CN108918047A - A kind of ceramic package safety protection structure based on barometric surveying - Google Patents
A kind of ceramic package safety protection structure based on barometric surveying Download PDFInfo
- Publication number
- CN108918047A CN108918047A CN201810735281.3A CN201810735281A CN108918047A CN 108918047 A CN108918047 A CN 108918047A CN 201810735281 A CN201810735281 A CN 201810735281A CN 108918047 A CN108918047 A CN 108918047A
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- China
- Prior art keywords
- ceramic package
- controller
- mould group
- baroceptor
- safety protection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Abstract
The invention discloses a kind of ceramic package safety protection structure based on barometric surveying, wherein including：Ceramic package airtight cavity, baroceptor mould group, temperature sensor mould group, controller, BUS OFF controller and memory, controller are divided into state determining program module and other program modules；Baroceptor mould group, temperature sensor mould group, controller, BUS OFF controller and memory are sealingly disposed in ceramic package airtight cavity；Baroceptor mould group is for obtaining the intracorporal barometric information of ceramic package closed chamber, and temperature sensor mould group is for obtaining the intracorporal temperature data of ceramic package closed chamber；State determining program module, for whether being destroyed with the airtightness of environment in judgement, if airtightness is destroyed according to the intracorporal temperature data of ceramic package closed chamber and barometric information, controller wipes core sensitive data in memory, then successively wipes total data according to data sensitive.
Description
Technical field
The present invention relates to a kind of safety protection circuit, especially a kind of ceramic package security protection knot based on barometric surveying
Structure.
Background technique
Vehicles Collected from Market for have high-performance, it is highly reliable, miniaturization the features such as the ever-increasing application demand of system so that
System-in-Package technology (SiP) is widely used by numerous areas such as national defence, safety, security protection, finance, these fields are applied while being deposited
Actual demand in terms of safety.The means (including burn into is uncapped) that attacker generallys use de-encapsulation add SiP
Electrical measurement, by the data information of interaction between acquisition system component, for spying upon program, key and other sensitive datas.By
It is related to multicomponent device in SiP to interconnect, rather than one chip, even with encryption and decryption mode, simply by the presence of clear data in first device
It is transmitted between part, can be released from after encapsulation plus electrometric mode cracks easily.And it is limited to the narrow volume of SiP, conventional physical
The security protection scheme in face is difficult to put to good use, urgently breaks so that small size SiP encapsulated circuit becomes in the security protection of physical layer
The problem of solution.
Summary of the invention
The purpose of the present invention is to provide a kind of ceramic package safety protection structure based on barometric surveying, for solving
State problem of the prior art.
A kind of ceramic package safety protection structure based on barometric surveying of the present invention, wherein including：Ceramic package closed chamber
Body, baroceptor mould group, temperature sensor mould group, controller, BUS OFF controller and memory, controller are divided into shape
State determining program module and other program modules；Baroceptor mould group, temperature sensor mould group, controller, BUS OFF
Controller and memory are sealingly disposed in ceramic package airtight cavity；Baroceptor mould group is for obtaining ceramic package
The intracorporal barometric information of closed chamber, temperature sensor mould group is for obtaining the intracorporal temperature data of ceramic package closed chamber；State
Determining program module, for passing through gas pressure intensity equation according to the intracorporal temperature data of ceramic package closed chamber and barometric information
PV=NRT calculates practical n value, and compared with preset N value, to judge whether the airtightness of interior environment is destroyed, if airtightness
It is destroyed, controller wipes core sensitive data in memory, then successively wipes total data according to data sensitive.
One embodiment of the ceramic package safety protection structure according to the present invention based on barometric surveying, wherein further include：
Other functional circuit parts control other circuits according to other program modules.
One embodiment of the ceramic package safety protection structure according to the present invention based on barometric surveying, wherein further include：
External signal interface is communicated for controller with outside.
One embodiment of the ceramic package safety protection structure according to the present invention based on barometric surveying, wherein further include：
Bus is debugged, which obtains the debugging atmospheric pressure value and debugging temperature value of interior environment by debugging bus.
One embodiment of the ceramic package safety protection structure according to the present invention based on barometric surveying, wherein further include：
First level shifting circuit and second electrical level conversion circuit；First level shifting circuit is connected to controller and baroceptor
Between mould group, second electrical level conversion circuit is connected between controller and temperature sensor mould group.
The purpose of the present invention is to provide a kind of ceramic package safety protection structure based on barometric surveying is realized to ceramics
The security protection for encapsulating SiP internal data prevents attacker from adding electrometric mode to obtain sensitive data by uncapping, and increase is attacked
The person's of hitting cracks complexity and cracks cost, solves small size SiP ceramic package circuit in the security protection of encapsulation physical layer
Problem.
