CN110708862A - Self-protection type safety circuit board - Google Patents

Self-protection type safety circuit board Download PDF

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Publication number
CN110708862A
CN110708862A CN201910938926.8A CN201910938926A CN110708862A CN 110708862 A CN110708862 A CN 110708862A CN 201910938926 A CN201910938926 A CN 201910938926A CN 110708862 A CN110708862 A CN 110708862A
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CN
China
Prior art keywords
substrate body
protective cover
trigger
insulating
self
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CN201910938926.8A
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Chinese (zh)
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CN110708862B (en
Inventor
李冬
吴翠娟
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Suzhou Institute of Trade and Commerce
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Suzhou Institute of Trade and Commerce
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Priority to CN201910938926.8A priority Critical patent/CN110708862B/en
Publication of CN110708862A publication Critical patent/CN110708862A/en
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Publication of CN110708862B publication Critical patent/CN110708862B/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0275—Security details, e.g. tampering prevention or detection
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
    • H05K1/0203—Cooling of mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0272—Adaptations for fluid transport, e.g. channels, holes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Security & Cryptography (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

The invention relates to a self-protection type safety circuit board, which adopts a brand new hidden self-destruction structural scheme, realizes the shielding protection of circuit wiring on the upper surface of a substrate body (1) and each circuit component (4) through a protective cover (3), avoids the acquisition of the circuit components (4) and the circuit wiring positions by lawless persons, simultaneously introduces a high-voltage power supply (2), designs each trigger part to be distributed at each position between the protective cover (3) and the substrate body (1), forms a displacement detection trigger core by a conducting strip (7) in each trigger part and two corresponding lead (8) contacts, can drive the displacement of an insulating rod (5) in one trigger part when the protective cover (3) is moved by an attack, leads the conducting strip (7) to be in contact with the two corresponding lead (8) contacts, namely is communicated to realize the impact burnout of the high-voltage power supply (2) on the key circuit components (4), the self-protection is completed, the implementation cost of the self-protection structure of the circuit board is reduced, and the safety of the self-protection of the circuit board is effectively improved.

