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Raspberry Pi Forum A white board excercise on designing a Raspberry Pi temperaturing measuring device
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A white board excercise on designing a Raspberry Pi temperaturing measuring device

colporteur
colporteur over 7 years ago

Looking for input on the design of a temperature measuring device using a Raspberry Pi.
 

I would like to use this forum to do a white board design exercise on a project I am developing. One of the interactions I miss after retiring from a 37 years career in technology, is the ability to sit with a group of techies and socialize an idea to get their perspectives. I would like to try using the Element14 community for such an exercise.
 

In a closed group, I would know the backgrounds of the individuals participating and from experience be able to evaluate their have opinions. Not all opinions have value. Using this forum doesn’t afford many of the face to face controls. I would like to work around that. I suspect there will be more overhead on my part to evaluate the input. I look forward to interacting with those who wish to participate.
 

Please provide your input around designing a temperature recording device using a raspberry Pi. The term input is defined as suggestions, recommendations, best practices, directions or questions. The pi_temp u

 

Looking for input on the design of a temperature measuring device using a Raspberry Pi.
 

I would like to use this blog to do a white board design exercise on a project I am thinking of starting. One of the interactions I miss after retiring from a 37 years career in technology, is the ability to sit with a group of tech guys to socialize an idea and get perspectives you may not have thought about. I would like to try using the Element14 blog for such an exercise.
 

In a closed group, I would know the backgrounds of the individuals participating and from experience be able to evaluate their have opinions. Using this forum doesn’t afford those controls. I can accept that. I suspect there will be little more overhead on my part to evaluate the input. I look forward to inacting with those who wish to participate.
 

Please provide input around designing a temperature recording device using a raspberry Pi. The term input, can be defined as suggestions, recommendations, best practices, directions or questions. The pi_temp unit will be used to measure and record water and air temperatures in and around an Atlantic Salmon fish ladder. The ability to operate without AC power would be an advantage but not a requirement. The unit will be isolated and have no access to a communication network. Data collected should be stored locally and retrieved manually on, no predetermined schedule. The unit may be deployed in rugged conditions exposed to the elements. People deploying and operating the unit, as well as collecting the data may have little technical skills.
 

Context:

I made an offer to build a device using a Pi, for a non-profit organization that works for the preservation of Atlantic salmon, to record water and air temperature and store the data for collection. This is a volunteer project with no funding provided. All cost are out of pocket. There are no plans to make this into a commercial product. I will write for publication in a technical resource when the project is complete. I saw a manual process and thought, hey I can fix that.
 

The project provides only the personal gain of applying years of technology knowledge to assist in solving a real world problem. My retirement now affords me time to take advantage of some of the offerings in the Element14 community.
 

Before starting the final design, I will make a post on this forum containing a list of the requirements I have gathered and hope to achieve in the project. This is mean’t to be a white board dialog exercise (experiment) to solicit input from tech folks. I welcome your participation.

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  • genebren
    0 genebren over 7 years ago

    Hi Sean,

     

    I would start out by pointing out that a Raspberry Pi is an awfully big hammer for such a simple task as capturing and storing a couple of temperatures.  This is related to the cost of a RPI and the energy to run one.  There are several other available devices that might be better suited to the job, based on cost and potential battery life.  Also, it was not clear to me if this was a device that would be left in place (for continuous monitoring) or moved from site to site to collect measurements in an assisted sampling process?

     

    Otherwise, this sounds like an interesting project that could benefit those working to assist in the preservation of Atlantic salmon (or potentially other species).  I worked with a company that developed survey instrumentation for people involved in monitoring the health of fish populations (length, weight, species, tag info, etc.).  There seems to be a few other companies/organizations that are also looking into these same sort of things, so looking first to see what is already out there would be a good idea.

     

    Good luck,

    Gene

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  • genebren
    0 genebren over 7 years ago

    Hi Sean,

     

    I would start out by pointing out that a Raspberry Pi is an awfully big hammer for such a simple task as capturing and storing a couple of temperatures.  This is related to the cost of a RPI and the energy to run one.  There are several other available devices that might be better suited to the job, based on cost and potential battery life.  Also, it was not clear to me if this was a device that would be left in place (for continuous monitoring) or moved from site to site to collect measurements in an assisted sampling process?

     

    Otherwise, this sounds like an interesting project that could benefit those working to assist in the preservation of Atlantic salmon (or potentially other species).  I worked with a company that developed survey instrumentation for people involved in monitoring the health of fish populations (length, weight, species, tag info, etc.).  There seems to be a few other companies/organizations that are also looking into these same sort of things, so looking first to see what is already out there would be a good idea.

     

    Good luck,

    Gene

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  • colporteur
    0 colporteur over 7 years ago in reply to genebren

    Thanks Gene your point is valid. I have limited my device choice to the Pi because I am just playing in what I like. I also consider an Ardunio as an option but would like to explore Pi first.

     

    Currently there is one site (fish ladder) that is visited twice a day, to record the water temperature and release any fish contained in the counting gates. A rather long extension cord provides power to a camera used by a TV station at the site. Not sure if that will be available going forward.

     

    MY battery thoughts were, what if the unit was deployed at a site that had no power. I recall reading about a weather project using a Pi that was solar powered. I would consider a power support option in design. I'm thinking Pi zero is the best choice because of lower power requirements.

     

    Really appreciate your input.

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  • Problemchild
    0 Problemchild over 7 years ago in reply to colporteur

    Hi Sean I recently was doing a test on the RPI on a Bitscope  single an quad  carrier and I needed a 3-4 foot square Solar panel to even start to drive a Pi.

    It wasn't a permanent set up and had no battery but it shows that you need quite a lick of power to  run these devices even whilst starting up as well as a requirement to charge a battery for dark operation.

    Agreed a zero or a PI with the power management configured well would be much better but it shows how you must size your panel quite generously for reliable operation !

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