data aquisition system for industry using multiple gas sensors and atmega 32 microcontroller

[seemi khan]

my project is about data aquisition system for industry using multiple MQ sensors for the detection of methane, CO, temperature, humidity,ethane,oxygen,SO2 and NO2. i m restricted to use atmega 32 microcontroller RTOS, and serial connection of the data recieved to PC. kindly help me out .guid me about sensors , coding and matlab fuctions for interfacing of the data bases to PC.

urgently needed help related to its coding

 

regards.

[Prabakaran P M]

Hi seemi khan,

Gas sensors are different types, each gas can be detected by different sensors for examle MQ-x, x can be any number according to the gas sensing type

Semiconductor sensor for Flammable gas, Plastic or Metal cover
Model	Target  Gas
MQ-2	General combustible gas
MQ-3	Alcohol
MQ-4	Natural gas, Methane
MQ-5	LPG, Natural gas, Coal gas
MQ-6	LPG, Propane
MQ-7	Carbon Monoxide (CO)
MQ-8	Hydrogen
MQ-9	CO and Combustible gas
MQ216	Natural gasCoal gas
MQ306A	LPG, Propane
MQ309A	Carbon Monoxide (CO), Flammable Gas
MQ303A	Alcohol
MQ131	Ozone O3
MQ135	Air Quality Control (NH3,Benzene,Alcohol,smoke)
Semiconductor sensor for Toxic gas
MQ136	Sulfureted Hydrogen (H2S)
MQ137	Ammonia (NH3)
MQ138	VOC (Mellow, Benzene, Aldehyde, Ketone, Ester )

refer this link for basic programming for gas sensor

http://www.engineersgarage.com/contribution/microcontroller-based-lpg-gas-detector-using-gsm-module

And for Data acquition search thingspeak navigate to the website there you can get many tutorials regarding storing sensor data to database. there is also matlab based analysis available. 

 

 

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