CN1984124A - Multi-path line adapter - Google Patents
Multi-path line adapter Download PDFInfo
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- CN1984124A CN1984124A CN200510022271.8A CN200510022271A CN1984124A CN 1984124 A CN1984124 A CN 1984124A CN 200510022271 A CN200510022271 A CN 200510022271A CN 1984124 A CN1984124 A CN 1984124A
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Abstract
A kind of multiplex circuitry adapter belongs to multi channel hollow tube signal leading connect equipment. Its intelligent control card connects with many channel module cards through CAN bus. The intelligent control card includes CAN transceiver device, electrical level adapter devices, serial devices and so on. The channel module cards includes CAN transceiver device, electrical level adapter devices, communication regulations adapter devices, exterior break service device, synchronous communication baud rate automatic identification equipment and synchronous communication regulation identification equipment. On chassis, there are many external interfaces and socket that matches with intelligent control card and channel module card. The invention achieves radar signal's communication protocol adapter, it supports synchronous signal and asynchronous signal. It also realizes self adapt for standard synchronous communication protocol and communication baud rate. It is a multi-channel, multi-function, multi-interface and intelligent signal leading connect equipment.
Description
One, technical field
The present invention relates to the front end communication system of blank pipe communication system, especially for the data transmit-receive of finishing extraneous most radar data and air traffic control system, the intelligent multichannel data of data traffic control, guarantee Information Security draws the equipment of connecing.
Two, background technology
In the blank pipe field, for a big spatial domain is monitored in real time, grasp the flight plan in whole spatial domain, must use the multi-section radar to cover whole spatial domain, and all radar datas and flight information data are drawn receive command centre, carry out analyzing and processing and monitoring.Radar data is through long Distance Transmission, and concentrated the drawing of multichannel of they being carried out the best in command centre connects and handle, and become an accurate big key issue to aerial target supervision and commander.The blank pipe communication system realizes radar data, ADS data, surveillance radar and directing radar data etc. at interior monitoring data, the reception of flight information, notice to navigator and aviation meteorological data, transmission and exchange, processing, comprehensive, show, monitor and the automation of control.In the transmission of radar data, the employing carrier transmission that has, the employing baseband transmission that has, its link layer data format variation is as High-Level Data Link Control (HDLC), Toshiba two synchronous and Thomson two (BSC), conventional data 2 agreements (CD2), Digital Data Communication Message Protocols (DDCMP) etc. synchronously.For this reason, in an aviation management system, need finish radar data draw connect in, it is adaptive that the radar data of various forms is communicated rules, focuses on so that collect communication processor in real time.
The front end communication subsystem of blank pipe communication system is air traffic control system and the extraneous mouthpiece who communicates by letter, and finishes the data transmit-receive of extraneous and air traffic control system, and the data flow is controlled, and the data fire compartment wall is set, and ensures safety of data.Whole air traffic control system adopts distributed frame, by local area network (LAN) system units such as each messaging device and work station are coupled together, collaborative work, all blank pipe data in the system, as radar/ADS information source, flight information net, navigation/meteorologic information net, technology monitoring network, user's additional facilities etc., all be to draw to connect by the front end communication subsystem to finish.Therefore, such front end communication subsystem has very important effect in whole air traffic control system, in the exchanges data of finishing with external system, data are communicated protocol adaptation and format conversion, provide the information source data of unified internal form, back-up system and flight information net, navigation/meteorologic information net and other outside plant/data switched network swap data.
Three, summary of the invention
The purpose of this invention is to provide a kind of multi-path line adapter, be intended to realize the air traffic control system automation, connect easily, stably the complicated on-the-spot blank pipe data of name kind are drawn.
