CN219370427U

CN219370427U - Multifunctional anti-theft alarm sensor

Info

Publication number: CN219370427U
Application number: CN202223342323.8U
Authority: CN
Inventors: 李立; 李元元; 刘凯
Original assignee: Jiaxing Juxinlong Technology Co ltd; Yangtze Delta Region Institute of Tsinghua University Zhejiang
Current assignee: Jiaxing Juxinlong Technology Co ltd; Yangtze Delta Region Institute of Tsinghua University Zhejiang
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-07-18
Anticipated expiration: 2032-12-12

Abstract

The utility model discloses a multifunctional anti-theft alarm sensor which comprises a vibration monitoring circuit, a temperature monitoring circuit, an inclination monitoring circuit, a judging circuit and an alarm circuit, wherein the vibration monitoring circuit comprises a piezoelectric sensor Y, an operational amplifier U1 and an operational amplifier U2, one end of the piezoelectric sensor Y is electrically connected with the negative input end of the operational amplifier U1 through a capacitor C1 and a resistor R2 in sequence, and the output end of the operational amplifier U1 is electrically connected with the positive input end of the operational amplifier U2 through a resistor R6. The utility model discloses a multifunctional anti-theft alarm sensor which monitors vibration, temperature and inclination of a safe through a dynamic monitoring circuit, a temperature monitoring circuit and an inclination monitoring circuit respectively, and when any condition is met, a judging circuit is judged to be directly conducted to an alarm circuit for alarming, and the multifunctional anti-theft alarm sensor has the advantages of various monitoring alarms, stable structure, high safety and the like.

Description

Multifunctional anti-theft alarm sensor

Technical Field

The utility model belongs to the technical field of anti-theft alarm, and particularly relates to a multifunctional anti-theft alarm sensor.

Background

With the improvement of living standard and income of people, more and more valuables are owned in home, people tend to use the safe to store valuables, and the safe can effectively prevent valuables from being stolen, but the current thieves have higher and higher skills in theft and higher requirements on the safe.

The prior theft means comprise prying, flame cutting, direct taking and the like, and most of the prior safes are only limited to firmly manufacturing the safes through mechanical means, and the forced prying and the like are easy, so that the thief needs to timely find and alarm when the thief steals the safes, and the loss is reduced to the greatest extent.

Accordingly, the above problems are further improved.

Disclosure of Invention

The utility model mainly aims to provide a multifunctional anti-theft alarm sensor which monitors vibration, temperature and inclination of a safe through a dynamic monitoring circuit, a temperature monitoring circuit and an inclination monitoring circuit respectively, and when any condition is met, the alarm circuit is directly conducted to alarm after judgment by a judging circuit, so that the multifunctional anti-theft alarm sensor has the advantages of various monitoring alarms, stable structure, high safety and the like.

In order to achieve the above object, the present utility model provides a multifunctional anti-theft alarm sensor for anti-theft alarm, comprising a vibration monitoring circuit, a temperature monitoring circuit, an inclination monitoring circuit, a judging circuit and an alarm circuit, wherein:

the vibration monitoring circuit comprises a piezoelectric sensor Y, an operational amplifier U1 (used for signal amplification) and an operational amplifier U2 (used for signal shaping), wherein one end of the piezoelectric sensor Y is electrically connected with the negative input end of the operational amplifier U1 through a capacitor C1 and a resistor R2 in sequence, and the output end of the operational amplifier U1 is electrically connected with the positive input end of the operational amplifier U2 through a resistor R6;

the temperature monitoring circuit comprises an operational amplifier U3, a temperature sensor RT and a rheostat R12, wherein one end of the temperature sensor RT is electrically connected with the negative electrode input end of the operational amplifier U3, and one end (and a sliding end) of the rheostat R12 is electrically connected with the positive electrode input end of the operational amplifier U3;

