137results about How to "High temperature accuracy" patented technology

An approach to noninvasively, remotely and accurately detect core body temperature in a warm-blooded subject, human or animal, via thermal imaging. Preferred features such as the use of in-frame temperature references, specific anatomical target regions and a physiological heat transfer model help the present invention to overcome pitfalls inherent with existing thermal imaging techniques applied to physiological screening applications. This invention provides the ability to noninvasively, remotely and rapidly screen for diseases or conditions that are characterized by changes in core body temperature. One human application of this invention is the remote screening for severe acute respiratory syndrome (SARS), since fever is a common, early symptom. Other diseases and conditions that affect the core body temperature of humans or animals may also be noninvasively and remotely detected with this invention.

A BOTDA system that combined optical pulse coding techniques and coherent detection includes a narrow linewidth laser, two polarization-maintaining couplers, microwave generator, two electro-optic modulators (EOMs), fiber under test, an optical circulator, a 3 dB coupler, a polarization scrambler, a pulse generator, a balance photodetector, an electrical spectrum analyzer, digital signal processing unit and a frequency shifter. The optical pulse coding techniques and coherent detection are simultaneously used in the invented system, which can be enhance the signal-to-noise ration (SNR), the measuring accuracy and the sensing distance of BOTDA. Moreover, the proposed system has the capacity of break interrogation.

A control method for a hydrogen filling system is provided. A hydrogen filling system (S) includes a vehicle (V) that sends unique information (V, MC) of the hydrogen tank and detected values (T, P) of sensors, and a station (9) that determines a filling mode based on this information (V, MC, P, T), and fills hydrogen to the tank in this determined mode. A station ECU (95) calculates predicted values (T′, P′) of the temperature and pressure inside of the hydrogen tank during filling of hydrogen based on the unique information (V, MC), continuously confirms whether the detected values (T, P) of the sensors and the predicted values (T′, P′) match while filling fuel, and in the case of an inconsistency between the detected values and predicted values being confirmed, interrupts filling of fuel in the filling mode determined based on the unique information.

Provided is a temperature sensor capable of stably keeping the accuracy of detected temperatures. The temperature sensor of the present invention comprises a sensor element (1) comprising a temperature sensing element (2) whose electrical resistance changes according to temperature; a pair of lead wires (4) electrically connected to the temperature sensing element (2); and a covering material (5) which seals the temperature sensing element (2) and portions of the lead wires (4) in a prescribed range; wherein the lead wires (4) are led out of the sealed ends (6) of the covering material (5). The temperature sensor further comprises a metallic protective tube (20) which houses the sensor element (1) except part of the lead wires (4); and a shield comprising a ceramic sealed end closing element (7) which encloses the sealed ends (6), and a lead wire protective tube (8). The shield is loosely fitted inside the metallic protective tube (20).

The present invention provides a control device for cooling between frames, by means of controlling a cooling device for cooling frames of a finishing mill through filling cooling water, it is capable of controlling with a higher precision the steel plate temperature of an output side of the finishing mill and further reducing a fluctuation frequentness of the cooling water amount. The cooling device (1) includes a presetting control mechanism (11), for controlling the cooling water amount of cooling devices (7a-7d) of the finishing mill (2) in a mode that the FDT (finishing delivery side temperature) of the steel plate (3) is consistent with an anticipant target temperature, before the steel plate is cooled by the cooling water, the FDT is estimated by a steel plate temperature estimation model (18), then the cooling water amount of the cooling device is calculated based on the FDT and a presetting control output is generated; a dynamic control mechanism (12), obtaining a state quantity of the rolling steel plate, calculating a altering amount of the cooling water amount based on the state quantity and generating a dynamic control output; and a frame cooling instruction generation unit (13), generating and outputting frame cooling instructions based on the presetting control output and the dynamic control output.

