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157results about How to "Avoid reading errors" patented technology
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Suction nozzle inspection device
Provided is a suction nozzle inspection device which can inspect the cleaning state of a suction nozzle after cleaning. The suction nozzle inspection device has a rotary device (20), a suction nozzle holding tray (40), a suction nozzle connecting part (51), a pump, a flow detection part and a cleaning state determination part, wherein the rotary device (20) enables a rotary table (30) to rotate by a specified angle, the suction nozzle holding tray (40) is detachably arranged on the rotary table (30) and is provided with plural suction nozzle holding parts (40f) for vertically holding the suction nozzle (500) at equal intervals at the periphery, the suction nozzle connecting part (51) is arranged to move vertically and is connected and communicated with a suction nozzle hole of the suction nozzle (500), the pump supplies air to the suction nozzle connecting part (51), the flow detection part detects the flow of air supplied to the suction nozzle from the suction nozzle connecting part via the pump, and the cleaning state determination part determines the cleaning state of the suction nozzle (500) based on the flow of air detected by the flow detection part.
Owner:FUJI KK
Multifunctional stripping tool for external insulation protection layer of high-voltage cable
ActiveCN111082369AEasy to operateLabor-saving operationApparatus for removing/armouring cablesInsulation layerStructural engineering
The invention discloses a multifunctional stripping tool for an outer insulating protective layer of a high-voltage cable. The multifunctional stripping tool is used for stripping the outer insulatingprotective layer of the high-voltage cable. The tool comprises a hand wheel assembly, a cutter assembly, a disc body, clamping jaw assemblies, a check ring, a wire disc and a locking handle. The handwheel assembly, the clamping jaw assemblies, the cutter assembly, the check ring and the wire disc are installed on the disc body, and the locking handle is installed on the check ring. The three clamping jaw assemblies have a self-centering function, and the cutter assembly can set the cutting thickness according to the thickness of a cut cable insulation layer. According to the high-voltage cable outer insulation stripping device, the high-voltage cable outer insulation can be stripped more conveniently, time and labor are saved, the stripping efficiency is improved, and hands are preventedfrom being scratched or the insulation layer of a cable core is prevented from being damaged due to insufficient experience of an operator.
Owner:STATE GRID HEBEI ELECTRIC POWER CO LTD +2
Method for accessing flash memory and relevant memory device
The invention relates to a method for accessing a flash memory method. The method comprises the following steps: writing a data stream into at least one data page of at least one block of the flash memory, wherein each of the at least one data page is provided with an identification code; reading at least one identification code corresponding to the at least one data page; and determining a specific data page according to the at least one identification code, wherein the specific data page is a data page into which the data stream is finally written before the flash memory is powered off. Theinvention also relates to a memory device which comprises a flash memory and a controller. The method and device provided by the invention have the advantages that in the process of writing update data into the data pages, in case a power failure occurs, after the power supply returns to normal, the situation that the data in certain data pages is in a writing blur state does not occur in the memory device can be ensured, therefore, in the subsequent use of the data, the problem of read error of the data in the data pages can be avoided.
Owner:SILICON MOTION INC (CN)
Device for calibrating aircraft magnetic compasses
ActiveCN101532837APrecise calibration workImprove Calibration AccuracyCompassesAirplaneProcessing accuracy
The invention provides a device for calibrating aircraft magnetic compasses, which consists of a sensor component and a manual operator component, wherein the sensor component mainly acquires geomagnetic / gravitational acceleration signals; the manual operator component mainly resolves, displays and stores magnetic azimuth; and the sensor component and the manual operator component exchange data through a wireless data-transmitting module. The device has the advantages of providing a more precise magnetic north benchmark for calibrating the aircraft magnetic compasses in a digitized form, solving mechanical friction, processing precision, value-reading errors, pointer shake and other technical problems of the conventional calibration device, simplifying the process of calibrating the aircraft magnetic compasses, reducing manpower and material investment for calibration and improving the efficiency and precision of calibrating aircraft magnetic heading instruments, along with small volume, light weight and low power consumption.
