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49results about How to "Guaranteed Electromagnetic Compatibility" patented technology
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On-board electronic cabinet
InactiveCN103889179ASimple structureReduce weightMagnetic/electric field screeningCooling/ventilation/heating modificationsRear quarterAviation
The invention provides an on-board electronic cabinet applied to the technical field of aviation electronic products. A front panel (1), a rear cover plate (2), an upper cover plate (3), a base plate (4), a left side plate (5) and a right side plate (6) of the on-board electronic cabinet form a hollow square frame structure. The inner surfaces of the front panel (1), the rear cover plate (2), the upper cover plate (3), the base plate (4), the left side plate (5) and the right side plate (6) are respectively provided with an oxidation layer (7) which is formed through conductive oxidation treatment. The outer surfaces of the front panel (1), the rear cover plate (2), the upper cover plate (3), the base plate (4), the left side plate (5) and the right side plate (6) are respectively coated with an enamel paint layer (8). According to the on-board electronic cabinet, the structure is simple, the electromagnetic compatibility is guaranteed, the resistance to electromagnetic interference is improved, the heat dissipation effect is improved, it is guaranteed that the on-board electronic cabinet can be operated under severe flight conditions, and work reliability and the adaptability of the on-board electronic cabinet and an airplane where the on-board electronic cabinet is carried are improved.
Owner:AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD
Multi-channel compound heat radiating sealing chassis
InactiveCN102892270AIncrease the heat exchange areaImprove heat transfer efficiencyMagnetic/electric field screeningHermetically-sealed casingsHigh densityWeak current
The invention relates to a multi-channel compound heat radiating sealing chassis which is characterized in that outer sealing plates are arranged on two sides of a chassis frame, an upper cover plate and a lower cover plate are arranged on and under the chassis frame, two ends of the chassis frame are provided with a front panel and a rear sealing plate, a fan is arranged on the rear sealing plate, a connector frame is arranged inside the chassis frame, a separation plate for separating a strong current region and a weak current region is arranged on the connector frame, a side wall heat radiating fin is arranged on the connector frame in the strong current region, an installing plate is arranged on one side of the weak current region, which is positioned on the rear sealing plate, an inner fan is arranged on the installing plate, an inner separation plate is arranged between the inner fan and the rear sealing plate, heat radiating fins are arranged on two ends of the inner separating plate; and two side surface heat exchange plates are arranged on two sides of the chassis frame and positioned between the chassis frame and the outer sealing plates. According to the invention, by adopting a method of combining conduction with secondary forced heat radiation, the problem of heat radiation of a high-density and large-power sealing electronic device can be effectively solved.
Owner:CNGC INST NO 206 OF CHINA ARMS IND GRP
Tail clamping and locking mechanism of low-frequency electric connector
ActiveCN101702477AEasy to disassembleReduced service lifeCoupling device detailsElectricitySurface layer
The invention relates to a tail clamping and locking mechanism of a low-frequency electric connector, comprising a protective line sleeve and a cable cover, wherein the protective line sleeve is connected with a plug or a socket of the electric connector; the cable cover is matched with the protective line sleeve and locks a cable; a contact line of the cable is welded with a pin of the plug or the socket connected with the protective line sleeve; two or more line clamping lamellas with excircle surfaces as conical surfaces are arranged between the protective line sleeve and the cable cover, and the excircle conical surfaces of the two or more line clamping lamellas face to the protective line sleeve or the cable cover and are in a symmetrical or uniformly distributing cable clamping state. The invention has the advantages of large line clamping area, high friction force between the line clamping lamellas and the cable, drag resistance and high twisting resistance; in addition, the line clamping lamellas can meet the requirement for clamping cables with large diameter differences according to the diameter design of the cables without deformation when used for a long time, is difficult to damage cable surface layers and shielding layers and has the advantages of convenient assembly and disassembly, repeated use, low cost and long service life.