A numerical procedure is disclosed to improve the prediction of heat fronts when simulating hot fluid injection in viscous hydrocarbon reservoirs. The mathematical model is composed of the conventional governing equations that describe multiphase fluid flow and energy balance. The reservoir geometry can be partitioned into a regular Cartesian grid or an irregular corner-point geometry grid. The numerical procedure uses the finite different (FD) method to solve the flow equations and the discontinuous Galerkin (DG) method to solve the energy balance equation. The proposed FD-DG method is an alternative to the traditional solution procedure that uses the FD method to solve both the flow and the energy equations. The traditional method has the deficiency that it may require excessive number of grid cells to achieve acceptable resolution of the heat fronts. The proposed FD-DG method significantly reduces numerical dispersion near discontinuities in the solution of the energy equation and therefore provides a better capture of the heat fronts. To obtain a desired accuracy in the energy equation solution, the FD-DG method can be orders of magnitude faster than the traditional method. The superiority of the FD-DG method is that it converges on coarser grids while the traditional method requires much finer grids.

The invention relates to infrared radiation measurement and calibration technology field and especially relates to a high-precision surface source blackbody radiation source device capable of being applied under a vacuum low temperature condition. The device mainly comprises a blackbody radiation source main body module, a vacuum cabin, a control cable in the cabin, a through-wall air plug, a control cable outside the cabin, a refrigeration copper braid and a controller module. The blackbody radiation source main body module is placed in the vacuum cabin. The blackbody radiation source main body module is connected to an inner wall of the vacuum cabin through the refrigeration copper braid. The blackbody radiation source main body module is connected to the controller module successively through the control cable in the cabin, the through-wall air plug and the control cable outside the cabin. The device has advantages that a problem that effective emissivity, temperature uniformity and a wide temperature range can not be simultaneously satisfied in the prior art is effectively solved; and an application basis is provided for calibrating and testing infrared detection equipment and establishing a low temperature target performance test system under a vacuum environment.

The invention discloses a temperature control method in the hot-rolled strip tailing-out process. The method comprises the following steps of: determining that the strip tail enters finish rolling and a flying shear enters a tail-cut state according to a signal of the strip tail; ensuring that the strip tailing-out temperature is constant by dynamically controlling a highest-speed deceleration point; according to the strip tailing-out temperature and the coiling temperature, setting the maximum cooling capacity when the strip steel passes through a laminar flow cooling area at the highest speed and calculating the opening position of a first cooling valve; and according to the actual strip tailing-out temperature and the difference between the finishing temperature and the coiling temperature, correcting the number of opened cooling valves so as to meet the coiling temperature of the strip tail. The highest-speed deceleration tailing-out is dynamically controlled, so that the positionof the tailing-out deceleration point is well positioned, the finishing temperature is kept constant in the strip tailing-out process further, and the coil temperature when the strip steel is coiled is in a reasonable margin tolerance finally.

An isostatic press according to the present invention includes a heat insulator that forms a working zone which contains a workpiece, a high pressure vessel that covers the heat insulator, a heating unit that heats the high pressure vessel, and a pressure medium supplying device that can supply an interior of the high pressure vessel with the pressure medium, where a pressure medium introducing space which communicates with said working zone, and can introduce the pressure medium is provided between the heat insulator and the high pressure vessel. The pressure medium introducing space communicates with the working zone via a communication hole formed on a top portion of the heat insulator, and the pressure medium supplying device communicates with the pressure medium introducing space via a pressure medium introducing opening formed on a bottom portion of the high pressure vessel. This configuration efficiently heats both the pressure medium and the high pressure vessel thereby enabling processing of the workpiece with a stable temperature accuracy.

