CN203616759U - Password security random variation numeric keypad - Google Patents
Password security random variation numeric keypad Download PDFInfo
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- CN203616759U CN203616759U CN201320549676.7U CN201320549676U CN203616759U CN 203616759 U CN203616759 U CN 203616759U CN 201320549676 U CN201320549676 U CN 201320549676U CN 203616759 U CN203616759 U CN 203616759U
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- keycap
- keypad
- password
- conductive rubber
- fixedly mounted
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Abstract
The utility model relates to a password security random variation numeric keypad. The keypad comprises function keys, number keys and a control circuit. Each key comprises a keycap, a digital display tube, a conductive rubber trigger, a support sleeve, a support rod, a thin film contact plate and a circuit board. The thin film contact plate is fixedly disposed on the circuit board. The conductive rubber trigger is fixedly disposed on the thin film contact plate. The keycap is slidingly disposed on the conductive rubber trigger through guiding of the support sleeve and the support rod. The digital tube is fixedly disposed on the position, which is disposed below the middle part of the keycap, of the thin film contact plate. Aiming at the defects of the conventional password keypad, the keypad utilizes an 89C51 single-chip microcomputer to generate random numbers in a method of combination of an inner timer and interrupt. The dynamic random numeric security password keypad enables numbers ranging from 0 to 9 displayed by seven LED nixie tubes to be randomly changed each time, so that the keypad can be applied to password input of an ATM, and widely applied to devices utilizing keypads for password input, such as a POS, a safe case and an antitheft door. The keypad makes great contributions to national economy development and citizen information protection.
Description
Technical field
The utility model relates to the keyboard that ATM cash dispenser, POS machine, self-aided terminal etc. relate to Password Input, especially a kind of cipher anti theft random variation numeric keypad.
Technical background
Along with the development of economy and technology, the equipment such as ATM cash dispenser, POS machine, self-aided terminal are day by day universal, in offering convenience to people, also have the potential safety hazards such as password leakage.Present stage, what in most financial sector, use is traditional input keyboard.The keyboard value of this keyboard key is fixed, confidentiality and poor stability, and offender just can analyze user's numerical information separately to the operation of each key mapping by observing user.Various password theft cases are in rising trend in recent years, brought very large economic loss to country and individual.Meanwhile, due to China's present case, need the public arena of Password Input can not guarantee the distance of effectively maintaining secrecy in bank, store or other, people's property safety has been subject to great threat.
Along with security, confidentiality, the accuracy of people to information transmission had higher requirement, particularly, in the time using unattended finance self-help terminal, more need a kind of safe and reliable input mode.
By retrieval, not yet find the patent document identical with the utility model application.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of cipher anti theft random variation numeric keypad with key mapping numeral stochastic and dynamic variation function is provided.
The purpose of this utility model is achieved by the following technical solution:
A kind of cipher anti theft random variation numeric keypad, comprise function button, digital keys and control circuit, the contour structures of two class buttons is identical with standard cipher input keyboard size, it is characterized in that: described button comprises keycap, charactron display, conductive rubber trigger, support set, support column, film touch panel and circuit board, on circuit board, be fixedly mounted with film touch panel, on film touch panel, be fixedly mounted with conductive rubber trigger, on conductive rubber trigger, pass through support set, the support column guiding keycap that is slidably installed, on film touch panel below keycap middle part, be fixedly mounted with charactron.
And, be fixedly mounted with four support sets the film touch panel of charactron display periphery is uniform, bottom is all coaxially fixedly mounted with a conductive rubber trigger in each support set, the coaxial corresponding setting-in keycap of each support set internal upper part the be fixedly mounted with support column of going to the bottom, and support column and support set are for being slidably installed.
And transparent, the transparent transmittance around in keycap middle part of described button reduces, the complete opaque form of the brim of a hat.
And, being shaped with a dogging 5 at a side of support column lower end, this dogging is installed on the made hook groove of support set in the upper limit site of keycap.
And, described circuit board control circuit comprises 89C51 single-chip microcomputer, data latches, charactron display, digital keys and function button, the random number producing by 89C51 single-chip microcomputer, make the each position random variation of 0-9 numeral showing on keyboard, wait for Password Input, and press " confirmation " button and can again change the position of ten random numbers.
