38 results about "Independent measure" patented technology

Security scanning devices based on electrical tomography, including tomography systems based on the measurement of capacitance (ECT) and electromagnetic tomography (EMT), in combination with knowledge-based image analysis and understanding. Each device includes a sensing head or transducer, sensing electronics, image reconstruction and image analysis microprocessor, a display unit and accompanying software for identifying dangerous materials and items. The security scanning devices are employed for obtaining multiple independent measurements and enable implementation of data fusion to combine the complementary sensitivity of ECT and EMT to different material properties, while providing architecture to implement image knowledge bases, which characterize objects, whose image attributes are acquired from multiple sensors.

The invention relates to a direct image reconstruction method based on the capacitance tomography of a round sensor. The method comprises the following operation steps: 1. N electrodes of an ECT sensor, which are arranged on the same cross section, are counterclockwise marked as electrodes i (i is larger than or equal to 1 and is smaller than or equal to N) and a traditional 1-by-1 excitation measuring mode is adopted, i.e. a scanning process comprises N-1 actions; 2. measured capacitance values are firstly pre-treated by linear transform to obtain N*(N-1) / 2 independent measured charge change values; 3. the scattering transformation t(s) of discrete electrodes is calculated; and 4. the specific inductive capacity variation of any point is rebuilt. The invention aims at a round measuring region, overcomes the defects that a traditional algorithm needs to calculate a sensitivity matrix and can not independently calculate the rebuilding result of a subregion, directly rebuilds images according to capacitance measuring values and can directly rebuild images in the subregion. The method has high real-time performance, can be popularized to ECT and has important practical values and application prospects.

A network application performance measuring method which supports the application of high bandwidth real-time video of internet belongs to the technical field of bidirectional transmission performance measurement of IPv4 / IPv6 internet. The invention is characterized in that a random data flow which simulates the virtual real-time video or virtual real-time video data flow is adopted as a ''probe'', a network which combines a user application system with a measuring server and is based on an active mode and a reflection mode and an application performance measuring method thereof, a network which combines the client system with the measuring server and is based on the reflection mode and the application performance measuring method thereof, and the invention has the functions of subscriber identification and DOS attack prevention. The invention effectively realizes the intercommunication of the network measuring method which supports the application of high bandwidth real-time video and the application system. The description languages of the video application subscriber, the application system engineer and the network engineer to the network problem are unified. A real-time automatic and independent measuring environment is established. The criterion is provided for quickly finding out the bandwidth bottleneck of network transmission for diagnosing the failure and settling the problem.

A computer-implemented method of analyzing a dataset of pharmacovigilance data, includes determining a sample size-independent measure of association between two conditions of interest in the dataset of pharmacovigilance data; using a hypergeometric distribution to determine a measure of statistical unexpectedness between the conditions of interest in said dataset, wherein the distribution is based on an urn model under a hypothesis that the conditions are statistically independent; and displaying the measure of association with the measure of the statistical unexpectedness to identify a significant association between conditions of interest.

The invention discloses a high-speed C reactive protein analyzer. The high-speed C reactive protein analyzer comprises a machine frame and a machine shell and is characterized in that a measuring rotating disk and a motor driving the measuring rotating disk are arranged at the bottom of the machine frame; a plurality of measuring units are arranged on the outer circle of the measuring rotating disk; each measuring unit comprises a preprocessing module and a measuring module; the portion, on the periphery of the measuring rotating disk, of the machine frame is provided with a reagent adding station, an automatic two-dimensional arm with a sampling needle and a manual two-dimensional arm; an automatic sample injector is arranged on the outer side of the automatic two-dimensional arm; a manual sample injector is arranged on the outer side of the manual two-dimensional arm; a control board card is arranged on the machine frame; a touch display screen and an output unit are arranged on the machine shell. The high-speed C reactive protein analyzer has the advantages that due to the automatic reagent adding structure of the independent measuring units, the automatic two-dimensional arm and the reagent adding station, a plurality of samples can be detected at high speed at the same time, and detection speed is greatly increased; an automatic sample injection mode and a manual sample injection mode can be freely switched; due to the structure of the independent measuring units, complete machine maintenance is facilitated.