Owner:SHANXI ZHIDIAN TECH CO LTD
Method for testing carbonation depth of cement-base material
ActiveCN103713023APreserve integrityEnable continuous real-time testingMaterial electrochemical variablesSpectroscopyCircuit models
The invention discloses a method for testing carbonation depth of a cement-base material. The method comprises the following steps of carrying out the impedance spectroscopy for a hardened cement material test block being carbonated in the preliminary stage to obtain an impedance spectra; fitting the impedance spectra by utilizing an electrochemical circuit model of the cement material to obtain an electrochemical parameter, and then testing the real carbonation depth of the cement material; establishing a functional relation between the electrochemical parameter and the real carbonation depth, and calculating the carbonation depth of the cement in the later period by calculating the electrochemical parameter. By adopting the method, the later-period carbonation depth of the cement can be nondestructively and accurately tested with high efficiency, and the study on the duration of the concrete structure and the rapid detection of the on-site carbonation depth can be favored.
Owner:SHENZHEN UNIV
Automatic test method and instrument for modules of sodium silicate
InactiveCN102012375AImprove the accuracy of judgmentSkip back dripping stepMaterial analysis by observing effect on chemical indicatorAutomatic test equipmentEngineering
The invention provides an automatic test method and instrument for modules of sodium silicate, so as to solve the problems that in the existing measuring method, naked eyes are adopted to judge the titration end point, the measuring precision is low, and the manual operation is adopted, back titration is required to be carried out on sodium hydroxide solution in the measuring process, and the test cycle is longer. In the invention, an electric potential signal collected by a pH electrode is adopted to replace the naked eyes to judge the titration end point, manual liquid-adding titration is replaced by accurate liquid-adding titration carried out by an accurate liquid-adding titration apparatus, a processor is adopted to control the titration process and processing data, and a magnetic force heating stirrer is adopted to heat and stir in the whole measuring process. The instrument in the invention consists of a liquid-adding titration unit, a reaction unit, a signal acquisition amplifying unit, a data processing unit and a result output unit. By utilizing the method and instrument provided by the invention, rapid and accurate measurement of modules of the sodium silicate is realized, and the labor intensity of experimenters is alleviated.
Owner:HUAZHONG UNIV OF SCI & TECH
Control methods for timer control register of display panel and display panel
ActiveCN109658887AAvoid reading errorsStatic indicating devicesDigital storageWrite protectionControl register
The invention discloses control methods for a timer control register of a display panel and the display panel. A method comprises the steps that a pulse modulation module generates a write protectionlevel and outputs the write protection level into a write protection pin of a storage chip; a sensing circuit detects a practical level value of the write protection pin; the practical level value iscompared with the write protection level, and a comparison result is sent to the timer control register; and the timer control register controls whether to read timer control register initialization configuration codes stored in the storage chip or not according to the comparison result. The sensing circuit for the write protection level is added to the pulse modulation module, and whether to switch on or switch off an inter-integrated circuit bus is decided through utilization of the sensed practical write protection level, so the condition that images are abnormal due to the fact that the timer control register codes are read wrongly is avoided.
Owner:HKC CORP LTD
Blade weight counterbalance test system of aerogenerator
ActiveCN101344422AAvoid Reading ErrorsImprove test accuracyStatic/dynamic balance measurementSpecial purpose weighing apparatusReal time acquisitionWeight value
The invention discloses a balance weight testing system of vanes of a windmill generator and comprises an electronic digital two-point crane scale, a signal cable and a computer; the electronic crane scale converts weight signals of the vanes into electric digital signals that are sent into the computer by the signal cable, the computer processes the electric digital signals and displays processed results; the computer comprises the following components: a storing module that is used for storing parametric setting values of weight, gravity center and static moment of the vanes, a mathematical model for computing the weight, gravity center and static moment of the vanes, weighing results, grouping suggestions and added weight values and parts; a data acquisition module that is used for collecting data from the signal cable in real time; a computing module that is used for computing actual weight, gravity center, static moment, added weight values and parts of the vanes; a deciding module that is used for comparing the actual weight, gravity center and static moment of the vanes with the setting values, deciding whether the vanes are qualified, and posting the grouping or the weight adding suggestions; a display module that is used for displaying the actual weight, gravity center position and static moment of the vanes, the decided results, the grouping suggestions, and the added weight value and parts.
