Technologies
Locate Anywhere, Any Time
A Unique Solution
Purelink's Real-Time Location System (RTLS) represents a robust and entirely
wireless tracking and visibility infrastructure. It has been designed with the
most demanding applications and logistic operations in mind.
Purelink's advanced RFID and RTLS solutions are the most cost-effective on the
market today. They allow us to provide our clients and partners with low-cost,
high-precision asset location systems offering significant benefits including
increased efficiency and revenue. Our suite of products provides turnkey
real-time visibility solution using the world's smallest active RFID tag for
RTLS application on the market. Our multiple patent-pending positioning
technology can track and locate thousands of assets in any kind of environment,
including harsh, difficult industrial and commercial environments.
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5.8 GHz, Best Frequency Band for Low-cost, High-accuracy Real-time Location Systems
The use of higher frequencies for location-based applications such as people and equipment
tracking presents multiple advantages compared to other frequencies.Location systems built on higher
frequencies provide lower costs per device, high data rate transfers between badges/tags and receivers.
As well, they offer the best compromise between communication range and shorter signal wavelengths to
improve the ability to pass through narrow spaces in harsh environments. By way of signal leakage,
they can easily find their way through dense metallic environments. They offer small device sizes
with unmatched efficiency for Real-Time Location Systems (RTLS) and active RFID. The physics of
wireless technology shows 4 main factors affecting communication quality and system performance:
- Traffic in the band
- Propagation issues or how the frequency handles obstructions and distances
- Frequency efficiency
- Device efficiency
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RFID WiFi tracking requires more access points
The main advantage claimed by Wi-Fi tracking providers is that you can use your
existing WiFi infrastructure for tracking, therefore minimizing deployment costs. However, typical WiFi
networks for voice or data are not deployed in a manner that accommodates tracking. In order to locate a
device by triangulation, it must remain in contact with a minimum of 3 access points at all times.
To convert an existing WiFi infrastructure so that it can be used as a WiFi RFID tracking network, it needs to be extensively modified
and a substantial number of wired access points must be added. This leads to problems, as optimisations for voice and data transmissions
are not compatible with those of RFID tracking. In addition, channel management issues for non‑overlapping coverage and heavy roaming
problems arise, due to the high density of access points in a small environment.
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The nanoEdgeTM Tracking
System is built on a Digital Impulse Location System. Impulse radio has been
used for decades in military communications and is fundamental to radar technology.
DILS uses short RF impulse signals modulated both in time and frequency to reliably
transmit information over long distances. By precisely modulating nanosecond-resolution
radio frequencies in both the time and frequency domains, fine temporal measurement of
the signal propagation becomes possible.
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