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45results about How to "Solve the attenuation problem" patented technology
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Wireless and ultrasonic composite location system and location method for wireless and ultrasonic composite location system
ActiveCN105116378ASolve the attenuation problemRealize Ultrasonic InspectionPosition fixationWireless commuication servicesFixed positionMeasurement precision
The invention provides a wireless and ultrasonic composite location system and a location method for the wireless and ultrasonic composite location system, wherein the wireless and ultrasonic composite location system comprises a plurality of beacon modules with fixed positions, at least one mobile location module and an electronic location platform; each of the beacon modules comprises a first wireless receiving and sending module, an ultrasonic transmitting module and a first intelligent processing module; the mobile location module is arranged on a mobile object, and comprises a second wireless receiving and sending module, an ultrasonic receiving array, an array processing module and a central processer; the electronic location platform is used for building an electronic map and sending the electronic map to the mobile location module, and is also used for coordinating the synchronization of the beacon modules and the mobile location module. The invention also comprises the location method for the wireless and ultrasonic composite location system. By adopting the system and the method, the problems of multipath effect and none-line-of-sight are solved, the measurement precision is improved, and the theoretical precision of less than 0.1mm can be reached.
Owner:长沙开山斧智能科技有限公司
Robot location navigation system and navigation method
ActiveCN105115498ASolve the attenuation problemRealize Ultrasonic InspectionNavigation instrumentsSimulationNavigation system
The invention relates to a robot location navigation system and navigation method. The robot location navigation system comprises a plurality of beacon modules, at least one robot location terminal and an electronic navigation platform; each beacon module comprises a first wireless receiving-transmitting module, an ultrasonic transmitting module and a first intelligent processing module; each robot location terminal comprises a second wireless receiving-transmitting module, an ultrasonic receiving array, an array processing module and a central processor; the electronic navigation platform is used for storing codes of all robots, establishing an electronic map, planning and calculating a motion target or path of the robot as well a position of the beacon module and dispatching the robot to avoid a barrier and also used for coordinating the synchronism of the beacon module and the robot location terminal and receiving position coordinate data uploaded by each robot location terminal. The invention also relates to a navigation method of the robot location navigation system. By adopting the robot location navigation system and navigation method, the multi-path effect and non-line-of-sight propagation problem can be solved, the measurement precision can be improved, and automatic location is implemented.
Owner:长沙开山斧智能科技有限公司
Emotion feature representation learning system and method based on global interaction and syntax dependence
ActiveCN111488734ASolve the attenuation problemSolve the problem of insufficient interactionSemantic analysisNeural architecturesSyntaxLanguage model
The invention discloses an emotion feature representation learning system and method based on global interaction and syntactic dependence. The emotion feature representation learning method comprisesthe steps: through the information interaction of contexts and evaluation objects, introduction of a word syntactic dependence relationship and feature joint learning, employing a pre-trained multi-layer language model for carrying out embedded representation on the words, and obtaining more contextualized representation of the words; solving the problem of insufficient interaction caused by independent modeling of contexts and evaluation objects in a previous method by utilizing a superior lifetime double-sentence task mode of a BERT structure. According to the method, a graph dependence attention network is provided, the problem that the graph dependence attention network does not distinguish influences of different dependence relations is solved; meanwhile, the syntactic relation of comments is reasonably modeled into a model, and words are made to represent syntactic dependence information; according to the method, a feature joint learning method is used, interaction information and syntax dependence information of comments are fully combined, and therefore the accuracy of emotion analysis of the evaluation object is improved.
