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38results about How to "Consistent range" patented technology
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Multichannel radar amplitude and phase automatic correcting method and device
InactiveCN101957444AImprove self-diagnosisShort test process timeRadio wave reradiation/reflectionPhysicsRadio frequency
The invention discloses multichannel radar amplitude and phase automatic correcting method and device. The method comprises the following steps of: before a radar system works, respectively feeding the same radio frequency test signal into various receiving channels of a multichannel radar system by a feed source to obtain the phase characteristic and the amplitude characteristic of various receiving channels; calculating a phase difference and an amplitude specific value between other channel signals and a reference signal by using one of channel signals as a reference signal; and then enabling the radar system to work, carrying out automatic correction on target echoes of all the channels by utilizing the obtained phase difference and the amplitude specific value so as to ensure the consistency of all the channels on amplitudes and phases. When a transmission frequency point is changed or a radar working environment is changed, the amplitude and phase characteristics of the receiving channels are unavoidably changed; and the invention can accurately and conveniently measure and correct the change of the amplitude and phase characteristic and ensure the consistency of all the channels, thereby expanding the working frequency range and the environmental adaptability of radar and improving the maintainability of the radar.
Owner:中国船舶重工集团公司第七二三研究所
Method and apparatus for selective treatment of biological tissue
ActiveUS20180177550A1Improve energy absorptionSufficient selective absorptionSurgical instrument detailsEnergy transferIrradiation
An exemplary treatment system can be provided which can include a laser system configured to emit at least one laser beam, and an optical system configured to focus the laser beam(s) to a focal region at a selected distance from a surface of a tissue. The focal region can be configured to illuminate at least a portion of a target. The optical system can cause an irradiation energy transferred to the focal region of the laser beam(s) to (i) generate a plasma in a first region of the tissue adjacent to the target, and (ii) avoid a generation of a plasma in a second region of the tissue. The optical system has a numerical aperture that is in the range of about 0.5 to about 0.9. An exemplary method can also be provided to control such treatment system.
Owner:BLOSSOM INNOVATIONS LLC +1
Electromagnetic flux converter simulated calibration apparatus
InactiveCN101216339ALow costCalibration stableVolume meteringTesting/calibration for volume flowMicrocontrollerMicrocomputer
The invention relates to an analogue calibration device for an electromagnetic flow converter, solving the calibration problem of the electromagnetic flow converter. The technical proposal includes that the analogue calibration device comprises a frequency receiving circuit with the input end connected with the output end of the calibrated electromagnetic flow converter to be calibrated and the output end connected with the input interfaces of a single chip microcomputer and peripheral circuits; a communication circuit with the input end connected with signal interfaces of the single chip microcomputer and peripheral circuits and the output end connected with the calibrated electromagnetic flow meter converter; a LCD interface with the input end connected with the output ends of the single chip microcomputer and peripheral circuits; the single chip microcomputer and peripheral circuits with the input ends connected with the output ends of a keystroke circuit and the frequency receiving circuit and the output ends connected with an analogue signal generating circuit, the communication circuit and the LCD interface; an exciting signal transfer circuit with the input end connected with the output end of the exciting circuit of the electromagnetic flow converter to be calibrated; and an analogue signal generating circuit with the input end connected with the output ends of the exciting signal transfer circuit, the single chip microcomputer and peripheral circuits and the output end connected with the input end of the electromagnetic flow converter to be calibrated.
