46results about How to "Structure does not need to change" patented technology

The invention belongs to the technical field of electronic circuits, and provides a multi-power supply switching circuit which is characterized by comprising the following steps: (1) a power supply VH obtained by connecting a power supply VDD and a backup power supply VBAK in parallel through a diode supplies power to a band-gap voltage reference, a hysteresis comparator and a gating control circuit; (2) designing a band-gap voltage reference to obtain a voltage VREF, and providing a stable reference voltage for a post-stage comparator and an LDO (Low Dropout Regulator) circuit; (3) designing a hysteresis comparator, adjusting a divider resistor according to a switching threshold to perform voltage division on VDD, and comparing with VREF to obtain a gating control signal; (4) designing a gating control circuit, utilizing a control signal sw obtained by a hysteresis comparator to obtain a gating control signal sw1 after level shift boosting, and gating a power supply to obtain a power supply voltage VS; and (5) an LDO circuit is designed according to the power supply voltage of a post-stage circuit, and the gated power supply VS supplies power to the LDO to obtain stable output voltage VCORE.

The invention discloses a driving method for plasma which comprises: displaying according to subfield, dividing each field wave shape into a plurality of subfield wave shape and a erasing period wave shape ; each subfield wave shape includes resetting period, addressing period and maintaining period, employing different Y electrode resetting period driving wave shape for displaying bright images or dark images; erasing period Y electrode of each field wave shape is descending oblique wave voltage and all subfields have the same addressing period driving wave shape; each subfield maintaining period has the same wave shape, and has different amount of maintaining pulse according to each subfield weight.

The invention discloses a microstructure optical fiber broadband polarization filter with tunable filtering direction. The microstructure optical fiber includes a core area, an inner cladding area and an outer cladding air hole area. The substrate is composed of a large hole in the center of the fiber core filled with nematic liquid crystals, and the inner cladding area is composed of four enlarged holes, showing a C 4v Symmetrically distributed around the large hole in the center of the fiber core to form the first layer of air holes arranged in a square array. In the inner cladding area, metal coating is applied to any enlarged hole or two enlarged holes symmetrical along the diagonal to form The coating hole, the outer cladding air hole area includes three layers of square array of air holes, and the first layer of square array of air holes to form a completely symmetrical microstructure end structure in the horizontal and vertical directions; the nematic phase filled in the microstructured optical fiber The liquid crystal applies an external electric field, and the direction of the long axis of the nematic liquid crystal molecules is changed by adjusting the voltage of the external electric field, so as to realize the tuning of the filtering direction.

The invention discloses a grating sensing device based on a Brillouin filter. The grating sensing device comprises a broadband light source, a first circulator, a sensing optical fiber grating, the Brillouin filter, a synchronization signal module, a photoelectric detector and a signal acquisition and processing module. The Brillouin filter comprises an optical fiber section generating the stimulated Brillouin scattering SBS effect, a second circulator and a narrow linewidth tunable light source. Broad spectrum continuous signal light outputted by the broadband light source is outputted to the sensing optical fiber grating through the first circulator, and the reflected light meeting the Bragg's condition of reflection is generated and outputted to the optical fiber section through the first circulator. The narrow linewidth tunable light source outputs frequency sweep light to be outputted to the optical fiber section through the second circulator. The reflected light and the frequency sweep light are reversely transmitted in the optical fiber section to generate the SBS effect, and the amplified reflected light is outputted to demodulate the central reflection wavelength of the sensing optical fiber grating. The invention also discloses a method of the grating sensing device based on the Brillouin filter. The device is simple in structure and high in measurement precision.

The invention provides a detachable highway steel bridge carrying and erecting vehicle of average height installation. The vehicle comprises a middle lifting roller assembly, a vehicle body and a lifting plate assembly; the middle lifting roller assembly is detachable and the position is adjustable, two forks crossing the vehicle body is horizontally installed in the middle of the vehicle body in the vertical direction; the lifting plate assembly mounted behind the vehicle body is detachable and the position is adjustable. Compared with the prior art, most of the components are detachable and it is not necessary to change any structures of the existing forklift; modular design is adopted, most of the components in assemblies is in common use and easy to maintain and manage; the structure of the erecting vehicle is adjustable, which is capable of completing ultralow posture work; a guider roller is replaced by a detachable retainer ring and therefore the work flexibility is increased. And the retainer ring can adjust position according to the need and is suitable for beams with various specifications and sizes; after the vehicle body is additionally provided with a front lifting roller assembly, the labor intensity is reduced and posture of devices including a truss and the like can be guaranteed.

The invention discloses an oblique incident laser particle analyzer for realizing the measurement of a full-range (0-180 degrees) scattering angle. The oblique incident laser particle analyzer comprises a laser, a lens group, a sample cell and viewfinders. The oblique incident laser particle analyzer is characterized in that the lens group consists of a front lens and a rear lens which share the same optical axis; the front lens and the rear lens are respectively arranged at the front side and the rear side of the sample cell, so that the center of the sample cell is positioned on the optical axis; the laser is obliquely arranged at the rear side of the rear lens; emitted laser beams pass through the edge part of the rear lens to form parallel light which obliquely enters the center of the sample cell; and the viewfinders comprise a front viewfinder positioned at the front part of the front lens and a rear viewfinder positioned at the rear lens and can be used for receiving a scattering light signal from particles in the sample cell. According to the oblique incident laser particle analyzer, the problems of low sensitivity and resolution caused by narrow range of the scattering angle received by the lenses are solved; and the oblique incident laser particle analyzer has the characteristics of high sensitivity and resolution, high test accuracy, wide range of measuring the particle size distribution, and the like.