31results about How to "Low application environment requirements" patented technology

The invention belongs to the technical field of mobile platforms, in particular to an omnidirectional mobile platform. It includes wheels, a motion control unit, a motion execution unit and a platform base, wherein the motion control unit is arranged above the platform base, and four wheels are respectively installed on the bottom of the platform base through four motion execution units, and each motion execution unit is connected with The motion control unit is connected; the tire tread of the wheel is provided with twill. The twill pattern includes a plurality of slanted grooves and a plurality of slanted blocks inclined along the same direction, and the slanted grooves and slanted blocks are alternately arranged at intervals. The chute and the inclined block are parallel to each other. The invention can reduce the cost, meet the requirements of small size, reduce the requirements of the application environment, have the characteristics of simple structure, etc., and increase the achievable scope of the omnidirectional mobile platform application.

The invention relates to a holographic imaging device and an imaging method thereof. The holographic imaging device comprises a rectangular frame, a first display screen, a planar structure and a second display screen, wherein the rectangular frame is arranged at a preset inclination angle with the ground, and a holographic film is fixed on the frame; the first display screen is arranged on the first side of the rectangular frame, is perpendicular to the ground and is used for displaying a foreground picture; the planar structure is arranged on the second side of the rectangular frame and comprises a first plane, a second plane and a third plane, the first plane, the second plane and the third plane are sequentially connected together at preset angles, and the third plane is connected with the bottom end of the rectangular frame; and the second display screen is arranged on the second plane and is used for displaying a background picture. According to the technical scheme, the requirement of the holographic imaging device for the application environment is lowered, and the ideal visual presentation effect is achieved.

The invention relates to a formula of an adhesive for metal and an application of the adhesive, in particular to a formula of adhesive primer for hot vulcanization of chloroprene rubber and metal parts and belongs to the field of preparation processes of the adhesive for metal. The formula of the adhesive for metal comprises raw materials in parts by weight as follows: 100 parts of a polyisocyanate adhesive, 40-60 parts of chlorinated rubber cement containing chlorinated rubber and a solvent as well as 40-60 parts of chloroprene rubber cement containing chloroprene rubber and a solvent. The application of the adhesive for the metal comprises the steps as follows: (1) preparation of the chloroprene rubber cement; (2) preparation of the chlorinated rubber cement; (3) compounding; (4) coating; (5) vulcanization. The vulcanization bonding strength of the adhesive with metal is greatly improved, the bonding strength is about 10 MPa, and the preparation process is simple and feasible while the bonding performance is improved. The adhesive has low requirements for application environments and little use limitation.

The invention relates to a trunk injection liquid agent for Japanese red pine branch trunk pests as well as a preparation method and application of the trunk injection liquid agent. The trunk injection liquid agent is prepared from the following raw materials in percentage by weight: 0.1-20% of imidacloprid, 15-25% of acetic acid, 1-10% of a surfactant, and 1-5% of a penetrating agent, with the balance being a solvent. Compared with existing trunk injection liquids, the trunk injection liquid has the characteristics of low toxicity, high efficiency, low residue, safety to human, livestock, plants and natural enemies and the like. The preparation method is simple in process, low in cost and good in plant absorption; according to the application, more than 80% of organic solvents are reduced, and the risk of environmental pollution is greatly reduced. The application is not influenced by weather and the height of the tree body, and the prevention and treatment effect is better.

The invention relates to the technical field of welding wires, in particular to a self-shielded welding wire and a manufacturing method thereof. Through adding metal fluoride and limiting the carbon content of components of raw material, the spatter loss rate is decreased in the process of welding application, then waste of welding rods in welding treatment is avoided, and the toughness of welding seams is improved; especially, in combination with the reasonable proportion design of the components of the raw material, the welding wire can be applied under any conditions, and the requirement for strength can be met as well; when metal coating experiment treatment is performed at normal temperature or at the high temperature of 600 DEG C, the hardness (HRC) of the welding wire can reach above 60, the tensile strength of the manufactured welding wire reaches above 310 MPa, the elongation after breakage reaches above 41%, the hardness reaches 31 HRB-57 HRB, and the roughness reaches 0.2 micron-0.5 micron.

The invention discloses a liquid crystal material color domain widening device which comprises a bias initiation polarization device, a first liquid crystal layer, a second liquid crystal layer and abias detection polarization device in sequence in the light path direction in parallel. The angle of the light-permeable axis direction of the bias initiation polarization device is 0 degree. On the basis, the orientation angle of liquid crystal molecules in the first liquid crystal layer is 0 degree, and the distortion angle of the liquid crystal molecules is 720 degrees; the orientation angle ofliquid crystal molecules in the second liquid crystal layer is 0 degree, and the distortion angle of the liquid crystal molecules is 720 degrees. The liquid crystal material color domain widening device is simpler in structure on the premise of realizing the same color domain widening effect and is a more excellent color domain widening device without the view angle problem.

The invention discloses a white granulated sugar bag automatic counting device and method based on machine vision. The device comprises a conveying belt frame body, a conveying belt, an equipment bracket, an industrial computer, a line laser fixing head, an industrial camera fixing head, a line laser and an industrial camera. The line laser and the industrial camera are installed on the equipmentsupport through the line laser fixing head and the industrial camera fixing head respectively. The method is used for laser contour generation and acquisition, an industrial computer slices a plurality of frames of white granulated sugar bags to segment the relative envelope area in a contour image, the number of the bags is calculated after comprehensive analysis, and the method comprises the steps of image preprocessing, laser stripe center line extraction, center line breakpoint compensation, relative envelope area calculation and bag number comprehensive calculation. Automatic counting inthe white granulated sugar bag conveying process is achieved, the problems that white granulated sugar bags are difficult to count in complex postures such as bag connection and bag stacking, and manpower consumption is large are effectively solved, the bag counting accuracy is effectively improved, and the labor cost of enterprises is reduced.

