389results about How to "Meet detection" patented technology

The invention belongs to the technical field of non-destructive testing and measuring, and discloses a focusing rotary scanning photoacoustic ultrasonic blood vessel endoscope imaging device and a focusing rotary scanning photoacoustic ultrasonic blood vessel endoscope imaging method. The device comprises a photoacoustic ultrasonic endoscope imaging probe, a rotating connecting part and a peripheral circuit part, wherein pulse laser generates 90-degree reflection at the light outlet end and is irradiated on the blood vessel wall after being gathered by a cylindrical surface light gathering lens, photoacoustic signals are generated, a sound-sensitive element receives the photoacoustic signals, the photoacoustic signals are collected and recorded after being converted, the synchronous working of a data collector and a pulse laser is realized, triggering signals generated by the pulse laser trigger an ultrasonic pulse emitting and receiving device to emit electric signals, the electric signals trigger the sound-sensitive element to emit ultrasonic signals, the ultrasonic signals are reflected after reaching the blood vessels, are received by sound-sensitive elements and are collected and recorded after being converted, a step motor drives the device for carrying out scanning to obtain the whole blood vessel fault data, and photoacoustic and ultrasonic images are obtained after the processing. The sound-sensitive elements are shared by ultrasonic and photoacoustic images, and the high-resolution and high-sensitivity blood vessel internal ultrasonic photoacoustic imaging can be realized.

The invention belongs to nondestructive testing technology, and relates to a method for manufacturing a surface crack sample for a nondestructive testing sensitivity test. The method adopts a fatigue loading mode to manufacture a crack defect, and the operation is simple; the manufactured fatigue crack defect has small dimensions and belongs to typical crack defect. Therefore, the manufactured fatigue crack defect has excellent representativeness for natural crack defects. The method can successfully acquire crack samples with dimensions of natural cracks; and dimensions and shapes of the samples and directions and positions of the crack defects can meet most test requirements. The manufacturing process is easily controlled, which is particularly applicable to adjustment and experimental verification for circumferential magnetization detection sensitivity in magnetic particle testing, and the method can be applied to testing research of detecting sensitivity of the surface cracks in three nondestructive testing specialities, namely ultrasound, vortex and penetration.

The invention relates to the technical field of ATC responders, and discloses an automatic detecting system of an S mode responder. The automatic detecting system of the S mode responder comprises a control module, a signal processing module and a receiving and sending module, wherein the control module is used for sending inquiry data to the signal processing module, receiving responding data returned from the signal processing module, comparing and analyzing the responding data and originally-stored simulated responding data, and displaying the analyzed results; the signal processing module is used for analyzing and encoding the received inquiry data, then sending the inquiry data to the receiving and sending module, decoding the responding data returned from the receiving and sending module, generating a message format of the inquiry data and then sending the inquiry data to a control module; the receiving and sending module is used for achieving mutual transmission of signals between the receiving and sending module and the responder, and achieving frequency conversion, receiving and sending of the signals. According to the automatic detecting system of the S mode responder, accuracy detecting can be conducted on the specific field of the responding information of the S mode responder, manual detecting errors can be reduced, complex testing steps can be simplified, the testing period can be shortened, and working efficiency can be improved.

The invention discloses a method for setting decisional threshold value, which comprises determining decisional threshold value according to the maximum result of balanced difference of the false alarm probability and the detection probability of a node itself, receiving sampling data, calculating decisional quantity according to the sampling data, comparing the decisional threshold value with the decisional quantity, and judging whether current frequency band is occupied or not according to the comparing result. The invention further discloses a device for setting decisional threshold value. Through employing the technical scheme of the invention, the decisional threshold value can be reasonably set based on two factors of the detection probability and the false alarm probability during the process of energy detecting, which enhances detecting efficiency of the current frequency band, guarantees availability ratio of the frequency band, and finds an optimal solution between the detecting efficiency and the availability ratio.

The invention relates to a generating device of quasi-monodispersed submicron aerosol by using an evaporation condensation method. The generating device comprises a high-pressure gas source, a first filter, a sprayer, a diffusion desiccator, a second filter, a saturator, a reheater, a condenser tube, and a first valve as well as a second valve, wherein, the first valve and the second valve are respectively used for adjusting the flow capacity of the second filter and the saturator; the high-pressure gas source adopts a high-pressure air source; the reheater and the condenser tube adopt metallic conduits; a baffle plate is arranged at a jet exit of the sprayer; a screen mesh or a closing ring is arranged at the inlet of the condenser tube. The generating device is convenient and durable, the running cost is low, the median diameter in aerosol generating counting ranges from 0.08 micrometres to 0.5 micrometres, the geometric standard deviation is less than 1.3, the counting concentration ranges from 1*10<4> to 1*10<8>/cm<3>, the stability and the repeatability are good when in generation, and the requirements of various equipment inspections and experimental researches can be satisfied.

