43results about How to "Satisfy sampling requirements" patented technology

The invention discloses an asymmetric phase encoding ranging method applied to a laser radar system. The laser radar system uses a typical phase encoding method and has high system hardware demands. The method provided by the invention comprises the steps that a laser in the laser radar system emits a laser signal with constant intensity; a modulator carries out intensity modulation according to a modulation signal sequence; the modulation signal sequence is an m sequence; a demodulator carries out intensity demodulation on an echo signal according to a demodulation signal sequence; a strobe mode is used to control cumulative detection time and output of a detector; the detector outputs cumulated signals to a signal processor; the signal output order of the detector shows a correlation peak position, so that the signal processor directly determines phase difference between a demodulation signal and the echo signal; and according to the phase difference, target distance is calculated. According to the invention, the asymmetric phase encoding method is used to measure the target distance; the sampling rate requirement of the system on the detector is reduced; and the calculation amount of signal processing is reduced.

The invention discloses an efficient screw-in soil sampling device. The efficient rotary soil sampling device comprises a bracket and a sampling barrel, wherein a moving rod is arranged in the sampling barrel; the left side of the moving rod is fixedly connected with a pulling tray; the tail end of the right side of the moving rod is fixedly connected with a moving block; the moving block is pressed against a fixed block; the left side of the fixed block is fixedly connected with a sampling pipe; a sliding plate is arranged below the sampling pipe; a sample box is arranged below the sliding plate; the sample box is provided with a plurality of independent sample grids. A screw-in driving device is provided, so that a sampling depth can be reached accurately, and the sampling accuracy is increased; the sampling barrel is provided to obtain soil samples at different depths by one-time perforation, and the sampling efficiency is increased; the rotary sample box which is provided with the independent sample grids is provided for separating and storing soil samples, so that mutual pollution among the soil samples is avoided, the samples are prevented from falling off at the same time, the sample quantity is ensured, and sampling demands are satisfied.

The present invention relates to a system for realizing simultaneous measurement of a combustion temperature field and a velocity field, comprising a first CCD camera, a first light split wedge and alaser. A second CCD camera is disposed at bottom left of the first CCD camera and an imaging plate is mounted at the right side of the second CCD camera. A Longkey grating is disposed at the right side of the imaging plate and a first plane reflecting mirror is mounted at the right side of the Longkey grating. A second light split wedge is disposed below the first light split wedge and the first light split wedge is located below a second plane reflecting mirror. The laser is mounted at the right side of a synchronous controller and the synchronous controller is located below the second CCD camera. The system combines a particle image velocimetry (PIV) with a light deflection imaging principle for measuring a three-dimensional velocity field of a flow field using the PIV and measuring a three-dimensional temperature field of the flow field using the light deflection imaging principle. While the two are combined, the three-dimensional velocity field and temperature field of the combustion field are simultaneously obtained.

The invention discloses a dual-polarization broadband weak coupling feed source array and relates to a phase array feed source receiver in the radio astronomy field. The dual-polarization broadband weak coupling feed source array can be used in feed sources of reflector antennasin the field of communication, observing and control and monitoring. According to the distribution rules of a reflector antenna focal plane field, a hexagonal reflection back cavity vibrator is distributed in a hexagonal small-space distribution mode to form a feed source array, so that energy receiving is facilitated, sampling of a focal plane field distribution is met, and good broadband characteristics and weak array coupling can be achieved. The hexagonal reflection back cavity vibrator comprises a radiator, a coaxial feeder, a hexagonal reflection back cavity and a matching disc, wherein the reflection back cavity adopts a small hexagonal structure, and array forming is facilitated.

The invention discloses a phase encoding laser imaging radar based on microwave photonic signal processing. The detection of a phase encoding signal requires rapid signal sampling of a high speed detector. The laser signal sampling speed of an array detector applied to a laser imaging radar is limited by a production process, which cannot meet the signal sampling speed requirement of a large-array phase encoding laser radar. The resolution of phase encoding laser imaging radar ranging is low. According to the invention, an optical device is used; a microwave photonic signal processing method is used to complete the convolution process of an echo signal and a reference signal; the convolution process comprises the product process of the echo signal and the reference signal in a laser modulator / demodulator and the accumulation process of signal product in an accumulation type detector; the limits of the sampling rate of the detector and total signal bandwidth on range resolution is broken; the requirement on the sampling rate of the detector is reduced; and the range resolution and the signal processing rate of a laser radar system are improved.

