42results about How to "Increased interference" patented technology

The present invention provides an adjustment method for an almost blank subframe (ABS) pattern in a heterogeneous network. The method comprises the following steps: A, based on reference signal receiving power RSRP information fed back by user equipment UE, a micro base station identifies the UE as a high interference user or a low interference user; B, the micro base station counts DL ABS status or an active UE number according to the number of high interference users; C, the micro base station feeds the counted DL ABS status or the active UE number back to a macro base staion; D, the macro base station combines the feedback from each micro base station to determine whether to adjust the ABS pattern, and if so, a new ABS pattern or ABS pattern adjustment information is sent via the X2 interface between the macro base station and the micro base station.

The invention provides a multiple-transmission multiple-reception synthetic aperture radar signal processing method based on time-shift orthogonal wave forms. The method comprises the following steps: a set of time-shift orthogonal wave forms are constructed and transmitted through different antenna, wherein the time-shift orthogonal wave forms can be transmitted at the same time, and frequency bands of the time-shift orthogonal wave forms overlap; based on DBF and zero orientation of the DBF, objectives from different transmission channels are received, the objectives which are mixed together are subjected to echo separation, and therefore separated echo signals are acquired; the separated echo signals are synthesized into an echo signal with multiple phase centers, so that the performance of a synthetic aperture radar system is improved. After the radar system acquires the multiple phase centers, the radar surveying and mapping bandwidth and the azimuth resolution ratio can be increased, and the performance of interference and moving target detection is improved.

The invention discloses a multi-template monodisperse active notoginsenoside molecular imprinted polymer and a preparation method thereof. The method comprises the following steps of mixing and dissolving template molecules and functional monomers into a pore-forming agent, performing uniform ultrasonic mixing to form a template molecule-functional monomer composite, adding an effective amount of initiator and an effective amount of cross-linking agent, and performing ultrasonic nitrogen introduction and sealing; placing a molecular imprinted polymer in a shaking incubator for polymerization reaction under the protection of nitrogen and thermal initiation; after the polymerization reaction is finished, eluting an obtained molecular imprinted polymer by using a methanol-glacial acetic acid to remove the template molecules, washing the molecular imprinted polymer to be neutral by using methanol, and performing vacuum drying to obtain the multi-template monodisperse active notoginsenoside molecular imprinted polymer. Prepared precipitated molecular imprinted polymer microspheres have the advantages of high monodispersity, uniform particle diameter, size controllability, simplicity in preparation, high yield and the like; damage to binding sites and imprinted cavities is reduced, and high affinity and high selectivity of the polymer to the template molecules are ensured.

An experimental apparatus for accurately measuring the characteristic parameters of a tool holder-main shaft combined part comprises a main shaft, a main shaft end cover, a preloaded bolt, a blind rivet with an elongated connecting rod and a tool holder. The blind rivet is connected to the tool holder, and fixed to the main shaft end cover at the tail end of the main shaft through the elongated connecting rod and by means of the preloaded bolt; the torque of a torque spanner is adjusted and a foil gauge in the preloaded bolt displays the present preload on a computer through a strain gauge; therefore, the acting force or broaching force between the tool holder and the main shaft is adjusted. The tool holder, the main shaft and the tool holder-main shaft system are tested, respectively, so that the characteristic parameters of the tool holder-main shaft combined part are identified without introducing excessive errors; and the apparatus offers the basis of the prediction of cutting stability and the structure optimization of the tool holder.

