CN206907181U - Fire alarm installation based on tablet personal computer - Google Patents

Abstract

The utility model provides the fire alarm installation based on tablet personal computer, including push-button unit, display unit, alarm unit, GSM units, tablet personal computer, smog sensing unit, temperature collection circuit and single machine unit, push-button unit, display unit, alarm unit, GSM units, smog sensing unit and temperature collection circuit connect single machine unit respectively, tablet personal computer connects single machine unit by GSM units, smog sensing unit includes Smoke Sensor, signal amplification circuit and AD conversion unit, Smoke Sensor connects signal amplification circuit, signal amplification circuit connects AD conversion unit, the utility model is designed reasonably, it is easy to use, alarm is accurate, by tablet personal computer user can be made to understand the fire prevention situation of family in time, the property safety of family is set to obtain bigger guarantee.

Description

Fire alarm installation based on tablet personal computer

Technical field

The utility model is specifically related to the fire alarm installation based on tablet personal computer.

Background technology

The fire alarm system that present China accounts for most of share on the market is all the product that foreign corporation releases, no matter These manufacturers all possess extremely strong advantage in technology and fund, these advantages the manufacturer in China can undoubtedly be formed greatly roll from And hinder their development.As we know that domestic fire-proof and theft-proof alarming product or manufacturer's development are all extremely short Temporary, they are particularly after 2004 just gradually starting in 21st century, but compared with above famous foreign producer, they Still obvious gap be present in scope of the enterprise and scale of investment.In protection common people's property this field without prejudice, fire-proof and theft-proof report Alarm device is just play more and more important role.According to statistics, comparatively the fire protection alarm device use range in China is very Narrow, and for utilization rate is up to 80% developed country, there is very big drop.Because the fireproof alarming trade of China Just start soon, it is clear that less than foreign countries, resident will be caused low to the degree of recognition of house safety-protection system, popularity rate is naturally also not It can be improved.At present at home and abroad, the various burglar alarm systems of research and design out on the basis of shooting monitoring, infrared light etc. Had the characteristics that in system equipment Development：Passivating, unification, complication, diversification, manual, synthesization.And these are anti- The function of fiery anti-theft alarm system is gradually being lifted, and reliability is also gradually stepping up.

Utility model content

The purpose of this utility model is to solve above-mentioned deficiency, there is provided the fire alarm installation based on tablet personal computer.

The purpose of this utility model is achieved through the following technical solutions：

Fire alarm installation based on tablet personal computer, including it is push-button unit, display unit, alarm unit, GSM units, flat Plate computer, smog sensing unit, temperature collection circuit and single machine unit, push-button unit, display unit, alarm unit, GSM are mono- Member, smog sensing unit and temperature collection circuit connect single machine unit respectively, and tablet personal computer connects single-chip microcomputer by GSM units Unit, smog sensing unit include Smoke Sensor, signal amplification circuit and AD conversion unit, and Smoke Sensor connection signal is put Big circuit, signal amplification circuit connection AD conversion unit.

Single machine unit uses STC89C52 single chip chip.

Smoke Sensor uses MQ-2 sensors.

Temperature collection circuit uses DS18B20 digital temperature sensors.

The utility model has following beneficial effect：

The utility model is designed reasonably, easy to use, alarm is accurate, user can be made to understand house in time by tablet personal computer In fire prevention situation, the property safety of family is obtained bigger guarantee.

Brief description of the drawings

Fig. 1 is overall structure diagram of the present utility model；

Fig. 2 is single machine unit circuit diagram of the present utility model；

Fig. 3 is display unit circuit figure of the present utility model；

Fig. 4 is smog sensor circuit of the present utility model；

Fig. 5 is AD conversion element circuit of the present utility model；

Fig. 6 is smog sensing unit of the present utility model；

Fig. 7 is temperature collection circuit of the present utility model；

Fig. 8 is GSM units of the present utility model；

Fig. 9 is push-button unit of the present utility model；

Figure 10 is alarm unit of the present utility model.

