CN102221905B - Double-machine switch extending equipment - Google Patents
Double-machine switch extending equipment Download PDFInfo
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- CN102221905B CN102221905B CN 201110197516 CN201110197516A CN102221905B CN 102221905 B CN102221905 B CN 102221905B CN 201110197516 CN201110197516 CN 201110197516 CN 201110197516 A CN201110197516 A CN 201110197516A CN 102221905 B CN102221905 B CN 102221905B
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Abstract
The invention discloses double-machine switch extending equipment, comprising transmitting-end equipment and receiving-end equipment, wherein the transmitting-end equipment is connected with two computers respectively; the transmitting-end equipment is provided with a double-machine arbitration unit, an encoding/decoding unit and the like; and the transmitting-end equipment is connected with the receiving-end equipment by an optical fiber. The transmitting ends of externally extending equipment of the computers and double-machine hot-spare arbitration equipment are combined into the transmitting ends of the double-machine switch extending equipment; the receiving-end equipment is extended by the digital encoding/decoding and optical fiber, so that the whole equipment has the functions of the extending equipment and the arbitration equipment, the extension of the double-machine hot-spare arbitration equipment and the external equipment can be realized, and simultaneously, the conditions of installation, use and maintenance are improved.
Description
Technical field
The present invention relates to a kind of equipment of realizing two main frame active and standby mutual switchings each other, relate in particular to a kind of double-machine switch extending equipment.
Background technology
Being used for the computer system that safety of railway traffic is produced, must possessing the ability to work that ran without interruption in 7 * 24 hours, is high reliability and the security that guarantees system, often adopts technically two main frames active and standby form each other.The main frame of same function has the operation simultaneously of two covers, and one is main frame, and one is guest machine.When main frame breaks down can not normally move the time, require guest machine automatically to transfer main frame to, continue operation, same alarm.In active and standby machine conversion, blocked operation equipment simultaneously, make the user can operate new main frame.
In order to improve the reliability of computer operation, computing machine need to be placed on the environment such as temperature, humidity, health, power supply preferably in machine room, the place large away from mobility of peoples such as command centre or operation office for train receiving departure, that indoor environment is relatively poor; Simultaneously, the operating equipments such as computing machine and keyboard, mouse, display is separated, can effectively reduce the noise of workplace, improve personnel's work situation.By installing and arrange the extension device of computer operations facility (keyboard, mouse, audio frequency, serial ports, multihead display), can realize this goal.
Control and management aspect at two-shipper, still there is no to satisfy the above equipment that requires.Be generally at present with the use that combines of numerous autonomous devices such as KVM switch, audio switch, also needing of having arranges separately a two-shipper arbitration equipment.When occuring to report to the police, need to manually switch, can not automatically switch.Extend for operating equipment, use lengthens cable or uses the mode of twisted-pair feeder to extend more at present, and this dual mode all exists and extends the problem that distance is limited, unstable, easily be disturbed, and therefore can not satisfy the above-mentioned crucial demand of using.
More than can find out, have the following disadvantages at least in prior art:
Many device combinations use, and are all inconvenient on function, in application, work in coordination also inharmonious, and line is mixed and disorderly, takes up room, and easily becomes new trouble spot.Active and standby machine management equipment is intelligent poor, and specificity is poor, can not link; The switching of computer operations facility is hand-manipulated on multiple devices, can not automatically switch; Extension function is unstable, extends apart from limited, can not meet the demands.
Summary of the invention
The purpose of this invention is to provide a kind of double-machine switch extending equipment, this equipment has the function of extension device and arbitration equipment, can realize the function that two-node cluster hot backup arbitration, peripheral hardware extend, and improves simultaneously installation, use, maintenance condition.
