CN209433513U

CN209433513U - A kind of high reliability burglar alarm

Info

Publication number: CN209433513U
Application number: CN201920327086.7U
Authority: CN
Inventors: 李祥会
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2019-09-24
Anticipated expiration: 2029-03-15

Abstract

The utility model discloses a kind of high reliability burglar alarm, including battery E, switch S, resistance R1, thyristor SCR, at least one is used to trigger the normally closed switch AN and alarm module that alarm；The anode of the battery E is connect with the second end of the switch S；The first end of the switch S is connect with the first end of the resistance R1, the alarm module respectively；The cathode of the battery E is connect with the cathode of the thyristor SCR, the alarm module respectively；The anode of the thyristor SCR is connect with the alarm module；At least one described switch AN is parallel between the control electrode of the thyristor SCR and the second end of the resistance R1；Even if the alarming trigger switch of the utility model is destroyed, alarm module can also be worked normally, and play due warning function；The circuit structure of the utility model on the original basis, can be compatible with multiple alarming trigger switchs, multiple to antitheft place for realizing monitoring.

Description

A kind of high reliability burglar alarm

Technical field

The utility model relates to arrive burglar alarm technical field more particularly to a kind of high reliability burglar alarm.

Background technique

Burglar alarm is to generate warning function a kind of electronic equipment by physical method or electronic technology, it is mainly by preventing Alarm host machine is stolen to collectively constitute with burglar alarm accessory.Usually in use, occurred by the detection of burglar alarm accessory in cloth Intrusive behavior in anti-monitoring region is actively triggered by accessory, generates alarm signal, and alarm signal is transmitted further to alarm master Machine issues warning note by alarm host machine.

There are many its type, and switch alarm, acoustic alarm, induction alarm device, infrared report can be divided into from working principle Alert device, laser avoidance device etc..

Current burglar alarm trigger switch is generally installed near object to be monitored, even implicit installation, is also easy to meet with Due warning function is not had to destruction, therefore, the prior art is defective, needs to improve.

Utility model content

The utility model provides a kind of high reliability burglar alarm, the above problem of solution.

To solve the above problems, the technical scheme that the utility model is provided is as follows:

A kind of high reliability burglar alarm, including battery E, switch S, resistance R1, thyristor SCR, at least one is used for Trigger the normally closed switch AN and alarm module of alarm；The anode of the battery E is connect with the second end of the switch S；It is described The first end of switch S is connect with the first end of the resistance R1, the alarm module respectively；The cathode of the battery E respectively with The cathode of the thyristor SCR, alarm module connection；The anode of the thyristor SCR is connect with the alarm module；Extremely A few switch AN is parallel between the control electrode of the thyristor SCR and the second end of the resistance R1.

Preferred technical solution, the alarm module include resistance R2-R3, triode VT1-VT2, buzzer BL and integrate IC circuit.

6th pin of preferred technical solution, the Integrated circuit IC is connect by the resistance R2 with the 7th pin；Institute The 3rd pin for stating Integrated circuit IC is connect with the base stage of the triode VT1；The second end of the resistance R3 is respectively with described three The base stage connection of the collector of pole pipe VT1, the triode VT2；The hair of the first end of the resistance R3 and the triode VT2 Emitter-base bandgap grading connection；The collector of the triode VT2 is connect with the first end of the buzzer BL；The transmitting of the triode VT1 Pole is connect with the second end of the buzzer BL.

Preferred technical solution, the model 3DG6 of the triode VT1；The model 3AX81 of the triode VT2.

Preferred technical solution, the model KD-9561 of the Integrated circuit IC.

Preferred technical solution, the voltage of the battery E are DC4.5V.

Preferred technical solution, the model 3CT2K of the thyristor SCR.

Beneficial effect compared with the existing technology is, using the above scheme, even if the alarming trigger switch of the utility model It is destroyed, alarm module can also work normally, and play due warning function；The circuit structure of the utility model is original On the basis of, multiple alarming trigger switchs can be compatible with, it is multiple to antitheft place for realizing monitoring；Circuit structure is simplified, and is used Component number is few and at low cost, manufacture easy to produce.

Detailed description of the invention

Illustrate embodiment or technical solution in the prior art in order to clearer, it below will be to embodiment or the prior art The required attached drawing used is briefly described in description, it is clear that, the accompanying drawings in the following description is only the one of utility model A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these Attached drawing obtains other attached drawings.

Fig. 1 is a kind of high reliability burglar alarm circuit schematic diagram of the utility model.

Specific embodiment

For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different Form is realized, however it is not limited to this specification described embodiment.On the contrary, purpose of providing these embodiments is makes to this The understanding of the disclosure of utility model is more thorough and comprehensive.

It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term used in this specification " fixation ", " integrated molding ", For illustrative purposes only, the similar unit of structure is to identical label in the figure for "left", "right" and similar statement Mark.

Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model The normally understood meaning of the technical staff in art field is identical.Art used in the description of the utility model in this specification Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.

