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44results about How to "Not subject to electromagnetic interference" patented technology
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Large-scale alteration lithofacies positioning and predicating method for hydrothermal deposit
ActiveCN104156601AOvercoming Difficult Spatial Orientation ProblemsNot subject to electromagnetic interferenceSpecial data processing applicationsProspectingMineralogy
The invention discloses a large-scale alteration lithofacies positioning predicating method for a hydrothermal deposit. Deep deposit or ore body direct positioning predicating is conducted through working procedures of an ore-forming structure elaborate analyzing and alteration lithofacies mapping stage, an alteration lithofacies zoning stage and a buried ore positioning predicating stage. According to the method, the problem that deep buried ore bodies are difficult to predicate due to strong abnormity multiplicity and difficult full spatial domain positioning of a conventional objectifying prospecting method is solved.
Owner:KUNMING UNIV OF SCI & TECH
Dredging synthetic platform management system of trail suction dredger based on redundancy network
ActiveCN101464690AImprove data transfer performanceImprove communication distanceTransmissionProgramme total factory controlInformation resourceRing network
The invention relates to an integrated platform management system for the dredging of a trailing suction hopper dredger, in particular to an integrated platform management system based on a redundant network. The system comprises network switch, a server, a plurality of workstations, a PLC and a gateway which are respectively connected with a bottom ring network, and a top ring network; the PLC is used for realizing the control on the input and the output of field-working devices of a dredger, the gateway is used for realizing the conversion between the third protocol and the TCP / IP protocol, the PLC and the gateway are respectively connected with the bottom ring network through the network switch; the workstations for managing and monitoring data are connected with the top ring network through the network switch; and the server is connected with the bottom ring network and the top ring network through network switches arranged on the bottom ring net and the top ring net. The invention realizes the full sharing of the whole ship information resource and improves the system reliability.
Owner:ZHENJIANG YIHUA SYST INTEGRATION +2
High-voltage direct current transmission line corona loss measurement system
InactiveCN104698265AEasy to install and serviceAccurate measurementPower measurement by current/voltageMeasurement using digital techniquesElectricityEngineering
The invention discloses a high-voltage direct current transmission line corona loss measurement system. The high-voltage direct current transmission line corona loss measurement system comprises a corona current measurement system, a high voltage measurement system and a comprehensive corona loss processing unit; the comprehensive corona loss processing unit receives, calculates and processes the corona current value measured by the corona current measurement system and the voltage value measured by the high voltage measurement system and calculates the corona loss data. Compared with the prior art, the corona current measurement system of the high-voltage direct current transmission line corona loss measurement system uses split type structure, and the field installation and repairing are simplified; the high-voltage direct current transmission line corona loss measurement system is suitable for a super / extra-high voltage direct current transmission line, and the measurement system is precise in measurement result, strong in anti-electric shock performance, effective and easy to use; the high-voltage direct current transmission line corona loss measurement system is capable of stably running under an extra-high voltage direct current environment and different severe natural environment for a long time; the high-voltage direct current transmission line corona loss measurement system provides an effective and reliable technological way for deeply researching the high-voltage direct current transmission line corona loss.