Owner:XI AN JIAOTONG UNIV
Mobile robot positioning and mapping method
ActiveCN110007670AHigh positioning accuracySolve the problem of inaccurate positioning caused by large odometer errorsInstruments for road network navigationElectromagnetic wave reradiationImage resolutionComputer graphics (images)
The invention discloses a mobile robot positioning and mapping method, and relates to the technical field of robot positioning. The mobile robot positioning and mapping method comprises the steps of initializing the position of a mobile robot and a raster map of each resolution; estimating the possibility that the tail ends of laser beams in each raster map is occupied; iteratively solving the position change data, in the raster map with the lowest resolution, of the mobile robot from the last moment to the current moment; initializing a particle set; updating the position of the mobile robotin each particle; selecting a target particle and expanding the particle set; scanning the matching degrees between the particles in the particle set and the corresponding raster maps; calculating theweights of the particles in the expanded particle set; updating the corresponding maps according to the positions of the robot in the expanded particle set; selecting standby particles; and updatingthe raster map with the lowest resolution. The mobile robot positioning and mapping method is capable of solving the problem that the traditional particle filter-based SLAM systems are relatively large in positioning error and inaccurate in map due to wheeled speedometer errors.
Owner:SICHUAN ARTIGENT ROBOTICS EQUIP
Array substrate, touch control display device and driving method thereof
ActiveCN105159507ASolve the attenuation problemHigh strengthStatic indicating devicesNon-linear opticsUltrasound attenuationShift register
The invention provides an array substrate, a touch control display device and a driving method thereof. The array substrate comprises a grid drive circuit and a touch control drive circuit arranged in a non-display area. The touch control drive circuit comprises multiple stages of touch control selection output units. Each stage of touch control selection output unit comprises two gating signal input ends, and secondary triggering signal output ends of two adjacent shifting registers in the grid drive circuit provide gating signals. The array substrate provides a simplified touch control drive circuit, thereby being easy to realize design of a narrow frame, reducing signal input ends and lowering IC cost. All touch control drive electrodes can be scanned once in each half frame, so that two times of frame frequency of point report rate is realized. The two stage of touch control selection output unit can simultaneously provide touch control signals at two ends of each touch control drive electrode, thereby effectively preventing driving signal attenuation caused by driving signal provision by a single side, and enhancing the intensity of the driving signal.
Owner:XIAMEN TIANMA MICRO ELECTRONICS +1
Photovoltaic inverter system and PID effect compensation method and apparatus thereof
ActiveCN106505626AAchieving Compensation RestorationSolve the attenuation problemPhotovoltaic monitoringPV power plantsPotential induced degradationUltrasound attenuation
The invention provides a photovoltaic inverter system and a potential-induced-degradation (PID) effect compensation method and apparatus thereof. A processing control unit records operation conditions of all photovoltaic assemblies and determines a PID effect compensation condition and thus carries out optimized calculation of a compensation voltage, thereby controlling an integrated PID compensation unit to carry out PID effect compensation on the photovoltaic assemblies and thus realizing PID effect compensation repairing. Therefore, a photovoltaic assembly attenuation problem in the photovoltaic power station can be solved effectively and the generating capacity of the system can be improved. Compared with the prior art, the system, method and apparatus provided by the invention enables the practical operation reliability to be improved and the maintenance cost to be reduced.
Owner:SUNGROW POWER SUPPLY CO LTD
Aqueous electrolyte for improving reversibility of neutral zinc-manganese battery and preparation method of aqueous electrolyte
PendingCN112086694AThe preparation method is safeEasy to prepareSecondary cellsAqueous electrolytesElectrolytic agentElectrical battery
The invention relates to an aqueous electrolyte for improving reversibility of a neutral zinc-manganese battery and a preparation method of the aqueous electrolyte, and the preparation method comprises the following steps: 1, preparing an inorganic zinc salt basic electrolyte: dissolving inorganic zinc salt in water, and stirring at room temperature to obtain the inorganic zinc salt basic electrolyte with a certain concentration; and 2, adding a certain amount of organic complexing agent according to the complexing molar ratio, and stirring at room temperature; according to the invention, thebeneficial effects are that the electrolyte wherein the positive electrode and the negative electrode are in direct contact is designed, the attenuation problem of the negative electrode and the positive electrode is solved, the stability of the current zinc-manganese battery based on the neutral aqueous electrolyte is improved, and the purpose of improving the reversibility of the neutral zinc battery is achieved. According to the electrolyte, the organic component is introduced, the electrolyte maintains the high safety characteristic of the original aqueous electrolyte, the introduced organic component is environmentally friendly and low in cost, and the electrolyte is suitable for any battery system based on a zinc metal or zinc alloy negative electrode and batched and large-scale battery preparation and production.