Detailed description of the invention
Fig. 1 show the module map of the ceramic package safety protection structure the present invention is based on barometric surveying；
Fig. 2, which is shown, powers on security mechanism flow chart.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to of the invention
Specific embodiment is described in further detail.
Fig. 1 show the module map of the ceramic package safety protection structure the present invention is based on barometric surveying, as shown in Figure 1,
The SiP ceramic packaging structure that realization security protection is perceived using interior environment atmospheric pressure value of the invention, including：Ceramic package closed chamber
Body 1, baroceptor mould group 2, temperature sensor mould group 3, level shifting circuit 4, level shifting circuit 5, controller 8, bus
Controller 9, memory 10 are turned off, further includes：Other functional circuit parts 11, external signal interface, cut-off signals and debugging are total
Line.Wherein controller 8 includes independent state determining program module 6, other program modules 7.Baroceptor mould group 2 and level
Conversion circuit 4 is unidirectionally interconnected on data path, is unidirectionally interconnected on control access, and level shifting circuit 4 and controller 8 are in number
According to unidirectionally interconnecting on access, unidirectionally interconnecting on control access, temperature sensor mould group 3 and level shifting circuit 5 are logical in data
The unidirectional interconnection in road unidirectionally interconnects on control access, level shifting circuit 5 and controller 8 on data path unidirectionally interconnection,
It is unidirectionally interconnected on control access, controller 8 and the two-way interconnection of memory 10, controller 8 and BUS OFF controller 9 are two-way mutually
Connection, controller 8 and the two-way interconnection in other functional circuit parts 11.
As shown in Figure 1, the present invention is a kind of to perceive the SiP ceramic package circuit for realizing security protection using interior environment atmospheric pressure value
Structure, by baroceptor mould group 2, temperature sensor mould group 3, level shifting circuit 4, level shifting circuit 5, controller 8, total
Line shutdown controller 9, memory 10, other functional circuit parts 11 are all integrated into same ceramic package airtight cavity 1, benefit
The feature fixed with 1 high-air-tightness of ceramic package airtight cavity, volume passes through baroceptor mould group 2 and temperature sensor mould
Atmospheric pressure value and temperature value in 3 measurement cavity of group, and by independent state determining program module 6 according to gas pressure intensity equation PV=
NRT calculates N value and compared with setting value, judges whether the airtightness of interior environment is destroyed, if airtightness is destroyed, controller 8
Core sensitive data in memory 7 will be wiped first when powering on, and then successively wipe total data according to data sensitive, from
And realize security protection to ceramic package SiP internal data, prevent attacker by uncap plus electrometric mode obtain it is quick
Feel data.Since the encapsulated circuit structure introduces the N value for having specificity, largely increase attacker cracks complexity
With crack cost.The SiP ceramic package circuit structure solves small size SiP ceramic package circuit in the peace of encapsulation physical layer
Full protection problem.
As shown in Figure 1, controller 8 will be divided into independent state determining program module 6 and other programs to the control of program
7 two parts of module, so that will not influence the work of independent state determining program module 6 after other program modules 7 are destroyed
Make.
As shown in Figure 1, baroceptor mould group 2 at least has No. 1 baroceptor, temperature sensor mould group 3 at least has
Standby No. 1 temperature sensor.To avoid baroceptor or temperature sensor component failure that circuit error is caused to start security protection
Operation, baroceptor mould group 2 can use more redundancy baroceptors, and temperature sensor mould group 3 can use more redundancy temperature
Sensor is spent, usually selection odd number, convenient for judging true atmospheric pressure value or temperature value.
As shown in Figure 1, the ceramic package safety protection structure based on barometric surveying is in the different pressure atmosphere atmosphere that can be set
Interior progress sealing cap welding is enclosed, it is closed to complete interior environment.It is powered on for the first time after air tight test is qualified, by debugging bus acquisition
Ambient pressure value and temperature value calculate N value as setting value according to gas pressure intensity equation PV=NRT, and by the value and state judges
After program, other program Solidifications to controller, program operation will change cut-off signals and export low level, make externally to debug bus pass
It closes.After being again powered up, independent state determining program module obtains atmospheric pressure value and temperature value in cavity, according to gas pressure intensity equation
PV=NRT calculates N value and compared with setting value, judges whether the airtightness of interior environment is destroyed, if airtightness is destroyed, control
Device 9 will wipe first core sensitive data in memory 10 when powering on, and then successively wipe whole numbers according to data sensitive
According to, while the wholly off work of other program modules.
