31results about How to "Reduce overlap rate" patented technology

A uniform light spot surface scanning device of a laser cleaning machine comprises a laser output module (10), a gauss-flat top system, a gradually-changing rotating polygonal mirror (50), a drive motor (60) and a collimation focusing lens (70). The gauss-flat top system redistributes the energy of a gaussian laser beam emitted by the laser output module (10) and compresses the diameter of the laser beam at the same time, so that a laser beam with uniform energy is formed; the laser beam irradiates the gradually-changing rotating polygonal mirror (50); the gradually-changing rotating polygonal mirror (50) is driven by the drive motor (60) to rotate so as to make the laser beam form a space angle scanning beam; the space angle scanning beam is refracted by the collimation focusing lens (70) and then forms surface light spots on an object (80) to be cleaned.

The invention relates to laser processing and in particular relates to a prismatic irregular hole underwater laser shock peening method and a device for realizing the same. The method comprises the following steps: precisely matching a matching pin of which the surface hardness value is higher than that of a workpiece with a prismatic irregular hole, putting the workpiece in an underwater opposite hole side area and performing laser shock peening; introducing incident laser beams into the prismatic irregular hole for peening the inner wall of the prismatic irregular hole by utilizing a total reflector arranged in the prismatic irregular hole, adopting large-size square light spot laser beams in a non-prismatic area, adopting small-size square light spot laser beams in gradual transition in a prismatic area, and linearly changing the sizes of the light spots perpendicular to the edge direction in the prismatic area, wherein the sizes of the light spots are smaller at positions closer to the edge. Meanwhile, a jump mode and a thickened absorption layer are matched, the laser shock peening quality is guaranteed. According to the method, hole edge collapse and a plasma shielding effect can be effectively avoided, and the method is suitable for peening the inner wall of the prismatic irregular hole with the edge angle of less than 90 degrees and a hole edge area.

The invention discloses a voice remote control method and apparatus. The voice remote control apparatus includes the following steps: receiving a voice command; performing voice identification on thevoice command, and acquiring a control command; performing ultrasonic encoding on the control command to generate an ultrasonic remote control signal; and emitting the ultrasonic remote control signalto the outside. Therefore, the voice remote control apparatus can realize voice remote control through ultrasonic wave, and can free the two hands of a user. Besides, the user does not need performing networking operation or matching operation manually, so that the operation convenience can be improved; ultrasonic communication belongs to point-to-point communication, and is higher in safety; thecoincidence rate between the ultrasonic wave and the other electromagnetic signals is lower, so that the ultrasonic wave is not easy to be influenced by the other electromagnetic signals, and the remote control stability is higher; as the ultrasonic wave is radiated and propagated in the air, the voice remote control apparatus does not need to align with the controlled equipment, so that the operation convenience is improved and multiple controlled devices can be remotely controlled conveniently; and the safety, the stability and the convenience of remote operation can be improved, and the remote control performance can be greatly improved, and the user experience can be improved.

The invention discloses an underwater imaging device and method by using a laser point for scanning. The device comprises a light source, an imaging unit and a synchronous circuit; the light source isa laser point scanning light source, and the laser point scanning light source comprises a semiconductor laser module; the imaging unit is a camera or a vidicon of a CMOS image sensor with a rollingshutter exposure function; and the whole device is placed on the same side of a shot object. According to the underwater imaging device and method in the invention, the laser point is used for scanning the light source; compared with a linear light source or a strip-shaped light source, the structure is simpler, the size is smaller, and the energy utilization rate is higher. According to the device and the method in the invention, a plurality of semiconductor lasers can be used for synthesizing a beam of laser, so that the power of the light source can be improved, and the light source is enabled to contain multiple wavelengths; a better backward scattering eliminating effect or a better color correcting effect can be achieved by changing the wavelength of the light source under differentwater qualities. According to the underwater imaging device and method in the invention, the scanning speed is higher, the power consumption is lower, the stability is higher, and the size is smaller.

The invention provides a user verification method and a user verification system, which is applied to a network system composed of a client and a server. The user verification method comprises the steps of displaying a verification code image when the user verification is required, wherein the verification code image comprises at least one Chinese character in the horizontal direction and at least one Chinese character in the vertical direction; receiving the Chinese character in the horizontal direction from a first input field, and receiving the Chinese character in the vertical direction from a second input field; and conducting the user verification according to the received Chinese character in the horizontal direction and the received Chinese character in the vertical direction. During the user verification process, when the received Chinese character in the horizontal direction and the received Chinese character in the vertical direction are completely the same with the Chinese character of the verification code image in the horizontal direction and the Chinese character of the verification code image in the vertical direction, the user verification is approved successfully. Due to the adoption of the technical solution of the present invention, whether the verification object is a person or a computer can be judged more accurately.

