Vehicle Diagnosis Bus Selection Across Multiple Protocols
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Solution Overview
Problem
Automobile diagnosis devices are limited in their ability to support diagnosis of different automobile types due to compatibility issues with various communication protocols.
Innovation Solution
The device incorporates an automatic diagnosis circuit to acquire vehicle identification information, a standard communication bus circuit, and multiple diagnostic communication bus circuits (such as 24V CAN, FDCAN, PLC, and DoIP) that support different communication protocols, allowing the controller to select the appropriate bus circuit for communication with the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the automobile diagnosis device supports multiple communication protocols for different automobile types, then the universality of the diagnosis device is improved, but the device complexity increases
Solution Approach 1:
The patent divides the communication interface into multiple independent bus circuits (24V CAN bus circuit, FDCAN bus circuit, PLC bus circuit, DoIP bus circuit), each supporting a specific communication protocol. This segmentation allows the device to handle different automobile types through dedicated circuits while maintaining overall system manageability.
Solution Approach 2:
The diagnosis device is designed with multiple communication bus circuits that can support different communication protocols simultaneously. The controller can select and switch between these circuits based on the automobile type being diagnosed, making the device universally applicable to various automobile types without requiring separate diagnosis devices for each protocol.
2Adaptability or versatility
If the device uses multiple diagnostic communication bus circuits for different protocols, then the ability to diagnose different automobile types is improved, but the ease of operation deteriorates
Solution Approach 1:
The device automatically identifies the automobile type and selects the appropriate communication bus circuit before diagnosis begins. This preliminary automatic selection eliminates the need for operators to manually configure or select communication protocols, simplifying the operation process while maintaining support for multiple automobile types.
Solution Approach 2:
The controller automatically performs the selection and switching between different communication bus circuits based on the detected automobile type, making the system self-configuring. This self-service capability reduces operator burden and maintains multi-protocol support without complicating the user interface or operation procedure.
Data Source
AI summary
Disclosed are an automobile diagnosis device, system and method. The automobile diagnosis device includes: an automatic diagnosis circuit for acquiring vehicle identification information of an automobile to be diagnosed; a standard communication bus circuit electrically connected to the automatic diagnosis circuit; several diagnostic communication bus circuits including at least one of a 24V CAN bus circuit, an FDCAN bus circuit, a PLC bus circuit and a DoIP bus circuit; a communication module; and a controller. The controller is electrically connected to the automatic diagnosis circuit, the standard communication bus circuit, each diagnostic communication bus circuit and the communication module respectively. The controller is configured to select a target communication bus circuit according to the vehicle identification information and communicate with the automobile to be diagnosed.