CN2174534Y

CN2174534Y - Infrared electrooptical cipher alarming anti-theft lock

Info

Publication number: CN2174534Y
Application number: CN 92220433
Authority: CN
Inventors: 刘怡
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-30
Filing date: 1992-09-30
Publication date: 1994-08-17
Anticipated expiration: 2002-09-30

Abstract

The utility model discloses a cipher lock with a warning function. A door can be opened by a key after an infrared light cipher is irradiated into a cipher disk in the door through a small hole on the door by infrared light. The cipher lock is mainly composed of an infrared light key, an infrared cipher disk, an encoder module, a door lock and a warning module. The utility model has the technical characteristics of strong confidentiality, low rate of the mutual opening (which is lower than 1/3000000), high reliability, vibration and corrosion prevention as the modules are protected by epoxy resin, man-made sabotage prevention, low power consumption (for example, three NO. 1 batteries can be used for a year), low cost, etc. In addition, the cipher can be changed freely by a user, and a lock tongue is controlled by an electromagnet.

Description

Infrared electrooptical cipher alarming anti-theft lock

The utility model relates to a kind of coded lock, and particularly a kind of have only by behind the infrared light input proper password, could open the coded lock that has warning function simultaneously concurrently with key.It can be widely used in drawer, safety cabinet, door and other need adorn the place of lock.

Traditional coded lock key problem is a reliability, energy consumption and cost.And coded lock one class in the market is that combination disk is exposed outdoors, and this class code-disc can destroy like a dream artificially, so we think that the weakness of exposure formula code-disc is that reliability is low, is unfavorable as door lock at least just.Another kind of coded lock is formed cipher key by permanent magnets, propose to form cipher key as Chinese patent certificate number 61650 " two insurance electromagnetic lock of opening " numbering 9022289.0 with permanent magnets, but the deficiency of this patent is invalid to iron gate (steel casement door), and the townsfolk uses the antitheft person of steel casement door not within minority now, particularly development does not generally use timber.Show according to test that in addition this pin is for timber also only ability generation effect in thickness gate is 15mm, during Men Genghou, magnetic field can not the interior tongue tube generation effect of opposite house.As with the stronger magnetic key of magnetic, then magnetic field can influence each other and easily produce error code, is failure to actuate.Another weakness of this patent is that the number of password of tongue tube combination is limited, and each reed pipe can only have two states, and we are called 0 or 1 and form 2 by four tongue tubes ⁴I.e. 16 kinds of passwords, promptly the key mutual opening rate is ten sixths, does not reach forever below the state-set standard one thousandth, must be with ten tongue tubes arrangements, 2 as reaching ¹⁰I.e. 1024 kinds of compound modes.Cost will increase greatly and lose practicality like this, and the control circuit element of this patent is to be welded in the printed board in addition, is contained in the box, is fixed near the interior lock body.Every switch door will vibrate, have more than is needed how long just can the damage, and the loosening or element that fractures, so reliability is lower, applicability is little.

Purpose of the present invention proposes a kind of high reliability promptly at the deficiency of above-mentioned coded lock, and pick-proof is tamper-proof, and power consumption is few, and cost is low and have an infrared electro coded lock of warning function.

The utility model is achieved in that first combination disk that the common password lock is contained in outdoors changes the code-disc that is contained in the interior infrared receiving tube composition of door into, by the aperture input infrared rays password of two corresponding with infrared receiving tube on door mm dias.Improved anti-damage ability like this.Second makes a module with cipher control circuit, and warning circuit is made another module, prevents vibration, and it is malfunctioning that corrosion etc. cause, improved reliability.Adopt switching mode integrated component and CMOS type integrated circuit in the 3rd module, quiescent current is less than 0.5 millimeter.Battery of three joints can use 1 year, and these elements belong to electron trade and use element in a large number, only 18 yuan of low prices, cost.

Be described further with accompanying drawing one below:

Circuit mainly is made up of a slice decadic pulsing counter CC4017 a slice six Schmidt's thixotroping device CC40106 and high-power switch tube TWH8778.During power connection, because C ₅Last terminal potential can not suddenly change, and trigger C exports high level, and CC4017 resets, Y ₀End output high level.C after about 5 seconds ₅The upper end becomes high potential, trigger C output low level, and CC4017 is in count status.When O ' connected the M end by a certain irradiated infrared receiving tube, the M end became high potential, was added to CC4017 pulse front edge trigger end (14 end) after trigger A shaping and trigger B are anti-phase, and CC4017 counts a number, Y ₀The end high level moves on to Y ₁On the end.This moment 1 ' trigger B output positive pulse when connecting the M end by irradiated infrared receiving tube, CC4017 counts a number, Y again ₁High level moves on to Y ₂On the end.Utilize above-mentioned high level shifting principle, Y ₀The end high level hands down, and moves ten at most, by Q _COEnd output Gao Ping is through R ₅And C ₆Delayed time for 1 second, drive mutually by trigger F, E effect again, be added on 5 ends of VT1, close a switch, export the electric current of unblanking.Pass through R when unblanking ₄To C ₄Charging, C after 10 seconds ₄Last terminal potential is higher than trigger D triggering level value, and output becomes low level, VD16 conducting, C ₅Discharge rapidly by VD16, trigger D, trigger C exports high level, and CC4017 resets, locking.C ₁, C ₃Be used for filtering interference signals.

The each several part function is as follows shown in the accompanying drawing one:

(A) is infrared light password input key among the figure one, and it is pack in a plastic toy pistol two joint No.5 cells and an infrarede emitting diode and trigger formation.Click trigger, infrarede emitting diode is once bright, make the infrared receiving tube conducting among the figure one (B),, an attaching plug also can be installed on door, often open the littler infrared light cipher key of snap switch, infrared light diode composition one to pulse of M point input.

