176results about How to "Easy and accurate calculation" patented technology

A pattern analysis method includes: a first step of preparing pattern layout data including a plurality of first regions and a plurality of second regions; a second step of selecting either said plurality of first regions or said plurality of second regions as a target region in which a critical area of said pattern layout data is to be calculated; and a third step of extracting, from said target region, rectangular regions each having a width within a given range. The method further includes; a fourth step of obtaining a total area of said rectangular regions; and a fifth step of calculating said critical area by using said total area.

The invention discloses a calculation method for dynamic reserves of gas reservoir. The calculation method aiming at solving the problems that an existing gas reservoir dynamic reserve calculation method is lack of information, harsh in use conditions or complicated in analysis process, the calculation method is based on the advantages of a material balance method and is combined with the gas seepage process, a vertical pipe flow model, a gas well productivity equation and a material balance equation. The calculation method comprises the following steps that S1, production dynamic data are prepared; S2, the bottom hole flowing pressure is calculated, specifically, the bottom hole flowing pressure of a gas well is calculated according to the processed production dynamic data of the gas well; S3, the formation static pressure is calculated, specifically, a binomial deliverability equation of the gas well is adopted to calculate the average formation pressure of the gas well; S4, flow stages are divided, specifically, a boundary control flow stage, an unstable flow stage and a transition stage are determined; and S5, the dynamic reserves are calculated, specifically, the dynamic reserves after the unstable flow stage of the gas well is finished is calculated, and the dynamic reserves is added to the cumulative gas production in the unstable flow stage to get the true dynamic reserves of the gas well.

A method of verifying reasonable working resistance of a working face hydraulic support includes the steps of measuring and calculating four resistance values p required by verification of working face support reasonable working resistance, and a sum of the values; measuring and calculating working face roof settlement delta hi; dividing working face roof control effects; determining a support reasonable working resistance alternative Ri; counting a ratio A1 of support end resistance ri during working face roof weighting, exceeding the values p and the sum; verifying working face support reasonable working resistance R. The method has the advantages that finished working face support reasonable working resistance and the efficiency of determining the support reasonable working resistance is greatly improved in terms of methodic systemization and parameter quantification.

The invention discloses a method for calculating the switching-off and switching-on time of a breaker and the stroke of a moving contact of the breaker. According to the method, first, a switching-on operating coil starts to be powered on after the breaker receives a switching-on instruction, the coil generates sufficient electromagnetic force to push an iron core to move along with increasing of current so that an energy storage mechanism can be started to release energy to generate acting force for driving the moving contact to move, then, the moving contact can make contact with a fixed contact and arrive at a position where switching-off is just achieved at the moment, and the stoke of the moving contact is called as idle stroke before; second, the moving contact continues moving on to arrive at the switching-on position and keeps a switching-on state with a mechanism, and the process is called as over-stroke; the stroke distance of the moving contact is the sum of the idle stroke distance and the over-stroke distance; in the switching-off process, the first step and the second step are repeated in the same way. The method is simple in algorithm, easy to realize in an embedded system, capable of lowering cost effectively and beneficial to miniaturization of the system. The moment when the moving contact of the breaker starts to move and the moment when the moving contact of the breaker stops moving can be accurately acquired.

The invention discloses an ultrasonic positioning device for a four-rotor unmanned aerial vehicle. The device comprises the four-rotor unmanned aerial vehicle, an ultrasonic emission control module, an ultrasonic emission module, an ultrasonic receiving control module and a plurality of ultrasonic receiving modules. The ultrasonic receiving control module is connected with the ultrasonic receiving modules and fixed to the ground, one end the ultrasonic emission control module is connected to the output end of a flight control plate of the ultrasonic emission control module, and the other end of the ultrasonic emission control module is connected with the ultrasonic emission module. According to an ultrasonic positioning method for the four-rotor unmanned aerial vehicle, the ultrasonic receiving modules are adopted, every three ultrasonic receiving modules form one set for spatial positioning, the positioning result and positioning results of other sets are corrected mutually, positioning precision is improved, and errors are reduced. The ultrasonic positioning method for the four-rotor unmanned aerial vehicle has the advantages of being easy to operate, simple and accurate in calculation, low in computing resource requirement for a factual system and relatively low in cost, and can achieve the positioning precision of the four-rotor unmanned aerial vehicle more easily.

