Adaptive Sensor Spot Control for High-Speed Long-Range Detection
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Solution Overview
Problem
Existing sensor devices face challenges in simultaneously detecting objects at high speed and long distances using a single device, requiring a mode switch between high-speed and long-distance object detection.
Innovation Solution
A sensor device with a control unit that varies the drive waveform of the scanning unit's angle to adjust the spot irradiation position based on its length, allowing for adaptive control of the scanning angle to optimize detection range and speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single sensor device is used to detect objects at both high speed and long distance, then device versatility is improved, but detection performance in one mode deteriorates when switched to another mode
Solution Approach 1:
The patent applies dynamics by making the scanning unit's drive waveform adjustable and variable. The control unit dynamically changes the drive waveform based on the selected detection mode (high-speed or long-distance), allowing the system to adapt its scanning behavior to match the specific detection requirements of each mode, thereby maintaining high detection accuracy across both modes.
2Device complexity
If the scanning unit uses a fixed drive waveform, then device complexity is reduced, but the ability to optimize detection for different ranges is lost
Solution Approach 1:
The patent applies parameter changes by modifying the drive waveform parameters of the scanning unit based on the detection mode. The control unit changes parameters such as scanning speed, angle, and timing according to whether high-speed or long-distance detection is required, enabling the system to optimize detection performance for different ranges without requiring completely different hardware systems.
3Ease of operation
If the spot irradiation position is not matched to the field of view, then scanning simplicity is maintained, but detection accuracy deteriorates
Solution Approach 1:
The patent applies feedback by having the control unit adjust the scanning unit's drive waveform based on the detected spot irradiation position and field of view characteristics. The system monitors the relationship between the spot position and field of view, and feedback-adjusts the scanning parameters to ensure optimal matching, thereby maintaining high detection accuracy while keeping the scanning operation simple through automated control.
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
Enables the sensor device to switch between high-speed and long-distance detection modes, improving detection accuracy and efficiency by matching the spot irradiation position and size to the field of view, thereby enhancing object detection capabilities.
Implementation Method 1
a scanning unit; and a control unit configured to vary a drive waveform of a scanning angle of the scanning unit, which is used to move an irradiation position of a spot generated by the scanning unit in a predetermined direction
Data Source
AI summary
A control unit varies a drive waveform of a scanning angle for moving a spot irradiation position in a second direction according to a length of a spot in the second direction. Specifically, the control unit reduces the number of segments in the second direction followed by the spot irradiation position in a case where the length of the spot in the second direction is a predetermined first length, as compared with the number of segments in the second direction followed by the spot irradiation position in a case where the length of the spot in the second direction is a second length shorter than the first length.