425results about How to "Reduce crosstalk" patented technology

The invention discloses an electrical cabinet with strong anti-electromagnetic interference capability, and relates to the technical field of electrical cabinets, the electrical cabinet comprises a cabinet body and further comprises a protection device, a sealing door slidably penetrates through the right side of the cabinet body, a moving hole is formed in the front side of the sealing door, and a limiting hole is formed in the front side of the sealing door. The protection device comprises an operation hole, an operation rod, a T-shaped rod, a protection rod, an L-shaped plate, a filter, a reset spring and a protection disc, the sealing door moves to enable the limiting hole to be aligned with the T-shaped rod, and after the T-shaped rod is aligned with the limiting hole, the T-shaped rod moves in the direction away from the protection rod under the elastic force effect of the reset spring; the T-shaped rod moves in the direction away from the protection rod to make contact with the inner wall of the limiting hole and restore limiting of the sealing door, the sealing performance of the cabinet body is kept through the L-shaped plate, the influence of external electromagnetic interference can be prevented, the equipment failure rate is reduced, and therefore the usability of the whole system is improved.

The invention provides a method for testing the dynamic strain of the surface of a rotating body in an electromagnetic environment. The method comprises the following steps: constructing a bridge by using strain gauges and acquiring dynamic characteristic data of the rotating part under actual constraint conditions; performing simulation calculation according to the dynamic characteristic data, and determining the optimal pasting position of the strain gauge; pasting a strain gauge and formulating a wiring scheme of a strain gauge wire; the strain gauge is connected with a voltage signal amplifier, the amplified signal is connected with a data acquisition system through a conductive slip ring, and the amplified strain signal is recorded and processed; acquiring strain signals in real time and taking the strain signals as test data, and performing whole-course test in a full-rotating-speed range to complete dynamic strain test on the surface of the rotating body. The system has high sensitivity, the sensitivity and the measurement precision of the system are improved through full-bridge configuration, larger output signals are provided, the full bridge can achieve temperature compensation through symmetrical circuit design, and the system has good linear output characteristics and facilitates signal processing and analysis within the strain range.

The invention is suitable for the technical field of radars, and provides a radar control method and device, terminal equipment and a computer readable storage medium, and the method comprises the steps: determining a target receiving channel according to echo signals received by each receiving channel; wherein the target receiving channel is a receiving channel of which the received echo signal is an echo signal reflected by a high-reflection object; adjusting a transmitting channel group according to the target receiving channel; wherein the transmitting channel corresponding to the target receiving channel and the transmitting channel corresponding to the non-target receiving channel are located in different transmitting channel groups; and controlling the transmitting channels to re-transmit the detection signals according to the adjusted transmitting channel groups. The transmitting channel corresponding to the target receiving channel and the transmitting channel corresponding to the non-target receiving channel separately transmit the detection laser, so that crosstalk of high-energy reflection echoes generated by a high-reflection object to reflection echoes of a non-high-reflection object can be effectively reduced, and the detection accuracy of the laser radar is improved.

The invention discloses a display panel, a display device and a preparation method of the display panel. The display panel comprises a substrate, an isolation structure and a light emitting device layer. The first film layer, the second film layer and the third film layer are arranged to form an isolation structure, and the orthographic projection of the first film layer close to the substrate on the substrate is located in the orthographic projection of the second film layer on the substrate. The extension distances corresponding to at least two light-emitting units are different, the extension distances of the isolation structures corresponding to part of the light-emitting units are larger, and due to the fact that the peripheral sides of the first electrodes are in lap joint with the third film layers of the isolation structures, the lap joint area of the first electrodes of the corresponding light-emitting units with the larger extension distances and the third film layers of the isolation structures is larger; therefore, the overlapping impedance between the part of the first electrode and the isolation structure is reduced, and the light-emitting effect of the light-emitting unit and the use performance of the display panel are improved.

