17results about How to "Simplify design difficulty" patented technology

The utility model relates to the technical field of bridges, and provides an anti-seismic stop block of a bridge, which comprises a connecting part and a supporting part which are connected with each other, the connecting part is provided with a through hole, an anchoring steel bar can penetrate through the through hole, and the anchoring steel bar is arranged in a cover beam, a support padstone or a pier. According to the device, the anti-seismic check block is prevented from protruding out of the top face of the cover beam, the cover beam does not need to reserve an installation space on the top face, the outer end face of the cover beam can be flush with the end face of the support padstone, the use amount of cover beam materials is saved, the main beam and the bridge deck which are large in self weight exist above the installation position of the connecting part, the connecting part can be pressed more tightly, and the anti-seismic effect is better. Therefore, the foundation stress of the anti-seismic check block is more stable, the transverse displacement of the main beam is effectively resisted by virtue of the self weight of the upper structure, the impact force of the main beam does not need to be resisted independently by virtue of the self weight of the anti-seismic check block, the design size of the anti-seismic check block is effectively reduced, the design difficulty and the construction difficulty are further simplified, and the construction period is shortened.

The invention provides a blood brain barrier bionic micro-fluidic chip device, and belongs to the technical field of bionic chips. The system comprises a concentration gradient generation module and a blood brain barrier bionic module. A concentration gradient generation module chip of the concentration gradient generation module is of a tree-shaped structure, and the concentration gradient of the medicine is generated through a multiple dilution method; according to the module, the uniform concentration gradient is formed at the outlet by accurately controlling the drug concentration, and the intervention effect of the drug on the disease can be researched according to the dose-effect relationship in one experiment. The blood-brain barrier bionic module comprises an upper-layer chip and a lower-layer chip which are separated by a porous film, and the upper-layer chip simulates a blood vessel end of a blood-brain barrier; and the lower-layer chip simulates a brain end. The design partially reproduces the cell structure and function of the blood-brain barrier, and allows researchers to establish a more effective blood-brain barrier model in vitro.

The invention provides an integrated drive control power semiconductor module and a control device. The power semiconductor module comprises a module shell and a module substrate, the power unit comprises a first substrate arranged on the module substrate, and a power device and a terminal which are arranged on the first substrate; the control unit comprises a second substrate, and a driving circuit and a control interface circuit which are arranged on the second substrate; the control interface circuit is used for generating a control signal for controlling the driving circuit based on the control instruction and the sampling signal; the driving circuit performs modulation processing based on the control signal to generate a driving signal to drive the power unit, and the power unit controls operation of the load based on the driving signal; the power unit and the control unit are packaged in an internal space formed by the module shell and the module substrate, the power unit, the control unit and the terminal are electrically connected through bonding wires, and the terminal extends to the outside of the module shell from the first substrate. The design of a power product is simplified, and the integration level and the power density are improved.

The invention relates to the field of electrophysiological ablation, in particular to a catheter capable of performing local ablation, which comprises a spherical head end and a catheter body, the spherical head end is connected to the far end of the catheter body, and the spherical head end comprises a plurality of supporting arms, a plurality of outer side electrodes and a plurality of inner side electrodes; a hollow part is arranged between the supporting arms, and the supporting arms are elastic; the outer side electrode is arranged on the supporting arm, the outer side electrode is a flexible planar electrode, and the shape of the flexible planar electrode is one or more of a circle, an oval and a polygon; the inner side electrodes are arranged on the supporting arms, correspond to the outer side electrodes one by one and are located on the back faces of the outer side electrodes, and the surface area of the inner side electrodes is equal to that of the outer side electrodes. Multi-pole precise mapping, multi-pole high-efficiency ablation and single-point local fine ablation are achieved on the same catheter at the same time, and meanwhile attachment detection of any single outer side electrode can be achieved under the condition of a plurality of ablation electrodes.