The invention provides an SAR system based on a frequency modulated continuous wave (FMCW) system, comprising a transceiving antenna, a radio frequency module, a digital module and an image processingmodule, the radio frequency module is connected to the transceiving antenna and comprises a transmitting channel, a receiving channel, a frequency source and a power amplifier module; the digital module is connected to the radio frequency module and comprises a control module, a time service module, an AD module and a DA module and a record module; and the image processing module is connected tothe digital module and comprises a motion compensation module and an imaging processing module. The SAR system is built by adopting the FMCW system, main performance parameters of the system are designed based on the FMCW system, the advantages of simple system structure, small size, light weight and low cost are met, and the SAR system also has relatively high range resolution. Meanwhile, the actual application requirement is combined, and a processing method of the radar system is designed, so as to adapt to application requirements in many fields such as military reconnaissance, geologicalexploration, topographic mapping, ocean exploration as well as agriculture and forestry reconnaissance.

The invention relates to a non-contact human health monitoring device and method. The device comprises a master server and a plurality of monitoring subsystems connected with the master server, wherein the master server acquires a design drawing, the drawing comprises distribution of indoor functional areas of a house, monitoring areas are divided according to the distribution of the functional areas, the monitoring areas are in one-to-one correspondence with the monitoring subsystems, each monitoring subsystem comprises a millimeter wave radar, an infrared camera, a pickup and a visible light camera, and the master server is connected with an echo signal processor, an image processor and a voice signal processor. The method comprises the steps of acquiring human vital sign data of an old person located in a sensor range, then acquiring body temperature, heartbeat and breathing data of various moving postures and quiet postures, judging abnormal conditions and health levels of the body temperature, heartbeat and breathing data, and performing health early warning. The non-contact human health monitoring device and method realize automatic real-time monitoring for the old person, feed back the health state of the old person, and reduce the care difficulty of relatives of the old person.

The invention provides a method for fast detecting metabolites with complex compositions, stepwise and classifiedly widely forecasting metabolic pathways and comprehensively building a 'prototype component-metabolite' associated network aiming at problems that complex compositions are low in concentration, large in interference, wide in metabolizing, lack of standard substances, numerous and jumbled in data and difficult to analyze in biological matrixes. The method includes the following steps: 1 preparation and biological sample preparing, 2 multi-stage mass spectrometric detection, 3 essential component selection and interference suppressing, 4 internal prototype component confirmation, 5 material group in vivo and vitro associated network building, and 6 metabolic pathway forecasting and confirmation, and metabolite structure identification. All the steps can achieve automated operation by aid of computer programming and are easy and convenient to operate, accurate and efficient. The method does not rely on standard reference substances or prototype component structures, solves the technical problem of 'not targeted' whole composition analysis and pesticide effect substance basic explanation of single or complex drugs in vitro, and is suitable for research in various fields including environment, medical professionals and food.

The invention discloses a blood leucocyte separating medium and application thereof, a preparation method of the blood leucocyte separating medium, and a blood leucocyte separating vacuum blood collection tube with the blood leucocyte separating medium and application thereof. The blood leucocyte separating medium comprises glucan T500, hydroxyethyl starch, meglumine diatrizoate, water, sodium citrate, NaN3, poly(diallyldimethylammonium chloride) and polyvinyl pyrrolidone, the proportion of parts by weight of which is 18.5-21.5:1.5-2.5:2-3:69:3.8:0.1:0.05-0.15:2-3. The invention has the advantages that clinical blood collection and anticoagulant leucocyte seperation can be completed at a time, the sodium citrate in the blood leucocyte separating medium and calcium ions in blood are chelate and anticoagulant, the technical problem of damaging the liquid level layer of the separating medium does not exit, a supernatant liquor is sucked up without needing centrifugation after natural precipitation, a complex cell seperation technology is transformed into a simple blood collection seperation process, the processes are easily united, the repeatability of test results is good, and the quality controllability is strong.

