CN103051503A - Distributed control method of laser device multi-channel optical fiber system - Google Patents
Distributed control method of laser device multi-channel optical fiber system Download PDFInfo
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- CN103051503A CN103051503A CN2012105547985A CN201210554798A CN103051503A CN 103051503 A CN103051503 A CN 103051503A CN 2012105547985 A CN2012105547985 A CN 2012105547985A CN 201210554798 A CN201210554798 A CN 201210554798A CN 103051503 A CN103051503 A CN 103051503A
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Abstract
The invention provides a distributed control method of a laser device multi-channel optical fiber system. The method comprises the steps that: a main controller is connected with a plurality of concurrent agent controllers through the Ethernet, and exchanges control information through a SNMP (simple network management protocol); and each concurrent agent controller is connected with 1-20 active light equipment through a first serial communication bus, and exchanges the control information through a private protocol. The main controller is connected with the concurrent agent controllers through optical fibers, and the concurrent agent controllers are connected with the active light equipment through serial buses. The main controller is connected with the concurrent agent controllers through the Ethernet, and an Ethernet switch is multiple cascaded through an optical interface so as to expand the network size. According to the method, the main controller is connected with the concurrent agent controllers through the Ethernet, and the main controller is connected with the concurrent agent controllers through the serial buses; the main controller can control thousands of active light equipment; and the information is rapidly and reliably responded in time. The Ethernet is not limited by areas, and cascaded and distributed control is realized.
Description
Technical field
The present invention relates to the control technology field of laser aid system, be specially the distributed control method of a lot of road of a kind of laser aid fibre system.
Background technology
Active Optical Fiber equipment and passive fiber equipment that One's name is legion is arranged in large scale laser instrument are known as a lot of road of laser aid fibre system, and these Active Optical Fiber equipment need strict control and management operation.Expansion along with a lot of road of laser aid fibre system scale, intrasystem fiber plant quantity is with the sharp increase of how much multiples, Active Optical Fiber equipment (following all referred to as light device) is common more than ten thousand nearly, therefore to the demand of the automatic control and management system of light device, seeming becomes increasingly conspicuous and urgent.
The computer centralized control that is based on serial communication that traditional Industry Control mode adopts, in the front end fibre system of laser aid prototype system,, communicate by letter with the light device as slave computer by universal serial bus RS-422 etc. as host computer with computer, realize the control and management to light device.In controlled light device quantity few (more than 30 platform), response is less demanding, communication distance is not far situation, usually adopt this centralized management control device.
But in the fibre system of a lot of road of laser aid, be no more than in 30 the situation deficiency such as shown that this control device reaction is untimely, the structure configuration is dumb, communication efficiency is not high, autgmentability is bad, anti-strong electromagnetic ability etc. is a series of based on the central controlled light device of the computer of serial communication.The more impossible control and management requirement of satisfying a lot of road of the laser aid fibre system with thousands of light devices.
The network management technology comparative maturity successfully is applied in the management of current telecommunications network at present.The modern network administrative skill comprises collection, processing and the control overall process of information, is the information processing system of a complexity.Network management is exactly the process that performance, running status to network are monitored and controlled, and can be by efficient, the reliability service of guard system important guarantee is provided.
Modern network administrative skill characteristics are function logic stratification, Management Information Model, management interface consensus standard.
The a lot of road of laser aid fibre system has the advantages that number of devices is many, device parameter is few, the devices communicating ability is weak, light device in it is the same with general industrial processes system similar devices, do not possess a little less than communication capacity or the communication capacity, and may come from different producers, a large amount of light devices in system do not have hierarchy and mutual interface software yet.Therefore have not yet to see the report of concrete control and management method of the large scale laser instrument of application network administrative skill.
Summary of the invention
The objective of the invention is to design the distributed control method of a lot of road of a kind of laser aid fibre system, master controller is connected by Ethernet with many concurrent agent controllers, adopts the snmp protocol exchange of control information; Every concurrent agent controller is connected with 1～20 active light device through serial communication bus, adopts the proprietary protocol exchange of control information.