The invention provides a soil sampling device. The soil sampling device comprises an outer pipe, wherein a hollow sampling head is arranged at the lower part of the outer pipe; the sampling head is provided with a peripheral side wall for forming a hollow inner cavity; the sampling head is provided with a sampling hole communicated with the hollow inner cavity; an inner rod which can move back and forth in an up-down direction is arranged in the outer pipe; the inner rod is provided with a blocking structure for correspondingly opening and blocking the sampling hole when the inner rod moves up and down; the sampling hole is formed in the peripheral side wall; the sampling hole is provided with an inner hole which extends to an inner wall surface toward the hollow inner cavity of the peripheral side wall; the inner hole is higher than the bottom of the hollow inner cavity in the up-down direction; and the blocking structure is located in the hollow inner cavity and is used for opening and blocking the sampling hole through controlling the opening and closing of the inner hole when the inner rod moves up and down. Soil entering the hollow inner cavity falls into the bottom of the hollow inner cavity, and the soil is not pushed out of the hollow inner cavity by the blocking structure on the inner rod, so that the sampling success rate is improved.

The invention provides an automatic measuring system and method for a layered water pumping test of a deep hole including multiple water-bearing strata. The system comprises a water-bearing stratum packer used for isolating the multiple water-bearing strata, and a data collecting and processing device used for measuring the hydrogeological parameters of different water-bearing strata. The data collecting and processing device comprises an aboveground data processing and displaying unit and an underground data collecting unit, wherein the aboveground data processing and displaying unit and the underground data collecting unit are arranged in a sealed shell. A communication cable of the underground data collecting unit penetrates through the water-bearing stratum packer to stretch into the water-bearing strata underground and is used for collecting dynamic information of the water-bearing strata. The aboveground data processing and displaying unit is used for receiving the dynamic information and further processing the dynamic information so as to generate hydrogeological parameter data. By the adoption of the automatic measuring system and method, the multiple water-bearing strata can be isolated from one another, and the hydrogeological parameters of all the water-bearing strata are measured and displayed in real time; moreover, the measuring range is wide, the sampling frequency is adjustable, and the requirements for the modernization layered water pumping test can be met.

The invention relates to an automatic sampling device of a dissolution tester. The automatic sampling device comprises a multi-channel valve group, wherein the multi-channel valve group comprises fivebranches; a power pump is connected with a public channel of the multi-channel valve group; a sampling needle is connected with the first branch of the multi-channel valve group; a dissolution cup isconnected with the second branch of the multi-channel valve group; a sample injection needle is connected with the third branch of the multi-channel valve group; a liquid supplementing groove is connected with the fourth branch of the multi-channel valve group through a liquid supplementing pipeline; the fifth branch of the multi-channel valve group is communicated with external air. According tothe automatic sampling device of the dissolution tester, provided by the invention, the power pump can be communicated with the corresponding pipeline under different conditions; in an automatic sampling process of a dissolution experiment, operation including automatic sampling, automatic liquid supplementing, automatic pipeline emptying, automatic pipeline washing and the like can be rapidly and accurately finished; sampling requirements of pharmacopeia on the dissolution experiment are met; accurate, reliable and efficient sampling is realized, and a condition that a sample is polluted byadjacent sampling points is avoided.

The invention discloses a device for detecting an oxygen concentration, and relates to the gas concentration detection technology field. The device comprises a detection circuit board. A detection channel is arranged in the detection circuit board. The detection circuit board is detachably connected with the detection circuit board. Sealing layers are arranged at two ends of the detection channel respectively. Supersonic wave transmit-receive sensors are arranged at two sides of the detection circuit board respectively. The probes of the supersonic wave transmit-receive sensors are sealed by the sealing layers at two ends of the detection channels respectively. A gas sample channel is arranged above the detection channel. The gas sample channel is parallel to the detection circuit board and is arranged crossed with the detection channel. One end of the gas sample channel is equipped with a gas inlet, and the other end of the gas sample channel is equipped with a gas outlet. A diffusion channel is arranged between the gas sample channel and the detection channel. The structure is simple and reasonable, measuring is accurate, and the cost is lowered.