Owner:CHINA NORTH IND GRP HANGLIAN TECH CO LTD
Pure electric automobile energy system structure and vehicle energy storage control system thereof
ActiveCN102673422AImprove the level of electronic control technologyGuaranteed Electromagnetic CompatibilityVehicular energy storageElectric propulsionElectrical batteryEngineering
The invention discloses a pure electric automobile energy system structure and a vehicle energy storage control system thereof, wherein the energy system structure comprises a first charging plug and a second charging plug, wherein the first charging plug is connected with a first battery pack, while the second charging plug is connected with a second battery pack; and the first battery pack and the second battery pack are respectively composed of a plurality of batteries connected in series. The energy system structure is characterized in that each battery pack is controlled by controlling a power device with a one-way / two-way switch, so that battery packs discharge simultaneously, and the discharge processes of the battery packs are independent with one another without causing reverse charging; and the discharge of one or more battery packs can be realized by controlling the power device by using an entire vehicle electric control unit; and therefore, an individual battery of each battery pack are monitored. Furthermore, the pure electric automobile energy system structure maximally reduces the charging time, reduces the charging current, and prolongs the service life of an entire vehicle high voltage power consuming component and the service life of each battery pack; and the structure is capable of reducing the entire vehicle voltage so as to guarantee the electromagnetic compatibility of an entire vehicle; and as a result, the electric control technical level of the entire vehicle is greatly improved.
Owner:CHINA AUTOMOTIVE TECH & RES CENT
Electronic endoscope
ActiveCN104812290AEfficient configurationGuaranteed Electromagnetic CompatibilitySurgeryEndoscopesOrthogonal coordinatesEngineering
An electronic endoscope (1) is provided with the following: a plurality of metal cylinder members (51, 55, 59, 63) that are connected by electrical conduction so as to electromagnetically shield an internal space formed in an insertion part (2); a treatment tool channel (48) in which the center (O1) is disposed in any one quadrant of an orthogonal coordinate system with the origin thereof being the center (O) of the insertion part (2); and a plurality of small signal cables (31, 32, 33) that extend from an image pickup unit (30) and that have disposed therein, within at least a curved section (7), centers (O2, O3, O4) in quadrants that are different from the above any one quadrant and that are divided from that one quadrant at one axis (Y) of an orthogonal coordinate system which follows the curving vertical direction of the curved section (7). By being provided with the foregoing, the electronic endoscope can secure electromagnetic compatibility (EMC) and make the diameter of the insertion part smaller by efficiently disposing the plurality of cables so that the cables do not buckle within the curved part.
Owner:OLYMPUS CORP
Phased array radar TR component power supply
PendingCN109633559AImprove reliabilityEasy to maintainWave based measurement systemsModifications using gaseous coolantsSurface plateMulti path
The invention discloses a phased array radar TR component power supply. The invention aims to provide the TR component power supply which is high in reliability, high in integration level, convenientto install, maintain as well as upgrade and expand; according to the technical scheme, power supply modules (8) with arch-shaped handles at the front ends are arranged in module channels of a power supply machine box bottom plate (4) side by side in a ranks mode through rectangular windows arranged in a linear array configuration mode through a power supply machine box front panel (1), the tail ends with connectors are inserted into module blind-plug connectors (13), the module blind-plug connectors (13) are connected to power input and output connectors (12) fixed on power supply machine boxrear panels (5) through connecting back plates (7), and are used for outputting a direct-current power supply; one end of a main control panel (9) is connected with a man-machine interaction panel (10) through a high-speed arranging cable, and the other end of the main control panel (9) is connected with the power supply modules (8) inserted in the module blind-plug connectors (13) through the connecting back plates (7), and reliable and stable conversion from one path of high-voltage alternating-current power supply to multi-path low-voltage direct-current power supply is completed.
Owner:10TH RES INST OF CETC
Vehicle fully-reinforced multi-unit server
InactiveCN102004526AGood effectImprove interchangeabilityDigital data processing detailsKVM switchEmbedded system
The invention discloses a vehicle fully-reinforced multi-unit server, which belongs to vehicle equipment. In the server, a back panel, a power module, a server system board, a network switching module, a keyboard, video and mouse (KVM) switcher, an arbitration card, input and output (IO) equipment and a memory control module are arranged in a case, wherein the KVM switcher is integrated on the back panel; all the power module, the server system board, the network switching module, the arbitration card, the IO equipment and the memory control module are inserted in the back panel; the power module is connected with the server system board, the network switching module, the KVM switcher, the arbitration card, the IO equipment and the memory control module and provide power for the components; the power module is a redundant power module; all the network switching module, the KVM switcher and the arbitration card are connected with the server system board; and the memory control module is connected with the arbitration card through the IO equipment. Compared with the prior art, the server has the characteristics of rational design, high stability, high electromagnetic compatibility, vibration resistance, and the like, and is convenient to operate and easy to maintain.
