CN1543130A - Remote monitoring data transmission method and implementing device therefor - Google Patents
Remote monitoring data transmission method and implementing device therefor Download PDFInfo
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- CN1543130A CN1543130A CNA031133754A CN03113375A CN1543130A CN 1543130 A CN1543130 A CN 1543130A CN A031133754 A CNA031133754 A CN A031133754A CN 03113375 A CN03113375 A CN 03113375A CN 1543130 A CN1543130 A CN 1543130A
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Abstract
This invention relates to a transmission method and its application device for remote monitor data for solving the problem of unstable monitor system resulted from software reform on the basis of using transmission channel bandwidth as much as possible. This invention applies the following technology: an asynchronous serial interface outputs the data to a serial/parallel switch unit to finish the switch then the data is put in a latch unit which outputs it to a parallel/serial switch unit for switching then to be output to a synchronous serial multiplex unit multiplexed with the data to the unit from the synchronous serial interface to occupy a time slot together which is output to a time slot exchange unit exchanging it to a definite time slot to be merged with PCM stream from the slave E1interface and output from the master E1 interface.
Description
Technical field
The present invention relates to a kind of transmission method and device for carrying out said thereof of remote monitoring data, relate in particular to data transmission method and device for carrying out said thereof in the telecommunications industry long distance control system.
Background technology
In telecommunications industry, the PCM resource that is used for long distance control system is very limited, usually utilizes a 64K time slot to transmit the image data of multi-medium datas such as the image of compression and voice and smart machine simultaneously.Existing method is packaged in multi-medium data and image data together usually, transmits according to certain agreement, according to this agreement data is unpacked in data processing centre again, if use different agreements, then needs to change software.Application number: 99124690.X, the application for a patent for invention of publication number: CN1302136A discloses the method and apparatus that transmits image data, low speed image and voice simultaneously on July calendar year 2001 4, its technical scheme that adopts is, utilize synchronous serial interface images acquired and speech data, be connected to the timeslot multiplex chip; By the image data that asynchronous serial port is gathered smart machine, utilize CPU software to carry out complicated protocol processes, the data after the processing are connected to the timeslot multiplex chip; The timeslot multiplex chip is finished time gas exchange, is linked in the telecommunication transmission net through the E1 interface.
Though the scheme that this patent application provides makes the separately transmission of multi-medium data and image data, certain flexibility is arranged, but this scheme still has the very problem of strong dependency to software when still having avoided transmission smart machine data, for miscellaneous smart machine, there is multiple intelligent protocol, if utilizing CPU software gathers, the program that then must write various version is corresponding with various intelligent protocols, can bring huge software work amount like this, too frequent modification software increases software defect simultaneously, causes the whole monitoring system reliability to reduce.
Summary of the invention
For overcoming deficiency of the prior art, on the basis that as far as possible utilizes the transmission channel bandwidth, reduce software complexity, solution long distance control system transmitting software is revised too frequent, causes the supervisory control system problem of unstable, and the technical solution used in the present invention is:
The transmission method of remote monitoring data comprises the following steps:
By CPU element finish main E1 interface, from the initialization of E1 interface, TSIU time slot interchange unit;
By synchronous serial interface interface receiving multimedia data, receive the smart machine data by the asynchronous serial port interface;
In addition, also comprise the following steps:
The asynchronous serial port interface outputs to serial with data and finishes string and conversion, put into latch units then, latch units outputs to parallel/serial converting unit with data and carries out and go here and there conversion, output to the synchronous serial interface Multiplexing Unit then, the data that output to the synchronous serial interface Multiplexing Unit with the synchronous serial interface interface are carried out multiplexing, take a time slot jointly, output to TSIU time slot interchange unit, by TSIU time slot interchange unit with the time slot of this time gas exchange to appointment, merge with pcm stream, by main E1 interface output from the E1 interface;
Timing control unit carries out sequencing control to serial, latch units, parallel/serial converting unit, synchronous serial interface interface respectively.