Owner:ZHONGHUAN TIG
Plane diagram combined server type servo system and control method thereof
ActiveCN105959884APerfect waveform restorationConsistent rangeElectrical transducersLoudspeakerHigh frequency
The invention provides a plane diagram combined server type servo system and a control method thereof. A driving coil of a loudspeaker in the system matches a precise diagram position feedback sensor group correspondingly, each diagram position feedback sensor group comprises a medium-high frequency sensing module and a low frequency sensing module at least, the medium-high frequency sensing module and the low frequency sensing module measure medium-high frequency amplitude and low frequency amplitude in vibration of a diaphragm part controlled by the corresponding driving coil respectively, and transmit corresponding measuring signals to a control unit, and the control unit realizes high-speed precise servo control via a digital algorithm. Nonlinear distortion is controlled within the minimal range to the largest extent theoretically, an integral plane diaphragm of brand new design is used to replace a present tapered diaphragm, and waveform can be restored completely. The system is a transduction system in which electronics are combined with machinery deeply and diaphragm motion amplitude is basically consistent with input signals.
Owner:深圳市优塔晟科技有限公司
Medical air production systems
InactiveUS20070089796A1Easy to controlImprove abilitiesRespiratorsControlling ratio of multiple fluid flowsNitrogenEngineering
The present invention relates to systems to supply medical grade air in which critical flow conditions for delivering oxygen and nitrogen to a system are provided. The ratio of pressure downstream of the orifices to the pressure upstream of orifices for the oxygen and nitrogen is maintained near or below critical pressure ratio.
Owner:PRAXAIR TECH INC
Information transmission device and method based on mobile terminal
InactiveCN106804018AImprove anti-interference abilityConsistent rangeTransmission systemsSound producing devicesVIT signalsAudio signal
The invention belongs to the technical field of communication equipment, and concretely relates to an information transmission device and method based on a mobile terminal. The device comprises: an acquisition unit, which obtains a current vibration frequency of the information transmission device after the information transmission device is started and forms an acquisition information output; an information reception unit, which receives an audio signal output by the mobile terminal; a control unit, which forms a control signal output according to the received acquisition information and the audio signal; and a bone conduction unit, which generates mechanical vibration matching the audio signal under the effect of the control signal. The acquisition unit acquires the acquisition information that matches variable noise, the control unit forms a compensation signal output that can inhibit the variable noise on the basis of the acquisition information, the audio signal and / or a feedback signal, and the compensation signal and the variable noise are opposite in phase and consistent in amplitude. A wind noise resistance capability of the information transmission device is provided through the compensation signal, and an anti-interference capability of the information transmission device is improved.
Owner:SHANGHAI YUDE TECH CO LTD
Distributed receiving array channel error calibration method and system based on microwave photon stable-phase transmission link
ActiveCN113093157AConsistent rangePhase coincidenceWave based measurement systemsSoftware engineeringMechanical engineering
The invention provides a distributed receiving array channel error calibration method based on a microwave photon stable-phase transmission link. The method comprises the following steps that firstly, a correction signal is modulated to an optical domain through a directly modulated laser, then the signal is divided into n optical carrier microwave signals through optical fibers with equal length, a photoelectric detector at each unit position of a receiving end converts the optical microwave signals into equal-phase electric signals and transmits the electric signals to a receiving antenna array so that relative stability of signal phases at all receiving end positions can be ensured; and finally (n+1) paths of equiphase calibration signals enter a receiver from all receiving channels and reference channels, and data analysis and time delay and amplitude phase estimation are carried out at a signal processing terminal. A microwave photon stable-phase transmission link is used for transmitting a calibration signal in a long distance, and it is guaranteed that the amplitude and the phase of the calibration signal fed into a front end of a distributed receiving array channel are kept consistent; and the received calibration signal is processed, and the relative amplitude, phase and time delay error among the channels are estimated.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Vertical barrel cooker for even-temperature cooking and related methods
The present invention provides improved outdoor cooking systems and methods in various styles for cooking food in an efficient and consistent manner, with little required monitoring or action by the user. Embodiments of the cooker of the present invention include an upper cooking vessel which may be removably engaged with a separate base, a removable fuel basket, and a bottom air intake opening having a diffuser cap above it that not only disperses incoming air flow to the perimeter of the vessel for a more even burn and consistent cooking chamber temperature, but also directs ash and drippings from the food being cooked away from the intake opening. This prevents the intake opening from being clogged, and makes the drippings available for evaporation to provide moisture inside the cooker. The intake opening is adjustable allowing a user to control the amount of air flowing into the cooking chamber.
