Vehicle Communication Protocol Using Function Identification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communications systems for motor vehicles are costly to produce and lack efficiency in transmitting information between control devices, particularly in identifying and processing operational data without redundant information.
Innovation Solution
A communications system with a protocol that includes an operation field for task identification, an ID field for function designation, and a data field with optional omission, allowing for efficient transmission and processing of vehicle operation information without addressing specific control device hardware, using a bus system and interface module for data translation and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a comprehensive communication protocol with multiple fields (address, function, data) is used, then communication completeness is improved, but protocol complexity and production costs increase
Solution Approach 1:
The patent extracts and removes the address field from the communication protocol, keeping only the function identification field and data field. This simplification is achieved by implementing a distributed architecture where each control device independently identifies message types through function codes rather than requiring explicit addressing, thereby reducing protocol complexity while maintaining communication completeness
Solution Approach 2:
The function identification field serves multiple purposes: it identifies the message type, determines the receiving control device, and specifies the expected data format. This multi-functionality eliminates the need for separate address fields while maintaining comprehensive communication capabilities across different control devices
2Measurement precision
If all control device addresses are included in communication messages, then message routing accuracy is improved, but transmission data volume and processing overhead increase
Solution Approach 1:
The patent removes the address field from the communication protocol structure, eliminating redundant addressing information. Control devices identify messages through function codes that inherently specify the message type and intended recipient, thereby reducing transmission data volume while maintaining routing accuracy through functional identification rather than explicit addressing
3Ease of manufacture
If a simplified protocol without address fields is used, then production costs and protocol complexity are reduced, but control device identification capability may be compromised
Solution Approach 1:
The function identification field is designed to serve multiple functions simultaneously: it identifies the message type, determines the receiving control device, and specifies the data format. This multi-functionality compensates for the removal of explicit address fields, maintaining control device identification capability while simplifying the protocol and reducing production costs
Solution Approach 2:
Each control device independently interprets function codes to identify messages and determine appropriate actions without requiring external addressing information. The system self-organizes communication based on functional identification, eliminating the need for complex addressing infrastructure and reducing manufacturing complexity
Data Source
AI summary
The invention relates to a communication system for a motor vehicle for transmitting an information relating to the operation of the motor vehicle from a transmitting control device to a receiving control device. The communication system comprises an interface for the input or output of the information relating to the operation of the motor vehicle. Communication can be established via the interface by means of a protocol which comprises an operation field for identifying a task to be carried out using the information relating to the operation of the motor vehicle.