The technical scheme that realizes the object of the invention is: a kind of multi-path line adapter, comprise cabinet, place an intelligent control unit and a plurality of channel unit in the cabinet, contain the CAN R-T unit that is used as with the channel unit communication in the intelligent control unit, the Transistor-Transistor Logic level of EIA-Rs232C/D standard and the level adapted device of Rs232 level are satisfied in input, with the serial ports R-T unit of communication processor communication, realize the order of communication processor and the command processing device that the CAN order is changed mutually; Contain the CAN R-T unit that is used as with the intelligent control unit communication in the channel unit, the level adapted device, multiple synchronous radar data is transformed to the communication regulations adaptive device that unified asynchronous radar data send communication processor, and by gathering, sending synchronous bit stream is gathered and the distant external interrupt service unit that goes out synchronous radar data, it is characterized in that described cabinet is provided with a plurality of external interfaces; Described intelligent control unit is an intelligent control card, and channel unit is the channel module card, the two respectively with cabinet on socket be complementary, and intelligent control card is through a CAN bus and channel module card connection; Also have in the channel module card
Synchronous communication baud rate automatic identification equipment: the rising edge at the synchronised clock of passage adds 1 to clock counter CLKcnt, being 3 seconds in cycle, the numerical value that calculates the clock counter of per second is baud rate BaudRate, BaudRate and these several baud rates of 2400/4800/9600/19200/38400/64000bps are compared, adopt and judge that near method drawing this passage believes baud rate; Also have
The journey automatic identification equipment is received in synchronous communication: during program start, synchronous bit stream on the circuit is moved into shift register WordReg by turn, and differentiate its value, if the value of WordReg is 0xFFFF, so just the BSC counter is increased 1, otherwise, judge whether the value of WordReg is 0x7E7E, if 0x7E7E, so just the HDLC counter is increased 1, otherwise, judge whether the value of WordReg is 0xFFCO, if 0xFFCO, so just the CD2 counter is increased 1, otherwise, judge whether the value of WordReg is 0x9696, if 0x9696, so just the DDCMP counter is increased 1, if be not these values, judge whether the timing statistics of this program has arrived, if do not arrive timing statistics, so just move into a bit synchronization bit again, and the above judgement flow process of circulation, if timing statistics arrives, withdraw from this loop body, the value of statistical analysis individual count device, according to the maximum likelihood statistical rules, just can determine the synchronous communication rules on this circuit, and withdraw from this program.
Draw in the blank pipe data and to connect, can adopt high performance digital signal processor is core cell, to various complicated blank pipe data carry out preliminary treatment, communication control procedure is adaptive; Separate between each passage, be independent of each other, each channel function all can adopt digital signal processor to realize that the entire front end system is exactly a multicomputer system, certain passage can not influence other passage operate as normal unusually.In intellectuality, this subsystem adopts control centre's module and CAN bussing technique that all channel modules and power supply are carried out automatic management, and report to whole air traffic control system, and gather the various work state informations of each passage and power supply in real time, send various control commands in real time; Whole system solution integration degree height, stability height, rational in infrastructure.
This invention advantage technically is, utilizes the programming flexibility of universal cpu, can draw to connect and the various form blank pipe of preliminary treatment data, as asynchronous data, synchrodata (HDLC, BSC, CD2 or the like); Adopt many CPU mode of operation, strengthened the stability of whole air traffic control system; This product has passed through system-level examination, and factory level is checked and accepted, and on probation, long-term continuous operation reaches 3 months and occurs unusually.Utilize the front terminal system of this invention as air traffic control system, realized the automation air control, improved the flight efficiency in spatial domain, the flight that can fast grasp national spatial domain in real time is dynamic.
Four, description of drawings
Accompanying drawing 1 is the whole theory diagram of this invention.
Accompanying drawing 2 is the realization block diagram of the channel module card of this invention.
Accompanying drawing 3 is the synchronous communication rules automatic recognition software flow chart of this invention.
Accompanying drawing 4 is the software flow pattern that the synchronous communication baud rate of this invention is discerned automatically.
Accompanying drawing 5 is the realization block diagram of the intelligent control card of this invention.
