1646 results about "Electric parameter" patented technology

A system and method to measure and control power usage within a residential or commercial building plurality having of electrical circuits electrically connected to an over-current protection device to ensure optimum energy usage therein. The system and method includes a power measurement and control device electrically connected to one of the electrical circuits by which a load draws power that is operable to (i) measure an electrical parameter of the electrical circuits, (ii) compare the measured electrical parameter to an ideal electrical parameter, and (iii) adjust power supplied to one or more of the electrical circuits based on the comparison of the measured electrical parameter and the ideal electrical parameter via a wall socket. The adjustment of power may be automatic or manual deactivation, decrease, and/or increase of power supplied to the electrical circuits via the wall socket so that such is equivalent to or less than the ideal electrical parameter.

A portable infusion monitoring system displays the liquid level and flow rate data during infusion process, as well as gives an alarm for patents and nurses in hospital as the medical liquid in an IV bottle drops to a predetermined low level. This system comprises a set of liquid level sensor, a microprocessor, and a monitor terminal. The liquid level sensor generates an electric signal related to the liquid level inside the IV bottle. The microprocessor analyzes the electric parameters detected from the electric signal, and obtains the liquid level data. The liquid level data are sent to the monitor terminal for display, and an alarm is activated when the medical liquid inside the IV bottle drops to a predetermined low lever. Further functions of the monitor terminal includes an automatic switch to cut off the IV feeding process and send the alarm signal to a nurse station through signal network by wire or wirelessly. Several interference filtering methods are applied to increase signal/noise ratio, and therefore warrant the operation reliability.

An electrolytic sensing system for measuring a blocking signal allows for controlled translocation of a molecule, such as DNA, through a fluid channel. A substantially constant electric field supplied by a DC source is applied across the fluid channel and induces translocation of the molecule within the system. An oscillating electric parameter (e.g. current or voltage) supplied by an AC source is also applied across the fluid channel as a means for measuring a blocking signal. The substantially constant electric field can be altered to provide more detailed control of the molecule and, optionally, run a select portion of the molecule through the channel multiple times to provide numerous signal readings. A temperature control stage cools the system, providing further control of molecule translocation. A modified or non-modified protein pore may be utilized in the fluid channel. The system allows for long DNA strands to be sequenced quickly without amplification.

A time reversal process for determining a fault location in an electrical power network comprising multi-conductor lines, comprises measuring at an observation point located anywhere along one of the multi-conductor lines, for each of the conductors of the multi-conductor line, respectively a fault-originated electromagnetic transient signal; defining a set of guessed fault locations each having a different determined location in the electrical power network, and each of the guessed fault locations is attributed a same arbitrary fault impedance; defining a network model for the electrical power network, based on its topology and multi-conductor lines electrical parameters capable of reproducing in the network model the electromagnetic traveling waves; and computing for each conductor a time inversion of the measured fault-originated electromagnetic transients signal. The time reversal process method further comprises, as detailed herein, back-injecting a computed time inversion; calculating fault current signal energy; and identifying the fault location.

An optimizing design method for a chassis structure of electronic equipment is disclosed, including: investigating from the point of view of mechanical, electric and thermal three-field coupling, determining the preliminary design size of the chassis, performing a mechanical analysis by using the software Ansys; converting the mesh model among the three-fields, obtaining the mesh model used for the electromagnetic and thermal analyses; setting the thermal analysis parameters, performing the thermal analysis by using the software IcePak; determining a resonance frequency of the chassis and an electric parameter of the absorbing material, performing an electromagnetic analysis by using the software FeKo; correcting the analysis result by sample testing; determining whether the chassis satisfies the design requirement, if it satisfies the requirement, the optimizing design will be finished, otherwise, modifying the preliminary CAD model, the electromagnetic analysis parameter and the thermal analysis parameter, repeating the above processes until the requirement is satisfied.

A device and method for determining an excretion flow rate of a body fluid of a person or an animal. The device includes an absorbent element equipped with at least three electrodes connected to a measuring system for measuring at least one electric parameter so as to be electrically coupled two by two and to form at least two pairs of electrodes, separating systems which include an inlet opening exposing a part of the absorbent element so as to create a diffusion path. At least two of the electrodes are first electrodes placed along the diffusion path in such a way that each of the first electrodes is at a distance from the inlet opening representative of a volume of absorbed fluid.