The objective of the invention is to be achieved through the following technical solutions:
Double-machine switch extending equipment of the present invention comprises sending ending equipment, receiving device, and described sending ending equipment is connected respectively with two computing machines;
Described sending ending equipment is provided with two-shipper arbitration unit, computer peripheral equipment analogue unit, transmitting terminal video drive unit, transmitting terminal coding/decoding unit, transmitting terminal photoelectric conversion unit, A/D converting unit, described two-shipper arbitration unit and computer peripheral equipment analogue unit are connected with the transmitting terminal photoelectric conversion unit by described transmitting terminal coding/decoding unit respectively, and described transmitting terminal video drive unit passes through the A/D converting unit and is connected with the transmitting terminal photoelectric conversion unit;
Described receiving device is provided with receiving end photoelectric conversion unit, receiving encoding/decoding unit, D/A converting unit, receiving end video drive unit, described receiving end photoelectric conversion unit is connected with computer peripheral equipment by receiving encoding/decoding unit, and described receiving end photoelectric conversion unit is connected with the computer peripheral equipment display screen with the receiving end video drive unit by the D/A converting unit successively;
Described transmitting terminal photoelectric conversion unit is connected by optical fiber with described receiving end photoelectric conversion unit.
As seen from the above technical solution provided by the invention, double-machine switch extending equipment provided by the invention, because sending ending equipment is provided with the two-shipper arbitration unit, the transmitting terminal of computer peripheral equipment extension device and the arbitration equipment of two-node cluster hot backup are merged into the double-machine switch extending equipment transmitting terminal, receiving device extends by digital coding/decoding and optical fiber, make equipment set have the function of extension device and arbitration equipment, can realize that two-node cluster hot backup arbitration, peripheral apparatus extend, and improve installation, use, maintenance condition simultaneously.
Description of drawings
The principle schematic of the double-machine switch extending equipment that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail.
Double-machine switch extending equipment of the present invention, its better embodiment be as shown in Figure 1:
Comprise sending ending equipment, receiving device, described sending ending equipment is connected respectively with two computing machines;
Described sending ending equipment is provided with two-shipper arbitration unit, computer peripheral equipment analogue unit, transmitting terminal video drive unit, transmitting terminal coding/decoding unit, transmitting terminal photoelectric conversion unit, A/D converting unit, described two-shipper arbitration unit and computer peripheral equipment analogue unit are connected with the transmitting terminal photoelectric conversion unit by described transmitting terminal coding/decoding unit respectively, and described transmitting terminal video drive unit passes through the A/D converting unit and is connected with the transmitting terminal photoelectric conversion unit;
Described receiving device is provided with receiving end photoelectric conversion unit, receiving encoding/decoding unit, D/A converting unit, receiving end video drive unit, described receiving end photoelectric conversion unit is connected with computer peripheral equipment by receiving encoding/decoding unit, and described receiving end photoelectric conversion unit is connected with the computer peripheral equipment display screen with the receiving end video drive unit by the D/A converting unit successively;
Described transmitting terminal photoelectric conversion unit is connected by optical fiber with described receiving end photoelectric conversion unit.
Described sending ending equipment is connected with computing machine by serial ports or network interface.
Described computer peripheral equipment comprises keyboard, mouse, audio frequency, video interface, I/O interface etc.
Double-machine switch extending equipment of the present invention, the transmitting terminal of computer peripheral equipment extension device and the arbitration equipment of two-node cluster hot backup are merged into the double-machine switch extending equipment transmitting terminal, receiving device extends by digital coding/decoding and optical fiber, function with extension device and arbitration equipment, can realize that two-node cluster hot backup arbitration, peripheral apparatus extend, and improve installation, use, maintenance condition simultaneously.
Specific embodiment:
As shown in Figure 1, be shown as example (two displays of a computer peripheral equipment) with double screen, system is comprised of transmitting terminal and receiving end, and the sending ending equipment interface comprises: keyboard, mouse, audio frequency, DVI, display, serial ports etc. can increase other I/O interfaces as required.The two-shipper arbitration unit is by serial ports receiving computer heartbeat message, and judgement two-shipper state determines main and standby relation and sends to computing machine by serial ports.When switch between master and slave machines, receiving device automatically switches to main computer.Keyboard, mouse, audio frequency, DVI signal etc. send to receiving end through separating coding and conversion by optical fiber.
The receiving device interface comprises: keyboard, mouse, audio frequency, DVI, serial ports etc.Conciliate coding with reduction such as keyboard, mouse, audio frequency, DVI, rs 232 serial interface signals through conversion.
The below is described in detail function and the principle of the embodiment of the present invention:
1, the active and standby machine monitoring management function of intelligence
Principle: the working state signal of sending ending equipment while Receiving Host and standby host, analyze through the two-shipper arbitration unit, generate active and standby machine duty coding, again coding is beamed back main frame and standby host, main frame and standby host are according to the order of coding, determine the duty (main frame or standby host) of oneself, sending ending equipment sends the order of whether switching to receiving device simultaneously.
