Processor-Based Connection Interface Failure Detection
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Solution Overview
Problem
Electronic devices face malfunctions due to failures in connection interfaces between printed circuit boards and external components, which are difficult to detect without additional hardware, leading to increased manufacturing costs and defect rates.
Innovation Solution
An electronic device with a processor that outputs an inspection signal with a specific bit pattern and bit rate to the connection interface, identifies the voltage level of the reception signal, and determines the connection state based on the voltage level, allowing for the detection of open or short states without additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional hardware is used to detect connection interface failures, then detection capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The existing processor performs self-diagnosis by outputting inspection signals through the connection interface and analyzing the reflected signals to detect connection failures. The processor uses its own computational resources and existing I/O capabilities to detect connection interface failures without requiring separate detection hardware, thereby resolving the contradiction between detection capability and device complexity
Solution Approach 2:
The processor is designed to perform multiple functions: normal data processing and connection interface failure detection. By utilizing the same processor for both operational tasks and diagnostic functions, the invention eliminates the need for dedicated detection hardware while maintaining comprehensive detection capability across the connection interface
2Measurement precision
If additional hardware is used to detect connection interface failures, then detection capability is improved, but manufacturing cost increases
Solution Approach 1:
The processor performs self-diagnosis by outputting inspection signals through the connection interface and analyzing the reflected signals to detect connection failures. The processor uses its own computational resources and existing I/O capabilities to detect connection interface failures without requiring separate detection hardware, thereby resolving the contradiction between detection capability and device complexity
Solution Approach 2:
The processor is designed to perform multiple functions: normal data processing and connection interface failure detection. By utilizing the same processor for both operational tasks and diagnostic functions, the invention eliminates the need for dedicated detection hardware while maintaining comprehensive detection capability
3Device complexity
If traditional detection methods are used, then device complexity is reduced, but detection precision and reliability decrease
Solution Approach 1:
The system outputs an inspection signal through the connection interface and monitors the reflected signal characteristics. By analyzing the voltage levels and signal patterns of the reflected signals, the processor obtains feedback information about the connection state, enabling reliable detection of connection failures while maintaining device simplicity
Solution Approach 2:
The invention replaces physical hardware detection mechanisms with electrical signal-based detection. By using electrical inspection signals and analyzing their reflection characteristics, the system achieves reliable connection state detection without mechanical or additional electronic detection hardware
Data Source
AI summary
An electronic device according to certain embodiments comprises a printed circuit board (PCB); a processor mounted on the PCB; and a connection interface configured to connect the PCB to an off-board electronic component, wherein the processor is configured to: output an inspection signal to the connection interface according to a particular bit pattern at a designated bit rate; identify a voltage level of a reception signal input to the processor, during a designated time, in response to the output of the inspection signal particular bit pattern; and determine a connection state of the connection interface based on the identified voltage level of the reception signal.