Controller Signal Line Connection Check via Closed Loop Multiplexer
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Solution Overview
Problem
Existing methods for checking the connected state between a controller and modules using a wire harness are prone to errors due to short-circuiting or damage, leading to incorrect determination of normal or abnormal connections.
Innovation Solution
An electronic device that transmits a check signal through a closed loop and includes a multiplexer to divide and collect signals, allowing for accurate and rapid determination of connected states between modules, with a display unit to communicate connection status and a connector design with sockets for transmitting and receiving the check signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a check signal is transmitted through a ground loop to detect connection status, then the connection state can be checked, but false detection occurs when the wire harness is short-circuited with GND or electric source
Solution Approach 1:
The patent divides the connection detection process into two independent paths: a signal line path and a ground line path. By segmenting the detection mechanism, the system can independently verify both the signal transmission path and the ground connection path, preventing false detection caused by short-circuits between the wire harness and ground or power sources.
Solution Approach 2:
The patent introduces an intermediary detection mechanism that uses a dedicated detection signal path separate from the normal signal transmission path. This intermediary path acts as a mediator to verify connection status without being affected by short-circuits in the main signal path, thereby improving detection reliability.
2Device complexity
If a simple ground loop method is used for connection checking, then the device complexity is low, but the detection accuracy deteriorates due to short-circuit interference
Solution Approach 1:
The detection system is segmented into multiple independent detection paths (signal line detection path and ground line detection path). This segmentation allows the system to maintain relatively simple individual paths while achieving high overall detection accuracy through the combination of multiple paths, avoiding the complexity of a single complex detection system.
Solution Approach 2:
The patent combines multiple simple detection paths (signal line detection and ground line detection) into a unified connection status determination system. By merging the results from these simple individual paths, the system achieves high detection accuracy without requiring any single path to be overly complex.
Data Source
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AI summary
An electronic device that checks a connected state of a signal line is provided. The electronic device includes a controller configured to transmit a check signal and at least one module configured to include a closed loop and receive the check signal. When the controller receives the check signal through the closed loop, the controller determines that the at least one module is connected to the controller.