Owner:THE BARREL HOUSE COOKER CO LLC
Semi-automatic cardiopulmonary resuscitation machine
InactiveCN108721092AReduce labor intensityCardiopulmonary resuscitation is beneficialRespiratorsElectrotherapySemi automaticEmergency medicine
The invention relates to the field of medical devices, and discloses a semi-automatic cardiopulmonary resuscitation machine. The semi-automatic cardiopulmonary resuscitation machine is simple in operation, easy to learn and use, and can be used for rescuing patients with sudden cardiac arrest. The semi-automatic cardiopulmonary resuscitation machine comprises a lifting system and a cardiopulmonaryresuscitation system, wherein the cardiopulmonary resuscitation system comprises a cover, a shell is arranged below the cover, a hole is arranged in the center of the shell, a pressing rod penetratesthrough the hole, a first up-and-down reciprocating mechanism is arranged above the pressing rod, the first upper and lower reciprocating mechanism is connected with a first shaft 1, the first shaftis arranged on the shell and is located at one side of the pressing rod, and the first shaft is connected with a motor through a first transmission mechanism, the first shaft is connected with a second shaft through a second transmission mechanism, the second shaft is connected with a pressing plate through the upper and lower reciprocating mechanism second, a breathing air bag fixed in the shellis arranged right side below the pressing plate, the breathing air bag is connected with one end of a tube, and the other end of the tube is connected with mask; the lifting system comprises a lifting device and a protective shell, wherein the lifting device is positioned in the protective shell; the upper part of the lifting device is connected with the lower part of the shell; the lower part ofthe lifting device is connected with the plate.
Owner:张洪涛
Multi-channel radio frequency receiving device and multi-channel down-conversion assembly
PendingCN114650015AConsistent rangeA good level of consistencyPulse automatic controlMulti-frequency-changing modulation transferenceLocal oscillator signalLow-pass filter
According to the multichannel radio frequency receiving device, each channel comprises a K / S frequency conversion module and an S / P module, and each K / S frequency conversion module comprises an amplitude limiter, a first amplifier, a first band-pass filter, a first frequency mixer and a second band-pass filter which are connected in sequence; the S / P module comprises a second amplifier, a first phase compensator, a second mixer, a low-pass filter, a third amplifier, a numerical control attenuator, a second phase compensator and a third band-pass filter which are connected in sequence; and the input of the second amplifier is the output of the second band-pass filter. Compared with a traditional multi-channel design, a local oscillator signal is firstly driven and then enters the 0-degree power divider, the amplitude-phase consistency of the multi-channel local oscillator signal is greatly ensured, and the amplitude-phase consistency among multiple channels is greatly improved due to the fact that the digital attenuator and the phase compensation network are additionally arranged in the receiving channel of the secondary frequency conversion.
Owner:SOUTHEAST UNIV +1
Accurate laser marking device and accurate laser marking method
InactiveCN107695524AConsistent rangeConsistent depthLaser beam welding apparatusOptoelectronicsLaser
The invention provides an accurate laser marking device and an accurate laser marking method adopting the accurate laser marking device. The accurate laser marking method comprises the following stepsof acquiring an image of a pre-marked area through a camera and transmitting the image to a master control device; setting multiple marking points in the pre-marked area and the marking frequency ofeach of the multiple marking points through the master control device according to the image; generating a marking laser through a laser generator according to an instruction of the master control device; and controlling motion of a galvanometric scanner system through a galvanometric scanner control panel according to the instruction of the master control device to change the propagation direction of the laser. By means of the accurate laser marking method, it is guaranteed that the practical marking range and depth are consistent with the marking range and depth set by an operator in a master control program through correction of the scaling ratio and the offset correction; accordingly, the purpose of accurate marking is achieved.