the tilt monitoring circuit comprises a mercury switch S1 and the judging circuit comprises an or gate U4 and an or gate U5, wherein the output end of the op-amp U2 is electrically connected with a first input end (3 pins) of the or gate U4, the output end of the op-amp U3 is electrically connected with a second input end (4 pins) of the or gate U4, one end of the mercury switch S1 is electrically connected with a third input end (5 pins) of the or gate U4, the or gate U4 is electrically connected with input ends (11 and 13 pins) of the or gate U5 sequentially through a diode D2 and a resistor R8, and the output end (10 pins) of the or gate U5 is electrically connected with a base electrode of a triode Q1 through a resistor R9;

the alarm circuit comprises a relay coil K1, a relay switch SK1 and a loudspeaker L, wherein a collector electrode of the triode Q1 is electrically connected with one end of the relay coil K1, and the other end (connected with a power supply end VCC) of the relay coil K1 sequentially passes through the loudspeaker L and the relay switch SK1 and is electrically connected with an emitter electrode of the triode Q1.

As a further preferable technical scheme of the above technical scheme, one path of the positive input end of the operational amplifier U1 is connected with the power supply end through a resistor R1, the other path of the positive input end of the operational amplifier U1 is electrically connected with the emitter of the triode Q1 through a diode D1, and the negative input end of the operational amplifier U2 is electrically connected with the output end of the operational amplifier U1 sequentially through a varistor R4 and a resistor R5.

As a further preferable technical solution of the above technical solution, the other end of the temperature sensor RT is connected to a power supply terminal through a resistor R10 and the positive input terminal of the op-amp U3 is also connected to the power supply terminal through a resistor R11.

As a further preferable embodiment of the above-described embodiment, a diode D3 is connected in parallel to both ends of the diode D2 and both ends of the relay coil K1 by a resistor R14.

As a further preferable embodiment of the foregoing embodiment, an end of the mercury switch S1 away from the or gate U4 is connected to a power supply end through a resistor R13.

Drawings

FIG. 1 is a schematic diagram of a multi-functional burglar alarm sensor of the present utility model.

Fig. 2 is a circuit diagram of a multifunctional burglar alarm sensor of the present utility model.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

The utility model discloses a multifunctional anti-theft alarm sensor, and the specific embodiment of the utility model is further described below with reference to the preferred embodiment.

In embodiments of the present utility model, those skilled in the art will note that safes, power terminals, etc., to which the present utility model relates may be considered prior art.

Preferred embodiments.

The utility model discloses a multifunctional anti-theft alarm sensor which is arranged in a safe and used for anti-theft alarm, and is characterized by comprising a vibration monitoring circuit, a temperature monitoring circuit, an inclination monitoring circuit, a judging circuit and an alarm circuit, wherein:

Specifically, one path of the positive input end of the operational amplifier U1 is connected to the power supply end through a resistor R1, the other path of the positive input end of the operational amplifier U1 is electrically connected to the emitter of the triode Q1 through a diode D1, and the negative input end of the operational amplifier U2 is electrically connected to the output end of the operational amplifier U1 through a varistor R4 and a resistor R5 in sequence.

More specifically, the other end of the temperature sensor RT is connected to a power supply terminal through a resistor R10 and the positive input terminal of the operational amplifier U3 is also connected to the power supply terminal through a resistor R11.

Further, a diode D3 is connected across the diode D2 and across the relay coil K1 by a resistor R14.

Further, the end of the mercury switch S1 away from the or gate U4 is connected to the power supply end through a resistor R13.

