344 results about "Microwave emission" patented technology

The utility model discloses a polycrystalline reduction starting device and a microwave power supply heating system, and relates to the technical field of polycrystalline silicon, a polycrystalline reduction furnace comprises a reduction furnace base and a bell jar which are detachably connected, the polycrystalline reduction starting device is characterized in that the tail of a microwave energy feedback device is connected with a microwave transmission device, and the microwave transmission device is used for being connected with a microwave emission device; the microwave energy feedback device is installed on the surface of the bell jar and guides microwave energy into the polycrystalline reduction furnace to heat the silicon core. The microwave energy feedback device introduces microwave energy into the reduction furnace to heat the silicon core, so that the resistance value of the silicon core can be reduced, the silicon core can be subsequently subjected to breakdown start with lower voltage, microwave heating can be started at low voltage, the phenomenon of discharge sparking in the reduction furnace is avoided, an insulating part at the bottom of the reduction furnace is prevented from being damaged, and safe operation of equipment can be ensured; and other materials or impurities cannot enter the reduction furnace through microwave heating, so that the environment of the reduction furnace is prevented from being polluted, and the purity of generated polycrystalline silicon is prevented from being reduced.

The invention relates to the technical field of industrial control, and discloses a real-time dynamic tuning system for a microwave drying process, which is characterized in that temperature distribution, microwave power intensity, humidity gradient and material deformation parameters in a drying cavity are acquired in real time, and time-space alignment and noise suppression are carried out on data of a multi-source sensor based on a Kalman filtering algorithm; generating a drying state matrix, generating a three-dimensional regulation and control instruction containing microwave emission frequency, power partition and drying time according to the drying state matrix by adopting a mixed algorithm of model predictive control and fuzzy logic, and taking the deviation between a final moisture content detection value of the material and a model predictive value as a loss function through an online error back propagation model. The weight coefficient of the microwave-thermal-mass transfer coupling model is dynamically corrected, the microwave energy ratio is optimized based on the improved particle swarm optimization, and the three-dimensional gradient field intensity distribution matched with the material morphology is generated according to the three-dimensional regulation and control instruction, so that the efficiency of the microwave drying process during real-time dynamic regulation and optimization is improved.

The invention belongs to the field of tunnel construction and the field of deep engineering disaster prevention and control, and provides a hydraulic and microwave combined insensitive hard rock burst prevention and control device which comprises a vehicle-mounted system, a hydraulic fracturing system and a microwave emission system. The hydraulic fracturing system is used for injecting water into the insensitive hard rock drill hole, forming a hydraulic fracturing crack on the circumferential wall surface of the insensitive hard rock drill hole, and then injecting a sensitive mineral proppant to fill the hydraulic fracturing crack; the microwave emission system is used for moving into the insensitive hard rock drill hole for microwave irradiation after the sensitive mineral proppant is injected; according to the method, hydraulic fracturing, microwave fracturing and sensitive mineral filling are combined and applied to fracturing and pressure relief of the insensitive hard rock of the deep tunnel, and due to the fact that sensitive minerals have high dielectric constants and dielectric loss factors, a good temperature rise effect can be shown under microwave irradiation.

The invention provides a high-sensitivity superconducting magnetic detection device and method based on an NV color center under high pressure and low temperature. The high-sensitivity superconducting magnetic detection device comprises a microwave emission module, an optical excitation module, an imaging module, a fluorescence collection module, a data collection and control module, a diamond anvil cell, a low-temperature test module and a magnet module. The method has the beneficial effects that the diamond injected with the NV color center serves as the anvil cell of the diamond anvil cell, and high-pressure and low-temperature conditions are synchronously obtained in liquid helium and liquid nitrogen temperature zones; according to the invention, in-situ pressure measurement can be realized under high pressure, and ruby or Raman standard pressure is not needed; a sample is placed in the diamond anvil cell, the diamond anvil cell is placed in the low-temperature cavity, the lowest temperature of 4K and in-situ pressurization can be realized by using the low-temperature test module, and the quality of a microwave signal transmitted by the low-temperature semi-steel cable is higher and the loss is smaller by using the low-temperature semi-steel cable. And the superconducting property of the material at low temperature and high pressure is quantitatively tested under the condition of high integration.