As shown in Figure 1, one embodiment of the utility model is:

Switch AN is attached by the other parts of conducting wire and circuit, and the other parts of circuit are installed on far from switch AN Place, when alarming in this way, even if switch AN and conducting wire connected to it are destroyed, at this point, triggered brilliant lock Pipe conducting, so the other parts that can not also influence circuit carry out normal alert operation.

Switch AN is mountable to the lower sections of valuables and is perhaps allowed at door and window closure in suffering oppression or squeeze and break The state opened, in this way, after the extruding force suffered by it disappears, as object location to be detected is changing the recovery of its state just It is often in closed state, triggers turn on thyristors, and then triggers alarm module and issues alarm sound；For example, being installed on expensive The lower section of heavy articles, after valuables are detached from original place, then switch AN state changes in normally off, then triggers Alarm；In sleeping at night, what door and window substantially closed off, then the switch AN that the junction of door and window and its frame is installed, will receive It squeezes and is in an off state, once stranger is by its noiseless opening, the state of switch AN will be made to change and located In normally off, to trigger alarm condition, achieve the purpose that burglar alarm.

The alarm module includes resistance R2-R3, triode VT1-VT2, buzzer BL and Integrated circuit IC.

The first end of the switch S respectively with the first end of the resistance R3, the 8th pin of the Integrated circuit IC, institute State the first end connection of resistance R1；The cathode of the battery E respectively with the second end of the loudspeaker BL, the thyristor SCR Cathode connection.

6th pin of the Integrated circuit IC is connect by the resistance R2 with the 7th pin；The of the Integrated circuit IC 3 pins are connect with the base stage of the triode VT1；The second end of the resistance R3 respectively with the collector of the triode VT1, The base stage of the triode VT2 connects；The first end of the resistance R3 is connect with the emitter of the triode VT2；Described three The collector of pole pipe VT2 is connect with the first end of the buzzer BL；The emitter of the triode VT1 and the buzzer BL Second end connection.

The model 3DG6 of the triode VT1；The model 3AX81 of the triode VT2.

The model KD-9561 of the Integrated circuit IC.

The voltage of the battery E is DC4.5V.

The model 3CT2K of the thyristor SCR.

Working principle of the utility model is:

SCR, R1 and AN form control machines switching circuit；IC1, R2, VT1, VT2 and BL composition simulation siren acoustic-electric Road.Usually, compressing of the AN by object to be monitored, make its two normally-closed contact disconnect, SCR Triggerless and block, alarm is not Work.When object to be monitored has been removed, two contact AN is closed automatically, and the triggering end of SCR obtains triggering letter from positive pole through R1 Number, SCR conducting, IC1 is powered on, and the siren acoustoelectric signal of output end output pushes loudspeaker through VT1, VT2 power amplification Issue loud and clear alarm.

At this point, can not also prevent alarm even if replacing or destroying AN for object to be monitored；It only finds and breaks The switch S for hiding and being installed on distant place is opened, alarm could be released.

It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed, It is accordingly to be regarded as the range of the utility model specification record；Also, it for those of ordinary skills, can be according to above stating It is bright to be improved or converted, and all these modifications and variations all should belong to the protection model of the appended claims for the utility model It encloses.

Claims

1. a kind of high reliability burglar alarm, which is characterized in that including battery E, switch S, resistance R1, thyristor SCR, at least One for triggering the normally closed switch AN and alarm module of alarm；The anode of the battery E connects with the second end of the switch S It connects；The first end of the switch S is connect with the first end of the resistance R1, the alarm module respectively；The cathode of the battery E It is connect respectively with the cathode of the thyristor SCR, the alarm module；The anode and the alarm module of the thyristor SCR Connection；At least one described switch AN is parallel between the control electrode of the thyristor SCR and the second end of the resistance R1.

2. a kind of high reliability burglar alarm according to claim 1, which is characterized in that the alarm module includes electricity Hinder R2-R3, triode VT1-VT2, buzzer BL and Integrated circuit IC.

3. a kind of high reliability burglar alarm according to claim 2, which is characterized in that the of the Integrated circuit IC 6 pins are connect by the resistance R2 with the 7th pin；3rd pin of the Integrated circuit IC and the base stage of the triode VT1 Connection；The second end of the resistance R3 is connect with the base stage of the collector of the triode VT1, the triode VT2 respectively；Institute The first end for stating resistance R3 is connect with the emitter of the triode VT2；The collector and the buzzer of the triode VT2 The first end of BL connects；The emitter of the triode VT1 is connect with the second end of the buzzer BL.

4. a kind of high reliability burglar alarm according to claim 2, which is characterized in that the type of the triode VT1 Number be 3DG6；The model 3AX81 of the triode VT2.

5. a kind of high reliability burglar alarm according to claim 3, which is characterized in that the type of the Integrated circuit IC Number be KD-9561.

6. a kind of high reliability burglar alarm according to claim 1-5, which is characterized in that the battery E Voltage be DC4.5V.

7. a kind of high reliability burglar alarm according to claim 6, which is characterized in that the type of the thyristor SCR Number be 3CT2K.