CN202882589U

CN202882589U - Multifunctional electronic coded lock

Info

Publication number: CN202882589U
Application number: CN 201220522724
Authority: CN
Inventors: 曾敬
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-13
Filing date: 2012-10-13
Publication date: 2013-04-17
Anticipated expiration: 2022-10-13

Abstract

The utility model provides a multifunctional electronic coded lock which comprises a keyboard control module, a master control module, a voice alarm module, an unlocking control module and a display module. The multifunctional electronic coded lock is characterized in that the master control module is respectively connected with the keyboard control module, the voice alarm module, the unlocking control module and the display module. After a user enters a password through the keyboard control module, the master control module judges whether the password is correct or not. When the password is correct, the master control module sends an unlocking signal to the unlocking control module to unlock an electronic lock. When the password is incorrect, the voice alarm module prompts an error for the user. When times of the errors of entering the password of the user is three times, the master control module locks a keyboard, the voice alarm module gives a voice alarm for 1 minute, the user can not again enter the password within the 1 minute, the keyboard automatically unlocks after 1 minute and the voice alarm module stops giving the alarm.

Description

Multifunctional electronic coded lock

Technical field

The utility model relates to a kind of coded lock, especially a kind of multifunctional electronic coded lock.

Background technology

In daily live and work, people are more and more higher for the security requirement of house door lock, diversified coded lock occurred thus.Yet existing coded lock safety is low, complex structure.

Summary of the invention

In order to solve the above problems, the utility model provides a kind of multifunctional electronic coded lock, take single-chip microcomputer as core, provides voice antitheft warning function and keyboard auto-lock function.

The utility model provides a kind of multifunctional electronic coded lock, comprise Keyboard Control module, main control module, audio alert module, the control module of unblanking, display module, it is characterized in that: main control module is connected with Keyboard Control module, audio alert module, the control module of unblanking, display module respectively.After the user inputted password by the Keyboard Control module, main control module was judged the password correctness, if password is correct, then sent unlocking signal to the control module of unblanking, and opened electronic lock.Otherwise audio alert module prompting user mistake, the user reaches three times in input password errors number, main control module just locks the keypad, the audio alert module was sent audio alert one minute, the user can not input password again within this minute, keyboard automatic unlocking after one minute, audio alert module stop alarm.

The beneficial effects of the utility model are, realize that voice antitheft reports to the police and the keyboard self-locking, thereby make coded lock have very high security, reliability, use increasingly extensively, have higher practical value.

Description of drawings

Fig. 1 is theory diagram of the present utility model.

The specific embodiment

In Fig. 1, a kind of multifunctional electronic coded lock, comprise Keyboard Control module 1, main control module 2, audio alert module 3, the control module of unblanking 4, display module 5, it is characterized in that: main control module 2 is connected with Keyboard Control module 1, audio alert module 3, the control module of unblanking 4, display module 5 respectively.After the user inputted password by Keyboard Control module 1, main control module 2 was judged the password correctness, if password is correct, then sent unlocking signal to the control module 4 of unblanking, and opened electronic lock.Otherwise audio alert module 3 prompting user mistakes, the user reaches three times in input password errors number, main control module 2 just locks the keypad, audio alert module 3 was sent audio alert one minute, the user can not input password again within this minute, keyboard automatic unlocking after one minute, audio alert module 3 stop alarms.

Keyboard Control module 1 is mainly used in user's input and Modify password.Keyboard Designing 16 buttons, wherein 0 ~ 9 numerical key is used for input and the modification of password; Two of function keys, one is acknowledgement key, is used for confirming after Password Input finishes, one is to revise key, is used for Modify password; Remaining 4 key is for disturbing key board to adopt the housing in row design, and 16 buttons are lined up the 4*4 matrix.8 I/O lines of use main control module 2 ports 2 are done the keyboard scan of 16 buttons in the design, send sweep signal by P2. 0 ~ P2. 3, and P2. 4 ~ P2. 7 reads the button data return code.What main control module 2 adopted is the AT89C51 single-chip microcomputer, it is a kind of low-voltage with 4K byte flicker programmable and erasable read-only storage, the high-performance CMOS 8-bit microprocessor, at chip internal a high-gain inverting amplifier is arranged, its input is chip pin XTAL1, and its output is pin XTAL2.And at chip internal, cross-over connection crystal oscillator and trimmer between XTAL1 and the XTAL2, thus consist of a stable self-excited oscillator, the clock circuit of Here it is single-chip microcomputer.Audio alert module 3 adopts the ISD1420 voice recording and playback ic, and the mode that prerecords is adopted in recording, recording beginning when button K presses, RECLED pin port is set to low level, and this moment, LED was lit, prompting recording beginning, when End of Tape, LED extinguishes.Recording substance is directly inputted from MIC1, amplifier through MIC and MICREF pin input chip internal amplifies, output signal after the amplification is from simulation output ANAOUT output, be capacitively coupled to analog input end ANAIN through 0.1uf again and amplify again, promote the loudspeaker pronunciation through amplifying audio signal from SP+ output.ISD1420 speech chip A2～A7 meets the P0.0～P0.5 of single-chip microcomputer P0 mouth, and PLAYL connects single-chip microcomputer P0.6 mouth, Low level effective, control playing time.Once you begin playback stops behind the time-delay 60s, waits for again playback when next time/PLAYL is " 0 ".The control module of unblanking 4 is mainly finished by transistor and relay, the transistor saturation conduction, and the relay adhesive drives electronic fractional motor running, and electronic lock is opened; Otherwise, when the password of input error, 5 mouthfuls of output low levels of the P3. of single chip computer AT 89C51, the transistor cut-off, relay can not adhesive, and motor does not operate.The numerical data that display module 5 is sent by the single-chip microcomputer output port can directly be presented on the display, and P0 sends data bit by the AT89C51 port, the high level action; Send scan code by AT89C51 port P2. 0-P2. 3, the low level action, whenever only has a low level output, namely only light one-bit digital shows at every turn, lighting next numeral after postponing a bit of time shows again, because the effect of the persistence of vision feels that 4 bit digital are lit simultaneously.Display shows character " GOOD " when password is correct, and when the password mistake, display shows character " EEEE0 ".

Claims

1. multifunctional electronic coded lock, comprise Keyboard Control module (1), main control module (2), audio alert module (3), the control module of unblanking (4), display module (4), it is characterized in that: main control module (2) is connected with Keyboard Control module (1), audio alert module (3), the control module of unblanking (4), display module (5) respectively.