Description

Self-protection type safety circuit board
Technical Field
The invention relates to a self-protection type safety circuit board, and belongs to the technical field of circuit board self-protection.
Background
The circuit board can be called as a printed circuit board or a printed circuit board, the circuit board is divided into three categories of a single panel, a double panel and a multilayer circuit board according to the number of layers, the circuit board is the most common device of electronic equipment, each electronic element on the circuit board respectively executes work to obtain the function of an electronic product, because in practical application, specific data runs in the electronic elements on the circuit board and data signals are transmitted by circuit routing on the circuit board, the way of stealing important data by lawless persons is often formed, so how to protect the data in the circuit board from being stolen becomes the aspect of circuit board protection, the protection means for the circuit board mostly adopts a self-destruction mode, namely when the circuit board is in an attacked state, a self-destruction program is triggered, the existing general protection means is complex in structure, high in implementation cost and secondary damage exists in the actual self-destruction mode, such as the generation of sparks, explosions, etc., the risk factor is too high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-protection type safety circuit board, which adopts a brand-new hidden self-destruction structural scheme, thereby not only completely eradicating the acquisition of circuit components and circuit wiring positions from the appearance, but also realizing self-protection by carrying out impact burning on key circuit components through high voltage when being attacked.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a self-protection type safety circuit board, which comprises a substrate body, a high-voltage power supply, a protective cover and trigger pieces; the upper surface of the substrate body is printed with circuit wiring and used for mounting each circuit component;
the structure of each trigger piece is the same, each trigger piece comprises an insulating rod, an insulating seat, a conducting strip and two wires, wherein in the structure of each trigger piece, one end of the insulating rod is fixedly butted with the top surface of the insulating seat, the insulating rod is vertical to the surface of the insulating seat, the insulating rod penetrates through the surface of the conducting strip, the insulating rod and the conducting strip are fixed with each other, the conducting strip is parallel to the surface of the insulating seat, and the two wires wrap the insulating layer;
the surface of the protective cover is a plane, the protective cover is covered on the circuit wiring and each circuit component on the upper surface of the substrate body, and the edge of the covering opening of the protective cover is fixedly connected with the upper surface of the substrate body; each trigger piece is positioned in the protective cover, the end part of the insulating rod in each trigger piece, which is back to the insulating base, is fixedly connected with the inner top surface of the protective cover, each insulating rod is vertical to the inner top surface of the protective cover, the position of the insulating base in each trigger piece corresponds to the upper surface of the substrate body and the arrangement position of the non-circuit component, the bottom surface of the insulating base in each trigger piece is arranged on the upper surface of the substrate body, the bottom surface of the insulating base in each trigger piece is not fixedly connected with the upper surface of the substrate body, one end of each wire in the structure of each trigger piece is exposed, is not contacted with each other and is suspended right above the corresponding conducting strip, each wire is arranged along the upper surface of the substrate body, and the other end of each wire forms two wire ends corresponding to the trigger piece; two lead ends of each trigger piece are exposed and are connected in parallel to form a trigger parallel connection body, the lead ends of each trigger piece connected with each other form two lead ends of the trigger parallel connection body, and the two lead ends of each trigger piece are not contacted with circuit wiring on the upper surface of the substrate body;
the voltage of the high-voltage power supply is not less than 25V, the high-voltage power supply is fixedly arranged on the inner top surface of the protective cover, the positive electrode of the high-voltage power supply is connected in series to trigger the parallel connection body and then is sequentially connected in series with the power taking end of each preset appointed circuit component on the upper surface of the substrate body, and then is in butt joint with the negative electrode of the high-voltage power supply.
As a preferred technical scheme of the invention: the heat-conducting insulating resin layer is arranged on the lower surface of the substrate body in a butt joint mode, and heat dissipation holes which penetrate through the two-layer structure are arranged aiming at the upper layer structure and the lower layer structure formed by the substrate body and the heat-conducting insulating resin layer respectively, and do not pass through the installation position of a circuit component and the route position of circuit wiring on the substrate body.
As a preferred technical scheme of the invention: the heat-conducting insulating resin layer contains a boron nitride filler.
As a preferred technical scheme of the invention: the protective cover is made of heat conducting materials.
Compared with the prior art, the self-protection type safety circuit board has the following technical effects by adopting the technical scheme:
the self-protection type safety circuit board designed by the invention adopts a brand new hidden self-destruction structural scheme, realizes the shielding protection of the circuit wiring and each circuit component on the upper surface of the substrate body through the protective cover, avoids the acquisition of lawless persons to the positions of the circuit components and the circuit wiring, meanwhile, a high-voltage power supply is introduced, and each trigger is designed to be distributed at each position between the protective cover and the substrate body, the conducting plate in each trigger and two corresponding conducting wire contacts form a displacement detection trigger core, when the protective cover is attacked and moved, the insulating rod in one of the trigger pieces can be driven to move, so that the conducting strip is in contact connection with the corresponding two wire contacts, the circuit board self-protection structure is communicated to realize the impact burning of a high-voltage power supply on key circuit components, completes self-protection, reduces the implementation cost of the circuit board self-protection structure, and effectively improves the safety of circuit board self-protection.
Drawings
FIG. 1 is a schematic diagram of a self-protection type safety circuit board according to the present invention;
FIG. 2 is a schematic diagram of the high voltage power connection in the self-protected safety circuit board according to the present invention.
The heat dissipation structure comprises a substrate body 1, a high-voltage power supply 2, a protective cover 3, a circuit component 4, an insulating rod 5, an insulating seat 6, a conducting strip 7, a conducting wire 8, a heat conduction insulating resin layer 9 and heat dissipation holes 10.
Detailed Description
The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention designs a self-protection type safety circuit board, which in practical application, as shown in fig. 1, specifically comprises a substrate body 1, a high-voltage power supply 2, a protective cover 3, a heat-conducting insulating resin layer 9 and triggering parts; the upper surface of the substrate body 1 is printed with circuit wiring and used for mounting each circuit component 4.