The invention relates to a method for measuring density of slurry in a desulfurization absorption tower, which comprises the following steps: firstly selecting a low-pressure side pressure sampling point and a high-pressure side pressure sampling point in the vertical direction of an absorption tower body, then leading out sampling pipe sections from the high-pressure side pressure sampling point and the low-pressure side pressure sampling point respectively, next connecting a high-pressure side capillary tube and a low-pressure side capillary tube of a double-flange diaphragm differential pressure transmitter to a sampling pipe section respectively, and finally calculating a density value by a measured value delta P of the double-flange diaphragm differential pressure transmitter according to a formula rho1=(delta P + rho2 gh)/(gh), wherein in the formula, rho1 is the density of the slurry in the absorption tower, rho2 is the density of the filling liquid in the capillary tube, g is gravitational acceleration, and h is the altitude difference between the high-pressure side pressure sampling point and the low-pressure side pressure sampling point. The method can measure more conveniently and accurately, needs no complex operation or measures, can simply maintain corresponding used measuring equipment and devices with low cost, and ensure stable and reliable running of the measuring equipment and the devices.

A test system for assessing the performance of an analyzer for a gas or an anesthetic agent includes a source of a calibration gas mixture, a valve for controlling flow of gas from the source, a low-pressure tube, a sample tube in communication with the low-pressure tube, and a connector for assembling the analyzer to the test system. The test system may also include a valve for diverting ambient air into the sample tube instead of the calibration gas mixture. Additionally, the test system may include one or more of a barometer, a flow meter, an analyzer for gas or anesthetic agents, a flow restriction system, and a relatively high pressure source. Methods for testing analyzers are also disclosed.

A simple and accurate dead time dispersion measurement method and a voltage source inverter control method that can prevent the occurrence of an unstable phenomenon are provided. The control method controls a voltage source inverter of a PWM system, which includes a power semiconductor device controlling a level of a voltage, a frequency and a phase. According to the control method, before operation, voltage error information for each polarity of respective phase currents of the inverter is stored. And during the operation, the voltage error information is read to compensate for a voltage instruction value or a pulse width of a PWM instruction signal, so that a voltage error can be corrected.

A method etc. for calculating traffic distribution at base stations and accurately and simply calculating the performance in the base stations in a mobile communication system is provided. A method etc. for simply and accurately calculating the blocking probability in a communication system is also provided. A subdivision data holding unit holds data of transmission power Pi and traffic intensity Ai of each subdivision. A propagation associated data holding unit holds data used for calculating received power, such as the height above the ground of antennas of the base stations and mobile stations. A received power calculating unit reads necessary data from the subdivision data holding unit and propagation associated data holding unit, and calculates the received power. A traffic calculating unit calculates the means Sm and variances Sv of the traffic at the base stations from the data calculated by the received power calculating unit. A performance calculating unit calculates the performance such as the blocking probability from the means Sm and variances Sv calculated by the traffic calculating unit and from the threshold value T provided by the threshold value generator, and outputs the results.

The invention relates to a method and a device for collecting stumpage information. The method comprises the following steps of obtaining the height of an information collector who uses an intelligent mobile electronic device to collect the stumpage information, and determining the height from the intelligent mobile electronic device to the ground according to the height of the information collector; obtaining a current look-down angle of the intelligent mobile electronic device under the situation that a focusing point of a shooting center of the intelligent mobile electronic device is aligned to a lowest point of a detected stumpage, and calculating the distance between the intelligent mobile electronic device and the detected stumpage according to the height and the look-down angle; obtaining a current look-up angle of the intelligent mobile electronic device under the situation that the focusing point of the shooting center of the intelligent mobile electronic device is aligned to a highest point of the detected stumpage, and calculating the height of the detected stumpage according to the height, distance and the look-up angle. According to the technical scheme provided by the invention, the stumpage information collecting convenience and the information collecting efficiency are effectively increased, and the implementation cost for collecting the stumpage information is reduced to a larger extent.

The invention relates to a method and a system for monitoring the insulation level of a substation power cable, which comprises a power cable insulation monitoring device based on an optimized direct current superposition method. A power cable insulation monitoring system is built based on the power cable insulation monitoring device. According to the power cable insulation monitoring device based on the optimized direct current superposition method, the same direct current voltage source is connected onto three phases of lines of a high-voltage bus respectively through three equivalent megohm-level current-limiting resistors, current is detected and sampled, a blocking capacitor is matched for use, the blocking capacitor is hooked between the primary-side neutral point of a voltage transformer and the ground, and when the insulation level of the power cable drops, the direct current can have a unique channel to conveniently and accurately calculate the direct current resistance. According to the method and the system of the invention, as the system is provided with the power cable insulation monitoring device based on the optimized direct current superposition method and the power cable insulation monitoring system is built, power cable insulation drop judgment based on the insulation monitoring system can be carried out.

In this link actuation device, arms of a plurality of link mechanisms are driven to be rotated by actuators, whereby the posture of a distal end side link hub is changed. A divided section setter divides a trajectory on a work surface on which an end effector works, into a plurality of sections at pass points and sets the sections. An arm rotation speed calculator calculates a rotation speed at which each arm performs constant speed rotation in each section on the basis of: a time period of movement in the section which is determined from a target moving speed and the distance of the section; and a rotation-angular movement amount of the arm in the section. A posture change controller performs positioning control on each actuator so as to cause its corresponding arm to continuously rotate at the corresponding rotation speed without acceleration/deceleration.

A magnet temperature calculator estimates a magnet temperature of a rotary electric machine using at least parameters related to a transmission that is coupled to the rotary electric machine.

The invention relates to monitoring equipment of intermittent flows. The monitoring equipment comprises a water inlet pipe, a measuring tank and a draining pipe. A tipping bucket is disposed in the measuring tank. The tipping bucket comprises a container for receiving liquid flowing out of the water inlet pipe and a hinge connecting the container with the measuring tank. The empty mass center of the empty container is located on one side of the hinge. The empty mass center allows the container to keep horizontal. The full mass center of the full container is located on the other side of the hinge. The full mass center allows the tipping bucket to incline and turn over. The tipping bucket further comprises a counter for recording the inclining and turning over times of the container. The monitoring equipment has the advantages that tipping bucket measuring is used, intermittent flow measuring which cannot be continuously performed is changed into measuring of the inclining and turning over times of the tipping bucket, and precise sewage measuring is achieved; the measuring of the inclining and turning over times of the tipping bucket can be easily digitalized, so that sewage amount calculation is quite convenient and accurate; due to the fact that the tipping bucket is of a quite simple mechanical structure, fault probability is reduced, and the problem of impurity blocking can be well avoided.

The embodiment of the invention discloses a high overload transformer temperature rise calculation method and apparatus and solves a problem that a traditional mineral oil dipping cable paper low-temperature resistant transformer insulating system temperature rise calculation method is not suitable for a high-temperature oil resistant and high-temperature-resistant paper insulation transformer insulating system. In the prior art, a high overload liquid infiltration distribution transformer temperature rise calculation is yet to come. The method of the embodiment comprises steps of calculating transformer winding coil loss through a numerical value finite element method, calculating heat source loss strength with the transformer winding coil as the heat source according to an effective heat radiating structure surrounding the heat source, acquiring a winding coil temperature gradient calculated curved upon different environment temperature according to transformer temperature measuring values and the heat source loss strength, determining winding temperature rise calculation coefficient, and calculating temperature rise according to the winding coil temperature rise calculation coefficient to achieve a temperature rise result.

The present invention provides a semiconductor IC component and part size measurement method and device, and a terminal device. The semiconductor IC component and part size measurement method comprises the steps of: obtaining the actual size of a calibration block, and measuring the pixel size of the calibration block through a visual measurement module; according to the actual size of the calibration block and the pixel size of the calibration block, determining a conversion relation of the pixel size and the actual size; and obtaining the pixel sizes of the components and the parts, and combining the conversion relation to calculate and obtain the actual sizes of the components and the parts. Therefore, through the actual size of the calibration block and the pixel size of the calibration block, the conversion relation of the pixel size and the actual size is determined and the pixel sizes of the components and the parts and the conversion relation are combined to simply and accurately calculate and obtain the actual sizes of the components and the parts.

The invention provides a method for straight line stereo matching, which can build a model aiming at problems of screening and uncertainty about characteristics in straight line stereo matching and realizes solving of all kinds of congruent relationships including 'one to one', 'one to many' or 'many to many' among straight lines. The workflow for solving the problem in the invention is as follows: reverting corresponding projection straight line from statistical significance by using extracted straight line characteristics, generating all the straight line characteristic groups from reverted projection straight lines, and selecting the most reliable straight line group as a solution to all the matching problems. The way of estimating end points of the projection straight line by searching effective edge points can improve the reliability of the estimation of the end points of the projection straight line segment, facilitate the realization of characteristic grouping of the reverted projection line segment by adopting the method of solving maximum clique in graph theory and enhance the accuracy of the matching result by counting the reliability of every straight line characteristic group.

A fluorescence intensity correction method including: receiving fluorescence emitted from fluorescent pigments, collecting detected values from each light detector, and obtaining a fluorescence spectrum of each fluorescent pigment as one spectrum group; separating the obtained spectrum group into a plurality of small spectrum groups; comparing the separated small spectrum groups with a fluorescence wavelength distribution of each fluorescent pigment obtained in advance and specifying the small spectrum groups as the fluorescence spectrum of any fluorescent pigment; comparing a differential spectrum between small spectrum groups that are not specified and one or more specified small spectrum groups with the fluorescence wavelength distribution of unspecified fluorescent pigments obtained in advance, and specifying the differential spectrum as the fluorescence spectrum of any fluorescent pigment; and calculating the intensity of fluorescence emitted from each fluorescent pigment.

The invention provides a gear train backlash measuring device which comprises a control system, a driving mechanism, a torque measuring mechanism, an angle measuring mechanism and a test system. The torque measuring mechanism monitors time-dependent torque of a driven gear train and sends corresponding first signals to the test system. The angle measuring mechanism monitors a time-dependent angle of the driven gear train and sends corresponding second signals to the test system. The test system comprises a storage module and a calculating module, wherein the storage module is used for storing structural parameters of the gear train, and the calculating module calculates backlashes at all stages of the gear train according to the first signals, the second signals and the structural parameters of the gear train. The gear train backlash measuring device has the advantages that through monitoring of the corresponding relationship of torque jumping and the angle of the gear train, the angles of the gear train when various meshing pairs are added to transmission are obtained, and therefore the backlashes at all the stages can be accurately and simply calculated out at a time.

The invention discloses a device and method for testing performance degradation caused by transistor lattice deformation. The device for testing the performance degradation caused by the transistor lattice deformation comprises a base, a precise displacement platform, a cushion block, a carrier and a pressing block. The method for testing the performance degradation caused by the transistor lattice deformation comprises the following steps of (1) thinning a chip; (2) cutting the chip; (3) sticking the chip; (4) leading an electrode out of a transistor; (5) fixing the carrier; (6) testing the transistor before applying the stress; (7) applying the mechanical stress onto the chip; (8) testing the transistor under the stress; (9) judging whether the performance of the transistor degrades; and (10) obtaining the lattice deformation value when the performance of the transistor degrades. The device and method for testing the performance degradation caused by the transistor lattice deformation has the advantages of easily applying compression stress onto the chip, and being large in range of the applicable mechanical stress, good in chip bend uniform, simple and accurate in lattice tension amount calculation, and is suitable for analyzing the influence of the transistor lattice deformation on the performance of the transistor.

The invention discloses a data processing method and electronic equipment. The method comprises the following steps: obtaining a first group accelerated speed data on a first dimension, a second group accelerated speed data on a second dimension, and a third group accelerated speed data on a third dimension; respectively determining the extreme point data of each group in the first group accelerated speed data, the second group accelerated speed data and the third group accelerated speed data; processing the extreme point data to obtain three extreme value chains; selecting the extreme value chain which can satisfy the preset condition in the three extreme value chains as a target extreme value chain; and performing analysis on a peak valley state of the extreme point on the target extreme value chain to obtain the step-counting data.