Pulse Width Generator Auto-Calibration for Precise Signal Timing
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Solution Overview
Problem
Conventional pulse width generators require extensive time and effort to set up accurately due to dependencies on pressure, voltage, and temperature, leading to inefficiencies in generating precise pulse signals.
Innovation Solution
A pulse width generator system incorporating a converter, period calculator, auto-calibration unit, and multiplexer to generate a tunable pulse width output signal, which adjusts for variations in pressure, voltage, and temperature using a feedback loop and linear extrapolation equations to ensure precise pulse width generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional pulse width generator setup methods are used, then measurement precision can be achieved, but loss of time increases significantly due to extensive setup requirements
Solution Approach 1:
The system performs preliminary characterization of the pulse width generator device properties during manufacturing or initial setup, storing these characteristics in a lookup table. During operation, the system retrieves pre-calculated pulse width values from the lookup table based on desired pulse widths, eliminating the need for time-consuming real-time measurements and setup procedures while maintaining accuracy.
Solution Approach 2:
The system incorporates a feedback mechanism that measures the actual pulse width output and compares it with the desired pulse width. Based on this comparison, the system automatically adjusts control parameters to compensate for device variations and environmental factors, achieving accurate pulse generation without extensive manual setup.
2Measurement precision
If device properties are measured and adjusted for accuracy, then pulse signal precision improves, but device complexity increases due to additional setup requirements
Solution Approach 1:
The system implements self-calibration and self-adjustment capabilities that automatically compensate for device variations without requiring external measurement equipment or complex setup procedures. The device monitors its own performance and adjusts parameters autonomously, simplifying the overall system complexity while maintaining precision.
Solution Approach 2:
The system uses pre-characterized device properties and stored lookup tables that contain optimized parameter sets for different operating conditions. By selecting appropriate parameters from these pre-stored tables based on desired pulse widths, the system achieves accurate pulse generation without requiring complex real-time measurements or adjustments.
3Measurement precision
If extensive setup procedures are implemented, then pulse signal accuracy improves, but productivity decreases due to time consumption
Solution Approach 1:
The system performs all necessary characterization and calibration work in advance, storing results in lookup tables. During actual pulse signal generation, the system simply retrieves pre-calculated values from these tables, enabling rapid and accurate pulse generation without time-consuming setup procedures, thereby significantly improving productivity.
Solution Approach 2:
The system incorporates real-time feedback that automatically adjusts parameters based on measured pulse width deviations. This closed-loop control enables the system to maintain high accuracy without requiring extensive manual setup, allowing operators to quickly generate accurate pulse signals and improving overall productivity.
Data Source
AI summary
A circuit includes a period calculator and a pulse width calculator. The period calculator is configured for receiving a first predetermined digital code and a second predetermined digital code, and for calculating a first calculated period value according to the first predetermined digital code, and calculating a second calculated period value according to the second predetermined digital code. The first predetermined digital code has a first predetermined period value, and the second predetermined digital code has a second predetermined period value. The pulse width calculator is configured for receiving a predetermined pulse width, and calculating a first pulse width code corresponding to the predetermined pulse width according to the first predetermined period value, the second predetermined period value, the first calculated period value, the second calculated period value and the predetermined pulse width.