418results about How to "Reduce system error" patented technology

A medical instrument, in particular a generator for high-frequency surgery, comprises setting elements for presetting functions, and also functional elements for performing functions according to the settings. A controller interrogates the setting elements and controls the functional elements accordingly. Furthermore, a safety controller is provided for performing plausibility checks with the aid of information from the setting elements and also the functional elements, and for deactivating, or putting into a safe operating condition, the functional elements in the case of inadmissible working conditions.

The invention provides a method for carrying out high-throughput sequencing on a TCR (T cell receptor) or a BCR (B cell receptor). The method is characterized by designing upstream primers according to gene features of a V region of the TCR or the BCR and designing downstream primers according to gene features of a C region or a J region of the TCR or the BCR and obtaining sequences of the of the TCR or the BCR in combination with the multiplex PCR (polymerase chain reaction) technology and high-throughput sequencing, thus analyzing the rearrangement information of the TCR or the BCR. Compared with 25-30 cycles of existing multiplex PCR, two cycles of the multiplex PCR technology provided by the invention can conduce to greatly reducing the sequencing errors caused by primer amplification preference. Besides, the invention also provides a method for correcting multiplex PCR (polymerase chain reaction) primer deviation by utilizing DNA (deoxyribonucleic acid) tag sequences, thus further reducing the sequencing errors caused by primer amplification preference and intrinsic sequencing errors of high-throughput sequencing.

A system uses PLC programmable controller as a core with nine attachment units as pH on line detection unit, electric conductivity on line detection unit, flow rate on line detection unit, hardness on line detection unit, corrosion resistance on line detection unit, C1 concentration on line detection unit, automatic control unit for proportionally adding medicine, water supplementing automatic control unit and pollution discharging automatic control unit so that automatic control for adding medicine, automatic discharging of concentrated water and automatic supplementing of fresh water can be realized.

The invention provides an underground cable fault detection system and fault detection method thereof. The underground cable fault detection system comprises a cable fault ranging device, a cable pathdetection device, and a fault point detection device. The cable fault ranging device consists of a low-voltage pulse signal source, a high-voltage pulse signal source, and a high-speed receiving device to realize signal detection in a low-voltage pulse reflection method and a flashover method. The cable path detection device includes an alternating-current high-voltage signal source and an electromagnetic induction receiving device; the frequency and amplitude of the alternating-current high-voltage signal source are adjustable; the alternating-current high-voltage signal source excites a to-be-detected cable to generate an electromagnetic field; and the electromagnetic induction receiving device detects the electromagnetic field generated by the to-be-detected cable. The fault point detection device includes a high-voltage pulse signal source, a direct-current signal source, an alternating-current signal source, a step-voltage receiving device, an electromagnetic induction receivingdevice, and an acousto-magnetic synchronous receiving device. The underground cable fault detection system can be applied to detection of underground cable open-circuit, short-circuit, grounding, low-resistance, high-resistance flashover and high-resistance leakage faults to obtain an accurate fault point.

A method of using visual light and near infrared spectrum to identify variety of crop seed nondestructively includes fixing halogen lamp on A - frame, using power supply wire to provide 220V AC power to spectrograph and light source as well as computer, connecting spectrograph to computer through data line for transmitting collected data of sample spectrum to computer, carrying out process and analysis on collected data by spectrum special software ASD View Spec ProV 2.14 and Unscramble V9.2 then feeding analyzed data back to information platform for displaying variety of tested sample.

The invention provides a BD, GPS and MEMS based integrated navigation system and method on account of defects f prior navigation systems. The system comprises an MEMS-IMU module, a GNSS module, a magnetometer module and an integrated navigation computer. The MEMS-IMU module, THE GNSS module and the magnetometer module are connected with the integrated navigation system respectively. By the aid of the navigation method, corrected position values, speed values and corrected attitude angle values can be output. The system and the method have the advantages of being anti-overloading, miniaturized, low in power consumption and cost, provided with high impact resistance and particularly applicable to various war environments. By the aid of the navigation method, drifting of gyroscopes, accelerometer and magnetometers can be suppressed, and the stability and the accuracy of the system are improved.