The invention discloses a method for preparing an antisepsis and antiwear ceramics coating layer on the surface of alloy through microarc oxidation. The method includes three steps of collocating electrolyte, arranging power electric parameters and microarc oxidation treatment; wherein, the component concentrations of the electrolyte are sodium silicate of 20 to 100g/L, sodium hydroxide of 5 to 10g/L and organic amine additive of 5 to 15ml/L; the current density of unit area is 50 to 100A/centiare; the pulse frequency is 100 to 700Hz; the pulse dutyfactor is 20 to 90 percent; the temperature of the electrolyte in the microarc oxidation treatment is not higher than 45 DEG C. The method needs lower unit power density and has fast film forming speed to prepare the ceramics coating layer on the surface of aluminum and magnesium alloys; the method adopts 100KVA power which can treat at least 2 centiares of the surface area of the aluminum alloy for one time; the growing speed of the ceramics coating layer can reach 1 to 1.5 micron/min. The formed ceramics coating layer is uniform and compact; the rigidity of the aluminum alloy can reach 1200 to 1300Hv.

The invention discloses a welding quality monitoring system which comprises a signal acquiring module, a signal conditioning module, a microcontroller and transceiver module and an upper computer. The signal acquiring module is arranged in a welding machine and acquires signals to be detected during welding, the signal conditioning module is connected with the signal acquiring module, the microcontroller and transceiver module are connected with the signal acquiring module, and the upper computer is connected with the microcontroller and transceiver module. The welding quality monitoring system can utilize a signal acquiring circuit and a PIC (positive-impedance converter) single-chip microcomputer to monitor and store intrinsic electric parameter signals in real time during welding, communicate with the upper computer and realize network-based management.

The invention discloses an intelligent control system of an air conditioner. The intelligent control system comprises a master controller, a sensor, an output module and a transmission module. The sensor comprises an electric parameter detection module, a temperature detection module and a humidity detection module. The electric parameter detection module, the temperature detection module and the humidity detection module are in electrical connection or wireless communication connection with the master controller respectively. The master controller comprises one or more of an energy saving control module, a fault diagnosis module and a comfort degree adjustment module. By the intelligent control system of the air conditioner, effective intelligent control of the air conditioner can be realized, namely effective energy saving control, comfort degree adjustment or timely fault detection of the air conditioner, diagnosis of fault causes and soft recovery can be realized.

A method for determining at least one physiological parameter of a driver, pilot or transport of defence vehicle or system operator, comprising: a) injecting or inducing current into said individual; b) measuring in said individual an electrical parameter indicating their impedance, comprising: b1) measuring the electrical parameter with at least two pairs of injector-detector electrodes; b2) determining the impedance signal from the electrical parameter measured; b3) from amongst the impedance signals determined, identifying those with a physiological origin; and b4) selecting the pair of electrodes that produce the best quality impedance signal; and c) obtaining said physiological parameter from the best quality impedance signal.

The invention relates to a method for diagnosing and classifying faults of photovoltaic power generation arrays on the basis of particle swarm optimization support vector machines. The method particularly includes steps of S1, acquiring a plurality of electric parameters of the photovoltaic power generation arrays to obtain electric parameter sample combinations when the photovoltaic power generation arrays work at the maximum power points; S2, normalizing each electric parameter sample; S3, acquiring test sample combinations according to normalized electric parameter sample combinations; S4, computing the optimal SVM (support vector machine) kernel function parameters g and penalty parameters c by the aid of PSO (particle swarm optimization) algorithms; S5, training the samples according to the optimal kernel function parameters g and the penalty parameters c to obtain training models; S6, detecting and classifying the faults of the photovoltaic power generation arrays by the aid of the training models. The method has the advantage that the photovoltaic power generation array fault detection and classification accuracy can be effectively improved by the aid of the method.

An embodiment of the invention is an arrangement that includes a plurality of sensors and a processing circuit. Each of the plurality of sensors is operably coupled to measure an electrical parameter of a refrigeration system. Each sensor is coupled to one of a plurality of wireless transmission devices. The processing circuit is configured to receive information based on the electrical parameters of the refrigeration system received from the wireless transmission devices. The processing circuit is programmed and/or otherwise configured to: receive a first set of information comprising electrical parameters corresponding to a set of refrigeration system devices from the wireless transmission devices, the first set of information corresponding to a first time period; receive a second set of information comprising electrical parameters corresponding to the set of refrigeration system devices from the wireless transmission devices, the second set of information corresponding to a second time period; and store the first set of information and the second set of information in a memory.

