29 results about "Third wave" patented technology

The application discloses a wave divider, a wave combiner and an optical communication device, and belongs to the technical field of optical communication. The wave divider comprises a first filter device and a second filter device. The first filter device is used for dividing an input light beam into a first light beam and a second light beam, the first light beam is light of a first wave band, the second light beam comprises light of a second wave band and light of a third wave band, and the first wave band is located between the second wave band and the third wave band. The second filter device is used for dividing the second light beam into a first sub-light beam and a second sub-light beam, the first sub-light beam is light of the second wave band, and the second sub-light beam is light of the third wave band. The width of a first transition wave band range of the first filter device is less than the width of a second transition wave band range of the second filter device, and the first wave band at least partially coincides with the second transition wave band range. The wave combiner has the same device composition as the wave divider, and the transmission process of light is the reverse process of the wave divider. The wave divider and the wave combiner can improve the utilization rate of light.

A coated tool includes a base body and a coating film. The coated tool has a first surface with a rake face, a second surface with a flank face, and a third surface located between the first surface and the second surface and being a C surface or an R surface. The coating film includes a first coating film located on the first surface and / or a second coating film located on the second surface, and a third coating film located on the third surface. A wavenumber of a maximum Raman peak of the first coating film is a first wavenumber, a wavenumber of a maximum Raman peak of the second coating film is a second wavenumber, and a wavenumber of the maximum Raman peak of the third coating film is a third wavenumber. The third wavenumber is smaller than the first wavenumber and the second wavenumber.

The invention belongs to the field of polarization measurement, and particularly relates to a space solar spectrum magnetic field telescope based on multi-wave-plate polarization modulation, which comprises a telescope system, a relay system and a spectrum imaging system, the telescopic system comprises a first 1 / 2 wave plate, a 1 / 4 wave plate and a second 1 / 2 wave plate; when neither the first 1 / 2 wave plate nor the second 1 / 2 wave plate fails, the second wave plate is kept static, and the first wave plate and the third wave plate rotate in the same direction according to a preset different-speed asynchronous motion time sequence, so that the full-stokes component of the solar polarization spectrum is measured; when any one of the first 1 / 2 wave plate and the second 1 / 2 wave plate breaks down, the 1 / 4 wave plate is started, and the 1 / 4 wave plate and the other normally working 1 / 2 wave plate rotate in the same direction according to the re-planned different-speed asynchronous motion time sequence, so that the measurement of the full stokes component of the solar polarization spectrum is maintained. According to the invention, full Stokes measurement can be realized, and the blank of space solar vector magnetic field detection capability in China is filled.

Disclosed is a phase measurement device, comprising: a first wave plate, a first polarization splitting prism, a fourth wave plate, a retroreflector, a third wave plate, a reflector, a second wave plate, a polarizer, a second polarization splitting prism, a third polarization splitting prism, a first photoelectric detector, a second photoelectric detector, and a base, wherein the first to third polarization splitting prisms and the first and second photoelectric detectors are fixed on the base; the first to fourth wave plates are respectively arranged around the periphery of the first polarization splitting prism; the polarizer is arranged on an emitting surface of the third polarization splitting prism; the retroreflector is arranged on an outer side of the fourth wave plate; and the reflector is arranged on an outer side of the third wave plate. An interferometric signal is resolved to obtain a measurement light beam phase.

The invention discloses a double-emission-source delay time calculation method and device, equipment and a medium, and the method comprises the steps: firstly, setting that only a far emission source works, obtaining a first wave train of a casing wave excited by the far emission source and received by a first receiver, and obtaining a second wave train of the casing wave excited by the far emission source and received by a second receiver; then calculating a first moment when the head wave in the first wave train arrives and a second moment when the head wave in the second wave train arrives, and then obtaining a third wave train of the casing wave excited by the near-emission source and received by the first receiver and a fourth wave train of the casing wave excited by the near-emission source and received by the second receiver; and calculating a third moment when the head wave in the third wave train arrives and a fourth moment when the head wave in the fourth wave train arrives, thereby calculating the delay time of the double emission sources. The time difference between the head waves of the casing waves excited by the far emission source and the near emission source and the receiver is used as the emission delay time, so that the calculation complexity of the delay time of the double emission sources is effectively reduced.

