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42results about How to "Avoid electrical interference" patented technology
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Integrated lancing test strip with capillary transfer sheet
InactiveUS20060079810A1Minimize lateral wickingAvoid electrical interferenceDiagnostic recording/measuringSensorsElectrical testingEngineering
An integrated bodily fluid sampling device includes a lancet, a test strip attached to the lancet, and a flexible sheet extending from the test strip. The lancet and the flexible sheet form a gap sized to draw bodily fluid onto the test strip via capillary action. Further, a sampling end portion of the flexible sheet is shaped to enhance capillary action of the sheet. In one form, a removable film covers the lancet and forms a seal with the flexible sheet such that the seal surrounds a lancet tip. In another form, an insulating layer covers a portion of the lancet to prevent electrical interference between the lancet and an electrical testing system on the test strip and ensure an accurate analysis of the bodily fluid.
Owner:ROCHE DIABETES CARE INC
Small motor
InactiveUS20070001535A1Increasing current-carrying capacitorWithout increasing size of motorRotary current collectorStructural associationCapacitanceCapacitor
A small motor includes: a rotor shaft having a commutator; and a motor brush in contact with the commutator of the rotor shaft. The axis of the motor brush intersects the center line of the rotor shaft at a specified angle other than a right angle. This arrangement enables the motor brush to be brought into contact with the commutator at a wide contact area. This increases the current-carrying capacitor of the motor brush, thus allowing the DC motor to be driven by a large toque without increasing the size of the motor.
Owner:MORI HIDEYUKI
Circuit arrangement, data processing device comprising such circuit arrangement as well as method for identifying an attack on such circuit arrangement
InactiveCN101379517AProtection against high current peaksProtection against high current spikesSemiconductor/solid-state device detailsSolid-state devicesComputer scienceData lines
In order to further develop a circuit arrangement (100), in particular an active shield, as well as a method for identifying at least one attack on the circuit arrangement (100), wherein test data are generated, the test data are transmitted via at least one group of data lines (50) being designed for carrying data signals in the form of regular data and / or in the form of the test data, the transmitted test data are received, the received test data are compared with expected test data, and any discrepancy between the received test data and the expected test data is ascertained or determined, in such way that less power is required for examining, in particular for identifying, if the circuit arrangement (100) has been attacked, it is proposed that part of the group of data lines (50) is selected to carry new or most recent test data having been generated.
Owner:NXP BV
Integrated lancing test strip with capillary transfer sheet
InactiveUS7488298B2Minimize lateral wickingAvoid electrical interferenceDiagnostic recording/measuringSensorsBlood capillaryElectrical testing
An integrated bodily fluid sampling device includes a lancet, a test strip attached to the lancet, and a flexible sheet extending from the test strip. The lancet and the flexible sheet form a gap sized to draw bodily fluid onto the test strip via capillary action. Further, a sampling end portion of the flexible sheet is shaped to enhance capillary action of the sheet. In one form, a removable film covers the lancet and forms a seal with the flexible sheet such that the seal surrounds a lancet tip. In another form, an insulating layer covers a portion of the lancet to prevent electrical interference between the lancet and an electrical testing system on the test strip and ensure an accurate analysis of the bodily fluid.
Owner:ROCHE DIABETES CARE INC
Electromagnetic wave measuring apparatus
InactiveUS20100134364A1Avoid interferenceReduce usageElectromagentic field characteristicsAntennasCapacitive couplingMeasurement device
An electromagnetic wave measuring apparatus includes: a reception antenna receiving an electromagnetic wave generated from an electronic apparatus placed at a predetermined distance away; an antenna mast holding the reception antenna; and a base portion fixing an end of the antenna mast vertically to a floor, the base portion having a flat bottom surface opposed to the floor, the bottom surface and the floor forming a gap of 2 mm or less therebetween and being capacitively coupled to each other. The base portion includes a mast-fixing portion having a height of 45 mm or less vertically to the floor and fixing the end of the antenna mast, a power portion being disposed at a position away from the reception antenna and generating power, and a power transmission portion transmitting the power generated by the power portion to the reception antenna and vertically moving the reception antenna along the antenna mast.
