46results about How to "Can be integrated" patented technology

The invention relates to a middleware architecture of an Internet of things, which comprises a reader layer and an application layer, and is characterized in that: the middleware of the Internet of things comprises an edge layer and an integration layer arranged between the reader layer and the application layer in turn, wherein the edge layer periodically polls a reader through an edge server soas to eliminate repeated operation, executes filtering and equipment management function, simultaneously generates application event management protocol ALE events and transmits the ALE events to theintegration layer; the integration layer receives a plurality of ALE events and combines the ALE events into a workflow; and the workflow is used as one part of a larger service flow to be in contacted application to different systems. In addition, the invention provides SOA architecture-based middleware of the Internet of things. The middleware architecture of the Internet of things is an intermediate program architecture for implementing data transmission, filtering, data format conversion between RFID hardware equipment and an application system, and reduces the difficulty of application development. Therefore, a developer calls through the middleware without directly facing a bottom architecture.

The invention relates to a fever disease deep-learning auxiliary diagnosis system based on text medical history for children. The system includes a medical history input module, a text structuralizingmodule, a characteristic extraction module and a result output module, wherein the medical input module is used for receiving the medical history in a free text form; the text structuralizing moduleis linked with the medical history input module and adopts a natural language processing method for processing the medical history in the free text form to obtain structuralized data; the characteristic extraction module is linked with the text structuralizing module and used for extracting diagnosis characteristics from the structuralized data; the result output module is linked with the characteristic extraction module and used for utilizing a neural network to carry out prediction of disease classification on the current medical history records according to the extracted diagnosis characteristics and a diagnosis model learned from the past medical history records, and then outputting diagnosis results. Compared with the prior art, on the basis of a natural language processing and diagnosis model of deep learning, the diagnosis accuracy of the system can exceed a grassroots doctor level, the system can function stably, and therefore a real help can be offered to grassroots medical workers.

The present invention discloses a loop compensation method. The method includes the following steps that: a switching circuit receives error amplification signals outputted by a switching power source feedback network and outputs the error amplification signals to a lag compensation circuit under the control of a control signal with a predetermined duty ratio; the lag compensation circuit generates compensated signals and transmits the compensated signals to a sampling circuit; and the sampling circuit receives the compensated signals and transmits the compensated signals to a duty ratio control circuit of a switching power source main power switching tube under the control of the other control signal with a predetermined duty ratio. With the loop compensation method of the invention adopted, control circuits can be wholly integrated in control devices, and therefore, the number of peripheral components can be decreased, and power source cost can be decreased, and at the same time, the compensated signals can be stored completely, and therefore, the distortion of the compensated signals when the switching circuit is switched off can be avoided. The invention also discloses a loop compensation circuit corresponding to the above method.

The invention discloses a reflection type superconducting transmission line resonant cavity. The reflection type superconducting transmission line resonant cavity includes a dielectric substrate; the dielectric substrate is provided with two parallel coupling microstrip transmission lines, two toothed coupling capacitors and two microwave access electrodes; one end of each coupling microstrip transmission line is suspended, and the other end of the coupling microstrip transmission line is coupled to one microwave access electrode through one toothed coupling capacitor; and the coupling microstrip transmission lines, the toothed coupling capacitors and the microwave access electrodes are respectively made of aluminum superconducting materials. The reflection type superconducting transmission line resonant cavity of the invention only occupies a small space, and can be integrated on the same substrate together with quantum bits, and therefore, the reflection type superconducting transmission line resonant cavity has excellent integratability; the reflection type superconducting transmission line resonant cavity can be excellent coupled with the quantum bits, so that quantum information exchange can be effectively completed; the reflection type superconducting transmission line resonant cavity can maintain a low-energy few-photon resonant state, so that accurate transmission of quantum information can be ensured; influence of environment noises can be effectively eliminated; adjustment of the Q value of the resonant cavity can be facilitated; and the balance of quantum information maiming ability and exchange ability can be also realized.