The application discloses a corrugated plate spacing adjusting device, which comprises a guide fixing seat, a first wave crest clamping mechanism, a second wave crest clamping mechanism, a third wave crest clamping mechanism and a wave crest clamping groove. The first wave crest clamping mechanism, the second wave crest clamping mechanism and the third wave crest clamping mechanism are supported by the guide fixing seat, and the wave crest clamping groove is matched with the wave crest clamping mechanism to accommodate the wave crest of the corrugated plate, so that independent clamping of the wave crest of different corrugated plates is realized. The relative positions of the first wave crest clamping mechanism, the second wave crest clamping mechanism and the third wave crest clamping mechanism are moved, the distance between two corrugated plates is adjusted, the joint width of the two corrugated plates is synchronously adjusted, a plurality of wave crest clamping mechanisms are matched to prevent the corrugated plates from being separated, a stable supporting structure is provided, and the continuity and safety of assembly work are improved.

The application provides a dynamic pressure gas thrust bearing, a rotor assembly and a compressor. The dynamic pressure gas thrust bearing comprises a bearing shell (25), a top foil (21) fixed at one end on the bearing shell (25) and movable at the other end relative to the bearing shell (25), a wave foil mounting space formed between the top foil (21) and the bearing shell (25), a first wave foil (22), a second wave foil (23) and a third wave foil (24), the first wave foil (22), the second wave foil (23) and the third wave foil (24) are sequentially and spacedly arranged in the wave foil mounting space along the airflow direction, and the rigidity of the first wave foil (22) and the third wave foil (24) is greater than that of the second wave foil (23). According to the dynamic pressure gas thrust bearing, a secondary wedge structure can be formed on the surface of the top foil at high speed, and the carrying capacity and adaptive capacity of the bearing in a high-speed environment can be improved.

The utility model relates to the technical field of corrugated boards, in particular to a corrugated board with a honeycomb structure, which mainly solves the problems of low longitudinal compressive strength and poor buffering performance of a honeycomb paperboard in the prior art, and comprises a corrugated board body which comprises a surface layer, a middle layer and a bottom layer, the surface layer comprises a first surface layer, a second surface layer with a wave structure and a third surface layer with a wave structure, the second surface layer is provided with a second wave crest and a second wave trough, the third surface layer is provided with a third wave crest and a third wave trough, the lower surface of the second wave trough is compositely connected with the upper surface of the third wave trough, and the amplitude of the second wave crest is larger than that of the third wave crest; a plurality of grooves are concavely formed in the upper surface of the middle layer, the upper surface of the middle layer is in composite connection with the lower surface of the third surface layer, the third troughs are embedded in the grooves, and the upper surface of the bottom layer is in composite connection with the lower surface of the middle layer.

The invention belongs to the technical field of rubber mat connection of plate heat exchangers, and provides an anti-degumming rubber mat for a heat exchange plate. The anti-degumming pad comprises an anti-degumming pad main body and a sheet main body, the plate sheet main body is arranged on the anti-degumming pad main body and is used for being matched with a hanging groove in a heat exchange plate; the anti-degumming pad main body is provided with a first connecting arm and a second connecting arm; wherein the first connecting arm and the second connecting arm are arranged on one side of the anti-degumming mat main body; the plate sheet main body is provided with a rubber mat groove, a first wave crest, a first wave trough, a first connecting arm groove, a second wave crest, a second wave trough, a second connecting arm groove and a third wave crest; the rubber mat main body is connected with the first connecting arm and the second connecting arm; the rubber mat main body is arranged in the rubber mat groove; the first connecting arm groove and the second connecting arm groove are formed in the outer side of the rubber mat groove; the thickness of the rubber mat groove is equal to the thickness of the first connecting arm and the second connecting arm after compression; the first wave crest, the first wave trough, the second wave crest, the second wave trough and the third wave crest are sequentially arranged along the outer side wall of the plate sheet body.