Owner:DONGFANG TURBINE CO LTD
Diameter measurement method based on shear ruler
ActiveCN107726947ANovel ideaSimple stepsMechanical diameter measurementsUsing electrical meansProtractorAngular degrees
The invention discloses a diameter measurement method based on a shear ruler. In the method, diameter measurement is achieved through the shear ruler (1), a straight ruler and a protractor (4); the first end of the straight ruler is connected with the hinging point A of the shear ruler, and the second end of the straight ruler is used for making contact with the surface of a measured object whichis cylindrical. The method includes the measurement steps that 1, the shear ruler is opened, wherein the opening direction is perpendicular to the axial direction of the measured object; 2, the secondend of the straight ruler is made to abut against the surface of the measured object, and the two arms of the opened shear ruler are made to clamp the measured object; 3, data is read, wherein the read data includes angle data measured by the protractor; 4, the diameter is calculated, wherein the diameter phi of the measured object is obtained through calculation based on the length of the straight ruler and the opening angle of the straight ruler measured by the protractor. The diameter measurement method based on the shear ruler is ingenious in concept, easy to implement and capable of achieving automatic diameter measurement.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
High-precision swinging friction coefficient measuring apparatus
InactiveCN101587058ARealize digital measurementHigh precision requirementsUsing mechanical meansMaterial analysisEngineeringData collecting
The invention provides a high-precision swinging friction coefficient measuring apparatus; a swinging rod is mounted on swinging axle of a bracket; a rotor is mounted on the end of the swinging rod; a friction film is provided at the bottom of the rotor; a friction test block is arranged at the vertical lower portion of the swinging axle; the apparatus is characterized in that: a, angle encoder coupled with the swinging axle is disposed at the position of the swinging axle; a force sensor is provided at the lower portion of the friction test block; the measuring data of the angle encoder and the force sensor are transmitted to the data collecting and processing device. The device of the invention utilizes the signals of the force sensor and the angle encoder to measure and calibrate the friction coefficient of the friction test block, which can solve the measurement tracing problem of the friction coefficient and has advantages of simple structure, high accuracy and good stability, etc.
Owner:BEIJING CHANGCHENG METERING TEST TECH INST NO 1 GRP CO CHINA AVIATION IND
Dynamic adsorption-type toxic gas detection device
InactiveCN103175763AThe detection basis is stableThe test result is accuratePermeability/surface area analysisAbsorption filterElectron
The invention discloses a dynamic adsorption toxic gas detection device. According to the invention, compressed air is delivered into one of the gas inlets of a gas mixer through an air purifier, a gas humidity regulator, an electronic thermometer / hygrometer, and a gas flowmeter; an outlet of a toxic gas source communicates with a second one of the gas inlets of the gas mixer. The gas outlet of the gas mixer communicates with a gas inlet of a toxic gas concentration detector and a gas inlet of a toxic gas absorption filter. The outlet of the toxic gas absorption filter is connected with a penetration concentration detector. The gas humidity regulator, the electronic thermometer / hygrometer, and the gas flowmeter form an air flow rate and air humidity regulation circuit. The toxic gas concentration detector, the toxic gas absorption filter, and the penetration concentration detector form a dynamic absorption and toxic gas detection circuit. The device provided by the invention has the advantages of simple structure, convenient operation, and precise detection data. With a waste absorption device, pollution to the atmosphere and harm to operators caused by residual toxic gas are avoided.
Owner:广州市高坚劳保用品有限公司
Retractable infrared image acquisition instrument
ActiveCN106713863AEasy to watchAvoid unexpected situationsNon-electrical signal transmission systemsClosed circuit television systemsUniversal jointComputer science
The present invention provides a retractable infrared image acquisition instrument. The retractable infrared image acquisition instrument comprises an image acquisition device, a retractable supporting device and a terminal fixing support; the image acquisition device is fixed at the top end of the retractable supporting device through a universal tube; the terminal fixing support is fixed to the lower end of the retractable supporting device through a universal joint; the image acquisition device includes a shell, a camera mounted within the shell, an LED light compensating lamp, an infrared emitter and an infrared receiver, wherein the LED light compensating lamp, the infrared emitter and the infrared receiver are mounted below the camera; the retractable supporting device comprises a retractable insulating rod and an insulating battery cabin; the top of the insulating battery cabin is connected with the bottom of the shell through the universal tube; the lower end of the retractable insulating rod is provided with a fixing ring; the fixing ring is provided with a fixing clamping position; and the terminal fixing support is fixed onto the fixing clamping position through the universal joint. The retractable infrared image acquisition instrument of the invention is convenient to carry and is simple to operate. With the retractable infrared image acquisition instrument of the invention adopted, power outage is not required, a user does not need to carry a heavy ladder and can read a meter and take pictures without climbing to a high place. According to the retractable infrared image acquisition instrument, data are transmitted wirelessly, so that work efficiency can be improved.
