CN102615084A - Hardware destroy circuit of solid hard disc - Google Patents
Hardware destroy circuit of solid hard disc Download PDFInfo
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- CN102615084A CN102615084A CN2012101094238A CN201210109423A CN102615084A CN 102615084 A CN102615084 A CN 102615084A CN 2012101094238 A CN2012101094238 A CN 2012101094238A CN 201210109423 A CN201210109423 A CN 201210109423A CN 102615084 A CN102615084 A CN 102615084A
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Abstract
The invention discloses a hardware destroy circuit of a solid hard disc, which is characterized in that the destroy circuit comprises a destroy trigger switch, a high voltage power supply, a destroy controller, a shifting device array, a flash storage array and a programmable logic controller. The destroy trigger switch is electrically connected with the destroy controller through the programmable logic controller, the shifting device array is electrically connected with the flash storage array and is connected with the destroy controller in a controlled mode, and the high voltage power supply is electrically connected with the shifting device array. When the hard disc normally works, the shifting device array enables a power supply negative electrode of a flash chip in the flash storage array to be communicated with a power supply negative electrode of a system. After the destroy controller receives destroy command signals of the destroy trigger switch, the destroy controller controls the shifting device array to enable the positive electrode of the high voltage power supply to be switched to and connected with the power supply negative electrode of the flash chip one by one, reverse high voltage is exerted on the flash chip, and the flash chip is burnt one by one.
Description
Technical field
The present invention relates to information security technology, be specially a kind of solid hard disk hardware and destroy circuit.This destruction circuit is applicable to the data security field of storage, especially possesses in the data destroying function solid hard disk.
Background technology
Along with rapid development of information technology, traditional mechanical magnetic hard disk is because its intrinsic shortcoming (avoiding vibrations in the use, to environmental adaptability difference or the like) more and more can not satisfy needs of people in some field.The solid hard disk of the employing semiconductor storage medium (Flash) of fortune Ying Ersheng uses extensive all the more.This hard disk does not in use need mechanical movement, and environmental adaptability is strong, has solved the shortcoming of traditional mechanical hard disk effectively.
But in today of information huge explosion, information security has been thus lifted to a new high, no matter be all increasing concern information security issue of business system or national defense safety.The solid hard disk is as the carrier of information storage, and the information security issue of effectively protecting hard disk is by extensive discussions.The focus of discussing is mainly wherein aspect three: first is encrypted exactly; In computer system encryption software is installed, the information in the hard disk is encrypted, to prevent that secret information from illegally being stolen.But for some professionals, especially be engaged in the spy that secret information is stolen, encryption can not be accomplished real safety; Second is exactly information deletion; Be exactly through carrying out specific program, with all the data full scale clearances in the hard disk.But there are shortcomings such as checkout time is long in this method; The 3rd is exactly physical destroying; Destroy circuit through starting hardware, Flash controller or Flash storage array of particles are burnt, make hard disk be in the expendable state of physical damage.This method data dump is thorough, the time of implementation short, can guarantee effectively that data message is not by illegal diffusion in the solid hard disk.Thereby protection information security.
Adopt the hardware destroying method to reach the purpose of burning storage medium one by one through the Flash particle on the solid hard disk is applied reverse high voltage respectively.Chinese patent " a kind of electronic hard disc and electronic equipment " (application number 200710075999.6) discloses a kind of solid state hard disc hardware and has destroyed scheme.There is unbalanced for burning of multi-disc Flash particle, not thorough problem in this scheme.For example, use C voltage that it is burnt to A, two Flash of B.As everyone knows, when C voltage acts on A, B chip simultaneously, because there is trickle electrical differences property in the Flash particle; When the A chip is burnt till shorted to earth early than the B chip; C voltage output shorted to earth causes C voltage output protection, output voltage is low or damage, will exist the A chip to be burnt like this, and the excellent situation of B chip; Cause destroying not exclusively, information is still dangerous.
