CN208433088U - A kind of fire-proof and theft-proof warning system - Google Patents

Abstract

The utility model discloses a kind of fire-proof and theft-proof warning systems, including single-chip microcontroller, power circuit, clock circuit, reset circuit, temperature sensing circuit, Smoke Detection circuit, human inductor module, sound and light alarm module, button inputting circuits；The power circuit, clock circuit, reset circuit, temperature sensing circuit, Smoke Detection circuit, human inductor module, sound and light alarm module, button inputting circuits are connect with single-chip microcontroller；The utility model reaction speed is fast, and stability is good, high-efficient, and circuit is realized simply, cheap, can flexibly adapt to demand different required for different occasions.

Description

A kind of fire-proof and theft-proof warning system

Technical field

The utility model relates to alarm system more particularly to a kind of fire-proof and theft-proof warning systems.

Background technique

Fire-proof and theft-proof problem is that we will notice that especially nowadays development in science and technology is rapid all the time, household electrical appliance Number of species sharply increase, natural gas liquefaction gas is widely used, although facilitate life consequent fire it is hidden Trouble is also increasing.Fire has become one of most destructive disaster in China at present.The alarm device of external developed country is general And rate is all up to 80%, the alarm device in China starts late to compare with developed country suffers from very big difference in all fields Away from.

Since many residential quarters are more old, other than fire easily occurs, the phenomenon that stealing of entering the room also frequently occurs, Although having there is many exquisite and highly sensitive infrared alarm devices at present.But price is usually quite valuableness, so at present The popularity rate of the infrared alarm device of household is very low.Traditional vibration alarm device is although cheap but since personnel walk about frequently It is numerous very easy to report by mistake.The utility model is simple to operation, and high efficiency smart is stablized, and cheap cost performance is high, can be simultaneously Take into account the warning system of two aspect of fire-proof and theft-proof.

Utility model content

The purpose of the utility model is to provide a kind of fire-proof and theft-proof warning systems that reflection speed is fast and stable.

Above-mentioned technical purpose has the technical scheme that

A kind of fire-proof and theft-proof warning system, including single-chip microcontroller, temperature sensing circuit, Smoke Detection circuit, human inductor Module, button inputting circuits；The temperature sensing circuit, Smoke Detection circuit, human inductor module, sound and light alarm module, Button inputting circuits are all connected to single-chip microcontroller, and temperature sensing circuit, Smoke Detection circuit and human inductor module will test Data transmission to single-chip microcontroller, the open and close of the single-chip microcontroller control sound and light alarm module.

Further, the temperature sensing circuit is temperature sensor, and the temperature sensor connect with single-chip microcontroller, can be with Detect ambient temperature.

Further, the Smoke Detection circuit includes smoke sensor device and A/D converter, and the smoke sensor device is logical A/D converter is crossed to connect with single-chip microcontroller.

Further, there are three keys for the button inputting circuits, for controlling the threshold value of temperature and smokescope.

Further, the human inductor module, using HC-SR501 infrared human body inductor, according to physical activity Situation generates human-induced signal, and transmits a signal to single-chip microcontroller.

Further, the fire-proof and theft-proof warning system further includes the LCD MODULE connecting with single-chip microcontroller, is used LCD1602 liquid crystal display, temperature and the Smoke Detection electricity that real-time display temperature sensing circuit measures under the control of single-chip microcontroller The smokescope that drive test obtains.

The utility model has the advantages that the utility model has reaction speed fast, stability is good, high-efficient, and circuit realizes that simply price is low Honest and clean feature.The utility model can free set temperature alert threshold and smokescope alert threshold, can flexibly adapt to not The different demand with required for occasion.

Detailed description of the invention

Fig. 1 is the structural block diagram of fire-proof and theft-proof system provided by the utility model；

Fig. 2 is the utility model temperature sensing circuit figure；

Fig. 3 is the utility model LCD MODULE circuit diagram；

Fig. 4 is the utility model Smoke Detection circuit diagram；

Fig. 5 is the utility model button inputting circuits figure；

Fig. 6 is the utility model system circuit complete schematic.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in Figure 1, button inputting circuits 1, Smoke Detection circuit 2, temperature sensing circuit 3, human inductor module 4, Sound and light alarm module 6, LCD MODULE 7 are connect with single-chip microcontroller 5.

As shown in Fig. 2, temperature sensing circuit uses DS18B20 digital temperature sensor, No. 1 pin of DS18B20 is connect Ground connects resistance R1 between No. 2 and No. 3 pins, one end ground connection that resistance R1 is connect with No. three pins.

As shown in figure 3, LCD MODULE uses LCD1602 display screen, No. 1 of display screen and No. 16 pins are grounded, No. 2 + 5V voltage is connected with No. 15 pins, No. 3 pins connect swept resistance R3, sliding variable resistance R3 other end ground connection.

