72results about How to "Achieve motivation" patented technology

The invention discloses a ferromagnet magnetostrictive effect-based method for testing the length of an anchor rod, which comprises the following steps that: a magnetostrictive waveguide sensor is arranged on the free end of an anchor rod to be tested; a static bias magnetic field is applied at the mounting position of the magnetostrictive waveguide sensor; an exciting pulse signal is applied to the magnetostrictive waveguide sensor to excite mechanical vibration on the free end of the anchor rod; the sizes of the exciting pulse signal, exciting frequency and the static bias magnetic field are set to excite waveguides mainly in a longitudinal mode in the anchor rod; a receiving unit converts an elastic wave signal in a member to be tested into an electrical signal by using an inverse magnetostrictive effect, and after signal amplification, filtration and rectification, signal averaging and A/D conversion treatment, the electrical signal enters a test signal processing unit to test the actual length of the anchor rod to be tested. The method can realize the excitation and detection of ultrasonic waves in the anchor rod. The test signal contains information on the length and defects of the anchor rod and the actual length of a measured anchor rod can be measured accurately through the processing and analysis of a waveguide reflected wave signal.

The invention discloses a torsional mode magnetostriction sensor array, and belongs to the field of ultrasonic non-destructive testing. According to the phenomenon that an SH wave vibration mode in a plate is similar to a torsional mode in a pipeline, an MPSA (modified planar solenoid array) coil suitable for pipeline configuration and array is provided, and the torsional mode magnetostriction sensor array is designed and researched to excite the torsional mode in a pipeline. Tests verify that a T (0, 1) mode can be excited on a pipeline by the researched torsional mode magnetostriction sensor array, and in the tests, the frequency response characteristic of the sensor array is tested. The sensor array is used for rapidly and effectively detecting the position of a defect in an alloy steel pipe, the positioning precision is relatively high, and a basis is established for implementing two-dimensional defect imaging in the pipeline by the sensor array combined with a phased array principle.

The pneumatic active multi-waveform shock wave generator includes elastic washer system, the primary piston rod, O-rings, small normal pressure air chamber, piston, high pressure air chamber, the secondary piston rod, low pressure air chamber, split sealing ring, piezoelectric ceramic executor, cylinder lid, shock platform, large cylinder and small cylinder. The present invention can excite relatively large product with semi-sinusoidal wave, later-peak sawtoothed wave and other overload waveforms, and has excellent waveform controllability and repeatability. The present invention is used in heavy load and great shock test, and has wide application range, simple structure and high reliability.

The invention provides a parallel chain mining consensus method and device and a storage medium. The method comprises the steps that first calculation result information is generated according to a plurality of transactions to be consented; packing the first calculation result information into a first mining transaction and storing the first mining transaction into a local database for query or data recovery; packing according to the first calculation result information to generate a first voting transaction and sending the first voting transaction to the corresponding main chain node, recording the first calculation result information on the main chain through the main chain consensus, verifying whether the first calculation result information which is not less than a first threshold number in the first calculation result information recorded by the main chain is the same or not, and generating a verification result; and synchronizing the verification result, and writing the verifiedfirst calculation result information into the parallel chain. According to the method, local query and other functions are provided for a parallel chain consensus mechanism through atomic local data backup, and parallel chain nodes are attracted to participate in parallel chain consensus through mining excitation.

The invention provides a surface exciting method applicable to calculation of direction diagrams of waveguides in different shapes. The method comprises the following steps of: 1, setting an exciting surface of a shape corresponding to the shape of the cross section of a waveguide according to the the shape of the cross section of a waveguide; 2, dividing the exciting surface into even two-dimensional meshes, wherein an equivalent electric dipole source and a magnetic dipole source are arranged in the center of each mesh; 3, obtaining electric current of all the equivalent electric dipole sources and magnetic current of all the magnetic dipole sources on the exciting surface according to an equivalence principle, wherein an electromagnetic filed on the exciting surface is a main mode in which electromagnetic wave spreads in the waveguide; 4, carrying out mesh generation on the surface of the waveguide by virtue of triangular binning so as to obtain radiation fields generated by all the equivalent electric dipole sources, wherein the radiation fields serve as exciting fields of the surface of the waveguide; establishing an electric filed integral equation according to boundary conditions of the surface of the waveguide and obtaining the induction current of the surface of the waveguide by solving the equation according to a moment method; and 5, calculating the scattering direction diagram of the waveguide according to the induction current. Waveguides in different structures and shapes can be excited by the method provided by the invention instead of different methods separately.