And the random number that each 89C51 single-chip microcomputer produces is presented at above charactron by data latches and with the form of static scanning; Button adopts line to be connected with single-chip microcomputer corresponding ports respectively with alignment, determines that the position that button is pressed realizes the input to respective digital, and show " * " number at liquid crystal display and corresponding password receiver simultaneously with line scanning method, realizes cryptoguard; After input numeral, after confirming, send password by 89C51 single-chip microcomputer by " confirmation " function button, the position distribution of the random number of all buttons will regenerate simultaneously, for next Password Input is prepared, i.e. and this EO.
And, described 89C51 single-chip microcomputer is every display with bright ten LED seven segment digital tubes of one one land wheel flow point by data latches, the position choosing that is each LED seven segment digital tubes is chosen in turn, multiple LED seven segment digital tubes share one group of Duan Xuan, section select data only contraposition select selected LED seven segment digital tubes effective.
Advantage of the present utility model and good effect are:
1, the defect that the utility model exists for conventional cipher keyboard, utilize timer internal and the method for interrupting combination to produce random number by 89C51 single-chip microcomputer, at the dynamic random numeral anti-theft cipher keyboard of the each position random variation of the 0-9 of LED seven segment digital tubes demonstration numeral, not only can be applicable to the Password Input of ATM, also can be widely used in other various equipment that utilizes keyboard input password, as POS machine, safety cabinet, antitheft door etc.USB interface can realize plug and play simultaneously; improve the dirigibility of keyboard; high speed data transmission can be saved time; meet user uses keyboard demand in different occasions; realize random digit and dynamically show to guarantee the security of inputting interface, the protection of the development to national economy and citizen's information has great meaning.
2, the utility model utilizes timer internal and the method for interrupting combination to produce random number by 89C51 single-chip microcomputer, makes on keyboard, to show 0-9 the each position random variation of numeral, and carries out Password Input by corresponding button.The keycap top of each button adopts central, clear and transmittance reduction around, and side is carried out completely opaque, reduces the brightness of LED seven segment digital tubes simultaneously, and this can play energy-conserving action, and its entirety can improve the security of Password Input again.
Accompanying drawing explanation
Fig. 1 be the utility model one key vertical view;
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional view;
Fig. 3 is control circuit block scheme of the present utility model.
Specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail by specific embodiment.It should be noted that, the present embodiment is descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of cipher anti theft random variation numeric keypad, comprise function button, digital keys and control circuit, the contour structures of two class buttons is identical with standard cipher input keyboard size, innovative point of the present utility model is the improvement of button and control single channel, and therefore the present embodiment is only narrated the structure of button and the formation of control circuit.
Innovative point of the present utility model is:
1, described button comprises keycap 2, charactron display 3, conductive rubber trigger 6, support set 1, support column 4, film touch panel 7 and circuit board 8, referring to Fig. 1,2, on circuit board, be fixedly mounted with film touch panel, on film touch panel, be fixedly mounted with conductive rubber trigger, on conductive rubber trigger, by support set, the support column guiding keycap that is slidably installed, on the film touch panel below keycap middle part, be fixedly mounted with charactron.Transparent, the transparent transmittance around in keycap middle part of button reduces, the complete opaque form of the brim of a hat; Charactron display adopts LED seven segment numerical tube display; between this charactron display and keycap, there is certain spacing distance; cause the password of charactron display to show it can only is that human body could be in sight in the situation that approaching vertical direct-view, so greatly improved the protective value of password.
At the uniform support set that is fixedly mounted with of film touch panel of charactron display periphery, the support set showing in the present embodiment accompanying drawing is four, no matter which place of keycap finger encounter can make like this user use time, can realize the input function of password, the sensitivity that has improved single button; Bottom is all coaxially fixedly mounted with a conductive rubber trigger in each support set, the coaxial corresponding setting-in keycap of each support set internal upper part the be fixedly mounted with support column of going to the bottom, and support column and support set are for being slidably installed.For fear of keycap from dropping, be shaped with a dogging 5 at a side of support column lower end, this dogging is installed on the made hook groove of support set in the upper limit site of keycap.