The invention relates to the technical field of deep engineering hard rock breaking, and discloses a shield microwave rock breaking device and method. The device comprises a shield cutter head, rock detection equipment and a drill rod, and the extension angle and the extension length of the drill rod are determined according to the positions of rock breaking target points of different rocks, so that a microwave transmitting device and a water injection cooling device of a drill bit can perform microwave rock breaking at the positions needing rock breaking more accurately, and the rock breaking effect is improved. According to the method, through a rock breaking model, the microwave emission angle, the microwave velocity, the microwave heating time, the water flow velocity, the water flowing time and the alternating frequency of microwave heating and water injection cooling under different mineral boundary geometric shapes and porosities are accurately set in real time, and microwave rock breaking is accurately carried out.

The present invention discloses a microwave continuous frequency modulation collaborative biomass directional depolymerization device and its usage method, belonging to the technical field of biomass resource utilization. The device includes a microwave continuous frequency modulation power supply, a microwave resonant cavity, a quartz tube reactor, and a product treatment device; a microwave feed port is provided on the microwave resonant cavity, and the microwave continuous frequency modulation power supply is connected to the microwave feed port; the quartz tube reactor is connected to an inert gas source, a biomass feed hopper is connected to the quartz tube reactor, a catalyst filling screen spacer is provided in the middle, an infrared thermal imager is provided above, and an infrared thermometer is provided at the catalyst filling screen spacer; the product treatment device includes a condensation system and a gas collection bag, the condensation system is arranged at the outlet of the quartz tube reactor, and the gas collection bag is arranged at the outlet of the condensation system. The present invention matches the microwave emission frequency with the intrinsic resonance frequencies of the three major components of biomass and the catalyst to achieve the goal of reducing the biomass cracking activation energy and realizing directional depolymerization.

The invention provides a Rydberg atom microwave detection system and method based on entangled light noise reduction, and relates to the technical field of microwave quantum. The method comprises the steps that idler frequency light and probe light with entanglement characteristics are generated, the probe light excites Rydberg atoms from a ground state to an excited state, and the idler frequency light is used for carrying noise information; the idle frequency light and the detection light are reflected into an atomic gas chamber in a non-coaxial mode, the coupling light is reflected into the atomic gas chamber, and Rydberg atoms are excited to a Rydberg first energy level from an excited state; microwaves carrying microwave information are emitted into the atom gas chamber, the microwaves are used for exciting Rydberg atoms from the first Rydberg energy level to the second Rydberg energy level so that the detection light can carry the microwave information, and finally the idler frequency light and the detection light enter the detection device so that noise information can be filtered out, and the detected microwave information can be obtained. According to the invention, loss of entanglement characteristics of the two beams of light can be effectively avoided, Rydberg atom microwave detection based on entangled light is realized, and the sensitivity of Rydberg atom microwave detection is improved.

The invention discloses a hot CO2-assisted electromagnetic heating in-situ carbon storage and hydrogen production synergistic method, belongs to the technical field of oil and gas reservoir in-situ carbon storage and hydrogen production, and solves the problem that CO2 and other gases can be generated during oxygen injection combustion reservoir in-situ hydrogen production at present. The method comprises the following steps: selecting a target reservoir, digging a well and distributing hydrogen production collaborative equipment, transforming and developing the target reservoir based on the type of the target reservoir, injecting high-temperature CO2, starting a microwave emission device of an electromagnetic heating hydrogen production and hydrogen production well to continuously heat the reservoir to a hydrogen production temperature, and keeping the current reservoir temperature and pressure condition to produce hydrogen. Starting an electromagnetic heating hydrogen production and hydrogen production well for production; closing the well to stop production when the hydrogen yield is rapidly reduced; according to the invention, the production of CO2 gas in the hydrogen production process is avoided, and multiple injection processes of oxygen-containing gas, water vapor and the like are simplified at the same time; the electromagnetic heating cost is reduced by injecting high-temperature CO2 to preheat the reservoir, and meanwhile, the utilization and geological storage of CO2 can be realized, so that the synergistic effect of geological storage of CO2 and in-situ hydrogen production is ensured.

