CN1059009C - Electronic puzzle lock - Google Patents

Abstract

The present invention relates to an electronic coded lock which belongs to the technical field of electronic machinery. The existing electronic coded lock has the defect of easy false alarm, so people generate tired mood and numb feeling, and codes of the existing electronic coded lock are easy to decipher. The present invention solves the problems of easy false alarm and easy decryption. The present invention is composed of a code input circuit, a circuit for preventing a plurality of input buttons from being simultaneously pressed down, a circuit for recording the press time number of the input buttons, a circuit for recording the input error time number of the full codes, an alarm circuit, a time delay circuit and an executive circuit. The present invention alarms only when the codes are wrongly input for three time. The codes of the present invention are difficult to decipher. The circuit voltage only uses low voltage of 6V, sot he circuit voltage can be provided by 4 batteries of 1.5V. The present invention has the advantages of no influence by power failure, simple structure, easy production, wide application on various locks, high safety and high reliability.

Description

Electronic password lock

Title of the present invention is an electronic password lock, belongs to the electric mechanical technical field.

Existing electronic cipher is latched in some shortcomings, and circuit design is not very tight, and confidentiality is not strong, and false alarm easily takes place, and might decode with simple method.The disclosed electronic password lock of Chinese patent CN2031026V is to have installed electronic cipher additional on the basis of mechanical lock.Improved confidentiality though do like this than the simple mechanical lock, but still the inconvenience that can't resolve key loss or forget to cause in doors.In addition, as long as its warning circuit is to touch wrong one to read yard key and just will cause warning, thereby easy false alarm, its electronic circuit partly designs to such an extent that be not very tight, as long as which is judged is unlock key, needn't as long as press simultaneously, or can open according to order with the method that the conversion order is pressed continuously.

The objective of the invention is to design the tighter novel electronic coded lock of a kind of electronic circuit, be difficult for decoding, be difficult for false alarm takes place, is a kind of electronic password lock of dependable performance.

The circuit principle of compositionality of electronic password lock as shown in Figure 1, entire circuit is made of 7 parts: 101-password input circuit, 102-prevent that a plurality of load buttons from pressing simultaneously that circuit, 103-record load button is pressed the number of times circuit, 104-writes down full password input error number of times circuit, 105-warning circuit, 106-delay circuit, 107-executive circuit.Each circuit structure is as shown in Figure 2:

101-password input circuit is by d type flip flop J ₁, J ₂, J ₃, J ₄, J ₅, with door J ₉, J ₁₁, J ₁₃, J ₁₅, J ₁₇, button S ₁, S ₂, S ₃, S ₄, S ₅Constitute.

102-prevent a plurality of load buttons press simultaneously circuit by with door J ₁₀, J ₁₂, J ₁₄, J ₁₆And four diode D ₁, D ₂, D ₃, D ₄Constitute.Wherein, J ₁₀Two inputs be connected on 101 button S respectively ₁With S ₂Output, J ₁₂, J ₁₄, J ₁₆And the like.These several outputs with door pass through diode D ₁, D ₂, D ₃, D ₄All be connected on 101 the reset line.Like this, just guaranteed when a plurality of load buttons are pressed simultaneously that making d type flip flops all in 101 all is zero again.

103-record load button is pressed the number of times circuit by decade counter J ₂₀, with the door J ₁₈And press the representative S that any load button all has pulse input ₆Constitute.J ₂₀Output Q ₅Be connected on J ₁₈Input, J ₁₈Another input be connected on the d type flip flop J of afterbody in 101 ₅Q end, J ₁₈Output on 3 o'clock: 1. J ₂₀2. 3. 104 input of 101 reset line of reset terminal.Like this, make circuit have following function: 1. when the input proper password, though J ₂₀Export a high potential, but because 101 J ₅The Q end this moment be electronegative potential, so J ₁₈Output is not 2. when importing full password mistake, J ₁₈Output is arranged, and its output makes 104 to note this time wrong and make J in 101 ₁-J ₅No matter have several being put this moment " 1 ", all disposable resetting, thus avoid the password accumulation and caused the possibility of decoding.(so three mistakes of circuit push full password and just can report to the police, as do not have this circuit, then can cause following phenomenon: if setting code is 35241, mistake is input as 46325 for the first time, then J ₁, J ₂Upset, mistake is input as 12534 for the second time, then J ₃, J ₄Upset is input as 42531, then J for the third time ₅Upset, like this, because the effect of accumulation, password has been decrypted.Other technology is not because of there being this circuit, so can decode with the method yet).3. make J ₂₀Reset, carry out the preparation of record once more.104-writes down full password input error number of times circuit by J ₆, J ₇2 d type flip flops reach and a door J ₁₉Constitute.Its J ₆J ₇Form a counting circuit, J ₆J ₇Output and J ₁₉Input link to each other J ₁₉Output be connected on J in 105 ₈Input.Its effect is when three mistakes of record are pressed full password, J ₁₉Export a high potential, this high potential makes the d type flip flop J in 105 ₈Upset.

