CN2285345Y

CN2285345Y - Remote safety lock

Info

Publication number: CN2285345Y
Application number: CN 95213013
Authority: CN
Inventors: 杜振辉; 王剑冰
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-20
Filing date: 1995-06-20
Publication date: 1998-07-01
Anticipated expiration: 2005-06-20

Abstract

The utility model discloses a remote safety lock whose lock body is arranged in a hidden place. The utility model is characterized in that the safety lock is divided into two parts which are an electronic key and an electric control lock main body. The function that the electronic key can transmit the electromagnetic wave carrying unlocking code information is utilized to unlock the electric control lock noncontactly. The electric control lock main body can be arranged at any position at the inner side of the door. The utility model is not only applicable to a civil house, but also to the places in the same class with a bank, a shop, an institution, a filing room, a financial accounting room, and a storehouse.

Description

A kind of remote control safety lock

The utility model relates to a kind of residential houses safety convenience instrument, specifically is a kind of safety lock of being made up of electron key, electric control lock main body.

Chinese patent 2061585 and Chinese patent 2063559 disclosed electronic password locks, their common defects are that main lock body is disguised poor, be easy to by the purlonier use habitual sled, pound, gimmick destruction such as brill.

The purpose of this utility model provides a kind of novel safety lock, and its lock body installation site is hidden, after the door locking, can't find out the concrete installation site of lock body from the outside.

For solving above-mentioned task, the solution that the utility model adopts is: safety lock is divided into electron key, electric control lock main body two parts, electron key mainly is made of coding, frequency modulation, emission three partial circuits, behind the encoded circuit of unlocking cipher, form touch-tone signal, behind FM circuit, realize the frequency modulation(PFM) of unlocking cipher, after the radiating circuit emission to high frequency carrier; The electric control lock main body mainly comprises receiving circuit, decoding gating, password setting, identification gating, error code is reported to the police with prohibit circuit temporarily, standby electric power is formed.Receiving circuit carries out gating amplification, frequency discrimination, sends to decoding then the high frequency frequency-modulated wave that is loaded with unlocking cipher that receives, and contrasts with giving the password of putting, and when the input password was correct, circuit produced unlocking signal, and the electromagnetic actuation dead bolt is finished remote-control unlocking.So just can solve the disguised problem of lock body.Utilize electron key to launch and carry the electromagnetic function of unlocking cipher information, can open electric control lock untouchablely, accomplish remote-control unlocking.The electric control lock main body can be installed in any position of an inboard, limit.Owing in stating solution, adopted safety lock of the present utility model be divided into electron key, the two-part technical scheme of electric control lock main body, its disguise is by force the most outstanding characteristics of this safety lock, simultaneously owing to adopt electronic circuit decoding, cipher safety is good, in case and password gives away secrets, the user can change at any time easily, independently set.In addition, same model safety lock electron key is identical, and different only is that giving of being provided with in the electric control lock main body put password.Like this, electron key is not afraid of and is lost, and can not divulge a secret even lose yet, and the stranger utilizes still do not open your electric control lock of your electron key.Do not resemble mechanical lock popular on the market, after the key loss, generally need change lock again.And electron key is lost or when leaving behind, others' electronic key unlocking that can borrow temporarily, or only buy electron key and get final product.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the circuit theory diagrams of the utility model electron key;

Fig. 2 is the utility model electric control lock main body circuit theory diagrams;

In the electron key circuit theory diagrams described in Fig. 1, electron key mainly is made of coding, frequency modulation, emission three partial circuits, behind the encoded circuit of unlocking cipher, form touch-tone signal, behind FM circuit, realize the frequency modulation(PFM) of unlocking cipher, after the radiating circuit emission to high frequency carrier.Coding circuit is made of encoded keyboard and ic chip 1 dual-tone multifrequency decoding circuit S2556, and the ranks output of encoded keyboard connects the input of IC1, and the output of IC1 connects the negative terminal of varactor D1 by capacitor C 1, resistance R 1.The double-tone multi-frequency coding signal that encoded circuit produces is coupled to varactor D1 two ends through C1, and the capacity of varactor becomes with the touch-tone signal of input; Constitute electric capacity trifocal oscillating circuit by transistor BG1, capacitor C 2, C3, C4, inductance L 1, produce high-frequency carrier signal, along with the variation of varactor D1 capacity, circuit carries out frequency modulation(PFM) to high frequency carrier, realizes the purpose of unlocking cipher signal loading to high frequency carrier.Modulated signal is amplified by transistor BG2, is emitted by antenna at last.