The invention relates to a VOCs purification device based on an enrichment catalysis coupling microwave integrated technology, the VOCs purification device comprises an air inlet, a flip slide bar device and an overall shell, the lower part of the flip slide bar device is connected with the overall shell, and the upper part of the flip slide bar device is connected with the air inlet; a supporting frame is arranged at the bottom end in the overall shell, a stepping motor is arranged in a square groove position in the bottom of the supporting frame, and a three-rotation gear disc oil seal mechanism is arranged in a circular groove position in the top of the supporting frame. A thrust bearing is further arranged in the overall shell, and a rotating wheel cavity is formed above the thrust bearing. The upper part of the runner cavity is connected with a clean gas pipeline; the lower part of the base is connected with a three-spin gear disc oil seal mechanism; a microwave resonance shell is fixedly connected to the side face of the overall shell, and a microwave emission box is arranged on the microwave resonance shell. And a paint mist filter is arranged above the clean gas pipeline in the overall shell. Compared with the prior art, the device has the advantages that industrial waste gas can be directly absorbed, and purification of VOCs is completed under automatic control.

The invention discloses a double-heating-system electronic-grade polycrystalline silicon reduction furnace and a process method thereof, and relates to the technical field of polycrystalline silicon production equipment, and the reduction furnace comprises a cooling liquid inlet and a cooling liquid outlet which are respectively formed in the upper part and the lower part of a microwave window; a microwave emission branch pipe is fixedly arranged on the outer side of each microwave window, and each microwave emission branch pipe is connected with the microwave emitter through a microwave transmission header pipe; the method comprises the following steps: S1, starting the furnace; s2, early growth stage of the silicon rod; s3, middle growth stage of the silicon rod; s4, later growth stage of the silicon rod; and S5, blowing out the furnace and cooling. The double-heating-system electronic-grade polycrystalline silicon reduction furnace has the beneficial effects that silicon rods with larger diameters can be produced, and the yield of a single furnace is remarkably increased; the quality of the silicon rod is improved, and the high quality requirement of electronic-grade polycrystalline silicon is met; according to the process method disclosed by the invention, the utilization rate of raw materials is increased to 89% or above, the generation amount of amorphous silicon powder is reduced to 7.2 kg / furnace or below, and the energy consumption of a unit silicon rod is reduced.

The invention discloses an AI intelligent regulation and control mental disease treatment system based on multi-mode microwaves, and the system comprises a data collection module which collects multi-mode microwave data, and the multi-mode microwave data comprises basic microwave data, neural pathway activity state data and personalized physiological data; the optimization regulation and control module is used for extracting optimal regulation and control data in the multi-modal microwave data through an improved deep convolutional neural network; the dynamic strategy module is used for collecting historical microwave stimulation data, and learning and optimizing a nonlinear relationship between regulation and control data and microwave stimulation parameters through a hybrid transfer learning model to obtain optimal microwave stimulation parameters for specific brain region neural activities; and the treatment execution module is used for controlling microwave emission equipment based on the optimal microwave stimulation parameters, emitting microwaves to the corresponding brain region of the patient for treatment, generating a three-dimensional visual report of the treatment progress, dynamically adjusting model parameters, realizing real-time optimization of treatment parameters and solving the limitation of static parameters in a traditional method.

