101results about How to "Easy to operate in the field" patented technology

The invention disclose a new positioning method of a distribution network single-phase earth fault, which is applicable to a 3-60 kV neutral point ineffective earth grid. The principle of the positioning method is that: firstly, a high-voltage DC signal is poured into a circuit starting end and the DC signal is detected along the circuit so as to determine a fault area; then a high-voltage AC signal is poured into the circuit starting end, and the AC signal is detected along the circuit so as to determine the position of a fault point. A positioning device developed on the basis of the invention consists of two parts: a high-voltage signal source and a signal detector, wherein, the high-voltage signal source consists of a voltage inverter, a constant flow source, a transformer and a rectifier bridge and is used for pouring a high-voltage DC signal and a high-voltage AC signal; the signal detector comprises a DC detector and an AC detector, wherein, the DC detector consists of a Hall DC detector, a Bluetooth wireless sender and a Bluetooth wireless receiver and is used for measuring the DC signal; while the AC detector consists of an AC electromagnetic field inductor and a signal processing and display segment and is used for measuring the AC signal. The method and the device have mature technique and high reliability.

The invention discloses a method for reshaping pear trees, relating to a method for reshaping fruit trees and comprising the following steps: (1) determining reasonable plantation density, wherein appropriately, the line spacing is 4m and the row spacing is 5-6m; (2) formulating an overall objective for culturing tree shapes, controlling the trunk height of a pear tree to be 0.7-0.8m and the distance away from the ground to be 0.8m, allocating two boughs along a progressive direction, and inducing horizontally; and allocating lateral branches at the two sides of the boughs, performing line spacing inducement through a mode for forming a dip angle of 45 degrees with the horizontal plane, and controlling the spacing between lateral branches to be 0.4-0.5m; (3) realizing tree shape culture by the steps of bough culturing and inducing, and reasonable allocating and trimming of lateral branches; and (4) constructing a framework adaptive to labor-saving reshaping, wherein the pear trees are V-shaped and U-shaped. The invention has the advantages as follows: (1) the reshaping technology has simple requirements and rapid speed; (2) the field operation is easy and has high efficiency; (3) the expansion of operation to an appropriate scale per capita is possible; and (4) the early-stage yielding ability is good.

The invention relates to an air gun array earthquake source three-dimensional space combination method for offshore earthquake exploration. The method comprises the steps of determining the total capacity of an air gun array earthquake source, and the number of subarraies, determining the capacity of each subarray and the capacity of each subarray unit in each subarray, determining the relative positions of large capacity air guns and small capacity air guns, determining the positions of all the subarraies in an air gun array, determining the optimal immersing depth of the air gun array, selecting air gun array plane arrangement parameters corresponding to simulating wavelets meeting exploration requirements, determining the optimal three-dimensional space combination mode of the air gun array and related parameters of the immersing depth of upper sources and the lower sources and the like, so that a delayed simulating three-dimensional space combination stereoscopic air gun array earthquake source can be obtained, and the delayed simulating three-dimensional space combination stereoscopic air gun array earthquake source is final air gun earthquake source three-dimensional space combination for offshore earthquake exploration. The air gun combination arrangement mode designed through the air gun array earthquake source three-dimensional space combination method is distinct in gradation, the optimal air gun combination arrangement mode is provided for different construction conditions and different offshore exploration environments, and therefore optimal far field wavelets in the current environment can be obtained. The air gun array earthquake source three-dimensional space combination method for the offshore earthquake exploration can be directly used in the outdoor offshore earthquake exploration process.

The invention relates to an underground gas storage well wall automation comprehensive detection system and a detection method. The system comprises an upper computer, a position measuring device, a cable lifting device, a direct current power supply and an underground movable detector, wherein the upper computer is placed on a well, and the movable detector is communicated with a device on the well through an armor cable and obtains power. Occupied space of the cable is saved, field operation is convenient, a wall thickness corrosion probe group and a flaw detection probe group are arranged inside the movable detector, detection for the wall thickness corrosion and flaws can be achieved simultaneously, and detection for the gas storage well is complete. Meanwhile, an underground device of the system integrates encouraging, receiving, amplification and signal processing and transmission functions, therefore ultrasonic signals does not need to be transmitted to the ground to be processed for a long distance, fidelity and the signal to noise ratio of the signals are greatly improved, and detection results are accurate.

