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Optical fiber direct transport station with common/different-frequency forwarding function

An optical fiber repeater and function technology, which is applied in the field of optical fiber repeaters, can solve the problems of no broadband signal repeater function, can not meet the voice communication and data transmission, etc., and achieves the effect of reliable performance and simple structure

Active Publication Date: 2008-10-08
泉州市铁通电子设备有限公司
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AI Technical Summary

Problems solved by technology

However, the existing relay equipment does not have the broadband signal forwarding function of both same-frequency forwarding and different-frequency forwarding, and cannot meet the requirements of the railway train wireless dispatching communication system for voice communication and data transmission in sections of different systems. need

Method used

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  • Optical fiber direct transport station with common/different-frequency forwarding function

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Embodiment Construction

[0022] best practice

[0023] The optical fiber repeater with the same and different frequency forwarding functions provided by the present invention is used in the wireless dispatching communication system of railway trains in the railway system B communication system section (that is, the four-frequency group is single-duplex compatible), and realizes wireless communication blind areas and weak areas of coverage. As known, the above-mentioned railway train wireless dispatching communication system adopts the same and different frequency independent half-duplex working mode to carry out voice communication and data transmission, that is, the working frequency of the station platform and locomotive platform is 457~459MHz (center frequency) when working at the same frequency. 458MHz), the transmission frequency of the station platform and the reception frequency of the locomotive station are 467-469MHz (center frequency 468MHz) when the frequency is different, and the reception...

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Abstract

An optical fiber direct amplifying station which has same / different frequency transmission function comprises a near-end machine and a far-end machine which are connected with optical fiber. In the near-end machine, three ends of the circulator are respectively connected with a first frequency receiving / transmitting channel of the duplexer, a radio frequency output end of the optical fiber and a first input end of the multiplexer. A second input end of the multiplexer is connected with a second frequency transmitting channel of the duplexer, and the output end is connected with a radio frequency input end of the optical module. In the far-end machine, the input end of the shunt is connected with the radio frequency receiving end of the optical module, and a first frequency output end of the shunt is connected with the input end of a first main power amplifier. A second main power amplifier is connected between a second frequency output end of the shunt and a second frequency receiving channel of the duplexer. The output end of the low-noise amplifier is connected to the radio frequency transmission end of the optical module. The three ends of a first radio frequency switch of which the switching is controller by a controller are respectively connected with the first frequency receiving / transmitting channel of the duplexer, the input end of the low-noise amplifier and the output end of the first main power amplifier.

Description

technical field [0001] The invention relates to an optical fiber repeater with same-frequency and different-frequency forwarding functions, in particular to an optical fiber repeater with same-frequency and different-frequency forwarding functions used in a railway train wireless dispatching communication system. Background technique [0002] Railway train wireless dispatching communication system is an important equipment to ensure traffic safety. The system mainly includes dispatching switchboard, station (base station) equipment, locomotive equipment, handheld equipment, etc. With the continuous improvement of railway production and operation efficiency, transportation safety requirements, and communication modernization level, the railway train wireless dispatching communication system must not only realize voice communication functions such as train wireless dispatching, railway station yard shunting communication, and railway section mobile communication, but also It a...

Claims

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Application Information

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IPC IPC(8): H04B10/17H04B10/16H04B10/291
Inventor 洪泉益蔡胜敏马宏平张国漳
Owner 泉州市铁通电子设备有限公司
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