733results about How to "Accurate sampling" patented technology

An individually targeted content delivery system and methods which allows content to be delivered to at least one set top box while preserving the privacy of the set top box users. The system and methods of the present invention determine one or more user models for a set top box based on user interactions with the set top box and content to be displayed on the set top box is selected based on the user model. The present invention also allows a set top box to determine when content has been experienced by a set top box user, and to require a set top box user to experience at least one pre-defined content before other content can be viewed.

A system and method for noise cancellation is disclosed herein generally having at least one microphone, a processor, and a speaker array. The processor may contain an adaptive filtering feature, to separate desirable sound from undesirable sound. The undesirable sound may be suppressed by the processor by creating a canceling waveform and transmitting the canceling waveform to the user's head via a speaker array. The desirable sound may be enhanced by increasing the amplitude of the waveform and transmitting the amplified waveform to the user's head via a speaker array. The sound transmitted to the user's head by the system may be localized using an image tracking subsystem and speaker array. The image tracking system may track the actual visible image or alternatively a heat (e.g. infrared) image of the user's head.

Embodiments of a needle biopsy device having a rotating needle mechanism to automatically cut sample tissue that can be operated remotely. A portable small biopsy robot can improve biopsy accuracy, reduce the pain and complications, and shorten the duration of the total biopsy time by using an automatic needle rotating mechanism and a needle localization system that allows a medical practitioner to perform the biopsy procedure from a remote distance. The needle biopsy device can include a cannula and a rotational biopsy needle with a blade the rotational biopsy needle axially and rotatably moveable within the cannula lumen, the blade configured to remove, cut, and / or separate a tissue sample from the target tissue site through rotation of the blade, and to hold the tissue sample in the rotational biopsy needle during proximal retraction from the patient.

A parallel data interface and method is provided herein, which adjusts a timing relationship of a clock signal to not only minimize clock skew, but to also compensate for noise components that may affect one or more paths of a parallel data bus. In some embodiments, the parallel data interface includes a first phase generator coupled to generate a first plurality of time delay pulses, and a first phase selector adapted to select one of the first plurality of time delay pulses to adjust the timing of a clock signal to sample each and every one of the plurality of data signals between minimum setup and hold time thresholds. In some embodiments, the parallel data interface includes a second phase generator coupled to generate a second plurality of time delay pulses, and a second phase selector adapted to select one of the second plurality of time delay pulses to adjust the timing of the clock signal to output the plurality of data signals from the data interface at least an amount of time (i.e., an access time) after the adjusted clock transition is output from the data interface.

The invention provides an unmanned ship achieving multi-function monitoring of a water area. The unmanned ship comprises a ship hull and a power device, a control apparatus and an application apparatus which are arranged on the ship hull, and five load compartments are arranged on the ship hull; the control apparatus comprises a programmable controller, a navigation device and a communication device, the programmable controller is connected with the power device, the navigation device, the communication device and the application apparatus through communication interfaces, and the programmable controller is used for receiving monitoring data and operation information of the power device, the navigation device, the communication device and the application apparatus and sending control instructions to the power device, the navigation device, the communication device and the application apparatus through the communication interfaces; the ship hull is further provided with a water quality sampling apparatus. The unmanned ship takes the programmable controller as the core, an internal bus and communication board cards are adopted to uniformly manage other apparatuses. The unmanned ship is high in cost performance, convenient to carry and easy to operate, the functions such as environment monitoring, water quality monitoring, water quality sampling and flow rate monitoring are integrated into a whole, and the water area monitoring operation efficiency is greatly improved.

The invention relates to a device and a method for detecting and positioning small current earthing fault. The device comprises a slave computer and a host computer composed of a CPU module, a DSP, a pre-loop unit module, a A / D conversion module, a memory module, a display and keyboard operation module as well as a communication module; wherein, the pre-loop unit module, the A / D conversion module, the CPU module and the DSP are connected in sequence; the memory module, the display and keyboard operation unit module and the communication module are respectively connected with the CPU; the host computer is connected with the communication module. The CPU module collects the analog signal of the zero-sequence voltage of the bus and the zero-sequence current of each line, and adjusts the value in proportion to the amplitude range so that the device can deal with. The analog signal is turned into digital signal recognized by the computer module, and analyzed by the DSP to judge whether the fault occurs or not. If the fault occurs, then the DSP gives the line selection result, saves the fault information and transfers the line selection result to the host computer for fault alarm.