Implementation method: the serial ports of active and standby machine is connected with sending ending equipment communicates, active and standby machine regularly sends status signal to sending ending equipment, the two-shipper arbitration unit is according to receiving the time interval of signal and the numerical value of signal, determine the duty of active and standby machine, generate command code, then will encode and send it back main frame and standby host by serial ports.When if active and standby machine has conversion, send the instruction of switching to receiving device.
2, whole switchings of computing machine operating external device
Principle and implementation method: external unit comprises: keyboard, mouse, audio frequency, serial ports, multihead display etc.These signals are processed respectively.Keyboard, mouse adopt a slice MCU to be connected with the keyboard and mouse of two computing machines, and the keyboard and mouse equipment of simulation framework is replied main frame to inquiry and the order of equipment, make main frame can not think not connection device.MCU connects keyboard and mouse simultaneously, receives the signal of keyboard and mouse, and sends signal to main frame.Send to which platform main frame, depend on switching command.Rs 232 serial interface signal by the protocol conversion chip, with the RS232 level signal, converts the Transistor-Transistor Logic level signal to, switches by analog switch, then by the protocol conversion chip, with the Transistor-Transistor Logic level signal, converts the signal of RS232 level to.Audio frequency directly switches by analog switch, then passes through the audio driven chip, drives the audio amplifier pronunciation.Multihead display is pressed the quantity of display screen, switches respectively, for the DVI digital signal, adopts special-purpose DVI numeral to switch chip, switches.
3, optical fiber is the operating external device prolongation of medium:
Principle: transmitting terminal is with keyboard, mouse, serial ports, the sound signal of computing machine, and the unified digital coding that carries out is processed, and converting frequency to is the difference serial signal of 40M, through level conversion, drives optical module, output optical signal.Receiving end through decoding, then is separated into corresponding keyboard, mouse, serial ports, sound signal with the signal of optical module output, is connected with corresponding equipment.
Implementation: the Signal coding of transmitting terminal and receiving end and decoding, all adopt on-site programmable gate array FPGA to process.Be about to the rs 232 serial interface signal of keyboard, mouse, Transistor-Transistor Logic level, the sound signal through digital processing is connected with FPGA, carries out unified coding by FPGA, and adds fault-tolerant information, sends with serial form, and serial frequency is 40MHz.Sound signal then is communicated by letter with FPGA carry out A/D or D/A conversion through the special audio process chip after.
4, above technology is integrated in a set of equipment:
Principle and realization: realize whole functions, comprise: numerous functions such as main frame standby host monitoring running state is controlled, receiving device switches, A/D, the D/A conversion of receiving device data, serialization coding, the input of light output light, and can unified operation.Therefore various functions adopts modular design, takes into full account the factor of the each side such as power supply is supplied with, crosstalked, heat radiation, rationalization's enforcement.
Double-machine switch extending equipment of the present invention switches arbitration equipment at the integrated two-shipper of transmitting terminal, can realize two-node cluster hot backup automatic switchover, manual switchover, and monitors the duplex running state.Adopt optical fiber as extending transmission medium, guarantee transmission quality, support long-distance transmissions, guarantee equipment stable operation.Realized two main frame monitoring running states, main frame, standby host intelligence are set management, and main frame, standby host operation terminal device (comprising keyboard, mouse, multihead display, audio frequency, serial ports) interlock are switched, and operation terminal device digital coding and optical fiber extend.
Integrated level is high, and the solution coding of the multi-signals such as DVI, keyboard, mouse, audio frequency, network, serial ports, USB and transmitting function and two-node cluster hot backup arbitration function are integrated in a set of equipment; Interface is clear, and is simple and clear; Adopt standard design, be fit to frame and install; Adopt optical cable transmission, construct convenient, transmission performance is good.Above characteristics all provide very big facility for installation, maintenance, the use of equipment.