The invention relates to a TOF depth camera three-dimensional coordinate calibration device and method based on a virtual multi-cube standard target. The device comprises a three-dimensional motion horizontally-moving platform, a TOF depth camera, a cubical target and a background board. The calibration method includes the steps that three orthometric one-dimensional motion horizontally-moving platforms move repeatedly in the three-dimensional direction, the virtual multi-cube standard target of a complex shape and with multiple feature points is formed, the space position and the three-dimensional measured coordinates of a target angular point can be accurately obtained, and high-precision three-dimensional coordinate calibration of the TOF depth camera is achieved. By means of the TOF depth camera three-dimensional coordinate calibration device and method, target angular point feature recognition difficulty of the TOF depth camera and measurement errors each time are greatly reduced, three-dimensional measurement precision of the TOF depth camera is improved, the angular point position and the number of feature points of the virtual multi-cube standard target can be set flexibly, and full-process high-precision automatic calibration is achieved easily.

The invention belongs to the field of an inert measuring technique or geophysical experiment and instrument, in particular to a dynamically rotary modulated north-seeking method for a gyroscope. The dynamically rotary modulated north-seeking method for the gyroscope provided by the invention aims to realize fast and precise north-seeking measurement under the condition that a carrier has a large attitude angle without leveling or knowing the latitude of a measuring point, so that the speed of geodesic operation is improved. A rotary table which rotates uniformly at an angular speed Omega is used. The rotary table is provided with the gyroscope and two accelerometers. The method comprises the steps of: first, solving an angle of pitch and a roll angle by the two accelerometers; then, solving the geographic latitude L and a course angle by the gyroscope; and after calculating an initial value, improving the precision by using a real time recursive least square method. The dynamically rotary modulated north-seeking method for the gyroscope provided by the invention has the advantages that fast and precise north-seeking measurement can be realized under the condition without leveling or knowing the latitude of the measuring point, so that the speed of geodesic operation is improved.

The invention discloses a batching monitoring and tracing method and system. The method has the following steps: data maintenance; order processing and recording; work order generation and processing; batching: providing work metering points, metering equipment initialization and automatic configuration, and automatic selection, work order taking and displaying, current raw material positioning and selection, raw material metering and automatic data recording, selecting metering point information or obtaining the metering point information through scanning bar codes, and taking work orders / batching sheets from a database; and history query, statistic analysis and log report outputting, which is used for historical metering data retrieval and displaying, and analyzing consumption amount of each raw material, consumption amount of raw materials in a preset time period and actual consumption amount of each raw material in a set work order. The batching monitoring and tracing method and system help to maintain ingredient data safely and conveniently, prevent various possible non-safety factors appearing in the raw material batching process, and realize data traceability in the whole process from system operation to the end.

The invention relates to an online projection objective wave aberration detection device and method. The detection device comprises a light source, a rotary scatterer, a first focusing lens, an optical fiber array, a second focusing lens, a scattering optical element, an object plane optical grating, an image plane optical grating, a two-dimensional photoelectric sensor, a phase-shift control module and a computer, wherein the rotary scatterer is composed of a support, an electric motor and a circular diffusion scattering optical element, and is combined with the multimode optical fiber array for converting a coherent light or partially coherent light source into incoherent light; ten interference fringe patterns with phase shifting amounts of 0, pi / 6, pi / 3, pi / 2, 2pi / 3, 5pi / 6, pi, 5pi / 3, 3pi / 2 and 11pi / 6 respectively are acquired to calculate a phase position and the influence of multilevel diffraction light interference of the optical grating on the phase position extraction precision is eliminated. The device and the method can improve the modulation effect of the object plane optical grating on the optical field spatial coherence so as to achieve a high-precision alignment effect, reduce the system error of phase position extraction in wave aberration detection and improve the wave aberration detection precision of an optical system.