Accompanying drawing 6 is the external interface distribution map of this invention.
Five, embodiment
The specific implementation of technical solution of the present invention is divided into: global design; Channel module; Intelligent control card and external interface.Be described in further detail below in conjunction with accompanying drawing.
1. global design
This invention product on the whole, 19 inches of employing standard are wide, the cabinet design that 4U is high, each channel module card (channel unit) adopts card insert type to connect, intelligent control card (intelligent control unit) utilizes the CAN bussing technique to monitor each channel card, the channel module card all adopts Europlug to link to each other with backboard with intelligent control card, adopts duplicate supply card (being connected on the CAN bus) Hot Spare that channel module card and intelligent control card on the backboard are powered, and improves the stability of a system.As shown in Figure 1.
2. channel module card
The specific implementation of channel module card as shown in Figure 2.
Each channel module design is identical, is convenient to exchange and safeguards.Connect for the radar data that can satisfy some high transmission rates (as 64Kbps) draws, channel module has adopted the DSP of the company's T MS320LF2407A of a Texas Instrument (TI) type as acp chip, comes the radar data of adaptive various forms fast.TMS320LF2407A is a kind of fixed-point DSP chip under the TMS320C2000 platform, and this DSP indoor design has the FLASH of WatchDog Timer, 32K word and the RAM of 2.5K word, includes the CAN communication module simultaneously, meets the CAN2.0 code requirement.
Owing to adopted integrated level height, TMS320LF2407A chip that function is strong, the hardware configuration of channel module is simplified greatly, only need dispose a small amount of peripheral components, as a slice CAN R-T unit of finishing with the intelligent control card communication (is the CAN transceiver: TJA1050); Make the input and output of system satisfy the Transistor-Transistor Logic level of EIA-RS232C/D standard and the level adapted device of RS232 (being the level adapted device) etc.The major function of channel module realizes by each functional software of writing DSP, reads configuration information and channel module is configured to function corresponding as the program module that improves on-the-spot adaptive capacity; CAN transmission-receiving function module can communicate with one another channel module and intelligent control card by the CAN bus; To go out synchronous radar data in order gathering, to have designed external interrupt service unit (being the external interrupt service routine), realized collection sync bit (bit) stream and sent the function of sync bit (bit) stream with distant; Adaptive for the sync bit stream of gathering being carried out various rules, designed communication regulations adaptive device (being radar data process software module), send communication processor with various synchronous radar data conversion process for unified asynchronous radar data, communication processor only need be handled same type radar data; In order to guarantee that asynchronous radar data can give backstage RDP (radar data processing module) and handle, designed asynchronous serial port R-T unit (being the asynchronous serial port transmitting/receiving program); For each operating state of acquisition channel module, designed real-time detection module simultaneously; House dog trigger equipment (being the house dog software module) regularly triggers WatchDog Timer in major cycle, prevent that the channel module program from crashing the antijamming capability of enhanced system.Therefore, only a slice dsp chip is carried out all functions that appropriate program development just can realize channel module.Each program module mainly adopts the C language compilation, and modularized design is convenient to safeguard.The 30.6KB program that compiling connects can directly be cured to DSP inside, and need not to extend out RAM and ROM.
