64 results about "Matched load" patented technology

The invention relates to the technical field of particle accelerators, in particular to a transverse feedback system with a switchable excitation direction and a control method thereof, and the system comprises a beam position detector BPM which is used for measuring a beam signal; the RF front end is used for receiving the beam signal sent by the beam position detector BPM and carrying out amplification and filtering processing; the ADC module is used for converting the beam signal into a digital signal; the digital signal processing module is used for carrying out digital signal processing calculation to obtain an excitation signal; the DAC module is used for carrying out digital-to-analog conversion; the power divider is used for adjusting the phase of the excitation signal; the exciter comprises four Kickers with electrodes, a power amplifier, a low-pass filter and a matched load and is used for applying a transverse excitation signal to the beam current, and the problems that in the prior art, a transverse feedback system Kicker occupies a large longitudinal space, the system is complex, and precision and efficiency are low are solved.

This invention discloses a dual-output control and detection circuit, including a control circuit, a first detection sampling circuit, a second detection sampling circuit, and a remote matching load circuit. The control circuit includes a drive control module, a first switch module, and a second switch module. The drive control module controls the operation of the first and second switch modules. The first switch module switches between a first control state and a second control state; the second switch module switches between a third control state and a fourth control state. The drive control module receives signals from the first and second detection sampling circuits and controls the operation of the first and second switch modules. This application uses a three-wire output, which can detect open circuit and short circuit faults when the device is not started, ensuring normal operation of the device. It has advantages such as low cost, simple implementation, high reliability, and reduced engineering costs.

The invention discloses a method and equipment for improving matching of a measured piece in an attenuation measurement system, belongs to the field of radio metering, and comprises the method for improving matching of the measured piece in the attenuation measurement system, and the core of the method is that a precise matching absorption load is added in a front-end transmission system of the measured piece; energy transmission is realized on a waveguide wide side of the precise matching absorption load through a coupling hole; a transmission waveguide is additionally arranged above the coupling hole, and energy is transmitted to a measured piece in the forward direction; and a precise matching absorption load is added in the reverse direction to absorb energy in the reverse direction, so that the measured piece matching improvement equipment in the attenuation measurement system is formed, and finally the measured piece matching of the attenuation measurement system is improved. According to the method and the equipment, the impedance matching of the measured piece is improved by using the precise matching load, the voltage standing-wave ratio of the load level is realized, and the attenuation measurement accuracy is improved. The tested piece matching improvement equipment developed by using the method is directly connected to two ends of the tested piece in an attenuation measurement system, so that the impedance matching of the tested piece is improved.

The invention discloses a wide-range current output intelligent load matching capacitive load experiment system, which comprises a three-phase current monitoring module, a multi-stage capacitor load module, a parameter input module and a calculation control module, and is characterized in that the three-phase current monitoring module, the multi-stage capacitor load module and the parameter input module are electrically connected with the calculation control module; the three-phase current monitoring module comprises an A-phase current display unit, a B-phase current display unit and a C-phase current display unit and is used for collecting and displaying real-time current of corresponding phase lines of a three-phase experimental product in real time, and the problems that an existing capacitive load experimental system is narrow in current output range, poor in adaptability, low in intelligent degree, insufficient in long-period operation stability and the like are solved. Current can be accurately output in a wide range, loads are intelligently matched, multiphase products are compatible, experiment safety and stability can be guaranteed, and efficiency is improved.

The invention discloses an intelligent control method and device for an electronic transformer and a storage medium, and relates to the technical field of transformer control, and the method comprises the steps: obtaining the power demand information of a plurality of loads at the downstream of the electronic transformer, and obtaining the power demand information of each load based on the power demand information and the electrical characteristics of each load; generating a deterministic load sequence for defining a switching or power change plan of each load in a future time period; the core innovation of the invention lies in breaking through the traditional closed-loop regulation thought, and realizing open-loop feed-forward following control by obtaining a load plan in advance and generating a deterministic control curve. The key of the conversion lies in the accuracy of the deterministic load sequence, and the load demand can be accurately matched only when the load action is a control curve which can be planned and predictable in advance and is generated in advance, so that the output stability can be ensured without real-time feedback adjustment.