Owner:广州市华蓝佳声计算机科技有限公司
Flowmeter verification device and verification method thereof
InactiveCN107843315AChange won't happenTest results are not affected by temperatureTesting/calibration apparatusSynchronous motorLiquid storage tank
Provided are a flowmeter verification device and a verification method thereof. The device comprises a volume pipe I31, a volume pipe II29, a working piston I and a working piston II which are arranged in the volume pipe I and the volume pipe II, a synchronous motor I and a synchronous motor II which are connected with the working piston I and the working piston II, a photoelectric sensor I and aphotoelectric sensor II which are installed on the volume pipe I, a liquid storage tank 25 connected with the volume pipe II, a data collection unit 40, a computer and the like, a flowmeter to be verified is installed at the two ends of the volume pipe I and the volume pipe II, liquid which is the same as liquid flowing through the flowmeter actually is injected into the volume pipe I, the synchronous motor I and the synchronous motor II drive the working piston I and the working piston II to work to trigger the photoelectric sensor I and the photoelectric sensor II, time for the liquid to flow through the flowmeter to be verified is read, then the liquid is discharged into the liquid storage tank so that the volume of the liquid which flows through the flowmeter to be verified can be measured, the normal flow which flows through the flowmeter to be verified is calculated, according to readout data of the flowmeter to be verified, a readout error is calculated, and according to the error, whether or not the flowmeter is qualified is judged. According to the device and the method, measurement is convenient, and the data is accurate.
Owner:李盛
Solid state disk error correction method and related device
PendingCN109992446AFix read errorAvoid reading errorsDigital storageRedundant data error correctionVoltage referenceTransfer operation
The invention discloses a solid state disk error correction method, which comprises the following steps: reading state information of a data block, and calculating data writing duration according to the state information; when the data writing duration is greater than a first preset duration, carrying out data transfer operation on the data block; when the data writing time length is smaller thanor equal to the first preset time length and larger than the second preset time length, determining the optimal voltage offset according to the result of the analog reading operation, modifying the reference voltage of the reading operation is modified according to the optimal voltage offset, and therefore when the data of the data block is read, carrying out reading operation according to the optimal voltage offset. The reference voltage of the reading operation is modified through the simulated optimal voltage offset, so that the reading error occurring when the data is read is corrected, the excessive use of the data transfer operation is avoided. The consumption of the system performance is reduced, and the performance utilization rate is improved. The invention further discloses a solid state disk error correction device, a storage device and a computer readable storage medium which have the above beneficial effects.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
Measurement method for crystal material crystal direction
InactiveCN103234991AAvoid Reading ErrorsAnalysing solids using sonic/ultrasonic/infrasonic wavesMaterial analysis using radiation diffractionPhysicsSurface scanning
The present invention provides an X-ray detection method for crystal direction deviation of a crystal or a crystal direction of a crystal rod processing crystal surface. According to the present invention, the adopted measurement method is: carrying out crystal direction scanning on a crystal surface, finding a crystal position angle under a peak through a surface scanning curve, and measuring angle deviation of the crystal direction at the position angle through a trough position angle; and the crystal direction can be accurately corrected with one scanning and two braking rotations.
Owner:HEFEI JINGQIAO PHOTOELECTRIC MATERIAL
Trapped charge capture type flash memory array structure and operation method thereof
ActiveCN102509727AReduce power consumptionIncrease erasing speedSolid-state devicesRead-only memoriesArray data structureMemory array
The invention provides a trapped charge capture type flash memory array structure, which comprises a substrate and a two-dimension memory array structure formed on the substrate, wherein the two-dimension memory array structure comprises a plurality of storage unit arrays in parallel arrangement in the first direction, a plurality of character lines in parallel arrangement in the second direction, a source line in the second direction and a plurality of position lines in parallel arrangement in the first direction, each storage unit array comprises a plurality of storage units, each storage unit is a silicon-oxidation layer-silicon nitride-oxidation layer-silicon type (SONOS) memory, and the adjacent storage units are mutually isolated; the character lines are connected with a grid electrode layer of the storage units; the source line connects the source ends of all storage units; and the position lines are connected with drain ends of the storage units. The array structure is applied to independent NOR FLASH, a peripheral circuit can be simplified, the erasing speed can be accelerated, the embedded NOR FLASH is adopted, the electricity leakage and reading error problems caused by erasing can be avoided, the circuit power consumption is reduced, and simultaneously, the storage density is improved.