The transmitting device of remote monitoring data, comprise respectively with from the E1 interface, main E1 interface, the CPU element that TSIU time slot interchange unit links to each other, wherein TSIU time slot interchange unit respectively with from the E1 interface, main E1 interface links to each other, comprise the synchronous serial interface interface that connects the multi-medium data input in addition, the asynchronous serial port interface that connects the input of smart machine data, the asynchronous serial port interface is through serial, latch units, parallel/serial converting unit connects the synchronous serial interface Multiplexing Unit, the synchronous serial interface interface connects the synchronous serial interface Multiplexing Unit, the synchronous serial interface Multiplexing Unit connects TSIU time slot interchange unit, and timing control unit connects serial respectively, latch units, parallel/serial converting unit, the synchronous serial interface interface.
Described serial, parallel/serial converting unit, the synchronous serial interface Multiplexing Unit, latch units, timing control unit can be integrated in the programmable logic device.
The model of described programmable logic device is EPM7128AETC.
2M clock signal and 8K synchronizing signal that the used clock signal of described timing control unit comes autonomous E1 interface to provide, timing control unit forms needed clock of synchronous serial interface interface and enable signal; Form the 16K sampling pulse signal of asynchronous serial port interface; Form the 8K clock of latch units; Form the 2M clock and the enable signal of parallel/serial converting unit.
Described synchronous serial interface Multiplexing Unit is by constituting with door.
Described synchronous serial interface Multiplexing Unit will carry out multiplexing from the data of parallel/serial converting unit and synchronous serial interface interface, make it take a 64K time slot jointly.
Described TSIU time slot interchange unit merges the time gas exchange of serial port unit output to the time slot of appointment with from the pcm stream of E1 interface, by main E1 interface output.
Described synchronous serial interface interface uses clock to be 2M, and occupied bandwidth is 48K.
Described asynchronous serial port interface receives the smart machine data that baud rate is not more than 8K.
The transmission method of remote monitoring data provided by the invention and device for carrying out said thereof, make the remote monitoring data finish transmission by hardware fully, even change smart machine kind, do not need the software of monitoring transmission is changed yet, thereby compared with prior art, do not need because the software protocol of synchronous/asynchronous serial ports connected equipment changes and too much change transmitting software, simplified the amount of writing of software, reach in maximum and utilize under the prerequisite of transfer resource, reduce opening of supervision control engineering and safeguard complexity, save the maintenance cost of remote monitoring, the purpose of the stability of raising long distance control system and the flexibility of networking.Especially the control point remote for the place, that condition is arduous, behind use the present invention, because monitoring transmission commissioning staff does not use the scene, the effect of using the present invention to obtain is just more remarkable.
Description of drawings
Fig. 1 is the transmission method work schematic diagram of remote monitoring data.
Fig. 2 is the sequential chart of changing according to the asynchronous serial port that the inventive method realizes.
Fig. 3 is the multiplexing sequential chart of realizing according to the inventive method of serial data.
Fig. 4 is the transmitting device structural representation of remote monitoring data.
Fig. 5 is according to using the embodiments of the invention schematic diagram.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, by CPU element finish main E1 interface 8, from the initialization of E1 interface 7, TSIU time slot interchange unit 6.
Asynchronous serial port unit 1 and smart machine carry out the asynchronous serial port communication, the data that serial 2 is gathered on the asynchronous serial port unit 1, finish string and conversion, parallel data is buffered in the latch units 9, under the control of enable signal that timing control unit 10 sends and clock, parallel/serial converting unit 3 is finished the parallel/serial conversion of latch units 9 dateouts.
Under the control of enable signal that timing control unit 10 sends and clock, synchronous serial interface unit 4 carries out the multi-medium data communication, work in the DCE mode in synchronous serial interface unit 4, promptly synchronous serial interface unit 4 oneself does not produce clock and synchronizing signal, and these signals provide by external circuit.Synchronous serial interface Multiplexing Unit 5 uses with door and finishes parallel/serial converting unit 3 and synchronous serial interface unit 4 data multiplexing, forms a 64K time slot through multiplexing back.According to sampling thheorem, being used for must be greater than 2 times of asynchronous serial port baud rate fa to the clock frequency of asynchronous serial-port data sampling fs.