The invention discloses a preserved egg crack online detection method and device based on machine vision. The detection device comprises a conveyor belt, a camera obscura, a light source, an industrial camera, an electromagnetic valve, a controller and a computer. The method comprises the following steps: 1 collecting preserved egg images; 2, automatically cutting the preserved egg images; 3, preprocessing the preserved egg images; 4, extracting relevant characteristic parameters; 5, establishing a crack discrimination model; 6, judging whether cracks exist on a surface of a preserved egg. According to the method, the machine vision is used for detection, the online detection and grading of preserved egg cracks can be achieved, the application environment requirement is low, the equipmentcost is low, the selection freedom degree is high, and better application and popularization prospects are achieved compared with acoustic detection; the industrial camera is used for overturning thepreserved egg for multi-angle photographing such that the detection range is wide; Haar feature detection is utilized, an area is automatically selected, and the method and the device are real-time, concise, accurate and high in flexibility; the images are efficiently processed, a discrimination model is established, and an effective detection method is provided for a relatively vacant part of online detection of the preserved egg cracks.

The invention relates to a magnetic levitation hub lamp. The magnetic levitation hub lamp is characterized by comprising a rotor assembly and a stator assembly, the rotor assembly comprises a rotor housing and a first annual permanent magnet, an opening is arranged in the upper end of the rotor housing with a concave cavity, a clamping slot clamping with an automobile hub is arranged in the outerside face of the rotor housing, and the first annual permanent magnet is arranged in the cavity of the rotor housing; the stator assembly is magnetically levitated in the rotor assembly and is limitedin the cavity of the rotor assembly and comprises a stator housing, a light emitting part and a generating coil, the stator housing is covered in the rotor housing, the generating coil is arranged onthe outer side of the stator housing in the cavity of the rotor housing, and the light emitting part and the generating coil are electrically connected with one closed loop circuit. The magnetic levitation hub lamp is long in service life and convenient in mounting and maintaining, and safety of the hub lamp falling off due to vibration of an automobile is no need to worry about.

The invention discloses a square check valve. The square check valve comprises a door leaf and a door frame, wherein the door frame comprises a fixed frame and a door leaf abutting joint frame; the fixed frame is fixed to an installing wall through bolts; the fixed surface of the door leaf abutting joint frame is welded to the fixed frame; the included angle between the abutting joint surface of the door leaf abutting joint frame and the fixed surface of the door leaf abutting joint frame is an acute angle; a plurality of door leaf connecting plates are arranged on the top edge of the fixed frame; a plurality of rotating shaft connecting sheets which are matched with the door leaf connecting plates are arranged on the top of the door leaf; and the rotating shaft connecting sheets and the door leaf connecting plates are connected together through shaft pins, so that the door leaf can rotate around the shaft pins. The square check valve is simple in structure and long in service life, can automatically open and close, and has little maintenance amount in later period.

The invention relates to a method and system for judging a disaster risk level based on rain condition data, belongs to the technical field of artificial intelligence data analysis, and solves the problem that the wind direction level and trend of a future disaster cannot be effectively predicted in the prior art. The method comprises the following steps: acquiring rainfall data of each station, and constructing a rainfall accumulation histogram of each station according to a time sequence; inputting the rainfall accumulation histogram into a corresponding current optimal disaster risk level prediction model, and obtaining disaster prediction risk level information corresponding to a prediction moment and corresponding probability information; acquiring actual risk level information at a prediction moment; and when the disaster prediction risk level information corresponding to the prediction moment is different from the actual risk level information, training the disaster risk level prediction model of the site by using the rainfall accumulation histogram marked by the actual risk level of the site, and updating the current optimal disaster risk level prediction model of the site.

A barcode is a coding system used for individual identification in a coding and decoding field. An EAN (International Article Numbering Association)-13 code can be easily counterfeited. A barcode generation system based on a Hash function realizes anti-counterfeiting authentication through a Hash function. The system also adopts the EAN-13 code, defines content represented by each code bit in a self-actuated way, and adopts a 6+6+1 way. The first six bits of batch numbers CT6 of the barcode are obtained through a way that the high 19bit of a current computer clock (CT) is intercepted and is converted into six bits of decimal numbers; and the middle six bits of authentication codes (AC) of the barcode are obtained through a way that front 19bit output by a Hash function is intercepted and is converted into the six bits of decimal numbers, i.e. AC=MSB (Most Significant Bit)19[Hash(CT||Ki)], wherein Ki is a password set for a commodity by a manufacturer and contains more than eight characters, || means cascade operation, (h) in the MSB(h) means that the front i-bit of h is intercepted, and a generation way of the last bit of check code of the barcode is identical with the generation way of the common EAN-13 code. The system also can be used in a common code reader, can improve the management efficiency of the commodity by the manufacturer, saves cost, realizes the anti-counterfeiting authentication of the commodity, is mainly used for generating the barcode required for the commodity, and realizes the logistics management, the market monitoring and the statistical decision of the commodity.