47results about How to "Guaranteed normal sampling" patented technology

The invention discloses an underground layered gas-liquid two phase fluid pressure and temperature-retaining sampling device, which is arranged on the inner wall of a drilled hole or a sleeve and consists of a packer system, a liquid sample inlet system, a gas sample inlet system, an automatic multi-way valve, a sampling system, a temperature control system, and an external pressure / flow control system, wherein a thermal-insulation layer or temperature control system covers the outside of the entire sampling device. The device accurately controls the layer under ground fluid sampling positionto realize gas and liquid fluid sampling at different layer positions of a stratum, ensures the temperature and pressure in a sampling process are consistent with those of the underground fluid, and improves the pressure and temperature-retaining degree of the fluid in the sampling process. The principle of the device is simple, the parts are assembled simply and the device is suitable for multilayer sampling in a drilled well and underground gas-liquid two-phase fluid sampling.

The invention discloses a system for confirming a memory controller clock calibration value. The system consists of an appointing device, a read-write device, a comparing device and a confirming device which are coordinated with each other. A first clock calibrating device is appointed with a first calibration value, and the first clock calibrating device is used for reading preset detection data which is written in a memory according to a calibrated clock signal output by the appointed first calibration value. Whether the clock signal calibrated according to the appointed first calibration value can ensure correct data sampling is judged by comparing whether the read detection data is consistent with the preset detection data. The process is repeated continuously, a first calibration value range which ensures the correct data sampling can be obtained, and any first calibration value can be taken from the range to be used as a finial calibration value of the first clock calibrating device. The invention also discloses a method for confirming the memory controller clock calibration value. The invention can confirm the clock calibration value ensuring the accurate data sampling independently and confirms fast.

The invention discloses a sampling device for a continuous online detection system of flue gas emission, which is characterized in that the sampling device is composed of a sampling ash removing mechanism, a controller and a sampling pump. The sampling ash removing mechanism is used to collect sample gas and eliminate powder dust in the gas, and is composed of a main body structure, a back-blowing controller, a back-blowing gas pipe, a sweeping controller, a flue gas sample outlet, a dust removing filter element and a sweeping actuator. The controller is composed of a frequency converter, a computer, a flue gas flow speed sampling interface, a control output interface, a frequency converter output interface and a power supply wire interface, and the computer controls the sampling ash removing mechanism to sample and remove ash and simultaneously controls the sampling speed of the sampling pump in order to realize the sampling synchronization. The sampling pump is composed of a control wire interface, a fan, a flue gas sample detecting inlet and a surplus sample gas outlet. The invention solves the problems of sampling blockage, synchronous sampling and negative pressure sampling, detects and samples the gas in the process of controlling production, and is also applied to detection and sampling for the environmental protection of various gas.

The invention consists of main circuit of active power filter, and mixed type harmonic-testing circuit. The mixed type harmonic-testing circuit integrates advantages of analog and digital control that can either avoid error of digital sampling to signal containing high frequency component, or simplify DSP to extract the fundamental component of load circuit, so that the time delay introduced by digital control is limited in fundamental frequency. At the above bases, through algorithm for fundamental wave based synchronous rotating coordinates, the phase compensation strategy is introduced, which solves the problem of time delay caused by digital control.

The invention discloses a flow-adjustable impact type compressed air microorganism sampler with sieve meshes, and is applied to the technical field of microorganism acquisition and quantity monitoring. The flow-adjustable impact type compressed air microorganism sampler comprises a shell, a sampling head and a controllable decompression gas circuit system. The sampling head is arranged on the top of the shell, the controllable decompression gas circuit system is arranged in the shell, an air inlet channel is arranged on the sampling head, a culture dish seat which directly faces the air inlet channel is arranged on the shell and is positioned below the sampling head, an air outlet channel is arranged on the culture dish seat, the controllable decompression gas circuit system comprises a gas circuit, a gas pressure regulating valve and a gas flow meter, the gas pressure regulating valve and the gas flow meter are arranged on the gas circuit, one end of the gas circuit on the shell is connected to a gas source connector, and the other end of the gas circuit is butted to the air inlet channel of the sampling head by a gas dispersing head. Compared with other treatment methods, the flow-adjustable impact type compressed air microorganism sampler has the advantages that the flow-adjustable impact type compressed air microorganism sampler is high in sampling speed and particle capture rate; the actual contents of bacteria in compressed air can be accurately expressed, and accordingly a perfect sampling method is proposed.

