43results about How to "Less noise" patented technology

An eye measurement system may include a target that moves transverse to an optical path from the target to eye, so as to relax accommodation of the lens of the eye. The target may move transverse to the optical path on a display. The patient may be fogged while the target moves transverse to the optical path, and the target may become smaller such that the patient perceives the target to be moving away from the patient. A pupil camera may measure eye position that can be correlated with the position of the target on the display to determine that the patient has maintained fixation on the moving target. A visible measurement light beam may be pulsed subsequent to and/or during motion of the target that relaxes accommodation of the eye so as to avoid visual interference of the measurement light beam with the target on the display.

A protective sport helmet, such as for lacrosse includes a hard shell portion. The hard shell portion is constructed so as to provide protection to a wearer's head. The inner side of the hard shell portion includes a lining portion that is secured thereto. A chin strap portion is includes for attachment to the hard shell portion at a plurality of attachment points. The hard shell port ion includes a ledge portion that extends generally forwardly therefrom. A visor portion is secured to the hard shell portion and overlies the ledge portion. A facemask portion is secured to both the hard shell portion and the ledge portion in order to improve the structural integrity of the helmet.

A flushing device includes a cistern, in which at least one pressure chamber is arranged with a supply line for water and a discharge valve. At least part of the flushing water may be pressurised in the pressure chamber and may be discharged for flushing through the discharge valve. At least one pressure cylinder unit is provided, in which the flushing water may be pressurised and discharged for flushing, by means of a spring-loaded pressure piston. The pressure piston is preferably held in a starting position and may be released for a flushing execution. Should two pressure cylinder units be provided, either a partial or a complete flushing operation may be selected.

The present invention discloses an arrangement and a method for controlling the power supply of the load of an elevator system. The arrangement comprises at least a monitoring unit (40) and at least one controllable power source (41), which controllable power source (41) is fitted between the load (2, 12, 13) of the elevator system and the monitoring unit (40) such that the power supply of the load (2, 12, 13) of the elevator system can be controlled by means of a control signal transmitted to the controllable power source (41) by the monitoring unit (40). The monitoring unit (40) according to the invention contains at least one input for determining the status of at least one safety switch (11) of the elevator system. On the basis of the status of the safety switch a control signal (47) either comprised of pulses or in a static state is sent with the monitoring unit (40) to at least one controllable power source (41).

A hinge pivotally connects to a cover and a base of an electrical appliance and has a stationary-positioning element, a rotating-positioning element and a buffering spacer. The stationary-positioning element is mounted securely in the base and has at least one positioning protrusion. The rotating-positioning element is mounted securely in the cover and has at least one positioning detent corresponding to the positioning protrusion when the cover is closed. The buffering spacer is attached to the rotating-positioning element to let the stationary-positioning element and the rotating-positioning element in constant contact, which results in friction between the stationary-positioning element and the rotating-positioning element being uniform. Therefore, the hinge as described makes less noise.

An airborne craft is provided comprising an aerodynamic lifting device having a radial drum fan and a thrust vectoring shroud. The radial drum or vertical axis fan comprises a fan with a rotor, the rotor having a rotational axis and comprising a plurality of rotor blades disposed in an annular ring about the rotational axis and a driving means for the rotor such that, on operation of the driving means, lift is generated.

An anti-sway hitch having a ball mount housing which defines a channel and a trunnion pivotally positioned within the channel. The hitch also has a spring, a first engagement member, and a second engagement member with the spring mounted on the first member within the ball mount housing and the first member engaging the second member. The hitch further includes a post positioned within the ball mount housing and the engagement members positioned on the post wherein rotation of the trunnion causes corresponding rotation of the post and the first member. A method of towing a trailer with an anti-sway hitch is also provided.

