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1. WO2022003613 - LIQUID DETECTION RFID TAG ARRANGEMENT

Publication Number WO/2022/003613
Publication Date 06.01.2022
International Application No. PCT/IB2021/055901
International Filing Date 01.07.2021
IPC
G06K 19/07 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards
07with integrated circuit chips
G06K 19/077 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards
07with integrated circuit chips
077Constructional details, e.g. mounting of circuits in the carrier
G06K 19/073 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards
07with integrated circuit chips
073Special arrangements for circuits, e.g. for protecting identification code in memory
Applicants
  • DIGITAL TAGS FINLAND OY [FI]/[FI]
Inventors
  • HUHTASALO, Lauri
Agents
  • PAPULA OY
Priority Data
2050830-502.07.2020SE
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) LIQUID DETECTION RFID TAG ARRANGEMENT
(FR) ENSEMBLE ÉTIQUETTE RFID POUR LA DÉTECTION DE LIQUIDE
Abstract
(EN) A liquid and/or moisture detecting RFID tag arrangement (1) comprises a substrate (4, 4'), at least one antenna element (2) arranged on the substrate, and an RFID chip (3) connected to the antenna element(s). At least a part of the substrate forms a water degradable part (4), made of a water degradable material, arranged to dissolve or disintegrate when wetted by a liquid. When the water degradable part disintegrates or dissolves, the response signal from the RFID tag arrangement (1 ) changes, either to cease, or to be of different content or characteristics. The change in response signal can e.g. be accomplished by a main antenna (2) becoming totally or partly inoperative, by a secondary antenna (5) becoming fully or partly inoperative, or by breaking a detection loop (5').
(FR) Ensemble étiquette RFID (1) pour la détection de liquide et/ou d'humidité, comprenant un substrat (4, 4'), au moins un élément d'antenne (2) disposé sur le substrat et une puce RFID (3) connectée à l'élément ou aux éléments d'antenne. Au moins une partie du substrat forme une partie dégradable dans l'eau (4), constituée d'un matériau dégradable dans l'eau et conçue pour se dissoudre ou se désintégrer lorsqu'elle est mouillée par un liquide. Lorsque la partie dégradable dans l'eau se désintègre ou se dissout, le signal de réponse provenant de l'ensemble étiquette RFID (1) change, soit pour cesser, soit pour être de contenu différent ou de caractéristiques différentes. Le changement de signal de réponse peut, par exemple, être accompli par une antenne principale (2) devenant totalement ou partiellement inopérante, par une antenne secondaire (5) devenant totalement ou partiellement inopérante, ou par rupture d'une boucle de détection (5').
Latest bibliographic data on file with the International Bureau