CN2376519Y

CN2376519Y - Electronic permulation lock

Info

Publication number: CN2376519Y
Application number: CN 99231916
Authority: CN
Inventors: 刘万明
Original assignee: KUNMING ELECTRIC MOTOR CO Ltd
Current assignee: KUNMING ELECTRIC MOTOR CO Ltd
Priority date: 1999-06-18
Filing date: 1999-06-18
Publication date: 2000-05-03
Anticipated expiration: 2009-06-18

Abstract

The utility model relates to an electronic code lock, which comprises a lock tongue, and an electronic circuit. The utility model is characterized in that the interior of a key is composed of two pieces of serial electronic erasable EEPROM; the key and a lock circuit are combined into an integral body through inserting into a socket JS by a JW plug; the interior of the lock is mainly composed of a serial digital display circuit, and amplifying circuits Q1, Q2 which are connected with coils L1, L2 which are formed by single-chip machine U1, a latch U2, an electronic erasable memory U3, two integrated blocks 741SL164, and two seven segment LED displays. Because the utility model uses the circuit combination of the key and the lock, the lock is opened by the lock circuit through identifying identifier words and codes. The utility model has the advantages of high theftproof performance, convenient operation, and strong reliability.

Description

A kind of electronic password lock

The utility model relates to locking device, specifically a kind of electronic password lock.

It originally opens different locks with different keys existing lock, and the key of a big string is usually made troubles to us.Though a large amount of various types of electronic password locks are arranged at present, can not realize that all a key drives many locks, and can revise key cipher.

The purpose of this utility model provides a kind of by the design of the special circuit in the lock ﹠ key, can realize key operated many locks, theftproof performance good electron coded lock.

The utility model is to realize like this.Key and lock adopt the size that patches of unified standard to open the necessary condition of many locks to satisfy a key between the two, and key inserts the back key and is in the same place with the combination of circuits in the lock.Concrete scheme is that electronic password lock comprises dead bolt, locking bolt, electronic circuit, it is characterized in that forming by two serial electrically rewritable EPROM in the key, by combining with lock circuit among the JW plug insertion JS, in the lock mainly by single-chip microcomputer U1, latch U2 and electricity are rewritten memory U3, the digital display circuit of serial that two integrated package 741SL164 and two 7 sections light-emitting diode displays constitute and with coil L1, the amplifying circuit Q1 that L2 connects, Q2 forms, the P0 mouth of U1 is as the address/data multiplex bus, process U2 latchs and tells address and data-signal, high-order address signal in conjunction with the P2 mouth, the U3EPROM memory is read to decide operation, 14 of U1,15 pin are controlled digital the demonstration, the P15 pin of U1 is exported conventional unlocking signal and is amplified rear drive L1 electromagnet coil dial-out locking bolt through Q1, the P14 pin output second insurance start signal of U2 is amplified rear drive L2 electromagnet through Q2 and is transferred to second lock, 10 of U1,11 pin are set to serial communication interface, are drawn so that lock is provided with and checks with dedicated microcomputer by socket J1.

Coded lock of the present utility model is owing to adopt the combination of circuits of key and lock, lock circuit is opened lock by the identifier word and the password of identification key, and changes next unlocking cipher automatically, has so both made others duplicate your key, after you opened once lock, the key that duplicates had also just lost efficacy.On the contrary, if the duplicator had driven once lock before you, your key is not just driven this lock yet, at this moment can again your key be set up an identifier word and password again in lock by the identifier word of this key in the main spoon cancellation lock, and problem has also just solved.Owing to be provided with class master spoon and visitor's spoon, use is more flexible again.Can protect the key of oneself meticulously, remove to open many locks of oneself.It is good, easy to use to the utlity model has theftproof performance, advantages such as good reliability.

Fig. 1 is a lock circuit schematic diagram of the present utility model

Fig. 2 is key circuit theory diagrams of the present utility model

Fig. 3 is dead bolt and electromagnetic valve structure schematic diagram

Below in conjunction with accompanying drawing the utility model is described in further detail, but is not limited to shown in the accompanying drawing.

As shown in Figure 1, be circuit in the lock of the present utility model, U1 is 8051 single-chip microcomputers, includes 2Keprom memory execution of program instructions.With the P0 mouth of U1 as the address/data multiplex bus, latch through U2 and to tell address and data-signal, in conjunction with the high-order address signal of P2 mouth, the U3EEPROM memory is carried out read/write operation.Latch U2 and electricity are rewritten memory U3 model and are respectively 74LS373 and 28266.Two integrated package 74LS164 and two 7 sections light-emitting diode displays are formed the digital display circuit of typical serial, control digital the demonstration by 14,15 pin of U1.The P15 pin of U1 is exported conventional unlocking signal and is amplified rear drive L1 electromagnet coil dial-out locking bolt through transistor Q1, the P14 pin output second insurance start signal of U2, amplify rear drive L2 electromagnet through transistor Q2 and transfer to second lock, 10,11 pin of U1 are set to serial communication interface, are drawn so that lock is provided with and checks with dedicated microcomputer by J1.Wherein D1 is a light emitting diode, and C1, C2, C3 are electric capacity, and X1 is a crystal oscillator, and KR, K2, K3 are switch, and R1 is a resistance.

