CN101241383B - Computer main unit supporting multi- hard disk independent startup and its accomplishing method - Google Patents
Computer main unit supporting multi- hard disk independent startup and its accomplishing method Download PDFInfo
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- CN101241383B CN101241383B CN2008100850373A CN200810085037A CN101241383B CN 101241383 B CN101241383 B CN 101241383B CN 2008100850373 A CN2008100850373 A CN 2008100850373A CN 200810085037 A CN200810085037 A CN 200810085037A CN 101241383 B CN101241383 B CN 101241383B
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Abstract
The invention relates to a computer host and a method thereof, specifically is a computer host supporting multi-hard disc independent startup and a method thereof. The invented computer host comprises a computer cabinet with an electric powder, a mainboard and at least two independent hard discs are disposed in the cabinet, a switch control plate is disposed on the cabinet front panel, and is provided with an interface and a switch contact point connecting with the hard disc, the electric powder, and the mainboard respectively; a switch push button is disposed on the front panel of the cabinet and is connected with the switch contact point. The invented method comprised following steps: the switch push button receives the working request; the switch control panel connects the selected hard disc and the host electric powder based on the received request to start the host, and the selected hard disk works. By using the invented configuration design/method, not only the computer storage size is enhanced to make one traditional computer to turn to two computers, but also virus infection or user misoperation of one hard disc (computer) will not affect use of another hard disc (computer).
Description
Technical field
The present invention relates to a kind of main frame Apparatus for () and method therefor, specifically support main frame and its implementation of multi-hard disk independent startup.
Background technology
Along with the application popularization of computer technology, computing machine has become the tool of production, learning tool and converter tools, and it is playing the part of different roles in different occasions or time.Such as computing machine computing machine use as merchandise control of small business, playing the part of the role of the tool of production in the working time; After coming off duty, may become the instrument that people continue educating and learn again on the net; When fatigue, become the converter tools of playing video display, recreation again.
This just requires computing machine can satisfy people's multiple demand, but actual conditions may be such, it requires operating system on Windows Server 2003 as the computing machine of merchandise control, and the database software of specialty is installed, occupy more system resources, strict in security, prevent virus and people's maloperation, be not suitable for online study and amusement.And as the study and the instrument of amusement, people get used under the beautiful interface of Windows Xp, require to calculate that function is surfed the Net, playing games gets final product.Some contradictory problems have so just appearred.
The most basic solution of contradiction is bought second computer, but from considering that economically cost is higher; Consider from work space, taken work space.
The manufacturer is in order to satisfy user's multiple demand at present, generally by improving hard-disk capacity and realizing by software mode realization multiple operating systems, this mode is operated very inconvenient concerning the general user, but also can there be the hidden danger of system crash, more seriously also lose or, also be unfavorable for maintaining secrecy because of maloperation makes file easily for sensitive data because of being caused systemic breakdown by virus infections.
Consequent hard disk secure problem has been ignored by the multiple boot system that realizes by software in the prior art.In order to change drawback of the prior art, a suitching type main frame of supporting the multichannel hard disk independent startup of exigence invention is selected to use for the user that specific demand is arranged.
Summary of the invention
The present invention is in order to solve above-mentioned weak point, provide a kind of simple in structure, easy to operate, have extendability, support the main frame of multi-hard disk independent startup.
In order to realize purpose of the present invention, by the following technical solutions: the main frame of supporting multi-hard disk independent startup, comprise that one has the computer cabinet of power supply, be provided with mainboard in the cabinet, also comprise in the cabinet: at least two independently hard disk and switching control plate that place on the case front panel, switching control plate is provided with interface and the double-throw contact that is connected with hard disk, power supply, mainboard respectively; The front panel of described cabinet is provided with switching push button, and itself and double-throw contact touch, in order to realize choosing hard disk.
Described interface is located at switching control plate on the one side of cabinet inside, comprises the power output interface that is connected with hard disk, the data output interface that is connected with hard disk, the power input interface that is connected with power supply and the Data Input Interface that is connected with mainboard; The another side of switching control plate is provided with double-throw contact; The quantity of switching push button and double-throw contact is equal to the quantity of hard disk respectively.
Also be provided with commutation circuit on the described switching control plate, commutation circuit comprises delay circuit and relay, and delay circuit is made of priority encoder, code translator and time base circuit.
The quantity of described power output interface and data output interface is equal to the quantity of hard disk respectively.