105-warning circuit d type flip flop J ₈, triode N ₂And alarm M formation, wherein J ₈Input be connected on J in 104 ₁₉Output.

J ₈Q terminate at N ₂Base stage, Q terminates at the J in 106 ₂₁Input, and be connected J in 101 ₉An input on.J ₈Input be connected on J in 104 ₁₉Output on.J ₈Effect be J in 104 ₁₉During the output high potential, its upset when it overturns, utilizes its Q end high potential to make N ₂Conducting alarm M reports to the police.1. the electronegative potential of Q end with it makes the integrated circuit frequency divider J in 106 ₂₁2. the oscillator starting oscillation that connects makes the J in 101 ₉Can not export high potential again, thereby make in time of fire alarming, can not input any password again, thereby further increase the difficulty of decoding.

The 106-delay circuit is by integrated circuit frequency divider J ₂₁With resistance R ₂, R ₃Capacitor C ₂Constitute.Use R ₂, R ₃, C ₂The oscillating circuit and the J that form ₂₁Link to each other J ₂₁Output and 105 in J ₈Reset terminal link to each other, with 104 in J ₆J ₇Reset terminal links to each other.J in 105 ₈When the Q end becomes electronegative potential, R ₂, R ₃, C ₃The oscillating circuit starting oscillation of forming oscillates to the stipulated time, J ₂₁Just export a high potential, 1. this high potential makes the J in 105 ₈Resetting reports to the police stops.Because J ₈The Q that resets end recovers high potential, makes 101 J ₉Can export high potential again, input password once again and become possibility thereby make.J ₈Q end recover high potential and also make J in 106 ₂₁Reset, the blocking of oscillator is while J 2. ₂₁This high potential of output also makes the J in 104 ₆, J ₇The numeration circuit reset of forming.

The 107-executive circuit is by triode N ₁, electromagnet T constitutes.Its effect is the J in 101 ₅When the Q end becomes high potential, N ₁Conducting, electromagnet T action.

During the input password, press 101 S successively ₁, S ₂, S ₃, S ₄, S ₅Representative is the password load button of 1-5 in proper order, will make J ₅Upset, thus make three pipe N ₁Conducting makes the electromagnet armature action, lock is opened, at this moment diode L ₁Luminous.

AND circuit J ₁₁, J ₁₃, J ₁₅, J ₁₇Assurance have only with last password input after, Next Password could be imported, and makes the d type flip flop output state change of representing this password.

When the load button more than 2 or 2 is pressed simultaneously, the J in 102 ₁₀, J ₁₂, J ₁₄, J ₁₆4 AND circuits can make the whole equal return-to-zero of d type flip flop of compiling and editing the password input circuit, thus the possibility that the method that can avoid usefulness simply to press simultaneously breaks a code.