The invention discloses a magnetic ring saturation characteristic measurement method and device, and the method comprises the steps: building a measurement circuit which comprises an arbitrary waveform generator, a power amplifier, a measured magnetic ring and a matched load based on the reference data of an impedance analyzer, and setting a voltage sensor, a current sensor and a thermocouple to obtain the voltage, current and temperature data of the measured magnetic ring; impedance and inductance data are obtained through calculation and serve as actual measurement data; comparing the measured data with the reference data, defining the ratio of the inductance data attenuation of the measured magnetic ring to the inductance data measured by the impedance analyzer as the saturation rate of the magnetic ring, and recording the signal type, frequency, amplitude and temperature rise corresponding to the magnetic ring at the moment; by fixing the signal type and the frequency and adjusting the signal amplitude, the saturation characteristic of the measured magnetic ring along with the amplitude change under the signal type and the current frequency is obtained; whether the magnetic ring is saturated or not and the saturation degree can be judged, and whether the magnetic ring is available or not is judged by measuring the temperature rise after the magnetic ring is saturated.

According to an example aspect of the present invention, there is provided an antenna array arranged to control a radar response of a target, comprising multiple ultra wideband antennas, wherein each of said multiple antennas is coupled to a separate switch, and each switch is arranged to control one of said multiple antennas such that when said one antenna is connected to a load, preferably matched load, said one antenna acts as an absorber, and when said one antenna is electrically shorted, said one antenna acts as a reflector, wherein at least one of said multiple antennas is arranged to be electrically shorted at a first time instant and the at least one of said multiple antennas is arranged to be connected to a load, preferably matched load, at a second time instant, and at least one other of said multiple antennas is arranged to be connected to a load, preferably matched load, at the first time instant and the at least one other of said multiple antennas is arranged to be electrically shorted at the second time instant.

The present disclosure relates to a calibration system for a vector network analyzer (VNA), having a plurality of N ports. The calibration system comprises a distribution unit having a plurality of D≤N ports; and a plurality of D≤N calibration units, respectively comprising a calibration circuit having first, second and third ports and an isolation circuit having first, second and third ports. For the respective calibration unit, the calibration circuit is configured to provide at least three different one-port calibration standards, such as open, short and match; the first port of the calibration circuit is arranged for being connected to a respective port of the VNA, the second port of the calibration circuit is connected to the first port of the isolation circuit, the third port of the calibration circuit is connected to a first matched load; the second port of the isolation circuit is connected to a respective port of the distribution unit, and the third port of the isolation circuit is connected to a second matched load. The distribution unit is configured to connect any one of its ports with all other of its ports.

The application discloses a kind of calibration chip sets for calibrating error factor of chip to be measured, the calibration chip set includes short-circuit calibration chip, open-circuit calibration chip, matching load calibration chip and straight-through calibration chip, any calibration chip in the calibration chip set is identical with the size of the chip to be measured, wherein the test pin of the short-circuit calibration chip is short-circuit connected with the ground metal layer itself;The test pin of the open-circuit calibration chip is open between the ground metal layer itself;The test pin of the matching load calibration chip is connected with the ground metal layer itself through load resistance;Two test pins of the straight-through calibration chip are electrically connected between the two test pins of the straight-through relationship on the straight-through calibration chip.The calibration chip used in the application directly sets the calibration reference surface of the vector network analyzer at the pin of the packaged chip, without additional consideration of the parasitic parameter introduced by the test fixture, improves the test accuracy of the chip, simplifies the calibration step and test data processing process.

The invention discloses a calibration method suitable for a mechanical linear scanning SAR (Synthetic Aperture Radar) imaging system, which belongs to an image processing technology, and comprises the following steps: enabling a transmission parameter measured by a vector network analyzer to be equivalent to a reflection measurement parameter of a single port, and establishing a mathematical model containing a directivity error, a reflection tracking error and a source matching error; matching load calibration and short-circuit load calibration are respectively carried out by using a free space and a large-size metal flat plate, and equivalent emission parameters of the vector network analyzer are obtained; performing time domain gate gating processing and error term solving according to the equivalent emission parameters; and substituting the solved directivity error, reflection tracking error and source matching error into the mathematical model, and carrying out error calibration. The method can adapt to dynamic working characteristics of mechanical scanning, is simple and convenient to operate, and can accurately peel off system errors.

