55results about "Material analysis using microwave means" patented technology

A method for determining a property of a variable coating (VB) in a measuring tube (MR), comprising at least the following steps: emitting an excitation signal (ES) using a first microwave antenna (MA1), wherein the excitation signal (ES) comprises a sequence of radio frequency signals; receiving a transmission signal (TS) emanating from the excitation signal (ES) using a second microwave antenna (MA2); receiving a reflection signal (RS) emanating from the excitation signal (ES) using the first microwave antenna (MA1); determining a first test quantity (P1) based on the received transmission signal (TS); determining a second test quantity (P2) based on the received reflection signal (RS); determining the property of the variable coating (VB) based on the first test quantity (P1) and based on the second test quantity (P2).

The invention relates to a microwave sensor (2) for detecting at least one target gas, the sensor comprising: a substrate (4); a microwave device (5) printed on the substrate (4) and having a deposition opening (7); and a liquid substance (8) sensitive to the at least one target gas, the liquid substance (8) being arranged in the deposition opening (7) so as to be in contact with the microwave device (5), the liquid substance (8) being a deep eutectic solvent and chosen such that the presence of the at least one target gas causes at least one of a change in the dielectric characteristics or a change in the electrical characteristics of the liquid substance (8), resulting in a change in the distribution parameters of the microwave device (5).

The present disclosure relates to an observation unit, a traveling wave tube unit, and an observation method. An observation unit includes a housing having a vacuum inside, a base housed in the housing and fixed to the housing, and an observation device housed in the housing and supported by the base, wherein the base includes a first magnet, and the observation device includes a second magnet mounted so as to repel the first magnet and supported in a state of being separated from the base.

Systems, methods, and computer readable memory are disclosed for constructing a three-dimensional tomogram using a gravity-fed tomography system. A gravity-fed tomography system may generate a three-dimensional image through a barrier. The system may include a chute. The chute may be configured to receive a three-dimensional object having x-, y- and, z-dimensions. The chute may be configured to be non-perpendicular to a gravitational vector such that gravity facilitates movement of the object through the chute. The system may include one or more sources. The sources may emit electromagnetic radiation toward the object when the object is disposed in the chute. The system may include one or more receivers, which may receive at least a portion of the electromagnetic radiation emitted by the one or more sources.

Embodiments of the present application provide a resonant cavity sensor, a substance measuring device and a substance measuring device determination method, wherein the resonant cavity sensor comprises a containing cavity, a microwave resonant cavity and a microwave detector; the microwave resonant cavity comprises a first connecting end, a second connecting end and a channel connecting the first connecting end and the second connecting end; the containing cavity is arranged in the channel; the microwave detector is used to send a microwave signal to the microwave resonant cavity, receive and detect a resonant signal in the microwave resonant cavity; wherein the resonant signal is used to detect the substance content of a to-be-measured substance; wherein the first connecting end is provided with a first connecting part, and the second connecting end is provided with a second connecting part; the first connecting part and the second connecting part are configured to be connected with an external pipeline.

Provided is a reflectance coefficient measuring device comprising: antenna units (110, 111); an open unit (112); a short unit (113); a load unit (114); a switch (12a); and a reflectance coefficient measuring unit that controls the switch (12a) to sequentially connect the antenna units (110, 111), the open unit (112), and the short unit (113) to its port and measure respective reflectance coefficients. The reflectance coefficient measuring unit controls the switch (12a) to sequentially connect the short unit (113), the open unit (112), and the load unit (114) to its port to perform respective reflection measurements, and performs calibration on the basis of measurement results to remove measurement errors of reflectance coefficients.

A manufacturing method is provided. During this method, a preform component (60') for a turbine engine is provided that includes a substrate (74). A meter section (102) of a cooling aperture (64) is formed in the substrate (74'). An external coating (76',78') is applied over the substrate. At least a portion of the substrate (74') and the external coating (76',78') is scanned with an imaging system (156) to provide scan data indicative of an internal structure of the portion of the substrate (74') and the external coating (76',78'). A diffuser section of the cooling aperture is formed in the external coating (76',78') and the substrate (74') based on the scan data.