The invention discloses an integrated Internet of Things (IOT) smart manhole cover which includes a manhole cover body and a functional circuit system installed on the manhole cover body. The functional circuit system includes a manhole cover position sensor, a controller, a LoRa module and a power module. The controller adopts a Bluetooth system on chip (BLE SoC), and the BLE SoC includes a Bluetooth wireless transceiving interface and a UART interface. A Bluetooth antenna is connected to the Bluetooth wireless transceiving interface, the UART interface is connected to the LoRa module, a wireless transceiving antenna is arranged on the LoRa module, and the power module provides a working power supply for the manhole cover position sensor, the controller and the LoRa module. The manhole cover body is provided with an antenna installation window, the upper portion of the antenna installation window is provided with a plurality of reinforcing ribs with the two ends fixed in the manhole cover body, a glass fiber reinforced plastics baffle is disposed below the reinforcing ribs, and the wireless transceiving antenna of the LoRa module is fixed to the lower portion of the glass fiber reinforced plastics baffle and located between projection in the vertical direction of the two adjacent reinforcing ribs. According to the integrated IOT smart manhole cover, manhole cover IOT networking and real-time monitoring are achieved by utilizing a LoRa IOT technology, and the integrated IOT smart manhole cover has low power consumption, low cost and excellent real-time performance.

The invention discloses a wafer copper film thickness off-line measuring module control system which adopts a two-level control module of an upper layer control system and a bottom layer control system. The upper layer control system and the bottom layer control system are in physical connection through industrial Ethernet. According to the bottom layer control system, a PLC is adopted to be in charge of directly controlling all parts of an off-line measuring module. According to the upper layer control system, an IPC is adopted to monitor the states of the off-line measuring module in real time through the PLC, operational software is provided for a technologist, and managing of data is achieved. According to the technological requirements, two main measurement patterns including an XY pattern and a global pattern are set. The technological procedures are divided into the standardization process and the measurement process. According to the upper layer control system software, a drawing subprogram is achieved through Matlab, and the drawing subprogram is called flexibly through a main program. The wafer copper film thickness off-line measuring module control system has the advantages of being lossless in test, easy to operate, convenient to maintain, safe and reliable.

The invention discloses a device and method for measuring the overall bulk modulus of cells based on an ultrasonic standing wave sound field. The measurement method comprises the following steps: according to Y-direction initial positions of each cell at the force start time of the standing wave sound field, calculating an ideal motion trajectory curve by using a Y-direction motion control equation of the cells in combination with field intensity parameters of the standing wave sound field, fitting the actual motion trajectory curve of the cells with the ideal motion trajectory curve of the cells through a least square method, and calculating the overall bulk modulus of the cells by combining the field intensity parameters of the standing wave sound field; due to the fact that a micro-fluidic channel chip is adopted, the cells are subjected to non-contact force motion by combining the ultrasonic standing wave sound field generated in a micro-flow channel of the piezoelectric ceramic, and the overall bulk modulus of the cells is obtained through conversion by measuring the motion trajectory of the cells, such that the problems that the local deformation amount is large and the measurement is inaccurate due to the contact type measurement method are effectively avoided, contact damage to the cells is also avoided, the activity of the cells is effectively ensured, continuous measurement is realized, and the detection flux is relatively high.

The invention discloses a device for realizing equilibrium in strength of full optical signals, which can be applied in a space laser communication system. The device is made of a nematic liquid crystal mixture with third-order nonlinear optical characteristics, utilizes the Kerr optical effect caused by the third-order nonlinearity thereof to achieve spatial self-phase modulation related to light intensity and to form spatial optical field distribution related to the light intensity, and achieves the equilibrium in intensity changes of input light through controlling light penetration areas; thereby obtaining output signals with similar light intensity distributions.

The invention provides a c-axis tilt gallium nitride FBAR piezoelectric mass sensor which comprises a sensitive layer, an upper electrode, a signal terminal, an earthing terminal, a c-axis tilt gallium nitride FBAR piezoelectric thin film, etching holes, a lower electrode, a Bragg reflection layer and a substrate. The signal terminal and the earthing terminal are distributed at the top of the c-axis tilt gallium nitride FBAR piezoelectric thin film. The upper electrode is connected with the signal terminal and coated with the sensitive layer. The lower electrode is connected with the earthing terminal through the etching holes formed in the piezoelectric thin film. The lower electrode is arranged on the Bragg reflection layer in a deposition mode. The Bragg reflection layer is arranged on the substrate in a deposition mode. According to the c-axis tilt gallium nitride FBAR piezoelectric mass sensor, the c-axis tilt gallium nitride piezoelectric thin film is adopted for the piezoelectric thin film, certain c-axis inclination angle is preferred, and the mass sensor can normally work under a humidity environment or a liquid phase environment.