The application provides a kind of deep learning optical imaging system design method based on complex function neural network, comprising the following steps: step one, object distance, system focal length, F number as input, according to the ideal optical system imaging relationship, determine image distance, imaging scale ratio;Step two, according to the imaging scale ratio and the object image of ideal optical system, the image of ideal optical system is calculated;Step three, construct complex function generator network model, step four, construct discriminator network model, step five, after the establishment, training of the above-mentioned complex function neural network deep learning model, step six, use phase.The deep learning optical imaging system design method based on complex function neural network provided by the application solves the correlation between the advantages and disadvantages of the design result and the experience value of the designer, without the designer providing initial structure parameters;Greatly improve the computing ability and optimization speed.

The application belongs to the technical field of power management integrated circuits, and particularly relates to a low-voltage power rail circuit applied to a high-side floating basin of a motor driving circuit. The circuit realizes a stable power rail in the floating basin through a super source follower architecture and a bias of MOS tube threshold tracking. The circuit has the advantages that it can track the MOS tube threshold voltage to realize lower static power consumption, can realize fast transient response under different load conditions, has good anti-dv / dt noise capability, and can realize small overshoot voltage during load switching under small decoupling capacitance, thereby reducing the circuit area.

The invention discloses an ultra-high-cycle fatigue test device capable of realizing a thermal gradient environment. The ultra-high-cycle fatigue test device comprises an ultrasonic fatigue test device, a tensile test device, a high-temperature environment device, a cooling system, a temperature test device and a microscopic monitoring device, the ultrasonic fatigue test devices are arranged on the upper and lower sides of the high-temperature environment device; the tensile test device is located above the ultrasonic fatigue test device, and the cooling system is connected with the interior of the sample. According to the invention, the comprehensive service behavior test under the conditions of high temperature environment, thermal gradient and multi-stress ratio ultra-high cycle fatigue can be carried out at the same time, multiple functions are integrated, the test under complex conditions is carried out on the same experimental platform, and the performance evaluation of an aero-engine material under more real conditions is realized; the influence of the thermal gradient condition on the service strength and the failure mechanism is explored, and cooperative test research on the service behavior of the engine blade material under the influence of multiple factors such as super-long life fatigue under the high-temperature thermal gradient is realized.

The invention relates to a glue dispenser mounting back plate structure, in particular to an automatic rotating back plate structure which comprises a plurality of mounting plate groups, a rotary pipe, a mounting support and a mounting seat, the rotary pipe is rotatably mounted on the mounting plate groups and driven by a first worm assembly mounted on the mounting plate groups to rotate, and the mounting support is mounted on the mounting seat. The multiple sets of first worm assemblies are sequentially and coaxially connected in a transmission mode, the installation support is fixedly installed at one end of the rotary pipe, a rotary shaft is rotatably installed in the installation support and is in transmission connection with a movable pipe installed in the rotary pipe in a sliding mode, and the movable pipe is driven by the second worm assemblies and the gear assemblies to linearly move. According to the glue dispenser, after installation is completed, the multiple sets of rotary pipes and the installation bases can be correspondingly driven to synchronously deflect through the first worm assemblies and the second worm assemblies, and the driving structure of the multiple sets of installation bases is greatly simplified.

The invention discloses an ultra-wideband six-channel front-end receiving device and a design method thereof. The device comprises a signal receiving unit which is used for receiving six paths of 0.35-18GHz radar signals; the local oscillation unit is used for providing multiple paths of local oscillation signals for the signal receiving unit; the self-checking source is used for providing a calibration signal required by calibration of the receiving channel; the power detection unit is used for realizing online power detection of the receiving channel; and the power supply control unit is used for power supply management, control signal distribution and state information feedback. According to the invention, the integrated miniaturization of the six-channel front-end receiving device within the frequency range of 0.35-18GHz is realized; through amplitude-phase calibration, the hardware circuit design of the front-end receiving device is simplified, a good amplitude-phase consistency index and a large instantaneous detection bandwidth are achieved, the amplitude consistency reaches + / -1dB, the phase consistency reaches + / -5 degrees, and the maximum instantaneous detection bandwidth reaches 4GHz.