The invention discloses an acquirement method of tool nose point modal parameters. According to the fact that repeated acceleration and deceleration impact is exerted in rotation of principal shaft dry running of a numerically-controlled machine tool, the tool nose point modal parameters on a principal shaft are obtained. The method specifically comprises the steps that time and an accelerated speed value of single acceleration and deceleration impact exerted in rotation of principal shaft dry running are confirmed; partition time of adjacent acceleration and deceleration impact exerted in rotation of principal shaft dry running is confirmed, wherein the sequence of the partition time is a random sequence; rotation of principal shaft dry running is controlled according to the confirmed accelerated speed, the time of the single acceleration and deceleration impact and the partition time of the adjacent acceleration and deceleration impact, and therefore stimulation is produced; the tool nose point modal parameters can be acquired after response signals of a principal shaft tool nose point are collected, analyzed and processed in stimulation. According to the method, the modal parameters relative to speed in rotation of principal shaft dry running can be acquired, and the modal parameters of actual working conditions can be acquired more accurately.

The invention discloses a multistep method for synthesizing diameter controllable ultralong silver nanowires on a large scale. Firstly, an ethylene glycol solution containing polyvinylpyrrolidone and sodium chloride is fully heated, a solution with a strong reducing property is obtained, then, a silver nitrate ethylene glycol solution is added, and a large number of seed crystals are generated; hydrogen peroxide is used for screening a small number of seed crystals with a specific size out of the seed crystals; the temperature is raised immediately to increase the reaction rate, and the threshold value of sculpturing the seed crystal by nitric acid is broken through; and the temperature is reduced, a reaction is carried out for a long time, the reaction rate is reduced, the probability of generating isotropy seed crystals through self-seeding nucleation is reduced, meanwhile, small cores are promoted to be adsorbed in the radial directions of large cores or the nanowires, and the ultralong silver nanowires are obtained. The diameters of the silver nanowires prepared through the method are adjustable within the range of several nanometer or micrometer scales, and the length can reach 300 micrometers or above; compared with silver nanowires prepared through a traditional method, the ultralong silver nanowires prepared through the method are larger in diameter adjusting range and larger in length; and the nanowires prepared through the method are high in yield and good in controllability, and batch preparation and industrial application can be achieved.

The invention provides an optically controlled solid-state plasma reconfigurable antenna based on transparent medium and electrically conductive materials. Based on the technical scheme of the novel reconfigurable antenna provided in the invention, the frequency, the directional diagram and the polarization of the antenna are reconfigurable. The reconfigurable antenna comprises a photosensitive material layer, a photosensitive material unit, an insulated isolation structure, a transparent dielectric layer, a transparent electrically-conductive material layer and a laser. The photosensitive material layer comprises the photosensitive material unit and the insulated isolation structure. According to the technical scheme of the invention, the transparent medium and the electrically conductive materials are adopted as the medium and the materials of the antenna. Meanwhile, the laser is arranged at the bottom for excitation purpose, so that the photoelectric isolation effect can be well realized. The influence problem of the bias circuit of a traditional reconfigurable antenna on the antenna radiation can also be solved.

In order to solve the technical problems, waste plastic crushing equipment comprises a power transmission device, an extrusion mounting shell and an extrusion crushing device, the power transmission device provides power for operation of the whole equipment, the extrusion mounting shell is provided with other devices, the extrusion crushing device is used for extruding and crushing materials in the extrusion mounting shell and then controlling feeding and discharging of crushed materials after extrusion, the equipment is characterized in that the power transmission device is fixedly mounted on the extrusion mounting shell, and the extrusion crushing device is fixedly mounted in the extrusion mounting shell.