Owner:浙江浙能中科储能科技有限公司 +1
Chip for signal amplifier of radio frequency recognition system and signal amplifier thereof
InactiveCN101303744AEnhanced response signalRealize non-contact proximity radio frequency identificationMemory record carrier reading problemsRecord carriers used with machinesComputer hardwareCarrier signal
The invention discloses a chip of a signal enhancer used for a RF identifying system; the chip of the signal enhancer includes a receiving circuit, a transmitting circuit and a power module; the receiving circuit includes a filter, a demodulation amplifying module and a digital quantification module. The transmitting circuit includes a logic control module and a demodulation module. The signal transmitted to the signal enhancer by a double interface SIM card is received by the input end of the filter; the output end of the filter is connected with the input end of the demodulation amplifying module and then is output to the input end of the digital quantification module and then is output to the input end of the logic control module. The logic control module outputs the signal to the input end of the demodulation module. The demodulation module generates a subcarrier which reflects and demodulates the signal and returns the signals to a reader. The signal enhancer effectively solves the problem of signal attenuation by utilizing each module inside the chip of the signal enhancer and realizes the non-contact close-distance RF identification on a mobile phone under the situations of not changing the movable communication terminals like the existing RFID reader and the mobile phones.
Owner:SHANGHAI QUANRAY ELECTRONICS
Roller-way-type solar cell irradiation annealing furnace
InactiveCN104795469ASolve the attenuation problemReduce energy consumptionFinal product manufactureSemiconductor/solid-state device manufacturingUltrasound attenuationMetallurgy
The invention relates to a roller-way-type solar cell irradiation annealing furnace which can be used for irradiation annealing treatment of solar cells. In the irradiation annealing furnace, cell pieces are transmitted on a group of horizontally-arranged roller ways, light sources and a heating device are arranged above and below the roller ways respectively or below and above the roller ways respectively, and the fronts face the light sources while the backs face the heating device when the cell pieces are transmitted. The cell pieces after being sintered are continuously transmitted through the roller ways, and irradiation annealing treatment is completed continuously in the process of horizontal advancing, so that the roller-way-type solar cell irradiation annealing furnace has the advantages of low energy consumption, stability in running, high capacity and continuous production, and the problem of attenuation in the process of using solar cells can be solved to greatest extent after the furnace is popularized and utilized.
Owner:BEIJING SOLARRAY TECHNOIOGY CO LTD +1
Mechanical adherent flexible coupling probe for geological detection
PendingCN105549073AAchieve interference fitSolve the attenuation problemSeismic signal receiversInterference fitCoupling
The invention discloses a mechanical adherent flexible coupling probe for geological detection. The probe comprises a sleeve and an oscillating wave sensor mounted in the sleeve. The problem is characterized in that the front end of the sleeve is provided with an axially flexible mechanical limiting head, and a prime mechanism is mounted in a cavity in the middle of the sleeve, and connected with a radial expansion mechanism. After being driven by a prime force, the prime mechanism drives the radial expansion mechanism to expand outwardly from the sidewall of the sleeve. The mechanical adherent flexible coupling probe for geological detection has the advantages that installation is convenient, recovery is easy, the manner by using button as couplant is replaced, long-term interference fit between the probe and a hole wall is ensured, and the signal transmission effect is ensured.
Owner:CHONGQING CUILU DETECTION TECH CO LTD
Salt-cavern gas storage gas-liquid interface measurement method and system based on low-frequency electric signal
ActiveCN113358188ALess distracting to useExtended service lifeLevel indicators by physical variable measurementSaline waterVoltage
The invention relates to a salt-cavern gas storage gas-liquid interface measurement method and system based on a low-frequency electric signal. The method comprises the steps of: applying a low-frequency current signal to a central tube by an excitation source; measuring the voltage of a central pipe below the insulating short section, and calculating the impedance Z lower at the lower end of the insulating short section according to the low-frequency current signal<lower>; according to the definition of the low-frequency current signal, the voltage of the central pipe below the insulation short section and the impedance Z<lower> of the lower end of the insulation short section, determining a calculation equation of the distance H between the insulation short section and a gas-liquid interface; and calculating the distance H between the insulating short section and the gas-liquid interface according to the impedance Z<lower> at the lower end of the insulating short section and the calculation equation. Measurement of a salt-cavern gas storage gas-liquid interface is realized by utilizing the property that the characteristic impedance of the central tube is far greater than that of saline water, and the gas-liquid interface is not prone to be influenced by an oil pollution environment and sound wave propagation attenuation; and the measuring system provided by the invention has recoverability, has small interference on the use of the salt-cavern gas storage, has good working stability, and effectively reduces the replacement frequency of underground equipment.