The application discloses a transverse feedback excitation device with high shunt impedance and horizontal light extraction, and belongs to the technical field of particle accelerators. The device comprises a beam position probe (BPM), an RF front end, an ADC module, a digital signal processing module, a DAC module, a power divider, a power amplifier, a low-pass filter, an exciter (Kicker) and a matching load. The exciter Kicker has four electrode strips located on both sides of the beam center line and parallel to each other, two electrode strips on the same side are connected in parallel, the characteristic impedance of a single electrode strip is 100Ω, and the equivalent total characteristic impedance after parallel connection is 50Ω; the four electrode strips are distributed in a quadrangular symmetry in the cross section of the vacuum chamber and avoid the horizontal median plane, so as to form an open light path channel. The application improves the shunt impedance of the exciter, reduces the radio frequency power demand, realizes impedance matching with a standard 50Ω system, and guarantees the horizontal unobstructed extraction of the synchrotron radiation light.

The invention belongs to the technical field of thermoelectric power sensors, and particularly relates to a terahertz thermoelectric power sensing chip, a thermoelectric power sensor and application. The structural form of the chip is a heat insulation layer / absorption layer / isolation layer / thermopile / isolation layer / direct current resistor / heat insulation layer. The terahertz signal power absorbed by the absorption layer causes the temperature change of the absorption layer; the thermopile determines the incident power of the terahertz signal by determining the temperature variation of the absorption layer; generalized efficiency is used as the correction calibration amount of the power transmission standard by the direct-current resistor. The terahertz thermoelectric power sensing chip provided by the invention is applied to a thermoelectric power sensor, and the sensor adopts a high-precision and low-standing-wave ultra-wideband waveguide matching load to absorb high-frequency microwave signal power, so that the problem that the measurement frequency of a power meter is limited is solved; the measurement frequency range of the waveguide type thermoelectric power sensor is expanded to 1.1 THz, and the waveguide type thermoelectric power sensor can be used for measuring terahertz signals.

The invention discloses an online customer service user incoming line queuing distribution method and system. The method comprises the steps of user state capture, hybrid scheduling strategy, incentive mechanism design, scheduling model training and distribution abnormity coping. The invention belongs to the field of intelligent scheduling, and particularly relates to an online customer service user incoming line queuing distribution method and system.According to the scheme, on the basis of user queue jumping weight, customer service matching recommendation degree and service duration buffer adjustment value, fine adjustment is conducted outside a rule framework, and abrupt performance of hard queue jumping is avoided; based on a dynamic matching-load balancing mechanism, fine distribution with high skill matching degree and load balancing is realized; waiting time excitation is designed in a segmented manner, so that an aggressive strategy is prevented from being adopted for extremely shortening overtime waiting; a load balancing punishment is constructed through the load unbalance degree, and efficient utilization of resources is guaranteed; user loss caused by distribution failure is reduced based on stepped abnormal response; and the distribution effect is improved.

The invention discloses a synthetic aperture radiometer on-orbit antenna stability correction method, which comprises the following steps of: calibrating two parameters of receiver on-orbit gain and equivalent noise temperature through a single standard calibration source by utilizing a receiver on-orbit observation matching load and combining a receiver calibration parameter acquired by a laboratory; receiver calibration parameters are reversely transmitted to an antenna output end face, forward modeling is carried out to an antenna input end face in combination with an observation scene, an antenna loss calculation model is constructed by adopting apparent temperatures of the antenna input end face and the antenna output end face, loss parameters of an antenna are calibrated in an on-orbit mode, and the antenna loss is obtained by adopting three times of cold air calibration. According to the method, the characteristic model that the antenna loss changes along with the physical temperature is constructed, meanwhile, the antenna loss is corrected in real time at any physical temperature of the on-orbit antenna, correction of the stability of the on-orbit antenna is completed, and the stability of an on-orbit data product of the synthetic aperture radiometer is effectively improved.

The invention discloses a packaged data transmission optimization method and system based on an eMMC protocol CMD23 instruction, and relates to the field of embedded storage equipment. The method comprises the following steps of: 1, dynamically calculating an optimal packing block number, and packing and transmitting data according to the optimal packing block number; 2, independently controlling a forced programming bit FP / a reliable writing bit RW, writing key data into a flash memory, and detecting the integrity of transmission data; 3, setting a sequence guarantee buffer area for transmitting data, and regularly writing contents in the sequence guarantee buffer area into an RPMB partition of the eMMC equipment; and step 4, comparing the read transmitted data with the original to-be-transmitted data, and verifying the integrity of data transmission. According to the dynamic block counting algorithm, I / O loads can be matched in real time, on the premise that an eMMC protocol bottom layer is not modified, the bus bandwidth utilization rate is greatly improved, the problem of low efficiency of traditional static packaging is solved, and the data transmission reliability is improved through a double-flag-bit cooperation + SQB power failure protection mechanism.

