Multi-Drop Power Division Multiplexing Without Software Negotiation
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Solution Overview
Problem
Power consumption in multi-drop applications is tedious and difficult to allocate effectively, often requiring software negotiation to determine power allotment for each device.
Innovation Solution
A method involving a power transmitter that generates a multi-drop signaling waveform with divisions assigned to each drop, superimposing it onto a power waveform to allow power receivers to draw power during specific time periods or phase divisions based on their assigned divisions, using orthogonal frequency power division multiplexing (OFPDM) to manage power allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If software negotiation is used to allocate power to each device, then power allocation can be flexible and adaptive, but the process becomes tedious and difficult to manage
Solution Approach 1:
The patent replaces software-based power negotiation with a physical layer solution using orthogonal frequency power division multiplexing (OFPDM). Power is allocated by assigning specific frequency divisions to different devices, allowing simultaneous power delivery without software intervention. This substitutes the software negotiation mechanism with a hardware-based frequency division mechanism.
Solution Approach 2:
The power spectrum is segmented into multiple orthogonal frequency divisions, with each division assigned to a specific device. This segmentation allows multiple devices to receive power simultaneously on different frequency channels, eliminating the need for sequential software negotiation while maintaining flexible power allocation.
2Ease of manufacture
If traditional power delivery methods are used, then implementation is simple, but power allocation efficiency is low and requires software negotiation
Solution Approach 1:
The patent employs periodic orthogonal frequency divisions where each device is assigned specific time-frequency slots for power reception. This periodic structure enables efficient power allocation across multiple devices simultaneously, improving productivity while maintaining implementation feasibility through structured waveform generation.
Solution Approach 2:
The system changes the parameter space for power delivery by utilizing frequency domain separation instead of time-domain sequential negotiation. By transforming power allocation from a sequential software process to a parallel hardware process based on frequency parameters, the system achieves higher efficiency without significantly increasing implementation complexity.
3Speed
If power is delivered to multiple drops simultaneously, then power distribution speed increases, but power consumption allocation becomes difficult to manage
Solution Approach 1:
The patent introduces orthogonal frequency divisions as an intermediary mechanism that mediates between the power source and multiple devices. Each frequency division acts as a dedicated channel that simplifies power consumption management for each device while enabling simultaneous power delivery, thus resolving the contradiction between speed and management complexity.
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 enables efficient, fast, and fault-managed power distribution across multiple drops, reducing the need for software negotiation and improving power allocation efficiency.
Implementation Method 1
superimposing it onto a power waveform to allow power receivers to draw power during specific time periods or phase divisions
Data Source
AI summary
Devices, systems and methods to provide a more effective way of allocating power across a plurality of drops in a multi-drop power delivery arrangement. A power transmitter transmits a power waveform together with a multi-drop signaling waveform. Thus, the power waveform and the multi-drop signaling waveform are directed to each of a plurality of drops. The multi-drop signaling waveform has a plurality of divisions, and each of a plurality of power receivers at respective drops of the plurality of drops are assigned to one or more divisions of the plurality of divisions of the multi-drop signaling waveform to draw an associated portion of power from the power waveform.