Owner:HUAZHONG UNIV OF SCI & TECH
Salt-cavern gas storage liquid level measuring system and method based on Poynting vector detection
ActiveCN113237532ASolve the attenuation problemAvoid problems that are susceptible to interferenceMachines/enginesLevel indicatorsElectrical field strengthLiquid level measurement
The invention relates to a salt-cavern gas storage liquid level measuring system and method based on Poynting vector detection. The system comprises a central pipe, an electromagnetic signal transmitting device, electric field measuring devices, a magnetic field measuring device and a ground host. The central pipe is inserted into a salt-cavern gas storage from a wellhead; the electromagnetic signal transmitting device is arranged on the central pipe; the two electric field measuring devices are respectively arranged on the upper side and the lower side of the electromagnetic signal transmitting device; and the magnetic field measuring device is arranged below the lower electric field measuring device. The electromagnetic signal transmitting device excites an electric field and a magnetic field in a space, and the electric field measuring devices and the magnetic field measuring device measure the electric field and the magnetic field in the space. The ground host calculates the distance between the liquid level and the electromagnetic signal transmitting device through the measured electric field intensity and magnetic field intensity. The scheme can adapt to the severe environment in the gas storage, and the gas-liquid interface height in the gas storage can be accurately measured.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Organic light-emitting electronic device packaging structure and production process thereof
InactiveCN110246981ALight attenuation is smallReduce the effect of light attenuationSolid-state devicesSemiconductor/solid-state device manufacturingLight reflectionOxygen
The design of a metal insertion layer is added in an organic light-emitting electronic device packaging layer, by the packaging technology of inserting a nano-scale metal nano-insertion layer and by using the light reflection and absorption of a dense metal nano film and the small size of metal atoms, most UV light can be reflected, and therefore, a fragile organic functional layer is protected. Secondly, when metal small molecules smaller than a nanometer scale and an underlying insulating layer form a dense water-oxygen molecular barrier layer, the packaging effect is further improved.
Owner:FLEXIBLE JIANGSU MATERIALS CO LTD
Induction method of high-heterozygosity tetraploid of new variety of crassostrea gigas 'Haida No.3'
PendingCN112931323AIncrease gene heterozygosityImprove slow growthClimate change adaptationPisciculture and aquariaPolar bodyOstrea gigas
The invention provides an induction method of a high-heterozygosity tetraploid of a new variety of crassostrea gigas 'Haida No.3'. The method comprises the following steps: taking female triploid crassostrea gigas 'Haida No.3' obtained by inhibiting discharge of first polar bodies of fertilized eggs of diploid crassostrea gigas 'Haida No.3' as a female parent; taking a male diploid 'Haida No.3' as a male parent; after the female parent and the male parent are artificially matured, putting ova into seawater to be matured, and when the ova are round through microscopic examination, the ova are matured; conducting insemination on the cured ova and sperms, starting timing after the sperms and the ova are mixed, treating fertilized ova with cytochalasin B, inhibiting discharging of the first polar bodies of the fertilized ova, and collecting and soaking the fertilized ova; and transferring the fertilized ova into a cultivation container for incubation and larva cultivation. The triploid female parent shellfish is obtained by inhibiting the discharge of the first polar bodies of the fertilized ova of the diploid crassostrea gigas 'Haida No.3', and the tetraploid obtained by the triploid female parent shellfish has higher growth advantage due to higher gene heterozygosity.