Owner:TSINGHUA UNIV
Book point reading method and system based on deep learning
PendingCN111353501AImprove scalabilityAvoid Reading ErrorsCharacter and pattern recognitionNeural architecturesText recognitionText detection
The invention discloses a book point reading method and system based on deep learning, and the method comprises the steps: enabling an obtained finger point reading image photographed by an image collection device to be inputted into a finger detection model and a text detection model at the same time, and respectively detecting the fingertip position and all text regions in the image; conductingaffine transformation and cutting on the character area according to the detected fingertip position and the detected character area; inputting the cut character area into a character recognition model to recognize character information; carrying out sentence segmentation or segmentation processing on the text information by utilizing punctuation or segmentation character information; and outputting individual characters, words, sentences or text segments by voice according to a preset click-to-read demand. Finger point reading images are shot through the image acquisition device, so that theexpansibility of point reading content is improved; the finger detection model, the text detection model and the text recognition model are trained, point reading of single Chinese characters, words,sentences and text segments is achieved, a traditional point reading detection and recognition method is simplified, and the accuracy of character detection and recognition is improved.
Owner:暗物智能科技(广州)有限公司
Pointer type instrument calibration method, system and device thereof
ActiveCN105021220AAvoid Reading ErrorsImprove accuracyInstrumentsMeasuring instrumentComputer science
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
Clock device based on timestamp and counters and achieving method thereof
InactiveCN105717979AImprove real-time performanceAvoid Reading ErrorsGenerating/distributing signalsTimestampNanosecond
The invention discloses a clock device based on a timestamp and counters and an achieving method thereof.The clock device comprises the first counter and the second counter which are sequentially connected.The first counter serves as a prescaler of the second counter, and each counting period of the first counter can produce a carry signal for the second counter to drive the second counter to add one.After each counting period is finished, the first counter automatically reloads and begins the next counting period.The clock device has the advantages that the pure hardware clock can achieve very high clock precision (millisecond, microsecond and nanosecond), and the system time reading method can prevent reading errors caused by critical problems so that reading can be more reliable and high in timeliness; the timestamp is set to be in year 2,000, calculation can be simplified, and the time expression range can be enlarged; the RTC function can be achieved on a hardware platform without RTC.
Owner:STATE GRID INTELLIGENCE TECH CO LTD
Contact type living body skeleton distance measuring device
InactiveCN103598887AControllable contact pressureConstant compressionDiagnostic recording/measuringSensorsBiological bodyContact pressure
A contact type living body skeleton distance measuring device is characterized by comprising a fixed contact (2) and a test contact (13) which can move on a slide rail. The test contact (13) is driven by a screw rod to move on the slide rail directly or through a connecting device. The screw rod and the slide rail are assembled on a fixed frame (7). One end of the screw rod is axially connected with a drive shaft of a drive device through an electromagnetic clutch (9). The test contact (13) is connected with a distance measuring device body directly or through the connecting device. According to the contact type living body skeleton distance measuring device, the current value of the electromagnetic clutch is monitored and controlled, so that the contact pressure between the test contact and the skin is controllable, the amount of compression of the skin is constant, different measurement person-time results are comparable, and it can be guaranteed that the root bone portion is not subjected to excessive pressure.
Owner:北京华健恒创技术有限公司 +1
Erase scheme for non-volatile memory
InactiveCN1449024AAvoid reading errorsImprove short channel effectTransistorOrganic active ingredientsComputer scienceElectron
The present invention relates to the erasing method of non-volatile memory unit. The non-volatile memory unit has substrate, the first source / drain, the second source / drain, channel region between the first source / drain and the second source / drain, grid on the channel region, and non-conductive charge trap material between the first insulating layer and the second insulating layer and between the grid and the channel region. The erasing method of the non-volatile memory unit includes the following steps: executing hot hole erasing program of implanting hot holes to non-conductive charge trap material to remove the first electron stored therein while partial holes existing in the second insulating layer; and subsequent executing mending program to remove the holes existing in the second insulating layer.
