Sign in with
Sign up | Sign in
Your question

Choose a solar captor for an IP camera ?

Tags:
  • Webcams
  • Battery
  • Internet Access
  • IP Camera
  • Peripherals
Last response: in Computer Peripherals
Share
June 8, 2005 11:08:15 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

HI,

I plan also to install an IP camera in a field to oversee horses. But
in this field there is no electricity nor Internet access. So I plan to
install a solar captor, a battery, and wifi system (with yagi antenna,
....) Have you already installed such a configuration ? What kind oof
solar captor have you installer, what kind of battery, ... where to
purchase ? ...

Thanks

More about : choose solar captor camera

June 8, 2005 1:25:37 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

"Pierre" <traul@freespam.fr> wrote in message
news:traul-87C507.07081508062005@news3-e.proxad.net...
> HI,
>
> I plan also to install an IP camera in a field to oversee horses. But
> in this field there is no electricity nor Internet access. So I plan to
> install a solar captor, a battery, and wifi system (with yagi antenna,
> ...) Have you already installed such a configuration ? What kind oof
> solar captor have you installer, what kind of battery, ... where to
> purchase ? ...
>
> Thanks

I haven't built one yet but planning a similar project, ie remote wireless
camera.

There's seems to be various products around-

http://www.sailgb.com/p/silva_solar_ii_12v_charger/

http://www.maplin.co.uk/Module.aspx?C=SEO&U=SM&ModuleNo...

and my plan was to use one of these and a sealed lead-acid battery (in
suitable container !).
June 8, 2005 3:40:47 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

In article <d86a29$odn$1@news7.svr.pol.co.uk>, "dylan" <no@mowhere.com>
wrote:

> and my plan was to use one of these and a sealed lead-acid battery (in
> suitable container !).

Without forgeting the regulator between the solar panel and the battery.

I'm interested in discussing directly with you in private (emai). ok for
you ?
Related resources
Anonymous
June 8, 2005 6:37:08 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

might search solar at www.dslreports.com
guy there set an AccessPoint/repeater on a hill to get to the other side,,
nice pictures and documentation
... would be same basic deal.

"Pierre" <traul@freespam.fr> wrote in message
news:traul-87C507.07081508062005@news3-e.proxad.net...
> HI,
>
> I plan also to install an IP camera in a field to oversee horses. But
> in this field there is no electricity nor Internet access. So I plan to
> install a solar captor, a battery, and wifi system (with yagi antenna,
> ...) Have you already installed such a configuration ? What kind oof
> solar captor have you installer, what kind of battery, ... where to
> purchase ? ...
>
> Thanks
June 8, 2005 9:57:51 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

"Pierre" <traul@freespam.fr> wrote in message
news:traul-9069B0.18275808062005@news3-e.proxad.net...
> Today I called the company Silva (http://www.silva.se/) and they told me
> to look at the solar products from ICP Global (http://www.icpsolar.com/)
> because the panel from silva is not enough powerful for what I plan to
> do according to the french Silva subsidiary.
>

I was thinking of one of these which says 65 / 105 mA @ 8v

http://www.swann.com.au/new%20brochures/Security%20Rang...
June 8, 2005 10:30:32 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

"dylan" <no@mowhere.com> wrote in message
news:D 8782k$qff$1@news8.svr.pol.co.uk...
>
> "Pierre" <traul@freespam.fr> wrote in message
> news:traul-9069B0.18275808062005@news3-e.proxad.net...
>> Today I called the company Silva (http://www.silva.se/) and they told me
>> to look at the solar products from ICP Global (http://www.icpsolar.com/)
>> because the panel from silva is not enough powerful for what I plan to
>> do according to the french Silva subsidiary.
>>
>
> I was thinking of one of these which says 65 / 105 mA @ 8v
>
> http://www.swann.com.au/new%20brochures/Security%20Rang...
>

I found some of ICP products here in the UK which look promising for me

http://www.electricfence-online.co.uk/ishop/1047/shopsc...

http://www.electricfence-online.co.uk/ishop/1047/shopsc...
June 9, 2005 3:14:45 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