The invention discloses an agitator. The agitator comprises a main unit (1) which provides power input, an agitation cup (5) and an agitator mill structure (4) which is arranged in the agitation cup (5); an output shaft of the main unit (1) penetrates through the bottom of the agitation cup (5) and is connected with the agitator mill structure (4); the agitator mill structure (4) comprises a filtering assembly and a knife assembly which is matched with the filtering assembly; the filtering assembly comprises a feed port (411), a filter screen (412) and a knife holder (413); the feed port (411) is positioned at the upper end of the filtering assembly; the knife holder (413) is arranged at the lower end of the filtering assembly; the filter screen (412) is connected between the feed port (411) and the knife holder (413) in a close fit way; and the knife assembly is arranged on the knife holder (413) and is positioned in the filter screen (412). The agitator can achieve a good crushing effect in the working state of low rotation speed, and greatly increasing food processing universality.

An amplifier for wireless receivers and an associated method is provided. The amplifier provides an output signal to an output terminal in response to an input signal received from an input terminal, and further includes a first block and a second block. The first block is coupled between the input terminal and the output terminal, and includes a gain control terminal and a first transistor. The gain control terminal is coupled to a gain control signal, while the gain control signal is provided such that the first transistor is kept operating in a triode region, and a gain of the output signal over the input signal can be seamlessly tuned in response to the gain control signal.

The invention relates to a single-bit synthetic aperture radar imaging method based on block sparse iteration threshold processing, and belongs to the technical field of radar imaging. According to the single-bit radar imaging method, the joint sparsity between the real part and the virtual part and the clustering property in the image are simultaneously developed. Compared with other existing methods, the background of the imaging result is clearer, the miscellaneous points are less, the pixels of the target region are more centralized and the imaging quality is higher.

The invention relates to a blast heap ore rock particle image segmentation method. The method comprises the following steps: S1, inputting a to-be-segmented ore rock particle image of the blasting muck pile into a pre-trained first convolutional neural network model to obtain a first probability graph and a first profile graph; S2, correcting the first probability graph by using the perimeter andthe area of the closed contour to obtain a first corrected probability graph; S3, inputting the first correction probability graph into a pre-trained second convolutional neural network model to obtain a second probability graph and a second contour graph; S4, obtaining an (n + 1) th probability graph by means of a second convolutional neural network until the resolution ratio of the total area ofall contours in the (n + 1) th contour graph to the first probability graph is greater than or equal to 1; S5, adding the nth contour map and the (n + 1) th contour map to serve as a segmentation map; according to the method, the contour is extracted by adopting the convolutional network of deep learning, the continuity is good, the number of miscellaneous points is small, the edges of the adhered ore rock particles are accurately segmented, adjustment of complex parameters is avoided, the segmentation precision is high, and the practicability is good.

The invention provides a three-dimensional point cloud restoration method for graphic processing. The method comprises the following steps: step 1, collecting data from an input point cloud model data set; 2, combining a method based on a Self-Attention self-attention mechanism with a multilayer perceptron (MLP) to obtain a long-distance dependency extraction network, mapping the input point cloud into a global feature vector by using the long-distance dependency extraction network, and generating a missing part of the incomplete point cloud by using a decoder of a topological root tree structure; and step 3, synthesizing the incomplete point cloud and the generated missing part point cloud together to obtain a final repaired complete point cloud model.

The present disclosure relates to a container (10) for delaying spoilage of a consumable product by means of a low pressure environment. The container comprises a connection port (31) accessible from outside the container (10) for connecting an external container (20). A controller (15) is programmed to selectively operate in one of a plurality of different modes (M1,M2). An internal vacuum mode (M1) is used for lowering a pressure inside (11) an internal compartment (1) until a target internal storage pressure (P1) is reached. An external vacuum mode (M2) is used for lowering a pressure inside (12) an external compartment (21) until a target external storage pressure (P2) is reached. The target external storage pressure (P2) is lower than the target internal storage pressure (P1).

