58results about How to "Extended sampling time" patented technology

The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may, for example, be positioned along an operating table, bed, a mattress or pad or a sheet and may be radiolucent. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored.

The invention relates to a method and a device for control on a central air conditioner cold water system based on tail end cold quantity active adjustment. The method comprises the following steps of when a system control strategy of an adjusting type temperature control value is adopted, firstly finding a tail end branch corresponding to the opening instruction maximum value Kmax of the adjusting type temperature control valve; then, enabling a central controller to control a frequency converter to synchronously adjust the rotation speed of an in-service cold water circulating pump, and then adjust and control the water supply pressure and flow quantity of the cold water system; and when the system control strategy of an on-off type temperature control valve is adopted, finding the maximum value of the valve opening instruction signal statistical value of an air conditioner room temperature controller in the system through comparing and calculation by the central controller, and judging if the system water pump needs to run at increased frequency or decreased frequency according to if the average value of n sampling arithmetic values is equal to 1 or not. The method has the advantages that through the analysis of the control strategy of the water pump of the existing air conditioner cold water system, the central controller adopts a comparing and control algorithm to control the state of the in-service water circulating pump in real time, the economic running of the cold water system of the central air conditioner system is realized, and the obvious energy-saving effect is realized.

The invention an electric-energy quality data compression and reconstruction method based on self-adaptive dictionary learning, and self-adaptive dictionary learning is used for sparse representation of electric-energy quality data. A lot of different types of electric energy quality data form a training sample set, and the completeness and redundancy of the training sample set are ensured; basic atom sparse codes which can represent the electric energy quality data is extracted from the training sample set adaptively, and a self-adaptive dictionary is obtained via iteration; a random Gauss matrix is used to carry out dimension-reducing measurement on electric energy quality test signals, and compression sampling is realized; and on the basis of compressed perception theories, the self-adaptive dictionary is used for sparse solution to obtain a sparse representation matrix of test signals, and the original signals are decoded and reconstructed. Thus, the electric energy quality data is compressed and sampled simply and reconstructed accurately, the sampling efficiency of the electric energy quality data is improved, and storage of redundant data is reduced.

The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may, for example, be positioned along an operating table, bed, a mattress or pad or a sheet and may be radiolucent. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored.

The invention discloses an asymmetric phase encoding ranging method applied to a laser radar system. The laser radar system uses a typical phase encoding method and has high system hardware demands. The method provided by the invention comprises the steps that a laser in the laser radar system emits a laser signal with constant intensity; a modulator carries out intensity modulation according to a modulation signal sequence; the modulation signal sequence is an m sequence; a demodulator carries out intensity demodulation on an echo signal according to a demodulation signal sequence; a strobe mode is used to control cumulative detection time and output of a detector; the detector outputs cumulated signals to a signal processor; the signal output order of the detector shows a correlation peak position, so that the signal processor directly determines phase difference between a demodulation signal and the echo signal; and according to the phase difference, target distance is calculated. According to the invention, the asymmetric phase encoding method is used to measure the target distance; the sampling rate requirement of the system on the detector is reduced; and the calculation amount of signal processing is reduced.

A multiphase power supply circuit comprises a PWM (pulse-width modulation) chip and a plurality of sub-circuits. Each sub-circuit comprises an inductor, a first resistor, a first capacitor, a differential line pair, a second resistor and a second capacitor. The first resistor and the first capacitor in each sub-circuit are serially connected, and then are parallelly connected with the inductor in the sub-circuit. The differential line pair in each sub-circuit comprises a first differential line and a second differential line. The first differential line in each sub-circuit is connected between a joint of the corresponding first resistor and the corresponding first capacitor and a terminal of a current sensor of the PWM chip. One end of the second resistor in each sub-circuit is electrically connected to a joint of the corresponding capacitor and the corresponding inductor, one end of the second resistor in each sub-circuit is serially connected with the corresponding second capacitor while the other end of the second capacitor is ground, the second differential line in each sub-circuit is electrically connected between a joint of the corresponding second resistor and the corresponding second capacitor and another terminal of a current sensor of the PWM chip, and the ratio of capacitances of the second capacitors of the sub-circuits is equal to that of lengths of the corresponding differential line pairs. The circuit can prolong sampling time of the long differential line pairs, and increases sampling accuracy.

