Time-of-Flight level monitoring devices for silos, waste and more
Out with the old. In with the ToF.
Mohamed Fall, GreenSysTech CEO explains, “Having grappled with the constraints of more traditional level monitoring devices we were pleased to discover Terabee and their TeraRanger Evo distance sensors. We conducted some initial tests and quickly realized the potential of their technology. For the first time, we could accurately measure fill-levels in silos of 11 meters depth, with good accuracy and with power consumption levels that make battery power a viable option.” GreenSysTech chose to use the TeraRanger Evo 60m sensor, integrating this into their dust and water protected (IP65 rated), plug and play level monitoring device. Fall goes on to explain, “Unlike other optical devices, we found the TeraRanger Evo sensor to be less sensitive to dust and other deposits. We also preferred the fact it uses LED emitters rather than a laser. This means the sensor measures distance over a small area, rather than the pin-point of a laser and for our application provides a more accurate measurement. It also means that our device is eye-safe without having to consider laser Class 1 certification.”
Whilst initially built for deep silo level monitoring, the device can be applied to numerous applications where level-monitoring is important, including smart waste management, water level management, inventory level tracking, and replenishment and some oil industry applications.
As well as fill-level data, the GreenSysTech level monitoring device provides other vital statistics (temperature, humidity, etc), communicates over LoraWan, runs on two 3V lithium manganese batteries and can achieve battery autonomy between 4 and 8 years! (4 years is based on 1 measurement and transmission every 6 hours. 8 years is for 1 measurement every 12 hours and 1 transmission every 24 hours). Measurement frequencies can be changed with simple Over The Air (OTA) commands and interfaces for other comms standards, such as Sigfox are possible.