CN202043114U - Signal receiving and sending device - Google Patents
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- CN202043114U CN202043114U CN2011201639029U CN201120163902U CN202043114U CN 202043114 U CN202043114 U CN 202043114U CN 2011201639029 U CN2011201639029 U CN 2011201639029U CN 201120163902 U CN201120163902 U CN 201120163902U CN 202043114 U CN202043114 U CN 202043114U
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Abstract
The utility model discloses a signal receiving and sending device, which comprises a plurality of signal level translators, a parallel/ serial converter, a coder/ decoder, a modulator/ demodulator and a photoelectric converter, wherein the signal level translators convert multiple paths of RS232 level signals into transistor-transistor logic/complementary metal oxide semiconductor (TTL/COMS) level signals, and the level signals are sent into a central processing unit (CPU) to code and modulate data; the parallel/ serial converter is used for converting multiple paths of level signals into one path of information flow in the data sending process, and converting one path of information flow into multiple paths of electric signals in the receiving process; the coder/ decoder is used for coding the path of information flow into multiple block codes in the data sending process, and decoding the multiple block codes into one path of information flow in the receiving process; the modulator/ demodulator is used for modulating the block codes into multiple high-order modulation symbols, or modulating the high-order modulation symbols into a plurality of block codes; and the photoelectric converter is used for converting the high-order modulation symbols into the optical signal to be output. According to the signal receiving and sending device, long-distance fibre optical communication among universal asynchronous receiver/transmitter (UART) ports can be realized, antijamming capability is enhanced, and communication quality is improved.
Description
Technical field
The utility model relates to a kind of signal transmission and reception apparatus, particularly relate to a kind of signal transmission and reception apparatus that can realize remote optical fiber communication between UART (Universal Asynchronous Receiver/Transmitter, the promptly universal asynchronous reception/dispensing device) port.
Background technology
Along with the continuous development of industrial circle, the interconnection of equipment, more and more higher to the transfer of data requirement, transmission range is more and more longer, transmitted data amount is increasing.Common UART transmits by cable, and transmission range is short, cost is high, be subjected to the interference of external environment can not guarantee the time performance and the correctness of data easily.
The signal of UART transmission is generally the RS232/RS422/RS485 level signal, and with regard to the RS232 level signal, logical one is-5--15V; Logical zero is+5-+15V that noise margin is 2V.Promptly require receiver to discern to be low to moderate+signal of 3V is as logical zero, and high signal to-3V is as logical one.Because its common mode inhibition capacity is poor, adds the distributed capacitance on the twisted-pair feeder, its transmitting range is about 15 meters to the maximum, and flank speed is 20kb/s, so RS-232 only is fit to the communication between the local device.
Electronic applications also has another kind of level signal, i.e. TTL (Transistor-Transistor Logic, i.e. transistor-transistor logic integrated circuit) level signal commonly used.The Transistor-Transistor Logic level signal is very desirable for the transfer of data of the device interior of computer processor control, at first the transfer of data of the device interior of computer processor control is also lower for the less demanding and thermal losses of power supply, and the Transistor-Transistor Logic level signal directly is connected with integrated circuit and does not need expensive line driver and acceptor circuit in addition; Moreover the transfer of data of the device interior of computer processor control is carried out under high speed, and the operation of TTL interface be able to meet this requirement.The communication of TTL type be to adopt the parallel data transmission means, and the parallel data transmission just has been not suitable for for the distance that surpasses 10 feet in most cases.This is the reason owing to reliability and cost two sides.Because exist inclined to one side phase and asymmetric problem in parallel interface, these problems are all influential to reliability.
