CN202231726U - Optical fiber data transmission terminal device - Google Patents
Optical fiber data transmission terminal device Download PDFInfo
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- CN202231726U CN202231726U CN2011203863809U CN201120386380U CN202231726U CN 202231726 U CN202231726 U CN 202231726U CN 2011203863809 U CN2011203863809 U CN 2011203863809U CN 201120386380 U CN201120386380 U CN 201120386380U CN 202231726 U CN202231726 U CN 202231726U
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- data transmission
- transmission terminal
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- fibre optic
- converter
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Abstract
The utility model discloses an optical fiber data transmission terminal device and belongs to a field of signal transmission technology. The optical fiber data transmission terminal device includes a main circuit ASIC (Application Specific Integrated Circuit) module, and a data interface module, an Ethernet interface, a phone interface module, a clock module, an optical interface module and a power source system. In the utility model, by utilizing advanced optical fiber transmission technology, shortcomings of short transmission range, poor anti-interference capability and difficulty in realizing high speed transmission and the like of a prior cable are effectively overcome. And at the same time, problems such as electromagnetic interference, ground loop interference, lightening, voltage surge and the like are solved. Thus, the reliability, stability, safety and instantaneity of data transmission of bridge safety monitoring are improved substantially.
Description
Technical field
The utility model relates to a kind of data-set, specifically, relates to a kind of fibre optic data transmission terminal that is applied in the bridge security detection system.
Background technology
Fast development along with highway in China, network of railways construction; On the current problem of solution, begin to adopt modes such as bridge, overpass more and more; Therefore; The safety detection of bridge becomes more and more important, especially how monitors bridge exactly geology variation, harsh weather, and is just more and more important like the safety factor under the influences such as natural calamities such as typhoon, excess load delivery.
At present; At home on the communications equipment market; The relevant device of only accomplishing data communication is more, but the transmission equipment that can adapt to the bridge security detection system fully seldom, especially in the actual environment at bridge place, realizes in real time, the equipment of high accurate GPS transfer of data occurs as yet.
The utility model content
The purpose of the utility model is to provide a kind of fibre optic data transmission terminal, utilizes Optical Fiber Transmission and GPS location technology to realize data in real time, the high accuracy transmission of bridge security detection.
To achieve these goals, the technical scheme of the utility model employing is following:
The fibre optic data transmission terminal comprises main circuit ASIC unit, and the data interface unit, Ethernet interface, telephone interface unit, clock unit, Guang Kou unit and the power-supply system that are connected with this main circuit ASIC unit respectively.
Further; Said main circuit ASIC unit comprises group road input circuit and crowd road output circuit, and wherein, crowd road input circuit comprises first decoder; And code pattern converter that is connected with the input of this first decoder and phone clock recovery device, with the deframer that is connected with its output; Crowd road output circuit then comprises first encoder, and the framing port that is connected with the input of this first encoder, with the code pattern converter that is connected with its output.
Said clock unit is connected on code pattern converter and the phone clock recovery device, simultaneously, on code pattern converter and phone clock recovery device, also is connected with phase-locked loop.
Again further, said data interface unit comprises the buffer and the driver of the input of the output that connects deframer and framing port, and the interface protection device that is connected with driver with this buffer.
Again further; Said telephone interface unit comprises the clock multiple connection/tapped off signal processor that is connected with the output of deframer; With this A/D converter that clock multiple connection/the tapped off signal processor is connected, and the ringing current generator that is connected with this A/D converter respectively, first protector and telephony interface.
Further; Said Guang Kou unit comprises output light mouth circuit and defeated light inlet circuit; Wherein, Defeated light-emitting window circuit comprises second encoder that is connected with code pattern converter, the electrical optical converter and the modulator that are connected with this second encoder, with the defeated light-emitting window that is connected with this electrical optical converter and modulator; Defeated light inlet circuit then comprises defeated light inlet, photoelectric transformer, the amplifier that connects successively, with second decoder that is connected this amplifier and code pattern converter and phone clock recovery device.Wherein, defeated light inlet and defeated light-emitting window are the FC interface.
