161results about How to "Avoid asymmetry" patented technology

A magnetic resonance antenna has longitudinal antenna rods in a birdcage structure, and antenna ferrules connecting the longitudinal antenna rods at their ends in terms of radio-frequency. The magnetic resonance antenna has a number of radio-frequency switching elements that interrupt, in terms of radio-frequency, at least one part of the longitudinal antenna rod to detune the eigen-resonance frequency of the antenna with respect to an operating magnetic resonance frequency. For this purpose, the magnetic resonance antenna is provided with two switching lines, directed to the radio-frequency switching elements from outside of the birdcage structure, the switching lines having a ring line connected thereto running annularly on or in the birdcage structure and transverse to the longitudinal antenna rods.

A resonant switching power converter having burst mode transitioning operates during low or zero load conditions with reduced audible noise and component stresses, while improving efficiency. Pulse bursts are generated with a beginning and / or ending pulse duration that differs from mid-burst pulse durations, in order to reduce an amplitude of transients otherwise generated at the beginning and / or end of the bursts. Alternatively, the spacing between the pulses at the beginning and / or end of the bursts may differ from the spacing between the pulses in the middle of the bursts to reduce the transient(s). A number of pulses at the beginning and / or end of the burst can also be set with gradually varying durations, to further reduce component stress and audible vibration in a transformer that couples the resonant tank to the output of the converter.

The invention relates to a method for realizing electronization of tax service from tax payers to tax collection and administration parts by comprehensively using electronic invoices and a system thereof. The system at least comprises an initial device, a seller device, a buyer device, an electronic service part device, a collection and administration part device and a bank interface device; by using the electronic invoices of all types of taxes, an electronic service part is established so as to establish a service platform with the function of sharing information for the collection and administration parts which comprise state taxation organizations, local taxation organizations and customs organizations, therefore, management loopholes caused by divergence of mutual services are avoided; real-time linkage of the services of collection and return of the tax as well as foreign exchange settlement and purchasing of foreign exchange is realized; the invention is convenient for the tax payers to carry out declaration and handling of paperless taxation services; and the collection and administration authorities can also realize in-time storage and verification of taxes.

The invention relates to a frame structure beam plate column node oblique loading device. The frame structure beam plate column node oblique loading device comprises a concrete reaction wall, a test bench bed, a door frame, a horizontal loading mechanism, an axial loading mechanism, a lateral limiting mechanism, a beam end force measuring mechanism and a horizontal displacement measuring mechanism, wherein the horizontal loading mechanism comprises an MTS actuator, a loading head, a connecting rod and a connecting plate; the axial loading mechanism comprises a pressing head, a jack, an axial force rod, a column boot, a pad plate, a supporting hinged shaft and a column supporting pedestal; the lateral limiting mechanism comprises a lateral adjustment assembly and groove steel; the beam end force measuring mechanism comprises a pressing plate, a pull rod, a spoke type pressure sensor, a connecting hinged shaft, a fastening screw rod, an upper connecting head, a lower connecting head and a fixed pedestal; the horizontal displacement measuring mechanism comprises a vertical bracket and a displacement meter. The frame structure beam plate column node oblique loading device is easy to mount and accurate in test data, can reflect the actual stress condition of the beam plate column node well, and can be applied to seismic resistance tests of the frame structure beam plate column node with various section forms and different angles under the oblique low-cycle reciprocating load action.

A fully integrated CMOS multi-element phased-array transmitter (transmitter) includes, in part, on-chip power amplifiers (PA), with integrated output matching. The transmitter is adapted to be configured as a two-dimensional 2-by-2 array or as a one dimensional 1-by-4 array. The transmitter uses a two step up-conversion architecture with an IF frequency of 4.8 GHz. Double-quadrature architecture for the up-conversion stages attenuates the signal at image frequencies. The phase selectors in each transmitter path have independent access to all the phases of the VCO. The double quadrature architecture results in two sets of phase selectors for each path, one for the in-phase (I) and one for the quadrature phase (Q) of the LO signal. The phase selection is done in two stages, with the first stage determining the desired VCO differential phase pair and the next stage selecting the appropriate polarity. An on-chip Balun is used for differential to single-ended conversion.

The invention provides a multi-bushing plate merging wiredrawing technology. Specifically, 2 or more bushing plates are employed, and each bushing plate is provided with a plurality of leaks. Molten glass flows through each leak of each bushing plate and is cooled, and then a plurality of glass fibers can be obtained through wiredrawing molding respectively. Pulled by a wiredrawing machine driven wire cylinder, the glass fibers respectively pass through multiple upper bunchers and are neatened and gathered into glass fiber bundles, which are then neatened and gathered by a gathering buncher into a complete glass fiber bundle that is then wound on the wire cylinder into a finished glass fiber bundle. A multi-bushing plate wiredrawing device is provided with 2 or more bushing plates, each of which is equipped with a plurality of leaks. An upper buncher is installed behind each bushing plate respectively, a gathering buncher is arranged behind each upper buncher, the wiredrawing machine is disposed behind the gathering buncher, the wire cylinder is positioned on the gathering buncher, and the wire cylinder and the wiredrawing machine are in driving rotary connection. With the technology and device provided in the invention, the manufacturing cost of a bushing plate for a glass fiber bundle with a great weight of per unit length can be reduced, the band forming property of the glass fiber bundle can be improved, and the effect can be obvious.

An optical absorption gas sensor comprising a body having an internal wall which defines a chamber, at least one aperture in the body through which a gas sample can enter the chamber, a light source, at least one reflector, a detector assembly which extends into the chamber and has a first side and an opposite second side, a detector which measures light which is incident at least a range of angles on at least a part of a first surface of the detector assembly on the first side of the detector assembly, wherein the light source is located within the chamber on the second side of the detector assembly, the whole being configured such that light from the light source passes through the gas sample and is reflected around the detector assembly, by the at least one reflector, onto the detector.

The invention relates to a method for controlling a vertical regulating system (10) of a vehicle (100). The method for controlling a vertical control system of a vehicle with at least two vertical control devices (20) that influence the driving stability of the vehicle, includes monitoring the functionality of a corresponding vertical regulating device (20) by a sensor device of a respective control unit of the at least two vertical control devices (20), detecting a fault condition of a first vertical control device (22) of the at least two vertical control devices (20), and adjusting the control parameters of at least a second vertical control device (24) of the at least two vertical control devices (20) for at least partially compensating of the fault condition of the first vertical control device (22).

The invention discloses a clock servo method for correcting an IEEE (Institute of Electrical and Electronic Engineers) 1588 protocol by utilizing an adaptive filter, which is used for solving the problem of poor synchronization precision of clock synchronization by utilizing a pure software mode in a wireless ad hoc network. According to the method, time delay and offset calculated by a system areprocessed by a self-adaptive filter, a filtering output result is fed back to the system, and a closed-loop clock servo method is formed by combining a PID controller. The self-adaptive filter continuously adjusts the filter coefficient, so that the unique target can be achieved along with the fluctuation of the wireless environment: the time delay is minimized, and meanwhile, the convergence speed of the system can be accelerated to a certain extent. Therefore, the problems of instability and overlong delay in the wireless ad hoc network are solved under the condition of not increasing additional hardware.