Owner:SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
Controller atmospheric pressure balancing device
ActiveCN107734902AFew external interfacesSmall external interfaceEngine controllersMachines/enginesAtmospheric airElectromagnetic shielding
The invention provides a controller atmospheric pressure balancing device which comprises a gas nozzle, a high-strength silicon rubber hose, an air joint, a vent plug, a controller cover, a controllerbody, a conductive seal ring and a circuit board. The small-diameter gas nozzle is introduced into a built-in filter device through a pipeline, the same atmospheric pressure inside and outside a controller is realized, the collection of outside atmosphere by an atmospheric pressure sensor on the circuit board in a box is facilitated, the air pressure of a position where an atmospheric pressure sensor chip on the circuit board in the controller is located is the same with outside atmospheric pressure, the outside interface of the controller atmospheric pressure balancing device is small, the possibility of stagnant water is little, electromagnetic shielding performance is not lost, and the controller atmospheric pressure collection performance and electromagnetic compatibility are ensured.
Owner:CHINA NORTH ENGINE INST TIANJIN
Multi-channel controllable output filter device
PendingCN107370362AIncrease cooling areaReduced Power RequirementsScreening casingsPower conversion systemsPrinted circuit boardElectromagnetic compatibility
The invention provides a multi-channel controllable output filter device. The device includes a shielding shell which is internally provided with a filter circuit board and a switch circuit board. The filter circuit board is provided with a plurality of filter branches. The switch circuit board is provided with a plurality of switch branches. The positive input ends of the filter branches are connected in parallel, and are connected with a positive input wiring end. The negative input ends of the filter branches are connected in parallel, and are connected with a negative input wiring end. The positive / negative output ends of the filter branches are connected with the input ends of the switch branches in a one-to-one correspondence manner. The negative / positive output ends of the filter branches are connected with negative / positive switch output wiring ends in a one-to-one correspondence manner. Each switch branch includes a controllable switch circuit. The control ends of the controllable switch circuits are connected with control wiring pins in a one-to-one correspondence manner. A control common wiring end is connected with the negative input ends of the filter branches or the negative switch output wiring ends. The multi-channel controllable output filter device is suitable to be used as a high-power load switch, and has good electromagnetic compatibility.
Owner:CHONGQING DAJI ELECTRONICS TECH
Missile-borne high-speed backplane based on VPX standard
InactiveCN105783611AImprove reliabilityReduce weight and sizeSelf-propelled projectilesElectricityComputer module
The invention discloses a missile-borne high-speed backplane based on a VPX standard. The backplane comprises a PCB provided with a signal layer, a power layer and a plane layer; a first power connector and a second power connector which are used for providing power input of an external power system are fixed to the PCB; a plurality of module groove positions are further fixed to the PCB; the intervals between the module groove positions are 25.4 mm of the VPX standard; and the module groove positions are in communication with an external device through a reinforced mixed installation type electric connector. The scheme has the beneficial effects that the assembly complexity is low, signal transmission is high in speed and stable, extending and upgrading are easy and convenient, reliability is high, and cost is low, and is applicable to missiles designed to be integrated, universal and small.
Owner:BEIJING INST OF ELECTRONICS SYST ENG
Computer System with ID Tag
InactiveUS20080238633A1Avoid interferenceAvoid readingError detection/correctionSubscribers indirect connectionComputerized systemEngineering
Owner:FUJITSU SIEMENS COMP GMBH
Contactless online testing device for input impedance at each position of printed circuit board
ActiveCN110531161AThe impact of small job statusFlexible accessResistance/reactance/impedenceInput impedanceComputer module
The invention discloses a contactless online testing device for an input impedance at each position of a printed circuit board. The device comprises a mechanical scanning holder, a mechanical controlmodule, a microminiature near field signal sensor, a signal obtaining module, a signal analysis module, a display module, a storage module and a power module. Through utilization of the microminiaturenear field signal sensor and the signal obtaining module, near field magnetic field signals around input or output signal lines of a chip, a component and a circuit module at each position of a tested printed circuit board are coupled and obtained. Through utilization of the signal analysis module, the signals are processed, and the input impedances of the chip, the component and the circuit module at each position of the tested printed circuit board are solved, and corresponding amplitude frequency and phase frequency information is output. According to the device, through adoption of the contactless microminiature near field signal sensor, influence on a working state of the printed circuit board is low. The device is applicable to online testing of the input impedances of the chip, thecomponent and the circuit module at each position of the printed circuit board.
