Centralized Radar Analysis Unit for Scalable Vehicle Sensor Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radar sensors in vehicles face scalability issues due to poor scaling of computing power and memory with increased performance demands, leading to higher costs, larger size, and power losses when multiple sensors are used for advanced driver assistance and automated driving functions.
Innovation Solution
A radar system design where radar sensor heads primarily digitize and transmit received radar waves to a central control unit for processing, minimizing local processing and leveraging the central unit's increased computing power, allowing for scalable and flexible system expansion with improved price-performance ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If extensive data processing is performed inside each radar sensor, then data transmission volume is reduced, but computing power requirements and memory size increase significantly
Solution Approach 1:
The patent extracts the complex analysis unit from the distributed radar sensor heads and relocates it to a central control unit. Each sensor head retains only minimal processing components (analog-to-digital converter), while the computationally intensive Fourier transformations and object analysis are performed centrally. This resolves the contradiction by maintaining reduced data transmission (only raw digitized signals are transmitted) while eliminating the need for high computing power and large memory in each sensor.
2Productivity
If microprocessor technology is used to increase processing performance, then computing capability improves, but cost, size, and power consumption increase
Solution Approach 1:
The patent merges multiple distributed processing units into a single central analysis unit. Instead of each radar sensor having its own microprocessor for complex signal processing, all sensors feed their digitized signals to one centralized analysis unit. This consolidation achieves the required processing performance while reducing total power consumption, cost, and size compared to having high-performance processors in each sensor node.
3Reliability
If multiple radar sensors are installed to improve performance, then detection capability increases, but system cost and complexity increase
Solution Approach 1:
The patent creates a universal central analysis unit that can process signals from any number of radar sensor heads through the same data line interface. This multi-functional architecture allows the system to scale from one to multiple sensors without increasing per-sensor complexity. The central unit handles all detection, tracking, and analysis functions for all sensors, achieving improved detection capability while keeping individual sensor units simple and cost-effective.
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 reduces costs and power consumption in radar sensor heads while enabling more complex algorithms and flexible signal processing in the central unit, enhancing the radar system's performance and scalability without compromising performance.
Implementation Method 1
at least one transmit antenna (8) for producing radar waves
Implementation Method 2
at least one receive antenna (14) for receiving radar waves
Implementation Method 3
the at least one radar sensor head (2) has an analog-digital converter (18) for converting radar waves received by the at least one receive antenna (14) into digital measurement data
Data Source
AI summary
A radar system for a vehicle, having at least one central control unit for sending data and for processing received data, at least one radar sensor head that is situated at a distance from the at least one central control unit and that has at least one transmit antenna for producing radar waves and at least one receive antenna for receiving radar waves, and having at least one data line between the at least one central control unit and the at least one radar sensor head, the at least one radar sensor head having an analog-digital converter for converting radar waves received by the at least one receive antenna into digital measurement data, and the external control unit having at least one analysis unit connected downstream from a data line for carrying out a processing step over at least a part of the digital measurement data.