14results about How to "Reduce coupling interference" patented technology

The invention belongs to the field of sensors, and particularly relates to a wearable composite sensor for strain and positioning, which comprises a strain identification module and a position identification module, when the position identification module is not subjected to external force, the sensitive layer and the metal electrode layer are not in contact with each other, and a conductive path is not generated; when the sensitive layer is subjected to pressure of interphalangeal joints through the lantern ring, the sensitive layer at the pressed part penetrates through the inert gas spacing layer to be in contact with the metal electrode layer, the first electrode and the output electrode form a conductive path, and a position signal is generated through the microstructure substrate; when a finger is bent, the strain sensing module transmits bending stress to the sensitive layer through the lantern ring, and when the sensitive layer is subjected to the bending stress, the resistance value between the first electrode and the second electrode changes to generate a strain signal. The sensor disclosed by the invention is simple in structure, simple in preparation process, high in identification accuracy and high in strain sensing sensitivity.

The invention relates to the technical field of display, in particular to a display panel and a display device. The display panel comprises a first substrate and a second substrate which are oppositely arranged; the first substrate comprises a plurality of scanning lines, a plurality of data lines and a plurality of touch lines, and the scanning lines and at least part of the data lines intersect in an insulated mode to define a plurality of pixel opening areas; the display panel further comprises a plurality of sub-pixels, and the sub-pixels correspond to the pixel opening areas. The sub-pixel comprises a pixel electrode; the sub-pixels comprise blue sub-pixels, pixel opening areas corresponding to the blue sub-pixels are first pixel opening areas, and the vertical projection of the touch lines on the plane where the first substrate is located partially overlaps with the vertical projection of the first pixel opening areas on the plane where the first substrate is located; the vertical projection of part of the data lines on the plane where the first substrate is located is partially overlapped with the vertical projection of the first pixel opening area on the plane where the first substrate is located. The penetration rate of the display panel is improved, and the display effect is improved.

The invention discloses an engine ignition electric nozzle discharge voltage fault early warning method and system, and the method comprises the steps: obtaining the sampling data of the discharge of an ignition electric nozzle, and the sampling data comprise a voltage signal and a current signal; de-noising processing is carried out on the sampled data according to a set filtering rule, and the set filtering rule comprises the steps that low-pass filtering or band-pass filtering processing is carried out on the sampled data through a multiply-accumulate operation mode by adopting a set transfer function; analyzing and processing the de-noised data to obtain each spark performance parameter, wherein each spark performance parameter comprises spark energy, ignition voltage and ignition frequency; and each spark performance parameter carries out fault early warning on the ignition electric nozzle through the fault prediction model. The discharge voltage signal and current signal of the ignition electric nozzle are analyzed and processed to obtain each spark performance parameter, fault early warning of the ignition electric nozzle is carried out according to each spark performance parameter, and the problems of each spark performance test and fault early warning of the ignition electric nozzle are solved.

The invention provides a surface acoustic wave temperature sensor, a manufacturing method and a demodulation system, and belongs to the technical field of sensors. The sensor comprises a piezoelectric substrate, four groups of interdigital transducers formed on the piezoelectric substrate, four groups of reflecting gratings and a group of planar antennas, wherein the surface of the piezoelectric substrate between the two groups of interdigital transducers is covered with a temperature sensitive film, and the two groups of reflecting gratings, the two groups of interdigital transducers, the temperature sensitive film and the piezoelectric substrate form a detection resonance area; the other two groups of interdigital transducers, the other two groups of reflecting gratings and the piezoelectric substrate form a reference resonance region; an isolation groove is formed in the piezoelectric substrate between the detection resonance area and the reference resonance area; and one end of the planar antenna is connected with the group of interdigital transducers in the detection resonance area, and the other end of the planar antenna is connected with the group of interdigital transducers in the reference resonance area. According to the invention, differential compensation of common-mode interference is realized, propagation of surface acoustic waves of the detection resonance area to the reference resonance area is blocked through the isolation groove, and coupling interference between the two resonators is reduced.

