US 2020/0371271 A1 · OMNIDIRECTIONAL IDENTIFICATION SENSOR FOR A DEEPLY BURIED NON-METAL POLYMER TUBE

Abstract

The invention relates to an RFID-type transponder for a contactless identification and wireless communication system, intended to affixed to a buried polymer pipe, comprising: an RFID chip; an electronic switching circuit coupled to the RFID chip; a first antenna coupled to the switching circuit, said first antenna having a surface covering a first portion of the external surface of the polymer pipe; and a second antenna coupled to the switching circuit, said second antenna having a surface covering a second portion of the external surface of the polymer pipe, said second portion being different from the first portion. According to the invention, the switching circuit is configured to: couple the first antenna to the RFID chip when the voltage captured at die edge of the first antenna, and corresponding to the magnetic field, by an RFID emitter is greater than the voltage captured at the edge of the second antenna; and couple the second antenna to the RFID chip when the voltage captured at the edge of the second antenna by an RFID emitter is greater than the voltage captured at the edge of the first antenna.

Claims15

Dependent claims

Transponder for a wireless communication and contactless identification system, of the RFID type, intended to be affixed to a buried polymer pipe (10), comprising:

an RFID chip (21, 51);
an electronic switching circuit (20) coupled to said RFID chip;
a first antenna (1 1, 51) coupled to said switching circuit, said first antenna (11) having a surface covering a first part of the outer surface of said polymer pipe (10);
a second antenna (12, 52) coupled to said switching circuit, said second antenna (12, 52) having a surface covering a second part of the external surface of said polymer pipe, said second part being distinct from said first part;
wherein said switching circuit (20) is configured to:
couple said first antenna to said RFID chip when the voltage sensed at the edge of said first antenna and corresponding to the magnetic field by an RFID transmitter is greater than the voltage sensed at edge the second antenna;
couple said second antenna to said RFID chip when the voltage sensed at the edge of said second antenna by an RFID transmitter is greater than the voltage sensed at the edge of the first antenna.

4 more elements

Transponder for a wireless communication and contactless identification system, of the RFID type, intended to be affixed to a buried polymer pipe (10), comprising:

a first RFID chip (61) associated with a first antenna (60) said first antenna having a surface covering a first part of the outer surface of said polymer line;
a second RFID chip (71) associated with a second antenna (70), said second antenna having a surface covering a second part of the external surface of said polymer pipe, said second part being distinct from said first part;
wherein said first RFID chip (61) includes a storage configured to store a field allowing the storage of an identification element, UID, of said second RFID chip (71);
wherein said second RFID chip (71) includes a storage configured to store a field allowing the storage of an identification element, UID, of said first RFID chip (61);
wherein the identification element of the first RFID chip (61) and the identification element of the second RFID chip (71) are used to enable a surface detector to determine that the two RFID chips belong to a same buried polymer pipe.

2 more elements

Dependencies are inferred from the claim text.

Omnidirectional identification sensor for a deeply buried non-metal polymer tube

Life of this patent

Omnidirectional identification sensor for a deeply buried non-metal polymer tube

Life of this patent

Abstract

Claims15