32results about How to "Realize value traceability" patented technology

The invention discloses an automatic electric quantity calibrating system and an automatic electric quantity calibrating method and belongs to the technical field of electromagnetism measuring. An automatic electric quantity calibrating device mainly comprises a computer, an AD/DA (analog to digital/digital to analog) module, a timer/counter module, a signal distribution module, a signal conditioning module, a signal transfer module, a system traceability measuring interface module, an equipment measuring interface module and a system power source module, and the automatic electric quantity calibrating system mainly comprises a self-checking system, a demarcating subsystem, an equipment measuring subsystem, a traceability subsystem and a data, certificate or report processing subsystem. The automatic electric quantity calibrating device has the advantages of small size, light weight, simplicity in operation, functional powerfulness, high accuracy and the like, the calibrating system applies signal-oriented designing technologies such as signal distribution, conditioning, converting and measurement adaption, measuring signal excitation and testing are realized, and requirements of automatized calibration of automatic testing systems under laboratory and carry-out conditions can be met.

A field environment based integrated calibrating and analytic device of digital electric energy meter includes a load collection device, a load reduction device, an analog standard electric energy meter which can convert analog signals in to IEC61850 digital signals and a calibrated digital electric energy meter. The analog standard electric energy meter includes an A/D sampling module sample, an IEC61850 conversion module and an electric energy error calculation module. The device achieves to verify the digital electric energy meter through the actual operating load on the site, and also can verify the digital electric energy meters from different factories in the same field load environment and realize the quantity traceability of the digital electric energy meters. The device is applicable to the digital electric energy meter verification and analysis in the digital environment.

The invention relates to a nano step sample scanning measurement type scanning electron microscope. A two-dimensional laser interferometer comprises two interferometers, the interferometers are respectively positioned in the X direction and the Y direction of a measured sample, a light source for the interferometers is introduced from a laser through an optical fiber, penetrates through a vacuum window plate of a glass window and is split into two beams in the electron microscope, and the two beams of light are respectively incident to the two interferometers; when an ultrasonic motor rough adjustment displacement table performs scanning motion, a beam of emergent interference light is incident to a photoelectric detector through a vacuum window as an X-axis displacement data signal of the mobile station; the other beam of interference light is reflected by a flat reflector and then is incident to the interferometer close to a cabin door, and the emergent interference light is received by the other detector as a Y-axis displacement data signal of the mobile station; the X-axis and Y-axis displacement data are matched with the electron microscope to acquire secondary electronic signals exited by electron beams on the surface of the sample, thus obtaining measured data traced by the laser interferometer. The electron microscope can directly trace the measurement value to national standard meter.

The invention discloses an on-wafer capacitor standard component for calibration and a preparation method thereof, belonging to the technical field of metering device for testing. The standard component comprises an insulating substrate. A plurality of standard capacitors with different capacitance values and a standard open circuit device are arranged on the upper surface of the insulating substrate. The on-wafer capacitor standard component can realize integral metering calibration of on-wafer capacitor parameters of a MEMS wafer measuring system and value tracing, thereby ensuring accurate and consistent wafer level measurement results during MEMS manufacturing. The on-wafer capacitor standard component can provide a traceable capacitance value between 1 pF and 100 pF at a testing frequency between 1 kHz and 100 kHz. Design can be done in the above measurement value range according to needs.

The invention discloses a method for calibrating the absolute delay time. The method comprises the following steps of generating a standard sine wave table by using a data processing platform; using asignal processing module to process the standard sine wave table; obtaining the standard voltage current signals and sending the standard current signals to equipment to be tested; when the preset time delay threshold value is reached, using the data processing platform to process the standard sine wave table; obtaining a sampling value SV message; sending the sampling value SV message to the equipment to be tested; performing analog quantity collection by the equipment to be tested while receiving the sampling value SV; obtaining a first sapling value of the quantity threshold value of a preset collecting point; respectively performing fast Fourier transform on a second sampling value corresponding to the first sampling value and the sampling value SV message; obtaining the phase time difference value of the first sampling value and the second sampling vale, i.e., the absolute delay time; determining the absolute delay time of the equipment to be tested according to the absolute delay time and the preset time delay threshold value.

