Switchable Capacitor Topology for Wireless Data Carrier
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Solution Overview
Problem
Existing monitoring devices with wireless data and power transmission for medical condition surveillance face inefficiencies in data transmission and energy consumption, particularly in load modulation methods that result in power dissipation as heat and voltage variations.
Innovation Solution
A monitoring device with a data carrier using a receiver coil, data processing means, rectifier means, switch means, and at least two capacitors, where the capacitors are connected in parallel or series to achieve load modulation with minimal power dissipation, and energy is stored and used to power the data processing means, with switching controlled by a data stream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If load modulation is used for wireless data transmission from data carrier to reader, then data transmission is achieved, but power dissipation as heat occurs and voltage variations arise
Solution Approach 1:
The patent changes the electrical configuration parameters of the capacitors from fixed parallel connection to switchable between parallel and series connections. This parameter change allows the data carrier to modulate its load impedance for data transmission while maintaining optimal power transfer conditions, thereby reducing power dissipation as heat and minimizing voltage variations during load modulation.
Solution Approach 2:
The patent introduces dynamic switching capability between different capacitor configurations (parallel and series) based on operational requirements. The switch means enable the system to dynamically adjust its electrical characteristics during operation, optimizing both data transmission efficiency and power consumption by selecting the appropriate configuration at different times.
2Use of energy by moving object
If capacitors are connected in parallel configuration, then power consumption is reduced, but voltage stability may be compromised
Solution Approach 1:
The patent employs dynamic switching between parallel and series capacitor configurations to maintain both low power consumption and voltage stability. The switch means respond to operational conditions, selecting parallel configuration when power efficiency is prioritized and series configuration when voltage stability is required, thus achieving both objectives through time-varying optimization.
Solution Approach 2:
By changing the electrical configuration parameter (connection topology) of the capacitors, the system can adjust its equivalent capacitance and impedance characteristics. This parameter change enables the data carrier to optimize its power consumption while maintaining adequate voltage stability for reliable operation of the data processing means.
3Volume of moving object
If data carrier size is reduced for implantation feasibility, then implantation becomes practical, but power management complexity increases
Solution Approach 1:
The patent combines multiple functions into the data carrier including receiver coil for wireless power reception, rectifier means for power conversion, switch means for configuration control, and capacitors for energy storage and load modulation. This integration of power management and data transmission functions in a single compact unit achieves size reduction for implantation while managing complexity through functional consolidation rather than separate components.
Solution Approach 2:
The capacitor bank serves multiple functions: energy storage for powering the data processing means, load modulation for wireless data transmission, and voltage regulation through configuration switching. This multi-functionality reduces the need for separate components, thereby reducing overall data carrier size while managing power management complexity through unified component design.
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 configuration reduces power consumption and achieves high power efficiency in wireless data transmission and energy storage, enabling smaller and more efficient monitoring devices suitable for implantation.
Implementation Method 1
The basic principle relies on generating an alternating current in the transmitter coil. The current in the transmitter coil generates a magnetic field which induces a current in the receiver coil.
Implementation Method 2
The data carrier comprises a receiver coil, data processing means, rectifier means, switch means and at least two capacitors
Data Source
AI summary
In a monitoring device including a reader and a data carrier, the data carrier includes a receiver coil (201), a resonator capacitor (202), rectifier means (203), a modulation capacitor (206), an energy storage capacitor (204), three modulation switches (209, 210, 211) and data processing means. The modulation capacitor (206), the energy storage capacitor (204), the data processing means and the three modulation switches (209, 210, 211) are arranged such that, in a first configuration, the modulation capacitor (206) and the energy storage capacitor (204) are coupled in parallel and, in a second configuration, the modulation capacitor (206) and the energy storage capacitor (204) are coupled in series. The invention further provides a method of operating a data carrier in such a monitoring device.