425 results about "Inverted triangle" patented technology

The present invention provides a bottom lighting backlight module comprising: a light reflecting plate, a plurality of light sources such as lamp and LED; and a diffusion sheet; wherein said diffusion sheet has an excavated structure of shape with cross-section of an inverted triangle having a specific apex angle ranging from 110 degrees to 130 degrees. Some of the light incident on the excavated structure inside the diffusion sheet can be totally reflected and redirected sideways, so that it is possible to reduce the local brightness for area around each light source but significantly improve the evenness of brightness for the whole module.

The invention discloses a relay-intercropping cultivation method of polygonatum sibiricum. The relay-intercropping cultivation method is characterized in that an uncaria relay-intercropping mode is adopted and imitated wild plantation is performed at borderlands of mountain forests. The cultivation method comprises following steps of: firstly, selecting moisture and completely-shaded land parcels; secondly, performing fixed planting operation on uncaria seedlings in accordance with 1.0m*1.5m distance between plants; thirdly, making a compartment surface, 50cm wide and 30cm high, between lines of uncarias; fourthly, planting two rows of polygonatum sibiricum on compartment surfaces in the shapes of regular triangles or inverted triangles; fifthly, managing uncaria and polygonatum sibiricum daily and preventing and controlling plant diseases and insect pests; and lastly, timely harvesting and processing polygonatum sibiricum.The relay-intercropping cultivation method of polygonatum sibiricum has following beneficial effects: a shed may not be required for shading since a growth condition is provided for imitated wild growth of polygonatum sibiricum, thereby solving the problem that manually-planted medicinal materials have poor quality; and high yield of polygonatum sibiricum is realized while an additional amount of uncaria is harvested such that land resources are fully utilized and comprehensive income is increased.

Cleaning of dirty rectangular sheets of fabric must proceed through such steps as laundering, dewatering, drying, spreading, and ironing. At present, the spreading step remains yet to be automated and, therefore, must be manually carried out. Several methods and apparatuses are disclosed which enable a rectangular sheet of fabric to be spread by gripping the rectangular sheet of fabric at one corner thereof and another corner diagonals to the one corner and suspending the rectangular sheet of fabric in the shape of an inverted triangle and, after the edge of the rectangular sheet of fabric is deprived of a twist and is consequently straightened, gripping the rectangular sheet of fabric at an arbitrary corner and a point terminating an arbitrary width of an edge extended from the arbitrary corner and spreading the rectangular sheet of fabric by means of the grips. The methods and apparatuses enable the spreading step to be automated. Thus the whole process for cleaning dirty rectangular sheets of fabric is automated by this invention.

The invention discloses a cutting method of an LED chip. The method comprises drawing scratches by use of laser on the back surface of the chip and performing saw cutting by use of a diamond saw blade knife, wherein the saw blade knife is an isosceles inverted triangle with a symmetrical left portion and right portion, and the included angle between a knife side surface and a horizontal line is 30 DEG to 60 DEG. The method further comprises performing overturning and film reversing on the back-cut chip and cutting the front surface of the chip along grooves to form crystal grains by use of a splinter knife. According to the invention, the problems of backside collapse, burr and the like by use of a conventional saw blade process are solved, the problem of ablation brought by laser cutting is avoided, and the method is simple to operate and easy to realize.

A supplemental brake light assembly for viewing from the front of the vehicle includes embodiments where the indicator is visible for one hundred eighty degrees (180°) and may be afforded by the implementation of one or more sources. The primary light can be integrated within the bumper or retrofitted, and in one embodiment is elongated to go along the bumper and around the edges to be visible from both the front and sides of the vehicle. In another embodiment three brake lights are front-mounted to present an inverted triangle for so distinguishing from the conventional triangle appearance of the rear brake lights. The upper lights are positioned adjacent the headlight assemblies or the turn signals to form the top of the triangle, and are wrapped about the corners of the vehicle to obtain one hundred eighty degrees (180°) of visibility. The primary light is attached to the front bumper to form the apex of the inverted triangle. In one embodiment optical fibers are used to present a forward facing display.