The invention provides an efficacy metering detection platform for a high voltage motor. The efficacy metering detection platform for the high voltage motor comprises a digital frequency conversion power source, a wideband power measurement system, a motor operation system and a magnitude sourcing system, wherein the digital frequency conversion power source is used for outputting 0-660V AC voltages to the high voltage motor, the wideband power measurement system is used for measuring an input power of the high voltage motor, and the motor operation system is used for monitoring operation states of the digital frequency conversion power source, the wideband power measurement system and the high voltage motor. Compared with the prior art, the efficacy metering detection platform for the high voltage motor can carry out efficacy metering detection on the high voltage motor with a rated voltage lower than 10kV and a rated capacity lower than 2000kW, guarantees that technical parameters under various experiment conditions can reach ideal effects, and realizes magnitude sourcing of the wideband power measurement system under the rated condition.

The invention provides an ultrasonic transcranial Doppler blood flow analysis calibration system, comprising a blood flow simulation device and a probe installation device, wherein the blood flow simulation device comprises a water tank box, a DC power source, a microcontroller, a stepping driver and a stepping motor are fixed to a first side face of a supporting side plate of the water tank box,an input end and an output end of the stepping driver are electrically connected with the microcontroller and the stepping motor, a thread driving disk is arranged on a second side face of the supporting side plate, the center of the thread driving disk is fixedly connected with a motor shaft, an upper supporting seat fixed with the second side face is arranged below the thread driving disk, a lower supporting seat is arranged on the surface of a bottom plate of the water tank box, a thread is hanged in a thread guide groove of the thread driving disk, a thread is hanged with a lower guide wheel after bypassing a first upper guide wheel and upper and lower guide columns, the probe installation device comprises a back plate provided with a guide rail seat on the top face, and a six-degree-of-freedom adjusting bracket is fixed on the guide rail seat through a slide block. The system can simulate human blood flow parameters and realize the metering and measurement of blood flow parametersof a TCD instrument.

The invention relates to a wireless transmission multichannel PCR analyzer calibration device and a calibration method thereof. A wireless transmission technology is adopted, workers do not need to bein a high-risk environment for a long time. A plurality of temperature sensors are integrated together by adopting a packaging structure, and the multichannel temperature sensor integrated device ismanufactured. The packaging structure enables the temperature sensor to be immersed in a liquid soaking environment, the liquid soaking environment is used for calibrating the temperature sensor of the calibration device, value tracing and self-calibration during calibration are achieved, errors of the temperature sensor are eliminated and reduced, and it is guaranteed that the calibration resultis accurate and reliable. Therefore, the problems of quantity traceability and self-calibration of the temperature sensor for calibration of the polymerase chain reaction analyzer are solved.

The invention relates to a standard silicon wafer thickness measuring device. The standard silicon wafer thickness measuring device consists of a high-precision inductor micrometer, a granite framework structure and a liftable precious stone spherical surface worktable, wherein the granite framework structure is a double-layer worktable, an upper layer working platform is a silicon wafer carrier table for carrying a measured standard silicon wafer, a lower layer worktable is a base, the base is provided with a five adjustable supporting legs which are connected with the silicon wafer carrier table, the liftable precious stone spherical worktable and an inductor micrometer positioning framework are fixedly arranged on the base, the side surface of the inductor micrometer positioning framework is connected with the high-precision inductor micrometer by virtue of threads, the ribbed liftable precious stone spherical worktable with a ruby measuring head and the diameter of 60mm is arranged in the center of the silicon wafer carrier table below the inductor micrometer, the measuring head is right opposite to the center of the lower liftable precious stone spherical surface worktable, and when the thickness of a silicon wafer is measured, the silicon wafer is arranged between the ruby measuring head and the inductor micrometer. The device is suitable for calibration of the thickness of the standard silicon wafer with the diameter less than or equal to 305mm. The standard silicon wafer thickness measuring device has characteristics of compact structure, simplicity in operation, high accuracy and good reliability.

The invention provides a three-dimensional color space L*a*b* measurement and quantification method for the color of grape wine. The color of the grape wine can be digitally described by using the color space principle CIE 1976 (L*a*b*); the three physical variables L* value, a* value and b* value are combined to mark the color of any grape wine. Compared with an existing grading method, the grading method for the color of the grape wine, which is provided by the invention, has the advantage that by use of values of a 'three-dimensional digital coordinate' of the color of the grape wine, the combination of three-dimensional parameters replaces a conventional expression method of 'visual impression, thinking and judgment and language description' of the color.

