CN2598267Y - Data light transmitter-receiver - Google Patents
Data light transmitter-receiver Download PDFInfo
- Publication number
- CN2598267Y CN2598267Y CNU032235178U CN03223517U CN2598267Y CN 2598267 Y CN2598267 Y CN 2598267Y CN U032235178 U CNU032235178 U CN U032235178U CN 03223517 U CN03223517 U CN 03223517U CN 2598267 Y CN2598267 Y CN 2598267Y
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- data
- inverse transformer
- optical receiver
- amplifier
- comparator
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Abstract
The utility model relates to a data light terminal, which comprises a data transmitting channel and a data receiving channel, wherein the data transmitting channel comprises an RS422 transformer, an amplifier and a light transmitter which is connected to the output circuit of the amplifier. The data receiving channel comprises a light receiver, a preamplifier and a comparator successively connected; the output end of the comparator is respectively connected to an RS422 inverse transformer and an RS232 inverse transformer. The utility model adopts the module with a compact structure; the input and output ports are connected via connecting pieces. With convenient usage and maintenance, the utility model can be directly accessed into the existing data control system, with the advantages of low power consumption, small harmonic distortion, large band width, 60 db of signal to noise ratio and good anti-interference ability. The probation on site proves that the utility model has stable running, 10 to 6 bit error rate and single-multimodal transmission range from 3 km to over 34 km.
Description
Technical field
The utility model relates to network communication equipment, specifically is a kind of data optical receiver that is used for technical grade special optic fibre communication network.
Background technology
In the general industry transmission system, 4km uses coaxial cable, twisted-pair feeder etc. with interior transmission means more at present, uses coaxial cable, the decay of twisted-pair feeder transmission signals greatly, and transmission range is short, poor anti jamming capability.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, is provided for the data optical receiver of technical grade special optic fibre communication network, to satisfy the demand of broadband communication network.
The utility model data optical receiver comprises data transmission passage and Data Receiving passage two parts.The data transmission passage comprises RS422 converter (1), amplifier (2) and optical transmitting set (3), and optical transmitting set (3) is connected to the output loop of putting woodenware (2), and RS422 converter (1) connects the input of amplifier (2); The Data Receiving passage comprises optical receiver (4), preamplifier (5), comparator (6), RS422 inverse transformer (7) and RS232 inverse transformer (8), optical receiver (4) is connected to the input circuit of preamplifier (5), the input of the output termination comparator (6) of preamplifier (5), the output of comparator (6) connects the input of RS422 inverse transformer (7) and RS232 inverse transformer (8) respectively.
The data transmission passage of the utility model data optical receiver and Data Receiving channels designs in same casing, compact conformation, input/output port connects by plug connector, uses, easy to maintenance.It is low in energy consumption, and harmonic distortion is little, bandwidth wide (5HZ-10MHZ), and signal to noise ratio is 60db, number compatible RS232, RS422, TTL transformer (NRZ1, Manchester, two-phase), data transmission bauds is: DC-100 baud (NRZ), good in anti-interference performance.
The notebook data optical transceiver is used for optical fiber communication, and it is stable through on-the-spot probationary certificate, and the error rate is 10-6, and transmission range can reach 34km, installs and simply can directly insert existing Data Control treatment system, product price ratio height.It utilizes wavelength-division multiplex technique to send and receive data, power output-13dB, receiving sensitivity 30dB on one standard 9/125 single module optical cable.
Description of drawings
Fig. 1 is the structure chart of the utility model GF02XX data optical receiver;
Fig. 2 is its theory diagram;
Fig. 3 is the embodiment circuit diagram;
Fig. 4 is that it uses schematic diagram.
Embodiment
Further specify below in conjunction with accompanying drawing.
The data transmission passage of the utility model data optical receiver and Data Receiving channels designs are in same casing shown in Figure 1, and input, the corresponding plug connector of output port are installed in the casing both sides, and compact conformation has made things convenient for use, maintenance.