Be fa＜fs/2, used bandwidth is 64K time slot, i.e. a fs+fsync=64k
The bandwidth that the setting synchronous serial interface takies is 48K,
Then the asynchronous serial port occupied bandwidth is 64K-48K=16K.
So asynchronous serial port baud rate fa＜16k/2=8K.
These 64K time slot data are finished the time interval insertion function by TSIU time slot interchange unit 6, and this time gas exchange is merged to the time slot of appointment with from the pcm stream of E1 interface 7, are linked in the transmission network by main E1 interface unit 8.Timing control unit 10 receives 2M clock and the 8K synchronizing signal that main E1 interface unit 8 provides, and through logic and sequential control, forms various control signals, can be with reference to figure 2 and Fig. 3 for concrete sequential relationship.
Fig. 2 and Fig. 3 have illustrated the logical relation of control signal involved in the present invention and clock signal, and Fig. 2 has described in E1 interface one frame time, i.e. in 1/8K (125us) second time, the conversion timing sequence of asynchronous serial-port data, a are the 2M master clock of main E1 interface 8; B is the data of asynchronous serial port; C is the 16K sampling clock; D is the 8K synchronizing signal of main E1 interface 8; E is the parallel/serial conversion enable signal of asynchronous serial-port data; F is the data waveform of asynchronous serial-port data after parallel/serial.
As shown in Figure 2: baud rate is the data b of the asynchronous serial port of 4.8Kbps, the rising edge of 16K sampling clock c constantly, be 2 serial 2 timing sampling successively by width, use the latch signal of the trailing edge of 8K synchronizing signal d as latch units 9, the data of up-to-date asynchronous serial port are placed in the latch units 9, when the parallel/serial conversion enable signal e of asynchronous serial-port data is high level, on the 2M of main E1 interface 8 master clock a, jump along constantly, parallel/serial converting unit 3 is sent data successively, the data waveform f after the formation asynchronous serial-port data is parallel/serial.
According to sampling thheorem, 16K＞＞4.6K, can not cause dropout; In time, can only carry out double sampling at 1/8K (125us), so adopt 2 serial 2.
Fig. 3 has described the multiplexing sequential relationship of serial data that realizes according to the inventive method, comprises 8K synchronizing signal g; 2M clock signal h; Time slot enable signal i; Synchronous serial interface enable signal j; The parallel/serial conversion enable signal k of asynchronous serial-port data; Synchronous serial interface data 1; And pcm stream m.
8K synchronizing signal g represents the beginning of an E1 frame, time slot enable signal i width is 64K, just take the 0th time slot, synchronous serial interface enable signal j width is 48K, the parallel/serial conversion enable signal k of asynchronous serial port asynchronous serial-port data width is 16K, just taken the 0th time slot, used one simple ' with door ' just can finish the multiplexing of the data waveform f after parallel/serial of asynchronous serial-port data among synchronous serial interface data 1 and Fig. 2.Forming the TSIU time slot interchange unit 6 that pcm stream m re-uses among Fig. 1 is inserted into this time slot arbitrarily in the 1-31 time slot.
Fig. 4 is the transmitting device structural representation of remote monitoring data.
In the drawings, asynchronous serial port interface 1 ' adopts RS232/422 mode and smart machine to carry out the asynchronous serial port communication, uses optocoupler to finish photoelectricity and isolates; Use parallel port width is that 2 serial 2 ' is gathered this data, finishes string and conversion; Parallel data is buffered in the latch units 9 ', and latch units 9 ' data width is 2, and under the control of enable signal that timing control unit 10 ' sends and clock, width is that 2 parallel/serial converting unit 3 ' is finished parallel/serial conversion.
Under the control of enable signal that timing control unit 10 ' sends and clock, synchronous serial interface interface chip 4 ' and multimedia equipment communication are used optocoupler to finish photoelectricity and are isolated.