A waveguide structure. In some embodiments, the waveguide structure, includes: a first waveguide (105), a second waveguide (120), and a third waveguide (125) on a substrate (115). The first waveguide (105) may be at a different height than the second waveguide (120). The waveguides may be configured to cause light to couple between the first waveguide (105) and the second waveguide (120), and between the second waveguide (120) and the third waveguide (125). The first, second, and third waveguides (105, 120, 125) may be composed of respective materials having a first index of refraction, a second index of refraction, and a third index of refraction respectively. The third material may include silicon and nitrogen. The second index of refraction may be greater than the first index of refraction, and less than the third index of refraction.

The application provides a fin and a heat exchanger with the same, the fin comprising: a first connecting section, a second connecting section and a third connecting section, the second connecting section being used for bending, the second connecting section having oppositely arranged first and second connecting ends, the first connecting end being arranged on the side of the second connecting end away from the third connecting section; along the length direction of the second connecting section, the second connecting section is in a straight strip structure before bending, and is in an arc strip structure after bending; the first, second and third connecting sections are all in a corrugated structure, the first connecting section has a first wave distance Fp1, the second connecting section has a second wave distance Fp2, and the third connecting section has a third wave distance Fp3; wherein, Fp2>Fp1 and Fp2>Fp3. Through the technical scheme provided by the application, the technical problem that the fin is inconvenient to bend in the prior art can be solved, the heat exchange performance of the product can be improved, the heat exchange area can be increased, and the corrosion resistance of the product can be improved.

The invention discloses an optical module. An absolute value of a wavelength interval between a first optical signal and a second optical signal is located in a first preset range. The light receiving component comprises a first lens and a light splitting assembly. The light splitting assembly comprises a substrate, a first wave plate, a second wave plate and a third wave plate, the first wave plate is located between the light emitting component and the first lens so that the first optical signal can be reflected and the second optical signal can be transmitted. The second wave plate is located on a reflection light path of the first wave plate, and the third wave plate is located between the second wave plate and the light receiving assembly. The first shell is provided with a storage groove, an adhesive layer is arranged between the first lens and the bottom face of the first shell, the thickness of the adhesive layer is located in a second preset range, and the difference value between the size of the storage groove and the size of the first lens is larger than a preset value so that the first lens can be actively coupled and attached to the first shell. The first lens is mounted on the first shell in an active coupling mode so as to adjust the optical signals reflected and transmitted by the first wave plate, so that the first optical signals and the second optical signals are separated.

The application relates to the lighting technical field, and particularly discloses a full-spectrum light source and a manufacturing method and application. The full-spectrum light source comprises a light source chip and encapsulating glue, and the encapsulating glue is mixed with compounded fluorescent powder; the light source chip is a first waveband piece with an emission peak value of 410-420 nm, a second waveband piece with an emission peak value of 430-440 nm, a third waveband piece with an emission peak value of 445-460 nm and a fourth waveband piece with an emission peak value of 465-475 nm; and the compounded fluorescent powder is blue-green fluorescent powder with an emission peak value of 490-500 nm, green fluorescent powder with an emission peak value of 525-535 nm and red fluorescent powder with an emission peak value of 650-660 nm. The full-spectrum light source has full coverage of 380-780 nm, good spectral continuity, no obvious wave peak and wave trough, uniform spectral proportion without serious disorder, strong color rendering and close to the sunlight spectrum.

The invention discloses an inverter switching time test method and device, equipment and a storage medium. The method comprises the following steps: acquiring a target power value, controlling the operation of electrical equipment based on the target power value, and putting a reactive load into work; respectively acquiring a first waveform and a second waveform of an alternating current input end and an alternating current output end of the inverter by utilizing acquisition equipment; after the contactor is disconnected, acquiring a third waveform and a fourth waveform of the alternating current input end and the alternating current output end of the inverter respectively by utilizing acquisition equipment; and obtaining an inverter input waveform based on the first waveform and the third waveform, obtaining an inverter output waveform based on the second waveform and the fourth waveform, and determining the switching time of the inverter according to the inverter input waveform and the inverter output waveform. According to the scheme, the dynamic characteristics of the switching process are precisely restored through dual-channel waveform acquisition, the response capability and the switching performance of the inverter in a power-off scene are effectively evaluated, and the method is suitable for performance testing of scenes such as a distributed optical storage system and household emergency power supply.