With STAT interface hard disk is example, described power unit has the five core supply sockets of using for hard disk, the socket cable has five lines, color be respectively orange (+3.3V), black (ground connection), red (+5V), black (ground connection), yellow (+12V), power supply is connected with the power input interface of switching control plate by plug.
Another object of the present invention is to, the implementation method of the main frame of this multi-hard disk independent startup is provided, its step comprises:
A) switching push button receives work request;
B) switching control plate connects the hard disk and the host power supply that are selected according to the request that receives, and host-initiated is selected hard disk work.
When carrying out step B, switching control plate keeps being selected hard disk by auto-lock function and is in the state of connecting with host power supply all the time.
Beneficial effect of the present invention is:
1, the present invention is by reasonable structural design (or by adopting implementation method of the present invention), not only improved the memory capacity of computing machine, and in case hard disk because when infective virus or user misoperation, can select other hard disks to use by switching part, so just cut off power supply to this hard disk, just can not influence the normal use of other hard disks or main frame because of this hard-disk system collapse, realize many hard disks independent operation truly.
2, the present invention is installed in switching push button on the cabinet panel, more helps realizing the switching of hard disk, and is simple to operate.
3, of the present invention simple in structure, easy to operate, extensibility is strong.
Description of drawings
Fig. 1 is the structural representation of case front panel of the present invention;
Fig. 2 is a cabinet inside structural representation of the present invention;
Fig. 3 is the connection diagram of the interior basic element of character of cabinet of the present invention and each interface of switching control plate;
Fig. 4 is a commutation circuit schematic diagram of the present invention.
Among the figure, 1, cabinet; 2, power supply; 3, mainboard; 4, hard disk I; 5, hard disk II; 6, switching control plate; 7, power lead; 8, data line; 9, double-throw contact I; 10, double-throw contact II; 11, power input interface; 12, power output interface I; 13, power output interface II; 14, Data Input Interface; 15, data output interface I; 16, data output interface II; 17, the data-interface on the mainboard; The switching push button of K1, startup hard disk I; The switching push button of K2, startup hard disk II; HD1, hard disk I read pilot lamp; HD2, hard disk II read pilot lamp.
Embodiment
The following example will further specify the present invention, and embodiment should not be regarded as limiting the scope of the invention.
This example is that the present invention will be described for example with two hard disks.The main frame of described support multi-hard disk independent startup comprises a computer cabinet 1, as shown in Figure 1, install on the case front panel two switching push button K1 and K2, a reboot button R (being the Reset button), hard disk I read pilot lamp HD1 and hard disk II read pilot lamp HD2.As shown in Figures 2 and 3, cabinet 1 inside is equipped with power supply 2, mainboard 3, hard disk I4 and hard disk II 5, cabinet 1 front panel installed inside one is switched control panel 6, as shown in Figure 3, switching control plate 6 is respectively equipped with power output interface I 12, the power output interface II 13 that is connected with hard disk I, hard disk II on the one side of cabinet 1 inside, the data output interface I 15 that is connected with hard disk I, hard disk II, data output interface II 16, the power input interface 11 that is connected with power supply and the Data Input Interface 14 that is connected with mainboard; The another side of switching control plate 6 is provided with double-throw contact I 9, double-throw contact II 10; The switching push button K1 and the double-throw contact I that are installed on the startup hard disk I on cabinet 1 front panel touch, and the switching push button K2 and the double-throw contact II that are installed on the startup hard disk II on cabinet 1 front panel touch, to realize the switching of hard disk I and hard disk II.
Power unit at computer has the five core supply sockets that supply hard disk I and hard disk II to use, the plug cable has five lines, color be respectively orange (+3.3V), black (ground connection), red (+5V), black (ground connection), yellow (+12V), the power input interface 11 on the switching control plate, power output interface I 12, power output interface II 13 are connected with power supply 2, hard disk I 4, hard disk II 5 by power lead 7 respectively.
Concrete operations are as follows:
Press switching push button K1, connect computer power supply, hard disk I work simultaneously.The Power red led is bright to be the computer operation power light; The HD1 green light is bright, and I reads pilot lamp for hard disk.
Press switching push button K2, connect computer power supply, hard disk II work simultaneously.The Power red led is bright, is the computer operation power light; The HD2 green light is bright, and II reads pilot lamp for hard disk.
The priority setting of button is followed successively by button K1, button K2 from high to low, that is to say under the situation of not start, if simultaneously when supressing button K1 and K2, the hard disk I that priority is high starts work; If in the process of start, to pin button K1 or K2 and continue more than 5 seconds, computing machine is automatic closing system then.
