Virtual fencing system using wireless connectivity

April 6th, 2018, Published in Articles: EngineerIT

Norwegian technology company, Nofence, has selected Nordic Semiconductor’s award-winning nRF52832 Bluetooth low energy (LE) system-on-chip (SoC) for its virtual fencing system, designed to eliminate the need for farmers to maintain physical fences for grazing animals. The virtual fencing system consists of a collar, worn by the animal, incorporating a global navigation satellite system (GNSS) receiver and the nRF52832 SoC. From a map on the Nofence iOS and Android app on a smartphone or tablet, the farmer draws a boundary for the pasture they want the animals to remain within. This data is uploaded to Nofence’s server and transmitted to the collar via a cellular network. Once the collar is fitted to the grazing animal, straying outside the virtual boundary will cause the collar to beep and vibrate, warning the animal to turn back. The position of the animal is tracked using the GNSS receiver, and is relayed to the farmer’s smartphone or tablet. When the animals seek refuge in a barn or shelter, the GNSS receiver is turned off to extend battery life and the Nordic nRF52832 SoC connects using Bluetooth LE to an iBeacon in the shelter to confirm the animals’ location.

Contact Andrew Hutton, RF Design, Tel 021 555-8400,

Related Articles

  • Radar sensor for vehicle detection
  • New series thermal imagers
  • Accurate time takes centre stage
  • Machine learning for microcontrollers and sensors
  • Quantum dots: a technology evolution