The application provides a cross-band coupling interference suppression structure, a suppression system and a suppression method. In the cross-band coupling interference suppression structure, a low-frequency antenna is fixed at a first height position above a frequency selective surface and used for transmitting a low-frequency signal; a high-frequency antenna unit is fixed at a second height position below the frequency selective surface and used for transmitting a high-frequency signal; the frequency selective surface is used for reflecting the low-frequency signal and transmitting the high-frequency signal; and a reflection layer is arranged below the low-frequency antenna unit and used for reflecting the high-frequency signal. The application sets the frequency selective surface capable of transmitting the high-frequency signal and reflecting the low-frequency signal in the cross-band structure, enhances the radiation performance of the low-frequency signal of the low-frequency band antenna by reflecting the low-frequency signal, keeps the high-frequency band antenna electromagnetically transparent, avoids introducing additional insertion loss, reduces the cross-band coupling interference, and improves the working stability of the interference suppression structure.

The application discloses a multi-winding transformer, which comprises a framework and a magnetic core body fixed on the framework, and a first primary winding N1, a first secondary winding N2, a second secondary winding N3, a second primary winding N4 and a shielding layer winding N5 are sequentially and layer by layer wound on the framework; when the second primary winding N4 is wound, the second primary winding N4 is wound on the take-up end of the first primary winding N1, and the start end and the take-up end of the first primary winding N1 and the start end of the second primary winding N4 are all sleeved with an insulating sleeve for providing insulation protection. The primary winding is wound in a layered manner, and the secondary winding is wrapped, so that the magnetic resistance between the primary winding and the secondary winding is reduced through the structure of being tightly wrapped, the coupling interference caused by the distributed capacitance and the leakage inductance is reduced, the coupling coefficient between the primary winding and the secondary winding is improved, and the electromagnetic compatibility of the transformer is improved.

The invention discloses a cerebral stroke user-oriented nursing scheme assessment method and device. The method comprises the steps of obtaining a physiological parameter information set of a to-be-assessed nursing scheme of a cerebral stroke user and a physiological parameter information set of a conventional nursing scheme; performing data preprocessing on each physiological parameter information set to obtain a preprocessed physiological parameter information set of the to-be-evaluated nursing scheme and a preprocessed physiological parameter information set of the conventional nursing scheme; and performing nursing effect quantitative evaluation processing on the preprocessed physiological parameter information set of the to-be-evaluated nursing scheme and the preprocessed physiological parameter information set of the conventional nursing scheme to obtain an evaluation effect value of the to-be-evaluated nursing scheme.

The invention relates to a rudder model device for a rudder open water test, and the device is characterized in that a driving part is arranged in the middle of a support, and is connected with a connecting rod through a coupler; one end, far away from the driving piece, of the connecting rod penetrates through the wave suppression plate and the flow guide section to be in key connection with a key groove in the force balance rear cone; the rudder model comprises a rudder blade model and a rudder horn model, a front cone of the force measuring balance is inserted into the rudder blade model to be fixed, the rudder horn model is fixed on the wave suppression plate through a rudder horn mounting rod, and the force measuring balance coincides with the stress center of the rudder model; the device can be used for an open water test of a rudder, can be used together with a measuring device with a rod-type force-measuring balance, can reduce the heeling moment generated by the normal force of a rudder blade on the force-measuring balance, reduces the coupling interference of the heeling moment on signals such as the tangential force, the normal force and the steering torque of the rudder blade, improves the measurement precision of the hydrodynamic coefficient of the rudder, and improves the measurement accuracy of the hydrodynamic coefficient of the rudder. Reasonable design of a rudder structure and a rudderstock can be improved, then model selection of a steering engine is guided, and maneuverability of a ship is improved.

The present invention discloses a hybrid wing layout aircraft, belonging to the field of aviation equipment technology, which includes: a fuselage, wings, control surfaces, and a power unit for providing flight power and control, characterized in that: the power unit includes a left tilting power mechanism arranged on the left side of the fuselage, a right tilting power mechanism symmetrically arranged on the right side, and an adjustment mechanism that enables the two tilting power mechanisms to tilt synchronously, the left tilting power mechanism and the right tilting power mechanism are used to provide power and flight control during vertical flight and horizontal flight, the adjustment mechanism is used for the conversion of vertical flight and horizontal flight modes, and the control surface is used for roll and pitch control during horizontal flight. The aircraft layout mode of the present invention, as well as the setting of synchronous tilting and left and right tilting power mechanisms, successfully solve the problem that the rotor wing of the hybrid layout aircraft is difficult to control under aerodynamic interference.