The invention relates to a sample pretreatment integrated chip which comprises a cover plate and at least one layer of structure plate, wherein the structure plate is provided with micro grooves and at least three holes communicated with the micro groove; and the micro grooves are at least two of the following grooves: a separation groove having a micro structure of cross-flow separation or cross-flow filtration, a purifying groove having a solid phase extraction micro structure and a mixed groove formed by converging at least two secondary grooves. The sample pretreatment integrated chip has the pretreatment functions of separation, filtration, mixing, purifying, and the like, is used for the pretreatment of samples of blood, urine, and the like and gains analysis samples of DNA, protein, amino acid, and the like which satisfy the follow-up detection need. The sample pretreatment integrated chip separates or filters granules or cells on the basis of the principle of cross-flow separation or cross-flow filtration, ruptures cells on the basis of the principle of a chemical method and purifies target molecules on the basis of the principle of solid phase extraction. The invention develops the integrated micro-fluidic chip for the pretreatment of multiple samples by adopting the micro-electromechanical system technology, has at least two sample pretreatment functions and has continuous and efficient sample pretreatment effect.

The invention relates to an integrated opto-acoustic, ultrasonic and opto-acoustic elastic endoscopic imaging device which is characterized in that the imaging device comprises a pulse laser, an optical filter, a diaphragm, an objective and an optical fiber coupler sequentially arranged along the transmission path of pulse laser and also comprises a multimode optical fiber, an optical fiber slip ring, a rotation component, a rotary step motor, an electric slip ring, an integrated probe, a translation platform, a translation step motor, an ultrasonic pulse transceiver, a time delay unit and a computer, wherein the computer is in signal connection with the pulse laser; the pulse laser is in signal connection with the time delay unit; the time delay unit is in signal connection with the ultrasonic pulse transceiver; and the ultrasonic pulse transceiver is in signal connection with the electric slip ring. The invention also relates to a method for imaging by using the imaging device. In the invention, three kinds of imaging can be obtained, the detection precision can be improved while multi-parameter and multi-scale information in blood vessels can be obtained, and the invention belongs to the technical field of blood vessel endoscopy.

A method for measuring geometric parameters of a track by adopting a camera comprises the following steps: a measuring vehicle is placed on the track to be measured; a camera device is fixedly installed on one end inside the measuring vehicle; an optical axis of the camera device is in parallel with the plane of the bottom of the measuring vehicle; two sign posts are arranged on the track at the other end inside the measuring vehicle and are respectively perpendicular to the two sides of the plane of the bottom of the measuring vehicle; the two sign posts are at different heights and at the distance of r; a cooperation sign is arranged at the top end of each sign post; the sign posts can only move in the direction perpendicular to the plane of the bottom of the vehicle and in the transversal direction; a wheel at the bottom of the sing post moves, and is tightly attached to the inner side of a steel track; when the measuring vehicle moves on the track to be measured, the camera device is utilized to capture images of the cooperation signs at different time; and the images is processed through image processing and data processing on a real-time basis so as to acquire the geometric parameters of the track. The method meets the requirements of modern track construction and development, satisfies the requirements of high precision, high reliability and high automatic degree detection, and has good application prospect in the railroad engineering field.

The invention relates to a rapid detecting technology for detecting mycobacterium tuberculosis through nucleic acid constant-temperature amplification and a kit for qualitative detection. The kit comprises an instrument-free DNA (Deoxyribonucleic Acid) extraction kit, a mycobacterium tuberculosis nucleic acid constant-temperature amplification reaction liquid, a contamination-prevention nucleic acid amplification product detecting device, mycobacterium tuberculosis positive control, and mycobacterium tuberculosis negative control. The kit disclosed by the invention has the advantages of high specificity, high sensitivity and high reaction speed, wherein 1-1.5 hours are only needed from the step of processing a single sample to the step of completing the detection; and the kit can simultaneously meet requirements on sample detection of medium flux and low flux and is particularly suitable for being used in field detection and primary hospitals, and one constant-temperature instrument is only needed in the entire reaction process.

