CN204256813U

CN204256813U - Handset call door lock

Info

Publication number: CN204256813U
Application number: CN201420460864.7U
Authority: CN
Inventors: 黄光瑜
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-12
Filing date: 2014-08-12
Publication date: 2015-04-08
Anticipated expiration: 2024-08-12

Abstract

Handset call door lock relates to a kind of electric lockset field.The utility model comprises handpiece portion and electronic cipher latching segment (see Figure of abstract), electronic cipher latching segment is the password acceptance and identification circuit that are made up of acoustic pickup (B), note amplifier (C), dual-audio dtmf signal demoder (D), electronic cipher lock circuit (E), this circuit is connected with Electric lock (G), control is locked and is unblanked, function button input (F) is connected with electronic cipher lock circuit (E), in order to the setting of function or password.Handpiece portion (A) sends the password be made up of dual-audio dtmf signal, is transferred to acoustic pickup and receives, after amplifying, decoding, draw password with sound wave form every sky, then controls locking and unblanking of Electric lock by the comparison success of password is no.Unlocked by mobile telephone is contactless, and realizes remote unlocking by the calling between mobile phone.

Description

Handset call door lock

Technical field

The utility model relates to a kind of electric lockset field, especially uses mobile phone remote coded lock aspect.

Background technology

Have a kind of situation, hold the people of key a long way off, and the people that will enter does not have key, if you will allow him enter, you must call a taxi or run as he opens the door, if now can with the method for remote unlocking be ideal only.Current electronic lock all no this item functions, and also there are two large defects: one is will join electron key, not only carries inconvenience, also fragile, easily loses; Two is input the characteristic collecting device of unblanking to expose, and subjects to other people and destroys (as: button, fingerprint, recognition of face etc.).

Summary of the invention

In order to solve the problem, the utility model adopts handset call form to unblank, namely: if I will ask to enter other people room, I can use his phone of mobile phone dialing, tell him I will unblank in the request of entering, he transfers to one group of unlocking cipher by telephone connection in distant, and my mobile phone receives rear lock and just can open.If my door, only mobile phone near door lock, need transfer to one group of password with mobile phone key, lock just can leave, and now mobile phone is exactly key, removes that unblank will with the trouble of key from.

The utility model solves the technical scheme that its technical matters adopts: the password acceptance be made up of acoustic pickup (B), note amplifier (C), dual-audio dtmf signal demoder (D), electronic cipher lock circuit (E) and identification circuit, this circuit is connected with Electric lock (G), control is locked and is unblanked, function button input (F) is connected with electronic cipher lock circuit (E), in order to the setting of function or password.Use mobile phone to send one group of password combined by dual-audio dtmf signal when unblanking, after acoustic pickup reception, draw password, then carry out password comparison through amplifying, decoding, comparison success just sends instruction and starts Electric lock unlatching.Dtmf signal is can as the sound signal simulating signal transmitted the same as sound wave, ripple can be passed aloft, also can be transmitted by telephone network long distance, transmit unlocking cipher with it, mobile phone remote calling can be realized easily and unblank and the object of this locality mobile phone when key unlocking.

Principle of work (see accompanying drawing 1):

Fig. 1 is the principle of work block scheme of handset call door lock.In figure, A is mobile phone, and B is acoustic pickup, and C is note amplifier, and D is dual-audio dtmf signal demoder, and E is electronic cipher lock circuit, and F is function button input, and G is Electric lock.We utilize mobile phone can transmit and play this characteristic of dtmf signal, by A near B, one group that sends as A be made up of dtmf signal password time, dtmf signal passes ripple to the B in lock by sound wave every sky, the dtmf signal that B picks up is sent into D and is carried out decoding and draw digital signal after C amplifies, and the single-chip microcomputer of digital signal in E processes, the unlocking cipher that mobile phone can transmit by single-chip microcomputer be pre-stored in interior password and compare, just send an instruction after comparison success, drive G to open.When shutting, as long as door is shut conveniently, lock core can trigger the program of locking a door and automatically run on door lock.Password arranges stored in single-chip microcomputer in advance, can be modified as the case may be, to guarantee the safety of password by F.

Dual-audio dtmf decoder adopts HT9170 integrated chip (see Fig. 2), and it is as follows that DTMF data export table:

Low pass (HZ)

High pass (HZ)

Numeral

OE

D3

D2

D1

D0

697

1209

1

H

L

H

697

1336

2

H

L

H

L

697

1477

3

H

L

H

770

1209

4

H

L

H

L

770

1336

5

H

L

H

L

H

770

1477

6

H

L

H

L

852

1209

7

H

L

H

852

1336

8

H

L

852

1477

9

H

L

H

941

1336

0

H

L

H

L

941

1209

*

H

L

H

941

1477

#

H

L

697

1633

A

H

L

H

770

1633

B

H

L

852

1633

C

H

941

1633

D

H

L

-

ANY

L

Z

What HT9170 integrated chip inputted is dtmf signal, dtmf signal is the sound signal by low pass and high pass two kinds of combination of frequencies, every a line in table represents a numeral, dtmf signal exports the tetrad " D3; D2; D1, D0 " that a single-chip microcomputer can identify after the process of HT9170 integrated chip.In table, numeral " 1-# " correspond to " 1-# " key mapping of dial pad for mobile phones, and password is formed by these 12 digital combination in any." A-D " numeral is originally novel wouldn't be used.