Owner:ZHONGWEI XIANGGUANG BEIJING TECH CO LTD
Antenna array element and millimeter wave antenna array of vertically integrated filter and communication device
PendingCN109687172APhase coincidenceConsistent rangeAntenna supports/mountingsIndividually energised antenna arraysResonanceArray element
The invention discloses an antenna array element of a vertically integrated filter. The antenna array element includes a dual polarized cavity filter and a dual polarized radiating element integratedon top of the dual polarized cavity filter; the dual polarized cavity filter is composed of a plurality of dual polarized resonance cavities which are connected in order from bottom to top, and a coupling window is arranged between the adjacent dual polarized resonance cavities. The invention also discloses a millimeter wave antenna array and a millimeter wave communication device. The element integrates the radiating element and the filter in a vertical direction, has the advantages of compact structure and small space occupation, and more importantly, ensures that the phases and amplitudes of signals transmitted by each array element in the antenna array are substantially the same.
Owner:PIVOTONE COMM TECH
Massage shaft and machining method thereof
The invention discloses a part of a massage chair and a machining method of the part, in particular to a massage shaft used in a massage chair reduction box and a machining method of the massage shaft, mainly solving the technical problems that fatigue cannot be eliminated due to violent and nonuniform massage actions of the traditional massage chair in the prior art and the traditional massage chair has higher requirement for transmission side gaps and otherwise has idle stroke and the like. The massage shaft comprises an intermediate shaft, wherein two end parts of the intermediate shaft are respectively provided with an end shaft in a connecting manner, threaded heads are arranged on the end shafts, center lines of the intermediate shaft and the end shafts are positioned in the same plane but are not positioned on the same line, and included angles of the intermediate shaft and the two end shafts are same. The machining method comprises the steps of: blanking, turning, machining a clamp spring groove, drilling, then aslant fixing the massage shaft by using a clamp, and finally turning the end shafts and the threaded heads.
Owner:HANGZHOU XINGDA MACHINERY +1
Interference-resistant antenna unit capable of improving amplitude phase consistency and interference-resistant array antenna
PendingCN109888489AImprove low elevation high gainImprove anti-interference abilityRadiating elements structural formsAntennas earthing switches associationPhase shiftedInterference resistance
The invention discloses an interference-resistant antenna unit capable of improving amplitude phase consistency. The interference-resistant antenna unit comprises a metal isolation surrounding frame,a microstrip antenna, a power division phase-shift feeding plate, an antenna lining plate and a coaxial connector, wherein the metal isolation surrounding frame is a metal frame of which the top is opened and the circumference is closed, the microstrip antenna is arranged in the metal frame, a gap is reserved between the circumference of the microstrip antenna and an inner wall of the metal frame,the top of the microstrip antenna is lower than the top of the metal frame, the power division phase-shift feeding plate is arranged at an inner side of the bottom of the metal frame, the antenna lining plate is arranged at an outer side of the bottom of the metal frame, and the coaxial connector is used for feeding the microstrip antenna by the power division phase-shift feeding plate. By the interference-resistant antenna unit, the performance index of the amplitude phase consistency of each antenna unit is effectively improved, the interference-resistant performance is obviously improved,and the requirement of system stable positioning of an interference-resistant array antenna under a three-interference system is met. The invention also provides the interference-resistant array antenna.
