CN105335315A - Multi-serial data remote transmission device and method - Google Patents
Multi-serial data remote transmission device and method Download PDFInfo
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- CN105335315A CN105335315A CN201510726432.5A CN201510726432A CN105335315A CN 105335315 A CN105335315 A CN 105335315A CN 201510726432 A CN201510726432 A CN 201510726432A CN 105335315 A CN105335315 A CN 105335315A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0002—Serial port, e.g. RS232C
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/38—Universal adapter
- G06F2213/3852—Converter between protocols
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Abstract
The invention belongs to the field of computer communication, and discloses a multi-serial data remote transmission device and method, which can be applied to realizing lower cost, stronger antijamming capability, bi-directional 144kbps transmission rate, and 3-5km transmission distance. The remote transmission device comprises a twisted-pair, and two RS232 to UNI interface modules respectively connected to two ends of the twisted-pair, wherein the RS232 to UNI interface modules are used for multiplexing RS232 serial signals of multiple data serial ports into one path of UNI interface signal, or branching the one path of UNI interface signal into the multiple RS232 serial signals; a pair of twisted-pair is used for transmitting the one path of UNI interface signal.
Description
Technical field
The present invention relates to computer communication field, particularly relate to a kind of long distance transmitter and method of Multi-serial port data.
Background technology
In the occasion using high power station, because the emissive power in radio station is larger, hundreds of wattage magnitude can be reached, therefore in order to reduce the interference of broadcasting station transmitter to its receiver, usually need transmitter to be placed in the place from beyond receiver 3 ~ 5 kilometers, therefore high power station just needs one to possess lower cost, stronger interference rejection ability, convenient erection, also wants can support the business such as speech, data simultaneously, and can realize the Multi-serial port transmission technology of 3 ~ 5 km transmission distances.
At present, the means of communication that serial ports can be made to realize transmission range far away mainly contains: RS485 bussing technique, xDSL technology and wireless data transmission technology etc.RS485 bussing technique needs use two pairs of twisted-pair feeders usually, and its maximum transmission distance only has 1.2 kilometers.XDSL technology is owing to employing comparatively complicated ofdm communication system, and therefore its volume, weight, power consumption and cost are all larger.Wireless data transmission technology volume, weight, power consumption and cost are usually also comparatively large, also there is the defect that antijamming capability is more weak, Electro Magnetic Compatibility is poor simultaneously.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of long distance transmitter and method of Multi-serial port data, thus achieve lower cost, stronger antijamming capability, the transfer rate of two-way 144kbps and the transmission range of 3 ~ 5 kilometers.
For achieving the above object, embodiments of the invention adopt following technical scheme to be achieved.
Technical scheme one:
A long distance transmitter for Multi-serial port data, described long distance transmitter comprises: a twisted-pair feeder, and two RS232 being connected to described twisted-pair feeder two ends turn uni interface module;
Wherein, described RS232 turns uni interface module for the RS232 rs 232 serial interface signal of multiple digital serial port is multiplexed to a road uni interface signal, or is divided by a described road uni interface signal and be connected into multiple RS232 rs 232 serial interface signal;
Described twisted-pair feeder is for transmitting a described road uni interface signal.
The feature of technical scheme one and being further improved to:
(1) described RS232 turns uni interface module and comprises: a RS232 level transferring chip, the fpga chip be connected with described RS232 level transferring chip, the uni interface chip be connected with described fpga chip;
Wherein, described RS232 level transferring chip, for being Transistor-Transistor Logic level by RS232 level conversion, or is converted to RS232 level by Transistor-Transistor Logic level;
Described fpga chip, for being sent in Frame stored in uni interface by the communication data of multiple serial ports, or obtaining the communication data of each serial ports, carrying out communications parameter configuration simultaneously to uni interface chip from receiving data frames;
Described uni interface chip, for being sent by described twisted-pair feeder or received the communication data of each serial ports.
(2) described RS232 level transferring chip is MAX3232 chip, and described fpga chip is Spartan-6FPGA chip XL6SLX45, and described uni interface chip is MT9173 chip.
