1035 results about "Wave trough" patented technology

An article of footwear including an upper and a sole assembly secured to the upper and including a support assembly having an upper member and a lower member spaced from the upper member. A first layer is positioned beneath and in contact with the upper member and has a wave shaped profile with a plurality of first wave crests and first wave troughs. A second layer is positioned above the lower member and has a wave shaped profile with a plurality of second wave crests and second wave troughs.

An article of footwear including an upper and a sole assembly secured to the upper and including a support assembly having an upper member and a lower member spaced from the upper member. A first layer is positioned beneath and in contact with the upper member and has a wave shaped profile with a plurality of first wave crests and first wave troughs. A second layer is positioned above the lower member and has a wave shaped profile with a plurality of second wave crests and second wave troughs.

An ocean wave energy device uses large gas filled and surface vented or evacuated flexible containers having rigid movable ends and rigid fixed depth ends connected by flexible bellows, suitably reinforced against external hydrostatic pressure, submerged to a depth below anticipated wave troughs. One or more containers compress and expand as waves and troughs, respectively, pass overhead driving hydraulic or pneumatic, pumping means producing pressurized fluid flow for a common sea bed motor-generator or for other uses or on-board direct drive generators. Mechanical, hydraulic or pneumatic means re-expand said containers when a wave trough is overhead. Power output is augmented by mechanically connecting said rigid moving surfaces to surface floats, which may also provide said surface vent such that as waves lift and troughs lower said floats, said containers are further compressed and re-expanded, respectively. Depth fixing and adjustment means for tides and sea-states are provided.

The invention discloses a prediction and evaluation technology of 3D seismic optimum time window river channel sand body reservoirs, belongs to the technical field of the prediction and evaluation of the 3D seismic reservoirs, and aims at solving technical problem that the river channel predictive resolution of the traditional methods is not enough. The technical proposal is as follows: the 3D visualization scanning is performed on each reservoir at the interval of 1-2ms, the optimum time window is determined according to the scope shown by the target river channel, the corresponding subfield is cut out, clairvoyance and scanning are carried out on the time window properties, such as root-mean-square amplitude, wave impedance and the like, auto-tracing is performed, top surface and bottom surface are picked up, a time isopach map is calculated and converted into a sand body isopach map, a top surface structure diagram is formed by time-depth conversion, and the reservoir physical properties are evaluated by curve reconstruction, thus realizing the prediction and evaluation of the plane morphology, longitudinal thickness and the reservoir physical properties of the river channel sand body. The method adopts the optimum time window to effectively inhibit interference, is applicable to various data volumes, and can effectively predict and evaluate a thin river channel sand body with the thickness far less than 1 / 4 of a wavelength under the condition of frequent interbedding of sand and mudstone, the thin river channel sand body comprises the river channel sand body which is not corresponding to wave crest or wave trough, and the method has good application effect in petroleum exploration and development.

The embodiment of the invention discloses a gait recognition method and a corresponding pedometer. The gait recognition method comprises the following steps: acquiring acceleration signals during wrist movement, wherein the acceleration signals comprise a first sensitive shaft signal and a second sensitive shaft signal; selecting one of the first sensitive shaft signal and the second sensitive shaft signal as the current gait recognition signal according to the moving state of the previous gait; determining whether the current gait is complete or not by judging the conversion between a wave peak section and a wave trough section of the current gait recognition signal based on the dynamic threshold value preset for the previous gait. The gait recognition method is capable of effectively recognizing running and other walking modes, thus improving the step-counting accuracy.

The invention discloses a spiral waveform cutting metal wire as well as a manufacturing method and equipment thereof. The metal wire is a spiral waveform metal wire formed by rotating a periodic waveform metal wire along an axial center line, a wave crest and a wave trough of the metal wire are distributed along the axial center line, and a spiral diameter of the metal wire is equal to a wave height. The spiral waveform cutting metal wire disclosed by the invention can provide better mortar abrasive carrying capability in the process of cutting a rigid material through a stereostructure of the spiral waveform cutting metal wire, and the abrasive is not easily stripped from a cutting wire, therefore, the production speed and efficiency of technical processing of cutting and slicing silicon materials, precious stones and the like are greatly improved, and the surface quality of the sliced materials can be also improved.

