SGP30_Gas_Sensor 
A arduino example for SGP30_Gas_Sensor,Measurement of TVOC and CO2
Introduction of sensor
The SGP30 is a digital multi-pixel gas sensor designed foreasy integration into air purifier, demand-controlledventilation, and IoT applications. Sensirion’s CMOSens®technology offers a complete sensor system on a single chip featuring a digital I2C interface, a temperature controlled micro hotplate, and two preprocessed indoor air quality signals. As the first metal-oxide gas sensor featuring multiple sensing elements on one chip, the SGP30 provides more detailed information about the air quality.
Usage:
Download all the source files and open examples/ / .ino in arduino IDE. Compile and download and run it on a arduino board.
Notice:
- The SGP30 uses a dynamic baseline compensation algorithm and on-chip calibration parameters to provide two
complementary air quality signals. The baseline should be stored in EEPROM.When there is no baseline value
in EEPROM at the first time power-ON or the baseline record is older than seven days.The sensor has to run
for 12 hours until the baseline can be stored.
You can refer to program flow chart blow
- The H2_Signal and Ethanol_signal,Both signals can be used to calculate gas concentrations c relative to a reference concentration cref by ln(C/Cref)=(Sref-Sout)/a with a = 512, sref the H2_signal or Ethanol_signal output at the reference concentration, and sout = Sout_H2 or Sout = Sout_EthOH.
- For more accurate measurement,You can set the abslute humidity compensation,Defalt value is 11.57g/m3,A little troublesome is
that you should get relatively humidity value of environment from another way,Because there is no humidity measurement part integrated in SGP30..
Luckly, It's not much neccessary in a normal situation - All relevant example is in examples/,To get more detail
reference:
Or you can also visit sensirion|home to get more information about SGP30
This software is written by downey for seeed studio
Email:dao.huang@seeed.cc
and is licensed under The MIT License. Check License.txt for more information.
Contributing to this software is warmly welcomed. You can do this basically by
forking, committing modifications and then pulling requests (follow the links above
for operating guide). Adding change log and your contact into file header is encouraged.
Thanks for your contribution.
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