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[aprssig] [ui-view] APRS Radiation sensor

Bob Bruninga bruninga at usna.edu
Thu Mar 24 14:28:52 UTC 2011


Geeze, you were right.  We did allow WX to be included in Flood gage
symbols.  Was that a good idea?  Following that logic, we'd also need to
parse Radiation hazards for WX.  Seems to me if a stations is transmitting
the "weather format" which includes floods and radiation, then it should be
a WX symbol.  Any s0oftware that wants to highlight those stations with
special sensors can "search and display" by selection.

On the other hand, all old software will not easily see these new
capabilityies since they cannot search for the special fields.  In that
sense, new code, parsing the NEW symbols allows for OLD software to see NEW
capabilities (symbols) but not recognize the weather?  Now I'm leaning back
to that.  Yes, because that gives a measure of backwards compatibility to
all existing users to SEE new sensors and capabilities with their existing
software (if they want to actually see the data, they can see it manually or
upgrade their software, but at least they know it is there..

But new software can do it all.  Yes, I think that is the correct approach.
So I guess we do need a new symbol just for SENSORS.  And Radiation is one
of them.  And it can contain WX.

Bob, WB4APR


-----Original Message-----
From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
Of Bob Bruninga
Sent: Thursday, March 24, 2011 10:16 AM
To: 'Lynn W. Deffenbaugh (Mr)'; 'TAPR APRS Mailing List'
Subject: Re: [aprssig] [ui-view] APRS Radiation sensor

Good points...

>From: Lynn W. Deffenbaugh (Mr) [mailto:ldeffenb at homeside.to]
> Ok, I've seen the new Xnns weather parameter for radiation,
> and I've noted the previously existing requirement that not
> only weather station symbols be checked for weather, but
> also water and flooding symbols may contain weather.
>
> I've also noted discussion elsewhere in the thread that
> overlay R on symbol H be used for a "Radiation Detector".
>
> Merging these two things together, should an RH symbol also
> be checked for the presence of weather data, possibly to
> include the X, or is the RH for something completely different.
> If RH symbol packets should be scanned for weather data,
> then should it be specified in weather-new.txt for completeness?

You have raised good points, and I think it was Julian also raised this
point.

OK, how about this.  We have defined Xnnn as a field in weather reports.
Thus a WX symbol is required according to the spec.  Thus, this is a sensor.
On the map it looks just like any other weather station but its radiation
sensor can be found and parsed.

The RH hazard symbol is mostly for an OBJECT to highlight the location of a
"Hazardous condition".

Bob, Wb4APR

On 3/23/2011 3:27 PM, Bob Bruninga wrote:
> I  updated the APRS12 addendum to this standard for Radiation.
> http://aprs.org/aprs12/weather-new.txt
>
> Bob, Wb4APR
>
> -----Original Message-----
> From: ui-view at yahoogroups.com [mailto:ui-view at yahoogroups.com] On Behalf
Of
> Bob Bruninga
> Sent: Tuesday, March 22, 2011 3:28 PM
> To: 'TAPR APRS Mailing List'
> Cc: 'IZ6RDB'; 'Guido Trentalancia'; jjesson at voyager.net; 'sylvainfaust';
> ui-view at yahoogroups.com
> Subject: [ui-view] APRS Radiation sensor
>
> 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
>
> _______________________________________________



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