2, the structure of described circuit board control circuit is referring to Fig. 3, comprise 89C51 single-chip microcomputer, data latches, charactron display, digital keys and function button, 89C51 single-chip microcomputer utilizes its timer internal and the method for interrupting combination to produce random number, and read by interrupt function numerical value that timer produces in technical scope, use multiple combinations simultaneously, dynamically adjust each combination span, realize one one the bright bits per inch code of land wheel flow point tube display by data latches, the position choosing that is each charactron display is chosen in turn, multiple charactron displays share one group of Duan Xuan, section selects the data charactron display that only contraposition is chosen effective.The line of digital keys is connected with the corresponding I/O port of 89C51 single-chip microcomputer respectively with alignment, takes line scanning method to programme by 89C51 single-chip microcomputer.When user is by the display device of cipher anti theft keyboard, watch the information of key mapping numeral, and find the corresponding password figure of each key mapping, and 89C51 single-chip microcomputer carries out real time scan to each key mapping of digital keys, after confirming have digital keys to be pressed, 89C51 single-chip microcomputer reads key assignments, and preserves key assignments; " confirmation " key of pressing afterwards function button completes the input of this password, the position distribution of the cryptographic random number above charactron display regenerates, if mistake appears in Password Input, user can be realized the removing of password and be re-entered by " cancellation " key in function button.In the time that keyboard was not used in 5 minutes, system will be in holding state, and the Presentation Function of charactron display is closed, and in the time that user need to input password, charactron display function is opened.The output port of this device password adopts general now USB interface, only need be connected with external unit, after equipment energising, can work use.
This keyboard has 12 buttons, a liquid crystal display, wherein 12 ten numeral variation buttons and two function buttons that button is 0-9, scan key mapping corresponding to each charactron in conjunction with realizing with data latches by 89C51 single-chip microcomputer, determine the numeral of input.The random number producing by 89C51 single-chip microcomputer, the each position random variation of 0-9 numeral that makes to show on keyboard, waits for Password Input, and presses " confirmation " key and can again change the position of ten random numbers.
The random number that each 89C51 single-chip microcomputer produces is presented at above charactron by data latches and with the form of static scanning; Button adopts line to be connected with single-chip microcomputer corresponding ports respectively with alignment, determines that with line scanning method the position that button is pressed realizes the input to respective digital, and demonstration " * " number on liquid crystal display and corresponding password receiver, realizes cryptoguard; After input numeral, after confirming, send password by 89C51 single-chip microcomputer by " confirmation " function button, the position distribution of the random number of all buttons will regenerate simultaneously, for next Password Input is prepared, i.e. and this EO.Liquid crystal display is 1602LCD(blueness) liquid crystal display.
89C51 single-chip microcomputer is every display with bright ten LED seven segment digital tubes of one one land wheel flow point by data latches, the position choosing that is each LED seven segment digital tubes is chosen in turn, multiple LED seven segment digital tubes share one group of Duan Xuan, section select data only contraposition select selected LED seven segment digital tubes effective.
Single led seven segment digital tubes is carried out downsizing and is expanded edge and add that in outer rim keycap makes overall appearance size the same with standard input button size; The edge surrounding that single led seven segment digital tubes expands respectively has four sensitive contacts, no matter four identical contacts of function are for keycap from which direction is pressed and can realizes the transmission of signal, thereby has improved the sensitivity of single button.
If keyboard did not use in 5 minutes, LED seven segment digital tubes and LCD(blueness) liquid crystal display brightness extinguishes completely, system is in holding state, numeral shows closes, and in the time that user need to input password, numeral demonstration, LED seven segment digital tubes and LCD(blueness) liquid crystal display unlatching: entirety adopts energy-conservation form design.The keyboard body being connected with external unit adopts general now usb communication agreement, realizes the defeated soon fast of information, improves versatility and the market competitiveness of this product data transmission.
USB interface can realize plug and play, and the mobility of keyboard strengthens, and is user-friendly to.The transmission speed of data and computer improves, and has shortened the working time, has improved efficiency.
Principle of work of the present utility model is:
This product is the antitheft keyboard of a kind of novel cipher based on 89C51 chip microcontroller key mapping and digital dynamic demonstration, produce random number by single-chip microcomputer, make the each position random variation of 0-9 numeral that on keyboard, LED seven segment digital tubes shows, single-chip microcomputer scans the corresponding key mapping of each charactron, the numeral of determining input, when use, is first connected to computer USB port by USB connection data line, realize intelligent keyboard and be connected and show relevant information, complete operation with computer data.Keyboard did not use in 5 minutes, and system is in holding state, and numeral shows closes, and reaches energy-conservation requirement.