The invention discloses a small-size light-weight linear generator system possessing a double-stroke free piston motor. The small-size light-weight linear generator system includes the double-stroke free piston motor and a linear generator. The double-stroke free piston motor includes a single cylinder which is used to inhale the fuel and the air and a piston which is arranged in the single cylinder, makes the linear reciprocating motion, and at the same time presses the fuel and the air. The linear motor includes a mover which makes the reciprocating motion and a magnet which is arranged on the mover and generates the magnetic force. The inside of the single motor is provided with an air release valve which opens and closes synchronously with the action frequency of the linear generator. The motor system can realize the action synchronous opening and closing of the valve and the motor without arranging an individual synchronous device.

A lamp driving circuit, an inverter board and a display apparatus having the inverter board, the lamp driving circuit receiving a direct current voltage and provides the direct current voltage to a square wave generator, and the square wave generator outputting a first square wave voltage having a duty ratio corresponding to a voltage level of the direct current voltage. An inverter controller compares the first square wave voltage with a reference voltage and outputs a second square wave voltage. An inverter provides an output of a lamp driving voltage according to the duty ratio of the second square wave voltage.

Provided is a display device causing less noise on a signal. A display device (10) includes a plurality of signal lines (SL), a plurality of gate lines (GL), and a driving unit. The plurality of gate lines crosses the plurality of signal lines. The driving unit is connected to the plurality of gate lines and controls a potential of each of the gate lines. The driving unit includes a plurality of gate drivers (11) and a plurality of lines. The gate drivers are disposed in a display region, and at least one of the gate drivers is connected to each of the gate lines. The lines are each provided with a potential for operation of one of the gate drivers. Each of the lines crosses one of the signal lines. The plurality of lines includes a first line (17A) and a second line (17B). The driving unit switches a potential of the first line at predetermined timing. The driving unit switches a potential of the second line into a direction opposite to a direction of the switched potential of the first line upon switching the potential of the first line.

A hair dryer (10) has a hand-held housing comprising an air inlet (12), an air outlet (14), a motor (1) between said air inlet (12) and said air outlet (14) to draw air in from said air inlet (12) and drive air out from said air outlet (14). A heating element (17) is located in said air flow between said air inlet (12) and said air outlet (14). The hair dryer (10) further comprises a filter on said air inlet (12). The filter comprises a metal filter plate (20) bearing a plurality of holes, wherein at least some of said holes have a maximum lateral dimension of less than 1.5 mm and wherein vertical walls of said holes through a thickness of said filter plate are substantially straight or at least partially concave.

For ensuring a low cost transport of signals in a radio network, in particular with a high density of radio access points, a method is proposed, where the signals are transported over wires between a base station and radio access points, comprising the steps of:

• • determining the useful band of each wire (20);
  • associating at least two wires (21);
  • filtering the signal into sub-bands (22);
  • transporting each sub-band over one or more wires of the associated wires (25);
  • at the receiving end rebuilding the signal from the sub-bands (27). Further proposed are a radio head and a radio controller both adapted to the present method.

An elevator installation with an elevator car and a counterweight, a suspension cable suspending the elevator car and the counterweight, and a compensating cable compensating the effect of the weight of the suspension cable, is equipped with a compensating cable guide which for the purpose of guiding the compensating cable has at least one brush.

The invention discloses a high-current quick-opening body, which is characterized in that the two ends of the insulating sleeve are respectively installed with an end plate of an explosion chamber and an end plate of a storage chamber for connecting to a circuit, and the end plate of the explosion chamber and the end plate of the storage chamber are respectively installed. There is a cylinder in the middle of the end plate, and the front end of the cylinder of the end plate of the blasting chamber is screwed with a plug, and there is a through hole for the lead wire of the explosive in the middle of the plug, and there is a piston bridge between the end plate of the blasting chamber and the cylinder of the end plate of the storage chamber. , the front end of the piston bridge body is connected to the cylinder body of the end plate of the blast chamber, the part between the piston bridge body and the blockage is an explosion chamber filled with explosives, and the rear end of the piston bridge body is inserted into the cylinder body of the end plate of the storage bin, The rear end of the barrel of the storage end plate is a tapered inner hole, which does not allow the piston bridge body to pass through. When the invention is detonated under the action of a control signal, the accuracy rate is high, the amount of explosive is small, and the risk of explosion is small.

