CN115879177A - Intelligent passive real-time physical destruction circuit for airborne solid-state storage disk - Google Patents
Intelligent passive real-time physical destruction circuit for airborne solid-state storage disk Download PDFInfo
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- CN115879177A CN115879177A CN202211249975.9A CN202211249975A CN115879177A CN 115879177 A CN115879177 A CN 115879177A CN 202211249975 A CN202211249975 A CN 202211249975A CN 115879177 A CN115879177 A CN 115879177A
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Abstract
The invention belongs to the field of embedded systems, and particularly relates to an intelligent passive real-time physical destruction circuit for an airborne solid-state storage disk, which comprises a boosting energy storage circuit, a current-limiting protection circuit and an MCU control MOS circuit, can meet the requirement that the airborne solid-state storage disk has no special destruction power supply and has extremely short destruction time, and solves the problem of passive real-time thorough destruction of data of the solid-state storage disk. The invention has simple structure, is suitable for the physical destruction scene of the aviation onboard solid-state storage disk under the rapid and passive conditions, ensures the safety of an onboard power supply system, and improves the physical destruction thoroughness of the solid-state storage disk and the independence of a destruction function circuit.
Description
Technical Field
The invention belongs to the field of embedded systems, and particularly relates to an intelligent passive real-time physical destruction circuit for an airborne solid-state storage disk.
Background
The solid-state storage disk of the airborne environment is subject to the situation that no special destruction power supply exists and rapid destruction is required, a higher destruction power supply needs to be provided, physical destruction needs to be triggered in real time when a physical destruction signal arrives, and meanwhile, in the instant of destruction, a chip is broken down by the destruction power supply, and the impedance to ground approaches zero. The load of destroying the power supply is equivalent to a short-circuit state, the current of the load is pulled up instantly, and the pulled-up current needs to be stabilized at a required fixed value. In addition, the current of the constraint power supply is considered, and meanwhile, enough destruction energy on the load is ensured, so that the solid-state storage disk is successfully destroyed by all values in the voltage interval of the destruction power supply.
Therefore, how to design an intelligent passive real-time physical destruction technology for an onboard solid-state storage disk is a topic which needs to be researched urgently.
Disclosure of Invention
In view of this, the invention provides an intelligent passive real-time physical destruction circuit for an airborne solid-state storage disk, which includes a boost energy storage circuit, a current-limiting protection circuit and an MCU control MOS circuit, and can meet the requirement that an airborne solid-state storage disk has no special destruction power supply and has an extremely short destruction time, and solve the problem of passive real-time thorough destruction of data in the solid-state storage disk.
In order to achieve the technical purpose, the invention adopts the following specific technical scheme:
an intelligent passive real-time physical destruction circuit for an on-board solid-state storage disk, comprising:
the boost energy storage circuit is arranged on the solid-state storage disk, stores energy based on a boost module and is used for providing a real-time destruction power supply;
the current-limiting protection circuit is arranged on the solid-state storage disk, is provided with a current-limiting protection chip and is used for limiting the current of the destroying power supply and avoiding the output short circuit of the boosting module;
the MCU controls the MOS circuit, is arranged on the solid-state storage disk and is used for controlling the power-on and power-off of the MOS circuit,
causing a destruction power supply to form a voltage pulse to be applied to the solid state storage disk;
wherein: and the MCU controls the MOS circuit to control the voltage pulse to execute serial and multi-round physical destruction on each chip in the solid-state storage disk.
Further, the boost energy storage circuit comprises a boost chip and a boost capacitor; the boosting chip continuously boosts the working voltage to the destroying voltage and stores the destroying voltage to the boosting capacitor, and when the enable signal of the MCU control MOS circuit is received, the boosting capacitor is controlled to release the destroying power supply.
Furthermore, the current-limiting protection circuit comprises a current-limiting protection chip and a power supply return-preventing module; the input end of the current-limiting protection chip is connected with the pressurizing capacitor, and the output end of the current-limiting protection chip is connected with the MCU control MOS circuit and used for limiting the high-level current of the voltage pulse at a preset current value.
Further, the preset current value is 4A.