(3) comprise in described fpga chip: the insertion of MT9173 controller, fifo buffer and communication data and extraction module;
Described MT9173 controller is used for arranging MT9173 chip operation in holotype or from pattern by port MS0, MS1 and MS2, and the transfer rate of MT9173 chip makes physical layer;
MT9173 controller in holotype by signal wire C4, F0 tranmitting data register signal and frame synchronizing signal to MT9173 chip;
MT9173 controller is receiving clock signal and the frame synchronizing signal of MT9173 chip by signal wire C4, F0 from pattern;
MT9173 controller passes through signal wire CDSTi to MT9173 chip sending controling instruction, and is read the duty of MT9173 chip by signal wire CDSTo;
Described fifo buffer, for carrying out buffer-stored to the communication data from multiple serial ports, wherein, the transfer rate of the communication data of multiple serial ports meets:
R
i＝16nkbpsn＝1,2,3,4,5,6,7
Wherein, R
ibe the transfer rate of i-th serial ports, N is the number of serial ports.
(4) at transmitting terminal, the insertion of described communication data and extraction module, for taking out (1.5R successively within the time interval of each 1.5 milliseconds from the fifo buffer of a jth serial ports
j/ 8) individual byte, and by the signal wire DSTo of MT9173 chip insert send in Frame with
for in the data field of reference position;
At receiving end, the insertion of described communication data and extraction module, take out data for the signal wire DSTi by MT9173 chip, and data write in the fifo buffer of multiple serial ports from the data field of receiving data frames.
Technical scheme two:
A remote transmission method for Multi-serial port data, described transmission method comprises the steps:
Receive the RS232 rs 232 serial interface signal of multiple digital serial port;
The RS232 rs 232 serial interface signal of described multiple digital serial port is multiplexed to a road uni interface signal;
By a road uni interface signal described in a Double-strand transmission;
Convert a described road uni interface signal to multiple RS232 rs 232 serial interface signal;
Described multiple RS232 rs 232 serial interface signal is write multiple digital serial port.
The present invention adopts as above technical scheme, mainly make use of N-ISDNUNI interfacing in telecommunications network to realize the low cost long-distance transmissions of multiple serial ports, by first the communication data that multiple serial ports will transmit to be put into the transmission Frame of uni interface at transmitting terminal, then uni interface signal is passed through a Double-strand transmission to receiving end, self-adaptation echo suppression techniques is then utilized correctly to receive uni interface signal at receiving end, and from receiving data frames, extract the communication data that each serial ports will receive, thus achieve lower cost, stronger antijamming capability, the transfer rate of two-way 144kbps, with the transmission range of 3 ~ 5 kilometers.
RS485 bussing technique is utilized to be a kind of implementation the most close with the present invention to realize the long-distance transmissions of Multi-serial port.By comparison, the present invention has the following advantages: (1) RS485 bus requirements uses two pairs of twisted-pair feeders could realize the full-duplex communication of multiple serial ports, and the present invention only needs a twisted-pair feeder, and therefore use cost is the former 1/2; (2) maximum transmission distance of RS485 bus is 1219 meters, and the transfer rate of about 20kbps can only be realized in this distance, and the maximum transmission distance of the present invention when line is born in use is 5 kilometers, and the transfer rate of 144kbps can be realized in the transmission range of 3 kilometers.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The long distance transmitter schematic diagram of a kind of Multi-serial port data that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 turns the structural representation one of uni interface module for RS232 that the embodiment of the present invention provides;
Fig. 3 turns the structural representation two of uni interface module for RS232 that the embodiment of the present invention provides;
Fig. 4 turns the structural representation three of uni interface module for RS232 that the embodiment of the present invention provides;
The remote transmission method schematic flow sheet of a kind of Multi-serial port data that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The present invention proposes a kind of passing through by telecommunications network N-ISDNUNI interfacing, the communication data that will transmit by multiple serial ports puts into the transmission Frame of uni interface, then will send Frame by a Double-strand transmission to opposite end, thus can realize possessing lower cost, compared with the advantages such as strong anti-interference ability, the Multi-serial port transmission technology supporting two-way 144kbps transfer rate and 3 ~ 5 km transmission distances simultaneously.