The invention relates to a control follow-up PCB circuit for suppressing electromagnetic interference, and belongs to the technical field of PCB circuits. The structure layout is compact, the partition is clear, the processing technology requirement is met, the processing cost of the printed board is reduced, electromagnetic interference is effectively inhibited, unnecessary interference coupling between printed circuits is reduced, and the reliability of a system is improved.

The invention provides a water quality detection device and method based on friction nanometer power generation. The method is used for solving the problem that heavy metal ion type identification and concentration quantification are difficult to consider in an existing friction electric signal-based liquid detection method. Comprising a multi-electrode triboelectric sensor, and the multi-electrode triboelectric sensor comprises a substrate, a metal electrode and a triboelectric layer. More than two metal electrodes are arranged between the base plate and the triboelectric layer, the plurality of metal electrodes are sequentially arranged at equal intervals along the length direction of the base plate, during water quality detection, liquid drops are guided to slide along the length direction of the base plate, and the liquid drops sequentially pass through the plurality of metal electrode areas in the sliding process, so that the water quality is detected. And a time sequence-related friction electric signal is generated at each metal electrode. According to the invention, rapid and accurate detection of the type and concentration of heavy metal ions is realized, and the device is simple, portable, low in cost, self-powered, capable of realizing accurate concentration quantification in a wide concentration range, and extremely low in detection limit.

The utility model discloses a controller switch wake-up circuit, and belongs to the field of electronic circuits. Aiming at the problems of high power consumption and high cost of the existing switch wake-up circuit, the utility model provides a controller switch wake-up circuit which comprises a wake-up sub-circuit and an acquisition sub-circuit which are arranged in parallel, and one end of the wake-up sub-circuit and one end of the acquisition sub-circuit are respectively connected with a switch signal; the input end of the wake-up sub-circuit is a switching signal, and the output end is a wake-up source signal for waking up the single-chip microcomputer. The input end of the acquisition sub-circuit is a switching signal, the output end of the acquisition sub-circuit is an acquisition signal of the switching signal, and a wake-up source signal of the wake-up sub-circuit and the acquisition signal of the acquisition sub-circuit are respectively connected with the single chip microcomputer. Through the arrangement of the wake-up sub-circuit, on one hand, the power consumption of the system is obviously reduced, and on the other hand, the wake-up sub-circuit can connect a plurality of switch signals in parallel to serve as a wake-up source signal to be input to the singlechip for wake-up, so that the number of GPIO (General Purpose Input / Output) ports of the singlechip is reduced, the hardware cost is reduced, and the compatibility is improved.

The present invention discloses an antenna system, including: a bridge, an upper metal ground, an upper substrate, a lower substrate, a lower metal ground, a radiation patch, a mode converter, a circular waveguide, and a metal via; the antenna system is a multi-layer board structure, which is an upper metal ground, an upper substrate, a lower substrate, and a lower metal ground from top to bottom; the radiation patch is located on the upper side of the upper substrate, and the mode converter is placed above the radiation patch and connected to the circular waveguide above it; the bridge constitutes a feeding network, and the two ports of the bridge are located between the upper substrate and the lower substrate. The feed antenna system of the present invention can achieve wideband and dual circular polarization in the millimeter wave frequency band, ensure that the transceiver port has good isolation, and realize the mode conversion of the microstrip antenna to the circular waveguide. The structure is simple and efficient, and the circular polarization performance is not changed. It can be used as a feed source for various types of antennas.

This invention relates to the field of damage detection technology, and in particular to an AI-based method and system for detecting structural damage in supercapacitors. The method includes: acquiring multimodal response data; constructing operating condition labels by combining operating condition parameters; generating reference response data based on the operating condition labels; comparing the multimodal response data with the reference response data to construct a multimodal residual field; and performing structural damage identification by combining the unit topology diagram. This method helps to distinguish normal operating condition fluctuations caused by temperature fluctuations, changes in state of charge, pulse load changes, and equilibrium deviations from abnormal responses caused by structural damage, reducing the impact of operating condition coupling interference on the identification results, and making abnormal features related to structural damage more prominent. This improves the stability and accuracy of online structural damage identification, early localization, and damage type determination.