To provide a rotation detecting system of a type having a high detecting resolution, in which the rotational position can be detected accurately, in which a sufficient gap can be secured between the sensor and the rotating body and which is effective to simplify assemblage and processing to thereby reduce the manufacturing cost, the rotation detecting system is provided with a multiplying section 4 for multiplying the pulses, generated by the sensor 3, by a multiplication factor to form multiplied pulses Pb and a speed detecting section 5 for detecting an period average speed of the encoder 71 during the interval, in which the latest N pieces of the multiplied pulses Pb have been generated where N represents the multiplication factors by which the multiplied pulses Pb have been multiplied.

The invention discloses an emergency cardiovascular care network system and a classification and early warning method thereof. The system comprises a doctor client, an emergency center server system and a 12 lead electrocardiogram collection module, the 12 lead electrocardiogram collection module sends collected information to a medical tablet personal computer through Bluetooth, and transmits thecollected information to the emergency center server system through a 4G wireless network, and the emergency center server system is connected with the medical client. Accordingly, electrocardiogramabnormality symptoms of patients can be classified and pre-warned according to emergencies, medical specialists are helped to judge cardiovascular diseases in the early stage, and the medical treatment time of the patients suffering from the cardiovascular diseases is greatly shortened.

The A / D converter has first and second PPDC circuits (pulse-phase-difference coding circuits). The first PPDC circuit performs A / D conversions on the reference voltage and on the voltage signal amplified by an amplifier in an alternating sequence, the amplifier using the reference voltage as a potential base thereof. The second PPDC circuit performs A / D conversions always on the reference voltage. The A / D-converted data set of the voltage signal outputted from the first PPDC circuit is corrected depending on the difference between the A / D-converted data set of the reference voltage outputted from the second PPDC circuit when the first PPDC circuit A / D-converts the reference voltage and the A / D-converted data set of the reference voltage outputted from the second PPDC circuit when the first PPDC circuit A / D-converts the voltage signal.

The invention discloses a phase encoding laser imaging radar based on microwave photonic signal processing. The detection of a phase encoding signal requires rapid signal sampling of a high speed detector. The laser signal sampling speed of an array detector applied to a laser imaging radar is limited by a production process, which cannot meet the signal sampling speed requirement of a large-array phase encoding laser radar. The resolution of phase encoding laser imaging radar ranging is low. According to the invention, an optical device is used; a microwave photonic signal processing method is used to complete the convolution process of an echo signal and a reference signal; the convolution process comprises the product process of the echo signal and the reference signal in a laser modulator / demodulator and the accumulation process of signal product in an accumulation type detector; the limits of the sampling rate of the detector and total signal bandwidth on range resolution is broken; the requirement on the sampling rate of the detector is reduced; and the range resolution and the signal processing rate of a laser radar system are improved.

The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may, for example, be positioned along an operating table, bed, a mattress or pad or a sheet and may be radiolucent. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored.

The A / D converter has first and second PPDC circuits (pulse-phase-difference coding circuits). The first PPDC circuit performs A / D conversions on the reference voltage and on the voltage signal amplified by an amplifier in an alternating sequence, the amplifier using the reference voltage as a potential base thereof. The second PPDC circuit performs A / D conversions always on the reference voltage. The A / D-converted data set of the voltage signal outputted from the first PPDC circuit is corrected depending on the difference between the A / D-converted data set of the reference voltage outputted from the second PPDC circuit when the first PPDC circuit A / D-converts the reference voltage and the A / D-converted data set of the reference voltage outputted from the second PPDC circuit when the first PPDC circuit A / D-converts the voltage signal.

Systems and methods for thermal sensing and imaging using the electro-optic effect. A thermal detection system comprises a temperature sensing element that includes an electro-optic (EO) material layer having a length axis and characterized by a temperature dependent index of refraction, an electrical mechanism for inducing a chance in the index of refraction, a laser beam propagating lengthwise through EO layer for probing the refraction index change, and a light intensity meter for measuring a laser beam intensity change caused by the temperature dependent refraction index change. Thermal imaging is obtained by using a pixel array of such thermal sensing elements. The intensity reading may be done in either a cross-polarizer or a Mach Zehnder Interferometry reading configuration.