TTL mainly contains standard TTL, high-speed type TTL (H-TTL), low-power consumption type TTL (L-TTL), Schottky type TTL (S-TTL), five series of low-power consumption Schottky type TTL (LS-TTL).The minimum 2V of standard TTL input high level (being logical one), the minimum 2.4V of output high level, representative value 3.4V, the maximum 0.8V of input low level (being logical zero), the maximum 0.4V of output low level, representative value 0.2V.The minimum 2V of S-TTL input high level, the minimum I class of output high level 2.5V, II, III class 2.7V, representative value 3.4V, the maximum 0.8V of input low level, the maximum 0.5V of output low level.The minimum 2V of LS-TTL input high level, the minimum I class of output high level 2.5V, II, III class 2.7V, representative value 3.4V, the maximum I class of input low level 0.7V, II, III class 0.8V, the maximum I class of output low level 0.4V, II, III class 0.5V, representative value 0.25V.
With also have a kind of CMOS (Complementary metal-oxide-semiconductor, i.e. complementary metal oxide semiconductors (CMOS)) level signal like the Transistor-Transistor Logic level class signal.Cmos circuit output high level (being logical one) is about 0.9*Vcc, and output low level (being logical zero) is about 0.1*Vcc, and wherein, Vcc is generally 12V, so the CMOS level signal has very wide noise margin, antijamming capability is also strong than TTL.
Yet, in the prior art, no matter be to use any level signal in above three kinds, all also there is not to realize remote two-forty ground method for communicating between the UART port.
The utility model content
The technical problems to be solved in the utility model is can't two-forty to transmit the defective of multichannel UART signal at a distance simultaneously in order to overcome prior art, and a kind of signal transmission and reception apparatus of realizing simultaneously remote optical fiber communication between the multichannel UART port is provided.
The utility model solves above-mentioned technical problem by following technical proposals: a kind of signal transmission and reception apparatus, it is characterized in that, described signal transmission and reception apparatus comprises: a plurality of signal level converters convert multichannel RS232 level signal to the TTL/COMS level signal and send into coding, the modulation that CPU carries out data; One parallel/serial transducer is used for multi-channel electric signal is converted to one road information flow in the process of transmitting of data, in receiving course one road information flow is changed to multi-channel electric signal; One coder/decoder is used for one road information flow is encoded to a plurality of code blocks in data transmission procedure, in receiving course a plurality of code blocks is decoded as one road information flow; One modulator/demodulator is used for a plurality of code blocks are modulated to a plurality of high order modulation symbols, or is a plurality of code blocks with a plurality of high order modulation symbol demodulations; One optical-electrical converter, being used for a plurality of high order modulation symbol transition is to send behind the light signal, or receiving optical signals and described light signal is converted to a plurality of high order modulation symbols.
Preferably, described signal level converter is used for the mutual conversion between RS232 level and the Transistor-Transistor Logic level.
Preferably, described signal level converter is used for the mutual conversion between RS232 level and the CMOS level.
Preferably, it is one road information flow that described parallel/serial transducer is used for 4～8 tunnel electrical signal conversion, or one road information flow is changed to 4～8 road signals of telecommunication.
Preferably, it is one road information flow that described parallel/serial transducer is used for 8 tunnel electrical signal conversion, or one road information flow is changed to 8 road signals of telecommunication.
Positive progressive effect of the present utility model is: by signal transmission and reception apparatus of the present utility model, can realize the remote optical fiber communication of UART port, strengthen antijamming capability, improve communication quality.In addition, signal transmission and reception apparatus of the present utility model is by string and conversion and coding, and transmission has improved utilization of network bandwidth when having realized multiple signals.Characteristic such as signal transmission and reception apparatus of the present utility model has also utilized optical fiber communication speed height, transmission range is long and cost is low is applicable to interconnection and networking between the industrial communication equipment, can carry out point-to-point, the single-point networking mode to multiple spot.
Description of drawings
Fig. 1 is the module diagram of the signal transmission and reception apparatus of the utility model preferred embodiment.
Fig. 2 is the detailed maps of the input and output of PHY_IC module among Fig. 1.
Fig. 3 is the detailed module diagram of optical-electrical converter among Fig. 1.
The module diagram of Fig. 4 for communicating by letter between the signal transmission and reception apparatus of the utility model preferred embodiment.
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.In Figure of description, the element with similar structures or function will be used the components identical symbolic representation.Accompanying drawing is each embodiment of the present utility model for convenience of explanation just, is not the explanation that will carry out limit to the utility model, neither limit scope of the present utility model.
