Human Body Data Communication Using Single Electrode Broadband Signaling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing human body communication technologies face challenges in achieving high-speed data communication with low power consumption and minimal size, while being less sensitive to low-frequency noise, due to the need for external sensors and ground electrodes, which increase complexity and power usage.
Innovation Solution
A data communication apparatus using human body with a signal electrode, a transmitting unit that transfers digital signals without modulation, and a receiving unit that detects broadband pulse signals, utilizing broadband signaling technology and integrated chip design to process and recover signals, powered by a single battery, eliminating the need for external sensors and ground electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrooptical sensor is used to recover electric field into digital signal, then reception sensibility is increased, but device complexity and power consumption are increased
Solution Approach 1:
The patent extracts and eliminates the electrooptical sensor from the human body communication system. Instead of using external sensors to recover electric field into digital signals, the invention uses a simplified receiving unit that directly detects voltage signals through skin contact, removing the complex electrooptical conversion component while maintaining reception capability.
Solution Approach 2:
The receiving unit is designed to self-detect voltage signals directly through the human body without requiring external electrooptical sensors. The human body itself serves as the signal medium, and the receiving unit processes the voltage changes directly, eliminating the need for complex external sensing equipment.
2Reliability
If ground electrode is used for ground coupling, then communication stability is improved, but device complexity and size are increased
Solution Approach 1:
The patent removes the ground electrode component from the communication system. Instead of using separate ground electrodes for ground coupling, the invention uses a single-electrode configuration where the signal electrode itself references to the body's natural ground potential, eliminating the need for additional ground coupling components.
Solution Approach 2:
The signal electrode serves multiple functions: it acts as both the active signal transmission electrode and the reference ground electrode. This single-electrode design performs both signal injection and ground referencing functions that traditionally required separate electrodes, simplifying the overall device structure.
3Speed
If wired data communication is used, then high-speed data communication is achieved, but spatial restriction and inconvenience are increased
Solution Approach 1:
The patent replaces the mechanical wired connection system with an electrical field-based communication system. Instead of using physical cables for high-speed data transmission, the invention uses voltage signals transmitted through the human body's electrical conductivity, eliminating mechanical constraints while maintaining high-speed communication capability.
4Ease of operation
If RF data communication is used, then spatial freedom is improved, but data communication speed and reliability are decreased
Solution Approach 1:
The patent introduces the human body as an intermediary medium for signal transmission. Instead of using electromagnetic waves for RF communication, the invention uses the human body's electrical conductivity as a transmission medium, allowing high-speed digital signal transmission with the spatial freedom of wireless communication.
Data Source
AI summary
In circumstance of a wearable computing system, in order to effectively transfer data between electronic devices using electric property of human body, minimization, low power, and high-speed are required. Human body data communication apparatus and module using broadband signaling technology is provided to perform high-speed peer-to-peer data communication with a signal electrode and low power. The apparatus and module have a direct coupling interface with a single electrode without an antenna and a sensor, and a transmitter transmitting digital signal without modulation, and a receiver recovering a clock and data by detecting a broadband pulse signal.