Abfragevorrichtung, System mit der Abfragevorrichtung und Programm

Details

Veröffentlichungs-Nr.

EP3239890

Aktenzeichen

EP17156649

Anmeldetag

17. Februar 2017

Veröffentlichung

23. Oktober 2019

Erteilung

23. Oktober 2019

Rechtsraum

EP

IPC

G06K7/10G06K7/00

Abstract

A simple structure determines transmission power that creates a large margin. An interrogation device includes an interrogation unit that interrogates an RF tag in a contactless manner, and a controller that controls the interrogation unit. The controller obtains a signal strength value and an interrogation success rate from a reception signal received by the interrogation unit when controlling the interrogation unit to transmit a signal with transmission power that is being changed in stages (S7, S9), determines changed transmission power corresponding to a signal strength value and an interrogation success rate that are not less than a threshold selectively from a signal strength value and an interrogation success rate obtained in each stage of the transmission power (S13), and outputs information about the determined transmission power (S15).

Anmelder

Firma

OMRON CORPORATION

Land

🇯🇵 Japan

Fachgebiete