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35results about How to "Guaranteed reading accuracy" patented technology
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Mechanical pointer pressure gauge reading identification method
ActiveCN110378326ARealize automatic identificationGuaranteed reading accuracyCharacter and pattern recognitionComputer scienceEngineering
The invention discloses a mechanical pointer pressure gauge reading identification method. The method comprises steps of carrying out image filtering and binarization processing; through two times ofHough transformation, acquiring an accurate instrument dial center coordinate. After dial contour extraction, carrying out polar coordinate transformation on the contour coordinate group; taking the center coordinate of the instrument dial as a circle center; carrying out scale search recognition, obtaining dial scale area, carrying out scale calibration in a scale identification result area; obtaining a calibrated two-dimensional vector about the angle and the scale; converting a scale identification problem into a two-dimensional vector processing problem; constructing a standard scale vector, calculating the distance between the two-dimensional identification vector of the angle and the scale and the standard scale vector, taking the minimum value of the distance between the two vectorsas the starting and ending positions of the standard scale, and solving the position of the pointer by adopting a method of solving the minimum value of the gray average value of the circular ring inthe scale ring. The method has the advantages that the mechanical pointer pressure gauge reading is automatically identified, and the reading accuracy is ensured.
Owner:河南博锐流体设备有限公司
Automatic interpretation method for telemetering slow variation parameter based on historical data statistical property
ActiveCN108491439AGuaranteed reading accuracyAvoid misjudgmentSpecial data processing applicationsHistorical modelData segment
The invention discloses an automatic interpretation method for a telemetering slow variation parameter based on a historical data statistical property. The method comprises the steps of 1, constructing a historical model database; 2, interpreting the parameter; 3, unifying sampling points of an effective data segment of parameter historical data to the sampling points of the effective data segmentof target data; 4, estimating the target data of the parameter; 5, estimating a standard deviation of the parameter; 6, dividing the target data into four intervals: 0-1 sigma, 1 sigma-2 sigma, 2 sigma-3 sigma and 3 sigma-4 sigma according to an estimated value and the standard deviation of the parameter target data; 7, counting a probability distribution of the parameter target data in each interval; 8, obtaining a potential abnormality parameter table; and 9, checking potential abnormality parameters one by one by an artificial expert based on the potential abnormality parameter table obtained by the abovementioned step and according to an auxiliary decision graph obtained by analysis to finally determine telemetering abnormality parameters in the flight process. With the automatic interpretation method for the telemetering slow variation parameter based on the historical data statistical property, the defects of low artificial interpretation efficiency and data utilization rate areovercome and a lot of manpower is saved for a test process of a carrier rocket and an aircraft.
Owner:中国人民解放军63729部队
Concrete biaxial strength measuring device and method
InactiveCN108760510AGuaranteed linearityAvoid lostMaterial strength using tensile/compressive forcesEngineeringUltimate tensile strength
The invention discloses a concrete biaxial strength measuring device, comprising a mounting bottom plate, a metal frame, a first bracket, a first sleeve ring, a locking pin, first mounting blocks andsecond mounting blocks, wherein a plurality of balls uniformly arranged are movably connected to the inner sides of the first mounting blocks, a pressure cylinder is connected between the outer side of the first mounting block on either side and the metal frame on the same side, a first mounting plate is arranged on the inner side of each first mounting block, the inner side of each first mountingplate is fixedly connected with a pressure loading head, a second sliding rod is fixedly connected to the inner side of each second mounting block through two second brackets, a second sleeve ring movably sleeves each second sliding rod, the outer side of each second sleeve ring is connected with a second mounting plate through a steel rope, the inner side of each second mounting plate is movablyhinged to a tension loading head, and a tension cylinder is connected between the outer side of the second mounting block on either side and the metal frame on the same side. The concrete biaxial strength measuring device can overcome the deficiencies in the prior art and has more accurate tensile strength test data.