The present invention discloses a microwave anti-icing device and method for wind turbine blades, which belongs to the field of wind power generation technology and can solve the problems of limited anti-icing efficiency, low durability, and certain safety hazards of existing anti-icing technologies. The device includes: a first microwave generator, which is arranged on the inner cavity wall of the wind turbine blade, and its microwave emitting end faces the leading edge of the blade; a second microwave generator, which is arranged on the outer wall of the wind turbine tower, and its microwave emitting end faces the blade of the wind turbine; a third microwave generator, which is arranged directly below the swept surface of the blade, and its microwave emitting end faces the tip of the wind turbine blade; a microwave control and signal transmission unit, which is used to control each microwave generator to emit microwaves to the blades of the wind turbine for deicing according to different working conditions of the wind turbine without affecting the energy efficiency output of the unit. The present invention provides a new method and idea for the current winter and spring anti-icing project of wind turbine blades.

The invention relates to the technical field of fireproof heat preservation plate machining, and discloses a fireproof heat preservation plate machining device and method.The fireproof heat preservation plate machining device comprises a microwave drying box, a sealing door is hinged to the outer portion of the microwave drying box, a containing groove is formed in the bottom of the microwave drying box, and a microwave emitting device is fixed in the containing groove; according to the fireproof heat preservation plate machining device and method, a microwave emitting device is started to conduct microwave drying on a fireproof heat preservation plate, a first motor is started to drive a belt and a ceramic screw to rotate, a belt drives metal fan blades to rotate, and then the microwave emitting device is started to conduct microwave drying on the fireproof heat preservation plate; and the ceramic screw drives the aluminum pipe screw to move, the aluminum pipe drives the ceramic cover plate to push the fireproof heat preservation plates, the interval gaps of the fireproof heat preservation plates are enlarged, the microwaves can irradiate the fireproof heat preservation plates more easily, and the drying efficiency of the fireproof heat preservation plates is improved.

The invention discloses an advanced water detection method based on controllable microwave and optical fiber temperature measurement combination. The method comprises the following steps: arranging a controllable microwave and optical fiber temperature measurement system; then the microwave transmitter and the receiver are matched with each other to obtain microwave data; meanwhile, the distributed optical fiber sensor obtains temperature data; then the monitoring host performs attenuation analysis on each group of received microwave data in combination with microwave emission power, preliminarily judges whether a water-containing disaster-causing body exists or not, and performs inversion processing on the received temperature data through a heat conduction model if the water-containing disaster-causing body exists so as to obtain the position of a heat source; and finally, setting a water-containing disaster-causing body judgment condition, performing fusion processing on the obtained water-containing disaster-causing body position and the heat source position, and finally determining the position of the water-containing disaster-causing body. By combining controllable microwaves with optical fiber temperature measurement, on the premise of a large detection range, the position of a water-containing disaster-causing body can be rapidly and accurately detected, meanwhile, the device has the advantage of being convenient to arrange, and therefore advanced detection of mine water disasters is effectively achieved.

The invention discloses an electric flame stove capable of eliminating ozone. The electric flame stove comprises a stove body, a magnetic energy box mounted at the upper end of the stove body and a burner mounted in the stove body, and a magnetron is arranged at the microwave emission port in the magnetic energy box. The high-frequency electromagnetic wave is adopted to excite the initial plasma, so that the temperature and efficiency of the electric flame are improved, and the high-temperature cooking requirements such as stir-frying in a kitchen are met; the reaction between active particles (oxygen ions O or oxygen atoms O) in plasma and ozone is accelerated by adopting high-frequency electromagnetic waves, and finally ozone molecules are decomposed and reduced, so that ozone overflow is inhibited; in a non-pot state, the density of the plasma in the double hearths is small, the microwave switch is switched off, the magnetron stops working, and microwave leakage is completely eradicated from the source; the cooling tank is annularly distributed on the side wall of the second hearth to form a continuous gas barrier surrounding the second hearth, so that the magnetron and the side wall of the second hearth are prevented from being influenced by ultrahigh temperature.

The invention provides a high-precision turntable and striking equipment for high-power microwave emission. The high-precision turntable and striking equipment comprises a base, the turntable is rotationally assembled with the base; the pitching bracket is rotationally assembled with the turntable; the feeder system penetrates in from the base and penetrates out from the pitching bracket through the turntable; the high-power microwaves are transmitted to the radar antenna through the feeder line system; one end of the pitching driver is fixed with the turntable, the other end of the pitching driver is fixed with a radar antenna, and the radar antenna is also fixed with a pitching bracket. The method has the advantage that the method can be used for high-power microwave emission to accurately track and rapidly strike combat targets.

