CN101739144A - High-density extendible KVM monitoring system - Google Patents
High-density extendible KVM monitoring system Download PDFInfo
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Abstract
The invention discloses a high-density extendible KVM monitoring system, which belongs to the computer monitoring technology. A structure of the system comprises a control panel and controlled computers, wherein the control panel controls a plurality of controlled computers; each controlled computer is connected with a computer interface module; the controlled computers are connected with the computer interface modules through mouse cables, key cables and video cables; the plurality of computer interface modules are connected in series through super five category network cables to form controlled computer links, and each controlled computer link is connected to the control panel; a user monitors and operates the controlled computers through the control panel; and the control panel adopts high-speed switching technology and can extend n controlled computer links. Compared with the prior art, the high-density extendible KVM monitoring system integrates the multichannel switching technology into the user control panel seamlessly, so that the extendibility and signal quality of the system can be ensured better in narrow space.
Description
Technical field
The present invention relates to a kind of computer monitoring technology, the extendible KVM supervisory system of specifically a kind of high density.
Background technology
Along with fast development of society, scope of the enterprise enlarges, the increase of data processing task has caused server to develop to the direction of a group of planesization, and the server group of planes system of a hundreds of node begins of common occurrence.Machine room space and cluster management also more and more are a problem.The KVM technology has just been arisen at the historic moment.
KVM is the abbreviation of keyboard (Keyboard), display (Video), mouse (Mouse), can allow the supvr abandon unnecessary keyboard, monitor and mouse, by visiting and control many station servers once cover KVM.
Can be divided into parallel connected mode and mode connected in series in existing KVM system, wherein, parallel KVM switched system directly links to each other with each controlled computer, cause under device space condition of limited, but system's number of connection is very limited, is generally 8,16, maximum 32, and it is very inconvenient to expand, and the restriction and the cable density that are subjected to signal quality are big, and general cascade will cause degraded signal quality and the chaotic situation of wiring for 3 grades.
The structurally parallel relatively KMV of serial KVM has made radical change.It utilizes Computer Interface Module to connect controlled computer, and is connected in series by netting twine between the interface module, makes controlled computer form a link.Simplified greatly on wiring and extended mode, the connection theoretical peak of a common link is 127 computing machines.This is general expansion, relates to more massive application, generally needs Port Multiplier equipment of expansion, promptly selects 1 Port Multiplier that the link that will monitor is directed on user's operating platform by a N.Such expansion also has problems: the one, and MUX is disposed in wiring in addition, makes wiring become loaded down with trivial details, makes the total system structure become not compact in addition; The 2nd, signal quality, multichannel is selected the equipment signal relay of saying so to a certain extent, this is very unfavorable for the serial KVM that emphasizes signal quality, each relaying, the reflection that must relate to signal with crosstalk, and as a separate equipment, Chang outside lead can't be done well Signal Matching relatively.
Summary of the invention
Technical assignment of the present invention provides a kind of user that incorporated that the multichannel handoff technique is seamless and controls platform, in narrow space, makes the extensibility of system and the extendible KVM supervisory system of a kind of high density that signal quality all is guaranteed.
Technical assignment of the present invention is realized in the following manner, comprises control desk and controlled computer, many controlled computers of a control desk control; All be connected with a Computer Interface Module on every controlled computer, controlled computer links to each other by mouse lines, keyboard chord and video line with Computer Interface Module; To surpass the series connection of 5 class netting twines, form a controlled computer link between a plurality of Computer Interface Modules, each bar controlled computer link is connected to control desk; The user monitors and operates controlled computer by control desk; Computer Interface Module arrives control desk with the video signal transmission of controlled computer, and sends mouse, the keyboard action signal that control desk sends to controlled computer; Control desk adopts the high speed handoff technique, can expand N bar controlled computer link, N=2
nUser's operating platform is external local mouse, keyboard, a display of control desk, with the OSD menu as human-computer interaction interface, the OSD menu provides the channel selecting tabulation, the user can select to carry out switching between each controlled computer link by keyboard, and certain in respective link controlled computer equipment is carried out control operation.
