Arduino based Incubator temperature and humidity control Project

aidgambinya@gmail.com

Problem Statement:Temperature and humidity measurement and control in a baby or chick incubator.

Introduction:Inside the incubator,optimum conditions must be maintained so as to achieve maximum and positive results,for example,there is need to maintain the proper temperature and humidity levels so as to avoid these parameters from reaching extreme values which may be detrimental to the health and growth of the biological organisms being monitored.This can be done manually by physically assigning a human being to monitor any changes in the aforementioned parameters and hence make appropriate corrective actions to maintain the optimum levels.
However due to man's inaccuracies and error,proper levels are usually difficult to maintain.Therefore,there is need for automatic and intelligent monitoring using sensors and microcontrollers and some alarms to alert the responsible authorities about any anomalies in the process.

Objective:Measure the humidity and temperature separately and triugger alarms also actuate the respective corrective devices to maintain optimum values.

                                                     
                                                        BLOCK DIAGRAM
Refer to above link







                                           BLOCK DIAGRAM FUNCTIIONALITY
On the input side,there are two sensors,the LM35 temperature sensor and the humidty sensor.The two sensors produce analog signals which are converted by the analogue to digital converter in the microcontroller.The analogue input channel is a 10 bit channel which accepts values from 0 to 1023 and these decimal values are converted into corresoponding digital values which are then converted into the equivalent temperature values using appropriate arithmetic logic.On the output side,two relays are actuated depending on the humidity or temperature value being read by the input channel of the Arduino Microcontroller.
If the temperature is above a set value,a relay is actuated which turns on a fan or air conditioner to regulate the temperature so as to maintain it at the desired level.Also if the humidity level is above a certain value,two fans are activated one for extraction of humid air from the incubator and the other one to blow in warm air so as to reduce the humidity level.