The invention relates to an electric power circuit fault detect device and detecting method, in particular to a power transmission and transformation system fault searching locating instrument and a searching method. The locating instrument comprises a host, a host accessory and a monitor. The host and the monitor are connected through the host accessory. In a test, a signal source outputs high-voltage signals to an electric power circuit grounding phase to break down a grounding point, and the grounding point is maintained in a grounding state through constant currents. The currents flow along the grounding phase of a grounding circuit and enter the ground through the grounding point, and a closed loop is formed with the ground. The signal monitor tracks the signal currents of the grounding circuit. Several important points are measured along the circuit with a bipartition method, and by detecting changing of the injected signals, the accurate positions of a grounding branch and the grounding points can be determined smoothly. The power transmission and transformation system fault searching locating instrument and the searching method have the advantages the positions of fault points can be accurately determined, rod ascending checking rod by rod is of no need, working efficiency is improved, and labor intensity is lowered.

The invention discloses a new method for surveying population density of microarthropods such as panonychus citri mcgregor, predatory mites and diaphorina citri kuwayama. The new method comprises the following steps of: randomly drawing a citrus sample plant; placing adhesive plate boxes below tree crowns in the east, south, west and north directions of the tree crown of the citrus sample plant; knocking branches of the tree crowns above the positions where the adhesive plate boxes are arranged for many times to drop the microarthropods; adhering the microarthropods falling in the adhesive plate boxes to adhesive plates of the adhesive plate boxes; collecting the adhesive plate boxes to perform statistical survey, wherein the adhesive plate boxes comprise box bodies; a layer of plate corresponding to the size of the bottom surface is arranged on the bottom surface of each box body; an adhesive material is coated on the upper surface of the plate; and thus, the adhesive plates are constructed. Thus, by surveying with the method provided by the invention, the used time is less, the sample can be stored for a long time, and most importantly, the detection sensitivity to the microarthropods of red spiders, predatory mites and the like is greatly improved; and since the detected objects are adhered and cannot escape, the detection is more convenient, simpler and more accurate.

The invention discloses a crystal grape slope TU shape pruning technology. Seedlings in the current year are planted, and short seedling segments are reserved. After sprouting, two young sprouts are selected and remained; after the two sprouts grow up, one strong branch serves as the main vine and is guided to spread onto a trellis through an inserted rod in a stretched mode, the weak branch is removed, pinching is carried out on the main vine after the main vine grows up to form a trunk, two accessory buds are cultivated on two upper knots and used as main branches after pinching, the other accessory buds are removed, and grape tendrils are removed too. The two main branches grow towards the two sides in the horizontal direction of a slope, then are guided upwards along the slope in the direction perpendicular to the horizontal line of the slope, are subjected to binding cultivation, and then are subjected to pinching. Secondary accessory buds growing at knot axils of the main branches are all reserved, leaf remaining and pinching are carried out on all the secondary accessory buds, and the secondary accessory buds are bound. Crystal grape branches and tendrils in a mountainous region do not overlap or overlap slightly after pruning, the steps of pruning, branch binding, pinching, bud removing, bagging, picking and the like are simple and fast, labor and time are saved, tree vigor is strong, the tree form is stable and standard, fruit clusters are large and orderly, products are high in commodity, and the yield is easy to control.

