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SenZ2 wireless level radar transmitter

Monitoring water system infrastructures in real-time, and in high resolution, is very important to provide early warnings in cases of floods and to eventually understand the impact of climate change. Until now, there are no solutions available to install high-quality water level measurement on a big scale. You’ll need sensors with non-contact measuring method and that can work without infrastructure, maintenance or any other human intervention.

Developed by SenZ2 BV

Based on the latest single-chip-radar technology SenZ2 managed to develop the first truly wireless water level transmitter that works autonomously. With its noncontacting radar measurement method and water-tight housing it can operate without maintenance for 5 years. Together with a smart connection to SenZ2's secure backend this solution will forces a breakthrough in water level measurement networks and enables water authorities to measure on another level.

TRL8. System incorporated in comercial design
System complete and qualified. Technology has been proven to work in its final form and under expected conditions. In almost all cases, this TRL represents the end of true system development. Examples include developmental test and evaluation (DT&E) of the system in its intended weapon system to determine if it meets design specifications. We already have a lab test set-up from September 2016. Here we tested level measurements for all kinds of liquids and solids, and combinations. We validated the radar measurement technology. Since 3 months we have a mobile prototype sensor available which can be connected to a laptop to test measurement technology in operational environments. In the coming weeks we expect to have our first truly wireless version available for testing. This can be seen as the Golden Copy. Also testing the combination with wireless data transmission in operational environments and settings. When this golden copy is evaluated we can immediately start our 0-serie production (we already have everything in place). The 0-serie devices will be deployed in real-life pilots and demonstration projects. After the 0-serie evaluation, we start with regular production batches, depending on market response and orders. Our online portal is already operational for more than a year, we have already connected other types of sensors and paying customers.

See more information about this level and the TRL and SRL levels.

The main components of the system have been tested separately, and an initial integration exercise has been conducted.

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Collaborators

How does it work?

Installation and operation of the wireless Level radar system is easy: (1)Install sensors above water. Because of small size, sensor will fit in small sewers, or can be hidden under bridge to prevent vandalism; (2)Activate the sensor with a magnet, check on mobile device if the right measurement is communicated, and fill in the height of the sensor relative to the national level. Built in GPS give position automatically; (3)In operation the sensor will work for approx. 5 years without maintenance. The status of the sensor is monitored. When the sensor is moved, batteries begin to empty or other events occur, the end-user is notified; (4)Data is securely stored at SenZ2 servers and can be accessed through SenZ2 online portal and/or API.

Limitations/conditions under which this innovation does not work or is less effective

Because it is a wireless sensor device the only constraints in applications lie in (1)Battery Usage. It is therefore not possible to monitor water levels continuously. With higher sampling rates, the battery-life will shorten. A smart and adaptive measurement strategy (higher sampling rates when precipitation is expected) therefore is needed to gather the most relevant data with the least (battery) energy; (2)Communication Usage: We need at least 2G / GPRS network coverage when the user wants to monitor water levels in (near) real-time. We have chosen (now) for 2G / GPRS because its is the most widely used and rolled out telecom technology available in the world right now. Another option when no 2G / GPRS connectivity is available (for instance inside sewers, deep underground), is to only log measurements locally on the sensor and after a measurement period months/years read out the measurements.

Added value
Its long battery-life, global connectivity and easy installation and setup makes this wireless sensor ideal for use in mobile and remote measurement applications in the water and wastewater sector. This solution fits perfectly in initiatives for expanding existing measurement networks to gain more insights in current water system infrastructures or monitor flooding risks in remote areas where no measuring networks yet exist. The sensor is supported by the MakeSenZ2 Portal with integrated data management functionalities and SenZ2 API for further data integration in third-party information systems Main benefits for the water sector: (1)Reliable and accurate fill-level measurement data, securely stored and available 24/7. (2)Exact measuring results (with radar) independent of water characteristics, process and ambient or weather conditions. (3)Easy to use wireless operations, no infrastructure needed, works out of the box; (4)Five years battery-life and maintenance-free operations; (5)All electronics packed in one watertight, robust and fully submersible housing; (6)Direct insights in sensor data, sensor status, and sensor settings through the online platform. (7)Remote, over the air, configurations, and updates.

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