PoE Smart Speaker Power Supply for High-Resolution Audio
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Solution Overview
Problem
Existing smart speakers require separate electrical connections for power and audio data, which complicates installation and limits energy efficiency in delivering high-resolution audio.
Innovation Solution
A PoE powered smart speaker that receives both power and audio data over an Ethernet cable, utilizing a dedicated power supply subsystem to manage energy from four pairs of the Ethernet cable, enabling efficient power delivery to the microprocessor and digital audio amplifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If separate electrical connections are used for power and audio data, then installation complexity increases and energy efficiency decreases, but power delivery reliability is maintained
Solution Approach 1:
The patent combines power delivery and audio data transmission into a single Ethernet cable connection. The Power over Ethernet (POE) system merges the electrical power supply function with the data communication function, allowing both power and audio data to be delivered through the same cable infrastructure. This eliminates the need for separate electrical wiring and reduces installation complexity while improving energy efficiency through integrated power management.
Solution Approach 2:
The Ethernet cable is designed to serve multiple functions simultaneously: it provides both power delivery and audio data transmission. The POE-enabled router or switch can deliver power through the same cable that carries audio signals, making the cable a universal connection solution that eliminates the need for dedicated electrical wiring for smart speakers.
2Device complexity
If Power over Ethernet (POE) is used to deliver power and audio data over a single cable, then installation complexity is reduced and energy efficiency is improved, but power delivery capacity becomes insufficient for high-resolution audio
Solution Approach 1:
The patent utilizes advanced POE standards (such as IEEE 802.3bt) that increase the power delivery capacity of Ethernet cables from traditional 15.4W to up to 96W. By changing the electrical parameters of the POE system (voltage, current, and cable configuration), the solution maintains the simplicity of single-cable installation while providing sufficient power for high-resolution audio amplification and processing.
3Power
If separate electrical connections are used, then sufficient power can be delivered for high-resolution audio, but the device requires more complex wiring infrastructure
Solution Approach 1:
The system merges power delivery and data transmission into a single Ethernet cable connection. The POE infrastructure combines the electrical power supply function with the audio data communication function, eliminating the need for separate electrical wiring and reducing installation complexity while providing sufficient power for high-resolution audio through advanced POE standards.
4Use of energy by moving object
If traditional power supplies are used, then power management is simple, but energy efficiency is insufficient for high-resolution audio playback
Solution Approach 1:
The POE power supply subsystem incorporates feedback mechanisms that monitor power consumption and dynamically adjust power delivery. The system includes power management circuits that detect the power requirements of the audio amplifier and microprocessor, and automatically optimize power distribution to maximize energy efficiency while ensuring sufficient power for high-resolution audio playback.
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 solution eliminates the need for separate electrical connections, enhances energy efficiency by 30%, and enables high-resolution audio playback by providing sufficient power to the microprocessor and audio amplifier.
Implementation Method 1
at least one heater resistor in the housing powered by the power supply subsystem. The at least one heater resistor is controlled by the microprocessor subsystem to automatically heat the interior of the housing when temperature inside the housing falls below a given temperature
Data Source
AI summary
A networked speaker device includes a sealed housing and an Ethernet port in the housing for receiving power and audio data from a network router via an Ethernet cable. A power supply subsystem in the housing manages the power received at the Ethernet port. A microprocessor subsystem, powered by the power supply subsystem, receives and processes the audio data to generate output audio signals. A digital audio amplifier, powered by the power supply subsystem, amplifies the output audio signals to drive a speaker driver to render an audio output. The device also includes at least one heater resistor in the housing powered by the power supply subsystem. The at least one heater resistor is controlled by the microprocessor subsystem to automatically heat the interior of the housing when temperature inside the housing falls below a given temperature.