The invention relates to a method for planting cured tobacco in a hot area from May to September, belonging to the technical field of agriculture. The invention not only develops the technology, but also cooperates with a reasonable cultivation mode for cultivation, thereby effectively solving the problem of insufficient temperature in winter planting technology. The method for planting cured tobacco in a hot area from May to September is used for researching planting altitude, planting density, seedling raising modes, nitrogen application amount, antifreezing measures, irrigation regime, and the number of days for reserving tobacco, thereby solving the technical problems of land area shortage, and confliction between the hot-area cured tobacco planting technology from May to September and the climate from October to next April. Meanwhile, the cured tobacco is planted below the film instead of above the film, and idle soil in winter is utilized to develop the method for planting cured tobacco in a hot area from May to September, thereby increasing the land-use ratio and enhancing the economic benefit of farmers. The method for planting cured tobacco in a hot area from May to September has the advantages of less investment, high effect taking speed, high yield, high efficiency and the like, and can be used for large-scale production.

The invention discloses a method and kit for utilizing a Mo-Sb antiluminosity method to detect a content of orthophosphate in water. The method comprises blending ammonium molybdate, antimony potassium tartrate and ascorbic acid to make a color developing agent, adding the color developing agent into a to-be-measured water sample to blend the color developing agent, then adding benzene sulfonic acid to enable the pH to be 0-1, fully blending and standing for over 3min, utilizing a spectrophotometer to measure the absorbance at the position of 880nm, and obtaining the content of orthophosphate in the to-be-measured water sample through an absorbance value according to a pre-measured standard curve. According to the method, by improving a strong acid medium, operation in measuring orthophosphate in the Mo-Sb antiluminosity method is simplified, danger is lowered, the detection speed is improved, and field operation is facilitated.

Disclosed is an automatic radio environment test platform based on Labview and a third-party driving program. The platform is respectively composed of three parts, i.e., an antenna control rotary table, a total control computer and a frequency spectrograph, wherein the total control computer is respectively connected with an antenna rotation platform and the frequency spectrograph. A control program integrated in the total control computer comprises two sub-modules, i.e., a real-time antenna rotation platform control sub-module and a frequency spectrograph control sub-module, wherein the real-time antenna rotation platform control module issues a current orientation and a pitch value through a serial port to the antenna rotary table, and the frequency spectrograph control module connects the total control computer with the frequency spectrograph through a network line and has the functions of arranging observation parameters controlling the frequency spectrograph and reading observation data. The automatic radio environment test platform provided by the invention has the advantage of operation visualization, convenient data recording, simple operation and easy field operation.

The invention discloses an in-situ scanning device. The in-situ scanning device comprises a scanning device body and a connecting rod, wherein the scanning device body comprises a guide part and a scanning part. The in-situ scanning device also comprises a control system which is arranged in the in-situ scanning device body, wherein the control system comprises a central processing unit and a motor driving module; the central processing unit is used for data processing in the control system and control of each component; the motor driving module is used for driving a motor in a rotation speed corresponding to a required resolution. Moreover the control system also comprises a linear array sensitive sensor, linear array data cache, area array data catch, and a time sequence control module. According to the in-situ scanning device, pattern data of cylindrical inner walls of various objects to be measured can be continuously acquired, is subjected to primary processing and storage and is subjected to data exchange with other terminals, so that in-situ scanning measurement for a plant root system in soil under a field environment is realized; the in-situ scanning device can also be used for researching mire, rock, soil, geology and the like.

The present invention discloses a metro shield tunnel forming tunnel portal measurement method, which comprises: 1, field data acquisition: 101, selecting measurement points, wherein M measurement points are selected on the inner edge of the tunnel portal to be measured according to requirements, and 102, measuring the measurement point position, wherein three-dimensional coordinates of each measurement point are measured, and measurement results are recorded; and 2, indoor data processing: 201, calculating the distance between each measurement point and the center line of the design path, and comparing the difference value, 202, calculating the end wall offset and the flatness, and 203, comparing the fitting tunnel portal center and the designed tunnel portal center, wherein the process comprises projecting, projection point grouping, circle fitting, fitting tunnel portal center point acquiring, tunnel portal center fitting precision calculating, and tunnel portal center offset acquiring. The metro shield tunnel forming tunnel portal measurement method has characteristics of simple step, reasonable design, easy achieving and good use result, and problems of high labor intensity, probable forming tunnel portal plane deviation calculating, and poor use effect of the existing tunnel forming tunnel portal measurement method can be solved with the metro shield tunnel forming tunnel portal measurement method of the present invention.