J in the numeration circuit (103) ₂₀Be integrated circuit decimal system count splitter, J ₂₀With each pressing button the representative S of signal input is arranged all ₆Form a record and push the numeration circuit of load button number of times.This circuit has 2 effects 1. when 5 passwords of input are all correct, though J at this moment ₂₀Q ₅End output high potential, but because J ₅Upset this moment, J ₅Q end output electronegative potential, so with a J ₁₈Still export electronegative potential, 2. other circuit all is failure to actuate when the password of input is wrong, J ₂₀Q ₅End is still exported high potential,, because the mistake of password makes J ₅Can not overturn, at this moment J ₅Q end still export high potential, like this at J ₁₈Output just exported a high potential, this high potential is input into J on the one hand ₂₀Make J ₂₀It is ready to be reset to once more record, gives J on the one hand ₁-J ₅A reset signal makes J ₁-J ₅Though existing several upsets this moment, all disposable return-to-zero.Like this, the decoding that has caused with regard to having prevented the password accumulation may.(for preventing false alarm, this circuit design is that three mistakes are pushed full password and just can be reported to the police, if do not have this circuit then following phenomenon can occur: for example setting code is 35241, and the full password of wrong for the first time input is 46325, then J ₁J ₂Upset, the full password of wrong input is 12534 for the second time, then J ₃J ₄Upset, the full password of wrong input is 42531 for the third time, then J ₅Upset, like this, because the effect of accumulation, password has been decrypted).In addition, J ₁₈The high potential of output also uses d type flip flop J ₆J ₇The numeration circuit of forming has write down the mistake of all-key input this time, when above-mentioned this wrong triplicate, then with door J ₁₉Two inputs be high potential all just, thereby make J ₁₉Output become high potential.This high potential makes d type flip flop J ₈Upset, J ₈After the upset, high potential of Q end output makes triode N ₂Conducting makes alarm M report to the police.J ₈Upset Q end output electronegative potential, this electronegative potential makes and door J on the one hand ₉An input become electronegative potential, like this, though this moment push load button again, with door J ₉Can not export high potential, thereby make at J ₈Do not overturn in time of returning, circuit can not be inputed password again.On the other hand, by J ₈Q end become electronegative potential, also make integrated circuit frequency divider J ₂₁Connect, by R ₂, R ₃, C ₂The R that forms _CThe oscillator starting oscillation is until the time of setting, J ₂₁Export a high potential, this high potential makes J on the one hand ₆J ₇The numeration circuit return-to-zero of forming makes J on the other hand ₈Return-to-zero, like this, J ₈Q end recover electronegative potential, N ₂End, warning stops.J ₈Q end recover high potential, make J on the one hand ₂₁Return-to-zero, R _CThe blocking of oscillator.On the other hand, make J ₉Second input recover high potential, make that inputing password once more becomes possibility.Like this, just can accomplish that 1. three mistakes push all-key (being designed to 5 sign indicating numbers in this circuit) and just can report to the police and 2. can not be input into password 3. after the end of reporting to the police when reporting to the police, whole circuit restPoses.

This circuit power adopts 4 joint 1.5V dry cells, therefore, and the little electric current of designing requirement low-voltage (6V) of electromagnet.Like this, the suction of electromagnet is not too large, thereby must design a reliable dynamo-electric coupling method, and Fig. 3 (c) has provided this design.Wherein, 12 is electromagnet, when electromagnet does not have electric current to pass through, moves handle (29), and then armature (34) is pulled to groove in the handlebar by spring (33), thereby has limited the traverse of handle, the position that handle can not be moved to allow lock open.When if electromagnet has electric current to pass through, armature is held, can not be by spring (33) pulling, and handle then can successfully be pulled to the position that lock can be opened.She Ji advantage is like this: when the electromagnet no power, armature and iron core do not have any gap substantially, therefore, when energising, the suction that electromagnet produces is as long as can hold armature, like this, adopt the coil of the little relay of 6V, also can reach instructions for use.

Fig. 3 (D) is a mechanical part schematic diagram with the safety cabinet lock of electronic password lock circuit control.Wherein 30 is handles, handle and connecting rod 31 are fixed together, be installed in the back of handle (29) upper grooves by the electromagnet (12) of electronic password lock electronic circuit control, handle is at an end (upper end) of connecting rod (31), handle rotates, then latch (32) can be withdrawed from from doorframe, draw-out handle (29) then is the necessary condition of swing handle (30).Like this, as long as electromagnet has electric current to flow through, but with regard to the opening safety cabinet.

The present invention has guaranteed to have only on circuit design and has imported when all-key is still mistake for the third time, just can report to the police.Therefore, avoided false alarm effectively.This circuit is when reporting to the police, and any sign indicating number all not fail entered, and could go input behind the time of fire alarming of stipulating again.Decoding hardly may.

This circuit can extensively be used on the various locksets.Also can be used on the car alarm,, and the normal opened contact disconnection of the circuit on the automobile with little relay got final product as long as make electromagnet into 6V little relay.

Structure of the present invention and uncomplicated is easily manufactured, cost is low, easy, safe, effective, be not afraid of power failure, can push huge numbers of families to, and market prospects are wide.

