CN2148801Y - Double-key type ten billion electronic cipher lock - Google Patents

Abstract

The utility model relates to a double-key type ten billion electronic cipher lock, particularly a device which uses electronic technology to control a cipher lock. The utility model is composed of a cipher input keyboard (1), an encoder (2), an integrated circuit controller (3), a relay (4) which belongs to an actuator (15), a tongue sheet (5), a clamping groove (6), a guiding rod (7), a lock hole (8), a supporting seat (9), etc. Only two keys can complete the input of ciphers, the capacity of the ciphers is 10< 10 >, the ciphers can be replaced optionally, and the utility model can give a high pitch alarm when the keys are pressed by a mistake and can give a low pitch alarm when the voltage of a power supply battery is lowered. The utility model has the characteristics of low cost, small size, light weight, strong crypticity, high confidentiality, low consumption, energy saving, etc.

Description

Double-key type ten billion electronic cipher lock

The design of a kind of pair of key formula 10,000,000,000 electronic password lock utilizes electronic technology to reach safety cabinet, national treasury, confidential departments to be carried out coded lock control, be a kind of automatic safety device.

The daily electronic password lock of seeing mostly is multikey formula keyboard structure, and nearly ten to 12 keys that have are though button is directly perceived, input is convenient, but security performance is relatively poor, allow easily other people by examining user's button use or button on polishing scratch infer password, divulge a secret thereby cause.In addition, keyboard volume is bigger, and inconvenience is installed, and provides bigger destruction inlet to the burglar.

Described in the utility model pair of key formula 10,000,000,000 electronic password locks design at the problems referred to above, and it only uses two buttons, just can reach the purpose of input password unlocking.These two buttons can be installed in a more hidden place, and institute takes up space very little.Two buttons use simultaneously when unblanking, and when the mistake button occurring, send the high pitch audible alarm immediately, and sealing input some minutes.When suspection has divulge a secret possible, can arbitrarily change new password, the password capacity is up to 10 ¹⁰, promptly have the password of 10,000,000,000 tens words to change for selecting arbitrarily.When supplying cell voltage reduces, can send the bass prompting and report to the police, so that more renew battery.

Described in the utility model pair of key formula 10,000,000,000 electronic password lock are made up of cipher inputting keyboard (1), encoder (2), integrated circuit controller (3) and the relay (4), tongue piece (5), draw-in groove (6), guide rod (7), lockhole (8) and the bearing (9) that belong to executing agency (15).Integrated circuit controller (3) is according to the cipher instruction of input keyboard (1) input, drive relay (4) adhesive or discharge tongue piece (5) and drive guide rod (7) along draw-in groove (6) slip that is fixed on the bearing (9), make guide rod (7) turnover lockhole (8), the opening and closing coded lock.

Described in the utility model pair key formula 10,000,000,000 electronic password lock costs are low, volume is little, in light weight, disguised strong, secrecy is high, its not power consumption at ordinary times just consumes small electric energy when having only button, thereby has prolonged the application life of battery greatly.

The contrast accompanying drawing is further described the utility model below:

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the circuit block diagram of the utility model embodiment;

Fig. 3 is the circuit working schematic diagram of the utility model embodiment.

Two key formula 10,000,000,000 electronic password locks of the utility model are made up of password input keyboard (1), encoder (2), integrated circuit controller (3) and the relay (4), tongue piece (5), draw-in groove (6), guide rod (7), lockhole (8) and the bearing (9) that belong to executing agency (15). Integrated circuit controller (3) drives relay (4) adhesive or discharges tongue piece (5) and drives guide rod (7) along draw-in groove (6) slip that is fixed on the bearing (9), makes guide rod (7) turnover lockhole (8); Tongue piece (5) is installed on relay (4) top that is fixed on the bearing (9) and is connected with guide rod (7); Password input keyboard (1), encoder (2), integrated circuit controller (3) and executing agency (15) connect and compose whole lock body by lead.

The circuit block diagram of two key formula 10,000,000,000 electronic password locks of the utility model is made up of following part: encoder (2), code decoder (10), bit decoder (11), switch gate (12), logic comparator (13), error code high pitch alarm (14), executing agency (15), low-voltage bass prompting alarm (16).