The invention discloses a transient electromagnetic data acquisition system and method based on a wireless sensor network. The system comprises terminal acquisition nodes, router nodes and a gateway node, wherein a wireless sensor network is formed among the three nodes; the gateway node is connected with an industrial personal computer and receives an instruction of the industrial personal computer and transmits a data acquisition instruction to the terminal acquisition nodes through the wireless sensor network; the terminal acquisition nodes acquire transient electromagnetic data in monitoring areas according to the data acquisition instruction, converts the transient electromagnetic data into digital signals and transmits the digital signals to the gateway node in a data packet form through the wireless sensor network. The distributed transient electromagnetic data acquisition system based on the wireless sensor network has high surveying accuracy, a connecting line between each two nodes is omitted, field operation is convenient, the working efficiency is improved, and the nodes adopt a modular design and are convenient to maintain and replace.

The invention discloses a method for utilizing an angle gauge to measure forest stand crown density and belongs to forest resource survey methods. The method is characterized in that the angle gauge serves as a tool, by adopting an angle gauge counting survey method and measuring a diameter at breast height of each counted tree, diameter class distribution per hectare is obtained, the plant number of each diameter class per hectare in a forest stand can be calculated, corresponding crown breadth values of trees of each diameter class are found out according to an established unary diameter crown table, and the forest stand crown density of a surveyed area can be obtained through a crown density principle. The advantages that the angle gauge is light, convenient, flexible and low in cost are fully utilized, cost of field survey is reduced, and efficiency of office work treatment and field operation of the forest stand crown density is improved. By establishing the unary diameter crown table taking various crown breadth influence factors into account, calculating precision of the forest stand crown density is greatly improved, and the shortcomings that in previous forest stand crown density survey, the precision is low if methods are simple, and the process is complex if the precision is high are overcome.

The invention discloses an umbrella opening type quick release nose cone for a small / medium-sized unmanned airship. The nose cone comprises a cone cap, a pipe joint and multiple support rods, wherein a nose cone mooring hole is formed in the front section of the pipe joint, a tying hole is formed in the middle, and two circles of connecting rings with different declination angles are arranged at the rear part; each of a front cone cap and a rear cone cap is a head-hollowed conical structure machined by adopting a metal sheet, the inner ends of the front and rear cone caps are fixedly connected with the two circles of connecting rings at the rear part of the pipe joint through rivets respectively, and the outer ends of the front and rear cone caps are riveted and formed through rivets; the multiple support rods are bent into an umbrella structure fitting the outer contour of the head of an airbag of the airship, the rear ends of the support rods are detachably and fixedly connected with an airbag body of the airship, and the front ends of the support rods are detachably and fixedly connected with a fixing device on the outer wall surface of the cone cap. Compared with an existing nose cone structure, the nose cone has the advantages of light weight, simple structure, convenience and easiness for disassembling and convenience for outfield operation; the number of the support rods is regulated according to the magnitude of a load to bear force in multiple directions and achieve high adaptability.

The invention relates to an evaluation screening method and an evaluation operating process for chlorine-containing disinfectants. The evaluation screening method for chlorine-containing disinfectants comprises the following steps of: adding potassium iodide into a chlorine-containing disinfectant to be determined, so that the potassium iodide is oxidized and iodine is separated out; through taking starch as an indicator, carrying out titration by using a standard sodium thiosulfate solution; and calculating the initial chloride equivalent according to the consumption of the standard sodium thiosulfate solution. In the process of determining, the potassium iodide is directly added into the chlorine-containing disinfectant to be determined, so that the potassium iodide is oxidized and iodine is separated out, and the potassium iodide is not oxidized under the condition of adding an acid into the disinfectant. The operating process of implementing the evaluation method comprises the steps of adding a plurality of KI powder into a quantitative disinfectant to be determined, carrying out titration by using standard sodium thiosulfate, and calculating the initial chloride equivalent according to the consumption of the standard sodium thiosulfate. By using the evaluation screening method and operating process disclosed by the invention, the initial chloride equivalent of a disinfectant can be rapidly determined. The stability and storage capacity of a disinfectant and the initial reaction capacity (closely relevant to a spray disinfection method) of the disinfectant are evaluated by using the chlorine equivalent, thereby solving the problem of evaluation index distortion caused by separately using available chlorine.

