1575results about How to "Guaranteed Sensitivity" patented technology

The invention discloses an in-hole drilling tool integrating drilling, slotting and punching a coal seam and a using method thereof. The in-hole drilling tool comprises a water supple device or an air supple device, a high-pressure sealing drill pipe, a slotting and punching valve and a drill bit. The water supply device and the air supply device are connected with the high-pressure sealing drill pipe at an orifice. The slotting and punching valve is installed between the high-pressure sealing drill pipe and the drill bit. The in-hole drilling tool is essentially used for drilling and anti-reflective outburst eliminating after drilling of soft outburst coal seam. The using method is as follows: after the drilling construction is finished, a water supplier with a pressure release valve is used for starting a high-pressure pumping station to improve the pressure and the flux for water supply; high-pressure water current at the pumping station drives the slotting and punching valve to act for closing an axial liquid passage and opening a radial liquid passage; and high-pressure jet current realizes slotting or punching through a cutting nozzle or a punching nozzle. The invention has novel design and easy operation, is safe and reliable, improves the outburst elimination efficiency and realizes the integrated operation of drilling, slotting or punching and outburst eliminating.

The invention discloses a low current earth fault location method based on transient state current waveform comparison and belongs to the filed of relay protection in an electric power system. A plurality of detection points arranged in an electric power circuit are utilized to upload fault zero sequence current data, and a master station receives and processes the data, and then conducts fault location judging. The location method is characterized by utilizing transient state zero sequence current similarity or/and polarity relationship to confirm a fault sector where fault points are located. The location method comprehensively utilizes the transient state zero sequence current similarity and the polarity relationship to conduct judging on the fault points, meanwhile is not influenced by unstable electric arc, can still precisely conduct location when the transient state zero sequence current similarity of the detection points on two sides of each fault point is high, and meanwhile has the advantage of being wide in application range.

The invention relates to the technical field of satellite fault diagnosis and fault-tolerant control, and proposes a fault diagnosis method, which has very good robustness to external interference, isfree of influence of external interference in a fault diagnosis process, prevents generation of misinformation and missing report, and can effectively estimate fault severity. According to the satellite fault diagnosis and fault-tolerant control method based on a self-adaptive observer, first a satellite kinematics and dynamics model under an actuator fault and external interference influence isestablished to analyze influence of fault effective factors on a system; secondly, an observer is designed for a satellite fault system, a residual error evaluation function is established based on observer output and system actual output, an evaluation threshold value is obtained, and the purpose of fault detection is achieved; then, when occurrence of a fault is detected, a self-adaptive observer is designed to complete a fault diagnosis task; and finally, based on an estimated value of the fault, a finite time self-adaptive fault-tolerant controller is designed. The satellite fault diagnosis and fault-tolerant control method based on a self-adaptive observer is mainly applied to fault diagnosis and fault-tolerant control occasions.

A pendulous eddy current tuned mass damper vibration reduction control device comprises a support and 1-4 mass blocks hung at the top end of the support through swing ropes, and an eddy current damping system and a guide mechanism are installed between each mass block and the support; each eddy current damping system comprises a permanent magnet and a conductor plate, the conductor plates are installed on the side faces of the mass blocks, and the permanent magnets are installed on the inner sides, corresponding to the conductor plates, of the support; the guide mechanisms are symmetrically installed on the two sides of the mass blocks in the swing direction, and each guide mechanism comprises guide plates fixedly installed on the two sides of the corresponding mass block and guide bearings installed on the inner sides of the support and making rolling contact with the corresponding guide plates. The support is provided with a pendulum length adjustment component and movable rolling wheels, the four corners of the pendulum length adjustment component are movably connected with the support, and a locking mechanism for fixing the swing ropes is arranged in a frame which is the pendulum length adjustment component. The control device is convenient to move in whole, frequency and damping coefficients are convenient to adjust, frictional damping is low, sensitivity of the mass blocks is high, the damping ratio of eddy currents can be freely adjusted within the range from 1% to 20%, and no additional rigidity is generated.

The invention provides a chromosomal aneuploid and copy number variation detecting method and application thereof. Particularly, sequencing is performed on whole genomes of to-be-detected samples, and sequencing data of the samples are obtained. When a certain chromosome in an embryonic cell is a trisomy chromosome or haplochromosome, the copy rate of the chromosome is increased or decreased compared with that of a normal diploid chromosome, information analysis is performed through biostatistics, and aneuploids can be accurately detected. An experimental result shows that the chromosomal aneuploid and copy number variation can be simply, rapidly and accurately detected through the method.

