Vehicle Inspection Device Buffer Management for ECU Communication Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle inspection devices face reduced communication efficiency when inspecting multiple electronic control units and writing control programs, due to unequalized communication speeds and additional delays in determining pass or fail of inspection items, making high-speed and high-efficiency communications challenging, especially in production and repair plant settings.
Innovation Solution
A vehicle inspection device with an inspection processing section and a communication processing section that generates and manages distinct communication requests for inspection and program writing, utilizing buffers to store and transmit requests efficiently, allowing concurrent inspections and program writing across multiple electronic control units, and switching between inspection and program writing modes to optimize communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vehicle inspection device transmits control programs to electronic control units, then the function of writing control programs is achieved, but the communication efficiency is reduced due to large data size
Solution Approach 1:
The patent divides communication requests into two distinct types: inspection requests with small data size and control program writing requests with large data size. This segmentation allows the system to handle different communication tasks through dedicated processing paths, preventing large program data from slowing down inspection communications.
Solution Approach 2:
The communication processing section dynamically switches between inspection mode and program writing mode based on the type of communication request. This dynamic adaptation allows the system to optimize communication parameters and buffer management according to the current task, maintaining high efficiency regardless of whether transmitting small inspection data or large program files.
2Measurement precision
If the vehicle inspection device determines pass or fail for each inspection item sequentially, then inspection accuracy is maintained, but additional communication delays occur
Solution Approach 1:
The inspection processing section generates multiple inspection communication requests in advance and stores them in a buffer. Instead of waiting for each response before generating the next request, the system prepares a queue of inspection tasks that can be processed sequentially without idle waiting time, reducing overall communication delay while maintaining accurate pass/fail determination for each item.
3Reliability
If separate devices are used for inspection and control program writing, then each function can be optimized independently, but device complexity and operational complexity increase
Solution Approach 1:
The patent combines the inspection device and control program writing device into a single integrated vehicle inspection device. The communication processing section handles both inspection requests and program writing requests through unified communication interfaces and buffer management, eliminating the need for separate devices while maintaining the reliability of both functions.
Solution Approach 2:
The communication processing section is designed with universal functionality to handle multiple types of communication requests: inspection requests, program writing requests, and response reception. This multi-functional design allows a single device to perform both inspection and program writing operations, reducing system complexity while maintaining optimized performance for each function.
Data Source
AI summary
A vehicle inspection device includes an inspection processing section and a communication processing section. The inspection processing section includes an inspection control section that generates a first communication request or a second communication request based on an inspection program, a communication request transmission buffer that stores the first communication request, and a transmission buffer for high-speed communication that stores the second communication request. The communication processing section transmits the first communication request to an ECU to be inspected and transmits the second communication request to an ECU on which writing is to be performed.