CN2316681Y - Touch-type burglar alarm - Google Patents

Abstract

The utility model discloses a touch type theft protection alarm device, comprising a magnetic device, a magnetic switch, a controlling circuit, secret code contact points, a power supply, a buzzer, an audio circuit, etc., wherein, the controlling circuit can be electrified by the power supply through the magnetic switch, at least one secret code contact point is connected with the positive end of the power supply, at least one secret code contact point is connected with the control input end of the controlling circuit, one end of the power supply of the audio circuit is connected with one end of the power supply through the magnetic switch, and the other end of the power supply of the audio circuit is connected with the control output end of the controlling circuit. When the magnetic device moves away from the magnetic switch, the magnetic switch can be electrified, and the switching time of the other end of the power supply of the audio circuit and the other end of the power supply can be controlled by the control input end of the controlling circuit. The secret code contact points are current conducting components and are installed on the surface of a theft protection object.

Description

Touch burglar alarm

The utility model relates to a kind of warning device, specifically is meant a kind of touch burglar alarm of cryptographic function so that user and burglar are made a distinction that have.

People in daily life mostly from not wallet; crowded public arena often has situations such as wallet is stolen and takes place and in motorbus, market etc.; cause puzzlement for the normal life of people; and stolen along with wallet usually; related I.D., employee's card, the credit cards etc. lost bring bigger trouble to the user.Therefore, how can in time give the alarm when similar incidents take place, to prevent trouble before it happens, be the problem that people are badly in need of solving and using up brains.All there are problems such as reliability, cost and practical feasibility in induction type schemes such as that people design is infrared, temperature-sensitive.

The purpose of this utility model just is to provide a kind of touch burglar alarm, and it has cryptographic function so that user and burglar are made a distinction, and reaches the purpose of burglar alarm, and is reliable convenient, with low cost simultaneously, has actual application value.

The purpose of this utility model is achieved through the following technical solutions.A kind of touch burglar alarm, by power supply, hummer, acoustics circuit is formed, wherein the two ends of hummer link to each other with the output signal two ends of acoustics circuit respectively, it is characterized in that: this touch burglar alarm also has a magnetic devices and at least one magnetic switch, one control circuit and the one group of password contact that is at least two, wherein, be serially connected with a magnetic switch between the power source supply end of described power supply and described control circuit, at least one password contact links to each other with the anode of described power supply, the password contact of at least one links to each other with the control input end of this control circuit, the power supply of described acoustics circuit is supplied an end and is also linked to each other with an end of described power supply by a magnetic switch, the power supply supply other end of this acoustics circuit links to each other with the control output end of control circuit, when magnetic devices leaves magnetic switch and makes its conducting, control the break-make and the make-and-break time of the other end of the other end of this acoustics circuit power supply supply and described power supply by the control input end of control circuit, these password contacts are conductive component, and are installed in the surface of antitheft thing.

Described control circuit is made up of decoding scheme, monostable circuit and on-off circuit, wherein, the control input end of control circuit is connected to the input end of decoding scheme, the output terminal of decoding scheme links to each other with the input end of monostable circuit, the output terminal of monostable circuit is connected to the control end of on-off circuit, the other end of the above-mentioned power supply of one termination of on-off circuit, the other end of on-off circuit connect the other end of above-mentioned acoustics circuit power supply supply for the control output end of this control circuit.

According to technique scheme, described password contact is three, described decoding scheme is made up of the set of number not gate, described monostable circuit is made up of two " 555 " circuit and a Sheffer stroke gate, described on-off circuit is made up of a two-way switch and a transistor, described magnetic switch is two tongue tubes, described power supply is in series by two 3V power supplys, and its center tap is connected with the power supply of above-mentioned control circuit by a tongue tube, an end that connects a password contact and two-way switch simultaneously, the other end of two-way switch is connected to the base stage of transistor, the emitter of this transistor links to each other with the negative pole of above-mentioned power supply and ground connection, its current collection is the control output end of this control circuit very, link to each other with the ground of above-mentioned acoustics circuit, the power supply of this acoustics circuit connects the positive pole of above-mentioned power supply by another tongue tube, and all the other two password contacts are received the input end of not gate respectively.

When magnetic devices leaves magnetic switch and makes its conducting, power source voltage adds on each components and parts of control circuit, makes the control output end of control circuit and the other end conducting of power supply, and supply voltage is added on the acoustics circuit, hummer promptly sends the sound, plays the function that prompting is reported to the police; When touching the password contact with hand the signal input is arranged, the monostable circuit of control circuit overturns, and makes the disconnection of the other end of the control output end of control circuit and power supply, the power supply disconnection of acoustics circuit, and hummer stops sounding immediately; Monostable circuit discharges through RC, after about 7-8 minute, returns to hummer sounding state again, goes round and begins again.Because it is a plurality of that the password contact can be established, and can be located at the diverse location on antitheft thing surface, reach a kind of effect of coding with number and arrangement position, therefore, can well user and burglar be made a distinction, reach the purpose of burglar alarm.Convenience simple in structure, with low cost, reliable has actual application value.