The structure of each trigger is the same each other, and each trigger all includes insulator spindle 5, insulator seat 6, conducting strip 7 and two wires 8 respectively, wherein, in the structure of each trigger, the top surface of insulator spindle 5's wherein one end is fixed butt joint insulator seat 6, and insulator spindle 5 is perpendicular with insulator seat 6 surface mutually, insulator spindle 5 passes conducting strip 7 surface, and insulator spindle 5 is fixed mutually with conducting strip 7 each other to and conducting strip 7 is parallel with insulator seat 6 surface, and two wires 8 all wrap up the insulating layer.
The surface of the protective cover 3 is a plane, the protective cover 3 covers the circuit wiring and each circuit component 4 on the upper surface of the substrate body 1, and the edge of the covering opening of the protective cover 3 is fixedly connected with the upper surface of the substrate body 1; each trigger piece is positioned in the protective cover 3, the end part of the insulating rod 5 in each trigger piece, which is back to the insulating base 6, is fixedly connected with the inner top surface of the protective cover 3, each insulating rod 5 is vertical to the inner top surface of the protective cover 3, the position of the insulating base 6 in each trigger piece corresponds to the upper surface of the substrate body 1 and the arrangement position of the non-circuit component 4, the bottom surface of the insulating base 6 in each trigger piece is arranged on the upper surface of the substrate body 1, the bottom surface of the insulating base 6 in each trigger piece is not fixedly connected with the upper surface of the substrate body 1, in the structure of each trigger piece, one end of each wire 8 is exposed, and is in non-contact with each other and suspended right above the corresponding conducting strip 7, each wire 8 is arranged along the upper surface of the substrate body 1, and the other end of each wire 8 forms two wire ends corresponding to the trigger piece; two lead ends of each trigger piece are exposed and connected in parallel to form a trigger parallel body, the lead ends of each trigger piece connected with each other form two lead ends of the trigger parallel body, and the two lead ends of each trigger piece are not contacted with the circuit wiring on the upper surface of the substrate body 1.
The voltage of the high-voltage power supply 2 is not less than 25V, the high-voltage power supply 2 is fixedly arranged on the inner top surface of the protective cover 3, as shown in figure 2, the positive electrode of the high-voltage power supply 2 is connected in series with the power taking end of each preset appointed circuit component 4 on the upper surface of the substrate body 1 after being triggered in parallel and connected in series in sequence, and then the negative electrode of the high-voltage power supply 2 is butted.
The heat-conducting insulating resin layer 9 is butt-jointed and arranged on the lower surface of the substrate body 1, and heat dissipation holes 10 which respectively penetrate through the two-layer structure are arranged aiming at the upper and lower two-layer structure formed by the substrate body 1 and the heat-conducting insulating resin layer 9, and the heat dissipation holes 10 do not pass through the installation position of the circuit component 4 on the substrate body 1 and the path position of circuit wiring.
The designed self-protection safety circuit board is applied to practice, firstly, during design and processing, for each trigger piece, firstly, the insulating rod 5, the insulating seat 6 and the conducting strip 7 are connected according to the structure aiming at each trigger piece, then, the bottom surface of the insulating seat 6 of each trigger piece is arranged at the position where the upper surface of the substrate body 1 and the non-circuit component 4 are arranged, the bottom surface of each insulating seat 6 is not fixedly connected with the position arranged on the upper surface of the substrate body 1, then, the top end of the insulating rod 5 in each trigger piece is coated with the strong glue, then, the high-voltage power supply 2, each trigger piece and the key circuit component 4 are connected, finally, the protective cover 3 is covered on the circuit wiring on the upper surface of the substrate body 1 and each circuit component 4, and the edge of the cover opening of the protective cover 3 is fixedly connected with the upper surface of the substrate body 1, the inner top surface of the protective cover 3 is fixedly connected with the end parts of the insulating rods 5 based on the super glue, so that the structure is constructed.
When the self-protection type safety circuit board is attacked in practical application, firstly an attacker cannot judge the positions of the circuit components 4 and the circuit wiring on the substrate body 1 from the outside, only the protection cover 3 can be attacked firstly, when the protection cover 3 is attacked, namely the protection cover 3 is loosened, because a plurality of trigger parts are arranged between the protection cover 3 and the substrate body 1, when the protection cover 3 is loosened, as long as the insulating rod 5 of any one trigger part is displaced, the conducting strip 7 on the trigger part can be communicated with the contacts of the corresponding two conducting wires 8, namely the power transmission of the high-voltage power supply 2 to each circuit component 4 connected with the circuit is communicated, and because the voltage of the high-voltage power supply 2 is not less than 25V, the voltage transmitted by the high-voltage power supply 2 directly attacks each connected circuit component 4 so as to be burnt out, the self-protection purpose is realized.
In practical application, due to the design of the protective cover 3, for the substrate body 1 and the heat problem generated by the work of each circuit component 4 on the substrate body, the heat-conducting insulating resin layer 9 is introduced in the design, so that the heat dissipation operation is realized, meanwhile, for the heat-conducting insulating resin layer 9, a boron nitride filler is further added in the heat-conducting insulating resin layer, so that the heat dissipation effect can be further improved, in addition, for the upper layer structure and the lower layer structure formed by the substrate body 1 and the heat-conducting insulating resin layer 9, the heat dissipation holes 10 which respectively penetrate through the two layers of structures are introduced, the penetration of heat dissipation airflow in the environment where the circuit board is arranged is realized, and the.
The self-protection safety circuit board designed by the technical scheme adopts a brand-new hidden self-destruction structure scheme, realizes the shielding protection of the circuit wiring on the upper surface of the substrate body 1 and each circuit component 4 through the protective cover 3, avoids the acquisition of the circuit components 4 and the circuit wiring positions by lawless persons, simultaneously introduces the high-voltage power supply 2, designs each trigger to be distributed at each position between the protective cover 3 and the substrate body 1, forms a displacement detection trigger core by the conducting strip 7 and the corresponding two wire 8 contacts in each trigger, can drive the displacement of the insulating rod 5 in one trigger when the protective cover 3 is attacked and moved, leads the conducting strip 7 to be in contact with the corresponding two wire 8 contacts, namely is in contact with the key circuit components 4 to realize the impact burnout of the high-voltage power supply 2, completes the self-protection, and reduces the implementation cost of the self-protection structure of the circuit board, the safety of circuit board self-protection is effectively improved.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (4)