The present application relates to the technical field of recycling of asphalt mixture, and particularly relates to a mixing uniformity monitoring method suitable for recycled asphalt mixture, comprising the following steps: S101, a dual-mode sensor of infrared thermal radiation field dynamic capture and microwave dielectric characteristic synchronous monitoring is used, and the dual-mode sensor is spatiotemporally fused to jointly perform mixing defect alarm; S102, based on the infrared thermal radiation field dynamic sequence, the particle motion consistency is judged through the standard deviation of the motion direction angle, the infrared temperature field and the microwave dielectric data are integrated, a three-dimensional feature vector is constructed, the uniformity is comprehensively evaluated through a weighted function, the defect is judged according to the maximum contribution item, and an optimization instruction is generated; S103, a grading standard is set up based on the multi-modal features, and the process is adjusted according to the grading result feedback. The present application combines infrared thermal radiation and microwave dielectric characteristics, synchronously evaluates temperature uniformity and material component distribution, and solves the monitoring problem that the uniformity of recycled asphalt heat is not equal to the uniformity of components.

A characterization system (1) for characterizing a material or substance of an object or moving body, comprising a measuring chamber (12) having a reflective wall (3) capable of reflecting radar waves and a support wall on which a radar wave transmitter / receiver device (5) is mounted, wherein the reflective wall has a general concave channel shape and a principal cross-section that passes through the radar wave transmitter / receiver device and is inscribed in an ellipse having a first focus (81) and a second focus (82), and an axis of the ellipse (80) passing through the first and second focuses; and the first focus is positioned on the radar wave transmitter / receiver device and the second focus is positioned inside the reflective wall. Abstract figure: Figure 8

An agricultural system with an agricultural harvester has a terahertz sensor. The terahertz sensor includes at least one a terahertz source disposed to direct electromagnetic radiation toward a harvest material of the agricultural harvester. A terahertz detector is disposed to detect the terahertz electromagnetic radiation after the terahertz electromagnetic radiation interacts with the harvest material. A controller is operably coupled to the terahertz detector and is configured to detect a harvest-related parameter based on a signal from the terahertz detector and to perform an action based on a detected parameter.

A method for automatically selecting a mapping function (AF) from a set (MAF) of at least two predefined mapping functions for a measuring instrument, wherein the measuring instrument is configured to acquire a measured value of a process measurement of a medium (ME), wherein the mapping function (AF) describes a functional relationship between at least one auxiliary measurement (HG) and a measurement derived from the process measurement; wherein the method comprises at least the following steps: determining at least one first measured value (ME1) of a first decision measurement (E1); determining at least one first measured value (ME2) of a second decision measurement (E2); determining a relationship (B) between the measured values ​​(ME1, ME2) of the decision measurements (E1, E2); selecting a mapping function (AF) depending on the relationship (B).

Provided are a system, method, and device for renewable energy usage within a network. According to embodiments, the system can include a memory storage storing computer-executable instructions, and at least one processor communicatively coupled to the memory storage, wherein the at least one processor is configured to execute the instructions to identify one or more network resources using a renewable energy source; and calculate an energy consumption value for a user using the identified one or more network resources.

Method for measuring the fill level (L) of a fill material (1) in a container (3) using an FMCW radar level gauge, - which, during measurement operation, periodically and linearly, in particular according to a sawtooth function, sends frequency-modulated microwave signals (S) in the direction of the filling material (1), - whose reflection signals (R) reflected from the surface of the contents are received after a signal transit time that depends on the fill level (L), and - determines the fill level (L) based on the signal travel time, at which - a reference function (F) beforehand R , F' R ) is derived, which represents an amplitude profile of a reflection signal (R) received by the level gauge when a known reference gas is located above the contents (1), - subsequently, auxiliary functions (F) are derived based on the reference signals (R) received during measurement operation. x , F' x) are derived, which represent the amplitude profile of the reflection signals (R) received by the level gauge while an unknown gas (X) is located above the contents (1), - the helper functions (F x , F' x ) with the reference function (F R , F' R ) can be compared, and - the level gauge diagnoses a composition of the unknown gas (X) located above the contents (1) that differs from the reference gas, if the comparison shows a significant deviation (Δ x ) between an auxiliary function derived in measurement operation (F x , F' x ) and the reference function (F R , F' R) results in - the level measuring device generates a measurement signal (M) by mixing the reflection signals (R) with the transmitted microwave signals (S) and subsequent filtering, which contains those frequencies (Δf) that correspond to the differences of the frequencies (f) of the signals simultaneously present at the mixer (51), - the reference function (F R , F' R ) is an envelope that represents the amplitude profile of a measurement signal (M) as a function of time (t) that arises when the reference gas is located above the filling material (1), and - the helper functions (F x , F' x ) Envelopes are those that represent the amplitude profile of measurement signals (M) as a function of time (t) that arise during measurement operation when the unknown gas (X) is located above the filling material (1).