The invention discloses a method for realizing a real-name-system control system of a telecom value-added service, which consists of a master control core module, a slave control core module, a radio frequency antenna receiving module, an antenna transmitting module, a power management module, a wireless GPRS communication module, an LCD module, a keyboard interactive module, a fingerprint reorganization module, a peripheral interface, etc. The method recognizes the complete individual biological traits of users, collects personal identity information fast, and finishes the real-name registration of the users in a telecommunication service network, which can be widely applied to all service networks of China Telecommunications, China Mobile, China Unicom and China Netcom and can reduce various uncertain criminal activities before the telecom service, thereby greatly providing transparency of the telecom service for users by the real name method. The method is mainly realized for solving the defects of difficult registration of a telecom service terminal, high information collecting cost and insufficient digitalization degree, as well as is characterized by high integration, stable system, good reliability, small volume, low cost, convenient operation, safe data, etc., thereby having practical application value for promotion in a telecom service control terminal.

The invention discloses a phase shifting unit and an MEMS (micro-electromechanical system) terahertz phase shifter composed of the same, which mainly solve the problems that the existing terahertz phase shifter is overmany in parasitic parameters, strong in process sensitivity, overlarge in driving voltage and the like. The phase shifting unit comprises a substrate, CPW signal line ground wires, grooves, CPW signal lines, an MEMS movable beam and a CPW signal line, wherein the CPW signal line ground wires are arranged at two opposite sides of the substrate, the grooves are arranged at the opposite ends of the CPW signal line ground wires, the CPW signal lines are inserted into the CPW signal line ground wires through the grooves and are provided with open circuit terminals, the two ends of the MEMS movable beam are respectively connected with the CPW signal lines provided with the open circuit terminals, the CPW signal line is arranged on the substrate and is positioned below the MEMS movable beam, one CPW signal line ground wire is provided with a slot communicated with the groove on the CPW signal line ground wire along the length direction of the CPW signal line ground wire, an electrostatic drive offset line is arranged in the slot, one end of the electrostatic drive offset line is connected with the CPW signal lines provided with the open circuit terminals, the other end of the electrostatic drive offset line is connected with an offset electrode positive pole bonding pad, and the CPW signal line and the CPW signal lines provided with the open circuit terminals share the CPW signal line ground wires.

The invention provides a method for transmitting orbital angular momentum in a waveguide of a photonic integrated chip. Through a femtosecond laser direct-writing technology, the annular waveguide used for transmitting a multi-order orbital angular momentum mode is machined in transparent borosilicate glass through multiple scanning. The chip prepared through the method can simultaneously and stably transmit the +1 order, the -1 order, the superposition state of the +1 order and the -1 order, and the 0 order, the coupling efficiency is up to 60%, and meanwhile, the fidelity reaches 80% or above; and in addition, the quantum state space is greatly increased through the high dimensionality of the orbital angular momentum and manipulation of the superposition state, and thus the quantum computing ability can be greatly improved potentially through the modes of on-chip manipulation hyper-entanglement and the like.

The invention discloses a device and method capable of realizing full light intensity equalization in digital space or optical fiber optical communication system. The device adopts an optical material with a second-order nonlinear optical characteristic and makes use of nonlinear phase shift caused by cascade nonlinear effect to realize optical phase modulation related with light intensity. The device also realizes variation in output light intensity through parts such as a polarizer, an analyzer and a phase compensator, realizes equalization of variation in input light intensity by setting a due phase delay relationship, and obtains the output signal with nearer light intensity distribution.

The invention discloses a method for realizing a system of a barcode real-name system of train tickets; the system comprises a main control core module, a slave control core module, a radio frequency antenna receiving module, an antenna transmission module, a power management module, a special transmission network module for train-ticket booths, a liquid crystal display module, a keyboard interaction module, a local print module and a peripheral interface module, etc.; the system binds the unique personal identity information (such as the second generation identification card number and the electronic passport number) in the two-dimensional barcode of each train ticket by reading the personal information data of users; system data of database is matched when checking tickets, and the registration of the real-name system of users in a service system of the railway transport of passengers, thus being applicable to all the distribution outlets of train tickets of national railways widely, reducing each uncertain factor before the sale and the purchase of the train tickets of railways and improving the transparency of the train tickets in services of railway transport passengers through the method of the real-name system. The invention mainly solves the defects in the service of railway transport of passengers such as the real-name registration is hard, the cost of information collection is high and the degree of digitization is not enough, etc., is characterized by high integration, stable system, good reliability, small size, low cost, convenient operation and safe data, etc., and has application value for practical promotion in the ticket terminal of services of railway transport of passengers.