Above technology is integrated in a set of equipment, reduces installation and maintenance work.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (3)
1. a double-machine switch extending equipment, is characterized in that, comprises sending ending equipment, receiving device, and described sending ending equipment is connected respectively with two computing machines;
Described sending ending equipment is provided with two-shipper arbitration unit, computer peripheral equipment analogue unit, transmitting terminal video drive unit, transmitting terminal coding/decoding unit, transmitting terminal photoelectric conversion unit, A/D converting unit, described two-shipper arbitration unit and computer peripheral equipment analogue unit are connected with the transmitting terminal photoelectric conversion unit by described transmitting terminal coding/decoding unit respectively, and described transmitting terminal video drive unit passes through the A/D converting unit and is connected with the transmitting terminal photoelectric conversion unit;
Described receiving device is provided with receiving end photoelectric conversion unit, receiving encoding/decoding unit, D/A converting unit, receiving end video drive unit, described receiving end photoelectric conversion unit is connected with computer peripheral equipment by receiving encoding/decoding unit, and described receiving end photoelectric conversion unit is connected with the computer peripheral equipment display screen with the receiving end video drive unit by the D/A converting unit successively;
Described transmitting terminal photoelectric conversion unit is connected by optical fiber with described receiving end photoelectric conversion unit;
The working state signal of described sending ending equipment while Receiving Host and standby host, analyze through the two-shipper arbitration unit, generate active and standby machine duty coding, again coding is beamed back main frame and standby host, main frame and standby host are according to the order of coding, determine oneself to be main frame or standby host, sending ending equipment sends the order of whether switching to receiving device simultaneously.
2. double-machine switch extending equipment according to claim 1, is characterized in that, described sending ending equipment is connected with computing machine by serial ports or network interface.
3. double-machine switch extending equipment according to claim 1 and 2, is characterized in that, described computer peripheral equipment comprises keyboard, mouse, audio frequency, video interface, I/O interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110197516 CN102221905B (en) | 2011-07-14 | 2011-07-14 | Double-machine switch extending equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110197516 CN102221905B (en) | 2011-07-14 | 2011-07-14 | Double-machine switch extending equipment |
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| CN102221905A CN102221905A (en) | 2011-10-19 |
| CN102221905B true CN102221905B (en) | 2013-05-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001700A (en) * | 2012-11-30 | 2013-03-27 | 沧州供电公司 | Centralized remote KVM (Keyboard and Video and Mouse) system based on optical cable device |
| CN106101026A (en) * | 2016-06-07 | 2016-11-09 | 深圳证券通信有限公司 | A kind of UDP multicasting method of highly reliable low latency |
| CN108092753B (en) * | 2017-12-15 | 2021-01-19 | 北京航天测控技术有限公司 | Hot standby redundancy system adopting hardware memory moving synchronization |
| CN112565889A (en) * | 2020-12-01 | 2021-03-26 | 威创集团股份有限公司 | 4K high definition receiving box and video output system thereof |
| CN117022405B (en) * | 2023-10-10 | 2024-03-01 | 中国铁道科学研究院集团有限公司通信信号研究所 | Dual-machine control switching system with monitoring function |
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| CN101071407A (en) * | 2007-06-22 | 2007-11-14 | 中兴通讯股份有限公司 | Active-standby system and method for realizing interconnecting device switching of external devices therebetween |
| CN101513887A (en) * | 2008-12-29 | 2009-08-26 | 卡斯柯信号有限公司 | Method for competition type hot standby switching of intelligent automatic train monitoring system |
| CN101567801A (en) * | 2008-04-24 | 2009-10-28 | 北京盖特佳信息安全技术股份有限公司 | Method for realizing double-computer hot backup of security-isolation and information-exchange systems |
| CN101634904A (en) * | 2008-07-25 | 2010-01-27 | 宏正自动科技股份有限公司 | Kvm system |
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Patent Citations (4)
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| CN101071407A (en) * | 2007-06-22 | 2007-11-14 | 中兴通讯股份有限公司 | Active-standby system and method for realizing interconnecting device switching of external devices therebetween |
| CN101567801A (en) * | 2008-04-24 | 2009-10-28 | 北京盖特佳信息安全技术股份有限公司 | Method for realizing double-computer hot backup of security-isolation and information-exchange systems |
| CN101634904A (en) * | 2008-07-25 | 2010-01-27 | 宏正自动科技股份有限公司 | Kvm system |
| CN101513887A (en) * | 2008-12-29 | 2009-08-26 | 卡斯柯信号有限公司 | Method for competition type hot standby switching of intelligent automatic train monitoring system |
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