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42results about How to "Avoid electrical interference" patented technology

Display panel and preparation method thereof and display device

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

Internal discharge mode recognition method and fault diagnosis system for transformer

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

Electro-optical distance measurement device

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

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

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

Atomization device used for clothes treatment equipment and clothes treatment equipment

The invention belongs to the technical field of clothes treatment, and aims at solving the problem that if an atomization device in existing clothes treatment equipment adopts a split structure, the installation difficulty is high. Therefore, the invention provides an atomization device used for clothes treatment equipment and the clothes treatment equipment. The clothes treatment equipment comprises a clothes containing cavity, the atomization device comprises a first module, a second module and an atomization generator, and the atomization generator is arranged between the first module and the second module. An outlet of the atomization generator faces the interior of the clothes containing cavity, a connecting protrusion is arranged on the first module, a connecting groove is formed inthe second module, a chamfer structure is arranged on the side, facing the connecting groove, of the connecting protrusion, the chamfer structure is arranged to be capable of allowing the connecting protrusion to smoothly enter the connecting groove, and therefore the connecting protrusion is connected with the connecting groove. According to the atomization device and the clothes treatment equipment, the installation difficulty of the atomization device in the clothes treatment equipment can be reduced, and the installation efficiency can be improved.
Owner:QINGDAO HAIER WASHING ELECTRIC APPLIANCES CO LTD +1

Turnover type liquid level sensor detection 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

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

Intelligent power module and manufacturing method thereof

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

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
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