290results about How to "The test results are accurate and reliable" patented technology

A remote sensing image target detection method based on a deep neural network is provided. The method comprises: obtaining a training sample and carrying out a scaling preprocessing operation on the training sample; carrying out multiple types of labeling operations on a training sample image containing a remote sensing target and a remote sensing background in the preprocessed training sample; based on the maximum number of iterations, carrying out pre-training and fine-tuning operations on a selected deep convolutional neural network model to obtain a fine-tuned deep convolutional neural network model; processing a full-connected layer of the fine-tuned deep convolutional neural network model to obtain a fine-tuned deep full convolutional network model; and detecting the remote-sensing image target based on the fine-tuned deep convolutional neural network model and the fine-tuned deep full convolutional network model. The method has the advantages of a high detection speed and high detection accuracy, and can be widely used in the fields such as target detection, target tracking, intelligent navigation, urban planning and the like.

The invention discloses a plasma free nucleic acid extraction kit and application thereof, wherein the kit comprises (1) magnetic bead pyrolysis combination solution; (2) a first cleaning solution; (3) a second cleaning solution; (4) an elution solution. By using the plasma free nucleic acid extraction kit provided by the invention, the free desoxyribonucleic acid in the plasma can be fast extracted; in addition, the use is fast, simple and convenient; the centrifugation is not needed; once mass extraction only needs half an hour; the obtained nucleic acid has high quality; when the obtained nucleic acid is used for subsequent sequencing and detection, the result is accurate and reliable; the complete application to the existing noninvasive prenatal genetic testing technology can be realized; the important significance is realized in aspects of scientific study and clinic detection.

The invention relates to a passenger car safety pre-warning system based on visual perception and car networking. The passenger car safety pre-warning system based on the visual perception and car networking comprises a vehicle-mounted system (101), monitoring center software (102), a radio frequency identification (RFID) communication module (103), checkpoint software (104) and a driver RFID card (105). The vehicle-mounted system is responsible for acquiring and storing interior and exterior video images, and performing works of vehicle passenger capacity statistics, driver fatigue state detection, interior abnormal condition detection, manual alarm information detection, vehicle running information acquisition and the like. According to the passenger car safety pre-warning system provided by the invention, by acquiring a video image at the position of a car door and adopting a regional movement vector clustering-based passenger capacity detection method, accurate statistics of the number of people getting on or off a car is realized. By acquiring a face video image of a driver and adopting a fatigue detection method of self-template matching, the accurate detection of fatigue driving is realized, and therefore, the goal that the passenger car runs safety is achieved. By using the intelligent video analysis-based overload detection technology, the passenger car safety pre-warning system is high in detection precision. A detection result can be transmitted to a monitoring center by 3rd generation (3G) communication, and is transmitted to a checkpoint by RFID, and thus, the passenger car safety pre-warning system automatically gives an alarm after discovering overload and is convenient to supervision.

The invention discloses a dynamic monitoring system and a monitoring method of deep foundation pit confined water drawdown. The dynamic monitoring system comprises a monitoring well and is characterized in that a drawdown well pipe is arranged in the monitoring well; the bottom of the drawdown well pipe is provided with a filter pipe in a confined water layer area to be tested; the bottom of the filter pipe is provided with a precipitation pipe; the bottom of the precipitation pipe is sealed; a gap between the upper part of the drawdown well pipe and the hole wall of the monitoring well is filled with hole sealing clay; the gap between the lower part of the drawdown well pipe and the hole wall of the monitoring well is filled with waterstop clay; the gap between the filter pipe and the hole wall of the monitoring well as well as the gap between the precipitation pipe and the hole wall of the monitoring well is filled with gravel filter materials; the inner wall of the drawdown well pipe is longitudinally uniformly provided with a plurality of hole pressure sensors; each hole pressure sensor is respectively connected with a data acquisition instrument via a lead; the data acquisition instrument is connected with a monitoring computer; the filter pipe is communicated with an external water suction pump via a water suction pipe. The dynamic monitoring system has the advantages that confined water level drawdown can be dynamically, precisely and reliably measured, foundation pit confined water drawdown can be judged in real time, and time for a pumping well to stop working is determined.

