Lot-Based Soil-Monitoring System With Revolutionary Technology

Calidium Vinum is a newly founded IoT based company, located in the Rheingau-region of Germany that provides a soil monitoring and heating system for vineyard development and management. Our main focus lies on providing a sustainable solution for viticulturalists looking to protect their crops from the severe effects of climate change and other external factors.
A few years/months/weeks (?) back we were able to sit down with multiple wine growers in the Rheingau-area of Germany in order to talk about the effects that climate change has had on their vineyards, as well as listen to their concerns about the future.

During those conversations one thing became very apparent: We needed to come up with a sustainable method for vintners and agriculturalists alike, to deal with the weather fluctuations, that are a direct result of the earth’s shifting climate.

That is why Calidium Vinum was founded. Coming from an IoT background, it was our mission to develop a highly advanced technological product that could not only monitor the different moisture and nutrient levels of the soil but would also automatically make all the necessary adjustments in order secure the grapevine harvest with minimal losses.

Irrigation is not the only use for soil monitoring. Each year, erosion from changes in land use causes millions of dollars in damage to property and natural water systems. In order to understand the causes of erosion and make predictions about when and where erosion will occur, hydrologists need to record rainfall, sediment and soil moisture. The water infiltration rate of soil is a function of soil moisture—if the soil is dry, the infiltration rate will be sufficient to prevent run off. Overland water flow may occur if rain events happen at a time when soil is saturated. Monitoring soil moisture is an important input parameter into erosion prediction models.

Regional drought can severely affect the economy and even lead to starvation in some areas of the world. With advances in computer processing and environmental modeling methods, scientists are beginning to understand regional water budgets and hydrological processes. An important input into drought forecasting models is changes in regional soil moisture. Long-term soil moisture data over large regions can be used to predict and characterize harmful droughts.

Soil monitoring is also critical to dust control, biofuel production, phytoremediation, reservoir recharge from snowpack, soil carbon sequestration studies, watershed hydrology studies, satellite groundtruthing, landslide studies, and is used in mesonets and weather station networks around the world.


With the aim of providing a fast and reliable, as well as an easy-to-use solution to those problems, we operate with only the most advanced, state of the art technology, which can be implemented across vineyards all over the world.

It consists of a capacitive soil moisture sensor that allows for exact measurement of the soil’s moisture level.

The DS18B20 waterproof temperature sensor, for accurate assessment of the soil’s temperature.

An NPK sensor which is allows for accurate evaluations of the soil’s nutrients as well as an electrical heating cable.


Soil Geomorphology

Soil Properties

Salinity / Electrical Conductivity (EC)

Dielectric Permittivity

Soil Monitoring Applications

Soil Moisture and Irrigation

Soil Sensor Technologies

Soil Sensor Calibration

Sensor Accuracy

…and much more!


    Stevens groundwater monitoring stations will typically use either cellular or GOES for telemetry. For cellular (CDMA/GSM/HSPA),  both Avo and eTracker are cellular gateway which provide “virtual” cloud-based data logging, and therefore don’t require a physical data logger. All data is sent to the cloud for storage (with a backup stored locally) and the station can be configured remotely.

    Stevens offers 4 different options for connecting you with your system’s data:

    Because it is an all-in-one solution requiring only sensors, Avo is a great solution if the station is going to be only temporary, where a simple and quick station setup is important or where data reliability is critical. Avo sends data directly to the cloud (via cellular) where it is logged, so does not require a separate data logger.


    eTracker also sends data directly to the cloud via cellular where it is logged, so it doesn’t require a separate data logger. Choose eTracker if you want to customize what power system components are used, or will be using a greater number of sensors than Avo supports.

    Retrieving data is simple with Stevens-Connect, our cloud-based software that requires no infrastructure to scale to any number of stations or users. Use it to configure your station, visualize your data, analyze measurements, manage alarms, perform calculations, and set up data routing. Alternatively, you can have the data sent to any other HTTP or FTP destination or 3rd-party software like Aquarius or WISKI.

    Stations built on a platform other than Avo require a power source (battery and solar panel is typical for remote deployments) and a power regulator. SOLO is great choice because it’s a solar charge regulator, intelligent power manager and power system sensor all-in-one (it also allows remote power cycling through eTracker).

    Build your system and get a quote​





      Logging &

      Data Retrieval &

      Instruments required for Soil Nutrient Monitoring & Analysis System

      Capacitive Soil
      Moisture Sensor


      Ds18b20 Waterproof Temperature Sensor


      NPK Sensor


      Over the past few decades, soil monitoring has become increasingly important. Environmental factors such as climate change, dwindling water resources, and threatened habitats are driving the need to monitor the environment and implement better policies to protect it. Many natural processes in the environment are driven by or in some ways related to soil hydrological processes. Monitoring soil moisture conditions provides important information for the protection of, and in the understanding of local and regional water resources.

      Our magic

      The installation process as well as the way our product actually functions is in fact very straightforward. First the sensors and the heating cables are inserted into the soil of the grapevines in different places throughout the vineyard. The sensors that we use are directly connected to our monitoring system and are able to continuously transmit the recorded data for evaluation. Through the help of our integrated AI-system, our technology allows for an accurate assessment of the collected data and if the soil’s temperature drops below the critical level it will send out an alert through our mobile app and the corresponding heating cables will automatically begin the heating process of the soil.