.

Implementation Method 1

a detecting signal emitted by the light emitting unit is reflected by an actuating component to form a reflecting signal

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

the optical detecting module utilizes the reflecting signal to acquire a movement of a feature point on the actuating component

Methodology Applied
Scientific EffectOptical detection:

Implementation Method 3

a stereoscopic structure is formed on the actuating component, the reflecting signal is affected by the stereoscopic structure to generate a fringe pattern

Methodology Applied
Scientific EffectFringe pattern generation:

Data Source

PatentUS10119843B2Optical detecting device capable of determining shift of a multi-axis instruction outputting mechanism
Publication Date: 2018.11.06 PIXART IMAGING INC
  • US10119843B2 patent drawing
  • US10119843B2 patent drawing
  • US10119843B2 patent drawing

AI summary

An optical detecting device includes a multi-axis instruction outputting mechanism and an optical detecting module, and shift of the multi-axis instruction outputting mechanism is determined accordingly. An actuating component of the multi-axis instruction outputting mechanism is moved in reciprocation at a first operating direction to output an instruction. The optical detecting module is disposed by the actuating component. An interval between the optical detecting module and the actuating component is varied according to a relative movement between the optical detecting module and the actuating component at a second operating direction, and the actuating component can be shifted between different gears. The optical detecting module determines the interval and related gearshift according to variation of a reflecting signal actuated by the actuating component, and utilizes the reflecting signal to acquire a movement of a feature point on the actuating component along the first operating direction to interpret the instruction.