CN2167417Y - Electronic alarm - Google Patents

Abstract

The utility model relates to an alarm device used for a door lock, comprising a wireless transmitter 1 used for emitting a code signal, a wireless receiver 2 used for receiving and identifying a code electrical signal, a self-oscillation type inductive sensor 3 which stops resonance when a human body approaches, a logic circuit 5 used for carrying out logical judgement to an owner and a non-owner, and an alarm circuit 6 which sends out an alarm signal after the alarm circuit 6 receives the active level sigal outputted by the logic circuit 5. When the alarm device used for a door lock is used, the existing door lock does not need any reform. The alarm device used for a door lock carries out automatic recognition to the owner, a client, and a larcener. The owner does not need to memorize any code, and does not need to input any code.

Description

Electronic alarm

The utility model relates to a kind of warning device.

The door lock that generally is used at present burglar alarm all is to adopt mechanical code lock or electron detection to add the lockset of electronic cipher mode.All need special lockset, and need keep password firmly in mind, the password figure place is many more, and confidentiality is strong more.Forget about password easily but also have, so that the worry that can't open coded lock.Do not have recognition capability with the electronics detection mode, can trigger warning system when promptly the robber commits theft, but user or general non-stealer also can be reported to the police its false triggering.

The purpose of this utility model is: a kind of electronic alarm device that can discern automatically owner and owner non-is provided.

The technical solution of the utility model is: the utility model comprises the wireless launcher that is used to launch code signal; Be used to receive and differentiate the message in cipher number of wireless launcher 1 emission, export the wireless receiver of a significant level when no signal or the code signal that receives do not conform to the predetermined cipher signal; A self-excited oscillation type induction pick-up, described induction pick-up object contact or near the time stop resonance and export a significant level; The logical circuit that is used for receiving the level signal of wireless receiver and inductosyn output respectively and carries out logic determines, significant level signal of logical circuit output when inductosyn 3 and wireless receiver output significant level signal; Receive the warning circuit that sends alerting signal behind the significant level signal of logical circuit output.Wireless launcher has the electric signal of password or the radio signal of characteristic frequency by the antenna emission, and the distance of emission is to get final product about 1.5 meters, and transmitter can be carried.Wireless receiver receives radio signals and carries out signal and differentiate, if the signal of being differentiated is identical with predefined password or frequency, then represent owner near alarm, induction pick-up is because the close resonance that stops of human body, do not work through the logical circuit logic alarm of having no progeny.If not owner is near alarm, then satisfaction induction sensor failure of oscillation and wireless receiver do not receive the condition of code signal, and both all export effective level signal to logical circuit, and logical circuit just triggers warning circuit work.

The utility model compared with prior art has following advantage:

The wireless launcher volume is little, can wear with oneself, is discerned automatically by the wireless receiver on the alarm, needn't memory cipher and the input password, and the situation of false triggering can not appear, and very convenient during use.Password or frequency can set arbitrarily, be difficult for being cracked.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is a circuit block diagram of the present utility model;

Accompanying drawing 2 is a circuit working schematic diagram of the present utility model.