The invention discloses a waveguide tube type radar liquid level meter, and relates to the technical field of radar measurement, the waveguide tube type radar liquid level meter comprises a casing body, the top of the casing body is provided with a casing upper cover, the lower part of the casing body is coaxially provided with a flange plate, and the bottom end of the casing body is connected with a casing cavity penetrating through the inside of the flange plate; a lens is arranged in the machine shell cavity, and a conical horn is connected to the lower portion of the machine shell cavity. According to the waveguide tube type radar liquid level meter, a microwave emitter emits frequency-modulated waves, a waveguide tube guides the electromagnetic waves to be rebroadcast towards the surface of a medium, and the electromagnetic waves reflected by the surface of the medium are guided to a receiver along the same path; the receiver receives electromagnetic waves reflected by the surface of the measured medium, and the signal processor processes echo signals; based on the time-frequency relation between the transmitting signal and the receiving signal, the distance between the liquid level meter and the surface of the measured medium is determined and converted into the liquid level; according to the scheme, false echoes can be automatically restrained, and liquid level measurement is more accurate and more stable.

The invention relates to a magnetic field sensor (10), comprising: an excitation light source (6) for emitting excitation light (4), a measurement region (7) which has colour centres (3) in a crystal (1), preferably NV centres in a diamond, which emit fluorescent light (5) when excited with the excitation light (4), a detector (8) for detecting the fluorescent light (5) from the measurement region (7), a microwave emitter (11) for applying a microwave field (9) to the measurement region (7), a signal generator (14) which is designed to generate a microwave signal (15) for the microwave emitter (11) and has two frequency components (fsb-(t), fsb+,π(t)) phase-shifted in relation to one another by π, in order to simultaneously excite magnetic field resonances at two different resonant frequencies (f-, f+) in the crystal (1) in order to determine a magnetic field (B), and an evaluation device (12) which has a demodulator (13) for forming a demodulated magnetic resonance signal from the detected fluorescent light (5) of the measurement region (7), wherein the evaluation device (12) is designed to determine a detuning (∆B) of the resonant frequencies (f-, f+) due to a change in the magnetic field (B), and to generate a frequency shift (∆f) of the microwave signal (15) according to the magnetic-field-related detuning (∆B) of the resonant frequencies (f-, f+). The magnetic field sensor (10) is designed to determine, in a temperature calibration step, a temperature-related detuning (∆T) of the resonant frequencies (f-, f+) and to take same into account in the frequency shift (∆f) of the microwave signal (15) in order to determine the magnetic field (B). The invention further relates to an associated method for calibrating the temperature of a magnetic field sensor (10).

The invention provides a multi-channel spiral microwave heater, which adopts a plurality of magnetrons, microwaves emitted by the plurality of magnetrons are gathered into a waveguide tube through a multi-channel waveguide tube, and energy superposition is realized; the waveguide tube is of a spiral structure, and a plurality of transverse waveguide tubes are arranged on the two opposite sides of the spiral waveguide tube from top to bottom, so that a plurality of transverse microwave transmitting ends from top to bottom are formed on one microwave heating rod device, and a microwave heater can sufficiently transmit large-range microwaves into a soil body. Moreover, the screw pitch of the spiral waveguide tube is gradually reduced from top to bottom, so that the arrangement distance of the transmitting antennas is gradually reduced from top to bottom, microwave energy at the bottom of the microwave heater is concentrated, energy weakening when the microwave energy is transmitted to the bottom of the spiral waveguide tube is avoided, and the heating effect on the deep soil body can be effectively improved.

