37 results about "Microwave response" patented technology

A method and apparatus for enhanced microwave imaging of an object collects microwave responses for multiple combinations of transmit antennas, receive antennas, and object movement states. The responses are grouped into sets of responses corresponding to at least two object movement states. An image is reconstructed from the set of responses for each movement state, and a differential image representative of object movement is generated from the reconstructed image for each of the at least two object movement states. The differential image is overlaid on a reconstructed image to obtain an enhanced composite image of the object.

A microwave breast cancer imaging method that includes an examination table that is both comfortable and reliable is provided that includes a support system and an orientation system such that breasts can remain in a fixed position to allow for scanning. A horizontal microwave and optically transparent scan plate forms part of the top of the examination table. The imprint of the breasts on the scan plate may be visually displayed to aid in the orienting of each breast such that all volumes within the breast are scanned. Microwave power is then scanned upward through the scan plate to develop a microwave response that is indicative of the presence of a lesion. After scanning, the visual imprint of the breast is recorded. As needed, microwave equipment can be included within a microwave shielded enclosure that also forms part of the scan table. Spurious leakage of microwave power may be further suppressed by use of microwave-absorbing materials, within the enclosure and, in the padding that covers the surface of the examination table and removable pads.

A method and apparatus for enhanced microwave imaging of an object collects microwave responses for multiple combinations of transmit antennas, receive antennas, and object movement states. The responses are grouped into sets of responses corresponding to at least two object movement states. An image is reconstructed from the set of responses for each movement state, and a differential image representative of object movement is generated from the reconstructed image for each of the at least two object movement states. The differential image is overlaid on a reconstructed image to obtain an enhanced composite image of the object.

A system and method for determining loading of a filter having a first dielectric constant with a material having a different dielectric constant, is disclosed. The filter is contained within a metallic container forming a microwave cavity, and microwave or RF energy is created within the cavity and changes in the cavity microwave response are monitored. The changes in cavity microwave response are related to filter loading. In a preferred embodiment, the microwave energy includes multiple cavity modes thereby allowing determination of spatial distribution of the contaminant material loading. In one embodiment, the microwave cavity response includes a shift in frequency of a resonant mode. Alternatively, the microwave cavity response includes a shift in quality factor Q of a resonant mode. The microwave cavity response may include a shift in amplitude or peak width of the microwave's signal at resonance.

Method for determining loading of a filter. The filter has a first dielectric constant. The filter becomes loaded with contaminant material that has a second dielectric constant. The filter, such as a diesel particulate filter, is contained within a metallic enclosure forming a microwave cavity. The method includes establishing microwave energy in the cavity and monitoring changes in the cavity microwave response, the changes being related to filter loading.

Method for determining loading of a filter. The filter has a first dielectric constant. The filter becomes loaded with contaminant material that has a second dielectric constant. The filter, such as a diesel particulate filter, is contained within a metallic enclosure forming a microwave cavity. The method includes establishing microwave energy in the cavity and monitoring changes in the cavity microwave response, the changes being related to filter loading.

A system and method for determining loading of a filter having a first dielectric constant with a material having a different dielectric constant, is disclosed. The filter is contained within a metallic container forming a microwave cavity, and microwave or RF energy is created within the cavity and changes in the cavity microwave response are monitored. The changes in cavity microwave response are related to filter loading. In a preferred embodiment, the microwave energy includes multiple cavity modes thereby allowing determination of spatial distribution of the contaminant material loading. In one embodiment, the microwave cavity response includes a shift in frequency of a resonant mode. Alternatively, the microwave cavity response includes a shift in quality factor Q of a resonant mode. The microwave cavity response may include a shift in amplitude or peak width of the microwave's signal at resonance.

Provided are a ferroelectric epitaxial thin film for a microwave tunable device including a ferroelectric BaTiO3 seed layer and an epitaxial (Ba1-xSrx)TiO3 thin film, and a microwave tunable device using the same, whereby it is possible to improve the microwave response property of the microwave tunable device, and to enhance the quality of the wireless communication with ultra high speed, low electric power, low cost, and high sensitivity, by using the device of the present invention as an active antenna system, a satellite communication system, or a wireless sensor system,

Method for determining loading of a filter. The filter has a first dielectric constant. The filter becomes loaded with contaminant material that has a second dielectric constant. The filter, such as a diesel particulate filter, is contained within a metallic enclosure forming a microwave cavity. The method includes establishing microwave energy in the cavity and monitoring changes in the cavity microwave response, the changes being related to filter loading.

