626results about How to "Avoid design" patented technology

Disclosed is a four-jawed combinational scissor-grasper surgical tool for use in laparoscopy. Cutting and grasping functionalities are respectively enabled via movement of a pair of such specially contoured jaw members sliding against or splaying apart from the other pair. Also disclosed are means for achieving selectable interlocking of jaw members and mechanical linkage for their actuation by human user.

A hearing instrument having an audio signal processing unit (16) for processing audio signals and a device (20) for vibrating at least one of the a user's eyeballs (22) in the audible frequency range according to the processed audio signals in order to stimulate the user's hearing sense.

The invention discloses a landslide MIMO radar monitoring system and monitoring method. Emitting and receiving antennas of the system are an MIMO radar antenna array. Emitting and receiving time-sharing selectors are connected with emitting and receiving antenna array elements respectively. A system synchronization control unit is connected to the emitting and receiving time-sharing selectors through an antenna time-sharing control unit. The monitoring method is characterized by carrying out MIMO antenna array time-sharing emission and step frequency continuous wave signal reception; carrying out inverse Fourier transform and distance compression on echo data, carrying out phase discontinuous correction on radar echo data, calculating time delay compensation factor and carrying out beam forming method azimuth focusing to obtain a high-resolution complex image; carrying out continuous monitoring to obtain a plurality of complex images and forming complex image pairs; and calculating differential interference phase after complex image pair registering and extracting deformation value and carrying out early warning. According to the landslide MIMO radar monitoring system and monitoring method, non-contact remote monitoring is achieved, monitoring range is wide, azimuth resolution ratio is high, real-time performance is high, data acquisition is quick, system device is light and portable, and layout is adjustable.

The present invention relates to a new-type RISC microcontroller frame, its core has two-level pipeline, and its adopts data memory and instruction memory separated Hafford-type structure, its access speed can be increased by once, its instruction set has 38 instructions, coding efficiency is high, it adopts pipeline structure, and it is easy to make instruction extension, said microcontroller frame can support low-power sleeping and wake-up mode, can support external interruption and support B port high-4-bit change interruption, and has strong interruption processing capacity, it can process 8-level interruption. Its data memory adopts single-port asynchronous low power consumption SRAM, storage depth is 256X8, can be extended to 2K, the program memory adopts embedded FLASH, storage depth is 4Kx16 bit, can be extended to 64 K bit, its addressing mode has direct addressing, indirect addressing and immediate number addressing mode, can be operated at DC-40 MHz.

The invention provides district searching method and device applied to a long-period evolution system. The district searching method comprises the following steps of: A, acquiring symbol timing information and CP mode information according to the iterative characteristic of CP data; B, carrying out the fast Fourier transform of NFFT data points in an OFDM symbol according to symbol timing information to obtain frequency domain data of the OFDM symbol; C, extracting a first candidate detection signal from the frequency domain data of the OFDM symbol according to a corresponding subcarrier position of main and secondary synchronous signals in a frequency domain; D, detecting the ID and the position of the main synchronous signal according to the first candidate detection signal and the known main synchronous signal sequence; E, acquiring a second candidate detection signal of the secondary synchronous signal according to the position and the CP mode information of the main synchronous signal, and detecting the ID of the secondary synchronous signal according to the second candidate detection signal and the known secondary synchronous signal sequence, thereby obtaining frame synchronization information. According to the invention, the complicated design of a narrowband low-pass filter can be avoided, and the operand is reduced.

The invention discloses a drawing method of a power network wind zone distribution map in a mountainous area. The method comprises the steps of data acquisition, data processing, data analysis, wind zone calculation model establishment, wind zone division, wind zone distribution map drawing and the like, the distribution map which can reflect recurrence periods of instantaneous maximum wind speed of the mountainous area can be obtained finally, the route design can be guided, the design which can be applied to adjusting measures to local conditions is conducted according to the instantaneous maximum wind speed wind zone level to drain wind deflection, the project manufacturing cost is reduced, the design which can be applied to selecting the safest and economical line route and prevent wind deflection accidents when building or transformation is conducted on a transmission line can be guided, and the problem that in the prior art, the wind zone distribution map drawing method can not meet the requirements of prevention and control work of wind deflection accidents in plateau mountain areas is solved; the technical problems that in the prior art, the wind zone distribution map lacks years of proofs of data collection, statistics of acquisition and modeling comparison and lacks theoretical support are solved.

The invention relates to a fuzzy retina fundus image enhancement method based on a generative adversarial network, and belongs to the technical field of image enhancement. The method comprises the following steps of 1, constructing a training set and a test set; 2, respectively preprocessing the fundus images in the training set and the test set constructed in the step 1; 3, constructing a generative adversarial network model for enhancement; and 4, enhancing the fuzzy retina fundus image of the test set by using the trained generator to obtain a final enhancement result. Compared with an existing fundus image enhancement method, the method has the advantages that the enhancement result is smooth and noiseless, the color restoration degree is high, and the problems of color offset, overhigh contrast degree, color distortion and noise amplification of a traditional method are effectively solved; a complex prior model is prevented from being designed, and the processing speed is higher; the details, such as blood vessel distribution of the retinal fundus image, etc., are well restored, and the generation result is real and reliable.