The invention discloses a novel coal sample collecting device which comprises an outer protection drill stem, an inner sampling drill stem and a wind path steering mechanism. The outer protection drill stem, the inner sampling drill stem and the wind path steering mechanism are connected through a drill stem connection mechanism. The coal sample collecting device has a simple structure and is convenient to operate, and has feeding and sampling work states in use; airstream passes through both an outer protection drill pipe and a sampling drill pipe in the feeding process, so that cooling of a blade and cleaning of the sampling drill pipe can be guaranteed; the sampling drill pipe firstly contacts the coal wall when being fed to a sampling point; the sampling drill pipe moves backwards to move compressed airstream to reverse a pressure spring under the action of feeding force; the wind path steering mechanism acts, and the airstream path changes and comes into the sampling work state. In the sampling process, the airstream passes through the outer protection drill pipe, and no airstream passes through the sampling drill pipe so as to guarantee cooling of the blade and normally sampling of the sampling drill pipe. Smooth implementation of the coal sample collecting work can be guaranteed, the coal sample collecting efficiency is high, and the coal sample accords with the measuring standards.

The invention discloses a sample adding device applied to a liquid biological reaction system and a control method, an X-axis moving component of the sample adding device is installed above a whole rack, a Z-axis moving component is arranged on the X-axis moving component, a sample adding component is arranged on the X-axis moving component, a Y-axis moving component is arranged on the whole rack, a tray component is installed on the Y-axis moving component, an inlet of a liquid circuit drive device is connected with a liquid storage device, a bubble sensor is installed on a pipeline, an outlet of the liquid circuit drive device is connected with an inlet of the sample adding component, and the X-axis moving component, the Z-axis moving component, the Y-axis moving component, the liquid circuit drive device and the bubble sensor are all connected with a PLC. The sample adding speed is greatly accelerated, the pollution is reduced in the process of adding a sample, and meanwhile, the sample can be added to eight biological reaction systems at the same time while the sample is added to the liquid biological reaction system.

The invention relates to a sediment pore water in situ high resolution sampler, and belongs to the technical fields of water sampling in hydrology and water resource science and environmental science.The sampler comprises a perforated plate, a groove plate and dialysis film, a plurality of elongated grooves are formed in one surface of the groove plate, the grooves are formed in the width direction of the groove plate, a plurality of rows of through holes are formed in the perforated plate, a plurality of through holes are formed in each row, the through holes are all formed in the width direction of the perforated plate, one side of the dialysis film closely fits the surface, where the grooves are formed, of the groove plate, the perforated plate closely fits the other side of the dialysis film, the groove plate is detachably fixedly connected with the perforated plate, and a groove corresponds to the position of a row of through holes; the sampler can achieve the collection of porewater of sediments of different depths under the condition that the original state of the sediments is maintained as much as possible, anaerobic situation is ensured and high resolution is guaranteed,and the assembly is simple.

The present invention relates to a window sampling control method and a device, wherein the method comprises the following steps: confirming the DDR window sampling point of double data rate synchronous dynamic random access memory after the single board is electrified; obtaining the temperature sensitivity level of the DDR window sampling point; comparing with the temperature recorded before the single board is electrified according to the temperature sensitivity level for matching with the DDR window sampling point satisfying the temperature difference condition; and inputting the data of the DDR window sampling point satisfying the temperature difference condition into a DDR controller. Therefore the window can be adjusted dynamically when the temperature changes so that the single board is in an optimum state when the service is recovered.

The invention provides a detection device, and a detection method for hydrogen sulfide in an oil product. By the detection device and the detection method, the oil product can be sampled under the condition of isolating the air, so that the hydrogen sulfide can be prevented from escaping from the oil product to the air; furthermore, the hydrogen sulfide can be prevented from being oxidized by oxygen in the air; therefore, a small amount of hydrogen sulfide can be detected; and the detecting range of petroleum products is expanded.

