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

The invention relates to high optical spectral image technique without harm to agricultural products. It can reflect the appearance of the agriculture products like color, shape, texture, dimension, scar and son on, and internal features like hardness, protein content and connected with knowledge base and experience of experts to make judgment. It can make quick, accurate, timely judgment of products, controlling the overall production with guarantee of the agriculture quality.

The invention discloses a mechanical soil-sampling device. The mechanical soil-sampling device comprises motors, a soil-sampling drill, a soil collection disc and a fixing box. A spiral inner groove is arranged at a lower end of the soil-sampling drill; outer edges of the spiral inner groove are provided with extended small flanges; the bottom end of the soil-sampling drill is processed into a cone-shaped drill head; an upper end of the soil-sampling drill is provided with a driven spur gear; the driven spur gear and a driving spur gear cooperate with each other thereby moving; the driving spur gear is installed on a main shaft of a first decelerator; the first decelerator is connected to an output shaft of a first motor; the main shaft of the first decelerator is fixedly connected to the upper end of the soil-sampling drill; the soil-sampling drill vertically and rotatingly move to pass through one of soil collection chambers; a baffle is installed in the fixing box and is located above the soil collection disc; and an end of the baffle extends into the spiral inner groove of the soil-sampling drill. The mechanical soil-sampling device has the advantages of convenient use, reliable running, simple structure, high efficiency and good applicability.

Images of farm animal products taken by CCD camera through image acquisition card are transferred to computer. Under certain condition (temperature, humidity and flow rate), smells emitted from farm animal products through mini pump with no oil are sucked into reaction chamber, where signals are generated by array of gas sensor. The said signals through conditioning circuit, A/D acquisition card are transferred to computer. Computer for simulating human brain to treat vision data and smell data carries out syncretizing and pattern recognition processing. Combining with experts' knowledge in knowledge base as well as experiences, computer makes judgment for qualities of garden spgarden stuff, meat and corns etc. synthetically.

The invention discloses a hydrogeological water quality sampling device and a using method thereof. The device comprises a base, a sampling pipe and an electromagnetic valve, wherein the sampling pipeis connected to the upper end of the base through a clamping groove, a water inlet is formed in one side wall of the sampling pipe, the electromagnetic valve is connected to the water inlet through apipe hoop, and a cover plate is connected to the upper end of the sampling pipe through a clamping groove. The device has the beneficial effects that the structure is novel, and the operation is convenient; as the base, the cover plate, the sampling pipe and the electromagnetic valve are arranged, a large number of sampling specimens can be accommodated; water areas with different depths can be sampled, research data are enriched, the accuracy of research results is guaranteed, a sampling specimen can be protected by arranging a protection box, a floating plate, a box door and an electric push rod, meanwhile, the sampling specimen can be prevented from being polluted by external soil, air and the like in the lifting process, and the safety of the sampling specimen is guaranteed.

The invention provides a novel hydraulic fixing type sampler and a sampling method thereof. The sampler comprises the following components from up to bottom in order: a drill pipe joint, an annular sealing cap, a vacuum inner pipe, an annular piston, a cylinder, a piston rod, a fixing pipe, a fixing ring, a top board and a sampling pipe; a cylinder is internally distributed with a pressure releasehole and a drain hole; a hydraulic transmission system is connected with a sampler at the upper part of the drill pipe joint through a drill pipe. The novel hydraulic fixing type sampler has the advantages of simple structure, rapid sampling speed, simple operation, high sampling quality, and low sampling cost; and a prospecting tool for civil engineering ground investigation.

The invention relates to a detection method and kit for oligonucleotides of a leukemia MEF2D-BCL9 fusion gene at different sites. The kit comprises a detection system PRC reaction solution, a primer pair, probes, a positive control and a negative control. A Taqman probe technology in real-time fluorescence PCR is used for detecting the expression condition of the MEF2D-BCL9 fusion gene in a patient and performing more accurate screening and identification on high risk groups, the kit has good specificity and high sensitivity, and the method has the characteristics of convenience and high efficiency.