Further, said power-supply system comprises power supply changeover device, and second protector and the working station indicator that are connected with this power supply changeover device respectively.
Also be connected with light-emitting diode display on first decoder in the said main circuit ASIC unit, in order to show the state of whole transmission terminal.
Compared with prior art, the utlity model has following beneficial effect:
1. the utility model employing total digitalization technology is utilized advanced optical fiber transmission technique and gps satellite location technology, has realized real-time, the high accuracy transmission of data effectively;
2. in the utility model; Defeated light inlet and defeated light-emitting window all adopt the FC interface; Thereby overcome effectively the traditional data signal through cable transmission apart from weak point, poor anti jamming capability, be difficult to realize shortcomings such as two-forty transmission; Also solved simultaneously electromagnetic interference, encircle problems such as interference and thunderbolt, voltage surge, improved reliability, stability, fail safe and the real-time of the communication of bridge security Monitoring Data greatly.
Description of drawings
Fig. 1 is the system principle diagram of the utility model.
Fig. 2 is the theory diagram of main circuit ASIC unit in the utility model.
Fig. 3 is the theory diagram of data interface unit in the utility model.
Fig. 4 is the theory diagram of telephone interface unit in the utility model.
Fig. 5 is the theory diagram of Guang Kou unit in the utility model.
Fig. 6 is the theory diagram of power-supply system in the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further, the execution mode of the utility model includes but not limited to the following example.
Embodiment
As shown in Figure 1, the fibre optic data transmission terminal comprises main circuit ASIC unit, and the power-supply system, data interface unit, Ethernet interface, telephone interface unit, clock unit, Guang Kou unit and the light-emitting diode display that are connected with this main circuit ASIC unit respectively.Respectively above-mentioned each unit is described below.
One. main circuit ASIC unit
Main circuit ASIC unit is the main control part of whole optical fiber data transmission terminal machine, and its circuit theory is as shown in Figure 2, mainly comprises group road input circuit and crowd road output circuit.Wherein, crowd road input circuit comprises first decoder, and code pattern converter that is connected with the input of this first decoder and phone clock recovery device, with the deframer that is connected with its output; Crowd road output circuit then comprises first encoder, and the framing port that is connected with the input of this first encoder, with the code pattern converter that is connected with its output.The output of said deframer disposes low rate channel output, IA High Speed Channel output and three ports of Ethernet M II output, correspondingly, then disposes low rate channel input, IA High Speed Channel input and three ports of Ethernet M II input on the said framing port.Said clock unit is by the crystal oscillator process, and it is connected on code pattern converter and the phone clock recovery device, also is connected with phase-locked loop simultaneously.Said light-emitting diode display then is connected on first decoder, is used to show the control and the operating state of whole optical fiber data transmission terminal machine, if run into abnormal accident, and also can the display alarm state.
Two. data interface unit
Data interface unit is the input/output port that bridge security detects data, also is simultaneously group road input circuit and group connectivity port of road output circuit.As shown in Figure 3, data interface unit mainly comprises buffer and driver, and the interface protection device that is connected through Interface Matching agreement and level conversion agreement with this buffer and driver.This buffer and driver also are connected low rate channel output port and the low rate channel input port on the framing port on the deframer respectively; Then be circumscribed with signal input, output port on the interface protection device.The data that bridge security detects get into the fibre optic data transmission terminal from signal input port, through after a series of processing, get into optical fiber from the Guang Kou unit, transfer out then.
