A -12.3 dBm UHF Passive RFID Sense Tag for Grid Thermal Monitoring

Bo Wang, Man Kay Law, Jun Yi, Chi Ying Tsui, Amine Bermak

Research output: Contribution to journalArticle

Abstract

This paper presents an ultra-high-frequency (UHF) passive sense tag for electrical grid and substation thermal monitoring, with emphasis on the tag system optimization and the design of a low power embedded temperature sensor. The designed tag achieves a sensitivity of -12.3 dBm under active temperature monitoring operation, which is the state of the art among existing UHF passive temperature sense tag products. The sensing inaccuracy of the tag is ±2.5 °C (3σ) from -25 to 120 °C after a low-cost wireless single-point trim. An antimetal ceramic-packaged tag was tested by attaching to a ring main unit in the substation and complete tag system demonstrated robust wireless operation with a sensing distance of 3.5 m. The combination of batteryless and wireless operation, high sensitivity, wide sensing range, and small incident-power-dependent error (±0.2 °C) makes this tag suitable for the target applications.

Original languageEnglish
Article number8611307
Pages (from-to)8811-8820
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume66
Issue number11
DOIs
Publication statusPublished - 1 Nov 2019

Fingerprint

Radio frequency identification (RFID)
Monitoring
Temperature sensors
Temperature
Hot Temperature
Costs

Keywords

  • Antimetal antenna
  • CMOS temperature sensor
  • grid thermal monitoring
  • radio-frequency identification tag (RFID) temperature sense tag
  • relaxation clock generator
  • ultra-high-frequency (UHF) RFID

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

A -12.3 dBm UHF Passive RFID Sense Tag for Grid Thermal Monitoring. / Wang, Bo; Law, Man Kay; Yi, Jun; Tsui, Chi Ying; Bermak, Amine.

In: IEEE Transactions on Industrial Electronics, Vol. 66, No. 11, 8611307, 01.11.2019, p. 8811-8820.

Research output: Contribution to journalArticle

Wang, Bo ; Law, Man Kay ; Yi, Jun ; Tsui, Chi Ying ; Bermak, Amine. / A -12.3 dBm UHF Passive RFID Sense Tag for Grid Thermal Monitoring. In: IEEE Transactions on Industrial Electronics. 2019 ; Vol. 66, No. 11. pp. 8811-8820.
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