Embodiment

The utility model is further described below in conjunction with the accompanying drawings：

As shown in figure 1, the fire alarm installation based on tablet personal computer, including push-button unit 1, display unit 2, alarm unit 3rd, GSM units 4, tablet personal computer 5, smog sensing unit 6, temperature collection circuit 7 and single machine unit 8, push-button unit 1, display Unit 2, alarm unit 3, GSM units 4, smog sensing unit 6 and temperature collection circuit 7 connect single machine unit 8, flat board respectively Computer 5 connects single machine unit 8 by GSM units 4, and smog sensing unit 6 includes Smoke Sensor 9, signal amplification circuit 10 With AD conversion unit 11, Smoke Sensor 9 connects signal amplification circuit 10, and signal amplification circuit 10 connects AD conversion unit 11.

Single machine unit uses STC89C52 single chip chip.

Smoke Sensor uses MQ-2 sensors.

Temperature collection circuit uses DS18B20 digital temperature sensors.

Smoke Sensor MQ-2 detects indoor imflammable gas concentration, and Indoor Air temperature value can detect with DS18B20. GSM units are to ensure the pith that whole system can be monitored by user's remote operation.Matrix keyboard can be to whole system Preference setting and debugging are carried out, two cell-phone numbers can be set to monitor whole warning system simultaneously, liquid crystal uses 1602 liquid crystal, had Relatively good man-machine interaction experience.

As shown in Fig. 2 STC89C52 normal operating voltage section is direct current 4V-5.5V.Due to needing to grow indoors Phase powers, then stable+5V power supplys should be used to power.40 pin VCC connect 5V, 20 pin GND ground connection.

As shown in figure 3, the 1st pin GND is ground power supply, ground connection；2nd pin VCC connects 5V positive supplies；15th, 16 pin are backlight；D0~ D7 is 8 bidirectional data lines, connects P0 mouths；3rd pin：Pin is biased, the contrast of liquid crystal is adjusted by 2K Ω potentiometer；4th Pin RS registers, high/low level difference corresponding data register and command register, are controlled by P2.7；5th pin RW is controlled for read-write Signal wire processed, high/low voltage represent read operation/write operation, controlled by P2.6 respectively；6th pin E is Enable Pin, and high level is read Information, execute instruction when trailing edge triggers, controlled by the P2.5 mouths of single-chip microcomputer.

As shown in figure 4, MQ-2 Smoke Sensors have 6 pins, wherein middle two are resistance wire, to different type, no Gas with concentration has different resistance values, and the conversion of magnitude of voltage can be converted into according to the conversion of resistance value.1,2, the 3 of MQ-2 Pin connect VCC power supply, No. 5 pins connect pull down resistor R5 arrive again (as protect sensor use), have two after 4,6 pin parallel connections Outlet, first, pull down resistor is connect to ground, second, being connected to AD conversion unit as analog signal output.

As shown in figure 5, the connection of ADC0832 and single-chip microcomputer must be 4 lines, i.e. CS chip select lines, CLK clock lines, DI numbers According to line, DO data wires.Due to DI and DO asynchronous transfer of data, therefore identical line can be connected in display in operation On, wherein DI and DO are data entry mode.

As shown in fig. 6, Smoke Detection module is made up of Smoke Detection sensor and Simulation scale-up circuit.What MQ-2 was detected The scope of the analog level of chip is between 0-5V, and it ensures that the temperature of sensor is maintained at certain limit, and output voltage U0 is The voltage at R3 both ends, smoke signal is converted into the electric signal of simulation, when MQ-2 detects smog, R3 both end voltages size with Smokescope is linear within the specific limits.MQ-2 needs direct voltage drive when working, and VCC is its operating voltage, leads to The same power supplys of normal VCC and U1.To make MQ-2 sensor output voltages suitable, R3 resistances need to select suitable, usual typical case Value is 1k Ω.MQ-2 output for analog quantity, it is necessary to which single-chip microcomputer could be handled after A/D is converted into digital quantity, analog-to-digital conversion often uses core Piece ADC0832, the output end UO of Smoke Sensor detection are connected to ADC0832 CH0 passages, analog quantity are converted into data signal Input single-chip microcomputer is handled.

