From: Andy Butterworth
Sent: 10 February 2016 18:52
To: THEPort-Pier33 (THE Port 2015 twelfth group)
Subject: Notes from yesterday's meeting
Yesterday evening we had a meeting of the PIER 33 team. While not much
has been done on the mask
itself since the last meeting, Andy and Erik explained the progress that
has been made on the UV
The activity has focused on using the amplified photodiode “TOCON”
sensors from the German
company sglux, which have the potential to be used in a sensitive UV
meter to replace the existing
expensive one from Solarlight. Andy presented the prototype meter he had
put together using
a TOCON-E1 erythema weighted sensor, demonstrating that a precision of
0.1 mMED/hr is achievable,
which is 10 times the precision of the expensive meter. Erik has been in
contact with sglux and also with
Solarlight in the US, where he has been discussing with the engineer who
is responsible for the cheaper
Solarmeter range. They are preparing an adaptation of their Solarmeter
architecture to use the
TOCON sensor, which they should be able to test next week, as Erik has
arranged with sglux that they
will send them some sample diodes.
Bruce will try to organise the loan of a light source for doing some
comparative measurements between
the TOCON-E1 and the Solarlight 3D XP meter. The laser group already
have the filters necessary to do
this kind of measurement, as well as a spectrometer.
Erik has also made contact with a company called Shade in California,
which is designing a wearable UV
sensor for Lupus sufferers linked to a smartphone. Wafa thinks this
could be interesting as it can be
worn all the time and could be programmed to automatically give an
indication of safe UV levels. It
remains to be seen whether they can achieve the sensitivity we require.
We will have a phone meeting
with the company in the next week or so.
As a third possibility, the company Photon Lines in Paris, with which
Wafa also has a contact, has said
that if we make a design, they could possibly manufacture and
commercialise it. We leave this option
open at the moment while we’re waiting to see what the Solarmeter people
come up with.
A short discussion on the mask confirmed our conclusion from the
hackathon that we should base the
design on an existing commercial mask, with the minimum possible number
of custom parts. The critical
issue is still the ventilation, for which we would like to do some 3D
simulations, or at least get some
professional advice from a cooling & ventilation expert. Iulia will
continue to try to find someone to help
us with this. When we have a more concrete design, we can contact the
mask manufacturers (3M,
Honeywell, etc.) to try to get their support.
Next meeting to be announced, in about 4 weeks’ time.