CN204883931U - Prevent to carry out safety arrangement that steals secret information through button on mainboard contact - Google Patents
Prevent to carry out safety arrangement that steals secret information through button on mainboard contact Download PDFInfo
- Publication number
- CN204883931U CN204883931U CN201520600935.3U CN201520600935U CN204883931U CN 204883931 U CN204883931 U CN 204883931U CN 201520600935 U CN201520600935 U CN 201520600935U CN 204883931 U CN204883931 U CN 204883931U
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- CN
- China
- Prior art keywords
- mainboard
- circuit
- protection
- contact
- mcu
- Prior art date
- 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.)
- Expired - Fee Related
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052709 silver Inorganic materials 0.000 claims abstract description 36
- 239000004332 silver Substances 0.000 claims abstract description 36
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 229920006267 polyester film Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract 4
- 238000009434 installation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
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- Input From Keyboards Or The Like (AREA)
Abstract
The utility model discloses a prevent to carry out safety arrangement that steals secret information through button on mainboard contact, the MCU who is equipped with digital district button contact and takes measuring and self -destruct circuit on the mainboard, the snap dome conductive film covers on the mainboard, is equipped with the protection circuit board of the electrically conductive silver -colored circuit in area between snap dome conductive film and keyboard, among the electrically conductive detection circuitry of silver -colored line connection in MCU, be equipped with the protection contact of a plurality of connections in detection circuitry on the mainboard, compressed tightly on the mainboard around protecting the circuit board bottom to be provided with a plurality of connecting terminals that correspond with each protection contact, protect the circuit board after the keyboard installation, make each connecting terminal contact with each protection contact respectively and switch on to make detection circuitry switch on. Silver -colored circuit opens circuit or arbitrary connecting terminal and protection contact separation if electrically conduct, makes the detection circuitry disconnection, and MCU will start the self -destruct circuit and clear away the data of saving among the MCU, the utility model has the advantages that: improve financial payment terminal equipment's safe performance.
Description
Technical field
The utility model relates to thief-proof close technical protection field on financial transaction terminal equipment, particularly relates to a kind of preventing and carries out the safety guard of stealing secret information by the key contacts on mainboard.
Background technology
Along with the development & application of infotech, financial payment has been widely used in daily life, is mostly all equipped with financial payment terminal equipment in regular places of business such as most of supermarket, brand shops, as pos machine etc.People can carry out financial payment by financial payment terminal equipment and businessman easily in shopping process, financial payment relates to the data such as the Financial Information of user, once be stolen, consequence is very serious, and thus the security performance of financial payment terminal equipment also more and more comes into one's own.Keyboard in financial payment terminal equipment carries the input service of password in user's financial payment, especially needs to be subject to strict protection.Also unsatisfactory to the protection of keyboard at present; the person of stealing secret information can utilize the aid such as pocket knife, cut to cut button; then by the keyboard mounting hole on keyboard case; each key contacts of numeric keypad on mainboard inside the equipment of stealing secret information and keyboard is conducted; namely by attacking the key contacts on mainboard; obtain the data messages such as the financial password of user easily, the safe application performance of financial payment terminal equipment cannot be ensured well.
Utility model content
The required technical matters solved of the utility model is: provide a kind of can preventing to carry out the safety guard of stealing secret information by the key contacts on mainboard, thus improve the safe application performance of financial payment terminal equipment.