According to typical inventive practice, a cable is grasped by a Kellum grip and is positioned through the topside “V”-notch of an “M”-structure. Two wires engage pulleys and a ratchet distanced from the pulleys. The pulleys are joined with a grip plate, attached at an axial end of the Kellum grip. The ratchet is joined with a ratchet plate, proximate and / or attached to the “M”-structure. The “M”-structure has joined therewith three blade wheels having cutting orientations in the same linear direction. The blade wheels are situated interiorly and perpendicularly in correspondence to the geometric sides of the inverted triangle defined by the “V”-notch. Each blade wheel is adjustable to suit the diameter of the cable positioned through the “V”-notch. Ratcheting of the wires moves the ratchet plate and hence the “M”-structure, resulting in creation via the blade wheels of three parallel slices in the cable along its axis.

In a spot welder welding production line, phenomena, such as infirm welding, missed welding, and excessive welding, may usually arise from an immature welding process, thereby greatly affecting the service life and the attractive appearance of a product and requiring quality detection. In view of the low efficiency of a traditional detection method, the invention provides a welding spot defect detection system based on computer vision for detecting the welding spots by using machine vision and provides an image processing method. The method comprises smoothing an image; performing threshold segmentation on the image by using an Otsu method; performing inverted triangle range conversion on the obtained image, converting pixel information into grayscale information; accurately segmenting thewelding spot by using a watershed algorithm; and finally, calculating the features such as area to classify the welding spot defects. Experiments show that compared with traditional detection equipment, the system can detect a variety of welding spots in different arrangement and improves industrial production efficiency.

The invention relates to a belt transmission type continuously variable transmission mechanism, which belongs to the continuously variable transmission. In the technical scheme, the conical surface of the conical plate of an input / output belt pulley is provided with a plurality of curved surfaces which uniformly divide the conical surface of the conical plate along the circumstantial direction and form a wave type concave and convex shape, each concave curved surface or convex curved surface gradually shrinks along the radial direction to form an inverted triangle, and a mobile conical plate corresponds to the concave curved surfaces and the convex curved surfaces of a corresponding fixed conical plate; and a push type transmission belt is adopted to self-adaptively achieve the wave-shaped tight engagement along with the conical surface of the conical plate, thereby realizing the continuously variable transmission. The push type transmission belt and the conical plate of the belt pulley can not only transmit kinetic energy through friction, but also can increase the movement resistance so as to transmit the kinetic energy. Therefore, the invention reduces the component loss in friction transmission, and makes the power transmission more reliable.

The invention discloses an in-pipe prestressed steel-pipe truss composite simply-supported beam structure, which comprises a main beam framework and a bridge deck. The main beam framework is in a steel-pipe truss structure, and the bridge desk is in a concrete structure. The main beam framework comprises a lower chord and an upper chord, the upper chord is connected with the lower chord through a plurality of web tubes, each two adjacent web tubes and the upper chord or lower chord form a triangle, and the cross section of the main beam framework is in the shape of an inverted triangle. The lower chord is in an arc structure with the middle arched down, and the lateral side of the main beam framework is in a fish belly structure. A prestressed tendon is arranged in the lower chord. The in-pipe prestressed steel-pipe truss composite simply-supported beam structure is reasonable in stress, light in weight, convenient in construction, and applicable to single-span simply-supported bridges and multi-span simply supported bridges.

The invention discloses a time-delay multi-carriers modulation and demodulation method. The code element waveform structure is composed of H cosine wavelets, all wavelets have different time delays sequentially, and various wavelets are linearly superposed to form a non-orthogonal composite wave code element waveform; the wavelets are amplitude-variable basic wavelets, and the basic wavelets are standard cosine waves with amplitude at 1 constantly. Meanwhile, the basic wavelets of a transmission end are transmitted finishing basic wavelets with a trailing area 0 and a trailing area 1 added at two ends of the standard cosine waves, and a receiving end is partially balanced to obtain received finishing basic wavelets with trailing to form non-orthogonal composite waves. The modulation adopts three methods including (1) an equilateral-triangle equation set method formed by an equilateral-triangle coefficient matrix; (2) an inverted-triangle equation set method formed by an inverted-triangle coefficient matrix; (3) an optimization method. The time-delay multi-carriers modulation and demodulation method reserves the advantages of high efficiency of a time-frequency mixing multi-carriers modulation method and reduces complexity as well as error bit rate.