The invention relates to an intelligent powder barrel used for a laser cladding powder feeder. The intelligent powder barrel comprises a powder barrel body, a powder barrel mounting head, a powder barrel base, a powder barrel cover, powder barrel supporting rods, a vent pipe, a powder feeding scraping disc cover plate, an ultrasonic level meter, sealing joints and a data analysis module. The powder barrel body is fastened between the powder barrel mounting head and the powder barrel base through the powder barrel supporting rods. The powder barrel cover is in screw joint to the powder barrel mounting head. The powder barrel base is mounted on the powder feeding scraping disc cover plate. The vent pipe is located in the powder barrel body, one end of the vent pipe is mounted on the powder barrel base and communicates with the powder barrel body and a powder feeding scraping disc, and the other end of the vent pipe stretches to the top of the powder barrel body. A mounting hole is formedin the powder barrel cover, and the ultrasonic level meter is located in the mounting hole and is fastened and sealed in the mounting hole of the powder barrel cover on the inner side and the outer side of the powder barrel cover through the two sealing joints. The data analysis module is connected with the ultrasonic level meter. According to the intelligent powder barrel, dynamic balance of theair pressure of the powder barrel body and the powder feeding scraping disc is achieved, and meanwhile real-time monitoring and precise alarm responding to the quantity of residual materials in the powder barrel body are achieved.

The invention provides a fake-licensed vehicle automatic detection method. According to the method, a vehicle picture is obtained based on a bayonet camera; pictures of all parts of a vehicle are detected through vehicle attributes, the pictures of the vehicle and the pictures of all parts are integrated to serve as input of a picture vehicle searching algorithm for feature extraction, the input is compared with a vehicle information base found through a license plate number recognized through a license plate, and then whether the vehicle is a fake-licensed vehicle or not is judged. The invention further provides an automatic fake-licensed vehicle detection system. The fake-licensed vehicle automatic detection method and the fake-licensed vehicle automatic detection system provided by theinvention are high in practicability, and can meet the accuracy of fake-licensed vehicle detection in most scenes; the adopted algorithm is low in complexity, high in integration and high in operationspeed, and the real-time performance can be guaranteed.

The invention closes a device and method for separating circulating tumor cells and microembolus of the circulating tumor cells by a double-frequency standing wave sound field. A core part of the device is composed of a flow pass base, first piezoelectric ceramic and second piezoelectric ceramic, wherein two flow passes are arranged on the upper surface of the flow pass base, and the first piezoelectric ceramic and the second piezoelectric ceramic are in contact with the bottom surface of the flow pass base, are separately located below the two flow passes, and are used for alternately generating the double-frequency standing wave sound field; the liquid outlet end of a first flow pass extends to bifurcations on both sides from a three-point-line position to form a first liquid outlet anda second liquid outlet with unequal widths, the liquid outlet end of the second flow pass extends to the bifurcations on both sides from the three-point-line position to form a third liquid outlet anda forth liquid outlet with unequal widths, and the first liquid outlet communicates with a forth liquid inlet in a smooth transition mode; and due to the fact that a cascaded two-stage channel is adopted, the alternating action of the double-frequency standing wave sound field is combined, degree of precision and accuracy of sound field separation are improved, activity of cells is effectively guaranteed, and the separated cells have large flux, unobstructed flow, high sensitivity, high integratability, good separating effect and high separating efficiency.

The invention relates to a multi-core optical fiber resonant cavity gas sensor which comprises a multi-core optical fiber, an optical resonant device, a first light guide structure and a second lightguide structure, wherein the multi-core optical fiber comprises a first optical fiber core and a second optical fiber core, and is provided with an end surface; the first optical fiber core and the second optical fiber core are exposed out from the end surface; the optical resonant device is arranged on the end surface and provided with a light input end and a light output end; the first light guide structure is arranged on the end surface, is connected with the first optical fiber core and the light input end, and is used for inputting light of the first optical fiber core into the optical resonant device; the second light guide structure is arranged on the end surface, i connected with the second optical fiber core and the light output end, and used for coupling light of the optical resonant device and outputting the light from the second optical fiber core.