The invention relates to a geophysical prospecting method which is a high-precision refraction static correction data inversion method. The method comprises the steps: the production shot first arrival data of an earthquake work area are collected; the refraction wave delay time is calculated out through the following steps; and the data of micro logging control points and the information of refraction delay time are used for obtaining the time-depth curve of the low deceleration layer of the work area. Micro logging control points provide a target layer depth (HD), a refraction result offered delay time tD, a comprehensive tD(HD) curve and a conversion tD curve, thereby obtaining a reliable surface structure model and a high-precision low deceleration zone static correction result profile map. The invention has the advantages that the depth curve constrains and inverses the delay time when the high-precision low deceleration layer is used; the depth errors caused by the inaccurate velocity are eliminated; the application condition is wide; the adaptability is strong; and the result precision is finally improved.

A control method for numerally controlled laser cutting machine features that a numeral control system is used to control said laser cutting machine, servo amplifier and servo motor. The PLC program of a computer in the numeral control system can execute such operations as enabling the computerized numeral control, detecting servo state, changing parameters of numeral control program, setting up the switch signals of each axises for original points, setting up laser frequency, duty ratio and climbing time, choosing laser mode and other parameters, reading BCD codes of auxiliary codes, converting them to decima numerals, and setting up the function of each code.

The invention discloses a manufacturing method of a double-high-energy-beam metal additive material. The manufacturing method comprises the following steps: (a) determining a three-dimensional entitymodel of a forming component, and modeling; and (b) manufacturing an additive material of the forming component: carrying out slicing and layering on a mathematical model in the step (a), so as to obtain two-dimensional outline information of a section of each layer and generate a machining route, inputting information into a control system of additive material manufacturing equipment, and manufacturing the double-high-energy-beam metal additive material by taking metal powder as the raw material according to a preset machining route. According to the manufacturing method, the internal defectsof pores, incomplete fusion, cracks and the like of a formed part are avoided, the system error of the formed part and an original design is small, and the formed part is relatively high in dimensional accuracy, small in residual stress, low in surface roughness and high in comprehensive quality; and compared with the prior art, the manufacturing method has significant progress and industrial application values.

The invention discloses a method for cultivating sweet potatoes. The method comprises the steps that the cirrus of the sweet potatoes is taken and cut to be a cuttage explant comprising stem sections and functional leaves but not a terminal bud; axillary buds of the cuttage explant are removed, then the cuttage explant is placed in a cultivation medium for rooting cultivation in a cuttage mode, and potato seedlings are obtained; the potato seedlings are transplanted to the cultivation medium to be cultivated after seedling hardening; axillary buds on the potato seedlings are prevented from growing all the time in the whole cultivation process. The method is simple, high in resource utilization rate, capable of improving the economic yield of the sweet potatoes, particularly suitable for production of potato seeds and mini sweet potatoes, and capable of improving the accuracy of relative experimental researches on the sweet potatoes and creating peculiar potted plants for viewing and appreciation.

The present invention provides a planar phased array antenna fast measurement and automatic calibration method. The method includes the following steps that: the patterns, amplitudes, phases and beam widths of measured phased array antenna units and a test probe are obtained through a near-field antenna test; the probe is arranged in front of a measured phased array antenna, one of channels in the measured phased array antenna is opened in turns with the other channels closed, the coefficients of transmission between each of the channels and the probe are tested; the transmission coefficient matrix of the whole array plane of the phased array antenna can be obtained; the initial phases of the channels are calculated through using relative position relationships between the probe and the measured phased array antenna units; and if the fluctuation of the initial phase of the array plane is larger than half of the minimum phase shift quantity of phase shifters used by the array antenna, the initial phase is calibrated. The method of the invention has the advantages of short testing time and high test precision, and can not only be used for the rapid amplitude-phase calibration of a planar phased array antenna, but also can be used for the automatic detection of the amplitude of the channel units of the antenna and the prediction of the far-field pattern of the planar phased array antenna.