The invention relates to the technical field of flexible ultrasonic transducers, and discloses a wearable flexible ultrasonic transducer for breast cyst screening. The objective of the invention is to solve the problems of low array element density, limited sound wave transmission energy, low imaging effect resolution, no matching layer or shielding of the matching layer, large error caused by analysis of an ultrasonic transducer, inconformity with a KLM model, incapability of realizing high-efficiency ultrasonic capacity transmission, low ultrasonic transducer bandwidth, low resolution, low cost and the like in the prior art. And high-quality imaging is difficult to realize. The flexible wearable ultrasonic transducer is sequentially provided with an electrode substrate, a backing layer, a piezoelectric layer, a first matching layer, a patch and a second matching layer from top to bottom, the acoustic function is enhanced, the flexible ultrasonic transducer which is high in density, free of shielding of the matching layer, high in bandwidth, capable of achieving two-dimensional and three-dimensional multi-dimensional imaging and capable of achieving large-range curvature conformal is developed, and the flexible ultrasonic transducer can be used for long-time continuous screening of breast cysts.

The invention discloses a wavelength division multiplexing-based all-fiber mirror image frequency sweeping interference distance measuring device and method, and relates to the technical field of absolute distance measurement. The objective of the invention is to solve the technical problems in the prior art that frequency spectrum aliasing, frequency sweep nonlinearity, Doppler effect and dispersion mismatch occur in frequency sweep interference measurement, and the measurement precision, the measurement efficiency and the reliability of an all-fiber mirror image frequency sweep interference ranging system cannot be ensured. According to the technical scheme provided by the invention, the wavelength division multiplexing-based all-fiber mirror image frequency sweeping interference distance measuring device comprises a laser unit used for outputting frequency sweeping light; the measurement interferometer light path is used for generating a measurement signal according to the sweep frequency light; the auxiliary interferometer light path is used for generating an auxiliary signal according to the sweep frequency light; the gas chamber calibration light path is used for carrying out auxiliary interferometer light path calibration according to the sweep frequency light; and the data acquisition and processing module is used for obtaining a distance measurement result according to the measurement signal, the auxiliary signal and the calibration signal. The method is applied to the work of all-fiber mirror image frequency sweeping interference distance measurement.

The invention relates to the technical field of audio noise reduction, in particular to an audio noise reduction method and system based on deep learning. The method comprises the following steps: acquiring original audio and sound production equipment operation data associated with the original audio; invalid audio elimination is carried out on the original audio, so that effective audio is generated; carrying out audio time alignment on the effective audio so as to generate a preprocessed standard audio; performing audio output mode detection on the preprocessed standard audio and the sound production equipment associated with the original audio to generate single-equipment output audio and multi-equipment output audio; audio period regular segmentation is carried out on single-device output audio, and single-device short-period output spectrum data and single-device long-period output spectrum data are generated. According to the invention, through invalid audio elimination, time alignment, layered noise extraction and abnormal noise identification, the accuracy and real-time performance of the noise reduction effect are improved.

The present invention discloses a low crosstalk optoelectronic co-sealed three-axis integrated transceiver module and an optical fiber gyroscope. By arranging the light source assembly, the first to sixth beam splitting prisms, and the lithium niobate thin film waveguide chip, the light signal's splitting, beam combining, polarization, and modulation functions are completed. On this basis, by designing three detectors on the transmission path of the optical signal to be measured, the optical signal to be measured can be detected and photoelectrically converted. Since the optical signal to be measured carries the information of the measured current, the measured current can be finally obtained by analyzing the electrical signal output by the detector through the processing circuit. Through the above scheme of the present invention, the integration of the optical path and the circuit part is realized, forming a three-axis optical and optical receiving and transmitting circuit and an optoelectronic co-sealed design, realizing a three-axis integrated structural design and transceiver function, and having the advantages of miniaturization, low crosstalk, high integration, and high reliability.

