CN205608945U - Intelligence fire alarm system - Google Patents

Abstract

The utility model provides an intelligence fire alarm system. The utility model discloses an intelligence fire alarm system includes single -chip microcomputer control system, AD conversion module, smog collection module, temperature collection module, water spray motor module, LCD liquid crystal display module, GSM module, bee calling organ alarm module, matrix keyboard module and power module. The utility model has the advantages that smog concentration, ambient temperature in can the automated inspection environment to have acousto -optic warning, short message prompting and the water spray function of putting out a fire, the user can be according to the actual conditions oneself settlement warning upper limit simultaneously, and then makes the user can in time master the safe situation of environment through the long -range early warning method of short information of cell phone. Systematic simple structure, stable performance, convenient to use, low price, greatly reduced the possibility that takes place of serious conflagration.

Description

Intelligent fire alarm system

Technical field

This utility model relates to Environmental security disaster alarm field, be specifically related to a kind of application gsm communication, Sensor and the Intelligent fire alarm system of single-chip microcomputer.

Background technology

The Ministry of Public Security of the People's Republic of China, MOPS's offer data: the annual breaking out of fire 13.3 ten thousand in the whole nation in 2008, Dead 1385 people, direct property loss 1,500,000,000 yuan, lie dormant in our daily life fire the most everywhere Hidden danger, therefore carry out fire and alarm carry out corresponding counter-measure, just can reduce personal and property Loss.At present, Intelligent fire alarm system the most traditional simple alarm equipment, but incorporate Be integrated with each domain knowledges such as computer technology, electronic technology, automatic control technology, sensor application, Believing the continuous progress along with science and technology, intelligentized fire alarm system will be sent out faster Exhibition.

Monolithic body has long-pending little, light weight, a low price, low in energy consumption, extend flexible and easy to use Advantage, it is widely used in instrument and meter, can be realized multiple by integrated various types of sensors Measure the information conversion of physical quantity and control, being to realize the part that automatization is indispensable.

Gsm module is the terminal unit of GSM mobile handset another very important gsm mobile communication system outer of continuing. It is a kind of data terminal equipment that traditional modem combines with gsm wireless mobile communication system, because of This is also referred to as radio modem.Its appearance is filled with new vitality to the development of GSM, changes biography The means of communication based on speech of system, opens the gate of GSM network data communication and application thereof.Typically For, the local great majority of every use modem can replace with gsm module.Due to GSM Module is not by region, and the impact of circuit, so based on this module, using GSM network as being wirelessly transferred net Network, can develop the types of applications that multiple prospect is extremely optimistic.The GSM that the present utility model uses is short Telecommunication function, can make some control reach " zero distance ", due to the low cost of short message, the most permissible Direct substitution traditional wireless remote remote measurement, has broad application prospects.

Summary of the invention

For improving the safety of remote fire early warning and effectiveness, this utility model provide a kind of intelligence, simple, Intelligent fire alarm system easily.

This utility model is achieved through the following technical solutions: the feature bag of a kind of Intelligent fire alarm system Include: its composition includes single-chip computer control system, AD conversion module, smoke collection module, temperature acquisition mould Block, water spray motor module, LCD LCD MODULE, gsm module, buzzer warning module, matrix Keysheet module and power module.

1) described single-chip computer control system includes: the VCC of single-chip microcomputer STC89C52 pin 40 is just connecting Pole 5V, and the VSS of pin 20 connects power supply ground end.

2) described AD conversion module includes: chip ADC0832 connects single-chip microcomputer by pin 5,6 P2.2 port carries out reception and the transmission of data；Its pin 1 connects the P2.4 port of single-chip microcomputer, carries out sheet choosing, A/D module is opened during low level；Its pin 7 connects the P2.3 port of single-chip microcomputer；Pin 4 is directly grounded；Draw Foot 8 is directly connected to power module.

3) described smoke collection module includes: MQ-2 Smoke Sensor is given AD by pin 4,6 and turned The pin 2 of die change block ADC0832 is AD converted, and its pin 1,3 is directly connected to power supply, pin 5 Pass through resistance eutral grounding.

4) described temperature collect module includes: the pin 1 of chip DS18B20 is directly grounded, and pin 3 is straight Connecing power supply in succession, pin 2 connects the P2.3 port of a pull-up resistor and single-chip microcomputer STC89C52 and completes Pull-up to bus.