The invention relates to a device and method for measuring curvature, friction, evenness and hairiness of yarn in a combined mode. The device is composed of a yarn guiding mechanism, a hairiness measuring mechanism, an evenness measuring mechanism, a force measuring mechanism, a dragging and winding mechanism and a bottom plate assembly and is further composed of a corresponding form and force signal collecting, driving control and processing system and a computer. The method for achieving the device comprises the steps that yarn is guided through the yarn guiding mechanism, and the yarn is dragged through the dragging and winding mechanism; the hairiness measuring mechanism is used for horizontally supporting the yarn and extracting the surface hairiness of the yarn, and the hairiness index is obtained through the processing system; a capacitance plate of the evenness measuring mechanism is used for obtaining the evenness of the yarn; a bending mechanism, composed of a pressing needle and double carrier rollers, of the force measuring mechanism is used for bending the yarn, and then the yarn anti-bent strength is obtained; a friction roller of the force measuring mechanism rubs with the yarn, the tension of the yarn before being input into the friction roller and the tension of the yarn after being input into the friction roller are obtained, and then the yarn friction coefficient is obtained. The device and method have the advantage of combining optics, electrics and mechanics measurement.

The invention provides an in-place measuring device and an in-place measuring method for electricity jumpiness of a main shaft rotation error. A laser displacement sensor, a first electrical vertex sensor and a second electrical vertex sensor are arranged outside a measured axisymmetric body, the first electrical vertex sensor, the second electrical vertex sensor and the laser displacement sensor arranged on the same circle, and the circle and the measure axisymmetric body are coaxial. An angle sensor is arranged in an axial position of the second electrical vertex sensor in a close mode. All the sensors are connected with a control module, the control module outputs a signal to an acquisition module, and the acquisition module is then connected with a host machine. According to the in-place measuring method for the electricity jumpiness of the main shaft rotation error, all the sensors are enabled to be in proper positions through regulating devices, when the axisymmetric body is measured, the axisymmetric body rotates, the rotating speed stays the same, measurement parameters are set in measuring software, the sensors start measurement and data acquisition, a computer analyzes and treats the data which are transmitted in, finally, measurement and treatment results are output.

The invention discloses a method for measuring purity values and uncertainty degrees of standard substances of phenol and hydroquinone. The method comprises the following steps: screening raw materials for purity qualification; performing qualitative confirmation on to-be-measured samples by combining a gas chromatography-mass spectrometry with a Fourier transform infrared spectroscopy; measuring the purity of the to-be-measured samples by combining three methods different in principle including a GC method, an HPLC method and a DSC method; sub-packaging the to-be-measured samples; checking uniformity and stability; calculating to obtain the uncertainty degree caused by purity measurement; calculating the uncertainty degree caused by the uniformity and the stability according to step four; and synthesizing all the uncertainty degrees to obtain a total uncertainty degree. The method provided by the invention has accurate qualification, reduces system error, adopts a strict statistical data processing method and a comprehensive uncertainty degree evaluation method, ensures accuracy, stability and traceability of measured values, and obtains high-purity standard substances of phenol and hydroquinone.

The invention provides a detection apparatus and a detection method for a photocatalyzed gas degradation rate. The apparatus comprises a completely sealed detection box; the top of the detection box is provided with an openable transparent box cover, the side wall of the detection box is provided with a self-sealing cable interface, an inlet valve and an air pressure balancing valve, a multifunctional rack is arranged in the detection box, a gas detector and ultraviolet lamps are fixed on the top of the multifunctional rack, an elevating sample bench is slidably connected onto the multifunctional rack below the gas detector, a convection blower is fixed at one side of the multifunctional rack, and the gas detector is connected with a computer arranged out of the detection box through a transmission cable passing through the self-sealing cable interface. The photocatalyzed gas degradation detection apparatus and the method provided in the invention have the advantages of a broad detection scope, high detection precision, good repeatability of results and capacity of obtaining a continuous smooth variation curve of gas content and time, are applicable to detection of gas degradation under photocatalysis and can accurately and conveniently evaluate degradation capability of photocatalyst products to gas.