In mobile phone, dtmf signal has three kinds of broadcast modes: one is the keypad tone with sending during push-button dialing; Two is record to play, and is exactly as music, is first recorded in mobile phone by dtmf signal password, then plays back; Three is mobile phone or phones that other one end connected by mobile phone, utilizes the mobile phone of far-end to play or telephone key-press dialing.Dtmf signal play by mobile phone is exactly that the broadcast mode of first and second kind is applied to this locality and unblanks, and the third is for remote unlocking to electronic password lock input password.Record password for preventing other people to be encrypted password.

The beneficial effects of the utility model are: overcome the problem that conditional electronic lock will carry with key, or outside being exposed to other input modes (as: keyboard, IC-card, fingerprint, face etc.) equipment, easily by the problem of artificial destruction.The utility model mode of unblanking not only simplifies the structure of electronic lock, also substantially increases security, makes cost cheaper, and it is more convenient to use.

Accompanying drawing explanation

Fig. 1 is the utility model functional-block diagram.

Fig. 2 is the utility model circuit theory diagrams.Be further described below in conjunction with circuit theory diagrams:

In figure, form dtmf signal reception, amplifier circuit unit by electret acoustic pickup MIC, operational amplifier LM386 and the electronic devices and components such as electric capacity C1-C5, resistance R1-R3.Dtmf signal is received by MIC, amplifies the dtmf signal demoder sending into next stage again through LM386.J1 is external little loud-speaker socket, can be used for monitoring after connecting little loud-speaker.

Dtmf signal decoding circuit unit, is made up of electronic devices and components such as integrated chip HT9170B and electric capacity C6-C9, resistance R4-R6, crystal oscillator B1.Dtmf signal inputs from C6, exports tetrad data after decoding from D3, D2, D1, D0 pin.

DV, D3, D2, D1, D0, OE pin can be connected with the single-chip processor i/o mouth in any electronic lock, and program will rewrite.DV is that DV is high level when there being effective dtmf signal to input, otherwise is low level, can be used for single-chip microcomputer and determines whether the input of effective dtmf signal, just prepare to receive data if had, otherwise not so; OE is data output enable end, allows digital signal to export, do not export during low level when OE is high level.

Embodiment

The utility model can select the electronic lock body adapted with gate, the circuit of Fig. 2 and the electrical combination of electronic password lock is made in a printed circuit board is installed on, rewrites according to new demand program.Pick-up head is towards door outside installed across door-plate direction, and beats several acoustic apertures, by sound hole hole, makes sound effectively can pass to pick-up head.Button is towards door inside installed, and button is used as presetting cipher and door drawback lock is used, and is provided with signal lamp, to show the duty of coded lock where necessary.Lock panel does not establish any device of unblanking, and only arranges a handle door handle.

Password can pre-set, such as: 123456.

Three kinds of situations are had when unblanking:

1, under normal circumstances, unblanked by the people grasping password.As long as by mobile phone near pickup hole, dial as dialing the number, password " 123456 " is dialled and can have been unblanked continuously.If use the unpronounceable mobile phone of dialing, password can be recorded into a section audio, by audio player plays.

2, the situation of remote unlocking.If A is the people that will enter, B is the people grasping password.By the phone of A with mobile phone dialing B, after connecting phone, two people converse, and A can illustrate cause, when B agrees to unblank, tell that A is by the pickup hole of mobile phone near door, and after A carries out this action, B starts to dial password " 123456 ", has dialled rear lock and has namely opened.

3, the people in door unblanks, as long as press unlock key.

When shutting, only has a kind of situation.Shut the door conveniently by the people closed the door, the operation of single-chip microcomputer internal processes will be triggered as long as shut the door, by door automatic locking.

In order to the safety of password, not utilize by other people, can use tumbling-type password, allow password often open and once just change one regularly, as long as the people grasping password knows that its Changing Pattern just can remember password, other people cannot know.Password encryption measure has a variety of, can according to safe class flexible Application cryptographic algorithm, and it is very difficult for wanting to crack encrypted password, and therefore security can ensure.

Claims

1. a handset call door lock, it is characterized in that: the password acceptance be made up of acoustic pickup (B), note amplifier (C), dual-audio dtmf signal demoder (D), electronic cipher lock circuit (E) and identification circuit, this circuit is connected with Electric lock (G), control is locked and is unblanked, function button input (F) is connected with electronic cipher lock circuit (E), in order to the setting of function or password.

2. handset call door lock according to claim 1, is characterized in that: unlocking cipher is combined by dual-audio dtmf signal, and use mobile phone to send, acoustic pickup receives.