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383results about How to "Fast recovery" patented technology

Miniature spectrograph with diffraction hole array structure and high resolution spectrum reconstruction method thereof

InactiveCN102564586AStrong anti-vibration interference abilityImprove performanceRadiation pyrometrySpectrum investigationOptical spectrometerSpectrograph
The invention provides a miniature spectrometer with a diffraction hole array structure and a high resolution spectrum reconstruction method thereof. The diffraction hole array structure miniature spectrometer basically comprises a miniature diffraction hole two-dimensional array, a base, a detecting array chip, a glare shield, and light transmitting holes, wherein the miniature diffraction hole two-dimensional array is constructed on a light blocking layer on the base surface and different in hole size. The base is made of transparent materials. The detecting array chip which corresponds to the base is arranged below the base, and one diffraction hole corresponds to one pixel member of the detecting array chip. The glare shield is arranged between the base and the detecting array chip and covers most area of each charge coupled device (CCD) pixel member. A series of light transmitting holes with the same hole size are arranged on the glare shield, each diffraction hole directly aligns to each light transmitting hole, and each CCD pixel member is below each diffraction hole. Due to the fact that diffraction phenomena occurs after incident light passes through the diffraction holesabove the base, the corresponding CCD pixel members below the diffraction holes can detect a certain diffraction light power. The hole size of each diffraction hole on the array is different, the diffraction light power detected by the corresponding CCD pixel members below is also different, and the spectral information of the incident light can be obtained only by inverting the data detected by each CCD pixel member.
Owner:NANJING FANGYUAN GLOBAL DISPLAY TECH

Ankle foot rehabilitation training device and balance training system

The invention provides an ankle foot rehabilitation training device and a balance training system. The lower end of a front supporting plate of the ankle foot rehabilitation training device is fixed to a base plate, a front foot sole pedal is hinged to the upper end of the front supporting plate, the front foot sole pedal is hinged to a rear foot sole pedal through a second pin shaft, first-second pin holes are formed in the bottom of the rear foot sole pedal, first-second pins are arranged in the first-second pin holes respectively, a first spherical hinge is respectively connected with a first pin and a third pin, a second spherical hinge is respectively connected with a second pin and a fourth pin, the third pin is connected with a first servo electric cylinder unit, the fourth pin is connected with a second servo electric cylinder unit, the first servo electric cylinder unit is connected with the base plate through a third spherical hinge, and the second servo electric cylinder unit is connected with the base plate through a fourth spherical hinge. The ankle foot rehabilitation training device can perform rehabilitation training on ankle joints and foot metatarsophalangeal joints of a patient respectively, the balance training system can change the position of the gravity center of the patient through the ankle foot rehabilitation training device, and therefore balance training is performed.
Owner:HARBIN ENG UNIV

Direct current monopole grounding fault ride-through method for multi-port flexible high-voltage direct current power transmission system

ActiveCN106655237AEliminate fault transient overvoltageFault restart speed is fastAc-dc conversionElectric power transfer ac networkOvervoltageHigh-voltage direct current
The invention provides a direct current monopole grounding fault ride-through method for a multi-port flexible high-voltage direct current power transmission system. The fault ride-through method is realized through coordination matching between an MMC (modular multilevel converter) based on low-resistance grounding and having negative electric level output capability and a mechanical direct current isolation switch; in a fault period, by regulating common-mode component of a reference voltage of each MMC bridge arm, fault transient state overvoltage can be eliminated under the premise of not sacrificing the controllability of the converter; meanwhile, by overlaying a fault pole bridge arm reference voltage with a first reference voltage signal and by controlling a fault pole bridge arm current to be zero, the mechanical direct current isolation switch can isolate direct current fault in a zero current condition, so that foundation is laid for the application of the mechanical direct current isolation switch in the multi-port flexible direct current power transmission system; and in the fault period, the MMC forms a loop through sound direct current bus-alternating current side low-impedance grounding pole-ground, so that transmission of half rated active power can be maintained.
Owner:HUAZHONG UNIV OF SCI & TECH