For solving the problem, the technical solution adopted in the utility model is: described preventing carries out the safety guard of stealing secret information by the key contacts on mainboard, comprise: mainboard, mainboard is provided with some digital block key contacts corresponding with each button of numeric keypad on keyboard, each digital block key contacts forms key contacts region, digital block, digital block key contacts overlying regions on mainboard is coated with the young sheet conducting film of pot, on pressing keyboard, numeric keypad respectively makes the young sheet contact of pot corresponding on the young sheet conducting film of pot contact conducting with corresponding digital block key contacts respectively by bond energy, it is characterized in that: the MCU being provided with band testing circuit and self-destruct circuit on mainboard, protection circuit plate is also provided with between the young sheet conducting film of pot and keyboard, protection circuit plate is provided with the conductive silver circuit obtained through pyroprocessing by conductive silver paste, conductive silver circuit in protection circuit plate is connected in the testing circuit in MCU, if the conductive silver line broken circuit in protection circuit plate makes testing circuit disconnect, MCU will start self-destruct circuit and remove the data stored in MCU, the mainboard being positioned at key contacts region, digital block surrounding is distributed with some protection contacts, each protection contact is connected in the testing circuit in MCU, the connecting terminal that some and each protection contact is corresponding is provided with bottom protection circuit plate, keyboard is installed rear protection circuit plate surrounding and is pressed on mainboard, each connecting terminal on protection circuit plate is contacted with each protection contact on mainboard conducting respectively, thus makes testing circuit conducting, the protection contact separation that the arbitrary connecting terminal after if keyboard is disassembled and loosens on protection circuit plate is corresponding with on mainboard, testing circuit all can be made to disconnect, and MCU will start self-destruct circuit and remove the data stored in MCU.
Further; aforesaid preventing carries out the safety guard of stealing secret information by the key contacts on mainboard; wherein, described protection contact is symmetrically distributed in the left and right sides in key contacts region, digital block respectively, and the protection number of contacts of every side, key contacts region, digital block is 3-8.
Further, aforesaid preventing carries out the safety guard of stealing secret information by the key contacts on mainboard, wherein, mainboard is provided with the incoming relay-protection contact that is connected with the testing circuit in MCU and contact is protected in outlet, incoming relay-protection contact number is no less than two, and outlet protection contact number is no less than two; Described protection circuit plate is be the diaphragm type flexible circuit board that base material is made by high temperature resistance polyester film, flexible circuit board is provided with at least two tunnel labyrinth-like conductive silver circuits, the inlet wire connecting terminal of each labyrinth-like conductive silver circuit and corresponding with on the mainboard respectively incoming relay-protection contact of outlet connecting terminal and outlet protect contact to contact conducting, thus make each labyrinth-like conductive silver circuit and testing circuit conducting; Arbitrary labyrinth-like conductive silver line broken circuit all can make corresponding testing circuit disconnect, and MCU can start self-destruct circuit and remove the data stored in MCU.
Further, aforesaid preventing carries out the safety guard of stealing secret information by the key contacts on mainboard, and wherein, described protection circuit plate is at least made up of two sheets of flexible wiring board.
Further, aforesaid preventing carries out the safety guard of stealing secret information by the key contacts on mainboard, and wherein, described protection circuit plate is formed through at least twice-folded by flexible circuit board.
Further, aforesaid preventing carries out the safety guard of stealing secret information by the key contacts on mainboard, and wherein, described protection circuit plate is formed through twice-folded by flexible circuit board.
The beneficial effects of the utility model are: (1) person of stealing secret information is at eject key disk casing or cut in the process of keyboard, once make the arbitrary protection contact being arranged at key contacts region, digital block surrounding be separated with the corresponding connecting terminal bottom protection circuit plate and make testing circuit disconnect, MCU will start self-destruct circuit and remove the data stored in MCU; (2) protection circuit plate forms the protective barrier being blocked in together from the keyboard mounting hole keyboard case to digital block key contacts; so just considerably increase by the keyboard mounting hole contact number block key contacts on keyboard case thus steal the difficulty of the data stored in MCU, substantially increasing the safe application performance of financial payment terminal equipment.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams preventing from being undertaken by the key contacts on mainboard the safety guard of stealing secret information described in the utility model.
Fig. 2 is and key contacts on the mainboard of keyboard corresponding part and the arrangement schematic diagram protecting contact.
Fig. 3 is the deployed condition schematic diagram of the flexible circuit board of energy doubling.
Fig. 4 is the structural representation of the bottom of protection circuit plate after flexible circuit board doubling in Fig. 3.