Owner:ZHENGZHOU UNIV
Sensor weighing module
ActiveCN104931121AAvoid horizontal movementAvoid over-settling problemsSpecial purpose weighing apparatusFault toleranceEngineering
The invention belongs to the weighing and packing technical field and relates to a sensor weighing module for an automated production line. The sensor weighing module of the invention comprises a base, a beam type sensor and a bearing plate; the module also comprises supporting columns for supporting the bearing plate, wherein at least two supporting columns which are symmetrically distributed at two ends of the bearing plate along the central line of the bearing plate exist; one of opposite surfaces of each supporting column and the bearing plate is provided with a spherical matching part, and the other surface of the opposite surfaces is provided with a hemisphere-shaped spherical groove which is shaped to match a position which is matched with the hemisphere-shaped spherical groove; and along a vertical direction, a distance left between the spherical groove and the spherical matching part is equal to the set pressed sinking height of the bearing plate. The sensor weighing module of the invention can satisfy weighing accuracy requirements. The sensor weighing module has the advantages of work flexibility, high fault tolerance rate, low installation precision requirement, reliable operation and further prolonged service life.
Owner:HEFEI GENERAL MACHINERY RES INST
Method and system for reading information of storage array unit
InactiveCN102420008AWill not extend the timeGuaranteed reading accuracyDigital storageComputer architecturePotential difference
The invention provides a method and a system for reading information of a storage array unit. The method comprises the following steps of: simultaneously gating a plurality of continuous bit lines comprising a bit line of a read unit, applying first reading voltage to one bit line of a read storage unit, applying second reading voltage to at least one continuous bit line which comprises the other bit line of the read storage unit, wherein the second reading voltage is higher than the first reading voltage, and applying voltage which is equal to the second reading voltage to a bit line which is adjacent to the bit line of the second reading voltage. Potential difference does not exist at two ends of each of a plurality of storage units which are adjacent to a bit line, which has high voltage, of the read storage unit, so time required by charging to the second reading voltage by the bit line of the read storage unit is not prolonged, and the reading accuracy of the read storage unit can be guaranteed.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Waterproof and dustproof apparatus of vertical plumb coordinatograph and installation method thereof
InactiveCN105222735AImprove protectionStable working environmentMeasurement devicesSlagWorking environment
The invention discloses a waterproof and dustproof apparatus of a vertical plumb coordinatograph and an installation method thereof. The apparatus comprises a box body and a cover plate, wherein the box body and the cover plate are in a full-transparent mode. The box body has a U-shaped structure and clamp grooves B are formed in the tops of the two sides. The cover plate is in an inverted-U shape and the two sides of the bottom are inserted into the clamp grooves B. A vertical cylinder that is arranged vertically is fixedly connected to the middle part inside the box body; a rectangular hole corresponding to the vertical cylinder is formed in the middle part of the top end of the cover plate; a clamp groove A matching the top end of the vertical cylinder is formed around the rectangular hole; and the top end of the vertical cylinder is inserted into the clamp groove A. According to the invention, a vertical plumb coordinatograph is fixedly installed in a sealed apparatus and thus the whole vertical plumb coordinatograph can be protected well, thereby effectively eliminating adverse factors like external moisture, dust and dropped slag stones and providing a long-term stable working environment for the vertical plumb coordinatograph.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
Manufacturing method of integral linear motion positioning system based on grating measuring technology
InactiveCN107121075AImprove wear resistanceGuaranteed reading accuracyUsing optical meansNumerical controlTectorial membrane
The invention discloses a manufacturing method of an integral linear motion positioning system based on a grating measuring technology. The method comprises the following steps: manufacturing of grating lines on a linear motion component: grinding and polishing the surface of the linear motion component, and then making a grating line structure on the surface of the linear motion component; coating of a grating line protection film: coating the surfaces of the grating lines with a layer of SiO2 protective film; manufacturing of a compact reflective grating reading head: composing a photoelectric conversion part with an LED (Light-Emitting Diode) light source and a grating sensor, and then composing a complete compact reflective grating reading head by a subdivision circuit part; assembling the grating reading head. When the integral linear motion positioning system disclosed by the invention is applied to a numerically-controlled machine tool and a measuring instrument, complex debugging loops during installation of the grating can be omitted, an Abbe error can be avoided effectively, measuring uncertainty is lowered, and the positioning and measuring accuracy of equipment is increased; the method has a wide market prospect and a high popularization and application value.