In article <d8782k$qff$1@news8.svr.pol.co.uk>, "dylan" <no@mowhere.com>
wrote:

> "Pierre" <traul@freespam.fr> wrote in message
> news:traul-9069B0.18275808062005@news3-e.proxad.net...
> > Today I called the company Silva (http://www.silva.se/) and they told me
> > to look at the solar products from ICP Global (http://www.icpsolar.com/)
> > because the panel from silva is not enough powerful for what I plan to
> > do according to the french Silva subsidiary.
> >
>
> I was thinking of one of these which says 65 / 105 mA @ 8v
>
> http://www.swann.com.au/new%20brochures/Security%20Rang...
> tra%20Night%20Hawk%20SW-P-WOCEX.pdf

This one doesn't seem to be an IP webcam.
June 9, 2005 3:37:47 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

In article <d879vt$5os$1@news6.svr.pol.co.uk>, "dylan" <no@mowhere.com>
wrote:

> "dylan" <no@mowhere.com> wrote in message
> news:D 8782k$qff$1@news8.svr.pol.co.uk...
> >
> > "Pierre" <traul@freespam.fr> wrote in message
> > news:traul-9069B0.18275808062005@news3-e.proxad.net...
> >> Today I called the company Silva (http://www.silva.se/) and they told me
> >> to look at the solar products from ICP Global (http://www.icpsolar.com/)
> >> because the panel from silva is not enough powerful for what I plan to
> >> do according to the french Silva subsidiary.
> >>
> >
> > I was thinking of one of these which says 65 / 105 mA @ 8v
> >
> > http://www.swann.com.au/new%20brochures/Security%20Rang...
> > Extra%20Night%20Hawk%20SW-P-WOCEX.pdf
> >
>
> I found some of ICP products here in the UK which look promising for me
>
> http://www.electricfence-online.co.uk/ishop/1047/shopsc...
>
> http://www.electricfence-online.co.uk/ishop/1047/shopsc...

Pretty interesting !

I'm also looking for a king of faq about solar panel (how to choose one,
....) Any idea ?
June 9, 2005 2:10:12 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

"Pierre" <traul@freespam.fr> wrote in message
news:traul-F051C0.23144508062005@news3-e.proxad.net...
> In article <d8782k$qff$1@news8.svr.pol.co.uk>, "dylan" <no@mowhere.com>
> wrote:
>
>> "Pierre" <traul@freespam.fr> wrote in message
>> news:traul-9069B0.18275808062005@news3-e.proxad.net...
>> > Today I called the company Silva (http://www.silva.se/) and they told
>> > me
>> > to look at the solar products from ICP Global
>> > (http://www.icpsolar.com/)
>> > because the panel from silva is not enough powerful for what I plan to
>> > do according to the french Silva subsidiary.
>> >
>>
>> I was thinking of one of these which says 65 / 105 mA @ 8v
>>
>> http://www.swann.com.au/new%20brochures/Security%20Rang...
>> tra%20Night%20Hawk%20SW-P-WOCEX.pdf
>
> This one doesn't seem to be an IP webcam.

You are correct, I wasn't really considering the type of camera at present,
the only difference to the system is the power load.

Looking at this D-Link Wireless IP camera,
http://www.dlink.com.au/ArticleDocuments/46/C-DCS900W-0...
the load is 2.5Amps @ 5V which will certain change the power requirements.

or another @ 700mA http://www.dynamode.net/ip_cameras/IP-500W.htm
June 9, 2005 2:31:10 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

I've been thinking about the power requirements:

If the camera requires 700mA then total load for 24 hours = 700mA * 24hrs =
16.8 AmpHrs
to supply this you obvious need a solar panel to supply this plus any losses
(10% ?)

If you assume its full sun for 12 hrs a day you need a panel rated to supply
(16.8+10%)/12 = 1.5A
if the panel only produces 50% of this, due to weather, short days etc then
you need (16.8+10%)/6= 3A

If you use the first camera I thought of you only need 105mA (full IR ON) *
24hrs = 2.52AmpHrs
12hrs of sun gives a panel rating required of (2.52+10%)/12= 0.231A (231mA)
50% output from panel gives a requirement of 0.461A (461mA)

Do you agree with this ? , I'd need to confirm the 10% figure and what is an
expected output averaged over the year.
June 9, 2005 3:53:17 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

Recalculating with the 20% losses and Amphrs from a panel from Campbellsci
reference :

For the low power camera you need 105mA (full IR ON) * 24hrs = 2.52AmpHrs.