An electronic endoscope apparatus has a single coaxial cable installed between a scope A and a processor unit B. Waveform superimposing circuits superimpose a video signal on power transmitted through the coaxial cable and sequentially superimpose scope-side reference pulses and processor-side reference pulses alternately on horizontal scanning blanking periods in one field of the video signal. At the same time, the scope A and processor unit B generate reference signals and various timing signals synchronized with the reference pulses of the counterpart and perform video processing based on them. This enables accurate sampling even when scopes with different pixel counts are used. Also, a scope information signal and electronic shutter control signal may be superimposed on a predetermined blanking period in the video signal. Alternatively, an electromagnetic coupler may be installed instead of the coaxial cable and the video signal and reference pulses may be superimposed on AC power supplied electromagnetically.

This invention synchronizes the sample clocks of an entire wireless network from a single central base station. Unlike a conventional digital radio network where every terminal must have a synchronization circuit in its receiver to adjust the sample clock, each of the radio terminals in this network is clocked from an independent free-running oscillator. For each terminal, the base station learns the frequency and phase of the oscillator by exchanging a special set of signals: first a vernier signal to determine the initial time and frequency offset, and then an early-late signal to track changes in the oscillator. Once the base station is synchronized to the terminal's oscillator, it can determine the absolute path delay between itself and the terminal and correct for the delay using an equalizer. Signals received from the terminal are corrected after the signal arrives at the base station. Signals sent to the terminal are corrected within the base station before they are transmitted so they arrive at the terminal at the precise time that the terminal's free running oscillator takes a sample.

An electronic endoscope apparatus has a single coaxial cable installed between a scope A and a processor unit B. Waveform superimposing circuits superimpose a video signal on power transmitted through the coaxial cable and sequentially superimpose scope-side reference pulses and processor-side reference pulses alternately on horizontal scanning blanking periods in one field of the video signal. At the same time, the scope A and processor unit B generate reference signals and various timing signals synchronized with the reference pulses of the counterpart and perform video processing based on them. This enables accurate sampling even when scopes with different pixel counts are used. Also, a scope information signal and electronic shutter control signal may be superimposed on a predetermined blanking period in the video signal. Alternatively, an electromagnetic coupler may be installed instead of the coaxial cable and the video signal and reference pulses may be superimposed on AC power supplied electromagnetically.

A system for the retrieval and initial conditioning of sample gas for "on line" analyzers or filling of gas sample cylinders. The preferred embodiment of the present invention contemplates a system configured to obtain a representative gas phase sample from a process gas containing entrained liquid, or a process gas which generally is highly susceptible to partial condensation of some gas phase components. The preferred embodiment of the present invention teaches an assembly including a phase separation membrane and housing configured to facilitate the removal of entrained liquid from a sample gas stream. Accuracy of the sample is enhanced, and compositional changes are avoided by first extracting a sample from the process gas followed by removal of entrained liquid it may contain, with the entrained liquid removal being conducted at the prevailing process gas pressure and temperature. Thereafter the liquid free sample may be desaturated by lowering its pressure to reduce its susceptibility to condensation.

The invention discloses a resolution method and a resolver for signals of a rotating transformer. The method comprises the steps of: acquiring a rotating angle signal of a motor and establishing a sine table, sampling a current low-frequency sinusoidal signal and a current low-frequency cosine signal, dividing the angle position of a rotor into four quadrants, and determining the quadrant which the position of the rotor belongs to; and performing the lookup of the sine table according to the low-frequency sinusoidal signal and the position of the rotor, and judging the rotation direction of the rotor. A sinusoidal excitation signal generator is connected with the rotating transformer and differential signal converters, and a sinusoidal differential signal feedback by the rotating transformer passes through the differential signal converter, then is input into a precision absolute value adder along with a reference signal, passes through a low-pass filter and then is input into a digital signal processor; and a cosinoidal differential signal feedback by the rotating transformer passes through another differential signal converter, then is input into the precision absolute value adder along with the sinusoidal excitation signal which passes through a phase inverter, passes through the low-pass filter and then is input into the digital signal processor. The resolution method and the resolver greatly reduce the cost, and can perform accurate sampling and conversion on input signals.

