268 results about "Black line" patented technology

The invention provides an AGV trolley indoor positioning and navigation system and a control method thereof. The system comprises a black line grid module which is an nxn black line grid, wherein thenode of each grid is provided with a two-dimensional code and each two-dimensional code has position information; at least one AGV trolley which comprises a driver used for movement, a black line tracking sensor which is used for identifying the black line grid, a two-dimensional code identification module which is used for reading the two-dimensional code information of the current node and a control module which sets the movement path from the initial position to the target position; and a central monitoring and scheduling system which establishes a two-dimensional code information database,communicates with all the AGV trolleys through a wireless communication module and plans the movement path of the AGV trolleys as a whole. The beneficial effects of the AGV trolley indoor positioningand navigation system and the control method thereof are that the movement path can be flexibly adjusted in real time, real-time accurate positioning can be realized, the positioning and navigation accuracy requires to be centimeter or higher level, and the system is simple and reliable, fast in response speed, high in anti-interference capacity and low in cost.

Systems, devices, apparatus and methods of attracting and capturing flies with toxicant treated darkened cords and printed or painted strips on sidewalls of housings. The darkened cords and strips black to confuse flies into believing they are cracks and crevices. Flies feed off the insecticide treated strips and are killed over time. At least one black line over a blue background can simulate a harborage to attract flying insects. At least one black line over a sticky surface card can be used. Geometrical housing shapes can include triangular, pentagon, cylindrical, rectangular, square, cube and / or other geometrical shapes. Housings can be tied off to be suspended. Second housings can be suspended beneath a main housing by attaching strips to the lower suspended housing. The housings can also work in an unassembled state where planar type sheets can be mounted on a wall.

The invention discloses a high-end anodic oxidation aluminum strip for the 3C (computer, communication and consumer electronic) industry and a production method of the high-end anodic oxidation aluminum strip. Chemical alloy elements of the aluminum strip comprise Si, Fe, 0.04-0.08% of Cu, Mn, 2.3-2.5% of Mg, Cr, Zn, 0.008-0.012% of Ti and the balance Al, wherein the percent of Si is smaller than or equal to 0.03%, the percent of Fe is smaller than or equal to 0.05%, the percent of Mn is smaller than or equal to 0.01%, the percent of Cr is smaller than or equal to 0.01%, and the percent of Zn is small than or equal to 0.01%. The production method includes: smelting the aluminum alloy elements to obtain aluminum alloy ingots by casting; subjecting the aluminum ingots to end sawing and surface milling; performing soaking and heating treatment; sequentially carrying out cold rough rolling and hot finish rolling; subjecting aluminum alloy coils to intermediate annealing or stabilization treatment, and finally cleaning, dividing and packaging. By the aluminum strip produced according to the production method, quality problems of high internal hydrogen content, texture nonuniformity, surface black lines, streaks and the like in production of aluminum alloy strips for electronic appliances in the prior art can be solved effectively.

The invention provides a six-series high-surface mobile phone aluminum alloy shell. The six-series high-surface mobile phone aluminum alloy shell is obtained by carrying out stamping, machining and oxidization on an aluminum alloy plate, and the aluminum alloy is an aluminum alloy 6061. Starting from the raw material of the aluminum alloy plate of the mobile phone aluminum alloy shell, by combining the strength requirement of the mobile phone aluminum alloy shell and the appearance requirement of the high surface, special selection is carried out on the type of the aluminum alloy, the components of the aluminum alloy are creatively selected and combined and supplemented by specific proportion contents, the specific aluminum alloy 6061 is selected as the aluminum alloy plate, and thereforethe material line defect and the black line defect are eliminated from the basic aluminum alloy plate, the rejection rate caused by the material line defect and the black line defect is greatly reduced, the working procedures are simple and suitable for application and popularization of industrial mass production, and important actual significance and market prospects are achieved.

The invention discloses high-strength aluminum alloy for electronic product outer parts and a preparation method thereof. The aluminum alloy is prepared from the following components according to masspercent: 4.5 to 5.5% of Zn, 0.8 to 1.0% of Mg, 0.3 to 0.5% of Cu, 0.05 to 0.15% of Mn, 0.01 to 0.03% of Y, 0.04 to 0.06% of Ti, 0.005 to 0.01% of Sr, less than or equal to 0.1% of Fe, less than or equal to 0.1% of Si and the balance of Al and inevitable other impurities. The preparation method comprises the steps of smelting and preparing an aluminum alloy solution, performing spray refining in afurnace, performing online refinement and modification, performing online degassing and filtration, performing semicontinuous casting, homogenizing cast ingots, heating and extruding, and performingonline quenching and artificial aging. According to the high-strength aluminum alloy and the preparation method, the cleanliness of the aluminum alloy and the uniformity of tissue components are increased, Fe-enriched phases and continuous intercrystalline network MgZn2 phases are refined and modified, and the defects of black lines, black dots and the like of an oxidation film are eliminated, sothat recrystallized fine equiaxed grains are obtained by extruding the aluminum alloy, tissue stripes and piebald of the oxidation film are eliminated, and the quality of the oxidation film is increased. The aluminum alloy has the advantages of high strength, good plasticity and excellent oxidizing and coloring effects and is suitable for manufacturing outer structural parts of various electronicproducts.

The invention discloses a local aluminium surface-back-field solar cell. The local aluminium surface-back-field solar cell includes a crystalline silicon wafer, wherein the back surface of the crystalline silicon wafer is provided with a passivation layer and a back electrode; and the front surface of the crystalline silicon wafer is provided with an emitting electrode, an anti-reflection layer and a front electrode. The local aluminium surface-back-field solar cell is characterized in that a laser open hole or open groove is formed in the passivation layer on the back surface of the crystalline silicon wafer; the laser open hole or open groove is provided with a first layer of local back surface aluminium paste covering the laser open hole or open groove; the first layer of local back surface aluminium paste, the front electrode and the back electrode are formed together through sintering; and a second layer of back surface aluminium paste which processed through high temperature is arranged on the first layer of local back surface aluminium paste. The local aluminium surface-back-field solar cell can greatly reduce the voidage of the local aluminium surface-back-field cell through optimization of aluminium paste printing and the sintering technology so as to solve the problem that black points and black lines appear during the electroluminescent process and improve the photoelectric conversion efficiency of the cell. The invention also discloses a preparation method of the local aluminium surface-back-field solar cell.

The invention discloses a storage conveyer car with automatic tracking and obstacle avoiding functions. A black line is set on the ground of a warehouse while the rest of the ground is brushed with white color. An infrared sensor below the head of a car emits light ray downwards and receives reflection ray, whether the storage good conveyer car deviates from the black line or not is judged according to the difference between the reflection rays from the back line and the white ground, so that the conveyer car is controlled to return to the back line as set and the tracking function is achieved. Locations and distances of the conveyer car from obstacles are measured by a camera and an ultrasonic sensor right above the head of the conveyer car, and then the optimum obstacle avoiding route is calculated; further, by the aid of infrared sensors and photoelectric encoders on the left side and the right side of the conveyer car, the conveyer car bypasses the obstacles to return to the back line, and accordingly, the obstacle avoiding function is achieved. The storage conveyor car is simple and convenient, has high reliability, low cost and high practicability, and can meet the requirement of automatically conveying storage goods.