31results about How to "Wide selection range" patented technology

A fitting method of a shaft of a golf club for selecting a shaft matching a golfer based on a swing of the golfer. The method includes the steps of obtaining measurement values from a sensor attached to a grip of a golf club; determining address, top, and impact of a swing from the measurement values; and selecting a shaft that matches a golfer through a usage of the swing characteristic amounts and values.

The invention provides a GF (27) finite field and dual authentication-based meaningful (K, N) image sharing and reconstructing method. Ring the sharing period, the sub-band of a secret image LL is scrambled, and the coefficients of bits are backed up by different numbers according to the degrees of importance thereof. Finally, a backup image of the same size with the secret image is formed. After that, secret pixels, backup pixels and the corresponding dual-authentication information are shared in the form of (K, N) in the GF (27) finite field. Based on the optimized LSB method, the shared information and primary authentication bits are embedded into the lower-order bits of a bunker block to maximally ensure the visual quality of distributed bunker images. During the reconstruction process, the shared information for recovery is screened through the primary authentication step. After that, the reliability of recovered secret pixels and the reliability of recovered backup pixels are verified through the secondary authentication step, so that an authentication image, a backup image and a preliminary secret image are formed. In combination with the secret image, a recovered reference image and the authentication image, the non-pass pixels of the secret image during the authentication process are subjected to polynomial fitting repair and alternative repair, so that the repair quality after the attack is better.

The invention relates to a device and a method for preparing anhydrous aluminum fluoride. The device comprises a gas inlet device, a wet aluminum hydroxide metering and feeding device, a single-layerfluidized bed reactor (301), an aluminum fluoride gas-solid separator (302), an aluminum oxide reactor (303), an aluminum oxide gas-solid separator (304), an aluminum hydroxide dryer (305), an aluminum hydroxide gas-solid separator (306), an aluminum fluoride static cooler (501) and a tail gas treatment device, wherein the gas inlet device comprises an air heater (101), a hydrogen fluoride vaporizer (103) and a hydrogen fluoride mixer (102); the air heater (101) and the hydrogen fluoride vaporizer (103) are connected with the hydrogen fluoride mixer (102) respectively; the hydrogen fluoride mixer (102) is connected with the single-layer fluidized bed reactor (301). Through the device and the method, a prepared product has better quality, namely high content, low impurity, large specific gravity and good fluidity, and the energy consumption is low.

The invention relates to the technical field of intelligent control over domestic air refreshing equipment, in particular to an intelligent control method for domestic air refreshing equipment. The intelligent control method for the domestic air refreshing equipment includes the steps of 24-hour time quantum mode setting, environmental information acquisition, information control treatment, load control output and the like. Environmental information is input into a single chip microcomputer through detection unit circuits, and is filtered and acquired by the single chip microcomputer according to a software logical algorithm, the acquired environmental information and set time quantum modes are input into the single chip microcomputer, and after information control treatment is conducted, load output is controlled. According to the intelligent control method for the domestic air refreshing equipment, universal single chip microcomputer resources are used, logical judgment is conducted through the software algorithm, 24 hours in a day are reasonably planned, air quality of each time quantum is adjusted and controlled, and thus the utilization efficiency of the air refreshing equipment is improved, and energy consumption is reduced; and in addition, the purpose of bringing a comfortable and healthy air environment to people is realized, related hardware circuits are simple and easy to maintain, and the software design algorithm is easy to transplant.

The invention relates to a magnetic core. The magnetic core is characterized by comprising an upper magnetic core, a lower magnetic core, an intermediate-column magnetic core and side-column magnetic cores, wherein the upper magnetic core and the lower magnetic core are arranged vertically, the intermediate-column magnetic core is arranged at the middle, the side-column magnetic cores are arranged at the two sides of the intermediate-column magnetic core, the upper magnetic core and the lower magnetic core have first magnetic conductivity, the side-column magnetic cores have second magnetic conductivity, and the intermediate-column magnetic core has third magnetic conductivity. The other technical scheme of the invention provides a magnetic coupling inductor of an interleaving parallel converter. The invention provides a coupling induction magnetic core combination scheme in which magnetic cores having different magnetic materials, different magnetic conductivities and different sizes are matched to one another, thus, the magnetic coupling integrated inductor is wide in magnetic core mode selection range, the coupling degree K is flexible and convenient to adjust, the magnetic core structure of the inductor can be optimized, and mass production cost is reduced.

The invention provides a wide screen projection method by utilizing single projection. The method comprises the following steps: converting image signals of different interfaces into an RGB pixel digital signal, a synchronizing signal and a control signal; subdividing the converted RGB pixel digital signal into N numbered frames of small images, wherein N is a natural number larger than 1; scanning each frame of the subdivided small image, and simultaneously outputting a control signal corresponding to the frame of the small image so as to control light path switchover; respectively transmitting the N numbered frames of the scanned small images to an image display device; utilizing a light source to provide light rays, wherein the light rays irradiates at the image display device after being subject to preprocessing; and after processing each frame of the small image, utilizing the corresponding control signals in the step 003 to control the light path switchover so as to respectively project the small images to the corresponding positions on a screen. The invention adopts a single projection technology to realize wide screen projection; and a control IC used in the invention utilizes a group of RGB signal transmission modules, and coordinates with a group of signals to realize wide screen projection.