A clock and data recovery circuit includes a phase-shift circuit having a switch, which receives multiphase clocks, for selecting and outputting a plurality of clock pairs from among the multiphase clocks, and a plurality of interpolators, which receive the plurality of clock pairs output from the switch, for outputting clock signals in which delay time is stipulated by time obtained by performing interior division of the phase difference between the clocks of the pair; a plurality of latch circuits which receive input data in common; a phase detecting circuit for detecting and outputting phase, with respect to the clock, of a transition point of the input data from the outputs of the plurality of latch circuits; a filter for smoothing the output of the phase detecting circuit; and a control circuit for controlling clock phase by outputting control signals for controlling the interpolators and / or switch of the phase-shift circuit based upon the filter output.

A method, system and storage arrangement are provided for effectuating an evaluation and analysis of anatomical structures, and creating and / or modifying images associated therewith. In particular, at least two images associated with the anatomical structure can be normalized so as to produce normalized image. A normalized set of regions of interest can be obtained based on the normalized images. Each of the normalized set of regions of interest may be analyzed to provide analysis data. Further, the anatomical structure mask may be created and / or modified based on the analysis data. Another embodiment provides for rating and analyzing anatomical structures.

The invention relates to an embedded system testing method. Hardware and assistance software are adopted; firstly, pile pitching is carried out on a source code, a sentence is inserted in a specific place, then a pile pitching document is compiled and downloaded; when a target board operates to a pile pitching point, a bus presents specific signals, the auxiliary hardware of a data acquisition unit acquires the signals of the pile pitching points; subsequently, the acquisition point information is packed and sent to a testing result analyzing software for result analysis, thus the embedded system testing is realized. The testing includes coverage analysis, performance analysis, memory leak analysis, array out-of-range, variable control, trace following, Task monitoring, ISR monitoring, TaskISR switching monitoring, etc.

The invention relates to the field of microbiological inspection instruments and apparatus, particularly to an automatic bacteria inoculator comprising an inoculator body, a test tube storage device, a culture dish transferring device, an inoculation device, sterilization devices, a clamping device and a cover fetching device, wherein the test tube storage device is arranged at the rear part of the inoculator body; the culture dish transferring device is mounted in front of the test tube storage device; the inoculation device is distributed on the right side of the test tube storage device; the sterilization devices are arranged on left and right sides of the scribing position of the inoculation device; the cover fetching device is mounted on the inoculator body; and the clamping device is mounted on the inoculator body. The automatic bacteria inoculator adopts instrument operation instead of manual operation, and can automatically sterilize the inoculation environment and a bacteria inoculation ring, shorten the whole inoculation time, improve the working efficiency of bacteria inoculation and scribing, and reach high precision and idealized inoculation effects during bacteria inoculation and scribing.

The invention relates to an energy consumption monitoring and evaluating system comprising a data collecting module, a control module, a data information processing module, a communication module, and an energy consumption management platform, wherein the data collecting module is used for collecting power energy consumption data, and transmitting the collected data to the data information processing module; the data information processing module calculates the collected power data to obtain an electric energy value, and transmits the electric energy value to the energy consumption management platform; the control module is used for receiving a control command emitted by the data information processing module, and controlling on / off of a power data collecting circuit; the communication module comprises a wired transmission channel, and a wireless transmission channel; the energy consumption management platform comprises a server and a data memory device, and is used for counting and analyzing energy consumption data, forming various energy consumption statistical reports and energy consumption evaluation models according to the analysis result, and guiding the energy conservation and emission reduction work. The energy consumption monitoring and evaluating system has the advantages of being accurate to sample, high in sampling efficiency, scientific and reasonable to evaluate and schedule, and the like; human disturbance factors are completely avoided.

Apparatuses are described to accurately determine a gas concentration of a sample of a patient's breath. The apparatuses may include a sample compartment, a breath speed analyzer, a gas analyzer, and a processor. The sample compartment includes an inlet that receives the breath. The breath speed analyzer determines the speed of a portion of the breath. The gas analyzer determines a gas concentration. The processor includes an algorithm that determines a degree of non-homogeneity of the sample based on the speed, and a corrected gas concentration based on the degree of non-homogeneity. In some variations, the gas correction is determined independently of patient cooperation. Apparatuses may be tuned based on the intended population's expected breathing pattern ranges such that the sample compartment is filled with a homogenous end-tidal gas sample regardless of an individual's breathing pattern. These apparatuses are useful, for example, for end-tidal CO analysis. Methods are also described.