The invention discloses a method for locally repairing a bricked ladle working liner. The method comprises a step of slag line brick patch repair and a step of wall-wrapping brick patch repair. In the step of slag line brick patch repair, the damaged part is dismantled in the shape of an inverted triangle and then replaced by ladle bricks of the original material and shape after dismantling. In the step of wall-wrapping brick patch repair, the patch repair is performed by local transverse dismantling method in which a severely-damaged ladle brick and two bricks on the left and the right sides and concentric to the ladle brick are dismantled using a pneumatic pick, which are replaced by bricks of the original material and shape after dismantling. The method disclosed by the invention adopts the ladle bricks of the original material and shape, does not need much investment, prevents the whole ladle from being dismantled due to local severe damage, maintains the original service life of the ladle by means of patch repair, and reduces the cost of refractory material per ton steel. For a low-life ladle with a local damage, the whole ladle does not need to be out of service in advance or dismantled by means of patch repair, which can effectively reduce the labor intensity of workers, reduce the discharge of waste refractory materials and bring good environmental benefits.

The invention discloses a continuous rigid frame bridge based on a steel truss-concrete slab composite beam. The continuous rigid frame bridge comprises a bridge substructure and the steel truss-concrete slab composite beam supported by the bridge substructure. The steel truss-concrete slab composite beam comprises a steel truss and a concrete bridge deck which is laid over the steel truss. The steel truss comprises one or more steel truss units; each steel truss unit is an inverted-triangle truss girder, wherein the inverted-triangle truss girder is composed of two upper chords, a lower chord, a left line of diagonal web members and a right line of diagonal web members, each upper chord comprises a first horizontal steel plate and a plurality of first vertical perforated steel plates evenly laid on the first horizontal steel plate, an upper chord transverse connecting system connected between the two upper chords comprises a plurality of upper chord transverse connecting pieces, and each upper chord transverse connecting piece comprises a second horizontal steel plate and a plurality of second vertical perforated steel plates evenly laid on the second horizontal steel plate. The continuous rigid frame bridge is simple in structure, reasonable in design, convenient to construct, good in stress performance, good in using effect and capable of effectively solving various problems existing in an existing continuous rigid frame bridge.

The invention discloses a method for improving brightness of an LED chip. The method comprises the following steps of: utilizing the metallic organic chemical vapor phase deposition to grow a GaN semiconductor layer comprising an N-GaN layer, a quantum well and a P-GaN layer on a sapphire substrate; utilizing the ICP Etching or RIE to make partial N-GaN layer exposed; coating a metallic layer on the GaN semiconductor layer by vaporization and using the metallic layer as a mask film layer; adopting the laser scribing technique to scribe the formed chip unit down to the sapphire substrate; corroding the N-GaN layer on the side wall of a scribing way by using the metallic layer as the mask film, so that the N-GaN layer forms a structure of a gradually changed inverted triangle; removing the metallic layer; manufacturing a transparent electrode, an N / P electrode and an SiO2 passivation layer on the corroded chip unit; and grinding the back of the LED wafer for thinning, and breaking the LED wafer by a breaking machine to obtain the LED chip. The method has the advantages of changing transmission distance of light, increasing a probability of photons escaping from the chip, improving the light outputting efficiency of the LED chip and making the brightness of the LED chip improved by over 10 percent.

