CN2075238U

CN2075238U - Digit-control puzzle lock

Info

Publication number: CN2075238U
Application number: CN 90200621
Authority: CN
Inventors: 黄伟杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-01-13
Filing date: 1990-01-13
Publication date: 1991-04-17

Abstract

The utility model relates to a digit-control puzzle lock, comprising a keyboard, a code device, a pulse converter, a program counter, a memory, a single-way switch, a programmable controller, a comparison controller, a switch delayer, an electronic switch, a micro motor, a warning delayer, an alarm and an electrical source. The utility model adopts the techniques of digital encoding and memory; cipher is memoried; when an input cipher is the same as the cipher, the lock is opened; when the input cipher is not the same as the cipher, the alarm alarms; cipher is changed conveniently. The digit-control cipher lock adopts a CMOS digital integrated circuit and a new solid electronic device, the utility model has the advantages of compact structure, low power consumption and strong anti-interference capability; the digit-control cipher lock can be widely used for door locks, strongboxes and file cabinets.

Description

Digit-control puzzle lock

The invention belongs to electronic technology field, is a kind of totally digitilized integrated circuit coded lock.

Existing electronic password lock, major part are to adopt the mechanical type code switch, and complex structure, mechanical contact is many, volume is big, reliability is not high, and cataloged procedure complexity, need the contact internal circuit, the more current electronic password lock that utilization controlled by single chip microprocessor are also arranged, but its price is generally higher.

Purpose of the present invention just provide a kind of simple in structure, volume is little, reliable operation, numerical control cipher lock that price is low.

Fig. 1 is the electric functional-block diagram of this numerical control coded lock.

This numerical control coded lock comprises: keyboard (1), encoder (2), pulse converter (3), program counter (4), memory (5), single-way switch (6), programmable controller (7), comparison controller (8), switch delayer (9), electronic switch (10), micro machine (11), warning delayer (12), alarm (13), power supply (14) etc.Keyboard (1) output is connected with encoder (2), keyboard (1) is gone up the ten's digit of keying in send into encoder (2), encode by encoder (2), become binary-coded decimal output then, pulse converter (3), program counter (4), memory (5) connects successively, binary-coded decimal one tunnel by encoder (2) output is sent into pulse converter (3), password of the every input of keyboard, lock-out pulse converter (3) just produces the lock-out pulse of a pulse as whole numerical control cipher lock, send into program counter (4), by program counter (4) number of input password is counted, the output of program counter (4) connects memory (5), address code is provided for memory (5), make and deposit corresponding data in corresponding address, when the password number of input is 6, send the high level that a control is unblanked or reported to the police by program counter (4), another road of data of the output of encoder (2) is connected to the B group input of comparison controller (8), provide data to comparison controller (8), the output of encoder (2) also is connected to single-way switch (6) when being connected to the B group input of comparison controller (8), the output of single-way switch (6) is connected to the data terminal of memory (5), is connected to the A group input of comparison controller (8) simultaneously.The output one tunnel of programmable controller (7) is connected to the control end of memory (5), another road is connected to the control end of single-way switch (6), when being in programming state, the single-way switch closure, so just enter memory (5) storage by single-way switch (6) from the code data of keyboard input, also deliver to the A group input of comparison controller (8) simultaneously as data, A group data and B group data compare in comparison controller (8), when data are identical, comparison controller (8) output low level, data are not simultaneously, comparison controller (8) output high level, the output one tunnel of comparison controller (8) is connected to the input of switch delayer (9), its output is connected to electronic switch (10), control the opening time of electronic switch (10) by switch delayer (9), electronic switch (10) but output be connected on the micro machine (11) of control lock tongue motion, another road of output of comparison controller (8) is connected to the input of warning delayer (12), the output of warning delayer (12) is connected on the alarm (13), the time of fire alarming of control alarm (13).When the data (A group) of storing when the data (B group) of keyboard (1) input and memory (5) are identical, comparison controller (8) is output as low level, one tunnel unlatching through switch delayer (9) time-delay, control electronic switch (10), by electronic switch (10) control micro machine (11) action, drive the action of tapered end tongue, with door-lock opening; Another road is added to warning delayer (12), and control alarm (13) is not worked it.When the data of the data of keyboard (1) input and memory (5) storage not simultaneously, comparison controller (8) is output as high level, is added to warning delayer (12), makes its deferred action, control alarm (13) work, warning; Gauge tap delayer (9), electronic switch (10), micro machine (11) make it not work simultaneously, and door lock is not opened.D.C. regulated power supply provides DC voltage for entire circuit, and when AC power had a power failure suddenly, this power supply also was equipped with standby dc source, is circuit supply immediately.