The present invention relates to a portable sampling device for deep in situ soil. The device comprises a hamming handle, a threaded joint, a connecting rod and a sampling head which are connected successively from top to bottom. The threads of one end of the connecting rod are connected to the threaded joint, and the threads of the other end of the connecting rod are connected to the sampling head; the connecting rods and the sampling head are sleeved with a straightness limiting device; the straightness limiting device comprises a cylindrical sleeve; a horizontal plate is arranged at the periphery of the bottom of the cylindrical sleeve; the cylindrical sleeve is perpendicular to the horizontal plate; the bottom port of the cylindrical sleeve is provided with an annular fending platform; a perforation is arranged at the center of the annular fending platform; and the sampling head and the connecting rod penetrate through the cylindrical sleeve and the perforation. The portable sampling device of the invention can perform stratified sampling and deep soil sampling; the straightness limiting device ensures the sampling head and the connecting rod vertically enter into the soil to prevent the sampling head and the connecting rod from inclining and remolding other soil layer when entering into the soil, thus no destruction to the original soil layers; the portable sampling device is dismountable and easy to carry, greatly improving the efficiency of soil sample collection.

The invention discloses a collector of surface sediments, which comprises a cylinder at an upper opening, a hanging bracket set on the top of the cylinder, a guide tube set on the outer wall of the cylinder, some positioning anchors set on the bottom of the cylinder and some balancing weights set on the bottom of the cylinder; a circular scraper is set on a base plate of the cylinder and connected to the middle of the base plate through a revolving shaft in a rotary manner; and some mud scraping holes distributed in a radiation shape are set on the scraper, wherein a scraper blade for rotary mud scraping which is extended downwards is set on a hole wall of the mud scraping hole, a vertical baffle extended upwards is set on the hole wall of the mud scraping hole opposite to the scraper blade, height of the lower scraper blade is bigger than height of the upper surface of the base plate and a mud inlet is set on a corresponding part to the mud scraping hole. The collector of surface sediments is characterized by simper operation, high stability, good reliability, high-quality sampling and efficient sampling.

The invention discloses a full wave inductance current sampling circuit, comprising a system power level circuit, a proportion MOS tube current sampling circuit, a voltage-current and current summation circuit, and a sampling direct current correction and sampling integration circuit. The first output terminal of the system power level circuit is connected to the first input terminal of the sampling direct current correction and sampling integration circuit through the proportion MOS tube current sampling circuit, and the second output terminal of the system power level circuit is in connection with the second input terminal of the sampling direct current correction and sampling integration circuit through the voltage-current and current summation circuit. The full wave inductance current sampling circuit can realize accurate full wave inductance current sampling through the system power level circuit, the proportion MOS tube current sampling circuit, the voltage-current and current summation circuit, and the sampling direct current correction and sampling integration circuit, obtain continuous sampling signals, effectively avoid burrs, and be widely applied to the electronic circuit field.

The invention discloses a sampling and collecting system of SO3 in wet method desulphurization system tail flue gas. The system includes a probe for acquiring wet flue gas, a heating device connected with the probe and used for heating the wet flue gas, a dedusting device connected with the heating device and used for removing solid particles comprising dusts and the like in the flue gas, a condensing device connected with the dedusting device and used for condensing sulfuric acid steam in the flue gas, an examining device connected with the condensing device and used for examining whether the sulfuric acid steam collected in the condensing device reaches saturation and collecting the sulfuric acid steam in the flue gas when the saturation is realized, a drier connected with the examining device and used for removing water in the flue gas, an adjusting valve connected with the drier and used for adjusting the flow velocity of the flue gas to ensure that sampling is constant speed sampling, a vacuum pump connected with an outlet of the adjusting valve and used for pumping the flue gas, and a wet gas meter connected with an outlet of the vacuum pump and used for determining the flow, temperature and pressure of the flue gas and discharging the flue gas.

A personal dust sampler for collecting airborne inhalable dust. A sampler body provides vertical elutriation by comprising an entry aperture at a distal end exposed to ambient air and having an inner diameter for air intake, and an air exit at a proximal end connected to a pump for drawing air through and along a longitudinal axis of the sampler body to filter media disposed therein for dust capture. A distance along the longitudinal axis between the filter media and the entry aperture defines an air intake length, where the length is greater than the inner diameter of the entry aperture. The air intake length could also be two, three or four or more times greater than the entry aperture inner diameter. The longitudinal axis could be arranged substantially vertically during use, so the entry aperture lies in a horizontal plane, simulating nose orientation and breathing through the nose.