As shown in Figure 4, be commutation circuit schematic diagram of the present invention.Principle of work is: when pressing the button K1, connect the double-throw contact I on the switching control plate, relay J 1 closure is connected the power supply of hard disk I, after treating that hard disk I is reliable and connecting, and host-initiated, hard disk I work, LED 1 is bright; When pressing the button K2, relay J 2 closures are connected the power supply of hard disk II, after waiting that hard disk II is reliable and connecting, and host-initiated, hard disk II work, LED 2 is bright.Because the delay circuit on the switching control plate has the priority encoding function, when pressing the button K1 and K2 simultaneously, has only K1 to work, K2 is inoperative.Because the delay circuit on the switching control plate has auto-lock function, when by next button, corresponding hard disk power connection, host-initiated is pressed K1 or K2 again, does not change the power connection state of corresponding hard disk I or hard disk II, but the host power supply button is connected.
Constituting of commutation circuit: this circuit mainly is made of priority encoder 74LS148, code translator 74LS138, time base circuit NE555, the state owing to shake a little less than host power supply was in when main frame did not start, 3.3V, 5V, 12V voltage can be provided, therefore use the 5V power supply of host power supply as this circuit power.
The course of work of circuit: this circuit energized, K1, the full input high level of the I0-I7 of IC1 74LS148 when K2 does not press, its output terminals A 0, A1, A2 exports high level, the G2A of IC3 is a high level, IC3 is in the lock state, its output terminal Y0-Y7 all exports high level, and (this circuit has only been used Y0, Y1), inverter ic 6B, the IC6C output low level, IC4,2 of IC5,6 pin all are low level, its output terminal 3 pin are high level, Q2, Q4 is in off state, relay J1, J2 is not closed, the contact K3-5 of relay, K6-8 is all not closed, and hard disk I and hard disk II do not power.Simultaneously, because K1, K2 do not press, the IC6A input end is a high level, and its output terminal is a low level, and 2,6 pin of IC2 also are low level, 3 pin output high level, and QI is in off state, and relay J3 is not closed, and the host power switch button is in off-state.
1, before host-initiated, presses the button the working condition of K1
If when before host-initiated, pressing the button K1, the full output low level of the output terminals A 0-A2 of 74LS148, because Q2, Q3, Q4, Q5 are in off state, relay J 1, J2 contact disconnect, and the G2B of 74LS138 is in low level state, so the level of the output terminal Y0-1 of 74LS138 output is 0,1, inverter ic 6C output is constant, make IC5 output constant, Q4, Q5 still are in off state, and relay J 1 is still not closed.And inverter ic 6B output high level, rapidly to the C3 charging, voltage is greater than 2/3VCC, the 3 pin output low levels of IC4, and the Q2 conducting, relay J 2 coil electricities, the K3-5 closure, the power supply of hard disk 1 and host power supply connection, LED1 is bright.Simultaneously, the e utmost point of Q1 is also connected+the 5V power supply, and the C utmost point of Q2 is that the high level of the C utmost point of Q3 makes the function control end G2B of 74LS138 be in high level by D6, has realized the locking of 74LS138.If press the button K1, K2 again, the output of 74LS138 is constant, and the output of IC4, IC5 is constant, thereby after having realized connection hard disk 1, no matter presses KI or K2 again, and the power supply and the host power supply that do not change hard disk 1 are connected.When pressing the button K1, inverter ic 6A exports high level, and to the C1 charging, voltage is greater than 2/3VCC rapidly, the 3 pin output low levels of IC2, the Q1 conducting, relay J 3 coil electricities, contacting, because with IC2 is the main delay circuit time-delay that constitutes about 0.7 second, the closure time that is relay J 3 contacts is about 0.7 second, thereby after having guaranteed K3-5 closure (power supply of hard disk 1 and host power supply are connected), the host-initiated button is connected once.Delay circuit delay time based on IC4 is about 70 seconds, so when pressing the button K1, the 3 pin output low levels of IC4 are that the time of Q2 conducting is about 70 seconds, host-initiated at this moment, the host power supply operate as normal, the pilot lamp of host power supply is bright, the pilot lamp signal of host power supply makes the Q3 conducting, relay J 2 coils by K3 also with the 5V power connection, so later time about 70 seconds, the 3 pin output high level of IC4, Q2 disconnects because the Q3 conducting, relay J 2 coils still with the 5V power connection, its contact K3-K5 is in still closure state, thereby has guaranteed the reliable connection of the power supply and the host power supply of hard disk 1.Because not conducting of Q4, K6 are never closed, the coil of relay J 1 can not with the 5V power connection, even the pilot lamp signal of host power supply makes the Q5 conducting, can not make the closing of contact of relay J 1, promptly the power supply of hard disk 2 and host power supply can not be connected.
