Real-time Location (RTLS) / RFID
  • Personnel tracking
  • Assets tracking
  • Work in process tracking
  • Positioning accuracy to 0.3 m

Real-time Location (RTLS) / RFID

 

Real time location systems (RTLS) provide visibility of and control over assets and processes in environments where objects are constantly on the move. By precisely and reliably locating assets, RTLS solutions can map location to process steps, answering critical questions such as “Where are my assets?” and “Is my business operating efficiently?” Offering a window into any organization, RTLS solutions go beyond the traditional definition of a “real-time location system” to a new class of “process improvement and control.” Knowing exact position of tool, vehicle, container or personnel gives incredible possibilities for process improvement and reaching highest automation level.

There are many different types of real time positioning systems starting with well-known global positioning system (GPS) allows reaching 10 to 1 meter accuracy. Differential GPS reaches accuracy 10 meter to 10 centimeter in case of the best implementations.

A technique that promises much is UWB (ultra wide band). Using a very broad frequency band gives the advantage that the signal is subject to much lower fluctuations, because these involve only a small portion of the frequency band for the location. This gives advantages among the previous IEEE 802.11 standards, where only a narrow frequency band was used. UWB RTLS systems allow reaching locating precision of 30 centimeters in 3D coordinates.

Using WiFi networks for positioning is highly escalated nowadays, but analytical reports states that best possible accuracy in WiFi network can be up to 1-3 meters in 3D coordinates and 100% floor/room level occupancy.

 

RFID technology
 
Ultra high frequency UHF radio frequency identification RFID technology is used for automatic identification of objects, moving close to the RFID reader or through RFID gates. UHF technology allows reaching reading ranges to 30 meters with passive tags. Typical reading range of balanced tags is 2 to 6 meters – that is enough to identify and track any kind of tagged object, like:
 
Car, truck or trailer;
Wagon, platform or container;
Reach stacker, fork lift or other heavy duty transport item;
Tools, IT assets and work in progress items;
People;
Pallets, boxes and products.