Owner:BEIHANG UNIV
Intelligent type low-voltage in-set draw-out switch device and signal dynamic and static plugins thereof
InactiveCN103700986AImprove the anti-interference ability of the bodyGuaranteed Electromagnetic CompatibilitySwitchgear detailsCouplings bases/casesElectromagnetic compatibilityEngineering
The invention relates to an intelligent type low-voltage in-set draw-out switch device and an anti-interference signal dynamic and static plugins thereof. The dynamic and static plugins are respectively provided with two or multiple signal dynamic or static plug-in pieces and one grounding dynamic and static plug-in piece; the dynamic and static plugins are respectively provided with an insulation shell and a metal shielding body and are respectively in contact with the metal shielding body through a grounding connection post through each grounding plug-in piece of the dynamic and static plugins, and the grounding continuity of signal dynamic and static plugin bodies can be realized; signal dynamic plugins are arranged on a drawer unit, signal static plugins are arranged on a cabinet body, and connection, test and disconnection are realized through a drawer pushing and interlocking mechanism. According to the intelligent type low-voltage in-set draw-out switch device disclosed by the invention, the anti-interference capacity of signal transmission of the signal dynamic and static plugins in connection application is greatly increased, quick connection is realized, the operability and the electromagnetic compatibility of the intelligent type low-voltage in-set draw-out switch device and the reliability of an anti-interference signal transmission application function are increased.
Owner:常州新苑星电器有限公司
High-voltage mooring unmanned aerial vehicle power supply system
ActiveCN111532446AGuaranteed electromagnetic compatibilityVoltage remains stableElectrical apparatusFor captive aircraftsThree-phase electric powerElectrical and Electronics engineering
The embodiment of the invention provides a high-voltage mooring unmanned aerial vehicle power supply system. The high-voltage mooring unmanned aerial vehicle power supply system comprises an off-boardpower supply and an on-board power supply connected with the off-board power supply. The off-board power supply comprises a first EMC suppression circuit connected with a three-phase power supply, afirst input anti-impact circuit connected with the first EMC suppression circuit, an input rectifying and filtering circuit connected with the first input anti-impact circuit, a plurality of DC / DC modules connected in parallel and connected with the input rectifying and filtering circuit, an output filter circuit connected with an output end of each DC / DC module, a line compensation circuit connected with the output end of the output filter circuit, and an ADC processing module connected with the line compensation circuit. The ADC processing module is connected with each DC / DC module and is used for adjusting the output voltage of each DC / DC module according to a compensation signal of the line compensation circuit. Through the circuit, stability of an output voltage is improved; and meanwhile, the on-board power supply does not need to provide high-power power so that complexity, a size and weight of onboard equipment are reduced.
Owner:成都大奇鹰科技有限公司
Front-end digitallizer based on FPGA
ActiveCN106330209AGuaranteed Electromagnetic CompatibilityImprove the measurement effectRadio transmission for post communicationComputer scienceDigital front end
The invention discloses a front-end digitallizer based on an FPGA. The front-end digitallizer comprises a digital front end and an analytical back end, wherein the digital front end is connected to the analytical back end; the digital front end is used for collection, pre-processing, storage and transmission of a spatial electromagnetic signal, packaging an original spatial electromagnetic signal and feature value data into a data frame and transmitting the data frame to the analytical back end; and the analytical back end is used for receiving and analyzing the data frame sent by the digital front end, carrying out data post-processing on the data frame and providing interface management. The device has strong electromagnetic compatibility, and measurement capability of characteristic parameters of the spatial electromagnetic signal of heavy sensitive equipment can be improved.