The invention relates to a gyro theodolite detection device which comprises a main control unit, a gyroscope host detection unit, a controller detection unit and a human-computer interaction unit, wherein the main control unit is respectively connected with the gyroscope host detection unit, the controller detection unit and the human-computer interaction unit; the main control unit is used for receiving an instruction from the human-computer interaction unit; the gyroscope host detection unit and the controller detection unit are controlled to detect, and the received signal is transmitted to a human-computer interaction module; the human-computer interaction unit is used for inputting an instruction and receiving, storing and displaying data transmitted by the main control unit; the gyroscope host detection unit is used for detecting the current and the rotating speed of a gyro motor and a photoelectric signal from a photoelectric sensor of a gyroscope and transmitting the detected signal to the main control unit; the controller detection unit is used for detecting the working states of a motor driver board and a control display board and transmitting the signal to the main control unit. The gyro theodolite detection device solves the problems of gyro theodolite detection means deficiency, difficulty in fault positioning and the like.

The invention relates to a rail-mounted heavy equipment intelligent conveying device. The rail-mounted heavy equipment intelligent conveying device comprises two parallel rails and a plurality of chain wheel drive transmission mechanism units, and the chain wheel drive transmission mechanism units are evenly distributed between the rails and are parallel to the rails; an auxiliary transition cartmechanism is arranged at the transition position of every two adjacent chain wheel drive transmission mechanism units; each chain wheel drive transmission mechanism unit comprises a chain wheel and achain, the chain is installed on the chain wheel, the chain wheel is connected with a motor drive assembly, and the chain is provided with an automatic leading-in and separating device for rail-mounted heavy equipment. According to the device, the auxiliary transition cart mechanism and the automatic leading-in and separating device are adopted, a column can be guided to automatically enter a latch hook base and can also be automatically separated from the latch hook base, the motion state of rail-mounted heavy equipment is kept, and full-automatic cut-in and separation are achieved.

The invention relates to a transmission mechanism for a semi-automatic powder adding machine. The transmission mechanism comprises a transmission mechanism base, a speed regulating motor, a main transmission assembly and four driven assemblies. A drive gear is arranged at one end of the speed regulating motor. The main transmission assembly comprises a main transmission shaft, main bearing blocks, a driven gear and drive bevel gears. The main transmission shaft is horizontally arranged on the transmission mechanism base through the main bearing blocks. The two drive bevel gears are arranged at the two ends of the main transmission shaft respectively. The driven gear is engaged with the drive gear on the speed regulating motor. The four driven assemblies are symmetrically arranged at the two ends of the main transmission assembly in pairs. The transmission mechanism is used for supplying power to a lifting mechanism of the powder adding machine, powder filling work can be carried out on four kinds of empty heating pipes of different specifications at the same time, and labor cost and work strength are greatly reduced; and production efficiency is improved, the product quality is improved, operation is simple, practicability is high, and safety and reliability are achieved.

The invention provides a direct-flow scavenging engine cylinder liner with variable scavenging phase, a direct-flow scavenging engine cylinder liner component with variable scavenging phase and a direct-flow scavenging engine with variable scavenging phase. The direct-flow scavenging engine cylinder liner with variable scavenging phase comprises: a cylinder liner upper portion, and a cylinder liner lower portion coaxial to the same and provided with a scavenging port, wherein the scavenging port moves along the axis of the cylinder liner upper portion along with the cylinder liner lower portion to change the scavenging phase, and the cylinder liner lower portion is connected with the cylinder liner upper portion in airtight manner during moving. The direct-flow scavenging engine cylinder liner with variable scavenging phase, the direct-flow scavenging engine cylinder liner component with variable scavenging phase and the direct-flow scavenging engine with variable scavenging phase havethe advantages the traditional direct-flow scavenging two-stroke engine cylinder liner is divided into upper and lower portions from the position close to the upper end of the scavenging port, toothstructures in top-bottom staggering are engaged with each other so that the whole scavenging port is moved in vertical direction to change the scavenging phase, proper adjustment can be made accordingto the actuality, and the engine gains satisfactory dynamic property, economy and emission performance.