To provide an electromagnetic wave absorber evaluation device and an electromagnetic wave absorber evaluation method capable of precisely evaluating behavior of an electromagnetic wave absorber for millimeter wave band or submillimeter wave band electromagnetic waves.SOLUTION: In an electromagnetic wave absorber evaluation device 1, width (a), height (b), and length L of a casing 2 for housing a board 3 having microstrip lines 4, 5 for inputting and outputting signals, and an evaluation frequency ft obtained by the following formula (1) satisfies the following formula (2) in a frequency domain of 20GHz or higher, wherein α is expressed by the following formula (5).SELECTED DRAWING: Figure 1

The invention relates to a method for automatically selecting an imaging function (AF) from a set (MAF) of at least two predefined imaging functions for a measuring device, wherein the measuring device is designed to record a measurement value of a process measurement variable of a medium (ME), wherein the imaging function (AF) describes a functional relationship between at least one auxiliary measurement variable (HG) and a measurement variable derived from the process measurement variable; wherein the method comprises at least the following steps: determining at least one first measurement value (ME1) of a first decision variable (E1); determining at least one first measurement value (ME2) of a second decision variable (E2); determining a relationship (B) between the measurement values (ME1, ME2) of the decision variables (E1, E2); selecting an imaging function (AF) on the basis of the relationship (B).

This reflection coefficient measurement device comprises: an antenna unit (110, 111) of which the end on the side in contact with a target sample is an open end; an open unit (112) of which the distal end is an open end; a short unit (113) in which a center conductor and the ground are electrically connected at the distal end; a load unit (16) that terminates a signal line; a switch (12); and a reflection coefficient measurement unit that controls the switch (12) to connect the antenna unit (110, 111), the open unit (112), and the short unit (113) to a port of the reflection coefficient measurement unit in the stated order, and measures a reflection coefficient. The electrical lengths of wiring from the open end of each antenna unit (110, 111) to the switch (12) are the same.

The application provides a coal rock permeability improvement effect test and system by microwave heating, and relates to the technical field of coal rock testing. A group of microwave emission parameters are selected by the central control, and N microwave emission modules in M microwave emission modules are controlled to emit microwaves. The first inlet flow collected by the inlet flow meter is recorded, and the first outlet flow collected by the outlet flow meter is recorded. The central control determines the permeability improvement degree of the industrial microwave oven under the set microwave emission parameters according to the first inlet flow, the first outlet flow and the preset initial fissure degree of the coal rock. The next group of microwave emission parameters are selected from the preset emission parameter set. The step of controlling N microwave emission modules in M microwave emission modules to emit microwaves according to the selected microwave emission parameters is returned to be executed until all the microwave emission parameters in the preset emission parameter set are selected. The microwave emission parameter with the highest permeability improvement degree is selected from the permeability improvement degrees under the groups of microwave emission parameters, and is configured to the industrial microwave oven, so that the microwave emission parameter with the highest permeability improvement degree can be obtained, and the extraction efficiency of the coalbed methane is improved.

Device for determining material properties by millimeter wave radiation, with a transmitting unit (11) which emits an arbitrarily polarized millimeter wave signal at a specific angle of incidence onto an object (15) to be examined, a receiving unit (12) that detects a signal (23, 23´) reflected from the object (15) under investigation with respect to intensity and / or phase, and a processing unit (20) which determines the permittivity and / or layer thickness of the investigated object (15) by means of an ellipsometric evaluation from a component of the reflected signal (23) polarized parallel to the plane of incidence and a component polarized perpendicular to the plane of incidence, wherein the transmitting and receiving unit (11, 12) are arranged in front of the object (15) to be examined such that they span an aperture area (10, 10'), characterized by that the transmitting and receiving unit (11, 12) has several transmitting and / or receiving antennas (41) forming a two-dimensional antenna array (40), wherein the antenna array (40) has an attenuation mat (48) in its center and the several transmitting and / or receiving antennas (41) are arranged around the attenuation mat (48).

The present invention discloses a low dielectric constant filter membrane based on biological enzymes. The preparation method includes drying the low dielectric constant filter membrane, dropping biological enzymes onto the surface of the dried filter membrane and then freeze-drying. After the moisture has completely evaporated, the low dielectric constant filter membrane based on biological enzymes is obtained. At the same time, the present invention also discloses the application of the low dielectric constant filter membrane based on biological enzymes in a waveguide gas sensor. After fixing the low dielectric constant filter membrane based on biological enzymes on the resonance window of the resonator in the waveguide gas sensor, the sensor is assembled and tested. By using a filter membrane with a small volume that is convenient for installation and disassembly, the present invention is conducive to repeatedly testing the same sample multiple times, has good reusability, and the low dielectric constant filter membrane based on biological enzymes has good air permeability, which can enable the enzymes to fully contact with the gas, further improving the sensitivity of the sensor.