Summary of the invention
To the deficiency of prior art, the technical problem that quasi-solution of the present invention is determined is to provide a kind of solid hard disk hardware to destroy circuit.This circuit is intended to solve to be carried out when destroying operation, thoroughly burns each Flash storage particle on the solid hard disk, reaches being stored in the purpose that data message is thoroughly destroyed in the Flash particle.
The technical solution that the present invention solve the technical problem is: design a kind of solid hard disk hardware and destroy circuit, it is characterized in that this destruction circuit comprises destruction trigger switch, high voltage source, destruction controller, switching device shifter array, Flash storage array and Programmable Logic Controller; Said destruction trigger switch is electrically connected with the destruction controller through Programmable Logic Controller; Said switching device shifter array is electrically connected with the Flash storage array, and the controlled destruction controller that is connected in; High voltage source is electrically connected with the switching device shifter array; During the hard disk operate as normal, the switching device shifter array is with the Flash chip power supply negative pole in the Flash storage array and system's power supply negative pole conducting; After the destruction controller receives the destruction command signal of destroying trigger switch; One by one the positive pole switching of high voltage source is connected on the power supply negative pole of Flash chip by destroying controller control switching device shifter array; The Flash chip is applied reverse high voltage, described Flash chip is burnt one by one.
Compared with prior art; Solid hardware destroy circuit of the present invention can apply reverse high voltage to the Flash particle one by one, reaches the purpose that storage medium is thoroughly burnt one by one, guarantees all to destroy all data messages; Having overcome prior art ruins in destruction and burns incomplete, halfway deficiency in the process; And have simple in structure, reliable operation, characteristics such as applicability is strong.
Description of drawings
Fig. 1 is the electrical principle block diagram that solid hard disk hardware of the present invention is destroyed a kind of embodiment of circuit.
Fig. 2 is that solid hard disk hardware of the present invention is destroyed the destruction controller of a kind of embodiment of circuit and the logic block-diagram of Programmable Logic Controller work.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof to further explain of the present invention.
The solid hard disk hardware of the present invention's design is destroyed circuit and (is called for short and destroys circuit; Referring to Fig. 1,2), it is characterized in that this destruction circuit comprises destruction trigger switch 1, high voltage source 2, destroys controller 3, switching device shifter array 4, Flash storage array 5 and Programmable Logic Controller 6; Said destruction trigger switch 1 is electrically connected with destruction controller 3 through Programmable Logic Controller 6; Said switching device shifter array 4 is electrically connected with Flash storage array 5, and controlled being connected in destroyed controller 3; High voltage source 2 is electrically connected with switching device shifter array 4; During the hard disk operate as normal, switching device shifter array 4 is with the Flash chip power supply negative pole in the Flash storage array 5 and system's power supply negative pole conducting; After destruction controller 3 receives the destruction command signal of destroying trigger switch 1; One by one the positive pole switching of high voltage source 2 is connected on the power supply negative pole of Flash chip by destroying controller 3 control switching device shifter arrays 4; The Flash chip is applied reverse high voltage, described Flash chip is burnt one by one.
The present invention destroys the described destruction trigger switch 1 of circuit and is used to start destroy command.The destruction trigger switch 1 of embodiment adopts conventional press button.In destroying the circuit working process; Destroy trigger switch 1 and can adopt the manual triggers mode; Send and destroy circuits command; Also can adopt the electronics triggering signal relevant, send and destroy circuits command, can also use the long-distance wireless remote control mode to send and destroy circuits command etc. with solid hard disc physical positional information or work state information.
The present invention destroys the described high voltage source 2 of circuit and is used for applying reverse high voltage to Flash storage array 5, through one by one the Flash particle being applied reverse high voltage, reaches the purpose that storage medium is thoroughly burnt one by one, guarantees all to destroy all data messages.On circuit connects, the positive source conducting of Flash chip in the negative pole of maintenance high voltage source 2 and the Flash storage array 5.High voltage source 2 can adopt the high voltage step-up circuit of isolating with the solid hard-disk system, also can adopt the battery feed circuit of off-line.In practical implementation, can change the producing method of high voltage source 2, the destruction circuit is possessed in system destroy function, the producing method of described change high voltage source 2 comprises battery, system high pressure power supply etc.
