40results about How to "Measure real" patented technology

The invention discloses a testing device for the frictional coefficient of a cutter and a workpiece under a supersonic vibration condition. The testing device comprises a machine tool workbench, a machine tool main shaft, an ultrasonic vibration loading system, a clamp, a piezoelectric three-way resistance dynamometer, a charge amplifier, a data collecting device, a data analysis system and a computer; a cutter material test piece is enabled to apply exert load onto a workpiece material test piece through the moving of the machine tool main shaft, the workpiece material test piece and the cutter material test piece are driven to form friction motion through the motion of the machine tool workbench, the piezoelectric three-way resistance dynamometer detects electrical signals, converts simulating signals into digital signals and then input the digital signals into a computer finally after passing through the charge amplifier, the data collecting device and the data analysis system, and then the friction coefficient of the cutter and the workpiece can be output through software analyzing and calculating. The testing device provided by the invention has the advantages that the accuracy is high, the operation is convenient, conventional machine tool equipment and resistance dynamometers of research organizations can be fully used, and the friction coefficient of samples in different shapes and made of different materials can be tested under different ultrasonic vibration conditions and common processing conditions.

The invention discloses a while-drilling lateral resistivity well test system and a signal detection method based on the capacitively coupled contactless conductivity detection (C4D) technology. The problem that according to traditional while-drilling lateral resistivity well test, measurement under the oil base drilling liquid cannot be achieved is solved. According to the method, an alternating current measurement channel of well test is simplified to and is equivalent to a series connection model of the borehole capacitance and the formation resistivity, the amplitude and the phase position of the well test weak signal are obtained through the digital phase sensitive demodulation technology, and the formation resistivity can be worked out according to related models. A set of while-drilling lateral resistivity well test simulation test device is designed on that base, simulated well test experiments are conducted under the frequencies of 10 kHz, 15 kHz, 20kHz and 25 kHz, researches show that the method is feasible, and the method is suitable for high-resistivity formation while-drilling resistivity well test under the oil base drilling liquid.

The invention relates to a device and method for measuring a contact angle of a solid surface based on an ultrahigh vacuum condition. According to the device, one end of a closed system formed by a metal cavity is connected with an ultrahigh vacuum system through a gate valve, and is used for controlling pumping and inflating the device; two opposite windows are formed in the cavity, and droplets on a sample surface can be imaged; a full-scale vacuum meter is connected on the cavity, and the vacuum degree of the cavity can be detected; a sample transfer rod is arranged in the cavity, and is used for transferring a sample between the device and the ultrahigh vacuum system; a sample table is arranged in the cavity, and is used for loading a sample; a capillary tube with a liquid inlet valve is arranged in the cavity, and is used for regulating microliter-grade droplets; a light source and a CCD camera are arranged outside the cavity, and are used for imaging droplets through the windows; a liquid inlet gun arranged outside the cavity realizes droplet microliter-grade regulation together with the capillary tube; and an air extracting unit arranged outside the cavity is used for pumping the cavity.

The invention discloses a method for testing heat insulation temperature of a thermal barrier coating. The method comprises the following steps: (1) respectively welding K-type thermocouples on backs of a coating sample and a coating-free sample of a same base material, and respectively and fixedly mounting the thermocouples in two through holes of an improved heat insulation furnace door of a resistance furnace, wherein the backs of the samples are directly contacted with the atmosphere, and the front surface of each sample faces a hearth; (2) mounting two S-shaped thermocouples on the heat insulation furnace door, wherein a contact of each S-shaped thermocouple is tightly attached to the front center of one sample; (3) electrifying and heating a resistance furnace, transmitting a temperature signal to a digital temperature recorder through the S-shaped thermocouples, stopping heating when the internal furnace temperature reaches 1100 DEG C and is stabilized for a period of time, performing furnace cooling on the samples, and drawing a temperature curve according to temperature data of the temperature recorder, wherein the heat insulation effect DeltaT of the thermal barrier coating is the difference of the back temperature of the coating-free sample and the back temperature of the coating sample.