Campbell says a 10W panel will supply approx 2.5AmpHrs per day, dependent on
location, in Summer but only 0.5 in winter !

In summer then you need 2.52/2.5 * 10W = 10W panel
In winter then you need 2.52/0.5 * 10W = 50W panel

for 700mA load multiply by 7 so for summer = 70W, winter 350W panel.

This will improve if you live south of the UK !
June 9, 2005 10:55:23 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

Pierre wrote:
> In article <d8782k$qff$1@news8.svr.pol.co.uk>, "dylan" <no@mowhere.com>
> wrote:
>
>
>>"Pierre" <traul@freespam.fr> wrote in message
>>news:traul-9069B0.18275808062005@news3-e.proxad.net...
>>
>>>Today I called the company Silva (http://www.silva.se/) and they told me
>>>to look at the solar products from ICP Global (http://www.icpsolar.com/)
>>>because the panel from silva is not enough powerful for what I plan to
>>>do according to the french Silva subsidiary.
>>>
>>
>>I was thinking of one of these which says 65 / 105 mA @ 8v
>>
>>http://www.swann.com.au/new%20brochures/Security%20Rang...
>>tra%20Night%20Hawk%20SW-P-WOCEX.pdf
>
>
> This one doesn't seem to be an IP webcam.
No...that camera is not an IP camera. It is a wireless version of the
camera I am using which is designed to plug into the Video in connector
of a TV/VCR or PC capture card.
June 10, 2005 12:46:44 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

In article <d89734$ifk$1@news6.svr.pol.co.uk>, "dylan" <no@mowhere.com>
wrote:

> Recalculating with the 20% losses and Amphrs from a panel from Campbellsci
> reference :
>
> For the low power camera you need 105mA (full IR ON) * 24hrs = 2.52AmpHrs.
>
> Campbell says a 10W panel will supply approx 2.5AmpHrs per day, dependent on
> location, in Summer but only 0.5 in winter !
>
> In summer then you need 2.52/2.5 * 10W = 10W panel
> In winter then you need 2.52/0.5 * 10W = 50W panel
>
> for 700mA load multiply by 7 so for summer = 70W, winter 350W panel.
>
> This will improve if you live south of the UK !


I'm not an electricity specialist. But some time ago, I received a well
done explanation (written in french). I post it below for your info
(hope you can translate it) :


Methodologie d'utilisation de l'energie solaire (avec un debut comme ca,
j'ai deja fait fuir 50% des lecteurs...)

Le principe de l'alimentation solaire est le suivant : Un panneau solaire
charge une batterie qui alimentera l'application. Ainsi, on a une source
d'alimentation disponible mme quand le soleil est absent. Il faut
cependant
dimensionner la batterie et le panneau.

Premiere chose a connaitre : La consommation de l'objet a alimenter
(tension
et courant)
Deuxio : La periode durant laquelle on l'alimente (jour et nuit 365J/an
ou 2
minutes tous les trois mois ?)
Troisiemement : La region o on fait fonctionner l'objet (au dela du
cercle
polaire, on oublie le fonctionnement 365J/an...)
Quatrieme point : Le degre de fiabilite de l'alimentation (200% de
disponibilite et de fiabilite dans le cas de la surveillance d'un coeur
de
centrale nucleaire, un peu moins pour la station meteo personnelle qui ne
sert qu'a savoir le matin si on met une petite laine ou pas)
Cinquio (ou quinto, ou quinte plus, j'y perds mon latin) : La place dont
on
dispose pour installer un panneau et eventuellement une batterie, et la
visibilite du soleil a cet endroit (arbres, immeubles, emplacement au
fond
d'une mine, etc.)
Sexo (?) : Le budget dont on dispose (un panneau de technologie
"Spatiale"
est trois a quatre fois plus performant qu'un panneau de base, mais vaut
10
a 20 fois plus cher)

