CN201181957Y - Photographone terminal used for railway communication system - Google Patents
Photographone terminal used for railway communication system Download PDFInfo
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- CN201181957Y CN201181957Y CNU2008200784292U CN200820078429U CN201181957Y CN 201181957 Y CN201181957 Y CN 201181957Y CN U2008200784292 U CNU2008200784292 U CN U2008200784292U CN 200820078429 U CN200820078429 U CN 200820078429U CN 201181957 Y CN201181957 Y CN 201181957Y
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Abstract
The utility model discloses a photophone terminal used in a railway communication system. The photophone terminal consists of an optical network unit, a VoIP voice unit, a power supply module, a voice input device and a voice output device. Using the PON access technology and the VoIP technology, the prior optical fiber cable on the special railway line for passenger traffic or the optical fiber line arranged along the railway can be used as a transmission medium, so that the railway stations or the communication access points can enjoy rich highly efficient voice business. Simultaneouly, the utility model also has the advantages of compact structure, simple connection, convenient use, easy carrying, strong practicality, and the like.
Description
Technical field
The utility model relates to a kind of photographone terminal, relates in particular to a kind of being used in the railway communication system, can utilize station or the railway optical fiber communication interface of reserving along the line to realize the photographone terminal that voice insert, and belongs to the railway special communication technical field.
Background technology
In the railway communication system, speech business is indispensable important component part.Up to the present, the railway system still mainly adopts local battery apparatus as the voice access way.This telephone set depends on the transmission that copper twisted pair that existing railway lays is realized voice along the line.But, based on the reason of aspects such as price, fail safe and reliability, incite somebody to action no longer cable laying future in the railway both sides, and replace with optical cable, for example begin now many special lines for passenger trains building, adopted the transmission means of optical fiber with regard to thoroughly having eliminated cable.Under this background, with the copper twisted pair Technical Development Requirement that the local battery apparatus of transmission medium can not satisfy the railway communication system.
According to the characteristics of railway communication system, can use Optical Access Network that the optical fiber link of railway (Line for Passenger Transportation) along the line is carried out networking.On this basis, the voice of incoming fiber optic access terminal if adopt directly, are the most feasible voice access solutions after the railway communication system fiberize completely in the future.In the railway communication system that adopts full optical fiber, can build " photophone post " according to the mode of existing conversation post during laying optical cable, promptly between 2 stations, place an asymmetric branching ratio splitter and draw an optical fiber interface every a segment distance, and this optical fiber interface is fixed on railway next door, be used for the access of terminal equipment.Because wired mode is adopted in the access of terminal equipment, thereby can make full use of the abundant characteristics of optical fiber link bandwidth resources, improve the real-time of voice transfer.
Optical Access Network comprises EPON (PON) and active optical network (AON) two big classes.A typical EPON is made up of optical line terminal (OLT), optical network unit (ONU), Optical Distribution Network (ODN), and each OLT can hang a plurality of ONU down and form a local area network (LAN).Consider in the EPON that it is more flexible that passive characteristic makes that network lays, and need not machine room and power supply; Share the characteristic of optical fiber and can save a large amount of fiber resources, make that the Access Network line cost is lower; And the structure of pure smooth medium, transparent fiber broadband network makes to the following professional fail safe that has kept technology of expanding.Therefore, the Optical Access Network that is used for the railway communication system preferably uses EPON to realize.
But, make a general survey of existing various voice and access terminal, also there is not economically viable voice access solution at above-mentioned " photophone post ".Therefore, after future, the railway communication system realized fiberize completely, still lack a kind of convenient and reliable speech sound access equipment.
At notification number is in the Chinese utility model patent of CN2785274, a kind of laser phone is disclosed, form by telephone transmitter, receiver, sender unit, signal receiver, modulator, demodulator, laser, detector and transmission medium, carry out signal transmission with following annexation: telephone transmitter, sender unit, modulator, laser, transmission medium, detector, demodulator, signal receiver, receiver.Described transmission medium can be air or optical fiber.It is fast that this utility model has transmission speed, strong security, and radiationless advantage, but be not adapted at using in the railway communication system.
Summary of the invention
In order to solve the voice transfer problem that back railway communication system is transformed in fiberize, the utility model provides a kind of photographone terminal that is used for the railway communication system.This terminal makes it can directly insert the optical fiber interface that railway station or roadside are reserved by integrated ONU equipment and VoIP voice unit in inside, realizes efficient real-time voice transfer.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of photographone terminal that is used for the railway communication system is characterized in that:
Described photographone terminal comprises power module, optical network unit, VoIP voice unit, voice input device and voice output device; Wherein,
Described voice input device is connected with described VoIP voice unit, and described VoIP voice unit connects described optical network unit and voice output device respectively;
Described power module connects described optical network unit, VoIP voice unit, voice input device and voice output device respectively.