As shown in Figure 1, the long distance transmitter of a kind of Multi-serial port data that the embodiment of the present invention provides, described long distance transmitter comprises: two RS232 turn uni interface module 1 and 2, and connects the twisted-pair feeder 3 that described two RS232 turn uni interface module.
Wherein, described RS232 turns uni interface module for the RS232 rs 232 serial interface signal of multiple digital serial port is multiplexed to a road uni interface signal, or is divided by a described road uni interface signal and be connected into multiple RS232 rs 232 serial interface signal.
Described twisted-pair feeder is for transmitting a described road uni interface signal.
You need to add is that, described two RS232 turn usual one of uni interface module and work in holotype, and another works in from pattern.
Concrete, the RS232 working in holotype turns uni interface module and utilizes oneself clock signal and frame synchronizing signal to the frame that transmits and receive data, and by twisted-pair feeder, the clock signal of oneself and frame synchronizing signal are sent to the opposing party, work in and turn uni interface module from the RS232 of pattern and then utilize these two signals (i.e. clock signal and frame synchronizing signal) transmit and receive data frame, thus realize the synchronous of sending and receiving both sides.
The characteristic impedance of wherein said twisted-pair feeder is 120 Ω.
As shown in Figure 2, described RS232 turns uni interface module and comprises: a RS232 level transferring chip 11, the fpga chip 12 be connected with described RS232 level transferring chip 11, the uni interface chip 13 be connected with described fpga chip 12.
Wherein, described RS232 level transferring chip 11, for being Transistor-Transistor Logic level by RS232 level conversion, or is converted to RS232 level by Transistor-Transistor Logic level.
Described fpga chip 12, for being sent in Frame stored in uni interface by the communication data of multiple serial ports, or obtains the communication data of each serial ports from receiving data frames.
Described uni interface chip 13, for by twisted-pair feeder by uni interface dataframe to opposite end, simultaneously also receive the uni interface Frame from opposite end by twisted-pair feeder.
Exemplary, as shown in Figure 3, described RS232 level transferring chip is MAX3232, and described fpga chip is Spartan-6FPGA chip XL6SLX45, and described uni interface chip is MT9173.
MT9173 and peripheral circuit primary responsibility thereof complete the function such as carrying of the conversion of the non-equilibrium signal of uni interface and balanced signal, over-voltage over-current protection, circuit encoding and decoding, self-adaptation echo suppressing, bit timing, frame synchronization, 2 B channels and 1 D channel; in figure 3; transformer T1 has been responsible for the conversion of non-equilibrium signal and balanced signal; resistance R1 and two diode D1 and D2 realizes overvoltage protection, and chip MT9173 has then been responsible for the functions such as circuit encoding and decoding, self-adaptation echo suppressing, bit timing, frame synchronization and 2B+D carrying.
The RS232 level conversion of rs 232 serial interface signal is Transistor-Transistor Logic level by MAX3232 then primary responsibility, and gives FPGA, and contrary process.The data of multiple serial ports are put into the corresponding position of uni interface transmission Frame by FPGA then primary responsibility, and from receiving data frames, the data of each serial ports are taken out in corresponding position simultaneously, and give each serial ports.
Mainly comprise in fpga chip: the insertion of MT9173 controller, fifo buffer and communication data and extraction etc. three part composition, as shown in Figure 4.MT9173 controller primary responsibility completes (1) and passes through C4, F0 signal wire tranmitting data register, frame synchronizing signal to MT9173 in holotype, is passing through clock, the frame synchronizing signal of the reception of C4, F0 signal wire from MT9173 from pattern; (2) the master/slave pattern of MT9173 and the transfer rate of Physical layer are set by MS0 ~ 2 signal wire; (3) by CDSTi signal wire to MT9173 sending controling instruction, as: start self-adaptation echo suppressing, start the synchronous etc. of uni interface, the duty of MT9173 is read by CDSTo signal wire, as: current synchronous regime, the success or not of self-adaptation echo suppressing etc.