The invention relates to a chemical luminescent immunodetection thyroid microsomal antibody detection reagent kit and a preparation method of the reagent kit. The reagent kit comprises a protein A antigen labeled with a tracer marker, or an anti-human IgG and anti-human IgM labeled with the tracer marker, a thyroid microsomal antigen coated with magnetic spheres, or a junction complex of a protein carrier and the thyroid microsomal antigen coated with the magnetic spheres. The invention also provides a method for detecting the concentration of the thyroid microsomal antibody. When the reagent kit provided by the invention is used for detecting the concentration of the thyroid microsomal antibody, the enzymatic reaction is not involved, and the bridging of enzyme is not needed, so that the reagent is long in preservation time and stable; the detection also can be carried out by virtue of a full-automatic chemical luminescent method, so that the operation time is shortened, the manmade operation error is reduced, and the sensitivity and the accuracy in detection can be improved by utilizing the specificity of the chemical tracer marker.

The invention discloses an improved method for carrying out rock shearing test by using a rock triaxial compression apparatus. An assembled die adopted for test of the rock triaxial compression apparatus comprises a jack pressure head (1), a pressure chamber (2), a pair of rigid stepped cylindrical base plates (5) and a pair of flexible semi-cylinder base plates (6). The assembled die adopted by the invention inherits the advantages of rock triaxial compression test, and steady confining pressure is provided for a rock sample (3) by the pressure chamber (2); according to axial force exerted when a rock sample is damaged and in combination with the elasticity modulus E1 of the rigid stepped cylindrical base plates and the elasticity modulus E2 of the flexible semi-cylinder base plates, pressures F1 and F4 applied by the two rigid stepped cylindrical base plates to the rock sample and pressures F2 and F3 applied by the two flexible semi-cylinder base plates to the rock sample can be computed, so as to further determine the shearing force delta F on the shearing surface of the rock; the shear strength of the rock can be obtained according to the relation between the shearing force and the shearing area on the shearing surface, so that a triaxial tester can be directly used for measuring the shear strength of the rock.

The invention belongs to a calibration method for a detector used for monitoring ion beam radiation. The cross calibration method used for the online beam monitoring detector in three-dimensional spot scanning beam distribution includes the following steps: (1) measuring response of a large-area parallel-plate ionization chamber to monoenergetic ion pen-shaped beams; (2) forming a calibration field with a diameter of 80 to 120 mm through spot scanning and measuring accumulated dose of a mini-size absolute dose ionization chamber in the center of the dose calibration field; (3) establishing a mapping relation between a central reading and a central dose; (4) calibrating practically. The cross calibration method used for the online beam monitoring detector in the three-dimensional spot scanning beam distribution provided by the invention has advantages that (1) frequency of using a complicated scanning system is reduced and experiment errors and uncertainty of dose calibration in the spot scanning beam distribution are reduced; (2) a complicated conventional method is replaced with the simple and quick method, so that online beam monitoring detector calibrating time is reduced and working efficiency is improved; (3) ion beam three-dimensional spot scanning beam distribution technology is improved and developed, so that convenience is made for adjusting and controlling exposure doses of different scanning spots in an exposure area for realizing three-dimensional intensity modulated irradiation.

The invention discloses an optical system with focusing and leveling sensing device that includes: light source module mounted consecutively along the transmission direction of optical path, illumination module, projected image module and detector module. The invention adopts the reflection system to avoid the color deviation influence of broad-band light; adopts the special stepped reflector to make the image center of facular point locate on the surface of silicon chip with ideal position, decrease the systematic measurement error, and improve measurement accuracy.

The invention relates to a device for testing a pipe resistance coefficient of a water supply pipe network. The device for testing a pipe resistance coefficient of a water supply pipe network comprises a pipe system, a pressure testing module, a flow testing module and a control system. The pipe system comprises a main pipe section, a branch pipe section, a front fire hydrant, a middle fire hydrant and a rear fire hydrant. The pressure testing module comprises pressure sensors. The pressure sensors are installed on the front fire hydrant and the middle fire hydrant. A rear control valve is arranged on the main pipe section. A front control valve is arranged on the branch pipe section. The pressure testing module is connected to the control system through an interface converter. The flow testing module comprises an ultrasonic flowmeter. The ultrasonic flowmeter is installed on the rear fire hydrant. An intelligent recording system is arranged in the control system. The device for testing a pipe resistance coefficient of a water supply pipe network is greatly developed in improvement of measurement accuracy, fast and accurate recording and high-efficiency data processing, provides a perfect method for accurate determination of a pipe resistance coefficient, and promotes the development of a pipe resistance actual measurement technology for a water supply pipe network.

