Technology overview
GOTposition PG and PS
GOTposition offer two different system architectures - GOTposition PG and GOTposition PS - both using the same patented algorithms, but with different characteristics depending on where the ultrasound is actually emitted from.
The concept is based on a combined ultrasound and radio technology using active senders, and are designed to scale to large indoor areas using additional satellites. The reason why this concept is so succesful can be found in our patented genuine application of ultrasound and our deep understanding of dealing with reflections and hidden vehicles or objects.
GOTposition PG (Ping-from-Ground)
The tracker is the transmitter of the ultrasound signal in this architecture.
All satellites are listening for the ultrasound ping, and report back to the Master via radio (or cable, if required). The Master orchestrates the timing of pings and radio broadcasts and acts as the gateway to your IT-environment where the GOTposition Software and SDK runs. The software computes the position, giving you the opportunity to apply additional filtering, weight functions or transformations if needed. In single-tracker scenarios the Master can be mounted on the robot itself.
This architecture can also be described as a ”reversed-GPS”-architecture.
Characteristics
- Originally designed to be built into small hobby devices such as model trains and cars, so the tracker has a very small physical footprint and low power consumption
- 1, 3 or 5 transducers (senders) per tracker
- Physical size (LxWxH): 60x40x38mm
- Physical print size (LxW) (for OEM systems) : From 60x38mm to 20x15mm
- Radio : 868Mhz or 913Mhz (CE and FCC approved)
- Power : 16-24V
- Communicates by cable or radio (868Mhz or 913Mhz, CE and FCC approved)
- Optimal location : High, 8-15m apart (approx 1 satellite per 70-100 sqm) with line of sight to the work area
- Power : 16-24V
- Maximum distance to farthest Satellite or Tracker: 50m
- Connected to Windows/Linux computer via USB
- Will typically be able to handle up to 12 trackers simultaneously in the same coverage area, of which you can have multiple (24 trackers if satellites are wired)
- Accuracy in good conditions : 10 mm
GOTposition PS (Ping-from-Sky)
Characteristics
- Designed to support a vast number of moving devices in large areas, where each device is more or less autonomous. However, if WiFi is present, the mobile device can report the position to any node in your IT-environment
- Physical size (LxWxH): 87x56x15mm
- Radio : 868Mhz, CE approved (913Mhz, FCC approved, on request)
- Power : 5V
- Communicates by cable or radio (868Mhz or 913Mhz, CE and FCC approved)
- Optimal location : High, ideally 8-15m apart, but up to 25m are feasible
- Power : 16-24V
- Maximum distance to farthest Satellite : 50m
- Connected to computer via USB
- Sampling times are configurable in order to obtain more flexibility on power consumption and bandwidth
- Accuracy : Typical accuracy is between 10 mm and 25 cm depending on the configuration and usage.
The satellites are the transmitters of the ultrasound signals in this scenario. The tracker receives the pings and reports back to a local mobile device via cable (i.e tablet, phone, industrial PC). The tracker receives the pings and the computation of the position is done locally. If needed, you can apply additional filtering, IMU data, weight functions or transformations to the computation.
The Master orchestrates the timing of pings and radio.
This architecture is similar to the way outdoor GPS works.