The invention relates to the technical field of PCBs, in particular to a method and system for automatically adjusting the line spacing in PCB design and computer equipment. According to the invention, crosstalk between the adjacent signal lines is effectively reduced by reasonably adjusting the distance between the component and the signal line, impedance matching of the signal lines is better controlled by considering electrical characteristic information, and the line distance in PCB design is adjusted by obtaining the characteristic information of the component, so that the impedance matching accuracy of the signal lines is improved. The interference is reduced, the signal integrity is improved, the electrical performance and the reliability are improved, the crosstalk between the signal lines is effectively reduced by calculating the actual distance between the reference line segment and the component pin, the impedance of the signal lines can be ensured to be matched with the component by considering the pin characteristics and the electrical characteristics, and the reliability of the component is improved. Through accurate analysis of the size and characteristics of the middle line segment group, crosstalk between adjacent signal lines can be effectively reduced, coupling of an electromagnetic field can be reduced through a reasonable line spacing, and the definition of signals is ensured, so that the signal transmission efficiency is improved, and the reflection phenomenon is reduced.

The invention discloses a miniature zero differential type double-flow transmission gear reduction box which comprises a box body shell, a straight transmission gear set, a steering transmission gear set, a first planetary differential mechanism, a second planetary differential mechanism, a first output gear set and a second output gear set. The straight transmission gear set, the first planetary differential mechanism and the first output gear set are arranged on one side in the box shell, and the steering transmission gear set, the second planetary differential mechanism and the second output gear set are arranged on the other side in the box shell. The first planetary differential mechanism and the second planetary differential mechanism are coaxially arranged and arranged at the two ends of the sun gear shaft correspondingly. The miniature zero differential type double-flow transmission gear reducer can be installed on a miniature crawler-type power platform, has the advantages of being small in size and high in universality, overcomes the defect that crosstalk exists in straight moving power input and steering power input, and achieves high-precision and high-stability rotating speed and torque output of the two extended output shafts.

The invention provides a miniature LED device preparation method, a miniature LED device and a display device. The method comprises the following steps: obtaining a micro LED structure which comprises a micro LED unit array; an isolation sub-structure array is arranged on the surface of the light emitting side of the micro LED structure, and each isolation sub-structure comprises a reflecting material layer and a first protection layer arranged on the side wall of the reflecting material layer; a refraction material layer is arranged on the top surface of each isolation substructure, so that the refraction material layer covers the top surface of the reflection material layer and the top surface of the first protection layer, each isolation substructure and the corresponding refraction material layer form an isolation structure, and a containing space is formed between every two adjacent isolation structures; all the accommodating spaces form an accommodating space array corresponding to the micro LED unit array, and the difference value between the refractive index of the refractive material layer and the refractive index of the first protective layer is greater than a preset value; and filling quantum dots in the accommodating space array to form a quantum dot array to obtain the micro LED device.

The invention relates to an optical waveguide device and a preparation method thereof, an AR near-to-eye display device and application thereof, a metasurface structure layer is stacked on the outer surface of the coupling-in end of the optical waveguide device, and light emitted by a light source device is directly or indirectly coupled into an optical waveguide through the metasurface structure layer to be propagated. Wherein the metasurface structure layer is configured to perform phase modulation on a first light beam emitted to the metasurface structure layer, so that a second light beam emitted from the metasurface structure layer has collimation and directionality. The light entering the optical waveguide has collimation and directionality, so that the coupling efficiency of light is improved, and the light energy utilization rate and the display brightness are improved. The optical waveguide device and the light source device form an AR near-to-eye display device, and the AR near-to-eye display device can be applied to naked eye 3D light field display. The metasurface structure layer not only realizes collimation and directionality of emergent light of the display panel and improves light efficiency and brightness, but also is favorable for realizing lightening and thinning of a display ray machine.

