CN103809538A - Server computer remote control system based on CAN bus - Google Patents
Server computer remote control system based on CAN bus Download PDFInfo
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- CN103809538A CN103809538A CN201210447484.5A CN201210447484A CN103809538A CN 103809538 A CN103809538 A CN 103809538A CN 201210447484 A CN201210447484 A CN 201210447484A CN 103809538 A CN103809538 A CN 103809538A
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Abstract
The invention discloses a server computer remote control system based on the CAN bus. The server computer remote control system is composed of a host node and a slave node. The host node is composed of a number-zero node communication module, a network switch and a computer terminal. The slave node is composed of a number-one node communication module and a server computer. The server computer remote control system is characterized in that the number-zero node communication module comprises a central processing unit, a CAN communication module and an Ethernet communication module, the number-one node communication module comprises a central processing unit, a CAN communication module, a USB communication module and an on/off control unit; the number-zero node communication module is connected with the computer terminal through the network switch, the number-one node communication module is connected with the server computer through a USB cable and a switch connecting line, and the host node is connected with the slave node through a CAN bus cable. The server computer remote control system of the invention has the following advantages that by using the computer terminal to perform remote control on the server computer, manpower resources required in the server computer management and maintenance process can be reduced.
Description
[technical field]
The present invention relates to computer realm, particularly relate to a kind of server computer tele-control system based on CAN bus.
[background technology]
Server computer is a kind of high-performance computer, and it serves to access and the processing that each network terminal computer provides data and information as network node.Along with develop rapidly and the day by day increase of people to network demand of computer networking technology, needed server computer quantity is more and more, thereby hundreds of are occurred having placed, the medium-and-large-sized server computer machine room of even thousands of station server computers, thereby administering and maintaining also of server computer become and become increasingly complex.Because always needing whole day, server computer runs without interruption, in the time causing server computer out of service due to faults such as softwares, the actions such as the technician of management server computer need to arrange server computer immediately and restart, now, technician just need to arrive the machine room of special service device computer, find out the server computer that this breaks down, this server computer is operated, this has brought very big inconvenience to technician.Based on above-mentioned defect, we need a kind of tele-control system that can the server computer of One's name is legion in server computer machine room be managed and be safeguarded, technician can be started shooting to server computer by terminal long-range, or shutdown or restart etc. and to administer and maintain operation.
[summary of the invention]
The object of the invention is to overcome above-mentioned defect, a kind of server computer tele-control system based on CAN bus is provided.
The object of the present invention is achieved like this: a kind of server computer tele-control system based on CAN bus, it is made up of host node 100 and subordinate computer node 200, host node 100 is by No. 0 node communication module 110, the network switch 130 and terminal 120 form, subordinate computer node 200 is made up of No. 1 node communication module 210 and server computer 220, it is characterized in that: described No. 0 node communication module comprises central processing unit (1), CAN communication module (2), ethernet communication module (3), described No. 1 node communication module comprises central processing unit (1), CAN communication module (2), usb communication module (4) and switch control unit (5), described No. 0 node communication module 110 is connected by the network switch 130 with terminal 120, described No. 1 node communication module 210 is connected with switch connecting line 240 by USB cable 230 with server computer 220, between described host node 100 and subordinate computer node 200, connect by CAN bus cable 300, described terminal 120 sends steering order, this steering order is via the network switch 130, No. 0 node communication module 110, CAN bus cable 300 arrives node communication module 210 No. 1, and by USB cable 230 or switch connecting line 240, server computer 220 is controlled.
In said structure, described server computer 220 refers to a kind of high-performance computer that the network service such as access and processing of data and information can be provided to each network terminal.
In said structure, the described network switch 130 refers to that one can be connected with many computing machines or the network terminal, forms the equipment of a LAN (Local Area Network).
In said structure, described computing terminal 120 refers to a kind of common computer that can be connected in LAN (Local Area Network).
In said structure, described USB cable 230 refers to the connecting line for connecting usb host end and equipment end.
In said structure, described switch connecting line 240 can adopt the plain conductor with conducting function.
In said structure, described central processing unit (1) is 8,16 or 32 s' microprocessor.