Owner:STATE GRID CORP OF CHINA +2
Bumping position measuring system and method based on bidirectional detection of fiber ring
InactiveCN106643838AReduce volumeLight in massConverting sensor output opticallyFiber ringSystem structure
The invention discloses a bumping position measuring system and method based on bidirectional detection of a fiber ring. The system comprises a light source, first, second and third couplers, a sensing fiber, first and second detectors and a processor; the first coupler couples first optical signals output by the first source to obtain second and third optical signals; the first detector receives the third optical signal which is transmitted to the second coupler via the sensing fiber and output, the second detector receives the second optical signal which is transmitted to the third coupler via the sensing fiber and output, and the two detectors detect returned optical signals, and output first and second voltage signals respectively; and the processor determines a bumped position according to the first and second voltage signals. According to the invention, the bumped position of an object to be measured can be measured more rapidly and accurately, the system structure is simplified, the system cost is reduced, and conditions are provided for batch application of schemes.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Measuring device and measuring method for target-hitting moments
The invention discloses a measuring device and a measuring method for target-hitting moments. Optical fiber sensors are respectively composed of a single sensing optical fiber, are arranged in a target in a reciprocating mode and cover the target surface area of the target, and the arrangement distance between the optical fiber sensors is smaller than the diameter of an area formed by target hitting of test bullets; optical signals emitted by a light source are transmitted to a photoelectric detector through the optical fiber sensors, converted into electric signals through the photoelectric detector and input into an information collecting and processing module after undergoing signal processing; a time service module obtains the current time information for being used by the information collecting and processing module; when the on-off state signals of the optical fibers are changed to 0 indicating the non-light transmission state from 1 indicating the light transmission state, the time information in the time service module is read and serves as the target-hitting moment. The device and the method can accurately measure the target-hitting moments of the test bullets and can serve as auxiliary analysis means of other range measuring modes, and the extraction efficiency of effective data can be improved. According to the implementation scheme, the method has the advantages that the cost is low, the response speed is high, the measurement accuracy is high, the reliability is high, installing and laying are simple and the anti-jamming capability is high.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Pollution-free transport synchronous release system for giant airships
ActiveCN108891573ANot subject to electromagnetic interferenceFirmly connectedItem transportation vehiclesLighter-than-air aircraftCommunications systemPull force
Provided is a pollution-free transfer synchronous release system for a giant airship, comprising a communication system, a central control computer, a pollution-free release vehicle device, a tether module, and a synchronous cutting system. The central control computer controls the operation of the non-polluting release vehicle device through the communication system, The central control computercontrols the tether module to adjust the length and tension of the tether rope through the communication system, and the central control computer also sends instructions to the synchronous cutting master controller in all the tether modules through the communication system to control the corresponding cutter through the cutting driver to realize the synchronous cutting of all the tether rope. Theinvention ensures that the relative positions of a plurality of tethered modules remain unchanged, and the incongruity caused by manually driving independent tethered module carriers is avoided, so asto ensure the safety and reliability of the giant airship in the process of releasing and transporting. Moreover, the synchronous cutting system in each tether module is controlled by the central control computer, which ensures the synchronous cutting of multiple tether ropes when the airship is released, and avoids tearing of the airship and other phenomena.
Owner:陕西铁鹰特种车有限公司
Self-help luggage equipment and self-help luggage system as well as installation method
InactiveCN103714610APrevent lossNot subject to electromagnetic interferenceIndividual entry/exit registersPoint of entryEngineering
The invention discloses self-help luggage equipment and a self-help luggage system as well as an installation method. The self-help luggage equipment comprises a detection cabinet and a self-help luggage control system, wherein an inlet is formed in the front end of the detection cabinet, and an outlet is formed in the back end of the detection cabinet; the self-help luggage control system comprises a central control unit, a conveyer belt control detection unit, a sensor detection unit, a luggage information detection unit and an information cue guidance unit. The self-help luggage equipment can be used for achieving the positive technical effects that a weighing belt, an operating panel and a luggage check-in are common equipment of an existing airport, the existing airport resources can be fully utilized, as long as the detection cabinet is arranged on the weighing belt so as to enable the conveyer belt to pass the detection cabinet from the inlet to the outlet, then the central control unit is connected to the operating panel and the luggage check-in, the installation can be finished, and existing equipment can be transformed into the self-help luggage system without changing existing place environments.