Described control desk comprises coding module, OSD special chip, the MCU controller II that speed-sensitive switch array, MCU controller I and CPLD chip are formed, MCU controller I connects the CPLD chip, the CPLD chip connects the speed-sensitive switch array, MCU controller II connects the OSD special chip, MCU controller I is connected with MCU controller II, MCU controller II connects external local mouse, the keyboard of control desk, the OSD special chip connects the external local display of control desk, and the speed-sensitive switch array connects the controlled computer link.
The OSD special chip produces the display frame of OSD menu operation, the control end of OSD chip and Data Source all are by MCU controller II, carry out data communication by the RS232 interface between MCU controller I and the MCU controller II, MCU controller I gives MCU controller II with the state real-time informing of current speed-sensitive switch array, MCU controller II sends to MCU controller I to the up-to-date switching command of user's operating platform user, and I directly carries out associative operation by the MCU controller.
The coding module control that the speed-sensitive switch array is made up of MCU controller I and CPLD chip, MCU controller I provides n position control index signal, this n position index signal is as the input of CPLD chip, in the CPLD chip, use the decoding scheme module of VHDL language design, with n position index signal interpretation becoming N road gating signal, N=2
n, the speed-sensitive switch array is controlled.
The speed-sensitive switch array can be expanded N bar computing machine link, N=2
nThe difference speed-sensitive switch CE of N computing machine chain route speed-sensitive switch array with end, each one of computing machine chain route has the difference speed-sensitive switch chip TS3DV416 control of 4 pairs of difference speed-sensitive switches, wherein 1 pair of difference speed-sensitive switch is used for the transmission of digital control signal, and other 3 pairs of difference speed-sensitive switches are used for the transmission of video simulating signal; This difference speed-sensitive switch chip bandwidth can reach more than the 800MHZ; Difference speed-sensitive switch chip is provided with gating signal, and when difference speed-sensitive switch chip during by gating, input and output are connected; When difference speed-sensitive switch chip was cut off, output kept high-impedance state; Whole speed-sensitive switch array is made of N such difference speed-sensitive switch chip part just, has formed N and has selected 1 multiplexed formula structure; Every group by the end of the controlled computer vision signal of gating, be connected with capacitance-resistance Signal Matching network, eliminate the signal reflex and the common mode interference of each controlled computer link.
Each controlled computer link max cap. 127 controlled computers of can connecting, the high speed handoff technique of control desk has carried out the expansion of N road, N=2 to the controlled computer link
n, making system possess quantity is the huge monitoring density of N*127 controlled computer.
OSD is the abbreviation of on-screen display, i.e. the screen menu type regulative mode.Generally be the rectangle menu of the every reconciling items information of display that ejects by screen behind the Menu key, can comprise that to the every working index of display color, pattern, geometric configuration etc. adjust by this menu, thereby reach best user mode.It reaches the purpose of adjusting parameters by the function menu that is presented on the screen.
CPLD (Complex Programmable Logic Device) CPLD is the device that develops out from PAL and GAL device, and scale is big comparatively speaking, and complex structure belongs to the large scale integrated circuit scope.It is a kind of user according to needs separately and the digital integrated circuit of constitutive logic function voluntarily.Its basic design method is by the integrated platform that develops software, and with methods such as schematic diagram, hardware description languages, generates corresponding file destination, by download cable (" in system " programming) code is sent in the objective chip, realizes the digital display circuit of design.
MCU (Micro Control Unit) Chinese is a micro-control unit, claim one chip microcomputer (Single Chip Microcomputer) or single-chip microcomputer again, be meant appearance and development thereof along with large scale integrated circuit, CPU, RAM, ROM, timing number device and the multiple I/O interface of computing machine are integrated on a slice chip, form the computing machine of chip-scale, for doing various combination control in different application scenarios.