Every Flash chip power supply negative pole that the present invention destroys in the described Flash storage array 5 of circuit is controlled by the change-over switch of switching device shifter array 4 respectively.During operate as normal, with Flash chip power supply negative pole and system's power supply negative pole conducting, guarantee operate as normal by switching device shifter array 4.After destruction controller 3 receives the destruction command signal of destroying trigger switch 1; One by one the high-voltage power cathode switching is connected on the power supply negative pole of Flash chip by destroying controller 3 control switching device shifter arrays 4; The Flash chip is applied reverse high voltage; Flash chip in the Flash storage array 5 is burnt one by one, thereby the data that will be stored on the Flash chip are thoroughly destroyed.
The present invention destroys the described destruction controller 3 of circuit and adopts the logic chip of Programmable Logic Controller 6 to realize control.The power supply of Programmable Logic Controller 6 can produce through high voltage source 2 step-downs, can guarantee that thus the present invention destroys the multiple destruction mode that circuit possesses foregoing description.When the solid hard disk normally works on power, destroy the system works power voltage supply of controller 3 by the solid hard disk.Destroy controller 3 receive destroy the destruction signal that trigger switch 1 sends after; Start the Flash chip and burn circuit; Destroy 3 pairs of switching device shifter arrays 4 of controller and send control signal; Utilize switching device shifter array 4 control high voltage sourcies 2 respectively the Flash chip in the Flash storage array 5 to be applied reverse high voltage, reach the purpose of burning the Flash chip one by one.
The present invention destroys described switching device shifter array 4 embodiment of circuit and adopts the single-pole double throw electromagnetic relay, and the quantity of relay is consistent with the quantity of Flash chip in the Flash storage array 5, and accepts to destroy the control of controller 3.Under solid hard disk operate as normal, destroy power cathode and the conducting of solid hard-disk system power cathode that controller 3 control relays keep the Flash chip, guarantee the hard disk operate as normal.Receive when destroying the destroy command that trigger switch 1 sends in case destroy controller 3, destroy controller 3 automatically control switching device shifter arrays 4 change the switching state of array one by one, destroy every Flash chip in the Flash storage array 5 respectively.
The present invention destroys circuit and can be used for preparing the solid hard disk with hardware self-destroying function.Described Flash storage array 5 is general Flash storage particle, cooperates the Flash controller can realize the output memory function of solid hard disk.
The present invention destroys circuit through one by one the Flash particle being applied reverse high voltage, can reach the purpose that storage medium is all thoroughly burnt, and guarantees that data message is not by illegal expanding.
Above embodiment only is the concrete example application that the present invention destroys circuit, does not limit the protection domain of the application's claim.Every modification and non-intrinsically safe that on the application's claim technical scheme, carries out is improved, all within the application's claim protection domain.
The present invention does not address part and is applicable to prior art.
Claims (3)
1. a solid hard disk hardware is destroyed circuit, it is characterized in that this destruction circuit comprises destruction trigger switch, high voltage source, destruction controller, switching device shifter array, Flash storage array and Programmable Logic Controller; Said destruction trigger switch is electrically connected with the destruction controller through Programmable Logic Controller; Said switching device shifter array is electrically connected with the Flash storage array, and the controlled destruction controller that is connected in; High voltage source is electrically connected with the switching device shifter array; During the hard disk operate as normal, the switching device shifter array is with the Flash chip power supply negative pole in the Flash storage array and system's power supply negative pole conducting; After the destruction controller receives the destruction command signal of destroying trigger switch; One by one the positive pole switching of high voltage source is connected on the power supply negative pole of Flash chip by destroying controller control switching device shifter array; The Flash chip is applied reverse high voltage, described Flash chip is burnt one by one.
