Transceiver Bus Disconnection via Signal Comparison and Relay Isolation
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Solution Overview
Problem
In multipoint/multidrop network architecture, failures in transceivers or communication devices on the bus lead to communication breakdowns, making it difficult to identify the source of the failure, resulting in prolonged downtime and increased maintenance time, which affects production and profitability.
Innovation Solution
A controller with a signal comparator and failure detection controller is used to compare data from the transceiver with data monitored on the bus, triggering a relay to disconnect the transceiver if a difference is detected, allowing for isolation and facilitating quick identification of the failure location by transmitting signals to the CPU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transceiver is connected to a bus in multipoint/multidrop architecture, then communication between devices can be established, but a failure in the transceiver or bus will cause communication breakdown for all devices and make it difficult to identify the failure source
Solution Approach 1:
The patent divides the communication system into isolated segments using relay switches. Each transceiver is connected to the bus through an individually controllable relay, allowing the system to segment the network and isolate failures to specific devices rather than affecting the entire bus. This enables localized fault management while maintaining overall system reliability.
Solution Approach 2:
The patent introduces relay switches as intermediary components between transceivers and the bus. These relays act as mediators that can be opened or closed based on failure detection, allowing the system to maintain communication for healthy devices while isolating faulty ones. The relay serves as a buffer that protects the overall system from individual device failures.
2Ease of operation
If maintenance personnel manually inspect devices to identify failures, then they can determine whether the transceiver or communication device fails, but this process takes considerable time and increases downtime
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously monitors communication status and automatically controls relay switches based on detected failures. When a failure is detected, the controller receives feedback signals, identifies the faulty device, and automatically isolates it by controlling the appropriate relay. This eliminates the need for manual inspection and significantly reduces maintenance time.
Solution Approach 2:
The system performs self-diagnosis and self-isolation of faulty devices. The controller automatically detects failures, identifies whether the transceiver or communication device is at fault, and controls the relay switches to isolate the problematic component without human intervention. This self-service capability dramatically reduces maintenance time and operational downtime.
Data Source
AI summary
The present invention relates to a method for disconnecting a transceiver from a bus in multipoint/multidrop architecture. A central processing unit (CPU) and a universal asynchronous receiver transmitter (UART) in a system are connected to a controller used for storing and transmitting data, and the controller is further connected with a bus through a transceiver that monitors/records data and a relay that connects or disconnects the transceiver from the bus. The controller comprises a signal comparator used to compare similarities and differences of data and a failure detection controller used to achieve connection or disconnection of the bus with the transceiver. In case of the transceiver's failure, the controller disconnects the transceiver from the bus to ensure that the bus does not fail to work due to breakdown of the transceiver. On the other hand, a signal feedback mechanism is also utilized for a maintenance person to shorten the time in failure detection and thus reduce enterprises' operating losses caused by breakdown of their communication equipments.