Owner:深圳市朗赛微波通信有限公司
Method and apparatus for selective treatment of biological tissue
ActiveUS10973578B2Sufficient selective absorptionAvoid unwanted damageSurgical instrument detailsOptic systemMechanical engineering
Owner:BLOSSOM INNOVATIONS LLC +1
Sweeping mechanism with a variable sweeping plane disc for sweeping of road sweeper
The invention discloses a sweeping mechanism with a variable sweeping plane disc for sweeping of a road sweeper. The sweeping mechanism comprises a base, wherein a rack cavity and a gear cavity are formed in the base; a rack is in sliding fit with the interior of the rack cavity; a first motor is mounted on the side wall of the base; the output shaft of the first motor extends into the gear cavity; a driving wheel is mounted on the output shaft of the first motor; a plurality of grooves are symmetrically formed in the base; a rotating rod is rotatably connected into each groove; a plurality ofgear teeth are uniformly mounted at the end, in the corresponding groove, of each of the rotating rods; a sweeping disc is mounted at the end, far away from the corresponding groove, of each of the rotating rods; and a belt pulley is mounted on each of the rotating rods. The sweeping mechanism has the following advantages: the sweeping mechanism is skillful in structure and reasonable in design,increases the sweeping area of the sweeping disc in the horizontal direction to further increase the area in the advancing direction of the road sweeper, so that when a section of road is swept, the times of moving back and forth of the road sweeper is reduced, the resource is saved, and step edge side wall difficult to clean can be effectively cleaned.
Owner:福建省康洁环保科技有限公司
Image frequency rejection mixer
PendingCN111431484AConsistent rangeReduce imbalanceMulti-frequency-changing modulation transferenceIntermediate frequencyFrequency mixer
The invention relates to an image frequency rejection mixer, which comprises a signal receiver used for carrying out phase change and coupling on an input signal to generate two signals with a specified phase difference; a signal adjusting component connected with the signal receiver and used for separately adjusting the phases and amplitudes of the two signals with the specified phase difference;a frequency mixer connected with the signal adjusting component; and a signal transmitter connected with the two frequency mixers and used for combining the two frequency mixing signals to form an output signal of which the frequency is different from that of the input signal. A phase shift network and an adjusting network are arranged in an intermediate frequency circuit and a local oscillator,so that the phases of intermediate frequency signals (or local oscillator signals and low-frequency signals) input into two frequency mixers are completely orthogonal as much as possible, the amplitudes are basically consistent, the unbalance is reduced, and the image frequency suppression degree and the local oscillator signal suppression degree are optimized.
Owner:JINAN INSPUR HIGH TECH TECH DEV CO LTD
Self-adaptive shaking special seat for preventing needle from falling off for pediatric infusion
InactiveCN112755310AEasy wrap-around installationReduce voluntary shakingInfusion devicesMedical applicatorsEngineeringFluid administration
The invention discloses a self-adaptive shaking special seat for preventing a needle from falling off for pediatric infusion. The self-adaptive shaking special seat comprises a seat plate, arc-shaped strip rods, an infusion chair, an anti-falling fixing rod, safety armrests and a standby arm-chair, wherein two groups of sliding grooves are formed in the top of the seat plate; two groups of sliding blocks are arranged in the sliding grooves in a sliding manner; two groups of arc-shaped strip rods are arranged on the surface of the top of the seat plate; two groups of connecting rods are arranged on the tops of the arc-shaped strip rods; the infusion chair is arranged on the tops of the connecting rods; a U-shaped sliding frame is arranged on the surface of the infusion chair through a hole in a sliding manner; a support frame is arranged on the top of the U-shaped sliding frame; the anti-falling fixing rod is arranged on the top of the U-shaped sliding frame; and the arc-shaped safety armrests are arranged on the surfaces of two sides of the front side of the infusion chair. According to the self-adaptive shaking special seat disclosed by the invention, due to the arrangement of the anti-falling fixing rod and the arc-shaped strip rods, the device can drive the whole device to shake synchronously when the infusion chair shakes, so that the relative stability of the infusion bottle is further maintained so as to reduce the shaking effect, and the needle falling phenomenon is avoided.