Owner:SONY CORP
Display panel and preparation method thereof and display device
InactiveCN110277430AAvoid electrical interferenceReduce process difficulty and complexitySolid-state devicesSemiconductor/solid-state device manufacturingFingerprintImage sensor
The invention provides a display panel and a preparation method thereof and a display device. A light shielding layer and a display device which realize the hole imaging function are respectively arranged on the two opposite surfaces of an underlying substrate, and a photosensitive image sensor is arranged under the light shielding layer. The light shielding layer is trepanned so that the hole imaging function can be realized and the fingerprint identification function under the screen can be achieved. The position of the light shielding layer for hole imaging is changed and the light shielding layer is arranged on the back surface of the underlying substrate away from the display device, so that the display device can be away from the light shielding layer, and the electrical interference of the light shielding layer won the display device can be avoided. The display device and the light shielding layer are manufactured on different surfaces of the underlying substrate and the difficulty and the complexity of the manufacturing process can be reduced. The light shielding layer for realizing the hole imaging is arranged on the back surface of the underlying substrate so that the hole of the light shielding layer is closer to the photosensitive sensor, the signal intensity received by the photosensitive image sensor can be improved and the photosensitive image sensor is more favorable for accurately and quickly identifying the fingerprints.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD
Novel through silicon contact structure and method of forming same
ActiveCN110036475AReduce/eliminate potential differenceEliminate potential differenceSemiconductor/solid-state device detailsSolid-state devicesDielectric layerSilicon
In the TSC structure, a first dielectric layer is formed over the first major surface of the substrate. The substrate includes opposing second major surfaces. A TSC is formed in the first dielectric layer and the substrate such that the TSC passes through the first dielectric layer and extends into the substrate. A conductive plate electrically coupled to the TSC is formed over the first dielectric layer. An isolation trench is formed in the substrate to surround the conductive plate and is spaced apart from the conductive plate. A second dielectric layer is formed on the second major surfaceof the substrate. A plurality of first through holes extending into the substrate and connected to the TSC are formed in the second dielectric layer. A plurality of second through holes extending intothe substrate but not connected to the TSC are formed in the second dielectric layer.
Owner:YANGTZE MEMORY TECH CO LTD
Coil panel and assembling method of coil panel and coil panel support and electromagnetic range
ActiveCN103037552AIncrease the lengthHigh thermal efficiencyDomestic stoves or rangesCoil arrangementsSurface coilThermal efficiency
The invention provides a coil panel which comprises a coil panel support (4) and a coil (5), wherein the coil panel support (4) is provided with a first surface and a second surface which are arranged in a back-to-back mode, and the coil (5) is wound around the first surface and the second surface of the coil panel support (4). The invention further provides an assembling method of the coil panel, the coil panel support and an electromagnetic range. Due to the fact that the coil is wound around the two surfaces of the coil panel support, the length of the coil is doubled in the same area, and correspondingly, the thermal efficiency of the coil panel and the thermal efficiency of the electromagnetic range provided with the coil panel can be improved substantially. Besides, due to the fact that the coil portion on the upper surface and the coil portion on the lower surface are separated by the coil panel support, not only can thermal interference between the coil portion on the upper surface and the coil portion on the lower surface be avoided, but also electric interference between the coil portion on the upper surface and the coil portion on the lower surface can be avoided.