This makes it possible to suppress the transfer of external heat from the support points of the observation device to the observation device itself. [Solution] The observation unit comprises a housing in which the interior is a vacuum, a base housed in and fixed to the housing, and an observation device housed in the housing and supported by the base, wherein the base has a first magnet, and the observation device has a second magnet positioned to repel the first magnet and is supported away from the base.

This invention proposes a method and system for measuring the gas content of bubbles in micro / nano bubble solutions, belonging to the technical field of fluid measurement. The method includes acquiring time-domain reflectometry (TDRS) waveform signals and the solution temperature of the micro / nano bubble solution; extracting characteristic parameters of the micro / nano bubble solution based on the TDRS waveform signals; constructing a bubble content measurement model; calibrating the system parameters of the bubble content measurement model to obtain a calibrated bubble content measurement model; inputting the characteristic parameters and the solution temperature into the calibrated bubble content measurement model; and outputting the bubble content measurement results for online monitoring. This invention can effectively improve the accuracy and stability of bubble content measurement in micro / nano bubble solutions, enabling online monitoring of bubble content.

The present application relates to the technical field of preparing fireproof brick, and particularly relates to a high-precision preparation method of siliceous fireproof brick for glass kiln, which comprises the following steps: preparing a brick blank, and firing the brick blank by a preset temperature rising program; determining whether a displacement type crystal phase conversion process of the brick blank is qualified based on a step temperature corresponding to an instantaneous expansion peak value of a linear expansion rate curve, and adjusting a temperature rising rate based on unqualified conditions; determining whether a crystal nucleus generation process of the brick blank is qualified based on an attenuation rate of an apparent porosity, and optimizing a rate adjustment coefficient; determining whether an alpha-cristobalite conversion process is qualified based on a characteristic frequency band energy peak value extracted from an acoustic emission signal, so as to optimize a heat preservation time length; sampling and analyzing the brick body, determining whether a firing quality of the brick body is qualified based on brick body quality characterization parameters calculated based on a main crystal phase network connectivity, a secondary crystal phase dispersivity and a bonding phase coverage rate of the brick body, and optimizing a preset energy peak value based on unqualified conditions. The present application improves the preparation quality of the siliceous fireproof brick.

The application discloses a PE pipe microwave detection uncertainty evaluation method and device and equipment thereof, and relates to the technical field of nondestructive testing.The method comprises the following steps: obtaining detection data of uncertainty factors in a PE pipe microwave detection process, wherein the uncertainty factors are labeled with data property identifiers; converting the detection data into membership vectors based on the data property identifiers and corresponding preset conversion rules, wherein the preset conversion rules comprise membership function conversion based on a combination of trapezoidal distribution and triangular distribution, and weight vector direct quantization conversion based on expert scoring and engineering experience adjustment; and performing fuzzy comprehensive evaluation on the uncertainty factors based on the membership vectors and preset weights to obtain a comprehensive evaluation result.Under the premise of not relying on repeated measurements or physical tracing required for uncertainty evaluation, the method realizes structured, operable and engineering interpretable comprehensive evaluation of the uncertainty factors in the PE pipe microwave detection process.

The present application relates to the technical field of extraterrestrial resource development, in particular to a microwave-mechanical self-adaptive anchoring device for asteroid resource mining. The device comprises a mechanical arm, a microwave generator, an anchoring drill and an anchoring shell. The mechanical arm is internally provided with a microwave transmission channel, and the microwave generator guides the microwave to the anchoring shell through the channel; the anchoring shell is made of microwave absorbing material and can absorb microwave to heat and assist in melting the surrounding asteroid soil. The anchoring drill is driven by a conical structure and a ring-shaped push plate to drive the anchoring shell to drill down synchronously, and the mechanical lower arm is separated after anchoring is completed through a disengaging plate, a disengaging block and a limiting groove. The system identifies the dielectric properties of the asteroid soil through a dielectric detection device, self-adaptively adjusts the microwave working parameters, and realizes closed-loop control of the melting temperature by using a thermocouple. Through microwave melting anchoring, a fused anchoring body is formed in situ, which has the advantages of high anchoring strength, small disturbance to the asteroid, strong environmental adaptability, safe detachment and the like.

This disclosure relates to a system and method for imaging an object of interest. The system includes a low-frequency radiation source for transmitting a set of low-frequency electromagnetic waves toward an object of interest, wherein the size of each of the set of low-frequency electromagnetic waves is greater than the volume of the object of interest; a metasurface for receiving the set of low-frequency electromagnetic waves after the set has passed through or around the object of interest and generating an impression signal, wherein the metasurface includes a set of unit cells; and a processor for generating at least one impression of the object of interest based on the impression signal.