A system of sampling interface for an optical pick-up head includes an optical pick-up head, a switch circuit and a sample and hold circuit. The optical pick-up head outputs one of a reading voltage and a writing voltage. The switch circuit includes a NMOS. The NMOS has a first source / drain for receiving the reading voltage and the writing voltage, and has a gate for receiving the gate voltage. The NMOS turns on the first source / drain and the second source / drain when receiving the reading voltage, and turns them off when receiving the writing voltage. Finally, a sample and hold circuit connects to the second source / drain of the NMOS for sampling and holding the reading voltage.

To provide a rotation detecting system of a type having a high detecting resolution, in which the rotational position can be detected accurately, in which a sufficient gap can be secured between the sensor and the rotating body and which is effective to simplify assemblage and processing to thereby reduce the manufacturing cost, the rotation detecting system is provided with a multiplying section 4 for multiplying the pulses, generated by the sensor 3, by a multiplication factor to form multiplied pulses Pb and a speed detecting section 5 for detecting an period average speed of the encoder 71 during the interval, in which the latest N pieces of the multiplied pulses Pb have been generated where N represents the multiplication factors by which the multiplied pulses Pb have been multiplied.

The invention discloses a preparation method of a soluble inorganic phosphorus and arsenic adsorption membrane. According to the preparation method of the adsorption membrane, cerium oxide nanoparticles are dispersed in an acrylamide solution, and acrylamide polymerization reaction is carried out to fix the nanoparticles uniformly in polyacrylamide gel. The preparation steps include: dispersing cerium oxide nanoparticles into the acrylamide solution, adding ammonium persulfate and tetramethylethylenediamine, mixing the substances evenly, then injecting the mixture into a two-glass plate gap clamping a U-shaped sheet, conducting horizontal placement at room temperature for 30min, then opening the glass plates and taking out a gel membrane, soaking the gel membrane in deionized water for 24hto remove unreacted reagent, cutting the gel membrane to a circle with a diameter of 2.5cm to make the adsorption membrane. The preparation method of the adsorption membrane provided by the inventionhas the characteristics of simple operation and good repeatability. The adsorption membrane has large adsorption capacity and good selectivity on soluble inorganic phosphorus and arsenic, can be preserved for a long time in a solution, and has broad application prospect in the fields of analytical chemistry and environmental analysis.

Hyperbolic wave forward difference self-scanning direct-view synthetic aperture laser imaging radar comprises a continuous laser source, an emission polarization beam splitter, a left arm rear space phase converter, a left arm aperture diaphragm, a left arm front space phase converter, a right arm rear space phase converter, a right arm aperture diaphragm, a right arm front space phase converter, an emission polarization beam combiner, an emission primary mirror, a receiving telescope, a polarization interference autodyne photoelectric receiver, an AD converting and preprocessing device, an echo data storer and a computer. According to the hyperbolic wave forward difference self-scanning direct-view synthetic aperture laser imaging radar, a light modulator is not needed, synchronous correlation of light and electrons during emission and receiving is not needed, the structure is quite simple, the influence of echo delay is avoided, system receive sensitivity is quite high, and the inherent advantages of direct-view synthetic aperture laser imaging radar are reserved. The hyperbolic wave forward difference self-scanning direct-view synthetic aperture laser imaging radar is suitable for observation and imaging from space to earth under various relative movement speeds and operating ranges and detection of spatial moving targets in the aerospace field and is based on the retrosynthesis aperture principle.

A circuit and method for providing an improved current monitoring circuit for a switching regulator. A circuit providing switching regulation with an improved current monitor, comprising a pulse width modulation (PWM) controller configured to provide P- and N-drive signals, an output stage connected to said PWM controller and configured to provide switching, comprising a high-side and low-side transistor, driven by said P- and N-drive signals, respectively, a sense circuit configured to provide output current sensing from the output stage during a sampling period when the N-drive signal is active, and a sampling timing generator configured to provide a an n-sampling signal, nsample, to the sense circuit, wherein a start of the n-sampling signal is delayed by a first delay after the sampling period and the n-sampling signal is ended prior to an end of the sampling period by a second delay.