The invention discloses a measuring and reading device for a water and soil erosion survey pin. The measuring and reading device comprises a movable outer barrel and a guide inner barrel arranged inside, which are in sliding connection, wherein a limiting top cap is arranged above the top end of the guide inner barrel; a back cover is arranged at the bottom end of the guide inner barrel; the guide inner barrel and the movable outer barrel are equal in length; scales are formed in the guide inner barrel; the outer diameter of the guide inner barrel is greater than the outer diameter of the survey cap. The invention further discloses a using method for the measuring and reading device for the water and soil erosion survey pin. The measuring and reading device has the characteristics of being operated outdoors, capable of avoiding artificial interferences, accurate in reading, simple in structure, easy to grasp, low in using cost, reliable in performance, and the like. Compared with the conventional survey pin with the scales, the measuring and reading device can be used for overcoming the defects that the scales on the survey pin are easy to peel off, the rust corrosion is polluted, the reading is difficult, the efficiency is low, the requirements for the survey pin processing process are high, the cost is high, and the like.

The invention provides a microfluidic paper chip, which comprises a sample introduction area and a detection area, wherein the sample introduction area and the detection area are hydrophilic areas, and the periphery of the sample introduction area and the detection area is a hydrophobic area; the sample introduction area is positioned on one side of the paper chip, and the detection area is positioned on the other side; and the sample introduction area can penetrate through the paper base to penetrate through the other side of the paper chip to form a filtrate area, and the filtrate area enables filtrate to flow to the detection area in a contact mode or a non-contact mode. The invention further discloses a method for preparing the microfluidic paper chip and a detection system based on the microfluidic paper chip, and the system is applied to detection of components of food, vegetables, traditional Chinese medicinal materials and blood samples. The paper chip disclosed by the invention is simple and convenient to use, low in cost and more suitable for detecting substances with relatively small sample quantity. When a sample injection solution is ionized and sprayed, a signal entering a mass spectrometer is stronger, and the detection precision is higher. During detection operation, pollution can be prevented, the accuracy of detection data is ensured, and the mass spectrometer is prevented from being damaged.

The invention relates to a wireless synchronous collecting system which comprises a center node and at least one node. The center node comprises a PC host and a wireless transceiver, and wireless collectors serve as the nodes. The PC host sends sent orders to the wireless transceiver through a USB interface, the wireless transceiver converts the orders into frequency modulation carrier waves and transmits the frequency modulation carrier waves out, and after frequency modulation signals received by the wireless transceiver are demodulated into serial codes, the serial codes are sent back to the PC host through the USB interface; the wireless collectors receive synchronous triggering orders sent by the wireless transceiver, collect data of sensors arranged on a bridge at the same time, process and store the data, receive data calling orders of the center node and then conduct data transmission. Wireless control and wireless real-time transmission are conducted, the collecting precision is high, errors of real-time collection and transmission due to interference are avoided, the defect that a large amount of cables are laid, and consequently the workload is large is overcome, an internal power source and an external power source can be selected for power supply, field operation is convenient, and the wireless synchronous collecting system is an ideal wireless measuring tool.

The invention relates to the technical field of saline-alkali soil ecological treatment, in particular to a method for establishing reed vegetation on heavy soda saline-alkali soil. The method aims to solve the problem that in an existing heavy soda saline-alkali soil vegetation planting process, the alkalization degree is high, soil hardening is firm, and tillage is difficult, accordingly survival of plants is extremely difficult, and vegetation coverage cannot be formed. The method comprises the first step of pool ridge construction, the second step of reed provenance obtaining, the third step of plant hole drilling, the fourth step of reed stem section planting and the fifth step of growth period management. The method has the advantages that the purposes of improving the soil and restoring vegetation are achieved; field operation is convenient, the survival rate is high, and the reed coverage rate in the second year reaches 70%. The method is mainly used for establishing the reed vegetation on the heavy soda saline-alkali soil.