Owner:张雪梅
Mobile communication base station based on metamaterial antenna
ActiveCN103298166AMiniaturizationLightweightAntenna arraysRadiating elements structural formsRadio frequency signalComputer module
A mobile communication base station based on a metamaterial antenna comprises a content access module, a radio remote module, a software radio configuration module and the metamaterial antenna. The content access module receives contents of communication signals of various systems provided by various information sources; the radio remote module is used for converting the communication signals of the various systems between analog radio-frequency signals and baseband signals and processing redundancy in the radio-frequency signals; the software radio configuration module carries out corresponding configuration on the communication signals of the various systems processed by the radio remote module for the metamaterial antenna; the metamaterial antenna converts electrical signals into electromagnetic waves or allows the electromagnetic wave to be converted into the electrical signals. Therefore, consistency of analog discrete components of the mobile communication base station is kept, and consistency of the amplitude and the phase of the signals is guaranteed; the size of a product becomes small, the weight of the product is reduced, and thus miniaturization, a light-weight trend and integration of the whole mobile communication base station are achieved.
Owner:KUANG CHI INST OF ADVANCED TECH
Novel GSM (Global System for Mobile Communication) wireless network dual-band frequency joint planning technology theory
The invention provides a basic guiding principle of a new GSM (Global System for Mobile Communication) wireless network planning, points out the development direction of the traditional large 2G (second Generation) wireless networks, invents a unique dual-band frequency joint planning technology under the guidance of the principle, and once plans a dual-band and dual-structure GSM wireless network to a single-structure wireless network or a composite-structure wireless network which takes the single structure as main structure through joint planning in a zone where wireless base stations are densely distributed. A single-structure GSM wireless network planning chart is shown in abstract appended drawings. The technology can theoretically realize the purposes of rapid promoting the capacity of traditional dual-structure wireless networks by a large margin, saving investment and protecting the environment. The invention can reduce the number of neighboring subdistricts defined by each district and promote fusion of the 2G network with the 3G network.
Owner:陈为忠
Multi-channel power equalizer
The invention discloses a multi-channel power equalizer which comprises a shell and a distribution board arranged in the shell. The distribution board is provided with a first radio frequency input interface, a second radio frequency input interface, a first radio frequency output interface, a second radio frequency output interface and an antenna interface. The distribution board is provided witha branch output coupler and a radio frequency power amplifier. The first radio frequency input interface is connected in series with at least three branch output couplers and then connected with thefirst radio frequency output interface. The second radio frequency input interface is connected in series with at least three branch output couplers and then connected with the second radio frequencyoutput interface. Each branch output coupler is correspondingly connected with one radio frequency power amplifier in a one-to-one way. Each radio frequency power amplifier is correspondingly connected with one antenna interface in a one-to-one way. The multi-channel power equalizer realizes the combination of transmission and suitable power distribution, enables the power of antenna array nodes to be consistent, realizes uniformity of field strength coverage and also reserves the output interface for interconnection in advance.
Owner:内江喜马雅拉网络技术有限公司
Preparation method of weight-losing far infrared membrane
ActiveCN104742455AIncrease temperaturePromote circulationSynthetic resin layered productsSkin temperatureOrganic molecules
The invention discloses a preparation method of a weight-losing far infrared membrane. The method comprises the steps of mixing, extruding particles, remixing, co-extruding for forming, and standing. According to the weight-losing far infrared membrane, the skin temperature can be increased, the blood circulation is promoted, the amplitude and the frequency of organic molecules in a human body are consistent to those in far infrared vibration, so that skin tissues generate resonance, the skin tissues generate heat along with the increase of the amplitude, then the blood capillary is expanded, blood circulation is promoted, tissue metabolism is accelerated, and the purposes of consuming subcutaneous fat and activating and beautifying skin are achieved finally.
