CN203813666U - Power circuit of information safety engineering experimental platform - Google Patents
Power circuit of information safety engineering experimental platform Download PDFInfo
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- CN203813666U CN203813666U CN201420224362.4U CN201420224362U CN203813666U CN 203813666 U CN203813666 U CN 203813666U CN 201420224362 U CN201420224362 U CN 201420224362U CN 203813666 U CN203813666 U CN 203813666U
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- power
- power supply
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- throw switch
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Abstract
The utility model provides a power circuit of an information safety engineering experimental platform which resolves a problem that power supplies of three chip modules are connected to the power supply of an experimental platform, each chip can't power on and off alone, and independence of chip modules is absent in prior art. The power circuit comprises a DC power supply, a USB interface power supply, a switch and a voltage concerting circuit. The switch comprises a single-pole triple-throw switch of which three movable ends are respectively connected with the DC power supply, the USB interface power supply and ground, a first single-pole single-throw switch connected with the DC power supply, and a second single-pole single-throw switch connected with the DC power supply. The voltage converting circuit comprises a first voltage converting circuit connected with the single-pole triple-throw switch, a second voltage converting circuit connected with the first single-pole single-throw switch, and a third voltage converting circuit connected with the second single-pole single-throw switch. The beneficial effects of the power circuit are that: the power circuit makes each module power on and off, reduces electric appliance interference when each module is working alone, and reduces the power consumption of the whole experimental platform.
Description
Technical field
The utility model relates to electronic engineering field, refers to especially a kind of power circuit of information security engineering experiment platform.
Background technology
Along with the continuous lifting of information security demand, the current special purpose system service equipment for guarantee information system safety (as VPN, cipher machine, server password machine, PCI encrypted card, intellective IC card, USB key) is widely used.China university is started late for the design of cryptographic service equipment and the personnel training of application aspect, and lack hardware experiment platform targetedly, allow student can on experiment porch, carry out special engineering practice study, grasp more all sidedly the design of cryptographic service equipment and the correlation technique of application and technical ability, and then promote student in the innovation ability of information security engineering field.
In order to meet the teaching demand of information security engineering aspect, we are on the basis of the general Z32 of Vehicles Collected from Market (being Z32L256U) safety governor development board, brand-new design a information security engineering experiment teaching platform, this platform is comprised of three modules: Z32 module, ARM module and FPGA module.In the process of this experiment porch of design, we find, existing technical scheme lacks the independent design of modular power source, the Power Management Design of primary circuit as shown in Figure 2, three module chip: Z32L256U, EP2C5Q208 and LPC2468 have been directly connected in 5V Switching Power Supply, cannot accomplish independently lower electricity and powering on of each module.And actual experiment often can need each module to work alone, especially Z32L256U chip, when loading new procedures, needs power-off restoration repeatedly conventionally.
Therefore in realizing the process of existing technical scheme, the applicant finds to exist following technical problem:
The power supply of three chip modules has all directly been received in the 5V DC power supply (VCC) of experiment porch, cannot accomplish like this to allow the power-on and power-off of one single chip independence, cause intermodule to lack independence, when each module is used separately, easily cause certain circuit to disturb, increased the power consumption of circuit simultaneously.
Utility model content
The utility model proposes a kind of power circuit of information security engineering experiment platform, having solved the power supply of three chip modules in prior art has all directly received on the power supply of experiment porch, cannot accomplish to allow one single chip independently descend electricity and power on, cause intermodule to lack the problem of independence.
The technical solution of the utility model is achieved in that
A power circuit for information security engineering experiment platform, comprising:
DC power supply;
USB interface power supply;
Switch, comprises the SP3T switch that three moved ends are connected with described DC power supply, described USB interface VDD-to-VSS respectively, the first single-pole single-throw switch (SPST) being connected with described DC power supply and the second single-pole single-throw switch (SPST) being connected with described DC power supply;
Voltage conversion circuit, comprises the first voltage conversion circuit being connected with described SP3T switch, the second voltage change-over circuit being connected with described the first single-pole single-throw switch (SPST) and the tertiary voltage change-over circuit being connected with described the second single-pole single-throw switch (SPST).
Further, the power circuit of information security engineering experiment platform described in the utility model, also comprises:
Safety governor, is connected with described the first voltage conversion circuit;
Arm processor, is connected with described second voltage change-over circuit;
Fpga chip, is connected with described tertiary voltage change-over circuit.
Preferably, the core component of described the first voltage conversion circuit, second voltage change-over circuit and tertiary voltage change-over circuit is LM1117-3.3 chip.
Preferably, described DC power supply is 5V direct-current switch power supply.
Preferably, described safety governor is Z32L256U chip.
Preferably, described arm processor is LPC2468 chip.
Preferably, described fpga chip is EP2C5Q208 chip.
The beneficial effects of the utility model are:
1, the design of the power circuit of information security engineering experiment platform described in the utility model, can make each module independence power-on and power-off, and the electrical equipment when reducing each module and working alone disturbs, and reduces the power consumption of whole experiment porch.