The invention provides a method for measuring and calculating the total leaf area of a whole arbor. The method comprises the following steps: step 1, establishing a canopy model; step 2, collecting external and internal leaves of the target canopy; step 3, measuring crown related parameters through laser ranging; step 4, acquiring a leaf scanning image and standardizing the image; step 5, calculating the leaf area of a sampling point through image processing; step 6, calculating the average leaf density of the outer layer and the inner layer of the crown; and step 7, calculating the total leafarea of the whole plant. According to the method, the leaf area is calculated by adopting Matlab computer image processing, the leaf area of a large number of samples can be quickly calculated, a laser ranging method is adopted, field operation is facilitated, the problem that the leaf area of the whole arbor cannot be effectively and quickly obtained in ground measurement is solved, and then thewhole arbor organism can be obtained through ground measurement.

The invention discloses an outdoor shaft sleeve pulling and pressing device for excavators and belongs to the field of machinery manufacturing. The outdoor shaft sleeve pulling and pressing device comprises a power assembly (3), a support part (4) and a sleeve part (5). A shaft sleeve (1) is arranged in the shaft hole of a shaft (2). The power assembly (3) comprises a power mechanism (6), a cylinder (7) and a piston rod (8). The power mechanism (6) drives the piston rod (8) to extend out or retract into the cylinder (7). The support part (4) is connected with the cylinder (7), and the sleeve part (5) is connected with the other end of the piston rod (8). A first acting plane (9) acting with the shaft (2) is arranged on the support part (4), while a second acting plane (10) acting with the shaft sleeve (1) is arranged on the sleeve part (5). When the piston rod (8) extends out or retracts into the cylinder (7), the direction of force that the first acting plane (9) applies upon the shaft (2) is opposite to that the second acting plane (10) applies upon the shaft sleeve (1). By the arrangement that the shaft sleeve is pressed out by exerting force upon the cylinder and the piston rod in the opposite direction, greater convenience is brought to outdoor operation, with no need for carrying larger power sources, thus the outdoor shaft sleeve pulling and pressing device can save both time and labor, and damage to the shaft hole is less.

The invention discloses a frequency domain electromagnetic exploration method for acquiring resistivity based on a horizontal electric field and a magnetic field. The method comprises the following steps of S1, arranging an observation device, wherein the observation device comprises a transmitter, two power supply electrodes A and B, a measuring point provided with a measuring electrode, and a receiver capable of simultaneously observing the electric field and the magnetic field; S2, enabling the observation device to work normally, receiving an electromagnetic response signal fed back by the measuring point by the measuring equipment, and sending the electromagnetic response signal to a processing device; and S3, the processing device calculating apparent resistivity of different frequencies of the position where the measuring point is located according to the electromagnetic response signal, and the stratum information being obtained through qualitative analysis and quantitative calculation. As the method has no orientation limitation on an electric field and a magnetic field, wide-azimuth electromagnetic ground detection can be realized, and field construction efficiency is greatly improved; and secondly, the apparent resistivity is strictly defined based on an electric field and magnetic field component formula, so the geoelectric information can be accurately reflected, and the influence of the field source emission efficiency on electromagnetic sounding can be eliminated.

The invention discloses a stamen killing device and method based on temperature sensitivity of wheat and rice pollen. The device comprises a casing, wherein a temperature control device, a fan-type heating device and a stamen killing tank for accommodating a wheat ear or rice ear are mounted in the casing from left to right; a left side plate of the stamen killing tank is a seal plate, a plurality of heat circulation channels are evenly distributed on a top plate and a bottom plate, a temperature sensor is further mounted in the stamen killing tank and connected with an input end of a temperature control device, and an output end of the temperature control device is connected with the fan-type heating device; a water spray door gap is reserved in a top door cover of the casing. The device is easy to operate and convenient to carry and kills stamens thoroughly, and the temperature is controlled accurately; temperature control accuracy plays a critical role in stamen killing effect of wheat and rice, stamen killing is not affected by weather, time and places and is time-saving, efficient and thorough, and stamen killing efficiency and accuracy of hybrid wheat and rice are improved.