The invention provides a GPS clock signal-based high voltage capacitive equipment insulation online monitoring system, including an on-site monitoring unit comprising a CPU, a wireless communication module which is 2.4GHz wireless communication module, a GPS clock receiving module, and a on-site monitoring current unit and a on-site monitoring voltage unit installed on the same bus line, and a station terminal control computer. An insulation online monitoring method includes that: the station terminal control computer sends synchronous remotely collection order to each on-site monitoring unitvia 2.4GHz wireless network; each on-site monitoring unit receives GPS clock signal and realizes synchronous remotely collection of each on-site monitoring unit on the booking time, comparing the uploaded information, calculates equivalent capacitor, end screen current and dielectric loss factor of high voltage capacitive equipment after the each on-site monitoring unit obtains end screen currentsignal with clock signal or sequence number and PT secondary side voltage signal.

The invention relates to a method and an apparatus for measuring the glass micro-bead refractive index. According to the present invention, when the refractive index of a high-refractive index glass micro-bead is measured, a reflecting mirror adjustment device and a camera five-dimensional adjustment device are adjusted so as to make the camera center, the light absorption center, and the hole center of the reflecting mirror having the hole coaxial, a single-mode He-Ne laser emits laser, the laser finally irradiates onto the glass micro-bead through a series of reflections and transmissions, a secondary rainbow image is obtained on a receiving screen, the camera collects the image, the receiving distance from the glass micro-bead to the receiving screen is measured, the radius of the outermost ring of the rainbow stripes is measured, the minimum deviation angle of the secondary rainbow of the glass micro-bead to be measured is calculated, and the refractive index is calculated through inversion of the minimum deviation angle; and when the refractive index of a low-refractive index glass micro-bead is measured, a spring locking device is opened, the instruments are adjusted so as to make the system in which the camera, the receiving screen and other devices exist rotate 90 DEG, the fixation is performed through a support frame, other steps are the same as the steps for measuring the refractive index of the high-refractive index glass micro-bead, and the minimum deviation angle of the primary rainbow of the glass micro-bead to be measured is calculated so as to calculate the refractive index through the inversion.

The invention relates to a lightning electromagnetic pulse shielding effectiveness measurement device and method, including a DC high-voltage generator, a charging switch, a current-limiting resistor, a non-inductive pulse capacitor, a tungsten-embedded switch, an AC-DC voltage divider, an adjustable inductance, a large transmission line, Adjustable water resistance, pulse electric field optical fiber measurement system, pulse magnetic field optical fiber measurement system, shielding cabinet and oscilloscope, characterized in that: after the DC high voltage generator charges the non-inductive pulse capacitor to a given voltage through the charging switch and the current limiting resistor, the The tungsten switch discharges the energy stored in the capacitor through the adjustable inductance to the large transmission line and the adjustable water resistance to generate lightning electromagnetic pulses. The shielding body to be tested is placed in the transmission line, and the pulse electromagnetic field inside and outside the shielding body is measured at the same time to calculate its shielding effectiveness. The shielding effectiveness of the shielding body against various lightning electromagnetic pulse electric fields and magnetic fields can be measured more realistically and simultaneously.

The invention relates to an acquisition and control module for a multi-user prepaid watt-hour meter, which comprises a circuit board, a magnetic latching relay, a current transformer, metering chips,a memory chip, a first socket and a second socket, wherein the magnetic latching relay is provided with a first connection bar and a second connection bar; the first connection bar is provided with afirst needle-shaped raised pin; the second connection bar is provided with a second needle-shaped raised pin; a connection soft wire passes through the current transformer to be welded with the secondconnection bar; the current transformer is clamped in a hole in the circuit board; and the magnetic latching relay is welded with the circuit board through the first needle-shaped raised pin and thesecond needle-shaped raised pin. One-path three-phase or three-path single-phase electric parameter measurement and prepaid power cut and transmission functions can be realized; acquisition of each path of current and voltage signals is processed by an independent metering chip, and in comparison with a single metering chip scheme, real-time and real electrical parameters are measured, and the measurement accuracy is higher and more reliable.