Further, the MCU control MOS circuit comprises an MCU and an MOS switch module; a destruction control program is burnt in the MCU; and after the destruction control program reaches the destruction signal, the enabling signal is generated and the on-off of the MOS switch is controlled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a hardware block diagram of an intelligent passive real-time physical destruction circuit for an onboard solid-state storage disk in an embodiment of the present invention;
FIG. 2 is a circuit diagram of a boost tank circuit according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a current limiting protection chip according to an embodiment of the present invention;
FIG. 4 is a circuit diagram of a boost capacitor in accordance with an embodiment of the present invention;
FIG. 5 is a block diagram of a chip processor program flow in accordance with an embodiment of the present invention;
FIG. 6 is a circuit diagram of a chip in accordance with one embodiment of the present invention;
FIG. 7 is a circuit diagram of a MOS transistor switch according to an embodiment of the invention;
fig. 8 is a waveform diagram of an oscilloscope implementing chip destruction by a single chip microcomputer in multiple rounds one by one according to an embodiment of the present invention.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be carried into practice or applied to various other specific embodiments, and various modifications and changes may be made in the details within the description and the drawings without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be further noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than being drawn according to the number, shape and size of the components in actual implementation, and the type, number and proportion of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
In an embodiment of the present invention, an intelligent passive real-time physical destruction circuit for an onboard solid-state storage disk is provided, as shown in fig. 1, including:
the boost energy storage circuit is arranged on the solid-state storage disk, stores energy based on the boost module and is used for providing a destruction power supply in real time;
the current-limiting protection circuit is arranged on the solid-state storage disk, is provided with a current-limiting protection chip and is used for limiting the current of the destroying power supply and avoiding the output short circuit of the boosting module;
the MCU controls the MOS circuit, is arranged on the solid-state storage disk and is used for controlling the power-on and power-off of the MOS circuit,
causing a destruction power supply to form a voltage pulse to be applied to the solid-state storage disk;
wherein: and the MCU controls the MOS circuit to control the voltage pulse to execute serial and multi-round physical destruction on each chip in the solid-state storage disk.
In this embodiment, the boost energy storage circuit includes a boost chip and a boost capacitor; the boosting chip continuously boosts the working voltage to the destroying voltage and stores the destroying voltage to the boosting capacitor, and when the enable signal of the MCU control MOS circuit is received, the boosting capacitor is controlled to release the destroying power supply.
In this embodiment, the current-limiting protection circuit includes a current-limiting protection chip and a power supply anti-return module; the input end of the current-limiting protection chip is connected with the pressurizing capacitor, and the output end of the current-limiting protection chip is connected with the MCU control MOS circuit and used for limiting the high-level current of the voltage pulse at a preset current value. The MOS circuit of this embodiment is a MOS transistor switch.
In this embodiment, the preset current value is 4A.
In this embodiment, the MCU control MOS circuit includes an MCU and an MOS switch module; a destruction control program is burnt in the MCU; and after the destruction control program reaches the destruction signal, generating the enabling signal and controlling the on-off of the MOS switch.
The boost energy storage circuit of the embodiment mainly stores energy through the boost module, provides a destruction power supply in real time, ensures that when a physical destruction signal is sampled, can immediately provide enough large destruction voltage and can also provide enough destruction energy to break down a chip after passing through the current-limiting protection circuit, and ensures the thoroughness of destruction of the solid-state storage disk.
The current-limiting protection circuit of the embodiment mainly adopts a current-limiting protection chip and is matched with a peripheral resistor-capacitor configuration, so that the purpose of limiting the current of the destroying power supply to a stable value is realized. The destruction power supply is protected from being pulled up due to the reduction of the load at the moment of destruction, and the aim of stabilizing the current of the destruction power supply is fulfilled.
The MCU (single chip microcomputer) samples physical destruction signals to control the on-off of the MOS, so that the on-off of the destruction power supply on a plurality of chips of the solid-state storage disk is realized. The destruction mode that a plurality of chips are used for a plurality of rounds one by one is adopted, the destruction power supply is added to each chip of the solid-state storage disk in groups, the probability of destruction of the solid-state storage disk is greatly increased, and the thoroughness of destruction of the solid-state storage disk is guaranteed.
Finally, it should be noted that: the above embodiments are merely used to illustrate rather than limit the technical solutions of the present invention, and different examples include different modules, although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that; modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention any modifications and equivalents.
Aiming at the characteristic that an airborne solid-state storage disk does not have a special destruction power supply and requires quick destruction, the embodiment adopts a boosting energy storage design and a current-limiting protection method, and effectively controls the rising of the destruction instantaneous current and the falling of the load voltage. The SSD physical destruction is carried out by controlling the MOS through the MCU according to a physical destruction signal, the current of the destruction power supply is effectively and stably destroyed, the physical destruction of the solid-state storage disk is completed, the fact that the instantaneous large current of the destruction power supply is reduced when the destruction power supply is broken down by the solid-state storage disk due to limited load capacity is guaranteed, meanwhile, the boosting energy storage circuit provides extra destruction energy at the rear end of the current-limiting protection circuit, the onboard destruction power supply is protected, and the physical destruction target of the solid-state storage disk is completed.