The extendible KVM supervisory system of a kind of high density of the present invention has the following advantages:
1, the multichannel handoff technique is the seamless user that incorporated controls platform, in narrow space, makes the extensibility of system and signal quality all be guaranteed;
2, do not increase system cost and wiring difficulty, and complete easy man-machine interface scheme is provided;
3, difference speed-sensitive switch chip bandwidth can reach more than the 800MHZ, low crosstalks, Low ESR, can ensure to greatest extent that analog video signal and digital controlled signal concentrate transmission quality under the situation in high density;
4, OSD menu operation, not only easy to adjust, and also the content of adjusting is also many;
5, reasonable in design, easy to use, thereby, have good value for applications.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Accompanying drawing 1 is the module frame chart of the extendible KVM supervisory system of a kind of high density;
Accompanying drawing 2 is the connection layout of the difference speed-sensitive switch chip of the extendible KVM supervisory system of a kind of high density;
Accompanying drawing 3 is the difference speed-sensitive switch CE signal interpretation circuit diagram of the extendible KVM supervisory system of a kind of high density.
Embodiment
Explain below with reference to Figure of description and specific embodiment the extendible KVM supervisory system of a kind of high density of the present invention being done.
Embodiment:
As shown in Figure 1, the extendible KVM supervisory system of a kind of high density of the present invention, its structure comprises control desk and controlled computer, many controlled computers of a control desk control; All be connected with a Computer Interface Module on every controlled computer, controlled computer links to each other by mouse lines, keyboard chord and video line with Computer Interface Module; To surpass the series connection of 5 class netting twines, form a controlled computer link between a plurality of Computer Interface Modules, each bar controlled computer link is connected to control desk; The user monitors and operates controlled computer by control desk; Computer Interface Module arrives control desk with the video signal transmission of controlled computer, and sends mouse, the keyboard action signal that control desk sends to controlled computer; Control desk adopts the high speed handoff technique, can expand N bar controlled computer link, N=2
nUser's operating platform is external local mouse, keyboard, a display of control desk, with the OSD menu as human-computer interaction interface, the OSD menu provides the channel selecting tabulation, the user can select to carry out switching between each controlled computer link by keyboard, and certain in respective link controlled computer equipment is carried out control operation.
Described control desk comprises coding module, OSD special chip, the MCU controller II that speed-sensitive switch array, MCU controller I and CPLD chip are formed, MCU controller I connects the CPLD chip, the CPLD chip connects the speed-sensitive switch array, MCU controller II connects the OSD special chip, the OSD special chip connects the speed-sensitive switch array, MCU controller I is connected with MCU controller II, MCU controller II connects external local mouse, the keyboard of control desk, the OSD special chip connects the external local display of control desk, and the speed-sensitive switch array connects the controlled computer link.
The OSD special chip produces the display frame of OSD menu operation, the control end of OSD chip and Data Source all are by MCU controller II, carry out data communication by the RS232 interface between MCU controller I and the MCU controller II, MCU controller I gives MCU controller II with the state real-time informing of current speed-sensitive switch array, MCU controller II sends to MCU controller I to the up-to-date switching command of user's operating platform user, and I directly carries out associative operation by the MCU controller.
The coding module control that the speed-sensitive switch array is made up of MCU controller I and CPLD chip, MCU controller I provides n position control index signal, this n position index signal is as the input of CPLD chip, in the CPLD chip, use the decoding scheme module of VHDL language design, with n position index signal interpretation becoming N road gating signal, N=2
n, the speed-sensitive switch array is controlled.
As shown in Figure 2, the speed-sensitive switch array can be expanded N bar computing machine link, N=2
nThe difference speed-sensitive switch CE of N computing machine chain route speed-sensitive switch array with end, each one of computing machine chain route has the difference speed-sensitive switch chip TS3DV416 control of 4 pairs of difference speed-sensitive switches, wherein 1 pair of difference speed-sensitive switch is used for the transmission of digital control signal, and other 3 pairs of difference speed-sensitive switches are used for the transmission of video simulating signal; This difference speed-sensitive switch chip bandwidth can reach more than the 800MHZ; Difference speed-sensitive switch chip is provided with gating signal, and when difference speed-sensitive switch chip during by gating, input and output are connected; When difference speed-sensitive switch chip was cut off, output kept high-impedance state; Whole speed-sensitive switch array is made of N such difference speed-sensitive switch chip part just, has formed N and has selected 1 multiplexed formula structure; Every group by the end of the controlled computer vision signal of gating, be connected with capacitance-resistance Signal Matching network, eliminate the signal reflex and the common mode interference of each controlled computer link.