2, the design of the power circuit of information security engineering experiment platform described in the utility model, can make safety governor directly by USB interface, be powered, therefore when Z32 module works alone, USB interface can power, can carry out data communication again, without DC power supply, powers again.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of the power circuit of the information security engineering experiment platform that Fig. 1 provides for the utility model;
The schematic diagram of the power circuit of the Z32 safety governor development board that Fig. 2 provides for prior art.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the power circuit of a kind of information security engineering experiment platform described in the utility model, comprising:
DC power supply;
USB interface power supply;
Switch, comprises the SP3T switch that three moved ends are connected with described DC power supply, described USB interface VDD-to-VSS respectively, the first single-pole single-throw switch (SPST) being connected with described DC power supply and the second single-pole single-throw switch (SPST) being connected with described DC power supply;
Voltage conversion circuit, comprises the first voltage conversion circuit being connected with described SP3T switch, the second voltage change-over circuit being connected with described the first single-pole single-throw switch (SPST) and the tertiary voltage change-over circuit being connected with described the second single-pole single-throw switch (SPST).
The power circuit of information security engineering experiment platform described in the utility model, also comprises:
Safety governor, is connected with described the first voltage conversion circuit;
Arm processor, is connected with described second voltage change-over circuit;
Fpga chip, is connected with described tertiary voltage change-over circuit.
Wherein, preferably, the core devices of described the first voltage conversion circuit, second voltage change-over circuit and tertiary voltage change-over circuit is LM1117-3.3 chip.
Wherein, preferably, described DC power supply is 5V direct-current switch power supply.
Wherein, preferably, described safety governor is Z32L256U chip.
Wherein, preferably, described arm processor is LPC2468 chip.
Wherein, preferably, described fpga chip is EP2C5Q208 chip.
Particularly, the utility model provides a kind of power circuit of information security engineering experiment platform, this circuit as shown in Figure 1, relates in figure: Z32L256U chip, LPC2468 chip, EP2C5Q208 chip, LM1117-3.3 chip, two single-pole single-throw switch (SPST)s and a SP3T switch.The power pins of Z32L256U chip is not connected moved end with SP3T switch S 1 through LM1117-3.3 chip, three moved ends of SP3T switch S 1 respectively with 5V direct-current switch power supply, power supply be connected with the pin of USB interface power supply; 5V direct-current switch power supply is connected with the one end of single-pole single-throw switch (SPST) S2 (i.e. the first single-pole single-throw switch (SPST)), and the other end of single-pole single-throw switch (SPST) S2 is connected with LPC2468 power pins by LM1117-3.3 chip; 5V Switching Power Supply is connected with the one end of single-pole single-throw switch (SPST) S3 (i.e. the second single-pole single-throw switch (SPST)), and the other end of single-pole single-throw switch (SPST) S3 is connected with EP2C5Q208 chip power pin by LM1117-3.3 chip.In the time will carrying out independent power-on and power-off to each chip, only the switch that connects this chip module need to be disconnected and closing.
The advantage of the power circuit of information security engineering experiment platform described in the utility model mainly contains:
1, the design of the power circuit of information security engineering experiment platform described in the utility model, can make each module independence power-on and power-off, and the electrical equipment when reducing each module and working alone disturbs, and reduces the power consumption of whole experiment porch.
2, the design of the power circuit of information security engineering experiment platform described in the utility model, can make safety governor directly by USB interface, be powered, therefore when Z32 module works alone, USB interface can be able to be powered, can be carried out data communication again, without DC power supply, powers again.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. a power circuit for information security engineering experiment platform, is characterized in that, comprising:
DC power supply;
USB interface power supply;
Switch, comprises the SP3T switch that three moved ends are connected with described DC power supply, described USB interface VDD-to-VSS respectively, the first single-pole single-throw switch (SPST) being connected with described DC power supply and the second single-pole single-throw switch (SPST) being connected with described DC power supply;
Voltage conversion circuit, comprises the first voltage conversion circuit being connected with described SP3T switch, the second voltage change-over circuit being connected with described the first single-pole single-throw switch (SPST) and the tertiary voltage change-over circuit being connected with described the second single-pole single-throw switch (SPST).
2. the power circuit of information security engineering experiment platform according to claim 1, is characterized in that, also comprises:
Safety governor, is connected with described the first voltage conversion circuit;
Arm processor, is connected with described second voltage change-over circuit;
Fpga chip, is connected with described tertiary voltage change-over circuit.
3. the power circuit of information security engineering experiment platform according to claim 1, is characterized in that, the core component of described the first voltage conversion circuit, second voltage change-over circuit and tertiary voltage change-over circuit is LM1117-3.3 chip.
4. the power circuit of information security engineering experiment platform according to claim 1, is characterized in that, described DC power supply is 5V direct-current switch power supply.
5. the power circuit of information security engineering experiment platform according to claim 2, is characterized in that, described safety governor is Z32L256U chip.
6. the power circuit of information security engineering experiment platform according to claim 2, is characterized in that, described arm processor is LPC2468 chip.
7. the power circuit of information security engineering experiment platform according to claim 2, is characterized in that, described fpga chip is EP2C5Q208 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420224362.4U CN203813666U (en) | 2014-05-05 | 2014-05-05 | Power circuit of information safety engineering experimental platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420224362.4U CN203813666U (en) | 2014-05-05 | 2014-05-05 | Power circuit of information safety engineering experimental platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203813666U true CN203813666U (en) | 2014-09-03 |
Family
ID=51452365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420224362.4U Expired - Fee Related CN203813666U (en) | 2014-05-05 | 2014-05-05 | Power circuit of information safety engineering experimental platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203813666U (en) |
-
2014
- 2014-05-05 CN CN201420224362.4U patent/CN203813666U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160505 |