The invention discloses a light field display system based on collimated light and multiple light control, and relates to the field of three-dimensional display. The system is provided with a diaphragm array layer which can limit the light emitting angle of a light source layer; the square lens array layer is arranged, light emitted by the light source layer can be converted into collimated light, and the directivity of the light is guaranteed; the orthogonal prism sheet layer is arranged, so that light rays are homogenized in two dimensions, and brightness balance of all parts of a final display area is ensured; pixel light rays are projected to different positions in a space through the light control grating layer, so that left and right eyes can see different image information respectively to form stereoscopic vision; the unidirectional diffusion layer is arranged above the light control grating layer, light rays are diffused in a unidirectional manner, and the same three-dimensional effect is generated at different positions in the vertical direction; and reverse compensation is carried out through a diffusion error compensation algorithm, so that observers at different positions can obtain consistent visual experience, and finally, a three-dimensional light field display effect with uniform brightness and low crosstalk is presented.

The utility model discloses a packaging structure for reducing high-speed signal crosstalk around AC coupling capacitors, a circuit board body comprises AC coupling capacitor pads arranged in pairs, and reference planes of the AC coupling capacitor pads are hollowed on a GND layer adjacent to the AC coupling capacitor pads; high-speed signal line via hole bonding pads are arranged at the two ends of each pair of AC coupling capacitor bonding pads, grounding holes are formed in the peripheries of the AC coupling capacitor bonding pads and the high-speed signal line via hole bonding pads, and the grounding holes correspond to the AC coupling capacitor bonding pads and the high-speed signal line via hole bonding pads in a one-to-one mode. The grounding holes are formed around the AC coupling capacitor bonding pad and the high-speed signal line via hole bonding pad, the grounding holes can effectively absorb electromagnetic radiation of high-speed signals, so that crosstalk is reduced, the reference plane of the GND layer adjacent to the AC coupling capacitor is hollowed out, the grounding holes additionally arranged nearby can reduce a backflow path of plane jumping, and the crosstalk is reduced. And the signal flows back through a nearby grounding hole during layer change, so that crosstalk is further reduced.

An electric connector comprises an insulating body and a first terminal module. The first terminal module comprises a plurality of first conductive terminals and a first grounding piece, each first conductive terminal comprises a first main body part and a first elastic arm, and the first elastic arm comprises a first butt joint part. The plurality of first conductive terminals comprise a first signal terminal group, a first grounding terminal and a second grounding terminal. The first grounding piece comprises a first body part, a first middle part, a first abutting elastic arm and a second abutting elastic arm. The first middle part is provided with a first contact lug contacted with the first elastic arm of the first grounding terminal and a second contact lug abutted against the first elastic arm of the second grounding terminal. The first abutting elastic arm comprises a first abutting part which abuts against the first elastic arm of the first grounding terminal. The second abutting elastic arm comprises a second abutting part which abuts against the first elastic arm of the second grounding terminal.

The invention relates to the technical field of laser, in particular to an on-chip series edge-emitting semiconductor laser array and a process method. The on-chip series edge-emitting semiconductor laser array sequentially comprises a semi-insulating substrate, a non-doped buffer layer, a P-type heavily doped layer, a P-type tunnel junction layer, an N-type tunnel junction layer, an N-type cladding, an N-type waveguide layer, an active region, a P-type waveguide layer, a P-type cladding and a P-type cover layer from bottom to top. Table surfaces on the two sides of each light-emitting unit are deeply etched to the P-type heavily doped layer, and a lateral current diffusion suppression groove is formed between the bottoms of any two adjacent light-emitting units. An on-chip series edge-emitting semiconductor laser array structure is adopted, the parasitic effect is reduced through coplanar electrode design, upper and lower electrodes can be prepared through a single process to reduce the cost, lateral current diffusion suppression grooves are formed between light-emitting units to reduce crosstalk, the light-emitting units are connected in series to work under the same injection current, and the light-emitting efficiency is improved. The requirements of a driving circuit can be effectively reduced, and light-emitting uniformity is improved.

