Pulse Radar Ranging for Vibration Measurement
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Solution Overview
Problem
Current vibration measurement methods in intelligent automation systems, such as accelerometers and laser interferometers, face limitations in accuracy and reliability due to environmental factors like humidity and light sources, and are not suitable for future intelligent automated factories.
Innovation Solution
A pulse radar ranging apparatus and algorithm that uses a radio frequency pulse generator, filter, switch, and transceiver antenna to detect distance and tiny vibration amplitudes by processing time-domain waveforms, employing polynomial interpolation for precise distance calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laser interferometer is used for vibration measurement, then measurement capability is provided, but measurement accuracy deteriorates due to environmental factors like humidity and light sources
Solution Approach 1:
The patent replaces the optical-based laser interferometer with a radar-based measurement system. The radar system uses electromagnetic waves instead of light waves to measure vibration, substituting an optical measurement system with an electromagnetic wave-based system that is less sensitive to environmental optical interference.
Solution Approach 2:
The patent changes the measurement parameter from optical wavelength to radar wavelength. By using radio frequency electromagnetic waves with longer wavelengths compared to visible light, the system achieves measurement capability that is less affected by environmental factors such as humidity and ambient light sources.
2Ease of manufacture
If accelerometer is used for vibration measurement, then embedded sensing is achieved, but application flexibility deteriorates due to limitations in future intelligent automated factories
Solution Approach 1:
The patent creates a universal measurement system that can measure both static distance and dynamic vibration without requiring different sensors. The radar system can operate in various environments and measure different types of motion, providing multi-functionality that exceeds the application flexibility of accelerometers in future intelligent automated factories.
3Measurement precision
If pulse radar ranging apparatus is used, then distance detection accuracy is improved, but device complexity increases due to signal processing requirements
Solution Approach 1:
The patent applies preliminary signal processing techniques including band-pass filtering to remove noise before distance calculation, and polynomial interpolation to smooth the distance data. These preliminary actions are taken before final measurement output to improve accuracy while managing complexity through systematic signal conditioning.
Solution Approach 2:
The patent implements feedback mechanisms where the measured distance and vibration data are continuously processed and used to adjust measurements in real-time. The signal processing system uses feedback from the received echo signals to refine distance calculations and detect vibration patterns, improving precision through iterative refinement.
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 accurately detects distance and tiny vibration amplitudes, overcoming environmental interference and providing precise control for automation systems.
Implementation Method 1
The transceiver aerial is coupled to the radio frequency switch, and transmits the radio frequency pulse reference signal that is controlled by a first digital signal
Implementation Method 2
The radio frequency filter is coupled to the radio frequency pulse generator, and receives the pulse signal and generates a high-pass filter signal, where the high-pass filter signal includes a radio frequency pulse reference signal
Data Source
AI summary
A pulse radar ranging apparatus and a ranging algorithm thereof are provided. The pulse radar ranging apparatus includes a radio frequency pulse generator, a radio frequency filter, a radio frequency switch and a transceiver aerial. The radio frequency pulse generator generates a pulse signal. The radio frequency filter receives the pulse signal and generates a high-pass filter signal, wherein the high-pass filter signal includes a radio frequency pulse reference signal. The radio frequency switch controls an output of the radio frequency pulse reference signal. The transceiver aerial transmits the radio frequency pulse reference signal. The radio frequency pulse reference signal contacts an object and generates a return signal, and the transceiver aerial receives the return signal. The ranging algorithm processes and analyzes the signals obtained by the pulse radar ranging apparatus, and calculates a distance between pulse radar ranging apparatus and the object by using polynomial interpolation.