222results about How to "Improve adjustment accuracy" patented technology

The invention relates to a satellite remote sensing image large-area seamless orthographic image manufacturing method. The method comprises the following steps: 1) constructing a remote sensing imageimaging geometric model; 2) reading a to-be-matched remote sensing image and DEM data, and matching the DEM data with the to-be-registered remote sensing image data; 3) carrying out remote sensing image ortho-rectification to obtain a corresponding DOM product; 4) according to the position relation between the orthographic images obtained in the step 3), determining an overlapping region between the images, performing matching in the overlapping region to obtain homonymous points, establishing an error equation based on a TPS model for each group of homonymous points, and performing iterativesolution to obtain a correction amount of geometric deviation between the images; And 5) carrying out dodging and inlaying on all the corrected ortho-images to obtain large-area ortho-image map products, and introducing a thin plate spline model in the ortho-image adjustment process to solve the problem of low precision of a traditional geometric correction model caused by a small overlapping range between the images.

The invention discloses a photographic parameter adjusting method, a mobile terminal and a computer-readable storage medium; the method comprises: switching a working mode of the mobile terminal to awearable mode based on a bending operation for a flexible screen, and dividing the flexible screen into a display area and a touch area according to bending data of the bending operation; if it is detected that a current interface of the display area is a photographic interface, monitoring whether a touch operation occurs in the touch area; if yes, adjusting photographic parameters according to aphotographic parameter adjusting command corresponding to the touch operation. The photographic parameter adjusting method, the mobile terminal and the computer-readable storage medium can provide effectively improved utilization rate of the flexible screen and greatly improved adjusting accuracy for photographic parameters.

The invention discloses a display support. The display support comprises an angle-adjustable support body and a display hanging plate component (5). A joint (13) is connected on the support body. The display hanging plate component (5) comprises a hanging plate (11), a connector (31) and a connecting block (12), the hanging plate (11) is rotationally connected with the connector (31), one end of the connecting block (12) is rotationally connected with the joint (13), the other end of the connecting block (12) is provided with a shaft hole (19), a rotary shaft (23) is in close fit in the shaft hole (19), a one-way bearing (27) is connected on the rotary shaft (23), an outer circle of the one-way bearing (27) is in close fit with the inner wall of the shaft hole (19), and two ends of the rotary shaft (23) are fixedly connected with the connector (31). The display support is capable of protecting the hanging plate from downward inclining due to dead weight of a display and the angle of the hanging plate is laborsaving and convenient to adjust.

The invention discloses a flow regulating device comprising a case and a regulating piece, wherein a water channel is arranged in the case and is a stepped hole, the stepped hole is provided with a step plane which is fixedly provided with a plurality of bulged bases thereon, and an interval is formed between two adjacent bulged bases. The regulating piece is made of an elastic material and can carry out elastic deformation under stress; the regulating piece is installed in the case and is arranged on the bulged base; spaces above the step plane, below the regulating piece and between two adjacent bulged bases form the water passing port of the water channel; and the elastic deformation of the regulating piece is regulated to press parts of the regulating piece into the water passing port so as to change the water passing section area of the water passing port. The invention has the advantages that the regulating piece is arranged above the bulged base, and the bottom surface of the regulating piece, which corresponds to the water passing port, has no support; the direction of the elastic deformation of the regulating piece is the same with flow direction, so that the regulating piece has big elastic deformation, wide water amount regulating range, high sensitivity for the elastic deformation aiming at pressure change and high regulating veracity.

The invention relates to an elevator starting compensation control method. An elevator comprises an elevator controller, a weighing module and a location detecting module, wherein the weighing module and the location detecting module are electrically connected with the elevator controller. The elevator starting compensation control method includes steps of recording weight of the elevator with no load or full load at first, recording pulses fed back by the location detecting module of the elevator ascending with no load or full load and descending with no load or full load within a sampling period T when the elevator is started, calculating compensation torque in each state according to the pulses, calculating compensation torque under other loads, constituting calculated compensation torques into a compensation torque sequence, and adaptively adjusting the compensation torque sequence according to detected practical conditions. By the elevator starting compensation control method, the elevator can be prevented from slipping when started, and riding comfortability is improved. In addition, by the elevator starting compensation control method which is adaptive, adjustment accuracy is high, judgment by human experience is not needed during the elevator is debugged, and debugging efficiency is high.

