Vehicle Network Data Storage for Expandable Capacity
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Solution Overview
Problem
Conventional motor vehicle control devices face limitations in data storage capacity and redundancy, as their embedded memory is often insufficient and not easily expandable, making it difficult to manage large data sets like current map data and software updates efficiently and securely.
Innovation Solution
A method and device that utilizes the vehicle network to access and distribute data storage across domain control devices, such as infotainment systems, via communication bus systems like CAN, LIN, MOST, FlexRay, or Ethernet, enabling a central or distributed data memory that can be accessed by various control devices using protocols like NFS, SMB/CIFS, or service-oriented communication, allowing for error recognition and removal, and secure data management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If embedded memory devices (RAM, ROM, EEPROM) are used in control devices, then data storage is available for control operations, but storage capacity is insufficient and not easily expandable
Solution Approach 1:
The storage system is segmented into multiple independent storage locations distributed across different domain control devices in the vehicle network. Each domain control device maintains its own storage resources, which can be independently accessed by control devices needing storage capacity. This segmentation allows individual storage units to be optimized for specific domains while providing overall system expandability.
Solution Approach 2:
Storage locations in domain control devices are designed to serve multiple functions and multiple control devices simultaneously. The same storage resource can be accessed by different control devices for different purposes through the vehicle network, making the storage system universal and highly adaptable to various storage needs without requiring dedicated storage for each control device.
2Quantity of substance
If storage equipment of embedded control devices is used, then local data storage is available, but storage volume is too small for large data sets like map data and software updates
Solution Approach 1:
Domain control devices act as intermediaries between control devices needing storage and the actual storage locations. The domain control device manages access requests, data transfer, and storage operations through the vehicle network, enabling control devices to access large storage volumes remotely without requiring physically large local storage equipment in each control device.
Solution Approach 2:
The storage system transitions from a single-dimension local storage model (storage physically attached to each control device) to a multi-dimensional distributed storage model where storage locations are distributed across the vehicle network. Control devices can access storage in any domain through the network, effectively adding the network dimension to storage access and enabling large data sets to be stored and managed efficiently across the entire vehicle system.
Data Source
AI summary
In a method for storing data in a motor vehicle: an application software executed on a control device of the motor vehicle connects, via a communication network of the motor vehicle, to a data storage device of the motor vehicle; the application software logically connects the connected data storage device to the control device; the application software accesses the connected data storage device via the communication network, and the application software optionally releases the connected data storage device.