Owner:BSH ELECTRICAL APPLIANCES JIANGSU
Internal discharge mode recognition method and fault diagnosis system for transformer
ActiveCN105203937AAvoid interferenceUniqueness guaranteedTesting dielectric strengthTransformerEngineering
The invention provides an internal discharge mode recognition method for a transformer, which is characterized in that: a singularity index of a signal waveform is extracted from a discharge acoustical signal of a transformer with a known internal fault; singularity indexes of signal waveforms corresponding to various discharge modes are collected, and an acoustical signal feature library for various discharge modes is established; the waveform of a discharge acoustical signal of the monitored transformer is monitored and obtained, and the singularity index of the signal waveform is extracted; the singularity index of the signal waveform of the discharge acoustical signal of the monitored transformer is compared with the acoustical signal feature library, and if the singularity index of the signal waveform of the discharge acoustical signal of the monitored transformer is the same as the singularity index in the feature library, the corresponding discharge mode is determined. The invention further provides an internal discharge fault diagnosis system for the transformer, which is based on the method. According to the method, the internal discharge acoustical signal of the transformer is precisely and stably monitored, the internal discharge mode recognition is performed accurately, and a fault can be found in time through analysis and process of the monitored acoustical signal.
Owner:国网江西省电力有限公司南昌供电分公司 +1
Coil disk and its assembly method, coil disk support, electromagnetic cooker
InactiveCN103037553BIncrease the lengthHigh thermal efficiencyDomestic stoves or rangesCoil arrangementsSurface coilThermal efficiency
The invention provides a coil panel which comprises a coil panel support (4) and a coil (5), wherein the coil panel support (4) is provided with a first surface and a second surface which are arranged in a back-to-back mode, and the coil (5) is wound around the first surface and the second surface of the coil panel support. The invention further provides an assembling method of the coil panel, the coil panel support and an electromagnetic range. Due to the fact that the coil is wound around the two surfaces of the coil panel support, the length of the coil is doubled in the same area, and correspondingly, the thermal efficiency of the coil panel and the thermal efficiency of the electromagnetic range provided with the coil panel can be improved substantially. Besides, due to the fact that the coil portion on the upper surface and the coil portion on the lower surface are separated by the coil panel support, not only can thermal interference between the coil portion on the upper surface and the coil portion on the lower surface be avoided, but also electric interference between the coil portion on the upper surface and the coil portion on the lower surface can be avoided.
Owner:BSH ELECTRICAL APPLIANCES JIANGSU
Electro-optical distance measurement device
InactiveCN101881833ASimple structureAvoid electrical interferenceRecording apparatusOptical rangefindersPhase detectorSignal generator
The invention relates to an electro-optical distance measurement device comprising a signal generator for generating a high-frequency signal, an emitter for sending out measurement light which is subjected to the frequency modulation of the high-frequency signal to an object to be measured, an optical-electric receiving and converting device which receives reflected measurement light reflected from the object to be measured and generates a corresponding high-frequency reflection measurement signal, a phase detector which can carry out mixing processing on the high-frequency signal and a signal processing device used for determining a distance to be measured, wherein the high-frequency signal is input in the phase detector and is mixed with the high-frequency reflection measurement signal in the phase detector to generate a direct current signal, and the direct signal contains phase information for determining the distance to be measured. Since the high-frequency signal and the high-frequency reflection measurement signal which are generated and processed by the electro-optical distance measurement device have the same frequency, the beat interference on a circuit board and the electrical interference among elements in the electro-optical distance measurement device are effectively avoided.
Owner:NANJING CHERVON IND
Spaceborne equipment isolation and guarantee system
ActiveCN107483099AAvoid electrical interferenceIndependentBatteries circuit arrangementsVolume/mass flow measurementTransmission technologyElectrical connection
A spaceborne equipment isolation and guarantee system relates to the field of electrical isolation of spaceborne equipment on satellites, and solves the problems that a power supply and a data link in existing spaceborne equipment are correlated with each other, the noise interference can be easily introduced, the reliability between communication units is poor, the system performance is further affected, and the like. The spaceborne equipment isolation and guarantee system comprises a power supply energy transmission and control system and a ZigBee wireless data transmission system, wherein a solar cell array supplies power to the power supply energy transmission and control system; the power supply energy transmission and control system distributes power to the spaceborne equipment through a QI wireless energy transmission technology, the spaceborne equipment is connected with a spaceborne center computer through a ZigBee wireless data transmission technology, and the spaceborne center computer is communicated with the power supply energy transmission and control system through a CAN bus. According to the spaceborne equipment isolation and guarantee system disclosed by the invention, each spaceborne equipment is a truly independent unit and does not have a direct electrical connection with other equipment, and thus the spaceborne equipment is completely in an electrical isolation state with other equipment, and the stability and reliability of the system can be improved.