The software innovation point of channel module card mainly comprises synchronous communication baud rate automatic identification equipment and synchronous communication rules automatic identification equipment (the two is realized by software).The software flow pattern of synchronous communication baud rate automatic identification equipment as shown in Figure 3, because the baud rate of synchronous communication is defined as fixing several baud rates (as 2400/4800/9600/19200/38400/64000bps etc.) channel module the clock signal of synchronous communication is added up its counting rate, just adopt the best communication baud rate that obtains this passage near criterion.Rising edge at the synchronised clock of passage adds 1 to clock counter CLKcnt, being 3 seconds in cycle, the numerical value that calculates the clock counter of per second is baud rate BaudRate, BaudRate and these several baud rates of 2400/4800/9600/19200/38400/64000bps are compared, adopt and judge that near method drawing this passage believes baud rate; The software flow pattern of synchronous communication rules automatic identification equipment as shown in Figure 4, channel module carries out real-time statistic analysis to the sync bit stream of gathering, according to communication control procedure (as HDLC, BSC, CD2, DDCMP etc.) free word and synchronous head can identify the communication control procedure of this passage.Therefore this invention can self adaptation be drawn the passage of standard synchronous communication and connect various signals.During program start, synchronous bit stream on the circuit is moved into shift register WordReg by turn, and differentiate its value, if the value of WordReg is 0xFFFF, so just the BSC counter is increased 1, otherwise, judge whether the value of WordReg is 0x7E7E, if 0x7E7E, so just the HDLC counter is increased 1, otherwise, judge whether the value of WordReg is 0xFFCO, if 0xFFCO, so just the CD2 counter is increased 1, otherwise, judge whether the value of WordReg is 0x9696, if 0x9696, so just the DDCMP counter is increased 1, if be not these values, judge whether the timing statistics of this program has arrived, if do not arrive timing statistics, so just move into a bit synchronization bit again, and the above judgement flow process of circulation, if timing statistics arrives, withdraw from this loop body, the value of statistical analysis individual count device, according to the maximum likelihood statistical rules, just can determine the synchronous communication rules on this circuit, and withdraw from this program.
3, intelligent control card
The specific implementation of intelligent control card as shown in Figure 5.
Intelligent control card is except that adopting a slice TMS320LF2407A type DSP as the key control unit, its peripheral circuit is also very simple, only need a slice serial ports expansion chip ST16C550 of configuration and the communication of dual communication processor, a slice realizes the CAN R-T unit (being the CAN transceiver) of communication between intelligent control card and the channel module card, and level adapted device (being the level adapted circuit) and status display circuit etc.
Channel module refreshes its operating state in real time.Intelligent control card is the state of each channel module of timing searching, power module and input-output line also, and regularly upload monitor message to up-computer demonstration or processing, the operating state of drawing welding system and critical process can be handled on total system and visual in real time, greatly improved system-wide reliability and intellectuality.Intelligent control card real-time data acquisition, processing and the remote control realization of function such as issue an order depends on program development to dsp chip.Use each functional module of C language compilation,, realize the communication of MCM and DTM as the transceiver module of CAN; 2. two serial ports R-T units (promptly two serial ports transmitting/receiving program module) are realized and dual communication processor communication (being generally the serial ports R-T unit with single communication processor communication); Command processing device (being command processing module) is realized the order of communication processor and the mutual conversion of CAN order; And timing checkout gear (being time block), detect power supply status in real time and transmit the state etc. that manually is provided with.
4, external interface
The external interface of this invention is realized as shown in Figure 6.
This product has adopted coupling box (being positioned at the cabinet rear portion) structural design with the interface of outside, its coupling box kind of interface is more complete, coupling box is provided with blank pipe dual system interface (air traffic control system 1 interface 6,7, air traffic control system 2 interfaces 8,9), external digital communication interface 2, external analog communication interface 1, monitor-interface 4, subtending port 3, radar recording interface, two redundant system interfaces and adaptor interface 5 etc. can adapt to the field requirement of various complexity.The interface of this invention product can draw and connects digital signal (radar etc.), also can draw to connect analog signal.Realized that selecting of dual radars is excellent, radar data is transmitted.For safe and reliable, this invention provides signals such as radar for dual system.In order to adapt to on-the-spot radar kind and radar way, this invention can be adopted the adapter of the synthetic major path number of cascaded series.Monitor-interface offers this adapter of system monitoring, has realized the intellectuality of adapter.