According to the circuit working schematic diagram embodiment of the present utility model is analyzed below:

At first, set out the password of tens word by stirring the switch on the encoder (2).When unblanking, press yard key A and code signal of position key B input, through code decoder (10) and bit decoder (11) decoding, deliver in the logic comparator (13) by switch door (12), compare with the code signal of setting by encoder (2), if the input correctly then do not report to the police, can continue to input the next bit password, until each password all correctly the input finish; The tongue piece (5) that belongs to executing agency (15) is driven guide rod (7) by relay (4) adhesive and slides along draw-in groove (6), makes guide rod (7) leave lockhole (8), reaches the purpose of unblanking.

Sign indicating number key A is by SA ₂Form.When pressing yard key A, SA _2-2Closure, the electric current of dry cell GB passes through R ₁8 to C ₁₂Charging, thereby complete machine obtains normal working voltage.Because of complete machine power consumption is small, C ₁₂Be again a big electric capacity, when constantly pressing yard key A, can be constantly to C ₁₂Charging, thereby can guarantee that complete machine has normal operating voltage always, stops key SA after unblanking _2-2Disconnect, dry cell is no longer discharge then, so the application life of dry cell is very long.

When pressing yard key A, SA _2-1Then beat to movable contact, by IC _3-3, IC _3-4The sign indicating number key input shaper IC circuit that NAND gate is formed _3-3Output then becomes low level by high level, and is input to by decade counter IC ₁The CT input of the code decoder of forming (10) makes IC ₁Begin counting, its Q ₀Output becomes low level by high level, Q ₁Output then becomes high level by low level.Constantly press yard SA of key A according to this password numerical value ₂Switch is up to pressing yard SA of key A ₂The number of times of switch stops when identical with this password numerical value, then IC ₁Corresponding Q output output high level.This high potential signal is input to simultaneously by SA ₃-SA ₁₂On the corresponding positions of the encoder (2) that switch is formed, when a certain switch is chosen on this password numerical value, by IC ₄, IC ₅, IC ₆The input of the switch door in the switch door of forming (12) also is a high level.At this moment, according to by SA ₁The position key B that forms does not lift SA ₁Then beat to movable contact, make by IC _3-1, IC _3-2The IC of the position key input shaper circuit that NAND gate is formed _3-2Output becomes low level by high level, IC _3-1Output become high level by low level, and be divided into two-way output: the one tunnel delivers to by decade counter IC ₂The CT input of the bit decoder of forming (11) makes the CT end become high level by low level.Because of IC ₂End needs trailing edge to trigger, Gu and IC ₂Do not count.Another road is then delivered to by IC _7-1, IC _7-2, IC _8-3B, c, e input in the logic comparator (13) that NAND gate is formed.At this moment, IC ₂Corresponding Q output has been high level, and switch door correspondingly is opened, and when switch door input was high level, its output was a high level also, and sent into the d input in the logic comparator (13).Therefore c, the d the time, e end is high level, IC _7-2Output still be high level, then by IC _7-3, IC _7-4Be not triggered sign indicating number, bit decoder IC Deng the monostable time-delay lockout circuit of forming ₁, IC ₂Be not cleared, by IC _9-1, IC _9-2, IC _9-3The error code high pitch alarm (14) that NAND gate is formed is not triggered yet.Because of IC at this moment ₂Q ₉End still is a low level also, so IC _6-2, IC _6-3The switch door still is closed, IC _8-3The a input be low level still, it is output as high level, by IC _10-1, IC _10-2, IC _10-3The monostable time-delay unlock circuit that NAND gate circuit is formed also is not triggered.