The invention discloses an information processing method, which is used for improving authenticity of the obtained information. The method comprises the following steps: acquiring a first value of a first parameter by a first sensor; acquiring a second value of the first parameter by a second sensor; judging whether the difference between the first value and the second value is larger than or equal to a first threshold value, and obtaining a first judgment result; when the first judgment result indicates that the difference is larger than or equal to the first threshold value, determining a third value of the first parameter based on a first algorithm, the first value and the second value, and regarding the third value as the value of the first parameter to be reported to a processing unit; when the first judgment result indicates that the difference is smaller than the first threshold value, determining a fourth value of the first parameter based on the second algorithm, the first value and the second value, and regarding the fourth value as the value of the first parameter to be reported to the processing unit. The invention further discloses electronic equipment for implementing the method.

The embodiment of the invention discloses a brightness calibration method and device, a storage medium and a terminal. The method comprises the steps of acquiring a current brightness value detected by a current light sensor; determining a backlight level corresponding to the current brightness value from a brightness storage set based on the current brightness value, wherein the brightness storage set comprises the brightness value detected by the brightness sensor and the backlight level corresponding to the brightness value; determining a light leakage brightness value of a backlight sourceaccording to the backlight level and the maximum light leakage value of the light sensor; and determining the actual brightness value of the current ambient light based on the current brightness value and the light leakage brightness value. According to the embodiment, the influence of light leakage of the backlight source of the display screen on reading of the light sensor is compensated and corrected through an algorithm; the effect of correcting the light sensor is achieved; the actual brightness value of the current ambient light can be detected; the terminal can conduct brightness adjustment according to the actual brightness value; and the backlight adjustment accuracy of the terminal can be effectively improved.

The invention discloses a novel energy vehicle charging pile. The novel energy vehicle charging pile comprises a base body and an operating chamber arranged in the base body, a rotary shaft which is operably connected with the base body is arranged at the rear end of the operating chamber, the upper end of the rotary shaft extends outside the base body and is fixedly connected with a pile body, a power charging port is formed in the pile body, a rotary dial is arranged on the top end surface of the base body, a shaft hole used for the rotary shaft passing is formed in the midpoint of the rotary dial, and a first toothed wheel is arranged, in the position of the top of the operating chamber, on the rotary shaft. According to the novel energy vehicle charging pile, the overall structure is simple, manufacturing cost is low, the structure is safe and stable, automatic adjustment and locking of the direction of the power charging port of the pile body can be realized, automatic control to adjust the direction of the power charging port of the pile body can be realized, the existing requirement of people to adjust the direction of the power charging port of the pile body is met, operation is simple and convenient, the direction of the power charging port of the pile body can be adjusted precisely through the arranged rotary dial, and adjustment accuracy is increased.

The invention provides a target positioning method and system under a large-tilt remote observation environment. The target positioning method is characterized in that video images and laser ranging information are integrated to achieve target positioning. The target positioning method comprises the steps of carrying out data preparation, performing target coarse positioning by using the laser ranging information to serve as a constraint condition, determining a coordinate extrapolation tolerance range of a ground feature point, and modifying initial coordinate values of the ground feature point; performing GPS-aided bundle block adjustment with virtual control point constraints by taking a target point as a virtual control point; and performing nonlinear iteration solving for forward intersection target positioning by taking the target coarse positioning result as an initial value and taking the acquired image position and attitude as known conditions, and repeating the above steps toimprove the target positioning accuracy. The target positioning method effectively integrates advantages of an optical sensor and a laser device on information acquisition, not only can meet the requirement of laser single-target positioning, but also can meet the requirement of optical video image multi-target positioning, and improves the target positioning accuracy to the great extent.