Because the vision signal of target controlled computer is encoded as 3 pairs of differential signals and transmits on netting twine, also have control signals such as mouse, keyboard to need transmission in addition, so 4 pairs of difference speed-sensitive switches of the difference speed-sensitive switch chip of this speed-sensitive switch array just in time satisfy the transmission needs.In addition, the bandwidth of 800MHZ becomes the necessary guarantee of transmission of video signals quality.
Each controlled computer link max cap. 127 controlled computers of can connecting, the high speed handoff technique of control desk has carried out the expansion of N road, N=2 to the controlled computer link
n, making system possess quantity is the huge monitoring density of N*127 controlled computer.
As shown in Figure 3, be the gating signal generation mechanism of speed-sensitive switch array, be that example describes with expansion 16 tunnel serial KVM systems, be the fundamental construction gate logic with a CPLD chip.Wherein, A0, A1, A2, A14 are input signal, are produced by MCU controller I; CS0～CS15 is the output gating signal, and promptly this circuit is one 16 and selects 1 code translator.A0, A1, A2, the various combination one of A14 has 16 kinds, so circuit can guarantee that at any time output signal CS0～CS15 only has one to be in effective current potential, i.e. strobe state.This gating signal is connected to difference speed-sensitive switch chip shown in Figure 2, and promptly whether the gating of this controlled computer link of may command.If system need expand more multicomputer link, then to revise this decoding scheme and get final product, the programmability of the CPLD chip system that makes is very easy to expansion.74138 is code translators of 3 to 8 that decoding scheme module in the CPLD chip is used among Fig. 3.
Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (5)
1. the extendible KVM supervisory system of high density comprises control desk and controlled computer, and control desk control controlled computer is characterized in that many controlled computers of a control desk control; All be connected with a Computer Interface Module on every controlled computer, controlled computer links to each other by mouse lines, keyboard chord and video line with Computer Interface Module; To surpass the series connection of 5 class netting twines, form a controlled computer link between a plurality of Computer Interface Modules, each bar controlled computer link is connected to control desk; The user monitors and operates controlled computer by control desk; Computer Interface Module arrives control desk with the video signal transmission of controlled computer, and sends mouse, the keyboard action signal that control desk sends to controlled computer; Control desk adopts the high speed handoff technique, can expand N bar controlled computer link, N=2
nUser's operating platform is external local mouse, keyboard, a display of control desk, with the OSD menu as human-computer interaction interface, the OSD menu provides the channel selecting tabulation, the user can select to carry out switching between each controlled computer link by keyboard, and certain in respective link controlled computer equipment is carried out control operation.
2. the extendible KVM supervisory system of a kind of high density according to claim 1, it is characterized in that control desk comprises the speed-sensitive switch array, the coding module that MCU controller I and CPLD chip are formed, the OSD special chip, MCU controller II, MCU controller I connects the CPLD chip, the CPLD chip connects the speed-sensitive switch array, MCU controller II connects the OSD special chip, MCU controller I is connected with MCU controller II, MCU controller II connects the external local mouse of control desk, keyboard, the OSD special chip connects the external local display of control desk, and the speed-sensitive switch array connects the controlled computer link.
3. the extendible KVM supervisory system of a kind of high density according to claim 2, it is characterized in that the OSD special chip produces the display frame of OSD menu operation, the control end of OSD chip and Data Source all are by MCU controller II, carry out data communication by the RS232 interface between MCU controller I and the MCU controller II, MCU controller I gives MCU controller II with the state real-time informing of current speed-sensitive switch array, MCU controller II sends to MCU controller I to the up-to-date switching command of user's operating platform user, and I directly carries out associative operation by the MCU controller; The coding module control that the speed-sensitive switch array is made up of MCU controller I and CPLD chip, MCU controller I provides n position control index signal, this n position index signal is as the input of CPLD chip, in the CPLD chip, use the decoding scheme module of VHDL language design, with n position index signal interpretation becoming N road gating signal, N=2
n, the speed-sensitive switch array is controlled.