Owner:MACRONIX INT CO LTD
Method and system for managing memory
ActiveCN103677966AAvoid reading errorsLow costMultiprogramming arrangementsOperating temperature rangeWorking temperature
The invention relates to a method and system for managing a memory. The method for managing the memory comprises the following steps that the temperature value of the environment where the memory is located is monitored; whether the temperature value is smaller than a preset lowest work temperature or larger than a preset highest work temperature or not is judged, and if yes, the refreshing frequency of the memory is adjusted to refreshing frequency corresponding to the temperature value. According to the method and system for managing the memory, when the monitored temperature value is smaller than the lowest work temperature, the refreshing frequency of the memory is adjusted to the refreshing frequency corresponding to the temperature value, the data of the memory can be read before the data in the memory decrease below a threshold voltage, reading errors are avoided, and when the environment temperature is lower than the lowest work temperature or higher than the highest work temperature, an additional heating circuit does not need to be designed to heat the memory at low temperature, or the memory does not need to be cooled at high temperature, an expensive memory does not need to be selected to adapt to the low temperature environment and the high temperature environment, cost is lowered, and the work temperature range of the memory is widened.
Owner:广东省工业边缘智能创新中心有限公司
Voltage control method and device during erasing of 3D NAND memory
ActiveCN110993009AAvoid reading errorsReduce voltage differenceRead-only memoriesMemory cellControl theory
The invention provides a voltage control method during erasing of a 3D NAND memory. When the bias voltage of the word line of the true memory cell is at the erase control voltage; raising the bias voltage of the well doped region to an erase working voltage and keeping the erase working voltage; when the bias voltage of the well doped region rises to a first intermediate voltage, the well doped region is grounded; keeping the bias voltage of the word line of the pseudo memory cell at a first preset voltage, then, setting a word line of the pseudo memory unit to be in a floating state; whereinthe first preset voltage is smaller than the first intermediate voltage; thus, the voltage difference between the voltage of the word line where the pseudo memory cell is located and the voltage of the word line where the adjacent true memory cell is located is reduced; tunneling between the word line where the true memory unit is located and the word line where the pseudo memory unit is located is avoided, so that threshold voltage drift of the pseudo memory unit is avoided, reduction of string current of the memory unit is avoided, and reading errors of the true memory unit are avoided.
Owner:YANGTZE MEMORY TECH CO LTD
Reading device
InactiveCN103389365AImprove detection efficiencyAvoid reading errorsColor/spectral properties measurementsBiological testingComputer hardwareMedicine
The invention relates to a reading device for reading detection results, and particularly relates to a reading device for reading detection results on a test strip. The device comprises an image-acquiring element for acquiring images of at least two windows on the test strip, a computing element and a transmitting element, wherein the transmitting element transmits the acquired images to the corresponding computing element; and the computing element transforms image information into array values and analyzes the array values to distinguish each window on the test strip. The reading device can identify specific information in every window region and every area of the test strip with image identification, so that a detection device matching with the reading device can effectively identify product types detected by the test strip; and the detection device can read detection results of a plurality of test strips for detecting different products, thereby greatly reducing cost.
Owner:ABON BIOPHARM HANGZHOU
Micro centrifuge
The invention relates to the field of laboratory equipment, in particular to a micro centrifuge. The micro centrifuge includes a rotating shaft and a motor for driving the rotating shaft to rotate, wherein a turntable is fixedly connected with the rotating shaft; the turntable is fixedly connected with the middle of the rotating shaft; a rotating test tube is arranged on the turntable; the upper side and the lower side of the turntable are correspondingly provided with a first magnet and a second magnet that are connected with the rotating shaft in a thread mode; the first magnet and the second magnet move in opposite directions; reset members are connected with the first magnet and the second magnet; a first magnetic strip and a second magnetic strip are correspondingly arranged on the upper end and the lower end of the test tube; the first magnet and the first magnetic strip are attracted to each other; and the second magnet and the second magnetic strip repel each other. According to the micro centrifuge, it is convenient for medical staff to read the scale on the test tube, so that reading errors are reduced.
Owner:THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
Visual simulation apparatus and method for migration of solid phase and liquid phase of mining overburden rock
ActiveCN105527401AEliminate vibrationEliminate damaging effectsEarth material testingContinuous monitoringWater layer
The invention discloses a visual simulation apparatus and method for migration of a solid phase and a liquid phase of mining overburden rock. The visual simulation apparatus and method are especially applicable to simulation and reproduction of dynamic changing processes of opening and closing of mining gaps of upper confining beds and flow field evolution during water-preserved mining of a mine. An experimental system used in the invention comprises the following five parts: a model support, a water injection device (2), an automatic mining control system, a water level continuous monitoring system and a visual system. The method provided by the invention comprises the following steps: 1) laying an experimental model; 2) simulating underground water; 3) injecting water into the model; 4) simulating excavation process; 5) recording and analyzing changes of the water level in the model in real time in virtue of the water level continuous monitoring system; and 6) observing experimental phenomena by using the visual system. The visual simulation apparatus provided by the invention has a compact structure and good experiment maneuverability; and a novel approach is provided for visualization of simulation of overburden rock gaps and underground water flow field evolution during mining of underground layered mineral resources.
