Working on next generation of Windsond and optional add-on

Closing in to 2020, we would like to tell you what we have been up to lately and tell about our availability during the Christmas holidays.

We have been happy with the Windsond S1 model, but we feel that we want to offer an even better radiosonde to the market. That is why we are developing next generation of Windsond, called “S2”. We also mentioned this in the newsletter from earlier this year. The development is still in an early phase, so we can not reveal any release date. We have great faith in Windsond S2 and we are eager to show you the result. Some improvements that S2 will bring:

– Lower weight
– Smaller
– Easier to use
– Quicker GPS fix
– Better battery life
– Adapted for soundings in rain

We have also started evaluating an optional add-on to Windsond S2, called H4, with sophisticated T/RH sensors. With response time of a fraction of a second and possible sampling rates of 10 Hz, this enables data of very high spatial resolution. Active heating can overcome condensation. This also opens up to supporting higher altitudes (maybe 10-20 km MSL).

We will share more information as development continues. Please reach out to us if you have any questions.

The office will be closed December 21st – January 2nd. We wish you all a Merry Christmas and a Happy New Year!

Summer holiday 2019

Hello everyone!

The office will be closed during July 15-21 due to summer holidays. Some of our staff will be on vacation until first and second week of August. During this time, we can’t give you our usual, fast response time.

Have a great summer!

High resolution methane measurements from UAVs

Sparv Embedded is helping Linköping University to integrate a high precision CH4 (methane) sensor from Aeris Technologies with the Sparvio system. The sensor has an unprecedented CH4 resolution for its size, measuring variations smaller than one ppb (parts per billion). This is more than enough to map background levels, around 2 ppm. To use the same unit, the sensor measures at 0.0001 ppm resolution. After we adapted the sensor for UAV use, the payload weighs in at 1.8 kg. This is light enough to be flow around 10 minutes with a fairly small quadcopter. If given more attention, the weight could be pushed down a lot more.

This offers an exciting possibility for more convenient sampling of methane, a gas with a greenhouse effect 84 times stronger than carbon dioxide when counted over 20 years after releasing the gas into the atmosphere. In spite of this, methane emissions are still largely ignored by industries and regulation. Can more measurements help to raise awareness of the environmental importance of methane?

The picture below is from the preparations for a demo on May 15th. It shows a quadcopter hovering with the white Aeris sensor attached underneath. The quadcopter also carries a Sparvio sensor system that synchronizes data from Aeris with readings from an ultrasonic wind sensor, GPS and other sensors. Sparvio logs all data and transmits it to a ground station to visualize on a map in real-time. In the end, the combination of all data will be used to calculate not only the location of methane emission sources, but also the quantity of gas flow.P1000026

Water Sampling with UAVs

Sampling in watercourses is an activity that today isn’t easy, but very important. You need to bring a boat on bad forest roads and spend a lot of time on logistics. It is not only hard and time-consuming to perform, but also expensive. Sparv Embedded is part of a team to come up with a UAV-based solution to make these samplings easier, faster and cheaper. We use the flexible sensor system Sparvio and contribute our knowledge from working on UAV sensor solutions over the past few years. The pictures are from a demo performed on May 14th in Västervik, Sweden. At the demo, we flew a quadcopter over a lake, descending twice to allow the hanging payload to collect water samples at two different points. The samples can then be analyzed as usual in a lab.

In the next step, we will also directly measure temperature, pH, conductivity and most importantly oxygen levels. The data will be visible in real-time to the operator, allowing on-the-spot exploration of variations in water quality. This would be useful to map plumes of emissions, for example in case of chemical spills. Where a deviation is discovered, the drone could take a water sample for further analysis.2019-05-22 Picture from Anders Persson - Cut Demo Västervik DCS Vinnova-17

 

 

 

 

 

NO2 sensor design with KNMI

Rijkswaterstaat-Ministry-of-Infrastructure-and-Water-Management

We have had the pleasure to be visited by KNMI (Royal Netherlands Meteorological Institute) representatives this week for a workshop on developing their novel NO2 sensor. We had a very productive workshop on practical design, measurement principles, project planning and also touching on eventual business ventures.

NO2 (Nitrogen dioxide) has a strong negative health effect. Due to a degradation time measured in minutes or hours and the low background levels, NO2 is a clear indicator of nearby pollution. The gas is almost exclusively produced from combustion, making the sources easy to pinpoint. This makes sampling NO2 suitable to make detailed maps of urban pollution.

With a resolution around 1 ppb and response time 1 second, the KNMI NO2 sensor has a unique level of performance considering the weight and price. Once fully developed, this will enable mobile measurements of this important gas.