Je reprends ci-dessous un message que j'avais envoye il y a deux ans sur
ce
NG, mais qui est toujours valable, si ce n'est que les prix ont du
baisser
de facon significative avec la progression des technologies et la baisse
du
dollar :

Quelques sites :
http://www.solorb.com/gfc/elect/

http://www.solorb.com/gfc/elect/solarcirc/

http://www.us-epanorama.net/psu.html#solar

(je n'ai pas verifie depuis un certain temps, ne m'en veux pas si ils ne
sont plus valables)

D'abord les besoins : Par exemple, une application qui consomme 0,5
Amperes
24H/24 necessitera donc une energie de 0,5 x 24 = 12 Amperes-Heure (Ah),
soit, avec une batterie courante qui produit une tension moyenne de 12
Volts, une puissance de 12 x 12 = 144 Watts-Heure. Afin de ne pas vider
completement la batterie, on admet une decharge de 50%, la batterie devra
donc tre d'un modele 2 x 12 = 24 Ah (soit la taille d'une batterie de
petite voiture).

Ensuite le panneau solaire : Entre 10 H et 17 H, le 20 juin, en plein
soleil, dans la region de Montpellier, un panneau solaire d'une surface
de
0,3 m2 produit une puissance de 15 Watts environ (ceci correspond, dans
ces
conditions, a la puissance nominale indiquee par le constructeur), en
technologie "Silicium Amorphe", pas tres cher (10 euros par watt) mais
avec
un rendement moyen.

Ce qui fait un apport d'energie de 15 x 7 = 105 Watts-Heure : On voit
donc
qu'il faudrait un panneau d'environ 0,5 m2 environ (puissance nominale
20 a
25 Watts) pour assurer la recharge quotidienne de la batterie.

Il faut cependant raisonner sur plusieurs jours, selon les variations de
la
meteo et dimensionner la batterie de facon a ce qu'elle ne se decharge
pas
trop si le temps n'a pas permis une recharge correcte durant la journee.
Un
coefficient de 2 n'est pas irrealiste... (batterie de 48 Ah, panneau de
30
Watts)

Par contre, si on utilise le bidule en question dans le Nord durant
l'hiver,
on peut diviser par 10 (ou plus) l'apport d'energie...Par exemple, en
region
parisienne, par temps couvert et en hiver, le mme panneau de 0,3 m2
apporte
une energie quotidienne de 6 Watts-Heure au maximum.

On arrive alors a un panneau 10 a 20 fois plus grand : Pour de telles
dimensions, on trouve d'autres technologies de panneaux offrant un
meilleur
rendement (puissance nominale de 100 a 150 Watts par m2) et les ecarts de
prix se reduisent.

En resume, les calculs suivants donnent une bonne approximation :
* Batterie (capacite en Ah)
Cb = T x I x Kd x Kr
T = Duree d'utilisation de l'application (en heures)
I = Courant consomme par l'application (en Amperes)
Kd = Coefficient lie a la decharge acceptable (2 ou 3)
Kr = Coefficient lie a la possibilite de recharge du panneau solaire (2
a 5
selon les variations de conditions meteo sur une periode de plusieurs
jours)

* Panneau solaire (Puissance nominale constructeur)
Pn = T x I x 2 x Kg x Ks x Km
T = Duree d'utilisation de l'application (en heures)
I = Courant consomme par l'application (en Amperes)
Kg = Coefficient lie a la geographie (de 1 pour le sud de la France a 3
pour
le nord)
Ks = Coefficient lie a la saison d'utilisation ( de 1 pour l'ete a 3 pour
l'hiver)
Km = coefficient lie a la meteo habituelle (de 1 pour un plein soleil a 5
pour la pluie ou la neige)

Bien sr le panneau sera oriente au sud, avec un angle d'environ 45° (a
affiner selon la periode et le lieu d'utilisation : En hiver, le soleil
est
plus ou moins bas sur l'horizon selon la latitude.)