The invention relates to a double-end fixed length corner cutting and perforating machine and method for furniture table leg solid wood components. The double-end fixed length corner cutting and perforating machine comprises a feeding bin, a machine body and a finished material conveying mechanism; the finished material conveying mechanism is mounted at the discharging end of the machine body; a fixed work station is mounted on a base of the machine body; a movable work station is mounted on the other side; a linear sliding rail is mounted on the base, the movable work station is mounted on the linear sliding rail, and a servo driving device is mounted on the base; a fixed length saw set, a vertical corner cutting saw set, a fixed horizontal corner cutting saw set, a horizontal drill machining set and a vertical drill machining set are mounted on a fixed workbench; a movable fixed length saw set is mounted on a movable workbench in the material feeding direction; a movable horizontal drill machining set is mounted at the position, corresponding to the fixed horizontal drill machining set, of the movable work station; a clamping conveying device is further arranged. Compared with traditional single machining, production efficiency is greatly improved, labor intensity is reduced, labor force is reduced, and the aims of downsizing staffs and improving efficiency are achieved.

The invention relates to a semiconductor volatile organic compound sensor based on a solution color-changing pigment. The semiconductor volatile organic compound sensor is designed and manufactured by adopting a standard silicon process and uses a gated horizontal bipolar junction transistor as a core part, wherein the solution color-changing pigment is used as a gas reaction film of the semiconductor volatile organic compound sensor. Meanwhile, when the semiconductor volatile organic compound sensor works under a hybrid working mode of a metal-oxide-semiconductor type field effect transistor and a bipolar junction transistor, the semiconductor volatile organic compound sensor has relatively high conduction efficiency, and further the sensing sensitivity is improved. The semiconductor volatile organic compound sensor realizes the measurement of a semiconductor volatile organic compound at a normal temperature on the premise of having the advantages of semiconductor devices, such as small volume, light weight, easiness of volume production, low cost, low power consumption and easiness of integration. According to semiconductor volatile organic compound sensor, the service life is theoretically prolonged, and the energy consumption required by a common semiconductor gas sensor when operating at a high temperature is reduced. The semiconductor volatile organic compound sensor can be applied to the fields of small environmental detection devices and the like.

The invention discloses a method for realizing real-name control system of electronic payment trading platform, which comprises a main control core module, a subordinate control core module, a power management module, a keyboard interaction module, a radio frequency transmission module, an antenna access module, a 3.5-inch LCD module, a peripheral interface module, an electronic payment trading business module, an online printing module, etc. The completed individual information or the individual information bound mobile phone identification policy of a user is collected quickly, and the collected data is transmitted to the electronic payment trading business module. When every trading is carried out, the trading payment information can be printed by online print function. The method of the invention can be extensively applied to the electronic payment trading platform in modern internet, such as large-scale electronic trading portal websites of Ebay, Taobao, and the like, and the fields such as online electronic bank trading of all banks and the like, thus improving the efficiency in all parts, and reducing worries about various uncertain electronic payment trading activities for dishonest trading, etc. The method provides users with significantly improved transparency and justice in electronic trading business. The method is mainly to overcome the shortcomings in real life that trading payment is fussy, work order is intense, network information-based degree is not high, etc. The method is characterized by high integration, stable system, good reliability, small volume, low cost, convenient operation, safe data, secret trading information, and the like, thus having application value for practical popularization in the electronic payment trading platform.

The invention belongs to the technical field of biological analysis, and particularly relates to a fluorescence sensor for simultaneously detecting hOGG1 and hAAG and a detection method and application of the fluorescence sensor. The fluorescence sensor comprises a difunctional dumbbell probe, a signal probe 1 and a signal probe 2, the difunctional dumbbell probe comprises a T7 promoter region, and is modified with a 8-oxoG and a deoxyinosine; the 5'ends of the signal probes 1 and 2 are respectively modified with different fluorophores, and the 3'ends of thesignal probes 1 and 2 are respectively modified with different quenchers . It is proved for the first time that controllable T7 transcriptional activation cyclic cascade amplification detects human 8-oxo guanine DNA glycosylase (hOGG1) and human alkyl adenine DNA glycosylase (hAAG) at the same time at the single molecular level, the method has good specificity and sensitivity, the detection limit of hOGG1 is 3.52 * 10<-8> U / mu L, and the detection limit of hAG is 3.55 * 10<-7> U / mu L; and even the glycosylase activity can be quantitatively repaired at a single cell level.

