211results about How to "Avoid noise" patented technology

A continuous intravenous analyte monitoring system includes an amperometric biosensor detecting an analyte concentration in the blood, a controller receiving a signal from the biosensor and computing the concentration, and an isolation device isolating the biosensor from EMI. A CPU may be coupled to the controller via the isolation device for continuous output of sensed concentration to a display unit. Isolated circuits may include a temperature sensor transmitting biosensor temperature to the controller for correction of the computed concentration, a multiplexer combining biosensor and temperature sensor signals, and an A/D converter converting multiplexed input to the controller. The biosensor may be a multi-electrode sensor having a working electrode immobilizing an glucose oxidase enzyme to detect blood glucose concentration. The biosensor and temperature sensor may be located in vivo using a catheter for continuous monitoring.

The invention discloses a method and a device for adaptively adjusting frequency of a conditioner motor and an air conditioner. The method includes: acquiring an acoustic signal of a conditioner indoor unit; acquiring initial operating frequencies of a motor of a conditioner fan and determining each abnormal sound pre-estimated frequency; subjecting the acoustic signal to spectral analysis to determine an amplitude value of the acoustic signal under each abnormal sound pre-estimated frequency; if the amplitude value of the acoustic signal under the i-th abnormal sound pre-estimated frequency is greater than an abnormal sound preset threshold, determining that the motor produces abnormal sound when running under the i-th initial operating frequency; combining the initial operating frequencies where the abnormal sound occurs into a resonant abnormal sound frequency range. The method and the device have the advantages that according to the relevancy between abnormal sound generation frequencies and motor operating frequencies, the acoustic signal is subjected to spectral analysis through the motor operating frequencies, whether or not the abnormal sound occurs is judged, the resonant abnormal sound frequency range is set, and the indoor fan can constantly adaptively avoid the resonant abnormal sound frequencies during operating so that the abnormal sound is effectively avoided.

A data processing method for automatically identifying the underlying syntaxes of unstructured data items, where unstructured data items are strings that include incomplete syntactical information but implicitly are characterized by a nontrivial syntax. The method comprises receiving input of unstructured data items into a processing machine memory; and recognizing the underlying syntaxes of the data items by the processing machine by applying pattern recognition techniques, wherein this step comprises identifying potential syntax components; and combining the components until the underlying syntaxes emerge.

The invention provides an action recognition method and device. The action recognition method comprises a first step of collecting action data, and calculating fitting data according to the action data, wherein the fitting data are used for representing energy change of an action generated at the moment when the action data are collected; a second step of reading a preset number of the fitting data into a sliding window in time sequence, wherein the sliding window slides forwards as time goes on so as to obtain newer fitting data, an action start point and an action stop point are determined according to the median of the fitting data in the sliding window, and all the action data between the action start point and the action stop point are extracted and used as valid action data; a third step of recognizing the valid action data and judging the type of the action. The action recognition method can accurately separate out the valid action data, and improves the accuracy rate of an action recognition result. The action recognition method and device is convenient to use due to the fact that action recognition is completely achieved on a smart phone.

In a fitting for a vehicle seat, in particular a detent fitting for a motor vehicle seat, having a first fitting part; a second fitting part that can be rotated and locked relative to the first fitting part; at least one locking element (17) the longitudinal direction of which is aligned in the radial direction, in which the locking element (17) is movable between guiding segments of the first fitting part with play in the transverse direction, and the radially outward side of the locking element cooperating with the second fitting part for the locking process; and an eccentric that, for the locking process, bears against the radially inward side of the locking element (17), for moving the locking element (17) radially outward, the locking element (17) is separated into at least two segments (19, 20) along at least one dividing line (18).