The invention relates to a line-passing screw drilling tool comprising a driving assembly, a universal shaft assembly, a motor assembly and a falling-proof assembly which are arranged in sequence. The line-passing screw drilling tool has the advantages that (1), a complete line-passing connection of a screw from the upper end to the lower end is achieved; (2), the lower end of the screw can be connected with an independent measuring short section or module / well logging short section or module such as a near-bit geosteering measuring short section or rotating guiding system; (3), the power supply and signal bidirectional communication of instruments of the upper end and the lower end of the screw are achieved; (4), the centralized and uniform power supply through the upper end of the screw can be selected, so that the system structure is simplified; and (5), the measuring short section between a drill and the screw is shortened, and the well drilling risk is reduced.

A system for measuring and controlling solenoid armature position. The system determines inductive voltage in the drive winding of the solenoid, integrates that voltage to obtain flux, and uses the current / flux ratio to measure armature position. To overcome integration drift, the current / flux position measure is compared to an independent position measure, this comparison leading to a drift correction. In an embodiment maintaining a servo-controlled position, flux drift causes position drift and current drift, the latter providing an independent measure of position drift and flux drift, permitting drift correction. In a second embodiment, a high frequency component of the drive voltage (possibly from pulse width modulation) and a high frequency current measurement provide the independent measure of position.

The embodiment of the invention discloses an electrical impedance tomography measuring method, which is characterized in that: in an annular array of N electrodes arranged in the body surface of a human body, every two adjacent electrodes form a pair of exciting electrode pairs to perform excitation once, and the excitation is performed for N times; in one of the excitation, other N-2 electrodes expect the exciting electrode pairs are used as measuring electrodes, two electrodes adjacent to the excited electrodes in the current excitation are used as reference electrodes and form measuring electrode pairs with other measuring electrodes, and the measuring electrode pairs and a measuring electrode pair is formed by the two reference electrodes, and 2N-7 measuring electrode pairs are formed; and after exciting current is inputted by the exciting electrode pairs, the voltage data of the 2N-7 measuring electrode pairs are measured, and electrical impedance distribution images in the human body are acquired according to N(2N-7) voltage data obtained by exciting and measuring for N times, wherein N is an integral number which is more than or equal to 8. The embodiment of the invention also discloses the other electrical impedance tomography measuring method. By the method, the reliability and effectiveness of measuring integral the data can be improved, independent measuring numbers are enough, redundant measuring is less, and the real time of the measuring is good. Particularly the imaging effect is better under the condition of lower measuring sensitivity and lower signal to noise ratio in an electrical impedance tomography (EIT) system.

The invention relates to a distributed parallel potential acquisition system used for dynamically or statically monitoring residual oil of an oil field, leachate of an refuse dump, and the like by using a potentiometric method, and formed by connecting an upper computer and a main control unit through a USB port and connecting the main control unit, a first acquisition unit, a second acquisition unit, a third acquisition unit and until the N acquisition unit in series sequentially through a data transmission cable. Testing networks of 65535 acquisition units at most can be connected through the data transmission cable. Each acquisition unit has 12 independent measuring channels with high speed and high precision, acquires data by adopting a parallel way and transmits the data in a relay way; the main control unit is designed by adopting a distributed way, the data of the whole testing network can be acquired simultaneously by adopting a digital communication and synchronous technologyamong the acquisition units, and thus the disturbance from a free electric field on the acquired data can be overcome, the induction noise of the whole testing network can be reduced and the whole testing system is simplified. The testing system has the advantages of strong scalability, small size, light weight, low cost and easy construction.