Three. telephone interface unit
Telephone interface unit is used to connect telephone set.As shown in Figure 4; Telephone interface unit comprises the clock multiple connection/tapped off signal processor that is connected with the output of deframer; With this A/D converter that clock multiple connection/the tapped off signal processor is connected, and the ringing current generator that is connected with this A/D converter respectively and first protector.Wherein, Clock multiple connection/tapped off signal processor comprises two parts: multiplexed signal processor and tapped off signal processor; The multiplexed signal processor is meant the signal processor of clock frequency at 64～2048K/S, and the tapped off signal processor is meant the signal processor of clock frequency at 2048～64K/S; A/D converter is mainly used in A/D, the D/A conversion that realizes corresponding signal, also is connected with the state output end mouth on it; Protected location is circumscribed with telephony interface.
Four. the Guang Kou unit
The Guang Kou unit is mainly used in the connection that realizes optical fiber, and accomplishes the mutual conversion of signal between light and electricity, for the transmission and the processing of signal are got ready.As shown in Figure 5; The Guang Kou unit comprises output light mouth circuit and defeated light inlet circuit; Wherein, defeated light-emitting window circuit comprises second encoder that is connected with code pattern converter, the electrical optical converter and the modulator that are connected with this second encoder, with the defeated light-emitting window that is connected with this electrical optical converter and modulator; Defeated light inlet circuit then comprises defeated light inlet, photoelectric transformer, the amplifier that connects successively, and is connected second decoder that this amplifier is connected with code pattern converter and phone clock recovery device.In addition, also be connected with alarm on the amplifier.In order to improve laser propagation effect, defeated light inlet and defeated light-emitting window all adopt the FC interface.
Five. power-supply system
Power-supply system is the power source of whole optical fiber data transmission terminal machine, and its function is to convert external power source to be fit to the use of fibre optic data transmission terminal working power.As shown in Figure 6, power-supply system mainly is made up of power supply changeover device, in addition, in order to protect power supply changeover device, also disposes second protector that is connected with power supply changeover device; Simultaneously, also be provided with the working station indicator that is connected with power supply changeover device, in order to the operating state of display power supply transducer.
In the utility model, each equipment and the components and parts that constitute the fibre optic data transmission terminal are existing mature equipment, concrete equipment and components and parts are not elaborated at this.
From signal transmission and reception two aspects the course of work of the utility model is described respectively below.
Signals transmission is following:
At first; Second protector in the power-supply system is connected with external power source, and foreign current gets into power-supply system, through to be fit to the work of fibre optic data transmission terminal the electric current of converting by power supply changeover device after second protector; At this moment; Working station indicator is lighted, and the electric current after the conversion is directly exported, and whole optical fiber data transmission terminal machine gets into operating state.
Secondly; The data that bridge security detects get into data interface unit from signal input port; Pass through successively after interface protection device, buffer and the driver, get into the framing port on the main circuit ASIC unit from the low rate channel input port, after by first coder processes; By code pattern converter the numeric data code type is transformed into the sign indicating number type that is fit to Optical Fiber Transmission, gets into defeated light-emitting window circuit again.
At last; Signal gets into after the defeated light-emitting window circuit; At first encode, carry out signal transformation and modulation by electrical optical converter and modulator then, make it to be transformed into the signal that is fit to Optical Fiber Transmission by second encoder; Get into optical fiber from defeated light-emitting window again, be transferred to the Surveillance center that needs this bridge security to detect data.
The signal receiving course is following:
At first, power-supply system is connected external power source, and gets into normal operating conditions; Secondly, the signal of coming through Optical Fiber Transmission enters the light inlet unit from defeated light inlet, advanced opto-electronic conversion successively, signal amplifies with decoding after, get in the crowd road input circuit of main circuit ASIC unit.
After this, signal carries out code conversion and phone clock recovery under the control of clock unit and phase-locked loop, decode, separate frame then, gets into data interface unit from the low rate channel output port again.
Signal gets into after the data cell, exports from signal output port behind process buffer and driver, the interface protection device successively.