Wherein, described optical network unit is connected with the trunk optical fiber link by tail optical fiber.
Described voice input device is connected with Mike, to accept described Mike's input signal;
Described voice output device is connected with loud speaker, externally to export voice signal by loud speaker.
Described power module is the rechargeable battery that is installed in the photographone terminal inner.
A kind of railway communication system, between each station, be equipped with fibre circuit, place an asymmetric branching ratio splitter to draw an optical fiber interface every a segment distance on the described fibre circuit, described optical fiber interface is fixed on the railway next door, described station has optical line terminal, the up outlet of described optical line terminal by described station is connected among the bearer network, it is characterized in that:
The above-mentioned photographone terminal of described railway communication system's employing accesses terminal as voice;
Described photographone terminal is connected on the described optical fiber interface by tail optical fiber.
Photographone terminal provided by the utility model is mainly organically combined by ONU (optical network unit) and VoIP voice unit and forms, and can solve and utilize fibre circuit to realize the problem that voice insert at a high speed in the railway communication system.This photographone terminal structure compactness, connect simple, easy to use, be easy to carry, practical, can be widely used in adopting in the voice-transmission system of PON access technology and voip technology.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural principle block diagram of the present utility model;
User mode schematic diagram when Fig. 2 is applied to the railway communication system for the utility model.
Embodiment
Referring to shown in Figure 1, the utility model comprises power module, ONU (optical network unit), VoIP voice unit, voice input device and voice output device.Wherein voice input device is accepted Mike's input signal.This voice input device is connected with the VoIP voice unit, voice signal is inputed to the VoIP voice unit handle.The VoIP voice unit connects ONU (optical network unit), voice input device and voice output device respectively.In the VoIP voice unit, voice signal is converted into the IP bag, sends into ONU (optical network unit) and handles.In ONU (optical network unit), relevant IP bag is further converted to the optical fiber link signal, transmits to other photographone terminal by the optical fiber that is connected with this optical network unit.Optical fiber link signal from other photographone terminal is converted to the IP bag by ONU (optical network unit) too, and further is converted to voice signal by the VoIP voice unit.The voice output device that this voice signal input is connected with the VoIP voice unit, and further externally export voice signal by loud speaker.Power module connects above-mentioned ONU (optical network unit), VoIP voice unit, voice input device and voice output device respectively, so that provide supply of electric power to above-mentioned each functional unit.
Above-mentioned ONU (optical network unit) can adopt existing AN5006-02 or OE-ONU3000 type ONU equipment etc., this optical network unit adopts tail optical fiber to be connected with the trunk optical fiber link, the transmission means of multiple optical fiber link be can support, APON, GPON, EPON, BPON, SDH, PDH, MSTP, ASON etc. comprised.
The VoIP voice unit also can adopt multiple existing product, for example TNETV1051 and BCM1111 series etc.These existing products generally can be supported SIP and agreement H.323, thereby fully satisfy the demand of various ways voice access service.
Power module can be mounted in the rechargeable battery of photographone terminal inner.Utilize of the relevant functional unit power supply of this battery, dispense with outer connecting power to the photographone terminal.Battery charge can adopt that the complete machine seat fills, complete machine external charge device charging or battery is pulled down the mode of independent charging.
The operation principle of this photographone terminal is such:
In the process that voice send, voice input device is sent the voice signal that receives into the VoIP voice unit, carry out becoming the IP bag after A/D conversion, coding, the modulation, the IP bag with the signal of telecommunication converts light signal to by ONU (optical network unit) again, is transferred on the optical transport network by tail optical fiber at last.
Receive in the path at voice, ONU (optical network unit) detects the light signal of sending here on the optical transport network, with its reception and be demodulated into the IP packet of the signal of telecommunication, carry out demodulation, decoding and D/A conversion by the VoIP voice unit again, convert the voice signal of simulation to, and by the output of voice output device.
Fig. 2 is the user mode schematic diagram that uses this photographone terminal in the railway communication system of reality.Shown in this figure, be equipped with fibre circuit between per 2 stations, place an asymmetric branching ratio splitter drawing an optical fiber interface every a segment distance on the circuit, and this optical fiber interface is fixed on the railway next door.Optical fiber link between the station has adopted the networking mode of EPON, by placing an OLT at each station, just can in the covering scope of OLT the terminal equipment that is connected on OLT and all optical fiber interfaces be formed a local area network (LAN).OLT is connected to bearer network by the up outlet of each website, by the upper strata OLT of all websites is fused among the bearer network, and each substation communication point along the line with railway formed a high-efficiency reliable EPON.
