Touch screen based temperature monitoring and controlling with set limit.

Description

This kit controlling and monitoring temperature is a standalone digital temperature meter that also checks the temperature of the heating element of a device according to its requirement. The use of embedded technology makes this closed-loop feedback control system efficient and reliable. Microcontroller (ATMEGA168) allows dynamic and faster control. Different interfaces make the system user-friendly. The sensed and set temperature values are simultaneously displayed on the LCD. It is very compact using a few components and can be implemented for several applications including air-conditioners, water-heaters, snow melters, ovens, heat-exchangers, mixers, furnaces, incubators, thermal baths, and veterinary operating tables.

In the kit controlling and monitoring temperature, the ATMEGA168 microcontroller is the heart of the circuit as it controls all the functions. In this device, we are implementing temperature monitoring with set upper limit and lower limit and regulation of the environment to maintain the temperature between the limit by putting on AC and heater.

This controlling and monitoring temperature is a temperature sensor for monitoring the temperature and a touch screen for setting the temperature range. It can be operated in two modes, automatic and manual. This device uses a regulated 5V, 500mA power supply. 7805 three-terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac output of secondary of 230/12V step down transformer. This device is useful in process industries for maintenance and controlling of appliance which is sensitive to temperature.