The invention discloses a fixed wing type unmanned aerial vehicle with vertical takeoff and landing functions. The fixed wing type unmanned aerial vehicle comprises an unmanned aerial vehicle body, wherein fixed wings are arranged at both sides of the unmanned aerial vehicle body; a first driving motor and a first rotary wing are arranged on each fixed wing, each first rotary wing is arranged on the corresponding first driving motor, a first battery and a first driver control assembly are arranged in the unmanned aerial vehicle body, and the first battery is used for driving a first driver to act. The fixed wing type unmanned aerial vehicle has the advantages that in the takeoff phase, the fixed wing type unmanned aerial vehicle is vertical to the horizontal surface through a first bending mechanism and a second bending mechanism, and then vertically takes off and lands; after takeoff, the first bending mechanism and the second bending mechanism are reset, the whole unmanned aerial vehicle is in a straight line shape, and the advancing function is realized through the rotary wings on the two bending mechanisms; under the mutual action of the rotary wings on the fixed wings, the whole power and steering of the unmanned aerial vehicle can be controlled.

The invention discloses a shock wave exciting device for performing non-contact underwater excitation on an MEMS microstructure. The shock wave exciting device comprises a base plate, two electric sliding tables are symmetrically arranged on the base plate, a water tank unit and a pedestal are arranged between the two electric sliding tables, needle electrode units are symmetrically mounted on the electric sliding tables respectively through manual double-shaft displacement tables, and the needle electrode units are respectively suspended in a tank body of the water tank unit; a microstructure unit is mounted on the pedestal and is suspended in the tank body of the water tank unit; needle electrodes of the two needle electrode units are respectively electrically connected with two electrodes of a high-voltage capacitor, and a first air switch is arranged between the high-voltage capacitor and one needle electrode; and the two electrodes of the high-voltage capacitor are respectively electrically connected with the positive electrode and the negative electrode of a high-voltage power supply, and on/off of such connection is controlled by a second air switch. The shock wave exciting device can not only excite the MEMS microstructure under water, but also avoid interference of vibration response of a base structure on test results, thereby achieving non-contact excitation on the MEMS microstructure and having good excitation effect.

The invention discloses an antenna, which comprises a first antenna and a second antenna, the first antenna comprises a first radiation unit and a reflector, the reflector is located between the second antenna and the first radiation unit, the reflector comprises a connecting part and a tooth part, and the tooth part comprises a plurality of comb teeth which are arranged side by side and extend from the connecting part to the first radiation unit, gaps are arranged between the comb teeth, the tooth part comprises an outline facing the first radiation unit, each comb tooth comprises an end part facing the first radiation unit, the outline is formed by connecting all the end parts, and the outline comprises a concave part which is concave towards the connecting part. According to the antenna provided by the invention, the reflector which is composed of the plurality of comb teeth and is provided with the contour concave part is designed between the first radiation unit and the second antenna, so that the reflected path of the first radiation unit is increased, and the directional radiation performance of the first radiation unit is enhanced. The invention also provides an antenna module and wireless network equipment.

The invention discloses an integrated optical fiber type photoacoustic probe capable of lateral ultrasonic excitation and detection. The side wall of an optical fiber (1) in the probe is polished and ground, and a photoacoustic material (31) is deposited on the side wall to form a photoacoustic signal excitation unit (3) to excite a photoacoustic signal; a Fabry-Perot (F-P) interference cavity is manufactured through femtosecond laser etching, and an F-P cavity type photoacoustic signal detection unit (2) composed of a dielectric mirror (21), a polymer film (22) and a dielectric mirror (23) is formed and used for detecting photoacoustic signals; and a 45-degree inclined grating (5) is manufactured on the optical fiber core (4) and is used for separating excitation light from detection light. Due to the filtering effect of the oblique grating (5), the excitation light beam transmitted in the optical fiber (1) is transmitted to the photoacoustic signal excitation unit (3) near the optical fiber end (6) through the oblique grating (5), and the deposited photoacoustic material (31) excites an ultrasonic signal under the photoacoustic effect; and the detection light beam is reflected to the F-P interference cavity on the side surface of the optical fiber through the inclined grating so as to detect a photoacoustic signal.