1. The utility model provides a self-protection formula safety circuit board which characterized in that: the device comprises a substrate body (1), a high-voltage power supply (2), a protective cover (3) and trigger pieces; the upper surface of the substrate body (1) is printed with circuit wiring and used for mounting each circuit component (4);
the structure of each trigger piece is the same as each other, each trigger piece respectively comprises an insulating rod (5), an insulating seat (6), a conducting strip (7) and two wires (8), wherein in the structure of each trigger piece, one end of the insulating rod (5) is fixedly butted with the top surface of the insulating seat (6), the insulating rod (5) is vertical to the surface of the insulating seat (6), the insulating rod (5) penetrates through the surface of the conducting strip (7), the insulating rod (5) and the conducting strip (7) are fixed with each other, the conducting strip (7) is parallel to the surface of the insulating seat (6), and the two wires (8) are wrapped by the insulating layer;
the surface of the protective cover (3) is a plane, the protective cover (3) covers the circuit wiring on the upper surface of the substrate body (1) and each circuit component (4), and the edge of the covering opening of the protective cover (3) is fixedly connected with the upper surface of the substrate body (1); each trigger piece is positioned in the protective cover (3), the end part of the insulating rod (5) in each trigger piece, which is back to the insulating base (6), is fixedly connected with the inner top surface of the protective cover (3), each insulating rod (5) is vertical to the inner top surface of the protective cover (3), the position of the insulating seat (6) in each trigger corresponds to the upper surface of the substrate body (1) and the arrangement position of the non-circuit component (4), the bottom surface of the insulating seat (6) in each trigger is arranged on the upper surface of the substrate body (1), the bottom surface of the insulating seat (6) in each trigger piece is not fixedly connected with the upper surface of the substrate body (1), one end of each conducting wire (8) in the structure of each trigger piece is exposed, the conducting wires (8) are arranged along the upper surface of the substrate body (1), and the other ends of the conducting wires (8) form two conducting wire ends corresponding to the trigger piece; two lead ends of each trigger piece are exposed and are connected in parallel to form a trigger parallel body, the lead ends of each trigger piece connected with each other form two lead ends of the trigger parallel body, and the two lead ends of each trigger piece are not contacted with the circuit wiring on the upper surface of the substrate body (1);
the voltage of the high-voltage power supply (2) is not less than 25V, the high-voltage power supply (2) is fixedly arranged on the inner top surface of the protective cover (3), the positive electrode of the high-voltage power supply (2) is connected in series to trigger the parallel connection body and then is sequentially connected in series with the power taking end of each preset appointed circuit component (4) on the upper surface of the substrate body (1), and then is in butt joint with the negative electrode of the high-voltage power supply (2).
2. The self-protected safety circuit board of claim 1, wherein: the heat-conducting insulating resin layer is characterized by further comprising a heat-conducting insulating resin layer (9), wherein the heat-conducting insulating resin layer (9) is in butt joint with the lower surface of the substrate body (1), and heat dissipation holes (10) which respectively penetrate through the two layers of structures are arranged aiming at the upper layer structure and the lower layer structure formed by the substrate body (1) and the heat-conducting insulating resin layer (9), and the heat dissipation holes (10) do not pass through the installation positions of circuit components (4) on the substrate body (1) and the path positions of circuit wiring.
3. The self-protected safety circuit board of claim 1, wherein: the heat-conducting insulating resin layer (9) contains a boron nitride filler.
4. The self-protected safety circuit board of claim 1, wherein: the protective cover (3) is made of heat conducting materials.
CN201910938926.8A 2019-09-30 2019-09-30 Self-protection type safety circuit board Active CN110708862B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910938926.8A CN110708862B (en) 2019-09-30 2019-09-30 Self-protection type safety circuit board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910938926.8A CN110708862B (en) 2019-09-30 2019-09-30 Self-protection type safety circuit board