In said structure, described CAN communication module (2) is by CAN bus controller, CAN buses isolator, CAN bus driver and CAN bus interface composition.
In said structure, described ethernet communication module (3) is made up of ethernet controller and Ethernet interface.
In said structure, described usb communication module (4) is made up of USB controller and USB interface, and it is operated in USB HID pattern, is configured to a USB keyboard equipment.It is controlled described server computer 220 to the mode of described server computer 220 to send keyboard key.
In said structure, the switching on and shutting down button of described switch control unit (5) and above-mentioned server computer 220 is connected by switch connecting line 240 with reboot button, for server computer 220 is started shooting or shut down or restarts control.
Beneficial effect of the present invention is: technician can be by terminal 120 from the long-range key input of server computer 220 being carried out to keyboard, or to server computer 220 operation such as start shooting or shut down or restart, greatly improve convenience and dirigibility that server computer 220 is managed and safeguarded, saved server computer 220 is managed and safeguard needed human resources.
[accompanying drawing explanation]
Fig. 1 is the structured flowchart of the specific embodiment of the invention;
Fig. 2 is the system connected mode figure of the specific embodiment of the invention;
Fig. 3 is No. 0 node communication modular structure block diagram of the specific embodiment of the invention;
Fig. 4 is No. 1 node communication modular structure block diagram of the specific embodiment of the invention;
Fig. 5 is the CAN communication module circuit diagram of the specific embodiment of the invention;
Fig. 6 is the usb communication module circuit diagram of the specific embodiment of the invention;
Fig. 7 is the switch control unit circuit diagram of the specific embodiment of the invention;
[embodiment]
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in detail.
As shown in Figure 1, the present invention relates to a kind of server computer tele-control system based on CAN bus, it is made up of host node 100 and subordinate computer node 200, host node 100 is by No. 0 node communication module 110, the network switch 130 and terminal 120 form, subordinate computer node 200 is made up of No. 1 node communication module 210 and server computer 220, it is characterized in that: described No. 0 node communication module comprises central processing unit (1), CAN communication module (2), ethernet communication module (3), described No. 1 node communication module comprises central processing unit (1), CAN communication module (2), usb communication module (4) and switch control unit (5), described No. 0 node communication module 110 is connected by the network switch 130 with terminal 120, described No. 1 node communication module 210 is connected with switch connecting line 240 by USB cable 230 with server computer 220, between described host node 100 and subordinate computer node 200, connect by CAN bus cable 300, described terminal 120 sends steering order, this steering order is via the network switch 130, No. 0 node communication module 110, CAN bus cable 300 arrives node communication module 210 No. 1, and by USB cable 230 or switch connecting line 240, server computer 220 is carried out to Long-distance Control.
Fig. 2 is the system connected mode figure of the specific embodiment of the invention.CAN bus be a kind of much much more main from bus structure, in CAN bus, arbitrary node can be at any time sends information to other CAN node in CAN bus network on one's own initiative, between each CAN node, can realize free communication.In Fig. 2, host node 100 and multiple subordinate computer node 200 link together by CAN bus cable.According to CAN bus protocol, up to a hundred subordinate computer nodes 200 can link together and form a CAN bus network with host node 100.In addition, in host node 100, many terminals 120 are connected with No. 0 node communication module 110 by the network switch 130, and 120 and No. 0 node communication module 110 of many terminals has formed a LAN (Local Area Network) (LAN) jointly.The system connected mode of the specific embodiment of the invention makes any terminal 120 in whole system all can carry out Long-distance Control to any station server computer 220 in system.In Fig. 2, the two ends of two differential signals of CAN bus are connected with terminal resistance, make it to mate with the impedance phase of CAN bus cable, to guarantee the signal integrity letter of CAN bus transfer.
Fig. 3 is No. 0 node communication modular structure block diagram in the specific embodiment of the invention, it comprises central processing unit (1), CAN communication module (2), ethernet communication module (3), it plays the effect that connects calculation machine terminal 120 and CAN bus cable 300.