2. destroy circuit according to the said solid hard disk of claim 1 hardware, it is characterized in that said high voltage source adopts the high voltage step-up circuit of isolating with the solid hard-disk system, perhaps adopts the battery feed circuit of off-line.
3. destroy circuit according to the said solid hard disk of claim 1 hardware; It is characterized in that described switching device shifter array adopts the single-pole double throw electromagnetic relay; The quantity of relay is consistent with the quantity of Flash chip in the Flash storage array, and accepts to destroy the control of controller.
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CN2012101094238A CN102615084A (en) | 2012-04-16 | 2012-04-16 | Hardware destroy circuit of solid hard disc |
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CN2012101094238A CN102615084A (en) | 2012-04-16 | 2012-04-16 | Hardware destroy circuit of solid hard disc |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104376279A (en) * | 2014-08-17 | 2015-02-25 | 钟亦云 | Electronic product packaging device |
CN104668278A (en) * | 2015-03-20 | 2015-06-03 | 中国人民解放军军械工程学院 | Secret-related USB flash disc self-destruction device |
CN104681076A (en) * | 2013-11-28 | 2015-06-03 | 中国航天科工集团第三研究院第八三五七研究所 | Solid hard disk with quick data self-destructing function |
CN109670348A (en) * | 2019-01-31 | 2019-04-23 | 西安奇维科技有限公司 | The highly reliable universal solid state hard disk rapid physical of one kind destroys circuit and method |
CN109877133A (en) * | 2019-01-24 | 2019-06-14 | 中国航空工业集团公司洛阳电光设备研究所 | Data destroying system and its implementation based on miniaturization single-chip storage dish |
CN110968531A (en) * | 2019-11-27 | 2020-04-07 | 浪潮商用机器有限公司 | Data destruction method, system and device of SSD |
CN111090895A (en) * | 2020-02-19 | 2020-05-01 | 烟台北方星空自控科技有限公司 | Logic destruction system and method for EMMC (embedded multi-media card) memory |
CN112883438A (en) * | 2021-03-25 | 2021-06-01 | 湖南国科微电子股份有限公司 | Solid state disk and data destruction method |
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CN201707677U (en) * | 2010-04-21 | 2011-01-12 | 湖南源科高新技术有限公司 | High-confidentiality solid hard disk product based on double destroy technology |
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EP0681295A1 (en) * | 1994-05-06 | 1995-11-08 | STMicroelectronics S.r.l. | Burn-in method for nonvolatile flash - EPROM memory devices |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104681076A (en) * | 2013-11-28 | 2015-06-03 | 中国航天科工集团第三研究院第八三五七研究所 | Solid hard disk with quick data self-destructing function |
CN104376279A (en) * | 2014-08-17 | 2015-02-25 | 钟亦云 | Electronic product packaging device |
CN104668278A (en) * | 2015-03-20 | 2015-06-03 | 中国人民解放军军械工程学院 | Secret-related USB flash disc self-destruction device |
CN109877133A (en) * | 2019-01-24 | 2019-06-14 | 中国航空工业集团公司洛阳电光设备研究所 | Data destroying system and its implementation based on miniaturization single-chip storage dish |
CN109670348A (en) * | 2019-01-31 | 2019-04-23 | 西安奇维科技有限公司 | The highly reliable universal solid state hard disk rapid physical of one kind destroys circuit and method |
CN110968531A (en) * | 2019-11-27 | 2020-04-07 | 浪潮商用机器有限公司 | Data destruction method, system and device of SSD |
CN110968531B (en) * | 2019-11-27 | 2024-01-09 | 浪潮商用机器有限公司 | Data destruction method, system and device for SSD |
CN111090895A (en) * | 2020-02-19 | 2020-05-01 | 烟台北方星空自控科技有限公司 | Logic destruction system and method for EMMC (embedded multi-media card) memory |
CN112883438A (en) * | 2021-03-25 | 2021-06-01 | 湖南国科微电子股份有限公司 | Solid state disk and data destruction method |
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Application publication date: 20120801 |