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Dual-path automatic full-redundancy transparent light transmission system

A fully redundant, optical transmission technology, applied in the transmission system, digital transmission system, electromagnetic wave transmission system, etc., can solve the problem of not being able to combine dual-channel fully redundant serial signals, and achieve high reliability and strong real-time transmission , to achieve a convenient effect

Active Publication Date: 2011-08-10
CHINA AVIATION OPTICAL-ELECTRICAL TECH CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

[0013] The purpose of the present invention is to provide a dual-channel automatic fully redundant transparent optical transmission system to solve the problem that the prior art cannot combine dual-channel fully redundant serial signals

Method used

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  • Dual-path automatic full-redundancy transparent light transmission system
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  • Dual-path automatic full-redundancy transparent light transmission system

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Embodiment Construction

[0032] The method of the present invention will be described in further detail below in conjunction with the accompanying drawings. The following descriptions all take the RS422 standard as an example. For the differences between RS232 and RS485, see Figure 10-12 ,No longer.

[0033] The key technology of dual-channel RS422 redundancy in this patent is how to directly short-circuit the same signal with two independent RS422 signals without affecting the performance index. Without any processing, if the RS422 bus is directly short-circuited, such as Figure 5 As shown, when the circuit board A transmits a valid "0" level and the circuit board B transmits an idle "1" level and the RS422 signals of the two circuit boards are short-circuited, the final RS422 bus will not be available. "0" level, resulting in transmission error.

[0034] In order to realize the key technology mentioned above, we have added such as Image 6 The control circuit ( Image 6 The middle is the cont...

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Abstract

The invention relates to a dual-path automatic full-redundancy transparent light transmission system comprising two dual-path full-redundancy optical transceivers. Either optical transceiver comprises two photoelectric conversion interfaces, the electric side of either photoelectric conversion interface is connected with a serial interface which is provided with a control circuit; light signal sides of the two photoelectric conversion interfaces of one optical transceiver are respectively correspondingly connected with optical signal sides of the two photoelectric conversion interfaces of theother optical transceiver; and output ends of sending drivers and input ends of receiving drivers, of the two paths of serial interfaces of one optical transceiver are correspondingly short-circuited. The single-side merging system adopts full-redundancy transparent transmission, and is suitable for a certain special application occasions because the two non-short-circuited data terminals in the mode can not simultaneously send data, but can simultaneously receive data.

Description

technical field [0001] The invention relates to the field of serial signal redundant transmission, in particular to a double-channel automatic fully redundant transparent optical transmission system. Background technique [0002] Regarding the redundant transmission of serial signals, there are currently three technologies for redundant transmission of dual-channel serial signals, taking RS422 as an example: [0003] a) Pseudo redundant mode [0004] Such as figure 1 , the two RS422 signals are respectively converted into optical signals by optical transceiver 1 (optical transceiver 2), transmitted to optical transceiver 3 (optical transceiver 4) through optical fiber, and then converted into RS422 signals, and connected to a "2 in 1 device". An optical transceiver is a device that converts optical signals into electrical signals, and has no effect on transparent transmission. [0005] This method has two RS422 signal transmissions, and the RS422 signals output by the opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/22H04B10/12H04B10/25
Inventor 陈旭辉魏利民陈志俊乔东旭李森
Owner CHINA AVIATION OPTICAL-ELECTRICAL TECH CO LTD