As shown in fig. 7, using the temperature of 4 temperature sensor measurements not chummery, respectively with P3.3, the P3.4 of system, P3.5, P3.7 mouth are connected.Each I/O mouths concatenate a DS18B20, are the sequence numbers that need not carry out each device inside system Search, the operation of matching, can skip the operation of ROM sequence numbers match, i.e., all using ROM orders are skipped Identical port output timing can be used during the ROM operations of DS18B20 devices.4 data that port is once read back are not one Individual independent data, it is the combination of 4 DS18B20 a data, realizes the monitoring temperature of different location.Finally by the number of collection According to being handled, take out temperature maximum and shown on liquid crystal 1602, the decision content of temperature when occurring as fire.

As shown in figure 8,1~5 pin is power level input, 6~10 pin are for power supply；11st, 12 pin can connect lithium battery, be Charging pins；13 pin can external circuit output voltage；14 pin are the thermistor for connecing negative temperature coefficient, are protected for lithium cell charging Shield；24~29 pins are SIM card pin, and CCRST, CCIO, CCCL, CCVCC, CCGND in SIM card pass through SIM card reader It is joined directly together with TC35 Same Name of Ends, the CCIN pin of zero resistance socket can detect Mobile phone card either with or without being plugged, if docking is errorless Then the pin draws high voltage, is otherwise low level；33~40 pin are speech interface, can receiver；15th, 30,31 and 32 pin are control Part processed.15 pin are ignition lead IGT, and module wants normally-open, it is necessary to provide the low-voltage not less than 100ms, module after upper electricity It can just open；30 pin are RTC, and 31 pin are PD；32 pin SYNC have two kinds of working methods, and the present apparatus is only it may be noted that it runs shape Condition, TC35 are in LED when sleeping or closing situation and extinguished；When LED flashes for interval 600ms, illustrate that TC35 logs in net Network or mobile phone are not plugged；When LED is to go out the 75ms bright 3s seconds, then TC35 has been successfully entered network and has been placed in wait operating mode.35 ~38 be speech interface, and 35,36 connect loudspeaker playback.37 be microphone anode, and 38 be its negative terminal, typically connects Electret condenser microphone collection Its sound.18 pin, 19 pin TXD are serial port, can be with PC or single chip communication.

As shown in figure 9, on 4 × 4 matrix keyboards, all by key connection is all I/O port, without earth terminal.So need Program set-point judges.High four of P1 mouths are 0x0f, if button-free is pressed, alignment and line are unconnected.If have Key is pressed, then the voltage of alignment can be pulled to low level by line, by judging that P1.0~P1.3 value can be with by program Judge which key is pressed, obtain corresponding encoded.

As shown in Figure 10, when system detectio to it is abnormal when this circuit will send alarm.Used is passive buzzer, It produces the sound in high voltage.When system is in deployable model, whole system is in detection state, and inner temperature of room is more than default During value, when also or smokescope value is higher than predetermined value, the P3.2 mouths of single-chip microcomputer will all be set to high level, and triode Q1 is led It is logical, buzzer warning, at the same time, there is light emitting diode D1 to follow flicker, until user cancels alarm, and when cancelling alarm, two Pole pipe is no longer flashed, and buzzer is no longer alarmed.

Claims (4)

1. the fire alarm installation based on tablet personal computer, including push-button unit, display unit, alarm unit, GSM units, flat board Computer, smog sensing unit, temperature collection circuit and single machine unit, it is characterised in that：Push-button unit, display unit, alarm Unit, GSM units, smog sensing unit and temperature collection circuit connect single machine unit respectively, and tablet personal computer passes through GSM units Single machine unit is connected, smog sensing unit includes Smoke Sensor, signal amplification circuit and AD conversion unit, Smoke Sensor Connect signal amplification circuit, signal amplification circuit connection AD conversion unit.

2. the fire alarm installation according to claim 1 based on tablet personal computer, it is characterised in that：Described single-chip microcomputer list Member uses STC89C52 single chip chip.

3. the fire alarm installation according to claim 1 based on tablet personal computer, it is characterised in that：Described smog sensing Device uses MQ-2 sensors.

4. the fire alarm installation according to claim 1 based on tablet personal computer, it is characterised in that：Described temperature acquisition Circuit uses DS18B20 digital temperature sensors.