Single-Cable Signal Processing for Power and Analog Interference
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Solution Overview
Problem
Current signal transmission systems and power supply systems require multiple cables for transmitting power, analog signals, and control signals, leading to installation difficulties and increased costs. Additionally, mixed transmission of power supply and analog signals can cause signal interference and safety issues due to voltage variations and compatibility mismatches between frontend and backend devices.
Innovation Solution
A signal processing circuit with a detection module and a fluctuation filter module that dynamically processes analog signals by detecting voltage fluctuations and removing interfering sub-signals, allowing for real-time control of signal transmission through a single cable, ensuring compatibility and safety by preventing signal attenuation and device damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power supply and analog signals are transmitted through a single cable, then installation complexity and cable costs are reduced, but signal quality deteriorates due to voltage fluctuations and interference
Solution Approach 1:
The patent introduces a detection module as an intermediary component that monitors voltage fluctuations in the mixed transmission cable. This detector acts as a mediator between the power supply and analog signal, identifying interference conditions and triggering appropriate filtering actions to maintain signal quality while preserving the simplified single-cable installation structure
Solution Approach 2:
The patent extracts and removes interfering sub-signals from the analog signal transmission. A fluctuation filter module identifies and eliminates the power supply interference components that are extracted from the mixed transmission, thereby preserving signal quality without requiring separate cables for power and signal
2Adaptability or versatility
If power supply voltage varies with frontend device power consumption, then power delivery adapts to device needs, but analog signal stability deteriorates due to voltage step changes
Solution Approach 1:
The patent implements a feedback mechanism where the detection module continuously monitors the analog signal for voltage step changes caused by power consumption variations. When fluctuations exceeding a threshold are detected, the system activates the fluctuation filter module to compensate for the instability, thereby maintaining signal stability while preserving adaptive power delivery capabilities
Solution Approach 2:
The patent applies beforehand cushioning by pre-configuring the fluctuation filter module to counteract anticipated voltage step changes. The detection module identifies impending signal instability from power variations and triggers filtering actions in advance, cushioning the analog signal against the harmful effects of adaptive power delivery fluctuations
3Ease of manufacture
If mixed transmission is implemented without compatibility checking, then system deployment is simplified, but device safety deteriorates due to potential device burnout
Solution Approach 1:
The patent performs preliminary action by implementing a compatibility detection mechanism that checks whether the connected frontend device supports mixed transmission before enabling power supply through the single cable. This preliminary check prevents incompatible devices from being damaged while maintaining simplified deployment, as the compatibility verification is automatically performed during system initialization
Data Source
AI summary
A signal processing circuit for dynamically processing an analog signal. The signal processing circuit may include a detection module and a fluctuation filter module. The detection module may be configured to detect a voltage of a first sub-signal of a first frequency band of the analog signal in real time and transmit a first control signal when the voltage of the first sub-signal is out of a first preset voltage range. The fluctuation filter module may be configured to remove a second sub-signal of a second frequency band of the analog signal from the analog signal upon receiving the first control signal. The second frequency band may cover the first frequency band.