The invention provides a method and a device for determining the state of charge of a flow battery. Emitting multi-band detection laser to the electrolyte in the flow channel of the flow battery, and synchronously collecting scattered light signals and fluid parameters after being scattered by the electrolyte; determining a basic state of charge according to a first spectrum characteristic value of the second wave band laser in the collected scattered light signal; determining hydrodynamic characteristics according to the flow velocity and the viscosity, and correcting the basic state of charge by using the hydrodynamic characteristics to determine a first state of charge; determining the temperature of the electrolyte according to the spectral response difference characteristics of the first wave band laser and the third wave band laser in the scattered light signal; determining the concentration of the electrolyte according to a second spectrum characteristic value of the second wave band laser in the scattered light signal; and determining a target state of charge of the flow battery according to the first state of charge, the temperature of the electrolyte and the concentration of the electrolyte. Therefore, the accuracy of determining the charge state of the flow battery is improved.

Examples of fault location in a power transmission line connecting a first and a second terminal is described. In an example, arrival times of a first peak, a second peak, and a third peak of a travelling wave detected from measurements carried out at the first and second terminals is detected. A rise time associated with the first peak of the travelling wave is calculated. One of a first half and a second half of the power transmission line is identified, as having a fault, based on a comparison of the rise time. One of a first segment, a second segment, a third segment, and a fourth segment of the power transmission line is identified as having the fault. Length of the power transmission line is estimated. The fault location is estimated based on identification of one of the first, second, third, and fourth segments as having the fault.

The invention relates to the satellite internet technology, and provides a user service guarantee method, device and equipment, and the method comprises the steps: obtaining a first satellite set corresponding to a target user; determining a first wave position of the target user corresponding to each first satellite in the first satellite set, and forming a first wave position set corresponding to the target user; according to the first satellite set and the first wave position set, identifying a second satellite set and a second wave position set corresponding to the target user; acquiring a third satellite and a third wave position corresponding to the target user from the second satellite set and the second wave position set; adjusting the beam position priority of the third beam position according to the user priority of the target user; and adjusting the third satellites corresponding to the remaining second wave positions in the second wave position set. According to the embodiment of the invention, service guarantee can be carried out on users (especially high-priority users) with different service priorities.

The present application relates to the technical field of optical communication, and in particular to a wave splitter and a communication module. The wave splitter comprises a shell and a wave splitting assembly. A public port is formed on one side wall of the shell. First, second and third receiving ports are formed on two side walls adjacent to the public port. The wave splitting assembly comprises a pentagonal prism and first, second and third filters. An optical signal enters the pentagonal prism through the public port, is reflected and enters the first filter. The first filter filters out optical signals of a first wavelength and emits them through the first receiving port. The remaining optical signals are reflected and enter the second filter. The second filter filters out optical signals of a second wavelength and emits them through the second receiving port. The remaining optical signals are reflected and enter the third filter. The third filter filters out optical signals of a third wavelength and emits them through the third receiving port. The above structure reduces the loss of optical signals and improves the reliability of wave splitting.

The invention provides an optical module which comprises a wave division assembly, a first reflection sheet, a first reflection piece and a second reflection piece, the wave division assembly comprises a first substrate, a first wave plate, a second wave plate, a third wave plate, a fourth wave plate, a fifth wave plate, a sixth wave plate, a seventh wave plate and an eighth wave plate, the fifth wave plate is located on a transmission light path of the first wave plate, and the sixth wave plate is located on a transmission light path of the eighth wave plate. The second wave plate is located on a reflection light path of the fifth wave plate, the sixth wave plate is located on a reflection light path of the second wave plate, the third wave plate is located on a reflection light path of the sixth wave plate, the seventh wave plate is located on a reflection light path of the third wave plate, the fourth wave plate is located on a reflection light path of the seventh wave plate, and the eighth wave plate is located on a reflection light path of the fourth wave plate; the first reflection sheet is located between the second wave plate and the second light receiving assembly, the first reflection piece is located between the seventh wave plate and the first light receiving assembly, the second reflection piece is located between the eighth wave plate and the third light receiving assembly, and received light signals are reflected and transmitted among the multiple wave plates so as to achieve wave splitting.

