CN104967482A - Multichannel IO synchronization control system based on optical fiber communication and method - Google Patents
Multichannel IO synchronization control system based on optical fiber communication and method Download PDFInfo
- Publication number
- CN104967482A CN104967482A CN201510415202.7A CN201510415202A CN104967482A CN 104967482 A CN104967482 A CN 104967482A CN 201510415202 A CN201510415202 A CN 201510415202A CN 104967482 A CN104967482 A CN 104967482A
- Authority
- CN
- China
- Prior art keywords
- control
- module
- time interval
- packet
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Optical Communication System (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention relates to the industrial control field and provides a multichannel IO synchronization control system based on optical fiber communication and a method. By using a current IO synchronization control system, synchronization precision is not high and an anti-interference capability is poor. By using the system and the method in the invention, the above problems are solved. The system comprises a distribution module, a PC and an IO control module. By using the technical scheme provided in the invention, an synchronization error is reduced and an anti-interference capability is high.
Description
Technical field
The present invention relates to industrial control field, particularly a kind of multichannel IO synchronous control system based on optical fiber communication and method.
Background technology
In Radar Signal Processing, the field such as image procossing and mobile communication, complete the collection of any one signal, process, store, control and playback, all need the transfer of data of carrying out between multiple system or equipment being correlated with, exchange, operation such as synchronous grade, at present, general employing PLC control system realizes IO Synchronization Control, but when adopting PLC control system to carry out IO Synchronization Control, the precision of IO Synchronization Control is not high, and at industrial circle, control system generally can be subject to space radiation, outer lead, the interference of inner these three kinds of signals of electromagnetism, because PLC synchronous control system is generally connected by shielded type cable, therefore bad to the shield effectiveness of electromagnetic radiation, antijamming capability is more weak.
Summary of the invention
[technical problem that will solve]
The object of this invention is to provide a kind of multichannel IO synchronous control system based on optical fiber communication and method, to solve in industrial circle, the current problem that IO synchronous control system synchronization accuracy is not high and antijamming capability is more weak.
[technical scheme]
The present invention is achieved by the following technical solutions.
First the present invention relates to a kind of multichannel IO synchronous control system based on optical fiber communication, and comprise control end, distribution module and at least one IO control module, described control end and distribution module communicate to connect,
Described distribution module comprises the first FPGA unit and at least one first fiber port, described first fiber port is connected with the first FPGA unit, and it comprises for the first optical fiber receiver-transmitter module of synchronizing clock signals output and the second optical fiber receiver-transmitter module for data transmit-receive;
Described IO control module comprises the second FPGA unit, data-interface, the second fiber port, described data-interface, the second fiber port are all connected with the second FPGA unit, and described second fiber port comprises for the 3rd optical fiber receiver-transmitter module of synchronizing clock signals reception and the 4th optical fiber receiver-transmitter module for data transmit-receive;
First optical fiber receiver-transmitter module of described first fiber port and the 3rd optical fiber receiver-transmitter module of the second fiber port are by the first Fiber connection, and the second optical fiber receiver-transmitter module of described first fiber port and the 4th optical fiber receiver-transmitter module of the second fiber port are by the second Fiber connection.
As one preferred embodiment, the first FPGA unit of described distribution module comprises synchronised clock subelement and data retransmission subelement,
Described synchronised clock subelement is configured to: generate synchronizing clock signals and this synchronizing clock signals is sent to IO control module,
Described data retransmission subelement is configured to: receive the packet that control end sends, according to the port numbers in packet, this packet is forwarded to the IO control module of the first fiber port connection corresponding with port numbers, described packet at least comprises port numbers, time interval information and IO control information;
Receive time interval information and IO control information that IO control module sends and the port numbers of the time interval information received and IO control information and the first fiber port of receiving this time interval information and IO control information is forwarded to control end.