As shown in figure 4, Smoke Detection circuit, 1,2,3 pins of smoke sensor device MQ2 are all connected with+5v, No. 6 pins and No. 4 Pin is all connected with resistance R2, and connect with No. 2 pins of AD converter, the other end ground connection of resistance R2, and the 5 of smoke detector No. 4 pins of number pin and AD converter are grounded, No. 8 pin connection+5V power supplys of AD converter.

As shown in figure 5, button inputting circuits, one end of switch S1, S2, S3 are grounded, for the first time can be to temperature by S1 Alert threshold is adjusted, and carries out up and down adjustment with S2 and S3, can adjust for the second time to smokescope alert threshold by S1 Section carries out up and down adjustment using S2 and S3, presses S1 for the third time, returns to deployment state.

As shown in fig. 6, being circuit system complete schematic, single-chip microcontroller uses 89C52 single-chip microcontroller, connects between 18,19 pins One end connection capacitor C2 that crystal oscillator a Y1, Y1 are connect with No. 18 pins is met, one end that Y1 is connect with No. 19 pins connects The other end ground connection for meeting capacitor C3, capacitor C2 and capacitor C3, forms crystal oscillating circuit；No. 2 pipes of DS18B20 temperature sensor Foot connects No. 17 pins of single-chip microcontroller；4,5,6 pins of liquid crystal display LCD1602 are separately connected 28,27,26 pipes of single-chip microcontroller Foot, 39,38,37,36,35,34,33, the 32 of 7,8,9,10,11,12,13,14, the 15 pins connection single-chip microcontroller of LCD1602 Pin；No. 3 pins of No. 1 pin connection single-chip microcontroller of the digital analog converter of ADC0832, No. 7 pins connect in Smoke Detection circuit Connect No. 1 pin of single-chip microcontroller, No. 6 No. 2 pins that single-chip microcontroller is connected with No. five pins, switch S1, S2, S3 in button inputting circuits Other end be separately connected 5,6,7 pins of single-chip microcontroller.

No. 14 pins of the one end input circuit resistance R6 connection single-chip microcontroller, the other end of resistance R6 in sound and light alarm module The base stage of PNP type triode Q1 is connected, the emitter of triode connects+5 power supplys, and collector is connecting photodiode D1 just Pole, the cathode of D1 connect resistance R7, and the other end and loudspeaker cathode of resistance R7 is grounded, and the anode of loudspeaker connects photosensitive two The anode of pole D1.Human inductor module uses HC-SR501 infrared human body induction module, No. 1 pin and electricity of HC-SR501 One end connection+5V power supply of R4 is hindered, the other end of resistance R4 connects No. 25 pipes of single-chip microcontroller with No. 3 pins of HC-SR501 Foot.No. 4 pins of HC-SR501 are grounded.

In foregoing circuit, the resistance value of resistance R1, R3, R4, R5 are 10K Ω, and the resistance value of R3 is 100 Ω, and the resistance value of R6, R7 are The capacitance of 1.5K Ω, capacitor C1 are 10 μ f, and the capacitance of capacitor C2, C3 are 30pf.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (6)

1. a kind of fire-proof and theft-proof warning system, which is characterized in that including single-chip microcontroller, temperature sensing circuit, Smoke Detection circuit, people Body sensor module, sound and light alarm module, button inputting circuits；The temperature sensing circuit, Smoke Detection circuit, human body sensing Device module, sound and light alarm module, button inputting circuits are all connected to single-chip microcontroller, temperature sensing circuit, Smoke Detection circuit and people The data transmission that body sensor module will test is to single-chip microcontroller, the unlatching of the single-chip microcontroller control sound and light alarm module and pass It closes.

2. a kind of fire-proof and theft-proof warning system according to claim 1, which is characterized in that the temperature sensing circuit uses Temperature sensor.

3. a kind of fire-proof and theft-proof warning system according to claim 1, which is characterized in that the Smoke Detection circuit includes Smoke sensor device and A/D converter, the smoke sensor device are connect by A/D converter with single-chip microcontroller.

4. a kind of fire-proof and theft-proof warning system according to claim 1, which is characterized in that the button inputting circuits have three A key, for controlling the threshold value of temperature and smokescope.

5. a kind of fire-proof and theft-proof warning system according to claim 1, which is characterized in that the human inductor module, Using HC-SR501 infrared human body inductor, human-induced signal is generated according to physical activity situation.

6. a kind of fire-proof and theft-proof warning system according to claim 1, which is characterized in that the fire-proof and theft-proof warning system Further include the LCD MODULE being connect with single-chip microcontroller, using LCD1602 liquid crystal display, is shown in real time under the control of single-chip microcontroller The smokescope that the temperature and Smoke Detection circuit that temperature displaying function detection circuit measures measure.