Owner:CHANGZHOU RUIFENGTE TECH CO LTD
Angle and distance testing device and method of ultrasonic probe
InactiveCN106707264AGuaranteed stabilityGuaranteed reading accuracyWave based measurement systemsEngineeringRotational stability
The invention discloses an angle and distance testing device and an angle and distance testing method of an ultrasonic probe. The angle and distance testing device comprises a transverse supporting rail, wherein a base disc which can rotate relative to the transverse supporting rail is fixed thereon, one side of the base disc is provided with an angle disc, the angle disc and a longitudinal sliding rail are arranged on the same side, a vertical sliding rail is fixed on the base disc, and the ultrasonic probe is installed on the vertical sliding rail; and the longitudinal sliding rail is fixed to one side of the transverse supporting rail, the longitudinal sliding rail is perpendicular to the transverse supporting rail or intersects with the transverse supporting rail to form a set angle, a target component used for determining a detection distance of the ultrasonic probe is arranged on the longitudinal sliding rail, and the target component is fixed on the longitudinal sliding rail in a slidable manner. The angle and distance testing device can realize the measurement of three kinds of data, is simple and feasible integrally, ensures the stability of the ultrasonic probe and the target component through cross fixation of the transverse supporting rail and the longitudinal sliding rail, ensures the rotational stability of the base disc through arranging the base disc and universal-ball bearings, and ensure the reading precision of the entire device.
Owner:康威通信技术股份有限公司
Testing device for jetting precision of jet pump
ActiveCN106151007AThe testing process is simplePrevent escapePump testingPositive-displacement liquid enginesVolume variationDifferential pressure
The invention discloses a testing device for the jetting precision of a jet pump. The testing device comprises a shell, an expansion body separator and a real-time reader. Scales are arranged on the side wall of the shell, an inner pipe stretching into the shell is arranged on the side wall of the bottom end of the shell, a liquid inlet pipe used for being connected with a jetting pipe of the jet pump is arranged on the outer side of the inner pipe, and a gas-liquid outlet and a liquid backflow port are formed in the top end of the shell. The expansion body separator is arranged at the top end of the shell and comprises a spherical outer shell and a spherical inner shell. A discharging port is formed in the outer wall of the spherical outer shell, and the spherical outer shell communicates with the liquid backflow port. The spherical inner shell is fixedly arranged in the spherical outer shell, a plurality of radial spraying pipes are arranged on the circumferential wall of the spherical inner shell and are aligned with the inner wall of the spherical outer shell, and the gas-liquid outlet penetrates the spherical outer shell and communicates with the spherical inner shell. The real-time reader is used for reading the volume variation of liquid in the shell in real time through a differential pressure sensor. The testing device can accurately detect the jetting precision under different jetting flow degrees.
Owner:GUANGXI YUCHAI MASCH CO LTD
Image reading apparatus and image forming system
An image reading apparatus includes a reader, a transmitter, an opposing part that is placed opposite to the transmitter, and a hardware processor that controls a position of the opposing part such that a gap between the transmitter and the opposing part becomes a first gap when images are read by the reader, and a gap between the transmitter and the opposing part becomes a second gap, which is wider than the first gap, when no image is read by the reader.
