Magnetic Optical Control Panel Knob for Waterproof HMI Input
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Solution Overview
Problem
The installation of volume knobs on in-vehicle infotainment systems requires high-precision machining, increasing labor and time costs, and converting to touch-sensitive displays complicates the architecture, raising maintenance costs.
Innovation Solution
A control panel device using optical tracking sensors (OTS) with magnetic components to attach a moveable component, allowing user inputs without pre-drilling, enabling high-resolution control and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If high-precision machining is used to prepare holes for volume knob installation, then the control panel structure is achieved, but labor cost and time cost increase
Solution Approach 1:
The patent replaces mechanical hole preparation and physical mounting with magnetic attraction. The magnetic component on the control panel surface directly attracts the moveable component containing the volume knob, eliminating the need for pre-drilled holes and mechanical fastening operations. This substitution of magnetic field for mechanical connection resolves the contradiction by enabling simple, fast installation without precision machining.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the control panel and the moveable component. The magnetic component embedded in the control panel creates a magnetic field that acts as a mediator to hold and position the moveable component without direct mechanical contact or permanent structural modification. This intermediary approach allows easy installation and removal without time-consuming machining operations.
2Adaptability or versatility
If the control panel is converted to a touch-sensitive display panel, then user interface capability is improved, but architecture complexity and maintenance cost increase
Solution Approach 1:
The patent segments the control panel into functionally independent modules: the control panel device itself and the separate moveable component. This segmentation allows the control panel to maintain its display functionality while the moveable component provides tactile input capabilities. By dividing the system, complexity is distributed and managed separately, avoiding the need for a fully integrated complex touch-sensitive control panel.
Solution Approach 2:
The moveable component serves multiple functions: it provides tactile feedback for user interaction, houses the volume knob for rotational control, and can be easily replaced or reconfigured. This multi-functional design achieves versatile user interface capabilities without requiring the entire control panel architecture to be complex, as the simple moveable component handles various input modalities.
3Strength
If pre-drilled holes are made for knob installation, then mechanical connection is achieved, but waterproofing capability deteriorates
Solution Approach 1:
The patent replaces mechanical connection through holes with magnetic attraction. The magnetic component embedded in the control panel surface creates a non-contact magnetic field that holds the moveable component without requiring physical penetrations. This eliminates holes that would compromise waterproofing while maintaining strong mechanical connection through magnetic force, thus resolving the contradiction between connection strength and water resistance.
4Stability of the object's composition
If the moveable component is fixed permanently, then structural stability is improved, but ease of replacement and maintenance deteriorates
Solution Approach 1:
The patent creates a dynamic mounting system where the moveable component can be easily attached and detached through magnetic attraction. The magnetic connection provides stable holding during normal use (structural stability) but allows simple separation when replacement or maintenance is needed (ease of repair). This dynamic characteristic resolves the contradiction by adapting the connection strength to the operational context: stable during use, easily changeable when needed.
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
Reduces installation and maintenance costs while providing high control accuracy and waterproofing, with replaceable components and adjustable appearance.
Implementation Method 1
a magnetic component (120) that is positioned below a first surface (102) of the control panel device (100)... the moveable component (110) is magnetically attracted by the magnetic component (120) to attach to the first surface (102)
Implementation Method 2
an optical tracking sensor (OTS) that is positioned below the first surface (102)... the OTS (130) may be arranged to sense movement or rotation of the moveable component (110)
Data Source
AI summary
A control panel device for providing human-machine interface with aid of optical detection and associated method are provided. The control panel device may include a magnetic component that is positioned below a first surface of the control panel device, a moveable component that is positioned above the first surface, and an optical tracking sensor (OTS) that is positioned below the first surface. The moveable component is magnetically attracted by the magnetic component to attach to the first surface. In addition, the OTS may be arranged to sense movement or rotation of the moveable component as at least one user input in order to generate at least one output corresponding to the at least one user input.