Vehicle Sensor Data Prioritization Under Bus Load Constraints
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Solution Overview
Problem
Modern motor vehicles face inefficiencies in processing and transferring sensor data from multiple sensors, leading to increased load on data buses and higher production costs, which can impact the performance of driver assistance systems.
Innovation Solution
A method and device that assess the information requirement based on transferred sensor data and bus load to prioritize and request only necessary sensor data, reducing data exchange and bus load by selectively transferring relevant data from prioritized sensors and data content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of sensors is increased to obtain more sensor data, then the amount of sensor data to be transferred increases, but the load on the data bus increases and transfer efficiency decreases
Solution Approach 1:
The processing unit determines information requirements and generates prioritization requests before the actual data transfer occurs. By pre-assessing what information is needed and prioritizing sensor data accordingly, the system prepares the data transfer schedule in advance, ensuring that only relevant data is transferred with appropriate priority levels, thus maintaining high transfer efficiency while handling large volumes of sensor data
Solution Approach 2:
The system implements a feedback mechanism where the processing unit continuously determines information requirements based on current driving situations and adjusts the prioritization of sensor data requests accordingly. This closed-loop approach allows the system to dynamically optimize data transfer by sending requests for additional sensor data based on determined information requirements and current bus load conditions, ensuring efficient utilization of data bus resources
2Productivity
If additional data buses are added to handle increased sensor data, then data transfer capacity increases, but production costs increase
Solution Approach 1:
The system dynamically adjusts data transfer priorities and bus load management based on real-time information requirements and current bus conditions. By implementing adaptive prioritization mechanisms that can respond to changing demands, the existing data bus infrastructure is utilized more efficiently, eliminating the need for additional data buses and thereby avoiding increased production costs while maintaining high data transfer capacity
Solution Approach 2:
The system changes operational parameters such as data prioritization levels, request timing, and transfer scheduling based on determined information requirements and bus load conditions. By optimizing these parameters, the existing data bus infrastructure achieves higher effective capacity without requiring additional hardware, thus avoiding increased production costs while maintaining high data transfer capability
Data Source
AI summary
A method for situation-based processing of sensor data from a motor vehicle. Sensor data generated by sensors relating to the situation in the surroundings of the motor vehicle is transferred to a processing unit via a bus. The processing unit takes into account the transferred sensor data to determine an information requirement, and generates a request for additional sensor data on the basis of the determined information requirement and the load on the bus, and sends this request to the sensors. A corresponding device is also described.