According to a preferred embodiment of the present utility model, a kind of signal transmission and reception apparatus 100 comprises (as shown in Figure 1): a plurality of signal level converter 111-118, be respectively applied for input one road signal of telecommunication, and the logic level of changing described one road signal of telecommunication is exported described one road signal of telecommunication then; One parallel/serial transducer 120 is used for multi-channel electric signal is converted to one road information flow, or one road information flow is changed to multi-channel electric signal; One coder/decoder 130 is used for one road information flow is encoded to a plurality of code blocks or a plurality of code blocks are decoded as one road information flow; One modulator/demodulator 140 is used for a plurality of code blocks are modulated to a plurality of high order modulation symbols, or is a plurality of code blocks with a plurality of high order modulation symbol demodulations; One optical-electrical converter 150, being used for a plurality of high order modulation symbol transition is to send behind the light signal, or receiving optical signals and described light signal is converted to a plurality of high order modulation symbols.Described coder/decoder 130 and described modulator/demodulator 140 all can be by existing techniques in realizing, so do not repeat them here.
In a preferred embodiment, described signal level converter 111-118 is used for the mutual conversion between RS232 level and Transistor-Transistor Logic level or RS232 level and the CMOS level.As shown in Figure 2, there are two interfaces in described signal level converter 110 left sides, be connected with UART port 210, one of them is used for receiving the RS232 level signal from described UART port 210, and another is used for the RS232 level signal that is converted by the TTL/CMOS level signal is exported to described UART port 210.Also there are two interfaces on described level translator 110 right sides, one is used for the TTL/CMOS level signal that is converted by the RS232 level signal is exported to described coder/decoder 120, and another is used for receiving the TTL/CMOS level signal from described coder/decoder 120.Preferably, the described signal level converter 111-118 SN75176 chip that can be Texas Instrument.
In a preferred embodiment, described parallel/serial transducer 120 can be one road information flow with 4～8 tunnel electrical signal conversion, or one road information flow is changed to 4～8 road signals of telecommunication.In another preferred embodiment, described parallel/serial transducer 120 can be one road information flow with 8 tunnel electrical signal conversion, or one road information flow is changed to 8 road signals of telecommunication.Described parallel/serial transducer 120 can be by existing techniques in realizing, so do not repeat them here.
In a preferred embodiment, described optical-electrical converter 150 is divided into inner sending module and inner receiver module.Wherein, described inner sending module comprises: a data buffer 311, a laser modulator 320, a Temperature Detector 330, a laser driver 340 and a generating laser 350; Described inner receiver module comprises: two data buffers 312 and 313, one electric signal amplifier 360, a signal sensor 370, a low pass filter 380 and an optical receiver 390.Preferably, described optical-electrical converter 150 can be the RTXM 144TL Transistor-Transistor Logic level optical module of Wuhan photoelectricity company, transmission rate 64M.
In a preferred embodiment, the UART port uses structure that described signal transmission and reception apparatus 100 realizes optical fiber communications as shown in Figure 4: an end is 8 data collecting device 411-418, is connected with a described signal transmission and reception apparatus 101; The other end is 8 data receiving terminal 421-428, also is connected with a described signal transmission and reception apparatus 102.Wherein, described signal transmission and reception apparatus 101 is connected by optical fiber with 102.More specifically, the transmitting terminal of described signal transmission and reception apparatus 101 directly is connected by optical fiber with the transmitting terminal of described signal transmission and reception apparatus 102 with the receiving terminal of the receiving terminal of described signal transmission and reception apparatus 102, described signal transmission and reception apparatus 101.Thus, described signal transmission and reception apparatus 101 and 102 can receive and send light signal simultaneously and communicate, promptly with the pattern communication of full duplex.
Though more than described embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection range of the present utility model is limited by appended claims.Those skilled in the art can make numerous variations or modification to these execution modes under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection range of the present utility model.