All kinds of light devices that One's name is legion is arranged in the fibre system of a lot of road of laser aid.Industrial computer be that the control and management of finishing light device operates better mode, but all kinds of light device only has serial communications capabilities usually as the controller of light device.A large amount of active light devices are arranged in the laser aid, and various active light device communication capacity a little less than, to carry out fast and efficiently control and management for laser aid, it is not all right only depending on an industrial computer.
If serial communication speed S is 9600bit/s, each byte f comprises data bit 8bit, parity check bit 1bit, start bit 1bit and position of rest 1bit, i.e. f=8+1+1+1; Every frame information comprises n byte, and the length of a frame information is nf, and the time T that sends a frame information can be calculated by following formula:
T=1/S×f×n
=(1/9600)×11×n
Work as n=50, namely a frame information is 50 bytes,
T=0.0011458×50=0.057(s)
As seen sending the time with information frame of 50 byte lengths is 0.057 second.The infomational message that namely sends 50 byte lengths needs 0.057 second, considers the transmitting-receiving acknowledgement mechanism, the 0.114 second time that complete communication process need to double again.
Usually people's wait tolerance: intact degree is＜1 second, and general degree is 1～2 second, at utmost＜3 second.Wait for that namely people's tolerance is difficult to accept more than 3 seconds.
Wait tolerance according to the people, the quantity of the active light device of the direct control and management of a concurrent agent controller should be less than or equal to 20, could finish at 1～2 second a data repeating query of institute's management equipment, the active light device of management and control is waited for the stand-by period in turn and can not be accepted long greater than 20.
The distributed control method of a lot of road of the laser aid fibre system of the present invention's design is: master controller is connected by Ethernet with many concurrent agent controllers, adopts the snmp protocol exchange of control information; Every concurrent agent controller is connected with 1～20 active light device through serial communication bus, adopts the proprietary protocol exchange of control information.
Described master controller is personal computer or server, and described concurrent agent controller is embedded industrial control computer or embedded communication processor.
Described master controller is that fiber optic Ethernet is connected with concurrent agent controller.
Described master controller connects Ethernet switch, and each electrical interface of Ethernet switch connects a concurrent agent controller.
Described Ethernet switch has the optical interface more than 2, connects master controller and subordinate's Ethernet switch through optical fiber, perhaps connects higher level and subordinate's Ethernet switch through optical fiber, consists of the ethernet network of multistage Ethernet switch cascade.Multistage Ethernet switch can carry out cascade as required, to enlarge network size, namely enlarges the control scale.
Ethernet switch in the ethernet network of described cascade can have infinitely multistage in theory, but the progression of cascade is affected by several factors in actual applications, wherein mainly is propagation delay time.Therefore the Ethernet switch in the ethernet network of the described multistage Ethernet switch cascade of preferred version is 2～20 grades.