The invention discloses a measurement method of a large gear free of installation and regulation, belonging to the field of gear measurement. The size and the weight of the large gear reach a hypernormal degree. According to the conventional measurement method, before measurement, a gear workpiece needs to be regulated and aligned, and time and labor are wasted in the regulation and alignment processes. According to the measurement method disclosed by the invention, a gear workpiece regulation and alignment process is removed, an inclination of a reference axial line of the workpiece relative to a measurement instrument is directly measured, theoretical measurement coordinates of a characteristic point and a characteristic line are measured and corrected through the inclination, and finally, the corrected measurement point coordinates are input into a measurement apparatus program for realizing right measurement sampling of the characteristic point and the characteristic line, and sampling data does not need to be subjected to data compensation, and is directly calculated by adopting the conventional error evaluation method. The measurement method is also suitable for occupations for locating the gear by using centres, and is capable of correcting a gear inclination error caused by misalignment of the upper centre and the lower centre, so that the accuracy of a measurement result is ensured.

The invention relates to multistage marine water quality stratified sampling equipment and a sampling method thereof. The multistage marine water quality stratified sampling equipment comprises a floating plate, a pay-off device and a sampling device, wherein the floating plate is of a rectangular structure, the pay-off device is installed at the upper end of the floating plate, the sampling device is arranged below the floating plate, and the sampling device is connected with the pay-off device through a steel wire rope. The problems as follows are solved: when the existing equipment is usedfor sampling the ocean water quality, the sampling effect is poor and the sampling is inaccurate, and stratified sampling cannot be effectively carried out on seawater with different depths, which isnot conducive to the study of ocean water quality; and the existing equipment cannot effectively seal the sampled seawater when sampling the ocean water quality, so that the sampled seawater is easilymixed with seawater in areas with different depths, the sample is inaccurate, and the accuracy of a water sample analysis result is influenced.

The invention discloses a system for confirming a memory controller clock calibration value. The system consists of an appointing device, a read-write device, a comparing device and a confirming device which are coordinated with each other. A first clock calibrating device is appointed with a first calibration value, and the first clock calibrating device is used for reading preset detection data which is written in a memory according to a calibrated clock signal output by the appointed first calibration value. Whether the clock signal calibrated according to the appointed first calibration value can ensure correct data sampling is judged by comparing whether the read detection data is consistent with the preset detection data. The process is repeated continuously, a first calibration value range which ensures the correct data sampling can be obtained, and any first calibration value can be taken from the range to be used as a finial calibration value of the first clock calibrating device. The invention also discloses a method for confirming the memory controller clock calibration value. The invention can confirm the clock calibration value ensuring the accurate data sampling independently and confirms fast.

A broadcast text data sampling apparatus comprises an A / D converter for sampling a broadcast text signal supplied from the outside, with a sampling clock of a predetermined frequency, to convert the text signal into digital data; a binarization circuit for converting the digital data into a binary signal; a sampling pulse generation circuit for detecting the cycle of clock run-in of the broadcast text signal from the binary signal, obtaining a text data sampling interval value on the basis of the clock run-in cycle, sequentially calculating the positions of data in the binary signal, which data are positioned at intervals close to the sampling interval value, starting from a predetermined sampling start position, and generating a sampling pulse that designates the calculated data positions as data sampling positions; and a sampling circuit for sampling the text data from the binary signal on the basis of the sampling pulse. Therefore, this data sampling apparatus is able to perform sampling of text data from plural types of text broadcastings having different transmission clock frequencies.

The invention relates to a static reactive power compensation device based on an energy method and a control method thereof, belonging to the technical field of power transmission and distribution. The invention comprises a mutual inductor group, a filtering and signal conditioning module, an A / D conversion module, a computing module, a memory module, a phase-locked loop circuit module, a communication module and a display and keyboard operation module. The invention can evaluate and analyze possibly potential dangers of a power grid by adopting energy function method, predict the influence on the stable operation of the power grid possibly resulted from faults by establishing an anticipated accident list, carry out scientific, effective and real-time analysis and evaluation on the power grid state and carrying out integral cognition on the power grid performance as complete as possible, thereby quantitatively evaluating the operation state level of the power grid; and the invention effectively avoids an algorithm from falling to local optimum by adopting an improved particle intelligent swarm algorithm based on a fuzzy control theory.

Provided herein are devices and methods for mounting variously configured medical imaging probes for imaging applications. In one aspect, a holding device allows for interfacing / holding most conventional ultrasound probes such that the probes may be attached to a positioning device using a common interface. As ultrasound probes come in various sizes and lengths, the device may adjust to different lengths, widths and shapes of different probes. Hence, the device may work in a substantially universal manner while securely holding probes with little wobble or other problems.