The invention is applicable to the field of temperature correction, and provides a calibration method for surface source blackbody temperature accuracy. The method comprises the following steps that A, M different calibration temperature points are selected in the set temperature range of a surface source blackbody; B, a metering standard platinum resistance temperature indicator is utilized for carrying out temperature measurement on the surface source blackbody radiation source at each calibration temperature point through calibration holes, the real temperature value Ti is obtained, and in addition, the radiation temperature ti of the corresponding surface source blackbody per se is recorded; C, the radiation temperature of the surface source blackbody per se of each calibration temperature point is subjected to linear fitting with the real temperature value measured by the metering standard platinum resistance temperature indicator, and correction factors are calculated; and D, correction factors are utilized for correcting the temperature of the surface source blackbody. The calibration method aims at further correcting the nonlinear error of a platinum resistance temperature measuring system, the measurement precision of the whole system is improved in the full temperature range, the calibration precision of the surface source blackbody radiation temperature accuracy is improved, and the high-precision testing requirement is met.

Measuring apparatus-calibration device for calibrating a measuring apparatus-temperature sensor of a, in particular optical, measuring apparatus, wherein the measuring apparatus-calibration device comprises a, preferably measuring apparatus-external, calibration-temperature sensor, which is traceably calibratable itself, for determining a calibration temperature in the region of a measuring surface of the measuring apparatus and a determination unit which is adapted for determining an information which is indicative for a discrepancy between a measuring apparatus-temperature which is captured by the measuring apparatus-temperature sensor in the region of the measuring surface and the calibration temperature, on whose basis the measuring apparatus-temperature sensor is calibratable.

A method for measuring solution and precipitation temperatures of a precipitated phase in steel by adopting a dilation method and belongs to the technical field of detection of metal materials. The technical scheme is that the temperature variation along with the dilation quantity in the temperature increment and reduction processes are tested through a dilatometer by utilizing the volume change in the precipitation and solution processes, and then a primary differential curve is calculated to determine the solution and precipitation temperatures of the precipitated phase. The invention has the advantages that the solution and precipitation temperatures of the precipitated phase can be accurately measured, and further, references are provided for controlling the material processing technology. The measurement method is simple and convenient and the tested temperatures are high in precision.

The mixture solvent of dichlorimethane type, the TAC and the plasticizer are supplied into a dissolution tank, and stirred therein with a stirrer to obtain a dispersing solution. The dispersing solution is fed into a storing tank and further stirred therein. Then the dispersing solution is fed by a pump to a heat exchanger for the heating, and thereafter the stirring is made with a static mixer. The temperatures of the dope is measured at many measuring points. On the basis of the temperature distribution, the heat transmission conditions of the heat exchanger are adjusted. Then the dope is fed to a heat exchanger for cooling, to cool to at most the normal boiling point of the dope. Then the mixing is made with a static mixer. Thus the obtained dope is uniform.

An LED-driven optical cavity PCR system and method is disclosed for fast, accurate and reliable PCR based diagnostics. An optical cavity comprising two thin light absorbing metal (AU) films is used for uniform light absorption and subsequent photo thermal light-to-heat conversion is employed for PCR thermal cycling.

The invention belongs to the field of temperature demodulation in a distributed optical fiber sensing system, and discloses a high-precision optical fiber Raman temperature detection method based on anti-Stokes light self-demodulation. The method comprises the following steps that S1, carrying out device construction; S2, a calibration and measurement stage: acquiring the light intensity of backward Raman scattering light of the anti-Stokes light of each point in a reference optical fiber ring and any position of a sensing optical fiber; S3, a calibration measurement stage: respectively collecting light intensity of backward Raman scattering light of the anti-Stokes light of a calibration optical fiber ring at different positions, and carrying out calculation and linear fitting to obtain all function values of temperature sensitive factors in the sensing optical fiber; S4, a measurement stage: collecting the light intensity of the backward Raman scattering light of the anti-Stokes light of each point in the reference optical fiber ring and each position in the sensing optical fiber; and S5, calculating to obtain all temperature information along the sensing optical fiber. The method effectively solves the problem of low temperature measurement precision of the distributed optical fiber Raman sensing system, and can be widely applied to the field of distributed optical fiber sensing.