Synchronous serial interface unit 4 ' carries out the multi-medium data communication; Synchronous serial interface Multiplexing Unit 5 ' uses with door and finishes parallel/serial converting unit 3 ' and synchronous serial interface unit 4 ' data multiplexing, form 64K time slot data through multiplexing back and finish the time interval insertion function by TSIU time slot interchange unit 6 ', TSIU time slot interchange unit 6 ' is made of the chip that for model is MT8985, MT8985 can provide the full exchange of 256 time slots, TSIU time slot interchange unit 6 ' is inserted into this time slot arbitrarily in the 1-31 time slot, also will constitute simultaneously from the data of the chip DS21354 of E1 interface 7 ' and be inserted into other time slot, the data in all time slots will be linked in the transmission network by the chip DS21354 that constitutes main E1 interface 8 '.Chip DS21354 provides a yard fractal transform, and E1 is provided framer, and the Clock Extraction function is provided.
Timing control unit 10 ' receives 2M clock and the 8K synchronizing signal that main E1 interface chip DS21354 provides, and through logic and sequential control, forms various control signals, can be with reference to figure 2 and Fig. 3 for concrete sequential relationship.
In Fig. 4, the programmable logic device 11 ' that adopts EPM7128AETC is with serial 2 ', parallel/serial converting unit 3 ', synchronous serial interface Multiplexing Unit 5 ', latch units 9 ', timing control unit 10 ' integrates, EPM7128AETC can provide 128 macrocells, can reduce logic chip like this,, increase the flexibility of revising as the number of 74 family chips.
Fig. 5 is an embodiment schematic diagram of realizing according to the present invention, be to describe the networking mode in the practical application of the present invention, multimedia equipment is connected by the transmitting device of interface V.24 and remote monitoring data shown in Figure 4, smart machine is connected with the transmitting device of remote monitoring data by RS232/422, the transmitting device of remote monitoring data is linked in the SDH/PDH transmission network by main E1, and the transmitting device of remote monitoring data links to each other with the smart machine processing center with multimedia processing center with RS232/422 by V2.4 respectively.
Because multimedia equipment and smart machine data are by independence, transparent transmission, do not carry out the translation of host-host protocol, so for transport module, no matter use which type of multimedia transmission agreement and intelligent data communications protocol, do not need software is changed, saved human cost, increased the stability of supervisory control system.
Claims (10)
1. the transmission method of remote monitoring data is characterized in that, comprises the following steps:
By CPU element (12) finish main E1 interface unit (8), from the initialization of E1 interface (7), TSIU time slot interchange unit (6);
By the input of synchronous serial interface interface (4) receiving multimedia data, receive the input of smart machine data by asynchronous serial port interface (1);
Asynchronous serial port interface (1) outputs to serial (2) with data and finishes string and conversion, put into latch units (9) then, latch units (9) outputs to parallel/serial converting unit (3) with data and carries out and go here and there conversion, outputing to synchronous serial interface Multiplexing Unit (5) then carries out multiplexing with the data that synchronous serial interface interface (4) outputs to synchronous serial interface Multiplexing Unit (5), take a time slot jointly, output to TSIU time slot interchange unit (6), by TSIU time slot interchange unit (6) with the time slot of this time gas exchange to appointment, merge with pcm stream, export by main E1 interface (8) from E1 interface (7);
Timing control unit (10) carries out sequencing control to serial (2), latch units (9), parallel/serial converting unit (3), synchronous serial interface interface (4) respectively.
2. the device for carrying out said of the transmission method of remote monitoring data, comprise respectively with from E1 interface (7), main E1 interface (8), the CPU element (12) that TSIU time slot interchange unit (6) links to each other, wherein TSIU time slot interchange unit (6) respectively with from E1 interface (7), main E1 interface (8) links to each other, comprise the synchronous serial interface interface (4) that connects the multi-medium data input in addition, the asynchronous serial port interface (1) that connects the input of smart machine data, it is characterized in that, asynchronous serial port interface (1) is through serial (2), latch units (9), parallel/serial converting unit (3) connects synchronous serial interface Multiplexing Unit (5), synchronous serial interface interface (4) connects synchronous serial interface Multiplexing Unit (5), synchronous serial interface Multiplexing Unit (5) connects TSIU time slot interchange unit (6), and timing control unit (10) connects serial (2) respectively, latch units (9), parallel/serial converting unit (3), synchronous serial interface interface (4).
3. the transmitting device of a kind of remote monitoring data according to claim 2 is characterized in that, described serial (2), parallel/serial converting unit (3), synchronous serial interface Multiplexing Unit (5), latch units (9), timing control unit (10) is integrated in the programmable logic device (11).