When needs are set up talking link, be connected photographone terminal-phone 1, the phone 2 of having gathered EPON ONU equipment and VoIP voice unit on the optical fiber interface of drawing along the railway by tail optical fiber, can be connected to phone 3 on station end and the switch that OLT links to each other, the station externally is connected with other phones 4 by the PSTN of Tie Tong.
In this networking mode, can realize phone 1, phone 2, phone 3 and phone 4 any functions of voice intercommunication between the two, the conversation of phone 1 or phone 2 and phone 3 can also be set to the mode of hot line, can fully satisfy the demand of multi-form voice access service on the railway line.
This photographone terminal can be applicable to railway along the line, particularly in the speech communication system of Line for Passenger Transportation.When end of conversation, the photographone terminal can be unloaded from optical fiber link and take away, with anti-lost.Because the photographone terminal adopts the battery-powered mode of internal electrical, has omitted railway power demands along the line, especially is suitable for railway maintenance personal's line walking along the line and looks into the usefulness of repairing.
Need to prove that all common-battery phones must could use by switch, connecting two phones arbitrarily is the not enough communication that realizes.Therefore when embodiment shown in Figure 2, used the switch of the existing PSTN of Tie Tong network and realized conversation.If independent switch is set in the railway communication system, then different photographone terminals can not realize communicating with each other by the PSTN of Tie Tong network.
More than be that example describes composition of the present utility model and operation principle in detail with the railway communication system.It needs to be noted that the utility model is not limited to use in the railway communication system.In fact, all adopt the voice-transmission system of PON access technologies and voip technology can use this photographone terminal, and just differing at this one has illustrated for example.
Though above described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and does not break away from spirit of the present invention, appended claim will comprise these distortion and variation.
Claims (5)
1. photographone terminal that is used for the railway communication system is characterized in that:
Described photographone terminal comprises power module, optical network unit, VoIP voice unit, voice input device and voice output device; Wherein,
Described voice input device is connected with described VoIP voice unit, and described VoIP voice unit connects described optical network unit and voice output device respectively;
Described power module connects described optical network unit, VoIP voice unit, voice input device and voice output device respectively.
2. the photographone terminal that is used for the railway communication system as claimed in claim 1 is characterized in that:
Described optical network unit is connected with the trunk optical fiber link by tail optical fiber.
3. the photographone terminal that is used for the railway communication system as claimed in claim 1 is characterized in that:
Described voice input device is connected with Mike, to accept described Mike's input signal;
Described voice output device is connected with loud speaker, externally to export voice signal by loud speaker.
4. the photographone terminal that is used for the railway communication system as claimed in claim 1 is characterized in that:
Described power module is the rechargeable battery that is installed in the photographone terminal inner.
5. railway communication system, between each station, be equipped with fibre circuit, place an asymmetric branching ratio splitter to draw an optical fiber interface every a segment distance on the described fibre circuit, described optical fiber interface is fixed on the railway next door, described station has optical line terminal, the up outlet of described optical line terminal by described station is connected among the bearer network, it is characterized in that:
Described railway communication system adopts photographone terminal as claimed in claim 1 to access terminal as voice;
Described photographone terminal is connected on the described optical fiber interface by tail optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200784292U CN201181957Y (en) | 2008-01-04 | 2008-01-04 | Photographone terminal used for railway communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200784292U CN201181957Y (en) | 2008-01-04 | 2008-01-04 | Photographone terminal used for railway communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201181957Y true CN201181957Y (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200784292U Expired - Fee Related CN201181957Y (en) | 2008-01-04 | 2008-01-04 | Photographone terminal used for railway communication system |
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| CN (1) | CN201181957Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243655A (en) * | 2013-06-17 | 2014-12-24 | 深圳市共进电子股份有限公司 | Magneto telephone set implementation method and system based on embedded optical network |
| CN109361460A (en) * | 2018-11-14 | 2019-02-19 | 同方电子科技有限公司 | A kind of optical fiber voice communication equipment based on PON |
-
2008
- 2008-01-04 CN CNU2008200784292U patent/CN201181957Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243655A (en) * | 2013-06-17 | 2014-12-24 | 深圳市共进电子股份有限公司 | Magneto telephone set implementation method and system based on embedded optical network |
| CN104243655B (en) * | 2013-06-17 | 2018-06-12 | 深圳市共进电子股份有限公司 | Magnetic telephone method and system based on embedded optical-fiber network |
| CN109361460A (en) * | 2018-11-14 | 2019-02-19 | 同方电子科技有限公司 | A kind of optical fiber voice communication equipment based on PON |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20160104 |