Owner:BEIJING ADMORAL TECH
Imaging device and electronic equipment
ActiveCN112492174AGood shooting effectImprove the shooting effectTelevision system detailsColor television detailsElectrical and Electronics engineeringMechanical engineering
The invention discloses a camera device and electronic equipment. A camera is rotationally connected with a base; a first driving part is arranged on the base, is connected with a telescopic cam pieceand drives the telescopic cam piece to rotate; a movable structural part is movably arranged on the base and surrounds the telescopic cam part, the first end of the connecting rod is rotationally connected with the movable structural part, and the second end of the connecting rod is rotationally connected with the camera; the telescopic cam part has an extension state and a contraction state, inthe extension state, the far-end rim of the telescopic cam part makes contact with the inner wall of the movable structural part, the movable structural part can move along with rotation of the telescopic cam part, and the connecting rod can drive the camera to rotate relative to the base along with movement of the movable structural part; and in the contraction state, the far-end rim of the telescopic cam part is separated from the inner wall of the movable structural part. According to the technical scheme, the problem that the anti-shake effect of the electronic equipment is affected due tothe fact that the electronic equipment is easily interfered by the magnetic component in the background art can be solved.
Owner:VIVO MOBILE COMM CO LTD
Pressure detection device and method based on polymer optical fiber junction sensor
ActiveCN113551831ASensitivity adjustableWorking Range AdjustmentFluid pressure measurementMaterials sciencePolymer
The invention discloses a pressure detection device and method based on a polymer optical fiber junction sensor. The device comprises a polymer optical fiber arranged at a required pressure detection position, the polymer optical fiber is knotted, an optical fiber overlapping part formed at the knotted position is an optical fiber knot, pressure is applied to the optical fiber overlapping part for detection, the optical fiber knot is located in the middle of the polymer optical fiber, and the two ends of the polymer optical fiber are connected with a light source and a detector respectively; when the polymer optical fiber knot is subjected to external pressure, the bending angle of the optical fiber is increased, the output light intensity is reduced, and pressure sensing is realized by establishing a one-to-one correspondence relationship between the light intensity and the pressure. The pressure detection device has the characteristics of simplicity in preparation, high sensitivity and capability of distinguishing the pressure direction, and the pressure detection precision and range are adjustable.
Owner:ZHEJIANG UNIV
Movement sensing device, movement sensing method and VR (virtual reality) handle
InactiveCN107402646APrecise Perception EffectNot subject to electromagnetic interferenceInput/output for user-computer interactionGraph readingEngineeringElectrolyte
The invention discloses a movement sensing device, an movement sensing method and a VR (virtual reality) handle. The movement sensing device comprises a cavity, a first electrode, a second electrode, electrolyte and a processor. The cavity forms a closed space; the first electrode is arranged on the bottom wall of the cavity; the second electrode is arranged on the side wall and comprises electric contacts arranged densely; the electrolyte is contained in the cavity, and a space is formed between the liquid level of the electrolyte and the top wall of the cavity. The processor is arranged on the cavity and is electrically connected with the second electrode. Through the method, a function of movement sensing is realized, particularly micro movement can be sensed, and the movement sensing device is less prone to magnetic field interference during operation.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
Dielectric array switch
ActiveCN108398736ANot subject to electromagnetic interferenceUnique photonic bandgap propertiesWaveguide type devicesOptical elementsDielectric cylinderElectromagnetic electron wave
The invention belongs to the technical field of electromagnetic switches, and discloses a dielectric array switch. The switch comprises a pedestal, a medium array composed of M*N dielectric cylindersand arranged on the pedestal and heating components arranged at two sides of the dielectric array; the portion among the dielectric cylinders of the dielectric array is filled with a substance with alow melting point and strong liquidity after melting; when the dielectric array switch works, an incident wave is emitted from the direction parallel to the pedestal to heat the filler; when a heatingtemperature reaches the melting point of the filler, the filler is melted, the filler among the dielectric cylinders is environmental gas, so that dielectric constants of cylinder bodies of the dielectric cylinders are changed, transmissivity of the dielectric array switch to a electromagnetic wave of a certain wave band is changed, and the switch functions that the electromagnetic wave is allowed to pass through or is cut off are achieved; the dielectric array switch can prevent external electromagnetic waves from passing through, cannot be affected by external electromagnetic wave interference, and has good anti-interference performance, is applicable to communication wave bands and infrared wave bands, is extremely wide in application wavelength coverage, has significant switch performance, and is high in stability.
Owner:HUAZHONG UNIV OF SCI & TECH
Position measuring method for pole-mounted transformer
InactiveCN104567589AThe method steps are simpleReasonable designMechanical measuring arrangementsTransformerPhysics
The invention discloses a position measuring method for a pole-mounted transformer. The position measuring method comprises the steps that 1, a first pilot testing point position is measured, wherein an auxiliary measuring device is adopted for measuring the first pilot testing point position below one side of the pole-mounted transformer, the auxiliary measuring device is installed, the first pilot testing point position is determined and measured, and the distance from a first pilot testing point to a point to be measured is determined; the auxiliary measuring device comprises V-shaped measuring scales and centering rods installed at the bottoms of the V-shaped measuring scales, and the two measuring scales are telescopic rulers; 2, a second pilot testing point position is measured, wherein the auxiliary measuring device is installed, the second pilot testing point position is determined, the second pilot testing point position is measured, and the distance from a second pilot testing point to the point to be measured is determined; 3, the position of the pole-mounted transformer is determined. According to the method, the steps are simple, design is reasonable, operation is simple, safe and reliable, the measurement result is accurate, and the problems that use and operation are not changed, the danger coefficient is high and the measurement result is inaccurate when an existing pole-mounted transformer position measuring method is used can be solved.
Owner:XIAN UNIV OF SCI & TECH
Expansion valve throttling structure and heat pump system containing same
InactiveCN104165483ASimple structureEasy to processMechanical apparatusFluid circulation arrangementEngineeringControl valves
The invention discloses an expansion valve throttling structure and a heat pump system containing the same. The expansion valve throttling structure comprises a first main pipe (10) and a second main pipe (20), a first expansion pipeline (30) and a second expansion pipeline (40), the first expansion pipeline (30) comprises a first heating power expansion valve (31) and a first control valve (32), the first heating power expansion valve (31) and the first control valve (32) are connected in series, the second expansion pipeline (40) comprises a second heating power expansion valve (41) and a second control valve (42), and the second heating power expansion valve (41) and the second control valve (42) are connected in series. The first expansion pipeline (30) and the second expansion pipeline (40) are arranged in parallel; in a refrigeration state, the first expansion pipeline (30) is connected, and the second expansion pipeline (40) is disconnected; in a heating state, the first expansion pipeline (30) is disconnected, and the second expansion pipeline (40) is connected. The expansion valve throttling structure is simple, convenient to machine, stable, reliable and capable of adjusting the throttling function flexibly.
Owner:GREE ELECTRIC APPLIANCES TECH CO LTD OF ZHUHAI
Intelligent management system for injection mold
PendingCN114707903AHigh precisionImprove stability and precisionOffice automationResourcesAutomatic controlElectromagnetic interference
The invention discloses an intelligent management system for an injection mold. Comprising a control module, the control module is electrically connected with a photoelectric coupler, the photoelectric coupler is electrically connected with a driving module, and the driving module is electrically connected with a valve module, a cooling module, an injection molding module, a monitoring module and a temperature control module; the valve module, the cooling module, the injection molding module, the monitoring module and the temperature control module are electrically connected with a pulse module, the pulse module is electrically connected with a processing module, the processing module is electrically connected with an open-loop feedback module, and the open-loop feedback module is electrically connected with a comparison module. The precision of signals is improved through the photoelectric coupler, the signals are not interfered by electromagnetic interference during transmission, automatic control is achieved, the operation automation of the injection mold is improved, feedback adjustment is conducted on the system through the open-loop feedback module and the comparison module, and the operation stability and precision of the system are kept.
Owner:江苏瑞朗汽车科技有限公司
Vibrating type viscometer and liquid viscosity detection method thereof
PendingCN108827831ANo electromagnetic interferenceNot subject to electromagnetic interferenceFlow propertiesLiquid viscosityElectromagnetic interference
The invention provides a vibrating type viscometer and a liquid viscosity detection method thereof. The vibrating type viscometer comprises a fixing part, a vibrating elastic piece, a distance sensor,a driving device, a temperature detection device and a controller, wherein the distance sensor is located in the position, located between a fixed end and a free end of the vibrating elastic piece and close to the free end, on the fixing part, and after the free end of the vibrating elastic piece approaches the distance sensor for preset displacement, the distance sensor is triggered to be switched from one working state to another working state and electrical signals are sent out; the driving device comprises a driving circuit and a main driving body, and the driving circuit is controlled bythe controller and supplies a preset resonant frequency signal to the main driving body; the temperature detection device is used for detecting temperature of a detected sample; the controller is connected with the distance sensor and the driving device and used for keeping vibrational frequency of the driving device constant and collecting time intervals of the electrical signals of the distancesensor and temperature data of the sample. The vibrating type viscometer has the advantages that electromagnetic interference is avoided and a test result is stable.
Owner:叶耀剑
Multi-path 1553B bus optical fiber relay device and multi-path 1553B bus optical fiber relay method
ActiveCN110708119AReduce the numberReduce weightFibre transmissionElectromagnetic repeatersTrunkingElectromagnetic interference
The invention relates to a multi-path 1553B bus optical fiber relay device and a multi-path 1553B bus optical fiber relay method, and belongs to the technical field of computer communication 1553 buses. According to the invention, multi-path 1553B bus relaying is realized. A relaying scheme can be provided for at most four paths of 1553B buses or four redundant 1553B buses, the communication distance is increased, and the number and the weight of cables are reduced. According to the invention, different signal states and half-duplex states of the four 1553B buses can be effectively distinguished and realized, the scheme is simple, and the realizability is strong. According to the invention, the multi-path 1553B bus relay method and the multi-path 1553B bus relay device are realized by onlyusing two optical fibers, so that the method and the device are economical and efficient. According to the invention, a method for realizing multi-path 1553B bus relay by only using two optical fibers is adopted, so that the weight of the cable is reduced, the cable is not interfered by electromagnetic interference, and the transmission distance is greatly increased.
Owner:TIANJIN JINHANG COMP TECH RES INST
A water leakage detection and positioning system and device
ActiveCN102967418BDoes not affect targeting resultsNot subject to electromagnetic interferenceDetection of fluid at leakage pointElectric/magnetic detectionEnvironmental engineeringWater leak
Owner:EAST GRP CO LTD
Device and method for measuring the time after a target missile is intercepted and impacted
ActiveCN107607003BAvoid delayGuaranteed measurement accuracyAmmunition testingFiberMeasurement device
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
A Large-Scale Altered Lithofacies Location Prediction Method for Hydrothermal Ore Deposits
ActiveCN104156601BOvercoming Difficult Spatial Orientation ProblemsNot subject to electromagnetic interferenceSpecial data processing applicationsMetallogenyProspecting
Owner:KUNMING UNIV OF SCI & TECH
LED lamp which can be used in series with thyristor voice control switch
InactiveCN110139428ALow costHigh energy consumptionElectrical apparatusElectroluminescent light sourcesControl functionAC power
The invention discloses an LED lamp which can be used in series with a thyristor sound control switch. The LED lamp includes a step-down capacitor, a current limiting NTC resistor, a sound control function maintaining capacitor, a rectifier, a filter capacitor, an LED group, a necessary safety device and a discharge resistor. The safety device, the step-down capacitor, the current limiting NTC resistor and the sound control function maintaining capacitor are connected to an AC power supply end in series, and the rectifier, the filter capacitor, the discharge resistor and the LED group are connected in parallel. According to the invention, the power frequency AC input is achieved with very low cost to drive LEDs to emit light, the problem that an ordinary LED lamp is incompatible with a large number of existing corridor thyristor voice control switches is solved, the LED lamp can be used for an ordinary 50Hz / 60Hz power frequency AC power supply and is also compatible with a traditionalthyristor voice control switch, and incandescent lamps with high energy consumption and short lives can be completely substituted.
Owner:王欣怡
A device and method for measuring the moment of hitting a target
The invention discloses a measuring device and a measuring method for target-hitting moments. Optical fiber sensors are respectively composed of a single sensing optical fiber, are arranged in a target in a reciprocating mode and cover the target surface area of the target, and the arrangement distance between the optical fiber sensors is smaller than the diameter of an area formed by target hitting of test bullets; optical signals emitted by a light source are transmitted to a photoelectric detector through the optical fiber sensors, converted into electric signals through the photoelectric detector and input into an information collecting and processing module after undergoing signal processing; a time service module obtains the current time information for being used by the information collecting and processing module; when the on-off state signals of the optical fibers are changed to 0 indicating the non-light transmission state from 1 indicating the light transmission state, the time information in the time service module is read and serves as the target-hitting moment. The device and the method can accurately measure the target-hitting moments of the test bullets and can serve as auxiliary analysis means of other range measuring modes, and the extraction efficiency of effective data can be improved. According to the implementation scheme, the method has the advantages that the cost is low, the response speed is high, the measurement accuracy is high, the reliability is high, installing and laying are simple and the anti-jamming capability is high.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Pneumatic steering adjustment mechanism for headlights
ActiveCN104595854BReduce usageNot subject to electromagnetic interferenceOptical signallingRoad vehiclesElectromagnetic interferenceEngineering
Owner:ZHONGSHAN DLAA AUTO PARTS INDAL
A Measuring Device of High Speed Impact Damage Time
The invention discloses a high-speed impact damage time measuring device and method. The device comprises a fluorescent fiber sensor, a coupler, a photoelectric detector, a signal preprocessing and identifying module, a standard time acquisition module, a signal acquisition and processing module that are successively connected. The photoelectric detector is used for converting the optical signal output by the fluorescent fiber sensor and coupled by the coupler into an electrical signal; the signal preprocessing and identifying module is used for preprocessing and identifying the electrical signal and outputting the identification result; the signal acquisition and processing module is used for fusing the counter value and the standard time output by the standard time acquisition module according to the identification result, correcting the error, and calculating to obtain the high-speed impact damage time. The scheme can be applied to high-speed impact damage parameter measurement suchas weapon attack prevention and space debris measurement, and can meet the requirements of special working conditions of high-speed impact damage measurement.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Liquid core angle sensor
Owner:ZHEJIANG UNIV
External temperature sensing module, temperature sensing method thereof, and temperature sensing system
ActiveCN104977086BNot subject to electromagnetic interferenceRadiation pyrometryInfraredAudio power amplifier
The invention discloses an external temperature sensing module, a temperature sensing method and a temperature sensing system thereof. The external temperature sensing module comprises a four-pole joint, an infrared sensor and a microprocessor. The four-pole joint is provided with an output port, a grounding port, a first input port and a second input port. The infrared sensor comprises an infrared ray sensing unit, an amplifier, an analog-to-digital converter, a shielding unit and a room temperature sensing unit. The infrared ray sensing unit is electrically connected with the amplifier. The amplifier is electrically connected with the analog-to-digital converter for outputting the analog digital converted value of an infrared signal. The microprocessor is electrically connected between the four-pole joint and the infrared sensor. The room temperature sensing unit is electrically connected with the microprocessor for outputting a measured value of the room temperature.
Owner:RADIANT INNOVATION INC
A front-end signal synthesis module for accelerator low-level control system
ActiveCN111953304BGuaranteed coherenceCoherence hasMulti-frequency-changing modulation transferenceLocal oscillator signalIntermediate frequency
Owner:HUAZHONG UNIV OF SCI & TECH
A microfluidic chip flow rate sensor based on micro-nano optical fiber
ActiveCN111229345BAvoid interferenceInterference will not be affectedLaboratory glasswaresFluid speed measurementThin membraneEngineering
Owner:ZHEJIANG UNIV
Pneumatic steering adjusting mechanism of car lamp
ActiveCN104595854AAvoid Electronic Control CircuitsElectromagnetic interference will not generateOptical signallingRoad vehiclesFixed frameEngineering
The invention discloses a pneumatic steering adjusting mechanism of a car lamp. The pneumatic steering adjusting mechanism comprises a reflecting cover, a light transmitting mirror, a mounting shaft, a lamp holder, an adjusting guide column, a guide column fixed frame, an air conveying pipe and a valve. The reflecting cover is of a U-shaped structure, and the light transmitting mirror is fixed to an opening of the reflecting cover; the mounting shaft is located in the reflecting cover, the lamp holder is fixedly arranged in the reflecting cover, and the mounting shaft is movably sleeved with the lamp holder; the adjusting guide column is fixedly connected with the arc-shaped end of the reflecting cover and is in a circular arc shape, and the round center of the adjusting guide column is located at the axis of the mounting shaft; the guide column fixed frame is provided with an arc-shaped airtight sliding groove matched with the adjusting guide column; and one end of the air conveying pipe is communicated with the airtight sliding groove, and the other end of the air conveying pipe is led out and is connected with the valve. The pneumatic steering adjusting mechanism of the car lamp achieves the steering adjusting function of the car lamp in a pneumatic manner, so that an electronic control circuit is prevented from being used. Electromagnetic interference does not exist, and the mechanism cannot generate electromagnetic interference.
Owner:ZHONGSHAN DLAA AUTO PARTS INDAL
A visible light band silicon nitride beam deflection chip
The present invention provides a visible light band silicon nitride beam deflection chip. The chip comprises a silicon based substrate, a silicon dioxide buffer layer, a silicon dioxide cladding layerand a silicon nitride waveguide-based core layer; the silicon dioxide buffer layer is disposed on the silicon base substrate; the silicon dioxide cladding layer is attached to the silicon dioxide buffer layer; the core layer comprises a light beam splitting unit, a first curved waveguide, a second curved waveguide, a thermo-optical phase shifter, and an outgoing waveguide array; the light beam splitting unit, the first curved waveguide, the second curved waveguide and the outgoing waveguide array are arranged in the silicon dioxide cladding layer and are located on the silicon dioxide bufferlayer; the thermo-optical phase shifter is arranged on the silicon dioxide cladding layer; the light beam splitting unit includes a plurality of silicon nitride waveguide-based beam splitters; and theworking bandwidth of the beam splitters ranges from 480 nm to 645 nm. The chip of the invention is based on silicon nitride. The chip has the advantages of small size, compact structure and simple processing, large manufacturing tolerance, high product yield, and capability of realizing uniform beam splitting, phase modulation and beam deflection of visible light.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Time measuring device and method after target projectile is intercepted and impacted
ActiveCN107607003AAvoid delayGuaranteed measurement accuracyAmmunition testingFiberMeasurement device
The invention discloses a time measuring device and method after a target projectile is intercepted and impacted. The time measuring device comprises a light emitting unit, an optic fiber sensing network, a photoelectric detecting unit, a data collecting and processing unit and a calculating module; the light emitting unit emits a light signal; the optic fiber sensing network transmits the light signal to the photoelectric detecting unit; the photoelectric detecting unit converts the light signal into an electrical signal and outputs the light-transmission state; according to the light-transmission state, the data collecting and processing unit reports the data frame matched with the light-transmission state in the fixed time interval Tau; and the survival time T1 and the hit moment T2 ofthe target projectile in the collision process are calculated according to the type and quantity of the data frame by the calculating module. According to the time measuring device and method after the target projectile is intercepted and impacted, calculation of the survival time and the hit moment of the target projectile are realized, and the time measuring device and method has the advantagesof being wide in frequency bandwidth, free from electromagnetic wave interference, small in size, small in weight, high in winding, resisting in corrosion and low in cost, measuring for the target projectile in the interception process is complete and comprehensive, and supporting for inversion of the damage process is provided.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
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