Wireless Electrode Biosignal Measurement for Unconstrained Wear
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Solution Overview
Problem
Wearable electrodes for biosignal measurement cause discomfort and constrain body movement due to physical wiring and pressure, limiting their usability and freedom of movement.
Innovation Solution
A biosignal measurement system utilizing wireless communication between multiple electrode devices to transmit and process biopotential information, eliminating physical connections and using non-inverting amplifier circuits to improve SN ratio and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wearable electrodes are attached to the body through clothing, then biosignal measurement is enabled, but discomfort and body constraint occur due to physical wiring and pressure
Solution Approach 1:
The patent extracts and removes the physical wiring component from the electrode system. Each electrode device is equipped with a wireless transmitter that sends biopotential information wirelessly to an external device, eliminating the need for physical cables that constrain the wearer's body and cause discomfort.
Solution Approach 2:
The patent replaces the mechanical wiring system with a wireless communication system. Instead of using physical cables to transmit biopotential signals, the system uses wireless transmitters and receivers to communicate electrode data, substituting mechanical connections with electromagnetic communication.
2Ease of operation
If electrodes are attached to limbs to avoid body pressure, then wearing comfort is improved, but body movement is constrained by loop-like wiring forming handcuffs
Solution Approach 1:
The patent removes the constraining wiring loop by extracting the physical connection component. Each electrode device independently transmits data wirelessly, eliminating the need for wired connections between electrodes that form restrictive loops around the limbs.
Solution Approach 2:
The patent substitutes the mechanical wiring loop with wireless communication between independent electrode devices. This allows electrodes to be positioned on limbs without creating restrictive physical loops, maintaining both comfort and movement freedom.
3Reliability
If physical wiring is used to connect electrodes, then signal transmission is reliable, but discomfort and body constraint are caused
Solution Approach 1:
The patent replaces the mechanical wiring system with wireless communication technology. Each electrode device contains a wireless transmitter that sends biopotential information to an external receiver, maintaining signal transmission reliability while eliminating the harmful physical constraints and discomfort associated with wired connections.
Solution Approach 2:
The patent extracts the physical wiring component from the system, removing the source of physical discomfort and constraint while preserving the essential function of signal transmission through wireless communication between electrode devices and the external device.
Data Source
AI summary
An embodiment is a biosignal measurement system including a plurality of electrode devices, each including an electrode, an amplifier configured to amplify a biopotential measured via the electrode, a quantization circuit configured to convert the biopotential amplified by the amplifier into digital data to generate biopotential information, and a wireless transmitter configured to transmit the biopotential information. The biosignal measurement system further including a biosignal generation device including a wireless receiver configured to receive the biopotential information transmitted from plurality of electrode devices, and an arithmetic circuit configured to generate a biosignal waveform using the biopotential information obtained in at least two of the plurality of electrode devices.