OBD-II Diagnostic Tool for Vehicle Safety State Assessment
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Solution Overview
Problem
Current emissions testing devices lack the capability to comprehensively assess the safety state of a vehicle by analyzing trouble codes from various electronic control units, which are essential for determining if a vehicle is safe for operation.
Innovation Solution
A system comprising a processor, display, and communication port configured to receive and analyze trouble codes from vehicle subsystems, determining the safety state and displaying it to the operator, while also allowing for potential hazardous items to be identified for further inspection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If emissions testing devices only analyze emissions-related data from electronic control units, then emissions testing capability is maintained, but comprehensive safety assessment capability is lost
Solution Approach 1:
The testing device is enhanced to perform multiple functions: it can analyze both emissions-related data and safety-related trouble codes from the same OBD-II port connection. The processor is configured to receive and interpret different types of diagnostic information, making the device universal for both emissions testing and safety assessment purposes.
Solution Approach 2:
The diagnostic information is segmented into different categories (emissions-related codes and safety-related codes). The processor selectively analyzes specific trouble codes based on the testing mode, allowing comprehensive data collection while maintaining focused analysis capabilities for different testing objectives.
2Measurement precision
If the system analyzes trouble codes from multiple subsystems, then safety assessment accuracy is improved, but device complexity increases
Solution Approach 1:
The existing emissions testing device structure is leveraged to perform safety assessment as well. The same processor, communication port, and display are used for both emissions testing and safety assessment, avoiding the need for separate dedicated systems and reducing overall complexity.
Solution Approach 2:
The vehicle's existing electronic control units and OBD-II system are utilized to provide the diagnostic data. The testing device taps into the vehicle's self-diagnostic capabilities rather than requiring separate sensors and detection systems, thereby simplifying the device architecture while maintaining high assessment accuracy.
3Reliability
If comprehensive safety assessment is implemented, then vehicle safety determination is improved, but testing time increases
Solution Approach 1:
The system retrieves and analyzes trouble codes that have already been stored by the vehicle's electronic control units. This preliminary diagnostic data collection has already been performed by the vehicle's own systems, so the testing device can quickly access and interpret this pre-collected information without requiring time-consuming real-time monitoring or additional data gathering steps.
Data Source
AI summary
A system and method for sending and receiving messages from an electronic control unit of a vehicle to determine if the vehicle is safe includes a processor, a display and a port. The port and display are in communication with the processor. The port is configured to communicate with the electronic control unit of the vehicle. The processor is configured to receive information from the electronic control unit of the vehicle. The information includes processing of at least one trouble code or other data from at least one subsystem of the vehicle. The processor is further configured to determine and display on the display device a safety state of the vehicle based on the received trouble codes or data from the subsystem of the vehicle.