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CN110708862A true CN110708862A (en) 2020-01-17
CN110708862B CN110708862B (en) 2021-09-17

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CN201910938926.8A Active CN110708862B (en) 2019-09-30 2019-09-30 Self-protection type safety circuit board

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201208541A (en) * 2010-08-03 2012-02-16 Zyxel Communications Corp Device having anti-demolition function
WO2015131469A1 (en) * 2014-03-06 2015-09-11 中兴通讯股份有限公司 Housing of electronic product with non-removable battery built therein
US20180103538A1 (en) * 2015-09-25 2018-04-12 International Business Machines Corporation Tamper-respondent assemblies with bond protection
CN207976963U (en) * 2018-04-09 2018-10-16 上海商米科技有限公司 Electronic equipment antiwithdrawal device and electronic equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201208541A (en) * 2010-08-03 2012-02-16 Zyxel Communications Corp Device having anti-demolition function
WO2015131469A1 (en) * 2014-03-06 2015-09-11 中兴通讯股份有限公司 Housing of electronic product with non-removable battery built therein
US20180103538A1 (en) * 2015-09-25 2018-04-12 International Business Machines Corporation Tamper-respondent assemblies with bond protection
CN207976963U (en) * 2018-04-09 2018-10-16 上海商米科技有限公司 Electronic equipment antiwithdrawal device and electronic equipment

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