CN2270992Y

CN2270992Y - Shared device of microcomputer dual processor real-time backup device

Info

Publication number: CN2270992Y
Application number: CN 95245199
Authority: CN
Inventors: 郭富
Original assignee: XINWEI COMPUTER TECHNOLOGY DEVELOPMENT Co SHAANXI
Current assignee: XINWEI COMPUTER TECHNOLOGY DEVELOPMENT Co SHAANXI
Priority date: 1995-08-24
Filing date: 1995-08-24
Publication date: 1997-12-17
Anticipated expiration: 2005-08-24

Abstract

The utility model relates to a shared device of a microcomputer dual processor real-time backup device, which comprises a main frame terminal converting interface. The main frame terminal converting interface converts a signal and then selects a main running main frame through a switching control circuit, and then the signal is conveyed to a terminal port through a terminal converting interface; the signal output by the terminal port is respectively conveyed to a first main frame and a second main frame through the terminal converting interface and the main frame terminal converting interface. The utility model can rapidly and reliably be switched to a standby main frame through the shared device when the main frame fails.

Description

The back up in realtime shared device of device of microcomputer two-shipper

The utility model relates to the back up in realtime shared device of device of a kind of microcomputer two-shipper.

Since entering bank, the UNIX/XENIX multi-user operating system participates in business processing, since the management, the centralized network system of various ways---system of savings mothers and sons institute, the a tractor serves several purposes system, generalized information management system or the like, with its small investment, instant effect, characteristics such as use and management is convenient are used widely in bank, but there is a maximum drawback in this centralized network system, the running status that is whole network places one's entire reliance upon open main frame (as all kinds of 386,486,586 etc.) running status, when a machine breaks down, whole network is all in paralyzed state, this will make the very strong counter service disposal system of the such real-time of bank can't operate as normal, for this reason, people have taked various safety practices again, as:

1, adopt flexible plastic disc, tape to do data backup.The sheerly data backup of this scheme, though easy to use, cost is low, but effect is very little concerning total system, no matter is that computer hardware or software break down, and total system still can't operate as normal, and backed up data all is the historical data of the previous day, and the data on the same day still might be lost.

2, adopt mirrored disk to do data backup.This scheme is of a hard disk data to be made to back up in realtime, and it can only solve the dangerous influence that little local fault causes total system, and when other hardware that removes hard disk and software when computing machine broke down, total system still can't operate as normal.

3, adopt guest machine to do cold standby.This scheme is to make guest machine with an other main frame, with floppy disk or tape data day every day is poured on the guest machine after eventually, shortcoming is can not do data to back up in realtime, when hostdown, need take a long time system done and reconnect, and will do for supplement the work of doing the same day.

4, adopt the dual-machine communication mode to do two-node cluster hot backup.Though this scheme has been accomplished data real time backup, both sides' main frame all needs to move communication program in addition, takies the working time of host CPU, reduced the main frame travelling speed, bigger to the performance impact of total system, and, when main operation hostdown, also need take a long time and reconnect.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and the shared device that provides a kind of microcomputer two-shipper to back up in realtime device, use it in the back-up device, no matter the fault of what character takes place in main frame, all can switch to quickly and easily on the backup host by switch, can make correction data usefulness by shared device two main frame direct interconnection, simple in structure, stable and reliable operation.

The purpose of this utility model can reach by following measure:

The back up in realtime shared device machine of device of a kind of microcomputer two-shipper is characterized in that:

Shared device of the present utility model (3) can comprise the host side translation interface (10) that joins with I main frame mouth (7) and II main frame mouth (8), its output connects the input port of terminal port (15) through control switching circuit (11) terminal translation interface (14), the output port of terminal port (15) connects terminal translation interface (13), and the output of terminal translation interface (13) is joined with the input port of I main frame mouth (7) and II main frame mouth (8) respectively through host side translation interface (9).

Between the host side translation interface (10) and control switching circuit (11) of shared device of the present utility model (3), can be provided with direct-connected switching (16) between terminal translation interface (13) and the host side translation interface (9).

Host side translation interface of the present utility model (10) can constitute by the integrated package U4 that joins with I main frame mouth (7) with integrated package U5 that II main frame mouth (8) joins; Described terminal translation interface (14) is made of the integrated package U7 that joins with terminal port (15) input end; Described terminal translation interface (13) is made of the integrated package U3 that joins with terminal port (15) output terminal; Described host side translation interface (9) is made of the integrated package U1, the U2 that join with I main frame mouth (7) and II main frame mouth (8) input end respectively.

Control switching circuit of the present utility model (11) can comprise integrated package U6, the output terminal of its input termination integrated package U4, U5, and the input end of its output termination integrated package U7, change-over switch K1 is connected to control end 1 pin of integrated package U6.