The invention relates to weld detection and specifically discloses a measurement method for measuring a tube-tube sheet fillet weld incomplete penetration defect height. A measurement system comprisesan X-ray machine, transillumination film and a scale. A ray focus of the X-ray machine is placed in a tube. The transillumination film and the scale are placed outside of a to-be-measured weld in sequence. When the tube ray focus irradiates the to-be-measured weld, an image of an incomplete penetration defect on the to-be-measured weld can be formed on the transillumination film. An image scale value can be read through utilization of the scale. According to the measurement system, the blank that a weld incomplete penetration height control requirement exists and no measurement method existsat home and abroad is filled. Through adoption of the system for measuring the tube-tube sheet fillet weld incomplete penetration defect height, the measurement operation is simple and rapid, a measurement result is true and reliable and is good in consistency. The system has important significance in evaluating whether the incomplete penetration defects exceed a standard or not.

The invention discloses a device and a method for measuring the refractive index of low refractive index glass beads. A perforated reflector adjusting device and a camera five-dimensional adjusting device are adjusted, so that the center of a camera, the center of a light absorption device and a hole center of a perforated reflector are coaxial, a single-mode helium-neon laser emits laser light finally irradiating the glass beads after a series of transmission and reflection, a primary rainbow image is formed on a receiving screen, the camera acquires the image, the receiving distance from the glass beads to the receiving screen is measured, the radius of an outermost ring of a rainbow stripe of the rainbow image is measured, the minimum deviation angle of the primary rainbow image of the glass beads to be measured is calculated, and the refractive index is back calculated according to the minimum deviation angle.

The invention relates to a method and an apparatus for measuring the glass micro-bead refractive index. According to the present invention, when the refractive index of a high-refractive index glass micro-bead is measured, a reflecting mirror adjustment device and a camera five-dimensional adjustment device are adjusted so as to make the camera center, the light absorption center, and the hole center of the reflecting mirror having the hole coaxial, a single-mode He-Ne laser emits laser, the laser finally irradiates onto the glass micro-bead through a series of reflections and transmissions, a secondary rainbow image is obtained on a receiving screen, the camera collects the image, the receiving distance from the glass micro-bead to the receiving screen is measured, the radius of the outermost ring of the rainbow stripes is measured, the minimum deviation angle of the secondary rainbow of the glass micro-bead to be measured is calculated, and the refractive index is calculated through inversion of the minimum deviation angle; and when the refractive index of a low-refractive index glass micro-bead is measured, a spring locking device is opened, the instruments are adjusted so as to make the system in which the camera, the receiving screen and other devices exist rotate 90 DEG, the fixation is performed through a support frame, other steps are the same as the steps for measuring the refractive index of the high-refractive index glass micro-bead, and the minimum deviation angle of the primary rainbow of the glass micro-bead to be measured is calculated so as to calculate the refractive index through the inversion.

The invention relates to a volume estimation method for a mineral resource set, and solves the problem that a large error exists between the calculated volume and the actual volume in the volume estimation process of a traditional ore body (block section). According to the method, three-dimensional mining software is utilized; a three-dimensional spatial form of the ore body is simulated in a computer; the volume of an ore body (block section) is read from a computer, the average grade of a single ore body (block section) is calculated by using the computer, the resource / reserve of the singleore body (block section) is calculated by using the product of the volume and the average grade and the ore specific gravity, and the resource / reserve of each ore body (block section) is summarized to obtain the resource / reserve value of the whole ore deposit. According to the method, the problem that errors are generated in the links of projection area measurement, ore body (block section) truethickness calculation and the like is solved, the volume of the ore body (block section) is measured more truly and more accurately, and the resource / reserve estimation precision is greatly improved.