Owner:DONGGUAN ZHITENG PLASTIC PROD CO LTD
Compensator mounting adjusting device and compensator site mounting method
PendingCN111750196AConsistent rangeEasy to installPipeline expansion-compensationWorking temperatureControl theory
A compensator mounting adjusting device is matched with a compensator; the compensator comprises an outer sleeve, an inner guide pipe, an elastic telescopic pipe and a protective sleeve; the compensator mounting adjusting device comprises an outer ring sleeve and an inner ring sleeve; the outer ring sleeve is connected with one end of the protective sleeve; the inner ring sleeve is connected withone end of the outer sleeve; the outer ring sleeve is arranged on the external wall of the inner ring sleeve in a sleeving manner; the outer ring sleeve is also clamped with the protective sleeve; anaxially distributed temperature scale is pre-arranged on the external wall of the inner ring sleeve; the coincided part of the outer ring sleeve and the inner ring sleeve in the axial direction is adjustable. According to the compensator mounting adjusting device, a fuel pipe compensator can be adjusted and rapidly and accurately mounted according to a site mounting temperature to guarantee the consistency between an actual working temperature range of a fuel pipe and a preset range and guarantee the service life. Compared with a traditional screw rod device, the compensator mounting adjustingdevice has the advantages that the distance between the fuel pipe and a mounting wall surface after mounting is reduced, and the stability and firmness after mounting are enhanced.
Owner:成都众远管业有限公司
A system and method for equalizing distribution of indoor signals
ActiveCN110868721BConsistent powerImprove uniformityRadio transmissionNetwork planningDistribution systemEngineering
The invention discloses an indoor signal equalization distribution system, which includes an indoor micro base station and a plurality of radio frequency power equalizers connected in series through radio frequency transmission lines, the signal output port of the indoor micro base station is connected to the radio frequency power equalizer at the head end through the radio frequency transmission line The signal input port is connected, the branch signal output port of each said radio frequency power equalizer is respectively connected with a radiation antenna, each said radio frequency power equalizer, the radio frequency transmission line connected with the signal input port of the radio frequency power equalizer and connected The radiation antenna on the radio frequency power equalizer is a signal radiation node. The invention can make the 5G signal fully covered indoors, and the coverage, amplitude and phase of the signal are highly consistent, and the receiving effect of the mobile terminal is good.
Owner:内江喜马雅拉网络技术有限公司
Implementation method of spaceborne imaging spectrometer based on multi-channel emccd
InactiveCN103900690BImprove signal-to-noise ratioImprove uniformitySpectrum investigationQuantum efficiencySignal-to-noise ratio (imaging)
The invention discloses a method for achieving a spaceborne imaging spectrometer based on a multi-channel EMCCD, and relates to the method for achieving the spaceborne imaging spectrometer. The method mainly solves the problems that due to the fact that many spectrum segments exist in an existing spaceborne imaging spectrometer, the signal to noise ratio is low, and the required frame frequency is high. On the basis of the thought of splicing a plurality of linear array image sensors, the method for achieving the imaging spectrometer based on the multi-channel EMCCD is provided. Each linear array image sensor receives physical information of different spectrum segments, and original high-requirement frame transfer time is converted into low-requirement line transfer time; images generated in the linear array image sensors are electronically multiplied and then are output so as to improve the signal to noise ratio of multi-spectrum-segment signals; the multiplication gain value is set by each linear array image sensor according to the quantum efficiency in the spectrum segments, the amplitude of output signals of the spectrum segments is kept consistent, the uniformity of the output signals of the spectrum segments is improved, and the whole dynamic range is widened.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Mobile communication base station based on metamaterial antenna
ActiveCN103298166BMiniaturizationRealize integrationAntenna arraysRadiating elements structural formsRadio frequency signalMiniaturization
A mobile communication base station based on a metamaterial antenna comprises a content access module, a radio remote module, a software radio configuration module and the metamaterial antenna. The content access module receives contents of communication signals of various systems provided by various information sources; the radio remote module is used for converting the communication signals of the various systems between analog radio-frequency signals and baseband signals and processing redundancy in the radio-frequency signals; the software radio configuration module carries out corresponding configuration on the communication signals of the various systems processed by the radio remote module for the metamaterial antenna; the metamaterial antenna converts electrical signals into electromagnetic waves or allows the electromagnetic wave to be converted into the electrical signals. Therefore, consistency of analog discrete components of the mobile communication base station is kept, and consistency of the amplitude and the phase of the signals is guaranteed; the size of a product becomes small, the weight of the product is reduced, and thus miniaturization, a light-weight trend and integration of the whole mobile communication base station are achieved.