The invention relates to a real-time linear sampling device for a mass spectrometer in a range of high pressure less than 20MPa. The sampling device comprises an independently installed stainless steel capillary tube for sampling in a high-pressure environment and a driven pump group connected to the mass spectrometer cavity. The device is characterized in that it also includes an independent single-stage differential pump group or independent two-stage differential pump group. The device provided by the invention meet the demand of sampling in a wide-range dynamic air pressure environment through ultrahigh vacuum equipment at low cost, realizes linear response of mass spectrum signals, and also can keep an optimized air pressure work environment of vacuum protected work test equipment. All the sampling meets the requirements of real-time sampling, no time delay exists, the response to trace component collection is sensitive, the device is simple in installation, and is helpful for environmental monitoring or chemical reaction basic research.

The invention provides a portable device and method for radioactive element enrichment sampling. The device comprises a water pump and an enricher, wherein the water pump is used for drawing a water sample from water to be sampled and enabling the water sample to flow into the enricher; an absorber is arranged in the enricher, and the enricher is used for performing radioactive element enrichment sampling on an inflowed water sample by utilizing the absorber. Through the use of the device, the environmental water sample can be directly extracted, a radioactive isotope in a very low content in the environmental water sample is enriched, the radioactive isotope with enough activity is accumulated for achieving subsequent measuring sensitivity, and particularly the device is suitable for sampling and collecting a caesium isotope. The device replaces a traditional sampling method of transferring a big-volume water sample to a laboratory, and the device has the advantages that the size is small and exquisite, and the structure is compact, so that the device is convenient to carry and transport.

The invention discloses an automatic sampler of submarine hydrothermal solution, comprising an opened valve cavity, a sampling cavity, a temperature measuring circuit cavity, and a temperature displaying circuit cavity, which are arranged on a support. In the sampler of the invention, an electronic-controlled trigger mechanism arranged in the opened valve cavity is used for controlling the sampling valve to realize the automatic sampling. The sampler can measure and display the temperature of the hydrothermal solution in real time during the sampling process, thereby facilitating the finding of the optimal sampling point. The sampler has compact overall structure and small size, is suitable for the operation of a diver or a bathyscaphe manipulator, and can meet the requirement of hydrothermal solution sampling in the shallow sea and the deep sea.

The invention provides air quality detection equipment and method. The air quality detection equipment comprises a dust particle concentration measuring module, a pollution gas concentration measuringmodule and an air driving module, wherein the dust particle concentration measuring module is used for measuring and sampling dust with different grain diameters respectively; the pollution gas concentration measuring module is serially connected with the dust particle concentration measuring module, and is used for carrying out synchronous sampling on the concentration of pollution gas; the airdriving module is used for driving air to flow through the dust particle concentration measuring module and the pollution gas concentration measuring module. Synchronous and accurate sampling and accurate measurement for dust particles and pollution gas are realized by setting the dust particle concentration measuring module and the pollution gas concentration measuring module; the sampling speedand measurement response speed of pollution gas are improved by setting the air driving module; the dust particle concentration measuring module and the pollution gas concentration measuring module are serially connected in the flowing direction of air, to fulfill the purpose of synchronous sampling, so that the integration of equipment is improved, and the equipment size and processing difficultyare reduced.

The invention relates to a combined optical fiber EFPI broadband PD ultrasonic detection system. The system comprises a light source, an optical fiber 1 / 2 optical splitter, an optical fiber, an optical fiber coupler, a first optical cable head, a first 16-core optical cable, a second optical cable head, an optical fiber EFPI sensing combined probe, a third optical cable head, a second 16-core optical cable, a fourth optical cable head, a multi-path photoelectric detector, a first coaxial cable, a broadband signal superposition and amplification device, a second coaxial cable and a high-speed data acquisition device. Compared with the prior art, the system has the advantages that the problem that an EFPI sensor working at the existing resonant frequency can only be used for narrow-band measurement of ultrasonic signals is solved, and the frequency band requirement of the partial discharge ultrasonic signals of 20 kHz to 500 kHz is met.

