Customer & partner stories

Water level monitoring solution for Blue Planet Ecosystems

Terabee is extremely excited that a sensor from our distance sensor range, the TeraRanger Evo Mini, is being used by a company that is revolutionizing the way that humanity grows food. Blue Planet Ecosystems’ prototype aquaculture farm “turns sunlight into seafood™” and the Evo Mini is proving critical in addressing its water level monitoring challenges.
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Blue Planet Ecosystems has devised a revolutionary self-contained fish farm that doesn’t rely on artificial fish feed. LARA (Land-based Automated Recirculating Agriculture System) is a modular aquaculture system, which will eventually be housed across three levels in 40 foot shipping containers. In the first level the system uses sunlight to grow algae. In the second level the algae transforms into zooplankton. The third level houses the growing fish that are automatically fed by the system’s zooplankton.

Infographic Aquarium 01

The innovative concept has been designed to release the pressure on natural ecosystems. The aquacultures are self contained and fully automated, which means they can be built in areas where land cannot be used for traditional agriculture, such as deserts and cities. Countries including Dubai and Singapore, which are committed to being more self sufficient, have already expressed a keen interest.

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Level sensors for water level monitoring

Amongst other variables that are being closely monitored and measured, the need to control the water level within the fish tank is critical. An aeration pump system ensures oxygen flows into the tank and CO2 is evacuated. If the water levels within the tank change, Blue Planet Ecosytems needs to be immediately alerted, as this could indicate that the pipes are blocked and the fish could be in danger.

The company had been trialing an ultrasound sensor to monitor water levels in its prototype system, but ran into a couple of challenges. Ultrasound is unreliable due to the sound signal bouncing off the hard surfaces of the tank. But more problematic was the fact that the temperature of the tank is 28°, which proved too humid for the ultrasound sensor. Further research revealed that Terabee’s Evo Mini works in high temperatures, and trials on the current prototype have proved that our sensor can handle the humidity and delivers reliable output from a 3 cm range.

The Evo Mini in action

The Evo Mini is ideal for Blue Planet Ecosystems’ requirements. The water level sensor is fully enclosed in an ABS housing, which protects it from dust and water splashes. It offers versatile performance with a range from 3 cm to 3.3 m, and is one of the most accurate sensor modules in Terabee’s range. The sensor measures the prototype’s water levels to detect changes every minute. A shift in water levels of more than 2cm would be a cause for concern.


The Evo Mini gives precision readings for a 2 cm shift and has performed very well for us. We will certainly be using Terabee’s water level sensors in our future prototypes. We have also valued the support we have received from the Terabee team. Going forward we’d like to explore the use of Terabee’s Time-of-Flight sensors to help us monitor the growth of fish as we need sensors that measure distance with good resolution and accuracy.” Cecile Deterre, Data Scientist, Blue Planet Ecosystems.

Terabee has been delighted to support Blue Planet Ecosystems with its prototypes. We look forward to continuing to support the next iteration of the project as larger scale prototypes and systems are tested.

Related products

TeraRanger Evo Mini

Single and multi-pixel capability in 1 sensor - 3 cm to 3.3 m range, 9 grams
Purchase from Reseller
Our smallest and lightest TeraRanger Evo sensor provides versatile performance and value for money. Optimized for indoor distance sensing, Evo Mini offers ranging capabilities from 3 cm up to 3.3 m. Switch easily from single-pixel to multi-pixel modes. Evo Mini also features a robust ABS enclosure for increased protection and is supported with Arduino and Raspberry Pi sample codes and free ROS nodes to get your projects up and running in no time.

The TeraRanger Evo Mini is no longer available. You can purchase available stock from our Reseller partners using the link below.

TeraRanger Evo Mini Array Kits

Build custom ToF sensor arrays - 0.03 m to 3.3 m, 4 or 8 sensors, from 60 grams
Purchase from Reseller
Build custom arrays, position sensors where needed, and forget about crosstalk with our Evo Mini Array Kits. Developed for indoor distance measurement applications, the modular and low-cost kit comes in 2 configurations with either 4 or 8 sensors. Connect the sensors to the central Hub and stream out data via a single USB or UART interface. Benefit from 3 on-board modes, including crosstalk avoidance mode.

Product is no longer in production. Use link below to access stock available with Reseller partners.
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