The invention provides an electrochemical detection method for detecting trace heavy metal ions in water with a modified graphene oxide composite modified electrode. The method includes the steps that graphene oxide is ultrasonically dispersed into a Nafion solution containing bismuth, and GO-Bi-Nafion suspension is obtained; the polished, cleaned and dried surface of a glassy carbon electrode is uniformly coated with the GO-Bi-Nafion suspension, and a GO-Bi-Nafion/GCE is obtained. The developed graphene oxide material meets the requirements for detection and deep removal of heavy metal ions in water. The electrode material with high electrochemical activity has the advantages that sample treatment is easy, cost is low, the speed is high, and trace heavy metal can be detected when applied to electrochemical transducer rapid determination of heavy metal in water. In addition, the development of the heavy metal water pollution detection and treatment technology in China is promoted by the electrochemical detection method, and the modified graphene oxide composite modified electrode will have great economic and social benefits after industrialization.

The invention provides a real-time traffic light identification method. The method comprises following steps: acquiring traffic light information, and performing fusion processing on the traffic lightinformation and an original map to generate a marked map; associating the traffic light information with Road id of a corresponding road section and Lane id of a lane in front of a stop line respectively, and generating a first associated information table and/or a second associated information table; determining Road id of the road section and/or Lane id of the lane according to the current position of a vehicle and the marked map; judging whether the traffic light information exists in the road section in front of the stop line when distance between the vehicle and the stop line is in a preset range according to Road id of the road section and the first associated information table and/or Lane id of the lane and the second associated information table, and acquiring absolute position information of a light plate frame in the marked map and converting the absolute position information into pixel position information in a first image when the traffic light information exists; detecting and classifying a first ROI (region of interest) with a deep learning algorithm to obtain a traffic light state corresponding to id of a traffic light. Therefore, precision and speed of visual identification are increased.

The invention discloses a novel coronavirus multiplex PCR rapid detection kit. The novel coronavirus multiplex PCR rapid detection kit comprises PCR reaction liquid freeze-dried powder, primer pool freeze-dried powder and a buffer solution, wherein the primer pool freeze-dried powder comprises a primer pair and a fluorescent probe which are listed in a sequence table. Primer system optimization isperformed for detecting SARS-CoV-2 through multiplex PCR, brand-new primers and a brand-new probe pool are designed, and early rapid detection on the new coronavirus can be sensitively and specifically achieved clinically.

The invention relates to the field of multi-beam sonar underwater target detection and point cloud data modeling, in particular to a subsea pipeline detection and three-dimensional reconstruction method based on the multi-beam point cloud. According to the underwater sonar images obtained from multi-beam sounding sonar pipelines, the pixels are classified and extracted by threshold method to obtain three-dimensional point cloud data. Then, the denoising method based on density analysis is used to obtain the three-dimensional point cloud data of the pipeline after denoising. Then, the point cloud data of each section of the pipeline is fitted with a linear fitting method, and the radius of the fitted circle and the linearly varying center point of the circle are three-dimensionally reconstructed to obtain a three-dimensional picture of the pipeline; Compared with obtaining point cloud data through bathymetric points, the invention extracts point cloud data directly from sonar image, still can obtain more accurate point cloud model, and the calculation amount is small, which is suitable for detecting and three-dimensional reconstruction of various underwater pipelines.

The invention provides a stamping processing online visual inspection device and a stamping processing online visual inspection method. The device comprises a conveying mechanism, a position detection part, an image acquiring assembly, a central processing module, a control unit, a sound-light alarm part and a working table, wherein a visual inspection area of a material strip to be stamped is arranged on the table top of the working table. The non-contact detection method is adopted, the detection efficiency is very high and the online, timely and automatic detection demands can be met.

The invention belongs to the field of image processing, and relates to a monocular vision-based front vehicle detection and distance measurement algorithm. According to the method, the vehicle detection and vehicle distance measurement can be conducted by using a method of combining machine vision and prior knowledge and geometric algorithm. The method is realized by comprising the following steps: (1) converting a video image, acquired by a vehicular camera, into a grey image; (2) performing filtering and noise reduction processing to the grey image; (3) positioning and extracting a license plate area by utilizing a projection method, and determining four apexes of the license plate; (4) correcting the interior parameters of the camera by utilizing Tsai two-step algorithm and checkerboard algorithm; and (5) finally, calculating the distance of the front vehicle by utilizing P4P algorithm according to the obtained interior parameter of the camera and the apexes of the license plate. According to the method, the problem of excessive detection errors generated by using a machine vision method alone can be solved, the vehicle distance measurement can be accurately and effectively realized, and the real-time requirement on control of smart vehicles can be met.

