Distance Profile Recording Deflection Unit Scanning Patterns
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Solution Overview
Problem
Current scanning apparatuses face limitations in achieving high scanning speed while maintaining high resolution, particularly when detecting fast-moving objects, due to limitations in transmitter frequency and mechanical constraints, often requiring a trade-off between scanning speed and resolution.
Innovation Solution
The apparatus employs a deflection unit to generate scanning patterns with distance image points spaced apart in the scanning direction, allowing for increased scanning speed and flexibility in resolution, with the deflection unit being adapted to displace scanning patterns and overlap them for efficient data collection, enabling high-speed scanning without compromising resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the transmitter frequency and mechanical scanning speed are increased to detect fast-moving objects, then the scanning speed is improved, but the resolution deteriorates due to limitations in transmitter frequency and mechanical constraints
Solution Approach 1:
The patent divides the scanning process into multiple overlapping scanning patterns, where each pattern covers a portion of the total scanning angle. By segmenting the measurement into multiple passes with different angular ranges, the system can collect sufficient data points at high speed while maintaining resolution through the overlap between patterns. This allows the apparatus to achieve high scanning speeds without sacrificing measurement precision.
Solution Approach 2:
The patent introduces temporal dimension by collecting distance image points at different times during multiple scanning patterns. Instead of requiring all points to be collected simultaneously in a single high-speed pass, the system accumulates data across multiple scanning cycles, using the time dimension to resolve the contradiction between speed and resolution. The evaluation unit combines data from multiple temporal snapshots to reconstruct high-resolution profiles.
2Adaptability or versatility
If the scanning angle coverage is increased to improve object detection completeness, then the detection capability is improved, but the scanning time increases
Solution Approach 1:
The patent performs preliminary scanning with a first scanning pattern to obtain initial distance image points before executing the second scanning pattern. This preliminary action allows the system to quickly cover a large angular range initially, then refine the measurement in subsequent patterns. The preliminary scan establishes a baseline that reduces the time needed for complete detection while maintaining accuracy.
Solution Approach 2:
The patent ensures continuous data collection by overlapping scanning patterns, where the second pattern overlaps with the first. This continuity eliminates gaps in detection and allows the system to maintain high detection capability throughout the extended angular range without proportionally increasing total scanning time, as data collection proceeds continuously across pattern transitions.
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 approach enables high-speed scanning with maintained or improved resolution, allowing for efficient detection of fast-moving objects and flexible configuration to meet scanning requirements, including the ability to perform both coarse and fine scans as needed.
Implementation Method 1
determining distances of objects at which the transmitted radiation is reflected, with the distances each forming a distance image point
Implementation Method 2
a plurality of transmitters arranged in an array respectively for the transmission of electromagnetic radiation into a recording region
Data Source
AI summary
An apparatus for recording distance profiles respectively having a plurality of distance image points comprises: (i) a plurality of transmitters arranged in an array respectively for the transmission of electromagnetic radiation into a recording region; (ii) at least one reception unit for the detection of radiation reflected from the recording region; (iii) an evaluation unit for determining distances of objects at which transmitted radiation is reflected, with the distances each forming a distance image point; and (iv) a deflection unit which deflects the transmitted radiation within a scanning angle region into a scanning direction in order to consecutively generate, per distance profile, a plurality of scanning patterns of distance image points that are displaced against one another in the scanning direction and that each image the transmitter array, wherein at least a few of the distance image points are spaced apart from one another in the scanning direction.