Owner:KONICA MINOLTA INC
Terbium-doped calcium sodium phosphate glass ceramic photostimulated luminescence material and preparation method thereof
InactiveCN109437571AConvenient to accommodateEasy to produceGlass shaping apparatusDosimeterPhosphate glass
The invention relates to a preparation method of a terbium-doped calcium sodium phosphate glass ceramic photostimulated luminescence material. The general formula of the material is 25Na2O-23CaO-6P2O5-44B2O3-2ZrO2-xTb4O7, wherein in the formula, x=0.1-1. The method comprises the following steps: sodium carbonate, calcium carbonate, ammonium dihydrogen phosphate, boron oxide, zirconium oxide and terbium oxide are taken as raw materials, mixed sufficiently and pre-sintered, obtained molten glass is quickly poured into a stainless steel mold, calcium sodium phosphate glass is prepared, ground into powder, annealed and pressed into round sheets, the round sheets are placed into a muffle furnace for heat treatment, NaCaPO4 crystals are separated out from the glass, and the terbium-doped calciumsodium phosphate glass ceramic photostimulated luminescence material is obtained. The material has good optical properties, high sensitivity and wide dose response range (0.01-1000 Gy), can be applied to personal dosimeters, environmental dosimeters, medical dosimeters and the like and is an ideal photostimulated luminescence material for detecting radiation dose.
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Control method and device for group disk array, electronic equipment and readable storage medium
InactiveCN114442930AImprove processing efficiencyReduced development effortInput/output to record carriersRAIDEngineering
The invention relates to the technical field of server production, and discloses a control method and device for a group disk array, electronic equipment and a readable storage medium. The method comprises the following steps: acquiring disk array parameters and hard disk parameters; determining target hard disk information for the group of disk arrays based on the hard disk parameters; and based on the target hard disk information and the disk array parameters, executing an operation of assembling a disk array. According to the method and the device, the scripts of the group RAID need to be written frequently, and the group RAID can be automatically formed only according to the disk array parameters and the hard disk parameters, so that the development workload of writing the scripts of the group RAID is saved, the processing efficiency of the group RAID is improved, and meanwhile, the preprocessing difficulty of the server group RAID is reduced.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
Code128 bar code automatic reading method based on global optimization
PendingCN111368576AAvoid bad influenceGuaranteed reading accuracyNatural language data processingSensing by electromagnetic radiationCharacter recognitionSingle character
The invention discloses an automatic Code128 bar code reading method based on global optimization, and relates to the field of barcode recognition, the method includes converting the probability valueinto an information entropy expression mode; therefore, the product calculation for solving the maximum probability is equivalently transformed into the summation calculation for solving the maximuminformation entropy; the method comprises the following steps of: obtaining probability values, namely information entropies, of six characters in a certain character; obtaining a character possibly corresponding to the maximum probability by adopting a global probability optimization mode; a character recognition result does not only depend on accurate recognition of each single character; secondly, correcting a result among all the characters by utilizing a code128 check rule; according to the technical scheme, the maximum total probability of the recognition result is taken as the target onthe premise that the recognition result meets the coding rule, the final decoding result does not depend on accurate recognition of each character, and the problems that bar code image imaging is damaged due to multiple factors of a bar code, and an existing bar code processing scheme has a high bar code rejection rate are solved.
Owner:CHENGDU UNIV OF INFORMATION TECH
Sequencing method for increasing reading length
InactiveCN102534040AImprove fidelityThe purpose of increasing read lengthMicrobiological testing/measurementEnzyme digestionNucleotide
The invention relates to the field of gene engineering, and provides a sequencing method for increasing reading length. The method comprises the following steps: reading less than M nucleotide sequences after the anchor extension tail end with enzyme digestion identification site by using a connection sequencing method, and identifying the enzyme digestion identification site carried by the anchor and carrying out enzyme digestion by ingeniously using the cutting endoenzyme; reserving less than N nucleotides after the anchor extension tail end; sealing the positions of the corresponding quantities of nucleotides which have been read; connecting a fluorescence probe for detection after the reserved nucleotides, and reading the information of the nucleotide sequences in the subsequent positions, thereby achieving the goal of increasing the reading length. By using the quantity of the nucleotides reserved after the controlled digestion of the cutting endoenzyme, the invention can ensure the high fidelity of the ligase, thereby ensuring the reading accuracy of the subsequent nucleotide sequence information.