Fig. 4 is No. 1 node communication modular structure block diagram in the specific embodiment of the invention, it comprises central processing unit (1), CAN communication module (2), usb communication module (4) and switch control unit (5), it is communicated by letter with host node 100 by CAN communication module (2), and by usb communication module (4) and switch control unit (5), server computer 220 is controlled.
Above-mentioned central processing unit (1) can adopt 8,16 or 32 s' microprocessor.In the specific embodiment of the invention, selected central processing unit (1) is the 32-bit microprocessor STM32F107VCT based on Cortex-M3 kernel, its inner integrated CAN bus controller, the media access controller (MAC) of USB controller and ethernet controller, is responsible for various data to process and the conversion of form.
Above-mentioned CAN communication module (2) is by CAN bus controller, CAN buses isolator, CAN bus driver and CAN bus interface composition.CAN bus controller for generation of or receive and meet the signal of CAN bus protocol, make central processing unit (1) to carry out data communication with CAN bus; The level signal that CAN bus driver is used for CAN bus controller to produce is converted to differential signal, or differential signal is converted to the discernible level signal of CAN bus controller; CAN buses isolator is for the electrical connection between isolated can bus controller and CAN bus driver, make in described tele-control system, the server computer 220 in terminal 120 and subordinate computer node 200 in host node 100 is independent mutually in electrical specification; CAN bus interface is for connecting the object medium CAN bus cable of CAN bus, between described host node 100 and subordinate computer node 200, connect by CAN bus cable 300, CAN bus cable 300 can adopt two handsome line cables or concentric cable etc. to meet the cable of CAN bus communication requirement.
Fig. 5 is the CAN communication module circuit diagram of the specific embodiment of the invention, in this specific embodiment, CAN bus controller adopts the inner integrated CAN bus controller of central processing unit (1) STM32F107VCT, CAN buses isolator adopts light lotus root isolating device 6N137, CAN bus driver adopts TJA1050T chip, and CAN bus interface adopts the contact pin of four pins, and it comprises CAN signal ground, CAN power supply, CAN differential signal line CANH and tetra-signals of CAN differential signal line CANL.In Fig. 5, U20 and U21 are CAN buses isolators, and U22 is CAN bus driver, and J23 is CAN bus interface.Pin on the CAN bus controller of U20 and U21 and central processing unit (1) is connected, and CAN bus signals, after the isolation of light lotus root, is connected with U22, and U22 converts differential signal to CAN signal, is connected to J23.
Above-mentioned ethernet communication module (3) is made up of ethernet controller and Ethernet interface, wherein ethernet controller comprises media access controller (MAC) and physical interface transceiver (PHY) two parts, and Ethernet interface comprises Ethernet isolating transformer and RJ45 Ethernet joint.In the specific embodiment of the invention, the media access controller (MAC) of ethernet controller adopts the inner integrated Ethernet media access controller (MAC) of central processing unit (1) STM32F107VCT, Ethernet physical interface transceiver (PHY) adopts DM9161AEP chip, and it is connected with the Ethernet media access controller (MAC) on central processing unit (1) by MII bus interface; Ethernet interface adopts HR911105A, and it has comprised Ethernet isolating transformer and RJ45 network joint, and ethernet communication module (3) is connected on the network switch 130 by this RJ45 network joint.
Above-mentioned usb communication module (4) is made up of USB controller and USB interface.In the specific embodiment of the invention, USB controller adopts the inner integrated USB controller of central processing unit (1) STM32F107VCT.
Fig. 6 is the usb communication module circuit diagram of the specific embodiment of the invention, in figure, J30 is USB interface, its differential signal line DM is connected with the USB controller pin on central processing unit (1) by resistance with differential signal line DP, simultaneously, on USB interface J30, also comprise USB ground pin, and 5V power pin.In subordinate computer node 200, usb communication module (4) is connected with server computer 220 by the USB cable 230 being connected on USB interface J30.
Above-mentioned switch control unit (5) is made up of ON-OFF control circuit and switch connecting contact pin.ON-OFF control circuit can adopt relay or metal-oxide-semiconductor or triode.In the specific embodiment of the invention, adopt metal-oxide-semiconductor composition on-off circuit.This switch control unit (5) is connected to by switch connecting line 240 on the shift knob and reset button of server computer 220, can start shooting to server computer 220, or shutdown, or reboot operation.Switch connecting line 240 can adopt the plain conductor with conducting function.
