Vehicle Radar Sensor Orientation-Based Frequency Assignment
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Solution Overview
Problem
Radar sensors in vehicles face interference issues due to the delay in processing information from GPS/GNSS and navigation systems, leading to incorrect object distance and position determination, and potential central control unit failures.
Innovation Solution
The radar sensor autonomously determines its orientation and assigns frequency sub-bands for transmissions within the sensor itself, eliminating the need for external processing and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS/GNSS and navigation system are used to determine vehicle orientation and assign frequencies through a central control unit, then frequency assignment can be achieved, but significant processing delay occurs and the system becomes complex
Solution Approach 1:
The radar sensor performs self-determination of its orientation using its own sensor (e.g., compass sensor) and autonomously selects the frequency sub-band without requiring external GPS/GNSS systems or central control units. This self-service approach eliminates processing delays and system complexity while maintaining reliable frequency assignment.
Solution Approach 2:
The invention extracts the frequency selection function from the central control unit and relocates it directly to the radar sensor. This separation removes the radar sensor from dependency on the complex central control system, reducing both processing delay and system complexity while preserving frequency assignment reliability.
2Reliability
If GPS/GNSS and navigation system with central control unit are used to manage radar sensors, then frequency assignment is possible, but the system complexity increases significantly
Solution Approach 1:
The radar sensor independently determines its own orientation and selects its frequency sub-band without requiring GPS/GNSS receivers, navigation systems, or central control units. This autonomy dramatically reduces system complexity while maintaining reliable frequency assignment through the sensor's own capabilities.
Solution Approach 2:
The invention removes the radar sensor from the complex external system chain (GPS/GNSS → navigation system → central control unit) and enables it to independently perform frequency selection based on its own orientation sensing, thereby reducing overall system complexity.
3Reliability
If central control unit processes information and assigns frequencies to radar sensors, then frequency management is achieved, but the time interval for processing becomes crucial and information may become insignificant
Solution Approach 1:
The radar sensor immediately determines its orientation and selects the appropriate frequency sub-band without any external processing delays. This instantaneous self-service approach ensures that frequency assignment remains accurate and synchronized with the sensor's actual orientation, preventing information obsolescence.
Solution Approach 2:
The radar sensor continuously monitors its own orientation and proactively selects the appropriate frequency sub-band in advance, ensuring that frequency assignment is always current and accurate without waiting for external system processing.
4Ease of operation
If GPS/GNSS and navigation system are not directly connected to radar sensors but via central control unit, then centralized control is achieved, but failure of central control unit causes malfunction of all radar sensors
Solution Approach 1:
Each radar sensor independently determines its orientation and selects its frequency sub-band without relying on the central control unit. This self-service capability makes each sensor autonomous, so that failure of any external system does not affect radar sensor operation, thereby improving reliability while maintaining ease of operation.
Solution Approach 2:
The invention segments the frequency selection function from the central control unit and assigns it to individual radar sensors. This segmentation creates independent operational units that do not share a common point of failure, improving system reliability while preserving centralized control capabilities when needed.
Data Source
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AI summary
A method for operating a radar sensor in a vehicle, the radar sensor comprising a radar transceiver operating in an operating frequency range. The method comprises generating within the radar sensor an information related to an orientation of the radar sensor and determining an orientation of a transmission of the radar transceiver based on the information related to the orientation of the radar sensor. Further, the method comprises selecting a frequency sub-band of the operating frequency range of the radar transceiver depending on the orientation of the radar transceiver for transmitting radar signals