The invention discloses a winding device for banding pipes. The winding device is used for winding banding films on pipes and comprises a banding fixing base; two circular ring-shaped positioning plates are installed on the banding fixing base side by side, a driven rotating gear is arranged in the middle of the two circular ring-shaped positioning plates, and two bevels are formed on the end portions of the two circular ring-shaped positioning plates; a plurality of gears are evenly arranged on the outer circumference of the driven rotating gear and connected with the driven rotating gear in an engaged mode, and bevel portions are arranged on the two sides of each gear, used for making contact with the two bevels on the end portions of the two circular ring-shaped positioning plates in a matched mode, and used for supporting and positioning the driven rotating gear and providing rotary power for the driven rotating gear; a through hole for the pipes to penetrate through is formed in the middle of the driven rotating gear, a rotating head for installing the banding films is fixedly connected to one side surface of the driven rotating gear, and a film drawing device is arranged on one side of the driven rotating gear. According to the winding device for banding the pipes, the multiple pipes can be quickly banded and wound into bundles, moreover, the reserved ends of the banding films are short, and the banding efficiency is high.

A parking lock device that is installed in a transmission of a vehicle includes a gear, a lock, a receiver, a cam, and a damper. The lock has a pawl that can be engaged in a tooth space between the teeth of the gear. The lock moves between an engagement position at which the pawl is engaged in the tooth space to lock the gear and a retreat position at which the pawl is not engaged in the tooth space. The receiver is arranged to be fixed to a case of the transmission. The cam moves forward and backward with respect to a gap between the receiver and the lock. The cam holds the lock at the engagement position when having entered the gap. The damper is provided in a vibration transmission path to dampen vibrations transmitted to the case of the transmission.

An SMPS received a rectified periodic input line voltage and is configure to provide a regulated output. A power switch has a constant turn-on time in a given cycle of the rectified periodic input line voltage. A maximum value of the envelope of peak currents through the power switch is determined and is compared with a reference value, and the power switch turn-on time in the next cycle is adjusted accordingly. The output of the power supply is regulated to a target output value, and the current is in phase with the periodic input line voltage, resulting in a high power factor. No sampling of the line voltage is needed to maintain the high power factor. A controller chip can have as few as five pins. Alternatively, a seven-pin controller chip can have two external resistors for selecting operations in either Boundary Conduction Mode (BCM) or Discontinuous Conduction Mode (DCM).

A paper feeder includes: a multiple number of paper feed cassettes arranged abreast at approximately the same level in the sheet feed direction. These paper feed cassettes are formed into a unibody structure so that they can be pulled out altogether. The more upstream a paper feed cassette is located with respect to the sheet feed direction, the higher the level of the upper surface of the paper feed cassette is arranged. This arrangement affords a space over the downstream paper feed cassette, in which a feed path for recording paper picked up from a paper feed cassette located on the upstream side can be arranged.

The invention discloses a dismantling method for a concrete rigid frame arch bridge. The construction method comprises the following steps that construction preparation is conducted, specifically, a reasonable dismantling sequence is determined, cutting equipment is selected and is in place, buoyancy tank supports are arranged and checked, and lifting tools are checked; block dividing and paying off are conducted, specifically, according to the dismantling sequence, to-be-dismantled structures are subjected to block dividing and arranging; auxiliary arrangement such as handrails and micro-bending plates are dismantled; cutting machines and the buoyancy tank supports are mounted; primary and secondary arch ribs and connecting systems are cut and hoisted; a sunk well foundation dismantling protection structure is constructed; sunk well foundation block diving cutting and hoisting are conducted; and foundation pit backfill, river cross section recovery and protection structure dismantling are conducted. According to the dismantling method, by setting up the scientific dismantling sequence and using reasonable dismantling equipment, the disadvantages that as for a traditional dismantling method, the potential safety hazard is large, dismantling noise and dust are more, secondary cleaning pollution is serious, and the difficulty is large are avoided, and thus dismantling construction can be safely and efficiently carried out in an environmentally friendly mode.