When lifting a key B, SA ₁Beat to stationary contact IC again _3-2Output become high level by low level, capacitor C is passed through in this rising edge pulse ₁, resistance R ₅Deliver to code decoder (10) IC ₁R end, make IC ₁Reset.Simultaneously, IC _3-1Output become low level by high level, this decline is dashed along the pulse and is delivered to bit decoder (11) IC ₂CT end, make it and advance one, corresponding Q output becomes high level by low level, and switch door is correspondingly opened.Then constantly press yard SA of key A again ₂Switch, the IC of code decoder (10) ₁Constantly count, until pressing SA ₂Number of times stop when identical with this password numerical value.And then press the SA of key B ₁Switch makes the IC of bit decoder (11) ₂Advance one again.So alternately press yard SA of key A ₂The SA of switch and position key B ₁Switch, when pressing nine on a key to the, the IC of bit decoder (11) ₂Middle Q ₉Be output as high level, IC _6-2, IC _6-3The switch door is opened simultaneously.Then press yard SA of key A again ₂Switch is inputed the tenth password numerical value, then the IC of code decoder (10) ₁Corresponding Q output is the SA of high level through encoder (2) ₁₂Switch makes IC _6-2, IC _6-3The input of these two switch doors is high level, and its output also is high level, and a, the b end of logic comparator (13) also is a high level.At this moment again according to the SA of position key B ₁Switch does not lift, IC _3-1The high level of output is delivered to b, c, e end.This moment IC _8-3A, b end be high level, it is output as low level, triggers by IC _10-1, IC _10-2, IC _10-3The monostable time-delay unlock circuit of forming is delayed time some seconds, by V ₁Drive relay (4) adhesive tongue piece (5), drive guide rod (7) and slide along draw-in groove (6), make guide rod (7) leave lockhole (8), coded lock just is opened.Simultaneously, by IC _10-2The low level of output makes IC again _10-4NAND gate output high level, and through VD ₂, VD ₁Make the IC of code decoder ₁, IC ₂Reset simultaneously.So far, the password unlocking process finishes.

When the mistake button occurring, owing to press yard SA of key A ₂The number of times and the password numerical value of a certain position unequal, the IC of code decoder (10) ₁Corresponding Q end is not a high level, and then input, the output of corresponding switch door still are low level, and the d end of logic comparator (13) also still is a low level, is pressing the SA of key B ₁During switch, because of b, c, e end are high level, thereby IC _7-2Output low level triggers by IC _7-3, IC _7-4The monostable time-delay lockout circuit time-delay some minutes of forming, its output triggers IC simultaneously _9-1, IC _9-2, IC _9-3, V ₂Mistake key high pitch alarm (14) work of forming, and make IC _10-4The output high level makes sign indicating number, bit decoder IC ₁, IC ₂Reset immediately.Behind some minutes, error code high pitch alarm (14) quits work, can be again button again, the input password.

Encoder (2) is by ten one poles, ten bit switch SA ₃-SA ₁₂Form SA ₃Can set the password value of first 0-9 arbitrarily.By that analogy, SA ₁₂Can set the password value of the tenth 0-9 arbitrarily.By IC _8-1, IC _8-2, R ₉, R ₁₀Form low-voltage bass alarm (16) in circuit, when cell voltage is not enough, send the bass prompting and report to the police, so that in time change battery.

Claims (3)

1, a kind of pair of key formula 10,000,000,000 electronic password locks, form by cipher inputting keyboard (1), encoder (2), integrated circuit controller (3) and the relay (4), tongue piece (5), draw-in groove (6), guide rod (7), lockhole (8) and the bearing (9) that belong to executing agency (15), of the present utility model being characterised in that: integrated circuit controller (3) drives relay (4) adhesive or discharges tongue piece (5) and drives guide rod (7) along draw-in groove (6) slip that is fixed on the bearing (9), makes guide rod (7) turnover lockhole (8); Tongue piece (5) is installed on relay (4) top that is fixed on the bearing (9) and is connected with guide rod (7); Cipher inputting keyboard (1), encoder (2), integrated circuit controller (3) and executing agency (15) connect and compose whole lock body by lead.

2, according to described a kind of pair of key formula 10,000,000,000 electronic password locks of claim 1., it is characterized in that: cipher inputting keyboard (1) is a bipolar two-position switch button A and the two key formula keyboards that one pole two-position switch button B constitutes, encoder (2) is made up of ten one pole ten bit switches, and integrated circuit controller (3) is made up of code decoder (10), bit decoder (11), switch door (12), logic comparator (13), error code high pitch alarm (14), low-voltage bass prompting alarm (16).

3, a kind of pair of key formula 10,000,000,000 electronic password locks according to claim 2, it is characterized in that: code decoder (10), bit decoder (11) are made up of two decade counters, logic comparator (13) is made up of NAND gate circuit, and error code high pitch alarm (14), low-voltage bass disclose alarm (16) and be made up of the multivibrator that NAND gate constitutes.

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