Analog Signal Conditioning Channels for Accurate A/D Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional signal processing technologies have low accuracy when handling analog signals due to their wide range, making it difficult to process them effectively.
Innovation Solution
A signal processing apparatus and method that includes analog channels with interface protectors, amplifiers, attenuators, filters, and an analog-to-digital conversion unit, which condition and convert analog signals into digital signals using a multiplexer and self-correction mechanisms to improve processing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional A/D converter is used to directly convert analog signal, then device complexity is reduced, but measurement precision deteriorates due to wide range of analog signals
Solution Approach 1:
The patent segments the signal processing function into multiple independent analog channels, each capable of conditioning signals independently before digital conversion. This segmentation allows each channel to be optimized for specific signal types while maintaining overall system precision without excessive complexity.
Solution Approach 2:
The patent applies preliminary signal conditioning actions (amplification, attenuation, filtering) before the analog-to-digital conversion process. By preprocessing the analog signals to bring them within optimal ranges, the system achieves higher measurement precision without requiring an overly complex direct conversion approach.
2Measurement precision
If multiple signal conditioning components are added to improve accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent designs each analog channel with multi-functional components that can handle different signal types and conditions. The interface protector, attenuator, amplifier, and filter are integrated into universal channel structures that can process various analog signals, reducing overall device complexity while maintaining high measurement precision across different signal types.
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
The solution enhances the accuracy of analog signal processing by conditioning and converting analog signals into digital signals, allowing for improved signal processing and compensation based on predetermined correction values.
Implementation Method 1
The amplifier is configured to perform amplitude amplification on the voltage signal sent by the interface protector
Implementation Method 2
The attenuator is configured to perform amplitude attenuation on the voltage signal sent by the interface protector
Implementation Method 3
The filter is configured to perform high frequency noise signal filtering on the received voltage signal
Implementation Method 4
The analog-to-digital conversion unit is configured to convert the second analog signal sent from any of the at least one analog channel into a digital signal
Data Source
AI summary
A signal processing apparatus, a signal processing system and a signal processing method are provided. The signal processing apparatus includes at least one analog channel and an analog-to-digital conversion unit. Each of the at least one analog channel is configured to, in response to receiving a first analog signal inputted from outside, condition the first analog signal to generate a second analog signal, and send the second analog signal to the analog-to-digital conversion unit. The analog-to-digital conversion unit is configured to convert the second analog signal sent from any of the at least one analog channel into a digital signal.