Local Positioning System

How It Works

Position Determination

In the GPS satellite navigation system, the receiver calculates its current position by measuring the distance to several transmitters.

The LPS from Sarissa works differently: Several transmitters send their ultrasound signals from the wrist of a worker, a screwdriver or workpiece carrier into the work environment. Based on the run time of the signals, the receiver unit then calculates the exact position of each individual transmitter.

Ultrasonic Sensory Analysis

The performance and precision of the LPS exceeds by far common distance measurement technology, for example, the kind used in the parking sensors of cars.

The LPS is capable of identifying, locating the associated transmitter, and determining its position within millimeter-precision. With an accuracy of ± 1 mm, the spatial coordinates of the transmitter can be recorded and processed by the QualityAssist system or transmitted from the PositionBox in real-time.


Utilizing the main functionality of the LPS, a large number of industrial applications are possible:

What & Who? What tool, which worker?

Which zone? Which workpiece, in what area?

Where, exactly? Which screw, in what position?