Owner:盛司潼
Gate opening ruler reading method
ActiveCN113776408AHigh resolutionHigh reading accuracyImage enhancementImage analysisTarget levelComputer engineering
The invention discloses a gate opening ruler reading method, relates to the field of intelligent ruler reading, aims to solve the problems in the prior art. The gate opening ruler reading method aims to detect a target set on an opening ruler through a target detection method and obtain the accurate opening of a gate according to the position relationship among targets. According to the invention, after the preset bit set is set, the camera can rotate to each preset bit in the preset bit set and photograph, the target detection algorithm is combined with the digital image processing algorithm, only appropriate target-level manual labeling is needed, and under the condition that the target is not detected by the target detection method, the vernier target is detected again by using a digital image processing algorithm; according to the method, high precision and low omission ratio are ensured under the condition that the real-time requirement is met. Therefore, the analyzable opening degree range is greatly expanded, and the analyzable opening degree range is expanded to ten meters under the condition that the reading precision is guaranteed.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Servo signal processing system
InactiveCN107767886AFast focusingGuaranteed reading accuracyRecord information storageDisposition/mounting of headsRadio frequencyTracking error
The invention discloses a servo signal processing system, including a laser head amplifier, a radio frequency amplifier, a focus error detection device, a tracking error detection device, a multiplexer, an analog-to-digital converter, a servo DSP, a focus coil, a focus driver, a tracking coil, Tracking drive, digital-to-analog converter, feed motor, feed drive, spindle motor, three-phase spindle drive, PWM converter, the laser head amplifier, radio frequency amplifier connection, the focus error detection device, tracking error detection The devices are respectively connected with radio frequency amplifiers, the focus error detection device and the tracking error detection device are respectively connected with a multiplexer, the multiplexer is connected with an analog-to-digital converter, and the analog-to-digital converter is connected with a servo DSP. The present invention realizes the purpose of improving the focusing speed of the video disc player and ensuring the reading accuracy of the video disc player through the laser head amplifier, the radio frequency amplifier, the focus error detection device and adding feedback.
Owner:王梅
Power circuit, electronic fuse circuit, and method for providing power to electronic fuse circuit
ActiveUS20220246226A1Reduce leakageSave areaRead-only memoriesElectronic switchingHemt circuitsControl theory
A power circuit is adapted for providing a programming voltage to an electronic fuse circuit, and includes a pass transistor of a P-type metal-oxide-semiconductor transistor, a buffer circuit, and a bulk voltage control circuit. The pass transistor includes a bulk electrode, a gate electrode, a first source / drain electrode receiving a system high voltage, and a second source / drain electrode connected to a bit line. The buffer circuit provides a control voltage to the gate electrode of the pass transistor. The pass transistor is turned on during a programming operation and turned off during a reading operation. The bulk voltage control circuit independently provides a bulk voltage to the bulk electrode. A last-stage buffer of the buffer circuit is also activated by the bulk voltage to control the pass transistor during the reading operation of the electronic fuse circuit. A method for providing power to an electronic fuse circuit is also provided.
Owner:UNITED MICROELECTRONICS CORP
A smart meter with anti-interference electromagnetic current transformer that can be quickly installed and removed
ActiveCN105403744BGuaranteed reading accuracyQuick and repeated replacementTime integral measurementEngineeringSmart meter
The invention discloses an anti-interference electromagnetic-current-transformer-contained intelligent electric meter with the characteristic of rapid mounting and dismounting. A current transformer cavity is arranged inside a meter housing; and a plugging port is formed in the side of the current transformer cavity. An integrated current transformer is arranged in the current transformer cavity; leading-out terminals of wiring switches are connected with a conductor wire arranged inside the integrated current transformer and the other end of the conductor wire is connected with a relay. The integrated current transformer includes a heat-radiating shielding box; current transformer units are arranged in the heat-radiating shielding box uniformly; two wiring terminals of the current transformer units are connected fine elastic contacts connected with a reading mechanism; coarse elastic contacts are arranged at the two ends of the conductor wire; the fine elastic contacts and the coarse elastic contacts are arranged on the bottom surface of the heat-radiating shielding box uniformly; and sliding sides arranged at the two sides of the heat-radiating shielding box. With the electric meter, the interference on the electric meter reading number by an external magnetic field can be effectively prevented; the assembling speed and maintenance speed of the electric meter can be substantially improved; and the current transformer in the electric meter can be replaced and used repeatedly, so that the service life of the electric meter is prolonged.