The invention discloses a display device and a display method thereof and belongs to the technical field of display. The display device comprises a pixel array and an optical grating; the pixel array comprises a plurality of rows of pixels; each pixel comprises at least two sub-pixels; each row of sub-pixels is composed of sub-pixels of at least three colors circularly arranged, and each row of sub-pixels comprises the same number of sub-pixels; the upper edges of the sub-pixels in each odd-number row are aligned to each other, and the upper edges of the sub-pixels in each even-number row are aligned to each other; each odd-number row of the sub-pixels and the even-number row of the sub-pixels are staggered longitudinally from each other by a preset length, and every two adjacent sub-pixels are different in color; the shading region of the optical grating is used for shielding partial region of the pixel array. According to the pixel array, one sub-pixel and the other two sub-pixels adjacent to the sub-pixel in the same row are formed into an inverted triangle structure; when images are displayed by use of the pixel array, one sub-pixel is capable of borrowing the adjacent sub-pixels and also can be borrowed by the adjacent sub-pixels, and therefore, the display resolution is greater than the physical resolution and the PPI of the display device is increased.

The invention discloses a detachable flexible floating breakwater unit body which comprises an upper grid framework and a lower grid framework which consist of a plurality of tessellated packings, wherein soft cables and wave absorbing bodies in different diameters are alternated; each intersection joint of the upper grid framework and the lower grid framework is connected with the upper ends and the lower ends of the soft cables respectively to form the breakwater unit body with oddly arranged longitudinal and transverse soft cables; the wave absorbing bodies are formed by inserting and connecting two identical semicylinders with central semicircle holes and handle plugholes, staggered longitudinally, transversely and vertically at intervals to form gaps, arranged in triangle and inverted-triangle shapes, and mounted on minor diameters of the soft cables in a sleeving manner; and retaining rings connected with an anchorage system are arranged at four corners of the lower grid framework. The unit body is wide in wave absorbing range, good in wave absorbing effect, small in wave force, and convenient to construct and maintain, has a good shield effect on a long wave and a short wave, and is applicable to a harbor engineering environment which is different in water depths and not suitable for construction of the traditional breakwater.

The invention relates to an injection needle with a threaded surface, which is applied to the field of disposable interventional medical apparatus in the process of clinical transfusion, sampling, puncturing, and the like. The injection needle is characterized in that the surface of the injection needle has a threaded surface with a threaded structure form, wherein a thread adopts an equidistant thread or a variable-distance thread, the depth (c) of a thread groove is 0.01-0.10mm, the width (a) of the thread groove is 0.02-0.50mm, and the thread distance (b) is greater than 1mm. The thread groove can be an inverted triangle, a circular arc, a rectangle, and the like. The threaded form is added on the surface of a needle tube for reducing the continuous friction resistance of the needle tube in the injecting and puncturing process and the stimulation effect of the needle tube to subcutaneous nerve endings in the puncturing process and realizing the pain relieving effect.

According to typical inventive practice, a cable is grasped by a Kellum grip and is positioned through the topside “V”-notch of an “M”-structure. Two wires engage pulleys and a ratchet distanced from the pulleys. The pulleys are joined with a grip plate, attached at an axial end of the Kellum grip. The ratchet is joined with a ratchet plate, proximate and / or attached to the “M”-structure. The “M”-structure has joined therewith three blade wheels having cutting orientations in the same linear direction. The blade wheels are situated interiorly and perpendicularly in correspondence to the geometric sides of the inverted triangle defined by the “V”-notch. Each blade wheel is adjustable to suit the diameter of the cable positioned through the “V”-notch. Ratcheting of the wires moves the ratchet plate and hence the “M”-structure, resulting in creation via the blade wheels of three parallel slices in the cable along its axis.

The invention relates to a method for preparing a nano structure on a surface of a (111) silicon wafer, belonging to the technical field of nano. The invention is characterized in that a monocrystalline silicon nano wall structure or nano horn structure of which the characteristic dimension is on a nano level is prepared on the surface of a (111) silicon wafer by utilizing the anisotropic wet-process corrosive characteristic of the silicon material, or a self-restricting oxidation technique is combined to further prepare a monocrystalline silicon nanowire structure of which the cross section is in an inverted triangle shape. The invention has the advantage of simple technique, only relates to conventional photoetching, anisotropic wet-process etching mask manufacturing, corroding and etching techniques, can implement large-scale manufacture, and is a convenient micro / nano integration technology. The nano structure manufactured by the method provided by the invention can be used for researching properties (including mechanical, thermal, electric and other properties) of a low-dimension monocrystalline silicon material structure, can be used as a functional structure component of a sensor, and has application prospects.

