Wearable Galvanic Sensors for Accurate Skin-to-Skin Touch Detection
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Solution Overview
Problem
Existing touch detection technologies, such as mechanical buttons and touch screens, fail to accurately detect direct human contact without intervening sensors, limiting their effectiveness in therapeutic and gaming applications that require skin-to-skin interaction.
Innovation Solution
Wearable devices using galvanic coupling sensors with conductive electrodes transmit high frequency signals through the wearer's skin, allowing for the detection of collaborative interaction events by measuring power transfer between sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mechanical buttons or touch screens are used for touch detection, then the device structure is simple, but the detection accuracy of direct skin-to-skin contact is poor
Solution Approach 1:
The patent replaces mechanical touch detection systems with a galvanic coupling-based electrical detection system. The wearable device uses galvanic sensors to detect skin-to-skin contact through electrical signal transmission through the body, substituting mechanical button presses or touch screen contact with a more sophisticated electrical field-based detection method that can accurately sense direct human contact
Solution Approach 2:
The patent introduces an intermediary electrical signal transmission mechanism through the human body. The galvanic sensors transmit electrical signals through the wearer's skin, and when two people make skin-to-skin contact, the signal propagates through the intermediate human tissue, enabling detection of the contact event without direct sensor-to-sensor contact
2Measurement precision
If galvanic coupling sensors with high frequency signal transmission are used, then the detection precision of collaborative interaction is improved, but the energy consumption increases
Solution Approach 1:
The patent employs periodic transmission of high frequency signals through the galvanic coupling sensors rather than continuous transmission. The microcontroller periodically sends test signals through the wearer's skin and measures the returned signal characteristics, enabling accurate detection of skin-to-skin contact events while consuming energy only during these periodic measurement intervals
Solution Approach 2:
The patent dynamically adjusts signal transmission parameters such as frequency, amplitude, and duration based on detection needs. The system uses high frequency signals for detection but modulates these parameters to optimize the balance between detection precision and energy consumption, transmitting signals only when contact detection is required rather than continuously
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 accurate detection of skin-to-skin contact for improved rehabilitation and gaming experiences by forming a propagation channel through human tissue, facilitating interactive learning and therapy.
Implementation Method 1
one or more galvanic coupling sensors, each galvanic coupling sensor including a plurality of electrodes configured to interface with a wearer's skin
Implementation Method 2
at least one of the one or more galvanic coupling sensors is configured to transmit a high frequency signal through the wearer's skin
Implementation Method 3
the microcontroller being configured to detect a collaborative interaction event by measuring power transferred between the one or more galvanic coupling sensors
Data Source
AI summary
A system may include a first wearable sensor in operable communication with a microcontroller. A system may include a second wearable sensor, wherein the microcontroller is configured to. A system may include receive a sensor signal from the first wearable sensor. A system may determine, based on the sensor signal, whether a collaborative interaction event occurred between the first wearable sensor and the second wearable sensor.