Fig. 7 is the switch control unit circuit diagram of the specific embodiment of the invention, and in figure, Q40 and Q41 are that model is the NMOS pipe of 2N7002, and J42 is the contact pin for connecting valve connecting line 240.The 1st pin of Q40 and Q41 is connected with the IO pin of central processing unit (1), and the 2nd pin of Q40 and Q41 is connected with signal ground, and it is upper to be connected to switch connecting contact pin J42, and the 3rd pin of Q40 and Q41 is also connected respectively on switch connecting contact pin J42.Switch connecting contact pin J42 is connected respectively on the switching on and shutting down button and reboot button of server computer 220 by switch connecting line 240.In the time that central processing unit (1) need to be started shooting to server computer 220, it exports high level by its IO pin on the 1st pin of Q40, now, the 2nd pin of Q40 and the 3rd pin conducting, be equivalent to manually supress the start button of server computer 220, thereby realized the boot action to server computer 220; In the time that central processing unit (1) need to be restarted server computer 220, it exports high level by its IO pin on the 1st pin of Q41, now, the 2nd pin of Q41 and the 3rd pin conducting, be equivalent to manually supress the reboot button of server computer 220, thereby realized restarting server computer 220.Central processing unit (1) completes after required control action, in the 1st pin output low level of Q40 and Q41, now, the 2nd pin of Q40 and Q41 and the 3rd no longer conducting of pin, thereby the control that has discharged the switching on and shutting down to server computer 220 or restarted.
In the specific embodiment of the invention, the USB controller of usb communication module (4) is operated in USB HID pattern, and it is configured to a USB keyboard equipment.No. 1 node communication module 210 in subordinate computer node 200 is as the USB keyboard of server computer 220, and it realizes the control to server computer 200 by server computer 220 is sent to keyboard key.Server computer 200 searches out usb communication module (3) by enumerating USB device, then adds the keyboard peripheral hardware of this USB communication module (3) as its standard.
In the time need to controlling server computer 220 by the usb communication module (4) in subordinate computer node 200, terminal 120 in host node 100 sends needed keyboard key to 0 node communication module 110 by ethernet communication module (3), No. 0 node communication module 110 outputs to this keyboard key on the object medium CAN bus cable 300 of CAN bus by its CAN bus interface, No. 1 node communication module 210 in subordinate computer node 200 receives after this keyboard key code value, by its USB communication module (5), this keyboard key code value is sent to server computer 220, server computer 220 makes corresponding response according to this keyboard key code value, thereby realize terminal 120 in host node 100 Long-distance Control to the server computer 220 in subordinate computer node 200.As an example in the specific embodiment of the invention, the key value that terminal 120 in host node 100 can send tri-keyboards of CTRL+ALT+DEL is to the server computer 220 in subordinate computer node 200, server computer 220 is received after this keyboard key code value, carries out and the corresponding computer homing action of tri-keyboards of CTRL+ALT+DEL.
When starting shooting to server computer 220 by the switch control unit in subordinate computer node 200 (5), or shutdown, or reset while control, terminal 120 in host node 100 sends corresponding instruction to 0 node communication module 110 by ethernet communication module (3), No. 0 node communication module 110 outputs to this instruction on the object medium CAN bus cable 300 of CAN bus by its CAN bus interface, No. 1 node communication module 210 in subordinate computer node 200 receives after this instruction, by its switch control unit (5), server computer 220 is carried out to corresponding start, or shutdown, or reboot operation.
In the specific embodiment of the invention, the ethernet communication module (3) in described host node 100 has comprised a web page server.Terminal 120 in host node 100 visits by input the IP address of ethernet communication module (3) in the address field of its web browser the webpage control interface that the server computer 220 in subordinate computer node 200 is controlled.By input keyboard key set code or switching on and shutting down on this webpage control interface, the steering order such as restart, can realize the Long-distance Control to the server computer 220 in subordinate computer node 200.