Sensing accuracy of a temperature sensor is enhanced so as to accurately conduct regeneration control of a particulate filter.

Disclosed is an exhaust emission control device wherein a pair of dispersion plates 10 and 11 with a number of communicating holes 10a and 11a are arranged in a filter casing 7 incorporated in an exhaust pipe such that the plates are opposed to each other in a direction of flows of exhaust gas 3, catalytic regenerative particulate filter 6 being received in a reception chamber 12 defined by and between the dispersion plates 10 and 11. A temperature sensor 14 is arranged in the filter casing 7 so as to detect exhaust temperature in the reception chamber 12, a sensing element 15 of the temperature sensor 14 being adapted to be in one of flows of the exhaust gas 3.

A cooling apparatus configured such that a cooling body provided with heat-dissipating plates is pressed against a device to which a socket of a burn-in board is attached, and air is provided by a blower such that the air passes between the heat-dissipating plates, and compressed air provided from a compressed air supply system is discharged by a nozzle so that it directly hits a portion of the cooling upper surface of the cooling body. By means of the cooling effects from these two types of air, a device generating a large amount of heat can be cooled with good temperature accuracy.

The invention discloses a method for controlling the temperature of watermark points of strip steel. The method includes the following steps: (1) parameters of fixing beams of a heating furnace, the size of a slab, the size of an intermediate billet and the size of the strip steel in a finishing milling rack are determined; (2) an actual-measurement temperature sequence of the head of the intermediate billet is processed, the lowest temperature point and the position of the lowest temperature point are determined, and the standard deviation of the temperature sequence is calculated; (3) the starting position of a first watermark region of the intermediate billet is calculated, according to the volume invariability theorem, the starting position of a corresponding first watermark region on the strip steel in the rack is calculated, the widths of the watermark regions on the strip steel are calculated, the cycle interval of the watermark regions is calculated, if the standard deviation of actual measurement temperature values is small, a setting parameter is set to be -1, and watermark control is not carried out; (4) the watermark temperature control parameters are sent to a basic automation system for setting control. The method is simple and practicable, control over the temperature of the strip steel can be effectively improved, and the temperature accuracy can be improved.

The invention discloses a concrete unilateral freeze thawing tester, comprising a test block tank, a radiating system, a control cabinet and insulating layers, wherein the insulating layers are arranged on peripheral wall of the test block tank and below the test block tank, foaming cotton is filled in the insulating layer, a refrigeration slot is horizontally arranged in the middle of the insulating layer below the test block tank; the bottom of one end of the refrigeration slot is connected with an input pipe, and the side of the other end is further connected with an output pipe, the input pipe is connected with the output pipe through a water pump; the bottom of the radiating system is provided with an electromagnetic valve group, the electromagnetic valve group comprises three parallel electromagnetic valves, the first end socket of the electromagnetic valve group is connected with the test block tank, and the second end socket is connected with the refrigeration slot; the test block tank can be pre-cooled through the refrigeration slot so as to reduce the temperature of the test block tank, and the cooling water in the refrigeration slot can be supplemented to the test block tank through the electromagnetic valve so as to balance the deviation between the target temperature and the actual temperature in the test block tank, and the temperature precision in the test block tank can be greatly improved.

The invention discloses a method for measuring the dissolving and precipitating temperatures of a precipitated phase in a steel and iron material, belonging to the technical field of metal material detection. According to the adopted technical scheme, the precipitating temperature and the dissolving temperature are measured by using the variation of accompanying absorbed or discharged heat in theprecipitating and dissolving processes. The method has the advantage: the dissolving and precipitating temperatures of the precipitated phase in the heating or cooling process can be accurately measured, so that reference data is provided for the control over the material machining process. The measuring method is easy and convenient, and has high temperature testing accuracy.