As shown in fig. 2, the boost energy storage circuit of this embodiment adopts a high-efficiency boost conversion chip to boost the working voltage to the destruction voltage, and adds an energy storage backup capacitor to the destruction voltage, so as to temporarily and immediately apply the destruction power source to the storage chip by ensuring the destruction signal.
As shown in fig. 3 and 4, the current limiting protection circuit of the present embodiment: the current-limiting protection circuit mainly comprises a current-limiting protection chip and a voltage-boosting capacitor.
1) Current limiting protection
At the moment of switching on and destroying the power supply, the storage chip at the rear end is equal to a capacitive load, the capacitive load is directly charged, the current is very high, therefore, the current is limited for charging, and the charging current is limited within a specific value. In the scheme, the current limiting is realized through the current limiting chip, and the required current limiting condition can be realized by changing the current limiting adjusting resistor of the current limiting chip.
2) And (3) pressurizing a capacitor:
because the front-end current-limiting chip has limited flow control in the destroying process, if no pressurizing capacitor is provided, the voltage is provided for the destroying circuit only by the current-limiting chip, so that the chip to be destroyed enters a latch state and cannot be effectively destroyed. Meanwhile, the transient energy formed by the destruction pulse needs to be provided by an energy storage capacitor, and if the capacity of the capacitor is not enough, the transient energy for destruction is not enough.
In the embodiment, a program is burned in the single chip microcomputer to control the MOS transistor switching circuit, so as to form a destruction pulse, which is applied to the memory chip, and the operation flow diagram of the specific program is shown in fig. 5.
The circuit diagram of the single chip microcomputer and the circuit diagram of the MOS transistor switch of the present embodiment are respectively shown in fig. 6 and 7. The oscillogram of the oscilloscope when the single chip microcomputer destroys the chips one by one in multiple rounds is shown in fig. 8.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (5)
1. An intelligent passive real-time physical destruction circuit for an onboard solid-state storage disk, comprising:
the boost energy storage circuit is arranged on the solid-state storage disk, stores energy based on a boost module and is used for providing a real-time destruction power supply;
the current-limiting protection circuit is arranged on the solid-state storage disk, is provided with a current-limiting protection chip and is used for limiting the current of the destroying power supply and avoiding the output short circuit of the boosting module;
the MCU controls the MOS circuit, is arranged on the solid-state storage disk and is used for controlling the power-on and power-off of the MOS circuit,
causing a destruction power supply to form a voltage pulse to be applied to the solid state storage disk;
wherein: and the MCU controls the MOS circuit to control the voltage pulse to execute serial and multi-round physical destruction on each chip in the solid-state storage disk.
2. The intelligent passive real-time physical destruction circuit for an onboard solid-state storage disk of claim 1, wherein the boost energy storage circuit comprises a boost chip and a boost capacitor; the boosting chip continuously boosts the working voltage to the destroying voltage and stores the destroying voltage to the boosting capacitor, and when the enable signal of the MCU control MOS circuit is received, the boosting capacitor is controlled to release the destroying power supply.
3. The intelligent passive real-time physical destruction circuit for the on-board solid-state storage disk of claim 2, wherein the current-limiting protection circuit comprises a current-limiting protection chip and a power supply anti-return module; the input end of the current-limiting protection chip is connected with the pressurizing capacitor, and the output end of the current-limiting protection chip is connected with the MCU control MOS circuit and used for limiting the high-level current of the voltage pulse at a preset current value.
4. The intelligent passive real-time physical destruction circuit for an onboard solid-state storage disk according to claim 3, wherein the preset current value is 4A.
5. The intelligent passive real-time physical destruction circuit for an onboard solid-state storage disk of claim 4, wherein the MCU control MOS circuit comprises an MCU and an MOS switch module; a destruction control program is burnt in the MCU; and after the destruction control program reaches the destruction signal, the enabling signal is generated and the on-off of the MOS switch is controlled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211249975.9A CN115879177A (en) | 2022-10-12 | 2022-10-12 | Intelligent passive real-time physical destruction circuit for airborne solid-state storage disk |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211249975.9A CN115879177A (en) | 2022-10-12 | 2022-10-12 | Intelligent passive real-time physical destruction circuit for airborne solid-state storage disk |
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| CN115879177A true CN115879177A (en) | 2023-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117019847A (en) * | 2023-10-08 | 2023-11-10 | 北京傲星科技有限公司 | Solid state disk physical destruction method and solid state disk |
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- 2022-10-12 CN CN202211249975.9A patent/CN115879177A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117019847A (en) * | 2023-10-08 | 2023-11-10 | 北京傲星科技有限公司 | Solid state disk physical destruction method and solid state disk |
| CN117019847B (en) * | 2023-10-08 | 2023-12-29 | 北京傲星科技有限公司 | Solid state disk physical destruction method and solid state disk |
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