The present application relates to the technical field of vehicle control, in particular to a kind of electric automobile drive anti-skid control method and system.If TCS is in the activated state, then output torque F t =F a , otherwise, the validity of brake pedal signal is judged;If valid, then output torque F t =F a , if invalid, then the slip rate λ is judged;If the slip rate λ is in the optimal slip rate interval, then drive anti-skid exit time T1 cumulative count is executed, drive anti-skid enable time T2 cumulative count is zero, until T1 is greater than drive anti-skid exit time T qu , then output torque F t =F a ;Otherwise, then drive anti-skid exit time T1 cumulative count is zero, drive anti-skid enable time T2 cumulative count is executed, until T2 is greater than drive anti-skid enable time T en , then judge whether current demand torque F a is greater than output torque limit F Limit ;If yes, then output torque F t =F a *C;If not, then output torque F t =F a .The present application saves the space in the car, simplifies the difficulty of hardware architecture design, and is conducive to the arrangement of hardware equipment.

The invention relates to the technical field of ultrasonic water meters, in particular to an online meter calibration method based on an instantaneous flow method, which abandons the traditional method of depending on a high-precision electronic scale as a standard device, and realizes full-automatic calibration of an ultrasonic water meter by adopting the instantaneous flow method. Meanwhile, the problems that in the prior art, an ultrasonic water meter generally depends on a start-stop method or a reversing method and is difficult to be compatible with an instantaneous flow method, and accurate calibration can be achieved only through customized transformation are solved, and a calibration platform specially matched with the instantaneous flow method does not need to be customized again. The instantaneous flow method is successfully integrated on a traditional meter calibration table, the technical limitation of existing equipment is overcome, full-process automation from measurement to judgment is achieved, and meter calibration efficiency is remarkably improved. Meanwhile, the core requirement of the method lies in the stability of flow output, and the harsh requirement for the control time sequence and data reading synchronism of the meter calibration table is greatly lowered. Meanwhile, the invention further provides application of the method in the actual meter calibration process and an ultrasonic water meter calibration table.

The present invention discloses a low-profile, broadband, high-gain, and high-aperture efficiency metasurface antenna, which belongs to the field of antenna technology. It includes, from top to bottom, a metasurface structure layer, a first dielectric loading layer, a radiation patch layer, a second dielectric loading layer, a drive patch layer, and a feed layer. The metasurface structure is composed of metasurface units arranged at a specific spacing, and the overall structure of the antenna is processed by a multi-layer printed circuit board process, and finally output by a labeled SSMP RF connector. The antenna adopts a metasurface loading and microstrip line back-feed structure, so that the antenna obtains good directivity and high gain. At the same time, by using dielectric loading instead of the traditional air loading layer, the design and processing difficulty of the metasurface antenna is greatly simplified. The present invention greatly reduces the difficulty of assembling and welding the antenna unit in the later stage, and also increases the reliability of the antenna. The present invention has the advantages of simple structure, high gain, low profile, and low difficulty in processing, assembling, and welding.

This invention provides a fully digital wireless time and frequency synchronization system and method, applicable to the fields of positioning, navigation, and timing technology. The system includes: a signal transceiver module for bidirectional time transmission with a master node via a wireless channel and recording transmission and reception timestamps; a time measurement module for calculating time and frequency deviations based on the timestamps and generating a digital frequency control word; a microelectromechanical system (MEMS) oscillator module for receiving the frequency control word via a digital interface and adjusting the output frequency in real time; and a synchronizer module for generating a second pulse signal based on the adjusted frequency. The adjusted frequency is fed back to the signal transceiver module as a local clock driver, forming a closed-loop frequency control. This invention deeply integrates high-precision time measurement with a MEMS resonator, achieving fully digital closed-loop control. While maintaining advantages such as small size, low power consumption, and vibration resistance, it significantly improves the transient response speed and long-term stability of frequency synchronization and supports rapid customization of special frequency points.