The invention discloses a reciprocating type shaft seal sealing performance testing method and device. The device comprises a test bed frame, an outer cylinder, a sealing ring mounting loop for mounting of a sealing ring, a sealing main shaft, a pulling-pressing sensor, a supporting block, a reciprocating straight line moving device, an auxiliary device and a detecting device. The outer cylinder is fixedly arranged on the test bed frame through a support. The detecting device and the auxiliary device are connected with holes formed in the outer cylinder respectively. The sealing ring mounting loop is arranged in the outer cylinder. The two ends of the outer cylinder tightly press and seal the sealing ring mounting loop through end covers. The sealing main shaft is arranged in the outer cylinder and is connected with the pulling-pressing sensor through a coupler. The pulling-pressing sensor is connected with the supporting block which is connected with the reciprocating straight line moving device. The reciprocating straight line moving device, the pulling-pressing sensor and the auxiliary device are electrically connected with a data collecting control system.

The present invention discloses a time delay test system and method used for virtual reality helmet acceleration motion. The time delay test system used for the virtual reality helmet acceleration motion is characterized in that an arc-shaped scale, a virtual reality helmet and a camera are arranged orderly at intervals along a straight line and are fixedly arranged on a controllable rotating disc, a servo motor is arranged below one side of the controllable rotating disc, and the output shaft of the servo motor is fixedly connected with the controllable rotating disc; a display screen of the virtual reality helmet displays a virtual scale, the servo motor drives the controllable rotating disc to rotate at a constant angular velocity, and the camera shoots the arc-shaped scale and the virtual reality helmet on the controllable rotating disc; the interface of the virtual scale of the display screen of the virtual reality helmet in an image is analyzed to obtain the measurement amount, and further the delay amount of the virtual reality helmet is calculated. According to the present invention, a time delay test of the virtual reality helmet acceleration motion is realized, the total delay of the system is measured accurately, a view angle error brought by shooting can be avoided, the system accuracy is improved, and a final test result is accurate and reliable.

The invention discloses an overhead power transmission line vibration monitoring system and an overhead power transmission line vibration monitoring method. The monitoring system comprises a laser vibration-measuring device, an iron tower controller and a remote monitoring terminal, wherein the laser vibration-measuring device is connected with the iron tower controller through a lead; the iron tower controller is connected with the remote monitoring terminal through an optical fiber composite overhead ground wire; the iron tower controller comprises a case; a power supply module, a communication module, an alarming module and a control module are arranged in the case; the control module is respectively connected with the power supply module, the communication module and the alarming module; the communication module is connected with the remote monitoring terminal through the optical fiber composite overhead ground wire. Due to the fact that the vibration condition of a power transmission line is monitored in real time by a laser vibration-measuring method, the accuracy of monitoring result is improved; due to the fact that the movement track of the lead in a vibration process is measured and recorded in a non-contact way, the overhead power transmission line vibration monitoring system is not required to be mounted on the power transmission line, the mounting difficulty is reduced, and the mounting cost is reduced.

The invention discloses a device and method for testing a proximity sensor of a mobile terminal. The testing device comprises a storage module, a control module, a judgment module and an alarm module. The storage module is used for storing the screen-off distance, the screen-on distance, the screen-off time and the screen-on time. When the mobile terminal is in a non-screen locking state and the screen of the mobile terminal is lightened, the control module is used for controlling an analog barrier to firstly move to one screen-off position, and the judgment module is used for judging whether the screen of the mobile terminal is darkened within the screen-off time duration or not, wherein if not, the alarm module is controlled to give an alarm; and if yes, the control module is used for controlling the analog barrier to move to the screen-on position; the judgment module is used for judging whether the screen of the mobile terminal is lightened or not within the screen-on time, wherein if not, the alarm module is controlled to give the alarm. The proximity sensor of the mobile terminal can be automatically tested, and the testing result is accurate and reliable.

The invention discloses a test method for measuring humidification, disintegration and dispersion of a soil mass. The test method comprises the following steps: preparing a device for immediately measuring the change in weight of the soil mass, wherein the device comprises a bracket, a beaker, a netted plate, an electronic balance, a digital display type tension gauge, an electronic computer, and the like; placing the soil mass into a water solution for disintegrating; and utilizing the change in weight of the soil mass to calculate the disintegrating volume and disintegrating speed of the soil mass. The physical conception significance of the device is clear and definite; the data is automatically and immediately collected; the personal factor interference is reduced; a test result is accurate and reliable; the magnitude of the disintegrating volume of the soil mass under different medium environmental conditions is reflected; the disintegrating volume and disintegrating speed of the structural viscid soil mass in water are accurately measured; the test method is used for evaluating the demands of various projects on the soil mass and especially has an important significance in judging the dispersibility of the viscid soil; a humidifying test based on an existing standard regulation is replaced by the test method; and the method is applied to evaluating the humidification, the disintegration and the dispersion of the soil mass in hydroelectric engineering, road engineering, agricultural engineering, and the like.

