OBD Interface Converter With Switchable Pin Routing
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Solution Overview
Problem
The functional pin assignment of 16-pin vehicle OBD interfaces is chaotic due to different custom configurations from various manufacturers, leading to low compatibility in existing pin matching technologies, making it impossible to automatically connect any pins to the I/O port.
Innovation Solution
An interface converter with a communication contact, multiple pin contacts, and a switch switching apparatus that links the communication contact to any target pin contact, enabling the vehicle diagnosis device to connect to different types of vehicles' OBD interfaces by determining the target pin based on parameter information such as brand, model, and configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed pin groups are used for connection, then the device structure is simple, but the compatibility with different vehicle configurations is poor
Solution Approach 1:
The patent applies the dynamics principle by replacing fixed pin connections with a switch switching apparatus that can dynamically reconfigure connections. The switch component allows the interface converter to adapt its pin assignments based on different vehicle configurations, transforming a static structure into a dynamic one that can respond to various diagnostic needs and vehicle types.
Solution Approach 2:
The interface converter achieves universality by incorporating a switch switching apparatus that enables a single device to work with multiple vehicle configurations. Instead of requiring different fixed pin assignments for different vehicles, the switch component allows one interface converter to universally connect to various OBD interfaces by dynamically routing signals to appropriate pin contacts based on the specific vehicle's requirements.
2Productivity
If manual pin configuration is used, then the device complexity is low, but the operation efficiency and diagnostic speed are reduced
Solution Approach 1:
The interface converter implements self-service by automatically detecting vehicle parameters and configuring pin connections without manual intervention. The controller receives vehicle identification information, automatically determines the appropriate pin assignment based on vehicle type and configuration, and controls the switch switching apparatus to establish the correct connections, thereby improving diagnostic speed while maintaining reasonable system complexity.
Solution Approach 2:
The system employs feedback by receiving vehicle identification information and parameter data from the vehicle's OBD interface, processing this information to determine the appropriate pin configuration, and then using this feedback to control the switch switching apparatus. This closed-loop approach enables automatic adaptation to different vehicles, significantly improving diagnostic efficiency without requiring complex manual configuration procedures.
Data Source
AI summary
An interface converter and a vehicle diagnosis system are provided. The interface converter includes a communication contact, pin contacts, and a switch switching apparatus. The pin contacts are plugged into the vehicle-mounted automatic diagnosis system interface. The communication contact is configured to connect to a vehicle diagnosis device, and the switch switching apparatus is configured to link the communication contact with any one pin contact among the pin contacts, so that signals transmitted by the vehicle diagnosis device by means of the communication contact are transmitted to a target pin contact among the pin contacts. Since the switch switching apparatus may link the communication contact to any one pin contact among the pin contacts, the interface converter can be connected to any target pin in an OBD interface of different types of vehicles, thereby increasing the adaptability and compatibility of the interface converter.