Measuring Device Adjusts Scan Range for Vibration
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Solution Overview
Problem
Existing electromagnetic wave scanning devices face challenges in accurately scanning objects at a desired distance due to inaccurate calibration and changes in device posture, such as those caused by vibration, which can result in failure to achieve the intended scan range.
Innovation Solution
The device automatically adjusts its scan range in the height direction based on received signal data to ensure that the object is scanned at a desired distance by determining the optimal emission direction of electromagnetic waves, allowing for continuous scanning even with inaccurate calibration or changes in device posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration is performed before operation, then scan accuracy at desired distance is improved, but reliability deteriorates due to inaccurate calibration or posture changes after calibration
Solution Approach 1:
The system performs preliminary scanning to detect objects at the desired distance, then uses this information to automatically adjust the scan range before actual measurement operations. This preliminary adjustment ensures accurate scanning at the target distance without requiring manual calibration, and maintains accuracy even when posture changes occur during operation.
Solution Approach 2:
The system continuously monitors scan results and automatically adjusts the scan range based on detected object distances. When objects are detected at the desired distance, the system provides feedback to modify the scan parameters, ensuring continuous accuracy without requiring re-calibration even when the device posture changes during operation.
2Ease of manufacture
If manual calibration is required, then manufacturing simplicity is improved, but ease of operation deteriorates due to need for precise calibration
Solution Approach 1:
The system performs automatic self-adjustment by detecting objects at the desired distance and autonomously modifying its scan range. This self-service capability eliminates the need for manual calibration operations, making the device easy to operate while maintaining simple manufacturing requirements.
3Device complexity
If fixed scan range is used, then device complexity is reduced, but adaptability deteriorates due to inability to compensate for posture changes
Solution Approach 1:
The system dynamically adjusts the scan range based on detected object distances and desired target distances. This dynamic adaptation allows the fixed hardware configuration to achieve variable scan ranges, compensating for posture changes without adding complex mechanical adjustment mechanisms.
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
This solution enables reliable scanning of objects at a desired distance without the need for precise calibration, maintaining accuracy and efficiency even under conditions of vibration or movement, such as in vehicles.
Implementation Method 1
a measuring unit 202 that scans an object by emitting an electromagnetic wave... based on a result of scan performed by the measuring unit 202
Implementation Method 2
calculate the intervehicular distance based on a time difference between the emission of the laser beam and the reception thereof
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A measuring device (200) includes a measuring unit (202) and a control unit (204). The measuring unit (202) performs a scan of an object by emitting an electromagnetic wave and receiving the electromagnetic wave reflected by the object. The scan is performed while changing an emission direction of the electromagnetic wave in two dimensions, in a height direction and in a lateral direction. The control unit (204) determines a scan range in a subsequent scan by the measuring unit (202) based on a received signal by the measuring unit (202) in the scan of the measuring unit (202).