A hunting retention system includes an elastic cord attached to each of the pair of rattling antlers and attached by a unique and novel attachment device to a user at the waist. Preferably, the restraining device takes the form of a belt, wherein an elastic cord extends on either side of the belt through eyelets externally of the belt so that the same can be attached to each end of one of the antlers of the pair of antlers. The elastic cord is looped through a metal ring lock, which is in turn attached to the antler. Proximate to the eyelet, a latch is attached to and retains the metal ring lock proximate to the user in all circumstances.

A thermal cutter for cutting with heat a board mounted upon a table having an internal space includes a plurality of walls and a sound absorbent material. The walls are disposed in the internal space of the table to partition a plurality of exhaust chambers with each of the exhaust chambers having an aperture that opens towards a side on which the board is mounted. The sound absorbent material is provided to at least a portion of at least one of the walls, the sound absorbent material being removably coupled to the table.

The system comprises: a plasma reaction chamber used for processing plasma; an impedance matching network; a switch component with a first end, a second end and a first switch control end, and the first end and first switch control end is connected to the control circuit in order to decide if the first end and second end of the switch will be on-state; a control circuit used for outputting the control signals; and a high frequency power used for providing high frequency power source. The impedance matching network comprise a first end, a second end and a matching control end; its first end is coupled to the plasma reaction chamber, its second end is coupled to the high frequency power, and its matching control end is coupled to the second end of the first switch component. The control signals are used to decide if a self-alignment impedance match is made for the high frequency power.

The invention provides an error compensation algorithm of a geomagnetic sensor application system. After three spatial axial components of a current geomagnetic vector is obtained by a geomagnetic sensor, corresponding compensation of each axial component is carried out through a carrier interference magnetic field removal algorithm and a software filtering mode. The invention provides a method for measuring a course angle. The magnetic compensation value of each spatial axis obtained through the above error compensation algorithm is utilized, through an inclination angle corresponding to a current carrier obtained by an acceleration sensor and combined with the measured magnetic components in the spatial coordinate system and a depression angle and a roll angle measured by the acceleration sensor, components and magnetic course angles in X axis and Y axis in a corresponding horizontal coordinate system are calculated and finally the course angle of the carrier is obtained. Errors of the geomagnetic sensor application system caused by body coordinate distortion of a measuring result or complete annihilation in noise caused by influence of a magnetic interference source are prevented, and effectiveness and accuracy of magnetic signal compensation are raised.

A noise correction circuit that detects and corrects noise included in an image signal output from an image sensor is provided. The noise correction circuit includes a noise determining unit, a noise removing unit, and a random number adding unit. The noise determining unit is configured to calculate an average value of a signal level in a predetermined range of the image signal output from the image sensor and use the calculated average value to calculate a noise component in a predetermined direction. The noise removing unit is configured to remove noise from the image signal output from the image sensor in response to the noise component determined by the noise determining unit. The random number adding unit is configured to add a random number at a level not determined by quantization of the image signal to the image signal after removal of the noise by the noise removing unit.

The invention provides a pipeline connection assembly and an air conditioner with the same. The pipeline connection assembly comprises a connection pipe nut, a first pipe joint and a second pipe joint, wherein the connection pipe nut comprises a first internal thread section located at the first end, a second internal thread section located at the second end, and a cylindrical outer surface, and a first connected pipe fitting is installed on the connection pipe nut; the first pipe joint comprises a force application section and a first external thread section, the first external thread section is matched with the first internal thread section, and a second connected pipe fitting is installed on the first pipe joint; the second pipe joint is arranged on the first connected pipe fitting in a sleeved mode and comprises a pipe joint body and an auxiliary nut, and the first pipe joint is provided with a first axial through hole enabling the first connected pipe fitting to be communicated with the second connected pipe fitting. According to the pipeline connection assembly, demounting prevention of connection pipes can be truly achieved, the problem that refrigerants are leaked due to disassembling of existing pipelines after being connected is solved, and pipeline connection can be more compact; after-scale installation and maintenance cost is reduced, and the use range of flammable refrigerants is enlarged.

