CN202871006U

CN202871006U - Anti-theft monitoring module

Info

Publication number: CN202871006U
Application number: CN 201220532886
Authority: CN
Inventors: 何天生
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-15
Filing date: 2012-10-15
Publication date: 2013-04-10
Anticipated expiration: 2022-10-15

Abstract

The utility model relates to an anti-theft monitoring module comprising an infrared ray detection sensor, a voltage signal comparison circuit, a wireless radio frequency emission circuit and an alarm circuit, wherein output signals of the infrared ray detection sensor are transmitted to the voltage signal comparison circuit through a signal amplification circuit, and output signals of the voltage signal comparison circuit are controlled and sent to the wireless radio frequency emission circuit and the alarm circuit. When a person enters a detection scope of a detector, the anti-theft monitoring module alarms, and sends alarm information to a wireless receiver module in a duty room through a wireless emission module, thereby achieving purposes of combination of on-site alarm and wireless alarm, and thus being anti-theft.

Description

A kind of anti-theft monitoring module

Technical field

The utility model relates to a kind of monitoring modular, particularly be a kind of anti-theft monitoring module.

Background technology

Modern society, security precautions technology is more and more important, particularly the working clan in the city, all in company's working, only have just go home evening, like this one day daytime, thief's burglary of just may taking advantage of the occasion daytime, although the guard is arranged in the residential quarter, can only accomplish that also the people of the suspicion that prevents passes in and out the residential quarter, along with intelligentized progressively ripe, burglar alarm on the market is more and more, it mainly adopts wired alarming or dialing alarm mode, in case circuit is destroyed, then alerting signal will disappear.

The utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of anti-theft monitoring module is provided.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of anti-theft monitoring module, comprise infra-red detection sensor, voltage signal comparator circuit, less radio-frequency radiating circuit and warning circuit, the output signal of described infra-red detection sensor transfers to the voltage signal comparator circuit through signal amplification circuit, and the output signal control of described voltage signal comparator circuit is sent to less radio-frequency radiating circuit and warning circuit.

Preferably, described signal amplification circuit is made of transistor VT1 and the LM358 operational amplifier IC2 that pyroscan IC1 output terminal connects successively.

Preferably, described voltage signal comparator circuit is made of the first voltage comparator ic 3, second voltage comparer IC4 and the peripheral resistive element that connects thereof.

Preferably, described less radio-frequency radiating circuit adopts FDD-5 transmitter module IC5.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: when the people enters into the investigative range of detector, the utility model will send warning, send warning message by wireless transmitter module to the duty room wireless receiving module simultaneously, reach onsite alarming and combine with radio alarming, realize antitheft purpose.

Description of drawings

Fig. 1 is frame assumption diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

As shown in Figure 1 and Figure 2, a kind of anti-theft monitoring module of the present utility model, comprise infra-red detection sensor 1, voltage signal comparator circuit 2, less radio-frequency radiating circuit 21 and warning circuit 22, the output signal of described infra-red detection sensor 1 transfers to voltage signal comparator circuit 2 through signal amplification circuit 11, and the output signal control of described voltage signal comparator circuit 2 is sent to less radio-frequency radiating circuit 21 and warning circuit 22.

Described signal amplification circuit 11 is made of transistor VT1 and the LM358 operational amplifier IC2 that pyroscan IC1 output terminal connects successively, when nobody through out-of-date, pyroscan IC1 produces without the waveform signal.When having the people to enter the investigative range of warning device, pyroscan IC1 can send the feeble signal that wavelength is 9～10 μ m, output terminal at pyroscan IC1, accessed capacitor C 1, resistance R 1 and transistor VT1 etc. have formed the amplifying circuit of the first order, when infrared ray detector IC1 has signal output, at first pass through capacitor C 1 with the noise signal filtering, then enter transistor VT1, make its conducting, faint signal is obtained the amplification of the first order, LM358 operational amplifier IC2 has formed negative feedback amplifier circuit with the resistance of periphery, the signal that pyroscan IC1 is received further amplifies, and obtains a stronger polarity and is negative signal.

Described voltage signal comparator circuit 2 is made of the first voltage comparator ic 3, second voltage comparer IC4 and the peripheral resistive element that connects thereof, inverting input at the first voltage comparator ic 3 has accessed the detectable signal of front through amplifying, pin at in-phase input end has accessed reference voltage, and this reference voltage is realized by resistance R 8, R9 and potentiometer RP.Can change by the numerical value that changes potentiometer RP the reference voltage of chip, because the amplifying circuit of front has been amplified to detectable signal enough large, the reference voltage that can be higher than chip at the voltage of inverting input in the output terminal output low level, sends to second voltage comparer IC4.Simultaneously, power unit charges to capacitor C 6 by resistance R 11, the reference voltage of second voltage comparer IC4 is provided by resistance R 12 and R13, when the level of input end is lower than reference level, the 1st pin output high level of second voltage comparer IC4, make triode VT2 conducting, rear class hummer Y, acoustic alarm gives the alarm.Because the 1st pin of second voltage comparer IC4 output high level, another road output is through resistance R 16 current limlitings, diode VD3 isolation output makes triode VT3 conducting, be input to the 2nd pin of FDD-5 transmitter module IC5, and deliver to the 3rd pin of FDD-5 transmitter module IC5, be modulation signal input end CP, the high-frequency signal of emission is modulated, antenna is namely externally launched modulated frequency electromagnetic waves.

Above-described only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. anti-theft monitoring module, it is characterized in that: comprise infra-red detection sensor (1), voltage signal comparator circuit (2), less radio-frequency radiating circuit (21) and warning circuit (22), the output signal of described infra-red detection sensor (1) transfers to voltage signal comparator circuit (2) through signal amplification circuit (11), and the output signal control of described voltage signal comparator circuit (2) is sent to less radio-frequency radiating circuit (21) and warning circuit (22).

2. anti-theft monitoring module according to claim 1, it is characterized in that: described signal amplification circuit (11) is made of transistor VT1 and the LM358 operational amplifier IC2 that pyroscan IC1 output terminal connects successively.

3. anti-theft monitoring module according to claim 1 and 2 is characterized in that: described voltage signal comparator circuit (2) is made of the first voltage comparator ic 3, second voltage comparer IC4 and the peripheral resistive element that connects thereof.

4. anti-theft monitoring module according to claim 1 is characterized in that: described less radio-frequency radiating circuit (21) employing FDD-5 transmitter module IC5.