The invention, which relates to the technical field of the optical receiver, discloses a silicon optical transceiver chip comprising an oblique incidence grating coupler, a symmetrical bidirectional angle multimode interference coupler, a micro-ring modulator, a micro-ring filter, and a single-input photoelectric detector. Each oblique incidence grating coupler is composed of a grating area and a spot-size converter, a certain coupling inclination angle is adopted by a grating etching part through an optical fiber, optical signals are obliquely incident into a grating coupling area, the optical signals are converted into single-mode conditions through the spot-size converters and transmitted into an optical waveguide, and then the input and output functions of the optical signals are achieved. According to the invention, a plurality of micro-ring modulators are used for converting electric signals into optical signals for information transmission, and a receiving part is combined with a micro-ring filter to realize a secondary filtering function, so that the crosstalk problem between two adjacent optical information transmission channels can be reduced.

The invention discloses a display panel and a display device. The display panel comprises a substrate, an isolation structure, a light emitting unit and a first packaging layer. The first packaging layer comprises a packaging part, the packaging part comprises a first segment and a second segment which are connected with each other, the first segment is located in the isolation opening, and the second segment is located on the side, facing the isolation opening, of the isolation structure; the surface of one side, deviating from the substrate, of the first segment and the surface of one side, deviating from the isolation structure, of the second segment are at least partially connected to form a gap space; the isolation structure comprises a first sub-layer and a second sub-layer which are stacked, and the first sub-layer is provided with a top surface deviating from the substrate; the length of the second sub-layer protruding out of the first sub-layer towards the isolation opening is a, the orthographic projection of the gap space on the substrate has a first boundary far away from the isolation structure, the orthographic projection of the top surface on the substrate has a second boundary, and the distance between the first boundary and the second boundary is b, bgt; a. The yield and the use performance of the display panel are improved.

The invention belongs to the technical field of integrated photonic devices, and discloses a total internal reflection light switch based on a phase change material and a use method thereof.The phase change material area is subjected to first pretreatment, the phase change material in the phase change material area is completely converted into an amorphous state from a crystalline state, and the phase change material in the phase change material area is subjected to second pretreatment; the difference value between the refractive index of the phase change material and the refractive index of the waveguide is greater than 0.6, and at the moment, the total internal reflection light switch is in a cross state; second pretreatment is carried out on the phase-change material area, the phase-change material in the phase-change material area is completely converted into a crystalline state from an amorphous state, the difference value between the refractive index of the phase-change material and the refractive index of the waveguide is 0-0.2, at the moment, the straight-through function of the total internal reflection optical switch is achieved, the power consumption of the optical switch is remarkably reduced, and the optical switch has a wide application prospect. Performance indexes of the optical switch are optimized, multi-mode optical signal transmission is achieved, and application of the optical switch in the fields of high-speed optical communication, optical interconnection and optical calculation is promoted.

The invention discloses a multi-channel holographic method based on a total-space dynamic switching metasurface. The method comprises the following steps: 1) constructing a nano-structure unit; 2) optimizing the structure parameters of the nano structure unit according to the incident light wavelength lambda; and 3) constructing a nano-structure array, wherein the nano-structure array comprises a plurality of nano-structure units. According to the invention, left-handed / right-handed circularly polarized light is set to be incident to the nano-structure array, and dynamic switching of four holographic channels is carried out by rotating a mask plate in a reflection space; in a transmission space, the relative positions of the two layers of nano-arrays are changed by translating the second layer of nano-structure array to obtain dynamic switching of the three holographic channels, and the seven holographic channels can be subjected to mutually independent and continuous phase regulation and control through the nano-bricks. According to the invention, full-space information utilization can be realized, multi-channel dynamic switching is realized, the information capacity of the device is increased, the functionality of the device is improved, and the device can be applied to the fields of large-capacity optical information storage and coding and the like.

The utility model relates to the technical field of electronic equipment, and discloses a circuit board and electronic equipment, the circuit board is provided with a differential signal hole group, and the hole group comprises a first signal hole pair and a second signal hole pair; wherein the two signal holes in the first signal hole pair are symmetrical about the first symmetry axis and located on different sides of the first symmetry axis, the first symmetry axis sequentially passes through the circle centers of the two signal holes in the second signal hole pair, and the first signal hole pair and the second signal hole pair are located on different sides of the first reference straight line respectively. The first reference straight line is perpendicular to the first symmetry axis. According to the circuit board and the electronic equipment provided by the invention, the crosstalk phenomenon between the differential hole pairs can be weakened, and the signal quality and the signal integrity are ensured.