The invention relates to an unmanned aerial vehicle-mounted microwave phase difference underground pipeline detection device and method. The device comprises a microwave phase difference detection system and an unmanned aerial vehicle system, and the microwave phase difference detection system is fixedly installed below an unmanned aerial vehicle rack and comprises a microwave emission source module used for generating microwave signals; the antenna array is formed by arranging five yagi antennas at equal intervals, the antenna in the middle is a microwave transmitting antenna, the antennas which are connected with the microwave transmitting source module and are symmetrically arranged on the two sides are microwave receiving antennas; and the phase difference measurement modules are respectively arranged on two sides of the antenna array and are used for measuring and calculating the phase difference between the microwave signals received by the two receiving antennas. The device depends on an unmanned aerial vehicle system, the position, depth and trend of the underground pipeline can be accurately calculated in combination with the position information of the unmanned aerial vehicle, technical support is provided for an intelligent underground pipe network, and the monitoring and maintenance capability of urban infrastructures can be improved.

A microwave oven for heating a food product such as a lasagna. The microwave oven comprises: two solid state microwave sources for generating microwaves, two microwave emitters arranged to emit the microwaves generated by the solid state microwave sources, a cavity defining a space for receiving the food product, wherein the space is arranged between the microwave emitters, and a redistributing element arranged to redistribute the microwaves emitted by at least one of the microwave emitters into the space towards one or more defined target areas of the space.

The invention provides a microwave energy-gathering thermal therapy device and system for tumor treatment, and the system comprises a microwave transmitting module of which a transmitting port is used for transmitting microwaves to tumor tissues so as to heat the tumor tissues; the energy-gathering and wave-guiding module is arranged in front of the emission port and is used for gathering microwaves in a tumor area; the cooling module is arranged around the emission port so as to form a cooling channel on the periphery of the emission port; the information acquisition module is used for acquiring induction information and image information of the tumor tissue; the control module is in communication connection with the microwave emission module, the cooling module and the information acquisition module and is used for generating microwave frequency information, temperature adjustment information and a target area according to induction information and image information sent by the information acquisition module before the microwave emission module emits microwaves to the tumor tissue, and the target area is located in the tumor tissue and is used for adjusting the temperature of the tumor tissue. And controlling the microwave emission module to emit microwaves to the target area according to the microwave frequency information, and adjusting the power of the cooling module according to the temperature adjustment information.

Various embodiments provide a handheld applicator for treating skin by means of microwave radiation. The applicator comprises an applicator housing, a microwave emitter configured to emit microwave radiation for treating tissue in a target area, and an actuator assembly configured to move the microwave emitter relative to the applicator housing whilst emitting microwave radiation for increasing uniformity of tissue treatment in the target area. Other embodiments relate to an applicator pad for a handheld applicator, a skin treatment kit, a waveguide section for directing microwave radiation toward skin, and a skin treatment apparatus for treating skin by means of microwave radiation.

The utility model relates to a raw material drying device for vegetable seasoning packet processing, which comprises a conical roller, a shaft support, a discharging sealing sleeve and a feeding base, a spiral blade is fixedly arranged in the conical roller, the shaft support and the conical roller are coaxially arranged and hermetically connected, a plurality of microwave transmitting components are arranged on the shaft support, and the feeding base is arranged on the shaft support. A vacuumizing pipe is arranged on the shaft support in a penetrating mode to vacuumize the interior of the conical roller, and the discharging sealing sleeve is used for sealing the discharging end. The device is good in sealing performance, can continuously work under the condition of keeping a certain vacuum degree, and is high in microwave utilization rate; due to the fact that the interior of the conical roller has high vacuum degree, the boiling point of water is low, water gasification is extremely fast, but the vacuum degree has no large influence on microwaves, and the device has high drying efficiency.

