Automobile diagnostic method, apparatus, device and system, and diagnostic connection device
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Solution Overview
Problem
Current automobile diagnostic systems require high hardware performance and resources due to the need for protocol conversion between the link layer and physical layer in the diagnostic connection device, leading to increased hardware costs.
Innovation Solution
The protocol conversion between the link layer and physical layer is performed on the automobile diagnostic device, reducing the need for high hardware performance in the diagnostic connection device and lowering its hardware costs by shifting this process to a more resource-capable device like a personal computer or smartphone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protocol conversion between link layer and physical layer is performed in the diagnostic connection device, then data transmission capability is improved, but hardware costs increase
Solution Approach 1:
The patent extracts the protocol conversion function from the diagnostic connection device and relocates it to the automobile diagnostic device. Specifically, the link layer protocol conversion module and physical layer protocol conversion module are moved to run on the diagnostic device's operating system, allowing the connection device to use simpler, lower-cost hardware while maintaining full data transmission capability through software-based protocol conversion on the diagnostic side.
2Productivity
If high performance main chip is used in diagnostic connection device, then processing capability is improved, but hardware costs increase
Solution Approach 1:
The patent extracts the intensive processing tasks of protocol conversion from the connection device's main chip and relocates them to the diagnostic device's processor. The connection device only needs to handle basic data forwarding and physical layer signaling, which requires minimal processing capability and can be implemented with low-cost microcontrollers or even dedicated hardware circuits.
Solution Approach 2:
The patent introduces the diagnostic device as an intermediary that handles the complex protocol conversion tasks. The diagnostic device's operating system and application software act as mediators that translate between different protocol layers, allowing the connection device to use simple hardware while maintaining high processing capability through the intermediary's software intelligence.
Data Source
AI summary
Embodiments of the present invention relate to automobile diagnostic methods, apparatuses, devices and systems, and a diagnostic connection devices. Embodiments include: a first interface connector module configured to read an operation performed by a user on an interface, and convert the operation into a corresponding diagnostic instruction; a first protocol converting module configured to convert the diagnostic instruction into standard transmission data corresponding to the diagnostic instruction; and a first software interface module configured to send the standard transmission data corresponding to the diagnostic instruction through the first communication unit. Further embodiments include protocol conversion between a physical layer and a data link layer that consumes memory resources and processor resources is totally or partially run on the automobile diagnostic device, allowing the diagnostic connection device to only partially (or not at all) run the protocol conversion between the physical layer and the data link layer.