The invention discloses a data acquisition and storage system and method based on double sampling rates. A high-sampling-rate data stream is converted into low-sampling-rate data through a data extraction logic module, the high-sampling-rate data stream and the low-sampling-rate data stream are connected to a storage selection logic module at the same time, then one of the high-sampling-rate data stream and the low-sampling-rate data stream is selected through logical selection to be data to be stored and transmitted to a storage control logic module, and the storage control logic module stores the data to be stored in a data storage unit so that double-sampling-rate storage can be achieved. By the adoption of the system and method, high time resolution on concerned details can still be maintained on the basis that sampling time is prolonged as much as possible, and the contradiction between sampling time and sampling rate can be overcome; the high sampling rate and the low sampling rate can be set as needed, switching between the sampling rates is decided by a triggering condition set by a user, switching is conducted automatically, and the system is convenient to use.

Disclosed herein are a Bluetooth signal receiving device and method for receiving a Bluetooth signal. The Bluetooth signal receiving device includes a discriminator circuit and a correlator circuit. The discriminator circuit generates a baseband signal by performing frequency shift demodulation on a received signal, and generates a frequency proportion signal having a value proportional to the frequency of the baseband signal. The correlator circuit detects a packet assigned to the Bluetooth signal receiving device by comparing the frequency proportion signal with an access address received from a link layer. The Bluetooth signal receiving device may detect a packet, assigned to the Bluetooth signal receiving device itself, by using access address information of a link layer.

The invention discloses a BIM-based automatic borehole perpendicularity monitoring method. The method comprises the steps of 1, constructing a borehole perpendicularity detection mechanism; 2, settinga unit declining distance of a tilt angle sensor; 3, enabling the tilt angle sensor to decline; 4, obtaining the declining data of the tilt angle sensor; 5, repeating the steps 3 and 4 for n times toobtain the tilt angle data of a reinforcement cage at n different height positions declining along the height direction of a borehole; 6, adjusting the position of the tilt angle sensor; 7, enablingthe tilt angle sensor to ascend; 8, obtaining the ascending data of the tilt angle sensor; 9, repeating the steps 7 and 8 for n times to obtain the tilt angle data of the reinforcement cage at n different height positions ascending along the height direction of the borehole, and calculating a measurement data deviation distance; 10, drawing an average deviation distance curve chart; and 11, establishing a BIM model of the borehole and visually monitoring the perpendicularity of the borehole. Through establishing the BIM model of the borehole and visually monitoring the perpendicularity of theborehole, the technicians are clear with the inclination states of the pile holes at a glance.

A method is provided for improved visualization of digitally displayed values that change rapidly, based on the human ability to perceive only a certain amount of change within a specific time-frame. The changes to the value are displayed so that, whenever possible, only one digit changes within the time-frame thought to be ideal for a user to perceive the change of a single digit. The actual value displayed will follow the true value as closely as possible, hence, in most cases, only the digit that moves the displayed value closest to the true value will trigger a change during a perception time frame. If the true value stops changing, the displayed value will, by this fashion, completely catch up with the true value in a prompt manner and exactly match it. If the true value oscillates rapidly, the oscillation will only be displayed to the extent that it allows the viewer to perceive the changes. Only the amount of change that can be perceived is actually shown, thus greatly improving the readability of digital displays.

The invention provides a spiral screwing type sampler. The spiral screwing type sampler comprises an upper sampling rod and a lower spiral lifer; the spiral lifer comprises a spiral central spindle and a spiral blade wound outside the spiral central spindle; and the upper surface of the spiral blade for loading sampled materials extends in a shape of sunken circular arc surface along the radial direction of the spiral lifter. Compared with the prior art, the spiral screwing type sampler and the sampling device have the advantages of greatly reducing failure rate, along with simple structure, low downgoing resistance, high sampling speed, high reliability, convenience in equipment maintenance, and high working efficiency and the like.

An agitated flow cell had a micro / miniature vibrator device such as pager motor to agitate the flow cell and its associated sensor to bring fresh analyte to the sensor surface without the need for microfluidic channels, pumps or valves. The agitated flow cell improves the confidence measure of a given sample reading by directing the flow of sample to the sensor / sample interface in a substantially shorter period of time than that required by flow cells that rely on diffusion of analyte molecules through the liquid depletion region in order to bring the sample reliably in contact with the sensor's biosensing film.

