Oscillator-Based Circuit Simulation for Distinguishing Environment Variables
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Solution Overview
Problem
Traditional circuit simulation methods face challenges in accurately distinguishing between analog signals from different environment variable values, leading to inefficiencies and inaccuracies in digital simulation analysis due to the inability to differentiate signals within the same level interval.
Innovation Solution
A method and apparatus for analog simulation of a circuit model that involves obtaining delay times of logic devices under varying environment conditions, calculating frequencies of output signals, and establishing a digital simulation model to digitize environment variables, allowing for precise analysis and adjustment of environment parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If analog signals are converted into digital signals for digital simulation, then simulation cycle is shortened, but signals within the same level interval cannot be distinguished leading to inaccurate results
Solution Approach 1:
The patent changes the parameter representation from binary levels (0/1) to multi-level frequency modulation. By encoding environment variable values into different frequency levels of digital signals, the system maintains the speed benefits of digital simulation while achieving precise distinction between signals from different environment conditions. This resolves the contradiction by transforming the signal representation parameter rather than sticking to traditional binary encoding.
2Measurement precision
If traditional analog simulation is used, then signal distinction accuracy is maintained, but simulation time becomes excessively long
Solution Approach 1:
The patent substitutes the traditional analog simulation approach with a digital signal processing system. Instead of using continuous analog signals that require time-consuming physical measurement and analysis, the system uses digital signals with frequency-modulated codes that can be processed rapidly through computational algorithms. This substitution maintains signal distinction accuracy while dramatically reducing simulation time.
3Measurement precision
If environment variable values are converted to analog signals for simulation, then accurate environment parameter representation is achieved, but analysis efficiency becomes low
Solution Approach 1:
The patent creates a digital copy of the environment variable information encoded in frequency-modulated signals. Instead of directly analyzing physical analog signals, the system captures the frequency characteristics as digital data representations, which can then be processed efficiently through computational methods. This copying approach maintains the accuracy of environment parameter representation while enabling rapid digital analysis and significantly improving productivity.
Data Source
AI summary
Embodiments relate to a method and an apparatus for analog simulation of a circuit model. The method includes: obtaining a plurality of different environment variable values of the circuit model; obtaining delay time of each of the logic devices in the oscillator under the plurality of different environment variable values according to the plurality of environment variable values; inputting the delay time of each of the logic devices in the oscillator under the plurality of different environment variable values into the digital circuit model to perform a simulation test; obtaining frequencies of an output signal from the oscillator under the plurality of different environment variable values; and obtaining a relationship between the plurality of environment variable values and the frequencies of the output signal from the oscillator according to the frequencies of the output signal from the oscillator under the different environment variable values, to digitize the environment variable values.