According to an underground water stratified sampling device and the using method thereof, impurities can be prevented from being attached to the outer side of a filtering structure through rotation of an external structure, the problem of blockage of filtering holes is effectively solved through cooperation with a mesh blockage clearing structure, the normal water pumping efficiency during sampling is guaranteed, and meanwhile through a sampling mode of time division mistake, permeated mixed groundwater is conveniently isolated after comparison and sampling quality is ensured. The device is characterized in that the cross section of a lifting mechanism is triangular, a traction rope is arranged in the lifting mechanism through a pulley, one end of a connecting rod is fixedly arranged at the end of the traction rope, an upper sealing air bag is arranged in the middle of the connecting rod in a penetrating mode. A pressurizing air pipe is fixedly arranged at the top of the upper sealing air bag, a fixing plate is fixedly arranged at the other end of the connecting rod and is of a circular plate-shaped structure, at least six electric expansion pieces are circumferentially arranged at the bottom of the fixing plate, the bottoms of the electric expansion pieces are connected with a sampling barrel through piston rods, and the sampling barrel is hollow.

The invention relates to the technical field of deep sea sampling, in particular to a myriametre-scale deep sea autonomous bottom sediment detecting and obtaining device. A sampling cavity is arranged along the vertical direction, and an upper end cover and a lower end cover are respectively arranged at an opening formed in the upper part of the sampling cavity and an opening formed in the lower part of the sampling cavity; the upper end cover is connected with the upper end of the sampling cavity by a spring; an acoustic release transponder is fixedly arranged in a main body frame, and comprises a release device I and a release device II; a fixed end of the upper end cover is hinged to the sampling cavity, and a free end of the upper end cover is connected with the release device I by a thin mooring rope; a load rejection balancing weight is arranged under the main body frame, and is connected with the release device II by a hook; the lower end cover comprises a rotary bracket and a sealed spring sheet; one end of the rotary bracket is hinged to the upper end of the sampling cavity, and the other end of the rotary bracket is fixedly provided with the sealed spring sheet; the rotary bracket is connected with the release device I by a thin mooring rope. The myriametre-scale deep sea autonomous bottom sediment detecting and obtaining device has autonomous floating ability, can dive by loading the balancing weight, and touches the sea bottom for sampling by means of gravity; the device is easy to manufacture, low in production cost, simple and convenient to install, high in efficiency, safe and reliable.

The invention discloses an offline information setting method and device for realizing event conversion probability prediction. The method comprises the steps of obtaining event occurrence probabilities corresponding to a plurality of first event conversion probability prediction samples in a first sample set; compressing the feature space formed by the features contained in the plurality of firstevent conversion probability prediction samples to obtain a plurality of second event conversion probability prediction samples to form a second sample set; according to the event occurrence probability, screening out a second event conversion probability prediction sample of which the event occurrence probability meets a predetermined requirement from a second sample set; generating a predictionset according to the screened second event conversion probability prediction samples; predicting the event conversion probability of each event conversion probability prediction sample in the prediction set, and forming offline information for predicting the event conversion probability. According to the invention, offline information used for predicting the event conversion probability can be generated rapidly and conveniently, so that the probability of further conversion of the to-be-predicted sample can be improved.

The invention discloses a vacuum centrifugal machine, and belongs to the technical field of centrifugal machines. The vacuum centrifugal machine comprises a centrifugal machine body, a rotor and a vacuum pump. A centrifugal cavity is formed in the centrifugal machine body. The rotor is arranged in the centrifugal cavity and provided with a plurality of containing grooves. Hanging baskets are clamped in the containing grooves and used for containing to-be-centrifuged samples and can centrifuge the multiple samples at the same time without mutual interference. The distances between the hanging baskets and the rotating axis of the rotor are the same, so that the centrifugal effect of all the samples is consistent, the centrifugal efficiency is high, and installing and using are convenient. The vacuum pump is connected with the centrifugal machine body and used for pumping and draining gas in the centrifugal cavity, so that the temperature in the centrifugal cavity is lowered, the degeneration of the samples is prevented, and the quality of the centrifuged samples is ensured. The vacuum centrifugal machine is high in efficiency, the quality of the samples is not affected before and after centrifuging, the centrifugal effect is good, and the internal structure and installation are simple.