Direct-connected switching of the present utility model (16) can be made of integrated package U9～U15, the input end of the input termination U3 of described U9～U10, the input end of the output termination U1 of U9, the input end of the output termination U2 of U10, end is gone in the output of the input termination U12 of U11, termination U12 is gone in the output of U11, the input end of U6, the output termination U1 of U12, the input end of U2, the output terminal of the input termination U14 of U13, the output termination U1 of U13, the input end of U2, the input end of the output termination U13 of U14, the input termination U4 of U14, the output terminal of U5, the input termination U4 of U15, the output terminal of U5, the input end of the output termination U6 of U15,1 end of K switch 2 joins with two control pins of U11 and the control end of U12～U14 respectively, 3 ends of K switch 2 respectively with U9, U10, two control pins in addition of the control end of U15 and U11 join.

The accompanying drawing drawing is described as follows:

Fig. 1 is for using the back up in realtime structural representation of device of microcomputer of the present utility model.

Fig. 2-3 is the theory diagram of the utility model shared device

Fig. 4 is the circuit theory diagrams of a port of the utility model shared device

Fig. 5 is the circuit theory diagrams during direct-connected switch for the utility model is provided with

The utility model is described in further detail below in conjunction with accompanying drawing:

The utility model is based on a kind of principle of parallel work-flow, the multi-user's main frame that is about to two same model, identical configurations and identical version operating system and application system be housed links together by shared device and terminal, every station terminal receives only the wherein output of a main operation main frame, and send data or order to two main frames simultaneously, two main frames simultaneously and the behavior terminal user service is provided, thereby realize the function that two-shipper is backed up in realtime.When main operation main frame breaks down, only need operation one gauge tap, main running status can be switched on another main frame, referring to Fig. 1, I main frame 1 is respectively two with II main frame 2, and model is identical, configuration is identical, move the multi-user operating system of identical version and 386,486 or 586 microcomputers of application system, also can be minicomputer, server or the workstation etc. of operation multi-user operating system.Local terminal 4 joins by shared device 3 and I main frame 1 and II main frame 2, and remote terminal 6 joins by shared device 3 and I main frame 1 and II main frame 2 through communication apparatus 5 again.Local terminal 4 and remote terminal 6 can be all serial devices that meet RS-232, as ATM (Automatic Teller Machine), point-of-sale terminal etc.Communication apparatus 5 can be a modulator-demodular unit, line driver or wireless telecommunications system etc.Fig. 2 is the theory diagram of the utility model shared device, I main frame mouth 7 and II main frame mouth 8 join by RS-232 serial port and I main frame 1 and II main frame 2 respectively, signal by I

main frame mouth

7 and 8 inputs of II main frame mouth becomes Transistor-Transistor Logic level by host side translation interface 10 with the RS-232 level conversion, deliver to control switching circuit 11 simultaneously, selection according to the user, the input signal of main operation main frame is delivered to terminal translation interface 14, Transistor-Transistor Logic level is converted to the RS-232 level again and deliver to terminal port 15, terminal port is connected with terminal by the RS-232 serial port.The input signal of terminal port 15 becomes Transistor-Transistor Logic level by terminal translation interface 13 with the RS-232 level conversion, Transistor-Transistor Logic level is converted to the RS-232 level through host side translation interface 9 again, is sent to I main frame mouth 7 and II main frame mouth 8 respectively.The state that display 12 can be used for I main frame mouth 7 and II main frame mouth 8 shows.The utility model can be designed to the product of different I/O number of ports as required, an I/O interface of shared device 3 also can be used for finishing the direct-connected function of two main frames, at this moment must increase direct-connected switching 16, the output that is host side translation interface 10 is joined with switch controller 11 through direct-connected switching 16, terminal translation interface 13 joins with host side translation interface 9 through direct-connected switching 16, sees Fig. 3.Fig. 4 is the circuit theory diagrams of a port of the utility model shared device.Signals such as RX, the CTS of I

