Haptic Actuator Module With Capacitive Pressure Sensing
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Solution Overview
Problem
Existing human-machine interfaces struggle to provide a compact and standalone actuator unit for generating haptic feedback, which is essential for creating a tactile experience for users.
Innovation Solution
The development of an actuator unit with a movable surface in the Z direction, equipped with a capacitive pressure-measuring means and a feedback component, which transmits haptic feedback to the surface upon pressure measurement exceeding a set limit value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex layer structure is provided beneath a touch-sensitive surface, then haptic feedback can be generated, but the structure is firmly integrated into the electronic device and does not constitute a stand-alone component
Solution Approach 1:
The actuator unit is divided into separate functional modules: a movable housing part with movable surface, a feedback component, and a pressure-measuring means. This segmentation allows the actuator unit to function as a stand-alone component while maintaining all necessary haptic feedback capabilities.
Solution Approach 2:
The actuator unit is designed as a universal module that can be placed at various positions under a display or touch-sensitive surface. It combines pressure sensing, feedback generation, and movable surface functionality in a single standardized unit that can be adapted to different electronic devices.
2Volume of moving object
If pressure measurement and feedback components are integrated in the same space, then compact design is achieved, but the components may interfere with each other
Solution Approach 1:
The pressure-measuring means is arranged spatially separate from the feedback component in the Z direction, utilizing different spatial dimensions. This arrangement maintains compact overall size while preventing component interference through three-dimensional spatial separation.
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 solution enables the creation of a compact, standalone actuator unit that effectively generates haptic feedback, enhancing the tactile experience for users in various human-machine interfaces.
Implementation Method 1
capacitive pressure measurement being used
Implementation Method 2
The haptic feedback in this case may be generated by a feedback component in various ways, for example by use of piezoelectric, electromagnetic and/or electrostatic effects
Implementation Method 3
The haptic feedback in this case may be generated by a feedback component in various ways, for example by use of piezoelectric, electromagnetic and/or electrostatic effects
Implementation Method 4
The haptic feedback in this case may be generated by a feedback component in various ways, for example by use of piezoelectric, electromagnetic and/or electrostatic effects
Data Source
AI summary
The present disclosure relates to an actuator unit for generating haptic feedback on a human-machine interface. The actuator unit has a surface which can be moved in the Z-direction and a pressure-measuring apparatus for measuring pressure in the Z-direction. A feedback component is designed to transmit haptic feedback to the movable surface in reaction to pressure measured by the pressure-measuring apparatus. The actuator unit has contacting means for connecting the actuator unit to a control unit which is designed to receive and evaluate pressure measurement values and to activate the feedback component; at least two housing parts, wherein a first housing part forms the movable surface movable with respect to a second housing part at least in the Z-direction; wherein the pressure-measuring apparatus is a capativie measuring apparatus and is formed on the movable housing part and the feedback component is arranged between the two housing parts.