Accompanying drawing and explanation thereof

Fig. 1: electronic password lock principle schematic

Fig. 2: electronic password lock electronic-circuit diagram

Fig. 3 (C): the electronic password lock electromagnet connects design diagram with mechanical part

Fig. 3 (D): electronic password lock is applied to the schematic diagram that safety cabinet is locked

Fig. 4: electronic password lock sample schematic diagram

Fig. 5: electronic password lock load button wiring diagram

Fig. 6: electronic password lock input socket wiring diagram

101: the password input circuit

102: prevent that a plurality of input knobs from pressing circuit simultaneously

103: the record load button is pressed the number of times circuit

104: write down full password input error number of times circuit

105: warning circuit

106: delay circuit

107: executive circuit

0-9: load button 14: bundle conductor

10: control box 15: socket

11: travel switch 16: plug

12: electromagnet T 17: the travel switch prap

13: input cartridge 18: the electromagnet prap

19: display L ₁Prap 27: external power supply prap (+)

20: display L2 prap 28: external power supply prap (-)

21: instant return-to-zero prap 29: handle

22: power-line terminal (+) 30: handle

23: power-line terminal (-) 31: connecting rod

24: instant return-to-zero button 32: latch

25: display L ₁33: spring

26: display L ₂34: armature

Embodiment

Fig. 4 is an electronics sign indicating number lock sample schematic diagram.It has two boxes, and one is the input cartridge (13) that is contained in outdoors, and another is the control box (10) that is contained in the door, and electronic control circuit mainly is installed in the control box, and two boxes are coupled together by lead (14).

Input cartridge has on (13) " 0-9 " button of 10 input codes, each button all has two constant open contacts (Fig. 5 A, B), that is to say and whenever pushes button No. one time, and two input signals are all arranged, and this one of them be independently, is used for the input of password.Another same point with other 9 buttons is in parallel, as the usefulness of record load button compression number, all gives pulse of B point among Fig. 2 (this pass ties up to and uses S among Fig. 2 as long as promptly push any one load button ₆Expression).In addition, also have instant return-to-zero button (24), display on the input cartridge " 1 " (25), display " 2 " (26), external power supply prap 27,28, to prevent the emergent usefulness of control box inside (10) battery failure.Each button among Fig. 5 two lines that come out, the anode of A point order sound channel headset plug wherein, the negative terminal of B point order sound channel headset plug, the bundle conductor (14) of drawing from input cartridge 13 pass on the control box (10) that is connected in the aperture access door on the door in the door.Prap 17 is arranged on the control box, connect travel switch 11, prap 18 connects electromagnet 12, prap 19 connects display " 1 " (25), prap 20 connects display " 2 " (26), it is positive source that prap 21 connects instant return-to-zero 24,22, and 23 is power cathode, in addition, also have two groups of totally 18 mono headset seats on the control box.First group is 10 sockets, its I, I ¹For order is 1 password input socket.II II ¹Be that order is 2 password input socket, and the like.If password is 23578, then 2 plugs insert the I socket, and 3 plugs insert the II socket, and 5 plugs insert III and insert .....Why establish I ¹, II ¹, III ¹, VI ¹, V ¹Socket is because this coded lock allows every the position same code, and as 23253 or 24242 etc., when this kind coding occurring, available two ends all are the wire jumpers of mono headset plug, same code is coupled together, thereby but increased the quantity of encryption.Other one group of 8 socket on the control box (Fig. 4 15) are not incorporated into the socket of the headset plug of password, the mode of connection of socket such as Fig. 6 for other.

The bottom of control box 10 is batteries of 4 joint 1.5V, as the power supply of entire circuit.

Claims (9)