The invention discloses a pulse apparatus which comprises a framework and three identical and independent measuring heads. Each measuring head comprises a force sensor, a pre-loaded pressure adjusting mechanism and a measuring pressure head, a fixed end of the force sensor is fixed onto the framework, and the pre-loaded pressure adjusting mechanism is connected to a measuring end of the force sensor; each pre-loaded pressure adjusting mechanism comprises a support, a motor capable of rotating clockwise and anticlockwise, a lead screw and a nut, the motor is mounted on the support, the lead screw and a motor shaft of the motor rotate synchronously, and one end of the lead screw is supported on the support by a rolling bearing; and the measuring pressure heads are fixed onto the nuts, each nut and the corresponding lead screw are matched with each other in a helical movement manner, and rotation of each lead screw is converted into linear movement of the corresponding nut along the lead screw, so that the measuring pressure heads are driven to move in linear directions. The pulse apparatus has the advantages that acting force which is exerted by an arm of a patient to the measuring pressure heads can be accurately measured by the force sensors, and accordingly the pulse apparatus is good in repeated measurement precision and high system measurement precision.

The invention provides an automatic analyzing device and a sample analyzing method. The automatic analyzing device comprises a filling unit (20), a reaction unit (10), a measuring unit (80) and a transfer unit (50), wherein the filling unit (20) is used for filling a sample or / and a reagent into a reaction vessel; the reaction unit (10) is used for hatching, cleaning and separating a reactant in the reaction vessel; the measuring unit (80) is used for measuring reaction signals in the reaction vessel; and the transfer unit (50) is used for transferring the reaction vessel among different positions. According to the automatic analyzing device, the reaction unit is taken as a center to realize hatching, cleaning and separating of the reactant in the reaction vessel, and the measuring unit independent from the reaction unit is used for measuring the signals in the reaction vessel. The automatic analyzing device dispenses with a single cleaning and separating disk, simplifies the system structure and flow of control, can obviously reduce the size of the reaction unit, and realizes a flexible hatching time; and in addition, the independent measuring unit can realize a darkroom environment more easily and can realize a flexible signal hatching time.

A first test signal from a test signal source is provided to a spectrum analyzer to produce first measurement data. The test signal source is expressed by a first transfer function G(w) and the spectrum analyzer is expressed by second transfer function F(w). A second test signal is provided to the spectrum analyzer to produce second measurement data where the second test signal is derived from the first test signal by shifting the frequency by a known increment. From the first and second measurement data, the components are the same on G(w) but different on F(w). The G(w) components are cancelled by calculation using the first and second measurement data and then the second transfer function F(w) is evaluated independently of G(w).

The invention relates to a general portable large diameter measuring gauge and a method in particular to huge diameter measuring device and method with high accuracy and significantly improved measurement efficiency. The measuring gauge consists of a series of independent measuring units (1) and an inside micrometer (2) with a V-shaped gauge button. Each measuring unit (1) comprises a thing-in-itself (13), a front positioning component (11), a back positioning component (12), a plurality of same fixing mechanisms (14) with permanent magnets (1411), two same auxiliary positioning mechanisms (15) and an auxiliary supporting mechanism (16) comprising an auxiliary supporting component (161) which can be moved and locked for the measuring unit (1) with longer length. The inside micrometer (2) with a V-shaped gauge button is constituted by a common inside micrometer and a lengthening bar (23) linked to the common inside micrometer with a V-shaped measuring button (232) at one end.

The on-line three screw thread steel parameter measuring system features that the measuring system consists of linear CCD array measuring instrument for measuring longitudinal rib height, photoelectronic collimating optical projecting instrument for measuring inner diameter and transverse rib height, and computerized control system. The linear CCD array measuring instrument and the photoelectronic collimating optical projecting instrument are two independent measuring systems to measure screw thread steel in two perpendicular directions through sharing one common measuring head. The measuring signals of two directions are fed to the computerized control system simultaneously, and the computerized control system completes data treatment before outputting measurement results.

