Dave

  • neilh and Profile picture of DaveDave are now friends 2 weeks, 2 days ago

  • Dave posted a new activity comment 2 weeks, 6 days ago

    Hi there Neil,

    Well right now we’re quite focused on a handful of important characteristics of forest ecosystems, predominantly air T, soil T, plant available moisture, and volumetric soil moisture. The general paradigm shift we see now is that single sensor nodes do not provide the spatial or temporal resolution for us to understand microclimate…[Read more]

    • For a leafy canopy 2.4Ghz gets absorbed by the water. 900Mhz gives a much range in a leafy canopy for lower power. The WiFi standard is evolving to include a “low data rate” in sub 1GHz – but no time lines for which silicon will have it first.
      I’d be interested in what you find with specific sensors – it can be painful – however calibration and…[Read more]

  • Dave‘s profile was updated 3 weeks, 4 days ago

  • Dave changed their profile picture 3 weeks, 4 days ago

  • Dave posted a new activity comment 3 weeks, 4 days ago

    I’m working on constructing wireless sensor networks with the Forest Service and a handful of Research Universities across New England for use in forested ecosystems (soil, temp, humidity, irradiance, etc). Although I’m an ecosystem scientist and not an electrical engineer, there is a growing need to get portable low-cost sensors out for…[Read more]

    • Hi Dave
      Great to hear about it – this is a board to bring together the ecosystem sciences and software/electronic to make it happen.
      Be great to hear how you are going about defining and refining the sensor networks.
      I’ve been designing remote instream water sensors. The challenges has been low cost environmental protection, solar powering, field…[Read more]

      • Hi there Neil,

        Well right now we’re quite focused on a handful of important characteristics of forest ecosystems, predominantly air T, soil T, plant available moisture, and volumetric soil moisture. The general paradigm shift we see now is that single sensor nodes do not provide the spatial or temporal resolution for us to understand microclimate…[Read more]

        • For a leafy canopy 2.4Ghz gets absorbed by the water. 900Mhz gives a much range in a leafy canopy for lower power. The WiFi standard is evolving to include a “low data rate” in sub 1GHz – but no time lines for which silicon will have it first.
          I’d be interested in what you find with specific sensors – it can be painful – however calibration and…[Read more]

    • I’m working on constructing wireless sensor networks with the Forest Service and a handful of Research Universities across New England for use in forested ecosystems (soil, temp, humidity, irradiance, etc). Although I’m an ecosystem scientist and not an electrical engineer, there is a growing need to get portable low-cost sensors out for…[Read more]

      • Hi Dave
        Great to hear about it – this is a board to bring together the ecosystem sciences and software/electronic to make it happen.
        Be great to hear how you are going about defining and refining the sensor networks.
        I’ve been designing remote instream water sensors. The challenges has been low cost environmental protection, solar powering, field…[Read more]

        • Hi there Neil,

          Well right now we’re quite focused on a handful of important characteristics of forest ecosystems, predominantly air T, soil T, plant available moisture, and volumetric soil moisture. The general paradigm shift we see now is that single sensor nodes do not provide the spatial or temporal resolution for us to understand microclimate…[Read more]

          • For a leafy canopy 2.4Ghz gets absorbed by the water. 900Mhz gives a much range in a leafy canopy for lower power. The WiFi standard is evolving to include a “low data rate” in sub 1GHz – but no time lines for which silicon will have it first.
            I’d be interested in what you find with specific sensors – it can be painful – however calibration and…[Read more]

  • Dave became a registered member 3 weeks, 4 days ago