Wireless temperature measurement system and methods of making and using same
First Claim
1. A system for measuring temperature comprising:
- a transmitter configured to transmit a first RF signal;
a receiver configured to receive a second RF signal;
a signal processor coupled to the receiver; and
a temperature sensor comprising,a dielectric material having temperature-dependent electrical properties;
an antenna disposed at least partially within the dielectric material; and
a diode electrically coupled to the antenna,wherein the temperature sensor is configured to receive the first RF signal and to transmit the second RF signal,wherein the signal processor determines a temperature measurement associated with the temperature sensor based on the second RF signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A temperature measurement system capable of operating in harsh environments including a temperature sensor having an antenna, diode, and dielectric layer disposed on the object of interest is provided, wherein the antenna includes a buried portion that extends through and is electrically coupled to the object of interest, and an exposed portion disposed upon an outer surface of the dielectric layer and the diode is coupled between the object of interest and the exposed portion of the antenna. The antenna is configured to receive interrogating signals from a transmitter, and to transmit response signals corresponding to the resonant frequency of the temperature sensor and its harmonics, which are indicative of the measured temperature of the object of interest. A receiver detects the response signals and correlates the frequency to a known temperature response of the dielectric material. Methods of making and using the temperature measurement system are also provided.
-
Citations
20 Claims
-
1. A system for measuring temperature comprising:
-
a transmitter configured to transmit a first RF signal; a receiver configured to receive a second RF signal; a signal processor coupled to the receiver; and a temperature sensor comprising, a dielectric material having temperature-dependent electrical properties; an antenna disposed at least partially within the dielectric material; and a diode electrically coupled to the antenna, wherein the temperature sensor is configured to receive the first RF signal and to transmit the second RF signal, wherein the signal processor determines a temperature measurement associated with the temperature sensor based on the second RF signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A temperature measurement device comprising:
-
a dielectric material having temperature-dependent electrical properties; an antenna disposed at least partially within the dielectric material, the antenna having a resonant frequency that varies in response to temperature-dependent characteristics of the dielectric material, the antenna configured to receive a first RF signal; and a diode in communication with the antenna, the diode configured to produce a harmonic of the first RF signal in response to receipt of the first RF signal; wherein the antenna is configured to transmit a second RF signal as a function of the harmonic and the resonant frequency of the antenna. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A method of measuring a temperature of an object using a temperature sensor attached to the object comprising the steps of:
-
transmitting a first RF signal to the temperature sensor using a transmitter; receiving the first RF signal with an antenna of the temperature sensor; converting the first RF signal to a second RF signal with the temperature sensor; transmitting the second RF signal to a receiver, the receiver in communication with a signal processor; and determining a temperature associated with the temperature sensor as a function of the second RF signal using the signal processor, wherein the step of converting the first RF signal to the second RF signal comprises producing a harmonic of the first RF signal, and wherein the second RF signal is a function of the harmonic of the first RF signal and the resonant frequency of the antenna. - View Dependent Claims (18, 19, 20)
-
Specification