CN203445882U - Practical optical transceiver - Google Patents
Practical optical transceiver Download PDFInfo
- Publication number
- CN203445882U CN203445882U CN201320531216.1U CN201320531216U CN203445882U CN 203445882 U CN203445882 U CN 203445882U CN 201320531216 U CN201320531216 U CN 201320531216U CN 203445882 U CN203445882 U CN 203445882U
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- Prior art keywords
- transmitter
- signal level
- receiver
- conversion module
- level shift
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Abstract
The utility model discloses a practical optical transceiver. An RS232 signal level conversion circuit and an RS422 signal level conversion circuit of a transmitter is connected with the input end of a transmission channel selection module through a signal amplification circuit; the input end of the transmission channel selection module also directly receives TTL/E1 signals; the output end of the transmission channel selection module is connected with the input end of an electro-optical conversion module; the output end of the electro-optical conversion module is connected with a transmitter fiber connector; the transmitter fiber connector is connected with the initial end of a remote fiber; the receiver fiber connector of a receiver is connected with the tail end of the remote fiber and is connected with the input end of the electro-optical conversion module; and the output end of the electro-optical conversion module is connected with the RS232 signal level conversion circuit and the RS422 signal level conversion circuit through data. The practical optical transceiver has the advantages of simple structure, easy realization and quite high cost performance.
Description
Technical field
The utility model relates to a kind of optical transmitter and receiver, and refer in particular to and a kind ofly can realize TTL/E1, RS232, RS422 3 class signals transmit through fiber channel, more than transmitting range reaches 50km, the optical transmitter and receiver of higher cost performance practicality.
Background technology
The birth of optical fiber communication and development are the once important revolutions in telecommunication history, and it is to using light wave as information carrier, using a kind of communication mode of optical fiber as transmission medium.Due to optical fiber as transmission medium there is transmission frequency bandwidth, message capacity is large; Loss is low, repeater span is long; Wire diameter is thin, lightweight; Insulation, anti-electromagnetic interference performance is strong; Also have that resistance to corrosion is strong, capability of resistance to radiation is strong, reelability is good, without electric spark, reveal the advantages such as little, strong security.In different fields, be widely used, be mainly used in the public telecommunication network of local telephone network trunk line, long distance line, global communication network, various countries; Also for television transmission, industrial production field monitor and the scheduling of high-quality colour, traffic monitoring, control commander, cities and towns cable television network, community antenna system, fiber optic local area network and other as in aircraft, in airship, in naval vessels, under mine, power department, military affairs and have corrosion and have the middle uses such as radiation.And optical transmitter and receiver is as a part for whole optical fiber telecommunications system, play an important role, its performance, development all have a great impact the performance of whole system and development.
Current existing many ready-made optical transmitter and receivers on the market, general more complicated all, and also expensive, be not suitable for low-cost equipment and use.
Utility model content
For the existing complex structure of existing optical transmitter and receiver, high in cost of production problem, the utility model proposes a kind of practical optical transmitter and receiver, it is simple in structure, is easy to realize, and has higher cost performance.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of practical optical transmitter and receiver, described optical transmitter and receiver comprises transmitter and receiver, transmitter and receiver arranges in pairs, described transmitter comprises RS232 signal level shift circuit, RS422 signal level shift circuit, signal amplification circuit, transmission channel is selected module, electrooptic conversion module and the transmitter optical fiber connector, described RS232 signal level shift circuit, RS422 signal level shift circuit selects the input of module to join by signal amplification circuit and transmission channel, described transmission channel selects the input of module also directly to receive TTL/E1 signal, its output connects the input of electrooptic conversion module, the output of described electrooptic conversion module and the transmitter optical fiber connector join, the described transmitter optical fiber connector are connected with the top of remote fiber,
Described receiver comprises receiver fiber connector, photoelectric conversion module, RS232 signal level shift circuit, RS422 signal level shift circuit, described receiver fiber connector is connected with the end of remote fiber, and join with the input of photoelectric conversion module, the output of described photoelectric conversion module and RS232 signal level shift circuit, RS422 signal level shift circuit data are joined.
In preferred embodiment of the present utility model, described RS232 signal level shift circuit consists of HIN232 chip or consists of MAX232 chip.
Further, described RS422 signal level shift circuit consists of SN75179 chip or consists of MAX485 chip.
Further, described transmission channel selects module to consist of GAL16V8 chip.
Further, described electrooptic conversion module is optical transmission module HFBR-1528.
Further, described electrooptic conversion module is HDTR-48-1313125(TX).
Further, described photoelectric conversion module is Optical Receivers HFBR-2528.
Further, described photoelectric conversion module is HDTR-48-1313125(RX).
Optical transmitter and receiver of the present utility model, adopts LED assembly optical transmission module HFBR-1528 and Optical Receivers HFBR-2528, and the programmable logic device GAL16V8 of take has realized a kind of design of Simple And Practical optical transmitter and receiver as core devices.More than it can reach 50km for TTL signal, RS232 signal, RS422 signal transmission distance, the damage of signal is very little, has certain propagation delay time.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.
Fig. 1 is schematic diagram of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, the practical optical transmitter and receiver that the utility model provides mainly comprises transmitter 100 and receiver 200, and transmitter and receiver arranges in pairs.