Owner:CHANGGUANG SATELLITE TECH CO LTD
Support controller for electrohydraulic control system
ActiveCN103321665AAvoid electrical interferenceImprove loading capacityMine roof supportsAutomatic controlData transmission
The invention relates to a support controller for an electrohydraulic control system. The support controller is mainly characterized by comprising an MCU processing unit, a wireless transceiving unit and two paths of power supply systems. The MCU processing unit is respectively connected with the wireless transceiving unit, two CAN transceivers, a human-machine interaction unit, a data acquisition unit, an infrared receiver and a magnetic valve driver, and the magnetic valve driver is connected with a magnetic pilot valve; one path of power supply system is connected with and supplies power to the MCU processing unit, the wireless transceiving unit, the two CAN transceivers and the human-machine interaction unit; the other path of power supply system is connected with and supplies power to the infrared receiver, the data acquisition unit, the magnetic valve driver and the magnetic pilot valve. The support controller for the electrohydraulic control system is reasonable in design, data transmission is carried out in a wireless transmission mode and in a manner that the two paths of power supply systems are adopted, automatic control function demands of a hydraulic support are met, the resource utilization ratio of the support controller is improved, the use of auxiliary equipment is reduced, and failure rates are lowered.
Owner:TIANJIN HUANING ELECTRONICS
Power cord plug with wireless module
PendingCN108462004AAvoid electrical interferenceIngenious structureCoupling device detailsTwo-part coupling devicesElectricityEngineering
The invention provides a power cord plug with a wireless module, comprising a plug case, a power harness, a live wire insert and a neutral wire insert, wherein the power harness is respectively connected to the live wire insert and the neutral wire insert in series. The invention further comprises a wireless communication component installed inside the plug case; the communication wire built in the power harness is electrically connected with the wireless communication component; the plug case comprises an upper cover and a bottom cover; and the live wire insert and the neutral wire insert arerespectively riveted with the bottom cover. The invention adopts a built-in wireless communication component to minimize the influence of electrical appliances of the electrical equipment, and effectively avoid electrical interference of the electrical equipment itself. The invention has the advantages of ingenious structure, reasonable design, strong practicability and convenient promotion.
Owner:DONGGUAN WEIRUI ELECTCONIC
Method of assembling a lower electrode mechanism for welding and lower electrode mechanism for welding
InactiveUS20210213558A1Increase durabilityFacilitate connection procedureResistance electrode holdersWelding/cutting media/materialsStructural engineeringMaterials science
In a method of assembling a lower electrode mechanism, after a support tube and an electrode holder are integrally assembled, a cylindrical assembly case is inserted into the support tube from the bottom to align an elongated hole of the support tube with an elongated hole of the assembly case to assemble them. The rod assembly is inserted into the tube from the upper part of the electrode holder. The lower end of the rod of the rod assembly is placed to a position visible through the elongated hole of the support tube. A protruding bar is inserted into the support tube, the base end of the protruding bar is fixed to the lower end of the rod, and the slide sensor is attached to the support tube while the distal end of the protruding bar and detector of the slide sensor are connected.
