GSM based Time and Temperature controlled Device for Natural Gas Appliances (P-0258) (MFN 4709)

Abstract

About 16.4% of total natural gas is used by residential sector Residential sector uses about 95% of its total natural gas consumption for space heating, water heating and for cooking. Most of the gas is used for water heating purpose especially in winters. But problem is that a lot of gas is wasted due to poor maintenance especially due to outdoor installation of boilers and geysers. This project aims at to control flow of gas in gas appliances with in specific range of set time and temperature. Time/Temperature range can be set manually using keypad as well as through wireless communication using GSM module. LCD is used for display purpose. In time controlled mode clock of GSM module is used while in temperature controlled mode we use temperature sensor to monitor the water temperature. Pressure sensor is used to ensure opening of valve only when gas pressure is adequate enough to generate flame and flame sensor is used to ensure presence of flame. Along with pressure, temperature and flame sensor gas sensor is also installed to detect gas leakage to ensure user’s safety. All components are interfaced with Microcontroller PIC 18F4520 which is programmed to save desired settings and to control turning ON/OFF of solenoid valve, automatic spark kit is installed which starts the spark when solenoid allows the flow of gas. Microcontroller is programmed to work in a loop which continuously monitors time/ temperature range, gas pressure, presence of flame and gas leakage. If any error occurs the microcontroller gives signal to buzzer which is installed for the safety purpose. The idea makes it possible to use gas appliances for desired time/temperature range only which can for sure save a lot of natural gas. User is facilitated by controlling appliances by sending a simple message and user’s safety is ensured by using gas sensor.