Wearable Touch Control Device Using Optical Projection and Resistance Sensing
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Solution Overview
Problem
Current wearable touch devices face issues with ineffective touches due to accidental contacts during human motion, leading to inconvenience for users.
Innovation Solution
A wearable touch device comprising a carrier, a projecting unit, a monitoring unit, and a processing unit that projects a touch surface, monitors contact information, and processes it to determine effective contact, using resistance and contact strength information to differentiate between intentional and accidental touches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a projected touch surface is used on the human body, then touch control functionality is achieved, but accidental touches during human motion cause ineffective touches and inconvenience
Solution Approach 1:
The patent replaces traditional mechanical touch detection with optical projection and sensing. A projector displays touch interface elements on the user's body, and sensors detect touch interactions through optical changes, enabling touch control without physical contact with a screen.
Solution Approach 2:
The patent introduces an intermediary sensing layer between the projected touch surface and the user's body. This intermediary layer detects touch effectiveness by measuring optical changes, resistance variations, or other physical parameters that indicate intentional contact versus accidental contact during motion.
2Adaptability or versatility
If traditional touch screens are replaced with projected touch surfaces, then device flexibility and wearability are improved, but touch accuracy and effectiveness deteriorate due to accidental contacts
Solution Approach 1:
The patent employs dynamic touch validation mechanisms that continuously monitor touch characteristics in real-time. The system adjusts its detection parameters and validation criteria dynamically to distinguish between intentional touches and accidental contacts based on touch duration, pressure, location, and motion context.
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors touch interactions and provides real-time validation. If a touch is detected as accidental based on feedback from sensors (such as insufficient pressure or inappropriate motion patterns), the system rejects the input and may provide visual or haptic feedback to guide the user.
3Reliability
If multiple sensors are used to detect touch interactions, then touch effectiveness can be improved, but device complexity increases
Solution Approach 1:
The patent divides the touch detection system into separate functional modules, each handling specific aspects of touch analysis. Different sensors or sensor arrays are allocated to detect different touch parameters (position, pressure, duration, motion), and these segmented functions process information independently before integrating results for final touch validation.
Solution Approach 2:
The patent employs partial sensing coverage with strategic sensor placement to detect the most critical touch characteristics. Rather than using comprehensive sensor arrays for all possible touch parameters, the system uses selective sensing to monitor key indicators of intentional contact, accepting that not all touch attributes need to be measured for effective validation.
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
Ensures touch effectiveness by accurately judging whether a human finger effectively contacts a body region, reducing errors from accidental touches and enhancing user experience.
Implementation Method 1
the contact information includes resistance information, and the monitoring unit comprises a resistance information collecting unit for collecting present resistance information of the touch end
Data Source
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AI summary
The present invention belongs to the field of control technology, particularly relates to a wearable touch device and a wearable touch method. A wearable touch device comprises a carrier, a projecting unit, a monitoring unit and a processing unit. The carrier is wearable, the projecting unit is used for projecting to a touch surface capable of being touched by a touch end, the monitoring unit is used for monitoring contact information between the touch end and the touch surface and sending the contact information to the processing unit, and the processing unit is used for processing the contact information to judge whether the touch end effectively contacts the touch surface. The wearable touch device and the corresponding wearable touch method can ensure the touch effectiveness.