Enfin, en ce qui concerne l'electronique de contrle de charge de
batterie,
si on dimensionne le panneau au plus juste pour l'ete, une simple diode
anti-retour suffit (de type "Schottky" pour une chute de tension
minimale).
Par contre, si l'application est prevue pour fonctionner aussi bien en
hiver
qu'en ete, le panneau sera dimensionne tres largement et risquera de
surcharger la batterie lorsque l'ensoleillement sera maximal : Un
circuit de
limitation est alors necessaire (voir les adresses ci-dessus).

Ouf ! Je crois que j'ai tout dit. J'ai ete un peu long, mais je pense
avoir
repondu a beaucoup de questions qui se posent sur l'energie solaire...
June 10, 2005 12:46:45 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

Unfortunately not good at french but this bit looks interesting:


* Panneau solaire (Puissance nominale constructeur)
Pn = T x I x 2 x Kg x Ks x Km
T = Duree d'utilisation de l'application (en heures)
I = Courant consomme par l'application (en Amperes)
Kg = Coefficient lie a la geographie (de 1 pour le sud de la France a 3
pour
le nord)
Ks = Coefficient lie a la saison d'utilisation ( de 1 pour l'ete a 3 pour
l'hiver)
Km = coefficient lie a la meteo habituelle (de 1 pour un plein soleil a 5
pour la pluie ou la neige)

so if I understand right, using 700mA load :

for summer = 24 x .7 x 3 (N France) x 1 (summer) x 1 (Sunny) = 50 W
for winter = 24 x .7 x 3 x 3 x 1 (sunny day) = 150W
for winter = 24 x .7 x 3 x 3 x 5 (heavy snow ?) = 450 W

which seems to roughly agree with my calculations of 70 W (summer) and 350 W
(winter)

and the battery capacity (not too clear on some of this !) :

* Batterie (capacite en Ah)
Cb = T x I x Kd x Kr
T = Duree d'utilisation de l'application (en heures)
I = Courant consomme par l'application (en Amperes)
Kd = Coefficient lie a la decharge acceptable (2 ou 3) ?
Kr = Coefficient lie a la possibilite de recharge du panneau solaire (2
a 5
selon les variations de conditions meteo sur une periode de plusieurs
jours) ?

= 24 x .7 x 2 x 2 = 67 Ah (best case ?)
or
=24 x .7 x 3 x 5 = 252 Ah (worst case?)
June 10, 2005 12:48:49 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

In article <d894a0$gcf$1@news6.svr.pol.co.uk>, "dylan" <no@mowhere.com>
wrote:

> some useful info on choosing a solar panel , haven't read it all yet.
>
> ftp://ftp.campbellsci.co.uk/pub/csl/outgoing/uk/technot...
>
> http://www.greenweld.co.uk/data/How%20to%20calculate%20...
> requirements.pdf
>
> http://www.humboldt.edu/~aej1/AJTips_No3_Solarnet_v4n1....
>
> http://www.solarnet-ea.org/downloads/solar3.pdf

very interesting
June 10, 2005 2:36:04 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

> and the battery capacity (not too clear on some of this !) :
>
> * Batterie (capacite en Ah)
> Cb = T x I x Kd x Kr
> T = Duree d'utilisation de l'application (en heures)
> I = Courant consomme par l'application (en Amperes)
> Kd = Coefficient lie a la decharge acceptable (2 ou 3) ?
> Kr = Coefficient lie a la possibilite de recharge du panneau solaire (2
> a 5
> selon les variations de conditions meteo sur une periode de plusieurs
> jours) ?
>
> = 24 x .7 x 2 x 2 = 67 Ah (best case ?)
> or
> =24 x .7 x 3 x 5 = 252 Ah (worst case?)
>
>

Some calculations on this:

In summer the figures for the solar panels (ref campbell) equate to the
panel supplying full current for the equivalent of 4.4 hrs per day (for 10W
panel 2.5Ahr/0.57A=4.4hrs)
The load during the 'unlit' hours will be .7 * (24-4.4)= 13.7AmpHrs so
during the lit period the panel must charge the battery to at least
13.7AmpHrs, so must supply 13.7/4.4 = 3.11 Amps +.7 A for the load this
equates to a approx 60 W panel.