The invention provides a Kinect-based call making and answering monitoring method of a driver. The method comprises the following steps: adopting Kinect somatosensory equipment to carry out image acquisition on a driving area, and carrying out face detection on an acquired image through a face strong classifier which finishes training; if a face is in the presence, adopting the Kinect somatosensory equipment to capture the limb movement of the driver, extracting the depth information of the driver, and constructing a human body limb structure bone diagram according to the extracted depth information; according to the human body limb structure bone diagram, independently calculating a relative distance between a head node and a left hand node and the relative distance between the head node and a right hand node; if the relative distance between the head node and the left hand node or the relative distance between the head node and the right hand node is smaller than a limiting value, judging as an abnormal driving state; and if the duration of the abnormal driving state exceeds a preset threshold value, giving an alarm. The Kinect-based call making and answering monitoring method has the advantages of being high in stability and accurate and reliable in detection results and improves driving safety.

The invention provides a rock tensile test device under a confining pressure effect and a test method thereof. The device comprises a component I, a component II, a connecting plate and a base plate, wherein the component I is equipped with a slide rail; the component II is equipped with a slide slot; under the restricting effect of the slide rail and the slide slot, the component II only can move along the vertical direction, and meanwhile, the pressure on a test machine is converted into a pull force for a sample; and the ball twisting form connection of a pull head and a cross beam can guarantee the stress acting on the center of the sample. The rock tensile test device provided by the invention has a simple structure, is reliable in test result, is capable of performing a rock tensile test under the confining pressure effect on a present tri-axial test machine, and is capable of greatly saving the test cost.

The invention discloses a quantification method for lithium deposition in a lithium ion battery anode. Lithium desorbed from a positive electrode forms a lithium dendrite in a negative electrode by low-temperature large-rate charging, and the lithium dendrite formed on the surface of the negative electrode after being desorbed from the positive electrode is quantized by subsequent lithium embeddedin a positive electrode material. According to a disassembling method for a low-risk cell, the lithium deposition amount in the negative electrode is quantified, thereby reducing the risk of operation. The test method is simple, and the test result is brief and reliable, so that the method is practical and feasible.

The invention provides a paddy rice yield genotyping primer set developed based on a KASP technology. A paddy rice yield gene comprises Gn1a, NAL1, Ghd7, Hd1, Ghd7.1 and Ghd8. The sequences of the primer set are shown in the formulas of SEQ ID NO: 1 to 18. The set of the KASP functional markers provided by the invention and the primer set can quickly detect the combination mode of yield gene functional alleles in rice germplasm. The primer set has the advantages of accurate and reliable detection result, simple operation and low cost. The method can realize the detection of important yield functional genes of a rice breeding material, and provide scientific guidance for breeding and improvement of novel varieties of high yield rice.

The present invention discloses a sample production apparatus and a sample production method of a layered rock-soil body sample. The sample production apparatus is characterized by comprising a first layer sample production device and a plurality of second layer sample production devices, wherein the first layer sample production device and the second layer sample production devices are movably connected, the first layer sample production device comprises a sample production base (1), universal cylinders (2) and an auxiliary cylinder (3), the sample production base (1), the universal cylinders (2) and the auxiliary cylinder (3) are sequentially and movably connected from bottom to top, the second layer sample production device comprises a sample production auxiliary top cover (9) and the two universal cylinders (2) arranged in an up-and-down manner, the sample production auxiliary top cover (9) and the two universal cylinders (2) are sequentially and movably connected from bottom to top, the connection surfaces of the movable connections are respectively provided with an annular concave groove (8), and O-shaped rubber gaskets (4) are arranged inside the annular concave grooves (8). According to the present invention, with the apparatus and the method, the densities of each layer of the rock-soil body sample can be accurately controlled, such that the accurate and reliable test result can be obtained when the unidirectional freeze thawing cycling test, the penetration test, the compression test and other tests of the layered rock-soil body sample are performed.

The invention discloses a detection kit and a method for copy number of spinal muscular atrophy pathogenic gene SMN1 based on a real-time fluorescence quantitative PCR (Polymerase Chain Reaction) technique. The detection kit comprises specific primers SMN1-F (SEQ ID NO.1) and SMN1-R (SEQ ID NO.2) modified by NO.7 exon locked nucleic acid of a pair of target genes SMN1, an SMN1 detection probe (SEQID NO.3), an SMN2 gene closed probe SMN2-B (SEQ ID NO.4) modified by SMN-P locked nucleic acid and 3'end C3Spacer, gene primers ALB-F (SEQ ID NO.5) and ALB-R (SEQ ID NO.6) of a reference gene ALB andan ALB detection probe ALB-P (SEQ ID NO.7). The amplification specificity and amplification efficiency of the SMN1 gene are enhanced by using locked nucleic acid modification; a stable reaction system for double amplification of the target genes and the reference gene is established by using a multi-PCR principle and optimizing reaction systems and conditions, and further quantitative accuracy and reliability of the copy number of the SMN1 can be ensured; good repeatability and high operability are obtained.