5) described water spray motor module includes: water spray motor base stage one 2K of series winding by an audion Resistance be connected to the P3.7 port of single-chip microcomputer.

6) described LCD LCD MODULE includes: the pin 1 of chip LCD1602 is directly grounded, and draws Foot 2 is directly connected to power supply, and pin 3 connects ground connection after a resistance, and pin 4,5,6 connects single-chip microcomputer respectively P2.7, P2.6, P2.5 port, pin 7 to pin 14 is sequentially connected with P0.0 to the P0.7 end of single-chip microcomputer Mouthful, pin 15 is directly connected to power supply, and pin 16 is directly grounded.

7) described gsm module includes: chip TC35 respectively with P3.0 port and the P3.1 end of single-chip microcomputer Mouth connects.

8) described buzzer warning module includes: by transistor base one resistance of series winding and single-chip microcomputer P3.2 port connects.

9) described matrix keyboard module includes: be made up of 16 buttons, wherein 4 walks crosswise and connects single-chip microcomputer respectively P14, P15, P16, P17 port, 4 erect row meets P10, P11, P12, P13 of single-chip microcomputer respectively Port.

10) described power module includes: output 5V DC voltage is powered to whole system.

The beneficial effects of the utility model are:

1. a kind of Intelligent fire alarm system described in, uses gsm communication module to be connected with single-chip microcomputer, it is achieved from Dynamic transmission SMS notification user, intelligence degree is high, it is not necessary to manual control.

2. described in, a kind of Intelligent fire alarm system, uses sub-module method for designing, and whole device is readily disassembled And assembling.

3. described in, a kind of Intelligent fire alarm system, uses sensor Real-time Collection field data and teledata The mode of transmission ensures the safety produced with living environment, it is to avoid fire and explosion accident and carbon monoxide poisoning are existing The generation of elephant, fire prevention, explosion-proof and safety in production in there is the wide market space and development prospect.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of Intelligent fire alarm system

Fig. 2 is system integrated circuit schematic diagram

Fig. 3 is single-chip minimum system schematic diagram

Fig. 4 is Smoke Sensor schematic diagram

Fig. 5 is AD conversion schematic diagram

Fig. 6 is temperature sensor schematic diagram

Fig. 7 is LCD displaying principle figure

Fig. 8 is buzzer alarm circuit schematic diagram

Fig. 9 is water spray motor circuit schematic diagram

Figure 10 is that gsm module communicates to connect schematic diagram with single-chip microcomputer 232

Figure 11 is matrix keyboard schematic diagram

Figure 12 is power interface circuit schematic diagram

Detailed description of the invention

Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described further.

As depicted in figs. 1 and 2, circuit described in the utility model includes: single-chip minimum system is as whole The CPU module of system, ADC0832 modular converter, MQ-2 Smoke Sensor acquisition module, DS18B20 Temperature collect module, water spray motor module, LCD1602 LCD MODULE, gsm module, buzzer Alarm module, matrix keyboard module and power interface circuit.Obtained in real time by MQ-2 Smoke Sensor Combustable gas concentration, DS18B20 temperature sensor obtain scene of fire temperature, and by LCD1602 chip Liquid crystal display data, then can complete sound and light alarm when concentration or temperature exceed limit value, GSM message carries Wake up and sprinkling fire function, it is simple to people grasp the safe condition of environment in time, improve safety coefficient.

As it is shown on figure 3, the single-chip minimum system of mainboard includes single-chip microcomputer, reset circuit and clock circuit structure Become.In single-chip minimum system, single-chip microcomputer is STC89C52.The operating voltage range of STC89C52 single-chip microcomputer For 4V-5.5V, give single-chip microcomputer external world 5V DC source so usual.Connected mode is 40 in single-chip microcomputer Foot VCC meets positive pole 5V, and 20 foot VSS hold with connecing power supply.XTAL1 and XTAL2 is respectively and reversely amplifies The input of device and output, 18 feet, 19 feet are connected to oscillating circuit, and wherein crystal oscillator frequency is 11.0592MHz. When adding DC source needed for work to single-chip microcomputer, agitator begins to vibration.The mesh of oscillating circuit Be for single-chip microcomputer work provide needed for clock pulse signal.Wherein 18 feet and 19 feet connect the most over the ground The electric capacity of one 10 μ F, it is therefore an objective to prevent single-chip microcomputer self-excitation.The most external at 9 feet i.e. RST end One reset circuit, it is therefore an objective to making single-chip microcomputer power on when starting working, internal circuit starts work from original state Make.Native system uses external hand key reset circuit, needs to connect pull-up resistor and improves output height The value of level.