Owner:HUAIHUA JIANNAN MACHINERY FACTORY CO LTD
A reading recognition method of a mechanical pointer pressure gauge
ActiveCN110378326BRealize automatic identificationGuaranteed reading accuracyCharacter and pattern recognitionEngineeringComputer vision
The invention discloses a reading recognition method of a mechanical pointer pressure gauge. After image filtering and binarization processing, the center coordinates of the instrument dial are obtained through two times of Hough transformation. After the contour of the dial is extracted, the contour coordinate group is carried out. Polar coordinate transformation, and then take the center coordinates of the instrument dial as the center of the circle, perform scale search and recognition, obtain the dial scale area, and perform scale calibration in the scale recognition result area, obtain the calibrated two-dimensional vector about the angle and scale, and solve the scale recognition problem Convert to a two-dimensional vector to deal with the problem, and then construct a standard scale vector to calculate the distance between the two-dimensional recognition vector of the angle and the scale and the standard scale vector. At the minimum value of the distance between the two vectors, it is the start and end positions of the standard scale. And the pointer position is obtained by obtaining the minimum value of the average gray value of the inner ring of the scale ring; the advantage is to realize the automatic identification of the reading of the mechanical pointer pressure gauge and ensure the accuracy of the reading.
Owner:HENAN BORUI FLUID EQUIP CO LTD
A level used for the construction of transmission line portal poles
ActiveCN103322875BEasy to measureEasy to storeMechanical depth measurementsMechanical clearance measurementsArchitectural engineeringMeasuring ruler
Owner:STATE GRID CORP OF CHINA +2
A sensor weighing module
ActiveCN104931121BAvoid horizontal movementAvoid over-settling problemsSpecial purpose weighing apparatusFault tolerancePlate column
The invention relates to the technical field of weighing and packaging, in particular to a sensor weighing module used in an automatic production line. The present invention includes a base, a beam sensor and a load-bearing plate. This module also includes support columns for supporting the load-bearing plate. The support columns are at least two symmetrically located at both ends of the load-bearing plate along the center line; One of the opposing surfaces of the supporting pillar and the load-bearing plate is provided with a spherical matching part, and the matching part of the other surface of the above-mentioned opposing surface is arranged with a hemispherical spherical groove that matches each other; in the vertical direction , the distance between the spherical groove and the spherical matching part is equal to the set pressure subsidence height of the bearing plate. The present invention can not only meet the requirement of weighing accuracy, but also reflect its better working flexibility and flexibility. At the same time, the fault tolerance rate is higher, the installation accuracy requirement is lower, and the working reliability and even the service life can be further improved. .
Owner:HEFEI GENERAL MACHINERY RES INST
A data processing method and device
ActiveCN106294477BGuaranteed reading accuracyRelieve stressDigital data information retrievalSpecial data processing applicationsComputer hardwareHandling stress
Disclosed are a data processing method and apparatus. A processing device reads data blocks from a read data block queue; generates confirmation objects that are in a one-to-one association relationship with the data blocks, the confirmation objects being used for recording confirmation states of the data blocks having the association relationship; and establishes a confirmation queue comprising N confirmation objects, and executes persistent operations on the read and confirmed data blocks according to the confirmation states of the confirmation objects in the confirmation queue. Accordingly, the processing device determines, according to the confirmation states of the confirmation objects in the confirmation queue and the arrangement order of the confirmation queue, a previous data block of a data block whose confirmation state is unconfirmed and that is early read by the processing device, and it is not required to perform persistent operations on each data block that is read and confirmed, thereby reducing the processing pressure of persistent services in the case in which the data read precision is ensured.