Owner:OCEAN UNIV OF CHINA
Underwater image restoration method based on wavelength compensation
ActiveCN112488955ASolve the problem of color castSolve problems such as low contrastImage enhancementImage analysisLight spotFacula
The invention provides an underwater image restoration method based on wavelength compensation. The method comprises the following steps: performing nine-digit-based subdivision hierarchical search onan original image to estimate atmospheric light spots; and then calculating a transmission image by using a Haze-lines method in different Jerlov water types, compensating atmospheric light by usingdifferent attenuation coefficients, and calculating a distance image and a depth image to obtain a restored image. In order to further improve the contrast of the underwater image, a contrast-limitedadaptive histogram is used to enhance the restoration result. A final output image is determined according to a selection rule based on gray world hypothesis and information entropy. According to theinvention, the atmospheric light is obtained by using a nine-digit method, so that the influence of scenery and light spots on estimation of the atmospheric light is effectively avoided, and the atmospheric light is accurately estimated. The distance map and the depth map are estimated by using different water types, the underwater image degradation problem is effectively solved, and finally, thecontrast and the brightness of the image can be effectively enhanced by using the contrast-limited adaptive histogram for enhancement.
Owner:DALIAN MARITIME UNIVERSITY
Method for solving frequency spectral signal attenuation problem of Fourier transform ion mobility spectrometer
ActiveCN108226273ASolve the attenuation problemMaterial analysis by electric/magnetic meansUltrasound attenuationSignal quality
The invention discloses a method for solving a frequency spectral signal attenuation problem of a Fourier transform ion mobility spectrometer. The method comprises the steps: in the work process of the Fourier transform ion mobility spectrometer, adjusting a gate closing voltage of an ion gate; under each gate closing voltage in the adjustment process, observing a change condition of a signal meanvalue of frequency spectral signals in the process of increasing the frequency of sweep frequency; and according to the change condition of the signal mean value, selecting the gate closing voltage,having the change amplitude of the signal mean value along with frequency increase less than a preset value, as a best gate closing voltage of the ion gate. The method can improve the frequency spectral signals of the Fourier transform ion mobility spectrometer simply and effectively, improve the quality of the signals and improve the sensitivity and resolution ratio of the detection.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Power lithium battery barrier breaking machine and power lithium battery charging method
ActiveCN114374007ASolve the attenuation problemExtended service lifeSecondary cells charging/dischargingPower batteryMechanical engineering
The invention discloses a power lithium battery barrier breaking machine and a power lithium battery charging method. The power lithium battery barrier breaking machine comprises a direct-current power supply module and a power lithium battery high-frequency charging and discharging module. The working frequency of the power lithium battery high-frequency charging and discharging module is greater than or equal to 1 million Hz; and the power lithium battery high-frequency charging and discharging module repairs the power lithium battery through charging and discharging. The lithium battery attenuation problem caused by the lithium battery crystal dendrites can be successfully solved, and the service life of the lithium battery is prolonged.
Owner:CHANGZHOU ZHIXU NEW ENERGY POWER TECH CO LTD
Control system for wireless integrated X-ray detection apparatus
ActiveCN108088862AReduce weightSolve the attenuation problemTotal factory controlProgramme control in sequence/logic controllersProgrammable logic controllerControl system
The invention belongs to the technical field of industrial X-ray machines and particularly relates to a control system for a wireless integrated X-ray detection apparatus. The control system for the wireless integrated X-ray detection apparatus comprises a PLC (Programmable Logic Controller), a generator pressure detection module, a generator temperature detection module, a power supply module, akilovolt control module, a kilovolt detection module, a controlled silicon driving module and a main circuit module; the PLC is connected with the generator pressure detection module, the generator temperature detection module, the power supply module, the kilovolt control module, the kilovolt detection module, the controlled silicon driving module and the main circuit module; the main circuit module is connected with the kilovolt control module, the kilovolt detection module and the controlled silicon driving module. The control system for the wireless integrated X-ray detection apparatus, disclosed by the invention, has the advantages of high working efficiency, low possibility of being intervened, adjustable parameters, safety and the like.