The present invention provides a method and an apparatus for using power of a pilot channel to control an output power from a transmitter, such as a base station transmitting spread spectrum signals. In one embodiment, a method for controlling an output power from a transmitter associated with a communication node (e.g., Node B) in a wireless network, such as a digital cellular network is provided. The method comprises extracting an indication of a pilot channel power from a portion of an output signal of the transmitter and controlling a control loop having one or more control devices in the transmitter based on the indication of a pilot channel power such that the pilot channel power stays substantially constant over a period of time. In this manner, using a closed power loop controller, a transmitter may overcome the problem of measuring the power of a non-constant spread spectrum signal and a traffic independent measure may control a cell size. Compared to a gain control loop, a relatively more precise control of the cell size may be provided using a significantly less measurement components.

The invention relates to a measuring head device for measuring a crankshaft. A traditional measuring device is low in measuring accuracy and efficiency and single in measure item, and measuring head portions of comprehensive crankshaft measuring devices produced by American Adcole Corporation, Germany Hommel Corporation and the like are completed by following a mechanism. The measuring head device for measuring the crankshaft comprises an x-direction measuring module and a z-direction measuring module. The x-direction measuring module comprises a flexible guiding mechanism and an x-direction displacement sensor, wherein the flexible guiding mechanism comprises a moving plate, a left guiding plate, a right guiding plate and a fixing support which are sequentially and vertically connected through reeds. One end of the moving plate is connected with an x-direction measuring plate parallel to the moving plate, the other end of the moving plate corresponds to the x-direction displacement sensor, and the x-direction displacement sensor is fixed to an x-direction sensor support connected with the flexible guiding mechanism. The independent measuring head device is installed on a measuring platform having a coordinate measurement function and can achieve precise measurement on the size and form and location tolerance of the crankshaft.

The invention discloses a 20cm high plastic net sand-protecting barrier device which comprises a plurality of sand fixing units, wherein each sand fixing unit comprises a 20cm high plastic net and a fixing drill rod; each plastic net is arranged as a V-shaped sand-protecting barrier and a straight sand-protecting barrier through the fixing drill rod; each straight sand-protecting barrier is arranged at an opening of the corresponding V-shaped sand-protecting barrier. The invention also discloses an arranging method for the device. The arranging method for the 20cm high plastic net sand-protecting barrier device and the construction structure are optimized by the invention; a large amount of material cost and labor cost for preventing and treating sand damage in unit area are saved; the construction environment of personnel is improved; the main work is changed into indoor processing from on-site construction; the treating cost for the sand damage in unit area is greatly reduced; the adaptation for the complex terrain of construction site is increased; the method is widely applied to the anticipatory measure for forestation in sand damage area or the independent measure for preventing and treating the sand damage.

The invention relates to an automotive follow-up mileage measuring device. The automotive follow-up mileage measuring device comprises a measuring wheel, a wheel arm, a wheel arm bracket and a measuring wheel mounting seat, wherein the measuring wheel can be in contact with a ground surface and is rotationally mounted at a connecting shaft of the wheel arm, an encoder is fixed on the connecting shaft, a shaft hole is formed in the other end of the wheel arm and rotationally sleeves a wheel arm rotating shaft of the wheel arm bracket, the upper end of the wheel arm bracket is fixed at the lower end of a wheel arm steering shaft, and the wheel arm steering shaft runs through a wheel arm steering shaft seat and is locked in the wheel arm steering shaft seat. According to the automotive follow-up mileage measuring device, a measuring wheel follow-up steering device is additionally mounted based on an independent measuring wheel device, so that the measuring wheel can follow a road detection vehicle to freely steer and can achieve an automatic lifting function and a maximal corner elasticity limiting function when the road detection vehicle turns suddenly or turns rapidly; meanwhile, by virtue of the maximal corner elasticity limiting function of the measuring wheel, the impact caused by the follow-up measuring wheel to a mounting structure under a large centrifugal force when the road detection vehicle turns rapidly is reduced.