Owner:CHINA UNIV OF MINING & TECH
Absolute encoder, motor control method and related assemblies
InactiveCN108759878AAvoid Reading ErrorsImprove measurement accuracyElectric motor controlConverting sensor output opticallyCouplingMotor control
The application discloses an absolute encoder comprising an encoding roller connected with a measured mechanical rotating shaft by a coupler, an image collector, and an angle identification device. Acode way for indicating the rotation angle of the encoding roller is engraved in the outer side wall of the encoding roller. The image collector collects the outer side wall image of the encoding roller through an encoder slit, wherein the encoder slit is parallel to the axis of the encoding roller. The angle identification device connected with the image collector is used for determining the rotation angle of a measured mechanical rotating shaft based on the outer side wall image. With the absolute encoder, the reading error caused by the radial runout of the encoder during the measuring process is avoided; and the measuring accuracy of the encoder is improved. In addition, the application also discloses a motor control method, a computer-readable storage medium and a motor control devicethat have the same beneficial effects as the absolute encoder.
Owner:GUANGDONG UNIV OF TECH
Disc type part numerical control turning processing dimension on-line measurement device
ActiveCN104308661AReasonable structural designAvoid measurement errorsMeasurement/indication equipmentsMeasurement deviceDimension measurement
The invention relates to a disc type part numerical control turning processing dimension on-line measurement device, and belongs to the technical field of a numerical control processing tool structure. The on-line measurement device comprises a sensing measuring head, a signal collection wireless emitting module and a wireless receiving data processing module, wherein the sensing measuring head is used for carrying out dimension measurement on disc type parts, the signal collection wireless emitting module is used for collecting and emitting data measured by the sensing measuring head, and the wireless receiving data processing module is used for receiving data. The on-line measurement device provided by the invention has the advantages that the structure design is reasonable, the dimension measurement can be automatically completed on a machine tool, in addition, the measured data can be sent to a numerical control system, the work efficiency can be improved, and meanwhile, the measurement precision can be effectively improved.
Owner:烟台拓伟智能科技股份有限公司
Message data transmission method, bridging module, read module and message data transmission system for peripheral component interconnect express (PCIe) interfaces
The application discloses a message data transmission method, a bridging module, a read module and a message data transmission system for peripheral component interconnect express (PCIe) interfaces, wherein the method comprises the following steps of: setting corresponding pointer spaces in a central processing unit (CPU) memory in a bridging module terminal for every PCIe interface; and writing write pointers into the pointer spaces corresponding to every PCIe interface through every PCIe interface. According to the application, because the pointers in every pointer space are the same until the message data are written into a cache block of the CPU memory through the PCIe interfaces and a descriptor package is written into a receive queue of the CPU through the PCIe interfaces, the mode of reading the pointers to acquire the message data only when the pointers in every pointer space are the same can be used to effectively avoid message data read errors caused by the fact that the writing of the pointers is earlier than the two steps because of different time delays of different PCIe interfaces when the bridging module supports multi-path PCIe interface data transmission.
Owner:XFUSION DIGITAL TECH CO LTD
Storage performance test method, device and equipment and readable storage medium
InactiveCN110046069AImprove efficiencyReduce work stressFunctional testingSoftware engineeringWork pressure
The invention discloses a storage performance test method which comprises the steps of obtaining a target volume, reading a storage definition SD item and a volume identification lun item of the target volume, modifying an initial configuration file according to the storage definition SD item and the volume identification lun item to obtain a test configuration file; calling the Vdbench software to execute the test on the target volume according to the test configuration file, so that the storage performance is automatically tested by using the Vdbench software, the manual configuration and manual test starting of a tester are not needed, the reading errors and writing errors caused by the manual configuration are avoided, the storage performance testing efficiency is improved, and the working pressure of the tester is reduced. The invention further discloses a storage performance testing device and equipment and a readable storage medium which have the above beneficial effects.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
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