The invention provides a coalescence degreaser for oilfield sewage treatment. The coalescence degreaser comprises a tank body, a flow stabilizing device, a rectifying device, a primary filtering device and an oil gathering device; the tank body sequentially comprises a lining layer formed by jet yarns in a jet molding mode, a structural layer formed by resin and fiber material composite materialsin an enveloping and winding mode and an outer surface layer formed by gel coat resin in a spraying mode from inside to outside in the thickness direction of the tank wall. The oil gathering device comprises a coalescence separation corrugated plate and a supporting piece. The thickness of corrugated plates in the prior art is reduced to increase the cross sectional area of a water flow channel between the adjacent corrugated plates, so that the sewage treatment capacity is greatly improved; and on the premise that the sewage treatment efficiency is not reduced, namely, the cross section of the water flow channel is kept unchanged, the arrangement number of the corrugated plates is greatly increased, so that the contact area of the corrugated plates and sewage is increased, and the oil gathering efficiency and effect are improved.

The invention provides a basketball competing layup blocking trainer, and relates to the field of sports equipment. The basketball competing layup blocking trainer, a piston plate is arranged on the inner side of the closed pipe, the left side of the closure tube is communicated with a catheter, the left side of the box body is provided with an opposing cavity body, The inner cavity of the opposing cavity is provided with an air bag, the right side of the closed tube is communicated with a connecting tube, the left side of the top of the conductive rod is fixedly connected with a lifting rod,the left side of the top surface of the box is penetrated with a guide sleeve, the top of the lifting rod is connected with a shield, and both sides of the bottom of the box are provided with rollers.The attacker needs to unlock the opposing cavity in order to put the basketball into the basket, Thus, after the air in the air bag passes through the extrusion, the air in the air pressure tube canlower the shielding member and drive the shielding member to rise, so that the rising shielding member can have the effect of shielding the attacking player, and thus the effect during training can beimproved.

The invention discloses a carrier aggregation-based inter-femtocell distributed interference coordination method. The method comprises the following steps of: determining all component carriers participating in carrier aggregation in a wireless communication network through the femtocell; initializing component carriers of each femtocell by employing a method for initializing all the component carriers; calculating a signal interference noise ratio on each component carrier occupied by each femtocell according to received power of a reference signal, and establishing a local component carrier blocking tree; calculating a release probability of each component carrier according to the local component carrier blocking tree; releasing the component carriers through the femtocell according to the release probability, and reconfiguring the component carriers. The interference difference conditions among different component carriers in the same femtocell are considered and are reflected in the established local component carrier blocking tree, the component carriers are reconfigured by combining the interference dimension and interference strength information of the interference stressed by component carrier, and a novel direction is provided for inter-femtocell interference coordination.

The invention relates to the technical field of communication, in particular to a pseudo code synchronization method and a pseudo code synchronization device for non-uniform spread spectrum. The method comprises the following steps: searching and capturing signals according to the length of a half bit; Comparing the current spread spectrum code half-bit amplitude with a capture threshold, and entering a tracking state if the current spread spectrum code half-bit amplitude is greater than the capture threshold; carrying out Coherent accumulation in a half bit, and carrying out incoherent accumulation in a preset bit period, so that an optimal sampling point is obtained to adjust a code phase, and a signal received by a receiving end and a signal sent by a sending end are synchronized. According to the method, the half-bit search code loop is adopted, large interference can be resisted, stable code loop tracking can be carried out under the condition of low noise, and the method has theadvantages of saving resources and being stable in processing.

The invention discloses a sterilization process of food packaging paper. The sterilization process comprises the steps that a quick-kill type sterilizing agent and an anti-corrosion type bacteriostatic agent are added into a tank of a starch system; particularly, an RX9100 bacteriostatic agent is added into a spraying starch preparation tank, an XD3899 sterilizing agent and the RX9100 bacteriostatic agent are added into a spraying starch storage tank, and the XD3899 sterilizing agent is added into a spraying starch supply tank. According to the sterilization process, the quick-kill type sterilizing agent and the anti-corrosion type bacteriostatic agent are added into the starch system, so that the sterilization and the bacteriostat can be effectively achieved, the interference of a medicament to the growth of bacteria is increased, the production and the development of the bacteria resistance are delayed, the prevention and control effect is improved to achieve the aim of effective sterilization and bacteriostat, and the pesticide using cost is reduced.