Durability tester for temperature controller

InactiveCN102122169ASmall thermal inertiaPrecise adjustment of heating temperatureTesting/monitoring control systemsAir pumpEngineering
The invention discloses a durability tester for a temperature controller, which comprises a power supply unit, a load unit, a detection control unit, an output unit, a heating unit and a cooling unit. The durability tester is characterized in that the heating unit comprises a copper block in which a heating pipe is arranged, the heating pipe is connected with the power supply unit, an upper surface of the copper block is provided with a thermoelectric couple for acquiring the temperature of the copper block in real time, the thermoelectric couple is connected with the detection control unit, and the upper surface of the copper block is further provided with an insulating heat-resistant pressure plate for fixing a temperature sensitive part of a temperature controller; the cooling unit is a cooling airflow sprayer arranged over the insulating heat-resistant pressure plate and connected with an external air pump of the tester; and the temperature controller is connected with an input end of the load unit through a lead. The durability tester has the advantages that the heating mode of the tester is small in thermal inertia, so that an adjustable range of the conduction and the disconnection of the temperature controller is large, the range of the heating temperature is large, the heating temperature and the cooling speed can be accurately controlled, accuracy of the test result can be improved, and the tester is simple in structure and low in cost.
Owner:宁波市产品质量监督检验研究院

Window film with automatically adjustable light transmittance

The invention relates to a window film with automatically adjustable light transmittance. The window film is prepared by comprising the steps of adding a photochromic dye, an ultraviolet absorbent agent, a pressure-sensitive adhesive and an organic solvent into a stirrer, unceasingly stirring to raise the temperature to be 50 DEG C, then keeping the temperature, unceasingly stirring for 0.5 hours so as to obtain a photochromic pressure-sensitive adhesive; coating the photochromic pressure-sensitive adhesive on a PET (polyethylene terephthalate) base film, drying the PET base film, and compositing the PET base film coated by the photochromic pressure-sensitive adhesive and the PET base film plated with a thermal-protective layer so as to obtain a composite film; coating an anti-scratch coating on one surface of the composite film, solidifying the anti-scratch coating through a UV-irradiation, coating the pressure-sensitive adhesive one the other surface of the composite film, and compositing the pressure-sensitive adhesive surface and a release film. The window film provided by the invention has the advantages that the regulation range of the visible light transmittance is large, the light transmittance is automatically reduced under the highlight environment and can automatically recover under the low light environment, and the colorless light is changed to be colored under the highlight environment, so that the whole beautiful effect is improved, the color kind and light transmittance increasing and decreasing range are adjusted according to the need, the manufacturing process is simple, and the production efficiency is high.
Owner:武汉羿阳科技有限公司

Room temperature nitrogen dioxide sensor preparation method based on reduced graphene-semiconductor

The present invention relates to a room temperature nitrogen dioxide sensor preparation method based on a reduced graphene-semiconductor. The preparation method comprises: adding graphite and NaNO3 into H2SO4, adding KMnO4, carrying out a reaction in a constant temperature water bath pot, adding deionized water, terminating the reaction, adding a H2O2 solution and hydrochloric acid to obtain an oxidized graphene suspension, dissolving inorganic salt powder in deionized water, adding the obtained solution to the oxidized graphene suspension, drying in a high pressure kettle to obtain corresponding powder, preparing an interdigital electrode and a wiring terminal on the front surface of a substrate by using a monocrystal silicon wafer Si as an insulating substrate, and preparing a reduced graphene-semiconductor composite coating just above the interdigital electrode. According to the present invention, the defects of sensor power consumption increasing, sensor service lifer shortening, detection safety risk increasing and the like in the prior art are overcome with the preparation method of the present invention; and the characteristics of large specific surface area, fast electron transport, good light absorption, fast response, fast recovery and lower working temperature of the reduced graphene are utilized.
Owner:YANGZHOU UNIV

Single event resistance latch structure based on state saving mechanism

The invention relates to a single event resistance latch structure based on a state saving mechanism, comprising a signal time delay circuit and a single event resistance latch circuit, wherein the delay time of the time delay circuit is more than the maximum pulse width generated by the transient disturbance of a single event; the single event resistance latch circuit simultaneously receives and compares an external input signal and an external input time delay signal of the external input signal, which is output by the signal time delay circuit; when the external input signal and the external input time delay signal are same, the single event resistance latch circuit outputs and latches a corresponding state signal according to the state of the external input signal; and when the external input signal and the external input time delay signal are different, the single event resistance latch circuit outputs a state signal latched by the single event resistance latch circuit on the previous moment. The single event resistance latch structure provided by the invention improves the restoring speed after a circuit is disturbed by the single event, can prevent SEU (Single Event Upset) effect and SET (Single Event Transient) effect from disturbing the circuit, has simple circuit structure, reduces occupation area, lowers power consumption and improves system reliability.
Owner:58TH RES INST OF CETC
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