As another preferred embodiment, described IO control module also comprises the memory cell be connected with the second FPGA unit, and described second FPGA unit is configured to:
The state of image data interface obtains IO control information and keeps the time of this IO control information, the IO control information collected and time interval information is sent to after the IO control information collected and time interval information are maybe saved to memory cell by distribution module and again the IO control information collected and time interval information is sent to distribution module;
Receive packet and the synchronizing clock signals of distribution module forwarding, take synchronizing clock signals as clock reference, according to the time interval information of packet and the state of the IO control information setting data interface according to packet, or after data are saved to memory cell, take synchronizing clock signals as clock reference, the state of the IO control information setting data interface successively according to the time interval information of packet and according to packet.
As another preferred embodiment, described second FPGA unit also comprises the cell fifo be connected with memory cell, described IO control module is also configured to: during from memory cell acquisition time interval information and IO control information, and the time interval information got and IO control information are saved to cell fifo.
As another preferred embodiment, described data-interface comprises the multiplexing TTL interface of input and output, TTL drive circuit, and described TTL drive circuit is connected with TTL interface and the second FPGA unit respectively.
As another preferred embodiment, described distribution module is provided with the RJ45 interface be connected with the first FPGA unit, and described control end is connected by RJ45 interface with the first FPGA unit of distribution module.
As another preferred embodiment, described distribution module also comprises RS422 interface and/or GPIO interface, and described RS422 interface and/or GPIO interface are all connected with the first FPGA unit.
As another preferred embodiment, described control end is PC, and described memory cell is DDR2 memory cell.
The invention still further relates to a kind of multichannel IO synchronisation control means based on optical fiber communication, comprise data distributing flow process and data upload flow process,
Described data distributing flow process comprises:
Control end sends packet to distribution module, at least comprises port numbers, time interval information, IO control information in described packet;
Distribution module receives the packet that control end sends, generate synchronizing clock signals, and synchronizing clock signals is sent to IO control module by the first optical fiber receiver-transmitter module of the first fiber port corresponding with port numbers, and the packet received is sent to IO control module by the second optical fiber receiver-transmitter module of the first fiber port corresponding with port numbers; IO control module receives packet and the synchronizing clock signals of distribution module transmission, take synchronizing clock signals as clock reference, the state of the IO control information setting data interface successively according to the time interval information of packet and according to packet, or after the IO control information of preserving in packet and time interval information, take synchronizing clock signals as clock reference, the state of the IO control information setting data interface successively according to the time interval information of packet and according to packet
Described data upload flow process comprises:
The state of IO control module image data interface obtains IO control information and keeps the time of this IO control information, the IO control information collected and time interval information is sent to after the IO control information collected and time interval information are maybe saved to memory cell by distribution module by the 4th optical fiber receiver-transmitter module of the second fiber port and again the IO control information collected and time interval information is sent to distribution module by the 4th optical fiber receiver-transmitter module of the second fiber port;
Distribution module receives IO control information and time interval information that IO control module sends and the port numbers of the IO control information received, time interval information and the first fiber port of receiving this IO control information is forwarded to control end.
As one preferred embodiment, also comprise: when IO control module is from memory cell acquisition time interval information and IO control information, the time interval information got and IO control information are saved to cell fifo.
[beneficial effect]
The technical scheme that the present invention proposes has following beneficial effect:
(1), in IO synchronous control system provided by the invention, distribution module and IO control module are by Fiber connection, and speed is fast, antijamming capability is strong.
(2) the present invention utilizes distribution module to carry out Data dissemination, and distribution module, IO control module the port design that all adopts data and synchronised clock to be separated, reduce synchronous error.
Accompanying drawing explanation
The structured flowchart of the multichannel IO synchronous control system based on optical fiber communication that Fig. 1 provides for embodiments of the invention one.
The structured flowchart of the distribution module that Fig. 2 provides for embodiments of the invention one.
The structured flowchart of the IO control module that Fig. 3 provides for embodiments of the invention one.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, clear, complete description is carried out to the specific embodiment of the present invention, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiment, neither limitation of the present invention.Based on embodiments of the invention, those of ordinary skill in the art, not paying the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
Embodiment one
Embodiment one provides a kind of multichannel IO synchronous control system based on optical fiber communication, and as shown in Figure 1, this system comprises distribution module 1, PC 3 and IO control module 2, is described in detail respectively below to the modules of composition system.