The invention relates to a large measuring apparatus control system, in particular to a method for using a computer for automatic control when needing an apparatus group consisting of a plurality of independent measuring apparatus systems to coordinate in operation. The method for coordinating a plurality of independent measuring apparatuses in automatic operation comprises the following steps of: connecting the control computers of the whole apparatus group through network equipment, selecting the control computer of an apparatus as the host machine of the apparatus group, controlling the operation time sequences of the apparatus group through the host machine, sending a message to the control computer of each apparatus, and after the control computer of each apparatus receives the corresponding message, locally imitating the action of a mouse keyboard and directly operating a control interface of the apparatus. The method is suitable for coordinating the measuring apparatus group with a Windows operating system in operation under a particular condition that each measuring process is predictable.

Measuring apparatus (50) of geometrical parameters of cylinders, rolls and similar elements (11), used for the rolling of flat products operating on a machine for the grinding of said cylinders with an autonomous movement, i.e. with a movement independent of the translation movement of the grinding wheel or other parts, characterized in that it comprises at least four sensors (54, 55), situated on a surface orthogonal to the cylinder (11) or roll and in that at least two of said sensors are situated in opposite positions.

The invention discloses a programmable rotating speed signal device based on a software and hardware dual TMR type. The programmable rotating speed signal device comprises a first control module, a second control module and a third control module. The first control module and the second control module are in two-way data connection, the second control module and the third control module are in two-way data connection, and the first control module and the third control module are in two-way data connection. According to the programmable rotating speed signal device based on the software and hardware dual TMR type, the output mode that the three control modules simultaneously work is adopted, three paths of input signals are analyzed and output inside each control module through software, output signals of the three independent control modules are subjected to hardware TMR vote output, and then the dual TMR purpose is achieved. An independent measuring circuit and an independent power supply circuit are arranged inside each control module, the reliability and stability of the device are greatly improved, and safe and stable operation of a hydroelectric generating set is effectively improved.

The invention provides an independent measuring structure for air leakage of a compressor end and a turbine end of a turbocharger. The independent measuring structure comprises an oil sealing cover, acompressor dorsal disk, a bearing body and a draft tube, wherein the bearing body, the oil sealing cover and the compressor dorsal disk are sequentially mounted on a central shaft of the turbochargerfrom right to left, the turbine end is arranged at the right end of the bearing body, the compressor dorsal disk is connected to the compressor end, a sealing structure is arranged at the outer edgebetween the compressor dorsal disk and the oil sealing cover, a sealing passage is arranged in the position between the compressor dorsal disk and the oil sealing cover, a flow guiding hole is formedin the outer edge of the oil sealing cover, one end of the draft tube is connected to the flow guiding hole, the other end of the draft tube is connected to an air flow meter, an oil return flange onthe bearing body is connected to a turbocharger air leakage measuring device. The independent measuring structure has the beneficial effects that the oil sealing cover, a shaft sealing sleeve and a seal ring are additionally arranged on a typical supercharger structure, and gas leaked by a compressor is separated from gas leaked by a turbine, so that independent measurement of the air leakage at the compressor end and the air leakage at the turbine end is realized.

The invention relates to a line-passing screw drilling tool comprising a driving assembly, a universal shaft assembly, a motor assembly and a falling-proof assembly which are arranged in sequence. The line-passing screw drilling tool has the advantages that (1), a complete line-passing connection of a screw from the upper end to the lower end is achieved; (2), the lower end of the screw can be connected with an independent measuring short section or module / well logging short section or module such as a near-bit geosteering measuring short section or rotating guiding system; (3), the power supply and signal bidirectional communication of instruments of the upper end and the lower end of the screw are achieved; (4), the centralized and uniform power supply through the upper end of the screw can be selected, so that the system structure is simplified; and (5), the measuring short section between a drill and the screw is shortened, and the well drilling risk is reduced.