Formed by keyboard body and the USB interface that is arranged on keyboard body side, be divided into load module, control module, display module and output module.
Load module comprises digital keys " 0-9 " and function button " confirmation ", " cancellation " totally 12 buttons.Adopt matrix keyboard, can realize the input of numerical information, input information is complete presses " confirmation " key, and data just write control module.Just can cancel this input message if " cancellation " key is pressed in input error, produce other one group of random digit by control module, again input.
Control module is core of the present utility model, by 89C51 single-chip microcomputer, several modules is organically combined.Control module produces random digit by programmed instruction, delivers to data latches, then delivers to respectively each key mapping, and realizes the dynamic demonstration of random digit by display decoder; Each digital keys is connected with data latches simultaneously, and input message is delivered to control module by data latches, by data-switching, utilizes data line that input value is delivered to Computer display window, is convenient to user and observes input message.
Display module can be realized the dynamic demonstration of random digit, and control module, by order-driven LED charactron, completes demonstration.Do not receive input instruction meeting in 5 minutes and automatically enter the dormant state of low-power consumption when keyboard, display module is closed, and restarts display module, energy-conserving and environment-protective next time need to input time.
Output module is responsible for communicating by letter of control module and computing machine.Just can be sent to computing machine by data line and USB interface input data, facilitate user's cross-check information.USB interface can realize plug and play simultaneously, has greatly improved the dirigibility of keyboard, has met user and has used the demand of keyboard in different occasions, and improved the speed of data transmission, has saved the time.
Claims (5)
1. a cipher anti theft random variation numeric keypad, comprise function button, digital keys and control circuit, the contour structures of two class buttons is identical with standard cipher input keyboard size, it is characterized in that: described button comprises keycap, charactron display, conductive rubber trigger, support set, support column, film touch panel and circuit board, on circuit board, be fixedly mounted with film touch panel, on film touch panel, be fixedly mounted with conductive rubber trigger, on conductive rubber trigger, pass through support set, the support column guiding keycap that is slidably installed, on film touch panel below keycap middle part, be fixedly mounted with charactron.
2. cipher anti theft random variation numeric keypad according to claim 1, it is characterized in that: be fixedly mounted with four support sets the film touch panel of charactron display periphery is uniform, in each support set, bottom is all coaxially fixedly mounted with a conductive rubber trigger, the coaxial corresponding setting-in keycap of each support set internal upper part the be fixedly mounted with support column of going to the bottom, support column and support set are for being slidably installed.
3. cipher anti theft random variation numeric keypad according to claim 1, is characterized in that: transparent, the transparent transmittance around in keycap middle part of described button reduces, the complete opaque form of the brim of a hat.
4. cipher anti theft random variation numeric keypad according to claim 2, is characterized in that: be shaped with a dogging (5) at a side of support column lower end, this dogging is installed on the made hook groove of support set in the upper limit site of keycap.
5. cipher anti theft random variation numeric keypad according to claim 1, it is characterized in that: described circuit board control circuit comprises 89C51 single-chip microcomputer, data latches, charactron display, digital keys and function button, the random number producing by 89C51 single-chip microcomputer, make the each position random variation of 0-9 numeral showing on keyboard, wait for Password Input, and press " confirmation " button and can again change the position of ten random numbers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549676.7U CN203616759U (en) | 2013-09-05 | 2013-09-05 | Password security random variation numeric keypad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549676.7U CN203616759U (en) | 2013-09-05 | 2013-09-05 | Password security random variation numeric keypad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203616759U true CN203616759U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320549676.7U Expired - Fee Related CN203616759U (en) | 2013-09-05 | 2013-09-05 | Password security random variation numeric keypad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203616759U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513170A (en) * | 2014-10-07 | 2016-04-20 | 长沙京平泰安防科技有限公司 | Cipher safe antitheft system |
| CN105649470A (en) * | 2016-03-22 | 2016-06-08 | 百色学院 | Password control system of intelligent safety box |
-
2013
- 2013-09-05 CN CN201320549676.7U patent/CN203616759U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513170A (en) * | 2014-10-07 | 2016-04-20 | 长沙京平泰安防科技有限公司 | Cipher safe antitheft system |
| CN105649470A (en) * | 2016-03-22 | 2016-06-08 | 百色学院 | Password control system of intelligent safety box |
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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: 20140528 Termination date: 20150905 |
|
| EXPY | Termination of patent right or utility model |