As shown in Figure 2, distribution module 1 comprises FPGA unit 11, RJ45 interface 12, RS422 interface 13, GPIO interface 14, RAM memory 16 and 32 fiber ports, and RJ45 interface 12, RS422 interface 13, GPIO interface 14, RAM memory 16 are all connected with FPGA unit 11 with 32 fiber ports.32 fiber ports have identical circuit principle structure, be described for fiber port 15, fiber port 15 comprises for the optical fiber receiver-transmitter module of synchronizing clock signals output and the optical fiber receiver-transmitter module for data transmit-receive, particularly, the optical fiber receiver-transmitter module exported for synchronizing clock signals adopts 155MbpsLVPECL level single fiber bi-directional photoelectricity receiver-transmitter integrated module, the fiber optical transceiver that optical fiber receiver-transmitter module for data transmit-receive adopts Avago to produce, transmission speed is 3.125Gb/s, for realizing the transmission-receiving function of data.RJ45 interface 12 for PC 3 network service, RS422 interface 13 is synchronous with other system for whole control system, and GPIO interface 14 is for the input of external played/collection enable signal.
As shown in Figure 3, IO control module 2 comprises FPGA unit 21, data-interface, fiber port 22, DDR2 memory cell 23, cell fifo, data-interface, fiber port 22, DDR2 memory cell 23 are all connected with FPGA unit 21, particularly, data-interface comprises the multiplexing TTL interface 24 of input and output, TTL drive circuit 25, TTL drive circuit 25 is connected with TTL interface 24 and FPGA unit 21 respectively, and in the present embodiment, TTL interface 24 is the Transistor-Transistor Logic level input/output interface of 160.Fiber port 22 is identical with the circuit theory of fiber port 15, it comprises for the optical fiber receiver-transmitter module of synchronizing clock signals reception and the optical fiber receiver-transmitter module for data transmit-receive, particularly, the optical fiber receiver-transmitter module received for synchronizing clock signals adopts 155Mbps LVPECL level single fiber bi-directional photoelectricity receiver-transmitter integrated module, the fiber optical transceiver that optical fiber receiver-transmitter module for data transmit-receive adopts Avago to produce, transmission speed is 3.125Gb/s, for realizing the transmission-receiving function of data.DDR2 memory cell 23 capacity is 2Gb, for the data that store download or the data collected.Distribution module 1 due to the present embodiment has 32 fiber ports, and therefore maximum support 32 IO control modules are connected with it.
Distribution module 1 and each IO control module pass through Fiber connection.Particularly, to be connected with the fiber port 15 of distribution module 1 for IO control module 2 and to be described, the optical fiber receiver-transmitter module received for synchronizing clock signals of the optical fiber receiver-transmitter module and the fiber port 22 that export for synchronizing clock signals of fiber port 15 passes through Fiber connection at a slow speed, being connected by fast fibre with the optical fiber receiver-transmitter module for data transmit-receive of fiber port 22 for the optical fiber receiver-transmitter module of data transmit-receive of fiber port 15.
In the present embodiment, the FPGA unit 11 of distribution module 1 comprises synchronised clock subelement, data retransmission subelement.
Synchronised clock subelement is configured to: generate synchronizing clock signals and this synchronizing clock signals is sent to IO control module 2.
Data retransmission subelement is configured to: receive the packet that PC 3 sends, according to the port numbers in packet, this packet is forwarded to the IO control module of the fiber port connection corresponding with port numbers, packet comprises port numbers, time interval information and IO control information, and port numbers here refers to the numbering of the fiber port of distribution module 1; Receive IO control information and time interval information that IO control module sends and the port numbers of the IO control information received, time interval information and the fiber port that receives this IO control information is forwarded to PC 3.Need to illustrate, the time interval here refers to the time span that data-interface keeps current I O control information.
In the present embodiment, IO control module is also configured to: during from memory cell acquisition time interval information and IO control information, and the time interval information got and IO control information are saved to cell fifo.
