CN2299712Y - Intelligent electronic anti-fake stamp - Google Patents

Abstract

The utility model relates to an intelligent electronic anti-fake seal. It has a shell, in the shell the electromagnetic seal, miniature digital printer and seal controller are set. The stamping controller consists of a microprocessor unit, a keyboard, a stamping starting circuit, a buzzer, a miniature digital printer interface circuit and an electromagnetic stamp driving circuit, wherein the microprocessor unit consists of a single chip microcomputer and a hard clock timing device with a small amount of memory. The anti-fake stamp can form an anti-fake character string in the stamp, and the anti-fake character string is calculated by a microcomputer through a very complex function relation, so that the stamp has uniqueness. The seal also has the functions of anti-theft and print inspection. The anti-counterfeiting ink has the characteristics of strong anti-counterfeiting property, unique anti-counterfeiting mode and easy visual identification of the print.

Description

The intelligent electronic security stamp

The utility model is a kind of intelligent electronic security stamp.

In prior art, make pseudo-chapter and mainly contain two kinds of approach, first kind is that artificial hand is carved, this kind method is comparatively general, also is easier to.But to chapter face pattern complexity, the seal that precision is high then is difficult for forging.Second kind is by computer scanner to be swept the chapter mark to carry out analyzing and processing, and the control seal carving machine carves a seal.The precision height that this method is forged can be mixed the spurious with the genuine.At present, the false proof measure that China generally adopts mainly is trade management, is promptly controlled seal carving machine, is fixed a point to carve a seal and improve the chapter surface accuracy by the responsible institution.Obviously, in today of economic construction fast development, above-mentioned false proof measure just seems and renders a service inadequately, is easy to be sought loopholes by the lawless person, to pseudo-chapter fraud is taken place repeatedly, causes seal user's heavy losses.This has become each problem of very paying close attention to and press for solution with Zhang Danwei and national confidential office.

The purpose of this utility model is in order to improve the anti-counterfeiting performance of seal, a kind of intelligent electronic security stamp that can make trace have uniqueness to be provided.

For achieving the above object, solution of the present utility model is as follows: it has a shell, is provided with electromagnetism seal, miniature digital printer and the controller of affixing one's seal in shell.The described controller of affixing one's seal is made up of microprocessor unit, keyboard, the start-up circuit of affixing one's seal, indicator, miniature digital printer interface circuit and electromagnetism seal drive circuit, and wherein keyboard is arranged on the shell wall.Described microprocessor unit is mainly used in the check of adding a cover of the unlatching of control coded lock, the printing that forms anti-dummy string, control string and electromagnetism seal and anti-dummy string, and this microprocessor unit is made of a single-chip microcomputer, a hardware clock timing device that has a small amount of internal memory at least.

This security stamp must elder generation be imported password and be opened coded lock before using, and just can affix one's seal or check, and therefore, it has the anti-function of usurping.By the realization of the process of adding a cover, this security stamp can form anti-dummy string in trace, and this anti-dummy string is to be calculated by very complicated functional relation by microcomputer, whenever add a cover once, formed anti-dummy string is all different, so trace has uniqueness.Simultaneously, the seal information that be provided with the time of affixing one's seal in anti-dummy string, the number of times of affixing one's seal etc. can directly be judged.If not anti-dummy string directly can judge it is pseudo-chapter in the trace; If anti-dummy string is arranged, but seal information and reality in the character string is not inconsistent, and can tentatively judge it is pseudo-chapter yet; At last, utilize the uniqueness of trace, can judge the true or false of seal by check problem exactly.Find out thus, the utlity model has the characteristics that the strong and false proof mode uniqueness of antifalsification, trace are easy to identification directly perceived.

Describe structure of the present utility model and operation principle below with reference to the accompanying drawings in detail.

Fig. 1, structural representation of the present utility model.

Fig. 2, the microprocessor unit circuit diagram.

Fig. 3, printer interface circuit and electromagnetism seal drive circuit figure.

Fig. 4, false-proof digital string format figure.

Fig. 5, the trace schematic diagram.

