By,

Suhas, Rajeev

Vinay, Swaroop

Agenda of Today’s seminarAgenda of Today’s seminar

• Introduction and Block Diagram.

• Theory and Flowcharts.

• Implementation.

Implementation - Hardware - Software Conclusion. Future Scope.

Theory -Sensor part -Control part 8051

Microcontroller. Flow Charts.

Why are fire detection and alarm systems installed?

What the project is all about?

Advantages of this system !!

Block Diagram.

Characteristics of the ProjectCharacteristics of the Project

Why are fire detection systems required ?What the project is all about ?Multipoint Fire Detection system? What is it?Exciting features!!

Notify building occupants to take evasive action to escape the dangers of a hostile fire.

Summon organized assistance to initiate or assist in fire control activities.

Advisable to control fire immediately when it starts.

Can initiate an alarm due 2 fire and can

-Provide notification to control fire.

-Inform the fire force to take necessary action.

• Each building has its own system that is wired into a common receiving point somewhere on the site.

• Constantly staffed with special training to handle all types of calls

Wireless based. Data transmission at

higher rates. More sensitive to

smoldering fires. Different sensors on

different floors make the detectors more versatile and more responsive to fire conditions.

Cost. Large range.

Block DiagramBlock Diagram

Sensor part-1 . Control part-2. Sensor part-3. Control part-4.

The connections are made as per the block diagram.Sensor senses the smoke and inform the microcontroller.Microcontroller gives the information regarding and that data is encoded and transmitted to control room.

The connections are made as per the block diagram.RF receiver receives the data from the sensor part , decodes the data and given to the microcontroller8051.Data is displayed on the pc.As per the data received the action of control room is been transmitted through the RF transmitter to the sensor part.

The data regarding the extinguishing of fire from the control room is received through RF receiver. Decoded data is given to microcontroller8051.LED is used to indicate the signal the action taken.

LED is used to indicate the signal the action taken by microcontroller8051.

OPERATION OF THE SYSTEMDB-9

DB-9

Flow Chart of The Entire System

•The AT89V51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash Programmable and Erasable Read Only Memory (PEROM). •8051 is a 40 pin IC •8051 is an 8-bit Microcontroller.•128 byes of RAM •4KBytes of inbuilt ROM.•It have one serial port i.e. UART •Four parallel ports i.e. P0,P1,P2&P3.•It have two 16-bit Timers i.e. Timer0 ,Timer1.•It have five sources and six Interrupts•It have four Register Banks (Bank0-3) .

Port 3 special features P3.0 RXD (serial input port)P3.1 TXD (serial output port)P3.2 INT0 (external interrupt 0)P3.3 INT1 (external interrupt 1)P3.4 T0 (timer 0 external input)P3.5 T1 (timer 1 external input)P3.6 WR (external data memory write strobe)P3.7 RD (external data memory read strobe)   

MICROCONTROLLER

Implementation of Hardware

DEVELOPMENT BOARD

Transmitter circuit The transmitter circuit consists of an encoder

and an RF transmitter module.

Transmitter circuit

Encoder (HT-640) Low power and high noise immunity

cmos technology Low standby current Capable of encoding 18 bits of info Pairs with HOLTEK’s HT648 decoder 10 address pins 8 data pins Built in oscillator needs only a 5%

resistor Easily interface with an RF or IR transmission medium

RF transmitter

•The ST-TX01-ASK is an ASK Hybrid transmitter module.•ST-TX01-ASK is designed by the Saw Resonator.•Effective low cost, small size, and simple-to-use for designing.•Frequency Range:315 / 433.92 MHZ.

RF Transmitter module

Receiver circuit The receiver circuit consists of a HT648

decoder and a RF receiver module.

Receiver circuit

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Decoder (HT-648) Low power and high noise immunity

CMOS technology Capable of decoding 18 bits of info Pairs with HOLTEK’s HT640 encoder 10 address pins 8 data pins Two times of receiving check Built-in oscillator needs only a 5%

resistor Valid transmission indictor Easily interface with an RF or an IR

transmission medium

RF Receiver

•The RF receiver module used is an ASK super heterodyne receiver with PLL synthesizer and crystal oscillator.

•The operating frequency is 434MHz.

•We use RX3400 IC ,a low power ASK receiver IC suitable for variety of low power radio applications including remote keyless entry.

•The RX3400 is based on a single-conversion, super-heterodyne receiver architecture and incorporates an entire phase-locked loop (PLL) for precise local oscillator generation.

RF Receiver module

Smoke Sensor Sensor type = smoke, LPG sensor Smoke detector = Vegakit GH312 gas

module Operating voltage = 9-12 volts Level output = high 5v, low 0v Maximum range = 10m^2 surrounding Input voltage = 5vdc regulated

PC Interface to Microcontroller We use DB-9 connector to connect the

pc to the 8051 development board. The control room unit will be monitored

by a PC. So we use MAX232 to interface PC to the development board.

SOFTWARE Kiel: To compile our assembly code,

assemble our assembly source files, link and locate object modules and libraries, create hex files, and debug our target program.

Flash Magic: To download the hex file of the code onto microcontroller EPROM.

Future Scope

1. GSM based information transmission: We can extend the usability of our project by connecting a GSM modem through UART port to transmit the information of the fire to the Fire station, police station etc via SMS so that they can act upon it.

Future Scope

2. Forest fire: With the use of Photodielectric smoke sensor, forest fire can be detected by using this system.

Conclusion The use of microcontroller gives an

advantage of simple hardware, and low cost.

Multipoint fire detection system can be implemented in multistoreyed building to detect the fire, thus leads to the protection of living beings and useful resources.

With the use of less cost a safety check system can be built and requires less man power to operate the system.

Now you know...

ALARMS CAN BE YOUR

FIRST LINE OF DEFENSE

But…

You have a responsibility to use a

alarm system .

And…

Now you know how!!!

Thank u