Compared with prior art, the advantage of the distributed control method of a lot of road of laser aid of the present invention fibre system is:
1, master controller is connected through Ethernet with concurrent agent controller, concurrent agent controller is connected through the RS485 bus with controlled active light device, ethernet communication rate 100Mbps, in the identical situation of data throughout, the raising of traffic rate means alleviating of network load and reducing of Internet Transmission time-delay, be that network collision probability descends greatly, communication efficiency is improved; The quantity of the concurrent agent controller that master controller connects reaches also can satisfy the response of hundred Milliseconds more than 1000; Distributed control mode makes master controller can control up to ten thousand active light devices, and the guarantee information response in time, fast, reliably;
2, master controller is connected by Ethernet with concurrent agent controller, and the composition of Ethernet and scale are realized flexibly by the cascade of Ethernet switch.Cascade between the Ethernet switch is divided into a plurality of network segments with Ethernet, because the function that Ethernet switch has the data storage, transmits makes the Frame of input and output between each port can access buffering, no longer bumps; Switch also can carry out packet filtering to the data of transmission over networks simultaneously, data transfer is only limit in local network segment to carry out, and need not pass through backbone network, do not take the bandwidth of other network segments yet, thereby reduced the network load of all network segments and backbone network; Ethernet uses full-duplex communication, so that the data between each port receive and send respectively message frame simultaneously, can not clash;
3, master controller is connected the restriction that is not subjected to the region with the Ethernet of concurrent agent controller, device controller, the active light device of each concurrent agent controller and connection thereof can distribute as required, and namely master controller can be realized classification, distributed control to active light device;
4, the quantity of the active light device that connects of each device controller has guaranteed that the communication response time is in ideal range in 20;
5, device controller can be different cabinet equipment or the professional dish of subrack, is fit to different laser aid flexible configuration;
6, this control method also can be used for other detection node One's name is legion, and requires the large-scale application occasion that transmission speed is fast, the response time is few, the touring cycle lacks, such as production equipment control, machinery manufacturing industry detection, port logistics information system management etc.
Description of drawings
Fig. 1 is the control device structural representation that the distributed control method embodiment of a lot of road of this laser aid fibre system sets up.
Embodiment
The distributed control method embodiment of a lot of road of this laser aid fibre system sets up the distributed control device of a lot of road of laser aid fibre system to implement this method, as shown in Figure 1, many active light devices that comprise master controller, Ethernet switch, concurrent agent controller and laser aid.
Described master controller connects Ethernet switch through optical fiber, and this example has the Ethernet switch of 14 grades of cascades.Ethernet switches at different levels connect a network segment, this routine first order Ethernet switch connects a cabinet device controller and the professional disk controller of subrack, the professional disk controller of cabinet device controller and subrack is 2 kinds of concurrent agent controllers that cooperate with active light device, the cabinet device controller disk controller of being connected with subrack connects respectively each active light device of being furnished with cabinet equipment or the professional dish of subrack of reference pulse assembly, consist of the reference pulse assembly network segment, first order Ethernet switch also connects a second level Ethernet switch; Second level Ethernet switch and the first order are similar, connect the professional disk controllers of a cabinet device controller and three subracks and (only draw one among Fig. 1, represent many with pecked line), each cabinet device controller disk controller of being connected with subrack connects respectively each active light device of being furnished with cabinet equipment or the professional dish of subrack of shaping pulse assembly, consist of each network segment of shaping pulse assembly, second level Ethernet switch also connects six Ethernet switches, i.e. eight grades of Ethernet switches of the third level to the (transmission amplifier module); Eight grades of Ethernet switches of the third level to the respectively connect a cabinet device controller and three professional disk controllers of subrack (only draw one among Fig. 1, represent many with pecked line), each cabinet device controller disk controller of being connected with subrack connects respectively each active light device of being furnished with cabinet equipment or the professional dish of subrack of transmission amplifier module, consist of each network segment of transmission amplifier module, the 8th grade of Ethernet switch of transmission amplifier module also connects six, the 9th grade to the tenth level Four Ethernet switch (power amplifier assembly); The 9th grade respectively connects a cabinet device controller and the professional disk controllers of three subracks (only draw one among the figure to the tenth level Four Ethernet switch, represent many with pecked line), what each cabinet device controller disk controller of being connected with subrack connected respectively power amplifier assembly is furnished with each active light device of the professional dish of cabinet equipment or subrack, consists of each network segment of power amplifier assembly.
This routine Ethernet switch is furnished with two optical interfaces.This routine master controller and first order Ethernet switch are on same frame, and available electrical interface connects.When master controller and first order Ethernet switch on different frames, then connect through optical fiber.The first order enlarges the Ethernet scale to connecting through the optical fiber cascade between the fourth stage Ethernet switch.Anti-electromagnetic interference capability between each network segment frame that optical interface optical fiber connects is stronger.Usually each frame is equipped with at least one Ethernet switch, and the electrical interface of Ethernet switch connects 1 or many concurrent agent controllers.