Preferably, the principle of the utility model is:

for the vibration monitoring circuit, the vibration monitoring circuit is used for preventing a thief from forcedly opening or breaking the safe by using a tool, when the piezoelectric sensor Y is vibrated, a signal is amplified by the operational amplifier U1 and shaped by the operational amplifier U2 and then is output to a first input end from a high level to the OR gate U4;

for the temperature monitoring circuit, the temperature monitoring circuit is used for preventing a thief from forcedly opening through the live wire cutting knife, when the temperature monitoring circuit is subjected to high temperature, the resistance of the temperature sensor RT is reduced, so that the operational amplifier U3 outputs a high level to the second input end of the OR gate U4;

for the tilt monitoring circuit, the mercury switch S1 is turned on when the tilt monitoring circuit is used for preventing a thief from directly moving the safe, so as to output a high level to the third input end of the or gate U4;

for the judging circuit, as long as any input end of the or gate U4 inputs a high level, the output end outputs the high level, and then the capacitor C3 (connected between the resistor R8 and the triode Q1) is charged through the diode D2, so that the output end of the or gate U5 outputs the high level, the triode Q1 is conducted, the relay coil K1 of the alarm circuit is electrified, the relay switch SK1 is closed, and the loudspeaker L is electrified to alarm.

It should be noted that technical features such as a safe and a power supply end related to the present application should be considered as the prior art, and specific structures, working principles, and control modes and spatial arrangement related to the technical features may be selected conventionally in the art, and should not be considered as the point of the present application, which is not further specifically described in detail.

Modifications of the embodiments described above, or equivalents of some of the features may be made by those skilled in the art, and any modifications, equivalents, improvements or etc. within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.

Claims

1. The utility model provides a multi-functional burglar alarm sensor for burglar alarm, its characterized in that includes vibration monitoring circuit, temperature monitoring circuit, slope monitoring circuit and judgement circuit and alarm circuit, wherein:

the vibration monitoring circuit comprises a piezoelectric sensor Y, an operational amplifier U1 and an operational amplifier U2, wherein one end of the piezoelectric sensor Y is electrically connected with the negative input end of the operational amplifier U1 through a capacitor C1 and a resistor R2 in sequence, and the output end of the operational amplifier U1 is electrically connected with the positive input end of the operational amplifier U2 through a resistor R6;

the temperature monitoring circuit comprises an operational amplifier U3, a temperature sensor RT and a rheostat R12, wherein one end of the temperature sensor RT is electrically connected with the negative electrode input end of the operational amplifier U3, and one end of the rheostat R12 is electrically connected with the positive electrode input end of the operational amplifier U3;

the tilt monitoring circuit comprises a mercury switch S1, the judging circuit comprises an or gate U4 and an or gate U5, the output end of the op-amp U2 is electrically connected with the first input end of the or gate U4, the output end of the op-amp U3 is electrically connected with the second input end of the or gate U4, one end of the mercury switch S1 is electrically connected with the third input end of the or gate U4, the or gate U4 is electrically connected with the input end of the or gate U5 through a diode D2 and a resistor R8 in sequence, and the output end of the or gate U5 is electrically connected with the base electrode of the triode Q1 through a resistor R9;

the alarm circuit comprises a relay coil K1, a relay switch SK1 and a loudspeaker L, wherein a collector electrode of the triode Q1 is electrically connected with one end of the relay coil K1, and the other end of the relay coil K1 sequentially passes through the loudspeaker L and the relay switch SK1 and is electrically connected with an emitter electrode of the triode Q1.

2. The multifunctional anti-theft alarm sensor according to claim 1, wherein one path of positive input end of the operational amplifier U1 is connected with a power supply end through a resistor R1, the other path of positive input end of the operational amplifier U1 is electrically connected with an emitter of the triode Q1 through a diode D1, and a negative input end of the operational amplifier U2 is electrically connected with an output end of the operational amplifier U1 through a rheostat R4 and a resistor R5 in sequence.

3. A multifunctional burglar alarm sensor according to claim 2, characterized in that the other end of the temperature sensor RT is connected to the power supply terminal via a resistor R10 and the positive input terminal of the op-amp U3 is also connected to the power supply terminal via a resistor R11.

4. A multifunctional burglar alarm sensor according to claim 3, characterized in that the diode D2 is connected across and by a resistor R14 and across the relay coil K1 to a diode D3.

5. The sensor of claim 4, wherein the end of the mercury switch S1 remote from the or gate U4 is connected to a power source through a resistor R13.