The present disclosure discloses a method and an apparatus for adjusting a visible area of a screen, and belongs to the field of display technology. The method comprises: acquiring a distance between a human face and a screen and a position of the human face via at least one camera; determining a matching display size of a visible area of the screen according to the distance; determining a matching display position of the visible area according to the position of the human face; and controlling the visible area to be displayed on the screen according to the matching display size and the matching display position. The method and apparatus disclosed by the present disclosure solve the problems that because the size of the visible area needs to be adjusted by a user manually in the related art, the operation is cumbersome and adjustment accuracy is low; and the automated adjustment of the matching display size and the matching display position of the visible area is achieved, thereby reducing operation requirements on the user and helping improve adjustment accuracy, and furthermore achieving the technical effects of reducing eye rotation fatigue of the user and improving user viewing experience.

The invented defocus depth analysis is as follows. The multiple CCD image collection assemblies are installed on the projection screen of the projection optical system in order to obtain the images. The quantity of the defocus depth, the amount of inclination in horizontal direction and in vertical direction, the quantity of rotation of the LCD in the object plane of the optical projection systemas well as the relative position deviations of the three pieces of LCD are obtained. Then, the adjusting parameters are given out. The advantages of the invention are (1) High accuracy of the adjustment: the precision is assured by the system, not affected by the operators. (2) Fast adjustment speed; the settings with 18 degree of freedom are given at same time and suitable to the need of large scale of production. (3) Simple operation.

The invention discloses a novel calibration method for a bridge support device in an operation period. The method comprises the following steps: acquiring a relational expression between a lateral loading force standard value and a vertical actual bearing capacity of a support device, repeatedly applying lateral loading forces with different values to the support device according to requirements,recording standard values of loading points, and simultaneously acquiring the vertical actual bearing capacity of the corresponding support device when the lateral loading force values are different;and forming vertical force calibration according to the actual vertical bearing capacity of the support device obtained according to the different lateral loading force values and the vertical monitoring force value of the support at the same moment. A height adjusting mechanism is arranged on the top face of a support body, the support body is placed in a bottom basin with a basin cavity structure, a force measuring bearing body is arranged on the bottom face of the support body, a sensing device is installed on the side face of the force measuring bearing body, and a signal line of the sensing device penetrates through the side wall of the bottom basin to be connected with an external data collecting system. According to the invention, the accuracy and reliability of monitoring data after the support sensing device is replaced can be ensured, and the height of the support can be accurately adjusted.

Embodiments of the invention provide a method, a device, and a system for adjusting an application setting of a terminal. The method comprises the following steps of acquiring environment information of an environment where the terminal is located; extracting environment feature information from the environment information; and adjusting the application setting of the terminal according to the environment feature information. In the embodiments of the invention, convenience of an operation is greatly improved, an adjustment threshold is reduced, and consumed time for adjustment is shortened; and in reality, the terminal does not need to carry out multiple responses to am adjustment operation of a user so that a waste of system resources is reduced.

The invention provides a lower limb rehabilitation robot. The robot comprises a rack, a lifting weight reduction mechanism, a mechanical leg moving mechanism, a mechanical leg movement mechanism, a treadmill and a treadmill lifting mechanism; the rack comprises a rack bottom frame, supporting columns arranged at one end of the rack, supporting crossbars disposed between the supporting columns, anda supporting vertical rod disposed in the middle of the supporting crossbars, wherein the bottom of the supporting vertical rod is fixed to a horizontal frame of the rack bottom frame; the treadmillis disposed in the rack bottom frame; the treadmill lifting mechanism is arranged on a bottom plate of the treadmill; the lifting weight reduction mechanism is arranged on the sides of the supportingcolumns; the mechanical leg moving mechanism is arranged on the side of the middle supporting crossbar, and the two ends of the lifting weight reduction mechanism are fixed to the supporting columns;the mechanical leg movement mechanism is arranged on a mechanical leg mounting plate of the mechanical leg moving mechanism. The robot can effectively adjust the leg length of mechanical legs and canbe adjusted according to the body width of a patient to make gait simulation more accurate, the structure is safe and small, and the overall height is reduced to the maximum extent.

