NATURAL BURNER BASED GAS FIRED BOILER/WATER HEATER TEMPERATURE CONTROLLER.

摘要

The overall apparatus is divided into two-separate modules a main controller module and the ignition module (sequence controller). These modules are further divided into sub modules according to their functionalities. Both of the modules have their own separate microcontrollers which work together by a simple yet unique communication technique to control the temperature of a boiler with minimum gas consumption. The whole system is able to work either on AC main power through a DC adapter and/or using inbuilt battery backup (standalone). The main controller encompasses the control system, timing functions, the LCD/display module, temperature sensor interface, communication interface for the ignition module and the battery/power management system. The ignition module encompasses an innovative ignition system, solenoid valve driving and a fast and reliable flame sensing technique. The overall system implements a set of algorithms which helps detect or prevent false flame sensing to avoid accidents. The ignition module implements a special hardware using customized components and circuit design to prevent problems of EMI (Electromagnetic Interference) generated due to high voltage (more than 20KV) electrical fields.