The invention relates to a direct image reconstruction method based on the capacitance tomography of a round sensor. The method comprises the following operation steps: 1. N electrodes of an ECT sensoThe invention relates to a direct image reconstruction method based on the capacitance tomography of a round sensor. The method comprises the following operation steps: 1. N electrodes of an ECT sensor, which are arranged on the same cross section, are counterclockwise marked as electrodes i (i is larger than or equal to 1 and is smaller than or equal to N) and a traditional 1-by-1 excitation measr, which are arranged on the same cross section, are counterclockwise marked as electrodes i (i is larger than or equal to 1 and is smaller than or equal to N) and a traditional 1-by-1 excitation measuring mode is adopted, i.e. a scanning process comprises N-1 actions; 2. measured capacitance values are firstly pre-treated by linear transform to obtain N*(N-1) / 2 independent measured charge changeuring mode is adopted, i.e. a scanning process comprises N-1 actions; 2. measured capacitance values are firstly pre-treated by linear transform to obtain N*(N-1) / 2 independent measured charge changevalues; 3. the scattering transformation t(s) of discrete electrodes is calculated; and 4. the specific inductive capacity variation of any point is rebuilt. The invention aims at a round measuring revalues; 3. the scattering transformation t(s) of discrete electrodes is calculated; and 4. the specific inductive capacity variation of any point is rebuilt. The invention aims at a round measuring region, overcomes the defects that a traditional algorithm needs to calculate a sensitivity matrix and can not independently calculate the rebuilding result of a subregion, directly rebuilds images accogion, overcomes the defects that a traditional algorithm needs to calculate a sensitivity matrix and can not independently calculate the rebuilding result of a subregion, directly rebuilds images according to capacitance measuring values and can directly rebuild images in the subregion. The method has high real-time performance, can be popularized to ECT and has important practical values and applrding to capacitance measuring values and can directly rebuild images in the subregion. The method has high real-time performance, can be popularized to ECT and has important practical values and application prospects.ication prospects.

The invention discloses a split-type measuring glass on a packaging machine. The split-type measuring glass on the packaging machine comprises a base (1), a chassis (2) and a measuring glass body (3), and is characterized in that the chassis (2) is arranged on the base (1), and the measuring glass body (3) is arranged on the chassis (2). An original integral measuring glass formed by four measuring glasses is divided into four independent measuring glasses, the replacing time is increased to three minutes, and the split-type measuring glass on the packaging machine avoids waste of measuring glass materials, and has the advantages of being convenient to use, high in using efficiency and the like.

An integrated circuit standard sample characteristic parameter measurement device, comprising: a pin division unit, used to divide the pins of the standard sample into control pins and measurement pins; a signal division unit, used to divide the pin signals into measurement signals and control signals; the measurement circuit establishment unit is used to control the external instrument to generate measurement signals, and distribute the measurement signals to the characteristic parameter measurement pins of the standard sample through the characteristic parameter measurement board to form an independent measurement circuit of the standard sample; the working circuit establishment unit, It is used to generate a control signal through the integrated circuit test system, and distribute the control signal to the control pin of the standard sample through the characteristic parameter measurement board to form a working loop of the standard sample; the measurement result acquisition unit is used to make the standard sample in the control signal Working together with the measurement signal, the external instrument is controlled to measure the measurement signal fed back by the standard sample to obtain the measurement result of the characteristic parameter.

The present invention provides a method and an apparatus for using power of a pilot channel to control an output power from a transmitter, such as a base station transmitting spread spectrum signals. In one embodiment, a method for controlling an output power from a transmitter associated with a communication node (e.g., Node B) in a wireless network, such as a digital cellular network is provided. The method comprises extracting an indication of a pilot channel power from a portion of an output signal of the transmitter and controlling a control loop having one or more control devices in the transmitter based on the indication of a pilot channel power such that the pilot channel power stays substantially constant over a period of time. In this manner, using a closed power loop controller, a transmitter may overcome the problem of measuring the power of a non-constant spread spectrum signal and a traffic independent measure may control a cell size. Compared to a gain control loop, a relatively more precise control of the cell size may be provided using a significantly less measurement components.