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Discussion Groups | Piclist | Tracking Battery Condition
A discussion group for the PICMicro microcontroller. Also called the Microchip PIC, this list is dedicated to the use and abuse of this fine, simple, microcontroller. Close to topic posts are welcome, ie. general electronics.
Tracking Battery Condition - jpakrashi - Oct 29 2:15:47 2009
Hi Friends,
Here are the requirements:
In a critical setting where equipment are backed by UPS already, we need to monitor all/any batteries that has deterioted/missing and send Signal identifying the bad/missing battery.
Any idea/suggestion will be appreciated.
Regards,
Jyoti Pakrashi
Kolkata, India
------------------------------------
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Here are the requirements:
In a critical setting where equipment are backed by UPS already, we need to monitor all/any batteries that has deterioted/missing and send Signal identifying the bad/missing battery.
Any idea/suggestion will be appreciated.
Regards,
Jyoti Pakrashi
Kolkata, India
------------------------------------
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
Re: Tracking Battery Condition - mrumunhum - Oct 29 15:01:08 2009
Kolkaka,
Funny you should ask. I'm working on a PIC project for monitoring batteries in my solar system. I will be keeping a running account of my progress. There are some links that you could look at. The link is: http://64.124.13.3/projects/PIC_Project
You need to supply more info about you environment, like your batteries, 2VDC, 5VDC, 12VDC, etc. Your budget, home grown or off the shelf?
Any way, back to my project. If you wish, send me your Email address and I will create a mailing list for the project.
--- In p...@yahoogroups.com, "jpakrashi"
>
> Hi Friends,
> Here are the requirements:
> In a critical setting where equipment are backed by UPS already, we need to monitor all/any batteries that has deterioted/missing and send Signal identifying the bad/missing battery.
> Any idea/suggestion will be appreciated.
> Regards,
> Jyoti Pakrashi
> Kolkata, India
>
------------------------------------
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
Re: Tracking Battery Condition - rtstofer - Oct 29 15:38:24 2009
--- In p...@yahoogroups.com, "jpakrashi"
>
> Hi Friends,
> Here are the requirements:
> In a critical setting where equipment are backed by UPS already, we need to monitor all/any batteries that has deterioted/missing and send Signal identifying the bad/missing battery.
> Any idea/suggestion will be appreciated.
> Regards,
> Jyoti Pakrashi
> Kolkata, India
>
It clearly depends on the UPS. The last system I worked on was 1000 kVA and used 4 parallel strings of about 70 6V batteries.
I used to have a service company come in and individually test the batteries.
Finding deteriorated batteries without being able to put a full load on the battery is next to impossible. Measuring voltage is meaningless unless it clearly indicates a failure. Just because the voltage is correct doesn't mean the battery will provide enough current.
So, define the size of your UPS, how many strings, how many batteries per string, voltage rating of the batteries and, most importantly, the battery technology. If this is a large UPS and it is not using wet cell technology (preferably in glass cases), you will probably never have a reliable system. There's just no way to keep 300 'no maintenance' batteries in good condition. One battery fails, the entire string failes and the remaining strings can't carry the load. So they fail too.
There's a reason power plants and telephone companies use lead-acid technology in glass cases.
Richard
------------------------------------
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RE: Re: Tracking Battery Condition - JCullins - Oct 29 19:30:37 2009
I built a remote control car battery tester a few years ago,
I would switch a load to drag the battery all the way down the switch to
charge
And displayed the charge cycle in a graph on the PC screen charge v over
time. You could tell when the battery was beginning to fail looking at the
curve. I was kind of crude but that's what the customer wanted and he was
very happy with it. He would rate his batteries and use the best ones in the
finals of the races.
I know this is not what is needed here but thought I would chime in anyway.
Jim
www.soundlogicus.com
Plasma THC-300
Serial Spindle Speed control
-----Original Message-----
From: p...@yahoogroups.com [mailto:p...@yahoogroups.com] On Behalf Of
rtstofer
Sent: Thursday, October 29, 2009 2:38 PM
To: p...@yahoogroups.com
Subject: [piclist] Re: Tracking Battery Condition
--- In p...@yahoogroups.com, "jpakrashi" wrote:
>
> Hi Friends,
> Here are the requirements:
> In a critical setting where equipment are backed by UPS already, we need
to monitor all/any batteries that has deterioted/missing and send Signal
identifying the bad/missing battery.
