Bill Of Materials
Bill Of Materials
Some Theory
Low Cost Air Quality Sensor
Characteristics
Sensitivity
Proven Accuracy
Location
Unit? Range of gases, particulates and environmental conditions
Secure
Credibility
Installation and Operation
Remote Management
High quality
Particle Phase
Larger particles (>0.1 μm)
Possible sensor measurement issues:
Particle detection capability – transport of particles to sensor, sensor sensitivity
Some use a passive means to move air through sensing region; others have a fan.
Signal translation to concentration estimate
Gas Phase
Metal oxide sensors
Possible sensor measurement issues:
Interfering gases in mixture
Measurement artifact due to temperature and humidity
Eventual failure of sensor
Electrochemical sensors
Possible sensor measurement issues:
Interfering gases in mixture
Measurement artifact due to temperature and humidity
Eventual failure of sensor
Photoionization sensors
Possible sensor measurement issues:
Baseline drift
Eventual failure of sensor based on lamp lifetime.
Seeed Studio
Grove - Gas Sensor(MQ2)
Combustible Gas、Smoke
Grove - Gas Sensor(MQ5)
LPG, Natural Gas, Town Gas
Useful for gas leakage detection
Grove - Temperature and Humidity Sensor Pro
Temperature
Relative Humidity
Grove - Gas Sensor(MQ9)
Carbon Monoxide, Coal Gas, Liquefied Gas
Gas leakage detecting(in home and industry)
Grove - Dust Sensor
Grove - Air Quality Sensor
Libelium
Waspmpote
Waspmpote Plug and Sense
Sandbox
Dx
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