This numerical control coded lock adopts cmos digital integrated circuit and novel solid electronic device, and it is outer without any mechanical contact that circuit is removed 12 keyboard contacts, and cataloged procedure is very simple, as long as can finish the process of change password easily by 12 key boards.In addition, this numerical control coded lock has perfect warning system owing to adopt cmos digital integrated circuit and solid-state electronic element, so circuit structure compactness, low in energy consumption, heating less, reliable operation, antijamming capability is strong, the life-span is long, cost is low.Adopt digital coding and memory technology, can remember the unlocking cipher of 16 figure place, so safety factor is very high (reaching 1,000,000).This numerical control coded lock can be widely used in other places such as family's door lock, safety cabinet, file cabinet.

Fig. 2 is a kind of enforcement circuit diagram of this numerical control coded lock.

Among the figure, keyboard (1) is by 12 conductive rubber key switch K ₁-K ₁₂Form, wherein K ₁-K ₁₀Be ten key, K ₁₁Be reset key, K ₁₂The programming key.Encoder (2) is made up of diode hard iron battle array, and its effect is that the decimal number that will import is transformed into the binary number binary-coded decimal.Lock-out pulse converter (3) by or non-IC ₂Form, its effect is that password of every input promptly produces a lock-out pulse and delivers to IC in the program counter (4) ₁CP end, deliver to NAND gate IC in the programmable controller (7) simultaneously ₈The D input.Program counter (4) is by decimal system counting/distributor IC ₄Deng composition, its effect is that the lock-out pulse of lock-out pulse converter (3) output is counted, also promptly the password number of input is counted, corresponding address code is provided for simultaneously memory (5), and when the password number of input is 6, exports the high level that control is unblanked or reported to the police.Memory (5) is by IC ₀Form, use integrated circuit 2114 here, it is the static random memory that a kind of microcomputer is used, and is used for storage and output password data in this device, its address end A ₀-A ₅IC in the linker counter (4) ₁Y ₁-Y ₆Output, remaining address wire ground connection or connect high level, its data terminal D ₀-D ₃Connect the A group input of comparison controller (8) and the output of single-way switch (6), its read-write control end R/ W connects NAND gate IC ₈Output, its operating principle is, as NAND gate IC ₈Output when being high level, memory (5) is by D ₀-D ₃The code data that end output has been deposited; As NAND gate IC ₈Output when being low level, by D ₀-D ₃The code data that end is sent here by single-way switch (6) to memory (5) input, the address of inputoutput data is by IC in the cyclelog ₄Y ₁-Y ₆Provide.The effect of single-way switch (6) is, when system is in programming state, single-way switch (6) is connected, so just enter memory (5) storage by single-way switch (6) from the code data of keyboard (1) input, when normal unlocking condition, single-way switch (6) disconnects, and makes the data (A group) of memory (5) output isolated with the data (B group) of encoder (2) output, and then they are compared in comparison controller (8).Programmable controller (7) is by d type flip flop IC ₆, resistance R ₄, R ₅, R ₆, R ₇, capacitor C ₃, C ₄, triode BG ₁, program switch K ₁₂, NAND gate IC ₈Form IC ₆D end connect d type flip flop IC in the switch delayer (9) ₃The Q output, capacitor C ₄, resistance R ₄Series connection, the mid point of its connection meets IC ₆R end, capacitor C ₄Another termination power V _DD, resistance R ₄Other end ground connection; IC ₆CP end connect resistance R ₆, connect triode BG simultaneously ₁Colelctor electrode, resistance R ₆Other end ground connection, triode BG ₁Emitter stage through program switch K ₁₂Meet power supply V _DD, IC ₆Q end connect the control end of single-way switch (6), be connected to NAND gate IC simultaneously ₈The C input, triode BG ₁Base stage pass through resistance R ₇Be connected to IC ₆Q end and NAND gate IC ₆The C input; Capacitor C ₃, resistance R ₅Series connection, its mid point is connected to IC ₆S end, resistance R ₅Other end ground