Aresin matrix with strong microwave absorbability and a preparation method thereof belong to the field of composite materials. In the invention, high-performance epoxy resin with strong polarity is selected as matrix resin, a microwave absorptioncomponent is added for adjusting microwaveresponsiveness and viscosity of a resin system to adapt to liquid molding by winding and the like, a curing agent is selected for adjusting themicrowaveresponse activity of the resin system, and the mechanical property, the heat resistance and thedimensional stability of the resin matrix are achieved; on the basis, an ionic liquid modified nanometer component is adopted for further enhancing the microwaveresponsiveness of the resin matrix. By adjusting the component structure and thematch ratio of the matrix resin, the microwave absorption component, the curing agent,theionic liquid modified nanometer componentand the like, a microwave curing resin system with good microwave absorbability, good dispersity of the nanometer component, proper viscosity, uniform curing, excellent comprehensive mechanical property, good heat resistance and high dimensional stability is developed. The resin matrix has great guiding significance for preparation of fiber composite materials and can be widely applied to the fields of aerospace and the like.

The invention relates to a frequency-conversion ferromagnetic resonance measuring system comprising a magnet, a measuring instrument and a measuring jig, wherein the magnet provides a magnetic field; the measuring instrument provides an excitation signal of a microwave and picks the response of a measured material; the measuring jig determines the position of the measured material in the magnetic field, provides an excitation signal interface and a response signal interface and is arranged in the magnetic field and provided with a coplanar waveguide and a conversion plug; the coplanar waveguide is processed on a high-frequency plate through a printed circuit board technology, and both ends of the coplanar waveguide are attached to and arranged on the conversion plug so as to realize the conversion from the coplanar waveguide to a coaxial cable; the coplanar waveguide is connected with the measuring instrument through the coaxial cable; and a sample is fixed on the measuring jig and is attached to the coplanar waveguide. The invention carries out microwave characteristic analysis by not only adopting a way of changing the size of an external magnetic field, but also adopting a way of fixing the external magnetic field for providing a microwave field with different frequencies, prevents the magnetic structure of the sample from being changed by the external magnetic field during measurement and also acquires the microwave response of the sample under different frequencies and magnetic fields.

This invention refers to a kind of method of producing sopping material by grafting sand sagebrush gum into crylic acid (acrylate) in microwave radiation. The manufacturing engineering is to neutralize the crylic acid partially with sodium hydroxide, potassium hydroxide or ammonia, then adds initiator and sand sagebrush gum or other vegetable gum to it when whisking and puts it into microwave response operator after the system is well-proportioned. You should adjust it to certain radiation power and radiation time, without adding crosslinking agent to it, to graft the sand sagebrush gum into crylic acid and dry the product. After smashed, it becomes the final product. The water absorption rate of the sopping material produced by the invention is between 400ml / s and 500ml / s. The polyreaction only needs between 4min and 5min after adopting the microwave radiation technology. This invention can solve the problem of high cost of now-existing sopping material. The product can be used as anti wind erosion agent and sand-fixation agent in the field of entironment and play an active role in advancing germination, anti-drought and other dry farming.

The invention discloses a target recognition method and a device by utilizing microwave signals and optical signals. The method comprises the following steps of S1, sending a laser inquiry signal carrying the identification information and a time delay instruction from an inquiry party to a response party, and starting the timing operation; S2, decoding the received laser inquiry signal by the response party, generating a microwave response signal according to the identification information obtained by decoding, and transmitting the microwave response signal according to the time delay instruction; S3, stopping the timing operation by the inquiry party after receiving the microwave response signal; S4, judging whether the time interval between the starting moment and the stopping moment ofthe timing operation conducted by the inquiry party is within a preset time threshold value or not; if yes, judging that the response party is a target on our part; otherwise, judging that the response party is a target on the enemy part. The device comprises equipment which can be applied to the inquiry party and the response party. According to the invention, the defects of low angle resolutionand beacon function caused by microwave inquiry can be overcome. Meanwhile, the problem that the transmission direction of a response signal generated through the laser response process is difficultto be determined is solved.