The invention discloses a non-zero dispersion displacement ring core optical fiber based on groove assistance, and the non-zero dispersion displacement ring core optical fiber is a single-ring-core gradient refractive index ring core optical fiber, and comprises an annular fiber core, an annular groove, and an optical fiber cladding. The optical fiber cladding comprises a central cylinder, an annular fiber core, an annular groove interlayer and an outer optical fiber cladding, and all the layers have the same refractive index; the annular fiber core with the high refractive index is sleeved on the central cylinder, the annular fiber core and the annular groove interlayer are sleeved on the annular fiber core, the annular groove with the low refractive index is sleeved on the annular fiber core and the annular groove interlayer, and the outer fiber cladding is sleeved on the annular groove. The invention aims to provide a low-crosstalk optical fiber structure so as to meet the requirement of low-dispersion transmission in a plurality of orbital angular momentum modes.

The invention discloses a dense wavelength division multiplexing underwater wireless optical communication system, and the system comprises a transmitter which comprises a plurality of direct modulation semiconductor lasers with the wavelengths of lambda1, lambda2, lambda3,... lambdan, and a beam combining element, and is used for achieving dense wavelength division multiplexing in blue and green light wave bands; the receiver comprises a collimator and a diffraction grating, light is scattered into an irregular light spot after being propagated underwater for 20-200 meters, the light spot is collected by a receiving lens and compressed in the collimator, and the diffraction grating is used for demultiplexing and separating light with different wavelengths; and the digital signal processing module is used for capturing the optical signal by utilizing photomultiplication and converting the optical signal into an electric signal, the electric signal is captured by an oscilloscope, and signal synchronization, decoding and channel equalization are executed on a computer. By adopting the technical scheme provided by the invention, the signal transmission stability of communication under water with different turbidity is improved, and the transmission distance and the data rate are remarkably improved.

The invention relates to the technical field of microelectronic devices, and provides a flexible self-supporting vertical optical waveguide array and a preparation method and application thereof. According to the flexible self-supporting vertical optical waveguide array and the preparation method thereof, an ultraviolet-curable SU-8 polymer is used as an optical waveguide material, a vertical optical waveguide array is prepared on a substrate by using simple coating, photoetching and ICP etching processes, then a flexible supporting layer is prepared, and the substrate is removed, so that the flexible self-supporting vertical optical waveguide array is obtained. The flexible self-supporting vertical optical waveguide array provided by the invention can solve the photoelectric crosstalk problem of an image sensor, improves the detection sensitivity in a weak light environment, has excellent flexibility, and can realize conformal fitting with the surface of the image sensor; moreover, the flexible self-supporting vertical optical waveguide array does not depend on the pixel size of the image sensor, the preparation process is independent of the preparation process of the image sensor, the universality is high, and the flexibility is good.

The invention discloses a partition display system and method based on a polarization body holographic grating, and belongs to the technical field of display, and the system comprises a light source layer, a collimation optical layer, an electric control light diffusion layer, a polarization body holographic grating array layer and a liquid crystal display layer which are sequentially arranged from bottom to top; the light source layer can independently generate left-hand circularly polarized light and right-hand circularly polarized light; the collimating optical layer can convert light emitted by the light source layer into collimated light beams; the electric control light scattering layer has a transparent mode and a scattering mode which can be switched; the polarization body holographic grating array layer is formed by alternately arranging left-hand circular polarization gratings and right-hand circular polarization gratings; when the electric control light scattering layer is in a transparent mode, the liquid crystal display layer only performs rendering display on an area through which refracted light of the polarization body holographic grating array layer passes; and when the electric control light scattering layer is in a scattering mode, the liquid crystal display layer renders and displays all areas through which light passes. The invention has the advantages of high luminous efficiency utilization rate, low visual area crosstalk, ultra-thinness and the like.

