38 results about "Cutoff point" patented technology

The invention discloses a partition method for orderly extracting point cloud on ground. The method comprises the following steps: (1) a depth sensor progressively scanning scenes to be detected, setting the number of columns j to be equal to zero in a first column; (2) obtaining the part, belonging to the ground, before a cutoff point i and a local corresponding coordinate of a column point in the depth sensor depth information in the column according to the angle change relationship between adjacent points under a coordinate system of the depth sensor; (3) under the coordinate system of the depth sensor and a local coordinate system, sequentially judging whether a point after the cutoff point i belongs to the ground; (4) judging whether each column of depth sensor depth information in the scenes to be detected is processed, if the information is processed, point cloud ground part extraction is finished, and conducting a step (5), and if the information is not processed, enabling j be equal to j-1, and returning to the step (2); (5) conducting cluster partition based on distances on non-ground point cloud, and separating objects in the scenes. The method is used for partitioning point cloud on multiple road conditions, and enables the objects in the scenes to be separated from each other.

A method and powder system component of an apparatus for use in a printing process is disclosed, and for removing and recycling excess powder. The powder system results in a cutoff point of 3 microns rather than 50 microns of previous systems. The apparatus comprises a powder applicator, a powder remover, a helical cyclone, a powder collector, and two valves that alternately open and close. The two-valve system prevents air backflow. The powder is processed through the two-valve system. The method comprises: valve 1 is closed and powder accumulates; valve2 is closed also; after valve 1 opens, powder goes through (there is no air backflow), then valve 1 closes; then valve 2 opens and allows powder onto a powder applicator; then valve 2 closes; then the cycle starts again.

A centrifugal blower assembly includes a scroll wall, a pair of opposing sidewalls, and an adjustable cutoff plate. The scroll wall is positioned between the pair of opposing sidewalls such that the scroll wall and opposing sidewalls together define a blower chamber and a blower outlet. The scroll wall extends circumferentially between a cutoff point to an end point and defines a cutout extending circumferentially from the cutoff point. The scroll wall, the pair of opposing sidewalls, and the cutoff point define a blower outlet. The blower outlet defines a blower outlet area. The adjustable cutoff plate is adjustably positioned within the cutout to define a notch defining a notch area. The notch area and the blower outlet area define a total blower outlet area.

A system and method suppresses chattering events in a storage system by determining a suppression level based upon a rate of growth of log files. An event management system of the storage system calculates a histogram and a set of statistics including a mean and standard deviation associated with non-chattering events. A cutoff point is determined for the non-chattering events and is utilized for each received event to determine if the received event is a chattering event. Events determined to be a chattering event are suppressed according to a predefined suppression rate.

The invention relates to illumination layout simulation method and system. The prior art has no simulation design method and system for an illumination system. Accordingly, the illumination layout simulation method comprises the following steps of: 1, drawing a three-dimensional model for each electric light source, at least for the luminescence part of each electric light source; 2, setting uniform and dense points on the surface of the luminescence part of each three-dimensional model, and setting radials outwards from each point along a normal direction, wherein a light ray model of the electric light source is formed by all the radials; and 3, intercepting a corresponding section on the corresponding position of the light ray model according to the shape of a surface (which is not limited to be plane) to be illuminated and a relative position between the surface to be illuminated and the electric light source, wherein a cutoff point is formed on the section by each intercepted radial, and the shape and the position of the section correspond to the surface to be illuminated. The invention can provide real-time, cheap and accurate guidance for illumination designs and is suitable for various lamp enterprises and design and production units of the illumination systems.

The invention discloses a reference waveform selection method based on the joint of primary and secondary envelopes in a cross-correlation method-based gas ultrasonic flowmeter. For the problem of 5 [mu]s layering of a transit time calculation value due to use of a traditional reference waveform when the gas flow speed in a pipeline is relatively high, an improved reference waveform selection method is provided. According to the method, a zero crossing point before the inverse fourth wave peak of the primary envelope of an average waveform is used as a starting point; a zero crossing point after the fourth wave peak of the secondary envelope is used as a cutoff point; a waveform between the starting point and the cutoff point is determined as a standard waveform; the rear end of the standard waveform is filled with zero, so that the number of signal points after zero filling is the same as that of collected signal sampling points when the ultrasonic flowmeter works; and a signal waveform after the zero filling of the standard waveform is determined as a reference waveform. According to the method, the problem of the layering of the transit time calculation value is solved, and themeasurement precision and the repeatability of the gas ultrasonic flowmeter are improved.