As shown in Figure 2, the notebook data optical transceiver comprises data transmission passage and Data Receiving passage two parts.The data transmission passage comprises RS422 converter (1), amplifier (2) and optical transmitting set (3), and optical transmitting set (3) is connected to the output loop of amplifier (2), and RS422 converter (1) connects the input of amplifier (2); The Data Receiving passage comprises optical receiver (4), preamplifier (5), comparator (6), RS422 inverse transformer (7) and RS232 inverse transformer (8), optical receiver (4) is connected to the input circuit of preamplifier (5), the input of the output termination comparator (6) of preamplifier (5), the output of comparator (6) connects the input of RS422 inverse transformer (7) and RS232 inverse transformer (8) respectively.
The data transmission passage of notebook data optical transceiver and Data Receiving passage are two separate circuit modules, the signal that data transmission passage handle receives is after RS422 converter (1) conversion, amplifier (2) amplify, drive optical transmitting set (3) and export corresponding light signal, light signal passes to Networks of Fiber Communications through optical fiber; Simultaneously, the Data Receiving passage is converted to the signal of telecommunication to the light signal that optical receiver (4) receives, amplify through preamplifier (5), send into RS422 inverse transformer (7) after comparator (6) is handled and RS232 inverse transformer (8) is carried out conversion of signals, the digital signal after the conversion is delivered to control system through lead-out terminal.
Shown in Fig. 3 embodiment circuit diagram, the RS422 inverse transformer (7) and the RS422 converter (1) of notebook data optical transceiver all can adopt MAX485 circuit etc.Wherein RS422 inverse transformer (7) is made up of MAX485 chip U6 and resistance R 25 etc., after the signal that the DI termination receipts of U6 are exported from comparator (6) carries out internal conversion, outputs to 5,4 ends of J3 from A, the B end of U6.RS422 converter (1) is made up of MAX485 chip U3 and resistance R 24 etc., after the A of U3, B termination receive and carry out internal conversion from the data-signal of 7, the 6 ends input of J3, outputs to amplifier (2) from the R0 end of U3 and amplifies.
Its RS232 inverse transformer (7) is made up of RS232 chip U5 and capacitor C 7, C8, C9, C10 etc., after the T1IN termination of U5 is received and carried out internal conversion from the signal of comparator (6) output, outputs to 3 ends of J3 from the T1OUT end of U5.
The amplifier of data transmission passage (2) is made up of triode Q1 and current-limiting resistance R11, the R10 etc. that are connected to the biasing resistor R12 of its base stage and are connected to its collector electrode, the base stage of triode Q1 meets the output R0 of U3, described optical transmitting set (3) is a LD light-emitting diode D4, D4 is connected between the collector electrode and power supply of Q1 by current-limiting resistance R11, after the signal that amplifier (2) is sent RS422 converter (1) here amplifies, driving is connected on the optical transmitting set D4 of its output loop, produces corresponding light signal.
The preamplifier of Data Receiving passage (5) is made up of MAX452 operational amplifier U1 and C1, C3, D2, R3, R4, R5, R6, R21 etc.; Described optical receiver (4) is a photodiode D1, D1 be connected to U1-IN end and ground between, D1 the light signal that receives be converted to signal of telecommunication input U1-the IN end, amplify the back through U1 and export from the VOUT end of U1, give the input-IN of comparator (6).
The comparator of Data Receiving passage (6) is made up of LT1016 circuit U 2 and its peripheral cell C2, R1, R2 etc.Comparator (6) with U2-signal that IN end receives from preamplifier (5) and+the reference signal comparison of IN end and carry out inter-process after, give the T1IN end of U5 and the DI of U6 holds from its output QOUT output signal.Comparator (6) also can adopt the circuit of other model.