The invention discloses a satellite navigation signal simulated source magnitude calibration method, which comprises the following steps: (1) setting and performing a transmission standard, checking whether the transmission standard is stable, and if so, transmitting, otherwise, continuing checking; (2) examining a simulated source to be calibrated, judging whether the simulated source is in a controlled state, and if so, performing a step (3), otherwise, interrupting; (3) measuring the navigation signal simulated source to be calibrated by using a client end through the transmission standard, and after the measurement, returning measured data and the transmission standard; (4) rechecking the returned transmission standard, judging whether the returned transmission standard is stable, and if so, performing a step (5), otherwise, interrupting; (5) judging whether the measuring process is in a controlled state according to an examination standard, and if so, performing a step (6), otherwise, interrupting; and (6) generating a calibration report, and returning the calibration report to the client end to form a closed loop. The invention has the advantages that the satellite navigation signal simulated source magnitude calibration method has a simple principle, is easy and convenient to operate and easy to implement, ensures accurate and reliable measurement and the like.

The invention provides a calibration system of a cyclic voltammetry analyzer and a calibration method of the calibration system and belongs to the field of electroplating, aiming at solving the technical problems in a current industry that standards including special verification regulations, calibration specifications and the like are not provided for metrological performance of the cyclic voltammetry analyzer, the accuracy of metrological traceability cannot be effectively ensured and the metrological characteristics cannot be evaluated. The invention provides the calibration system of the cyclic voltammetry analyzer and the calibration method of the calibration system; parameters of a cyclic voltammetry peeling analyzer can be calibrated and the metrological characteristics can be comprehensively evaluated.

The invention relates to a message dispersion sending amount tracing apparatus and method based on electrooptic homology. The apparatus comprises a parameter setting module used for receiving an external control command to set message sending parameters; a clock calibration module used for calibrating a local clock with an input calibration pulse per second signal as reference, outputting a clock error of a standard pulse per second signal and a local clock signal to correct the time of sending synchronous pulses; a synchronous pulse sending module used for generating a starting synchronous pulse used for sending message according to the input standard pulse per second signal and the local clock signal corrected by the clock calibration module and sending the synchronous pulse according to the parameters set by the parameter setting module; and a network message sending module used for framing in sequence and sending messages according to a synchronization relationship established with the synchronous pulse sent by the synchronous pulse sending module with the rising edge of the synchronous pulses sent by the synchronous pulse sending module as reference.

The invention belongs to a ground hydraulic tester used for detecting liquid oil of a helicopter. The ground hydraulic tester comprises a displacement adjusting module (11), a main oil pumping set (3), an auxiliary oil pumping set (4), a high-pressure filter (12), and an air cooler (7). The hydraulic tester is mainly used for realizing detection of pressure and flow of liquid oil on the helicopter. Under a traditional condition, a hydraulic system of the helicopter cannot realize traceability of value onboard, and in order to realize traceability of value, the ground hydraulic tester is designed. The ground hydraulic tester is mainly used for realizing detection of pressure and flow of the liquid oil on the helicopter and realizing traceability of value.

The invention discloses a calibration device for automatically advancing and retreating an electric energy meter, the calibration device is used for calibrating a to-be-calibrated electric energy meter, the calibration device comprises a cabinet body, a controller, an error processing system, a current and voltage generating device and a standard electric energy meter are arranged in the cabinet body, a control panel is installed on the surface of the cabinet body, the control panel is connected with the controller, and the controller is connected with the error processing system. The cabinet body is provided with an electricity meter bin, the electricity meter bin is provided with a drawer, the drawer comprises a panel and a bottom plate, the panel is perpendicular to the bottom plate, the panel is used for shielding an opening of the electricity meter bin, a ball screw is arranged between the bottom plate and the inner wall of the electricity meter bin, and the cabinet body is provided with an observation window. An observation window is arranged on the cabinet body, a transparent cover is installed at the observation window, the observation window is located above the electric meter bin, a cabinet door is arranged on the cabinet body, and the calibration device can enable calibration of the electric energy meter to be simpler and more convenient.

The invention provides a wind tunnel test attack angle mechanism pose parameter tracing method, and the method comprises the steps: according to the working principle of a wind tunnel test attack angle mechanism, combining the actual working conditions of the wind tunnel test attack angle mechanism in low-speed, high-speed and ultra-high-speed wind tunnels, a calibration device composed of a laser tracker, a laser total station, an angle sensor, a double-frequency laser interferometer or micrometer, a micrometer indicator and the like tracing the pose parameters of the wind tunnel test attack angle mechanism by adopting a direct measurement method, analyzing and evaluating the uncertainty of the measurement results of the displacement and angle of the wind tunnel test attack angle mechanism, accurately evaluating the technical performance of the wind tunnel test attack angle mechanism, and realizing the value traceability of the wind tunnel test attack angle mechanism.