A vacuum plasma processor includes an electrode array with plural mutually-insulated electrodes forming a bottom or top electrode of the plasma processor. When the electrode array is part of the bottom electrode, the electrodes of the array are parts of a thermoelectric, Peltier effect arrangement responsive to localized temperature sensors and are parts of an electrostatic chuck. The thermoelectric arrangement controls localized temperature of workpieces and the chucking voltages indicate workpiece position relative to a workpiece holder including the electrodes. The electrodes of the arrays are coupled to circuitry for determining and/or controlling at least one localized plasma electric parameter at different locations of a workpiece and/or the plasma. The circuitry simultaneously supplies RF power having differing frequencies and/or power levels to different electrodes of the arrays and includes separate matching networks connected to the different electrodes of the array.

The invention provides an intelligent remote monitoring box-type substation, which comprises a 6-10kV high-voltage circuit breaker, a distribution transformer, a low-voltage main switch control cabinet, a low-voltage reactive compensation cabinet, a low-voltage branch switch control cabinet, a metering device, a temperature measuring device, an anti-theft device, a remote automatic control terminal, a power substation computer connected with a two-way communication module, a power manager mobile phone and a mobile communication base station, wherein the remote automatic control terminal comprises a singlechip circuit, an electric parameter detection circuit, a harmonic detection and analysis unit circuit, a transmitting and receiving communication module, an output control signal circuit, a switch state detection circuit and a data communication interface circuit; and the singlechip circuit is respectively connected with the electric parameter detection circuit, the harmonic detection and analysis unit circuit, the switch state detection circuit, the output control signal circuit, the data communication interface circuit, and the transmitting and receiving communication module. The box-type substation has the advantages of practicability, economy, convenient use, high-efficiency operation and suitability for national conditions.

The invention relates to the technical field of petroleum well logging, in particular to a method for determining litho-electric parameters, which comprises the following steps: 1), collecting a serial rock core of a measured area to conduct a test to calculate the porosity Phi and permeability K of the rock core; measuring a nuclear magnetism T2 spectrum amplitude value of the rock core collected by the step 1) and a corresponding sampling time value T2i of the nuclear magnetism T2 spectrum amplitude value; converting the porosity Phi of the rock core obtained by step 1) and the corresponding T2i spectrum amplitude value of the T2i time value obtained by step 2) into the corresponding porosity Phii of the T2 spectrum amplitude value; and calculating a bond index m and a saturation exponent n. The method of the invention can accurately and quickly obtain the m value and the n value, overcomes the difficulty that an experiment cannot be performed to calculate the litho-electric parameters in a laboratory according to a standard flow in a relatively short time, can timely meet requirements of practical production and has a relatively good application result.

The invention relates to a method for setting a high-pressure high-power thyristor electrothermic model and a simulating method. In the invention, first a thermal impedance model of a thyristor is calculated and set according to the finite element method, and a Foster network thermal impedance model is expressed by the identical transformation, subsequently a thyristor equivalent electric model is set by using the mathematical method. The loss Pave(t) is determined by the switch-on forward voltage drop Vtm and the working current IA, an electrothermic model of the thyristor is set by connecting the relation of the variants such as the switch-on forward voltage drop Vtm, the working current IA, the loss Pave(t), the junction temperature TJ and the like, then the simulation is conducted on a Pspice software. The model of the invention contains a thermodynamics and electrics model, which can provides the dynamic relationship between the heating parameters and the electric parameters, can be used for simulating the transient and steady junction temperature change and predicting whether the thyristor works in the safe area, also used for insulating the junction temperature change under the sine semi-wave surge current surge and predicting whether the thyristor fail.