The invention is suitable for the technical field of image processing, and provides an image processing method and device, and terminal equipment. The method comprises the steps: obtaining a to-be-reconstructed image; extracting a high-frequency component and a low-frequency component of the to-be-reconstructed image to obtain a first high-frequency image composed of the high-frequency component and a first low-frequency image composed of the low-frequency component; inputting the first high-frequency image into a trained high-frequency image generation network to obtain a second high-frequency image output by the high-frequency image generation network; inputting the first low-frequency image into a trained low-frequency image generation network to obtain a second low-frequency image output by the low-frequency image generation network; and generating a reconstructed image according to the second high-frequency image and the second low-frequency image, wherein the resolution of the reconstructed image is higher than that of the to-be-reconstructed image. Through the method, an image with a better effect can be reconstructed.

The present invention aims to couple a propeller with a power output shaft to transmit the torsional force of the power output shaft to the propeller. The apparatus includes a first sleeve and a second sleeve that form a coupling surface between them to hold a torsional force transfer means. The torsional force transfer means is coupled with the first sleeve and the second sleeve to transmit only a selected amount of the torsional force. The first sleeve has a first outer surface and the second sleeve has a second inner surface that are engaged respectively with the propeller and the power output shaft in the rotating direction so that the power output shaft can transmit the torsional force to the propeller. In the event that the propeller is overloaded the torsional force transfer means between the first sleeve and the second sleeve slip to form a protection mechanism.

The double wheel rotor engine includes one case comprising cylinder body and cover; one main motion system with most parts in the cylinder and shaft extending beyond the cylinder; one gas distributing system comprising air strainer, total gas inlet pipe, turbocharger and other parts; one water or air cooling system; one lubricating system comprising lubricant tank, oil pipes, filtering and cooling supercharger, driving gear and lubricated parts; and one igniting system with power source, electronic igniting controller and spark plug. The present invention produces rotation power directly with the double wheel rotor engine, which has small size, light weight, great output power, low noise and easy cooling and is suitable for automobile, ship, small airplane, etc.

A slitting machine is used for slitting paper webs. The slitting machine comprises a first traction mechanism, a second traction mechanism, a buffer mechanism and a cutting mechanism. The second traction mechanism and the buffer mechanism are arranged between the first traction mechanism and the cutting mechanism. The buffer mechanism is arranged between the first and second traction mechanisms. The second traction mechanism is arranged between the buffer mechanism and the cutting mechanism. The second traction mechanism is used for changing the conveying speed of the paper webs according to the cutting requirement. The buffer mechanism is used for reserving or releasing the paper webs according to the cutting requirement. Compared with the prior art, the traction mechanisms and the buffer mechanism matched with the traction mechanisms are arranged, the traction mechanisms are used for tracking the cutting mechanism so as to change the feed amount of the paper webs, and therefore the cut paper webs of different specifications are obtained. The slitting machine has the advantages of being low in energy consumption, small in vibration and capable of reducing noise.

The invention discloses an image denoising method and device, equipment and medium, and the method comprises the steps: classifying each pixel block in a search window based on a preset clustering algorithm, wherein the pixel blocks comprise a reference block and a candidate block, the reference block is a rectangular pixel block which takes a current to-be-denoised pixel point as a center and has a side length of N, and the candidate blocks are pixel blocks selected by sliding a neighborhood window in the search window; respectively determining a first distance between the reference block and each candidate block, and respectively determining a second distance between the reference block and a clustering center of a category to which each candidate block belongs; and based on the first distance and the second distance corresponding to each candidate block, respectively determining an NLM filtering weight between the current pixel point to be denoised and the central point of each candidate block; and carrying out denoising processing on the current pixel point to be denoised based on the NLM filtering weight. In this way, the noise reduction risk caused by noise can be reduced, and the image denoising effect is improved.