The utility model discloses a heating device for quickly activating a pressure-sensitive adhesive tape and a thermoplastic or thermosetting adhesive tape. The heating device comprises a microwave heating head, a microwave transmitting assembly and a motion driving assembly, the microwave emission assembly is connected with the microwave heating head and is used for outputting microwaves to the microwave heating head; the motion driving assembly is connected with the microwave heating head and used for achieving alignment and motion of the microwave heating head and the heated assembly. The microwave heating head is driven by the motion driving assembly to heat the heated assembly. According to the utility model, through the cooperation of the microwave emission assembly and the motion driving assembly, a pressure-sensitive adhesive tape and a thermoplastic or thermosetting adhesive tape are flexibly heated according to a set motion trail by allocating microwaves with appropriate power, and the heating objects applied by the device are the pressure-sensitive adhesive tape and the thermoplastic or thermosetting adhesive tape.

The invention relates to an apparatus (1) for thawing food, the apparatus 1 being preferably a thawing drum or a thawing mixer, comprising a thawing chamber (3) for accommodating food, wherein the thawing chamber (3) comprises a sensor (10) for sensing a degree of freezing of the food accommodated in the thawing chamber (3), the sensor (10) comprising a microwave emitter (11) and a microwave receiver (12) spaced apart from the microwave emitter (11), the microwave receiver (12) being further configured to receive an emission signal emitted by the microwave emitter (11), wherein the microwave emitter (11) and the microwave receiver (12) are arranged inside the thawing chamber (3) such that, during a thawing process with the apparatus (1), the food is at least temporarily located between the microwave emitter (11) and the microwave receiver (12).

The invention is directed to a method for detecting moisture in a roof structure comprising measuring microwave emission of the roof structure, particularly by using a passive microwave radiometer. The invention is also directed to use of a passive microwave radiometer for detecting leakages in a roof structure.

The utility model relates to the technical field of liquid detection, in particular to a liquid detector which comprises a shell, a non-metal container detection platform and a metal container detection cavity are arranged at the top of the shell, and a non-metal container detection module is arranged in the non-metal container detection platform. The nonmetal container detection module comprises an ultra-wide-band pulse microwave transmitter and an ultra-wide-band pulse microwave receiver, a metal container detection module is arranged in the metal container detection cavity and comprises an electric heater and a thermoelectric sensor, and a first indicator lamp and a second indicator lamp of a touch operation screen are arranged on the front side of the shell. A detachable bottom plate is arranged at the bottom of the shell, and four leveling pieces are arranged at the bottom of the bottom plate. According to the liquid detector, a non-contact detection method is adopted, and a container is prevented from being opened for sampling, so that the risk of leakage, evaporation or explosion of flammable and explosive liquid is remarkably reduced, the safety of operators is ensured, and potential threats to the surrounding environment are also reduced.

The invention relates to a portable measuring apparatus (100) for measuring at least one sap flow in a plant, said plant having an external envelope, said apparatus (100) comprising: - a microwave transmitter (10) for emitting a microwave electromagnetic flow towards a first part of the external envelope of said plant so as to heat an internal portion of said plant; - a thermal sensor (20) arranged to capture thermal radiation from said plant over time, - a processing unit (30) configured to determine, from the thermal radiation captured by the thermal sensor, a displacement of the heat front over time in said plant and to estimate, on the basis of the displacement of the heat front, the sap flow Figure for the abstract: Fig. 2

The invention relates to the field of semiconductor devices, and particularly discloses a photoelectric heterogeneous integrated microwave emission chip and a preparation method thereof, the chip is composed of a GaN HEMT amplifier and an InP UTC type detector on a SiC substrate; the preparation method comprises the following steps: preparing an amplifier on a SiC epitaxial wafer; growing a UTC type detector epitaxial layer on the InP substrate, and preparing a mesa structure; bonding the sapphire slide and the detector wafer; the InP epitaxial wafer substrate is removed; transferring the detector to an amplifier wafer through metal bonding; removing the temporary sapphire slide; and the detector is in electric signal communication with the amplifier. Compared with a method of firstly transferring an InP epitaxial layer and then preparing a detector device, the method has the advantages that the adverse effect of an InP-based detector processing technology on an amplifier is avoided; and secondly, the InP-based detector prepared by the method has the characteristic that the N-type contact metal faces downwards, and the structure is beneficial to reducing the junction region temperature and enhancing the heat dissipation capability of the device.