The invention relates to the engineering technology science, in particular to a design and application method of a hanging bracket special for movement of a steel rail in urban railway field operation. The hanging bracket special for movement of the steel rail comprises a chain block, a cross beam, a hanger rail trolley, landing leg stand columns and walking mechanisms, and is characterized in that the cross beam is arranged between the two landing leg stand columns and provided with the hanger rail trolley, and the bottoms of the two landing leg stand columns are each provided with one corresponding walking mechanism. The cross beam and landing legs are connected through guide sleeves, the supporting height of the parts, on the landing legs on the two sides, of the cross beam can be adjusted according to field conditions, and the construction need under the condition that a construction site is bumpy severely or steps exist can be met. A sealed wheel set assembly of conical roller bearings is adopted in design of the walking mechanisms, and therefore pushing at the construction field is facilitated, contamination can be avoided, and the hanging bracket can adapt to the severe construction environment. Three sets of rollers arranged in an inverted triangle manner are adopted in the hanger rail trolley so that the hanger rail trolley cannot fall off when moving on the cross beam, and safety can be guaranteed.

The invention provides a goods receiving and storing device, relating to transportation, receiving and storage of express logistics goods. A winding engine and a platform for fixing a conveyor belt are arranged at the top of a building, and an electronic tag identification device is arranged above the conveyor belt; a traction steel cable of the winding engine is fixedly connected with a hoisting ring at the top of a goods delivering box, guide rails between floors are arranged at both sides of the goods delivering box, the goods delivering box is provided with a push mechanism and a limit baffle of a box opening, the drive end of the push mechanism is provided with a motor, and a shaft of the motor is connected with a drive connecting rod of a parallelogram connecting rod through a key. The drive connecting rod and a driven connecting rod of the parallelogram connecting rod are mutually hinged to through two inverted triangle connecting blocks fixed at the connecting rod. A driving gear is fixedly connected with the drive connecting rod of the parallelogram connecting rod, a driven wheel is fixedly connected with the driven connecting rod of the parallelogram connecting rod, a push plate is fixedly connected with the front ends of the connecting blocks, the rear end of a triangle connecting block is provided with a wheel axle with an idler wheel, and the limit baffle is arranged at the box opening. The goods receiving and storing device is mainly used for receiving goods delivered by an unmanned aerial vehicle.

The invention provides a method for automatically dividing stratum gyration by earthquake information, which comprises the following steps of: firstly, carrying out the time frequency analysis on earthquake data on the basis of a high-order statistic theory to obtain the high-resolution time frequency analysis result of an earthquake channel; then, extracting a time frequency curve and an extremepoint thereof from a two-dimensional time frequency analysis result by a mathematic means; drawing a regular triangle for representing positive gyration or an inverted triangle for representing negative gyration on two-two extreme points; and finally, completing the automatic division of the stratum gyration by a computer. In the method for automatically dividing the stratum gyration by the earthquake information, which is provided by the invention, the automatic division of gyration can be carried out on different earthquake data; the efficiency and the objectivity of gyration division are improved; and the required gyration information can be rapidly provided for isochronal sedimentation interface identification and explanation.