In the present embodiment, FPGA unit 21 is configured to:
The state gathering TTL interface 24 obtains the time span that IO control information and TTL interface 24 keep current I O control information, this time span is time interval information, the IO control information collected and time interval information is packaged into Packet Generation and again the IO control information collected and time interval information is sent to distribution module 1 after the IO control information collected and time interval information are maybe saved to DDR2 memory cell 23 by distribution module 1;
Receive packet and the synchronizing clock signals of distribution module 1 transmission, take synchronizing clock signals as clock reference, according to the IO control information of packet and the state of time interval information setting TTL interface 24, or after preserving the IO control information in packet, take synchronizing clock signals as clock reference, according to the IO control information of packet and the state of time interval information setting TTL interface 24.
Adopting the system that provides of embodiment one to realize the method for multichannel IO Synchronization Control can with reference to following concrete grammar embodiment.
Embodiment two
Embodiment two provides a kind of multichannel IO synchronisation control means based on optical fiber communication, and the method adopts the system in embodiment one to realize, and this system being operable is at high speed processing pattern and real-time tupe.
(1) high speed processing pattern
Under high speed processing pattern, this IO synchronisation control means comprises data distributing flow process and data upload flow process, is described below for the Synchronization Control of IO control module 2 with distribution module 1.
(1) data distributing flow process
Data distributing flow process comprises:
PC 3 sends packet to distribution module 1, and comprise the IO control information of frame head, packet number, port numbers, the time interval and 160 in packet, in the present embodiment, port numbers is the port numbers of the fiber port be connected with IO control module 2 in distribution module;
Distribution module 1 receives the packet that PC 3 sends, generate synchronizing clock signals, synchronizing clock signals is sent to IO control module 2 by optical fiber at a slow speed, and the packet received is sent to IO control module 2 by fast fibre, particularly, synchronizing clock signals is sent to IO control module by the optical fiber receiver-transmitter module of the fiber port corresponding with port numbers, and the packet received is sent to IO control module by the optical fiber receiver-transmitter module of the fiber port corresponding with port numbers;
IO control module 2 receives packet and the synchronizing clock signals of distribution module 1 transmission, preserve the IO control information in packet and time interval information, take synchronizing clock signals as clock reference, according to the IO control information of packet and the state of time interval information setting TTL interface 24, it should be noted that, time interval information is exactly the time of the state keeping current TTL interface 24, when time interval in retention time overtime interval information, by the state of next group IO control information setting TTL interface 24.Particularly, after packet stores by IO control module 2, can be play by PC 3 pairs of TTL interfaces 24, also can by the broadcasting of equipment control TTL interface 24 be connected with GPIO interface 14.
(2) data upload flow process
Data upload flow process comprises:
160 Transistor-Transistor Logic level states that IO control module 2 gathers TTL interface 24 obtain IO control information, after the retention time of the IO control information collected and current I O control information is saved to DDR2 memory cell 23, again by the IO control information collected be sent to distribution module 1, the retention time of current I O control information is time interval information;
Distribution module receives the IO control information and time interval information that IO control module sends, and the port numbers of the IO control information received, time interval information and correspondence is forwarded to control end.
(2) real-time tupe
Under real-time tupe, this IO synchronisation control means comprises data distributing flow process and data upload flow process equally, is described below for the Synchronization Control of IO control module 2 with distribution module 1.
(1) data distributing flow process
Data distributing flow process comprises:
PC 3 sends packet to distribution module 1, comprises frame head in packet, packet number, port numbers, the IO control information of time interval information and 160;
Distribution module 1 receives the packet that PC 3 sends, and generates synchronizing clock signals, synchronizing clock signals is sent to IO control module 2 by optical fiber at a slow speed, and the packet received is sent to IO control module 2 by fast fibre;
IO control module 2 receives packet and the synchronizing clock signals of distribution module 1 forwarding, take synchronizing clock signals as clock reference, according to the IO control information of packet and the state of time interval information setting TTL interface 24.Particularly, after IO control module 2 receives packet, directly TTL interface 24 is play.