The invention relates to a method for carrying out identity recognition and registration on equipment accessing to a network. In the process method, information is obtained by operating programs in corresponding network equipment and terminals; obtained content refers to an IP (Internet Protocol) address, a physical MAC (Medium/Media Access Control), a logic MAC (Medium/Media Access Control) and other key information of the network equipment and terminals, such as identities of the serial number /type/size of an internal memory, the serial number/type/size of a CPU (Central Processing Unit), the number/type/size of a hard disk and the like; and the identities are network identity genes similar to biological genes and are important information of the identities of network members. A plurality of the key information of the network equipment and terminals can be combined together so that the probability of being coincident in combined identity information is greatly reduced; and meanwhile, the combined identity information is registered and recorded by a third party, therefore, the accurate identity recognition method is realized. Therefore, accurate identity recognition is carried out on the equipment connected in the network.

The invention discloses a mobile terminal desktop icon data change method and device, and relates to the field of mobile communication. The method comprises the following steps: obtaining an edition triggering signal which is used for representing to edit a desktop icon; starting a system broadcast which is switched to an editable mode; obtaining a selection signal which is used for representing to edit a target desktop icon; obtaining a data change manner of the target desktop icon, wherein the data change manner comprises field and/or image data change; and carrying out a field change operation on the target desktop icon according to the data change manner. According to the mobile terminal desktop icon data change method and device, the data change manner comprises field and/or image data change, and field and/or image data change operation is carried out on the target desktop icon according to the data change manner, so that the integration of the desktop icon data is realized and the optimized presentation of the desktop icon is realized.

The invention belongs to the field of nano materials, and discloses a preparation method of a carbon material loaded tubular carbon nitride photocatalyst. The photocatalyst with large specific surface area, multiple active sites, high photon-generated carrier separation and migration rate, low photon-generated carrier coincidence rate, visible light absorption red shift, high photocatalytic activity and high stability is obtained by adjusting the mass fraction of the carbon material. The preparation method comprises the following steps: S1, uniformly mixing the carbon material with sodium chloride, potassium chloride, lithium chloride and melamine, and calcining in a corundum crucible; in the step S1, the preparation method of the carbon material comprises the following steps: (1) cutting the white part of the shaddock peel into blocks, drying, soaking in a KOH solution, and freeze-drying; (2) calcining a sample in a tubular furnace, and washing the sample with HNO3 and ultrapure water until the sample is neutral to obtain a carbon material; and S2, washing the product with ultrapure water and ethanol, drying and collecting. The photocatalyst obtained by the invention promotes the improvement of the hydrogen production performance by photolysis of water, and provides a new thought for further development of efficient photocatalysts.

The invention provides a method for generating a non-fixed address code, which belongs to the field of encoding and comprises the following steps: operating a remote controller in a working state; ifthe operation triggers a preset operation condition, obtaining a state parameter of the remote controller when the preset condition is triggered; and generating a random address code corresponding tothe remote controller according to the state parameter. Different address codes with randomness are generated in real time through the current state of the remote controller; a pairing process with atarget device is completed by means of the address code; the mode of storing a preset number of address codes in advance in the prior art is abandoned, the upper limit of the number of target hosts capable of being paired with the remote controller is increased, and the probability that the availability of the target device is reduced due to unavailable pairing is reduced.

The invention discloses a method and device for scrambling code distribution. The method comprises the steps of determining to-be-distributed scrambling code cells according to the scrambling code programming sequence of cells; determining optimal candidate scrambling codes for the to-be-distributed scrambling code cells according to the set scrambling code programming avoiding principle and the adjacent region relations of the to-be-distributed scrambling code cells; distributing the optimal candidate scrambling codes to the to-be-distributed scrambling code cells; and if the number of the optimal candidate scrambling codes is plural, selecting a candidate scrambling code among the multiple optimal candidate scrambling codes and distributing the candidate scrambling code to the to-be-distributed scrambling code cells according to the correlation measurement values of the optimal candidate scrambling codes and scrambling code of a first round of cells, so as to reduce the compound code coinciding probability after scrambling code distribution and reduce same frequency interference of the adjacent cells.

The invention discloses a seed node determination method and system based on random walk. The method comprises the steps of firstly, obtaining network structure and node neighbor information accordingto original data in a network; secondly, determining the required number and random walk parameters of seed nodes according to the information; then randomly walking from each node in the current network, and sequentially obtaining the first seed node to the kth seed node; and finally forming a seed node set by utilizing the k seed nodes. The system comprises a network structure and node neighborinformation determination module, a parameter determination module, a random walk module and a seed node combination acquisition module. According to the invention, the probability that the network ranges of two nodes coincide with each other can be reduced, and the accuracy of judging the node with the maximum influence is effectively improved.