Active Sensor Shaded Region Correction
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Solution Overview
Problem
Active sensor systems with multiple emitter units face challenges in effectively utilizing shaded regions, leading to measurement inaccuracies and reduced reliability due to incorrect interpretation of reflections from these areas as noise.
Innovation Solution
The system identifies shaded sections within the sensor field of view by analyzing detector signals from multiple emitter units and generates correction data to improve the reliability of measurement data sets, accounting for regions that are partially or fully shaded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple emitter units are used to enlarge detection range, then measurement precision is improved through redundancy, but shaded regions cannot be effectively used for object detection leading to reduced reliability
Solution Approach 1:
The computing unit performs preliminary identification of shaded sections in the sensor field of view before generating the measurement data set. By detecting which regions are shaded with respect to each emitter unit and preprocessing this spatial information, the system can then appropriately handle reflections from these regions, preventing misinterpretation as noise and improving overall measurement reliability.
2Area of stationary object
If shaded regions are used for object detection, then sensor field of view is enlarged, but reflections from shaded regions are incorrectly interpreted as noise reducing measurement reliability
Solution Approach 1:
The system applies different processing quality to different regions of the sensor field of view. Shaded sections are identified and treated differently from non-shaded regions - reflections from shaded regions are specifically handled to prevent misinterpretation as noise, while maintaining the expanded field of view coverage. This localized quality adjustment preserves measurement reliability across the entire enlarged detection area.
3Area of stationary object
If multiple emitter units emit measurement signals into overlapping spatial regions, then detection range is enlarged, but shaded sections reduce the effective usability of the sensor field of view
Solution Approach 1:
The computing unit continuously analyzes detector signals to identify shaded sections and uses this feedback information to adjust measurement data set generation. By monitoring which regions are shaded with respect to each emitter unit and incorporating this information into the data processing pipeline, the system maximizes the effective usability of the enlarged detection range created by multiple emitter units.
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 enhances the reliability of measurement data sets and effectively increases the usable sensor field of view, improving object detection and characterization, especially in applications like partially or fully automated motor vehicle control, by accurately accounting for shaded regions.
Implementation Method 1
The first emitter unit is configured to emit a first measurement signal into a first emission spatial region... The second emitter unit is configured to emit a second measurement signal into a second emission spatial region
Implementation Method 2
portions of the first measurement signal and/or of the second measurement signal which are reflected in the sensor field of view
Implementation Method 3
The detector unit is configured to generate at least one detector signal on the basis of portions of the first measurement signal and/or of the second measurement signal which are reflected
Data Source
AI summary
An active sensor system (1) has a first and a second emitter unit (2, 2′), as well as a detector unit (3, 3′) and a computing unit (4). The emitter units (2, 2′) are configured to emit respective measurement signals into corresponding emission spatial regions (A1, A2). The detector unit (3, 3′) is configured to generate at least one detector signal on the basis of reflected portions of the measurement signals, and the computing unit (4) is configured to generate a measurement data set on the basis of the at least one detector signal. The computing unit (4) is configured to identify at least one section (T1, T1′, T2) that is shaded with respect to at least one of the emitter units (2, 2′). The computing unit (4) is configured to generate the measurement data set taking into account the section (T1, T1′, T2) and/or to generate correction data for correcting the measurement data set.