As shown in Figure 2, key is made up of two serial electrically rewritable EEPROM, inserts in the JS socket by the JW plug to combine with lock circuit.The P10 of processor U1 and P11 send control logic through JS-4, JS-3, JW-4, JW-3 is to the SCL of integrated package U4, the SDA pin reads store among the U4 daily and does not rewrite information (as identifier word of this key etc.), if will rewrite information among the U4, must pass through dedicated microcomputer, and use the KW switch to carry out, the control logic that the P12 of processor U1 and P11 send is through JS-2, JS-3, JW-2, JW-3 is to integrated package U5-SCL, the SDA pin, in order to read identifier word and the password that produces at particular lock among the U5, the identifier word and the password of the specific keys of this group identifier word and password and U3 storage compare, conform to then by the P15 of U1, P14 sends corresponding unlocking signal, and opens the unlocking cipher of specific keys among password and the U3 when being produced one group of random cipher greater than 20 and be used for rewriting the U5 particular lock by the U1 computing.Wherein, the U4 model is 24LC16, and the U5 model is 24LC16, and RW, KW are resistance and switch.

Among Fig. 3,1 is dead bolt, and 2 is spring, the 3-locking bolt.

A lock has a main spoon, and being used for being provided with or cancelling other key is class master key or objective key, and two locking bolt electromagnet of L1, L2 among main spoon and the class master spoon adhesive simultaneously figure are promptly opened Lock with double safety guard, and visitor's spoon then can only be opened the single locking bolt electromagnet of L1.If lock has been locked into dual fail-safe, after visitor's spoon inserts, the unlocking authority of visitor's spoon will be cancelled automatically.

Unlocking authority is provided with, and at first inserts main spoon and presses the KR key again, and number shows " SL " (visitor's spoon is set) afterwards, is shown as " SH " (class master spoon is set) by adjusting by the K2 key.Number begins flicker after pressing K3, this moment is as long as take out main spoon, insertion key to be provided with, system just will have identifier word to deposit in the lock automatically in the key, and increases by one group of unlocking cipher in key, and number will show that 2 sixteen-bit system numerals are from 01-FF after finishing, promptly lock can allow 255 key operated, but must remember this two number,, cancel record in the corresponding digital phase-locking so that after key is lost.

The cancellation of unlocking authority, insert main spoon after, press K2 bond number sign indicating number and show the last key record number that is provided with, press K3 up to the number that occurs cancelling, can cancel the record of the key of this number correspondence by the K2 key, this key just can not be opened this again and lock.

Illegal key detection record, in the key that does not have authority inserts lock, lock will write down the sequence number of this key automatically, and flicker shows that illegal key inserts number of times after owner unblanks, and carry out statistical disposition or composition lock net etc. if just record in the lock can be moved into microcomputer by J1 and special purpose interface access microcomputer.

Claims

1, a kind of electronic password lock, comprise dead bolt, electronic circuit, it is characterized in that forming by two serial electrically rewritable EEPROM in the key, by combining with lock circuit among the JW plug insertion socket JS, in the lock mainly by single-chip microcomputer U1, latch U2 and electricity are rewritten memory U3, the digital display circuit of serial that two integrated package 741SL164 and two 7 sections light-emitting diode displays constitute and with coil L1, the amplifying circuit Q1 that L2 connects, Q2 forms, the P0 mouth of U1 is as the address/data multiplex bus, process U2 latchs and tells address and data-signal, high-order address signal in conjunction with the P2 mouth, the U3EEPROM memory is read to decide operation, 14 of U1,15 pin are controlled digital the demonstration, the P15 pin of U1 is exported conventional unlocking signal and is amplified rear drive L1 electromagnet coil dial-out locking bolt through Q1, the P14 pin output second insurance start signal of U2 is amplified rear drive L2 electromagnet through Q2 and is transferred to second lock, 10 of U1,11 pin are set to serial communication interface, are drawn so that lock is provided with and checks with dedicated microcomputer by socket J1.

2, by the described coded lock of claim 1, it is characterized in that single-chip microcomputer U1 is 8051, latch U2 is 74LS373, and it is 28266 that electricity is rewritten memory U3.