Communication Apparatus Seamless Mode Switching via Negotiation
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Solution Overview
Problem
Existing communication systems, such as those using the DSI3 protocol, lack a smooth switching mechanism from Periodic Data Collection Mode (PDCM) to Command and Response Mode (CRM) communication, often requiring resetting or turning off of devices, which hampers efficient data communication.
Innovation Solution
A communication apparatus and system that includes a controller and communicator capable of reading negotiation information indicating conditions for PDCM communication during CRM communication, allowing seamless switching from PDCM to CRM upon completion of negotiated conditions without device resets, using the DSI3 protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switching between communication methods is implemented without specific switching means, then communication flexibility is improved, but switching smoothness deteriorates requiring device resets
Solution Approach 1:
The master apparatus transmits negotiation information in advance during CRM communication to indicate conditions for switching to PDCM communication. This preliminary negotiation allows the slave apparatus to prepare for mode switching without requiring device resets, thereby maintaining communication flexibility while achieving smooth transitions between modes.
2Productivity
If PDCM communication is used for high-speed data transmission, then data transmission rate is improved, but switching back to CRM communication becomes difficult requiring device resets
Solution Approach 1:
The system uses a feedback mechanism where the master apparatus monitors communication completion status and automatically initiates mode switching back to CRM when PDCM communication conditions are satisfied. This feedback-driven approach enables seamless transitions from high-speed PDCM back to standard CRM communication without device resets, maintaining both high data transmission rates and communication method versatility.
3Adaptability or versatility
If device reset is required for mode switching, then communication method switching is achieved, but communication continuity deteriorates
Solution Approach 1:
Negotiation information is transmitted in advance during CRM mode to establish switching conditions before PDCM mode activation. This preliminary preparation enables smooth transitions without device resets, maintaining communication continuity while achieving versatile mode switching capability.
Solution Approach 2:
The master apparatus continuously monitors communication status and automatically triggers mode switching back to CRM when switching conditions are met. This feedback mechanism ensures communication continuity by preventing the need for device resets, thereby maintaining both adaptability and reliability.
Data Source
AI summary
The master apparatus includes a communicator that transmits a command to the one or more slave apparatuses in the first communication method, and that transmits a trigger to the one or more slave apparatuses and receives data that is transmitted by the one or more slave apparatuses in response to the trigger in the second communication method, and a controller that controls the communicator during execution of the first communication method to read negotiation information that indicates conditions for the second communication method from a memory and to transmit the negotiation information to the one or more slave apparatuses, wherein upon completion of communication that satisfies the conditions after the first communication method is switched to the second communication method, the controller performs switching from the second communication method to the first communication method.