The invention relates to a greenhouse control system based on a mobile intelligent terminal. The greenhouse control system comprises an information acquiring module, a data communication module, a could platform module, a microcontroller module and a mobile intelligent terminal, wherein the information acquiring module comprises a temperature sensor, a humidity sensor and an illumination intensity sensor; the data communication module is used for converting data into an electric signal through an A/D converter and transmitting the electric signal to the could platform module for analyzing and processing; the could platform module is used for realizing data format conversion, data forwarding and storage; the mobile intelligent terminal is connected with the internet and is used for achieving the aim of the environment condition and crop growth condition in a greenhouse are monitored on line by a user; and the microcontroller module is used for feeding an output value back to a comparator for comparing and reasonably regulating the output value. Compared with the prior art, the greenhouse control system has the advantages that the temperature, humidity and illumination intensity in the greenhouse are kept proper to provide a favorable growth environment for crops, in addition, the cost is reduced, and the personnel amount and workload are reduced.

The invention relates to a method for controlling steel inclusions and particularly relates to a method for controlling nonmetal inclusions in X70 stage acidoresistant pipeline steel. The method controls types, quantity and sizes of nonmetal inclusions in rolling plates by controlling content of molten steel to guarantee suitable calcium (Ca)/sulfur (S) ratio of (1.2-5.0). The method controls inclusions in steel plates and guarantees that the content of calcium oxide and sulfur oxide ranges between 85% and 90% and the content of other substances is within a range of no more than 10%, and steel plates are not easy to deform in the process of rolling; the quantity and sizes of inclusions are reduced greatly through long-time refining processing; and X70 steel plates produced by the method can meet requirements of various indicators (the crack length rate is no more than 15%, the crack thickness rate is no more than 5% and the crack sensitive rate is no more than 2%.) of Hydrogen Induced Cracking (HIC) in the test of HIC of an A solution, and the hazard of large-size strip-shaped manganese sulfate and strip-cluster-shaped calcium oxide-aluminum oxide series B type inclusions to acidoresistant pipeline steel is avoided.

The invention discloses an immune-fluorescence test strip component for rapidly detecting C-reactive protein quantitatively, a detection card component produced by the same and a method for preparing the same. The test strip component comprises a test strip and a platinum porphyrin marked specific antibody independently packed. The test strip comprises a bottom lining, a water absorption pad, coating analysis film and a sample pad. The coating analysis film is provided with a detection line and a quality control line, a specific antibody coated by the detection line is a C-reactive protein resistance monoclonal antibody, and a specific antibody coated by the quality control line is a rabbit intravenous gamma globulin (IgG) antibody; the detection card component comprises a test strip, a card box composed of a cover plate and a back plate and a latinum porphyrin marked specific antibody independently packed. The test strip component for detecting C-reactive protein in body fluid has the advantages of being simple in operation, rapid, sensitive, good in specificity and the like, and having good clinical application prospect.

The invention provides a method capable of adjusting the position of a suspended beam screw rod to a guide rail. The method includes the steps of aligning a special rack on the guide rail screw rod with the known accuracy, reading data on a data acquisition unit and zero clearing, arranging the adjustment rack on the parallel guide rail to be detected, clamping screw rod nut through a clamping device, contacting the screw rod nut with a pressure sensor, and displaying a pressure value of a contact point of a clamping device mechanical arm and the screw rod in real time by being connected with the data acquisition unit. The special rack is capable of slowly moving on the guide rail through rotation of the screw rod to achieve automatic detection. A dial indicator which is arranged on the special rack is capable of being used for detecting, when the screw rod is arranged or positional accuracy of the screw rod is periodically detected. The method capable of adjusting the position of the suspended beam screw rod to the guide rail has the advantages of being simple in structure, reasonable in design, high in installation accuracy, capable of automatically detecting, integral in installation and detection, easy to operate and convenient to handle. The invention further provides the special rack capable of adjusting the position of the suspended beam screw rod to the guide rail.

The invention discloses an obeticholic acid and a detection method for related substances in a preparation of the obeticholic acid. The detection method includes the specific steps that the high performance liquid chromatography method is adopted, and a C18 column is adopted; a diode array detector is adopted, and the column temperature is 20 DEG C to 30 DEG C; a phosphate buffering liquid-acetonitrile-methyl alcohol solution serves as a moving phase for isocratic elution. By means of the detection method, the conditions of impurities and degradation products of the obeticholic acid can be rapidly and accurately detected, effective separation of the obeticholic acid and all known impurities can be achieved, the interference of all kinds of impurities generated in the synthesis and preparation processes of the obeticholic acid in the product purity is avoided, and the quality of raw material medicine and the quality of the preparation can be fully and reliably controlled. The detection method is easy and convenient to operate, high in sensitivity and good in separation degree, and an effectively analysis method is provided for controlling the quality of the product.

