Variable-Echo Radar Reflector for Construction Site Vehicle Maneuvers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radar reflectors are difficult for workers to adapt to changing conditions in construction sites, limiting their ability to specify complex driving maneuvers for automated vehicles.
Innovation Solution
A radar reflector with adjustable parameters (angular velocity, effective reflecting area, and fastening position) that can generate variable radar echoes, allowing for easy specification of driving maneuvers without expert knowledge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radar reflectors are made robust and easy to handle with fixed parameters, then reliability and ease of operation are improved, but adaptability to changing construction site conditions deteriorates
Solution Approach 1:
The radar reflector incorporates adjustable parameters including rotation speed of the reflection element, effective reflecting area, and fastening position. These dynamic adjustments allow the reflector to adapt to changing construction site conditions while maintaining robust operation. The reflection element can rotate at variable speeds and the effective reflecting area can be modified to specify different driving maneuvers.
Solution Approach 2:
The invention changes physical parameters of the radar reflector system including rotation speed of the reflection element, effective reflecting area, and fastening position. By varying these parameters, the radar echo characteristics are modified to convey different instructions to automated vehicles, enabling adaptability without compromising operational reliability.
2Device complexity
If radar reflectors use fixed parameters, then device complexity is reduced, but ability to specify complex driving maneuvers deteriorates
Solution Approach 1:
The radar reflector employs dynamic parameters including variable rotation speed of the reflection element and adjustable effective reflecting area. These dynamic features enable complex driving maneuver specification while maintaining relatively simple device structure compared to electronic communication systems.
Solution Approach 2:
The invention uses parameter changes in rotation speed and effective reflecting area to encode different driving maneuver instructions. This approach enables complex specification capabilities through simple physical parameter variations rather than complex electronic programming.
3Manufacturing precision
If radar reflectors require expert knowledge for configuration, then measurement precision and manufacturing precision are improved, but ease of operation deteriorates
Solution Approach 1:
The radar reflector system enables workers to independently configure and adapt the device to changing conditions without requiring expert knowledge. The adjustable parameters can be modified by workers on-site to specify driving maneuvers, making the system self-sufficient and easy to operate.
Solution Approach 2:
The invention allows workers to change physical parameters such as rotation speed and effective reflecting area to adapt the radar reflector to different conditions. These parameter changes enable easy operation and adaptation without requiring specialized expertise in radar technology or programming.
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 easy adaptation to local conditions, facilitating automated vehicle operation by generating multiple radar echo characteristics for specifying driving commands, reducing technical effort and cost.
Implementation Method 1
at least one reflection element rotatable about a central axis of the radar reflector for reflecting radar radiation. At least a portion of the radar radiation incident on the radar reflector is reflected or rebounded by the reflection element
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a radar reflector (1) for reflecting radar radiation (2), comprising at least one reflection element (5) rotatable about a central axis (4) of the radar reflector (1) and an adjusting device (7) for changing and/or parameterizing a characteristic of a radar echo (3) of the radar reflector (1). At least one of the following parameters can be changed by means of the adjusting device (7): the angular velocity ω of rotational motion of the at least one reflection element (5) about the central axis (4); an effective reflection area of the at least one reflection element (5); and a fastening position p of the at least one reflection element (5) relative to the central axis (4). The invention also relates to a system for controlling automated operation of a motor vehicle, comprising at least one radar reflector of this type, and to a motor vehicle (23), which has a radar sensor (24) and is designed to automatedly carry out a predefined sequence of driving maneuvers in accordance with a sensed characteristic of the radar echo of the radar reflector.