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

The invention relates to the technical field of civil air defense engineering, and discloses an explosion-proof floor drain for civil air defense engineering. Two side casings are respectively mountedon the left and right sides of a main casing and communicate with the main casing, two side cylinder bodies are respectively fixedly mounted at the tops of the two side casings, two connecting pipesfixedly communicate with the two side cylinder bodies respectively, the tail ends of the two connecting pipes penetrate through the left and right sides of the main casing respectively and extend to the inner side of the main casing, two one-way air valves are mounted on the parts, located at the main casing, of the connecting pipes respectively. According to the explosion-proof floor drain for civil air defense engineering, the coincidence rate between an inner hole and an outer hole gradually decreased, so that the purpose of reducing the water discharge amount of a floor drain is achieved,meanwhile the coincidence rate between the inner hole and the outer hole is decreased, thus the weakening of shock waves by the device is gradually increased so as to achieve the effect of improving the protection of the explosion-proof floor drain, normal drainage can be conducted, harmful gas can be prevented from diffusing through underground pipelines, and thus the protection of the device during normal use is improved.

Disclosed is a cover of a combined type heat collecting tile. The cover and a grooved seat (1) are matched with each other to form the combined type heat collecting tile. The cover (2) specifically comprises an upper cover (201) and a lower cover (202); cavities are respectively arranged in the middle of the upper cover (201) and the middle of the lower cover (202), and the upper cover (201) and the lower cover (202) form a double-layer structure; and the upper cover (201) and the lower cover (202) are light-transmittance structural members specifically. The cover of the combined type heat collecting tile has the advantages that a combination form of the cover and a building roof heat collecting system is different from a combination form in the prior art, and an overlapping ratio among covers is low; high construction quality can be achieved and a good technical effect can be realized by a simple construction scheme during construction, requirements on construction personnel are obviously reduced, the labor cost is greatly reduced, and the construction efficiency is improved; and accordingly the cover has expectable huge economical value and social value.

The invention discloses a network registration method and system based on a dynamic graphic password. The method includes: a server receives a registration request sent by a client, selects a positioning factor in a positioning factor library according to the structure of a dynamic factor table of all elements, and generates a positioning factor. factor string, and send the generated positioning factor string to the client, and the client generates a full-factor dynamic factor table according to the structure of the full-factor dynamic factor table and the positioning factor string, and the user inputs two parameters through the full-factor dynamic factor table. Set a dynamic graphic password, and send the registration information including the user name and the positioning rule corresponding to the dynamic graphic password to the server; if the registration information is correct, use the positioning rule in the registration information as the user's password . In this method, the input dynamic graphic password is used as the password stored by the user, which is safer, easier to remember and difficult to crack than the traditional password composed of fixed numbers or characters.

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 TiO2-quantum-dot-and-MoS2-nanometer-flower-combined heterojunction semiconductor material comprising MoS2 nanometer flower and TiO2 nanometer particles. A large amount of the TiO2 nanometer particles are uniformly distributed on the surface of the MoS2 nanometer flower, and are well compounded on the pedals. The TiO2 nanometer particle phase is in a punctiform dense distribution. The invention also discloses a preparation method of the TiO2-quantum-dot-and-MoS2-nanometer-flower-combined heterojunction semiconductor material. According to the method, with a two-step solvothermal method, the punctiform TiO2 nanometer particles are uniformly grown on the MoS2 nanometer flower, such that the material with a good composite morphology is obtained. The method provided by the invention has the advantages of simple operation, high yield, low preparation cost, and the like. The material provided by the invention has great development and application potential in the fields of photo-catalysis industrial wastewater and field emission.

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.

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 discloses a method and system for management of a dynamic graphic password. The method comprises the steps that a client side generates a total-element dynamic factor list according to dynamic graphic password management strategies from a management server, wherein the dynamic graphic password management strategies comprise a password content strategy, a password format strategy, a password level strategy and a password prompt strategy; and the dynamic graphic password is input into the full-element dynamic factor list according to the dynamic graphic password management strategies. The password management strategies are set for the dynamic graphic password, so that the risk in a high coincidence of the graphic passwords can be controlled effectively; the problem of low safety of the graphic password caused by the too simple dynamic graphic password input by a user can be avoided; a safety level of a dynamic graphic password authentication system can be increased; and further, overall safety and stability of the system can be ensured.

The invention provides a steel tube joint. The steel tube joint comprises a main tube and branch tubes. The axes of the branch tubes intersect with the axis of the main tube. The main tube and the branch tubes are all steel tubes. The steel tube joint is characterized in that a base plate is arranged between the main tube and the branch tubes. Compared with the prior art, the steel tube joint is more reasonable in structural arrangement, overcomes defects of a traditional tubular joint, improves welding conditions of welding joints and obviously improves bearing capacity and stress states.

The invention discloses a one-time dynamic location authentication method, system and password change method. The method includes: an authentication server receives an authentication request from a client, generates a location factor string, and includes the location factor string and all element dynamic The generation information of the factor table structure is sent to the client, and the client receives the generation information, generates a full-factor dynamic factor table, and maps the positioning factor string to the full-factor dynamic factor table, and obtains the user according to the first location. The dynamic graphic password entered by the rule, and sent to the authentication server, the authentication server receives the dynamic graphic password from the client, if the first positioning rule corresponding to the dynamic graphic password analyzed is consistent with the preset positioning rule, Then the authentication is successful. Combining the image and easy-to-remember features of graphic passwords with the variability of one-time dynamic passwords improves the overall convenience and security of the authentication system.

The invention discloses an underwater imaging device and method using laser point scanning. The device includes a light source, an imaging unit and a synchronous circuit; the light source is a laser point scanning light source, and the laser point scanning light source includes A semiconductor laser module; the imaging unit is a camera or video camera with a CMOS image sensor with a rolling shutter exposure function; the whole set of devices is placed on the same side of the object to be photographed. The present invention uses a laser point scanning light source, which has a simpler structure, smaller volume, and higher energy utilization rate than a linear light source or a strip light source. The present invention can use multiple semiconductor lasers to synthesize a beam of laser light, which can not only increase the power of the light source, but also make the light source contain multiple wavelengths, and achieve better backscattering elimination effect by changing the wavelength of the light source under different water qualities, or Color correction effect. The invention has higher scanning speed, lower power consumption, higher stability and smaller volume.

The invention discloses a wavy MoS2 nanosheet inlaid TiO2 dandelion nanosphere composite heterojunction semiconductor material. The wavy MoS2 nanosheet inlaid TiO2 dandelion nanosphere composite heterojunction semiconductor material contains MoS2 nanosheets and TiO2 dandelion nanospheres, wherein the MoS2 nanosheets penetrate through the space among nanorods on the TiO2 dandelion nanospheres uniformly and can be stably combined with gaps among the nanorods,. The invention also discloses a method for preparing the wavy MoS2 nanosheet inlaid TiO2 dandelion nanosphere composite heterojunction semiconductor material by a two-step solvent method. The wavy MoS2 nanosheet inlaid TiO2 dandelion nanosphere composite heterojunction semiconductor material and the method have the advantages that the preparation operation is simple, the yield is high and the cost is low, and the wavy MoS2 nanosheet inlaid TiO2 dandelion nanosphere composite heterojunction semiconductor material has great potential and wide application prospect in the fields of photo-catalytic industrial wastewater and field emission.