Neus: verschil tussen versies

Versie van 9 mrt 2016 15:31

Neus (or "Nose" for Dutch impaired people) sniffs the gasses that are sucked out of the klusbunker. It's that little pcb screwed onto the right wall.

The measurements can be viewed at https://keetweej.vanheusden.com/revspace/nose.php. Note that you can click on most (not the one at the top) graphs to view a heatmap of the measurements.

it uses 7-10 watt (because the sensors have little heaters in them)
has 8 MQ-sensors
Arduino based
talks via an NRF24L01 with the rest of the space
has a DHT11 for temperature/humidity
temp/hum may have an offset because they are in the airway and because they are located to 8 heaters(!)
if I remember correctly, I used this bunch of sensors. these are the MQ-sensors with some extra logic soldered on a breakout board.

Initially designed/soldered by Flok. Later on Benadski boosted the sensitiviy of the sensors.

@@ Regel 3: / Regel 3: @@
 The measurements can be viewed at [https://keetweej.vanheusden.com/revspace/nose.php https://keetweej.vanheusden.com/revspace/nose.php]. Note that you can click on most (not the one at the top) graphs to view a heatmap of the measurements.
+== what is what ==
+* MQ-135 NH3, NOx, alcohol, Benzene, smoke, CO2
+* MQ-2 LPG, i-butane, methane, alcohol, Hydrogen, smoke
+* MQ-3 alcohol
+* MQ-4 compressed natural gas
+* MQ-6 LPG, iso-butane, propane, alcohol, smoke
+* MQ-7 carbon monoxide
+* MQ-8 Hydrogen, alcohol, LPG,cooking fumes
+* MQ-9 CO/Combustible gas, Methane, Propane and CO
 == facts ==
@@ Regel 22: / Regel 34: @@
 * [https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-6.pdf MQ-6]
 * [https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-7.pdf MQ-7]
+* [https://cdn.sparkfun.com/datasheets/Sensors/Biometric/MQ-8%20Ver1.3%20-%20Manual.pdf MQ-8]
+* [http://www.dfrobot.com/image/data/SEN0134/SEN0134_MQ-9.pdf MQ-9]
 == pics ==
@@ Regel 28: / Regel 42: @@
 == who ==
-Initially designed/soldered by [[Flok]]. Later on [[Benadski]] made some modifications to reduce the detection-range.
+Initially designed/soldered by [[Flok]]. Later on [[Benadski]] boosted the sensitiviy of the sensors.