(2) data upload flow process
Data upload flow process comprises:
160 Transistor-Transistor Logic level states that IO control module 2 gathers TTL interface 24 obtain IO control information and time interval information, and the IO control information collected and time interval information are sent to distribution module 1;
Distribution module 1 receives IO control information that IO control module 2 sends and the port numbers of the IO control information received, time interval information and correspondence is forwarded to PC 3.
As can be seen from the above embodiments, in the IO synchronous control system that the embodiment of the present invention provides, distribution module and IO control module are by Fiber connection, and speed is fast, antijamming capability is strong; In addition, the embodiment of the present invention utilizes distribution module to carry out Data dissemination, the design that the port of distribution module, IO control module all adopts data and synchronised clock to be separated, and reduces synchronous error.
Claims (10)
1., based on a multichannel IO synchronous control system for optical fiber communication, it is characterized in that comprising control end, distribution module and at least one IO control module, described control end and distribution module communicate to connect,
Described distribution module comprises the first FPGA unit and at least one first fiber port, described first fiber port is connected with the first FPGA unit, and it comprises for the first optical fiber receiver-transmitter module of synchronizing clock signals output and the second optical fiber receiver-transmitter module for data transmit-receive;
Described IO control module comprises the second FPGA unit, data-interface, the second fiber port, described data-interface, the second fiber port are all connected with the second FPGA unit, and described second fiber port comprises for the 3rd optical fiber receiver-transmitter module of synchronizing clock signals reception and the 4th optical fiber receiver-transmitter module for data transmit-receive;
First optical fiber receiver-transmitter module of described first fiber port and the 3rd optical fiber receiver-transmitter module of the second fiber port are by the first Fiber connection, and the second optical fiber receiver-transmitter module of described first fiber port and the 4th optical fiber receiver-transmitter module of the second fiber port are by the second Fiber connection.
2. the multichannel IO synchronous control system based on optical fiber communication according to claim 1, is characterized in that the first FPGA unit of described distribution module comprises synchronised clock subelement and data retransmission subelement,
Described synchronised clock subelement is configured to: generate synchronizing clock signals and this synchronizing clock signals is sent to IO control module,
Described data retransmission subelement is configured to: receive the packet that control end sends, according to the port numbers in packet, this packet is forwarded to the IO control module of the first fiber port connection corresponding with port numbers, described packet at least comprises port numbers, time interval information and IO control information;
Receive time interval information and IO control information that IO control module sends and the port numbers of the time interval information received and IO control information and the first fiber port of receiving this time interval information and IO control information is forwarded to control end.
3. the multichannel IO synchronous control system based on optical fiber communication according to claim 2, it is characterized in that described IO control module also comprises the memory cell be connected with the second FPGA unit, described second FPGA unit is configured to:
The state of image data interface obtains IO control information and keeps the time of this IO control information, the IO control information collected and time interval information is sent to after the IO control information collected and time interval information are maybe saved to memory cell by distribution module and again the IO control information collected and time interval information is sent to distribution module;
Receive packet and the synchronizing clock signals of distribution module forwarding, take synchronizing clock signals as clock reference, according to the time interval information of packet and the state of the IO control information setting data interface according to packet, or after data are saved to memory cell, take synchronizing clock signals as clock reference, the state of the IO control information setting data interface successively according to the time interval information of packet and according to packet.
4. the multichannel IO synchronous control system based on optical fiber communication according to claim 3, it is characterized in that described second FPGA unit also comprises the cell fifo be connected with memory cell, described IO control module is also configured to: during from memory cell acquisition time interval information and IO control information, and the time interval information got and IO control information are saved to cell fifo.
5. the multichannel IO synchronous control system based on optical fiber communication according to claim 1, it is characterized in that described data-interface comprises the multiplexing TTL interface of input and output, TTL drive circuit, described TTL drive circuit is connected with TTL interface and the second FPGA unit respectively.
6. according to the described multichannel IO synchronous control system based on optical fiber communication arbitrary in claim 1 to 5, it is characterized in that described distribution module is provided with the RJ45 interface be connected with the first FPGA unit, described control end is connected by RJ45 interface with the first FPGA unit of distribution module.