For fear of interference to other electrical equipment, prevent maloperation to other remote control safety lock, the transmitting power of electron key is very little, and operating distance is less than 5 meters, and the power supply of electron key adopts the low capacity packed cell.

In the electric control lock main body circuit theory diagrams of Fig. 2, the electric control lock main body mainly comprises receiving circuit, decoding gating, password setting, identification gating, error code is reported to the police with taboo circuit, drive circuit, standby electric power are formed temporarily.Receiving circuit carries out gating amplification, frequency discrimination, sends into decoding circuit decoding then the high frequency frequency-modulated wave that is loaded with unlocking cipher that receives, contrast with giving the password of putting, when the input password was correct, circuit produced unlocking signal, the electromagnetic actuation dead bolt is finished remote-control unlocking.IC15 is television field frame integrated package TA7176.Here utilize the frequency discrimination of this television field frame integrated package, hang down the effect of putting, the high-frequency fm signal that is loaded with the unlocking cipher signal by the electron key emission that receives is carried out gating to be amplified, frequency discrimination, demodulate the output of unlocking cipher touch-tone signal by IC15, through resistance R 2, input 2 pin of R3 dividing potential drop input IC16 decoding circuit integrated package, in IC16, touch-tone signal at first is interpreted into the tetrad digital code, then by 11 of four parallel-by-bit delivery outlet IC16,12,13,14, pin is exported, and receives the input 2 of ic chip 2,3,21,22 pin.Ic chip 2 is one 4 line-16 line decoder CD4514, and the time marquis of the every output binary number of IC16 has the 15 pin output of lock-out pulse through IC16, receives 1 pin of IC2 and the CP end of an ic chip 3 decade counter CD4017 respectively.Eight thumbwheel switch FK1-FK8 of the output series connection of IC2 can be provided with password voluntarily by the user, and the thumbwheel switch that is about to corresponding position is allocated on the corresponding digital.Can whether the data signal of unblanking that decoding is come out gives the password of putting with the user conforms to, be the key that unblank, and this finishes by the identification gating circuit among Fig. 2.The decimal number decoding output of decade counter IC3, two input four AND circuit IC4, IC5 and the IC2 that is made of double D trigger circuit CD4013 is under the count pulse effect of decade counter IC3, successively with the FK1-FK8 thumbwheel switch in corresponding presetting cipher relatively, when certain password of input is identical with corresponding thumbwheel switch corresponding positions password, then corresponding with this IC4, IC5 two inputs are opened with door, and, make it to export high level with the d type flip flop set of this correspondence among the IC6-IC9.In this case, the NAND gate 74LS134 output 9 pin output low levels of IC10 band control end, be input to the input of IC11 dual time base circuit ic chip M7556, after time-delay, output 8 pin of IC11 are sent unlocking signal, make a VMOS switching tube of T1 IRF82 conducting, relay J 1 adhesive, drive the electromagnetic actuation dead bolt, finish and open the electric control lock action.And under the effect of IC11 dual time base circuit, time-delay back circuit restoration is former armed state.

If in the password of keying in any one wrong, be referred to as error code traditionally.The D of then corresponding position touches and must can not be triggered high level by device, and then IC10 can not overturn, output low level, and then IC11 just can not export unlocking signal, electric control lock is not just opened.For increasing the safety of electric control lock, also designing in the utility model has the error code warning and prohibits circuit temporarily in the practice.When the intact complete password of every input, if error code, then the counting of another decade counter IC12 in circuit error code number of times is got off by the LED record that is connected on IC12 output Q1-Q9, checks in order to the room owner afterwards.The first two times error code, circuit all give buzzing by buzzer and report to the police.From error code for the third time, each error code operation prohibits order and gives capacitor C5 charging simultaneously all can for one on another input 1 pin of dual time base circuit IC11 temporarily.Because another input 1 pin of dual time base circuit IC11 and the anode of an electrolytic capacitor C5 are all received in the output of the Q3-Q9 of IC12 in the circuit.In this case, high level of output 5 pin output of IC11, locking IC10, and by the diode D2 double D trigger IC6-IC9 that resets, like this with regard to locking identification gating circuit and IC10, at capacitor C5 interdischarge interval, output 5 pin of IC11 are always exported a high level locking IC10, and, show interdischarge interval at capacitor C5 from effect by the diode D2 double D trigger IC6-IC9 that resets, input any password, comprise correct, all ignore, after capacitor C5 discharge, just the input password is differentiated, make it action.Here it is error code warning circuit and temporary operating principle of prohibiting circuit.