A bracket-equipped vibration-damping device including: a vibration-damping device main body including vertically-separated, elastically-connected first and second mounting members; a bracket receiving the device main body inserted laterally thereinto; a connection-insert section provided for the second mounting member; a connection groove provided for the bracket extending in an insertion direction of the device main body; at least one up-down urging rubber fixed on an outer surface of the connection-insert section on an upper-lower first side; and a lock protrusion formed on an inner surface of the connection groove on an upper-lower second side, with a smaller protrusion dimension than an up-down thickness of the up-down urging rubber such that the connection-insert section is laterally inserted into the connection groove beyond the lock protrusion before being urged to the second side by the up-down urging rubber to be positioned to the connection groove.

Disclosed herein is a linear vibration motor including: a fixing part including a magnet; and a vibrator part including a coil corresponding to the magnet and a printed circuit board coupled with the coil, wherein one end of the printed circuit board is coupled with the fixing part and the other end thereof is coupled with the coil.

A mutual-capacitance organic light emitting touch display apparatus includes a thin film transistor substrate, a common electrode layer, an organic light emitting material layer, and at least a touch electrode layer, including a plurality of first touch electrodes arranged along a first direction, and a plurality of second touch electrodes arranged along a second direction; a thin film encapsulation layer; a display controller having a display power source, and electrically connected to a thin film transistor, a pixel electrode and the common electrode layer of the thin film transistor substrate; and a touch controller including a touch power source. The touch controller applies a touch driving signal to a selected first touch electrode, and senses a touch sensing signal at a second touch electrode, and outputs the touch sensing signal to the common electrode layer or a reference point of the display controller by a non-inverting amplifier.

An exposure device for exposing the charged surface of a photoconductive drum is provided with a light source for emitting light based on image information; a rotary multifaceted mirror for reflecting the light emitted from the light source to scan the surface of the photoconductive drum; a driving mechanism for drivingly rotating the rotary multifaceted mirror; an inner casing for covering at least the driving mechanism and the rotary multifaceted mirror; and an outer casing for covering the inner casing from the outside. An air vent for communicating the inside and outside of the inner casing is formed in a part of the inner casing facing the rotary multifaceted mirror.

The invention discloses a gantry-type X-ray nondestructive detection device which is composed of a gantry framework, a sliding beam mechanism, a sliding beam transmission mechanism, a C-shaped arm mechanism and a C-shaped arm swinging mechanism. The sliding beam mechanism and the sliding beam transmission mechanism are installed in the gantry framework, and the C-shaped arm mechanism and the C-shaped arm swinging mechanism are installed in the sliding beam mechanism. The detection device composed of all the mechanisms is matched with a workpiece transportation vehicle with a rotary tool to place a detection workpiece on a detection position, and the detection workpiece on the workpiece transportation vehicle can relatively move and rotate front and back relative to detection equipment on the detection device. The detection equipment on the detection device completes the functions of vertically moving, moving left and right and swinging relative to the detection workpiece, and therefore focusing and data collecting can be omni-directionally performed on different detection points of the workpiece, so that imaging is clear and X-ray nondestructive detection on large castings is completed. The gantry-type X-ray nondestructive detection device is simple in structure, reliable in operation, steady in transmission, high in precision and capable of preventing a balancing weight from sliding to generate noise and meeting the customer requirements.

