Intra-body Communication Charge Control for Signal Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Intra-body communication technologies face challenges in maintaining signal strength and reducing power consumption, particularly when using electrostatic fields for data communication through the human body, as increasing signal strength often leads to higher power consumption and battery drain.
Innovation Solution
A communication system that includes a capacitive touch panel and an intra-body communication antenna, with a charge control unit that adjusts the charge amount on the body's surface to increase signal strength only when necessary, specifically during user touch operations, thereby reducing power consumption by limiting signal strength adjustment to touch periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal strength is increased by increasing contact area, then communication stability is improved, but device complexity and ease of operation are worsened
Solution Approach 1:
The patent changes the parameter of charge amount on the body surface to control signal strength. The charge control unit adjusts the charge amount dynamically based on signal strength measurements, allowing communication stability to be maintained without requiring increased contact area. This transforms the control parameter from physical contact area to electrical charge amount.
2Reliability
If signal strength is always increased to stabilize communication, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic measurement of signal strength and periodic adjustment of charge amount based on these measurements. The charge control unit does not continuously increase charge but rather adjusts it periodically based on measured signal strength levels. This allows communication stability to be maintained while reducing unnecessary power consumption during periods when signal strength is already sufficient.
Solution Approach 2:
The patent employs a feedback mechanism where signal strength is measured and used to control the charge amount. The measurement unit measures signal strength, and the charge control unit adjusts the charge amount based on this measurement to maintain signal strength above a threshold. This closed-loop feedback system ensures communication reliability while minimizing power consumption by only increasing charge when necessary.
3Reliability
If charge amount is increased to improve signal strength, then communication reliability is improved, but battery life is reduced
Solution Approach 1:
The patent implements a self-regulating system where the charge control unit automatically adjusts the charge amount on the body surface based on measured signal strength. The system serves itself by using the measured signal strength to control the charge amount, maintaining communication reliability while minimizing power consumption and extending battery life without requiring external intervention or continuous maximum power supply.
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
This approach stabilizes communication while minimizing power consumption by controlling the charge amount and voltage only when the signal strength falls below a threshold during user interactions, thereby extending battery life and maintaining efficient data transfer.
Implementation Method 1
a capacitive touch panel 25 that detects, when a user touches an operation surface, a position touched by the user
Implementation Method 2
data communication is carried out by using the charge stored in the human body... using an electrostatic field at a first position where the first communication device and the body are close to each other
Implementation Method 3
a charge control unit configured to control an amount of charge on a surface of the body... control for increasing voltage for controlling a charge amount of the charge control unit
Data Source
AI summary
A communication system includes: a first communication device carried by a user and including a first intra-body communication unit configured to carry out data communication with the second communication device via the user's body, and a charge control unit configured to control a charge amount on the body surface; and a second communication device including a capacitive touch panel, an intra-body communication antenna, a second intra-body communication unit configured to carry out data communication with the first communication device via the body, and an intra-body communication control unit configured to perform control to increase signal strength of a signal received at the second intra-body communication unit when a measured value of the signal strength is lower than a predetermined threshold under a condition that user's touch operation on the touch panel is started.