Owner:SMK CO LTD
Through silicon contact structures and formation method thereof
ActiveCN111261606AReduce/eliminate potential differenceEliminate potential differenceSemiconductor/solid-state device detailsSolid-state devicesEngineering physicsDielectric layer
Owner:YANGTZE MEMORY TECH CO LTD
Motor control system and method for water treatment engineering
InactiveCN109240194AFunction increaseAvoid electrical interferenceProgramme control in sequence/logic controllersAutomatic controlLow voltage
The invention provides a motor control system for water treatment engineering. The motor control system comprises an MCC low-voltage cabinet, a PLC / DCS controller and a spot operation box, wherein thePLC / DCS controller comprises a signal input module and a signal output module; the signal input module is connected with the MCC low-voltage cabinet; the motor control system furthermore comprises acontactor which is located on the MCC low-voltage cabinet and is used for controlling the ON / OFF of a motor main circuit; a coil of the contactor is connected with a motor control loop and is controlled through the signal output module of the PLC / DCS controller; an intermediate relay is connected with two ends of a coil loop of the contactor in parallel; when a manual / automatic switching switch isswitched to a contact corresponding to an automatic control manner, the intermediate relay is closed; the intermediate relay is connected with the signal input module of the PLC / DCS controller; and an opening or closing state signal of the intermediate relay serves as an automatic control manner signal and is transferred to a weak current digital input end of the signal input module of the PLC / DCS controller.
Owner:CSD BEIJING E P DEV CO LTD
Atomization device used for clothes treatment equipment and clothes treatment equipment
ActiveCN112144228AQuick installationEasy to assemble and disassembleOther washing machinesTextiles and paperEngineeringMechanical engineering
Owner:QINGDAO HAIER WASHING ELECTRIC APPLIANCES CO LTD +1
LCD short-circuit detection circuit and detection method
The invention, which relates to the technical field of LCD short circuit detection, provides an LCD short-circuit detection circuit. A multi-path parallel short-circuit detection system is establishedthrough an acquisition module, a detection module and a multi-path gating device. Under the support of a CPU, an LCD short-circuit detection method is adopted. A detection module is used for carryingout voltage division on a reference voltage; the CPU collects a voltage of a corresponding pin by using the acquisition module; and the collected voltage is compared with a preset normal voltage or arange to analyze a pin with a short-circuit problem and a short-circuit type rapidly, so that the time cost of short-circuit analysis of the LCD signal line is lowered and the short-circuit detectionefficiency is improved. On the basis of the alternative characteristic of the multiplexer, a short-circuit detection system and a CPU driving signal line are distinguished; short-circuit signal detection of an isolated driving lightening signal is carried out before the driving lightening, so that the electrical interference of the short-circuit detection system on the LCD load driving signal iseffectively eliminated and the signal attenuation of the driving signal is avoided.
Owner:BIEL OPTIC HUIZHOU
Electromagnetic wave measuring apparatus
InactiveUS8294623B2Avoid interferenceReduce usageAntennasAntenna radiation diagramsCapacitanceElectromagnetic electron wave
Owner:SONY CORP
Water heater
InactiveCN103808002ATo standardize and orderlyAvoid electrical interferenceWater heatersElectricityElectrical element
The invention discloses a water heater which comprises electric wires for electrically connecting electrical elements in the water heater; a wire tidying device is arranged in the water heater and is used for guiding and fixing the direction of each wire. As the wire tidying device is arranged in the water heater, strong and weak electric wires can be separated from each other to avoid electrical interference, the direction of each wire is standard and in order, and wire mixing is avoided.
Owner:BSH ELECTRICAL APPLIANCES JIANGSU
Through-silicon contact structure and method of forming the same
ActiveCN110036475BReduce/eliminate potential differenceEliminate potential differenceSemiconductor/solid-state device detailsSolid-state devicesDielectric layerSilicon
In a TSC structure, a first dielectric layer is formed over a first major surface of a substrate. The substrate includes an opposing second major surface. A TSC is formed in the first dielectric layer and the substrate such that the TSC extends through the first dielectric layer and into the substrate. A conductive plate electrically coupled to the TSC is formed over the first dielectric layer. An isolation trench is formed in the substrate to surround and be spaced from the conductive plate. A second dielectric layer is formed on the second major surface of the substrate. A first plurality of vias extending into the substrate and connected to the TSC are formed in the second dielectric layer. A second plurality of vias extending into the substrate, but not connected to the TSC, are formed in the second dielectric layer.