The invention discloses a refrigerator which comprises a box body, a shelf, a fruit and vegetable box assembly and a transmission part, wherein the front side of the box body is provided with an opening, and a refrigerating chamber is limited in the box body; a refrigerating chamber door can be pivotally installed on the box body so as to open and close the refrigerating chamber, and the shelf is arranged in the refrigerating chamber; the fruit and vegetable box assembly comprises a fruit and vegetable box arranged below the shelf and an overturning cover connected with the shelf; the transmission part is connected with the overturning cover so as to drive the overturning cover to overturn between the closing position and the opening position through the transmission part when the fruit and vegetable box is extracted out and inserted in, wherein the overturning cover is placed on the operating position and closed on the front side of the fruit and vegetable box when the fruit and vegetable box is fully inserted, and the overturned cover is placed on the open position and shrunk below the shelf when the fruit and vegetable box is extracted out for the preset distance. The refrigerator provided by the embodiment of the invention has the advantages that the fruit and vegetable box assembly has a simple structure and easy to use; and noises are not generated in use and objects can be obtained conveniently.

The invention discloses a universal wheel for a luggage, which is suitable for being installed at the bottom of the luggage. The bottom of the luggage is correspondingly provided with a plurality of mounting seats; the universal wheel for the luggage comprises a wheel seat, a caster, an idler wheel, a horizontal shaft and a vertical shaft; the caster is internally provided with a vertical bearing; the vertical shaft is fixedly connected with the wheel seat after passing through the vertical bearing; the caster rotates around the vertical shaft along the vertical direction and convexly extends downwards to form two wheel caps in which shaft holes are arranged correspondingly; the idler wheel is axially arranged between the two wheel caps; the horizontal shaft passes through the idler wheel, and two ends of the horizontal shaft are fixed on the wheel caps; the idler wheel rotates around the horizontal shaft; the wheel seat is installed on the mounting seats; and the horizontal shaft and the vertical shaft are respectively coated with a carbon steel coating. The universal wheel for the luggage, which is provided by the invention, is flexible to rotate, can realize universal rotation, and has no noise in the advanced moving process, long service life and good whole performance.

The invention belongs to the technical field of monitoring equipment, and specifically relates to a security monitoring system and a control method thereof. The security monitoring system comprises abase and a camera body used for monitoring; the security monitoring system further comprises a dustproof and water proof protection device and a controller; the controller is used for controlling thework of equipment; the camera body is installed inside the protection device through the base; the protection device comprises a protective shell, a light-transmitting hole, a sponge brush, high-permeability glass, a No.1 mounting plate, a No.2 mounting plate, a driving gear, a limiting gear, a No.1 rotating shaft, a No.2 rotating shaft, an annular sliding groove, an annular gear, a slider and a micro speed regulating motor; and the protective shell is of a horizontally-arranged cylindrical hollow structure, and one side, far away from the base, of the protective shell is provided with the light-transmitting hole. According to the security monitoring system provided by the invention, the protection device is arranged on the camera body, so that a camera is protected, and dust under a mineis prevented from covering the camera body, thus a monitored picture is ensured not to be shielded.

The invention discloses a stepless speed regulating system for magnetic gear motor rotation. The stepless speed regulating system comprises a double-rotor magnetic gear motor, an engine, a wheel main reducer, an inverter, a motor control unit, an engine control unit and a power management unit. Two rotors of the double-rotor magnetic gear motor are connected with a crank of the engine and the wheel main reducer respectively, non-contact coupling of magnetic torque and engine torque is achieved, and therefore frictionless energy transmission of the whole system is achieved. By means of the double-rotor magnetic gear motor, the engine can work at the working point with the highest efficiency to the largest extent, the engine can be assisted and driven by the motor in the startup and speedup process, and therefore instant oil consumption is prevented from increasing. Two sets of windings of the motor can simultaneously run in an electricity generation mode and an electric mode, and power density is high. Meanwhile, speed ratio configuration of a magnetic gear is optimized so that the structure can be most simplified on the premise that the speed ratio is closest to that of a traditional planetary gear set, and the production process of products is simplified.

