Fiber communication protocol used for distributed controller and realization device thereof

Abstract

The invention relates to a fiber communication protocol used for a distributed controller. An M node writes an instruction frame signal into an M instruction frame queue zone and sends the instruction frame signal to an S1 node; the S1 node stores an instruction frame into the M instruction frame queue zone and forwards the instruction frame to a next S node, and by parity of reasoning, an Sn node sends the instruction frame to the M node and covers the M instruction frame queue zone; for the S1 node, a data frame is directly transmitted to a next node; for the Sn (n is greater than or equal to 2) node, the data frame of a previous node and the data frame of a current node are received to form a new message queue, and the new message queue is transmitted to the next node; by parity of reasoning, the message queue of the Sn node comprises the data frames of all S nodes and is transmitted to the M node; and after the M node detects a data frame signal, the data frame is written into each node data frame queue zone of the message queue, and the data frame and the previous received and covered instruction frame form a complete message queue. In one instruction period, data interaction between a master controller node and each slave controller node is realized.

Description

technical field [0001] The invention relates to an optical fiber communication protocol for distributed controllers, in particular to an optical fiber communication protocol used as an actuator in a flight control system. The invention also relates to a device for realizing the optical fiber communication protocol. Background technique [0002] In the arrow-borne flight control system, the MTL-STD-1553B bus is mainly used for communication between the control system and the servo system, measurement system, and platform equipment. As the first generation of military communication bus technology, the MTL-STD-1553B bus adopts the command response mode , the control system issues an instruction, and the target subsystem returns a message to the control system after responding to the instruction. The MTL-STD-1553B bus rate is up to 1Mbps, with up to 32 nodes on the bus, and 1553B shielded cables are used as the transmission medium; as aerospace products have higher and higher r...

AI Technical Summary

Problems solved by technology

[0004] In the Fiber Channel arbitrated ring protocol, the communication delay between nodes cannot be determined. Only when the nodes on the ring detect that the bus is idle can they obtain the right to use the bus through arbitration, thereby establishing a two-way connection with the destination node. The destination node directly lets the data pass through. At any time, only one pair of nodes uses the bus, and other nodes can only obtain arbitration until they give up the right to use the bus.

[0005] In the communication process between the flight control system and the servo system, the servo system adopts distributed control, and each node on the bus loop needs to respond to the command in the same command cycle and return the measurement information to the master node. The arbitration loop protocol cannot meet the above requirements, and it is necessary to design a A Fiber Optic Communication Protocol Applicable to Distributed Control System

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