The invention discloses a microwave response shape memory polymer composite material and a preparation method thereof. The preparation method comprises the steps: with 90-99wt% glutaraldehyde crosslinked polyvinyl alcohol as a base material and 1-10wt% microwave absorption medium silylated modified nanometer silicon carbide as a filling material, modifying the acidized nanometer silicon carbide by using a silylated coupling agent, then, dispersing the modified nanometer silicon carbide into water, mixing the modified nanometer silicon carbide with a polyvinyl alcohol water solution, and carrying out glutaraldehyde crosslinking reaction to obtain the microwave response shape memory polymer composite material. The composite material disclosed by the invention has shape change and generates a reply effect under the irradiation of a microwave field, and is not needed to be preheated in a reply process.

The present invention discloses a method of improving a coloring efficiency of surimi products in an oil-frying process by using microwave heating and belongs to the technical field of food processing. The method comprises the following steps: thawing, chopping and blending, forming, microwave curing, oil-frying and cooling. Based on a raw material microwave response mechanism, and a precisely controlled microwave condition and a water content state of the finished products, the coloring efficiency is greatly improved. Advantages are as follows: the method uses clean energy microwave to conduct the curing and heating, reduces a loss of water-soluble components in a boiling and heating process, shortens a surface dehydrating time during the oil-frying process, and can also further reduce uses of coloring accessory materials. By implementing the method, the method can directly avoid a sewage treatment, shortens the oil-frying time, reduce the uses of additives, and thus enhance a production efficiency and product quality.

The invention discloses an experimental analysis method for microwave response characteristics of high-sulfur coal and a sulfur-containing model compound and belongs to coal microwave desulfurization technology research methods. The method includes the steps of 1) preparing powder samples; 2) subjecting the powder samples to dielectric constant measurement; 3) subjecting powder sample dielectric constants to data analysis and theoretical calculation; 4) conducting a microwave desulfurization experiment; 5) analyzing and summarizing the microwave response characteristics of the high-sulfur coal and the sulfur-containing model compound. The experimental analysis method has the advantages that a coal microwave wide-frequency-band actual dielectric constant measurement method is established by means of combining measured data with theoretical conversion, and then dielectric property measurement is conducted on the basis of integrating existing analysis means with sample preparation methods for preparing various powder samples comprehensive in property, so that comprehensive studies on coal microwave dielectric response characteristics are achieved; comprehensive studies on microwave desulfurization mechanisms and coal quality change are achieved by means of combining microwave desulfurization experiments with industrial analysis, component determination, coal quality analysis and functional group and sulfur occurrence mode detection, and finally, comprehensive studies on the coal microwave response characteristics are achieved.

The invention relates to the field of additives for building materials, in particular to an additive microcapsule based on microwave controlled release and a preparation method thereof. The microcapsule is composed of a capsule wall, a capsule core and a packaging material, wherein the capsule wall is made of polyvinylidene fluoride fiber; the capsule core is an additive which needs to be controlled to release; the packaging material is a heat-sensitive phase change material; according to the method, the PDVF material is high in strength, resistant to acid and alkali and suitable for being used in building materials; most importantly, the PDVF material can realize microwave response, so that active controlled release of the admixture in concrete can be realized, and the problem of performance loss caused by advanced release of the admixture is effectively solved.

The invention relates to the field of admixtures for building materials, in particular to a microwave-responsive admixture active release capsule and a preparation method thereof. The active release capsule is composed of a capsule wall, a capsule core and a packaging material, wherein the capsule wall is made of porous ceramsite; the capsule core is an admixture needing to control active release;and the packaging material is an organic phase change material doped with Fe3O4. The method disclosed by the invention is rapid, simple and convenient, the used materials have wide sources, the active release capsule can stably exist in building materials, has strong additive loading capacity, and can be widely applied to loading of various admixtures. Besides, the microwave responsiveness and the wave-absorbing and heat-generating functions of Fe3O4 in the packaging material are utilized, the capsule response can be triggered by applying an external microwave signal to actively release the admixture, so that the problems of low utilization efficiency, even possible negative effect and the like when the admixture is directly doped into the building materials are effectively solved, and the active control on the performance of the building materials is further realized.

The invention discloses a method for treating high-concentration refractory organic wastewater by using microwave induced oxidation, which is high in treatment efficiency, short in treatment time and low in running cost, occupies a small space, is safe and easy to implement and maintain. The method comprises the following steps of: firstly, adding a certain amount of sulfuric acid into high-concentration refractory organic wastewater to be treated, and adjusting the pH value of the wastewater to ensure that the wastewater is acidic; then, adding an oxidant capable of strongly absorbing microwaves into the wastewater after water quality adjustment, and performing aeration pre-reaction for 10 minutes, wherein the oxidant is a microwave response type material which is made from metal capable of absorbing the microwaves and the microwave response type material mainly contains one or more types of metals including iron, manganese, nickel and the like capable of absorbing the microwaves; then, putting the wastewater after pre-reaction treatment into a microwave oxidation reactor, and performing microwave induced oxidation reaction; then, putting the mixture after the microwave induced oxidation reaction into air floatation equipment, performing mud-water separation, and discharging after the outflowing water reach a standard; and finally, recycling the separated mud residues.