Fig. 5 is the structural representation at the top of protection circuit plate after flexible circuit board doubling in Fig. 3.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, technical scheme described in the utility model is described in further detail.
As depicted in figs. 1 and 2, preventing described in the present embodiment carries out the safety guard of stealing secret information by the key contacts on mainboard, comprise: mainboard 1, mainboard 1 is provided with some digital block key contacts 21 corresponding with each button of numeric keypad on keyboard, on keyboard the button of numeric keypad usually by " 0-9 " and " * " and " # " totally ten two buttons form, also ten two-digit district key contacts 21 are provided with accordingly on mainboard, each digital block key contacts 21 forms key contacts region, digital block 2, key contacts region, digital block 2 on mainboard 1 is coated with the young sheet conducting film of pot, on pressing keyboard, numeric keypad respectively makes the young sheet contact of pot corresponding on the young sheet conducting film of pot contact conducting with corresponding digital block key contacts 21 respectively by bond energy.Mainboard 1 is provided with the MCU of band testing circuit and self-destruct circuit, and MCU is called for short micro-control unit, also known as one chip microcomputer or single-chip microcomputer.Protection circuit plate 6 is also provided with between the young sheet conducting film of pot and keyboard; protection circuit plate 6 is provided with the conductive silver circuit obtained through pyroprocessing by conductive silver paste; conductive silver circuit in protection circuit plate 6 is connected in the testing circuit in MCU; if the conductive silver line broken circuit in protection circuit plate 6 makes testing circuit disconnect, MCU will start self-destruct circuit and remove the data stored in MCU.The mainboard 1 being positioned at key contacts region 2, digital block surrounding is distributed with some protection contacts 3, each protection contact 3 is connected in the testing circuit in MCU, the connecting terminal 63 that some and each protection contact 3 is corresponding is provided with bottom protection circuit plate 6, keyboard is installed rear protection circuit plate 6 surrounding and is pressed on mainboard 1, each connecting terminal 63 on protection circuit plate 6 is contacted with each protection contact 3 on mainboard 1 conducting respectively, thus makes testing circuit conducting; If the protection contact 3 that the arbitrary connecting terminal 63 after keyboard is disassembled and loosens on protection circuit plate 6 is corresponding with on mainboard 1 is separated, testing circuit all can be made to disconnect, MCU will start self-destruct circuit and remove the data stored in MCU.In the present embodiment; described protection contact 3 is symmetrically distributed in the left and right sides in key contacts region, digital block 2 respectively; the quantity of the protection contact 3 of every side, key contacts region, digital block 2 is 3-8; the present embodiment is described to be provided with four protection contacts 3 in every side, key contacts region, digital block 2; in actual manufacture process, the position of protection contact 3 and quantity can need according to practical application and determine.
In the present embodiment, conductive silver circuit in protection circuit plate 6 is as follows with the connected mode of the testing circuit in MCU: on mainboard 1, be provided with the incoming relay-protection contact that is connected with the testing circuit in MCU and contact is protected in outlet, incoming relay-protection contact number is no less than two, and outlet protection contact number is no less than two; Described protection circuit plate 6 is the diaphragm type flexible circuit board be made up for base material of high temperature resistance polyester film (PET); the high temperature resistance polyester film (PET) being distributed with conductive silver circuit has the features such as good toughness, inoxidizability, low-resistivity, low-power, low cost; make protection circuit plate 6 can protect key contacts region, digital block 2 better, greatly can also reduce the manufacturing cost of protection circuit plate 6 simultaneously.Protection circuit plate 6 in actual applications can be at least made up of two sheets of flexible wiring board, and multi-layer flexible circuit board can be formed through repeatedly folding by flexible circuit board.As shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, large flexible circuit board is by the first flexible circuit board 61 of doubling and the second flexible circuit board 62 forming of linking into an integrated entity, and the first flexible circuit board 61 and the second flexible circuit board 62 doubling form protection circuit plate 6.Protection circuit plate 6 is provided with at least two tunnel labyrinth-like conductive silver circuits; each labyrinth-like conductive silver circuit is all staggered and is distributed in the first flexible circuit board 61 and the second flexible circuit board 62, and the labyrinth-like conductive silver circuit in the first flexible circuit board 61 and the labyrinth-like conductive silver circuit spatial intersecting in the second flexible circuit board 62.The inlet wire connecting terminal of each labyrinth-like conductive silver circuit and outlet connecting terminal are all positioned in the first flexible circuit board 61, when after keyboard is installed, protection circuit plate 6 surrounding is pressed on mainboard 1, the inlet wire connecting terminal of each labyrinth-like conductive silver circuit and corresponding with on the mainboard 1 respectively incoming relay-protection contact of outlet connecting terminal and outlet protect contact to contact conducting, thus make each labyrinth-like conductive silver circuit and testing circuit conducting; Arbitrary labyrinth-like conductive silver line broken circuit all can make corresponding testing circuit disconnect, and MCU can start self-destruct circuit and remove the data stored in MCU.