The invention discloses an electric control constant-temperature asphalt fume sampling gun, and belongs to the field of sample collection. The gun comprises a shell, wherein a horizontal rotating shaft is rotationally connected to the bottom of the shell, right threads are fixedly connected to the right side of the horizontal rotating shaft, the outer sides of the right threads are in threaded connection with a right rotating sleeve, the left side of the horizontal rotating shaft is fixedly connected with left threads, the outer sides of the left threads are in threaded connection with a leftrotating sleeve, the left threads and the right threads are same in thread pitch and opposite in spiral direction, inclined rotating rods are rotationally connected to the upper side of the left rotating sleeve and the upper side of the right rotating sleeve, limiting sliding grooves are formed in the middles of the left side and the right side of the inner wall of the shell, a limiting sliding block is slidably connected inside each limiting sliding groove, and a horizontal sliding plate is fixedly connected between the limiting sliding blocks on the two sides. Compared with the prior art, the gun has the beneficial effects that structure is simple, use is convenient, during use, asphalt is heated through a heating supporting plate made of a ceramic material, it is guaranteed that the heating temperature of the asphalt is stable, so that the sampling gun can accurately sample asphalt fume at the temperature of 42 +/-10 DEG C, and the sampling quality is ensured.

The invention discloses an impact power head and audio frequency power head integrated vehicle-mounted drilling machine. The drilling machine comprises a power driving device, a connecting device anda power head device. The power driving device is connected with the connecting device and the power head device. The power head device is connected with the connecting device, and the connecting device can be used for adjusting the state of the power head device. The power head device comprises an audio frequency drill bit and an impact drill bit. When the drilling machine works, the two kinds ofdrill bits can be switched to be used, the defects that when a direct push type technology is adopted, the sampling depth is small and the stratum adaptability is poor are overcome, and the defect that when a single audio frequency technology is adopted, the sampling price is high is also overcome; and under the condition that the maximum stratum adaptability, sampling quality and sampling depth are ensured, optimization of economy and maximization of efficiency can be achieved.

The invention relates to a preparation method of a metallographic specimen of an oriented silicon steel continuous casting billet. The preparation method comprises the following steps: 1) performing blank processing; 2) performing acid etching; 3) preparing mixed powder; 4) sample loading; 5) mounting a sample; 6) grinding the sample; 7) roughly polishing the sample; 8) finely polishing the sample. The metallographic specimen is inlaid by adopting mixed powder consisting of micron-sized metal powder and micron-sized bakelite powder; in the sample preparation process, it is ensured that microcracks of oriented silicon steel are filled with molten mixed powder inserts, the cleanliness of a polished surface cannot be affected by the microcracks in the subsequent sample grinding and polishingprocess, and therefore the quality of a metallographic sample is ensured; the polished metallographic specimen can be directly subjected to inclusion observation or structure observation after corrosion, and an accurate analysis result is provided for scientific research and production.

The invention discloses a sampler for chemical petroleum low liquid level sampling, which comprises a sample storage cylinder, a sealing cover body, a liquid inlet adjusting assembly and a traction rod assembly, wherein the sealing cover body is coaxially arranged with the sample storage cylinder, the liquid inlet adjusting assembly is connected with the sample storage cylinder in a relative sliding manner through the sealing cover body, the traction rod assembly is fixedly connected with the sample storage cylinder; the sample storage cylinder, the sealing cover body, the liquid inlet adjusting assembly and the traction rod assembly form a sampler body; the liquid inlet adjusting assembly is used for controlling a petroleum sample entering the sample storage cylinder, and the traction rodassembly is used for being connected with an external traction device. The sampler of the invention is convenient for workers to carry on the premise of ensuring the collection quality of petroleum samples, thereby effectively ensuring the working efficiency of the workers; in addition, the sampler body is designed in a split mode, so that the sampler body can be conveniently cleaned in all directions, and the accuracy of experimental data is effectively guaranteed.

The invention provides a switching-on control method for an alternating-current switch of a grid-connected inverter. The switching-on control method comprises the following steps: real-time sampling is performed on power grid voltage and inversion current; coordinate transformation is carried out on the power grid voltage and the inverter current to obtain a voltage component and a current component; the current component is processed through a virtual impedance loop to obtain a corresponding output current component; the voltage component of the power grid voltage and the output current component are superposed to obtain a modulated wave component; coordinate transformation is carried out on the modulated wave component to obtain a multi-phase power grid voltage modulated wave, and pulsewidth modulation is carried out on the multi-phase power grid voltage modulated wave to generate inverter circuit drive; the voltage difference between the voltages at the two ends of the AC switch and the power grid voltage is determined to be within the preset range, the AC switch is controlled to be switched on, the problem that the AC switch has no impact current is solved, and the technical problem of large open-loop control inductive current is solved.

