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1. (WO2017152852) SYSTEM AND METHOD OF DETECTION OF OBJECT MADE WITH ELECTRICALLY POORLY CONDUCTIVE MATERIAL

Pub. No.:    WO/2017/152852    International Application No.:    PCT/CN2017/076088
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 10 00:59:59 CET 2017
IPC: G06K 19/07
Applicants: SHI, Zheng
Inventors: SHI, Zheng
Title: SYSTEM AND METHOD OF DETECTION OF OBJECT MADE WITH ELECTRICALLY POORLY CONDUCTIVE MATERIAL
Abstract:
An object (1) that can be simultaneously detected by a capacitive sensor (9) and an RFID reader (10), an object detection system and the accompanying method are provided. The object (1) includes a body (2) made partially or entirely with an electrically poorly conductive material (3), and an RFID tag (4) embedded in the body (2). The object detection system includes a processor (8), the object (1), the capacitive sensor (9), and the RFID reader (10). Once the object (1) is placed within the detection range of the capacitive sensor (9), the capacitive sensor (9) detects the object (1) through capacitive coupling, and transmits the detected information to the processor (8). And once the object (1) is placed within the detection range of the RFID reader (10), the RFID reader (10) transmits an RF signal that passes through the electrically poorly conductive material (3) to reach the RFID tag (4), detects the RFID tag (4), and transmits the detected information to the processor (8). The RFID reader (10) detects the object (1) before, during or after the capacitive sensor (9) detects the object (1). The system can enhance capacitive coupling between the object (1) and the capacitive sensor (9) and reduce shielding of radio frequency identification, and thus improve the detection sensitivity.