The invention belongs to the field of temperature demodulation in a distributed optical fiber sensing system, and discloses a double-path high-precision temperature demodulation method based on a distributed optical fiber Raman sensing system. The method comprises the following steps: S1, carrying out device connection; S2, a calibration and measurement stage: respectively collecting light intensity ratios of anti-Stokes light and Stokes light of each point in a reference optical fiber ring and any position L of a sensing optical fiber; S3, a calibration measurement stage: respectively collecting light intensity ratios of backward anti-Stokes light and Stokes light of the sensing optical fiber when a calibration optical fiber ring is located at different positions, and carrying out calculation and linear fitting to obtain all function values of a temperature sensitive factor of the sensing optical fiber along with the distance; S4, a measurement stage: collecting the light intensity ratio of the anti-Stokes light and the Stokes light of each point in the reference optical fiber ring and each position in the sensing optical fiber; and S6, calculating to obtain all temperature information along the sensing optical fiber. According to the invention, the problem of low temperature measurement precision in the prior art is effectively solved, and the method can be widely applied tothe distributed optical fiber sensing system.

The invention discloses a surface source blackbody radiation source based on gas-liquid two-phase reflux temperature control. The surface source blackbody radiation source comprises a large surface source blackbody, a supporting bottom plate, a gas-liquid two-phase reflux device and a supporting frame; the large surface source blackbody, the supporting bottom plate and the gas-liquid two-phase reflux device are all supported by the supporting frame, the large surface source blackbody is supported by the supporting bottom plate, and the gas-liquid two-phase reflux device is located under the supporting bottom plate. The provided surface source blackbody radiation source based on gas-liquid two-phase reflux temperature control is characterized by high reflectivity and large surface source, gas-liquid two-phase reflux temperature control enables that the large surface source blackbody can realize accurate temperature control within certain temperature range without being limited by the field environment, the stability and uniformity of the temperature of the large surface source blackbody are ensured, and the requirements for high reflectivity and high uniformity of high-spectral andinfrared load high-precision external field radiation calibration are met.

The invention relates to a YSZ: Re fluorescence lifetime measurement-based temperature measurement system, a test method thereof and the application thereof. The temperature measurement system comprises a signal transmitter, a UV-LED ultraviolet light source electrically connected with the signal transmitter, a temperature measurement probe and a temperature signal processing unit matched with the temperature measurement probe. The temperature signal processing unit comprises an optical filter, a photomultiplier tube detector, a resistance box and an oscilloscope, wherein the resistance box and the oscilloscope are sequentially and electrically connected with the photomultiplier tube detector. The surface of the temperature measurement probe is sprayed with a YSZ: Re fluorescent layer and is respectively connected with the UV-LED ultraviolet light source and the optical filter through optical fibers. The temperature measurement system is used for measuring the temperature of an aircraft engine or a ground gas turbine temperature in the working state. Compared with the prior art, the measurement temperature can be high up to 500-1200 DEG C and the temperature accuracy is high. Through changing the shape of the temperature measurement probe, the temperature measurement probe can be applied to the temperature measurement under different environments. Meanwhile, the temperature field is not affected. The advantages of high temperature accuracy and wide application range are realized.

The invention relates to a micro heating disk and a manufacturing method thereof as well as a micro heating disk system. The micro heating disk comprises a substrate, an insulating supporting layer, aresistance heating layer and a temperature sensing unit, wherein the annular temperature sensing unit is arranged at the periphery of the substrate. According to the micro heating disk disclosed by the invention, by the arrangement of the annular temperature sensing unit arranged at the periphery, a contact area of the temperature sensing unit and the environment is enlarged, and the accuracy ofsensed ambient temperature is high; the temperature sensing unit works at room temperature, so that the long-term stability is high; meanwhile, an annular metal layer can effectively shield the influence of external electromagnetic interference on the work of a micro heating disk chip; furthermore, the temperature sensing unit can precisely sense a temperature change of a surrounding environment in real time and automatically transmit the acquired temperature to control heating power of a heating region to stabilize the working temperature of the chip; the micro heating disk is convenient andquick.