The invention discloses a sulfur hexafluoride sampling system. The system comprises an electronic mass flow controller, a pressure sensor and a voltage monitoring module, which are all connected witha processor CPU through an A / D conversion module; and the system further comprises the processor CPU, a display screen, a keyboard, a solenoid value, a vacuum pump and a power supply circuit, whereinthe processor CPU is further connected with the electronic mass flow controller through a D / A conversion module; the processor CPU is also connected with the display screen for displaying flow data ofsulfur hexafluoride; the keyboard is connected with the processor CPU and used for inputting a control signal for the sulfur hexafluoride flow; the processor CUP controls the solenoid valve and the vacuum pump through a driving circuit; the power supply circuit is connected with the processor CPU and used for providing power for the whole system. The sulfur hexafluoride sampling system provided by the invention is invented to be portable, has own batteries and also can be connected with an external power supply, wherein a fast pipe insertion connection mode is used for a gas path connector, and thus, works can be carried out quickly at site. For the sulfur hexafluoride sampling system, intelligent automatic operations are realized through a system on chip integrated circuit, all switchingon and switching off and flow control can be in timed control through programming, and a status alerting and warning function is provided.

The detection structure for simultaneously detecting the hot carriers of several MOS devices includes: at least one polysilicon grid; source region and drain region separately on two sides of the polysilicon grid; virtual polysilicon grid separately on two sides of the source region and the drain region; several welding pads corresponding separately to the polysilicon grid, the source region, the drain region and the virtual polysilicon grid; and metal wires connecting the polysilicon grid, the source region, the drain region and the virtual polysilicon grid separately to the pads. By means of the control of the switch matrix in the testing stage, the present invention can test the hot carrier implantation of at least three MOS devices connected in parallel.

The invention discloses a sampling and sample preparation system for a cross-double rail train. The system is characterized by comprising lifting devices sampling trolley buses, sampling motors, an operating room, electromotors, a transverse support frame, vertical support frames, crushers, a PLC controller and dividers, the middle portion of the transverse support frame is provided with the operating room, the two ends of the transverse frame are slidably provided with the sampling trolley buses, the crushers are arranged on the lower portion of the sampling trolley buses, the dividers are arranged on the lower portion of the crushers, and sample collectors are arranged on the lower portion of the dividers; when sampling is carried out on the double-rail train, the sampling requirements of a large quantity of raw materials are met, the processes of sampling and sample preparation are performed separately for centralized management, the sampling speed is quick, the arrangement of a roller press and drying device can meet different requirements of sample preparation, the practicability is improved, when a sampling machine samples, the relative speed between a sampling machine and atrain carriage is zero, and no relative displacement occurs to cause the damage of the sampling machine; the servo performance is strong, and the protection function is strong.

The invention provides a soil sampling device. The soil sampling device comprises an outer pipe, wherein a hollow sampling head is arranged at the lower part of the outer pipe; the sampling head is provided with a peripheral side wall for forming a hollow inner cavity; the sampling head is provided with a sampling hole communicated with the hollow inner cavity; an inner rod which can move back and forth in an up-down direction is arranged in the outer pipe; the inner rod is provided with a blocking structure for correspondingly opening and blocking the sampling hole when the inner rod moves up and down; the sampling hole is formed in the peripheral side wall; the sampling hole is provided with an inner hole which extends to an inner wall surface toward the hollow inner cavity of the peripheral side wall; the inner hole is higher than the bottom of the hollow inner cavity in the up-down direction; and the blocking structure is located in the hollow inner cavity and is used for opening and blocking the sampling hole through controlling the opening and closing of the inner hole when the inner rod moves up and down. Soil entering the hollow inner cavity falls into the bottom of the hollow inner cavity, and the soil is not pushed out of the hollow inner cavity by the blocking structure on the inner rod, so that the sampling success rate is improved.