The application provides a method and device for determining an inertia time constant of a generator set. The method comprises: performing step disturbance on a terminal voltage of a to-be-tested generator based on a first inertia time constant and a first preset threshold, amplifying a synthesized mechanical power integral of a power system stabilizer by a first preset coefficient, and recording a first waveform diagram to obtain a first target value based on a first pole value of the first waveform diagram; updating the first inertia time constant based on a preset adjustment step and the first target value to obtain a second inertia time constant, and then determining a second waveform diagram and a second target value; correcting the second inertia time constant based on a preset adjustment step, the first target value and the second target value to obtain a corrected inertia time constant, and then determining a third waveform diagram and a third target value; and obtaining a target inertia time constant when an absolute value of the third target value is less than or equal to a second preset threshold. The method solves the problem of a large error of a unit inertia time constant in the prior art.

The application belongs to the field of polarization measurement, and particularly relates to a space solar spectrum magnetic field telescope based on multi-wave plate polarization modulation, which comprises a telescopic system, a relay system and a spectral imaging system; the telescopic system comprises a first 1 / 2 wave plate, a 1 / 4 wave plate and a second 1 / 2 wave plate; when neither the first 1 / 2 wave plate nor the second 1 / 2 wave plate fails, the second wave plate is kept static, the first wave plate and the third wave plate are rotated in the same direction according to a preset different-speed non-synchronous motion time sequence, and measurement of full Stokes components of solar polarization spectrum is realized; when any one of the first 1 / 2 wave plate or the second 1 / 2 wave plate fails, the 1 / 4 wave plate is started, and is rotated in the same direction with the other normal 1 / 2 wave plate according to a re-planned different-speed non-synchronous motion time sequence, so as to maintain the measurement of full Stokes components of solar polarization spectrum. The application can realize full Stokes measurement, and fills the gap of the space solar vector magnetic field detection capability in China.

A cause of prolongation of a blood clotting time for a test sample is estimated by acquiring a clot waveform showing a change in light amount over time according to a coagulation reaction of a reaction liquid. A first waveform is acquired by performing before-after differentiation processing on the clot waveform. First and second fitted waveforms are acquired by performing fitting processing on the clot waveform and the first waveform. A third waveform is acquired by performing before-after differentiation processing on the second fitted waveform. First to third normalized waveforms are acquired by normalizing the first and second fitted waveforms and the third waveform, respectively, on a light amount axis and a time axis. A feature from each of the first to third normalized waveforms is extracted; and the cause of prolongation of a blood clotting time is estimated based on a known feature and the extracted feature.

Structure (10) for a polarization rotator, wherein the structure (10) comprises: a substrate (16); a first waveguide core (12) over the substrate (16), wherein the first waveguide core (12) comprises a section (18, 20); a second waveguide core (40) above the substrate (16), wherein the second waveguide core (40) is positioned near the section (18, 20) of the first waveguide core (12), and the second waveguide core (40) is vertically displaced from the first waveguide core (12), and a third waveguide core (60) which is vertically displaced from the first waveguide core (12), wherein the third waveguide core (60) comprises a section (70) which is positioned in an overlapping relationship with the section (18, 20) of the first waveguide core (12), wherein the second waveguide core (40) consists of a first material having a refractive index that is reversibly variable in response to a stimulus, wherein the first waveguide core (12) consists of a second material different from the first material, and the third waveguide core (60) consists of a third material different from both the first and second material, and the section (70) of the third waveguide core (60) and the section (18, 20) of the first waveguide core (12) define a polarization region configured to rotate a polarization mode of light, and the second waveguide core (40) is configured to absorb the light when the stimulus is applied to the first material.

The invention discloses a flashlight, which relates to the technical field of lighting equipment and comprises a connecting cylinder and a telescopic sleeve. A lamp holder with a lamp bead piece is arranged at the end of the connecting cylinder, and a first wave-shaped groove and a third wave-shaped groove are formed in the peripheries of the two axial ends of the lamp holder correspondingly. The telescopic sleeve is rotatably connected to the connecting cylinder in a sleeving mode, a waveform mother cylinder is arranged at one end in the telescopic sleeve, a fourth waveform groove is formed in the other end of the telescopic sleeve, the telescopic sleeve is connected with a lens, and a second waveform groove is formed in the periphery, opposite to the first waveform groove, of the waveform mother cylinder; wherein the first wave-shaped groove and the second wave-shaped groove are in sliding butt joint in the circumferential direction, the third wave-shaped groove and the fourth wave-shaped groove are in sliding butt joint in the circumferential direction, the distance between the second wave-shaped groove and the fourth wave-shaped groove in the axial direction is not changed, and the butt joint positions of the first wave-shaped groove and the second wave-shaped groove and the butt joint positions of the third wave-shaped groove and the fourth wave-shaped groove change alternately. According to the technical scheme, continuous and flexible zooming of the flashlight is achieved, and the convenience of zooming operation is improved.