Referring to accompanying drawing 1, the utility model comprises the wireless launcher 1 that is used to launch code signal; Be used to receive and differentiate the message in cipher number of wireless launcher 1 emission, export the wireless receiver 2 of a significant level when no signal or the code signal that receives do not conform to the predetermined cipher signal; A self-excited oscillation type induction pick-up 3, described induction pick-up 3 object contact or near the time stop resonance and export a significant level; The logical circuit 5 that is used for receiving the level signal of wireless receiver 2 and inductosyn 3 outputs respectively and carries out logic determines, significant level signal of logical circuit 5 outputs when inductosyn 3 and wireless receiver 2 output significant level signals; Receive the warning circuit 6 that sends alerting signal behind the significant level signal of logical circuit 5 output.It also comprises an infrared sensor 4, and described infrared sensor 4 is exported a significant level signal to logical circuit 5 after receiving infrared signal.Described logical circuit 5 receives the level signal of wireless receivers 2, inductosyn 3, infrared sensor 4 outputs, and three level signals that received when logical circuit 5 are complete exports an effective level signal to warning circuit 6 effectively the time.Referring to accompanying drawing 2, described wireless launcher 1 comprises the sound signal oscillator, the sound signal of sound signal oscillator output is carried out the high frequency oscillator of carrier wave simultaneously.The tone decoder of the amplifier that described wireless receiver 2 comprises the super-regenerative receiver of carrying out detection to the received signal, amplify the sound signal of super-regenerative receiver output, a level signal of audio signal frequency discriminated union output that is used for pair amplifier output.The outputs level signals of described infrared sensor 4 selects 12 to be connected to doorbell circuit 13 through switch.The outputs level signals of described infrared sensor 4 selects 12 to be connected to language answering circuit 14 through switch.The warning trigger pip end of described warning circuit 6 also is connected to delay circuit 7, and the output terminal of this delay circuit 7 is connected to the triggering input end of high pressure generator 9 by output interface 8.Described output interface 8 also is connected to time latch cicuit 11 and camera driving circuit 10.Referring to accompanying drawing 2, audio frequency oscillator in the wireless launcher 1 is made up of triode BG1, BG2, resistance R 1, R2, R3, capacitor C 1, R1, C1 are used to produce specific audio frequency, the high frequency oscillator of this sound signal level after capacitor C 2 is coupled to, described high frequency oscillator is made up of resistance R 4, R5, capacitor C 3, C4, triode BG3, inductance L 1, L2 and antenna T5, on the high-frequency signal that voice carrier produces to high frequency oscillator, the high-frequency signal after antenna T5 emission heavenwards emission modulation.+ 3V is the power supply that is connected on the whole wireless launcher.In the induction pick-up 3, BG7 forms high frequency oscillator by Technitron, oscillation frequency is by telefault L5, capacitor C 17 decisions of parallel connection, be connected to touch electrode T1 on the inductance L 5, capacitor C 18 is a coupling capacitance, diode D2 carries out half-wave rectification (playing wave detector), and triode BG8, BG9, BG10 are used for signal and amplify.Adjust the power of R14, L5 may command induction sensitivity, nobody the time, the collector 23 of BG10 is output as low level, if the people is arranged or have that big electric conductor is approaching, during contact, the high frequency oscillator circuit is failure of oscillation, 23 output high level (significant level signal).Infrared sensor 4 comprises sensor, amplifier, monostable circuit, use LS-064 wide-angle type Thermoelectric Infrared Sensor T2 to be receiving element, very responsive to the infrared waves that mobile human body sends, it is sent the signal that receives into operational amplifier IC4, IC5, IC6 that model is LM324 and carries out after signal amplifies, send into triode BG11 paraphase again and amplify, go to trigger the monostable circuit of forming by ic 555 (IC7) again.When the people walked about in infrared ray sensor T2 front, IC7 exported high level (significant level) through 22 lead-in wires, 22 lead-in wire output low levels when nobody walks about.In wireless receiver 2, by resistance R 8, R7, capacitor C 8, C9, C6, C7, inductance L 4 is formed super-regenerative receiver, play a part the sound signal detection, higher sensitivity is arranged, when receiving the high-frequency signal that wireless launcher 1 sends, behind superregenerative detection, send into by triode BG5, the low-frequency amplifier that BG6 forms, through being amplified into by the IC1(model is LM567) tone decoder that constitutes differentiates, sound signal as reception is the centre frequency of tone decoder, then the output terminal 20 of IC1 is a low level, otherwise is high level (significant level).Because audiorange is very wide, therefore can wireless receiver 1, wireless launcher 2 be combined into the encryption apparatus that numerous different password matches, in order to improve the confidentiality of this device according to various audio frequency.Logical circuit 5 by Sheffer stroke gate IC2, with the door IC3 form, when IC3 AND circuit input end 23,22 was high level, 21 outputs of IC3 output terminal also were high level, when two input ends of IC2 20,21 are high level, the output terminal of IC2 is low level (significant level), otherwise is high level.Therefore the duty of three-way sensor is depended in the output of IC2: 1. when wireless launcher 1 no signal or output signal are inaccurate (unmanned or non-owner's arriving), wireless receiver 2 is output as high level; 2. when receiving signal, induction pick-up 3 is output as high level (people being arranged) near door lock; 3. (someone moves) is output as high level when infrared sensor 4 receives signal.This shows, have only when satisfying above-mentioned three conditions, IC2 ability output low level, triggering is 555 by the IC10(model), the monostable circuit that constitutes of resistance R 38, capacitor C 29, C30, high level of base stage output to triode BG16, triode BG16 conducting, triggering by ic chip 11(model is KD-9562) warning circuit 6 formed, loudspeaker Y 1 is promptly sent chimes of doom.If IC10 is triggered once more or continued triggering, by R40, C32 is the main delay circuit of forming 7 and by ic chip 12(555 circuit), the break-and-make switch circuit of capacitor C 33, resistance R 41 formations will open, connection is the main high pressure generator of forming 9 by transformer B1, B2, controllable silicon KG2 is switched on simultaneously, relay coil J1 gets, corresponding contact J1-1 closes, and camera driving circuit 10(is T4) action, time latch cicuit 11(is crystal clock T3) stop to walk about because of dead electricity.Switch selects 12 to be made up of K switch 1, when owner is in, K1 is placed left position (doorbell position), as long as someone enters infrared spectral range, infrared sensor 4 with the significant level signal through capacitor C 38 coupling after K switch 1 is delivered to language IC circuit 8(model is MS-0600) and doorbell circuit IC9(model be KD-9562), loudspeaker Y 2 can be sent doorbell sound and loudspeaker Y 1 can be sent the greeting of " you are good, welcome " and so on, and this moment, warning circuit 6 and high pressure generator 9 were not all worked.When owner goes out, K switch 1 can be placed location right, set high pressure as need and K2 also can be closed.Go home as owner this moment, because the wireless launcher of wearing with oneself 1 makes wireless receiver 2 receive sound signal, 20 pins are low level, warning circuit 6 is not triggered, and high pressure generator 9, time latch cicuit 11, camera driving circuit 10 are not all worked, and all are as good as with opening the door at ordinary times.If any stranger's presence, enter infrared spectral range, then infrared sensor 4 work, sending the language of " owner goes out, and please wait a moment comes again " by language IC circuit 8, is the burglar as the person that has come, must remove the lock of forcing open the door, because wireless receiver 2 is output as high level, induction pick-up 3 output high level, infrared sensor 4 output high level, this moment, warning circuit 6 was triggered, alert sound your writing, the warning stealer is to reach the purpose of driveing.Continue crime as the thief, then high-tension circuit action, and photograph the stealer image, note and do between ampere-hour.