The invention discloses a dynamic model method for measuring a tunnel air resistance coefficient of a high speed train and application of the dynamic model method. The dynamic model method comprises the steps of preparing site equipment, collecting data, drawing a speed curve, drawing an acceleration curve and computing the tunnel air resistant coefficient. The main steps are as follows: placing a motor train unit model on a dynamic model experiment platform and enabling the motor train unit model to be connected with an accelerating mechanism; setting a light reflection zone; installing a photoelectric detector; installing a data collecting device; connecting a computer when the motor train unit model is in a stop state; when the motor train unit model runs to a set distance in front of a tunnel entrance at a set primary speed, enabling the motor train unit model to begin to slide freely and pass through the tunnel until the motor train unit model stops; emitting visible light to the light reflection zone and receiving and storing reflection light signals by the photoelectric detector; and drawing the speed curve and the acceleration curve and computing the tunnel air resistance coefficient by placing the quality of the motor train unit model, the speed of the motor train unit model and the acceleration of the motor train unit model into the newton second law formula and the Davis empirical formula.

The invention relates to a parallel core holder. The parallel core holder comprises a parallel barrel, an inner gear ring, a base and a rubber cylinder. The parallel core holder is characterized in that the parallel barrel is connected with a front end cover and a rear end cover by virtue of screws, a front sealing piece and a rear sealing piece are respectively arranged in a front sealing slot and a rear sealing slot of the parallel barrel, plugs are connected with the front end cover and the rear end cover by virtue of screws respectively, the rubber cylinder is arranged inside the parallelbarrel, the small end of a square valve element is connected with a fine tuning nut by virtue of a screw thread, the big end of the square valve element is in fit with a square valve pocket, the square valve pocket is arranged in a square through hole in the middle part of the parallel barrel, the parallel barrel is connected with the big end of a connecting rod and a connection block by virtue ofscrews, the connection block is welded at the periphery of the inner gear ring, the inner gear ring is in fit with a planetary gear and a sun gear to form a planetary gear mechanism, the sun gear, aY-shaped baffle and the small end of t connecting rod are respectively in fit with the long end of a rotary rod, a flat key is placed in a key slot of the long end of the rotary rod, and the rotary rod is in fit with a long support and a short support on the base. The parallel core holder provided by the invention has the advantages that an interlayer and a heterosphere stratum can be efficientlyand quickly simulated and related parameters are measured.

The invention discloses a laser light source speckle measurement method, a speckle suppression device and a parameter optimization method thereof. The laser light source speckle measurement method comprises the following steps: laser light emitted by a laser generator is irradiated onto a fluorescence imaging camera; the fluorescence imaging camera Receive laser light within the preset exposure time and generate corresponding image information; collect image information and form a Gaussian distribution image containing speckle, where the speckle appears as high-frequency noise; calculate the speckle after processing the Gaussian distribution image contrast. Since the fluorescence imaging camera in the laser light source speckle measurement method is directly used as the receiving screen of the laser speckle, the influence of the projection screen, the observation angle and position of the camera relative to the screen and other factors are eliminated on the basis of ensuring the consistency of the test, so this measurement method It can truly and reliably measure the speckle contrast of the laser light source, and has high measurement accuracy.

The invention discloses a coupling contact type magnetic flux and temperature detection probe wheel, which comprises a mounting bracket, a wheel frame, a wheel shaft, a coupling tire, probes, an angle sensor, an environment temperature sensor and a data acquisition and processing module, the coupling tire is mounted on the wheel shaft and used for abutting against an external moving part and being driven by the external moving part to rotate; the plurality of probes are uniformly arranged on the inner circular surface of the coupling tire in the circumferential direction; each probe comprises a wireless transmission module and a magnetic flux and temperature sensor module, and the magnetic flux and temperature sensor module is used for collecting magnetic flux and temperature of an external moving part; the angle sensor is connected with the wheel shaft; and the data acquisition and processing module obtains the temperature state and the stress state of the external moving part based on the detected temperature and magnetic flux. Temperature and magnetic flux data are collected and can be used for fault analysis, positioning and prediction, and reliable data support is provided for timely maintenance of external moving parts.