×

Wireless sensor for thermal property with thermal source

  • US 10,102,469 B2
  • Filed: 01/03/2018
  • Issued: 10/16/2018
  • Est. Priority Date: 11/07/2014
  • Status: Active Grant
First Claim
Patent Images

1. A radio frequency identification (RFID) tag adapted to wirelessly communicate with a remote transceiver, comprising:

  • a substrate;

    an antenna disposed on the substrate;

    an electronic circuit disposed on the substrate and electrically coupled to the antenna, the electronic circuit comprising one or more of a transistor, a diode, a resistor and a capacitor;

    a heating element electrically coupled to the electronic circuit for heating a target area; and

    a sensing element thermally coupled to the heating element for sensing a temperature of the heating element, such that when the heating element is thermally coupled to the target area, the RFID tag wirelessly receives a first power having a first form from a transceiver, the electronic circuit transforms the first power to a second power having a second form different from the first form and delivers the second power to the heating element, the sensing element senses a time variation of the heating element temperature, and the RFID tag wirelessly transmits to the transceiver a thermal characteristic of the target area based on the sensed time variation of the heating element temperature,wherein the thermal characteristic of the target area wirelessly transmitted to the transceiver includes at least one of a thermal conductance of the target area, a thermal resistance of the target area, a thermal conductivity of the target area, a thermal diffusivity of the target area, and a heat capacity of the target area.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×