A quantitative tester of color anomalopia is composed of computer, high-performance color CRT display, standard photoelectric scaling system for human eyes, dedicated responsekeyboard, printer, light shield andmandible supporter. It has high automation level.

The invention relates to a force measurement composite device based on a serial connection principle. The force measurement composite device comprises a connecting rod, a dowel bar, a long range force transducer, a short range force transducer, an upper supporting plate, a lower supporting plate, a spring, a spring sleeve pipe, and a force transmission rack. The long range force transducer and the short range force transducer are respectively disposed on the upper end and the lower end of the connecting rod. The upper supporting plate is disposed between the long range force transducer and the short range force transducer, and the lower end of the short range force transducer is connected with the dowel bar, the lower end of which is connected with the spring. The part of the length of the dowel bar and the spring are disposed in the spring sleeve pipe, and the bottom part of the spring sleeve pipe is fixedly disposed on the lower supporting plate. The lower end of the spring is connected with the lower supporting plate, and the force transmission rack is disposed on the outer edge of the lower supporting plate, and a specific distance between the top part of the force transmission rack and the upper supporting plate is maintained in an initial state. The upper end of the long range force transducer and the lower end of the lower supporting plate are force bearing ends. The force measurement composite device has advantages of high measurement precision (high precision), large measurement load value range (long range), accurate and reliable testing results, and strong practicability.

The invention discloses a device and method for automatically testing the loose circle of surrounding rock in a dry hole. The device comprises a water injection capsule on the outside, a manhole robot at the bottom and a robot walking driving device. The water injection capsule comprises a plurality of water storage bags, and the adjacent water storage bags are communicated and connected through water-filled pipelines. The water storage bag at one end is provided with a water injection pipe and a tail exhaust pipe, and the water storage bag at the other end is provided with an end exhaust pipe. At least one acoustic wave emitting probe and at least one acoustic wave receiving probe are arranged in the water storage bags, and the acoustic wave emitting/receiving probes are connected with a loose circle tester through connecting wires. The manhole robot and the robot walking driving device are connected with a robot control device. The device is wide in application range, extremely small in water consumption, easy and convenient to use and capable of being applied to testing of dry holes and holes with water and is a rock and soil acoustic wave testing coupled system device which is wider in application range, more convenient to operate and more accurate in testing result.

The invention discloses a simulation system for monitoring and analyzing the dynamic releasing of pollutants in soil filling materials under a leaching state. The simulation system consists of eight subsystems, including a sample container external subsystem, a sample container internal subsystem, a high-pressure air supply subsystem, a leaching liquid pH (Potential of Hydrogen) value regulation and control subsystem, a water and air feeding pipeline subsystem, a sensor circuit subsystem, a computer control terminal subsystem and a leaching liquid organic matter separation subsystem, wherein amonitoring and analysis system is characterized in that the high-pressure air supply subsystem and the leaching liquid pH value regulation and control subsystem provide certain pressure gas and leaching liquid with a certain pH value for the sample container internal subsystem through the water and air feeding pipeline subsystem; pressure in the sample container internal subsystem, heavy metal pollutant concentration in the leaching liquid and the pH value signal of the leaching liquid are independently transmitted to the computer control terminal subsystem through the sensor circuit subsystem; and meanwhile, after parts of leaching liquid are separated and purified through the leaching liquid organic matter separation subsystem, organic matter analysis is further carried out, and therefore, the dynamic real-time monitoring and analysis of heavy metal pollutant and organic pollutant releasing in solid wastes can be realized. The system has the advantages of being convenient in operation, high in intelligentizing, good in dynamic leaching simulation effect and high in accuracy.

The invention provides a particle image speed measuring device and a particle image testing method, and relates to the technical field of three-dimensional fluid field testing. The particle image speed measuring device comprises a laser system, an acquisition system, a synchronizing system and a data processing system, wherein the laser system is used for generating two light sources of which light wave vibration directions are perpendicular to each other; each light source radiates one cross section; the acquisition system is connected with the data processing system and is used for acquiring image data of particles on the cross sections and transmitting the image data to the data processing system; the synchronizing system is connected with the laser system and the acquisition system respectively, and used for controlling the laser system and the acquisition system to be switched on and off synchronously; and the data processing system is used for storing image data, and used for analyzing three-dimensional fluid field distribution according to the data image. The particle image speed measuring device is convenient to operate and control and accurate in testing result. Due to the particle image speed measuring device, the particle image testing method provided by the invention can be used for providing precise and reliable analysis testing results.

