Publication

Application of a Low Frequency, Low Power Radio Frequency Positioning System for Real Time Indoor Positioning

Yves Perriard
2020
Posters

Abstract

This paper focuses on the design and application of low power and low-frequency localization system using received signal strength indication (RSSI). The receiver will wake up from sleeping mode by a modulated magnetic field emitted from a transmitter module. Then it will send messages containing the Received Signal Strength Indication (RSSI) via WiFi with Message Quest Telemetry Transport (MQTT) protocol to an MQTT broker. Using the magnetic coupling effect and RSSI ranging, the system is a unique candidate for low power security-positioning purposes.

Official source

https://infoscience.epfl.ch/entities/publication/a9f33fc3-6c15-4251-9699-f9d8041b6396

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Yves Perriard
2020
Posters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/a9f33fc3-6c15-4251-9699-f9d8041b6396

About this result

Related concepts (32)

Indoor positioning system

An indoor positioning system (IPS) is a network of devices used to locate people or objects where GPS and other satellite technologies lack precision or fail entirely, such as inside multistory buildings, airports, alleys, parking garages, and underground locations. A large variety of techniques and devices are used to provide indoor positioning ranging from reconfigured devices already deployed such as smartphones, WiFi and Bluetooth antennas, digital cameras, and clocks; to purpose built installations with relays and beacons strategically placed throughout a defined space.

Low frequency

Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz. Since its wavelengths range from 10–1 km, respectively, it is also known as the kilometre band or kilometre wave. LF radio waves exhibit low signal attenuation, making them suitable for long-distance communications. In Europe and areas of Northern Africa and Asia, part of the LF spectrum is used for AM broadcasting as the "longwave" band. In the western hemisphere, its main use is for aircraft beacon, navigation (LORAN), information, and weather systems.

Real-time locating system

Real-time locating systems (RTLS), also known as real-time tracking systems, are used to automatically identify and track the location of objects or people in real time, usually within a building or other contained area. Wireless RTLS tags are attached to objects or worn by people, and in most RTLS, fixed reference points receive wireless signals from tags to determine their location. Examples of real-time locating systems include tracking automobiles through an assembly line, locating pallets of merchandise in a warehouse, or finding medical equipment in a hospital.