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

Fig. 1 is a composition frame chart of the present utility model;

Fig. 2 is the circuit block diagram of the utility model most preferred embodiment;

Fig. 3 is the circuit theory diagrams and the thick film circuit design drawing of the utility model most preferred embodiment;

Fig. 4 is the product appearance synoptic diagram of the utility model most preferred embodiment;

Fig. 5 is the utility model best applications synoptic diagram.

At first, see also shown in Figure 1, the utility model is by magnetic devices 1, magnetic switch 2, password contact 3, control circuit 4, acoustics circuit 5, hummer 6 and power supply 7 are formed, wherein the two ends of hummer 6 link to each other with output signal 53 two ends of acoustics circuit 5 respectively, the power source supply end 41 of power supply 7 and control circuit 4, be serially connected with a magnetic switch 2 between 42, at least one password contact 3 links to each other with the anode of power supply 7, the password contact 3 of at least one links to each other with the control input end 43 of control circuit 4, the power supply of acoustics circuit 5 is supplied an end 51 and is also linked to each other with an end of power supply 7 by a magnetic switch 2, its power supply supply other end 52 links to each other with the control output end 44 of control circuit 4, when magnetic devices 1 leaves magnetic switch 2 and makes its conducting, control the other end 52 of this acoustics circuit 5 power supplys supply and the break-make and the make-and-break time of the other end of power supply 7 by the control input end 44 of control circuit 4, password contact 3 is a conductive component, and is installed in the surface of antitheft thing.

See also shown in Figure 2, in most preferred embodiment of the present utility model, control circuit 4 is made up of decoding scheme, monostable circuit, on-off circuit, wherein on-off circuit comprises a two-way switch 4066 and a transistor BG, decoding scheme is made up of the set of number not gate, monostable circuit is made up of two " 555 " circuit and a Sheffer stroke gate, and gate circuit is selected NAND gate circuit 4011 for use.Password contact 3 is three, magnetic switch 2 is two tongue tubes, for reaching power saving and not influencing volume, power supply 7 is in series by two 3V power supplys, its center tap is connected with the power supply of control circuit by a tongue tube, 1 pin that connects a password contact and two-way switch 4066 simultaneously, its 2 pin is connected to the base stage b of transistor BG, emitter e connects the negative pole and the ground connection of power supply 7, its collector c is the control output end 44 of this control circuit 4, link to each other with 8 pin ground of acoustics circuit 4049, power supply 1 pin of this acoustics circuit 4049 is received the positive pole of power supply 7 by another tongue tube, and all the other two password contacts are received the input end of not gate respectively.

When magnetic devices 1 leaves magnetic switch 2, magnetic switch 2 conductings, make the 3V voltage of power supply 7 add to control circuit 4, not gate 4011 is output as high level, two " 555 " circuit form monostable circuit, output is all low level, Sheffer stroke gate 4011 output high level, two-way switch 4066 conductings make transistor BG conducting, and the control output end 44 of control circuit 4 is communicated with the negative terminal of power supply 7, the power supply negative terminal of acoustics circuit 5 is communicated with the negative terminal of power supply 7, make the 6V voltage of power supply 7 add to the two ends of acoustics circuit 5, hummer 6 promptly sends the sound, has the prompting warning function.

When touching password contact 3 simultaneously with finger, promptly give not gate 4011 input ends one positive pulse, make it be output as low level, two " 555 " monostable upsets, its 3 pin is output as high level, and Sheffer stroke gate 4011 is output as low level, two-way switch 4066 not conductings, transistor BG ends, and the power supply of acoustics circuit 5 disconnects, and hummer 6 stops sounding immediately.Monostable circuit discharges through RC, after about 7-8 minute, returns to hummer sounding state again, goes round and begins again.

In actual applications, but the utility model best applications on wallet.See also Fig. 3 to shown in Figure 5, power supply adopts button cell, control circuit, acoustics circuit can integrated design one thick film circuits, and the utility model integrated except that magnetic devices, password contact is installed in the antitheft card 9 of a thin-slab construction, and the control input end of control circuit is led on the card outside surface by copper-foil conducting electricity 91.This antitheft card 9 is located in the interlayer of wallet 8, and password contact 3 penetrates wallet and is located on the surface of wallet 8, is connected with copper-foil conducting electricity 91 contacts.Be to increase sensitivity and reliability, avoid owing to move the error that causes, magnetic devices can be designed to the cigarette type bar magnet structure is made up of the magnetic patch more than 12, is placed on the container bottom of adorning wallet.Pin when user's finger and to be located at wallet 8 lip-deep password contacts 3 when taking out wallets, promptly can not send the sound because of above-mentioned reason hummer; If the people except that the user, for example the thief because it can not take out wallet according to above-mentioned requirements, and makes hummer send the sound, plays prompting, caution user's purpose.Be exactly after the user takes out wallet as requested and uses,, after 7-8 minute (the RC discharge circuit is designed), also can send the sound, to remind the user if forget and replace.Password contact 3 can be established a plurality of, and can be located at the diverse location on wallet surface, reaches a kind of effect of coding with number and arrangement position, can well user and burglar be made a distinction.The utility model convenience simple in structure, with low cost, reliable has actual application value.