The present invention discloses an absolute brightness temperature calibration method for a synthetic aperture radiometer system. The traditional two-point calibration method has problems such as large measurement error and poor sensitivity, so its scope of use is limited. In order to address these shortcomings, the present invention proposes a new noise injection method, which combines the measured antenna signal and the calibration signal through a coupler and outputs them as one input signal A of the receiving channel, and uses a matching load signal with a precisely known brightness temperature as another input signal B of the receiving channel. The decision module and the control signal generation module in the acquisition processor control the switching of the front-end switch, so that the brightness temperature values ​​of the two input signals of the receiving channel reach a dynamic balance, thereby accurately measuring the absolute brightness temperature of the measured antenna signal. The present invention has the characteristics of small measurement error and high measurement sensitivity, and can be used in various synthetic aperture radiometer systems to accurately measure the absolute brightness temperature of the antenna input.

The invention discloses an ultra-short matched load, which adopts a profile metal tube and two or more absorbers, the shape of the absorbers is one or as few as possible, preferably, the absorbers are rectangular, and a plurality of abruptly changed reflecting surfaces are formed along the axis of a waveguide tube by changing the placement positions and orientations of different absorbers. Compact, broadband and low-cost ultra-compact matched loads are obtained by utilizing mutual superposition and counteracting of reflection of electromagnetic waves on the surfaces. The invention can be used for various electromagnetic wave processing systems, such as industrial electromagnetic wave furnaces and electromagnetic wave tunnel furnaces, and is used for puffing, sterilizing, deep drying, sintering and the like of materials.

The invention discloses a miniaturized high-gain millimeter wave waveguide slot array antenna, which comprises a one-to-two waveguide power divider and a metal waveguide tube, and is characterized in that the one-to-two waveguide power divider is mounted at the head of the metal waveguide tube in a butt joint manner and is used for feeding two ports of the metal waveguide tube with equal amplitude and same phase; the metal waveguide tube is a standard Ka wave band waveguide tube, a wave absorbing material is embedded in the tail portion of the metal waveguide tube, the tail portion of the metal waveguide tube is blocked through a metal sealing plate, and the metal sealing plate is used for carrying out short circuit on the upper bottom face and the lower bottom face of the tail portion of the metal waveguide tube and forms a matched load together with the wave absorbing material to adjust antenna impedance matching. Two columns of round-head strip-shaped gaps are symmetrically etched in the metal waveguide tube in the longitudinal direction, each column of round-head strip-shaped gaps comprises 20 round-head strip-shaped gaps which are etched at equal intervals, and the offset of the 20 round-head strip-shaped gaps in the same column relative to the waveguide center axis is calculated according to Taylor distribution.

The application provides an array antenna mutual coupling calibration method and system based on spatial multi-scale feature decoupling, relates to the technical field of antenna testing, and comprises the following steps: placing a target antenna array in a full-wave anechoic chamber, connecting two ports to a vector network analyzer, and terminating the remaining ports with a matching load; measuring and obtaining the transmission coefficient between the two ports in a preset working frequency band to represent the coupling strength between the ports; repeatedly performing the measurement operation on multiple port pairs to obtain a scattering parameter matrix representing the mutual coupling effect; and comparing the scattering parameter with a preset technical index to determine whether the antenna isolation meets the requirements. The application can comprehensively and accurately represent the mutual coupling effect of a multi-channel antenna, avoid errors caused by reflection interference in the testing process, realize rapid determination and quality control of the isolation performance, and provide a reliable basis for the design optimization and engineering application of a base station antenna.

The invention relates to the technical field of wireless testing, in particular to an antenna radiation sensitivity testing method and device, terminal equipment and a storage medium. The method comprises the steps that a radio frequency interface of a tested device is connected with a first output port of a radio frequency power divider, an input port of the radio frequency power divider is connected with a radio frequency port of a wireless comprehensive tester, and a second output port of the radio frequency power divider is externally connected with a matched load; traversing all target wireless channels, and measuring and recording the conduction sensitivity of the tested equipment under each channel as the reference sensitivity; the second output port is changed to be connected with a matched antenna, a low-noise amplifier is connected between the matched antenna and the radio frequency power divider in series, and the gain of the low-noise amplifier is equal to the insertion loss of the radio frequency power divider; traversing all target wireless channels, and measuring and recording the equivalent radiation sensitivity of the tested equipment under each channel; and calculating the difference between the reference sensitivity and the equivalent radiation sensitivity under the same channel to obtain the radiation sensitivity deterioration degree of the tested equipment.