Wherein, transmitter 100 comprises RS232 signal level shift circuit 101, RS422 signal level shift circuit 102, signal amplification circuit 103, transmission channel selection module 104, electrooptic conversion module 105 and the transmitter optical fiber connector 106.RS232 signal level shift circuit 101, RS422 signal level shift circuit 102 select the input of module 104 to join by signal amplification circuit 103 and transmission channel, transmission channel selects the input of module 104 also directly to receive TTL/E1 signal, its output connects the input of electrooptic conversion module 105, the output of electrooptic conversion module 105 and the transmitter optical fiber connector 106 join, and the transmitter optical fiber connector 106 are connected with the top of remote fiber 300.
Basis is upper again, can select to arrange between module 104 and electrooptic conversion module 105 signal amplification circuit at transmission channel again.
The optical transmitter and receiver forming thus, at transmitting terminal, TTL/E1 signal is directly given channel selecting module; RS232 signal and RS422 signal are given channel selecting module after being converted to Transistor-Transistor Logic level by level shifting circuit respectively.By channel selecting module, according to the signal type that will transmit, select corresponding signal, after amplifying circuit amplifies, by electro-optical conversion circuit, be converted to light signal, through optical fiber transmission, deliver to receiving terminal.
At receiving terminal, by photoelectric switching circuit, light signal is converted to the signal of telecommunication, TTL/E1 signal is directly exported, and for RS232 signal and RS422 signal, after level conversion, exports.
Specifically being implemented as follows of such scheme:
RS232 and RS422 level shifting circuit
For RS232 signal and RS422 signal, all need just can enter transmission channel after over level conditioning.RS232 signal level shift circuit adopts MAX232, and RS422 signal level shift circuit is used MAX485.
Wherein, MAX232 is mainly comprised of 3 parts: voltage multiplier, RS232 receiver, RS232 transmitter.MAX485 adopts half duplex communication mode, completes the conversion between Transistor-Transistor Logic level and RS422 level.
As an alternative, RS232 level shifting circuit can consist of HIN232 chip, and RS422 signal level shift circuit consists of SN75179 chip.
Transmission channel is selected modular design
The effect of channel selecting is according to the signal type that will transmit, to realize signal to select, and selects programmable logic device GAL16V8 in this element circuit.
Electric light, Electric ciruit design of photo-electric conversion
Opto-electronic conversion reflector (being electrooptic conversion module) is selected HFBRl528, and it is to be formed by a light emitting diode combined with 650nm wavelength.By simple driving loop, reflector can reach the baud rate of 10MHz.
As an alternative, electrooptic conversion module can adopt HDTR-48-1313125(TX).
Electric light conversion receiver (being photoelectric conversion module) is selected HFBR2528: the photodiode of a silicon pin and the digital integrated circuit of generation logical consistency output, consist of.The output of receiver is one and TTL and CMOS logical consistency " push-pull cascade ".
As an alternative, photoelectric conversion module can adopt HDTR-48-1313125(RX).
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. a practical optical transmitter and receiver, described optical transmitter and receiver comprises transmitter and receiver, transmitter and receiver arranges in pairs, it is characterized in that, described transmitter comprises RS232 signal level shift circuit, RS422 signal level shift circuit, signal amplification circuit, transmission channel is selected module, electrooptic conversion module and the transmitter optical fiber connector, described RS232 signal level shift circuit, RS422 signal level shift circuit selects the input of module to join by signal amplification circuit and transmission channel, described transmission channel selects the input of module also directly to receive TTL/E1 signal, its output connects the input of electrooptic conversion module, the output of described electrooptic conversion module and the transmitter optical fiber connector join, the described transmitter optical fiber connector are connected with the top of remote fiber,
Described receiver comprises receiver fiber connector, photoelectric conversion module, RS232 signal level shift circuit, RS422 signal level shift circuit, described receiver fiber connector is connected with the end of remote fiber, and join with the input of photoelectric conversion module, the output of described photoelectric conversion module and RS232 signal level shift circuit, RS422 signal level shift circuit data are joined.
2. a kind of practical optical transmitter and receiver according to claim 1, is characterized in that, described RS232 signal level shift circuit consists of HIN232 chip or consists of MAX232 chip.
3. a kind of practical optical transmitter and receiver according to claim 1, is characterized in that, described RS422 signal level shift circuit consists of SN75179 chip or consists of MAX485 chip.
4. a kind of practical optical transmitter and receiver according to claim 1, is characterized in that, described transmission channel selects module to consist of GAL16V8 chip.
5. a kind of practical optical transmitter and receiver according to claim 1, is characterized in that, described electrooptic conversion module is optical transmission module HFBR-1528.
6. a kind of practical optical transmitter and receiver according to claim 1, is characterized in that, described electrooptic conversion module is HDTR-48-1313125(TX).
7. a kind of practical optical transmitter and receiver according to claim 1, is characterized in that, described photoelectric conversion module is Optical Receivers HFBR-2528.
8. a kind of practical optical transmitter and receiver according to claim 1, is characterized in that, described photoelectric conversion module is HDTR-48-1313125(RX).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531216.1U CN203445882U (en) | 2013-08-28 | 2013-08-28 | Practical optical transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531216.1U CN203445882U (en) | 2013-08-28 | 2013-08-28 | Practical optical transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445882U true CN203445882U (en) | 2014-02-19 |
Family
ID=50096893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320531216.1U Expired - Fee Related CN203445882U (en) | 2013-08-28 | 2013-08-28 | Practical optical transceiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203445882U (en) |
-
2013
- 2013-08-28 CN CN201320531216.1U patent/CN203445882U/en not_active Expired - Fee Related
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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: 20140219 Termination date: 20140828 |
|
| EXPY | Termination of patent right or utility model |