Human Body Communication Apparatus for Low-Power Data Transmission
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Solution Overview
Problem
Existing communication devices require physical cables for data transmission, which restricts mobility and efficiency, and consume more power when using RF modules.
Innovation Solution
A human body communication apparatus using an electrode unit, high pass filter, comparator, and controller to generate and transmit base-band signals through the human body as a data transmission channel, reducing power consumption and preventing data leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If RF modules are used for data transmission, then communication speed is improved, but power consumption increases
Solution Approach 1:
The patent replaces the RF (radio frequency) electromagnetic transmission system with a human body communication system that uses the human body as a transmission medium. This substitution eliminates the need for traditional RF modules and their associated high power consumption, while maintaining data transmission capability through the conductive properties of the human body.
Solution Approach 2:
The patent changes the transmission medium from air (for RF) to human body tissue, fundamentally altering the transmission parameters. By using the human body's electrical conductivity as the transmission channel, the system achieves lower power consumption while maintaining communication functionality through direct electrical signal transmission via the electrode unit.
2Reliability
If physical cables are used for data transmission, then data security is improved, but mobility is reduced
Solution Approach 1:
The patent introduces the human body as an intermediary transmission medium between communication devices. Instead of using physical cables that restrict movement, the human body itself becomes the conduit for data transmission, enabling wireless-like mobility while maintaining the security benefits of direct physical connection through body conductivity.
3Use of energy by moving object
If human body communication is used, then power consumption is reduced, but signal noise increases
Solution Approach 1:
The patent extracts and eliminates noise from the received signal through signal processing techniques. The noise removal unit specifically targets and removes noise components from the signal received through the electrode unit, separating the useful data signal from the harmful noise interference to restore clear communication.
Solution Approach 2:
The patent implements a feedback mechanism where the received signal is processed, noise is removed, and the cleaned signal is used to recover and retransmit data. This feedback loop ensures that noise contamination is continuously addressed and corrected, maintaining signal integrity despite the noisy human body transmission medium.
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 efficient, low-power data communication without the need for physical cables or RF modules, enhancing energy efficiency and preventing hacking by utilizing the human body as a data transmission medium.
Implementation Method 1
the electrode unit is placed in direct contact with the human body for transmitting a signal in a form of a current through the human body
Data Source
AI summary
The present invention provides a communication apparatus being in directly contact with a human body and using the human body as a transmission channel for data communication. The communication apparatus attached to the human body transmits a signal in the form of a current, receives a signal transmitted from another communication apparatus attached to the human body therethrough, and eliminates noise included in the received signal. In addition, the communication apparatus compares the noise-eliminated signal and a reference signal and recovers an original signal. Further, the communication apparatus generates a base-band signal and transmits the same through the human body.