Claims (9)

1, a kind of electronic alarm, it is characterized in that: it comprises

Be used to launch the wireless launcher 1 of code signal;

Be used to receive and differentiate the message in cipher number of wireless launcher 1 emission, export the wireless receiver 2 of a significant level when no signal or the code signal that receives do not conform to the predetermined cipher signal;

A self-excited oscillation type induction pick-up 3, described induction pick-up 3 object contact or near the time stop resonance and export a significant level;

The logical circuit 5 that is used for receiving the level signal of wireless receiver 2 and inductosyn 3 outputs respectively and carries out logic determines, significant level signal of logical circuit 5 outputs when inductosyn 3 and wireless receiver 2 output significant level signals;

Receive the warning circuit 6 that sends alerting signal behind the significant level signal of logical circuit 5 output.

2, electronic alarm according to claim 1 is characterized in that: it also comprises an infrared sensor 4, and described infrared sensor 4 is exported a significant level signal to logical circuit 5 after receiving infrared signal.

3, according to claim 1 or the described electronic alarm of claim 2, it is characterized in that: described logical circuit 5 receives the level signal of wireless receivers 2, inductosyn 3, infrared sensor 4 outputs, and three level signals that received when logical circuit 5 are complete exports an effective level signal to warning circuit 6 effectively the time.

4, electronic alarm according to claim 1 is characterized in that: described wireless launcher 1 comprises the sound signal oscillator, the sound signal of sound signal oscillator output is carried out the high frequency oscillator of carrier wave.

5, electronic alarm according to claim 1 is characterized in that: the tone decoder of the amplifier that described wireless receiver 2 comprises the super-regenerative receiver of carrying out detection to the received signal, amplify the sound signal of super-regenerative receiver output, a level signal of audio signal frequency discriminated union output that is used for pair amplifier output.

6, electronic alarm according to claim 2 is characterized in that: the outputs level signals of described infrared sensor 4 selects 12 to be connected to doorbell circuit 13 through switch.

7, electronic alarm according to claim 2 is characterized in that: the outputs level signals of described infrared sensor 4 selects 12 to be connected to language answering circuit 14 through switch.

8, electronic alarm according to claim 1 is characterized in that: the warning trigger pip end of described warning circuit 6 also is connected to delay circuit 7, and the output terminal of this delay circuit 7 is connected to the triggering input end of high pressure generator 9 by output interface 8.

9, electronic alarm according to claim 8 is characterized in that: described output interface 8 also is connected to time latch cicuit 11 and camera driving circuit 10.