Radar Circuit With ASIC Power Switching for Adaptive Measurement
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Solution Overview
Problem
Measuring devices in industrial and private environments, such as radar level gauges, face energy efficiency challenges due to limited energy supply, often requiring reduced measurement frequencies and delayed recording of level changes.
Innovation Solution
A radar circuit comprising a radar chip, an application-specific integrated circuit (ASIC), and a processor, where the ASIC performs control and detection tasks, optimizing energy usage by switching components on and off as needed, and supporting different radar chips with various frequencies, enabling energy-efficient operation even with limited energy sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If measurement frequency is reduced to save energy, then energy consumption decreases, but measurement accuracy and responsiveness deteriorate
Solution Approach 1:
The patent implements dynamic measurement intervals where the radar circuit adapts its measurement frequency based on detected changes. When no level changes are detected, measurements are spaced further apart to save energy. When changes are detected, the system increases measurement frequency to accurately track the changes, thus resolving the contradiction between energy saving and measurement accuracy
Solution Approach 2:
The system uses periodic measurements with variable intervals instead of continuous or fixed-interval measurements. The measurement cycle is dynamically adjusted based on the detection of level changes, allowing the system to enter low-power states during stable conditions while maintaining measurement accuracy when changes occur
2Use of energy by moving object
If measurement pause is extended to save energy, then energy consumption decreases, but response time to detect level changes increases
Solution Approach 1:
The measurement pause duration is made dynamic rather than fixed. The system continuously monitors for level changes and adjusts the pause length accordingly. When changes are detected during a pause, the system immediately initiates a new measurement, ensuring rapid response to actual level changes while maintaining extended pauses during stable conditions to conserve energy
3Measurement precision
If continuous monitoring is implemented to maintain measurement accuracy, then measurement accuracy is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system implements periodic measurements with intelligently variable intervals. The radar circuit performs measurements at scheduled intervals that are dynamically adjusted based on system state, achieving adequate monitoring coverage without the energy cost of continuous operation
Solution Approach 2:
The system uses the measurement results themselves to control its own operation. When measurements indicate stable conditions, the system automatically extends measurement intervals to save energy. When changes are detected, the system self-adjusts to increase measurement frequency, making the monitoring intensity self-regulated based on actual needs
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 allows for energy-efficient operation of radar measuring devices by optimizing energy consumption and supporting multiple frequency ranges, ensuring continuous monitoring with reduced energy requirements, suitable for use in industrial automation and logistics applications.
Implementation Method 1
radar circuits that generate a radar measurement signal, which is then emitted via a corresponding antenna
Implementation Method 2
the ASIC has a phase-locked loop (PLL)... the ASIC is configured to supply a voltage-controlled oscillator (VCO) of the radar chip
Data Source
AI summary
A radar circuit for a measuring device is provided, including: a radar chip, configured to generate a radar measurement signal; an application-specific integrated circuit (ASIC); and a processor, configured to determine a measured value, the ASIC and the radar chip being separate components.