Owner:丹东市祯晟科技有限公司
Explosion proof gamma-ray detector and mining coal ash analyzer
ActiveCN101551460BImprove permeabilitySolve the attenuation problemX/gamma/cosmic radiation measurmentMaterial analysis by transmitting radiationNuclear engineeringPulverized fuel ash
The present invention discloses an explosion proof gamma-ray detector and mining coal ash analyzer, and the explosion proof gamma-ray detector includes explosion proof case and gamma-ray receiver located in the explosion proof case, a through-hole provided with ray transmission window for guiding the gamma-ray from outside the explosion proof case into the gamma-ray receiver is arranged on the gamma-ray explosion proof end cover of the explosion proof case. The explosion proof gamma-ray detector and mining coal ash analyzer of the invention not only comprise explosion proof character and makethe explosion proof case has higher transmission to low energy gamma-ray, which assures normal work and measuring accuracy of the mining coal ash analyzer and can be used for real-time on-line measurement of coal ash in coal mine that satisfies urgent need of coal industry modernization production.
Owner:BEIJING COAL MINING ELECTRIC EQUIP TECHN DEV
Intelligent banknote recognizer
PendingCN107123186AEasy to input from multiple anglesAvoid miscastingPaper-money testing devicesCoin/currency accepting devicesMan machineEngineering
The invention discloses an intelligent banknote recognizer. The intelligent banknote recognizer comprises a main frame, a touch display screen, a banknote inlet, an identification device and a banknote box, wherein the touch display screen, the banknote inlet, the identification device and the banknote box are arranged in the main frame. The touch display screen is arranged above the main frame and is used for man machine information interaction. The banknote inlet is arranged at the lower part of the main frame and is the porthole through which a banknote is input or withdrawn. The identification device is arranged behind the banknote inlet to identify the authenticity and the nominal value of the banknote. The banknote box is arranged above the identification device and comprises a number of sub-storage boxes used for storing banknotes of different nominal values. According to the invention, the intelligent banknote recognizer integrates the functions such as authentication, identification, storage and management, and can effectively prevent erroneous input of rigid coins; the banknote identification accuracy is improved; and the usage log of the machine can be viewed in real time.
Owner:南京宝坚电子科技有限公司
Remote multi-ATE semiconductor test equipment synchronization method and system and test method
PendingCN113078978ASolve the problem of synchronization accuracySolve the attenuation problemTime-division multiplexSynchronising arrangementTime differenceEmbedded system
The invention provides a remote multi-ATE semiconductor test equipment synchronization method and system and a test method. The synchronization method comprises the following steps: a clock sending device sends a clock coding signal embedded with a clock signal to a plurality of test equipment through a high-speed optical fiber; the test equipment receives the clock coding signal, recovers clocks, and adjusts the clocks of the test equipment to be consistent with the clock of the clock sending device according to a clock adjustment system; the clock sending device sends a trigger coding signal embedded with a trigger signal to the plurality of test equipment through the high-speed optical fiber; the test equipment receives the trigger coding signal and returns the trigger coding signal to the clock sending device through the high-speed optical fiber; and the clock sending device adjusts the time point of sending the trigger coding signal according to the time difference in receiving the trigger coding signal. According to the invention, a 25Gbps high-speed optical fiber is used for transmitting signals, so that high-precision and long-distance synchronous clock and synchronous target triggering among the plurality of semiconductor test equipment are realized, and the system has the characteristics of long synchronous distance, low cost and high precision.
Owner:杭州加速科技有限公司
Linear editing video recorder and linear editing method
ActiveCN105070305ASolve the problem of random access to materials that cannot be achievedFast random searchElectronic editing digitised analogue information signalsGraphicsGraphic card
This application provides a linear editing video recorder and a linear editing method. The linear editing video recorder comprises a hard disk, a graphics card, a video card, an audio card, a control operation panel, an IVDR disk cartridge, a serial port signal processing module, a timeline engine module, and a file reading and writing module, wherein the control operation panel comprises a display screen; the IVDR disk cartridge comprises a playing cartridge and a recording cartridge; the video card and the audio card are used for acquiring and outputting video signals and audio signals respectively; the serial port signal processing module is used for transmitting an operating command sent by the control operation panel to the other modules and sending feedback information of the other modules to the display screen of the control operation panel for display; the timeline engine module is used for copying segments of materials onto a timeline track to be recorded in a virtual manner for editing preview according to in-and-out points of each disk; and the file reading and writing module is used for writing the segments of materials into the hard disk. The linear editing video recorder and the linear editing method adopt the hard disk for storage and combine the hard disk with a timeline architecture, thereby solving the problem that the traditional linear editor is not capable of random access.
