Radar Liquid Level Measuring Apparatus Frequency Control
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Solution Overview
Problem
Radar liquid level measuring apparatuses are prone to accuracy issues due to changes in the measurement environment, particularly temperature fluctuations, which affect the frequency difference and overall functionality.
Innovation Solution
A radar liquid level measuring apparatus comprising a first oscillation module, a second oscillation module, a frequency comparator, and a control module, where the control module adjusts the second oscillation frequency to maintain a constant frequency difference with the first oscillation frequency, ensuring accurate measurements despite environmental changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the radar liquid level measuring apparatus uses fixed frequency oscillation modules, then the device structure is simple, but the measurement accuracy deteriorates when temperature changes violently
Solution Approach 1:
The patent applies dynamics by making the second oscillation module's frequency adjustable rather than fixed. The control module dynamically adjusts the second oscillation frequency based on feedback from the frequency comparator to maintain a constant frequency difference, allowing the system to adapt to temperature changes while preserving measurement accuracy without excessive structural complexity.
Solution Approach 2:
The patent implements feedback through the frequency comparator that continuously monitors the frequency difference between the first and second oscillation modules. When the frequency difference deviates from the expected value due to temperature changes, the comparator provides feedback to the control module, which then adjusts the second oscillation frequency to restore the constant frequency difference, thereby maintaining measurement accuracy.
2Measurement precision
If the radar liquid level measuring apparatus uses temperature compensation mechanisms, then the measurement accuracy is maintained under temperature changes, but the device complexity increases
Solution Approach 1:
The patent applies parameter changes by adjusting the frequency parameter of the second oscillation module in response to temperature changes. Instead of using physical compensation mechanisms, the system changes the operational parameter (frequency) dynamically to compensate for environmental effects, maintaining measurement accuracy with minimal additional hardware complexity.
Solution Approach 2:
The patent substitutes mechanical or physical compensation mechanisms with an electronic control system. Rather than using mechanical components to physically compensate for temperature effects, the system uses electronic frequency adjustment through the control module and frequency comparator, reducing mechanical complexity while maintaining measurement precision.
3Ease of operation
If the radar liquid level measuring apparatus uses fixed frequency difference, then the device operation is simple, but the functionality becomes abnormal when environment changes violently
Solution Approach 1:
The patent applies dynamics by implementing a dynamic frequency adjustment mechanism that maintains a constant frequency difference between oscillation modules despite environmental changes. The control module continuously adapts the second oscillation frequency based on feedback, ensuring reliable functionality while keeping the operational principle straightforward and easy to understand.
Data Source
AI summary
A radar liquid level measuring apparatus (10) includes a first oscillation module (102), a second oscillation module (104), a frequency comparator (106) and a control module (107). The first oscillation module (102) has a first oscillation frequency. The first oscillation module (102) generates a first pulse signal (10202). The second oscillation module (104) has a second oscillation frequency. The second oscillation module (104) generates a second pulse signal (10402). The frequency comparator (106) converts the first pulse signal (10202) and the second pulse signal (10402) into an adjusted signal (10602). The control module (107) compares the adjusted signal (10602) with an expectation value (10818) to obtain a comparative result signal. According to the comparative result signal, the control module (107) adjusts the second oscillation frequency, so that the second oscillation frequency and the first oscillation frequency have a constant frequency difference.