The invention discloses a series/parallel connection two-coordinate precise motion locating platform which comprises a support platform component, a first linear bearing, a second linear bearing, a base, a first driving supporting link, a second driving supporting link, a working platform, a first connecting hinge lug and a second connecting hinge lug, wherein, the first driving supporting link and the second driving supporting link are respectively connected with the working platform via the first connecting hinge lug and the first linear bearing as well as the second connecting hinge lug and the second linear bearing; the first driving supporting link is connected with the first connecting hinge lug; the first connecting hinge lug is connected with the first bearing body in the first linear bearing; the first bearing pedestal in the first linear bearing is connected with the working platform; the second driving supporting link is connected with the second connecting hinge lug; the second connecting hinge lug is connected with the second bearing body in the second linear bearing; the second bearing pedestal in the second linear bearing is connected with the working platform; and both the support platform component and the first and the second driving supporting links are fixed on the base.

The invention relates to an output signal detection circuit and a detection method of a dish-washing machine flowmeter, wherein the detection circuit comprises a singlechip, a detection circuit and a flowmeter, the detection circuit receives the output signal of the flowmeter, the signal is processed by the detection circuit and is then transferred to the singlechip, and the singlechip validates the input signal through the detection method. The detection method comprises a low level validation phase, a high level validation phase and a pulse validation phase. The invention has the beneficial effects that: the universal singlechip resources can be utilized, the pulse is identified and processed through the logical judge of the software algorithm, so the purposes of reducing the development cost and improving the water inflow accuracy of the dish-washing machine flowmeter are realized, the hardware is simpler and is easy to maintain, and the software design algorithm is easy to transplant.

The invention provides a TDD synchronization device for 4G/5G, which comprises an HUB and an RU; the HUB acquires TDD configuration information and a TDD downlink radio frequency signal from information source equipment; the HUB transmits TDD ratio information to the RU, the HUB converts a TDD synchronization pulse generated by envelope detection into a radio frequency pulse through a switch and transmits the radio frequency pulse to the RU for detection recovery, and the RU recovers a TDD switching signal according to the radio frequency pulse transmitted by the HUB and the TDD ratio and participates in switching control of radio frequency uplink and downlink. According to the invention, envelope detection is adopted, the implementation is simple, the cost is low, and the synchronization precision of low-power signals or unstable-power signals is difficult to guarantee. And the practicability is high for specific scenes.

The invention discloses a composite shielding insulated tube type bus based on a co-extrusion layer and a manufacturing method. The bus comprises a conductor (1) serving as a main body, a first layer body wrapping the conductor (1) and formed in a co-extrusion manner, and a second layer body wrapping the conductor (1) and distributed in a superposition manner, wherein the first layer body wraps the conductor (1) in the co-extrusion manner, and the second layer body wraps the conductor (1), thereby preventing gaps and bubbles between the first layer body and the conductor (1); and insulating tapes in a lapping form are no longer used, so that the reliability of the insulated tube type bus is improved.

A method for sucking liquid in a vacuum negative pressure state is characterized in that an opening is formed below the liquid level of a negative pressure sealed container, and the opening communicates with an inlet of a suction device in a sealed mode; an outlet of the suction device communicates with a valve and an output pipeline, and a damping balance pipeline is arranged between the outlet of the pump and the valve and communicates with the space above the liquid level in the sealed container.

The invention relates to the technical field of concrete block production equipment, in particular to an aerial fixed type ground turnover table which comprises two fixed beams, the upper ends of the fixed beams are fixed, turnover frames are hinged to the lower ends of the two fixed beams respectively, turnover oil cylinders are further hinged between the fixed beams and the turnover frames, and the turnover oil cylinders are hinged to the turnover frames. A first connecting frame and a second connecting frame are connected between the overturning frames, the first connecting frame is perpendicular to the second connecting frame, a first sliding assembly is arranged on the first connecting frame, and a second sliding assembly is arranged on the second connecting frame. The device is fixed in the air, the position of the overturning oil cylinder is not restrained by the ground space, the stress point is more reasonable, and the overturning oil cylinder is not prone to falling off. The overturning action of the ground overturning platform is more stable, the type selection range of the overturning oil cylinder is wider, the type selection is easier, the design difficulty and the manufacturing cost are greatly reduced, the equipment is fixed in the air, a fixing plate does not need to be pre-buried on the ground, and the plant selection and transformation difficulty is reduced.

The invention discloses a two-motor driving system. The two-motor driving system comprises a left driving shaft, a right driving shaft, a left motor, a right motor and a speed changing box, wherein the left motor and the right motor are respectively symmetrically fixedly connected with the left side and right side of the speed changing box, the system adopts two sets of basically symmetric structures, two sets of motors with relatively smaller power are combined to form an electric driving system with relatively higher power, the requirement for the performance parameter indexes of system parts is almost half reduced, and the model selection range of device is wider, and the cost is lower; the symmetric mechanical and electrical structure can effectively balance the vibration, mechanical and electrical performance inside the system, the system comfort and reliability can be improved, and the torque steering effect can be effectively eliminated; and the electronic differential control is realized by virtue of a controller, no mechanical differential structure is used, and the complexity for adding a gear assembly is far lower than that of canceling the differential structure.