To be provided with two tunnel labyrinth-like conductive silver circuits in flexible circuit board 6 in the present embodiment: the first labyrinth-like conductive silver circuit and the second labyrinth-like conductive silver circuit are described; now on mainboard 1, be provided with two incoming relay-protection contacts: the first incoming relay-protection contact 41 and the second incoming relay-protection contact 51, mainboard 1 is provided with two outlet protection contacts: the first outlet protection contact 42 and the second outlet protection contact 52.Keyboard is installed rear keyboard surrounding and is compressed protection circuit plate 6, first inlet wire connecting terminal 621 of the first labyrinth-like conductive silver circuit is contacted with the first incoming relay-protection contact 41, first outlet connecting terminal 622 and the first outlet protect contact 42 to contact, thus make corresponding testing circuit conducting; Second inlet wire connecting terminal 611 of the second labyrinth-like conductive silver circuit contacts with the second incoming relay-protection contact 51, and the second outlet connecting terminal 612 and the second outlet protect contact 52 to contact, thus makes corresponding testing circuit conducting.Arbitrary labyrinth-like conductive silver circuit is destroyed disconnection and all can causes testing circuit open circuit, and MCU can start self-destruct circuit and remove the data stored in MCU.
The beneficial effects of the utility model are: (1) person of stealing secret information is at eject key disk casing or cut in the process of keyboard, once make the arbitrary protection contact 3 being arranged at digital block contact region 2 surrounding be separated with the corresponding connecting terminal 63 bottom protection circuit plate 6 and make testing circuit disconnect, MCU will start self-destruct circuit, remove the data stored in MCU; (2) protection circuit plate 6 forms the protective barrier being blocked in together from the keyboard mounting hole keyboard case to digital block key contacts 21; so just considerably increase by the keyboard mounting hole contact number block key contacts 21 on keyboard case thus steal the difficulty of the data stored in MCU, substantially increasing the safe application performance of financial payment terminal equipment.
Claims (6)
1. prevent from carrying out the safety guard of stealing secret information by the key contacts on mainboard, comprise: mainboard, mainboard is provided with some digital block key contacts corresponding with each button of numeric keypad on keyboard, each digital block key contacts forms key contacts region, digital block, digital block key contacts overlying regions on mainboard is coated with the young sheet conducting film of pot, and on pressing keyboard, numeric keypad respectively makes the young sheet contact of pot corresponding on the young sheet conducting film of pot contact conducting with corresponding digital block key contacts respectively by bond energy; It is characterized in that: the MCU being provided with band testing circuit and self-destruct circuit on mainboard, protection circuit plate is also provided with between the young sheet conducting film of pot and keyboard, protection circuit plate is provided with the conductive silver circuit obtained through pyroprocessing by conductive silver paste, conductive silver circuit in protection circuit plate is connected in the testing circuit in MCU, if the conductive silver line broken circuit in protection circuit plate makes testing circuit disconnect, MCU will start self-destruct circuit and remove the data stored in MCU; The mainboard being positioned at key contacts region, digital block surrounding is distributed with some protection contacts, each protection contact is connected in the testing circuit in MCU, the connecting terminal that some and each protection contact is corresponding is provided with bottom protection circuit plate, keyboard is installed rear protection circuit plate surrounding and is pressed on mainboard, each connecting terminal on protection circuit plate is contacted with each protection contact on mainboard conducting respectively, thus makes testing circuit conducting; The protection contact separation that the arbitrary connecting terminal after if keyboard is disassembled and loosens on protection circuit plate is corresponding with on mainboard, testing circuit all can be made to disconnect, and MCU will start self-destruct circuit and remove the data stored in MCU.