Fifo buffer primary responsibility carries out buffer-stored to the communication data from each serial ports.Line speed due to uni interface is 160bps, and frame length is 1.5 milliseconds, comprises the synchronization character of 18 bits, the data of 216 bits and the Operation and Maintenance information of 6 bits, as shown in Figure 4.Because each serial ports can only insert integral words joint in a frame, therefore each Serial Port Transmission speed can only be 16,32,48,64,80,96,112kbps, and the transfer rate sum of each serial ports must be less than or equal to 144kbps, namely meets following formula:
R
i＝16nkbpsn＝1,2,3,4,5,6,7
R in formula
ibe the transfer rate of i-th serial ports, N is the number of serial ports.The transfer rate R of each serial ports
ican be arranged by the configuration serial ports shown in Fig. 3 by user.
At transmitting terminal, the insertion of described communication data and extraction module were used for from the fifo buffer of a jth serial ports, taking out (1.5R successively within the time interval of each 1.5 milliseconds
j/ 8) individual byte, and by the signal wire DSTo of MT9173 insert in transmission frame with
for in the data field of reference position;
At receiving end, the insertion of described communication data and extraction module are used for from the data field of receiving data frames, taking out data by the signal wire DSTi of MT9173 chip, and corresponding data are write in the fifo buffer of multiple serial ports.
The embodiment of the present invention additionally provides a kind of remote transmission method of Multi-serial port data, and described transmission method is applied in the long distance transmitter of a kind of Multi-serial port data as above, and as shown in Figure 5, described transmission method comprises the steps:
Step 1, receives the RS232 rs 232 serial interface signal of multiple digital serial port.
Step 2, is multiplexed to a road uni interface signal by the RS232 rs 232 serial interface signal of described multiple digital serial port.
Step 3, by a road uni interface signal described in Double-strand transmission.
Step 4, converts a described road uni interface signal to multiple RS232 rs 232 serial interface signal.
Step 5, writes multiple digital serial port by described multiple RS232 rs 232 serial interface signal.
The present invention proposes a kind of passing through by telecommunications network N-ISDNUNI interfacing, namely the data that multiple serial ports will transmit are put into the Frame of uni interface by transmitting terminal, then the self-adaptation echo suppressing that uni interface is comparatively ripe is utilized, modulation /demodulation, Frame is passed through a Double-strand transmission to receiving end by the technology such as bit timing and frame synchronization, receiving end then takes out the data of each serial ports from Frame, and send to each serial ports, achieve and possess lower cost, comparatively strong anti-interference ability, smaller size smaller, weight, the advantages such as power consumption and erection convenience, support the Multi-serial port transmission technology of two-way 144kbps transfer rate and 3 ~ 5 km transmission distances simultaneously.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that programmed instruction is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (6)
1. a long distance transmitter for Multi-serial port data, is characterized in that, described long distance transmitter comprises: a twisted-pair feeder, and two RS232 being connected to described twisted-pair feeder two ends turn uni interface module;
Wherein, described RS232 turns uni interface module for the RS232 rs 232 serial interface signal of multiple digital serial port is multiplexed to a road uni interface signal, or is divided by a described road uni interface signal and be connected into multiple RS232 rs 232 serial interface signal;
Described twisted-pair feeder is for transmitting a described road uni interface signal.
2. the long distance transmitter of a kind of Multi-serial port data according to claim 1, it is characterized in that, described RS232 turns uni interface module and comprises: a RS232 level transferring chip, the fpga chip be connected with described RS232 level transferring chip, the uni interface chip be connected with described fpga chip;
Wherein, described RS232 level transferring chip, for being Transistor-Transistor Logic level by RS232 level conversion, or is converted to RS232 level by Transistor-Transistor Logic level;
Described fpga chip, for being sent in Frame stored in uni interface by the communication data of multiple serial ports, or obtaining the communication data of each serial ports, carrying out communications parameter configuration simultaneously to uni interface chip from receiving data frames;
Described uni interface chip, for being sent by described twisted-pair feeder or received the communication data of each serial ports.