The present invention is based on the ceramic package safety protection structures of barometric surveying, by baroceptor mould group, temperature sensor
Mould group, level shifting circuit A, level shifting circuit B, controller, BUS OFF controller, memory, other functional circuit portions
Divide and be all integrated into same ceramic package cavity, using the feature that ceramic package internal cavity high-air-tightness, volume are fixed, leads to
Atmospheric pressure value and temperature value in baroceptor mould group and temperature sensor mould group measurement cavity are crossed, and journey is judged by independent state
Sequence module judges whether the airtightness of interior environment is broken according to gas pressure intensity equation PV=NRT calculating N value and compared with setting value
It is bad, prevent attacker from adding electrometric mode to obtain sensitive data by uncapping.Have since the encapsulated circuit structure introduces
The N value of specificity largely increases cracking for attacker and complexity and cracks cost.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of ceramic package safety protection structure based on barometric surveying, which is characterized in that including：Ceramic package closed chamber
Body, baroceptor mould group, temperature sensor mould group, controller, BUS OFF controller and memory, controller are divided into shape
State determining program module and other program modules；
Baroceptor mould group, temperature sensor mould group, controller, BUS OFF controller and memory are sealingly disposed in
In ceramic package airtight cavity；
Baroceptor mould group is for obtaining the intracorporal barometric information of ceramic package closed chamber, and temperature sensor mould group is for obtaining
The intracorporal temperature data of ceramic package closed chamber；
State determining program module, for passing through gas according to the intracorporal temperature data of ceramic package closed chamber and barometric information
Pressure equation PV=NRT calculates practical n value, and compared with preset N value, to judge whether the airtightness of interior environment is destroyed,
If airtightness is destroyed, controller wipes core sensitive data in memory, then successively wipes whole according to data sensitive
Data.
2. the ceramic package safety protection structure based on barometric surveying as described in claim 1, which is characterized in that further include：
Other functional circuit parts control other circuits according to other program modules.
3. the ceramic package safety protection structure based on barometric surveying as described in claim 1, which is characterized in that further include：
External signal interface is communicated for controller with outside.
4. the ceramic package safety protection structure based on barometric surveying as described in claim 1, which is characterized in that further include：
Bus is debugged, which obtains the debugging atmospheric pressure value and debugging temperature value of interior environment by debugging bus.
5. the ceramic package safety protection structure based on barometric surveying as described in claim 1, which is characterized in that further include：
First level shifting circuit and second electrical level conversion circuit；First level shifting circuit is connected to controller and baroceptor
Between mould group, second electrical level conversion circuit is connected between controller and temperature sensor mould group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735281.3A CN108918047A (en) | 2018-07-06 | 2018-07-06 | A kind of ceramic package safety protection structure based on barometric surveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810735281.3A CN108918047A (en) | 2018-07-06 | 2018-07-06 | A kind of ceramic package safety protection structure based on barometric surveying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918047A true CN108918047A (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810735281.3A Pending CN108918047A (en) | 2018-07-06 | 2018-07-06 | A kind of ceramic package safety protection structure based on barometric surveying |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0862086A (en) * | 1994-08-19 | 1996-03-08 | Furukawa Electric Co Ltd:The | Method for monitoring closure of closed equipment |
| US20020011094A1 (en) * | 1997-10-02 | 2002-01-31 | John Edward Cook | Temperature correction method and subsystem for automotive evaporative leak detection systems |
| CN204288227U (en) * | 2014-12-15 | 2015-04-22 | 天津光电聚能专用通信设备有限公司 | A kind of low-power consumption information destroying device detected in real time based on air pressure |
| US20150204753A1 (en) * | 2011-08-05 | 2015-07-23 | Karl F. Scheucher | Network manageable advanced gas sensor apparatus and method |
-
2018
- 2018-07-06 CN CN201810735281.3A patent/CN108918047A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0862086A (en) * | 1994-08-19 | 1996-03-08 | Furukawa Electric Co Ltd:The | Method for monitoring closure of closed equipment |
| US20020011094A1 (en) * | 1997-10-02 | 2002-01-31 | John Edward Cook | Temperature correction method and subsystem for automotive evaporative leak detection systems |
| US20150204753A1 (en) * | 2011-08-05 | 2015-07-23 | Karl F. Scheucher | Network manageable advanced gas sensor apparatus and method |
| CN204288227U (en) * | 2014-12-15 | 2015-04-22 | 天津光电聚能专用通信设备有限公司 | A kind of low-power consumption information destroying device detected in real time based on air pressure |
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Application publication date: 20181130 |
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| RJ01 | Rejection of invention patent application after publication |