The invention belongs to the technical field of electronic technologies and photoelectronic imaging technologies, in particular relates to a single-photon avalanche diode and a three-dimensional CMOS (Complementary Metal Oxide Semiconductor) image sensor based on the diode. The single-photon avalanche diode of the invention improves the traditional rectangular photosensitive PN junction into a regular octagon and can conveniently and simply weaken edge breakdown and improve gain uniformity. A two-dimensional pixel array of the three-dimensional CMOS image sensor based on the diode comprises unit pixels of the regular octagon-shaped single-photon avalanche diode and is arrayed in a honeycomb-shape, thereby being convenient for interpolation and improving resolution in horizontal and vertical direction.

The invention discloses an industrial CT detection device and method based on a 3D sphere detection platform. The device is composed of a movable suspension arm unit, the 3D sphere detection platform, a radiation source detector scanning unit and a system console. Information feedback and collection are conducted through the system console, then a driving control instruction is sent, and then a movable radiation source and a detector reach a predetermined detection position. A universal driving wheel unit in the 3D sphere detection platform is controlled and driven to roll, so as to drive a spherical workpiece tray containing a workpiece to rotate along a required detection track, and scanning imaging is conducted through the radiation source detector scanning unit at the same time so that CT scanning detection can be achieved. An X ray machine and a linear accelerator are adopted as a radiation source, a linear array detector or digital flat-panel detector is used as an image detecting and receiving unit, detection range is widened greatly, traditional technical defects are overcome, detection sensitivity and precision are improved greatly, and the method is a better programmed industrial CT scanning detection method.

The invention provides a method for judging the pollution of a dust sensor, a wiping system and a cleaning robot thereof. The dust sensor comprises a pair of optical signal elements, wherein the pair of optical signal elements are arranged at both sides of a dust passage and respectively used for transmitting and receiving optical signals; and one sides of the optical signal elements, which are close to the dust passage, are respectively provided with a transparent plate used for keeping dust out and protecting the dust sensor. The method for judging the pollution of the dust sensor comprises the following steps of: carrying out analog/digital conversion on a real signal received by the dust sensor, and then solving an arithmetic mean value; and when the obtained arithmetic mean value is less than a certain preset value, judging that the transparent plates of the dust sensor need to be wiped. Thus the pollution degree of the transparent plates of the dust sensor is judged in real time, a wiping mechanism of the wiping system of the dust sensor is automatically started in time to wipe the transparent plates, therefore the accurate judgment of the dust sensor on dust quantity is effectively ensured, and the intelligent cleaning robot can normally work all the time.

A small current neutral grounding fault location method based on the direction of transient state reactive power is characterized in that change of voltage or current serves as a failure starting condition, and after the starting, the zero sequence voltage is taken as the participating voltage if a detection point can be used for detecting the zero sequence voltage and if not, the following steps are performed: 1, confirming the fault phase as per characteristics of three transient state line voltages, and 2, confirming the transient state line voltage including the fault message as per the type of the fault phase, taking the transient state line voltage as the participating voltage, confirming the characteristic frequency range, and further building a digital filter to filter the participating voltage and the zero sequence current signal, so as to obtain the component within the characteristic frequency range; and then confirming the direction of the reactive power of all the detection points through utilizing the components of participating voltage and the zero sequence current within the characteristic frequency range, so as to further confirm the fault section. According to the invention, the transient voltage and current signals as well as zero sequence voltage and line voltage are utilized at the same time, the positioning reliability is higher, the adaptability is stronger, quick direction protection for ground fault of all the voltage classes is applicable at the same time, and the protection speed and reliability are taken into consideration.

The invention relates to the technical field of biotechnology, and particularly discloses a kit for detecting retinol binding protein content by using latex immunoturbidimetry. The kit comprises a reagent R1, a reagent R2 and a standard product, wherein the reagent R1 is buffer solution with pH (Potential of Hydrogen) value of 6-9; the reagent R2 is latex reagent coated by anti-retinol binding protein double antibodies; and the standard product is retinol binding protein solution with pH value of 5-8. According to the kit, the retinol binding protein content in a sample can be detected by using the latex immunoturbidimetry; the sensitivity is high and can reach 0.042 mg/L; and the kit has the advantages of high stability, easiness and quickness in operation, high specificity, low probability of interference, accurate quantification and broad application prospect.