In addition, the utility model also can be conveniently used on the door in room, magnetic devices of the present utility model can be installed on the doorframe, the structure that is integrated in one except that magnetic devices, password contact is installed on the door, and the corresponding magnetic devices of magnetic switch position is provided with, the password contact is located on the door exterior surface, is connected in the control input end of control circuit by lead.When the owner in non-room with just when or improper mode when opening door because it does not have " releasing " cipher control, therefore, the utility model also can send the sound, reports to the police.

Claims (7)

1, a kind of touch burglar alarm, by power supply, hummer, acoustics circuit is formed, wherein the two ends of hummer link to each other with the output signal two ends of acoustics circuit respectively, it is characterized in that: this touch burglar alarm also has a magnetic devices and at least one magnetic switch, one control circuit and the one group of password contact that is at least two, wherein, be serially connected with a magnetic switch between the power source supply end of described power supply and described control circuit, at least one password contact links to each other with the anode of described power supply, the password contact of at least one links to each other with the control input end of this control circuit, the power supply of described acoustics circuit is supplied an end and is also linked to each other with an end of described power supply by a magnetic switch, the power supply supply other end of this acoustics circuit links to each other with the control output end of control circuit, when magnetic devices leaves magnetic switch and makes its conducting, control the break-make and the make-and-break time of the other end of the other end of this acoustics circuit power supply supply and described power supply by the control input end of control circuit, these password contacts are conductive component, and are installed in the surface of antitheft thing.

2, touch burglar alarm according to claim 1, it is characterized in that: described control circuit is made up of decoding scheme, monostable circuit and on-off circuit, wherein, the control input end of control circuit is connected to the input end of decoding scheme, the output terminal of decoding scheme links to each other with the input end of monostable circuit, the output terminal of monostable circuit is connected to the control end of on-off circuit, the other end of the above-mentioned power supply of one termination of on-off circuit, the other end of on-off circuit connect the other end of above-mentioned acoustics circuit power supply supply for the control output end of this control circuit.

3, touch burglar alarm according to claim 2, it is characterized in that: described password contact is three, described decoding scheme is made up of the set of number not gate, described monostable circuit is made up of two " 555 " circuit and a Sheffer stroke gate, described on-off circuit is made up of a two-way switch and a transistor, described magnetic switch is two tongue tubes, described power supply is in series by two 3V power supplys, and its center tap is connected with the power supply of above-mentioned control circuit by a tongue tube, an end that connects a password contact and two-way switch simultaneously, the other end of two-way switch is connected to the base stage of transistor, the emitter of this transistor links to each other with the negative pole of above-mentioned power supply and ground connection, its current collection is the control output end of this control circuit very, link to each other with the ground of above-mentioned acoustics circuit, the power supply of this acoustics circuit connects the positive pole of above-mentioned power supply by another tongue tube, and all the other two password contacts are received the input end of not gate respectively.

4, according to the arbitrary described touch burglar alarm of claim 1 to 3, it is characterized in that: described power supply adopts button cell, described control circuit, acoustics circuit can integrated design one thick film circuits, and described touch burglar alarm integrated except that magnetic devices, password contact is installed in the antitheft card of a thin-slab construction, and the control input end of control circuit is led on the card outside surface by copper-foil conducting electricity.

5, according to claim 1 or 4 described touch burglar alarms, it is characterized in that: described antitheft thing is a wallet, and in the antitheft interlayer that is arranged in wallet, the password contact penetrates wallet and is located on the wallet surface, is connected with the copper-foil conducting electricity contact.

6, touch burglar alarm according to claim 1 is characterized in that: described magnetic devices is a cigarette type bar magnet structure of being made up of 12 magnetic patch.

7, touch burglar alarm according to claim 1, it is characterized in that: described antitheft thing is one, the magnetic devices of described touch burglar alarm can be installed on the doorframe, the structure that is integrated in one except that magnetic devices, password contact is installed on the door, and the corresponding magnetic devices of magnetic switch position is provided with, the password contact is located on the door exterior surface, is connected in the control input end of control circuit by lead.

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