The invention relates to a swimming pool safety monitoring system based on microwave detection and a method thereof. The swimming pool safety monitoring system comprises a first microwave emitter, a microwave response chip, an information processor and an alarm module. The microwave response chip has a unique identifier IP and is detachably fixed on the head part of a swimmer. The first microwave emitter is installed above or at the periphery of a monitoring area and emits microwave signals to the monitoring area at intervals and is used for detecting the microwave response chip in the monitoring area and feeding back the detected identifier IP to the information processor. The information processor receives the identifier IP fed back by the first microwave emitter and is connected with the alarm module. Microwave detection and matching and comparison of the information processor are adopted so that inspection speed of the monitoring area can be greatly enhanced and rescue reaction time can be reduced. Besides, the construction structure is simple, construction cost is low and later maintenance is simple and convenient.

The invention provides a swimming pool security monitor system based on microwave detection. The swimming pool security monitor system comprises a microwave emission unit, a microwave response unit, an acoustoelectric conversion unit, an information processor and an alarm module, wherein the microwave emission unit and the acoustoelectric conversion unit are detachably fixed on a head of a swimmer, when the head of the swimmer emerges water surface, a diaphragm of the acoustoelectric conversion unit vibrates and the acoustoelectric conversion unit outputs an electric signal to the microwave emission unit, the microwave emission unit emits a first microwave signal to the microwave response unit, the microwave response unit feeds back a received first microwave signal to the information processor, and the information processor receives and processes the received information, and is connected with the alarm module. Through adoption of the swimming pool security monitor system and method based on microwave detection, the problem of high false alarm rate of the existing swimming pool monitor measures is solved.

The invention relates to a swimming pool safety monitoring system based on microwave detection and a method thereof. The swimming pool safety monitoring system comprises a first microwave emitter, a microwave response chip, an information processor and an alarm module. The microwave response chip has a unique identifier IP and is detachably fixed on the head part of a swimmer. The first microwave emitter is installed above or at the periphery of a monitoring area and emits microwave signals to the monitoring area at intervals and is used for detecting the microwave response chip in the monitoring area and feeding back the detected identifier IP to the information processor. The information processor receives the identifier IP fed back by the first microwave emitter and is connected with the alarm module. Microwave detection and matching and comparison of the information processor are adopted so that inspection speed of the monitoring area can be greatly enhanced and rescue reaction time can be reduced. Besides, the construction structure is simple, construction cost is low and later maintenance is simple and convenient.

The invention provides a swimming pool safety monitoring system based on microwave detection, which includes a microwave emission unit, a microwave response unit, an acoustic-electric conversion unit, an information processor and an alarm module; the microwave emission unit and the acoustic-electric conversion unit are detachably fixed on the swimming pool head of the swimmer; when the head of the swimmer emerges from the water, the diaphragm of the acoustic-electric conversion unit vibrates and outputs an electrical signal to the microwave transmitting unit through the acoustic-electric conversion unit; the microwave transmitting unit emits the first A microwave signal is sent to the microwave response unit; the microwave response unit feeds back the received first microwave signal to the information processor; the information processor receives and processes the received information, and is connected to the alarm module. The invention provides a swimming pool safety monitoring system and method based on microwave detection to solve the problem of high false alarm rate in existing swimming pool monitoring measures.

The invention discloses a preparation method of reduced graphene oxide paper. The preparation method comprises the following steps: step 1, irradiating graphene oxide paper for 1-2 seconds by using a laser point; and step 2, putting the graphene oxide paper obtained in the step 1 into a microwave oven for microwave radiation, and stopping microwave radiation when 1-2 times of luminescence occurs. The invention also provides the reduced graphene oxide paper prepared by the method. According to the preparation method of the reduced graphene oxide paper, the graphene oxide paper is irradiated by the laser point, so that the graphene oxide paper is triggered at the irradiation point and responds to microwaves, and the reduced graphene oxide paper with conductivity can be obtained through reduction by using microwaves without damaging the integrity of the graphene paper. The method disclosed by the invention is simple and easy to operate and low in cost, can be completed under the conditions of air and room temperature, does not need complicated and expensive equipment, and is suitable for large-scale preparation of high-quality graphene paper.

