Tell me the technology for determining the position in the building

Question

satellite navigation

Hello. There is a need to determine the position of the loader in a large warehouse building. GPS does not catch because of the concrete roof. Are there any solutions to determine the position. Can wifi be enabled?

Answer 1

This technology is based on triagulation. In general, there are not many ways to transmit a signal either: GPS-based. There is no need to explain here. Expensive, not accurate enough, poor indoor signal strength. There should always be a suitable number of satellites in the coverage area. Of the advantages - widespread, coverage of large areas (for example, a factory area). Cellular based. The signal is the power of the nearest BS of mobile phone operators. Pluses in simplicity, minuses - accuracy (50-200m). Again, the signal strength depends on the room. Pros - Global scope (smaller than GPS, but more accurate indoors) RFID. Radio identification tags have a short range (1-2 m for passive tags, tens of meters for active tags), but this may be quite enough to put one on every office desk. Passive tags do not consume energy, they respond only to the received signal. WLAN (IEEE 802.11). Identification using WiFi transmitters. No need to introduce new equipment if it is already in use. Pretty good accuracy. Suitable for places with developed infrastructure (university, for example, issue a tag to each student and monitor attendance) Bluetooth (IEEE 802.15). Everything is better with bluetooth. Considering the spread of this technology in most mobile phones. Shorter range compared to WiFi. UWB - Ultra Wide Band. The technology is very similar to RFID, only it operates at frequencies of 3.1-10.6 GHz, versus 0.1-1000 MHz for RFID. It also uses a different pulse exchange technology (sends short signals at several frequencies at once). UWB tags consume less power than RFID IR. Transmitters based on infrared radiation. They provide fairly high accuracy, but require a direct line of sight of the object of observation

Technology description here http://blog.scaytrase.ru/algorithms/187/

The technology is already working: Example Example Example

But I didn’t find something on the domestic market of integrations (

Answer 2

I don't think wifi is an option either. If this is a warehouse, and there is probably a lot of different iron, the signal can be very distorted. As an option - just put cameras or motion sensors at the nodes (crossroads) of the warehouse and determine the coordinates from them.

Answer 3

Maybe iBeacons will help. Based on Bluetooth 4.0. Of course, accuracy is not good for navigation, but that's it for orientation.

Answer 4

There are Motorola technologies for determining the location inside the premises using their own walkie-talkies with special expansion boards and beacons placed around the building. You can start from here

Answer 5

Cisco has location technology specifically for these conditions:
http://www.cisco.com/en/US/solutions/ns340/ns414/ns742/ns820/landing_loc_svcs.html
Based on WiFi triangulation. Promise 10m accuracy 90% of the time.
But it requires a large number of access points, a controller, software, a mobility server, competent settings, and is very expensive.