[aprssig] APRS Radiation sensor
Bob Bruninga bruninga at usna.eduTue Mar 22 19:27:58 UTC 2011
- Previous message: [aprssig] Clarification of APRS weather station data flow.
- Next message: [aprssig] APRS Radiation sensor
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
How about this for Radiation Telemetry: - 3 digits. Either in a WX report or in a Telemetry channel. - In a weather report the identifying byte would be "X". - So X123 would be 12 times 10^3rd nanoseverts Using Tapio's idea (below) of 2 digits of precision and one digit of decade. Bob, WB4APR -----Original Message----- From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf Of Tapio Sokura Sent: Thursday, March 17, 2011 4:40 PM To: TAPR APRS Mailing List Subject: Re: [aprssig] Clarification of APRS weather station data flow. Hi, On 03/17/2011 05:29 AM, Scott Miller wrote: > Also, unsurprisingly, there's been a big surge of interest in Geiger > counter interfacing. Bob, can we get a standard for sending ionizing > radiation levels in weather reports? I'm not Bob, but I'm sticking my spoon into the soup anyway after a little IRC chatting.. so here goes: Anyone who's familiar with radiation levels knows they can hugely vary in scale. So using a plain, say three-digit, number isn't going to scale very well (i.e. 001 = 1 uSv/h, 999 = 999 uSv/h). I'm suggesting the following: three digits, where the first two are the significant digits (mantissa) and the last one is an exponent. Base unit could be nSv/h, nanosieverts per hour (Sievert is the SI-unit for ionizing radiation dose equivalent). If abc represents the digits, the resulting radiation level would be calculated using the formula ab * 10^c nSv/h. A few examples: 000 = special case for "reading unavailable" 010 = special (theoretical) case of 1 nSv/h or under 020 = 2 nSv/h 150 = 15 nSv/h 990 = 99 nSv/h 321 = 320 nSv/h 123 = 12 uSv/h 654 = 650 uSv/h 456 = 45 mSv/h 987 = 980 mSv/h 989 = 98 Sv/h 999 = special case for 99 Sv/h or over So that's the digit part sorted out, now we just need a letter identifier/tag for it.. Tapio _______________________________________________ aprssig mailing list aprssig at tapr.org https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig
- Previous message: [aprssig] Clarification of APRS weather station data flow.
- Next message: [aprssig] APRS Radiation sensor
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
More information about the aprssig mailing list