For when civil power cuts off the power supply, do not hinder the use of remote control safety lock, in Fig. 2, also be provided with the standby electric power circuit.Usually civil power is through the transformer step-down, and the bridge rectifier rectification is after IC14 three-terminal voltage-stabilizing circuit 7809 obtains operating voltage+Vc.Relay J 2 is supplied with at civil power and just often is attracting state, and when civil power stopped supplying, J2 discharged, and circuit utilizes the standby electric power storage battery power supply to keep the safety lock operate as normal.

Certainly; when concrete processing of circuit; the utility model is not limited to above-mentioned circuit connecting mode; the carrier that electron key sends unlocking cipher also is not limited to electromagnetic wave; utilize the frequent ultrasonic wave that uses, infrared rays etc. in the prior art, can be used as the carrier of unlocking cipher equally, can reach goal of the invention of the present utility model equally; the variation of these circuit all should fall into protection domain of the present utility model.

Claims

1, a kind of remote control safety lock of mainly forming by plastic casing, key, lock body, dead bolt, it is characterized in that: described key is an electron key, be and the discrete parts of electric control lock main body, in order to the information that unlocking cipher is carried in emission, electron key mainly is made of coding, frequency modulation, emission three partial circuits, behind the encoded circuit of unlocking cipher, form touch-tone signal, behind FM circuit, realize the frequency modulation(PFM) of unlocking cipher, after the radiating circuit emission to high frequency carrier; Coding circuit is made of encoded keyboard and ic chip 1 dual-tone multifrequency decoding circuit S2556, the ranks output of encoded keyboard, connect the input of IC1, the output of IC1 connects the negative terminal of varactor D1 by capacitor C 1, resistance R 1, the double-tone multi-frequency coding signal that encoded circuit produces, be coupled to varactor D1 two ends through C1, the capacity of varactor becomes with the touch-tone signal of input; Constitute electric capacity trifocal oscillating circuit by transistor BG1, capacitor C 2, C3, C4, inductance L 1, produce high-frequency carrier signal, variation along with varactor D1 capacity, circuit carries out frequency modulation(PFM) to high frequency carrier, realize the purpose of unlocking cipher signal loading to high frequency carrier, modulated signal is amplified by transistor BG2, is emitted by antenna at last.

2, a kind of remote control safety lock of mainly forming by bright outside the plastics, key, lock body, dead bolt, it is characterized in that: described lock body is an automatically controlled lock body, the electric control lock main body mainly comprises receiving circuit, decoding gating, password setting circuit; Receiving circuit carries out gating amplification, frequency discrimination, sends into decoding then the high frequency frequency-modulated wave that is loaded with unlocking cipher that receives, and contrasts with giving the password of putting, and when the input password was correct, circuit produced unlocking signal, and the electromagnetic actuation dead bolt is finished remote-control unlocking; The output of receiving circuit IC15, input 2 pin through resistance R 2, R3 dividing potential drop input IC16 decoding circuit integrated package, in IC16, touch-tone signal at first is interpreted into the tetrad digital code, then by four parallel-by-bit delivery outlets, 11,12,13,14 pin of IC16 are exported, and receive input 2,3,21,22 pin of ic chip 2.Ic chip 2 is one 4 line-16 line decoder CD4514, in the time of the every output binary number of IC16, the 15 pin output of lock-out pulse through IC16 is all arranged, receive 1 pin of IC2 and the CP end of an ic chip 3 decade counter CD4017 respectively, eight thumbwheel switch FK1-FK8 of the output series connection of IC2, can password be set voluntarily by the user, the thumbwheel switch that is about to corresponding position is allocated on the corresponding digital, whether the data signal of unblanking that decoding is come out gives the password of putting with the user conforms to, it is the key that to unblank, this finishes by the identification gating circuit, decade counter IC3, two inputs, four AND circuit IC4, IC5, with the decimal number decoding output of touching the IC2 that must device circuit CD4013 constitutes by two D under the count pulse effect of decade counter IC3, successively with the FK1-FK8 thumbwheel switch in corresponding presetting cipher relatively, when certain password of input is identical with corresponding thumbwheel switch corresponding positions password, then corresponding IC4 with this, IC5 two inputs are opened with door, and will all be changed to high level at this moment with eight d type flip flops among the IC6-IC9, IC10 is with the NAND gate 74LS134 output 9 pin output low levels of control end, is input to the input of IC11 dual time base circuit ic chip M7556.