33results about How to "Eliminate mutation" patented technology

The invention provides a display device and a display panel. A standard of carrying out capacitor compensation on each line of scan lines of a first display area with relatively few pixel units comprises the fact that a capacitor total load value of the line of scan lines adjacent to a second display area is equal to own capacitor load value of a line of scan lines in the second display area, andthe capacitor total load value of each line of scan lines close to the second display area and the capacitor total load value of each line of scan lines away from the second display area are graduallyreduced. The display device and the display panel have the advantages that through utilization of the feature that human eyes are insensitive to gradually varied brightness variation, mutation of thecapacitor total load value of each line of compensated scan lines in the first display area and at the border of the first display area and the second display area is eliminated, so the display is uniform; and through gradual variation of the capacitor total load values in the first display area, a setting area of compensation capacitors is reduced, reduction of the area of a frame area is facilitated, a narrow frame is realized, and a screen-to-body ratio is increased.

The invention discloses a handwriting input calibrator, which comprises a receiving box, a handwriting pen, a pressure sensor and an ultrasonic generator, wherein the pressure sensor and the ultrasonic generator are arranged at the lower end of the handwriting pen; left-end and right-end ultrasonic receivers and a central processing unit (CPU) controller are arranged in the receiving box; one ultrasonic generator is also arranged at the upper end of the handwriting pen; ultrasonic signals which are simultaneously generated by the ultrasonic generators at two ends of the handwriting pen are received by the left-end and right-end ultrasonic receivers of the receiving box and input to the CPU controller; and the signals are converted by the CPU controller, and x and y coordinate values of displacement of a handwriting pen point are calculated. The position change of the pen point caused by different handwriting modes or habits is calculated by detecting time in which ultrasonic waves of the upper and lower ends of a pen holder arrive at the left-end and right-end ultrasonic receivers, and a displacement difference is accurately compensated according to the x and y coordinate values which are detected and calculated by the CPU controller, so the positions of lines or graphs which are written on paper by the handwriting pen completely correspond to the lines or the graphs which are displayed on a display screen of the computer, and the inconformity or variation of handwritings which are stored and displayed by the computer and the handwritings which are formed on the paper by the handwriting pen point is eliminated.

The invention relates to the technical field of super-hard composite materials, particularly to a high-quality polycrystalline diamond compact and a preparation method thereof. According to the invention, the high-quality polycrystalline diamond compact is manufactured by using double-beam 3D printing equipment which performs processing with high-power continuous beams and ultra-fast pulsed laserbeams alternately; and gradual transition layers are formed among layers, so bonding between a matrix and diamond and between the diamond and nickel is firm, and an interlayer interface is free of sudden changes in thermal and mechanical quantities. The polycrystalline diamond compact of the invention comprises, arranged from bottom to top, the matrix, a matrix-diamond gradual transition layer, adiamond layer, a diamond-nickel gradual transition layer, a nickel layer and a cobalt-free binder. The diamond-nickel gradual transition layer improves the heat dissipation performance of the polycrystalline diamond compact, prevents thermal stress corrosion from generating cracks on the surface of the diamond layer, and greatly improves the thermal stability of the polycrystalline diamond compact. Double-beam 3D printing technology used in the invention makes D-D bonding firm and ultra-high hardness to be obtained, so the polycrystalline diamond compact has high heat resistance, wear resistance and impact toughness, and thus has prolonged service life.

The invention discloses a hurst index-based slope safety evaluation method, which comprises the following steps of: (1) performing safety classification; (2) preprocessing data; (3) simply prejudging the data; (4) calculating hurst indexes and related parameters; (5) determining a slope safety level; and (6) analyzing other parameters. According to the hurst index-based slope safety evaluation method provided by the invention, the integral safety of a slope is analyzed and evaluated by calculating the hurst index H of each monitoring point in a slope monitoring system and then combining all hurst indexes H; and compared with the conventional other methods, the method has the advantages of capability of eliminating the sudden change of monitoring data caused by field construction and the like and excellently high applicability.

The invention relates to a method and a device for manufacturing a low-loss micro-nanometer fiber bragg grating sensor in a chemical corrosion method. The device comprises a broad-band light source, an optical fiber circulator, a 3-dB optical fiber coupler, a spectrograph, an optical power meter, a stepping motor, an optical fiber written with a bragg grating and a polytetrafluoroethylene container containing corrosion solution. The method and the device control the speed of the optical fiber written with bragg grating in corrosion mode so as to manufacture the sensor through an automatic control technique. An optical fiber gradual-changing area can be slowly transited to a micro-nanometer fiber part by slowly lifting the optical fiber so that refractive index changing gradient of the optical fiber gradual-changing area can be reduced. The method and the device for manufacturing the low-loss micro-nanometer fiber bragg grating sensor in the chemical corrosion method has the advantages of being high in accuracy, low in cost, good in anti-interference performance, simple and practical in structure, suitable for mass production and the like.

The invention relates to the technical field of super-hard composite materials, in particular to a method for prolonging the endurance life of a diamond compact and the diamond compact. The method forprolonging the endurance life of the diamond compact includes the steps: irradiating an interface between a substrate and a diamond layer and the surface of the diamond layer by ultra-fast pulse laser beams; polishing the surface of the diamond layer. The diamond compact is manufactured by the ultra-fast pulse laser beams, a gradient transition layer is generated between layers, so that the substrate and the diamond layer are firmly combined, and sudden change of a thermal quantity and a mechanical quantity on the interlayer interface is avoided. The surface (cold annealing) of the diamond layer is irradiated by the ultra-fast pulse laser beams, thermal stress concentration and lattice defects of the diamond layer can be eliminated, D-D bonds on the surface of the diamond layer can be firmly bonded, cobalt atoms are 'extruded' to the surface of the diamond layer, a rich cobalt layer is removed by polishing, ultra-high surface smoothness is realized, the high-temperature resistance ofthe diamond compact is improved, and the service life of the diamond compact is prolonged.

The invention discloses a preparation method and application of a DNA polymerase accelerant. The DNA polymerase accelerant is composed of three kinds of heat-stability protein which are uracil DNA glycosidase UDG, hypoxanthine DNA glycosidase AlkA and endonuclease IV respectively. UDG is in charge of cutting off dU basic groups generated in a PCR, AlkA is in charge of cutting off generated dI basic groups, and endonuclease IV is in charge of cutting off basic group removal loci. The joint action of the three kinds of protein can achieve the purposes that the inhibition effect of the dU/dI basic groups on the activity of B type DNA polymerase is released; the dU/dI basic groups are repaired and corrected, and the PCR faithfulness of the A type and B type DNA polymerase is improved. In addition, the activity of 3'-excision enzymes of endonuclease IV can provide deleted correction activity of the A type DNA polymerase. The DNA polymerase accelerant can effectively increase the PCR yield of the B type DNA polymerase by 1-3 times.

The invention relates to a method for controlling the output power of the rotor side of a double-fed draught fan. Feedforward control is introduced, so that the influence of bus voltage fluctuation is eliminated, it is guaranteed that the power of an object model is stably output under the condition of bus voltage fluctuation, after improved control is applied, the capacitor capacity can be reduced, and engineering cost is reduced. A rotor side improved control strategy is high in control accuracy and high in response speed, the power fluctuation can be reduced during direct voltage fluctuation, and output is more stable.

The invention discloses a method for oil mass signal synchronous compensation of an on-vehicle positioning terminal. The on-vehicle positioning terminal employing the method comprises a central processing unit, a GPS positioning unit, a communication unit, a display unit, a keyboard and an oil mass information acquisition system, wherein the GPS positioning unit, the communication unit and the display unit are connected with the central processing unit respectively; and the keyboard and the oil mass information acquisition system are also connected with the central processing unit respectively. In the method, by synchronously acquiring power supply signals and oil mass signals, and performing operation processing on the signals by the central processing unit through an analog-digital converter, the abrupt changes of the oil mass in an oil tank are eliminated, a real oil mass value is input to a local display unit or is sent to a remote control center by the communication unit so as to realize the real-time accurate monitoring of the oil mass of the oil tank of a vehicle.

The invention is suitable for the technical field of electric quantity calibration, and provides a battery electric quantity determination method and device, terminal equipment and a storage medium, and the method comprises the steps: obtaining a first calibration voltage of a battery at an (i-1) th sampling moment when it is determined that a battery voltage value before an ith sampling moment suddenly changes, the first calibration voltage is determined based on the j-n-th voltage variation of the battery in the j-n-th sampling period and the j-th voltage variation of the battery in the j-n-th sampling period, and the j-th sampling period is a sampling period in which the voltage variation is smaller than a preset threshold value for the first time after the j-n-th sampling period; obtaining a second calibration voltage based on the first calibration voltage and the jth voltage variation; determining the battery electric quantity at the ith sampling moment based on the second calibration voltage; voltage jitter is eliminated, the battery electric quantity is determined more accurately, and the battery electric quantity changes stably.

The invention relates to multi-positioning-system coupled anti-interference satellite positioning equipment. The equipment comprises a processor chip, an inertial navigation chip and a satellite positioning chip which are integrated on a PCB substrate, and one satellite positioning chip is connected with one satellite receiving antenna to form a satellite positioning system; and the processor chip is configured to count the signal-to-noise ratio of satellite signals of each satellite positioning system, select the satellite positioning system with the maximum signal-to-noise ratio exceeding a first preset threshold value as a main positioning system, and the other satellite positioning systems as alternative positioning systems, switch one alternative positioning system into a new main positioning system and select a trustworthy system from other alternative positioning systems if it is determined that the number of satellites of the main positioning system is lower than a first preset number, and perform difference decreasing calculation on the inertial navigation positioning data and the satellite positioning data of the new main positioning system and the trustworthy system to obtain real-time positioning data. The equipment can reduce the fall of positioning data among different systems, and realizes smooth switching of the positioning systems.

The invention relates to a fixed-wing unmanned aerial vehicle route re-planning method. The method comprises the steps of preprocessing a route consisting of broken line segments into a route consisting of straight line segments and arc segments, eliminating sudden change of the direction of the route, and continuously changing the direction of the route, so that a course instruction is continuous and step-free when an aircraft flies along the route, the turning radius is the minimum turning radius of the aircraft, and the turning performance of the aircraft is fully exerted. According to the method, the turning performance of the aircraft is fully exerted, and an accurate and feasible flight route is provided in occasions where the flight path needs to be accurately controlled, such as reconnaissance tasks, formation flight and the like.

The invention relates to a monthly runoff grey prediction method and device, computer equipment and a storage medium. The method comprises the steps of obtaining monthly runoff original data; carryingout secondary smoothing processing on the monthly runoff original data to obtain processed monthly runoff data; performing data modeling processing according to the monthly runoff data to obtain a monthly runoff grey forecasting equation; and performing monthly runoff data prediction according to the monthly runoff grey prediction equation to obtain monthly runoff prediction data. Modeling processing is carried out on monthly runoff data after secondary smoothing processing, a more accurate monthly runoff grey prediction equation can be established, monthly runoff prediction data with small errors are obtained, and the prediction precision of the simulated monthly runoff prediction data is guaranteed.