Radar Signal Quality Control for Object Detection
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Solution Overview
Problem
Current radar technologies face challenges in accurately detecting objects by improving the detection accuracy of reflected waves, particularly in determining the distance and quality of the reception signal, which affects the precision of object detection in various mobility devices.
Innovation Solution
An electronic device equipped with a transmission antenna, reception antenna, signal processor, and controller that calculates distance and determines signal quality to adjust the operation mode for transmitting waves, enhancing object detection accuracy by optimizing the radar operation based on the determined distance and signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radar transmits waves continuously to maintain constant object detection capability, then the detection coverage is maintained, but the detection accuracy deteriorates when objects are at varying distances
Solution Approach 1:
The radar device dynamically switches between a first operation mode (first waveform) and a second operation mode (second waveform) based on the detected distance to the object. When the object is within a predetermined distance range, the first operation mode is used; otherwise, the second operation mode is used. This dynamic adaptation resolves the contradiction by adjusting the detection parameters according to the actual distance, maintaining both coverage and accuracy.
Solution Approach 2:
The patent changes the waveform parameter based on the distance to the object. The first waveform and second waveform have different characteristics optimized for different distance ranges. By changing the waveform parameter according to the detected distance, the system achieves high detection accuracy across varying distances while maintaining reliable detection coverage.
2Device complexity
If the radar uses a single operation mode to simplify the system, then the device complexity is reduced, but the detection accuracy deteriorates for objects at different distances
Solution Approach 1:
The system dynamically selects between two operation modes based on the detected distance, avoiding the need for a complex multi-mode system while maintaining high detection accuracy. The dynamic switching based on a simple distance threshold keeps the device complexity low while achieving adaptive detection performance.
Solution Approach 2:
The patent uses parameter changes (switching between first and second waveforms) to achieve high detection accuracy without requiring a complex system with many operation modes. By changing only the waveform parameter based on distance, the system maintains simplicity while improving precision.
3Measurement precision
If the radar adjusts operation mode frequently to optimize detection accuracy, then the detection precision is improved, but the loss of time for mode switching increases
Solution Approach 1:
The system dynamically switches operation modes based on distance changes, but only when necessary (when the object enters or exits the predetermined distance range). This dynamic approach improves detection precision while minimizing mode switching time by avoiding unnecessary transitions.
Solution Approach 2:
The patent changes the waveform parameter only when the distance to the object crosses the predetermined threshold, rather than frequently adjusting parameters. This selective parameter change approach maintains high detection accuracy while reducing the time loss associated with mode switching.
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 object detection accuracy by dynamically adjusting the radar operation mode based on signal quality and distance, leading to more precise detection of objects, even at varying distances and velocities, thereby enhancing safety and automation in mobility devices.
Implementation Method 1
A transmission antenna 25 transmits a transmission wave T
Implementation Method 2
A reception antenna 31 receives a reception signal R that is the transmission wave T having been reflected
Implementation Method 3
a radar (Radio Detecting and Ranging) technology for measuring a distance or the like to an object such as an obstacle by transmitting a radio wave such as a millimeter wave and then receiving a reflected wave reflected off the object
Data Source
AI summary
An electronic device includes a transmission antenna, a reception antenna, a signal processor, a quality determining unit, and a controller. The transmission antenna transmits a transmission wave. The reception antenna receives a reflected wave that is the transmission wave having been reflected. The signal processor calculates, based on a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave, a distance between the electronic device and an object that reflects the transmission wave. The quality determining unit determines a quality of the reception signal. The controller performs control for transmitting the transmission wave in an operation mode corresponding to the distance between the electronic device and the object, based on the quality of the reception signal determined by the quality determining unit.