The invention discloses a preparation method and application of a TPU-based microwave response 4D printing consumable. Firstly, the filler (carbon nanotubes, nano-silicon carbide or nano-zinc oxide) is subjected to surface active reaction to prepare active functional fillers, and then the active functional fillers are introduced into the semi-crystalline TPU resin with excellent shape memory performance by melt blending method, and then TPU-based microwave-responsive 4D printing consumables were prepared by twin-screw extrusion. The TPU-based microwave-responsive 4D printing consumables are applied to FDM technology to print microwave-responsive smart structural parts. The invention prepares a TPU-based microwave-responsive 4D printing consumable through a simple method, and the prepared TPU-based microwave-responsive 4D printing consumable has sensitive microwave responsiveness, and excellent thermal, mechanical and shape memory properties. The 4D printed smart structural parts are sensitive to microwaves and have excellent mechanical properties.

The invention relates to the technical field of synthesis of photoluminescence transition metal complex sensitized materials, and in particular, relates to a preparation method of a photoluminescence material capable of generating singlet oxygen with ultraviolet and microwave response performance. The preparation method comprises the steps: fully reacting 4,6-diamino-2-mercaptopyrimidine, copper sulfate pentahydrate, stannous chloride, hexadecyl ammonium bromide and an aqueous solution in a nitrogen atmosphere to obtain a white suspension; and carrying out centrifugal separation on the obtained suspension, washing the milk white precipitate, and carrying out vacuum drying to obtain the light yellow 4,6-diamino-2-mercaptopyrimidine copper (I) (Cu-dapy) photoinduced strong orange yellow light-emitting powder material. The material can generate singlet oxygen under the excitation of microwaves and ultraviolet light, and is expected to become a sensitizer in microwave-induced anti-tumor and photodynamic anti-tumor therapies.

The present invention relates to the field of admixtures for building materials, in particular to an admixture microcapsule based on microwave controlled release and a preparation method thereof; Vinyl fluoride fiber; the capsule core is an admixture that requires controlled release; the packaging material is a heat-sensitive phase change material; the PDVF material in the disclosed method has high strength, acid and alkali resistance, and is suitable for use in building materials; the most important The most important thing is that the PDVF material can realize the microwave response, so that the active and controlled release of the admixture in the concrete can be realized, which effectively solves the problem of performance loss caused by the early release of the admixture.

This invention refers to a kind of method of producing sopping material by grafting sand sagebrush gum into crylic acid (acrylate) in microwave radiation. The manufacturing engineering is to neutralize the crylic acid partially with sodium hydroxide, potassium hydroxide or ammonia, then adds initiator and sand sagebrush gum or other vegetable gum to it when whisking and puts it into microwave response operator after the system is well-proportioned. You should adjust it to certain radiation power and radiation time, without adding crosslinking agent to it, to graft the sand sagebrush gum into crylic acid and dry the product. After smashed, it becomes the final product. The water absorption rate of the sopping material produced by the invention is between 400ml / s and 500ml / s. The polyreaction only needs between 4min and 5min after adopting the microwave radiation technology. This invention can solve the problem of high cost of now-existing sopping material. The product can be used as anti wind erosion agent and sand-fixation agent in the field of entironment and play an active role in advancing germination, anti-drought and other dry farming.

The invention discloses a microwave response characteristic test and analysis method of high-sulfur coal and sulfur-containing model compounds, which belongs to the research method of coal microwave desulfurization technology. The method steps: 1) preparing a powder sample; 2) testing the dielectric constant of the powder sample; 3) analyzing and theoretically calculating the dielectric constant of the powder sample; 4) conducting a microwave desulfurization test; 5) analyzing and summarizing the high-sulfur coal and Microwave response properties of sulfur-containing model compounds. Advantages: Combining the measured data and theoretical conversion, the actual dielectric constant test method of coal microwave broadband is established, and then the dielectric property test is carried out on the basis of preparing various powder samples with comprehensive properties by integrating existing analysis methods and sample preparation methods. A comprehensive study of the microwave dielectric response characteristics of coal was realized, and then a comprehensive study of the microwave desulfurization mechanism and coal quality changes was realized through the microwave desulfurization test combined with industrial analysis, component determination, coal quality analysis, functional group and sulfur occurrence form detection, and finally A comprehensive study on the microwave response characteristics of coal has been realized.