connection, capacitor C ₃The other end be connected to IC in the switch delayer (9) ₃The Q output; Resistance R ₉With light emitting diode D ₃Series connection, D ₃Negative pole termination IC ₆The Q output, R ₉Another termination power V _DDIts operating principle is: IC when initial ₆Q end be low level, triode BG ₁Open, when the password of exporting from the password of keyboard input and memory (5) whole when identical, IC ₃The Q output be low level, IC ₃Q end be high level, this high level makes IC after a period of time ₃S end level uprise IC by low ₃State turnover, the Q end is high level, Q is a low level, when the Q end is low level, IC ₆D end be low level, click key K this moment ₁₂, IC ₆State Q end be low level, programming indication light emitting diode D ₃Light; Q is a high level, makes single-way switch (6) connect NAND gate IC ₈Open, this moment, circuit just entered programming state.Concrete programming process is to press reset switch K earlier ₁₁, order is keyed in 6 unlocking ciphers of determining arbitrarily then, the 6th password input back IC ₃Q end become high level by low level, pass through capacitor C ₁Be coupled to IC ₆S end, make IC ₆Reset, the Q end becomes high level, and the Q end is for low level, with NAND gate IC ₈Sealing, circuit withdraws from programming state automatically; Capacitor C ₄Effect be to make circuit in the moment of connecting power work, make circuit enter programming state, IC ₆Q end be low level, the Q end is high level.The output of the A group input termination memory (5) of comparison controller (8), the output of B group input termination encoder (2), its operating principle is that the B group data of encoder (2) output and the A group data of memory (5) output are compared in comparison controller (8), the output (F) of comparison controller (8) was output as low level when the A group was identical with B group data, the A group is organized data not simultaneously with B, the F end is high level, promptly as long as the password of input is when having one to make mistakes, comparison controller (8) is with regard to self-locking, the F end remains high level, no longer the signal variation with input changes, up to reset switch K ₁₁Closing to the reset terminal of comparison controller (8)---the R end adds a positive pulse, and comparison controller (8) just withdraws from self-locking.Switch delayer (9) is by d type flip flop IC ₃And some peripheral cells compositions, its output connects electronic switch (10), and its effect is the opening time of control electronic switch (10).Electronic switch (10) is by integrated power switch I C ₇, resistance R ₈Form, its output connects micro machine (11), and its effect is the start-stop time of control micro machine (11).Micro machine (11) drives the tongue motion of tapered end.Warning delayer (12) is by d type flip flop IC ₄, resistance R ₃, capacitor C ₂, diode D ₂Form diode D ₂Negative pole connect IC ₄Q end, resistance R ₃With diode D ₂Parallel connection, and then and capacitor C ₂Series connection, the mid point of its series connection is connected to IC ₄R end, capacitor C ₂Minus earth, IC ₄S end ground connection, IC ₄D end connect the output of comparison controller (8), IC ₄CP end linker counting according to IC in (4) ₁Y ₆Output, its operating principle is: when the unlocking cipher of input is correct, d type flip flop IC ₄D end be low level, the Q end is output as low level, warning delayer (12) is not worked, the alarm (13) that is connected with warning delayer (12) is not also worked, when the unlocking cipher of importing is incorrect, IC ₄D end be high level, at this moment as CP end when adding a positive pulse, the d type flip flop upset, Q holds and becomes high level, alarm (13) sends warning, this high level passes through resistance R simultaneously ₃To capacitor C ₂Charging, make the reset terminal of d type flip flop---the voltage of R end progressively rises, and works as capacitor C ₂On voltage when reaching the upset level of d type flip flop, the d type flip flop upset, the Q end becomes low level, alarm (13) quits work, and suitably selects resistance R ₃And capacitor C ₂Numerical value can control the length of time of fire alarming.Alarm (13) is by IC ₅Warning special IC and alarming horn are formed.