The invention relates to a device and a method for making a vibration reduction clad sheet steel T-shaped peeling strength sample, comprising a rack, wherein an electronic control vise, a damping bonding material removal device and a bent T-shaped device which are all fixed on the top surface of the rack; the electronic control vise is located between the damping bonding material removal device and the bent T-shaped device; a PLC is fixed on the rack; the PLC stores a control program for making the vibration reduction clad sheet steel T-shaped peeling strength sample; the PLC executes the control program, the electronic control vise clamps a to-be-clamped sample, a band saw blade on the damping bonding material removal device gradually removes part of the damping bonding material downwards, a spile oscillating deck on the bent T-shaped device is inserted into a cavity, with damping bonding material removed, of the to-be-made sample, and and bends steel plates at two sides of the to-be-made sample. For the sample made by adopting the technical scheme, the remaining damping bonding material and the steel plate retain the original state, the steel plates at two sides are bent symmetrically, and the T-shaped surface flatness is good.

The invention discloses a surface water sampling device for water quality detection. The device comprises a cylinder body, a telescopic mechanism positioned in the cylinder body and an opening mechanism positioned on one side of the cylinder body. Compared with the prior art, the surface water sampling device for water quality detection adopts a telescopic spring to ensure that a cover body shields an opening, so that when the device enters water, surface water cannot enter a water storage layer; a floating ball in a second cavity is lifted upwards after being stressed, the telescopic spring is pressed to bend a bending mechanism, a second connecting rod is pushed to move rightwards to drive the cover body and a communicating pipe to move rightwards to open the opening in the communicatingpipe, so that the communicating pipe communicates with a water inlet passage, water enters the water storage layer through the opening mechanism, and the device is reasonable in structure, has a delayed sampling function, guarantees the water sampling quality and is suitable for popularization.

The invention is an extensible large-scale biomedical sample visualization platform. The platform comprises a sample statistics module, a visualization module, a retrieval module and a mongodb database system. And the user logs in the platform to carry out identity and authority verification, and after the user completes the authority verification, the user adds data information to the platform and uploads the data information. And carrying out quality inspection on the added data information, and storing the data information passing the quality inspection into a mongodb database system. And the user comprehensively retrieves the sample information existing in the mongodb database through multiple conditions, and checks the statistics of the retrieval result. And after the retrieval is completed, the platform counts the sample search results and presents the sample search results to the user in the forms of a visual chart and the like. Aiming at mass biomedical samples, more convenientdistributed deployment and extensible storage are realized, more convenient operation can be provided, and the biomedical sample management and use efficiency is greatly improved.

The invention belongs to the technical field of locking accessories, and particularly relates to a locking switch driving mechanism and a multistage mechanical matching type passive intelligent lock.The locking switch driving mechanism comprises a linear moving block and a servo driving assembly, and the servo driving assembly comprises a servo motor, a limiting moving frame and a transmission part; the transmission part is arranged at the output end of the servo motor, the limiting moving frame is arranged at the output end of the transmission part, and the limiting moving frame can be connected with the linear moving block in a clamped mode; the transmission component comprises a rotating shaft and a guide spring, the limiting moving frame is rotationally connected to the rotating shaft, a guide protruding block is arranged on the circumferential side wall of the rotating shaft, the rotating shaft is sleeved with the guide spring, the two ends of the guide spring abut against the limiting moving frame, and the guide protruding block is slidably connected with a threaded groove of the guide spring. A rotating shaft with a protruding block and a spring structure are adopted to simulate a lead screw transmission system, and the situation that the movement path of the switch is affected by deviation of the output end of a linear mechanical telescopic driving structure is avoided.

A net rack type soil test automatic sample separation device comprises a steel wire soil cutting net rack, an electric push rod, a combined support and a control cabinet. The steel wire soil cutting net rack consists of a net rack and a plurality of steel wires; the steel wire soil cutting net rack is arranged over the top of the control cabinet and horizontally installed at the piston ends of themultiple vertically-arranged electric push rods. The fixed end of the electric push rod is installed on the control cabinet, the combined support is installed at the top of the control cabinet and corresponds to the steel wire soil cutting net rack up and down, a gap corresponding to a steel wire of the steel wire soil cutting net rack is formed in the combined support, and a control switch and areset switch for controlling the electric push rod are arranged on the control cabinet. The steel wire soil cutting net rack, the electric push rod and the combined support are adopted for automaticcutting and sample separation, and compared with a traditional manual sample separation mode, the labor is reduced, the working efficiency is improved, the automation level of the geotechnical technology is improved, the separation requirements of samples of different sizes can be met, meanwhile, standardization can be achieved, and the sample quality is guaranteed.