The invention discloses a micro-fluidic chip for multi-index detection. The micro-fluidic chip comprises a substrate and a cover plate which is matched with the substrate in a sealed mode, wherein a through hole is formed in the center of the micro-fluidic chip; one or more wave-shaped main channels are formed in the substrate; one end of each main channel is communicated with a sample introduction hole formed in the substrate, and the other end of each main channel is communicated with an air outlet in the substrate; wave troughs of the main channels are arranged away from the direction of the through hole; wave crests of the main channels are arranged close to the direction of the through hole; any one wave trough of the main channel is communicated with a reaction pool through a connecting pipeline; a buffer pool is arranged on the connecting pipeline. The micro-fluidic chip can be detected by instruments through fluorescence, turbidity and development or is directly observed by naked eyes, can be detected in the reaction process in real time and also can be detected after the reaction is ended.

The invention discloses a method for controlling brittleness Laves phases in the laser additive manufacturing process of a nickel-based high-temperature alloy. Firstly, laser additive manufacturing technological parameters are initially optimized, and a cooling medium is adopted for cooling the bottom of a base material; then a laser modulation technology is used for modulating a laser source, and superior laser modulation parameters are obtained, wherein the peak power of square waves ranges from 600 W to 1000 W, the pulse frequency of the square waves ranges from 10 HZ to 100 HZ, and the duty ratio of the square waves ranges from 0.3 to 0.6; the wave peak power of sawtooth waves ranges from 600 W to 1200 W, the wave trough power of the sawtooth waves is 0 W, and the pulse frequency of the sawtooth waves ranges from 10 HZ to 100 HZ; and according to the parameters of sine waves, the wave peak power ranges from 600 W to 1000 W, the wave trough is 0 W, and the pulse frequency ranges from 10 HZ to 100 HZ; and finally, laser additive manufacturing and forming of the nickel-based high-temperature alloy are conducted according to the above parameters, and a formed part with all small equiaxial dendritic structures and small discrete Laves phases is obtained. By means of the laser modulation method, the precipitation behavior of the Laves phases in the laser additive manufacturing process of the nickel-based high-temperature alloy can be effectively controlled, the cracking sensibility of parts obtained through laser additive manufacturing is reduced, and the microstructure is improved.

The invention belongs to the field of image processing, and discloses a video monitoring method of an electric transmission line. The video monitoring method of the electric transmission line comprises the steps of greasy weather grade recognition, ice covering / snow covering recognition, conductor galloping recognition and periphery alarm. In the step of greasy weather grade recognition, vector included angle characteristics are extracted, and a support vector machine is selected and used for classification. In the step of ice covering / snow covering recognition, the ice covering / snow covering thickness is measured through image processing technologies such as image segmentation, edge detection and improved Hough conversion. In the step of conductor galloping recognition, multiple wave trough points and wave crest points in a conductor are detected, the lowest point and the highest point of conductor galloping are obtained by comparing all the wave trough points and all the wave crest points, and then amplitude and frequency of conductor galloping are computed. In the step of periphery alarm, a method of updating backgrounds automatically is adopted, influence of noise is greatly reduced in the process of judging foreign matter, and whether the foreign matter enters a monitoring area or not is judged in a percentage mode. The video monitoring method achieves video monitoring on the electric transmission line under the atrocious weather environment.

The invention discloses a waveform peak and trough identifying method with self-adapting threshold and a device thereof. The identifying method comprises following steps: A1. multilevel amplitude thresholds are set up, including a smallest amplitude threshold Ymin, a largest amplitude threshold Ymax, a threshold step length S and a threshold level N, N equals to the result of Ymax subtracted by Ymin then divided by S, and finally added by 1, and the nth level amplitude threshold Yn equals to Ymin added by the result of n subtracted by 1 and then multiplied by S; B1. information of local wave peaks and local wave troughs in the waveform is searched; C1. a threshold of vibration amplitude of the local wave peaks or the local wave troughs is determined, and if the vibration amplitude of the local wave peaks or the local wave troughs is more than a certain amplitude threshold, the vibration amplitude is taken as a threshold wave peak or a threshold wave trough of the amplitude threshold in the level; D1. vibration amplitude threshold and time threshold of the threshold wave peaks and the threshold wave troughs are determined, and effective wave peaks and effective wave troughs are determined. The waveform peak and trough identifying method with self-adapting threshold and the device thereof have high wave form identifying rate, improved disturbance resisting capacity and increased clinical limitation of wave trough identification, and is fit for real clinical situations.

The invention relates to a detection and control system for a container corrugated plate welding track based on laser ranging, comprising a laser displacement sensor, a welding torch pose adjusting device and a circuit control device. The laser displacement sensor and the welding torch pose adjusting device are connected with the circuit control device through a circuit; one end of a welding torch space position and pose adjusting mechanism is fixed on a stand; and the laser displacement sensor is arranged at the lower end of the welding torch space position and pose adjusting mechanism. Through the diction of the corrugated plate welding line, the control of the welding torch pose and the automatic control of the welding process, the invention achieves the effect that the thickness of welding lines of a downslope welding section from a wave crest to a wave trough, a upslope welding section from a wave trough to a wave crest, a wave crest tangential path and a wave trough are consistent, remarkably improves the uniformity of welding lines of each welding section, greatly reduces the labor intensity of workers, reduces the manual expense of production and is fast and convenient to adjust parameters. The welding speed is more than three times of general manual welding or profile modeling welding, and automatic control is available in the whole process.

The invention relates to a method for determining the development position of a fractured-vuggy carbonate reservoir, which comprises the following steps: carrying out fine calibration on the fractured-vuggy carbonate reservoir by using the three-dimensional conventional seismic data of great deserts; and carrying out color filling and waveform display on a wave trough and a wave crest by using a seismic-section display method, wherein the color filling is performed according to the vibration amplitudes of the seismic wave trough and the seismic wave crest; and after a wiggle variable area display mode is selected, and determining the transverse development position of the fractured-vuggy carbonate reservoir and the variation situations of the fractured-vuggy carbonate reservoir through observing the waveform changes corresponding to the fractured-vuggy carbonate reservoir calibrated on a seismic profile and the color change relations after the area is changed, wherein same waveform and same filled color after the area is changed instruct a same physical development zone of the reservoir. By using the method of the invention, the development position of the fractured-vuggy carbonate reservoir can effectively be determined, the design on horizontal well paths is guided in actual applications, and all completely-drilled horizontal wells can produce high-capacity oil-gas flows.

The invention relates to a screw fastener comprising a threaded shank having a force application means for torque transmission and a screw fastener point. The threaded shank consists of a shank core and a self-tapping thread, and the thread is designed as a prominence which runs helically over the shank core, is defined by two flanks meeting in an outer thread edge and has a radial height (H). The outer thread edge, at least in a section of the thread, runs in a wavelike manner in the radial direction with an amplitude between wave crests having the height (H) and wave troughs having a height (h) reduced by the amplitude. The thread, at least in the region of one of its flanks, has niches in the region of the wave troughs of the thread edge, which niches interrupt the surface of the flank and their outer boundary is the thread edge, the thread in each case having a certain first apex angle (α), formed between the flanks, in those regions of the wave crests of the thread edge which are not interrupted by niches and a second apex angle (α′) in the deepest regions of the wave troughs of the thread edge. The first apex angle (α) between the flanks is approximately within the range of 30° to 35°, the second apex angle (α′) being 30° up to at most 58°.

The invention relates to a device for detecting the welding track of a corrugated plate of a container based on laser ranging, which comprises a laser displacement sensor and a welding gun position and posture adjusting device; one end of the welding gun spatial position and posture adjusting mechanism is fixed on a stand; the laser displacement sensor is arranged at the lower end of the welding gun spatial position and posture adjusting mechanism; and the laser displacement sensor and the welding gun position and posture adjusting device are connected with a circuit control device through circuits. Through the detection of a weld joint of the corrugated plate, the control of the position and the posture of the welding gun and the autocontrol of a welding process, the device achieves the effect of thickness consistency among downhill welding sections between wave peak and wave trough of the corrugated plate, an uphill welding section between the wave trough and the wave peak and a linear section of the wave peak and a linear section of the wave trough, remarkably improves the welding evenness of each welding section, greatly reduces the labor intensity of laborers, has rapid and convenient parameter adjustment and reduces the labor cost of production. The welding speed is more than three times of that of common manual welding or contour welding; and the whole process is automatically controlled.

The invention disclose a step-counting processing system and method, and the step-counting processing system comprises an acceleration sensing unit, a discrimination unit, a computing unit, an analyzing unit, and a step-counting unit; and the step-counting processing system is used for sensing the acceleration signal generated by the upper and down body vibration during the human walking course, and the projection operation of the sensed acceleration signal at the gravity direction is conducted, in order to obtain the waveform of the component of the acceleration signal generated at the vertical direction during human body walking, meanwhile, whether the waveform characteristic of the component of the acceleration signal generated at the vertical direction is continuous wave peaks and wave troughs is analyzed, and the analyzed result serves as the basis that whether cumulative steps are conducted, thereby achieving the purpose of refined calculation of walking steps for human body.

The invention relates to the technical field of computer application, specifically, relates to a heart sign obtaining method and a heart sign obtaining device. The heart sign obtaining method comprises the steps of: obtaining photoplethysmography (PPG) data; performing low-pass filtering processing with cut-off frequency less than or equal to 4 HZ on the PPG value and removing high-frequency noise; performing discrete wavelet filtering processing on the PPG value subjected to high-frequency noise removal and correcting baseline drift; obtaining the wave crest and wave trough positions of PPG waveform according to the PPG data subjected to baseline drift correction, and obtaining the time interval value between the wave crests according to the wave crest and wave trough positions and the sampling rate of the PPG data; obtaining RR interval data according to the time interval value between the wave crests, and calculating the heart sign according to the RR interval data. By adoption of the method and the device, a user can comprehensively obtain the heart sign value.

An ocean wave energy device uses large gas filled and surface vented or partially evacuated flexible containers each having rigid movable ends and rigid fixed depth ends connected by flexible bellows, suitably reinforced against external hydrostatic pressure, submerged to a depth below anticipated wave troughs. One or more said containers compress and expand as waves and troughs, respectively, pass overhead driving hydraulic or pneumatic, pumping means producing pressurized fluid flow for a common sea bed motor-generator or for other uses or on-board direct drive generators. Mechanical, hydraulic or pneumatic means re-expand said containers when a wave trough is overhead. Power output is augmented by mechanically connecting said rigid moving surfaces to surface floats, which may also provide said submerged container venting such that as waves lift and troughs lower said floats, said containers are further compressed and re-expanded, respectively. Power output is further augmented by wave kinetic energy capture through focusing, reflection and refraction.

A corrugate fin of an evaporator includes wave crest portions, wave trough portions, and flat connection portions connecting together the wave crest portions and the wave trough portions. Opposite end portions of a cutout extend to corresponding connection portions located at opposite ends of the wave crest portion and the wave trough portion. A projection projecting inward is formed integrally with end portions of the connection portions, the end portions of the connection portions corresponding to opposite ends of the cutout. The projection extends between the end portions of the connection portions located at the opposite ends of the wave crest portion and the wave trough portion. The projection projects inward in a shape resembling a lying letter V. The evaporator exhibits excellent drainage of condensed water and enables high work efficiency in manufacture thereof.

To provide a lumen-friendly, flexible stent which is excellent in trackability to lumens (thus, it is able to pass through the three-dimensionally meandering lumens), substantially free from shortening (shortening of the length), uniformly expandable.A stent according to the present invention comprises radially expandable annular members (1) which are aligned in a longitudinal direction of the stent, and one or more coupling elements (2) that couple adjoining two annular members (1) in the longitudinal direction of the stent, wherein said annular member comprises first annular member elements (11) and second annular member elements (12), which have a plane symmetrical pattern and are alternately connected in the circumferential direction of the annular member, and wherein under the condition that the stent is unfolded onto a plane, the first annular member element (11) includes one wave mountain, while the second annular member element (12) includes one wave trough, the adjoining two annular members being connected between the junctions which connect the first annular member elements (11) and second annular member elements (12) of the respective annular members.

The invention discloses a high-precision gas concentration detection method and a detection apparatus thereof. The detection method comprises the following steps: a current is input to a laser drive circuit; a laser is driven by the laser driving circuit to emit a laser signal, and the laser signal passes through a detected gas in a gas chamber; a photoelectric detector receives a laser signal output by a relevant gas in the gas chamber after absorption, implements photoelectric detection, converts the laser signal to a voltage signal and inputs the voltage signal to a detection filter unit; a signal output by the detection filter unit implementing band-pass filter processing is divided into two paths, one path goes through a lock-in amplifier circuit to obtain a secondary harmonic signal, and the other path goes through an RMS conversion circuit to obtain an RMS signal; sampling is carried out, and the wave peak value Vpp max, the wave trough value Vpp min and the RMS are calculated; and a data processing unit calculates the concentration X of the gas to be detected. The gas concentration detection method can be used to accurately measure the concentration of the gas, and can eliminate the influences of a circuit and the change of light transmittance on the measurement of the concentration of the gas in order to improve the detection accuracy.

A heat exchanger assembled from multiple heat exchanging tubes. Each of the multiple heat exchanging tubes is formed as a flattened tube of 0.5 mm in thickness by press work or bending work of a stainless steel plate member having a thickness of 0.1 mm. Each of the multiple heat exchanging tubes is structured to have multiple lines of sequential wave crests and multiple lines of sequential wave troughs formed on each of flattened faces of the heat exchanging tube. The multiple lines of the sequential wave crests and the multiple lines of the sequential wave troughs are arranged to have a preset angle γ relative to a main stream of an air flow. The lines of the sequential wave crests and the lines of the sequential wave troughs are symmetrically folded back about folding lines arranged at a preset interval W along the main stream of the air flow.

The invention discloses a method for detecting a bridge impact coefficient based on a dynamic load test. The method comprises the steps of: (1) detecting and recording deflection data of a bridge; (2) drawing a deflection schedule curve of the bridge; (3) obtaining a bridge impact coefficient muij corresponding to each pair of adjacent wave peak value Xij and wave trough value Yij on the i-th deflection schedule curve of the bridge; (4) obtaining a bridge impact coefficient mui corresponding to a vehicle speed vi; (5) repeating the step (3) and the step (4) until n bridge impact coefficients mu1, mu2, ...mun corresponding to n different vehicle speeds v1, v2, ...vn are obtained; and (6) obtaining a bridge impact coefficient mu. The method for detecting the bridge impact coefficient based on the dynamic load test, disclosed by the invention, has the advantages of rational design and convenience in realization; the bridge impact coefficient obtained by detection is safer, so that dynamic effect of the bridge structure can be reflected more exactly and more rationally under the function of the load of movable vehicles; the practical problem that the conventional impact coefficient cannot reflect exactly that the movable load acts on the bridge structure in form of multiple load points is solved efficiently; and the method for detecting the bridge impact coefficient based on the dynamic load test, has strong practicability and high popularization and application values.

The invention provides a color image segmentation algorithm based on histograms. The method includes the following steps that firstly, the color image RGB three-component histograms are counted and preprocessed respectively, so that the waveforms of the histograms are kept as smoother as possible; secondly, the histograms are searched for wave troughs through a wave crest and wave trough quick positioning algorithm, and the wave troughs serve as threshold values so that the histograms can be divided into multiple levels; thirdly, the divided histograms are combined again, a new histogram is established again, the histograms are searched for the wave troughs through the wave crest and wave trough quick positioning algorithm again, the histogram is divided into multiple levels, and then an initial clustering center is determined; finally, super-pixels are extracted by segmenting a color image in advance, segmentation areas serve as sample data, and the sample data are clustered in a fuzzy mode according to the determined clustering center. According to the color image segmentation algorithm, execution efficiency and clustering performance of a color image fuzzy clustering algorithm are effectively improved, and effectiveness of the algorithm is verified through running time and PRI indexes.

An insert adapted to connect to opposite walls in a heat exchanger tube, including a corrugated sheet having alternating wave crests and wave troughs connected by wave flanks having openings therein, wherein at least some of the wave crests have a length different than the length of the wave troughs, and / or adjacent sections have different wavelength waves. Such inserts may be produced by transporting material sheets through a press, where the sheet feed rate and / or the press stroke speed may be selectively varied.

The present invention provides a fingerprint identification device, a touch display panel and a control method of fingerprint identification and belongs to the display technical field. With the fingerprint identification device, the touch display panel and the control method of fingerprint identification adopted, the problem that an existing liquid crystal display is difficult to accurately identify fingerprints can be solved. The fingerprint identification device of the invention comprises a photoelectric sensor and an optical waveguide structure; the optical waveguide structure comprises a dielectric material and a waveguide material which are arranged vertically and alternately; after entering the waveguide material, light is subjected to total reflection at the interfaces of the dielectric material and the waveguide material, and then the light is transmitted to a surface of the waveguide material, wherein the surface of the waveguide material is far away from a touch substrate; if the wave troughs of fingerprints contact with the surface, air is located in the troughs, and the light is totally reflected back to the photoelectric sensor, so that the photoelectric sensor can identify the reflected light; if the wave ridges of the fingerprints contact with the surface, light at the wave ridges is subjected to diffuse reflection and will not be identified by the photoelectric sensor; and therefore, the identification difference values of the light at the wave ridges and the wave troughs can be improved, and the accuracy of the photoelectric sensor in the identification of the wave troughs and the wave ridges can be improved. The fingerprint identification device of the present invention is applicable to various display devices.

The invention relates to a screw fastener comprising a threaded shank having a force application means for torque transmission and a screw fastener point. The threaded shank consists of a shank core and a self-tapping thread, and the thread is designed as a prominence which runs helically over the shank core, is defined by two flanks meeting in an outer thread edge and has a radial height (H). The outer thread edge, at least in a section of the thread, runs in a wavelike manner in the radial direction with an amplitude between wave crests having the height (H) and wave troughs having a height (h) reduced by the amplitude. The thread, at least in the region of one of its flanks, has niches in the region of the wave troughs of the thread edge, which niches interrupt the surface of the flank and their outer boundary is the thread edge, the thread in each case having a certain first apex angle (α), formed between the flanks, in those regions of the wave crests of the thread edge which are not interrupted by niches and a second apex angle (α′) in the deepest regions of the wave troughs of the thread edge. The first apex angle (α) between the flanks is approximately within the range of 30° to 35°, the second apex angle (α′) being 30° up to at most 58°.

The invention discloses an all-fiber magnetic field sensor. The sensor is composed of a broadband light source, a sensing head and a spectrometer, wherein two ends of one section of a photonic crystal fiber with magnetic fluid poured in are welded with a single-mode fiber to form the sensing head, one end is melted eccentrically, a Mach-Zehnder interferometer with single fiber embedded is formed, changes of phase differences among different modes are caused through changes of the reflection rate of the magnetic fluid in the photonic crystal fiber, spectral shift is thus caused, the shift amount of a wave crest / a wave trough is detected to demodulate magnetic field information, and measurement on the magnetic field is realized. The all-fiber magnetic field sensor is compact in structure, small in size, simple in manufacturing, stable and reliable in operation, high in sensitivity and low in cost.

The invention belongs to the technical field of wireless communications and provides a differential Manchester decoding circuit and method. The circuit comprises: a waveform conversion unit for sampling a received square wave signal to obtain a high level or a low level and performing computing operations of different types on a sampling counter to convert the square wave signal into a triangular wave signal; a signal judgment unit for judging the high and low levels of the triangular wave signal by use of a preset high level threshold and a preset low level threshold, respectively, and recovering decoding clock and intermediate data by judging the wave crests and the wave troughs of the triangular wave signal; and a data decoding unit for performing twice sampling on the intermediate data with the decoding click and performing EXCLUSIVE OR processing on the sampled data to obtain decoded data. The differential Manchester decoding circuit is capable of eliminating the influence of clock skew by virtue of self-addition and self-subtraction of the sampling counter, and is simple in circuit structure and low in error code occurrence rate.