main frame

1 and 2 outputs of II main frame, DSR, respectively by I

main frame mouth

7 and 8 inputs of II main frame mouth, the host side translation interface 10 that constitutes through integrated package U4, U5 becomes Transistor-Transistor Logic level with the RS-232 level conversion respectively, the control switching circuit 11 that warp let-off K switch 1 and integrated package U6 constitute.When K switch 1 closure, the signal of I main frame mouth 7 inputs is delivered to the terminal translation interface 14 that integrated package U7 constitutes; When K1 disconnects, the signal of II main frame mouth 8 inputs is delivered to the terminal translation interface 14 that integrated package U7 constitutes, integrated package U7 converts Transistor-Transistor Logic level to the RS-232 level, is sent to terminal port 15.RX, CTS, signals such as DSR, CD by terminal port 15 inputs, terminal translation interface 13 through integrated package U3 formation, become Transistor-Transistor Logic level to be sent to the host side translation interface 9 that integrated package U1～U2 constitutes the RS-232 level conversion, again Transistor-Transistor Logic level is converted to RS-235 level input I main frame mouth 7, II main frame mouth 8.Integrated package U1～U2 and U7 in the present embodiment can adopt MC1488, and integrated package U3～U5 all can adopt MC1489, integrated package U1～U5 and U7 also can adopt respectively 75188,75189 or other RS-232 interface chip replace; Integrated package U6 can adopt 74LS157 or 74LS257 etc.The duty of I main frame mouth 7, II main frame mouth 8 can show that U8 can adopt MC1413 by the display 12 that integrated package U8 constitutes.Referring to Fig. 5, when need the utility model shared device has direct-connected handoff functionality between two main frames, need only the host side translation interface 10 outputs signal and get final product through direct-connected switching 16 control outputs by the signal of terminal translation interface 13 outputs, direct-connected switching 16 is made of collection face piece U9～U15, it all can adopt 74LS125, when 2,3 junction closures of K switch 2, the principle of work and power of present embodiment is with embodiment illustrated in fig. 4, when 2,1 junction closure of K switch 2, has direct-connected function between two main frames, i.e. recoverable data between two main frames.During use, open shared device 3, and master cock K1, main operation main frame selected; Open terminal and communication apparatus; Open backup host, make it reach the application system picture that will move and wait for terminal operation; Open main operation main frame, make it also reach the application system picture that will move and wait for operation; Do normal running from terminal; In the course of the work, break down as main operation main frame, can be by the gauge tap K1 on the fortune shared device, main running status is switched to guest machine, turn off main operation main frame and keep in repair, repair the back and wait day eventually the back to open a main operation main frame, data are refunded on the backup host and can continue concurrent working; After day is whole,, can press the gauge tap K2 on the shared device, two main frames directly be linked, and on two main frames, move collate program respectively as doing proof-reading.

The utility model compared with prior art has following advantage:

The utility model connects the bridge of terminal with shared device jointly as two main frames, It does not have impact to system running speed; No matter the fault of what character takes place in main frame, The terminal use can pass through shared device, and is passed through quickly and easily switching over On backup host, for the terminal use, can be described as obtained hundred-percent standby Part; Two main frame direct interconnection interfaces only need pass through switch as two main frame correction data usefulness Conversion does not take special host port; Can show two host terminal communications by display The duty of port; Shared device adopts modular organization, and every can connect 8 RS-232 Interface, but according to connecting the number of terminals flexible configuration, every pair of port is separate; This practicality New structure is simple, and cost is low, and system run all right is reliable.

Claims

1, a kind of microcomputer two-shipper shared device of device of backing up in realtime is characterized in that:

Described shared device (3) comprises the host side translation interface (10) that joins with I main frame mouth (7) and II main frame mouth (8), its output connects the input port of terminal port (15) through control switching circuit (11) terminal translation interface (14), the output port of terminal port (15) connects terminal translation interface (13), and the output of terminal translation interface (13) is joined with the input port of I main frame mouth (7) and II main frame mouth (8) respectively through host side translation interface (9).

2, the microcomputer two-shipper as claimed in claim 1 shared device of device of backing up in realtime is characterized in that: between the host side translation interface (10) and control switching circuit (11) of described shared device (3), be equipped with direct-connected switching (16) between terminal translation interface (13) and the host side translation interface (9).

3, the microcomputer two-shipper as claimed in claim 1 or 2 shared device of device of backing up in realtime is characterized in that described host side translation interface (10) constitutes by the integrated package U4 that joins with I main frame mouth (7) with integrated package U5 that II main frame mouth (8) joins; Described terminal translation interface (14) is made of the integrated package U7 that joins with terminal port (15) input end; Described terminal translation interface (13) is made of the integrated package U3 that joins with terminal port (15) output terminal; Described host side translation interface (9) is made of the integrated package U1, the U2 that join with I main frame mouth (7) and II main frame mouth (8) input end respectively.

4, the microcomputer two-shipper as claimed in claim 3 shared device of device of backing up in realtime, it is characterized in that: described control switching circuit (11) comprises integrated package U6, the output terminal of its input termination integrated package U4, U5, the input end of its output termination integrated package U7, change-over switch K1 is connected to control end 1 pin of integrated package U6.

5, the back up in realtime shared device of device of microcomputer two-shipper as claimed in claim 2, it is characterized in that: described direct-connected switching (16) is made of integrated package U9～U15, the input end of the input termination U3 of described U9～U10, the input end of the output termination U1 of U9, the input end of the output termination U2 of U10, end is gone in the output of the input termination U12 of U11, termination U12 is gone in the output of U11, the input end of U6, the output termination U1 of U12, the input end of U2, the output terminal of the input termination U14 of U13, the output termination U1 of U13, the input end of U2, the input end of the output termination U13 of U14, the input termination U4 of U14, the output terminal of U5, the input termination U4 of U5, the output terminal of U5, the input end of the output termination U6 of U15,1 end of K switch 2 join with two control pins of U11 and the control end of U12～U14 respectively, 3 ends of K switch 2 respectively with U9, U10, two control pins in addition of the control end of U15 and U11 join.