Owner:YANGTZE MEMORY TECH CO LTD
Circuit state discrimination device and method
PendingCN113394740AQuick responseAvoid electrical interferenceEmergency protective arrangement detailsArrangements responsive to excess currentCurrent transducerSoftware engineering
The invention relates to a circuit state discrimination device and method, and the device comprises a transmission module which is used for receiving or transmitting a signal; and a current detection module connected with the transmission module, wherein the current detection module comprises a current sensor, the current sensor is externally connected with a shunt resistor, and the current detection module judges the state of the circuit through the shunt resistor. According to the invention, the circuit state is discriminated through the external shunt resistor, and the circuit is protected according to the circuit state.
Owner:YANTAI UNIV
Semiconductor device and manufacturing method thereof
PendingCN114005836AImprove yieldImprove reliabilitySolid-state devicesSemiconductor devicesElectrical FailureSemiconductor structure
The invention provides a semiconductor device and a manufacturing method thereof. The manufacturing method of the semiconductor device comprises the steps of forming a semiconductor structure which comprises a substrate, a stacking structure located in a first direction of the substrate, a sacrificial layer located between the substrate and the stacking structure, and a channel structure which penetrates through the stacking structure and extends into the substrate, wherein the channel structure comprises a functional layer, a channel layer and an insulating layer, and a gap located in the insulating layer is formed in the end, which is close to the sacrificial layer, of the channel structure; removing the substrate; removing at least part of the sacrificial layer to expose a gap at the end part of the channel structure; and forming an insulating filling block in the gap. The insulating filling block is formed in the gap, so that the situation that when the semiconductor layer is formed subsequently, the material of the semiconductor layer enters the gap, electrical interference is caused, and consequently electrical failure of the device is caused is avoided, and the yield and reliability of the device are improved.
Owner:YANGTZE MEMORY TECH CO LTD
Turnover type liquid level sensor detection device
PendingCN111678572AEasy to operateLow costTesting/calibration apparatusControl engineeringDisplay device
The invention discloses a turnover type liquid level sensor detection device. The device comprises a control cabinet with a controller and a display, the control cabinet is provided with a pair of bases, a turnover table is movably installed through the bases, and the turnover table is provided with a fixing support used for fixing a liquid level sensor and a wiring terminal used for wiring of theliquid level sensor and transmitting detection signals to the controller; the turnover table is further connected with a driving mechanism, and the driving mechanism drives the turnover table to do reciprocating turnover motion with the base as the fulcrum. The detection device adopts a turnover type motion structure, the blocking influence of a heating pipe is avoided, and the stable and rapid full-pipe-section movement of the floater is realized by utilizing the self weight, so that the detection of the performances such as the precision of the liquid level sensor is completed; the detection device further has the advantages of being convenient to operate, low in cost and the like, and compared with traditional motor driving, the pneumatic or hydraulic driving mechanism adopted by the detection device can effectively avoid electric interference and improve the safety and stability of equipment.
Owner:HEFEI BANGLI ELECTRONICS
Spaceborne equipment isolation and security system
ActiveCN107483099BAvoid electrical interferenceAchieve stabilityBatteries circuit arrangementsVolume/mass flow measurementInterference (communication)Electrical battery
Owner:CHANGGUANG SATELLITE TECH CO LTD
Anti-static anti-interference PVC data line and its preparation method
ActiveCN111899928BImprove anti-staticImprove wear resistanceCommunication cablesInsulated cablesFiberAnti jamming
The invention discloses an anti-static and anti-interference PVC data line and a preparation and molding method thereof, comprising a plurality of twisted inner protective wires and an outer protective layer wrapping the inner protective wires; the inner protective wires include wires The body, the outer surface of the wire body is sleeved with an inner protective sleeve, the outer surface of the inner protective sleeve is sleeved with an outer protective sleeve, and there is a gap between the inner protective sleeve and the outer protective sleeve, and the outer wall of the inner protective sleeve The inner wall of the outer protective sheath is fixed by connecting strips and the annular array of connecting strips is arranged in the gap, and the outer surface of the outer protective sheath is wrapped with a metal shielding layer; the outer protective layer is wrapped with a fiber layer from the inside to the outside , insulation layer, electromagnetic shielding layer and outer sheath. The data line prepared by the invention has good antistatic properties and anti-electromagnetic interference, so that the data line is suitable for long-term use in some strong electromagnetic environments.
