A system includes a structure configured to have a structure bonding layer disposed on a surface of the structure. The structure bonding layer is a metallic alloy. The system includes a sensor configured to have a sensor bonding layer disposed on a surface of the sensor. The sensor bonding layer is a metallic alloy. The sensor bonding layer is configured to be coupled to the structure bonding layer via a metallic joint in order for the sensor to sense data of the structure through the metallic joint, the structure bonding layer, and the sensor bonding layer.

A sensor system includes one or more rotor antennas on a shaft that moves within a stator bracket one or more of around an axis of the sensor system or along the axis of the sensor system, the one or more rotor antennas configured to communicate sensed data with one or more stator antennas on the stator bracket. Each rotor antenna has a rotor signal trace disposed on an outer rotor side of a dielectric substrate of the rotor antenna and a rotor return trace disposed on the outer rotor side of the dielectric substrate, wherein the rotor signal trace and the rotor return trace are not concentric with respect to each other. The one or more rotor antennas are configured to extend one or more of radially around an outer surface of the shaft of a sensor or along the outer surface of the shaft of the sensor.

A method for optimizing the design of a device includes interrogation means and a differential passive sensor, including a generator connected directly or indirectly to a reader antenna, a passive sensor including at least two resonators, a sensor antenna connected to the sensor. The method includes determining a set of curves P.sub.SAW as a function of the frequency of interrogation of the sensor, each curve being defined for a given impedance Z.sub.T representing the impedance of the Thevenin equivalent generator dependent on the impedance of the reader antenna, on the impedance of the sensor antenna and on the coupling between the two antennas, for a given sensor impedance Z.sub.SAW; selecting at least one curve P.sub.SAW from the set of predefined curves meeting two criteria: exhibiting two frequency peaks representative of a coherent differential sensor behavior; having a width at mid-height of the two the peaks below a threshold value; and determining the sensor antenna exhibiting the sensor antenna impedance correlated to the curve P.sub.SAW selected for the predefined SAW sensor.

A patch-type passive acoustic waving sensing device includes a surface acoustic wave sensor and at least a first and second rubber sheets. A cross-section of each of the first and second rubber sheets is larger than that of the surface acoustic wave sensor. A bottom of the surface acoustic wave sensor is on an upper surface of the first rubber sheet, and a first central hole allowing the surface acoustic wave sensor to penetrate therethrough is formed in a center of the second rubber sheet. The surface acoustic wave sensor penetrates the first central hole, and the second rubber sheet is fixedly connected to the upper surface of the first rubber sheet. The surface acoustic wave sensor includes pins at the bottom thereof such that free ends of the pins are connected to an antenna, and the antenna and some of the pins are inside the first rubber sheet.

A thermal sensor circuit comprises a conversion circuit which is one of a buck DC-DC converter circuit and a boost DC-DC converter circuit, wherein the conversion circuit comprises an inductor and an output terminal. A thermal sensor senses a thermal variation correlated to a capacitance variation of the thermal sensor. The capacitance variation induces an internal parasitic capacitance variation of the inductor which is connected in parallel to the thermal sensor and results a variation of an energy stored in the inductor. Hence a variation of a converted circuit signal outputting by the output terminal is caused, wherein the variation of the converted circuit signal is correlated to the thermal variation.

The present invention relates to a temperature detection assembly (10) for a cooking pot (24). Said temperature detection assembly (10) comprises a straight and elongated bar (12), at least one SAW (surface acoustic wave) temperature sensor (10) arranged inside a lower end portion of the bar (12), a sensor antenna (16) connected to an upper end of the bar (12), and at least one handle (18) connected to the upper end of the bar (12). The SAW temperature sensor (10) or a heat conducting element connected to said SAW temperature sensor (10) is spaced from a lower end of the bar (12) by a predetermined distance, wherein a non-heat-conducting material is arranged between the SAW temperature sensor (10) or the heat conducting element, respectively, and the lower end of the bar (12). Further, the present invention relates to a lid (20) for a cooking pot (24), wherein the lid (20) is provided for receiving a temperature detection assembly (10) with a straight and elongated bar (12). The lid (20) comprises an elongated guide tube (22) for receiving the bar (12) of the temperature detection assembly (10), wherein an outer diameter of the bar (12) is marginally smaller than an inner diameter the guide tube (22).

Disclosed is a wireless temperature measurement apparatus using a SAW device which calculates a temperature by detecting a change in resonance frequency, the resonance frequency being physically changed by a temperature. The apparatus includes: a surface acoustic wave (SAW) device including an inter-digital transducer (IDT) generating a surface acoustic wave and a reflector reflecting the surface acoustic wave and outputting the wave to an antenna, wherein the surface acoustic wave is physically deformed by a temperature change, and a reader generating a transmitting signal within a set frequency band and transmitting the signal to the SAW device, detecting an amplified resonance frequency signal which matches a deformed surface acoustic wave, the deformed surface acoustic wave being one of the reflected waves and being physically deformed by the temperature change, and detecting a temperature of the SAW device by comparing the amplified resonance frequency with a preset frequency.

Provided are a sensor package and a sensor package module. The sensor package includes: a substrate including a sensing area; a terminal portion disposed on a side of the sensing area of the substrate and including at least one terminal connected to the outside; a first outer wall disposed on the substrate and including a main wall surrounding at least some outer portions of the sensing area; at least one wire patterned and disposed on the substrate and configured to connect the sensing area and the terminal portion to each other; and a cover disposed on the first outer wall to correspond to the sensing area. Part of the main wall is disposed between the sensing area and the terminal portion, and the main wall includes an opening through which the at least one wire passes.

An apparatus and method for real-time in-situ simultaneous measurement of temperature and mechanical parameters can include a charge type vibration sensing module having a temperature compensation function and a temperature/vibration coplanarly-integrated wireless surface acoustic wave (SAW) sensing module are controlled by a processing module in which a full-range temperature-vibration composite parameter compensation decoupling method is implanted, which can detect a vibration signal in a variable temperature environment. Moreover, temperature and vibration multi-parameter testing of static components in a high-temperature, narrow and closed environment can be implemented by arranging the charge type vibration sensing module having a temperature compensation function, and the temperature/vibration coplanarly-integrated wireless SAW sensing module implements health monitoring of moving components in a high-temperature and high-rotation environment.

A method of interrogating an acoustic wave sensor comprises transmitting, by an interrogator, an interrogation radiofrequency signal to the acoustic wave sensor by way of a transmission antenna, receiving, by the interrogator, a response radiofrequency signal from the acoustic wave sensor by way of a reception antenna, and processing by a processing means of the interrogator the received response radiofrequency signal to obtain in-phase and quadrature components both in the time domain and the frequency domain, determining by the processing means perturbations of the obtained in-phase and quadrature components both in the time domain and the frequency domain and determining by the processing means a value of a measurand based on the detected perturbations.