1. One kind by password input circuit [101], prevent that a plurality of load buttons from pressing the electronic password lock that circuit [102], record load button are pressed number of times circuit [103], record full password input error number of times circuit [104], warning circuit [105], delay circuit [106] and executive circuit [107] formation simultaneously, it is characterized in that when 5 passwords importing from password input circuit [101] are all correct (J ₁)-(J ₅) 5 d type flip flops all overturn, executive circuit [107] starting, electromagnet [T] action is opened lock, and when the password of being imported by password input circuit [101] is wrong, (J ₁)-(J ₅) these 5 d type flip flops can not all overturn, executive circuit [107] is inoperative, and record load button compression number circuit cooperates with password input circuit [101] and has that output is feasible notes mistake this time by writing down full password input error number of times circuit [104], password input circuit [101] circuit recovers simultaneously, if three full password mistake inputs are arranged, warning circuit [105] starting is reported to the police, during reporting to the police, because the effect of delay circuit [106], make and to input any password again, the record load button is pressed the existence of number of times circuit [103], make it avoid password accumulation simply and cause possibility of decoding, prevent that a plurality of buttons from pressing circuit simultaneously and having prevented to press break a code possible simultaneously with a plurality of buttons.
2. 2. according to the said electronic password lock of claim 1, it is characterized in that said password input circuit [101] is by d type flip flop (J ₁), (J ₂), (J ₃), (J ₄), (J ₅), with door (J ₉), (J ₁₁), (J ₁₃), (J ₁₅), (J ₁₇), button (S ₁), (S ₂), (S ₃), (S ₄), (S ₅) constitute its first password load button (S ₁) output be connected on one two input with door (J ₉) one of them input on, and this with the door (a J ₉) another input be connected on d type flip flop (J in the warning circuit [105] ₈) the Q end on, the d type flip flop (J of its afterbody ₅) Q terminate at the record load button and press in the number of times circuit [103] and door (J ₁₈) an input on.
3. 3. according to the said electronic password lock of claim 1, it is characterized in that said prevent a plurality of load buttons press simultaneously circuit [102] by with door (J ₁₀), (J ₁₂), (J ₁₄), (J ₁₆) and four diode (D ₁), (D ₂), (D ₃), (D ₄) constitute, it is characterized in that and door (J ₁₀) two inputs be connected on the button (S of password input circuit [101] respectively ₁) and (S ₂) output with the door (a J ₁₂), (J ₁₄), (J ₁₆) and the like, these several outputs with door pass through diode (D ₁), (D ₂), (D ₃), (D ₄) all be connected on the reset line of password input circuit [101].
4. 4. according to the said electronic password lock of claim 1, it is characterized in that said record load button presses number of times circuit [103] by decade counter (J ₂₀), with the door (a J ₁₈), button (S ₆) constitute decade counter (J ₂₀) output Q ₅Be connected on and door (J ₁₈) input, with door (J ₁₈) another input be connected on the d type flip flop (J of afterbody in the password input circuit [101] ₆) Q end, with door (J ₁₈) output be connected on 1. decade counter (J ₂₀) reset terminal 2. 3. write down on the reset line of password input circuit [101] on 3 of the inputs on full password input error number of times road [104].
5. 5. according to the said electronic password lock of claim 1, it is characterized in that the full password input error of said record number of times circuit [104] is by (J ₆), (J ₇) 2 d type flip flops and with a door (J ₁₉) constitute, its input is connected on the record load button and presses in the number of times circuit [103] and door (J ₁₈) output, d type flip flop (J ₆), (J ₇) form a counting circuit and with door (J ₁₉) output be connected on the input of warning circuit [105].
6. 6. according to the said electronic password lock of claim 1, it is characterized in that said warning circuit [105] is by d type flip flop (J ₈), triode N ₂And alarm M formation, it is characterized in that not only using d type flip flop (J ₈) Q end control report to the police and make delay circuit start and 2. be connected on (J in the password input circuit [101] with the input that 1. its Q end is connected on delay circuit ₉) a wherein input, make and in time of fire alarming, can not input any password again.
7. 7. according to the said electronic password lock of claim 1, it is characterized in that said delay circuit [106] is by integrated circuit frequency divider (J ₂₁), (R ₂), (R ₃), electric capacity (C ₂) constitute, by resistance (R ₂), (R ₃), electric capacity (C ₂) oscillating circuit and the frequency divider (J that form ₂₁) link to each other frequency divider (J ₂₁) output and the d type flip flop (J in the warning circuit [105] ₈) reset terminal link to each other, with the d type flip flop (J in the full password input error number of times circuit of record [104] ₆), (J ₇) reset terminal link to each other the d type flip flop (J in warning circuit [105] ₈) when Q holds the step-down current potential, resistance (R ₂), (R ₃), electric capacity (C ₃) the oscillating circuit starting oscillation formed, oscillate to the stipulated time, frequency divider (J ₂₁) just export a high potential, 1. this high potential makes the d type flip flop (J in the warning circuit [105] ₈) resetting stops to report to the police, because d type flip flop (J ₈) the Q end of resetting recovers high potential, make password input circuit [101] with door (J ₉) can export high potential again, input password once again and become possibility, d type flip flop (J thereby make ₈) Q end recover high potential and also make frequency divider (J in the delay circuit [106] ₂₁) reset the blocking of oscillator, 2. frequency divider (J ₂₁) this high potential of output also makes the d type flip flop (J in the full password input error number of times circuit of record [104] ₆), (J ₇) the numeration circuit reset formed.
8. 8. according to the said electronic password lock of claim 1, it is characterized in that the button that its load button adopts two groups of normal opened contacts, wherein one group is used for the password input, and another group is together in parallel as the usefulness of record button input number of times.
9. 9. according to the said electronic password lock of claim 1, it is characterized in that the power supply of said entire circuit can be supplied with by the battery of 4 joint 1.5V, other power supply about also available 6V is supplied with.

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