The invention provides a method for improving the sensitivity and linearity of a latex reagent. An adopted detection kit comprises a reagent R1 and a reagent R2. The method is characterized in that the latex reagent is a latex reagent mixed with latexes with large and small particle sizes, and is processed to prepare a C-creative protein latex turbidimetric detection kit, and the kit comprises the reagent R1 and the reagent R2. The method comprises the following steps: (1) directionally coating latex microspheres with large particle sizes with mouse to-be-tested antigen monoclonal antibodies; (2) directionally coating latex microspheres with small particle sizes with rabbit or sheep to-be-tested antigen monoclonal antibodies; (3) mixing the coated latex microspheres with the large particle sizes and the coated latex microspheres with the small particle sizes.

The invention relates to a detection method of determining 16 types of photoinitiators in a paper printing and packaging material, which is used for determining residual amounts of the 16 types of photoinitiators of 2-hodroxy-2-methyl-1-phenylacetone, mehtyl phenylglyoxylate, benzophenone and the like and is characterized by comprising the following concrete steps of: a, sample pretreatment; b, preparation of a standard work solution; c, instrumental analysis; and d, result calculation. Compared with the prior art, through sample pretreatment and optimization of instrumental analysis conditions, the detection method has the advantages that efficiency is high, the 16 kinds of photoinitiators can be simultaneously analyzed and determined within 25m; and printing ink impurities in a sample extraction solution can be better removed in a liquid-liquid distribution impurity removal mode adopted in the sample pretreatment process, so that cost is low, consumption is little, efficiency is high, and sensitivity is high; and in addition, the detection method also has the advantages of high accuracy and good repeatability.

The invention belongs to the technical field of detection and relates to a pretreatment method for biogen amine neurotransmitter and/or metabolites thereof. The method comprises the following steps of: performing derivatization on a sample containing the biogen amine neurotransmitter and/or the metabolites thereof, and carrying out online solid-phase extraction on derivatization products. On the basis, the invention also relates to a detection method for the biogen amine neurotransmitter and/or the metabolites thereof, a detection kit and application thereof. The pretreatment method has the advantages that impurities in the derivatization products can be eliminated, and after being enriched, the derivatization products with proper concentration are transferred into the following detection steps. The detection method has the advantages that the content of the biogen amine neurotransmitter and/or the metabolites thereof in a biological sample can be fast and accurately measured, and the detection sensitivity is high.

The invention discloses an infrared intelligent telemetering temperature control system and belongs to the technical field of cooking utensils. The system is characterized in that a gas stove and an infrared temperature detector are split, the temperature in a pan is detected in an overlooking manner by the infrared temperature detector; temperature information sensed by an infrared temperature sensor is converted into an electrical signal, the electrical signal serves as sampling information for temperature detection of the pan to be input into a program controller for calculation, and a gas solenoid valve is controlled to adjust the heat of a combustor. The system has the advantages that the cooking process is intelligent, free of oil fume and healthy; the sensor is far away from a stove cooking region with relatively serious oil fume pollution, the interference of flame at the bottom of the pan on the detection accuracy is avoided, and the service life of equipment is greatly prolonged; a function of automatically turning off the heat during lifting of the pan is added; a function of preventing dry burn during stewing is added; the operating habit of a conventional gas stove is basically not changed.

The invention discloses an intelligent assisting system of a nerve block anesthesia robot. The intelligent assisting system comprises a control system and an operating arm, an ultrasonic probe, a puncture needle, an anesthetic drug injector, a coupling agent sprayer, a disinfecting liquid sprayer and a sensing module which are connected with the control system, wherein the control system comprisesa computer system, and an operating table and a video system connected with the computer system; the operating table is used for controlling actions of all actuating mechanisms, and the video systemis used for acquiring and displaying data and image information of a surgical operation process in real time; a plurality of pressure sensors are respectively arranged on a main mechanical arm, a puncture mechanical arm and the anesthetic drug injector so as to measure and upload pressure data to the computer system of the control system. The intelligent assisting system of the nerve block anesthesia robot disclosed by the invention has the beneficial effects that the intelligent operation of nerve block anesthesia is realized, the accuracy and the sensitivity of the anesthesia are improved, even the wrong operation is reduced and meanwhile the working intensity of anesthesia doctors is relieved.