If behind host-initiated, press the button K1 or K2, because 74LS138 is locked, its output is constant, IC6B, IC6C all do not overturn, IC4, IC5 be output low level not, Q2, not conducting of Q4, K6-8 is not closed, but, make K3-5 still closed, so do not influence the power supply and host power supply connection of hard disk 1 when pressing the button K1 or K2 behind the host-initiated because the power light signal makes Q3 keep conducting, thereby after having guaranteed the power supply and host power supply connection of hard disk 1, the power supply of hard disk 2 and host power supply are connected; Because IC2 output high level makes the Q1 conducting, the contacting of relay J 3, host switch is connected, if pin K1 or K2 does not decontrol, then the contact of relay J 3 (host-initiated switch) remains in on-state, and main frame is shut down by force.
2, before host-initiated, press the button the working condition of K2
If when before host-initiated, pressing the button K2, the output terminals A 0-A2 of 74LS148 is output as 0,1,0, because Q2, Q3, Q4, Q5 are in off state, relay J 1, J2 contact disconnect, and the G2B of 74LS138 is in low level state, so the level of the output terminal Y0-1 of 74LS138 output is 1,0, inverter ic 6B output is constant, make IC4 output constant, Q2, Q3 still are in off state, and relay J 2 is still not closed.And inverter ic 6C output high level, rapidly to the C4 charging, voltage is too in 2/3VCC, the 3 pin output low levels of IC5, and the Q4 conducting, relay J 1 coil electricity, the K6-8 closure, the power supply of hard disk 2 and host power supply connection, LED2 is bright.Simultaneously, the e utmost point of Q1 is also connected+the 5V power supply, and the C utmost point of Q4 is that the high level of the C utmost point of Q5 makes the function control end G2B of 74LS138 be in high level by D10, has realized the locking of 74LS138.If press the button K1, K2 again, the output of 74LS138 is constant, and the output of IC4, IC5 is constant, thereby after having realized connection hard disk 2, no matter presses K1 or K2 again, and the power supply and the host power supply that do not change hard disk 2 are connected.When pressing the button K2, inverter ic 6A exports high level, and to the C1 charging, voltage is greater than 2/3VCC rapidly, the 3 pin output low levels of IC2, the Q1 conducting, relay J 3 coil electricities, contacting, because with IC2 is the main delay circuit time-delay that constitutes about 0.7 second, the closure time that is relay J 3 contacts is about 0.7 second, thereby after having guaranteed K6-8 closure (power supply of hard disk 2 and host power supply are connected), the host-initiated button is connected once.Delay circuit delay time based on IC5 is about 70 seconds, so when pressing the button K2, the 3 pin output low levels of IC5 are that the time of Q4 conducting is about 70 seconds, host-initiated at this moment, the host power supply operate as normal, the pilot lamp of host power supply is bright, the pilot lamp signal of host power supply makes the Q5 conducting, relay J 1 coil by K6 also with the 5V power connection, so later time about 70 seconds, the 3 pin output high level of IC5, Q4 disconnects because the Q5 conducting, relay J 1 coil still with the 5V power connection, its contact K6-8 is in still closure state, thereby has guaranteed the reliable connection of the power supply and the host power supply of hard disk 2.Because not conducting of Q2, K3 is never closed, the coil of relay J 2 can not with the 5V power connection, even the pilot lamp signal of host power supply makes the Q3 conducting, can not make the closing of contact of relay J 2, promptly the power supply of hard disk 1 and host power supply can not be connected.
If behind host-initiated, press the button K1 or K2, because 74LS138 is locked, its output is constant, IC6B, IC6C all do not overturn, IC4, IC5 be output low level not, Q2, not conducting of Q4, K3-5 is not closed, but, make K6-8 still closed, so do not influence the power supply and host power supply connection of hard disk 2 when pressing the button K1 or K2 behind the host-initiated because the power light signal makes Q5 keep conducting, thereby after having guaranteed the power supply and host power supply connection of hard disk 2, the power supply of hard disk 1 and host power supply are connected; Because IC2 output high level makes the Q1 conducting, the contacting of relay J 3, host switch is connected, if pin K1 or K2 does not decontrol, then the contact of relay J 3 (host-initiated switch) remains in on-state, and main frame is shut down by force.