Owner:HEFEI UNIV OF TECH +1
Communication antenna and mounting and detaching method therefor
ActiveCN107171052AGuaranteed index performanceReduce radiation doseAntenna supports/mountingsAntenna adaptation in movable bodiesElectromagnetic interferenceRadio frequency
The invention discloses a communication antenna and a mounting and detaching method therefor. The communication antenna comprises a mounting base, a back cavity, a microstrip antenna and a radio frequency cable assembly; the mounting base is used for being pasted and fixed in the position of an internal window of a carrying platform, and the back cavity is fixed in the mounting base; one end of a core wire of the radio frequency cable assembly is mounted on a conductive bottom plate of the back cavity while the other end of the core wire is connected with a feed point of the microstrip antenna; a radio frequency cable shielding layer is grounded; a microstrip antenna is fixedly connected with the conductive bottom plate of the back cavity; and the height between the conductive bottom plate and the mounting base is adjustable. The communication antenna provided by the invention is free of transformation on the mounting platform, capable of being mounted and detached rapidly and high in imperceptibility; the communication antenna can be rapidly mounted in a traceless manner when a temporary task is executed; the original shape can be recovered rapidly in retraction, so that high imperceptibility is realized; and meanwhile, electromagnetic interference to other electronic equipment in the platform can be avoided in operation, and electromagnetic compatibility to the equipment is also achieved.
Owner:36TH RES INST OF CETC
Reinforced intelligent display
InactiveCN109298750AGuaranteed readabilityGuaranteed surface strengthDigital data processing detailsNon-linear opticsTransceiverDisplay device
The invention provides a reinforced intelligent display, comprising an interface board, a main board and a liquid crystal screen assembly. The motherboard comprises a power management module, a main processor module, a bus interface module and a display control module. The main function of the interface board is the interface between the main board and other modules, including power adapter module, LVDS encoder module, RS485 transceiver module, network adapter module, USB adapter module, backlight control module. The liquid crystal screen assembly uses a constant current source to drive the original screen backlight. The bus data is processed by I.MX51 main processor, and the time, navigation information, weather information, propulsion system parameter information and external interface data alarm are displayed by graphics and characters. Anti-glare, electromagnetic shielding, explosion-proof and other treatments are carried out on the surface of the LCD panel to reduce the specular reflection of the LCD surface, so as to ensure the surface strength of the display, and enhance the electromagnetic compatibility of the reinforced intelligent display.
Owner:AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD
Input and output circuit with low pass filtering function
InactiveCN107248861AIncrease success rateGuaranteed Electromagnetic CompatibilityReliability increase in field effect transistorsLogic circuit interface arrangementsDriving currentComputer module
The invention discloses an input and output circuit with a low pass filtering function. The input and output circuit comprises an output module, an ESD protection module, a low pass filtering module and an input module; the output module is connected with output of a chip core and a PAD, and used to output a driving current of a milliampere level; the ESD protection module is connected between the PAD and the low pass filtering module to provide electrostatic protection for the PAD; the low pass filtering module is connected between the ESD protection module and the input module, and used to filter high frequency noises and pass low frequency signals; and one end of the input module is connected to the low pass filtering module, the other end of the input module is connected with the chip core, and the input module is used to convert input signals into analog / digital signals that satisfy requirements of subsequent circuits. According to the invention, the input and output circuit with the low pass filtering function can be realized, high frequency interference higher than the working frequency of signals is isolated effectively, the success rate of signal transmission is improved, and the electromagnetic compatibility of a chip is ensured.
Owner:SHANGHAI HUALI MICROELECTRONICS CORP
Dual-channel launch assembly for the phased array antenna of the relay user terminal of the launch vehicle
ActiveCN110808745BReduce front areaReduce the weight of the whole machineRadio transmissionChannel powerIsolator
Owner:SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
Multi-channel compound heat radiating sealing chassis
InactiveCN102892270BIncrease the heat exchange areaImprove heat transfer efficiencyMagnetic/electric field screeningHermetically-sealed casingsHigh densityWeak current
The invention relates to a multi-channel compound heat radiating sealing chassis which is characterized in that outer sealing plates are arranged on two sides of a chassis frame, an upper cover plate and a lower cover plate are arranged on and under the chassis frame, two ends of the chassis frame are provided with a front panel and a rear sealing plate, a fan is arranged on the rear sealing plate, a connector frame is arranged inside the chassis frame, a separation plate for separating a strong current region and a weak current region is arranged on the connector frame, a side wall heat radiating fin is arranged on the connector frame in the strong current region, an installing plate is arranged on one side of the weak current region, which is positioned on the rear sealing plate, an inner fan is arranged on the installing plate, an inner separation plate is arranged between the inner fan and the rear sealing plate, heat radiating fins are arranged on two ends of the inner separating plate; and two side surface heat exchange plates are arranged on two sides of the chassis frame and positioned between the chassis frame and the outer sealing plates. According to the invention, by adopting a method of combining conduction with secondary forced heat radiation, the problem of heat radiation of a high-density and large-power sealing electronic device can be effectively solved.
