Capacitive Touchpad for Vehicle Mirror Gesture Control

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Solution Overview

Problem

Current vehicle mirror adjustment systems rely on mechanical links and switches, which can be cumbersome and aesthetically limiting, failing to provide an intuitive and visually appealing method for operators to adjust side mirrors according to their preferences.

Innovation Solution

A touchpad with a capacitive sensing surface is integrated into the vehicle cabin, allowing operators to adjust side mirrors through gestures, using X and Y coordinates to determine movement direction and speed, enabling precise and intuitive control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If mechanical links and switches are used for mirror adjustment, then the system is reliable and easy to manufacture, but the device complexity increases and aesthetic features are limited

Engineering Contradiction:
Improveintuitiveness of mirror adjustmentVSAvoidnumber of mechanical components
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces mechanical links and physical switches with a capacitive touchpad interface. The touchpad detects finger gestures (touch, swipe, tap) to control mirror adjustment, eliminating the need for mechanical connection elements and physical switches. This substitution reduces device complexity while maintaining reliability through electronic sensing and actuation systems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If traditional switches and mechanical links are used, then manufacturing is simple, but the aesthetic features and layout flexibility are compromised

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidaesthetic features and layout flexibility
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

By replacing mechanical components with an electronic touchpad interface, the system achieves a cleaner, more modern aesthetic appearance. The touchpad can be integrated into various vehicle interior surfaces (door panels, dashboard, console) without requiring visible mechanical linkages or switches, providing manufacturing flexibility and design freedom while maintaining ease of manufacture through standardized electronic components.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If a capacitive touchpad with coordinate-based control is used, then ease of operation and precision are improved, but device complexity increases

Engineering Contradiction:
Improveprecision of mirror position controlVSAvoidcomplexity of control system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent employs a two-dimensional capacitive touchpad surface with X and Y coordinates to control mirror adjustment. By mapping touch location coordinates to mirror position commands, the system achieves precise control of mirror orientation in multiple dimensions (azimuth and elevation) through a single planar interface. This dimensional mapping approach provides intuitive and accurate control without requiring complex mechanical adjustment mechanisms.

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

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 system provides a simple, aesthetically pleasing, and intuitive method for adjusting vehicle mirrors, reducing the number of mechanical components and switches, while allowing for precise control and customization of mirror positions.

Implementation Method 1

A touchpad including a capacitive sensing surface is integrated into the vehicle cabin, allowing operators to adjust side mirrors through gestures

Methodology Applied
Scientific EffectCapacitive sensing: Capacitance

Data Source

PatentUS11203309B2Touchpad for mirror posture adjustment
Publication Date: 2021.12.21 CONTINENTAL AUTOMOTIVE SYSTEMS INC
  • US11203309B2 patent drawing
  • US11203309B2 patent drawing
  • US11203309B2 patent drawing

AI summary

A vehicle mirror control system includes a touchpad including a sensing surface operative to produce signals indicative of a desired movement of a vehicle mirror responsive to a gesture detected by the sensing surface. A vehicle mirror assembly and a method are also disclosed.