Owner:CHINA CENTRAL TELEVISION +1
Control system for tension tester
InactiveCN109283044ASuppress interferenceHigh precisionProgramme control in sequence/logic controllersStrength propertiesCapacitanceSignal enhancement
The invention discloses a control system for a tension tester. Interference suppression circuits suppress electromagnetic interference by electromagnetic interference suppression circuits. Decouplingcapacitors eliminate crosstalk among signals. LC filter circuits filter out unwanted noise signals. Differential noise suppression circuits enter signal enhancement circuits after suppressing differential mode interference. The signal enhancement circuits adopts a complementary amplifier composed of a triode Q2 and a triode Q3 for amplification, and the conduction angle of a single junction transistor Q1 is changed through the difference signals outputted by a dual comparator and then stably outputted after being inverted and held by an operational amplifier AR2, so that the amplified signalsof the complementary amplifier are adjusted, and the problem of attenuation in signal transmission is solved. Finally, the steady signals which are undisturbed and satisfy the signal amplitude are transmitted to a computer or PLC after being isolated by the isolation output circuit , being stabilized and being filtered, thereby improving the test accuracy of the tension tester. The problems that the PLC and the computer communicate with each other, and the signal distortion and attenuation influence the test precision of the tensile tester are effectively solved.
Owner:鹤壁市质量技术监督检验测试中心
Method for Solving Spectrum Signal Attenuation Problem of Fourier Transform Ion Mobility Spectrometer
ActiveCN108226273BSolve the attenuation problemMaterial analysis by electric/magnetic meansFrequency spectrumParticle physics
The invention discloses a method for solving a frequency spectral signal attenuation problem of a Fourier transform ion mobility spectrometer. The method comprises the steps: in the work process of the Fourier transform ion mobility spectrometer, adjusting a gate closing voltage of an ion gate; under each gate closing voltage in the adjustment process, observing a change condition of a signal meanvalue of frequency spectral signals in the process of increasing the frequency of sweep frequency; and according to the change condition of the signal mean value, selecting the gate closing voltage,having the change amplitude of the signal mean value along with frequency increase less than a preset value, as a best gate closing voltage of the ion gate. The method can improve the frequency spectral signals of the Fourier transform ion mobility spectrometer simply and effectively, improve the quality of the signals and improve the sensitivity and resolution ratio of the detection.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
A robot positioning and navigation system and its navigation method
ActiveCN105115498BSolve the attenuation problemRealize Ultrasonic InspectionNavigation instrumentsSimulationNavigation system
Owner:长沙开山斧智能科技有限公司
A linear editing video recorder and linear editing method
ActiveCN105070305BSolve the problem of random access to materials that cannot be achievedFast random searchElectronic editing digitised analogue information signalsGraphicsGraphic card
Owner:CHINA CENTRAL TELEVISION +1
Preparation method and application of graphene coated lead-lead oxide composite material
ActiveCN108717969AImprove redox efficiencySolve the attenuation problemLead-acid accumulatorsCell electrodesRedoxLead oxide
The invention relates to the technical field of lead acid storage batteries, in particular to a preparation method of a graphene coated lead-lead oxide composite material. The preparation method comprises the following steps: (1) weighing oxidized graphene, a conjugated redox polymer and a lead-lead oxide for standby use in proportion respectively; (2) carrying out ball-milling on the lead-lead oxide; (3) blowing the oxidized graphene and the conjugated redox polymer into the lead-lead oxide which is performing ball-milling inside a ball-milling lead powder machine through an air blowing port,and reacting under an ultrasonic wave stirring condition at the temperature of 150 to 180 DEG C to generate the graphene coated lead-lead oxide composite material. The graphene coated lead-lead oxidecomposite material has reversible redox nodes and stably stored electrons, the redox efficiency is improved, and the problem of early capacity fading is effectively solved; the agglomeration of graphene is prevented, and the dispersibility of the graphene is improved; and the conjugated polymer is compounded with the graphene, so that other impurities, such as metal oxides, influencing battery performance are avoided from being introduced.