Owner:CNGC INST NO 206 OF CHINA ARMS IND GRP
Housing for a plug-in connection
ActiveCN108140978AGuaranteed Electromagnetic CompatibilityImprove electromagnetic compatibilityCoupling device detailsDetentEngineering
The invention relates to a housing for a plug-in connection, comprising a lower shell element (100) and an upper shell element (200) that is identical to the lower shell element (100), each shell element (100, 200) containing a retaining element (2), by means of which a plug-in connector (1) can be secured to the housing. Each shell element (100, 200) contains a receptacle (3), in which a cable mount (9) can be received and each shell element (100, 200) has at least one detent element (11, 12, 13, 14) that cooperates with a mating detent element (21, 22, 23, 24) of the other shell element (200, 100). The detent elements (11, 12, 13, 14) and the mating detent elements (21, 22, 23, 24) have a multi-step design and the entire border regions between the shell elements (100, 200) forming the housing, with the exception of openings for the plug-in connector (1) and the cable mount (9), have a multi-step design.
Owner:TTL NETWORK GMBH
Intelligent low-voltage complete set of withdrawable switchgear and its signal dynamic and static plug-ins
InactiveCN103700986BImprove anti-interference abilityImprove connection reliabilitySwitchgear detailsCouplings bases/casesLow voltageEngineering
The invention relates to an intelligent type low-voltage in-set draw-out switch device and an anti-interference signal dynamic and static plugins thereof. The dynamic and static plugins are respectively provided with two or multiple signal dynamic or static plug-in pieces and one grounding dynamic and static plug-in piece; the dynamic and static plugins are respectively provided with an insulation shell and a metal shielding body and are respectively in contact with the metal shielding body through a grounding connection post through each grounding plug-in piece of the dynamic and static plugins, and the grounding continuity of signal dynamic and static plugin bodies can be realized; signal dynamic plugins are arranged on a drawer unit, signal static plugins are arranged on a cabinet body, and connection, test and disconnection are realized through a drawer pushing and interlocking mechanism. According to the intelligent type low-voltage in-set draw-out switch device disclosed by the invention, the anti-interference capacity of signal transmission of the signal dynamic and static plugins in connection application is greatly increased, quick connection is realized, the operability and the electromagnetic compatibility of the intelligent type low-voltage in-set draw-out switch device and the reliability of an anti-interference signal transmission application function are increased.
Owner:常州新苑星电器有限公司
A dust-proof device
ActiveCN108845630BPrevent intrusionGuaranteed Electromagnetic CompatibilityDigital processing power distributionForeign matterEngineering
Owner:JIANGNAN UNIV
Power assembly
PendingCN114024513AReduce volumeImprove reliabilityAmplifier with semiconductor-devices/discharge-tubesRF amplifierRadio frequency signalControl theory
The invention provides a power assembly, and the power assembly comprises a power supply control conversion circuit, a grid voltage protection circuit and a radio frequency power amplification circuit; the input end of the power supply control conversion circuit is an external power supply port of the power assembly, and the output end comprises a low-voltage output end and a high-voltage output end; the input end of the grid voltage protection circuit is connected with the high-voltage output end of the power supply control conversion circuit; the input end of the radio frequency power amplification circuit comprises a voltage input end and a radio frequency signal input end, wherein the voltage input end is respectively connected with the low-voltage output end of the power supply control conversion circuit and the output end of the grid voltage protection circuit. Through the power supply control conversion circuit, the grid voltage protection circuit and the radio frequency power amplification circuit and reasonable layout design, the size of the assembly is reduced, the electromagnetic compatibility and anti-interference performance of the power assembly are ensured, and the output power is high and adjustable; and various performance indexes of the power assembly in electrical, mechanical and thermal aspects are ensured.
Owner:NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
A front-end digital device based on fpga
ActiveCN106330209BGuaranteed Electromagnetic CompatibilityImprove the measurement effectRadio transmission for post communicationComputer scienceDigital front end
The invention discloses a front-end digitallizer based on an FPGA. The front-end digitallizer comprises a digital front end and an analytical back end, wherein the digital front end is connected to the analytical back end; the digital front end is used for collection, pre-processing, storage and transmission of a spatial electromagnetic signal, packaging an original spatial electromagnetic signal and feature value data into a data frame and transmitting the data frame to the analytical back end; and the analytical back end is used for receiving and analyzing the data frame sent by the digital front end, carrying out data post-processing on the data frame and providing interface management. The device has strong electromagnetic compatibility, and measurement capability of characteristic parameters of the spatial electromagnetic signal of heavy sensitive equipment can be improved.