7. according to the described multichannel IO synchronous control system based on optical fiber communication arbitrary in claim 1 to 5, it is characterized in that described distribution module also comprises RS422 interface and/or GPIO interface, described RS422 interface and/or GPIO interface are all connected with the first FPGA unit.
8., according to the described multichannel IO synchronous control system based on optical fiber communication arbitrary in claim 1 to 5, it is characterized in that described control end is PC, described memory cell is DDR2 memory cell.
9. adopt the multichannel IO synchronisation control means that in claim 1 to 8, arbitrary described system realizes, it is characterized in that comprising data distributing flow process and data upload flow process,
Described data distributing flow process comprises:
Control end sends packet to distribution module, at least comprises port numbers, time interval information, IO control information in described packet;
Distribution module receives the packet that control end sends, generate synchronizing clock signals, and synchronizing clock signals is sent to IO control module by the first optical fiber receiver-transmitter module of the first fiber port corresponding with port numbers, and the packet received is sent to IO control module by the second optical fiber receiver-transmitter module of the first fiber port corresponding with port numbers; IO control module receives packet and the synchronizing clock signals of distribution module transmission, take synchronizing clock signals as clock reference, the state of the IO control information setting data interface successively according to the time interval information of packet and according to packet, or after the IO control information of preserving in packet and time interval information, take synchronizing clock signals as clock reference, the state of the IO control information setting data interface successively according to the time interval information of packet and according to packet
Described data upload flow process comprises:
The state of IO control module image data interface obtains IO control information and keeps the time of this IO control information, the IO control information collected and time interval information is sent to after the IO control information collected and time interval information are maybe saved to memory cell by distribution module by the 4th optical fiber receiver-transmitter module of the second fiber port and again the IO control information collected and time interval information is sent to distribution module by the 4th optical fiber receiver-transmitter module of the second fiber port;
Distribution module receives IO control information and time interval information that IO control module sends and the port numbers of the IO control information received, time interval information and the first fiber port of receiving this IO control information is forwarded to control end.
10. multichannel IO synchronisation control means according to claim 9, characterized by further comprising: when IO control module is from memory cell acquisition time interval information and IO control information, the time interval information got and IO control information are saved to cell fifo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415202.7A CN104967482B (en) | 2015-07-15 | 2015-07-15 | Multichannel IO synchronous control systems and method based on fiber optic communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415202.7A CN104967482B (en) | 2015-07-15 | 2015-07-15 | Multichannel IO synchronous control systems and method based on fiber optic communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104967482A true CN104967482A (en) | 2015-10-07 |
| CN104967482B CN104967482B (en) | 2017-08-08 |
Family
ID=54221437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510415202.7A Active CN104967482B (en) | 2015-07-15 | 2015-07-15 | Multichannel IO synchronous control systems and method based on fiber optic communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104967482B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450545A (en) * | 2018-12-29 | 2019-03-08 | 苏州瑞派宁科技有限公司 | Multipath clock signal distributing method, device and activity-sensing equipment |
| CN110381272A (en) * | 2019-08-22 | 2019-10-25 | 睿镞科技(北京)有限责任公司 | Image sensor combination system and device for generating single and compound visual field images |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7649910B1 (en) * | 2006-07-13 | 2010-01-19 | Atrica Israel Ltd. | Clock synchronization and distribution over a legacy optical Ethernet network |