Owner:KUANG CHI INST OF ADVANCED TECH
Shaping method and apparatus for rapid jumping video signal of mobile analog television
ActiveCN102256046BConsistent rangeAvoid lossTelevision system detailsColor television detailsHeight differenceComputer science
The invention relates to a shaping method for a rapid jumping video signal of a mobile analog television. The method comprises the following steps: real-time detecting a black level of a composite video broadcast signal (CVBS) of a last row and a black level of a CVBS of a current row and taking a difference value between the black level of the CVBS of the last row and the black level of the CVBS of the current row as a height difference of the black level of the last row; And calculating compensated levels of all sampling points in the CVBS of the last row point by point by utilizing the black level of the CVBS of the last row and the height difference and compensating black levels of the sampling points by the compensated levels, so that the CVBS has a unified black level. In addition, the invention also discloses a shaping apparatus for a rapid jumping video signal of a mobile analog television. After the application of the embodiment of the invention, when a CVBS level jumps rapidly, the CVBS can have a unified black level and a signal amplitude, so that occurrence of a black vertical strip is avoided.
Owner:HUAWEI TEHCHNOLOGIES CO LTD
Shaping method and apparatus for rapid jumping video signal of mobile analog television
ActiveCN102256046AConsistent rangeAvoid lossTelevision system detailsColor television detailsVIT signalsElectricity
The invention relates to a shaping method for a rapid jumping video signal of a mobile analog television. The method comprises the following steps: real-time detecting a black level of a composite video broadcast signal (CVBS) of a last row and a black level of a CVBS of a current row and taking a difference value between the black level of the CVBS of the last row and the black level of the CVBS of the current row as a height difference of the black level of the last row; And calculating compensated levels of all sampling points in the CVBS of the last row point by point by utilizing the black level of the CVBS of the last row and the height difference and compensating black levels of the sampling points by the compensated levels, so that the CVBS has a unified black level. In addition, the invention also discloses a shaping apparatus for a rapid jumping video signal of a mobile analog television. After the application of the embodiment of the invention, when a CVBS level jumps rapidly, the CVBS can have a unified black level and a signal amplitude, so that occurrence of a black vertical strip is avoided.
Owner:常熟市知识产权运营中心有限公司
Voice-frequency signal preprocessing device of radio sound transmitting equipment
InactiveCN1157875CConsistent rangeEliminate whistleSonic/ultrasonic/infrasonic transmissionWeak voicePhase shifted
A voice-frequency signal preprocessing device includes: pre-emphasis circuit, voice-frequency amplification circuit, equalizer, phase-shift circuit and high-pitched and low-pitched voice band-pass filter. The voice-frequency amplification circuit uses CPU unit to control its gain, and the CPU unit can output code signal to said voice-frequency amplification circuit and control its feedback quantity according to detection result of its amplification output signal, and regulate the amplitude of voice-frequency signal. The equalizer and make phase-shift of its output signal, and make it lag at 90 deg. Said invention can make strong / weak voice frequency signal amplitude equally output, can eliminate the whistling due to signal superposition so as to extend the distance (range) of using mike by a user.
Owner:赵锦伟
Electromagnetic flux converter simulated calibration apparatus
InactiveCN101216339BLow costCalibration stableVolume meteringTesting/calibration for volume flowMicrocontrollerMicrocomputer
Owner:ZHONGHUAN TIG
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