The invention discloses a shoe moisture permeability and moisture absorbing performance test device. A weight measurement instrument is located at the bottom of the inside of a constant temperature and humidity box, a controller is arranged outside the constant temperature and humidity box, the weight measurement instrument in the constant temperature and humidity box is provided with a fixing frame, a shoe sample is located on the weight measurement instrument, the fixing frame is provided with a supporting rod, the supporting rod is provided with a supporting circular ring, a sample fixing frame used for fixing a sock-shaped cavity is located on the weight measurement instrument, a welt of the sock-shaped cavity made of a microporous film is placed in from the lower portion of the inside of the supporting circular ring, the upper portion of the supporting circular ring is turned outwards, the portion, exposed out of a shoe cavity of the shoe sample, of the sock-shaped cavity is provided with an auxiliary moisture retaining element, the upper portion of the supporting circular ring is provided with a sealing cover, and a temperature control device and a water circulating device of the sock-shaped cavity are connected with the controller through connection cables in a signaling mode. The test device is close to the state when a person wears shoes, and has the advantages that adaptability is high, the application range is wide and test data are accurate and credible.

The invention discloses a low field NMR (nuclear magnetic resonance)-based magnetic bead concentration detection method and application thereof, the method comprises the following steps: (1) preparing a series of concentrations of magnetic bead suspensions, using measured NMR relaxation time T as y-coordinates, using the magnetic bead suspension concentrations as x-coordinates to draw a magnetic bead concentration-relaxation time curve to obtain a magnetic bead concentration change sensitive area; (2) preparing a series of magnetic bead suspension standard samples with the concentrations in the sensitive area, using measured relaxation time Tsample as y-coordinates, using the magnetic bead suspension standard sample concentrations as x-coordinates to draw a sensitive area magnetic bead concentration-relaxation time standard curve; (3) preparing a magnetic bead suspension sample to be tested, diluting to the concentration change sensitive area, detecting the relaxation time Ttest, and obtaining the concentration of the magnetic bead suspension sample to be tested from the sensitive area magnetic bead concentration-relaxation time standard curve. The method can rapidly detect the magnetic bead concentration, provides effective and accurate quality control information to experimenters, and has important significance for the effective use and sorting and efficiency evaluation of magnetic beads.

The invention discloses a method for determining affinity of membrane protein and ligand based on liquid chromatography tandem mass spectrometry. The method comprise the following steps: a) purified membrane protein is assembled to a biomembrane simulation system Nanodisc, and then a detergent is removed; b) Nanodisc assembled with membrane protein and a compound are incubated for processing; c)a repetitive ultrafiltration method is used for enriching the compound having non-covalent binding with the membrane protein on the upper part of a filter membrane; and d)concentration of the compound at upper part is detected by using a liquid mass combination apparatus for identifying the compound having non-covalent binding with the membrane protein. The method is characterized in that the membrane protein is assembled to the biomembrane simulation system for processing a sample, and a liquid mass combination technology is used for determining the combination affinity of the micromolecule compound and the membrane protein. The method has the steps which do not depend on any marks and do not require an immobilization step, and has the characteristics of high flux, little sample requirement, simple operation and high sensitivity; is capable of screening mixtures and is suitable for detecting different kinds of membrane protein, and has good versatility.

The invention discloses a device for tensile test of a high temperature oxidizable metal material, comprising: a vacuum chamber, a vacuum chamber door, a vacuum system, a temperature control unit, anupper beam loading rod, an upper load transfer frame, a lower beam fixing rod, a lower load transfer frame, an upper ball hinged support, a lower ball hinged support, an upper clamp and a lower clamp;the vacuum chamber door is provided with a transparent observation window and is hinged to the vacuum chamber; the top of the vacuum chamber is a detachable cover; the vacuum system communicates withthe vacuum chamber; the temperature control unit is used for heating a tensile specimen and measuring the temperature of the tensile specimen; and the upper beam loading rod, the upper load transferframe, the lower beam fixing rod, the lower load transfer frame, the upper ball hinged support, the lower ball hinged support, the upper clamp and the lower clamp are disposed inside the vacuum chamber. The invention realizes the automatic centering of the sample through the synergistic relationship of the "circular collimation track-upper ball hinged support and lower ball hinged support-upper clamp and the lower clamp" to ensure that the axial force is uniform, Ensure accurate, reliable results and good reproducibility.