The present invention is that a kind of multichannel, multi-functional, many interfaces, intelligentized air-control signal draw the equipment of connecing.Multichannel is, this invention can be carried out equipment cascading and come the more scene of supporting signal passage, each passage independent parallel work, and certain passage breaks down can not influence other passage work; Multi-functionally be, this invention both can have been drawn and connect radar signal, the spread of the rumours input port the spread of the rumours output radar signal, realized that also the radar signal binary channels selects excellent forwarding output, this invention has realized that also many communication control procedures of radar signal are adaptive, support synchronous signal (HDLC, BiSync and CD2) and asynchronous signal, and the channel module that should invent can be realized self adaptation to the communication control procedure and the communication baud rate of standard synchronous communication; Many interfaces are that this invention has realized analog communication interface, Interface for digital communication, two redundant system interface, monitor-interface and confession third party device (as recorder) interface; Intellectuality is, this invention has realized an intelligent control card, can signal type, communication baud rate, signal on off operating mode and the duplicate supply operating state of each passage be detected in real time, select excellent forwarding to control in real time signal switching, the binary channels radar signal of two redundant systems.
Claims (10)
1, a kind of multi-path line adapter, comprise cabinet, place an intelligent control unit and a plurality of channel unit in the cabinet, contain the CAN R-T unit that is used as with the channel unit communication in the intelligent control unit, the Transistor-Transistor Logic level of EIA-Rs232C/D standard and the level adapted device of Rs232 level are satisfied in input, with the serial ports R-T unit of communication processor communication, realize the order of communication processor and the command processing device that the CAN order is changed mutually; Contain the CAN R-T unit that is used as with the intelligent control unit communication in the channel unit, the level adapted device, multiple synchronous radar data is transformed to the communication regulations adaptive device that unified asynchronous radar data send communication processor, and by gathering, sending synchronous bit stream is gathered and the distant external interrupt service unit that goes out synchronous radar data, it is characterized in that described cabinet is provided with a plurality of external interfaces; Described intelligent control unit is an intelligent control card, and channel unit is the channel module card, the two respectively with cabinet on socket be complementary, and intelligent control card is through a CAN bus and channel module card connection; Also have in the channel module card
Synchronous communication baud rate automatic identification equipment: the rising edge at the synchronised clock of passage adds 1 to clock counter CLKcnt, being 3 seconds in cycle, the numerical value that calculates the clock counter of per second is baud rate BaudRate, BaudRate and these several baud rates of 2400/4800/9600/19200/38400/64000bps are compared, adopt and judge that near method drawing this passage believes baud rate; Also have
The journey automatic identification equipment is received in synchronous communication: during program start, synchronous bit stream on the circuit is moved into shift register WordReg by turn, and differentiate its value, if the value of WordReg is 0xFFFF, so just the BSC counter is increased 1, otherwise, judge whether the value of WordReg is 0x7E7E, if 0x7E7E, so just the HDLC counter is increased 1, otherwise, judge whether the value of WordReg is 0xFFC0, if 0xFFC0, so just the CD2 counter is increased 1, otherwise, judge whether the value of WordReg is 0x9696, if 0x9696, so just the DDCMP counter is increased 1, if be not these values, judge whether the timing statistics of this program has arrived, if do not arrive timing statistics, so just move into a bit synchronization bit again, and the above judgement flow process of circulation, if timing statistics arrives, withdraw from this loop body, the value of statistical analysis individual count device, according to the maximum likelihood statistical rules, just can determine the synchronous communication rules on this circuit, and withdraw from this program.
2, adapter according to claim 1 is characterized in that, also is provided with in the described intelligent control card as regularly detecting power supply status and transmitting the timing checkout gear that state manually is set.
3, adapter according to claim 2 is characterized in that, also is provided with status display circuit in the described intelligent control card.
4, adapter according to claim 3 is characterized in that, the serial ports R-T unit in the described intelligent control card is the two serial ports R-T units with two communication processor communications.