The invention provides a consumption and junction temperature simulation temperature for a power module. The consumption and junction temperature simulation system comprises a user interface unit and a background processing unit, wherein the user interface unit is used for receiving electric parameters and heat parameters of the power module, a model of the power module selected by a user, and a control algorithm used by the power module; the background processing unit is used for calculating consumption and junction temperature of the power module according to the electric parameters and the heat parameters of the power module, the model of the power module and the control algorithm used by the power module, and used for displaying the consumption and the junction temperature of the power module through the user interface unit. By adopting the consumption and junction temperature simulation system of the power module, calculation on the consumption and the junction temperature of the power module can be conveniently and rapidly achieved, precise results of the consumption and the junction temperature can be acquired, and convenience can be brought for engineers to simulate the thermal reliability situation of a system in circuit design.

The invention discloses a sensitiveness matrix of voltage phasor obtained through flow equation, and an estimation method which includes that dynamic actual measurement data and power system data acquisition and monitoring system SCADA data or state estimation data mounted with PMU nodes are adopted to estimate the dynamic process without PMU node in real-time. The method adopts the sensitiveness relationship of voltage variations among nodes derived from flow Jacobian matrix, also adopts the SCADA or initial values of state estimation and the voltage dynamic measurement values mounted with PMU nodes to estimate the dynamic variation process of other voltage phasors without PMU node. The dynamic variation processes of electric parameters such as current, power and frequency in power grid are derived according to circuit principle according to the voltage phasors and network parameters of each node. The estimation method effectively solves the difficult problem of observing the dynamic process of the non-PMU measure point when the power grid PMU is in adequate configuration situation.

Wherein, using electric excitation and electric parameter measurement to analyze material parameters and extract on-line; applying dc, ac and transient voltage or current to the MEMS device to force target generating opposite action and changing electric parameters (I, R, U and C); measuring parameters, and obtaining the required parameters (R, E, F, etc) according to software.

The invention discloses a pumping unit jig frequency, balance real-time capacity adjusting method and a device of the pumping unit jig frequency, balance real-time capacity adjusting method, and belongs to the field of oilfield digital construction and management. A traditional parameter adjustment method is changed, the problems of parameter adjustment hysteretic quality, high staff labor intensity and incapable expression of oilfield potential to the largest extent are solved, and oilfield production efficiency and oilfield digital management level are improved. Due to the fact that pumping unit working conditions are analyzed in real time and a parameter is intelligently adjusted according to measured real-time data, a pumping unit can operate under a reasonable working system, the oilfield potential is expressed to the largest extent, and delicacy management of an oilfield is achieved. Due to the fact that indicator diagram data and electric parameter data are collected in real time and rotating speed of a motor is controlled through a digital pumping unit integrated control device according to system efficiency optimized jig frequency, and stepless jig frequency is adjusted. Balance degree is calculated through current and power obtained in real time, balance of the pumping unit is adjusted through a screw balance adjustment device, and therefore the balance of the pumping unit is adjusted, the pumping unit keeps operating under an optimized production parameter, and the oilfield potential is expressed to the largest extent.

A facility for selecting and refining electrical parameters for processing a microelectronic workpiece in a processing chamber is described. The facility initially configures the electrical parameters in accordance with either a mathematical model of the processing chamber or experimental data derived from operating the actual processing chamber. After a workpiece is processed with the initial parameter configuration, the results are measured and a sensitivity matrix based upon the mathematical model of the processing chamber is used to select new parameters that correct for any deficiencies measured in the processing of the first workpiece. These parameters are then used in processing a second workpiece, which may be similarly measured, and the results used to further refine the parameters. In some embodiments, the facility analyzes a profile of the seed layer applied to a workpiece, and determines and communicates to a material deposition tool a set of control parameters designed to deposit material on the workpiece in a manner that compensates for deficiencies in the seed layer.

The invention discloses a street lamp fault monitoring system. Electric parameters of each street lamp are acquired through a node controller, fault type information is generated through the electric parameters, fault information comprising the fault type information, the generating time of the fault type information and identification information of the node controller are forwarded to a street lamp server through a centralized controller, and the street lamp server acquires position information corresponding to the fault information and sends the fault information and the position information corresponding to the fault information to the monitoring terminal. The information sent by the street lamp server to the monitoring terminal comprises the fault information and the position information corresponding to the fault information, so that management personnel can acquire the fault information of a street lamp in real time through the monitoring terminal and can know the position of the street lamp with faults without conducting routine inspection on a street, the problems that management and maintenance working load of a public illumination system is large, and leakage is easy to cause are solved.