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Registered Member #1938
Joined: Sun Jan 25 2009, 12:44PM
Location: Romania
Posts: 701
2am,... but I have the first results...I just hope this will not kill my server, as I didn't implement caching yet:
This link seems to point to a static picture. This not the case. The link points to a PHP script, that reads the values in a SQL database on my server, and creates a PNG image on-the-fly, that is offered to the web browser for display. You will see that if you hit "REFRESH", this "PICTURE" will be updated in real time. Remember that data is sent every minute. So make sure you wait at least one minute before hitting refresh.
The picture above shows the radiation level measured at my location by the device I've constructed. The radiation is measured in CPMs. Blue shows the absolute average. I'll need to make the time interval selectable (last day, month, year, etc), and provide a very raw estimation in uSv/h.
Here are other charts, with the other sensor data: Temperature comparison between DS1820 (red) and DHT11(cyan) and the average in Blue:
Humidity:
Luminosity (mostly 0 as it is night here, and a few positives from passing cars):
Please note: There is no caching implemented yet, meaning that each time a picture is displayed for you in your browser, my server will have a little bit of work for doing SQL queries and building images on the fly. Please take this into account when pressing REFRESH multiple times. I'll optimize the system later.
It's been a long project, but it finally shows some results :)
Registered Member #1938
Joined: Sun Jan 25 2009, 12:44PM
Location: Romania
Posts: 701
I changed the original graph algorithm: To an average based one: The values are integrated to a 1 hour time interval. This means lower time resolution , but the evolution/tendency is easier to see. New graph available here (or in the links above):
Registered Member #1938
Joined: Sun Jan 25 2009, 12:44PM
Location: Romania
Posts: 701
I'll finish the web interface where users can get customized charts: based on integration time, data interval or just download the raw data as CSV. When the pressure sensor gets here, I'll add that as well.
Then I'll sit and wait. When enough data is obtained, I'll do a little research on it. Meanwhile you're all invited to use the monitor from time to time.
I'm also building a project page here: but I'll also upload the details in this thread's first message.
Registered Member #2261
Joined: Mon Aug 03 2009, 01:19AM
Location: London, UK
Posts: 581
Take it on holiday?
'Bionerd' is on a partially fan sponsored trip back to Chernobyl right now. Check this video: "I think if I hold this too long I'll have a radiation burn"! (18mS/hr):
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uRADMonitor – Online remote radiation monitoring station