5, adapter according to claim 4 is characterized in that, also has the asynchronous serial port R-T unit of asynchronous radar data being given the radar data processing unit with serial mode in the described intelligent channel module card; And in major cycle, regularly trigger WatchDog Timer, prevent the house dog trigger equipment that the channel module program crashes.
6, adapter according to claim 5 is characterized in that, described channel module card is 10, all adopts the TMS320LF2407A chip; Described intelligent control card adopts the TMS320LF2407A chip; Described socket is an Europlug.
7, adapter according to claim 6 is characterized in that, the rear portion also is provided with coupling box in the described cabinet, and coupling box is provided with blank pipe dual system interface, external digital communication interface, external analog communication interface.
8, adapter according to claim 7 is characterized in that, also is provided with monitor-interface on the described coupling box, subtending port, radar recording interface.
9, adapter according to claim 8 is characterized in that, described cabinet is 19 inches wide, that 4U is high cabinets.
10, according to the described adapter of the arbitrary claim of claim 1-9, it is characterized in that, also be connected with the duplicate supply card in the described cabinet on the CAN bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100222718A CN100525286C (en) | 2005-12-13 | 2005-12-13 | Multi-path line adapter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100222718A CN100525286C (en) | 2005-12-13 | 2005-12-13 | Multi-path line adapter |
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| CN1984124A true CN1984124A (en) | 2007-06-20 |
| CN100525286C CN100525286C (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100222718A Expired - Fee Related CN100525286C (en) | 2005-12-13 | 2005-12-13 | Multi-path line adapter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269289A (en) * | 2013-04-17 | 2013-08-28 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Air traffic control radar information test method and equipment |
| CN103777576A (en) * | 2012-10-18 | 2014-05-07 | 重庆工业自动化仪表研究所 | Adaptive CAN Bus baud rate converter |
| CN111412580A (en) * | 2020-03-30 | 2020-07-14 | 美的集团股份有限公司 | Baud rate calibration method, air conditioner and computer readable storage medium |
| CN111565138A (en) * | 2019-02-13 | 2020-08-21 | 厦门雅迅网络股份有限公司 | CAN bus baud rate self-adaption method based on dual systems and storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951351A (en) * | 2010-09-21 | 2011-01-19 | 中国北车股份有限公司大连电力牵引研发中心 | HDLC-CAN (High-level Data Link Control-Controller Area Network) gateway equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4407014A (en) * | 1980-10-06 | 1983-09-27 | Honeywell Information Systems Inc. | Communications subsystem having a direct connect clock |
| US4598360A (en) * | 1982-04-27 | 1986-07-01 | Burroughs Corporation | Read control operations system for a multiple line adapter organization |
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2005
- 2005-12-13 CN CNB2005100222718A patent/CN100525286C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777576A (en) * | 2012-10-18 | 2014-05-07 | 重庆工业自动化仪表研究所 | Adaptive CAN Bus baud rate converter |
| CN103777576B (en) * | 2012-10-18 | 2016-09-07 | 重庆工业自动化仪表研究所 | Adaptive CAN Bus baud rate converter |
| CN103269289A (en) * | 2013-04-17 | 2013-08-28 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Air traffic control radar information test method and equipment |
| CN103269289B (en) * | 2013-04-17 | 2016-03-16 | 中国人民解放军空军装备研究院雷达与电子对抗研究所 | Air traffic control radar information test method and equipment |
| CN111565138A (en) * | 2019-02-13 | 2020-08-21 | 厦门雅迅网络股份有限公司 | CAN bus baud rate self-adaption method based on dual systems and storage medium |
| CN111565138B (en) * | 2019-02-13 | 2023-03-14 | 厦门雅迅网络股份有限公司 | CAN bus baud rate self-adaption method based on dual systems and storage medium |
| CN111412580A (en) * | 2020-03-30 | 2020-07-14 | 美的集团股份有限公司 | Baud rate calibration method, air conditioner and computer readable storage medium |
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| CN100525286C (en) | 2009-08-05 |
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