The invention relates to a mixed titanate nanoribbon supported metal palladium nanoparticle overall catalyst as well as a preparation method and application thereof. The method comprises the followingsteps: firstly, synthesizing titanate nanoribbons by using a hydrothermal method, preparing mixed titanate nanoribbons by using an ion exchange method, supporting metal palladium nanoparticles on themixed titanate nanoribbons as a carrier surface to form a Pd / MTiOx one-dimensional nano structure, and carrying out filtration pressing, thereby obtaining a porous paper-like overall catalyst. Activemetallic particles of the catalyst provided by the invention are highly dispersed into the carrier surface, and the catalyst is small in size, uniform in size and good in catalysis activity and stability; due to adoption of the paper-like porous structure, the catalyst has a high porosity, a large specific surface area, good permeability and excellent hydromechanic properties as a whole; the catalyst is simple in preparation process, easy to recycle and repeatedly use, and applicable to large-scale industrial application.

The invention provides a novel three-frequency-band three-dimensional patch antenna. The novel three-frequency-band three-dimensional patch antenna comprises a dielectric substrate which is formed by two layers of dielectric substrates, an antenna radiation main body and a power divider; the antenna radiation main body which is arranged on the surface of the dielectric substrate is a printed circuit on an upper surface of the upper layer of a dielectric slab; the power divider is arranged between the two layers of dielectric slabs; a feeding point of the antenna radiation main body is connected with the power divider through a via hole in the upper layer dielectric slab of the two layers of dielectric slabs; the dielectric substrate is connected by the first substrate which is unfolded on a first side and a second substrate which is unfolded on the second side to form into a three-dimensional shape having space angles. According to the novel three-frequency-band three-dimensional patch antenna, a first antenna and a second antenna are printed on the circuit board, a certain space angle is formed between the two substrates, and accordingly space is saved, the feeding point is led out through microstrip line to be used for being integrated on a plate with other circuit boards, and integration is achieved.

The invention provides a magnetic torquer signal processing method and system of satellite attitude and orbit control comprehensive test equipment. The method comprises the following steps: a magnetic moment signal resolving step: converting collected magnetic torquer driving current into real-time magnetic moment; a local geomagnetic field determination step: determining the local geomagnetic field intensity according to the real-time position; a magnetic control moment resolving step: resolving a magnetic control moment according to the local geomagnetic field intensity and the real-time magnetic moment information; and a step of adding the magnetic control torque to the dynamic model: establishing an attitude dynamic model, and superposing the magnetic control torque to the attitude dynamic model. The method is suitable for signal processing requirements of magnetic torquer for different satellite attitude and orbit control subsystems, so that the universality of signal processing of the magnetic torquer of satellite attitude and orbit control comprehensive test equipment is improved.

The invention discloses a device for realizing equilibrium in strength of full optical signals, which can be applied in a space laser communication system. The device is made of a nematic liquid crystal mixture with third-order nonlinear optical characteristics, utilizes the Kerr optical effect caused by the third-order nonlinearity thereof to achieve spatial self-phase modulation related to light intensity and to form spatial optical field distribution related to the light intensity, and achieves the equilibrium in intensity changes of input light through controlling light penetration areas; thereby obtaining output signals with similar light intensity distributions.

The application discloses a FET-based rectifier circuit which includes an energy storage load and a plurality of voltage rectification units. Each voltage rectification unit includes a first output end and a second output end. The energy storage load is connected in series between the first output end and the second output end of each voltage rectification unit and is configured to be charged anddischarged. Each voltage rectification unit includes a first inverter, a second inverter, a first field-effect transistor, and a second field-effect transistor, and is configured to rectify an input voltage signal. Because the field-effect transistors rectify the input voltage signal instead of rectifier diodes, the electric power consumed by the rectifier circuit is reduced, the heat generation is reduced, and integration can be achieved to reduce the occupied area of the circuit.

The invention discloses a device and method for separating circulating tumor cells and their microemboli by using a dual-frequency standing wave sound field. It is composed of the first piezoelectric ceramic and the second piezoelectric ceramic which are in contact with and located under the two flow channels to alternately generate a dual-frequency standing wave sound field; the liquid outlet of the first flow channel extends from the three-point line to both sides Two unequal-width first liquid outlets and second liquid outlets are formed, and the liquid outlet of the second channel extends from the three-point line to both sides to form two unequal-width third liquid outlets and the fourth liquid outlet, and a smooth transition between the first liquid outlet and the fourth liquid inlet; due to the use of cascaded two-stage channels, combined with the alternating action of the dual-frequency standing wave sound field, the separation of the sound field is improved. The precision and accuracy effectively ensure the activity of cells, and the separated cells have large throughput, smooth flow, high sensitivity, strong integration, good separation effect and high separation efficiency.