Owner:CHAOWEI POWER CO LTD
Well mouth control device and method of electric control well completion system
InactiveCN108119087ASolve the attenuation problemAccurate acquisitionSurveySealing/packingControl signalComputer module
The embodiment of the invention provides a well mouth control device and method of an electric control well completion system. The device comprises a shell, a power conversion module, a data transmission module, a signal processing module, a wireless communication module, a power port, a cable connection port and an antenna port, wherein the power conversion module, the data transmission module, the signal processing module and the wireless communication module are located in the shell, and the power port, the cable connection port and the antenna port are located on the shell. The end, outside the shell, of the power port is connected with an alternating power supply, and the end, inside the shell, of the power port is connected with the power conversion module. The power conversion module is connected with the signal processing module and the data transmission module. The end, outside the shell, of the cable connection port is connected with a steel pipe cable, and the end, inside the shell, of the cable connection port is connected with the data transmission module. The end, outside the shell, of the antenna port is connected with an antenna, and the end, inside the shell, of the antenna port is connected with the wireless communication module. By means of the technical scheme, accurate control signals can be transmitted to a bottom-hole regulator and data collected by the bottom-hole regulator can be accurately obtained.
Owner:PETROCHINA CO LTD
Photoionization source capable of automatically tuning signal intensity
PendingCN114597113ASolve the attenuation problemHigh strengthSpectrometer circuit arrangementsIon sources/gunsMass analyzerParticle physics
The invention discloses a photo ionization source capable of automatically tuning signal intensity for a mass spectrum analyzer. The photo ionization source comprises a photo ionization source and a signal automatic tuning system, the photoionization source comprises a vacuum ultraviolet light source, an ion source cavity, a sample introduction pipeline, an ion repulsion electrode, an ion transmission electrode group and a small hole electrode; the signal automatic tuning system comprises a light source power supply, a computer, an optical signal sensor and an AD converter. The vacuum ultraviolet light source and the optical signal sensor are arranged on the two sides of the ion source cavity respectively and are coaxially arranged, so that light emitted by the vacuum ultraviolet light source can reach the optical signal sensor conveniently. The signal intensity of the photo ionization source is linearly related to the light intensity of the vacuum ultraviolet light source, so that the automatic correction of the mass spectrum signal intensity can be realized by tuning the light intensity in real time. The method can solve the attenuation problem of the photo ionization mass spectrometer in long-term use, and has a wide application prospect in the technical field of in-situ online mass spectrometry.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
An electrolytic cell device for stable operation of hydrogen production by high-temperature electrolysis of water, preparation of the electrolytic cell, and method for using the electrolytic cell device
InactiveCN105908211BImprove long-term stabilitySimplified Vegetation CraftCellsElectrical resistance and conductanceElectrolysed water
The invention relates to an electrolytic cell device with high temperature steam electrolysis and stable operation functions, a preparation method of the electrolytic cell, and a using method of the electrolytic cell device, and aims to solve the problem that the performance of a conventional electrolytic cell degrades because the polarization resistance of an oxygen electrode is increased. The preparation method comprises the following steps: (1) preparing an electrolyte; (2) preparing an electrolyte thin film; (3) preparing ceramic powder; (4) preparing porous electrodes; and (5) coating the outer sides of the symmetrical porous electrodes on the two sides of the electrolyte thin film with a confluence material uniformly at sintering temperature of 700-900 DEG C, thereby obtaining the electrolytic cell. The electrolytic cell device provided by the invention comprises a reactor device, collecting pipelines and collectors, and is used for high temperature steam electrolysis. By adoption of the electrolytic cell device, the problem that the conventional electrolytic cell degrades because the polarization resistance of the oxygen electrode is increased can be solved.
Owner:NORTHEAST FORESTRY UNIVERSITY
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