The invention provides an online data migration method in support of a heterogeneous timing sequence database, solving the defects of incapability of crossing timing sequence database types, incapability of crossing networks and long application offline time of methods for migrating data through data recovery. The method includes deploying a target database X-DB, determining a time cutoff point, deploying a multichannel data agent, connecting the multichannel data agent to the target database X-DB, setting low priority and temporary disability, storing timing sequence data into a source database and an X-DB operation log, staring a source data and historical data pump to extract a data package from a required starting time to the time cutoff point, compressing and transmitting the historical data package and the operation log, performing historical data recovery by an X-DB data pickup device, performing log registration, creating a log stop identification after all piled logs are transmitted and recovered, interrupting the source database, starting an X-DB node, stopping log creation by the multichannel data agent, and selecting the X-DB database according to configuration rules to switch the target database automatically.

The article describes an entity sequencing system providing input signals of sequence characteristics between data source and entity checking applications. Modes of properties and relations using the entity by the applications can be influenced by the data source according to the provided input signals of the sequence characteristics. New information is allowed to be displayed in ''most relevant priority'' mode and cutoff point is provided in limited space condition. The system scans property modes and value scopes of given entity types, variety of each property / value is identified, and calculation sequence is measured based on a plurality of distances. So the system provides sequence information coming from the data source so as to describe how to sequence the entity attribute, most relevant entity information can be still displayed, and simultaneously applications can be written causally to cope with various types of entities.

An improved signal light and method for making an improved signal light is disclosed. For example, the improved signal light includes a housing, at least one outer lens and at least one or more second type of light emitting diodes (LEDs) deployed in the housing. The at least one or more second type of LEDs includes a pump, a phosphor and a filter having a cutoff point less than or equal to 540 nanometers (nm). The at least one or more second type of LEDs also has a pump peak wavelength less than or equal to 430 nm and has a phosphor with a peak wavelength greater than 575 nm.

The invention relates to a method for the real-time exposure monitoring during the preparation of a holographic grating. The method belongs to the technical field of spectrum and relates to a method for the real-time exposure monitoring during the preparation of the holographic grating. The technical problem to be solved is to provide the method for the real-time exposure monitoring during the preparation of the holographic grating. The technical proposal comprises the following steps: 1, providing with a set of holographic grating exposure device; 2, providing with a set of real-time monitoring device capable of precisely controlling the exposure of the holographic grating; 3, preparing a latent image grating and carrying out the real-time monitoring of the exposure; and 4, determining an exposure cutoff point. The method which introduces the real-time monitoring technology into the exposure process so as to determine the exposure cutoff point is a simple and effective means. The real-time exposure monitoring device can be used for the rapid and precise control on the exposure of the holographic grating, thereby further correctly determining the best exposure cutoff point, and providing scientific theoretic instruction and experiment basis for the holographic grating exposure technology.

According to one embodiment of the present disclosure, a system for translating a boosting algorithm includes an interface communicatively coupled to a processor. The interface is operable to receive a trained boosting model. The processor is operable to identify a plurality of split-node variables associated with the trained boosting model. Each of the plurality of split-node variables comprises a variable name, a cutoff point, and a weight. The processor may aggregate the split-node variables by variable name and cutoff point and then combine the weights of each of the plurality of split-node variables having the same variable name and cutoff point. The processor may then create a linear model based on the combined variables.

The invention provides a method for detecting quantitatively-embedded secret information for DWT domain fidelity compensation. The method mainly comprises the step of initial value setting of a quantifying step size delta, a compensating factor alpha and a DCT series t. According to the method, original voice frequencies are acquired through a network transmission channel, the voice frequency segmentation is conducted on the voice frequencies to be detected according to an L value, limited classic values are selected as the L value, and in the detecting process, all the limited values are sequentially traversed to conduct segmentation detection; DWT transmission is conducted on the segmented voice frequencies, a column diagram is made according to transformed voice frequency coefficients, a transversal line is set according to the values of the longitudinal coordinates in the column diagram, and the transversal line intersects with the column diagram to obtain n cutoff points; the maximum deviation values T between adjacent cutoff points are calculated, and whether the voice frequencies to be detected comprise the secret information or not is judged according to the T values. Through the method for detecting the quantitatively-embedded secret information for DWT domain fidelity compensation, blind detection can be conducted on the voice frequency to be detected by a steganography detection system, the parameter of the secret information in the embedding process does not need to be known in advance, and the detecting problem of the voice frequency comprising the secret information is effectively solved.

The invention provides a non-tracking solar compound paraboloid condenser which comprises a compound paraboloid condenser mirror support, a paraboloid reflection mirror surface support, a plane reflection mirror surface support, paraboloid reflection mirror surfaces, a plane reflection mirror surface, a heat collector, a heat storage tank, a heat diversion tube, a return tube and a horizontal support frame. A conpound paraboloid reflection mirror surface is formed by combining paraboloid condensation curves; according to different non-tracking requirements, two different cutoff points which correspond to total reflection critical angles are selected on a parabolic curve graph and intercepted, a focal point F serves as a fixed point, and a half parabolic segment located in the first quadrant is rotated in the clockwise direction to make an inclined angle between the focal line of the half parabolic segment and the Y axis be equal to 47 degrees; accordingly, the maximum effective daylighting and concentration ratio of the generated non-tracking solar compound paraboloid condenser can reach four times under all fixed conditions; if adjustment is conducted once every year, the maximum effective daylighting and concentration ratio can reach eight times, and if the adjustment is conducted once every month, the maximum effective daylighting and concentration ratio can reach 20 times.

A program structuring device includes a play-list collecting unit that collects a play list for a content in which a time series is defined; a first storage unit that stores cutoff points that appear in the play list and are breakpoints of a program structure of the content, in correspondence with a frequency of appearance of each of the cutoff points; a calculating unit that calculates a level of relevance between scene segments defined by the cutoff points from the frequency of appearance of each of the cutoff points; an extracting unit that extracts multi-level chapter divisions based on the level of relevance; and a second storage unit that stores the extracted multi-level chapter divisions structured into a tree form.

The invention relates to a flight track building method, in particular to a flight track building algorithm based on ARINC424 navigation data. The algorithm comprises the following steps of 1, according to a flight plan, extracting relevant data from an airborne navigation database; sorting the extracted relevant data into a leg linked list according to specified flight segment sequences in the flight plan; 2, respectively calculating the leg cutoff point and the transition leg according to airplane initial state data and the leg linked list obtained in the first step. A general solution scheme aiming at 23 kinds of leg engagement is realized; a smooth complete flight track is automatically generated according to the input flight plan; the obtained result is conformed to a flight chart; the flight track can be accurately predicated; the automation level of a flight management system can be improved; the load of pilots is lightened.

A noise tone occurring at a blade passing frequency in a blower for an automotive HVAC system is suppressed. The blower includes a centrifugal fan and a scroll body disposed around the fan. An outlet extends from the scroll body to conduct an air flow from a cutoff point of the scroll body. An inlet is coupled to the scroll body defining an inlet throat comprising an arcuate ring extending between a base and an annular end coaxially disposed over the fan. A partial-perimeter wall extends upstream from the arcuate ring having a height between about 4% and about 6.5% of an inner diameter of the annular end. The wall spans a perimeter portion of the circumference of the throat between about 120° and about 180°. As a result, noise at the blade passing frequency is suppressed without any significant reduction in air flow.

The invention discloses an undervoltage charging method of a vehicle power battery. The undervoltage charging method comprises the following steps: S1: a BMS (battery management system) conducting power-on self-inspection; S2: judging whether the system works normally, if the system works normally, executing the S3, and if the system does not work normally, skipping to the S8; S3: detecting voltage of each single battery, judging whether the voltage of each single battery is lower than the safety threshold, if the voltage of each single battery is not lower than the safety threshold, skipping to the S8; S4: detecting voltage redundancy, if the voltage redundancy is normal, executing the step S5, and if the voltage redundancy is abnormal, skipping to the S8; S5: detecting voltage of each single battery, judging whether the voltage of each single battery has an undervoltage alarm, if the voltage of each single battery has the undervoltage alarm, executing the S6, and if the voltage of each single battery does not have the undervoltage alarm, executing the S7; S6: entering an undervoltage charging process; S7: entering a normal charging process; and S8: stop charging, the end. The undervoltage charging method solves the charging problem when the voltage of each single battery of the vehicle power battery is lower than the undervoltage cutoff point but higher than safety charging voltage.

A method for calculating the area of chromatographic peaks of a gas in electric power equipment oil relates to the technical field of electric power equipment detection, and can solve a technical problem of the increase of the calculating precision. The method comprises the following steps: drawing a chromatographic curve of the gas in transformer oil, calculating the chromatographic starting point value, the cutoff point value and the peak maximum height value according to the beginning and ending time points and the smooth time length of the chromatographic curve, and calculating according to a peak processing function to obtain the chromatographic peak area of the chromatographic curve of the target gas. The method is suitable for detecting the content of the gas in the transformer oil.

The invention relates to a device for ultrasonic welding comprising at least one generator, a converter and a sonotrode, based on a theoretical curve (10 ), a method for ultrasonic welding of parts, especially rope welding, in which the welding process consistent with the theoretical curve starts at time t 0 and the end time t e in between. In order to obtain good welding results reproducibly, it is recommended to measure the actual curves (16, 18) of the time-dependent parameters during welding, where at t 0 and t e In the intervening time intervals, the actual curve is compared with the target curve, and at least one welding-influencing process parameter is changed in accordance with existing deviations, so that an adaptation of the target curve to the actual curve takes place during the subsequent welding.

The invention discloses a data packet transmission and scheduling method and a device based on interactive slope comparison, which belong to the field of wireless communication. The method comprises steps: starting from the beginning of a transmission section, arrival slopes of data packet arrival points are calculated according to a time sequence, cutoff slopes of data packet cutoff points are calculated, and the minimal arrival slope and the maximal cutoff slope rmax are updated; when detected to be smaller than or equal to the rmax, the former one of corresponding time in the rmax is the transmission rate of the transmission section, the arrival point or the cutoff point of the corresponding data packet is the beginning of a next transmission section; according to the above process, each transmission section and the transmission rate thereof are found out sequentially; and according to the obtained transmission sections and the transmission rates, data packet transmission is carried out. Compared with the prior art, the data packet transmission and scheduling method based on interactive slope comparison can realize the lowest energy consumption transmission.

The invention relates to the field of nuclear magnetic resonance image processing, in particular to an image intensity standardization method for a brain FLAIR nuclear magnetic resonance image. The method comprises the following steps: searching a cutoff point on a gray histogram of a FLAIR image, marking voxels with gray values greater than the cutoff point, enabling the voxels not to participatein linear standardization operation, and performing standardization operation on voxels with intensity values less than the cutoff point; through determining a proper truncation point position and carrying out linear normalization, realizing standardization processing of image intensity. According to the method, no matter how many peak values exist in the histogram, only the highest peak value isconcerned, so that the standardization steps are simpler.

The invention relates to a method and a system for adjusting signal wires, applied to wiring software of print circuit boards. Two signal wires to be changed are selected, the attribute data of the connective ports on the two ends of each signal wire is read, a first cutoff point is got from the tangent point of a circle fixed by a circle centre which is one connective port defined as a first connective port at the same end of the two single wires and a signal wire connected with the other connective port defined as a second connective port; the second connective port is used as a point outside the circle to generate a tangent which is tangent with the circle and intersect with a single wire connected with the first connective port, thus getting a second cutoff point; based on the first and second cutoff points, the line segments between the two ends and the cutoff lines are deleted, the connective ports are changed, and automatically connected to the line segments of the cutoff points of original signal wires, the wiring width of the signal wires is adjusted according to the attribute data of the changed connective ports, thus improving the adjusting efficiency of signal wire wiring sequence and the correction rate of wiring operation.

The invention discloses a coded optical modulation disc with improved resolution, which belongs to a dimming device involved in the technical field of photoelectric guidance. The technical problem to be solved is to provide a coded optical modulation disc with improved resolution. The technical solutions to be solved include substrate, circular grating, inner code track and outer code track. The circular grating is located at the innermost circle of the light modulation disc. The coding of the inner and outer code tracks all accounts for 180°, and the starting point of the inner code track and the starting point of the outer code track differ by 90°. Both the inner and outer code tracks adopt four sets of codes, and each pair of coded planes in each group is parallel to each other and equally spaced straight lines after being unfolded. The first group of 20 pairs of codes is used at the starting point of the inner code track, and the second group of 35 pairs of codes is used at the end point. The third group of 5 pairs and the fourth group of 6 pairs of codes are filled in the track gap clockwise. The cut-off points of the two groups of codes filled in the middle of the two code tracks of the optical modulation disc are continuous, and the guidance precision is high.