AC Power Phase-Difference Signaling for Power Source Identification
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Solution Overview
Problem
Current systems require separate communication networks to identify the power source of transmitted AC power, necessitating additional communication facilities on both the transmission and reception sides.
Innovation Solution
A control device that generates information as a bit string and controls the phase difference between AC power's current and voltage at predetermined intervals to embed this information within the power transmission, allowing identification on the reception side via the existing power network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate communication networks are used to transmit power source identification information, then information transmission reliability is improved, but device complexity and cost increase due to additional communication facilities
Solution Approach 1:
The patent merges the information transmission function with the existing power transmission network by embedding identification information in the phase difference of AC power. Instead of using a separate communication network, the power network itself carries both power and information, eliminating the need for additional communication facilities while maintaining transmission reliability.
Solution Approach 2:
The power transmission network is made multi-functional by enabling it to transmit both electrical energy and information simultaneously. The phase difference of the AC power serves dual purposes: maintaining power transmission while encoding identification information, thus making the power network universal for both energy and data communication.
2Device complexity
If phase difference control is used to embed information in AC power, then device complexity is reduced by eliminating separate communication facilities, but measurement precision requirements increase for detecting phase differences
Solution Approach 1:
The patent changes the parameter used for information encoding from amplitude or frequency to phase difference. By controlling and detecting phase differences at predetermined time intervals, the system embeds identification information in the temporal relationship between voltage and current waveforms, which can be measured with appropriate precision using standard power measurement devices.
3Loss of substance
If information is transmitted through power network phase differences, then loss of substance is reduced by eliminating communication network infrastructure, but energy consumption may increase due to continuous phase control
Solution Approach 1:
The patent implements periodic phase difference control at predetermined time intervals to transmit information bits. Instead of continuous control, the system adjusts phase differences periodically to encode identification information, reducing unnecessary energy consumption while maintaining the ability to transmit information through the power network.
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 the transmission of information, such as power source identification, directly through the power transmission and distribution network without the need for additional communication facilities, facilitating efficient power source recognition on the reception side.
Implementation Method 1
control means for controlling a phase difference between current and voltage of AC power at predetermined time intervals so that each bit value included in the bit string is represented
Data Source
AI summary
There are included: generation means for generating predetermined information represented by a bit string; and control means for controlling a phase difference between current and voltage of AC power at predetermined time intervals so that each bit value included in the bit string is represented.