The invention provides a dairy product pasteurization sterilization system and a sterilization storage tank thereof, relates to the technical field of storage tanks. The dairy product pasteurization sterilization system and the sterilization storage tank thereof aims to solve the problems that when an existing dairy product pasteurization sterilization storage tank is used, due to the fact that the height of a sampling opening located in slurry is not easy to adjust, stratified sampling is difficult, meanwhile the slurry is influenced by stirring, flowing at the sampling position is not stable enough, the accuracy of stratified sampling results is poor, material slag is prone to being deposited at the bottom of a cavity of the storage tank, and the cleaning process is troublesome are solved. The sterilization storage tank comprises a storage tank body, wherein a first motor is arranged at the top of the storage tank body, a shaft rod at the bottom of the first motor penetrates through the top wall of the storage tank body, and stirring blades are arranged on the shaft rod and located in a cavity of the storage tank body. Since the sampling opening is located between two guide plates, the two guide plates buffer stirred slurry under the elastic action of restoring springs, stable flow of the slurry in a sampling frame is ensured, and the accuracy of stratified sampling results is improved.

The invention provides a tow bucket type sand-riverbed sand sampling system which comprises a sampling cylinder. A division board is axially arranged in the sampling cylinder, and the sampling cylinder is divided into two parts through the division board; one end of the sampling cylinder is enclosed; the other end of the sampling cylinder is provided with a sampling end, and the end face is of a slope; a stop board is arranged at the sampling end, and the lower edge of the stop board is connected with the division board and has the upper part of the sampling end enclosed; the lower part of a sampling section is provided with a sampling opening, and a water outlet is arranged in the position close to the stop block and above the sampling cylinder; an interconnecting hole is arranged in the enclosed end of the sampling cylinder so as to enable upper and lower parts of the sampling cylinder to be communicated; an inhaul fixing unit is arranged in the outside of the sampling cylinder; the inhaul fixing unit bypasses a roller of a river-bottom signal instrument via a first inhaul to be fixed with a boat through a second inhaul; the roller of the river-bottom signal instrument is connected with a sensor, and the sensor is connected with a counter weight through a third inhaul.

The invention discloses an adjusting method of the range of a pipette. The adjusting method comprises the following steps: setting a preset range value; acquiring an image of the current range value of the pipette; recognizing the range value in the image; and rotating a range rotary disc according to the current range value and the preset range value. The range of the pipette is adjusted to the preset range value by acquiring the image of a scale observation window of the pipette, recognizing the range value of the current pipette and then rotating the range rotary disc by a specified angle,so that convenience is brought for following direct operation and use. The application also provides an adjusting device of the range of the pipette applicable to the above adjusting method of the range of the pipette.

The invention relates to a bracket for air sampling at a fan inlet, belongs to the technical field of air quality inspection sample collection, and solves the problem of air sampling of a main airflowof the fan inlet. A cross connector is a cross-shaped frame, the four ends of the cross connector are respectively inserted into four sampling bracket bodies, the four sampling bracket bodies are hollow main body structures, and the cross connector is connected with the sampling bracket bodies as an integrated piece; the sampling bracket main bodies are located at the front air inlet of a fan airinlet duct; a sampling bracket fixing clamp is located at the outer edge of the fan air inlet duct, one end of the sampling bracket fixing clamp is welded with the sampling bracket main bodies, and the other end of the sampling bracket fixing clamp connects four sampling brackets in series with a fan fixing steel strip by bolts to embrace and tightly fasten to the outside of the fan air inlet duct; a plurality of sampling heads are evenly mounted on the sampling bracket main bodies; and sampling head connecting hoses are connected with the lower ends of the sampling heads. The bracket is applicable to the collection of air samples at air intake ports at different locations.

The invention provides a novel anti-clogging sand riverbed sand sampling system, which comprises a sampling cylinder, wherein a dividing plate is arranged in the sampling cylinder along an axial direction, and divides the sampling cylinder into an upper part and a lower part; one end of the sampling cylinder is sealed; the other end of the sampling cylinder is a sampling end, and the end face is an inclined plane; sampling ports are respectively formed in the upper surface part and the lower surface part of a sampling section, and no baffle plate is arranged at the upper half part; a water outlet is formed in a position, close to a baffle plate, above the sampling cylinder; a first communication hole is formed in the sealed end of the sampling cylinder, so that the upper part and the lower part of the sampling cylinder are communicated; an inhaul fixing device is arranged at the outer side of the sampling cylinder, and bypasses a rolling wheel of a river bottom signal instrument through a first inhaul so as to be fixed with a ship through a second inhaul; the rolling wheel of the river bottom signal instrument is connected with a sensor; the sensor is connected with a heavy punch through a third inhaul; a second communication hole is formed in the dividing plate along an axial direction; the first communication hole and the second communication hole are respectively provided with a filter washer.

