CN2464857Y - Sequence free cade input electronic permulation lock - Google Patents

Abstract

The utility model relates to a sequence free code inputting electronic code lock, belonging to the electronic lock class. The utility model is characterized in that an encoding circuit 1 which is used for encoding is composed of an encoding switch block 6 and an AND gate 7; a code checking circuit which is used for checking codes is composed of counters 8, 9 and a keyboard; thus, the small motion amplitude of code inputting and permanent sequence free and method free can be realized, and a plurality of groups of the codes can be provided. The utility model has the advantages of compact circuit, perfect function, high security, small area of the keyboard, convenient installation, and low cost, and the utility model can be used for occasions needing locks of various safes, safe boxes, burglar-proof doors, etc. The utility model can be suitable for one person or more than one person.

Description

The sequence free cade input electronic password lock

A kind of sequence free cade input electronic password lock, the utility model belongs to the electronic lock class.

At present existing electronic password lock is made up of internal control circuit and external digital keyboard two parts.Password of this coded lock has only a kind of input method, on the other hand, numeric keypad is rearranged by specific order by 0～90 digital keys, other people are easily according to finger movement, judge corresponding position, thereby learn password, therefore this coded lock password is easily found by other people, is absolutely unsafe.In addition, existing electronic password lock generally can only provide one group of password, and is extremely inconvenient when using for many people.

The purpose of this utility model is to provide a kind of password action spoke degree of inputing little and do not have the input mode and many electronic password locks of cipher code set number of permanent order and method.Its simple in structure, strong security, thousands of times of ground of the input method of each password increase, and one group of cipher code set number to secret key amount group can be provided, and continuous error code warning blocking function is arranged.

The coding circuit 1 that is characterised in that of the present utility model is connected after the end parallel connection of each switch of every code switch group with an input of door 7, and the other end of each switch of every code switch group is the Q by diode and counter respectively ₀～Q ₉End connects, be connected with an input of door 11 with two inputs with the output of door 7, to decoding circuit 2, the reset terminal Cr of first digit counter 8 is connected and is connected with positive source by input/reset button switch 10 with another input of door 11 with the CP end and two inputs of the reset terminal Cr of other digit counter 9, counting circuit 4, is connected a press button between the CP of individual count device end and the positive source and imports button as password, the reset terminal R of counting circuit 4 passes through two diodes and two relay J respectively ₁, J ₂An end of constant open contact connect, be connected with an electric capacity 13 between the continuous error code signal output part Q of counting circuit 4 and the power cathode.

Below in conjunction with accompanying drawing the utility model is specified:

Fig. 1: the keyboard floor map of sequence free cade input electronic password lock.

Fig. 2: the control circuit figure of sequence free cade input electronic password lock.

Sequence free cade input electronic password lock keyboard is made up of the press button and the input/reset button switch 10 that are connected between the CP of individual count device end and the positive source, and each button indicates nonnumeric sign.(as English alphabet)

Control circuit is by coding circuit 1, to decoding circuit 2, and unlock circuit 3, counting circuit 4, warning exclusive circuit 5 is formed.Coding circuit 1 is by code switch group 6, forms with door 7, is connected after the end parallel connection of each switch of every code switch group with an input of door 7, and the other end of each switch is the Q by diode and counter respectively ₀～Q ₉End connects, and is connected two inputs and an input of 11 with the output of door 7, and with power cathode between be connected an electric capacity 12; Decoding circuit 2 is made up of counter and keyboard, the reset terminal Cr of individual count device links together with another input of door 11 with the CP of counting circuit 4 end and two inputs and is connected with positive source by input/reset button switch 10, be connected a press button between the CP of individual count device end and the positive source, these press buttones and input/reset button switch 10 has been formed keyboard; A button on code switch group, counter and the keyboard formed the coding of a password with to sign indicating number, increase the number of code switch group, counter and keyboard, just can increase the password figure place; Unlock circuit 3 is made up of code signal amplification delay circuit, electromagnetic lock DCS14; Counting circuit 4 is made up of counter, and its reset terminal R is respectively by two diodes and two relay J ₁, J ₂An end of constant open contact connect, the other end of constant open contact is connected with positive source, is connected with an electric capacity 13 between continuous error code signal output part Q and the power cathode; Warning exclusive circuit 5 is by 555 time base circuits 16, and alert acoustic-electric road 15 is formed.