Concurrent agent controller in each frame of this example is divided into cabinet device controller and the professional disk controller of subrack, connects respectively the active light device that 8 (covers) have cabinet equipment and the professional dish of subrack through the RS-485 device bus.
The concurrent agent controller quantity of each frame and its active light device quantity that connects is flexible configuration as required, and a concurrent agent controller is connected to source light device quantity and is controlled in 20.
Concurrent agent controller reaches more than 60 among this control method embodiment, and the source light device quantity that is connected to reaches more than 4480.
Above-described embodiment only is the specific case that purpose of the present invention, technical scheme and beneficial effect are further described, and the present invention is defined in this.All any modifications of within scope of disclosure of the present invention, making, be equal to replacement, improvement etc., all be included within protection scope of the present invention.
Claims (6)
1. the distributed control method of a lot of road of laser aid fibre system is characterized in that:
Master controller is connected by Ethernet with many concurrent agent controllers, adopts the snmp protocol exchange of control information; Every concurrent agent controller is connected with 1～20 active light device through serial communication bus, adopts the proprietary protocol exchange of control information.
2. the distributed control method of a lot of road of laser aid according to claim 1 fibre system is characterized in that:
Described master controller is personal computer or server, and described concurrent agent controller is embedded industrial control computer or embedded communication processor.
3. the distributed control method of a lot of road of laser aid according to claim 1 and 2 fibre system is characterized in that:
Described master controller is that fiber optic Ethernet is connected with concurrent agent controller.
4. the distributed control method of a lot of road of laser aid according to claim 1 and 2 fibre system is characterized in that:
Described master controller connects Ethernet switch, and each electrical interface of Ethernet switch connects a concurrent agent controller.
5. the distributed control method of a lot of road of laser aid according to claim 4 fibre system is characterized in that:
Described Ethernet switch has the optical interface more than 2, connects master controller and subordinate's Ethernet switch through optical fiber, perhaps connects higher level and subordinate's Ethernet switch through optical fiber, consists of the ethernet network of multistage Ethernet switch cascade.
6. the distributed control method of a lot of road of laser aid according to claim 5 fibre system is characterized in that:
Ethernet switch in the ethernet network of described multistage Ethernet switch cascade is 2～20 grades.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539560A (en) * | 2015-01-30 | 2015-04-22 | 浪潮电子信息产业股份有限公司 | Optical fiber switch system, data processing method thereof and channel parser |
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| CN101909384A (en) * | 2009-06-08 | 2010-12-08 | 海洋王照明科技股份有限公司 | Distributed intelligent illumination control system and distributed intelligent illumination control method |
| CN102353803A (en) * | 2011-06-07 | 2012-02-15 | 陕西精进测控设备有限公司 | Collecting and distributing racking type centrifuge rotating speed and friction power consumption measuring method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006108278A (en) * | 2004-10-04 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Semiconductor laser |
| CN201044458Y (en) * | 2006-12-19 | 2008-04-02 | 冲浪平台（北京）网络技术有限公司 | Step electronic mail system based on virtual special net and step storage mode |
| CN101909384A (en) * | 2009-06-08 | 2010-12-08 | 海洋王照明科技股份有限公司 | Distributed intelligent illumination control system and distributed intelligent illumination control method |
| CN102353803A (en) * | 2011-06-07 | 2012-02-15 | 陕西精进测控设备有限公司 | Collecting and distributing racking type centrifuge rotating speed and friction power consumption measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104539560A (en) * | 2015-01-30 | 2015-04-22 | 浪潮电子信息产业股份有限公司 | Optical fiber switch system, data processing method thereof and channel parser |
| CN104539560B (en) * | 2015-01-30 | 2017-09-26 | 浪潮电子信息产业股份有限公司 | Optical fiber switch system and its data processing method, channel resolver |
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Application publication date: 20130417 |