A sensor having a movable element, such as a microphone with a diaphragm, where received sound is filtered by two parallel acoustical filters before being sensed by the sensor, where one acoustical filter has a larger acoustical resistance and a lower acoustical mass than the other.

The present invention provides both a method and an apparatus for optically encoding data. Light from a coherent source is split into two separate light signals, and each of these light signals is modulated with the data such that the data levels output correspond to the points of maximum optical power. One of the modulated light signals is phase biased to be in phase or in anti-phase with the other modulated light signal and the two light signals are then combined to form a combined optical output. The present invention enables the resulting combined optical output to be a data format with a high extinction ratio compared with conventional optical data formats. It can be used to produce a wide variety of optical data modulation formats.

The invention discloses a peanut harvester, and belongs to the technical field of peanut harvesters. The peanut harvester comprises a vehicle head part, a stripping mechanism, a screening and separating mechanism and a collecting mechanism, wherein the vehicle head part is used for pulling peanuts up; the stripping mechanism is connected with the vehicle head and used for stripping the peanuts; the screening and separating mechanism is connected with the stripping mechanism and used for screening the peanuts; the collecting mechanism is connected with the screening and separating mechanism and used for collecting the peanuts. The peanut harvester has the advantages of being high in collection rate, clean in peanut separation and higher in automation degree, and saving more energy.

The invention provides a laser dust monitor with digital modulation and demodulation and a monitoring method. The said monitor includes: a digital processing unit, which generates digital modulation signals and sends them to a digital-to-analog conversion drive circuit; a digital-to-analog conversion drive circuit, which converts digital modulation signals into analog signals to drive laser diodes; a laser diode, which generates a modulated laser driven by a digital-to-analog conversion drive circuit; a light source collimator, which filters the modulated laser, the filtered lasers first irradiating dust particulate matters and then falling on a detector; a detector, which generates photoelectric signals and sends them to an amplifier circuit; an amplifier circuit, which amplifies photoelectric signals and sends them to an analog-to-digital conversion circuit; an analog-to-digital conversion circuit, which converts the amplified photoelectric signals into digital quantity and sends itto the digital processing unit, which conducts demodulation and wave-filtering to the digital quantity of photoelectric signals to get the intensity of the photoelectric signals. The dust concentration value is obtained by multiplying the intensity of the photoelectric signals and the scattering coefficient of dust particles.

The invention discloses a combustion boiler with good shock absorption and noise reduction performances. The combustion boiler comprises a shock absorption base and a heating box, grooves being distributed equidistantly are formed in the inner wall of the bottom of the shock absorption base, and the inner walls of the grooves are provided with shock absorption springs in a welded manner. The outerwall of one side of the shock absorption base is provided with a fixed block in a welded manner. Fixed pieces being distributed equidistantly are fixedly arranged on the inner wall of one side of theheating box through bolts, and a water delivery pipe being placed obliquely is fixedly arranged on the inner wall of one side of each fixed piece through another bolt. The water delivery pipes are distributed on the inner wall of one side of the heating box in a snake shape, and air holes are formed in the snake-shaped bending places of the water delivery pipes. When water flow is agitated in thewater delivery pipes to generate lots of bubbles and shock, the shock absorption springs enable the shock to be substantially reduced. Thus, the shock absorption ability of the combustion boiler is increased, and the stability of the combustion boiler is improved. The water flow speed is decreased when the water flow moves in the water delivery pipe, so that the bubbles generated during agitatingare few and can be discharged from the air holes, and the generation of shock and noise is reduced.