The invention provides a cultivation method for preventing the gas burning disease of grapes. The aim of increasing the leaf-fruit ratio of a tree body is achieved by processing young sprouts and auxiliary sprouts before the flowering period, the root environment is improved by covering black mulching film in real time after the flowering period, fruit faces are continuously sprayed with 0.2%-0.3% CaSO4 two to three times in the young fruit period to increase the tenacity of fruit peels, and the tree body is sprayed with 0.1% 1000-2000-fold abscisic acid, 0.2%-0.3%KH2PO4 and 0.5%aspirin before the fruits are sleeved with bags to strength the resistance of the tree body. A series of cultivation regulation measures are taken, so that nutrition distribution of the tree body and the external environment are improved, the stress resistance of the tree body is strengthened, and the fundamental aim of preventing the gas burning disease of the grapes is finally achieved.

The invention discloses a character collecting method and system, and relates to the technical field of character collecting of crops. The method comprises the following steps that C1, images of corps to be collected are obtained and preprocessed; C2, the images after preprocessing are subjected to edge detection to obtain binary edge images; C3, all edge images are subjected to linear detection to obtain straight lines along the edges of branches of the crops to be collected; C4, the straight lines are subjected to fitting to obtain straight slopes representing two branches of the crops to be collected, and C5, according to the straight slopes of the two branches, branch angles of the crops to be collected are calculated. According to the character collecting method and system, partial characters are automatically collected, and accuracy of character collecting is improved.

The invention provides a foliar fertilizer for preventing and controlling heavy metals in rice as well as a preparation method and a use method of the foliar fertilizer. The foliar fertilizer is composed of a main control component, a synergistic component, a surfactant, a penetrating agent, an adsorbent and nutritional components. Through reasonable matching of the raw materials, the effect of better reducing the content of heavy metals is achieved on the premise of ensuring the absorption rate of leaf surfaces.

The invention belongs to the field of protective clothes and particularly provides a safe and comfortable anti-bee suit. The safe and comfortable anti-bee suit comprises a cap, a jacket, trousers and shoes, wherein a zipper is arranged on the jacket, a convex meshed face mask is arranged at the front part of the cap, a transparent protecting piece is arranged at the upper part of the outside of the face mask, and two ends of the protecting piece are detachably connected with the cap through Velcro straps or buckles; a stop piece is arranged at the lower part of the inner side of the face mask, and a gap is reserved between the stop piece and the convex surface of the mask; when projected to the same vertical surface, the protecting piece and the stop piece partially coincide. Through matching of the convex meshed face mask, the protecting piece and the stop piece, urine sprayed by wasps can be effectively prevented, the breathability of the head part of the anti-bee suit can be guaranteed, and the anti-bee suit is safe and comfortable.

The invention discloses a method for photography positioning by UAV rotary / highland / roof common digital cameras cooperated with GPS / RTK / CORS. According to the method, according to different photogrammetry conditions of UAV rotary / highland / roof and the like, by means of GPS / RTK / CORS, high intervisible points S1 and S2 are selected as camera sites, three-dimensional object space coordinates (Xs1, Ys1, Zs1) and (Xs2, Ys2, Zs2) of the two camera sites can be determined, three-dimensional coordinates of image control points can also be determined, two or more control points in each camera photographic image can be ensured, by cooperation of object space coordinates of the two or more control points in a photographing area, three Euler angles Phi, Omega and Kappa corresponding to the photographic image can be obtained by resection and least squares method, and finally, by use of a stereo image pair formed by photogrammetry, three-dimensional object space coordinates (X, Y, Z) of any image point in the photographing area are obtained, and any coordinate point in the photographing area can be positioned.