A steering rack performance test bed comprises a rail device capable of bearing a test vehicle and a traction device located at the front side of the rail device, the traction device comprises a fixing base fixedly arranged on the foundation and a traction rod capable of connecting and drawing the test vehicle, the traction rod is connected with the fixing base, and the rail device comprises a plurality of rail wheel units which are arranged from front to back. The steering rack performance test bed enables the test vehicle to operate on the rail device, can realize the railway vehicle rolling tests comprising a hunting instability critical speed test, a bearing running temperature rise test, etc., and is small in occupation space. The test vehicle drives in situ to test without needing to move actually, so that the safety is strong, the driving state of the vehicle is also convenient to observe during the test process, and the detection sensors also can detect the experiment data more accurately. By the inertia wheel devices, the steering rack performance test bed also can realize the braking performance tests comprising the emergency braking, the braking distance test of the service braking, the temperature rise tests of the brake-shoes and the wheels during a braking process, etc.

The invention provides a ceiling spotlight with precise positioning of a gear. The ceiling spotlight comprises a lamp body, a lamp bead, a rotating assembly, an outer cylinder and an angle adjusting assembly. The lamp bead is mounted inside the lamp body, and the lamp body is assembled at the right end of the angle adjusting assembly. The angle adjusting assembly is mounted inside the outer cylinder, and the rotating assembly is mounted at the left end of the outer cylinder. The rotating assembly comprises an inner cylinder, annular sliding blocks, annular sliding grooves, a pulling rope, guiding wheels, a snap ring, springs, connecting columns, a bracket, a first micro motor, a fixing plate, a first rotating shaft and a connecting frame, and the angle adjusting assembly comprises an arc-shaped sliding block, an arc-shaped sliding groove, a groove, an arc-shaped rack, an arc-shaped through hole, the gear, a second rotating shaft, an opening, a cooling fan and a second micro motor. Compared with the prior art, the ceiling spotlight with precise positioning of the gear has the following beneficial effects that the rotation function is realized, the irradiation range is expanded, theinstallation and disassembly are convenient, the purpose of conveniently adjusting the illuminating angle is achieved, and the adjustment accuracy is high.

The invention discloses a universal automatic machining device for turning and milling of a screwdriver head. The universal automatic machining device for turning and milling of the screwdriver head aims to overcome the defects that according to existing similar machining devices, the machining objects and the machining process are not diversified, and the existing similar machining devices are not suitable for machining of most existing screwdriver heads; according to an existing universal machining center for turning and milling, the machining cost of the screwdriver heads is excessively high and the working efficiency is low. According to the technical scheme, the universal automatic machining device for turning and milling of the screwdriver head is characterized by comprising a clamping and fixed-point rotating assembly, a turning and milling tool composite feeding assembly and a workpiece conveying device, the clamping and fixed-point rotating assembly is composed of an assembly base, a hollow main shaft, a sliding openable chuck, a hollow rotating oil hydraulic cylinder, a servo motor, a circumferential fixed-point inductor and a circumferential fixed-point induction block, the turning and milling tool composite feeding assembly is composed of an assembly table, a transversely-feeding mechanism, a turning longitudinally-feeding mechanism, a milling longitudinally-feeding mechanism, a turning tool rest and a milling device, the milling device is composed of a base body, a vertically-milling main shaft and a milling motor, and the milling longitudinally-feeding mechanism is composed of a sliding rail plate, a sliding base, an oil motor, an eccentric wheel and an eccentric wheel rim.

The invention relates to an intelligent adjusting system for the height of a multi-shaft heavy-duty cross-country chassis. The system comprises a suspension height measurement module, a central processor module, a display interaction module, an execution module, an image processing module, a positioning processing module and a mode module. The central processor module is connected with a CAN vehicle body bus to receive vehicle speed information in real time, the image processing module is connected with a driving image system to acquire road surface information, and the positioning processingmodule is connected with a vehicle-mounted BDS and can receive vehicle position information synchronously; the information is sent to the mode module to select a preset chassis height mode, an instruction is sent to the execution module to make the chassis reach a mode set height, the suspension height measurement module transmits the height information to the central processor module in real time, and thus intelligent adjustment of the chassis height is achieved. By means of the system, intelligent adjustment of the ground clearance of the chassis under no load or full load can be achieved, the highway maneuverability, obstacle-crossing driving and railway transport of the chassis are guranateed to improve the maneuverability and the trafficability characteristic, and meanwhile it is avoided that as the center of mass is high, the stability and the driving speed in railway transport cannot be guaranteed.

The invention discloses a circuit and a method for accurately measuring a resistor in a Wheatstone bridge by using a computer. The circuit comprises a PC, an embedded processor, the Wheatstone bridge,a bridge switching circuit and a voltage comparison circuit; the PC is configured to send a control instruction, adjust bridge arm resistance, judge bridge balance, collect measurement data, and calculate data; the Wheatstone bridge is composed of a first comparison resistor, a second comparison resistor, a resistor to be tested, and a resistance source, and is configured to adjust the resistancevalue according to the instruction transmitted by the PC; the bridge switching circuit is configured to provide a circuit branch so as to change the positions of the first comparison resistor and thesecond comparison resistor in the Wheatstone bridge; and the voltage comparison circuit is configured to collect a voltage difference between an upper and a lower end of the bridge and output the voltage difference to the embedded processor. The circuit disclosed by the invention effectively solves the problems of cumbersome measurement operation and large measurement error in the process of resistance measurement, makes the processing of the data more intuitive, scientific and precise, and also facilitates later application requiring precise resistance correlation.

The invention discloses an automatic mold adjusting method, belonging to the technical field of tyre vulcanizers. Under a mold adjusting state, the automatic mold adjusting method comprises the following steps: (a) setting a standard mold height value H in a control unit of the vulcanizer, wherein the standard mold height value H is a distance between a fixed height position on the vulcanizer and an upper side plate of a standard mold; (b) replacing a tyre mold; (c) measuring an actual height value H1 from a fixed height position to an upper side plate of the replaced tyre mold, and transmitting the actual height value H1 into the control unit; (d) comprising H1 and H, driving a driving cylinder to drive the tyre mold to move by means of the control unit, wherein the movement distance delta H is equal to absolute (H-H1). According to the automatic mold adjusting method, the height adjustment of the mold can be automatically finished after the tyre mold is replaced, the labor intensity of operation workers is lightened, the mold replacement operation time is saved, the automation degree is improved and the production efficiency is improved; the automatic mold adjusting method is widely applied to the adjustment of the tyre mold in the vulcanizer.

The invention relates to an intelligent debugging and calibration system of an ultra-high voltage isolation switch based on a laser measurement technology. The calibration system comprises a laser measurement sampling device, a mathematical modeling system and an expert analysis decision system, wherein the mathematical modeling system and the analysis system are installed in a debugging computer;the laser measurement sampling device collects various position parameters of a target isolation switch in a space coordinate system; the mathematical modeling system establishes a mathematical modelof the isolation switch space by using the position parameters collected by the laser sampling device; and the expert analysis decision system compares the actual mathematical model of the isolationswitch to be debugged with a standard spatial position model of the isolation switch stored in a database and gives an error and calibration scheme. Compared with the prior art, the ultra-high voltageisolation switch intelligent debugging and calibration system has the following advantages: the debugging process is completed in one step, the work efficiency is improved, and the debugging accuracyis improved.

The invention provides a context-based target scale self-adaptive tracking method, and relates to the field of image tracking. A target scale adjustment mechanism is improved by using a target scale adjustment algorithm based on apparent characteristics and context information based on the existing scale direction self-adaptive mean drift algorithm. The method mainly comprises two parts of scale adjustment type determination based on the context information and scale calculation by scheduling an adjustment function and using apparent information and the context information. The context information of the target scale is introduced in the adjustment mechanism, and detailed classification is performed on the adjustment type according to the change of the scale context information on the basis of considering the apparent information so that the adjustment accuracy of the original algorithm for the target scale on the target numerical area and the effective area coverage can be enhanced, and the adjustment accuracy of the original SOAMS algorithm for the target scale can be effectively enhanced.

The invention relates to the technical field of metal material processing, and discloses an automatic rolling mill roll gap level adjusting method. Pressure measuring heads arranged below the two sides of a rolling mill are included and used for detecting the rolling pressure and conducting difference value calculation on the detection value, and accordingly, the rolling pressure deviation basis reference is obtained; and the pressure measuring heads are further used for conducting real-time detection on the rolling pressure on the two sides of the rolling mill when a rolling piece enters thetail throwing stage, difference value calculation is conducted, and the real-time rolling pressure deviation is obtained. According to the automatic rolling mill roll gap level adjusting method, in the rolling piece tail throwing process, the rolling piece deflection direction is automatically recognized according to the roll gap deviation adjusting amount, the roll gap deviation adjusting amountis transmitted to an AGC control system, the roll gap deviation AGC cylinder stretching-out amount is added on the basis of the original AGC cylinder stretching-out amount, accordingly, automatic control over deflection in the rolling piece tail throwing process is achieved, rolling breakage, tail throwing, rolling waste and other accidents caused by rolling piece deflection are reduced, the operation rate of the rolling mill is increased, meanwhile, the yield of a rolling line is increased, and the production cost is greatly reduced.

The invention relates to 3D printing equipment having a real-time detection feedback function. The equipment comprises a workbench, a supporting column, a cross beam and a printing mechanism. In the equipment, air cylinders control up-and-down movement of a lifting rod, more accurate height adjustment of a printing nozzle can be realized through a distance sensor, besides, a telescopic motor controls the printing nozzle to move horizontally through a telescopic rod, meanwhile, the moving accuracy of the printing nozzle is further improved through a speed reducer, and the printing reliability is improved; in addition, in a working power supply circuit, the model of an integrated circuit is MAX688 and has the characteristics of low working current and high driving current, and thus, the high-power motor can be driven; meanwhile, output power is further amplified through a power amplification circuit mainly comprising a first triode and a second triode, the reliability of a driving motor is guaranteed, and the practical value and the reliability of the printing equipment are improved.

The invention discloses a laser induced breakdown spectrometer and a spectral signal collection method of the same, belonging to the technical field of laser diagnostics and measurement. The spectrometer comprises a light receiving lens cone, a laser device, a rotating platform and a rotating support column, wherein the rotating platform is connected with the rotating support column and can rotate around the central axis of the rotating support column, relative to the central axis, the laser device is fixed, the light receiving lens cone is fixed on the rotating platform, and the laser device and the light receiving lens cone both face the same position on the central axis and respectively emit pulse laser and collect the spectral signal. With the method, the light receiving lens cone is fixed on the rotating platform and can rotate around a sample exciting point, and simultaneously, the light receiving lens cone always faces the sample exciting point and collects the spectral signals from different angles of an exciting plasma body. The spectrometer and the signal collection method provided by the invention can regulate the spectral signal collection angle just by rotating the rotating platform without detaching each component, so that the spectrometer and the method have the advantages of being simple, quick and steady. The spectrometer and the method are suitable for the accurate measurement of laser induced breakdown spectrum.

The invention relates to the technical field of automobile control, in particular to a self-adaptive safety belt adjusting system and an automobile. A wear recognition module in the self-adaptive safety belt adjusting system includes a human body recognition camera unit, the human body recognition camera unit is used for identifying safety belt wearing information of a current occupant; an ECU control module is used for receiving the safety belt wearing information of the current occupant and determining whether the occupant correctly wears a safety belt or not, if not, the ECU control moduleis further used for determining whether the safety belt can be properly worn by adjusting fixed gears of the safety belt or not, and if yes, fixed gear information when the safety belt is properly worn is sent to a safety belt control module; and the safety belt control module is used for controlling a safety belt adjuster to adjust the fixed gear of the safety belt according to the fixed gear information when the seat belt is properly worn. According to the self-adaptive safety belt adjusting system and the automobile, full-automatic operation is realized, the safety belt adjustment accuracyis high, the adjustment efficiency is high, and while riding experience feeling of the occupant is improved, driving safety is improved.

The invention provides a stepless speed adjusting method and control system for the fan speed of wireless base station equipment. The adjustable resolution ratio of the fan speed is accurate to the inherently adjusted resolution ratio of the fan, and the fan speed adjustment is stepless. The primary fan speed is calculated by establishing a fan speed adjustment function via test data, and different weighted filtering methods are used to calculate the actual fan speed according to the fan speed variation trend. By using the stepless speed adjusting method and control system for the fan speed, no matter the adjustable resolution ratio of the fan speed is the fan speed adjustment function or stepless, the adjustment accuracy of the system can be improved, and an adjustment space is provided for system noise reduction. Weighed filtering is carried out on the actual fan speed according to the fan speed variation trend, quick following can be realized when the fan speed is increased, and slow following can be realized when the fan speed is reduced. Not only can the system satisfy the heat radiation requirement, but also power consumption is reduced.

The invention relates to an ammonia injection uniformity adjusting method for an SCR (Selective Catalytic Reduction) flue gas denitration system. The ammonia injection uniformity adjusting method comprises the following steps: (1) adjusting the valve opening degrees of an ammonia injection grid to make the valve opening degrees identical; (2) adjusting the inlet content of diluent air; (3) calculating the target diluent air quantity of each single branch pipe; (4) calculating the target differential pressure on the two sides of a throttle orifice plate; and (5) adjusting the opening degrees of the single branch pipes of the ammonia injection grid in sequence so as to reach the target differential pressure on the two sides of the throttle orifice plate in the step (4). The adjusting method disclosed by the invention is high in degree of accuracy, simple in structure and reliable in result; the uniformity of concentration of NOx at a denitration outlet can be effectively improved, the ammonia escape is alleviated, and thus the safety and stability in operation of the system are improved.

Provided is a smart cotton topping mechanism. The smart cotton topping mechanism includes a lifting system, a location detection device, a control system and a topping device; the lifting system includes a whole machine lifting device and a topping lifting device, the topping lifting device is arranged on the whole machine lifting device, and the topping device is slidably connected with the topping lifting device; the whole machine lifting device is of a parallel four-bar linkage structure, a hydraulic system is arranged on the parallel four-bar linkage structure, and the location detection device is arranged on the topping device; the whole machine lifting device, the topping lifting device, the location detection device, the hydraulic system and the topping device are all connected witha control system. According to the smart cotton topping mechanism, the adjustment accuracy of the control system on the whole machine lifting device, the topping lifting device, the hydraulic systemand the topping device is high, and crops are not easily damaged. The smart cotton topping mechanism is suitable for topping operation in a cotton topping stage in a cotton field. The smart cotton topping mechanism is simple in structure, easy to implement and low in cost.

The invention relates to a headset. The headset comprises a connecting rod structure, a main control chip, a pressure sensor and headset earflaps arranged at two ends of the connecting rod structure, wherein the connecting rod structure comprises an upper half shell of the connecting rod and a lower half shell of the connecting rod, which are buckled to form a whole body; a support arm is further arranged in a part of the connecting rod structure, which is close to at least one headset earflap, and a permanent magnet is fixedly arranged on the support arm and the lower end of the permanent magnet is fixedly connected to the headset earflap; an upper electromagnet and a lower electromagnet are fixedly arranged on the inner wall of the lower half shell of the connecting rod; the main control chip controls a distance between the upper electromagnet and the permanent magnet and a distance between the lower electromagnet and the permanent magnet according to a pressure value which is fed back by the pressure sensor, so that the support arm moves along with the headset earflap. The headset is used for intelligently adjusting the length of the connecting rod structure in the headset, an adjustment process is timely and high in accuracy, and the user experience is improved.