Owner:ALIBABA GRP HLDG LTD
Encoding method for batching counter
ActiveCN102306272BEliminate Critical Coding Blind SpotsConsistent luminous intensitySensing by electromagnetic radiationElectric signalComputer science
The invention relates to an encoding method of a counter and in particular relates to an encoding method for a batching counter. The encoding method for the batching counter comprises the following steps of: sequentially manufacturing 360-deree circumference of the side surface of a character wheel into a first light-permeable strip, a first light-impermeable strip, a second light-permeable stripand a second light-impermeable strip, wherein the arc included angle of the first light-permeable strip is alpha, the arc included angle of the first light-impermeable strip is beta, the arc includedangle of the second light-permeable strip is theta and the arc included angle of the second light-impermeable strip is epsilon; and rotating a circle of the character wheel of the batching counter, sequentially generating twenty groups of different 5-bit binary numeric coding electric signals by a photoelectric sensor consisting of five pairs of light emitting tubes and photosensitive receiving tubes arranged at two sides of an encoding character wheel so as to correspond to ten numbers namely '0'-'9' on the character wheel of the batching counter, wherein each number corresponds to two groups of 5-bit binary codes. According to the encoding method for the batching counter in the invention, the encoding precision can be improved and the cost can be lowered.
Owner:CHENGDU QIANJIA TECH CO LTD
An automatic interpretation method of telemetry slowly changing parameters based on statistical characteristics of historical data
ActiveCN108491439BGuaranteed reading accuracyAvoid misjudgmentVisual data miningStructured data browsingHistorical modelPotentially abnormal
The invention discloses a method for automatically interpreting slowly changing parameters of telemetry based on statistical characteristics of historical data, comprising: 1 constructing a database of historical models; 2 interpreting parameters according to; 3 unifying sampling points of valid data segments of parameter historical data to valid data of target data 4. Estimate the target data of the parameter; 5. Estimate the standard deviation of the parameter; 6. Divide the distribution of the target data into four intervals according to the estimation and standard deviation of the parameter target data: 0~1σ, 1σ~2σ, 2σ~3σ, 3σ~∞; 7 Statistical parameter target data probability distribution in each interval; 8 Potential abnormal parameter table obtained; 9 Potential abnormal parameter table obtained by artificial experts based on the above steps and obtained by analysis The auxiliary decision diagram checks the potential abnormal parameters one by one, and finally determines the abnormal parameters of telemetry during the flight. The invention overcomes the disadvantages of low manual interpretation efficiency and low data utilization rate, and saves a lot of manpower for the test process of the launch vehicle and the aircraft.
Owner:中国人民解放军63729部队
Convenient-to-detect lens module
ActiveCN113280306APlay a protective effectGuaranteed reading accuracyVehicle headlampsLighting and heating apparatusEngineeringMechanical engineering
Owner:江苏中科朗恩斯车辆科技有限公司
A kind of concrete biaxial strength measuring device and measuring method
InactiveCN108760510BGuaranteed linearityAvoid lostMaterial strength using tensile/compressive forcesStructural engineeringUltimate tensile strength
The invention discloses a concrete biaxial strength measuring device, comprising a mounting bottom plate, a metal frame, a first bracket, a first sleeve ring, a locking pin, first mounting blocks andsecond mounting blocks, wherein a plurality of balls uniformly arranged are movably connected to the inner sides of the first mounting blocks, a pressure cylinder is connected between the outer side of the first mounting block on either side and the metal frame on the same side, a first mounting plate is arranged on the inner side of each first mounting block, the inner side of each first mountingplate is fixedly connected with a pressure loading head, a second sliding rod is fixedly connected to the inner side of each second mounting block through two second brackets, a second sleeve ring movably sleeves each second sliding rod, the outer side of each second sleeve ring is connected with a second mounting plate through a steel rope, the inner side of each second mounting plate is movablyhinged to a tension loading head, and a tension cylinder is connected between the outer side of the second mounting block on either side and the metal frame on the same side. The concrete biaxial strength measuring device can overcome the deficiencies in the prior art and has more accurate tensile strength test data.