Referring to Fig. 1, (1) is shell, is provided with electromagnetism seal (2), miniature digital printer (3), the controller of affixing one's seal (4) in this shell.Wherein said electromagnetism seal is made of magnetic valve and the atom print that is contained on the spool.Described printer (3) can adopt EPSON-80,81,82 type typewriters.On shell wall, be provided with numeric keypad (5), the starting switch J2 that affixes one's seal, supply socket (7) and computer serial line interface (8).

Referring to Fig. 2, device U1 is described microprocessor, and it can select 89 or 16 serial CPU etc. for use.Select the 89C51 device in this example for use.Device U3 is a hardware clock timing device, and it has the internal memory of several bytes, can store seal information such as the number of times of affixing one's seal, seal code name, and it can be worked under extremely low power consumption under the battery-powered support of internal electrical, finishes the timing of clock and the reservation of seal information.The address date port AD0～AD7 of this device and the P0 mouth of U1 join, the P17 end of sheet choosing end CE and U1 joins, the AIE/ PR end of address latch end AS and U1 joins, the RD end of reading Enable Pin DS and U1 joins, and the WR end of read-write end R/V and U1 joins.Device U4 is described keyboard, and the P2 mouth of it and U1 joins, and the described start-up circuit of affixing one's seal (12) is connected and composed by button J2, resistance R 3 and power supply.Press J2, circuit can provide the high level signal of affixing one's seal and give the P27 end of U1.Described indicator can adopt buzzer (13), also can adopt the led lighting indicator, is attempted by the P16 end of U1.The reset terminal RESET of U1 is connected to the reset circuit that is connected into by capacitor C C1, resistance R 2; Its X1, X2 termination have crystal B2.Functional software among the U1 mainly is made up of coded lock and false-proof digital string software for calculation.False-proof digital string in this example by enciphered digital (3), the number of times of affixing one's seal (4), date (6), time (4) totally 17 bit digital form, its form is referring to Fig. 4.The computing formula of this false proof character is made of two functional expressions, and the one, false-proof digital string function formula: Z=F[T, C, N, V]; The 2nd, enciphered digital functional expression: V=F[T, C, N].T is that seal code name, V are enciphered digitals for the date and time of affixing one's seal, C in the formula, and N is the number of times of affixing one's seal, and Z is false proof character; The concrete mathematical formulae of these two functions can preferably draw according to the general requirement that is difficult for decoding.During calculating, calculate enciphered digital V earlier, calculate false-proof digital string Z again.Their course of work is: after the energising, reset terminal 9 pin of device U1 are changed to high level, and then U1 enters duty.By keyboard input password, after password was correct, buzzer provided two short indications of unblanking earlier; If password bad, buzzer is not named, and at this moment, any operation is invalid.After coded lock was opened, program was down carried out, and U1 sends the reset signal of printer head, head is resetted by the P10～P12 end of printer interface earlier.To the inspection that resets of U3 inside institute deposit data, there is an initialization bit U3 inside to U1 by the P0 mouth then, and this as the value for having set are not then carried out the initialization of U3, otherwise initialization U3.Initialization comprises the setting of time and the setting of printing times starting point.After finishing, U1 monitors the state that starts button J2 and keyboard of affixing one's seal by the P23～P26 end and the P27 end of P2 mouth.At this moment, can carry out three kinds of function operations, they are: affix one's seal, the password of the verification of false-proof digital string and coded lock revises.The described operating process of affixing one's seal is: J2 directly pushes button, U1 is made, send instruction by RD, WR end to U3 earlier, from U3, read real-time date, time, affix one's seal number of times and seal code name, utilize above-mentioned functional expression to calculate false-proof digital string Z then and deposit internal memory in, send the U3 storage after again printing times being added 1 back to, send the print signal of false-proof digital string from P10～P14 end afterwards, then printer is carried out the printing of false-proof digital string.After printing is finished, then send the signal of affixing one's seal, make the action of electromagnetism seal, add a cover trace, thereby finish the whole process of affixing one's seal from the P15 end.The operating process of described false-proof digital string check is: by two function keys (as: 99), then U1 is converted to test status on keyboard.At this moment, order is keyed in the false-proof digital string and the seal code name of the side of affixing one's seal, U1 proposes to affix one's seal date, time, seal code name, the number of times of affixing one's seal from the numeric string of input then, utilize above-mentioned formula to calculate again one time, and relatively with the false-proof digital string of result of calculation and key entry, true, pseudo-with two cry promptings short, a length of buzzer then, thus the checkout procedure of finishing.After this process is finished, return to the init state of U1.This function is all to use under the situation of this kind seal in the contract parties, and both sides' seal can be tested mutually.Simultaneously, also can carry out loopback under the condition of fax and review having.Promptly require the other side that its seal is covered at short notice again on paper, fax is delivered to us, and we reviews immediately, and whether the time that can have a look earlier in the false-proof digital string is reasonable, and then the operation of testing.Because the trace of this seal can not puppet be created at short notice, so false proof effectiveness is very strong.Described coded lock password retouching operation is: key in two function keys (as: 88), then U1 is converted to password and revises state, imports 6 bit digital more in order, and buzzer is short to cry two, and prompt cipher is identified, and returns to the init state of U1 then.