4. according to claim 1, the extendible KVM supervisory system of 2 or 3 described a kind of high density, it is characterized in that the speed-sensitive switch array can expand N bar computing machine link, N=2
nThe difference speed-sensitive switch CE of N computing machine chain route speed-sensitive switch array with end, each one of computing machine chain route has the difference speed-sensitive switch chip TS3DV416 control of 4 pairs of difference speed-sensitive switches, wherein 1 pair of difference speed-sensitive switch is used for the transmission of digital control signal, and other 3 pairs of difference speed-sensitive switches are used for the transmission of video simulating signal; This difference speed-sensitive switch chip bandwidth can reach more than the 800MHZ; Difference speed-sensitive switch chip is provided with gating signal, and when difference speed-sensitive switch chip during by gating, input and output are connected; When difference speed-sensitive switch chip was cut off, output kept high-impedance state; Whole speed-sensitive switch array is made of N such difference speed-sensitive switch chip part just, has formed N and has selected 1 multiplexed formula structure; Every group by the end of the controlled computer vision signal of gating, be connected with capacitance-resistance Signal Matching network, eliminate the signal reflex and the common mode interference of each controlled computer link.
5. the extendible KVM supervisory system of a kind of high density according to claim 1, it is characterized in that each controlled computer link max cap. 127 controlled computers of can connecting, the high speed handoff technique of control desk has carried out the expansion of N road, N=2 to the controlled computer link
n, making system possess quantity is the huge monitoring density of N*127 controlled computer.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279654A (en) * | 2011-08-25 | 2011-12-14 | 浪潮电子信息产业股份有限公司 | Method for realizing keyboard in keyboard, video and mouse (KVM) all-in-one machine calling on screen display (OSD) menu of display |
| CN102932647A (en) * | 2012-10-31 | 2013-02-13 | 浪潮集团有限公司 | Method for realizing simultaneous remote multi-channel media redirection of KVM (Keyboard & Video & Mouse) |
| CN103631658A (en) * | 2013-11-25 | 2014-03-12 | 山东超越数控电子有限公司 | Blade server KVM switching and cascade solution |
| CN103744524A (en) * | 2014-01-18 | 2014-04-23 | 浪潮电子信息产业股份有限公司 | Novel KVM (K virtual machine) designing method |
| CN105045408A (en) * | 2015-07-13 | 2015-11-11 | 山东超越数控电子有限公司 | Notebook computer with KVM (Keyboard Video Mouse) keyboard and mouse and KVM switching method for notebook computer |
| CN107748626A (en) * | 2017-10-31 | 2018-03-02 | 北京计算机技术及应用研究所 | The switching of PS/2 keyboard and mouses and monitoring device based on programmable system on chip |
| CN108076083A (en) * | 2016-11-10 | 2018-05-25 | 上海贝锐信息科技股份有限公司 | A kind of KVM switch long-range control method and system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279654A (en) * | 2011-08-25 | 2011-12-14 | 浪潮电子信息产业股份有限公司 | Method for realizing keyboard in keyboard, video and mouse (KVM) all-in-one machine calling on screen display (OSD) menu of display |
| CN102932647A (en) * | 2012-10-31 | 2013-02-13 | 浪潮集团有限公司 | Method for realizing simultaneous remote multi-channel media redirection of KVM (Keyboard & Video & Mouse) |
| CN103631658A (en) * | 2013-11-25 | 2014-03-12 | 山东超越数控电子有限公司 | Blade server KVM switching and cascade solution |
| CN103744524A (en) * | 2014-01-18 | 2014-04-23 | 浪潮电子信息产业股份有限公司 | Novel KVM (K virtual machine) designing method |
| CN105045408A (en) * | 2015-07-13 | 2015-11-11 | 山东超越数控电子有限公司 | Notebook computer with KVM (Keyboard Video Mouse) keyboard and mouse and KVM switching method for notebook computer |
| CN105045408B (en) * | 2015-07-13 | 2017-12-08 | 山东超越数控电子股份有限公司 | A kind of notebook computer and its KVM switching methods with KVM key mouses |
| CN108076083A (en) * | 2016-11-10 | 2018-05-25 | 上海贝锐信息科技股份有限公司 | A kind of KVM switch long-range control method and system |
| CN107748626A (en) * | 2017-10-31 | 2018-03-02 | 北京计算机技术及应用研究所 | The switching of PS/2 keyboard and mouses and monitoring device based on programmable system on chip |
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|---|---|
| CN101739144B (en) | 2014-12-17 |
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