The battery must be at least 13.7 AmpHr capacity BUT note from information I
can find the MAXIMUM charge rate for a sealed lead-acid battery is approx
amphr rating / 4, so for 3.11 A charging you need at least a 12.44 AmpHr
battery.

In winter the figures for the solar panels (ref campbell) equate to the
panel supplying full current for the equivalent of 0.9 hr per day (for 10W
panel 0.5Ahr/0.57A=0.9 hr)
The load during the 'unlit' hours will be .7 * (24-0.9)= 16.2 AmpHrs so
during the lit period the panel must charge the battery to at least 16.1
AmpHrs, so must supply 16.2/1 = 16.2 Amps +.7 A for the load this equates to
a 300 W panel.

The battery must be at least 16.2 AmpHr capacity BUT note from information I
can find the MAXIMUM charge rate for a sealed lead-acid battery is approx
amphr rating / 4, so for 16A charging you need at least a 65AmpHr battery.
June 10, 2005 11:07:59 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

>
> Some calculations on this:
>
> In summer the figures for the solar panels (ref campbell) equate to the
> panel supplying full current for the equivalent of 4.4 hrs per day (for
> 10W panel 2.5Ahr/0.57A=4.4hrs)
> The load during the 'unlit' hours will be .7 * (24-4.4)= 13.7AmpHrs so
> during the lit period the panel must charge the battery to at least
> 13.7AmpHrs, so must supply 13.7/4.4 = 3.11 Amps +.7 A for the load this
> equates to a approx 60 W panel.
>
> The battery must be at least 13.7 AmpHr capacity BUT note from information
> I can find the MAXIMUM charge rate for a sealed lead-acid battery is
> approx amphr rating / 4, so for 3.11 A charging you need at least a 12.44
> AmpHr battery.
>
> In winter the figures for the solar panels (ref campbell) equate to the
> panel supplying full current for the equivalent of 0.9 hr per day (for 10W
> panel 0.5Ahr/0.57A=0.9 hr)
> The load during the 'unlit' hours will be .7 * (24-0.9)= 16.2 AmpHrs so
> during the lit period the panel must charge the battery to at least 16.1
> AmpHrs, so must supply 16.2/1 = 16.2 Amps +.7 A for the load this equates
> to a 300 W panel.
>
> The battery must be at least 16.2 AmpHr capacity BUT note from information
> I can find the MAXIMUM charge rate for a sealed lead-acid battery is
> approx amphr rating / 4, so for 16A charging you need at least a 65AmpHr
> battery.
>
>

Note these calculations assume you have full sun (max) output for the
required period, I would imagine this won't be the case and you will get
reduced sun levels for a longer period.
Although I believe it won't effect the size of panel you will require I
believe you could use a lower capacity battery in the winter calculation
because the max current will be less ie half output of the panel at 8A will
only require a 32AmpHr battery.

Also they are calculated for South UK / Northern France. From the e-mail you
sent me Southern France requires a 3 times less panel if I understood
correctly.

I think my next step will be to buy a panel and try it out !.
June 11, 2005 12:41:18 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

Today I received a phone call from ICP global french representative. He
just asked me to give him the DC and mA for the webcam and the wifi
product to be able to tell me which kind of solar panel and battery.

I had a long discussion with axis about the choice of the good webcam.
The guy told me that I must choose a webcam with iris if not the ccd
sensor will be destroy very quickly ! So he advised me to choose the
axis 211 ( for 789 euros !!!)
http://www2.axis.com/files/datasheet/211a/ds_211a_en_23...


I called anixter the french wholesaler of proxim. The tech guy suggested
me to choose the following product that enclosed the bridge and the
antenna in one box :
http://www.proxim.com/learn/library/datasheets/QB505424...
5A4.pdf
June 11, 2005 12:41:19 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

"Pierre" <traul@freespam.fr> wrote in message
news:traul-EBF76C.20411810062005@news6-e.proxad.net...
> Today I received a phone call from ICP global french representative. He
> just asked me to give him the DC and mA for the webcam and the wifi
> product to be able to tell me which kind of solar panel and battery.
>
> I had a long discussion with axis about the choice of the good webcam.
> The guy told me that I must choose a webcam with iris if not the ccd
> sensor will be destroy very quickly ! So he advised me to choose the
> axis 211 ( for 789 euros !!!)
> http://www2.axis.com/files/datasheet/211a/ds_211a_en_23...
>
>
> I called anixter the french wholesaler of proxim. The tech guy suggested
> me to choose the following product that enclosed the bridge and the
> antenna in one box :
> http://www.proxim.com/learn/library/datasheets/QB505424...
> 5A4.pdf

This looks like professional kit, I have used an axis camera and they give
good results, but it isn't wireless is it ?
Maybe you are going to use the power over ethernet facility or is the bridge
and antenna to go at the PC or the camera or both ?

