Vehicle Radar Sensor Time-Multiplexing Interference Reduction
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Solution Overview
Problem
Existing vehicle surroundings sensor systems often interfere with each other, leading to destructive superimposition of radar waves and reduced signal quality, which compromises the detection capabilities and road safety.
Innovation Solution
A method and device that receive a signal from an external processing unit to influence the first vehicle's surroundings sensor system, allowing it to operate independently of other systems by comparing and adapting to the quality of identical or comparable second sensor systems, thereby reducing interference and enhancing detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple vehicle surroundings sensor systems operate simultaneously using radar waves, then comprehensive surroundings detection is achieved, but destructive superimposition of radar waves occurs leading to reduced signal quality
Solution Approach 1:
The patent implements periodic action by alternating the operation of radar sensors between different vehicles in time-multiplexed cycles. Each vehicle's radar system is activated only during its assigned time slot, creating a periodic on-off pattern that prevents continuous wave interference while maintaining comprehensive detection coverage across the vehicle platoon.
Solution Approach 2:
The system dynamically adjusts the operational state of each vehicle's surroundings sensor system based on real-time conditions and pre-assigned time slots. The radar sensors transition between active and inactive states dynamically, allowing flexible adaptation to different traffic scenarios while preventing destructive interference through coordinated temporal scheduling.
2Measurement precision
If radar sensors are activated continuously for optimal detection, then detection accuracy is improved, but signal quality deteriorates due to superimposition with other vehicles' radar waves
Solution Approach 1:
The patent applies periodic action by implementing cyclic activation patterns where each vehicle's radar sensor operates at full power only during its designated time slot, then remains inactive during other vehicles' slots. This periodic full-power operation maintains detection accuracy during active periods while eliminating continuous interference that would degrade signal quality.
Solution Approach 2:
The system maintains continuity of useful action by ensuring that while individual vehicles alternate their radar operation, the collective platoon maintains continuous surroundings monitoring through coordinated time-multiplexed detection cycles. Each vehicle's radar provides full-power detection during its slot, and the sequence continues without gaps to maintain overall surveillance continuity.
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 improves the robustness and reliability of vehicle sensor systems, leading to better and faster surroundings detection, reducing interference, and enhancing road safety for all involved vehicles.
Implementation Method 1
radar sensors are utilized for detecting the surroundings and the radar waves are superimposed onto one another in such a way that a destructive disruption of the radar waves results
Implementation Method 2
the radar waves are superimposed onto one another in such a way that a destructive disruption of the radar waves results
Data Source
AI summary
In a method and a device for operating a first vehicle, a method includes receiving a signal from an external processing unit for influencing a first surroundings sensor system of the first vehicle, influencing the first surroundings sensor system dependent on the received signal, receiving surroundings data values detected by at least one second surroundings sensor system of a second vehicle and that at least partially represent surroundings of the first vehicle, and operating the first vehicle dependent on the influence of the first surroundings sensor system and the received surroundings data values.