The invention discloses a cell selecting and switching method and system in a relay network, used for solving the technical problem of overlong time delay for selecting and switching a cell when a relay station and a user terminal belonging to the relay station perform cell selection and switching in batch under the conditions that the relay station is removed or logged in again and the like. According to the cell selecting and switching method and system disclosed by the invention, by setting selecting and switching identifications, the number of times of signaling interaction negotiated among a service base station or relay station, an anchorage base station or relay station and a user terminal is reduced, thereby reducing the time delay for selection and switching. In the invention, the selecting and switching identifications corresponding to the adjacent base station or relay station other than the anchorage base station or relay station are set to be in an asynchronous or delayed synchronous state, and the inter-cell interference of the adjacent base station or relay station on the user terminal is increased, so that the base station or relay station synchronous with the user terminal in the measurement result of the user terminal is the first choice when the service base station or relay station selects the anchorage base station or relay station, and the probability of wrong selection and switching is reduced.

The invention discloses an automobile muffler which comprises a casing, an air inlet pipe, an air outlet pipe and a primary resonance tube and further comprises at least three baffle plates and at least one secondary resonance tube; the outer edges of the baffle plates are hermetically connected with the inner wall of the casing and divide the interior of the casing into a front cavity, middle cavities and a rear cavity; a first through hole is formed in the pipe body of the air inlet pipe positioned in one middle cavity; the primary resonance tube is communicated with the front cavities and the rear cavities; and one end of the secondary resonance tube is positioned in one front cavity, passes through at least one middle cavity and extends to the next middle cavity. According to the invention, the interior of the muffler is divided into the front cavity, the plurality of middle cavities and the rear cavity, which are independent from one another, by the baffle plates; air enters the rear cavity from one port of the air inlet pipe, exchanges continuously at the first through hole in the pipe body of the air inlet pipe, then flows to the front cavity through the primary resonance tube and the secondary resonance tube, and is discharged from the muffler through the air outlet pipe; and meanwhile, air interferes in the cavities, so that noise of all frequencies is eliminated.

The method includes: a) presets a threshold T1 of preamble detection false alarm probability P1 as the lowest threshold of the threshold T; b) determines the probability threshold P2 making the lack of demodulation resource in term of the preamble detection false alarm probability P1, and periodically counts the preamble detection probability P3 in a certain period for user; c) decides if the P3 is more than P2; if yes, tunes the T into T' in term of the ratio of P3 to P2; otherwise tunes the T into T' in term of the ratio of P3 to P2; the T' and T' are the current preamble detection threshold varied along with the ratio of P3 to P2.

The invention provides a steel bar capable of suppressing the interference of reinforcing steel bars. The steel bar (1) is used as the main reinforcement of steel bar concrete and the diameter of the end of the steel bar is expanded compared with the diameter of the steel bar body (2). The outer periphery of the steel bar is formed with the thread portion (3) of a male screw (4). The thread number of the male screw (4) is 6-9. The ratio (d3 / d1) of the small-diameter of the male screw (4) to the diameter of the steel bar body (2) is 1.05-1.50. The corner (5) at the edge of the thread portion (3) with the steel bar body (2) is preferably formed to be round. In addition, a round corner is formed by the die forging of the thread portion (3) formed by the diameter expanding of the end of the steel bar compared with the steel bar body (2). The diameter of the round corner is preferably to be 1-3 times of that of the pitch of the male screw (4).

