Wiliot IoT Pixels use the energy that propagates in space through Radio Frequency waves. Specifically, we harvest Bluetooth, Wi-Fi and other 2.4 GHz connectivity technologies from devices such as Bluetooth to Wi-Fi Gateways and BLE-enabled Wi-Fi APs. Other versions of the Wiliot IoT Pixel are dual-band, meaning they will harvest from 2.4 GHz and 800/900 Mhz. The specific bands supported are a function of the design of the harvesting antennae.
Depending on the solution, Wiliot IoT Pixels can harvest from many different devices and sources that generate the RF. In many Wiliot Solutions, energy is obtained by Bridges and Gateways. We use a 'Three Tier Architecture'- it goes as follows:
1. Pixels can be on items or containers
2. Bridges are low cost devices that extend range, allow transmissions from many tags to be filtered to Gateways. They:
- Energize – Providing energy for Wiliot Pixels to harvest
- Read – Recognizing Wiliot Pixel data packets and forwarding them to the Wiliot Cloud
- Repeat – Select & repeat amplified Bluetooth broadcasts to Gateways
3. Gateways – Relay from Bluetooth to WAN
Bridges and Gateways work with the Wiliot cloud to manage traffic & energy intelligently
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