A method of measuring a shape of a specular reflective surface is provided. A pattern displayed on a surface of a target positioned at a target plane is produced from a specular reflective surface positioned at a measurement plane. An image of the reflection is recorded at an imaging plane. Positions of a plurality of points on the specular reflective surface relative to the imaging plane are determined. A first relation between feature positions on the image of the reflection and feature positions on the pattern is determined. The shape of the specular reflective surface is determined from asecond relation involving a surface profile of the specular reflective surface and the first relation using the positions of the plurality of points as an initial condition.

The invention discloses a capacitive single-mass block full comb electrode sensor for triaxial acceleration and a manufacturing method thereof, wherein the acceleration sensor uses single-mass block design, and x, y and z axis all use comb structures on the x y planes as induction acceleration electrodes. An inducing mechanism, which is produced by performing deep reactive ion etching on severelydoped monocrystalline silicon, is composed of a mass block, a spring mechanism and a comb structure. The spring mechanism comprises four groups of U-shaped springs and beam structures, which are symmetrically distributed; two groups of x axis comb mechanisms are symmetrically distributed in the x y plane along the x axis, taking the mass block as the centre; two groups of y axis comb mechanisms are symmetrically distributed in the x y plane along the y axis, taking the mass block as the centre; four groups of z comb mechanisms are symmetrically distributed in the x y plane along the 45 degrees and the 135 degrees lines taking the mass block as the centre. Triaxial acceleration measuring signal outputs do not interfere with each other. The invention achieves triaxial acceleration measurement with a single mass block and a full comb structure electrode.

The invention relates to a conjoint analysis method for estimating the DNA abundance of fishes based on an environment DNA technology. The conjoint analysis method includes the steps that the total DNA abundance of the fishes is acquired through timed and quantified PCR; the species composition proportion of the fishes is acquired through 454 GS-FLX Titanium sequencing analysis; conjoint analysis of target species is performed through sequencing data and timed and quantified PCR data; a relative distribution diagram of mitochondrial DNA of the fishes in an environment is drawn through sufer 8.0 software. Based on the environment DNA identification technology, weather species exist and how many species exist can be analyzed just by collecting water samples without depending on fish species capturing, a sampling method is simple, and fish resources can be protected to the maximum degree; meanwhile, for some species which are rarely distributed and difficult to capture, the method is still more effective than traditional fishing investigation, the method can effectively solve the problem that effective species specificity primers are difficult to obtain when multiple closely related species exist in samples, and NDA abundance information of all species can be known just by conducting experiment once respectively through the two technologies.

The invention discloses a hepatitis B surface antibody (HBsAb) magnetic particle chemiluminescent immunoassay kit and a preparation method thereof and the kit can be used to test the content of HBsAb in human serum fast and accurately. The kit of the invention comprises a mixed liquor of hepatitis B surface antigen (HBsAg) coated with magnetic particle and bioti-labeled HBsAg, horse radish peroxidase-labeled streptavidin, HBsAb calibrator, chemiluminescence substrate, concentrated cleaning solution and reaction tubes. According to the principle of the double antigen sandwich method, the magnetic particle immunity technology, biotin-avidin technology and chemiluminescence immunoassay technology are combined in the kit of the invention which has the advantages that the testing is fast, the linear range of the curve is wide, and the calibrator calibrated by national linear reference can be used to test the content of HBsAb in human serum accurately, thus processing important clinical application value.

The invention relates to an automatic reclosing lock device of a miniature circuit breaker. The automatic reclosing lock device of the miniature circuit breaker comprises a base, an upper cover, a transmission mechanism, a tripping mechanism and an electronic control unit, wherein the transmission mechanism comprises a reversing motor, an angle gear arranged on a rotating shaft of the reversing motor, a bevel gear meshed with the angle gear, a closing brake micro-switch and a separating brake micro-switch, wherein an universal driving shaft is arranged on the lower end face of the bevel gear, one end of the universal driving shaft penetrates through an installation hole in the base and connected to an operating handle of the miniature circuit breaker, and a manual operation switching mechanism/ an automatically switching mechanism are arranged on the base, corresponding to the bevel gear; the tripping mechanism comprises a iron core, a coil, a tripping shaft, a tripping piece and a photosensitive element, wherein one end of the tripping shaft is arranged in an arc hole, and the other end of the tripping shaft is connected to a moving contact support of the miniature circuit breaker; the electronic control unit controls the reversing motor to rotate forwards, to rotate backwards and to stop the motion, and the bevel gear is driven to achieve the automatic reclosing lock motion of the miniature circuit breaker. The automatic reclosing lock device of the miniature circuit breaker has the advantages of being simple in structure, and stable in performance.