As shown in Figure 4, MQ-2 Smoke Sensor is the metal-oxide two relatively low with electrical conductivity in clean air Stannum oxide is the N-type semiconductor gas sensor of main body.When there is aerosol gases in sensor local environment, The electrical conductivity of sensor increases with the increase of aerosol gases concentration in air.As long as making when designing alarm The change of electrical conductivity can be converted to the output signal corresponding with this gas concentration with simple circuit.This The smokescope value of the MQ-2 Smoke Sensor collection site of module is through giving ADC0832 by 4,6 pins 2 pins be AD converted and obtain corresponding magnitude of voltage, 1,3 feet are directly connected to power supply, and pin 5 leads to Cross resistance eutral grounding.

As it is shown in figure 5, ADC0832 is 8 bit resolution A/D conversion chips, its best result is distinguished up to 256 Level, is adapted to general analog quantity conversion requirements.The input of its internal electric source and the multiplexing of reference voltage, make The analog voltage obtaining chip inputs between 0-5V.The chip conversion time is only 32 μ s, according to there being Double Data defeated Going out can be as data check, and to reduce error in data, conversion speed is fast and stability is strong.Independent chip Enable input, make the mounting of many devices convenient with what processor control became.By DI data input pin, The selection of channel function can be realized easily.ADC0832 should be 4 with the interface of single-chip microcomputer under normal circumstances Data line, is CS, CLK, DO, DI respectively.But due to DO end and DI end when communicating not simultaneously Effectively and be two-way with the interface of single-chip microcomputer, so DO and DI can be connected in parallel on one during circuit design Use on data wire.ADC0832 module is connected the P2.2 port of single-chip microcomputer by native system by 5,6 pins Carry out reception and the transmission of data；Its pin 1 connects the P2.4 port of single-chip microcomputer, carries out sheet choosing, low level Shi Kaitong A/D module；Its pin 7 connects the P2.3 port of single-chip microcomputer；Pin 4 is directly grounded；Pin 8 is straight Connect power supply in succession.

As shown in Figure 6, the digital temperature output of DS18B20 temperature sensor is total by " 1-Wire " (1-Wire is the digital signal bus agreement of a kind of uniqueness to line, and unique power line and holding wire are combined by it Together, a Tiaokou line is only used；Each chip unique encodings, supports networking addressing, zero-power wait etc., It is the minimum a kind of bus of necessary hardware line) mode of this uniqueness, multiple DS18B20 can be made convenient Set up into sensor network, foundation and combination for whole measurement system provide bigger probability.This is In system, the pin 1 of DS18B20 chip is directly grounded, and pin 3 is directly connected to power supply, and 2 pins connect on one The P2.3 port of pull-up resistor and single-chip microcomputer STC89C52 completes the pull-up to bus.

As it is shown in fig. 7, Intelligent fire alarm system is started by the higher limit of design temperature respectively and smog Alarm device, i.e. needs display module can show current temperature value and smog value in real time.LCD1602 is The content referring to display is 16X2, i.e. can show two row, often 16 character liquid crystal modules of row (display character and Numeral) just meet the needs designed.Therefore in native system, display module uses LCD1602 liquid crystal display mode Block.The pin 1 of LCD1602 chip of LCD is directly grounded；Pin 2 is directly connected to power supply；Pin 3 It is that gray scale regulates pin, is about 0.5-1V when gray scale is normal, therefore needs to connect a resistance eutral grounding, obtain Required voltage；Pin 4,5,6 connects P2.7, P2.6, P2.5 port of single-chip microcomputer respectively；Pin 7-draws Foot 14 connects the P0.0-P0.7 port of single-chip microcomputer successively；Pin 15 directly connects power supply；Pin 16 directly connects Ground.

As shown in Figure 8, buzzer alarm circuit is by transistor base one resistance of series winding and single-chip microcomputer P3.2 Port connects, and controls whether buzzer reports to the police by single-chip microcomputer to P3.2 low and high level.

As it is shown in figure 9, water spray motor circuit is connect by the resistance of base stage one 2K of series winding of an audion To the P3.7 port of single-chip microcomputer, by P3.7 port low and high level control to spray water motor unlatching with stop Only.