The invention provides a radio frequency front-end circuit, a communication module, communication equipment, a control method and a storage medium, and relates to the technical field of communication. Through time slot level switching control of the first switching circuit, a port of a transmitting filter of the duplexer is connected to a matched load in a receiving time slot of an HD-FDD mode, and the duplexer is ensured to be always in a good three-port matching state in a non-transmitting time period, so that FDD and HD-FDD dual-mode work is simultaneously supported on the basis of multiplexing a single duplexer, and the dual-mode working efficiency of the duplexer is improved. An independent hardware path does not need to be additionally configured for the HD-FDD mode, the radio frequency front-end architecture is effectively simplified, and the cost and the size are reduced.

The present application relates to the technical field of particle accelerator, and especially relates to a transverse feedback system with switchable excitation direction and a control method thereof, which comprises: a beam position probe (BPM) for measuring a beam signal; an RF front end for receiving the beam signal sent by the beam position probe (BPM) and performing amplification and filtering processing; an ADC module for converting the beam signal into a digital signal; a digital signal processing module for performing digital signal processing calculation to obtain an excitation signal; a DAC module for performing digital-to-analog conversion; a power divider for adjusting the phase of the excitation signal; and a kicker including four charged electrodes, a power amplifier, a low-pass filter and a matching load for applying a transverse excitation signal to the beam. The present application solves the problems of the prior art, such as large occupation of longitudinal space by the transverse feedback system (Kicker), complex system, low precision and low efficiency.

The application relates to a particle accelerator beam diagnosis technology, and aims to solve the problem that an existing calibration device cannot calibrate the response of a beam position detector to non-relativistic beams, and provides a calibration device for a beam position detector based on a helix, which comprises a mounting table, a two-dimensional translation table, an electric rotating table, a first through pipe, a second through pipe, a helix assembly and a fixing support; a to-be-measured beam position detector is coaxially connected between the first through pipe and the second through pipe; the helix assembly is coaxially arranged in an internal space formed by the first through pipe, the to-be-measured beam position detector and the second through pipe; the helix assembly comprises a metal cylindrical inner core and an insulating sleeve, a helix is wound on the insulating sleeve, flange type SMA connectors are arranged at two ends of the metal cylindrical inner core, and the inner cores of the two flange type SMA connectors are electrically connected with the helix; one end of the flange type SMA connector is connected with an external signal generator, and the other end of the flange type SMA connector is connected with a matching load.

The application relates to the technical field of container orchestration, and discloses an algorithm container quantity adjustment method and device, an electronic device and a storage medium, which comprise the following steps: acquiring an actual measured load of a current monitoring period and a predicted load of the current monitoring period predicted in a previous monitoring period; updating the prediction confidence of the previous monitoring period according to the actual measured load of the current monitoring period, to obtain the prediction confidence of the current monitoring period; performing weighted summation on the actual measured load of the current monitoring period and the predicted load of the current monitoring period based on the prediction confidence of the current monitoring period, to obtain a comprehensive load of the current monitoring period; determining an adjustment coefficient according to the difference between the comprehensive load and a preset standard load; and obtaining the adjusted number of algorithm Pods according to the total number of current algorithm Pods and the adjustment coefficient. The application solves the problem of low resource utilization caused by a static resource configuration mode, realizes accurate matching of load demand, and optimizes resource utilization.

The utility model discloses a double-section double-frequency-band isolator, which comprises a cavity, two cylindrical cavity grooves with the same size and the same depth are arranged on the cavity, and open slots communicated with each other are arranged on adjacent sides of the two cavity grooves; a permanent magnet I, a uniform magnetic iron sheet, a gyromagnetic ferrite I, a central circuit, a gyromagnetic ferrite II, a uniform magnetic iron sheet with an ear, a permanent magnet II, a nickel sheet and a cover plate are correspondingly arranged in each cavity groove from bottom to top in sequence, wherein the gyromagnetic ferrite I and the gyromagnetic ferrite II are fixed in the cavity groove through polytetrafluoroethylene rings; four ports are formed in three side edges of the cavity, each port is communicated with the cavity groove, one port is provided with a matched load, and the matched load is electrically connected with the central circuit; the utility model has the advantages of simple structure, low loss, good heat dissipation performance, high normal temperature and high and low temperature reliability, easy assembly and the like.