4. the transmitting device of a kind of remote monitoring data according to claim 3 is characterized in that, the model of described programmable logic device (11) is EPM7128AETC.
5. the transmitting device of a kind of remote monitoring data according to claim 2, it is characterized in that, 2M clock signal and 8K synchronizing signal that the used clock signal of described timing control unit (10) comes autonomous E1 interface (8) interface to provide, timing control unit (10) forms needed clock of synchronous serial interface interface (4) and enable signal; Form the 16K sampling pulse signal of asynchronous serial port interface (1); Form the 8K clock of latch units (9); Form the 2M clock and the enable signal of parallel/serial converting unit (3).
6. the transmitting device of a kind of remote monitoring data according to claim 2 is characterized in that, described synchronous serial interface Multiplexing Unit (5) is by constituting with door.
7. the transmitting device of a kind of remote monitoring data according to claim 2, it is characterized in that, described synchronous serial interface Multiplexing Unit (5) will carry out multiplexing from the data of parallel/serial converting unit (3) and synchronous serial interface interface (4), make it take a 64K time slot jointly.
8. the transmitting device of a kind of remote monitoring data according to claim 2, it is characterized in that, described TSIU time slot interchange unit (6) merges the time gas exchange of serial port unit (5) output to the time slot of appointment with from the pcm stream of E1 interface (7), export by main E1 interface (8).
9. the transmitting device of a kind of remote monitoring data according to claim 2 is characterized in that, described synchronous serial interface interface (4) uses clock to be 2M, and occupied bandwidth is 48K.
10. the transmitting device of a kind of remote monitoring data according to claim 2 is characterized in that, described asynchronous serial port interface (1) receives the smart machine data that baud rate is not more than 8K.
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| CNB031133754A CN1275427C (en) | 2003-04-30 | 2003-04-30 | Remote monitoring data transmission method and implementing device therefor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992572B (en) * | 2005-12-31 | 2012-02-15 | 北京畅通达通信技术有限公司 | Method and apparatus for multiplexing from low-speed light port to 2M transmission line and protection switching |
| CN103425614A (en) * | 2012-05-24 | 2013-12-04 | 中国科学院空间科学与应用研究中心 | Synchronous serial data transmitting device for singlechip microcomputer system |
| CN103942311A (en) * | 2014-04-21 | 2014-07-23 | 湖南深拓智能设备股份有限公司 | Multiplexing method of monitoring system variables |
-
2003
- 2003-04-30 CN CNB031133754A patent/CN1275427C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992572B (en) * | 2005-12-31 | 2012-02-15 | 北京畅通达通信技术有限公司 | Method and apparatus for multiplexing from low-speed light port to 2M transmission line and protection switching |
| CN103425614A (en) * | 2012-05-24 | 2013-12-04 | 中国科学院空间科学与应用研究中心 | Synchronous serial data transmitting device for singlechip microcomputer system |
| CN103425614B (en) * | 2012-05-24 | 2016-08-03 | 中国科学院空间科学与应用研究中心 | Synchronous serial data dispensing device and method thereof for Single Chip Microcomputer (SCM) system |
| CN103942311A (en) * | 2014-04-21 | 2014-07-23 | 湖南深拓智能设备股份有限公司 | Multiplexing method of monitoring system variables |
| CN103942311B (en) * | 2014-04-21 | 2017-04-12 | 湖南深拓智能设备股份有限公司 | Multiplexing method of monitoring system variables |
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| CN1275427C (en) | 2006-09-13 |
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Assignee: Shenzhen ZTE NetView Technology Co., Ltd. Assignor: ZTE Corporation Contract fulfillment period: 2006.1.5 to 2013.1.5 contract change Contract record no.: 2009990000484 Denomination of invention: Remote monitoring data transmission method and implementing device therefor Granted publication date: 20060913 License type: Exclusive license Record date: 2009.5.13 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.1.5 TO 2013.1.5; CHANGE OF CONTRACT Name of requester: SHENZHEN ZHONGXING LIWEI TECHNOLOGY CO., LTD. Effective date: 20090513 |
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