3. the long distance transmitter of a kind of Multi-serial port data according to claim 2, it is characterized in that, described RS232 level transferring chip is MAX3232 chip, and described fpga chip is Spartan-6FPGA chip XL6SLX45, and described uni interface chip is MT9173 chip.
4. the long distance transmitter of a kind of Multi-serial port data according to claim 3, is characterized in that, comprise in described fpga chip: the insertion of MT9173 controller, fifo buffer and communication data and extraction module;
Described MT9173 controller is used for arranging MT9173 chip operation in holotype or from pattern by port MS0, MS1 and MS2, and the transfer rate of MT9173 chip makes physical layer;
MT9173 controller in holotype by signal wire C4, F0 tranmitting data register signal and frame synchronizing signal to MT9173 chip;
MT9173 controller is receiving clock signal and the frame synchronizing signal of MT9173 chip by signal wire C4, F0 from pattern;
MT9173 controller passes through signal wire CDSTi to MT9173 chip sending controling instruction, and is read the duty of MT9173 chip by signal wire CDSTo;
Described fifo buffer, for carrying out buffer-stored to the communication data from multiple serial ports, wherein, the transfer rate of the communication data of multiple serial ports meets:
R
i＝16nkbpsn＝1,2,3,4,5,6,7
Wherein, R
ibe the transfer rate of i-th serial ports, N is the number of serial ports.
5. the long distance transmitter of a kind of Multi-serial port data according to claim 4, is characterized in that,
At transmitting terminal, the insertion of described communication data and extraction module, for taking out (1.5R successively within the time interval of each 1.5 milliseconds from the fifo buffer of a jth serial ports
j/ 8) individual byte, and by the signal wire DSTo of MT9173 chip insert send in Frame with
for in the data field of reference position;
At receiving end, the insertion of described communication data and extraction module, take out data for the signal wire DSTi by MT9173 chip, and data write in the fifo buffer of multiple serial ports from the data field of receiving data frames.
6. a remote transmission method for Multi-serial port data, is characterized in that, described transmission method comprises the steps:
Receive the RS232 rs 232 serial interface signal of multiple digital serial port;
The RS232 rs 232 serial interface signal of described multiple digital serial port is multiplexed to a road uni interface signal;
By a road uni interface signal described in a Double-strand transmission;
Convert a described road uni interface signal to multiple RS232 rs 232 serial interface signal;
Described multiple RS232 rs 232 serial interface signal is write multiple digital serial port.
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| CN201510726432.5A CN105335315A (en) | 2015-10-30 | 2015-10-30 | Multi-serial data remote transmission device and method |
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| CN201510726432.5A CN105335315A (en) | 2015-10-30 | 2015-10-30 | Multi-serial data remote transmission device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106326152A (en) * | 2016-08-25 | 2017-01-11 | 青岛海信电器股份有限公司 | Display terminal, and serial port signal transmission method and device thereof |
| CN108988846A (en) * | 2018-08-28 | 2018-12-11 | 出门问问信息科技有限公司 | A kind of signal transmitting apparatus and system |
| CN113609067A (en) * | 2021-06-25 | 2021-11-05 | 天津津航计算技术研究所 | Implementation system of 32-channel RS485 interface card |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106326152A (en) * | 2016-08-25 | 2017-01-11 | 青岛海信电器股份有限公司 | Display terminal, and serial port signal transmission method and device thereof |
| CN106326152B (en) * | 2016-08-25 | 2019-06-04 | 青岛海信电器股份有限公司 | Display terminal and its serial interface signal transmission method, device |
| CN108988846A (en) * | 2018-08-28 | 2018-12-11 | 出门问问信息科技有限公司 | A kind of signal transmitting apparatus and system |
| CN108988846B (en) * | 2018-08-28 | 2022-02-25 | 出门问问信息科技有限公司 | Signal transmission device and system |
| CN113609067A (en) * | 2021-06-25 | 2021-11-05 | 天津津航计算技术研究所 | Implementation system of 32-channel RS485 interface card |
| CN113609067B (en) * | 2021-06-25 | 2024-03-19 | 天津津航计算技术研究所 | System for realizing 32-channel RS485 interface card |
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