Embodiments of the present application relate to the technical field of computer, and disclose a team matching method and device based on game, medium and product. The method comprises: determining a team score of a matching team according to a teaming request of a player; the matching team is used to represent a basic battle unit generated based on the teaming request; dynamically calculating a segment width according to a current number of online players; determining a dynamic segment set according to the team score and the segment width; wherein the segment set is an elastic matching interval set based on dynamic adjustment of a segment boundary and the segment width according to real-time matching load; and determining a multi-team matching result according to the dynamic segment set. At least the technical problem of rigid rules in related technologies can be solved.

The application discloses a kind of composite broadband microvibration energy acquisition adaptive power management and power supply circuit system, comprising: transducer signal separation acquisition module, makes piezoelectric and electromagnetic two-way signal from source physical isolation;First, second impedance matching rectifier module, extract band energy characteristics from respective rectification output ripple, dynamically adjust equivalent input impedance in feedforward mode;Power fusion module, by controlled MOSFET realizes the one-way low-loss merging of two-way direct current power;Hybrid energy storage and charging path scheduling module, according to bus power level automatically switches between sequencing charging state;Transient power distribution and load state detection module, to pure hardware timing distinguishes network matching load current transient characteristics, realizes power supply trigger and shutdown.The application makes impedance matching response and vibration spectrum change synchronous, avoids double-source cross interference and energy storage boundary oscillation, is independent of digital protocol, realizes the autonomous perception and precision power distribution of load task.

This application belongs to the field of electromagnetic protection technology and relates to a wave-absorbing energy selective protection device, comprising: a dielectric substrate, a microstrip line disposed on the top of the dielectric substrate, and a ground plane disposed at the bottom of the dielectric substrate; the microstrip line includes: a first microstrip stub and a second microstrip stub; the two ends of the first microstrip stub are respectively connected to an input port and an output port, the middle part of the first microstrip stub is connected to a branch section through a diode, and the branch section is connected to the ground plane; one end of the second microstrip stub is connected to the middle part of the first microstrip stub through a diode, and the other end of the second microstrip stub is connected to a matched load port; the microstrip line further includes: a terminating short-circuit stub; one end of the terminating short-circuit stub is connected to the ground plane, and the other end is connected to the other end of the second microstrip stub. Using this application, strong electromagnetic protection can be achieved by absorbing waves, reducing the radar cross-section.

The present invention is a microwave artificial diamond production device, which comprises a reaction container and a microwave emission module. A diamond seed is placed in the reaction container. The microwave emission module comprises a mode conversion tube, a guide tube, a first waveguide tube and a first linear polarization microwave source, and a second waveguide tube and a first matching load connected in sequence. The mode conversion tube is connected to the reaction container and can convert microwave between circular polarization mode and linear polarization mode. The guide tube has a first opening and a second opening which are not parallel and are connected to the first waveguide tube and the second waveguide tube respectively. The first linear polarization microwave source is arranged in the first waveguide tube, and the first matching load is arranged in the second waveguide tube. In this way, the reflected microwave in the reaction container which is not used can be absorbed by the first matching load, thereby improving the diamond production efficiency.

The utility model discloses a material defect detection device based on an ultrasonic transmission reflection method. The material defect detection device comprises an AD sampler (1), a pulse signal source (2), a directional coupler (3), a first ultrasonic probe (4), a test sample (5), a pulse amplifier (6) and a matched load (7), the directional coupler (3) is provided with a first port (8), a second port (9) and a third port (10), the first port (8) is communicated with the third port (10), and the second port (9) only receives part of echo signals of the third port (10), so that the AD sampler (1) is connected with the second port (9), and detection signals from the first ultrasonic probe (4) can be acquired in real time; the AD sampling device (1), the pulse signal source (2) and the directional coupler (3) are integrated in the packaging shell (11), signal connection in the packaging shell (11) is fixed, only the first external port (12) and the second external port (13) are arranged, and two tests of an ultrasonic transmission method and a reflection method can be achieved.