The invention discloses a river ecological restoration system. The river ecological restoration system comprises a river ecological data analysis system and an ecological implementation system, the analysis method of the river ecological data analysis system specifically comprises the following steps of S1, water balance calculation, S2, leaked water calculation and S3, separation and reasoning ofthe climate change and human activities on the water resource influence quantity. The invention relates to the technical field of basin resource protection and utilization. According to the river ecological restoration system, the guarantee degree of drainage basin ecological water, the natural vegetation coverage and the change characteristics of soil drought are compared and analyzed before and after large drainage basin comprehensive management, and the guarantee effect of a large drainage basin comprehensive management mode on ecological water supply under the climate change background is quantitatively evaluated;; by constructing a quantitative relation model among river runoff volume, seepage quantity and a tree annual ring standard annual table, a new idea of reconstructing riverseepage quantity by using the tree annual ring standard annual table is provided, and water resource optimization management of a similar drainage basin in an arid region is realized.

The invention discloses an extension rod smoke gun which comprises a sampling head, an extension rod, an extension rod sealing connection assembly, a sampling assembly and a smoke gun handle, wherein the sampling head is arranged at one end of the extension rod smoke gun and is connected with the sampling assembly; one end of the sampling assembly is connected with the extension rod sealing connection assembly; the other end of the sampling assembly is communicated with the sampling head; the smoke gun handle is arranged at the other end of the extension rod smoke gun. The extension rod smoke gun is characterized in that the extension rod sealing connection assembly comprises a protecting pipe, a smoke dust pipe, a concave plug, a connecting nut and a convex nut; the protecting pipe is arranged on the outermost side of the extension rod sealing connection assembly; the smoke dust pipe is adjacent to the inner side of the protecting pipe; the concave plug and the convex plug are respectively arranged at two parts of the extension rod sealing connection assembly; a spring contact and a static contact are respectively arranged at the concave plug side and the convex plug side. The extension rod smoke gun disclosed by the invention has the benefits that sampling extension rods matched with the extension rod smoke gun can be selected according to different sampling conditions; after the extension rod smoke gun is detached, the whole length is short, so the extension rod smoke gun is convenient for carrying; besides, the sealing property of the connected part is good.

The invention provides a medical puncture device which comprises a puncture gun and a puncture needle. The puncture needle is provided with an operating mechanism and a clamping and locking mechanism in linkage with the operating mechanism, and the operating mechanism is exposed outside the puncture gun when the puncture needle is disposed in a containing cavity of the puncture gun; the operating mechanism is operated to drive the clamping and locking mechanism to move in the containing cavity, and the clamping and locking mechanism squeezes an elastic part in the containing cavity and is matched with a clamping and locking matching mechanism in the containing cavity to enable the clamping and locking mechanism to be in an elastic locking state. The medical puncture device is simple in structure, small in size and light in mass, convenience is brought to medical staff for actual use, and both structural stability and reliability are guaranteed.

The invention provides a positive pressure jet spiral sampling drill, which sequentially comprises a sampling drill, a spiral pump, an ejector and a joint outer sleeve from front to back. Materials are fed in a mode of matching the spiral pump with the ejector of the positive pressure jet spiral sampling drill, so that the requirement on the deep sampling of a coal bed can be met; meanwhile, the spiral pump and the ejector are integrated, air flow control when the cold bed is sampled by a small-diameter drill and reasonable solid-gas ratio in a drill pipe are matched by controlling the feeding speed of the spiral pump, the size of a jet hole of the ejector and compressed air pressure, so that the coherence of the sampling process is high, the drill pipe is prevented from being blocked by the materials and the sampling process is convenient and quick; in addition, intake air of a dual-wall drill pipe is controlled in the normal drilling process as required and sampling is performed at any time, so that arbitrary and accurate positioning is realized.

The invention discloses a dual-polarization broadband weak coupling feed source array and relates to a phase array feed source receiver in the radio astronomy field. The dual-polarization broadband weak coupling feed source array can be used in feed sources of reflector antennasin the field of communication, observing and control and monitoring. According to the distribution rules of a reflector antenna focal plane field, a hexagonal reflection back cavity vibrator is distributed in a hexagonal small-space distribution mode to form a feed source array, so that energy receiving is facilitated, sampling of a focal plane field distribution is met, and good broadband characteristics and weak array coupling can be achieved. The hexagonal reflection back cavity vibrator comprises a radiator, a coaxial feeder, a hexagonal reflection back cavity and a matching disc, wherein the reflection back cavity adopts a small hexagonal structure, and array forming is facilitated.