The present invention provides an implanted in-vivo continuous blood sugar monitor. A laser generating and control unit is connected with a microcomputer for receiving the control command transmitted from the microcomputer. The output end divides the laser to two beams through a beam splitter. One beam is sampling light and is output to an optical power sampling unit. The other beam is output light and is output to an attenuation absorbing measuring unit. The optical power sampling unit detects and amplifies the sampling light, and then transmits the detected and amplified sampling light into a microcomputer through a data collection module. The attenuation absorbing unit transmits the optical absorbing information of obtained tested medium into the microcomputer for executing data modeling through the data collection module. The invention adopts a CO2 laser as a light source. The measuring mode adopts background removal. The noise caused by environmental factor and influence caused by instrumental shift are prevented. The measuring precision is increased. The accurate single wavelength absorbing amplitude can be obtained and more accurate absorbance value can be obtained. The power of laser is adjustable. The measuring precisions of system under different laser powers can be analyzed. A mode of multi-wavelength measurement can be adopted for increasing the modeling precision thereby increasing the prediction precision.

In a smartphone that outputs PCM data and DSD data of different data format from PCM data to a USB DAC, to prevent generation of noises from the USB DAC when the smartphone accepts stopping instruction of outputting digital audio data to the USB DAC while outputting DSD data to the USB DAC.

A controller 11 outputs mute data representing silence of DSD data to a USB DAC 2 when it accepts pausing instruction while outputting DSD data to the USB DAC 2.

There is provided an apparatus for auto-focusing including: a sensing unit sensing a current position of a lens moving within a predetermined range along a moving shaft; an A/D converter converting a lens position value from the sensing unit into a digital signal; a lens position control unit generating a signal for moving the lens to a target lens position determined by an auto-focusing algorithm; a driving signal generating unit generating a square wave signal according to the signal from the lens position control unit; and an operation unit connected to the A/D converter and controlling a time at which the A/D converter performs conversion according to the square wave signal from the driving signal generating unit.

The invention relates to an air purifier and an air feeding assembly thereof. The air feeding assembly comprises a shell, a draught fan assembly and an electric energy input terminal, wherein the draught fan assembly and the electric energy input terminal are arranged inside the shell. An air inlet is formed in the bottom of the shell, and an air outlet is formed in the top of the shell. The draught fan assembly comprises an air flue shell. The air flue shell comprises a cylindrical part and a horn-mouth-shaped part, wherein the cylindrical part is connected with the air outlet, and the horn-mouth-shaped part is connected with the air inlet and becomes larger in the air flow direction. Thus, after air flow enters the air flue shell from the air inlet, the air flow firstly enters the horn-mouth-shaped part with the diameter becoming larger gradually and then enters the cylindrical part, the air flow flows in a diffusion manner, eddies cannot be generated at the part connected with the air inlet, noise generated by the eddies is avoided, and the experience effect of a user is improved. Furthermore, by means of the structure, the air speed can be increased, and the air purifying effect can be improved. The air feeding assembly is provided with the electric energy input terminal so that air feeding assembly and air purifying modules can be designed in a split manner, and thus the user can conveniently replace the air purifying modules according to self demands.

The invention discloses a refrigerating appliance with an air conditioner and a refrigerator and a control method thereof; the refrigerating appliance comprises: refrigerator compartments including a variable temperature chamber having a cold storage device arranged inside, and a variable temperature chamber door; a conditioner chamber communicated with the outside through an air outlet; an evaporator chamber having an evaporator arranged inside; an air duct system allowing the evaporator chamber to controllably communicate the refrigerator compartments and the conditioner chamber. When the refrigerating appliance is in refrigerator mode, the air duct system communicates the evaporator chamber and the refrigerator compartments so that air circulates between the evaporator chamber and the refrigerator compartments; when the refrigerating appliance is in conditioner mode, the variable temperature chamber door is opened, the air duct system communicates the evaporator chamber and the conditioner chamber so that air circulates among the evaporator chamber, the conditioner chamber, the outside and the variable temperature chamber, and the air is precooled in the variable temperature chamber via the cold storage device before entering the evaporator chamber for secondary cooling.