2. carry out the safety guard of stealing secret information according to according to claim 1 preventing by the key contacts on mainboard; it is characterized in that: described protection contact is symmetrically distributed in the left and right sides in key contacts region, digital block respectively, the protection number of contacts of every side, key contacts region, digital block is 3-8.
3. carry out the safety guard of stealing secret information according to preventing described in claim 1 or 2 by the key contacts on mainboard, it is characterized in that: on mainboard, be provided with the incoming relay-protection contact that is connected with the testing circuit in MCU and contact is protected in outlet, incoming relay-protection contact number is no less than two, and outlet protection contact number is no less than two; Described protection circuit plate is be the diaphragm type flexible circuit board that base material is made by high temperature resistance polyester film, flexible circuit board is provided with at least two tunnel labyrinth-like conductive silver circuits, the inlet wire connecting terminal of each labyrinth-like conductive silver circuit and corresponding with on the mainboard respectively incoming relay-protection contact of outlet connecting terminal and outlet protect contact to contact conducting, thus make each labyrinth-like conductive silver circuit and testing circuit conducting; Arbitrary labyrinth-like conductive silver line broken circuit all can make corresponding testing circuit disconnect, and MCU can start self-destruct circuit and remove the data stored in MCU.
4. carry out the safety guard of stealing secret information according to according to claim 3 preventing by the key contacts on mainboard, it is characterized in that: described protection circuit plate is at least made up of two sheets of flexible wiring board.
5. carry out the safety guard of stealing secret information according to according to claim 3 preventing by the key contacts on mainboard, it is characterized in that: described protection circuit plate is formed through at least twice-folded by flexible circuit board.
6. carry out the safety guard of stealing secret information according to according to claim 5 preventing by the key contacts on mainboard, it is characterized in that: described protection circuit plate is formed through twice-folded by flexible circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600935.3U CN204883931U (en) | 2015-08-12 | 2015-08-12 | Prevent to carry out safety arrangement that steals secret information through button on mainboard contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600935.3U CN204883931U (en) | 2015-08-12 | 2015-08-12 | Prevent to carry out safety arrangement that steals secret information through button on mainboard contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204883931U true CN204883931U (en) | 2015-12-16 |
Family
ID=54828283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520600935.3U Expired - Fee Related CN204883931U (en) | 2015-08-12 | 2015-08-12 | Prevent to carry out safety arrangement that steals secret information through button on mainboard contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204883931U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069908A (en) * | 2015-08-12 | 2015-11-18 | 江苏和乔科技股份有限公司 | Security protection device preventing password stealing caused by key contact points on master board |
| WO2017113778A1 (en) * | 2015-12-29 | 2017-07-06 | 福建联迪商用设备有限公司 | Keyboard protection structure and pos terminal |
-
2015
- 2015-08-12 CN CN201520600935.3U patent/CN204883931U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105069908A (en) * | 2015-08-12 | 2015-11-18 | 江苏和乔科技股份有限公司 | Security protection device preventing password stealing caused by key contact points on master board |
| WO2017113778A1 (en) * | 2015-12-29 | 2017-07-06 | 福建联迪商用设备有限公司 | Keyboard protection structure and pos terminal |
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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 |
Granted publication date: 20151216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |