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147results about How to "No crosstalk" patented technology
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Process for imagewise opening and filling color display components and color displays manufactured thereof
InactiveUS6972893B2Maintain structural integrityWider materialStatic indicating devicesElectrographic processes using photoelectrophoresisDisplay deviceEngineering
Owner:E INK CALIFORNIA
Process for imagewise opening and filling color display components and color displays manufactured thereof
InactiveUS7385751B2Wider materialWider processElectrographic processes using photoelectrophoresisElectrographic process apparatusDisplay deviceEngineering
Owner:E INK CALIFORNIA
Process for imagewise opening and filling color display components and color displays manufactured thereof
InactiveUS6914714B2Easy and efficient to prepareReduce processing costsStatic indicating devicesElectrographic processes using photoelectrophoresisEngineeringDisplay device
Owner:E INK CALIFORNIA
Antenna module and mobile terminal
ActiveCN110247160AImprove isolationGuaranteed performanceSimultaneous aerial operationsAntenna supports/mountingsPower flowComputer terminal
The application provides an antenna module and a mobile terminal. The antenna module comprises at least a first antenna and a second antenna. The first antenna includes a first feed point and a connected first radiator. The second antenna includes a second feed point and a connected second radiator. A gap is sandwiched between the first radiator and the second radiator. A first ground wire shared by the first antenna and the second antenna is disposed at one end of the second radiator close to the gap. A second ground wire is disposed at one end of the second radiator away from the gap. Further, the first ground wire and the second ground wire are separately connected to the ground. It can be seen from the above description that only one gap is sandwiched between the end portions of the radiators of the first antenna and the second antenna, but since the currents excited by the first antenna and the second antenna are orthogonally complementary, the currents on the ground of the first antenna and the second antenna cannot suffer crosstalk, thereby improving the isolation of the first antenna and the second antenna and ensuring the performance of the first antenna and the second antenna during communication.
Owner:HONOR DEVICE CO LTD
Ultra-large capacity time division and wavelength division fiber grating sensing system and query method thereof
ActiveCN102901525AMeet capacity needsPrecise positioningConverting sensor output opticallyFiberSystem capacity
The invention relates to an ultra-large capacity time division and wavelength division fiber grating sensing system and a query method of the fiber grating sensing system. The ultra-large capacity time division wavelength division fiber grating sensing system consists of a broadband light source, a modulation module, a circulator, a fiber Bragg grating sensing array, a sampling module, a wavelength demodulation instrument and a data processing computer, wherein the modulation module and the sampling module comprise a SOA high-speed photoelectric switch respectively and are driven by different channels of the same signal generator, and a phase difference exists between two drive pulses; and the fiber Bragg grating sensing array can be composed of identical fiber gratings or multi-wavelength fiber gratings. With the adoption of a technology combining a time division multiplexing with a wavelength division multiplexing, tens of thousands of gratings can be engraved on an optical fiber. The ultra-large capacity time division and wavelength division fiber grating sensing system has characteristics of large system capacity, high response speed, good expandability, high flexibility, good stability, low cost and the like, can perform dynamic measurement and static measurement at the same time, and can satisfactorily meet requirements of internet of things on information capacity.
Owner:安徽龙联智能光电有限公司
Polarization multiplexing holographic imaging method based on transmission type all-medium metasurface
The invention belongs to the technical field of micro-nano optics, polarization optics and optical holographic, and discloses a polarization multiplexing holographic imaging method based on a transmission type all-medium metasurface. A response main wavelength <lambda> is determined; geometric parameters of a unit structure are determined; a GS phase recovery algorithm is adopted to obtain phase distribution of the unit structure responding to the main wavelength; the pixel point of each element is expanded into a 2*2 array by adopting a Dammann grating method, and the obtained each pixel unitcomprises information responding to horizontal polarized light and information responding to vertical polarized light; and a synthesized silicon nano-antenna array is irradiated by horizontal polarized light and vertical polarized light with the wavelength of <lambda>, and different holographic images are reconstructed. According to the method, phase modulation of 0-2 <pi> can be realized only bychanging the size of the short axis of the silicon nano-antenna, and an embossment phase modulation structure of any step number can be realized equivalently; and a simple process, high processing error tolerance and quite high stability and reliability are achieved.
Owner:UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
Optical film, polarizing plate and image display device using the same
ActiveCN103364845ANo reflectionImprove image qualitySynthetic resin layered productsPolarising elementsPhase differenceRefractive index
There is provided an optical film including: a transparent support; an optically anisotropic layer on the outermost surface at one side of the transparent support; a hardcoat layer; and a low refractive index layer, wherein the hardcoat layer and the low refractive index layer are provided at the other side of the transparent support, the transparent support, the hardcoat layer, and the low refractive index layer contains an organic fine particles A having a specific particle size, an organic fine particles B having a specific particle size, and a binder such that a refractive index of 1.20 to 1.40 and average film thickness of 50 to 120 nm, a content of the inorganic fine particles B is appropriately controlled, and arithmetic mean roughness Ra of the optical film surface at a side having the low refractive index layer is a specific value.
Owner:FUJIFILM CORP
Improving the detection terminal of the platform area topology identification efficiency and line loss accuracy
ActiveCN109256866AQuality improvementRealize measurementCircuit arrangementsTopology identificationTopology information
The invention discloses a detection terminal for improving the efficiency of station area topology identification and the precision of line loss, comprising a management terminal, a topology identification terminal and a handheld PDA device, wherein, the topology identification terminal is used for acquiring electric energy and topology data of a branch access point and uploading the power and topology data to the management terminal; A handheld PDA device for transmitting binding information between the topology identification terminal and the branch access point to the management terminal; The management terminal is configured to draw a topology map according to the received power and topology data and the binding information between the topology identification terminal and the branch access point. The invention solves the problem of large fluctuation of line loss rate detection in the prior art, In order to improve the efficiency of topology identification and the precision of lineloss, the power frequency communication technology is used to measure, collect, store and transmit the topology information of low voltage distribution, which improves the high quality and high efficiency management of power supply enterprises to customers.
Owner:CHENGDU POWER SUPPLY COMPANY OF STATE GRID SICHUAN ELECTRIC POWER
LCD and common voltage driving method
ActiveCN101344657AQuality improvementSpike CancellationStatic indicating devicesCapacitanceVoltage generator
Owner:INNOCOM TECH (SHENZHEN) CO LTD +1
Reflective aluminum nanorod array and method for realizing color hologram by using same
ActiveCN105068396ASimple processGood processing error toleranceNanoopticsInstrumentsDielectric substrateMagnesium fluoride
Owner:CHINA INFORMATION COMM TECH GRP CORP
Micro-fluidic chip and chip assembly
PendingCN107541452AEasy to controlRealize integrationBioreactor/fermenter combinationsBiological substance pretreatmentsNucleic acid detectionProcess engineering
The invention discloses a micro-fluidic chip and a chip assembly, and relates to the technical field of microfluidics. Integration and fully integrated operation of sample preparation and amplification separation in nucleic acid detection can be realized, operation of the nucleic acid is facilitated, and the nucleic acid detection efficiency is improved. The micro-fluidic chip comprises a liquid storage unit, an extraction and amplification unit as well as a waste liquid recovering unit, wherein the liquid storage unit is used for realizing sequential sampling of liquid reagents; the extraction and amplification unit is used for performing amplification and separation to obtain a to-be-detected sample; the waste liquid recovering unit is used for recovering the detection waste liquid; theliquid storage unit comprises a plurality of liquid storage devices and a first circulating pipeline communicated with the liquid outlet of each liquid storage device; a first control piece is arranged between each liquid outlet and the first circulating pipeline; the first control piece is used for controlling the breakover state of the liquid outlet; when any one liquid storage device is in a pressurizing state, the corresponding first control piece is in an opening state and the rest first control pieces are in a closed state. The micro-fluidic chip and the chip assembly, which are providedby the invention, are applied to nucleic acid detection.
Owner:HANGZHOU ZIJING BIOLOGY CO LTD
LCD device and its public voltage drive method
InactiveCN101311781ANo crosstalkPublic voltage stabilityStatic indicating devicesVoltage generatorPressure wire
The invention relates to a liquid crystal display and a drive method of public voltage of the liquid crystal display. The liquid crystal display comprises a liquid crystal display panel, a public voltage generator and a public voltage compensator. The liquid crystal display panel comprises a public electrode, a first public pressure wire and a second public pressure wire. The public voltage compensator comprises an input end and an output end. The public voltage generator is connected with the public electrode by the first public pressure wire. The public voltage compensator is connected with the public electrode by the second public pressure wire. The public voltage generator is used for providing the liquid crystal display panel with the public voltage. The public voltage compensator is used for providing the liquid crystal display panel with compensated public voltage according to the actual public voltage of the first public pressure wire.
Owner:INNOCOM TECH SHENZHEN +1
High resolution autostereoscopic display apparatus with interlaced image
InactiveCN101356832AShort switching timeSimple structureSteroscopic systemsInterlaced videoLenticular lens
An autostereoscopic display apparatus includes a backlight unit, a polarizing plate disposed in front of the backlight unit; a display panel displaying a left eye image and a right eye image by interlacing pixel lines of the left and right eye images alternately and sequentially; a lenticular lens sheet, disposed between the polarizing plate and the display panel, separating light emitted from the backlight unit into a left eye zone and a right eye zone; and a polarization switch controlling a polarization direction of light proceeding towards the left eye viewing zone so that light is incident on pixel lines of the display panel displaying the left eye image and a polarization direction of light proceeding towards the right eye viewing zone so that light is incident on pixel lines of the display panel displaying the right eye image, in synchronization with a vertical scanning time of the display panel.
Owner:SAMSUNG ELECTRONICS CO LTD
Speaker box and electronic equipment with same
InactiveCN106162459AReduce resonanceNo crosstalkElectrical transducersLoudspeakersIntermediate frequencyEngineering
The invention provides a speaker box which comprises an upper cover, a lower cover forming an accommodating space with the upper cover and a speaker body accommodated in the accommodating space. The speaker body comprises a vibrating diaphragm, the upper cover and the vibrating diaphragm enclose to form a front sound cavity, a sound channel used for guiding sound generated from the speaker body is further arranged in the speaker box, and the front sound cavity and the sound channel commonly form a front cavity; the speaker box further comprises a leakage structure, the leakage structure comprises a sealing cover arranged above the upper cover and a leakage hole penetrating the upper cover, the upper cover and the sealing cover enclose to form a cavity, and the leakage hole is communicated with the front cavity and the cavity. The invention further provides electronic equipment with the speaker box. Compared with the prior art, the speaker box is low in intermediate frequency distortion, weak in high-frequency resonant, low in radio-frequency component, good in sound feeling and free of sound crosstalk from sound holes.
Owner:AAC TECH PTE LTD
Fiber array dynamic infrared scene generation apparatus based on MEMS technology
InactiveCN102520334ASimple processImprove controllabilitySolid-state devicesFluid speed measurementOptical pathFiber array
The invention relates to a fiber array dynamic infrared scene generation apparatus based on a MEMS technology and belongs to a dynamic infrared scene generation technology field. By using the apparatus of the invention, conversion from a visible light image to an infrared image can be realized. Purposes of greatly increasing a performance index of the dynamic infrared image generation apparatus and reducing cost can be reached. The apparatus comprises: a substrate, a fiber array formed by pixel columns and a visible light absorption infrared radiation layer of a pixel column top. A substrate material can use transparent glasses or silicon according to different optical path designs. The fiber array is made on the substrate by using a MEMS technology. The pixel columns forming the fiber array are mutually independent and can be taken as an imaging unit. A visible light absorption infrared radiation film is made on the each pixel column top. The visible light absorption infrared radiation film absorbs energy of the incident visible light image, radiates outwards the infrared light after the temperature is increased and generates the infrared image corresponding to the visible light image.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +1
Image sensor and forming method thereof
ActiveCN103337507ALow working voltageReduce process stepsRadiation controlled devicesPhotodiodeComputer science
The invention relates an image sensor and a forming method thereof. The image sensor comprises a semi-conductor substrate, a plurality of pixel units in a pixel array area and logic circuit devices in a peripheral device area, wherein the semi-conductor substrate comprises the pixel array area and the peripheral device area; every two adjacent pixel units are isolated from each other through a first shallow groove isolation structure; every two adjacent logic circuit devices are isolated from each other through a second shallow groove isolation structure; the first shallow groove isolation structures are deeper than the second shallow groove isolation structures. As the pixel units are isolated from one another only by the deeper first shallow groove isolation structures, and a P-type well region is not needed to be formed, processing steps are reduced; as the first shallow groove isolation structures are mainly used for isolating photoelectrons produced by photodiodes from crosstalk, and the working voltage corresponding to transistors in the pixel units is lower, and the first shallow groove isolation structures can effectively conduct electrical isolation even the first shallow groove isolation structures have bubbles.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP
A realization method of a self-defined protocol based on a protocol analysis framework
The invention provides a method and a system for realizing a user-defined protocol based on a protocol analysis framework. The configuration method comprises the following steps: S1, loading a configuration file; S2, loading a common protocol; Step S3, establishing an association relationship among the protocol name, the port number and an analysis function, and storing the association relationship into a global hash table, the analysis function being a protocol analysis function on a transmission layer; S4, acquiring a protocol data message needing to be analyzed; S5, decomposing the protocoldata message needing to be analyzed, and extracting one or more port numbers from the protocol data message; S6, searching in a global hash table according to the extracted one or more port numbers,and if an analytic function associated with the one or more port numbers is found, executing the step S5; And S7, analyzing the protocol data message needing to be analyzed by utilizing the found analysis function to obtain an analysis result.
Owner:HANGZHOU GUYI NETWORK TECH CO LTD
Loudspeaker box and electronic device with the loudspeaker box
InactiveCN106101956AReduced front chamber resonanceReduce high-order harmonic componentsElectrical transducersLoudspeakersIntermediate frequencyDistortion
The invention provides a loudspeaker box and an electronic device with the loudspeaker box. The loudspeaker box comprises an upper cover with a top wall, a lower cover, a single loudspeaker contained between the upper cover and the lower cover, and a leakage structure. The single loudspeaker comprises vibration diaphragm. The upper cover and the vibration diaphragm form a front voice chamber. The loudspeaker box is also equipped with a voice outlet channel communicated with the front voice chamber. The front voice chamber and the voice outlet channel form a front chamber. The leakage structure comprises a sealing cover and a leakage pipeline arranged on the top wall. A hollow chamber is enclosed by the upper cover and the sealing cover. The leakage pipeline is communicated with the front chamber and the hollow chamber. The leakage pipeline comprises a first opening end communicated with the hollow chamber, a second opening end communicated with the front chamber, and a connection channel connected with the first opening end and the second opening end. Compared with the prior art, the loudspeaker box provided by the invention has the advantages that the intermediate frequency distortion is relatively low, the high frequency resonance is reduced, the resonance peak is reduced, the high frequency components are reduced, the sense of listening gets better, and there is no voice crosstalk at a voice outlet hole.
Owner:AAC TECH PTE LTD
Glass-free three dimensional display apparatus and control method of the same
The invention discloses a glass-free three dimensional display apparatus and a control method of the same. The glass-free three dimensional display apparatus includes a display panel, a liquid crystal grating, a processor and an image collector, wherein the display panel is used for outputting frames; the liquid crystal grating is arranged between the display panel and a viewer for separating the visual frames of double eyes of the viewer; the image collector is used for acquiring the first current viewed information and the second current viewed information, and sending the first current viewed information and the second current viewed information to the processor; and the processor is used for adjusting the width and / or position of the light transmission area of the liquid crystal grating according to the first current viewed information, and adjusting the output frame of the display panel according to the second current viewed information and the adjusted width and / or position of the light transmission area of the liquid crystal grating. The glass-free three dimensional display apparatus realizes that crosstalk does not occur in the 3D image viewed by the viewer when the position of the viewer is changed, and can realize the anti-peeping function at the same time.
Owner:BOE TECH GRP CO LTD +1
Carbon monoxide and methane integral optical fiber sensing measuring system
ActiveCN1888864ARealize simultaneous measurementSimultaneous measurement is convenientColor/spectral properties measurementsSignal conditioningPhotoelectric conversion
This is an integral optical fiber sensor and testing system using for the carbon monoxide and methane. It composes of first DFB laser source, second DFB laser source, first waveform generator, second waveform generator, first wavelength select modulator, second wavelength select modulator, optical fiber coupling implement, sensor detection head, photoelectric conversion module, signal modulate data collection module and microprocessor. The first waveform generator acts on first wavelength select modulator, the latter controls the first DFB laser source and it connects with one import ending of coupling implement by optical fiber. The second waveform generator acts on second wavelength select modulator, the latter controls the second DFB laser source and it connects with another import ending of coupling implement by optical fiber. The fan-out of coupling implement connects with sensor detection head and the latter connects with photoelectric conversion module. The photoelectric conversion module connects with signal modulate and data collection module by lead and the latter connects with microprocessor by lead. The microprocessor controls the first wavelength selecting and modulator, second wavelength selecting and modulator and display modulator.
Owner:WUHAN WUTOS
Memory array and electronic equipment
ActiveCN102768855ANo crosstalkIncreased active area widthRead-only memoriesProgrammable read-only memoryParallel computing
The invention discloses a memory array and electronic equipment. The memory array comprises a plurality of memory units arranged in an array way, wherein each memory unit comprises a plurality of parallel bit lines and word lines which are arranged in parallel on the bit lines and vertical to the bit lines, each bit line is connected with the source electrode or the drain electrode of each memory unit in a column direction, each word line is connected with the grid electrode of each memory unit in a row direction, the grid electrode of each memory unit comprises double grid structures and a selection grid arranged between the double grid structures, and the double grid structures are arranged in parallel on a substrate. The electronic equipment is equipped with the memory array. The memory array and the electronic equipment are designed for an electric erasable programmable read-only memory, so that crosstalk can be prevented from generating on other memory units when operation is carried out on a selected memory unit.
Owner:SHANGHAI HUAHONG GRACE SEMICON MFG CORP
Camera and antenna integrated structure and working method thereof
InactiveCN105742786ASimple structureReduce manufacturing costAntenna supports/mountingsCamera moduleComputer science
The invention discloses a camera and antenna integrated structure and a working method thereof. The structure comprises a camera module and an antenna, wherein a magnetic conduction material is arranged outside the camera module, the antenna is arranged on the magnetic conduction material. A first method comprises the following steps of judging whether the camera module is opened or not when the antenna is opened, if yes, closing the camera module and opening the antenna, otherwise directly opening the antenna; and judging whether the antenna is opened or not when the camera module is opened, if yes, completing operation, otherwise opening the camera module. Or a second method comprises the following steps of judging whether the antenna is opened or not when the camera module is opened, if yes, closing the antenna and opening the camera module, otherwise directly opening the camera module; and judging whether the camera module is opened or not when the antenna is opened, if yes, completing operation, otherwise opening the antenna. The camera and the antenna are integratedly designed, and the camera and antenna integrated structure is compact and is low in cost.
Owner:SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD
Process for imagewise opening and filling color display components and color displays manufactured thereof
InactiveUS20060132897A1Reduce processing costsFew defectNon-linear opticsOptical elementsDisplay deviceEngineering
Owner:E INK CALIFORNIA
Plastic optical fiber network electricity checks meter system
InactiveCN102314765ALow priceSave copper resourcesNon-electrical signal transmission systemsElectromagnetic transmissionEngineeringElectric power
The invention provides a plastic optical fiber network electricity checks meter system, and belongs to the field of power line information transmission. The checks meter system provided by the invention has strong anti-electromagnetic interference and nuclear radiation resistance as well as reliable performance; collected data has strong real-time performance, and low cost and high speed transmission of data are realized; the plastic optical fiber network electricity checks meter system is composed of electricity meters, a meter reading module, plastic optical fiber, a plastic optical fiber network switch and a data processing center; The signal flow direction of the checks meter system is as follows: an optic transmitter of the meter reading module converts an electricity meter signal to a network optical signal; the optical signal is coupled to the plastic optical fiber; an optical receiver of the meter reading module receives signals and reduces the optical signal to a network electrical signal; the plastic optical fiber network switch is used for data processing; and the data processing center is used to process data so as to complete the whole process of meter reading. The checks meter system provided by the invention has excellent anti-electromagnetic interference performance, strong security, high sensitivity and small volume, is simple to prepare, requires low cost, and has waterproof and moistureproof properties as well as long service life.
Owner:CHINA ELECTRIC POWER RES INST +1
Spatial light modulator and holographic recording/reproducing apparatus
InactiveCN1542496AImprove performanceNo crosstalkParticular environment based servicesOptical beam sourcesSpatial light modulatorTransmittance
Owner:TDK CORPARATION
Multiplexer and demultiplexer, transmitter and receiver, optical fiber communication system and methods
ActiveCN103856282AImprove frequency band utilizationImprove transmission capacityMultiplex system selection arrangementsWavelength-division multiplex systemsMultiplexingMultiplexer
The invention provides a multiplexer and a demultiplexer, a transmitter and a receiver, periodic orthogonal waveform signal generation units, an optical fiber communication system and corresponding methods. The multiplexer that is used for multiplexing a plurality of user signals comprises: a plurality of periodic orthogonal waveform signal generation units, which are configured to generate a plurality of periodic orthogonal waveform signals in a paired orthogonal mode; an electric modulator, which is configured to respectively modulate a plurality of user signals to the plurality of periodic orthogonal waveform signals; and an electric combiner, which is configured to mixing the plurality of modulated signals into a single signal. According to the invention, the periodic orthogonal waveform signals in a paired orthogonal mode are used as basic multiplexing units and the different user signals are respectively modulated to the periodic orthogonal waveform signals; and the modulated signals are mixed into the single signal so as to generate an optical signal, so that signal transmission in an optical fiber can be realized conveniently. Therefore, the communication transmission capacity and the bandwidth utilization efficiency can be substantially improved.
Owner:WUHAN POST & TELECOMM RES INST CO LTD
Display gray scale binding point voltage adjusting method, display and medium
PendingCN113674710ANo crosstalkImprove crosstalk phenomenonStatic indicating devicesDisplay deviceEngineering
The invention discloses a display gray scale binding point voltage adjusting method, a display and a medium. The method comprises the following steps: adjusting gamma binding point voltage of each preset gray scale for multiple times; after the voltage of the gamma binding point is adjusted each time, obtaining the actual brightness value of the display; when the actual brightness value is matched with a target brightness value corresponding to a target gamma value of a preset gray scale, acquiring a crosstalk value corresponding to the current binding point voltage; when the crosstalk value is smaller than a preset value, recording the current binding point voltage as a reference binding point voltage; and determining a target binding point voltage corresponding to each preset gray scale according to the reference binding point voltage of each preset gray scale. The technical problem of image crosstalk of the display is solved, and the image crosstalk phenomenon of the display is improved.
Owner:BEIHAI HKC OPTOELECTRONICS TECH CO LTD +1
Optical fiber simulated Raman scattering effect based optical neuron and establishment method thereof
InactiveCN103178901ASimple structureNovel and reasonable designFibre transmissionElectromagnetic transmittersInformation processingCoupling
The invention discloses an optical fiber simulated Raman scattering effect based optical neuron and an establishment method thereof. The optical neuron comprises external optical transmitters, a first local optical transmitter, a second local optical transmitter, a subtracter, a combiner, a third optical fiber, an optical filter, a first optical-electrical converter, a second optical-electrical converter and a laser diode, wherein the third optical fiber performs power cumulative summing operation by non-linear effect of simulated Raman scattering. The method includes: selecting the external optical transmitters and the first local optical transmitter, performing coupling output by the combiner, selecting the third optical fiber for power cumulative summing operation, selecting the optical filter, selecting the first optical-electrical converter, selecting the second local optical transmitter and the second optical-electrical converter, constructing the subtracter, and selecting the laser diode for converting electrical signals to optical signals. The optical neuron is novel and reasonable in design, convenient to implement, low in cost, power consumption and noise, rapid in information processing, high in expandability and practicality, good is using effect and convenient to popularize and use.
Owner:XIAN UNIV OF POSTS & TELECOMM
Optical module
The embodiment of the invention discloses an optical module. One side of a shell is provided with an optical receiving adapter and an optical transmitting adapter and the shell is internally providedwith a laser array, a transmitting-end optical multiplexing module and a first displacement prism; one end of a PCB is arranged in the shell, and the laser array is electrically connected with the upper surface of the PCB; the lower surface of the PCB is provided with an optical receiver array; the first displacement prism propagates light from the optical receiving adapter to the lower surface ofthe PCB, and the light then passes through a receiving-end optical multiplexing module and is reflected to the optical receiver array through a reflecting surface; the laser array and the transmitting-end optical multiplexing module are arranged in the shell and corresponding to the upper surface area of the PCB; the received light is propagated to the lower surface of the PCB through the first displacement prism. A component at the receiving end and a component at the transmitting end are located at different sides of the PCB, when the optical module works, no crosstalk happens between the component at the receiving end and the component at the transmitting end, and according to the above layout mode, the utilization ratio of the shell is improved.
Owner:HISENSE BROADBAND MULTIMEDIA TECH
Plastic optical fiber electric power meter reading system
InactiveCN102394003ALow priceSave copper resourcesNon-electrical signal transmission systemsElectric power systemConfidentiality
The invention provides a plastic optical fiber electric power meter reading system, and belongs to the field of transmission of digital information on electric power lines. The plastic optical fiber electric power meter reading system has strong electromagnetic interference resisting and nuclear radiation resisting capabilities as well as reliable performance, and achieves low cost and high-speed transmission of data. The plastic optical fiber intelligent electric power meter reading system is composed of an optical transmitter, an optical receiver, plastic optical fiber, a data joint device, a data concentrator and a plurality of passive devices, wherein an electric meter signal (such as a Transistor-Transistor Logic (TTL) level signal) of the optical transmitter drives an optical signal, the optical signal is coupled to the plastic optical fiber and transmitted to the optical receiver through the plastic optical fiber, the light receiver restores the optical signal to the electric signal (such as a TTL level signal), and data processing is carried out by the data concentrator to finish the whole process of POF (plastic optical fiber) intelligent electric power meter reading. The meter reading system has the advantages of excellent electromagnetic interference resistance, high reliability, strong confidentiality, high sensitivity, smaller volume, simpleness in preparation, low cost, waterproof and moisture-proof properties and long service life.
Owner:CHINA ELECTRIC POWER RES INST +1
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