The invention discloses an adjustable split-type movable hanging basket for bridge maintenance and an operating method. The adjustable split-type movable hanging basket for the bridge maintenance comprises two supporting cross beams, a counterweight platform, a constructing operation platform, walking devices and a hanging frame. During using in actual engineering, the walking counterweight platform with a locking function is placed on the inner side of a bridge guardrail and is spaced by a distance from the guardrail so as to provide a greater torque for a counterweight block, the constructing operation platform on the other side is placed on the outer side of the guardrail in a cantilevered manner, and the guardrail serves as a stressing fulcrum for the two supporting cross beams; according to different bridge types and guardrail sizes, the supporting cross beams of the hanging basket are transversely stretched and retracted and the hanging frame thereof is vertically stretched and retracted so as to meet constructing operation requirements; the hanging basket is moved to a position where the maintenance is required by pushing the walking counterweight platform, and walking wheels are locked by opening bolts fixed to walking wheel hoods, so that the guardrail and a lower flange plate can be maintained and repaired on the operation platform.

The invention provides a molecular detection primer of acidovorax avenae subsp. Citrulli and application thereof. The special primer comprises an upstream primer AIT1F: 5'-GCTGGATCACCTCCTTTCTG-3' and a downstream primer AIT2R: 5'-TGACGCAATCAAATTTTTGTCA-3'. Through PCG (Polymerase Chain Reation) amplification and agarose gel electrophoresis, a special amplification product with a fragment length of 462bp can be amplified in pure DNA of the acidovorax avenae subsp. Citrulli, a bacteria carrying disease plant tissue and a seed to rapidly detect the acidovorax avenae subsp. Citrulli. The special detection primer and the application thereof can be used for rapidly, sensitively and specially detecting the acidovorax avenae subsp. Citrulli in bacteria carrying watermelon seeds and plant seeds infected the acidovorax avenae subsp. Citrulli in production practice, can also be used for early diagnosis of field diseases and monitoring and identification of germs and provide a reliable technology and theoretical basis to control diseases caused by the acidovorax avenae subsp. Citrulli.

The invention discloses a long-distance online detection method and a long-distance online measuring device for multiple parameters of underground water. A control signal is sent to an on-site measuring instrument through a remote control instrument to rouse the on-site measuring instrument; in the on-site measuring instrument, an underground water sample drawing and cleaning device is used for drawing underground water to be tested, an underground water quality multiparameter detection device is used for detecting the underground water to be tested, detection data are sent back to the remote control instrument through GSM (global system for mobile communication), finally, the underground water sample drawing and cleaning device is used for cleaning a water sample passage therein so as to perform detection of the underground water to be tested for next time, thereby realizing long-distance online detection for the multiple parameters of the underground water. The method and device can be used for performing long-distance detection on chemical oxygen demand in the underground water quality and on substances such as nitrate ions and chromium ions as well as turbidity degree in the underground water, the disadvantage that traditional chemical detection causes secondary pollution to the environment is avoided, the period of underground water quality detection is shortened, the technological process of the underground water quality detection is simplified, and the fast and efficient detection requirement is met.

The invention relates to a radiation standard device with a mechanism preventing heat convection, mainly comprising a black furnace and a pressure adjusting unit. The black furnace has a furnace hole, the pressure adjusting unit being connected with the black furnace. The pressure adjusting unit adjusts press of an opening of the furnace hole according to temperature difference of external environment. The invention blocks heat convection between the furnace of the black radiation source and the external environment by controlling pressure change at the opening of the pressure adjusting unit, further providing a stable radiation standard source for correction and test service.

The invention discloses a system and method for controlling a head-up display based on vision. The system comprises an image collecting device, an illumination induction device, an illumination source and a processing device, wherein the image collecting device is used for obtaining image data in the driving environment; the illumination induction device is used for obtaining an illumination value in the driving environment; the illumination source is used for providing compensation illumination; and the processing device is used for processing obtained data. The system can intelligently achieve an awakening instruction, a music switching instruction, an incoming call receiving or rejection instruction and a page switching instruction. According to the system, it is preferred to adopt a near-infrared LED to provide illumination in the dark on the conditions of not disturbing the human eyes. The control method is convenient to operate, the instructions are clear and free of ambiguity, an additional device is not needed, and detection and identification of drivers' gestures under all weather and different illumination conditions can be achieved. Preferably, detection and identification of static gestures and dynamic gestures can be supported simultaneously, and an operation function is powerful.