The invention relates to a scroll wrap profile of a liquid-injected scroll compressor. Outer profiles of a static scroll wrap and a dynamic scroll wrap are composed of a section of a variable diameter base circle involute, and the inner profiles of the static scroll wrap and the dynamic scroll wrap are composed by smoothly connecting a variable diameter base circle involute at a center part and normal equidistant curves of the variable diameter base circle involute of the outer ring. The scroll wrap refers to a scroll wrap with compression chamber variational meshing clearance and the wall thickness of the scroll wrap changing gradually. The meshing part close to a central air outlet of the compression chamber is provided with the meshing clearance which forms a pressure unloading channel to the air outlet with small clearance internal leakage, so that the problems of surge pressure in the compression chamber or liquid impacting which are produced by incompressible liquid with relatively large spraying volume. The meshing point of a suction cavity formed by the scroll wrap has no meshing clearance, so that the suction cavity is completely isolated from the compression chamber; at the same time, the wall thickness of the scroll wrap changes thinner gradually from the center to the outer ring, so that the central part of the scroll wrap has enough strength; and the wall thickness at the outer ring of the scroll wrap is relatively thin, so that area utilization rate of a scroll plate is effectively increased.

An assembly and method of sealing a junction of a pipe and a second structure are provided. The assembly includes a pipe liner having a tubular portion and a brim portion, and a mechanical anchor adapted to secure the brim portion of the pipe liner to the second structure. The assembly may further include a compression gasket for placement between the pipe liner and the pipe or second structure. The compression gasket may comprise a hydrophilic material, a hydrophobic material, or a compressible material. The methods of using the assembly include, but are not limited to, the use of a cured-in-place pipe liner.

The invention relates to a road gradient and car state parameter combined estimation method based on a parameter estimation error, and belongs to the field of vehicle engineering. The method comprises the steps of firstly establishing a car driving longitudinal kinetic model according to a car kinetics theory and the newton second law; measuring a car speed and a driving force of an engine by virtue of a car-borne sensor, and adopting the measured car speed and the driving force as input quantities of an estimation algorithm; filtering the car driving longitudinal kinetic model, and extracting a parameter estimation error; judging whether an excitation condition is satisfied: estimating an unknown parameter vector by utilizing a vector designing self-adaptive law containing the parameter estimation error if the excitation condition is satisfied; adding random interference to the driving force if the excitation condition is not satisfied, and returning for re-measurement; finally calculating estimated values of a road gradient, car weight, viscous friction coefficient, rolling friction coefficient and air resistance coefficient by virtue of basic mathematical manipulation. By adopting the method, the cost is reduced, the accumulation of measurement noise can be avoided, and the precision is improved; the calculation quantity is reduced.

A display system, a wireless power transmission apparatus, and a wireless power reception apparatus are provided. The display system includes a wireless power transmission apparatus, a wireless power reception apparatus, and a display apparatus configured to receive power from the wireless power reception apparatus, wherein the wireless power transmission apparatus includes a first coil and a second coil of a closed loop arranged above the first coil and configured to apply power to the first coil to generate a magnetic field in a direction toward the wireless power reception apparatus, and wherein, in response to the generated magnetic field being applied to the wireless power reception apparatus, the wireless power reception apparatus is configured to generate power using a coil of a multilayer structure into which a plurality of insulators is inserted and to transmit the generated power to the display apparatus.

The invention belongs to the technical field of wireless communication, and discloses a SIW ring slot antenna generating dual-mode OAM vortex electromagnetic waves. The cross section of the SIW ring slot antenna is a circular cross section, and the center of circle is O. The SIW ring slot antenna is composed of an upper metal surface, an intermediate dielectric substrate and a lower metal surface.The SIW ring slot antenna is provided with multiple metalized through holes, a ring radiation slot and three feed coaxial probes which are arranged from outside to inside in turn. Multiple metalizedthrough holes are uniformly arranged along the circumference. The ring radiation slot is etched on the upper metal surface. The three feed coaxial probes are three solid metal columns which are uniformly distributed in the internal side of the ring radiation slot along the circumferential direction. According to the SIW ring slot antenna, the design of the complex feed network can be avoided, thesize of the antenna can be reduced and the compactness and the degree of integration of the antenna can be enhanced.

The invention discloses an engineering optimization method of a Harris hawks algorithm based on multi-strategy enhancement. The engineering optimization method comprises the following steps: S1, constructing an optimization objective function of an actual engineering problem; S2, initializing parameters; S3, initializing the population position of the Harris hawks; calculating the fitness value ofeach Harris hawk in the initialized population according to the target function; S5, dynamically simulating the motion state of the prey and the execution state of the population so as to find the best execution strategy for each Harris hawk; s6, performing an exploration stage; s7, performing a development stage; s8, updating the position of the whole population through the steps S5 and S6, andenabling the updated new population to pass through an objective function and a constraint condition; s9, judging whether the maximum number of iterations is reached or not. The method has the following advantages and effects that a better solution can be found in an actual engineering optimization problem, and the precision of the solution of the constraint-containing engineering optimization problem is improved within limited time.