In the specific embodiment of the invention, in order to guarantee the reliability of Long-distance Control, when host node 100 sends keyboard key or steering order, in the packet of communicating by letter, comprise source address and destination address in CAN bus, and the check code of keyboard key or steering order.CAN communication module receives after keyboard key or steering order at every turn, can first test to these data, after check is correct, just carry out corresponding control operation, in addition, subordinate computer node 200 has also adopted information loopback mode by its CAN communication module (2), and it has received this keyboard key or steering order to inform host node 100.
It is to be noted; the invention is not restricted at the specific embodiment described in instructions; any simple modification that any those skilled in the art do above-mentioned specific embodiment in based on the present invention program, equivalent variations and equivalent transformation, all in protection scope of the present invention.
Claims (7)
1. the server computer tele-control system based on CAN bus, it is made up of host node and subordinate computer node, host node is by No. 0 node communication module, the network switch and terminal composition, subordinate computer node is made up of No. 1 node communication module and server computer, it is characterized in that: described No. 0 node communication module comprises central processing unit, CAN communication module and ethernet communication module, described No. 1 node communication module comprises central processing unit, CAN communication module, usb communication module and switch control unit; Described No. 0 node communication module is connected by the network switch with terminal, described No. 1 node communication module is crossed USB cable with server computer expert and is connected with switch connecting line, between described host node and subordinate computer node, connect by CAN bus cable, described terminal sends steering order, this steering order is via the network switch, No. 0 node communication module, CAN bus cable arrives No. 1 node communication module, and by USB cable or switch connecting line, server computer is controlled.
2. a kind of server computer tele-control system based on CAN bus as claimed in claim 1, is characterized in that: described central processing unit adopts 8,16 or 32 s' microprocessor.
3. a kind of server computer tele-control system based on CAN bus as claimed in claim 1, is characterized in that: described CAN communication module is by CAN bus controller, CAN buses isolator, CAN bus driver and CAN bus interface composition.
4. a kind of server computer tele-control system based on CAN bus as claimed in claim 1, is characterized in that: described ethernet communication module is made up of ethernet controller and Ethernet interface.
5. a kind of server computer tele-control system based on CAN bus as claimed in claim 1, is characterized in that: described usb communication module is made up of USB controller and USB interface.
6. a kind of server computer tele-control system based on CAN bus as claimed in claim 1, is characterized in that: described usb communication module is operated in USB HID pattern, is configured to a USB keyboard equipment.
7. a kind of server computer tele-control system based on CAN bus as claimed in claim 1, is characterized in that: described switch control unit is connected by switch connecting line with reset button with the switching on and shutting down button of described server computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210447484.5A CN103809538A (en) | 2012-11-09 | 2012-11-09 | Server computer remote control system based on CAN bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210447484.5A CN103809538A (en) | 2012-11-09 | 2012-11-09 | Server computer remote control system based on CAN bus |
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| CN103809538A true CN103809538A (en) | 2014-05-21 |
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| CN201210447484.5A Pending CN103809538A (en) | 2012-11-09 | 2012-11-09 | Server computer remote control system based on CAN bus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107896174A (en) * | 2017-11-28 | 2018-04-10 | 深圳市瑞意博科技股份有限公司 | A kind of intelligent medicine-chest master controller and its control method |
| CN108089963A (en) * | 2017-11-27 | 2018-05-29 | 温州大学瓯江学院 | A kind of multi-media classroom computer excess detection method and device |
-
2012
- 2012-11-09 CN CN201210447484.5A patent/CN103809538A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089963A (en) * | 2017-11-27 | 2018-05-29 | 温州大学瓯江学院 | A kind of multi-media classroom computer excess detection method and device |
| CN108089963B (en) * | 2017-11-27 | 2021-03-26 | 温州大学瓯江学院 | Multimedia classroom computer allowance detection method and device |
| CN107896174A (en) * | 2017-11-28 | 2018-04-10 | 深圳市瑞意博科技股份有限公司 | A kind of intelligent medicine-chest master controller and its control method |
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Application publication date: 20140521 |