The invention provides a mobile phone card with a radio frequency identification function. A signal receiving and emission processing chip and an antenna coupling circuit are added to the mobile phone card, and an L-shaped ferrite magnetic core is arranged in an antenna. The antenna coupling circuit can enable the efficiencies of emission signals and receiving signals to reach the maximum by adjusting the resistance value and capacitance value of the antenna coupling circuit itself. In addition, an L-shaped magnetic core antenna can increase card reader antenna coupling and metal interference resistance, and the L-shaped ferrite magnetic core is employed to enable magnetic lines in a vertical direction and a horizontal direction to penetrate the inside of the antenna such that the signal intensity is enhanced, and the communication quality is improved. The PCB antenna in the mobile phone card provided by the invention is different from a flexible PCB antenna in the prior art, the flexible PCB antenna in the SIMPass antenna scheme in the prior art has to be folded up in a mobile phone and is easily damaged after being folded for multiple times, however, the PCB antenna provided by the invention does not have to be folded. The mobile phone card provided by the invention can well perform a near-field payment function.

The invention relates to the production of double-shell shellfish seedlings in aquiculture, in particular to a chemical method for preventing atrina pectinata larvas from floating adhesion, and solves the problems of the floating adhesion of the larva. In the chemical method, the surface activity of larva shells is changed to prevent the larva from the floating adhesion by treating the atrina pectinata larvas with a nontoxic surfactant, namely alkyl glycoside (APG), for a period of time. Fertilized eggs of the atrina pectinata develop to a D-type larva period at the temperature of 25 DEG C after 20 to 30 hours; and D-type larvas can be treated by using the APG after the shell strength is increased after 48 hours. When in use, APG stock solution is uniformly mixed with sea water in a volume ratio of (1-2):50,000 (or at a volume concentration of 20 to 40 ppm); putting enriched larvas into a 300-mesh silk screen; flushing the larvas by using the solution for 15 to 20 minutes; and putting the larvas into water after flushing for a plurality of times by using fresh sea water, so that the floating adhesion phenomenon of the larvas is prevented. The floating adhesion of the larvas treated by the method can be reduced by 92 to 99 percent; and the larva survival rate can be kept over 96 percent.

The invention provides a multi-rotor wing unmanned aircraft which comprises a flight control assembly, a rack, a plurality of motors and a plurality of propellers. The rack comprises a machine body, a plurality of supports and a plurality of connectors. The flight control assembly is arranged on the machine body, each support comprises a supporting rod and a swing rod, the supporting rods are connected with the machine body, and one end of each swing rod is movably connected with the corresponding supporting rod through the corresponding connector. The included angles between the supporting rods and the swing rods are changeable, the motors are connected to the other ends of the swing rods, and the propellers are connected with the motors. According to the multi-rotor-wing unmanned aircraft, the angles between the supporting rods and the swing rod are adjustable, and adjustment of the inclined angles between the propellers and the machine body are achieved; the inclined angles between the propellers and the machine body can be adjusted according to the specific flight environment, the aircraft can adapt to various flight environments, the flight stability can be effectively maintained in various flight environments, and the aircraft has the advantages of being wide in application range and high in flight stability.

The invention discloses a cognitive training and recovery system based on a virtual reality technology. The cognitive training and recovery system comprises a login module, a task module, an animationmodule, a control module and a database. The login module is used for a preparation stage before task execution, parameter setting is carried out according to the control panel, scene switching is carried out after setting is completed, and save is used for storing in the control panel after switching is completed. The task module mainly comprises three functions of task generation, task result judgment and task result feedback; the animation module is divided into an animation setting part and an animation triggering part; and the control module is divided into a control triggering part, a control setting part and a control storage part. The database stores all the data into the database, meets addition, deletion and modification of different conditions, and exports each experiment result from the database into a log file. The system can help medical staff to record the conditions of the patient in the aspects of operation and cognition, and the conditions are improved through fixedtraining and questionnaire.

