LPG GAS BOOKING USING

LOAD CELL&EMERGENCY

ALERT- SMS

There are many methods available for booking a LPG gas in

the gas agency. Methods include Online booking,

Telephone booking etc. But some times we may forget to do

the booking due to various reasons. It will be difficult

situation for the one who uses LPG gas for cooking

regularly. So we have proposed a new system which

automatically books a gas when the gas is about to empty.

Proposed Idea:

In our Project we have used a LOAD CELL to monitor

the weight of the LPG gas regularly. IF the gas level is

below a threshold level, then a SMS Message will be sent to

a gas agency automatically to book a new gas. Then it waits

for the reply from the agency about the status of the

booking. (Booked or not). It is then displayed on the lcd.

In addition to this it also support two new features.

(1). It automatically detects fire and switches an Water

pump to putoff the fire and sends an SMS Message to the

Fire Station.

(2). It also Includes an LPG gas leakage sensor for detecting

gas leakage and produces alarm. It also sends an SMS

Message to the user regarding the gas leakage and fire.

Gas Booking Office:

Block Diagram

Power Supply unit

GSM MODEM

(Gas agency) Computer

Fire Sensor

LPG Gas Sensor

Instrumentaion amplifier

(Signal Conditioning

Circuit) dsPIC 30F4013

Microcontroller

GSM Modem

LCD Display

GAS Booked

MAX 232

DC Motor Water Pump

Relay Driver circuit

Relay12V Power Supply

For Water pump

Processing Ckts

AlarmDriver circuit

Alarm