The invention discloses a filtering antenna and a 5G communication device. The antenna comprises an upper dielectric plate, a lower dielectric plate, a driving patch and a plurality of parasitic patches, the upper dielectric plate and the lower dielectric plate are separated through an air gap, the driving patch and the parasitic patches are arranged on the upper dielectric plate, and the parasitic patches are arranged around the driving patch; a feeder line and a plurality of short-circuit branches are arranged on the side surface, back to the upper dielectric plate, of the lower dielectric plate, and a coupling gap is etched in the other side surface; the driving patch receives an electric field radiated from the coupling slot, generates coupling common radiation on the parasitic patch, and generates a radiation zero point on the upper edge of the passband; and the plurality of short-circuit branches are respectively positioned at the terminal and two sides of the feeder line, and generate absorption zero points at the lower edge of a passband, an out-of-band high-order mode position and a second harmonic position. According to the invention, excellent filtering response of the antenna is ensured, and the suppression degrees of 34.6 dBc and 31.3 dBc are achieved at a high-order mode position and a second harmonic position.

The invention provides a complementary coupling system applied to dynamic wireless power transmission, which comprises a segmented direct current bus for supplying direct current obtained after a power frequency power grid is rectified to an inversion-control module of a corresponding road section, and the inversion-control module inverts the direct current into high-frequency alternating current; the inverted high-frequency alternating current completes resonance with the primary multi-pole transmitting coil or the primary single-pole transmitting coil through the primary compensation network, transmits energy to the integrated receiving coil based on a near-field resonance coupling principle, and completes resonance with the integrated receiving coil through the secondary compensation network; the high-frequency alternating current is converted into stable direct current through the rectifying and filtering module and is output to a vehicle battery; wherein the multi-pole type transmitting coil and the single-pole type transmitting coil which are located on the primary side are alternately laid, and the integrated receiving coil is formed by connecting and overlapping a multi-pole type receiving coil and a single-pole type receiving coil in series. According to the invention, the advantages of the single-pole coil and the multi-pole coil are utilized, so that stable and efficient dynamic wireless power transmission can be achieved.

The utility model relates to the technical field of thin plate concrete foundation structures, in particular to a special reinforcing mesh for preventing concrete cracking at a thin plate embedded line pipe, which comprises a template, a plurality of supporting points and protective layer control limbs distributed in a splayed shape are arranged in the middle of the upper portion of the template, and the supporting points and the protective layer control limbs are arranged on the template. Core restraint rings are arranged at the top ends of the multiple fulcrum and protective layer control limbs, anti-crack reinforcing ribs are welded to the left sides and the right sides of the outer walls of the multiple core restraint rings, and an anchoring hook is welded to the end, away from the core restraint rings, of each anti-crack reinforcing rib; a plurality of longitudinal ribs are welded to the outer walls of the multiple core restraint rings in the circumferential direction. According to the special reinforcing mesh for preventing concrete cracking at the position of the embedded wire pipe of the thin plate, by arranging the core restraint ring, the longitudinal ribs and the anti-cracking reinforcing ribs, the design difficulty of the concentrated position of the wire pipe is simplified, the bearing capacity of the thin plate is enhanced, floor cracking is reduced, the wire pipe is fixed through the core restraint ring and the distribution ribs, the wire pipe is protected against damage, and the process cost is saved.

This invention discloses a cascaded low-loss bent waveguide design method based on vector synthesis. The steps are as follows: S1, the bent waveguide is regarded as a curve, and four control vectors are defined to describe the curve: the curve start point, the curve end point, a fixed distance point in the tangent direction of the curve start point, and a fixed distance point in the tangent direction of the curve end point, and the parameter vector of the curve is constructed; S2, based on the connection requirements and curvature smoothing characteristics of the bent waveguide to be designed, boundary condition constraint equations are established, and the algebraic relationship between the four control vectors is solved; S3, the structural parameters of the bent waveguide are defined, and the four control vectors are transformed into expressions related to the design parameters to be determined, namely the structural parameters and length; S4, following the order of length first and then structural parameters, with the goal of obtaining the minimum transmission loss, the unknowns in the design parameters to be determined are determined sequentially; this method has the characteristics of achieving ultra-low transmission loss and ultra-small structural size, which greatly simplifies the design process and reduces the difficulty.