Owner:HEFEI UNIV OF TECH +1
Small comprehensive control box suitable for remote programming control and use method of small comprehensive control box
PendingCN114679856AAchieve positioningRealize the display effectCasings with display/control unitsCasings/cabinets/drawers detailsRemote controlControl engineering
The invention belongs to the technical field of unmanned platform control boxes, and particularly relates to a small comprehensive control box suitable for remote programming control and a using method thereof, and the small comprehensive control box comprises an intelligent power distribution assembly, a communication control assembly, a network switching assembly, a horizontal motor driving assembly, a pitching motor driving assembly, an external interface assembly and a box body assembly. The communication control assembly can realize remote control on each load through the network switching assembly and the motor driving assembly, so that the equipment has online programming and ad-hoc network capabilities, and the burden of personnel can be reduced to a greater extent; and meanwhile, comprehensive management and control and power distribution / outage control can be carried out on all devices of the unmanned load platform through the communication control assembly, the working state of all loads can be collected through the information indication panel, and the working state can be displayed on the information indication panel through indication lamps.
Owner:CHINA NORTH VEHICLE RES INST
Electromagnetic compatibility shielding cavity of a KVM all-in-one machine
ActiveCN107041115BGuaranteed Electromagnetic CompatibilityElectromagnetic disturbance signal influenceEMI leakage reductionScreening metallic containersCopper foilEngineering
Owner:THE 41ST INST OF CHINA ELECTRONICS TECH GRP
Filter components and their applications
ActiveCN105141274BImprove stabilityGuaranteed Electromagnetic CompatibilityMultiple-port networksElectromagnetic interferenceEngineering
Owner:CHONGQING DAJI ELECTRONICS TECH
A non-contact online test device for input impedance at each position of a printed circuit board
ActiveCN110531161BThe impact of small job statusFlexible accessResistance/reactance/impedenceOnline testHemt circuits
The invention discloses a contactless online testing device for an input impedance at each position of a printed circuit board. The device comprises a mechanical scanning holder, a mechanical controlmodule, a microminiature near field signal sensor, a signal obtaining module, a signal analysis module, a display module, a storage module and a power module. Through utilization of the microminiaturenear field signal sensor and the signal obtaining module, near field magnetic field signals around input or output signal lines of a chip, a component and a circuit module at each position of a tested printed circuit board are coupled and obtained. Through utilization of the signal analysis module, the signals are processed, and the input impedances of the chip, the component and the circuit module at each position of the tested printed circuit board are solved, and corresponding amplitude frequency and phase frequency information is output. According to the device, through adoption of the contactless microminiature near field signal sensor, influence on a working state of the printed circuit board is low. The device is applicable to online testing of the input impedances of the chip, thecomponent and the circuit module at each position of the printed circuit board.
Owner:BEIHANG UNIV
In-system Electromagnetic Compatibility Prediction Analysis System and Analysis Method
ActiveCN103455680BEasy to adjustAvoid overdesignSpecial data processing applicationsTask analysisFrequency spectrum
The invention relates to a prediction analysis system and method for EMC (Electro Magnetic Compatibility) in a system. The prediction analysis system comprises two main parts, namely a first part and a second part, wherein the first part is an input and initialization part and mainly completes input of predictive parameters, generation of spectrum data and files in the system and establishment of cable topological graphs; the second part is a prediction task analysis module and is mainly combined with a series of data files generated by an input and initialization module to complete generation of an EMC index and EMI(Electro Magnetic Interference)evaluation and analysis functions. The prediction analysis system for EMC breaks the technological monopoly, and the invention provides the new system and method to enable the EMC analysis of equipment to be more convenient. The prediction analysis method for EMC ensures EMC as much as possible in the whole research cycle and even the whole life cycle of the system. The EMI evaluation and trade-off analysis of the system are realized in the research cycle of the system, an economic and effective technological means is provided in the overall life cycle of the system, and the EMC of the system is most likely realized.
Owner:陕西海泰电子有限责任公司
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