The invention is suitable for the technical field of three-dimensional reconstruction, and provides a three-dimensional reconstruction method and device for objects. The device comprises a first light capture module, a second light capture module, a light generation module, a target and a processing module; in the direction of light emitted by the light generation module, the target is a double-layer or multi-layer closed ring-shaped structure, and is arranged between the light generation module and a target object; the light generation module is used for generating a source light to ensure that the source light is emitted to the target object through the target and then reflected to the first light capture module; the second light capture module is used for capturing a second light reflected by the target object; the processing module is used for carrying out three-dimensional reconstruction on the target object according to a first light captured by the first light capture module and the second light captured by the second light capture module. The device is capable of strengthening the ability of resisting the interference of external environmental disturbances; and the measurement precision is not influenced by the small-amplitude movement of the target of the light generation module due to the external vibration, so that the measurement precision is relatively high.

This propeller with a small duct is characterized by comprising the following: a propeller (10) which is attached to the stern of a ship hull (1); and a duct (20) attached in front of said propeller (10). Said propeller with a small duct is further characterized in that: the diameter (Ddin) of the duct (20) is 20% to 50% of the diameter (Dp) of the propeller (10); and the pitch (H) of the propeller (10) decreases progressively in the radial (R) direction, with the maximum pitch at the bases of the blades and the minimum pitch at the tips of the blades. By using an energy-efficient device that combines characteristics of large ducts and mid-sized ducts, adjusting the shape of the propeller (10), and disposing the small duct (20) near the front of said propeller (10), cavitation is reduced in ocean areas in which the degree of loading is increased, and interference from the small duct (20) is utilized to optimize the load distribution in the radial (R) direction of the propeller (10), which controls efficiency.

The invention discloses a pedestrian re-identification method and system based on unsupervised cross visual angle metric learning, and mainly solves the problems that accurate modeling of pedestriansis difficult and a traditional metric learning method needs a large amount of supervised information. The method comprises the following implementation steps: (1) carrying out feature extraction; (2)constructing a common and characteristic projection matrix; (3) carrying out unsupervised cross visual angle measurement learning; (4) constraining consistent distribution of downlink person characteristics of different cameras; (5) optimizing a projection matrix; and (6) projecting the query samples and the test sample set to a potential feature space, and comparing the feature distances to obtain a sorting result of the test sample set. According to the method, pedestrian characteristics are decomposed into common characteristics and characteristic characteristics, so that the pedestrian characteristic expression precision is improved. Meanwhile, the provided unsupervised metric learning method can better meet the actual requirements of a large number of monitoring networks at present, and the method can be applied to the fields of intelligent monitoring, traffic control, criminal investigation assistance and the like.

The invention relates to the technical field of insect breeding, in particular to a chilo suppressalis breeding method. An egg mass is positioned at the intersection of a sheath of a first rice stem and a main stem, and hatched larvae bore through the first rice stem to eat; after the larvae grow to an age of 5, the larvae are taken out from the first rice stem and fed on a second rice stem, wherein the first rice stem refers to a fresh rice stem with roots and the sheath in or after a round stem elongation stage, and the second rice stem refers to a knotted fresh rice stem in or after the round stem elongation stage. The chilo suppressalis breeding method has advantages of high larva and pupa survival rate, convenience in pupa searching, suitableness for researching and availability for large-scale breeding.

The invention provides a method for extracting and separating silver by a double-aqueous phase system. The method comprises the following steps: carrying out mixed extraction on a to-be-separated silver-bearing solution, the double-aqueous phase system and a complexing agent, and carrying out stewing layering, so that silver ions are separated and enter an organic phase, wherein the double-aqueous phase system comprises C2-C3 alcohol, water and a salting-out agent, and the complexing agent is selected from one or more of potassium thiocyanate and hexadecyl trimethyl ammonium bromide. According to the method provided by the invention, the mixed exaction of silver is realized by the double-aqueous phase system and the complexing agent, that is, in the double-aqueous phase system formed by the alcohol, water and the salting-out agent, an ionic associate formed by the extracted silver and the complexing agent, the extraction effect is good, and the extraction rate is high. Compared with the traditional organic solvent extraction method, the method has the advantages of small interference, quick separation, separated phase cleaning and good extraction effect, and meanwhile, the use of toxic reagents is used, thereby being environmentally friendly.