The invention discloses a transparent wafer edge extraction method of a pre-alignment machine, and relates to the technical field of semiconductors, and the method comprises the steps: collecting first light receiving data of a linear array type CCD sensor when a wafer is not placed, and enabling the first light receiving data to serve as a light source reference waveform; placing a transparent wafer to be detected and controlling the mobile platform to move to the edge of the wafer to be located in the detection range of the linear array type CCD sensor; rotating the transparent wafer to be measured, collecting second light receiving data of the linear array type CCD sensor, and extracting edge data from the second light receiving data; carrying out the differential processing on the edgedata and the light source reference waveform, and obtaining the shading position of the linear array type CCD sensor through processing; performing edge compensation correction on the shading position to obtain a compensated shading position of the sensor; and converting the digital-to-analog signal and then outputting the signal to the pre-alignment machine to obtain the edge position of the transparent wafer to be measured. The edge compensation correction improves the accuracy of wafer edge extraction, and the extraction method enables the existing pre-alignment machine to support the edgeextraction of the transparent wafer.

The invention relates to a real-time linear sampling device for a mass spectrometer in a range of high pressure less than 20MPa. The sampling device comprises an independently installed stainless steel capillary tube for sampling in a high-pressure environment and a driven pump group connected to the mass spectrometer cavity. The device is characterized in that it also includes an independent single-stage differential pump group or independent two-stage differential pump group. The device provided by the invention meet the demand of sampling in a wide-range dynamic air pressure environment through ultrahigh vacuum equipment at low cost, realizes linear response of mass spectrum signals, and also can keep an optimized air pressure work environment of vacuum protected work test equipment. All the sampling meets the requirements of real-time sampling, no time delay exists, the response to trace component collection is sensitive, the device is simple in installation, and is helpful for environmental monitoring or chemical reaction basic research.

The invention relates to a space storage battery monomer voltage high-precision sampling integrated module. Each function unit comprises a storage battery monomer voltage sampling unit and a storage battery monomer voltage sampling compensation following unit, which are packaged in the sampling integrated module, and a storage battery monomer voltage sampling compensation unit, which is arranged outside the sampling integrated module. The storage battery monomer voltage sampling compensation following unit is used for realizing impedance matching when a sampling voltage of the storage batterymonomer voltage sampling unit is subjected to error compensation; and the storage battery monomer voltage sampling compensation unit carries out positive and negative compensation on the sampling voltage through an external working voltage. The space storage battery monomer voltage high-precision sampling integrated module realizes high-precision sampling of monomer voltage under a high common-mode voltage based on an INA148 chip; error compensation pins can realize correction of sampling precision through external compensation, thereby meeting requirement for high-precision equalization management of a space high-voltage lithium ion storage battery group; and through design and flexible combination of 4 or 7 paths of space high-precision sampling integrated modules based on thick-film technology, common sampling requirements of a space power source at preset are met.

The invention relates to the technical field of marine sediment collection, in particular to a sediment collecting and slitting device suitable for surveying a benthic environment of a marine ranch. The sediment collecting and slitting device comprises a sampling frame, sampling tubes, a tuck net, a sample passing seat and a sample slitting ring, wherein the sampling frame comprises a frame body and a frame cover; the interior of the frame body is equally divided into a plurality of cells; the plurality of sampling tubes are placed in the different cells respectively; a hook connected with the frame body in a hooking manner is arranged on the free side of the frame cover; the tuck net is arranged on one side of the frame body; rubber plugs are placed in the tuck net. After the finish of sampling, the two ends of the sampling tubes are plugged by the rubber plugs, a top plate is arranged at the upper end of the sample passing seat, the rubber plugs at the lower ends of the sampling tubes are removed and sleeve the top plate of the sample passing seat during sample slitting, then the rubber plugs at the upper ends of the sampling tubes are pulled away, the sampling tubes are slowly moved downwards, and samples are exposed out of the sampling tubes and slit by the sample slitting ring. Due to the adoption of the sediment collecting and slitting device, a plurality of columnar samples are obtained in the same small area at the bottom of the marine ranch, and the samples can be quickly discharged during slitting and equally divided into two parts for different measurement to guarantee the consistency of measurement background.