The invention discloses an oilfield oil extraction sampling device and an operation method, and particularly relates to the field of oilfield sampling. The device comprises a sampling circular sleeve,wherein the top of the sampling circular sleeve is movably provided with a piston rod in a sleeving mode, the top of the piston rod is fixedly provided with a magnet, the top of the magnet is magnetically connected with an electromagnet, the top of the electromagnet is fixedly connected with a pneumatic rod, the top of the pneumatic rod is electrically connected with an air pump, the outer portion of the piston rod is movably sleeved with a positioning cover, and the bottom of the positioning cover is sleeved with a sampling inner barrel sleeve in a threaded mode. According to the device andthe method, in the actual operation process, the electromagnet and the air pump are started by a controller, the electromagnet is enabled to generate magnetic force to attract the magnet, at the moment, the air pump lifts the piston rod to ascend, the space in the bottom of a piston is increased, internal air pressure of the sampling inner barrel sleeve is increased, crude oil inside a scraping blade at the bottom of the sampling circular sleeve is extracted, the magnetic force generated by the electromagnet is more stable, and the controllability is strong.

The invention discloses a pipeline liquid sealed sampling method. The method includes the steps of: assembly of sampling equipment: preparing a sampling needle, setting a vertical through first mounting hole at the top of the sampling needle, setting a second mounting hole coaxially with the first mounting hole at the bottom of the sampling needle, arranging a first needle for liquid sampling in the first mounting hole, and mounting a second needle in the second mounting hole; and sampling: inserting the first needle into a sealed pad of a sealed sampling bottle, conducting further insertion, then inserting the second needle also into the sealed pad of the sealed sampling bottle, during collection, adsorbing the liquid passing through the first needle into the sampling bottle, and discharging the gas passing through the second needle into an activated carbon adsorber by the sampling needle. The method provided by the invention can guarantee normal sampling, prevent blockage of the sampling needle, and reduce the needle replacement cost, and also lowers the consumption of the sealed pad.

The invention discloses a gas ultrasonic flowmeter. A meter body of the gas ultrasonic flowmeter comprises a box body, a front end flange cover with a gas inlet and a rear end flange cover with a gas outlet, one side of the front end flange cover is connected to one end face of the box body, and a gas inlet flow dividing assembly is further arranged in the position, located on the side, of the box body. One side of the rear end flange cover is connected to the other end face of the box body and provided with a gas leading-out component, a partition plate dividing the box body into a gas inlet cavity and a gas outlet cavity is arranged in the box body and located between the gas inlet flow dividing assembly and the gas leading-out component, a hollow measuring pipe section is installed on the partition plate, and the gas inlet end of the measuring pipe section is located in the gas inlet cavity. The gas outlet end of the measuring pipe section is located in the gas outlet cavity, and an ultrasonic transducer pair is installed on the measuring pipe section and used for detecting the flow of gas. A front straight pipe section, a rear straight pipe section and a front flow stabilizer in the prior art are removed, the size of the meter body is effectively reduced, the structure is more compact, installation is more convenient, and the installation requirement of the gas ultrasonic flowmeter in the available space limited area can be met.

The invention mainly aims to provide a protective mask which can all around protect medical personnel and can prevent spray splashing of patients for swab sampling. The protective mask is characterized by comprising a mask body and fixing binding ropes, wherein two sides of the mask body are respectively provided with fixing columns; the fixing binding ropes are respectively fixed in the fixing columns; the upper side of the mask body is provided with an air exchange hole and a sampling hole; a filter gasket is fixedly arranged on the upper side of the air exchange hole; a sealing plug is fixedly arranged on the upper side of the sampling hole; the middle position of the sealing plug is provided with an inlet hole; and the mask body is of a transparent structure. The protective mask is used in a swab sampling process. According to the invention, the face mask is provided with a sealing hole, a handle of a swab passes through the sealing hole, and a doctor can see the location of the swab in the oropharynx and nasopharynx through the mask. Therefore, normal swab sampling can be ensured, the spray can be prevented from splashing into the air and on the doctor, and the infection possibility of the doctor is greatly reduced.