Owner:ZHENGZHOU UNIV
Data cleaning method and device for RFID access control equipment
PendingCN114238294AGuaranteed reading accuracySimple methodDigital data information retrievalSpecial data processing applicationsEmbedded systemReliability engineering
According to the invention, the phase information of the RFID tag response signals collected by the RFID access control equipment is fully utilized to analyze the phase information of the RFID tag response signals, and the phase characteristics of the RFID tags with access behaviors (the motion trails pass through the access control equipment) and the phase characteristics of the RFID tags without access behaviors are obviously different. According to the method, whether the read RFID tag has the access behavior or not is judged, tag data judged to have no access behavior are filtered out, the reading accuracy of the RFID access control equipment is guaranteed, and the method has the advantages of being simple, feasible and low in cost.
Owner:BEIJING INST OF COMP TECH & APPL
Dial image conversion method, system and equipment for pointer type measuring instrument and medium
PendingCN114018354AIntuitive Observation Feedback CapabilitiesObservation and feedback abilityCharacter and pattern recognitionVolume meteringComputer hardwareMeasuring instrument
The invention discloses a dial image conversion method and system for a pointer type measuring instrument, and the method comprises the steps: obtaining dial images of the pointer type measuring instrument at equal time intervals, enabling every S dial images to form a group, employing the same pulse equivalent for each group of dial images to calculate the corresponding pulse number and remainder, and enabling the remainder not to be abandoned, instead, the remainder being used for calculating the pulse number corresponding to the next group of images, so that the total pulse number (the sum of all the pulse numbers) is not lost when the pointer type measuring instrument performs reading detection each time, and the reading accuracy is ensured; meanwhile, the pulse numbers corresponding to the dial images in each group being slightly different, so that the frequency change is directly reflected, namely the flow change of the pointer type measuring instrument being reflected, and a tester can more intuitively observe the flow change and the feedback capability of a measured object.
Owner:HUNAN INST OF METROLOGY & TEST
A detection device for torque of dimming motor for lens module
ActiveCN113280306BPlay a protective effectGuaranteed reading accuracyVehicle headlampsLighting and heating apparatusElectric machineMotor torque
Owner:江苏中科朗恩斯车辆科技有限公司
Reference current acquisition circuit, read-only memory and electronic equipment
ActiveCN107293327BGuaranteed voltage stabilityGuaranteed reading accuracyRead-only memoriesReference currentHemt circuits
The invention discloses a reference current obtaining circuit, a read-only memory and an electronic device. The reference current obtaining circuit comprises a current mirror circuit, a switch circuit, a pull-down circuit and a pulse generation circuit, wherein the current mirror circuit is suitable for outputting a reference current according to the reference current, and comprises at least one current input branch and at least one current output branch; the at least one current input branch and the at least one current output branch are connected at a reference node; the reference current is input to the first end of the switch circuit; the second end of the switch circuit is connected with the at least one current input branch; a chip selection signal is input to the control end of the switch circuit; the chip selection signal controls the reference current to flow into the at least one current input branch; the pull-down circuit provides a discharge path to ground for the reference node; and the pulse generation circuit is suitable to control the discharge path to be switched on under the edge triggering of the chip selection signal in a preset power-on time according to the chip selection signal and to control the discharge path to be always kept switched off after the preset power-on time. The problem that the reference current provided for a sensitive amplifier in the read-only memory is instable can be solved.
Owner:SEMICON MFG INT (SHANGHAI) CORP +1
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