As shown in Figure 10, native system uses the gsm module TC35 of new generation of the up-to-date release of Siemens Module, uses 232 level communications, can use the DB9COM head on single-chip microcomputer plate and the DB9 COM in module Head intersection is connected to GND GND mode.Gsm module respectively with P3.0 port and the P3.1 port of single-chip microcomputer It is connected, it is achieved the reception of data and transmission.The baseband processor of TC35 module is integrated with one and ISO The SIM interface that 7816-3 IC Card standard is compatible.In order to be suitable for the SIM interface of outside, this interface connects To main interface ((ZIF connector).TC35 has reserved 6 pins for SIM interface on ZIF connector, The CCIN pin added is for detecting in SIM support whether be inserted with SIM.When inserting SIM, This pin is set to high level, and system is allowed for access normal operating conditions.But mobile operator is provided at present SIM all without CCIN pin, so design circuit time pin CCIN with CCVCC is connected.

As shown in figure 11, matrix keyboard is made up of 16 buttons, 4 walk crosswise connect respectively single-chip microcomputer P14, P15, P16, P17 port, 4 erect row connects P10, P11, P12, P13 port of single-chip microcomputer respectively.Wherein S2 is manual alarm key；S4 is for cancelling alarm keys；S5 is for arranging key；S9 is plus key；S13 is for subtracting key S17 For exiting, key is set.Under GSM arranges the interface of phone number: S2, S3, S4, S6, S7, S8, S10, S11, S12 and S15 the most corresponding numeral 1-9 and 0；S16 is for deleting number button.

As shown in figure 12, the major function of power interface circuit is that output 5V DC voltage supplies to whole system Electricity, wherein P1 is power interface.

Above-described is only preferred implementation of the present utility model, and this utility model is not limited to above enforcement Example.It is appreciated that those skilled in the art are direct on the premise of without departing from basic conception of the present utility model The oher improvements and changes derived or associate, are all considered as being included in protection domain of the present utility model.

Claims (1)

1. an Intelligent fire alarm system, its feature includes: its composition includes single-chip computer control system, AD conversion module, smoke collection module, temperature collect module, water spray motor module, LCD LCD MODULE, gsm module, buzzer warning module, matrix keyboard module and power module；

1) described single-chip computer control system includes: the VCC of single-chip microcomputer STC89C52 pin 40 connects positive pole 5V, and the VSS of pin 20 connects power supply ground end；

2) described AD conversion module includes: chip ADC0832 carries out reception and the transmission of data by the P2.2 port of pin 5,6 connection single-chip microcomputer, pin 1 connects the P2.4 port of single-chip microcomputer, carry out sheet choosing, A/D module is opened during low level, pin 7 connects the P2.3 port of single-chip microcomputer, pin 4 is directly grounded, and pin 8 is directly connected to power module；

3) described smoke collection module includes: the pin 2 that MQ-2 Smoke Sensor gives AD conversion module ADC0832 by pin 4,6 is AD converted, and pin 1,3 is directly connected to power supply, and pin 5 passes through resistance eutral grounding；

4) described temperature collect module includes: the pin 1 of chip DS18B20 is directly grounded, and pin 3 is directly connected to power supply, and pin 2 connects the P2.3 port of a pull-up resistor and single-chip microcomputer STC89C52 and completes the pull-up to bus；

5) described water spray motor module includes: water spray motor is connected to the P3.7 port of single-chip microcomputer by the resistance of base stage one 2K of series winding of an audion；

6) described LCD LCD MODULE includes: the pin 1 of chip LCD1602 is directly grounded, pin 2 is directly connected to power supply, pin 3 connects ground connection after a resistance, pin 4,5,6 connects P2.7, P2.6, P2.5 port of single-chip microcomputer respectively, pin 7 is sequentially connected with P0.0 to the P0.7 port of single-chip microcomputer to pin 14, pin 15 is directly connected to power supply, and pin 16 is directly grounded；

7) described gsm module includes: chip TC35 is connected with P3.0 port and the P3.1 port of single-chip microcomputer respectively；

8) described buzzer warning module includes: be connected with the P3.2 port of single-chip microcomputer by transistor base one resistance of series winding；

9) described matrix keyboard module includes: be made up of 16 buttons, wherein 4 walks crosswise P14, P15, P16, P17 port connecing single-chip microcomputer respectively, and 4 erect row connects P10, P11, P12, P13 port of single-chip microcomputer respectively；

10) described power module includes: output 5V DC voltage is powered to whole system.