The invention discloses a manhole cover disassembly and assembly device for municipal engineering. The manhole cover disassembly and assembly device comprises a base, wherein universal wheels are arranged at the four corners of the bottom of the base; a first left electric push rod and a first right electric push rod are fixedly arranged on the top of the base; the top push rods of the first electric push rods are fixedly connected to a lifting plate; a left supporting plate and a right supporting plate are fixedly arranged on the top of the lifting plate; a guide rail is fixedly connected between the left supporting plate and the right supporting plate; a left cover lifting plate and a right cover lifting plate are also arranged between the left supporting plate and the right supporting plate; the guide rail passes through the cover lifting plates and is connected to the cover lifting plates in a sliding manner; a threaded rod is also arranged between the left supporting plate and theright supporting plate; the right handed thread and left handed thread of the threaded rod respectively pass through the left cover lifting plate and the right cover lifting plate and are in threadedconnection with the left cover lifting plate and the right cover lifting plate; the bottom of each cover lifting plate is split into a left elastic plate and a right elastic plate from bottom to top;and the bottom of each elastic plate is fixedly connected to a cover lifting inverted triangle block. According to the manhole cover disassembly and assembly device, the electric push rods are controlled to shorten, so that the cover lifting inverted triangle blocks pass cover lifting holes, then the first push rods are controlled to elongate so as to lift a manhole cover; and the manhole cover does not need to be manually carried, and thus, the physical strength is saved.

A high-strength combined self-degrading expansion bone peg comprises a bone peg body (1) made of pure magnesium or magnesium alloy and an expansion internal-threaded cavity (2) located outside the bone peg body (1) and matching with the same. The surface of the middle of an inner surface taper of the expansion internal-threaded cavity (2) is provided with a high thread, the front of the inner surface taper is provided with a low thread, and the outer surface of the expansion internal-threaded cavity (2) is provided with a plurality of wedges (3) which are in trapezoidal or inverted triangle shapes and which have a 70-90 degrees angle with the outer surface. The bone peg body (1) is in the shape of a taper with a larger head; the surface of the middle of the outer surface of the bone peg body (1) is provided with a high thread, and the surface of the front of the outer surface of the bone peg body is provided with a low thread. A cap of the bone peg body (1) is provided with an internal triangular or linear slotted inner cavity (4) communicated with the bone peg body (1). When the high-strength combined self-degrading expansion bone peg is in use, the bone peg body (1) is disposed inside the expansion internal-threaded cavity (2). The high threads can be better joined with the expansion internal-threaded cavity, higher resistance and a longer path are provided for unscrewing the bone peg body, and slipping of the bone peg body is effectively avoided.

The invention discloses a chenille spinning machine for spinning chenille yarns. Firstly, knitting wools for spinning the chenille yarns wind an inverted triangle distance cutting sheet through a high-speed swiveling head, and the width of the neck portion of the distance cutting sheet depends on the length of pile yarns. Subsequently, a pressure roller is fed into a grey yarn rack, two core yarns are discharged, one of the core yarns forms a surface layer core yarn of the chenille yarns, and the other one of the core yarns forms a base layer core yarn of the chenille yarns. The knitting wools on the distance cutting sheet are pushed to blades through roller pieces, the blades move in the middle of the neck portion of the distance cutting sheet, and the knitting wools are cut by means of the blades. The cut knitting wools are sideward clamped between the surface layer core yarn and the base layer core yarn, and flaky knitting wools between the two core yarns are scattered towards all sides to form the chenille yarns through downward use of swiveling of reeling spindles. The chenille spinning machine has the advantages of being convenient to operate, high in production efficiency, large in reeling volume, safe, and reliable.

The invention discloses a subwavelength binary diffraction grating-based method for implementing a wavelength separator. The wavelength separator consists of three subwavelength binary diffraction gratings and a pure quartz glass flake, wherein one subwavelength binary transmission grating with a concave structure is made of SIyNx and arranged on the lower end face of the pure quartz flake; and the other two subwavelength binary reflection gratings with bow-shaped structures are made of gold or silver, arranged on the upper end face of the pure quartz flake, and positioned on the left and the right of the subwavelength binary transmission grating in equal distance respectively so as to form an inverted triangle with the subwavelength binary transmission grating. The subwavelength binary diffraction grating device required by the invention has the advantages of simple and mature manufacture process and low manufacture cost, and the principle and process of the whole wavelength separation are simple and practical and can be instantly applied practically to generate economical benefit.