| CN201966905U (en) * | 2010-08-09 | 2011-09-07 | 上海中朗通信技术有限公司 | Power line carrier communication module with optical fiber port |
| CN202309716U (en) * | 2011-10-20 | 2012-07-04 | 中国船舶重工集团公司第七0七研究所 | Optical fiber-based high-speed real-time communication card |
| CN102930713A (en) * | 2012-10-31 | 2013-02-13 | 湖南大学 | Multichannel synchronous data collecting system and collecting method of optical fiber Ethernet communication |
| CN204229395U (en) * | 2014-12-01 | 2015-03-25 | 陕西海泰电子有限责任公司 | Multi-channel high-speed synchronous digital I/O system |
-
2015
- 2015-07-15 CN CN201510415202.7A patent/CN104967482B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7649910B1 (en) * | 2006-07-13 | 2010-01-19 | Atrica Israel Ltd. | Clock synchronization and distribution over a legacy optical Ethernet network |
| CN201966905U (en) * | 2010-08-09 | 2011-09-07 | 上海中朗通信技术有限公司 | Power line carrier communication module with optical fiber port |
| CN202309716U (en) * | 2011-10-20 | 2012-07-04 | 中国船舶重工集团公司第七0七研究所 | Optical fiber-based high-speed real-time communication card |
| CN102930713A (en) * | 2012-10-31 | 2013-02-13 | 湖南大学 | Multichannel synchronous data collecting system and collecting method of optical fiber Ethernet communication |
| CN204229395U (en) * | 2014-12-01 | 2015-03-25 | 陕西海泰电子有限责任公司 | Multi-channel high-speed synchronous digital I/O system |
Non-Patent Citations (1)
| Title |
|---|
| 周楠: "宽带信号采集系统光纤数据收发模块设计", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450545A (en) * | 2018-12-29 | 2019-03-08 | 苏州瑞派宁科技有限公司 | Multipath clock signal distributing method, device and activity-sensing equipment |
| CN110381272A (en) * | 2019-08-22 | 2019-10-25 | 睿镞科技(北京)有限责任公司 | Image sensor combination system and device for generating single and compound visual field images |
| CN110381272B (en) * | 2019-08-22 | 2022-05-13 | 睿镞科技(北京)有限责任公司 | Image sensor combination system and device for generating single and compound visual field images |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104967482B (en) | 2017-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111736517A (en) | Synchronous acquisition and processing card system based on multichannel ADC and FPGA | |
| CN110401824B (en) | Multiplexed KVM optical transmission system, cascade optical transceiver and optical interface card | |
| CN205320075U (en) | Multi -service digit optical transmitter and receiver based on optic fibre ethernet | |
| CN104618697B (en) | FPGA-based full-configuration Camera link optical fiber real-time image optical transceiver | |
| CN105281783A (en) | Signal decoding unit based on FPGA (Field Programmable Gate Array) and DSP (Digital Signal Processor) and realization method for signal decoding unit based on FPGA and DSP | |
| CN104660989A (en) | Optical fiber-to-full configuration type Camera link real-time image optical transceiver based on FPGA | |
| CN201365253Y (en) | Mixed-signal special optical transmitter and receiver | |
| CN108415870A (en) | A kind of multi-channel high-speed data diostribution device | |
| CN104967482A (en) | Multichannel IO synchronization control system based on optical fiber communication and method | |
| CN202676907U (en) | Multichannel weather radar data collecting device | |
| CN204316532U (en) | Ethernet switch | |
| CN104009941A (en) | Data center rack internal network structure based on arrayed waveguide grating | |
| CN102804653A (en) | Variable bitrate equipment | |
| CN101146240A (en) | A distributed crossed device for share bus | |
| CN208061199U (en) | A kind of multi-channel high-speed data diostribution device | |
| CN108494566A (en) | A kind of PHY cards, network transmission device and method | |
| CN203896368U (en) | Dual-port test device provided with PXI board and used for POS protocol consistency testing | |
| CN116208282A (en) | Multi-channel DDC synchronous acquisition output system of array receiver and implementation method | |
| CN211956461U (en) | Serial data communication circuit and system | |
| CN202103684U (en) | Digital circuit for realizing frame synchronization of STM-64 | |
| CN106452590A (en) | Radar analog signal acquisition and high-speed large-bandwidth data transmission method | |
| CN104618053B (en) | Signal interconnection method and Base Band Unit based on WDM | |
| CN101860712B (en) | Device and method for transmitting camera signals | |
| CN202127409U (en) | Gigabit Ethernet and 10-gigabit Ethernet switching device | |
| CN109831266A (en) | The communication means of integrated communication equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |