Fiber-optical dual ring redundancy controller for controller local area network
A technology for controllers and optical fiber receivers, applied in ring networks, data exchange networks, digital transmission systems, etc., can solve problems such as system crashes, inability to use double-ring redundancy strategies, and large signal delays, so as to achieve improved reliability and good performance. Achievability, the effect of simple method
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] exist figure 1 Among them, the dual-ring redundant controller 1, as a transceiver part of a CAN node, is connected between the CAN interface 2, the main ring optical fiber receiver 3, the main ring optical fiber transmitter 4, the secondary ring optical fiber transmitter 5 and the secondary ring optical fiber receiver 6 between. The dual-ring redundant controller includes a main-ring signal transponder 7 , a main-ring signal selector 8 , a secondary-ring signal selector 9 and a clock generator 10 .
[0024] The function of the main ring signal repeater 7 is to realize the signal forwarding between the CAN node and the optical fiber ring. When a CAN node wants to send data, it sends the data frame signal to the main ring signal transponder 7 through the CAN interface of the node, and the main ring signal transponder 7 sends the signal to the optical f...
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