Automatic Determination Voltage Adjustment for Induction Power Signal Accuracy
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Solution Overview
Problem
Existing induction type power supply systems face challenges in amplifying weak feedback signals due to noise interference and manufacturing errors in resistor values, leading to decreased sensitivity in signal interpretation and difficulty in determining trigger signals.
Innovation Solution
A method and device for automatically adjusting the determination voltage by detecting output voltages, adding or subtracting threshold values to generate reference voltages, and using a comparator to interpret trigger signals, allowing for the use of positive or negative-phase triggers and adjusting the reference voltage magnitude to enhance signal strength and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If active band-pass filters, couplers and voltage comparators composed of multiple operational amplifiers are used to perform signal conversion, then signal interpretation capability is improved, but device complexity increases and manufacturing difficulty increases
Solution Approach 1:
The patent extracts and removes unnecessary complex components (active band-pass filters, couplers, multiple operational amplifiers) from the signal conversion circuit, retaining only the essential voltage comparator to perform the critical function of signal interpretation, thereby simplifying the overall device structure while maintaining measurement precision
Solution Approach 2:
The patent replaces expensive and complex operational amplifier-based circuits with a simpler, more economical voltage comparator circuit that achieves the same signal interpretation function with fewer components, reducing both manufacturing cost and device complexity
2Device complexity
If reference voltage is generated via two voltage-dividing resistors connected to power terminal and ground terminal, then circuit simplicity is improved, but manufacturing precision deteriorates due to resistor errors
Solution Approach 1:
The patent implements an automatic adjustment mechanism where the voltage comparator continuously monitors the reference voltage and automatically adjusts it to compensate for resistor manufacturing errors, enabling the circuit to self-correct without requiring high-precision resistors, thus maintaining both simplicity and accuracy
3Reliability
If reference voltage and normal voltage are kept far apart to avoid wrong signal output, then reliability is improved, but sensitivity for signal interpretation decreases
Solution Approach 1:
The patent transforms the static reference voltage into a dynamic adjustable parameter, allowing the reference voltage to automatically adapt its level based on the incoming signal characteristics, enabling the system to maintain optimal sensitivity while preventing wrong signal outputs through real-time adjustment
Solution Approach 2:
The patent introduces a feedback mechanism where the voltage comparator monitors the signal interpretation results and automatically adjusts the reference voltage level accordingly, creating a closed-loop system that enhances both reliability and sensitivity by continuously optimizing the voltage threshold based on actual signal conditions
4Measurement precision
If two comparators are used to recognize and trigger both positive and negative signals, then signal detection capability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent makes the voltage comparator multi-functional by enabling it to handle both positive and negative signal triggers through automatic reference voltage adjustment, allowing a single comparator to perform the work of two comparators, thereby reducing device complexity while maintaining full signal detection capability
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 improves signal interpretation sensitivity and accuracy by amplifying feedback signal strength, reducing noise interference, and enabling effective data code generation even with weak signals, while preventing switch burnout in the rectifier and signal feedback circuit.
Implementation Method 1
comparing a trigger signal of the signal analysis circuit and the reference voltage, in order to generate a first data code
Data Source
AI summary
A method of automatically adjusting a determination voltage used in an induction type power supply system includes detecting an output voltage of a signal analysis circuit; adding a first threshold value to the output voltage to generate a first determination voltage and subtracting a second threshold value from the output voltage to generate a second determination voltage; outputting the first determination voltage as a reference voltage; and comparing a trigger signal of the signal analysis circuit and the reference voltage, in order to generate a first data code; wherein when the step of comparing the trigger signal of the signal analysis circuit and the reference voltage in order to generate the first data code fails, the method further includes outputting the second determination voltage as the reference voltage and comparing the trigger signal of the signal analysis circuit and the reference voltage, in order to generate a second data code.