The invention provides a bearing unsteady-state fault feature non-rotating-speed extraction method, which comprises the following steps of collecting an original signal of a bearing, and extracting time domain impact information of the original signal to obtain an effective impact signal; optimizing the effective impact signal through an iterative algorithm to obtain a target impact signal subjected to error extraction removal and missing extraction supplement; and constructing an equal-angle resampling time sequence according to the target impact signal to obtain a new resampling signal s(i),and performing corresponding spectrum or envelope analysis on the new resampling signal s(i) to obtain fault feature frequency and fault information of the bearing. According to the bearing unsteady-state fault feature non-rotation-speed extraction method provided by the invention, the proposed impact information is optimized through an impact optimization strategy, and the impact of mistaken extraction for increasing extraction leakage is removed; and the phase information of the waveform is calculated and resampled according to the impact position, and the envelope spectrum is analyzed to obtain the fault feature frequency of the bearing, namely the corresponding fault information.

The invention discloses a geological content drilling and sampling device for geological surveying and mining, and belongs to the field of geological sampling. The drilling depth control unit comprises a lifting plate, connecting rods, a lifting rod, a sliding column, a top ring, a bottom ring and a control power assembly, a round hole is formed in the middle of the lifting plate, the connecting rods are arranged at the two ends of the front side and the rear side of the lifting plate correspondingly, and the ends of the two connecting rods on the same side of the lifting plate are connected through the lifting rod; sliding holes in the two ends of the lifting rod are vertically and slidably connected with sliding columns correspondingly, the tops of the four sliding columns are fixedly connected with a top ring, and the bottoms of the four sliding columns are fixedly connected with a bottom ring. The drilling efficiency is high, even a hard soil layer is easy to drill, the device is stable and not easy to jack up during drilling, soil generated during drilling can be discharged to the position far away from a drill hole, the soil is prevented from entering the drill hole again, it is ensured that sampling is not affected, and meanwhile continuous drilling is prevented from being affected.

According to the aerosol sorting and generating device, a collision screener is arranged to be of a shell inner cavity structure which is simple in structure, a collision plate is installed in an inner cavity, a collision groove is formed in the collision plate, by arranging the collision groove, aerosol passing through an airflow inlet collides into the collision groove, and large particles collide and remain in the collision groove; and small particles enter an airflow outlet along airflow holes in the periphery of the impact groove along with airflow and are discharged. Through the arrangement of the structure of the impact groove, the accumulation of large particles on the impact plate can be avoided, the accumulation space is increased, and the influence on the final detection result due to the discharge of too much accumulated large particles along with airflow is avoided.

The invention discloses a wide input voltage rectifying and voltage stabilizing circuit. An AC / DC bridge rectifier circuit is adopted to convert the input AC voltage into pulsating DC voltage, and a rectifying and voltage stabilizing value sampling driving circuit controls the switching on and off of an MOS (Metal Oxide Semiconductor) transistor voltage stabilizing driving circuit, thereby ensuring that when the input AC voltage is too high, the output voltage VDC2 is constant. For example, when the input AC voltage is greater than the voltage stabilizing set value, the rectifying and voltagestabilizing value sampling driving circuit switches off the MOS transistor voltage stabilizing driving circuit to stop charging a filter voltage stabilizing circuit; and when the input AC voltage is less than the voltage stabilizing set value, the rectifying and voltage stabilizing value sampling driving circuit controls the MOS transistor voltage stabilizing driving circuit to be switched on to charge the filter voltage stabilizing circuit, thereby keeping the adjusted voltage at the set constant value and meeting occasions with a wider input voltage range. The circuit disclosed by the invention has the advantages of simple circuit connection, high anti-interference capability, wide voltage input range, good sampling circuit stability, adjustable voltage output range and the like.

The invention discloses a motor controller (120) applied to an electric vehicle (1000), a microprocessor (10) in the motor controller (120) and a sampling triggering method applied to the microprocessor (10). The microprocessor (10) is connected with the driving motor (130) through the rotary transformer (160) and used for sampling a rotary transformer feedback signal, output by the rotary transformer (160), of the electric angle of the driving motor. The sampling triggering method comprises the steps that the signal generation module (11) generates an excitation fundamental wave signal to drive the rotary transformer (160) to work; the signal processing module (12) determines an excitation symbol according to the excitation fundamental wave signal, wherein the excitation symbol is formed by alternating a high-level signal and a low-level signal; the signal processing module (12) also determines a zero crossing point signal of the excitation fundamental wave signal according to the excitation symbol; and the phase shift processing module (13) performs phase shift processing on the zero crossing point signal to obtain a sampling trigger signal so as to trigger the microprocessor (10) to sample the rotary transformer feedback signal. According to the scheme, the use of peripheral circuits of the chip is reduced, the area of the printed circuit board is further saved, and the integration level of the product is improved.