Referring to Fig. 3, described printer interface circuit detects interface circuit and figure punch drive circuit and interface card J3 by the digit wheel rotating drive circuit of printhead, digital turned position and forms.Wherein digit wheel rotating drive circuit is connected and composed by triode N1, N2, resistance R 5 and protection diode D5.Detecting interface circuit is made of the anti-dried anti-resistance R 6, R7, the R8 that are connected between P10～P12 end and the ground.The figure punch drive circuit is connected and composed by triode N4, N3, resistance R 9 and protection diode D6.Described electromagnetism seal drive circuit is by triode N7, N8, and solenoid L1 and some resistance of power switch pipe M1, electromagnetism seal connect and compose.The implementation of printing and affixing one's seal is: at first U1 provides high level signal from the P13 end, and this signal is by digit wheel rotating drive circuit, makes the motor operations of printing head and drives digit wheel and rotate; Afterwards, U1 detects next digital position signal TT, T, R from J3 by P10～P12 end, when detecting the numeral that is in print position and required printing digital consistent, the P14 end provides high level signal, this signal is by printing drive circuit, makes the magnetic valve work on the printer and prints numeral; Finish after the printing of a character, printhead is gone to next position of printing numeral automatically, and duplicate detection signal and print procedure are up to having printed 17 numerals; Afterwards, the high level signal of a P14 end long period of output makes the printer head get back to original position.Then the P15 end is exported high level signal, then electromagnetism seal drive circuit (11) work, and solenoid L1 energising, seal presses down finishes the action of affixing one's seal.Handle in order to carry out data with the outer computer networking, can increase a serial communication interface device U9 in microprocessor unit, 9 pin of this device meet the serial transmitting terminal TXD of U1, and 10 pin connect the serial interface receiving end of U1.The signal that U1 sends is through delivering to outer computer from the output of 7 pin after the level conversion of U9, and the transmission signal of outer computer is sent into by 8 pin of U9, equally through deliver to the receiving terminal RXD of U1 after the level conversion of U9 from 10 pin.

Referring to Fig. 5, the trace that this seal covered as shown in the figure, sequence number (15) is added a cover trace for seal, sequence number (14) is the false-proof digital string.This false-proof digital string can be according to the different upper and lower, left and right that are positioned at trace (15), the set position of printer.

Claims (2)

1, intelligent electronic security stamp is characterized in that:

A, have a shell (1), in shell, be provided with electromagnetism seal (2), miniature digital printer (3) and the controller of affixing one's seal (4);

B, the described controller of affixing one's seal are made up of microprocessor unit, keyboard (5), the start-up circuit of affixing one's seal (12), indicator (13), miniature digital printer interface circuit (10) and electromagnetism seal drive circuit (11), and described keyboard is arranged on the shell wall;

C, described microprocessor unit are mainly used in the check of adding a cover of the unlatching of control coded lock, the printing that forms anti-dummy string, control string and electromagnetism seal and anti-dummy string, and this microprocessor unit is made of a single-chip microcomputer U1, a hardware clock timing device U3 who has a small amount of internal memory at least.

2, intelligent electronic security stamp according to claim 1 is characterized in that: be provided with a serial communication interface device U9 in microprocessor unit.

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