(B) is infrared combination disk among the figure one, and it is made up of 14 infrared receiving tubes, and the aperture by last 14 2 millimeters at door can receive the infrared light password.Wherein any 10 with figure one in (C) 0 '～9 ' join, form 10 passwords.In remaining 4 any two with (C) in N, H join.When these two sign indicating number input infrared lights, start delay circuit, in 5 seconds, both made the input proper password, can not unblank.Increase confidentiality.N, G join among remaining at last two sign indicating numbers and the figure one, when these two sign indicating numbers input infrared lights, and the alarm startup, just can stop 10 seconds of reporting to the police.Combination disk is with the winding displacement output of band contact pin, so that cooperate with (C) socket.

(C) is coder module among the figure one, and it is made up of decadic pulsing counter CC4017, six Schmidt trigger CC40106, high power switch integrated circuit TNH8778 and peripheral resistance, electric capacity.Select micro element for use, it is contained in the modular cartridge commonly used both at home and abroad, encapsulate with epoxy resin.Avoid ectocines such as vibration, corrosion, improved reliability.Counter, trigger are integrated circuits commonly used in the digital circuit; but it is integrated with high power switch to be that road TWH8778 combines; maximum current can reach 1 ampere in 3 to 30 volts of voltage ranges; and overcurrent, overvoltage, overheat protective function are arranged, become peak power output and be 30 watts universal digital control module.

Module (C) totally 18 lead-out wires, they are 0 '～9 ', M, H, N, Vss, G, F, I Q _CD, receive on the socket, wherein F can be with the short electric wire and the Q of a double headed roller contact pin _CDOr other point is connected.0 '～9 ' have only successively input pulse just can unblank, but 0 '～9 ' with (B) in the combination of 0～13 contact pin be arbitrarily, so can discharge 10 factorial promptly 3.6288 * 10 ⁶The group password, promptly 3,600,000 passwords have a possibility of opening mutually, and this kind small probability event can be thought to open mutually not exist.And the user can change password easily.

For example:

Module sign indicating number number	0′	1′	2′	3′	4′	5′	6′	7′	8′	9′	F→Q _CD(connection)
												The sign indicating number reel number	3	4	8	5	2	1	7	9	6	0

At this moment have only and input password 3485217960 VT1 that just can close a switch successively, the I point output electric current of unblanking.

If think that ten password figure places are too many, as want with six, if will the F and 6 ' in (C) connection, only select six sign indicating numbers on the code-disc (B), all the other are unsettled, at this moment multipotency composition 1.50 * 10 ⁵The group password maintains secrecy that it is very strong to be still, and can reach the requirement of GB key mutual opening rate fully.For example:

Module sign indicating number number	0′	1′	2′	3′	4′	5′	F → 6 ' (connection)
								The sign indicating number reel number	7	4	9	0	8	3

At this moment VT1 I point is exported the electric current of unblanking as long as input six bit codes 749083 just can close a switch.

(D) is that the method for the transformation of the way is to utilize remaining space to install a little electromagnet additional through the door lock of the transformation of the way or (special) among the figure one.(C) during I point no-output, little electromagnet armature blocks dead bolt in, even key or the destruction pellet shot from a slingshot rotational lock core lock of also not opening is arranged.Little electromagnetic actuation during I point output current, armature is decontroled dead bolt, and VD17 is bright for the indication light emitting diode, can open lock with key at 10 seconds in the time delay.Locked a mechanical switch, can block armature, at this moment had only the function of former lock, can unblank in doors, or when the common lock use.It is easy to use and be provided with when long that this aims at the time of going out.

(E) is warning circuit among the figure one.Its operating principle is that infrared light receiving tube VD12 and VD13 are high-impedance state when no infrared light shines, IC ₃A and pin are output as high level, and switching tube VT2 opens IC ₃The MR(10 of b) end passes through R ₁₀Ground connection, IC ₃B resets, nonoscillatory, and VD12 or VD13 are subjected to infrared light irradiation the time becoming low resistance state, and low level is translated in IC3a output, and VT2 turn-offs, and IC3b is disengaged and resets and vibrate sounding alarm.

If change the infrared receiving tube in (B) into reflective infrared reception, just can save infrared light password input key (A).Use conveniently, but cost can increase by 10 yuans, this also is feasible a kind of scheme.

Claims

1, a kind of by infrared light input password rifle key, infrared combination disk, coder module, the infrared electro crypto-alarm theftproof lock that door lock and alarm module are formed is characterized in that combination disk (B) has ten passwords, each two of warning time-delay sign indicating numbers, password is inputed password by above-mentioned alarming lock (A) by the aperture of 14 2mm diameters outdoors in door, circuit (C), (E) make module, and combination disk (B) is that contact pin, female type connect with coder module, the interior magnet control dead bolt of lock body (D).

2, lock according to claim 1 is characterized in that: infrared light password input key is arranged in the plastic toy pistol, and becomes whole key by two joint No.5 cells, infrarede emitting diode with plate mechanism, and it is convenient that the user changes battery.

3, lock according to claim 1 is characterized in that: combination disk is provided with each two of ten passwords and warning, time-delay sign indicating numbers.

4, lock according to claim 1 is characterized in that: combination disk is arranged in the door, password by 14 diameters aperture that is 2mm by input outdoors.

5, lock according to claim 1 is characterized in that: circuit (C) and (E) make module and use epoxy encapsulation.

6, lock according to claim 1 is characterized in that: combination disk (B) connects with contact pin, socket mode with encoder (C).

7, lock according to claim 1 is characterized in that: the dead bolt of lock body (D) is by magnet control.