> Any idea/suggestion will be appreciated.
> Regards,
> Jyoti Pakrashi
> Kolkata, India
>
It clearly depends on the UPS. The last system I worked on was 1000 kVA and
used 4 parallel strings of about 70 6V batteries.
I used to have a service company come in and individually test the
batteries.
Finding deteriorated batteries without being able to put a full load on the
battery is next to impossible. Measuring voltage is meaningless unless it
clearly indicates a failure. Just because the voltage is correct doesn't
mean the battery will provide enough current.
So, define the size of your UPS, how many strings, how many batteries per
string, voltage rating of the batteries and, most importantly, the battery
technology. If this is a large UPS and it is not using wet cell technology
(preferably in glass cases), you will probably never have a reliable system.
There's just no way to keep 300 'no maintenance' batteries in good
condition. One battery fails, the entire string failes and the remaining
strings can't carry the load. So they fail too.
There's a reason power plants and telephone companies use lead-acid
technology in glass cases.
Richard
------------------------------------
to unsubscribe, go to http://www.yahoogroups.com and follow the
instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
I would switch a load to drag the battery all the way down the switch to
charge
And displayed the charge cycle in a graph on the PC screen charge v over
time. You could tell when the battery was beginning to fail looking at the
curve. I was kind of crude but that's what the customer wanted and he was
very happy with it. He would rate his batteries and use the best ones in the
finals of the races.
I know this is not what is needed here but thought I would chime in anyway.
Jim
www.soundlogicus.com
Plasma THC-300
Serial Spindle Speed control
-----Original Message-----
From: p...@yahoogroups.com [mailto:p...@yahoogroups.com] On Behalf Of
rtstofer
Sent: Thursday, October 29, 2009 2:38 PM
To: p...@yahoogroups.com
Subject: [piclist] Re: Tracking Battery Condition
--- In p...@yahoogroups.com, "jpakrashi"
>
> Hi Friends,
> Here are the requirements:
> In a critical setting where equipment are backed by UPS already, we need
to monitor all/any batteries that has deterioted/missing and send Signal
identifying the bad/missing battery.
> Any idea/suggestion will be appreciated.
> Regards,
> Jyoti Pakrashi
> Kolkata, India
>
It clearly depends on the UPS. The last system I worked on was 1000 kVA and
used 4 parallel strings of about 70 6V batteries.
I used to have a service company come in and individually test the
batteries.
Finding deteriorated batteries without being able to put a full load on the
battery is next to impossible. Measuring voltage is meaningless unless it
clearly indicates a failure. Just because the voltage is correct doesn't
mean the battery will provide enough current.
So, define the size of your UPS, how many strings, how many batteries per
string, voltage rating of the batteries and, most importantly, the battery
technology. If this is a large UPS and it is not using wet cell technology
(preferably in glass cases), you will probably never have a reliable system.
There's just no way to keep 300 'no maintenance' batteries in good
condition. One battery fails, the entire string failes and the remaining
strings can't carry the load. So they fail too.
There's a reason power plants and telephone companies use lead-acid
technology in glass cases.
Richard
------------------------------------
to unsubscribe, go to http://www.yahoogroups.com and follow the
instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
Re: Tracking Battery Condition - mrumunhum - Oct 29 19:30:42 2009
I forgot to point you to this: http://www.rowetel.com/blog/?p=68
--- In p...@yahoogroups.com, "jpakrashi" wrote:
>
> Hi Friends,
> Here are the requirements:
> In a critical setting where equipment are backed by UPS already, we need to monitor all/any batteries that has deterioted/missing and send Signal identifying the bad/missing battery.
> Any idea/suggestion will be appreciated.
> Regards,
> Jyoti Pakrashi
> Kolkata, India
>
------------------------------------
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
--- In p...@yahoogroups.com, "jpakrashi"
>
> Hi Friends,
> Here are the requirements:
> In a critical setting where equipment are backed by UPS already, we need to monitor all/any batteries that has deterioted/missing and send Signal identifying the bad/missing battery.
> Any idea/suggestion will be appreciated.
> Regards,
> Jyoti Pakrashi
> Kolkata, India
>
------------------------------------
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )