81 results about "Wave form" patented technology

The invention relates to the technical field of laser, and provides a laser system with a controllable pulse state and a control method thereof. The control method of the laser system with the controllable pulse state comprises the steps that under the conditions that the cavity length of an FP cavity is in an initial fit state and the air pressure in the FP cavity is standard air pressure, a pump light source is controlled to adjust the pump power according to a first set; in response to the fact that the target pulse interval is smaller than the initial pulse interval, the pump light source is controlled to keep the target power unchanged, the air pressure of the FP cavity is adjusted to be within the preset range, and the cavity length of the FP cavity is adjusted through a second set; determining a target cavity length; controlling the laser to be output in a first pulse state; and controlling the laser to output in a second pulse state. According to the control method, the controllably generated abnormal wave form with the high peak power is introduced according to the preset frame structure to serve as a physical layer disturbance or random segment, and the reliability and safety of system signal transmission are improved under the condition that data segment transmission is not affected.

The present disclosure provides a QRS wave form detection method and system based on electrocardiogram QRS wave position, relates to the technical field of electrocardiogram signal processing, and comprises the following steps: acquiring electrocardiogram data to be detected, and pre-processing the electrocardiogram data; identifying the start and end point positions of QRS waves in the electrocardiogram data, and intercepting the QRS wave segments corresponding to all the identified QRS wave start and end point positions; performing a shift operation on the QRS wave segments to record the QRS wave data positions, sequentially numbering, then cutting the QRS wave data according to the recorded position data points and the front and rear two position data points, calculating the absolute value of the cut QRS wave data, taking the maximum value, and judging the current QRS wave form according to a threshold value; and the present disclosure can improve the efficiency of QRS wave form detection.

The application discloses a sound source accurate positioning method based on an acoustic sensor array, and comprises the following steps: step one, inputting an audio segment and capturing the audio segment through an acoustic sensor; step two, making an audio image, that is, making a waveform image of the input audio; step three, acquiring a characteristic waveform, that is, cutting the waveform image to intercept a sound waveform that changes; step four, waveform analysis, that is, analyzing the intercepted waveform image and the input audio segment to obtain characteristic information contained in the audio; and step five, characteristic information analysis, that is, analyzing the information characteristic obtained in step four. In the implementation of the scheme, the characteristic in the audio segment is analyzed, the characteristic value is anchored, and then the array sound source is analyzed through the characteristic value, so that the characteristic value can be quickly and accurately positioned, the comparison range is reduced, the comparison judgment speed is accelerated, and the result accuracy is improved.

This invention provides a washing machine, an automatic dispenser, and a control method thereof. The automatic dispenser uses an ultrasonic generator to emit ultrasonic waves; an upper reflective surface is located above the nozzle; an oblique reflective surface is located below the nozzle. After passing through the oblique reflective surface, the ultrasonic waves form an upward-propagating wave, and after passing through the upper reflective surface, they form a downward-propagating wave. The upward and downward waves superimpose to form a standing wave. The vertical distance between the ultrasonic generator and the upper reflective surface satisfies the resonant cavity condition. The nozzle is located at the acoustic pressure node of the standing wave. The controller acquires the droplet mass that the maximum acoustic levitation force of the ultrasonic wave can support, obtains the dispensing mass, and calculates the target number of dispensing droplets based on the droplet mass that the maximum acoustic levitation force of the ultrasonic wave can support and the dispensing mass. When the counting detector detects that the number of droplets has reached the target number, the nozzle is controlled to stop dispensing droplets. This invention is based on acoustic levitation technology, has a relatively small error, and high dispensing accuracy, offering significant advantages for dispensing concentrated liquids.

The invention provides a ground material type detection method and equipment, which can be applied to the technical field of autonomous mobile equipment. The method comprises the following steps: transmitting ultrasonic waves to the ground, and receiving echoes of the ultrasonic waves to obtain an echo waveform diagram; the longitudinal axis of the echo waveform diagram is positively correlated with the echo intensity, and the transverse axis of the echo waveform diagram is positively correlated with the time; identifying wave troughs in the echo waveform graph; determining the number of echo groups in the echo waveform diagram according to the wave troughs; and determining a ground material type according to the number of the echo groups. The ground material type is detected through the number of the echo groups of the ultrasonic waves, and the detection accuracy of the ground material type can be improved. Moreover, only one ultrasonic sensor is needed to detect the type of the ground material, the occupied space is small, and the cost of the autonomous mobile equipment is reduced.

The application discloses a pig drinking water container and application thereof, which comprises a flexible material layer with a leakage prevention function and a wave form control mechanism, and the wave form control mechanism is used for controlling the flexible material layer to switch to a bowl-shaped structure and a cap-shaped structure as required. The pig drinking water container can be applied in pig feeding and pig welfare. By adopting the scheme of the application, the bowl-adhered residual substances can be smoothly, quickly and effectively discharged without using a water source or an air source, the drinking water container can be kept dry and clean at all times within a specified time period, the pig drinking water is effectively combined with the pig welfare interest play, the drinking water container can be flexibly switched to various different shapes for the pigs to play, the drinking water container can be alternatively used as a feeding trough and a drinking trough, and the pig drinking water container is diversified in functions.

In one embodiment, an interconnect apparatus (e.g., an interposer apparatus) includes a plurality of interconnect probes that each include a wave spring structure that includes a plurality of stacked wave spring discs. The wave spring discs may be formed in a sinusoidal wave form shape, or in another wave form shape.

The invention relates to the field of power cable fault monitoring, and discloses an intelligent chip-assisted cable fault accurate positioning system and a cable. The system comprises a test host and micro-control nodes distributed along the cable; the system is provided with a pulse receiving and transmitting module, a reference acquisition module, a centroid extraction module, a wave velocity calibration module, a dynamic windowing module and a positioning calculation module, and a micro-control node is pre-implanted in the cable. The system constructs a local physical baseline to obtain a centroid timestamp and calculate a real-time local wave velocity, intercepts reflected wave characteristics in combination with a dynamic integral time window, and synthesizes absolute position coordinates of a target. Absolute time synchronization errors among distributed nodes are eliminated by constructing a local physical baseline, and a dynamic windowing mechanism is utilized to adapt to wave velocity change and waveform dispersion caused by aging of a cable medium, so that the problem of feature extraction instability caused by a fixed window is solved, and the absolute precision of fault positioning is improved.

The invention discloses a closed-loop adaptive editable group wave generation method based on algorithm driving, and the method comprises the steps: obtaining a to-be-generated target oscillogram, carrying out the digital processing and data fitting, and extracting a feature parameter set of a target waveform; based on waveform characteristic parameters, algorithm modeling and an optimization algorithm are adopted to calculate generation control parameters of each waveform, waveform generation is achieved by controlling a semiconductor switch of a waveform generation circuit, and it is ensured that the output waveform is highly matched with the target waveform. Characteristics of output waveforms are collected in real time through a high-speed digital signal processing module, and control parameters are generated through self-adaptive feedback correction waveforms according to errors between data collected in real time and target waveforms, so that precision and stability of the output waveforms are guaranteed. According to the method, the waveform generation process can be optimized in real time in a dynamic environment through a closed-loop adaptive mechanism, the performance of a group wave generation system is remarkably improved, and the method is particularly suitable for high-precision waveform generation and test application.

The present application relates to gear machining technical field, especially a kind of variable tooth thickness modification machining method for double lead worm gear and worm, including the wave form distortion rate of idle cutting force of hobbing cutter and torsional stiffness coefficient;Real-time monitoring cutting force wave form distortion rate and tool torsional deformation, calculate disturbance intensity index to divide disturbance level and set detection opportunity;Through the tooth thickness curve of actual measurement, tooth thickness change rate coefficient is obtained to judge machining quality;The tooth thickness deviation curve of unqualified tooth groove is analyzed to determine the dominant interference type, and the spindle speed or tool pose is regulated based on disturbance level;The control effect is verified by attenuation coefficient;When not up to standard, attenuation difference is used to optimize control coefficient;Finally, the overall quality of worm is evaluated by the consistency coefficient of tooth thickness change rate of each tooth groove of full tooth surface.The present application solves the problem that the full tooth surface consistency of formed worm is low due to the resonance and deformation disturbance of asymmetric characteristics of hobbing cutter in variable tooth thickness worm machining.

The application relates to an anchor rod length detection auxiliary device and an anchor rod structure. The application is suitable for the technical field of anchor rod quality detection. The application aims to solve the technical problem of providing an anchor rod length detection auxiliary device and an anchor rod structure. The application adopts the technical scheme that the anchor rod length detection auxiliary device comprises a concave end cap, the concave end cap can be installed at the rock-entering end of the anchor rod, the concave end cap is made of polyethylene, and the interface between the concave end cap and the rock-entering end of the anchor rod can facilitate the emergence of a reflected wave form.

The utility model relates to the technical field of corrugated beam steel guardrail installation, in particular to an auxiliary tool for installing a corrugated beam steel guardrail. According to the technical scheme, the auxiliary tool for installing the corrugated beam steel guardrail comprises a guardrail hoisting and adjusting assembly and further comprises a pushing tool car. A pushing tool car is arranged on one side of the guardrail hoisting adjusting assembly; the guardrail hoisting adjusting assembly comprises a servo motor, an angle adjusting block, an arc-shaped connecting shaft, a corrugated beam steel placing frame, an air cylinder back plate, a clamping air cylinder, an anti-slip strip and a pneumatic rod. The corrugated beam steel guardrail penetrates through the holes in the corrugated beam steel placing frames to be fixed, then the servo motor drives the angle adjusting block and the arc-shaped connecting shaft to rotate, and therefore the relative horizontal inclination angle of the two corrugated beam steel placing frames is driven to achieve the guardrail positioning and adjusting function.

The application relates to the technical field of medical devices, in particular to an oscillation mixing device, a sample analysis system and a control method thereof. The oscillation mixing device comprises an oscillation assembly, including an oscillation turntable, an oscillation base, an oscillation support arranged on the oscillation base and capable of reciprocating along the radial direction of the oscillation turntable and an oscillation driving mechanism; a wave form assembly includes a wave form turntable and a wave form driving mechanism, the wave form turntable is provided with a plurality of alternating convex parts and concave parts, the oscillation support alternately abuts against the convex parts and the concave parts to reciprocate along the radial direction of the oscillation turntable; a base assembly includes a base and an incubation cover, the incubation cover is provided with an inlet and an outlet; an inlet and outlet assembly includes an inlet and outlet support fixedly connected with the incubation cover and a positioning piece group abutting against the oscillation support to lock the oscillation support at the inlet and the outlet. The oscillation mixing device, the sample analysis system and the control method solve the technical problem that substances on the mixing mechanism can be taken and placed in time without stopping the whole mixing work, and the cost is reduced.

The application discloses a speech transcription method, a speech transcription device and an electronic device, and belongs to the technical field of communication. The speech transcription method comprises the following steps: based on a first speech, displaying a waveform graph corresponding to the first speech in a first area of a display screen, and displaying text information obtained by transcribing the first speech in a second area of the display screen; receiving a first input of a user; in response to the first input, determining a decibel range; filtering the first speech according to the decibel range, and updating the display of the waveform graph and the text information.

This invention provides a steel wire cord with a structure of nx1, where n is the number of steel monofilaments in the steel wire cord. The elongation of the steel wire cord at 2.5N to 50N is less than 1.2%, and the lay length is greater than 16mm. When unwound from the steel wire cord, each steel monofilament has a helical wave form, with a wavelength L in mm and a wave height H in mm, where L is greater than 16mm. The spatial volume Vs of each steel monofilament satisfies Vs = L x H. 2 xπ / 4, and Vs>20mm 3 The steel wire cord of this invention is beneficial for stress distribution.

This invention belongs to the technical field of low-frequency calibration methods for non-free-field hydrophones, and particularly relates to a low-frequency calibration method for non-free-field hydrophones based on multi-frequency measurement and deep learning. The method involves determining the test frequency points for hydrophone calibration, selecting several frequency points within the nearest frequency band of each test frequency point, emitting sinusoidal pulse signals through an underwater acoustic transducer, and receiving the acoustic signal waveforms corresponding to each frequency point at the sound pressure measurement point. The received waveforms at each frequency point are then time-domain aligned and resampled to construct a two-dimensional waveform diagram with time as the horizontal axis and frequency as the vertical axis. In this two-dimensional waveform diagram, the direct sound components are vertically distributed, while the reflected sound components are slopingly distributed with different slopes. A deep learning module based on a U-shaped encoder-decoder network structure is constructed, and this deep learning module is trained and its parameters optimized using a pre-generated two-dimensional waveform dataset.

Methods providing biofeedback generally comprising: correlating an emotional state with an emotional resonance signal of a person; determining a bio-resonant frequency and wave form from a segment of the emotional resonance signal; and producing a feedback signal that is a higher harmonic of the emotional resonance signal. Said feedback signal can help adjust emotional states, balance brainwave activity, forge new neuro-circuits, increase interhemispheric communication, creativity and brain-efficiency thereby improving a full spectrum of nervous system activity from hyperarousal to deep sleep.

According to one embodiment, an aerosol-generating device pack may include: a power source; a first circuit board on which a processor is mounted; a second circuit substrate disposed to be spaced apart from the first circuit substrate, and on which is mounted a radio frequency (RF) signal generation circuit for generating an RF signal using power supplied from the power source, and at least one amplifier for amplifying the RF signal using the power supplied from the power source, the at least one amplifier is used for amplifying the generated RF signal; and a radiation section that radiates the amplified RF signal in the form of an electromagnetic wave into an insertion space into which an aerosol-generating article is inserted to heat the aerosol-generating article, in which the processor may be configured to control the RF signal generation circuit and the at least one amplifier.

Disclosed are a teaching tool and teaching method for Fourier transform of a function in the technical field of teaching tools for functions, said teaching tool comprising a main body frame, a curve board, a waveform board, and a positioning frame plate. The main body frame is a box which is internally hollow. A plurality of strip-shaped plate blocks are transversely and sequentially joined into the curve board. Both the curve board and the waveform board can be detachably vertically inserted into a joining plate cavity of the main body frame. The curve board and the waveform board can physically display a waveform by means of the present apparatus. Moreover, the waveform can be flexibly drawn by a teacher in class, and then joined from a plurality of different waveforms into a mixed Fourier waveform graph. Also, the Fourier waveform can be conveniently re-split into different regular function waveforms, thus facilitating clean splitting. Furthermore, the present apparatus can perform combination of multiple functions and can also perform inverse splitting in an imageable manner, achieving vivid and imageable teaching, attaining flexible waveform variations, and providing a convenient teaching approach to Fourier transform teaching.

Methods providing biofeedback generally comprising: correlating an emotional state with an emotional resonance signal of a person; determining a bio-resonant frequency and wave form from a segment of the emotional resonance signal; and producing a feedback signal that is a higher harmonic of the emotional resonance signal. Said feedback signal can help adjust emotional states, balance brainwave activity, forge new neuro-circuits, increase interhemispheric communication, creativity and brain-efficiency thereby improving a full spectrum of nervous system activity from hyperarousal to deep sleep.

The first aspect of this invention proposes an audio waveform drawing method and system based on Android. The method includes the steps of: acquiring audio amplitude data; dividing the audio into segments according to length, with the length of each segment being the width of the device screen; determining the segment currently swiping across the left side of the screen as the main segment; drawing the waveform of several segments to the right or left and right sides of the main segment; monitoring the swiping state of the waveform; and redrawing the waveform of the current main segment and several segments to the left and right sides of the main segment when the main segment changes. Using segmented processing, calculation and redrawing are performed only each time the main segment is switched, which can significantly improve the efficiency of waveform drawing. The second aspect of this invention proposes an audio waveform scaling method and system. The method includes monitoring scaling gestures, recording the scaling ratio (scale), and scaling the waveform according to the scaling ratio (scale).

The embodiment of the application discloses a low-frequency focused electric stimulation device and method, the device comprises: an ultrasonic wave emitting module, which is used for emitting three beams of ultrasonic waves to a target position, wherein the three beams of ultrasonic waves are perpendicular to each other, and are focused on a target position of a sample to be stimulated, the center frequencies of the three beams of ultrasonic waves form an arithmetic sequence, and the signal frequency difference of two beams of ultrasonic waves adjacent in frequency is equal to a preset interference frequency; a static magnetic field generating module, which is used for generating a constant static magnetic field at the target position, so that the constant static magnetic field and the three beams of ultrasonic waves generate a target low-frequency alternating current signal at the target position, wherein the magnetic field direction of the constant static magnetic field is perpendicular to the combined direction of the three beams of ultrasonic waves emitted by the ultrasonic wave emitting module. Through the technical scheme of the embodiment of the application, the effect of providing a spatially symmetric, high-resolution low-frequency induced electric field and current to induce neuron electrical activity is realized.

The application discloses a pitch adjustment method and device, equipment and storage medium, and belongs to the technical field of sound source processing. The application obtains a pitch value and a sound source duration of an initial sound source, constructs a sound source coordinate system based on the pitch value and the sound source duration, generates a pitch waveform graph according to the sound source coordinate system, obtains operation data for the pitch waveform graph, and adjusts the pitch of the initial sound source according to the operation data, so that a user who is not a professional can also adjust the sound source according to personal preferences.

A technology related to a transmission device of an amplitude modulation method is disclosed. In the amplitude modulation transmission device, a transmission data signal transformed into a sinusoidal wave transition form is input to a signal input stage of a cascode power amplifier, and a transmission data signal transformed into another sinusoidal wave transition form is input to a bias power stage of the cascode power amplifier. The transmission data signal transformed into the sinusoidal wave transition form has a sinusoidal wave form in a section in which input data transitions and maintain its previous value in a section in which the input data is maintained.

The application relates to the field of laser technology and provides a laser system with controllable pulse states and a control method thereof. The control method of the laser system with controllable pulse states comprises the following steps: when the cavity length of an FP cavity is in an initial matching state and the air pressure in the FP cavity is a standard air pressure, a pump light source is controlled to adjust the pump power in a first set; in response to a target pulse interval being smaller than an initial pulse interval, the pump light source is controlled to keep the target power unchanged, the air pressure of the FP cavity is adjusted in a preset range, and the cavity length of the FP cavity is adjusted in a second set; a target cavity length is determined; the laser is controlled to output in a first pulse state; and the laser is controlled to output in a second pulse state. The control method introduces controllable abnormal wave forms with high peak power as physical layer disturbances or random sections according to a predetermined frame structure, improves the reliability and safety of system signal transmission without affecting data section transmission.

The utility model discloses a damper mold and a damper forming product with inner and outer pressing assisting areas. The damper mold comprises a pressing mold and a forming mold. The press-fit die comprises a press-fit surface, and the press-fit surface comprises an upper body forming part, an upper wire damper forming part, an outer press-assisting area protruding block and an inner press-assisting area protruding block. The forming die comprises a forming surface, and the forming surface comprises a lower body forming part, a lower wire damper forming part, an outer pressure-assisting area groove and an inner pressure-assisting area groove. The upper body forming part and the lower body forming part form a body on the body forming block. And the upper wire damper forming part and the lower wire damper forming part form wire dampers on the wire damper forming blocks. And the outer pressure-assisting area bump and the outer pressure-assisting area groove form an outer pressure-assisting area on the outer pressure-assisting area forming block. And the inner pressure-assisting area bump and the inner pressure-assisting area groove form an inner pressure-assisting area on the inner pressure-assisting area forming block. According to the utility model, the degree of shrinkage force borne by the wire damper forming block can be controlled, and the purpose of controlling the deformation degree of the wire damper is achieved.

The application discloses a GH4169 seamless bellows forming die, which comprises a plurality of half-open forming wave dies, a forming wave sleeve die, process wave outer end dies, a half-open process wave forming die one and a half-open process wave forming die two, forming wave grooves one are formed between left and right adjacent half-open forming wave dies, and forming wave parts for limiting extrusion forming bellows bodies are arranged in the forming wave grooves one, wherein process wave grooves are formed between the half-open process wave forming die one and the process wave outer end dies on one side, process wave grooves are formed between the half-open process wave forming die two and the process wave outer end dies on the other side, and process wave end parts for limiting extrusion forming bellows bodies are arranged in the process wave grooves. When the forming wave parts are extrusion formed, the deformation caused by rebound at the moment of pressure relief acts on the process wave end parts, and then the process wave end parts on the two sides of the forming wave parts are cut, so that the required bellows can be obtained, and the operation is convenient.

The invention relates to a method for controlling surface scratches of cold-rolled high-strength steel, and belongs to the technical field of high-strength steel production. The method comprises the procedures of acid rolling, continuous annealing, leveling and withdrawal and straightening. In the pickling rolling procedure, the strip steel plate shape is actively controlled to be in a double-side wave shape, and the wave height of double-side waves is 5-15 mm; in the leveling process, the roller diameter of a working roller of a leveling machine is 350-620 mm, and the leveling elongation rate is 0.2-1.5%; and the stretching and straightening elongation rate is 0.05 to 0.25 percent. In the acid rolling process, a specific plate shape beneficial to forming an avoiding gap in a subsequent continuous annealing furnace is actively preset, after the strip steel safely passes through the continuous annealing furnace and is subjected to heat treatment, the preset plate shape is accurately and thoroughly eliminated through the subsequent flattening and withdrawal and straightening processes, and the straightness required by a final product is recovered; the surface scratch defect caused by contact friction of the plate roller in the continuous annealing process is remarkably reduced or eliminated, and the dual purposes of scratch prevention and straightness keeping are achieved.

1. The name of the design product: roughness measuring instrument with wave form and parameter display graphical user interface. 2. The use of the design product: for measuring micro-texture of metal and all hard surfaces. 3. The design points of the design product: the shape of the front view, graphical user interface. 4. The picture or photo that best indicates the design points: front view. 5. The use of the graphical user interface: for full data display, wave form and data display at the same time. 6. The change state description of the graphical user interface: the interface state diagram is the home page interface, and human-computer interaction operation is carried out through the operation button below the interface. 7. Other circumstances that need to be explained: the content of the text and numbers in the interface diagram is not limited, and the wave form and parameters are referred to the interface state reference diagram.