With reference to Fig. 3, the whole working of notebook data optical transceiver is as follows:
In data transmission, import from 7,6 ends of J3 from the data-signal (RS422 signal) of outside input, through U3 (MAX485) conversion, after amplifier Q1 amplifies, be converted to light signal by optical transmitting set D4 and send in the Networks of Fiber Communications again.
In Data Receiving, optical receiver D1 is converted to the signal of telecommunication to the light signal of input, input U1 (MAX452) amplifies, after U2 (LT1016) compares, be converted to data-signal (RS232 signal, RS422 signal) by U5 (MAX232) and U6 (MAX485) respectively and export from 3,5,4 ends of J3 respectively again.
Consult and use 4, two notebook data optical transceivers of schematic diagram and can directly insert in the available data control system as optical sender and optical receiver respectively, can receive simultaneously and transmitted data signal.The light signal that reception is transmitted from Networks of Fiber Communications after opto-electronic conversion, conversion process, outputs to the control appliance system; Simultaneously, the signal of telecommunication that the control appliance system is transmitted outputs to Networks of Fiber Communications after amplification, electric light conversion.
It is stable through on-the-spot probationary certificate for notebook data optical transceiver (GF02XX), and the error rate is 10-6, and transmission range can reach 34km, installs and simply can directly insert existing Data Control treatment system, product price ratio height.It utilizes wavelength-division multiplex technique to send and receive data, power output-13dB, receiving sensitivity 30dB on one standard 9/125 single module optical cable.
Claims (6)
1, a kind of data optical receiver is characterized in that: comprise data transmission passage and Data Receiving passage two parts;
The data transmission passage comprises RS422 converter (1), amplifier (2) and optical transmitting set (3), and optical transmitting set (3) is connected to the output loop of amplifier (2), and RS422 converter (1) connects the input of amplifier (2);
The Data Receiving passage comprises optical receiver (4), preamplifier (5), comparator (6), RS422 inverse transformer (7) and RS232 inverse transformer (8), optical receiver (4) is connected to the input circuit of preamplifier (5), the input of the output termination comparator (6) of preamplifier (5), the output of comparator (6) connects the input of RS422 inverse transformer (7) and RS232 inverse transformer (8) respectively.
2, according to the described data optical receiver of claim 1, it is characterized in that: described RS422 inverse transformer (7) and RS422 converter (1) all adopt the MAX485 circuit.
3, according to the described data optical receiver of claim 1, it is characterized in that: the RS232 inverse transformer (8) of described Data Receiving passage adopts RS232 or MAX232 circuit.
4, according to the described data optical receiver of claim 1, it is characterized in that: the amplifier of described data transmission passage (2) comprises triode Q1, and the base stage of Q1 meets a biasing resistor R12, and the collector electrode of Q1 connects a current-limiting resistance.
5, according to the described data optical receiver of claim 1, it is characterized in that: described preamplifier (5) adopts the MAX452 circuit.
6, according to the described data optical receiver of claim 1, it is characterized in that: described comparator (6) adopts the LT1016 circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032235178U CN2598267Y (en) | 2003-01-30 | 2003-01-30 | Data light transmitter-receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032235178U CN2598267Y (en) | 2003-01-30 | 2003-01-30 | Data light transmitter-receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2598267Y true CN2598267Y (en) | 2004-01-07 |
Family
ID=34162844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032235178U Expired - Fee Related CN2598267Y (en) | 2003-01-30 | 2003-01-30 | Data light transmitter-receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2598267Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655431A (en) * | 2011-03-02 | 2012-09-05 | 南京南瑞继保电气有限公司 | High-sensitive multimode fiber receiving circuit |
-
2003
- 2003-01-30 CN CNU032235178U patent/CN2598267Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655431A (en) * | 2011-03-02 | 2012-09-05 | 南京南瑞继保电气有限公司 | High-sensitive multimode fiber receiving circuit |
| CN102655431B (en) * | 2011-03-02 | 2015-04-08 | 南京南瑞继保电气有限公司 | Multimode fiber receiving circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20040107 Termination date: 20120130 |