The invention belongs to the field of batteries, and particularly relates to a lithium ion battery electrolyte and application thereof. The lithium ion battery electrolyte provided by the invention comprises the following components: an organic solvent, a lithium salt and an additive, the additive comprises a compound with a structure as shown in a formula I and / or a compound with a structure as shown in a formula II. The electrolyte provided by the invention can be used for optimizing SEI membrane components of the lithium ion battery, improving the cycle coulombic efficiency of the lithium ion battery, improving the high-voltage tolerance of an SEI membrane and improving the high-temperature and high-voltage cycle performance of the lithium ion battery. # imgabs0 #

The embodiment of the invention relates to the technical field of connectors, and particularly discloses a grounding terminal, a connector and electronic equipment, the grounding terminal comprises a first contact part, a first elastic arm part, a first holding part and a second contact part, one end part of the first contact part is used for being connected to a butt joint piece, the first elastic arm part is connected to one end of the first contact part, and the second elastic arm part is used for being connected to the butt joint piece. The first elastic arm part is provided with a first contact part and a second contact part, the first holding part is connected to one end, far away from the first contact part, of the first elastic arm part, the first holding part is used for being fixed on an insulation body and is used for being connected to a conductive piece, the second contact part is connected to the other end of the first contact part, and the second contact part is used for being connected to the conductive piece. Through the mode, the end part of the other end of the first contact part is used for being connected to the conductive piece through the second contact part, and stubs on the first contact part are eliminated to form an effective signal return path, so that crosstalk and resonance are reduced.

The invention relates to the technical field of semiconductors, in particular to a multiplexing-based optical computing chip and a design method thereof.The multiplexing-based optical computing chip comprises a computing area formed by crossing a first waveguide and a second waveguide, and the computing area comprises a branch waveguide connected with the first waveguide and the second waveguide, a beam splitting part, an intensity modulation part and a first signal conversion part are sequentially arranged on the branch waveguide, the beam splitting part is used for splitting optical signals in a specific proportion, the intensity modulation part is used for modulating the signal intensity of the optical signals into a specific value, and the first signal conversion part is used for setting or maintaining the optical signals in a specific mode; the specific mode means that the optical signal has a specific polarization direction and / or a specific order; the second waveguide is provided with a calculation unit for calculating the sum of the optical powers of the plurality of optical signals. According to the multiplexing scheme provided by the invention, the data processing amount of the optical computing chip can be improved.

The invention discloses a reverse design-based crossed waveguide structure, which comprises an integral lower cladding and a crossed waveguide main body structure, and is characterized in that the crossed waveguide main body structure is arranged above the integral lower cladding; the cross waveguide main body structure comprises a coupling area, an input waveguide and three output waveguides are distributed around the coupling area, the input waveguide and the three output waveguides are arranged perpendicular to the end face of the coupling area and connected with the center position of the coupling area, and the cross waveguide structure is high in integration level, high in transmittance and low in transmission loss and crosstalk. The invention further discloses a design method of the crossed waveguide, a direct binary search algorithm is adopted for the crossed waveguide structure, and the design method not only improves the integration level of the crossed waveguide structure and the transmissivity of the output waveguide, but also achieves lower transmission loss and crosstalk when different modes are input.

The invention discloses a microneedle electrode array-based monitoring device, which comprises a base, a plurality of microneedle electrodes, a top cover, a spring needle and a circuit module, and is characterized in that the bottom of the base comprises a plurality of holes, the microneedle electrodes are fixed through the holes, the spring needle corresponds to the microneedle electrodes in position, and the microneedle electrodes are fixed through the top cover. The spring needle is connected with the circuit module, the base and the top cover form a closed space, and the spring needle and the circuit module are arranged in the closed space. The embodiment of the invention can reduce crosstalk and improve the accuracy of a test result, and can be widely applied to the technical field of biological detection.