Owner:浙江海宁和金电子科技有限公司
Intelligent power module and manufacturing method thereof
PendingCN113555316AAvoid electrical interferenceCut off contactSemiconductor/solid-state device manufacturingSolder maskLight guide
The invention relates to an intelligent power module and a manufacturing method thereof, the intelligent power module comprises a substrate provided with a solder mask layer, a sealing compound and a chip provided with a metal column, the sealing compound is arranged on the substrate in a mode of being in contact with the solder mask layer, and a plurality of cavities formed based on the contour shape of a light-transmitting assembly are arranged in the sealing compound. A metal column consistent with the light-transmitting assembly in outline shape is inserted into the cavity in the mode that soldering paste at the end of the metal column makes contact with a connecting pad in the cavity, a photosensitive cavity communicated with a glue injection channel is formed in the light-transmitting assembly, and the glue injection channel is formed in one end of the light-transmitting body in the mode of being communicated with the outside. And the photosensitive cavity is arranged at the other end of the light-transmitting main body in a manner that the contact area with the outside is not less than 50% of the cross sectional area of the light-transmitting main body. The plurality of light guide grooves, the glue injection channel and the photosensitive cavity are arranged in the light-transmitting body, so that the photosensitive cavity can be connected with the light-transmitting body and removed at the same time after being cured, the retaining probability of the photosensitive glue is reduced, and the packaging efficiency of the intelligent power module is improved.
Owner:佛山慧鑫众创科技有限公司
A transformer internal discharge pattern recognition method and fault diagnosis system
ActiveCN105203937BAvoid interferenceUniqueness guaranteedTesting dielectric strengthTransformerEngineering
The invention provides an internal discharge mode recognition method for a transformer, which is characterized in that: a singularity index of a signal waveform is extracted from a discharge acoustical signal of a transformer with a known internal fault; singularity indexes of signal waveforms corresponding to various discharge modes are collected, and an acoustical signal feature library for various discharge modes is established; the waveform of a discharge acoustical signal of the monitored transformer is monitored and obtained, and the singularity index of the signal waveform is extracted; the singularity index of the signal waveform of the discharge acoustical signal of the monitored transformer is compared with the acoustical signal feature library, and if the singularity index of the signal waveform of the discharge acoustical signal of the monitored transformer is the same as the singularity index in the feature library, the corresponding discharge mode is determined. The invention further provides an internal discharge fault diagnosis system for the transformer, which is based on the method. According to the method, the internal discharge acoustical signal of the transformer is precisely and stably monitored, the internal discharge mode recognition is performed accurately, and a fault can be found in time through analysis and process of the monitored acoustical signal.
Owner:国网江西省电力有限公司南昌供电分公司 +1
Method of assembling a lower electrode mechanism for welding and lower electrode mechanism for welding
InactiveCN113118605AAccurate detection accuracyThe connection is tight and firmResistance electrode holdersWelding/cutting media/materialsElectric machineryStructural engineering
The present invention reliably prevents the generation of welding defective products while minimizing and simplifying a lower electrode mechanism used in combination with an upper electrode mechanism. In a method of assembling a lower electrode mechanism, after a support tube and an electrode holder are integrally assembled, a cylindrical assembly case is inserted into the support tube from the bottom to align an elongated hole of the support tube with an elongated hole of the assembly case to assemble them. The rod assembly is inserted into the tube from the upper part of the electrode holder to fix the rod assembly inside of the assembly case in the support tube. The lower end of the rod of the rod assembly is placed to a position visible through the elongated hole of the support tube. A protruding bar is inserted into the support tube through the elongated hole of the support tube, the base end of the protruding bar is fixed to the lower end of the rod, and the slide sensor is attached to the support tube while the distal end of the protruding bar and detector of the slide sensor are connected.
Owner:SMK CO LTD
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