Further specify as follows in conjunction with control circuit figure:

When the input proper password, two inputs and door 11 output high level, after amplifying time-delay, relay J ₂Adhesive a period of time, electromagnetic lock DCS14 gets electric, and lock is opened, and counting circuit 4 resets; Error code once, counting circuit 4 counting once, when the error code number of times surpassed setting value continuously, the warning exclusive circuit was triggered, J ₁Adhesive, J _1-1Connect, counting circuit 4 resets, and alert acoustic-electric road 15 gets electric, sends chimes of doom, simultaneously J _1-2Disconnect, coding circuit 1, to decoding circuit 2, the power supply of unlock circuit 3 is cut off, and lock can't be opened, and warning exclusive circuit 3 resets after a period of time, and system enters armed state.

When using the sequence free cade input electronic password lock, the user connects respective switch with every code switch group by the number of oneself selecting earlier, setting code, and when unblanking, corresponding button input set point number can be unblanked on keyboard.As use four sequence free cade input electronic password locks, the coding method of password " 2211 " is: the Q of first corresponding counter 8 of code switch group ₂The switch connection of end, (rest switch is an off-state) compiles and edits first password " 2 ", and the rest may be inferred, compiles and edits password by turn.To the sign indicating number foundation be: A, B key are respectively pressed secondary on the keyboard, and C, D key are respectively pressed once.(the CP end of A key and first digit counter 8 is corresponding, and B, C, D key are corresponding with second, the 3rd, the CP end of the 4th digit counter) password input can be selected distinct methods according to personal habits, respectively presses once as A, B, C, D key, respectively presses A, B key again; Or the A key press earlier secondary, and B, C, D key are respectively by once, and again by B key or the like, as long as after satisfying each button input set point number, press the OK key again, (the OK key is corresponding with input/reset button switch 10) locks and promptly be opened.The coding method of multiple cipher is as follows: every code switch group respective switch is all connected, and as under the condition of existing password " 2211 ", increases password " 3211 ", and coding method is: only need the Q with the corresponding counter 8 of first code switch group ₃The switch of end is also connected, and promptly finishes the coding of " 3211 ", and the rest may be inferred, can compile and edit multiple cipher, uses for many people, the same to coding mode.

The utility model is compared with prior art, and not only the cipher code set number is many, and strong security.

Claims (1)

1. sequence free cade input electronic password lock of forming by coding circuit (1), to decoding circuit (2), unlock circuit (3), counting circuit (4), warning exclusive circuit (5), it is characterized in that coding circuit (1), be connected after the one end parallel connection of each switch of every code switch group with an input of door (7), the other end of each switch of every code switch group is the Q by diode and counter respectively ₀～Q ₉End connects, and be connected with an electric capacity (12) between the output of door (7) and the power cathode, be connected with an input of door (11) with two inputs with the output of door (7), to decoding circuit (2), the reset terminal Cr of first digit counter (8) is connected and is connected with positive source by input/reset button switch (10) with another input of door (11) with the reset terminal Cr of other digit counter (9), the CP end and two inputs of counting circuit (4), and the reset terminal R of counting circuit (4) is respectively by two diodes and two relay J ₁, J ₂An end of constant open contact connect, be connected with an electric capacity (13) between the continuous error code signal output part Q of counting circuit (4) and the power cathode, by the press button and input/reset button switch (10) keyboard that form and that indicate nonnumeric sign that are connected between the CP of individual count device end and the positive source.

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