The invention relates to a complete-polarization microwave radiometer calibrating device which comprises a calibrating hot source, a calibrating cold source, a polarization separator and a phase generator. The calibrating hot source is arranged on a horizontal plane or a vertical plane, the plane where the calibrating cold source is arranged is perpendicular to the plane where the calibrating hot source is arranged, the polarization separator is arranged between the calibrating cold source and the calibrating hot source, the polarization separator forms an 45-degree angle with the horizontal plane, and the plane where the phase generator is arranged forms a certain angle with the plane where the polarization separator is arranged. The complete-polarization microwave radiometer calibrating device effectively reduces system errors and random errors and greatly reduces calibrating uncertainty.

The invention provides an electrolytic tank for detecting corrosion resistance of a packing material. The electrolytic tank is sealed and provided with an upper cover and a cylindrical side wall, and takes a to-be-detected metal packing material, serving as a working electrode, as a bottom; the electrolytic tank is internally provided with electrolyte; a sealing ring is respectively arranged between the bottom and the side wall, as well as between the side wall and the upper cover to seal the electrolytic tank; the distance from the lower end of a reference electrode to the bottom is at least 1mm; a counter electrode is ring-shaped, and is arranged in the electrolyte and parallel to the bottom; the reference electrode is positioned in the center of the ring; the distance from the ring-shaped counter electrode to the surface of the electrolyte is one second or two thirds depth of the electrolyte, and the distance from the ring-shaped counter electrode to the bottom is not greater than the distance from the reference electrode to the bottom; and the upper cover is also provided with an inert gas inlet pipe and an air outlet pipe. The electrolytic tank can be used for imitating the actual use conditions of the packing material and reducing system error during detection; and the detected packing material can be re-utilized.

The invention relates to a calibration device and a calibration method of a position sensitive sensor. The device comprises a lighting unit, a double-optical-wedge unit, a direction sensitive optical path unit, a position sensitive sensor, a data acquisition and control unit and a CCD (Charge Coupled Device) beam monitoring unit. The calibration device and calibration method of the position sensitive sensor have the advantages that the structure is simple, the operation is simple, the calibration method is accurate and reliable, and the response range, the linearity, the accuracy and the dynamic response error of the position sensitive sensor can be quickly calibrated.

The invention provides a method and a device for enhancing spatial memory of water maze test animal. The method comprises a water tank for animal swimming and a platform arranged in the water, a camera and a computer system. The invention is characterized in that the method also comprises a visual reference system; the visual reference system arranges a septum above the surrounding of the water tank to isolate interference from outside; the visual reference system also arranges a plurality of fixed pictures on the internal side of the septum as memory reference of the animal and the fixed picture is contrast with the color of the septum. By building the water maze standard visual reference system, the invention ensures that the test animal can avoid interference from outside in the process of swimming, meanwhile, when the test animal swims in the water tank, the fixed picture in the system as the visual reference of the animal is good for enhancing spatial memory ability of the animal and reducing system error of a plurality of repeated tests. The test result shows that the invention can significantly enhance spatial memory of a rat in the water maze test and ensures that the spatial memory can maintain a longer time.

The invention provides an LED lighting-based color measurement multispectral imaging system. The system comprises a main control computer and a closed light box; the top of the light box is provided with a digital camera; the bottom of the light box is provided with an LED light group control device, a drawer type bearing stage and an LED light group; a measured object is arranged on the drawer type bearing stage; and the main control computer controls the spectral power distribution of the LED light group to be in a reciprocal relation with the spectral sensitivity curve of the digital camera, drives the LED lamp group control device to turn on a corresponding LED lights and control the lighting degrees of the LED lights, and controls the digital camera to shoot the image of the measured object when the LED lights are turned on and extracts camera response to perform calculation so as to obtain the spectral reflectance of each pixel of the measured object. With the LED lighting-based color measurement multispectral imaging system of the present invention adopted, conventional limitations can be broken. The LED lighting-based color measurement multispectral imaging system is applied to fields where a conventional color measurement instrument cannot be used.