The invention discloses an enhanced dephosphorization reactor. The reactor body comprises, from bottom to top, a water distribution zone, a reaction zone and a precipitation zone in sequence, wherein the lower part of the water distribution zone is equipped with a returned sludge hopper, a mixing chamber is arranged at the upper part of the returned sludge hopper and a jet water inflow device is arranged at the center of the returned sludge hopper; the reaction zone is equipped with, from inside to outside, a first reaction zone, a second reaction zone and a third reaction zone in sequence, and a chemical agent inflow pipe is located at the lower part of the first reaction zone; and the precipitation zone is equipped with, from bottom to top, a sludge discharge port, a precipitated sludge hopper, a sludge precipitation chamber, an overflow weir and a water outlet in sequence, and a saw-toothed overflow mouth is formed at the upper part of the overflow weir. The enhanced dephosphorization reactor combines thawing agglomeration dephosphorization, flocculation dephosphorization and crystallization dephosphorization, realizes the complementation of all functional units, has the advantages of compact structure and small occupation area; in addition, jet water inflow is adopted to enhance the mixing effect of wastewater and chemical agents, promote the reflux of the precipitated sludge for recovery and enhance dephosphorization effect; the solid-liquid separation effect is improved by the synergy of crystalline column layer filtration and inverted triangle sedimentation separation of the precipitation zone; and the precipitated sludge has high phosphorus content.

The invention provides a method and device for determining irrigation parameters of crops. At least one irrigation parameter is determined according to the root system depth and the root system characteristics of the crops. The method comprises the following steps: determining root system length of the crops as the irrigation depth; dividing a soil layer of the crops as at least one layer of irrigation layer according to the irrigation depth; for each layer of irrigation layer, determining a water content lower limit value of the soil; for each layer of irrigation layer, determining a moisturechange rate according to the water content lower limit value of the layer of soil and the actual water content of the layer of the soil; taking a mean value of the moisture change rate; and determining whether needs to irrigate the crops according to the mean value. By considering the distribution characteristics that the crop root system is an inverted triangle structure from big to small, the water content states and changes of the soil at different depths are monitored, the water resource is reasonably utilized when the maximum irrigation amount to the crop root area is effectively and reasonably controlled, and the energy source is saved.

The invention is a micro band antenna able to be applied to ultra wide band (UWB) high speed wireless communication system, comprising a printed circuit board (PCB) and a plane metal fixed on the PCB, where the plane metal comprises signal metal and ground metal, characterized in that the ground metal comprises at least two pieces, composing a í‹ground-signal-groundíŒ coplanar wave guide structure together with the signal metal, and the signal metal and ground metal can be on the same side of the PCB and also on different sides of the PCB; and the signal metal is a cup or the deformation of a cup in shape, comprising a handle and a cup body, where the lower part of the cup body is similarly an inverted triangle or trapezoid in shape. And the antenna has the characters of low cost, being easy to manufacture, small bulk and high performance.

The invention discloses a hoisting mechanism with distributed arrangement of a container crane and an arrangement method of the hoisting mechanism. The hoisting mechanism comprises a portal assembly, a travelling trolley, a hoisting mechanism body and a lifting appliance; the hoisting mechanism body comprises hoisting and winding gears, a dragging type fixed pulley trolley and a dragging type travelling winding gear; the hoisting and winding gears are distributed at the lower end of the portal assembly; the dragging type travelling winding gear is arranged above a main beam; and the dragging type fixed pulley trolley is correspondingly dragged by the dragging type travelling winding gear. According to the invention, all the hoisting and winding gears are correspondingly distributed at four corners of the portal assembly, and down-shift of the gravity center of the whole mechanism is realized by the position distribution of the hoisting and winding gears, thus reducing the load weight of the structure at the upper part, and realizing lightweight structure of the container portal crane; and due to reasonable arrangement, the hoisting mechanism forms multiple inverted triangles along the direction of the main beam and the direction vertical to the main beam, and due to arrangement of triangles in multiple directions, and in match with a damping pulley, the purpose of shaking prevention of all directions is realized.