The present disclosure provides a SAR system based on the FM continuous wave system, including: a transceiver antenna; a radio frequency module, connected to the transceiver antenna, including a transmitting channel, a receiving channel, a frequency source, and a power amplifier module; a digital module, connected to the radio frequency module, including Control module, timing and timing module, AD module, DA module and recording module; image processing module, connected to the digital module, including motion compensation module and imaging processing module. The SAR system is constructed using the frequency modulation continuous wave system, and the main performance parameters of the system are designed based on the FMCW system, which meets the advantages of simple structure, small size, light weight, and low cost of the system, and has high distance resolution. And combined with the actual application requirements, the processing method of the radar system is designed to meet the application requirements of many fields such as military reconnaissance, geological survey, topographic mapping, marine survey, agricultural and forestry survey, etc.

The invention provides a method and device for generating an adversarial sample, electronic equipment and a medium, and relates to the technical field of artificial intelligence, in particular to the technical field of behavior recognition, adversarial defense training and the like. According to the implementation scheme, a first human skeleton formed by connecting a plurality of joint nodes and corresponding skeleton data are obtained, and the skeleton data comprise first rectangular coordinate representation of the first human skeleton in a preset rectangular coordinate system; determining a rectangular coordinate value of a root node in the plurality of joint nodes based on the first rectangular coordinate representation; constructing a spherical coordinate system based on the first human skeleton; determining a spherical coordinate value corresponding to each joint node in other joint nodes except the root node in the plurality of joint nodes in a spherical coordinate system; and applying an interference value to the angle of the bone in the first human skeleton, and determining an adversarial sample based on the applied interference value and the corresponding spherical coordinate value of each of the other joint nodes in the spherical coordinate system.

The invention provides a magnetofluid filled MNF and FBG cascaded temperature and magnetic field sensing device. The magnetofluid filled MNF and FBG cascaded temperature and magnetic field sensing device comprises an ASE light source (1), a circulator (2), a double-parameter measurement sensing device (3), a spectrometer (4), a demodulator (5) and a computer processor (6). According to the invention, a Mach-Zehnder interferometer principle and an FBG sensing principle are adopted, sensing is carried out by cascading a Mach-Zehnder structure of a magnetic fluid material packaged by a SiO2 nanotube with an FBG, a light beam generated by an ASE light source generates an interference spectrum in a Mach-Zehnder interference structure, measurement of a magnetic field is realized through detection of the interference spectrum, and the magnetic field is measured through a reflection peak generated by the FBG. The temperature change is detected, demodulated through the demodulator and processed on the computer processor, and the purpose of digitization is achieved. The stress and the magnetic field are measured at the same time, cross sensitivity is avoided, the size of the sensor is reduced, the stress and the magnetic field can be output on a computer processor, and the purpose of monitoring the stress and the magnetic field at the same time in real time is achieved.

The invention discloses an ultrasonic resonance frequency matching device, which comprises a water intake tank, an ultrasonic vibrator, an ultrasonic control circuit, an X-axis drive mechanism, a Y-axis drive mechanism and a casing. The control circuit is used to adjust the ultrasonic frequency emitted by the ultrasonic vibrator. The four sides and the bottom of the water tank are equipped with a foldable structure. The X-axis drive mechanism is used to drive the two sides of the water tank located in the X-axis direction by means of a foldable mechanism. For expansion or contraction, the Y-axis driving mechanism is used to drive the two sides of the water intake tank in the Y-axis direction to expand or contract by means of a foldable mechanism, and the opening of the water intake tank faces outward. The invention can clean or pulverize the sample in multiple frequency bands, and can also adjust the size of the water tank to make the ultrasonic incident wave and the reflected wave interfere and resonate in the same phase, thereby improving the pulverization or cleaning effect of the sample.