A circuit and method for providing an improved current monitoring circuit for a switching regulator. A circuit providing switching regulation with an improved current monitor, comprising a pulse width modulation (PWM) controller configured to provide P- and N-drive signals, an output stage connected to said PWM controller and configured to provide switching, comprising a high-side and low-side transistor, driven by said P- and N-drive signals, respectively, a sense circuit configured to provide output current sensing from the output stage during a sampling period when the N-drive signal is active, and a sampling timing generator configured to provide a an n-sampling signal, nsample, to the sense circuit, wherein a start of the n-sampling signal is delayed by a first delay after the sampling period and the n-sampling signal is ended prior to an end of the sampling period by a second delay.

The invention discloses a slope runoff and water chemical index comprehensive determination method. The method comprises the following steps: I, establishing a slope runoff and water chemical index comprehensive determination apparatus comprising a water pipe, a circular ring, a cylindrical or hemispherical shell, a skip-bucket rain gauge, a disc, a metal net, a cubic shell, a funnel, a 90-degree elbow, a horizontal PVC pipe, a tee joint, an inverted U-shaped pipe, a movable choke plug, a variable-diameter pipe head, a water collection bottle, a disc base and inner threads; II, introducing slope runoff into the skip-bucket rain gauge by virtue of the water pipe, after the rain gauge is fully filled with the water, enabling the rain gauge to roll automatically, enabling waste water to flow through the metal net, the funnel, the 90-degree elbow, the PVC pipe, the tee joint and the inverted U-shaped pipe to enter the water collection bottle so as to be used for the subsequent water quality determination and analysis, opening the movable choke plug at the tee joint, directly inserting an electric conductivity meter, and measuring the water temperature and the electric conductivity in real time. According to the method, the collection of the slope runoff and the water sample determination are integrated, the measurement system is comprehensive, and the collection and measurement accuracy can be improved.

Improve efficiency of sampling of an A / D converter while suppressing power consumption. A packet receiving section receives six packets included in one frame transmitted from a base station, a sample timing control section shifts sample timing of the A / D converter by a half clock between former three packets and latter three packets out of six packets included in one frame.

The invention relates to a cryogenic storage device and to a method for operating a cryogenic storage device, particularly for cryogenic storage of biological samples, comprising a sample carrying device that is set up to accommodate samples, a cryogenic container that is set up to accommodate the sample carrying device, a container cooling device with which the cryogenic container can be cooled, an intermediate storage container that is set up for intermediate storage of the sample carrying device, a transport device with which the sample carrying device can be moved between the cryogenic container and the intermediate storage container and a sensor device with which at least one operating parameter of the cryogenic storage device can be registered. The transport device is set up to be activated in dependence on an output signal from the sensor device upon registering a predetermined operating condition of the cryogenic storage device, so that the sample carrying device is moved from the cryogenic container to the intermediate storage container. Additionally or alternatively, an intermediate storage cooling device that is set up for cooling the intermediate storage container can be activated in dependence on an output signal of the sensor device.

The invention relates to a dilution sampling device for flue gas under the high-humidity condition and a sampling method of the dilution sampling device. A PM10 whirlwind cutter, a first-level PM2.5 whirlwind cutter, a flue gas insulation and dehumidification device, a sampling airflow flowmeter, a first-level diluter, a second-level diluter, a second-level PM2.5 whirlwind cutter, a particulate filter, a flue gas mixing device, a flue gas flowmeter, a flue gas flow control valve and a sampling pump are connected in sequence, compressed air produced by an air compressor is divided into three paths through a compressed air buffering and processing device, one path is connected with the flue gas mixing device through a drying air flow control valve, a drying airflow flowmeter and the flue gasinsulation and dehumidification device, one path is connected with the first-level diluter through a first-level dilution airflow control valve and a first-level dilution airflow flowmeter, and one path is connected with the second-level diluter through a second-level dilution airflow control valve, a second-level dilution airflow flowmeter, the first-level diluter, and a second-level dilution airflow pressure gage. According to the dilution sampling device for the flue gas under the high-humidity condition, flue gas capturable particulate matters and condensable particulate matters under thehigh-humidity condition are sampled.