Claims

1, a kind of by keyboard (1), encoder (2), pulse converter (3), cyclelog (4), switch delayer (9), electronic switch (10), micro machine (11), alarm (13), the numerical control cipher lock that power supply (14) etc. constitute, it is characterized in that a memory (5) in addition, single-way switch (6), programmable controller (7), comparison controller (8), warning delayer (12), keyboard (1) output is connected with encoder (2), pulse converter (3), program counter (4), memory (5) connects successively, the output of encoder (2) divides three the tunnel, one the road is connected to the input of pulse converter (3), one the road is connected to the B group input of comparison controller (8), one the road is connected to the input of single-way switch (6), the output of single-way switch (6) is connected to the data terminal of memory (5), be connected to the A group input of relatively making device (8) simultaneously, the output one tunnel of programmable controller (7) is connected to the control end of memory (5), another road is connected to the control end of single-way switch (6), the output one tunnel of comparison controller (8) is connected to the input of warning delayer (12), another road is connected to the input of switch extender (9), alarm (13) is connected with the output of warning delayer (12), electronic switch (10) is connected with the output of switch delayer (9), electronic switch (10) but output be connected on the micro machine (11) of control lock tongue motion.

2, numerical control cipher lock according to claim 1 is characterized in that described memory (5) IC ₀, its address end A ₀-A ₅IC in the linker controller (4) ₁Y ₁-Y ₆Output, remaining address wire ground connection or connect high level, its data terminal D ₀-D ₃Connect the A group input of comparison controller (8) and the output of single-way switch (6), its read-write control end R/ W connects NAND gate IC ₈Output.

3, numerical control cipher lock according to claim 1 is characterized in that described programmable controller (7) is by d type flip flop IC ₆, resistance R ₄, R ₅, R ₆, R ₇, capacitor C ₃, C ₄, triode BG ₁, program switch K ₁₂, NAND gate IC ₈Form IC ₆D end connect IC in the switch delayer (9) ₃The Q output, capacitor C ₄, resistance R ₄Series connection, the mid point of its connection meets IC ₆R end, capacitor C ₄Another termination power V _DD, electricity group R ₄Other end ground connection, IC ₈CP end connect resistance R ₈, connect triode BG simultaneously ₁Colelctor electrode, resistance R ₆Other end ground connection, triode BG ₁Emitter stage through program switch K ₁₂Meet power supply V _DD, IC ₆Q end connect the control end of single-way switch (6), be connected to NAND gate IC simultaneously ₈The C input, triode BG ₁Base stage pass through resistance R ₇Be connected to IC ₆Q end and NAND gate IC ₈The C input, capacitor C ₃, resistance R ₅Series connection, its mid point is connected to IC ₆S end, resistance R ₅Other end ground connection, capacitor C ₃The other end be connected to IC in the switch delayer (9) ₃The Q output, resistance R ₉With light emitting diode D ₃Series connection, D ₃Negative pole termination IC ₆The Q output, R ₉Another termination power V _DD

4, numerical control cipher lock according to claim 1 is characterized in that described warning delayer (12) is by d type flip flop IC ₄, resistance R ₃, capacitor C ₂, diode D ₂Form diode D ₂Negative pole connect IC ₄Q end, resistance R ₃With diode D ₂Parallel connection, and then and capacitor C ₂Series connection, the mid point of its series connection is connected to IC ₄R end, capacitor C ₂Minus earth, IC ₄S end ground connection, IC ₄D end connect the output of comparison controller (8), IC ₄CP end linker counter (4) in IC ₁Y ₆Output.