The invention discloses a steam turbine steam snow sweeper comprising a shell. A liquid discharging cavity with an opening in the upper end is formed in the shell. A melting cavity is formed in the right end wall of the liquid discharging cavity; a heating cavity is formed in the lower end wall of the melting cavity; a rotating cavity is formed in the left end wall of the heating cavity; a middlecavity is formed in the left end wall of the rotating cavity; a transmission cavity is formed in the left end wall of the middle cavity; two moving cavities which are symmetrical front and back are formed in the front end wall and the rear end wall of the transmission cavity; a driven cavity is formed in the rear end wall of the melting cavity; the right end, rotationally connected with the left end wall of the transmission cavity, of the driving shaft is located in the rotating cavity; the right end of the driving shaft is fixedly connected with a steam turbine blade; and a conveying plate isarranged in the melting cavity, the conveying belt rotates to drive accumulated snow to enter the melting cavity through the conveying plate, two fixed triangular blocks which are symmetrical front and back are arranged on the right side of the shell, a crushing blade is arranged between the two fixed triangular blocks, and the crushing blade rotates to conduct icebreaking.

The invention relates to a friction type seismic mitigation and absorption support vibration table reduced-scale test numerical calculation method. The method comprises the steps of (1) building an ideal friction type seismic mitigation and absorption support numerical model; 2) introducing gravity distortion and friction space variability for correction; 3) realizing numerical simulation of the vibration table test of the friction type seismic mitigation and absorption support with different scale ratios; 4) acquiring required actual seismic wave data; 5) calculating the response of the friction type seismic mitigation and absorption support under the action of each seismic wave by using a stepwise integration method; 6) realizing storage and drawing of model numerical calculation data; 7) analyzing the error influence of factors such as a friction space distribution form, a shear key, viscous damping, spring rigidity and spring initial force on the response of the reduced-scale model; and 8) explaining an error source based on an analysis result and proposing an effective solution. The invention provides the numerical calculation method for the reduced-scale test of the vibrationtable of the friction type seismic mitigation and absorption support, which can effectively solve the problem of inconsistency of the test and numerical simulation in the reduced-scale test of the vibration table.

The invention belongs to the field of vehicle explosion prevention, and particularly relates to a military vehicle seat buffer partition device and a buffer partition method. The device is arranged onthe back or a side surface of a seat framework, and comprises a fixing mechanism, a starting mechanism, and a buffer mechanism. The fixing mechanism comprises an upper fixing single head and a lowerfixing single head and is used for realizing connection between the buffer partition device and a seat; the starting mechanism is used for preventing false triggering of the buffer partition device and starting of a buffer energy absorption process; the buffer mechanism is used for buffering and isolating impact energy in an explosion process; and an inner pipe, an outer pipe and a plate-shaped serpentine spring arranged between the inner pipe and the outer pipe are included, the lower end of the serpentine spring is connected with the lower fixing single head, the lower fixing single head isconnected with the inner pipe, the upper fixing single head is connected with the outer pipe, and the upper end of the serpentine spring can move for a certain distance relative to the outer pipe. According to the seat buffer partition device, isolation of impact energy from the seat to a passenger is achieved through plastic deformation of the serpentine spring after the seat is impacted, and seat protection performance is effectively improved.

A method for automatically testing a system, the system comprising a plurality of subsystems connected via a reflective memory network to share a shared data set in the reflective memory network, the method comprising: automatically generating a test case for each subsystem; scheduling each subsystem to execute the corresponding test case, wherein each subsystem acquires a signal required for executing the test case from the shared data set; and putting, by each subsystem, an output signal or a state signal generated during or after the execution of the test case into the shared data set. The invention also discloses a system for automatic testing and a computer readable storage medium. According to the invention, automatic testing can be efficiently executed.