Switch hard disk 1 and hard disk 2 if desired, turn off main frame after, switch by the K1 that touches the button, K2.
Present embodiment device therefor and method be all with embodiment 1, has only different to be, the present invention can be used for the more hard disk main frame that three hard disks, four hard disks or power source loads allow, and the number of switching push button needs be complementary with the hard disk number.Hard-disk interface adopts ide interface, and the power unit of computer adopts the four-core supply socket of using for hard disk I, II.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. a main frame of supporting multi-hard disk independent startup comprises that one has the computer cabinet of power supply, is provided with mainboard in the cabinet, it is characterized in that: also comprise in the cabinet:
At least two hard disks independently;
And switching control plate that places on the case front panel, switching control plate is provided with interface and the double-throw contact that is connected with hard disk, power supply, mainboard respectively, also be provided with commutation circuit on the described switching control plate, commutation circuit comprises delay circuit and relay, and delay circuit is made of priority encoder 74LS148, code translator 74LS138 and time base circuit NE555;
The front panel of described cabinet is provided with switching push button, and itself and double-throw contact touch, in order to realize that the quantity of described switching push button and double-throw contact is equal to the quantity of hard disk respectively to the choosing of hard disk.
2. the main frame of support multi-hard disk independent startup according to claim 1, it is characterized in that: described interface is located at switching control plate on the one side of cabinet inside, comprises the power output interface that is connected with hard disk, the data output interface that is connected with hard disk, the power input interface that is connected with power supply and the Data Input Interface that is connected with mainboard; The another side of switching control plate is provided with double-throw contact.
3. the main frame of support multi-hard disk independent startup according to claim 1 and 2 is characterized in that: the quantity of described power output interface and data output interface is equal to the quantity of hard disk respectively.
4. the main frame of support multi-hard disk independent startup according to claim 1 and 2 is characterized in that: described power unit has the five core supply sockets of using for hard disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100850373A CN101241383B (en) | 2008-03-14 | 2008-03-14 | Computer main unit supporting multi- hard disk independent startup and its accomplishing method |
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| CN2008100850373A CN101241383B (en) | 2008-03-14 | 2008-03-14 | Computer main unit supporting multi- hard disk independent startup and its accomplishing method |
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| Publication Number | Publication Date |
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| CN101241383A CN101241383A (en) | 2008-08-13 |
| CN101241383B true CN101241383B (en) | 2010-10-13 |
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| CN107239113A (en) * | 2016-03-28 | 2017-10-10 | 天津市众创锐迪科技有限公司 | A kind of main frame for supporting multi-hard disk independent startup |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283826A (en) * | 1999-10-19 | 2001-02-14 | 深圳市宏网实业有限公司 | Single-motherboard network security computer |
| CN2439063Y (en) * | 2000-08-15 | 2001-07-11 | 宝山钢铁股份有限公司 | Computer network and system switching device |
| CN2530291Y (en) * | 2001-10-29 | 2003-01-08 | 王钧 | Computer memory reversing device |
| CN2593255Y (en) * | 2002-05-16 | 2003-12-17 | 刘宏 | Computer switching power source with dual harddisk drive switching device |
| CN201159862Y (en) * | 2008-03-14 | 2008-12-03 | 吴兆红 | Computer main unit supporting independent start of multiple hard disks |
-
2008
- 2008-03-14 CN CN2008100850373A patent/CN101241383B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283826A (en) * | 1999-10-19 | 2001-02-14 | 深圳市宏网实业有限公司 | Single-motherboard network security computer |
| CN2439063Y (en) * | 2000-08-15 | 2001-07-11 | 宝山钢铁股份有限公司 | Computer network and system switching device |
| CN2530291Y (en) * | 2001-10-29 | 2003-01-08 | 王钧 | Computer memory reversing device |
| CN2593255Y (en) * | 2002-05-16 | 2003-12-17 | 刘宏 | Computer switching power source with dual harddisk drive switching device |
| CN201159862Y (en) * | 2008-03-14 | 2008-12-03 | 吴兆红 | Computer main unit supporting independent start of multiple hard disks |
Non-Patent Citations (1)
| Title |
|---|
| CN 2530291 Y,全文. |
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