I measured CO2 levels in my bedroom and it where highest just before sleep (around 1000ppm), then wen't down during sleep. The article got some very high readings. Either they're doing "exercise" or the room has bad ventilation.
On whether changes in bedroom CO2 levels affect sleep quality
51–60 of 322 posts
Re: On whether changes in bedroom CO2 levels affect sleep quality
#52Re: On whether changes in bedroom CO2 levels affect sleep quality
#53I've worked on environmental sensing iot projects and have seen the cost of co2 sensors. Almost all the cheap ones are VOC sensors which infer a co2 level by assuming the VOC output is from humans (rather than paint for example). Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very…
Are there any brands or products you would reccomend for measuring CO2 in my house? Ideally with some way to hook it up to my computer.
Re: On whether changes in bedroom CO2 levels affect sleep quality
#54There's one big problem with this entire idea of co2 levels affecting sleep quality or humans in general:
Even though there are cognitive effects of CO2, most often the CO2 levels in indoor rooms are simply a sign of low oxygen levels. In fact, there should be an inverse relationship between CO2 and oxygen in rooms. So an experiments would need to take this into account and supply pure oxygen to make up for the oxygen that has been used up.
Re: On whether changes in bedroom CO2 levels affect sleep quality
#55I was lucky to get my hands on 5 proper co2 sensors from university, while I was teaching and working. So plenty of test places. What I found: -Just a couple of hours in a office, without ventilation spikes the co2 enough to make everyone dizzy and tired by the end of the day. Keeping eye on the meter and ventilating properly, increased everyones productivity and people werent so tired by the end of the day. - Classr…
+1 here. I worked at an IoT startup with a lot of gas sensors. When we tested the CO2 sensor, we immediately noticed a correlation between early-afternoon sleepiness and high CO2 levels. Opening the door to the outside world lowered levels and within 5 minutes we felt more awake. It changed how I work: I still like to be warm and cozy, but now I'll bundle up and endure changing the air rather than seal every door and window as I used to.
Re: On whether changes in bedroom CO2 levels affect sleep quality
#56I've worked on environmental sensing iot projects and have seen the cost of co2 sensors. Almost all the cheap ones are VOC sensors which infer a co2 level by assuming the VOC output is from humans (rather than paint for example). Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very…
I have developed custom Ethylene sensors in the past for customers, and Dynament (UK) is a manufacturer that I can definitely recommend if anyone wants to do this and go down the DIY electronics route without having to dig through a bunch of Chinese products to find the "right one". https://www.dynament.com/products/gas-sensors/standard-non-e...
Cool! I worked at an ethylene-sensing IoT startup (fruit ripeness natch). What was the core sensor you used? (We were using off-the-shelf, but somewhat pricey, electrochemical sensors)
Re: On whether changes in bedroom CO2 levels affect sleep quality
#57I've worked on environmental sensing iot projects and have seen the cost of co2 sensors. Almost all the cheap ones are VOC sensors which infer a co2 level by assuming the VOC output is from humans (rather than paint for example). Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very…
Can you recommend the lowest cost CO2 sensor that one can buy that would give reliable readings?
Re: On whether changes in bedroom CO2 levels affect sleep quality
#58”But if one room can mix with and increase the Netatmo’s room all the way up to 1934PPM, what must the original concentration have been like?” Why not move the weather station to the bedroom for a couple of nights? (And make sure the sensor is at nose/mouth height, preferably close to it. CO2 is heavier than air, so concentrations may be higher closer to the floor in a closed room with little movement) I would also d…
> CO2 is heavier than air, so concentrations may be higher closer to the floor in a closed room with little movement
How significant is the gradient? Would it make a noticeable exposure difference to sleep in a high bed versus a mattress on the floor?
Re: On whether changes in bedroom CO2 levels affect sleep quality
#59I've worked on environmental sensing iot projects and have seen the cost of co2 sensors. Almost all the cheap ones are VOC sensors which infer a co2 level by assuming the VOC output is from humans (rather than paint for example). Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very…
Are there any brands or products you would reccomend for measuring CO2 in my house? Ideally with some way to hook it up to my computer.
It looks like things have moved on quickly since the other year when I was more involved in this! This company does some good products, some of which are fairly easy to interface: https://www.gassensing.co.uk/products/
Re: On whether changes in bedroom CO2 levels affect sleep quality
#60I've worked on environmental sensing iot projects and have seen the cost of co2 sensors. Almost all the cheap ones are VOC sensors which infer a co2 level by assuming the VOC output is from humans (rather than paint for example). Given the cost of the device I would be amazed if it wasn't a VOC based sensor. The cheapest CO2 sensors I've seen are well over $250, even in bulk. CO2 is quite innert, so it requires very…
I got an NDIR CO2 sensor on AliExpress for $20. Do you think one of those would just have low accuracy or be uncalibrated?
Would be interested to find out because if its just uncalibrated plotting out the relative differences it still would be useful (e.g. seeing a X% increase on whatever scale the sensor using at night versus day could provide enough of an indicator that something is going on and more investigations are warranted.)