Power wise the camera is approx 400mA which is an improvement, but as I say
there is no wireless bit. The bridge looks like it needs mains or 48v.

Cheers
June 11, 2005 12:01:45 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

In article <d8cq5n$93l$1@news6.svr.pol.co.uk>, "dylan" <no@mowhere.com>
wrote:

> This looks like professional kit, I have used an axis camera and they give
> good results, but it isn't wireless is it ?
> Maybe you are going to use the power over ethernet facility or is the bridge
> and antenna to go at the PC or the camera or both ?
>
> Power wise the camera is approx 400mA which is an improvement, but as I say
> there is no wireless bit. The bridge looks like it needs mains or 48v.

In my case I don't plan to use PoE because my camera is supposed to be
install at the top of a mast to oversee horses. The horses field is
about 1 km from the house where there is a internet access. In this
configuration there will be a waterproof box at the top of the mast. In
this box I'll put a battery, the solar régulator. Outside the box there
will be :
- at the top of the box : the solar panel
- on the side one : the webcam in a waterproof box. FYI the mobotix
webcam is already waterproof and doesn't require any waterproof box.
- on the side two : a proxim 'like' box to send and receive the IP
signal to the house where there is an internet access.
- an ethernet wire directly connected between the webcam and the
proxim

As you see if I connect a short etnernet wire between the webcam and the
wireless kit (proxim ?) It will not be possible to connect them together
directly. I'll need a sort of switch to insert the electricity on the
ethernet wire. This switch will be installed in the waterproof box and I
don't want to put to many thing in that box. This why I'll not use the
PoE. Furthermore Proxim has not power adaptor :-( it only uses the PoE
technology. So proxym will not be the solution for me.
June 11, 2005 1:30:25 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

>
> As you see if I connect a short etnernet wire between the webcam and the
> wireless kit (proxim ?) It will not be possible to connect them together
> directly. I'll need a sort of switch to insert the electricity on the
> ethernet wire. This switch will be installed in the waterproof box and I
> don't want to put to many thing in that box. This why I'll not use the
> PoE. Furthermore Proxim has not power adaptor :-( it only uses the PoE
> technology. So proxym will not be the solution for me.

Axis have a wireless unit for their cameras

http://www.axis.com/products/80211g_device/index.htm
Anonymous
July 2, 2005 8:32:19 AM

Archived from groups: alt.comp.periphs.webcam (More info?)

> ...DCS-900W
> the load is 2.5Amps @ 5V which will certain change the power
> requirements.

That spec is confusingly written and/or wrong. Maybe the power adaptor can
produce that much. The next line down shows that the cam itself draws only
900mA. Actual measurement with this cam shows the draw to be 700-something
mA. Obviously it will vary with indicator LED's on or off etc. But no way
does it draw 2.5 A.
July 2, 2005 7:05:22 PM

Archived from groups: alt.comp.periphs.webcam (More info?)

"Steve Kraus" <screen@SPAMBLOCKfilmteknik.com> wrote in message
news:nNoxe.11981$jX6.4424@newsread2.news.pas.earthlink.net...
>> ...DCS-900W
>> the load is 2.5Amps @ 5V which will certain change the power
>> requirements.
>
> That spec is confusingly written and/or wrong. Maybe the power adaptor
> can
> produce that much. The next line down shows that the cam itself draws
> only
> 900mA. Actual measurement with this cam shows the draw to be
> 700-something
> mA. Obviously it will vary with indicator LED's on or off etc. But no
> way
> does it draw 2.5 A.

Thanks for the correction.
!