An optical module (200), comprising a wavelength division assembly (5172b), a first reflective sheet (5713), a first reflector (5176a) and a second reflector (5174a), wherein the wavelength division assembly (5172b) comprises a first substrate (51721), a first wave plate (51722), a second wave plate (51723b), a third wave plate (51724b), a fourth wave plate (51725b), a fifth wave plate (51726b), a sixth wave plate (51727b), a seventh wave plate (51728b) and an eighth wave plate (51729b), the fifth wave plate (51726b) being located on a transmission optical path of the first wave plate (51722), the second wave plate (51723b) being located on a reflection optical path of the fifth wave plate (51726b), the sixth wave plate (51727b) being located on a reflection optical path of the second wave plate (51723b), the third wave plate (51724b) being located on a reflection optical path of the sixth wave plate (51727b), the seventh wave plate (51728b) being located on a reflection optical path of the third wave plate (51724b), the fourth wave plate (51725b) being located on a reflection optical path of the seventh wave plate (51728b), and the eighth wave plate (51729b) being located on a reflection optical path of the fourth wave plate (51725b); the first reflective sheet (5713) is located between the second wave plate (51723b) and a second light-receiving assembly (520); the first reflector (5176a) is located between the seventh wave plate (51728b) and a first light-receiving assembly (530); the second reflector (5174a) is located between the eighth wave plate (51729b) and a third light-receiving assembly (540); and a received optical signal is reflected and transmitted between the plurality of wave plates, so as to achieve wavelength division.

Examples of fault location in a power transmission line connecting a first and a second terminal is described. In an example, arrival times of a first peak, a second peak, and a third peak of a travelling wave detected from measurements carried out at the first and second terminals is detected. A rise time associated with the first peak of the travelling wave is calculated. One of a first half and a second half of the power transmission line is identified, as having a fault, based on a comparison of the rise time. One of a first segment, a second segment, a third segment, and a fourth segment of the power transmission line is identified as having the fault. Length of the power transmission line is estimated. The fault location is estimated based on identification of one of the first, second, third, and fourth segments as having the fault.

The application provides a gas radial bearing and motor, the gas radial bearing comprising: a bearing seat, a top foil, a first layer of wave foil and a second layer of wave foil; the first layer of wave foil comprises a first wave foil located at an axial first position, the second layer of wave foil comprises a second wave foil located at an axial second position and a third wave foil located at an axial third position; the first wave foil comprises first wave foil supporting ends and first wave foil flat sections alternately arranged along a circumferential direction, the second wave foil also comprises second wave foil supporting ends and second wave foil flat sections alternately arranged along the circumferential direction, and the third wave foil also comprises third wave foil supporting ends and third wave foil flat sections alternately arranged along the circumferential direction; and the arch height of the first wave foil supporting end is less than the arch height of the second wave foil supporting end, and the arch height of the first wave foil supporting end is less than the arch height of the third wave foil supporting end. According to the application, the gas film thickness at the middle position is effectively increased, the bearing carrying stiffness is improved, the bearing end leakage is reduced, and the carrying capacity is improved.

A liquid ejection head includes a nozzle, a pressure chamber that is capable of storing liquid and communicates with the nozzle, a volume of the pressure chamber being varied to eject the liquid from the nozzle, an actuator configured to vary the volume of the pressure chamber in response to a drive signal, and a drive circuit configured to generate the drive signal. The pressure chamber has one of states including: a steady state in which the volume is unchanged, an expanded state in which the volume is expanded, and a contracted state in which the volume is contracted. The drive signal includes first through fourth waveforms. A duration of the fourth waveform is shorter than a duration of the third waveform, and is at least 1 μs or 0.5 times a half cycle of a main acoustic resonance frequency of the liquid in the pressure chamber.