Various systems for monitoring wheeled vehicles (such as shopping carts) are disclosed. The system can include an RF antenna unit that is buried and is configured for bi-directional communication with the electronics on the cart. In some embodiments, the antenna comprises a plurality of transmitters, which can emit synchronized signals. In some embodiments, the antenna comprises a radiating cable, which can emit a signal along some, substantially all, or all of its length.
L'invention concerne divers systèmes servant à surveiller des véhicules à roues (comme des chariots à provisions). Le système peut comprendre une unité d'antenne RF qui est enterrée et qui est configurée à des fins de communication bidirectionnelle avec l'électronique sur le chariot. Dans certains modes de réalisation, l'antenne comporte une pluralité d'émetteurs, qui peuvent émettre des signaux synchronisés. Dans certains modes de réalisation, l'antenne comporte un câble rayonnant, qui peut émettre un signal le long de certains, de sensiblement la totalité, ou de la totalité de sa longueur.
SYSTEMS WITH BURIED ANTENNAS FOR BI-DIRECTIONAL COMMUNICATION WITH WHEELED VEHICLES
SYSTEMES A ANTENNES ENTERREES A DES FINS DE COMMUNICATION BIDIRECTIONNELLE AVEC DES VEHICULES A ROUES
2023-05-02
Patent
Electronic Resource
English
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