The present invention provides an automatic sampler for rabbit milk, which includes an auxiliary device, a securing device, a sampling container and a control system. The seat is provided with two clamping claws through the clamping mechanism. The securing device includes a fixed frame and a securing roller. A securing airbag is fixed on the inner wall of the securing roller. A sampling opening is arranged on the side wall of the securing roller and the securing airbag. The container includes a sample cup, an upper end cover and a lower end cover, a rabbit milk nozzle is installed on the upper end cover, a suction pipe is fixed on the bottom of the lower end cover, and a sealing seat is slidingly installed inside the lower end cover, the invention can realize automatic sampling of rabbit milk It solves the problem of low efficiency and energy-consuming rabbit milk sampling, greatly shortens the time of rabbit milk sampling, and reduces the work intensity of the staff. It has the characteristics of simple operation, high sampling efficiency and high safety in use.

The invention discloses an adjusting method of the range of a pipette. The adjusting method comprises the following steps: setting a preset range value; acquiring an image of the current range value of the pipette; recognizing the range value in the image; and rotating a range rotary disc according to the current range value and the preset range value. The range of the pipette is adjusted to the preset range value by acquiring the image of a scale observation window of the pipette, recognizing the range value of the current pipette and then rotating the range rotary disc by a specified angle,so that convenience is brought for following direct operation and use. The application also provides an adjusting device of the range of the pipette applicable to the above adjusting method of the range of the pipette.

The invention provides a synthetic aperture radar wide-range imaging realization method and device. The method comprises the following steps of adjusting pointing directions of a plurality of pitching beams based on inter-pulse switching, receiving echo signals pointed by different pitching beams, and acquiring radar echo signals in different distance intervals, performing imaging processing on the radar echo signals in the different distance intervals to obtain images in the different distance intervals, and carrying out splicing processing on the image data in different distance intervals to obtain a large-breadth radar image. While the wide image can be obtained, the imaging resolution is ensured, and the problem that the resolution is reduced during wide imaging of the earth synthetic aperture radar is solved.

The invention provides an FPGA-based multipath signal selection method and system, an electronic device and a storage medium, and the method comprises the steps: presetting a truth table in an FPGA internal register, and determining a data address corresponding to each business board; receiving a control instruction, and configuring storage information of the control instruction in an internal register of the FPGA; according to a mapping relation between a data address of the control instruction and an address element item of a truth table, sending data information of the control instruction to a corresponding service board; after receiving the corresponding data information, the service board sends or does not send a response signal in at least two clock periods; and accessing each service board in sequence, and establishing communication connection with the service board when the response signal is acquired. The system is mainly provided with a main control board and an external service board, the main control board mainly comprises an FPGA (Field Programmable Gate Array) and a clock chip, the FPGA can realize external interaction of signals, the clock chip provides a clock for the FPGA to ensure normal sampling of the chip, and the service board can realize different functions according to actual requirements.

The invention discloses a high-precision positioning puncture mechanism for CT puncture guiding. The high-precision positioning puncture mechanism comprises a connecting cavity, a third rotating shaft, a fourth rotating shaft, a worm, a worm gear, a rack, a rotating part, a bilateral rack, a clamping plate, a first rotating rod and a second rotating rod. The device can replace manual work to accurately position a marked part in actual use, so that a puncture needle can directly face the marked part through self-adjustment, positioning is more accurate, the puncture depth can be better controlled, sampling safety and accuracy are guaranteed, the labor intensity of medical staff is reduced, and high practicability is achieved; the upper part of the puncture needle can be sealed while the puncture needle is fixed through the linkage mechanism, so that the puncture needle is in a sealed state in an actual puncture process, sterile sampling is ensured, subsequent cleaning is convenient, and the overall operation is convenient. The problem that sampling errors or errors are caused due to the fact that the puncture position is still prone to deviation when a diagnosis and treatment physician conducts puncture sampling manually is solved.