In said process, because telephone interface unit is attached thereto through the IA High Speed Channel output port on the deframer, therefore, after signal was through deframer output, signal appearred in telephone interface unit.Handle back ringing current generator generation ringing-current through telephone interface unit, the station ringer sound is risen, note receiving with the staff who points out the fibre optic data transmission terminal.
In addition, in signals transmission, light-emitting diode display shows the work and the state of a control of optical fiber data transmission terminal machine in real time, takes place if any abnormal conditions, will send alarm prompt.
According to the foregoing description, just can realize the utility model well.
Claims (9)
1. the fibre optic data transmission terminal is characterized in that, comprises main circuit ASIC unit, and the data interface unit, Ethernet interface, telephone interface unit, clock unit, Guang Kou unit and the power-supply system that are connected with this main circuit ASIC unit respectively.
2. fibre optic data transmission terminal according to claim 1; It is characterized in that; Said main circuit ASIC unit comprises group road input circuit and crowd road output circuit, and wherein, crowd road input circuit comprises first decoder; And code pattern converter that is connected with the input of this first decoder and phone clock recovery device, with the deframer that is connected with its output; Crowd road output circuit then comprises first encoder, and the framing port that is connected with the input of this first encoder, with the code pattern converter that is connected with its output.
3. fibre optic data transmission terminal according to claim 2 is characterized in that, said clock unit is connected on code pattern converter and the phone clock recovery device, simultaneously, on code pattern converter and phone clock recovery device, also is connected with phase-locked loop.
4. according to claim 1 or 3 described fibre optic data transmission terminals; It is characterized in that; Said data interface unit comprises the buffer and the driver of the input of the output that connects deframer and framing port, and the interface protection device that is connected with driver with this buffer.
5. fibre optic data transmission terminal according to claim 4; It is characterized in that; Said telephone interface unit comprises the clock multiple connection/tapped off signal processor that is connected with the output of deframer; With this A/D converter that clock multiple connection/the tapped off signal processor is connected, and the ringing current generator that is connected with this A/D converter respectively, first protector and telephony interface.
6. fibre optic data transmission terminal according to claim 5; It is characterized in that; Said Guang Kou unit comprises output light mouth circuit and defeated light inlet circuit; Wherein, defeated light-emitting window circuit comprises second encoder that is connected with code pattern converter, the electrical optical converter and the modulator that are connected with this second encoder, with the defeated light-emitting window that is connected with this electrical optical converter and modulator; Defeated light inlet circuit then comprises defeated light inlet, photoelectric transformer, the amplifier that connects successively, with second decoder that is connected this amplifier and code pattern converter and phone clock recovery device.
7. fibre optic data transmission terminal according to claim 6 is characterized in that, said defeated light inlet and defeated light-emitting window are the FC interface.
8. fibre optic data transmission terminal according to claim 7 is characterized in that said power-supply system comprises power supply changeover device, and second protector and the working station indicator that are connected with this power supply changeover device respectively.
9. fibre optic data transmission terminal according to claim 8 is characterized in that, also is connected with light-emitting diode display on first decoder in the said main circuit ASIC unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203863809U CN202231726U (en) | 2011-10-12 | 2011-10-12 | Optical fiber data transmission terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203863809U CN202231726U (en) | 2011-10-12 | 2011-10-12 | Optical fiber data transmission terminal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231726U true CN202231726U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203863809U Expired - Fee Related CN202231726U (en) | 2011-10-12 | 2011-10-12 | Optical fiber data transmission terminal device |
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| Country | Link |
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| CN (1) | CN202231726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114900238A (en) * | 2022-05-10 | 2022-08-12 | 许昌开普检测研究院股份有限公司 | Isolation applying method for surge test of shielded communication line |
-
2011
- 2011-10-12 CN CN2011203863809U patent/CN202231726U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114900238A (en) * | 2022-05-10 | 2022-08-12 | 许昌开普检测研究院股份有限公司 | Isolation applying method for surge test of shielded communication line |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20121012 |