The invention provides an integrated mounting bracket for star sensors. The mounting bracket comprises a mounting bottom plate, an overall support platform, a plurality of support barrels and mounting flanges, wherein the mounting bottom plate is fixedly connected with a satellite platform; the overall support platform is fixedly connected with the mounting bottom plate; the plurality of support barrels are connected with the overall support platform respectively; the mounting flanges are arranged at the top ends of the support tubes and used for mounting the star sensors. According to the integrated mounting bracket for the star sensors, integrated mounting of three star sensors is realized according to a satellite attitude and orbit control subsystem scheme and the mounting requirements of the star sensors, and conditions of non-uniform bracket forms, complicated design and processing procedures and longer period occurring when the star sensors are separately mounted are avoided.

The invention relates to a comb-shaped plastic-reserving agent with a poly-sulphoacid structure particularly suitable for low-slump concrete, which is prepared with allyl polyether, sodium styrene sulfonate and sodium alkyl sulfonate as raw materials. The average molecular weight of the allyl polyether is 400-1500, the feeding amount of the allyl polyether accounts for 50-92 percent of the total molecular weight of the raw materials; and the molar ratio of the sodium styrene sulfonate and the sodium alkyl sulfonate is 1:0.2-1:5. The preparation method comprises the following steps: mixing the aqueous solution of each raw material monomer, heating to 65-98 DEG C, adding an initiator ammonium persulfate solution, completing the dropping within 2-4 hours, maintaining the temperature for 1 hour, cooling until the temperature is below 40 DEG C, adding caustic soda liquid for neutralization, and taking out the product, thereby obtaining the plastic-reserving agent, a comb-shaped polymer with the poly-sulphoacid structure. The structure of the polymer combines the advantages of two water reducing agents, naphthalene and polycarboxylic acid. Therefore, the polymer can realize excellent plastic-reserving property of the low-slump concrete with the slump being 7-9cm. simultaneously; the polymer has good physical and chemical compatibility with the two water reducing agents, naphthalene and polycarboxylic acid.

The invention discloses a method and a device for detecting a main synchronizing signal. The device comprises an FFT converter, a PSS extractor, a variable calculator and a maximum value detector, wherein the variable calculator is used for calculating probability variables representing three known PSS signals at each position of OFDM symbols according to K extraction sequences extracted from frequency domain signals corresponding to the K OFDM signs and the three known PSS signals; and the maximum value detector is used for determining the maximum value in the variables, determines a position corresponding to the maximum value as the position of the main synchronizing signal and determines a PSS signal identifier corresponding to the maximum value as the identifier of the main synchronizing signal. The invention also discloses the method for detecting the main synchronizing signal. The method can realize the detection of the main synchronizing signal in a frequency domain, avoids the complex design of a narrow-band low-pass filter, reduces the calculating amount and improves the frequency offset resistance capacity of a system and the success probability of the cell searching process.

The invention relates to the technical field of design of complementary metal oxide semiconductor transistor (CMOS) operational amplifiers and in particular discloses a two-stage fully-differential low-noise low-offset chopping operational amplifier, which comprises choppers S1, S2 and S3 and a two-stage folded cascade operational amplifier, wherein the chopper S1 modulates an input signal to a chopping frequency; the two-stage folded cascade operational amplifier amplifies the signal which is modulated by the chopper S1; the chopper S2 demodulates the signal to a base band; and the chopper S3 is used for dynamically switching a differential pair tube of a current source in the amplifier, so that the current mismatching of the current source and an offset voltage of the amplifier are further reduced. An output offset voltage and an equivalent input noise of the operational amplifier are effectively reduced, output amplitude is improved, a capacitor of an output end and operational amplification output impedance form a low-pass filter, an additional low-pass filter is not required to be designed, and the two-stage fully-differential low-noise low-offset chopping operational amplifier is quite applicable to a sensor detection circuit.

DETAILED DESCRIPTION embodiment of that present application disclose a system management method, The server includes a complex programmable logic device (CPLD), a first substrate management controller(BMC), a second BMC and a first computing node. The CPLD stores first master/backup state information indicating that the first BMC is a master BMC and the second BMC is a backup BMC. The first BMC and the second BMC manage a first computing node according to the first master/standby state information; The CPLD monitors the first BMC and the second BMC in real time; When the first BMC is abnormal, the CPLD updates the first master/standby state information to the second master/standby state information, the second master/standby state information is used to indicate that the first BMC is a backup BMC and the second BMC is a master BMC; The first BMC and the second BMC manage the first computing node according to the second master/standby state information. As that serv arranges the primary and the standby BMC, the management compute node of the standby BMC can be switched immediately when the primary BMC is abnormal, and the problem of a single point of failure of the BMC is solved.