Claims (5)
1. a signal transmission and reception apparatus is characterized in that, described signal transmission and reception apparatus comprises:
A plurality of signal level converters convert multichannel RS232 level signal to the TTL/COMS level signal and send into coding, the modulation that CPU carries out data;
One parallel/serial transducer is used for multi-channel electric signal is converted to one road information flow in the process of transmitting of data, in receiving course one road information flow is changed to multi-channel electric signal;
One coder/decoder is used for one road information flow is encoded to a plurality of code blocks in the process of transmitting of data, in receiving course a plurality of code blocks is decoded as one road information flow;
One modulator/demodulator is used for a plurality of code blocks are modulated to a plurality of high order modulation symbols, or is a plurality of code blocks with a plurality of high order modulation symbol demodulations;
One optical-electrical converter, being used for a plurality of high order modulation symbol transition is to send behind the light signal, or receiving optical signals and described light signal is converted to a plurality of high order modulation symbols.
2. signal transmission and reception apparatus as claimed in claim 1 is characterized in that, described signal level converter is used for the mutual conversion between RS232 level and the Transistor-Transistor Logic level.
3. signal transmission and reception apparatus as claimed in claim 1 is characterized in that, described signal level converter is used for the mutual conversion between RS232 level and the CMOS level.
4. signal transmission and reception apparatus as claimed in claim 1 is characterized in that, it is one road information flow that described parallel/serial transducer is used for 4～8 tunnel electrical signal conversion, or one road information flow is changed to 4～8 road signals of telecommunication.
5. signal transmission and reception apparatus as claimed in claim 1 is characterized in that, it is one road information flow that described parallel/serial transducer is used for 8 tunnel electrical signal conversion, or one road information flow is changed to 8 road signals of telecommunication.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201639029U CN202043114U (en) | 2011-05-20 | 2011-05-20 | Signal receiving and sending device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201639029U CN202043114U (en) | 2011-05-20 | 2011-05-20 | Signal receiving and sending device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295128A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Method and system for carrying out phone micropayment through LED light |
| CN103580755A (en) * | 2013-09-29 | 2014-02-12 | 中国科学院等离子体物理研究所 | Universal type high-speed data transmission device having light receiving and sending functions at same time |
| CN106547714A (en) * | 2015-11-30 | 2017-03-29 | 上海英联电子科技有限公司 | 232 transmitter circuit of High-Speed RS with self adaptation edge accelerating circuit |
| CN106788732A (en) * | 2015-11-24 | 2017-05-31 | 上海航天科工电器研究院有限公司 | A kind of Low speed photo modular converter |
| CN109359076A (en) * | 2018-11-19 | 2019-02-19 | 上海航天测控通信研究所 | A kind of multichannel RS-422 communication device and communicating terminal based on Digital I/O |
| CN110749830A (en) * | 2019-11-22 | 2020-02-04 | 淮南市矿用电子技术研究所 | Mining lithium battery pack management system acquisition unit and acquisition method thereof |
-
2011
- 2011-05-20 CN CN2011201639029U patent/CN202043114U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295128A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Method and system for carrying out phone micropayment through LED light |
| CN103580755A (en) * | 2013-09-29 | 2014-02-12 | 中国科学院等离子体物理研究所 | Universal type high-speed data transmission device having light receiving and sending functions at same time |
| CN106788732A (en) * | 2015-11-24 | 2017-05-31 | 上海航天科工电器研究院有限公司 | A kind of Low speed photo modular converter |
| CN106547714A (en) * | 2015-11-30 | 2017-03-29 | 上海英联电子科技有限公司 | 232 transmitter circuit of High-Speed RS with self adaptation edge accelerating circuit |
| CN109359076A (en) * | 2018-11-19 | 2019-02-19 | 上海航天测控通信研究所 | A kind of multichannel RS-422 communication device and communicating terminal based on Digital I/O |
| CN110749830A (en) * | 2019-11-22 | 2020-02-04 | 淮南市矿用电子技术研究所 | Mining lithium battery pack management system acquisition unit and acquisition method thereof |
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Granted publication date: 20111116 Termination date: 20140520 |