185 results about "Performance measuring device" patented technology

A device for use in locating a fault on a power line of a power distribution system includes: at least one sensor for measuring at least one property of the power line, and at least one output device in operative connection with the sensor to signal a state of the power line. The signaled state of the power line is determined from the measured property and indicates whether a fault has occurred in the power line. The output device can, for example, signal a current state or a previous state of the power line. The device can further include a controller in operative connection with the output device to control the operation of the output device based upon at least one of the current state or the past state of the power line. A device for use in measuring a property of power line of a power distribution system includes: a connector adapted to place the device in operative connection with the power line in the power distribution system without taking the power line out of operation; a sensor for measuring a property of the power line, and an output device in operative connection with the sensor to transmit a signal representative of the measured property.

A device for measuring elastic properties, comprising a long bar-like probe base (42) and probes (50a, 50c) fitted to the probe base (42) driven as to be pressed against and withdrawn from a living body tissue. The probes are so formed that generally semi-spherical contact balls (58) having stress detection bases (56) are fitted to the ends of leaf strings (52) and stress detection sensors (60) are disposed on the stress detection bases (56). Light-receiving elements are fitted to the opposite side of the leaf displacement sensors (62a, 62b). The stress sensors (60) and displacement sensors (62a, 62b) are connected to the device body through signal lines (92, 94), respectively. The profile of the displacement of the tissue is calculated and displayed in a manner indicating correlation with stress.

Footwear for an individual such as a cyclist is provided with a performance measurement device for measuring the individual's performance. A first exemplary article of such footwear includes a shoe in combination with an optional means for substantially immobilizing the shoe to a pedal of a cycle, e.g., a cleat, and the performance measurement device. A second exemplary article of such footwear is a sock in combination with the measurement device. Typically, the measurement device is embedded or located within the footwear and is not mounted to an exterior surface, e.g., the bottom sole surface, of the footwear.

A performance measuring device of a surface light source lamp comprises a horizontal baseboard, a support and a testing table. The support comprises a vertical support and a horizontal support, the vertical support is vertically fixed on the horizontal baseboard, the horizontal support is horizontally arranged on the vertical support and is capable of being in parallel translation vertically, and the horizontal support is provided with a lamp fixing device. The testing table comprises a horizontal disc, a probe and a detector, the horizontal disc is arranged on the horizontal baseboard and capable of rotating for 360 degrees, the horizontal disc is provided with a linear guiderail, the probe is installed on the linear guiderail and capable of moving along the linear guiderail, and the detector is arranged on the horizontal baseboard and connected with the probe. The performance measuring device is simple in structure, eliminates uncertainty in measuring, leads measuring to be standard, and can be used in measuring of parameters including light intensity, spectrum, color temperature, surface temperature and color rendering index of various surface light source lamps including light-emitting diode surface light source lamps, organic light-emitting diode surface light source lamps and electroluminescence surface light source lamps.

The invention relates to a detection device and the method for the thermoelectric electric power generation performance. The detection device is made up of the thermal resource, the cooling end, the DC, the standard load resistance, the multicenter data collector, the computer ,the thermocouple and the vacuum pump. The method is to install the two thermoelectric power generation devices between the thermal resource and the cooling end at the same time, the output of which is connected with the standard load resistance, so it can get the output power by changing the standard load resistance which contrasts to the input power to get the energy conversion efficiency. The invention can avoid the heat loss of the input measurement system by using the double detection symmetrical thermal resource, comparing to the present method, the device has the simple structure and high efficiency, and also it can detect the energy conversion efficiency directly.

This invention belongs to magnetic electricity material domain, which conretely relates to using fictitious multichannel phase-locking enlarging principle to implement test material magnetic electricity function method and device of computer control. This invention make phase-locking amplifier fictitious, which is that computer software implements function of phase-locking amplifier. It is very convenient to carry out phase-locking agnification process for random multipath signal by using fictitious phase-locking amplifier. Therefore, it not only precisely automatically survey dE and dH, improve magnetic electricity function measurement precision, but also work frequency limit is boosted a lot compared to hardware phase-locking amplifier, meanwhile decrease manufacture cost of magnetic electricity measuring device. This invention also combines control and measurement of apposition cocurrent offset magnetic field to boost automaticity of magnetic electricity measuring device, thereby improve precision and efficiency of magnetic electricity measurement.

Disclosed is an apparatus used for measuring medium insulating property in the gas-liquid phase flow state, a heating device (20) is positioned at the bottom part of an airtight container (10), and a condensing device (90) is positioned at the upper part of the airtight container (10). The condensing device (90) is provided with a water inlet (100) and a water outlet (110) penetrating through the top plate of the airtight container (10). A high voltage electrode (50) and a low voltage electrode (60) are positioned at the middle part of the airtight container (10), and penetrate into the airtight container (10) from two relative directions; and a liquid medium (40) under test is added into the airtight container (10), the heating device (20) heats the liquid medium (40) to boil in the two-phase flow state, the steam generated by the liquid medium (40) after boiling evaporation is cooled by the condensing device (90) to turn into liquid and flow back to the bottom part of the airtight container (10). The apparatus can be used for measuring insulating properties of various liquid media and solid insulation materials in the liquid medium environment under the gas-liquid phase flow state.

This invention provides a test device of material sound-proof property, which comprises signal generator, sound-proof box, and sound degree device, wherein, the signal generator is connected with the loudhailer in the sound proof box with one side fixed with the sound proof board of the test material. The sound degree device is fixed relative to the sound proof board. The test material of the invention is convenient and is suitable to the test of the polymer materials and glass and rock.

The invention belongs to a performance measuring device for a machine tool component, and particularly relates to a performance test bench for an electric spindle. The performance test bench comprises an installation platform, wherein an elevating platform and a cross-shaped platform are fixed on the installation platform; a loading electric spindle is arranged on a V-shaped installation frame ofthe elevating platform; a tested electric spindle is arranged on a V-shaped installation frame of the cross-shaped platform; the two ends of an elastic shaft are connected with the output ends of theloading electric spindle and the tested electric spindle; a plurality of reflecting stripes of the same shape are uniformly sprayed at symmetrical positions on the outer circumferential surfaces of the two ends of the elastic shaft with a reflecting material; an optical fiber focusing lens is arranged on a focusing lens installation frame on one side of the elastic shaft; the loading electric spindle is connected with an energy feedback device; the tested electric spindle is connected with a variable-frequency device; and the optical fiber focusing lens is connected with a measuring circuit through a photoelectric switch. The performance test bench has the characteristics of simple structure, convenience for operating, accuracy in measurement and capability of realizing high rotating speed measurement through a photoelectric detection technology.

The invention relates to a thermoelectric performance measuring device and a measuring method of a thermoelectric refrigeration chip. The thermoelectric performance measuring device comprises a water cooling radiator, a constant temperature bath, a direct current voltage stabilizing and current stabilizing power supply, a thermoelectric refrigeration chip, platinum resistors, a data collector, a computer, a multichannel electric parameter measuring apparatus, a vacuum pump and a vacuum cover, wherein the hot end face of the thermoelectric refrigeration chip is adhered on the water cooling radiator, the water cooling radiator and the constant temperature bath are mutually connected to perform cold-heat exchange, the direct current voltage stabilizing and current stabilizing power supply is connected with the two electrodes of the thermoelectric refrigeration chip, the two platinum resistors are respectively adhered on the cold end face and the hot end face of the thermoelectric refrigeration chip, the platinum resistors are used for collecting temperature values and sending the temperature values to the data collector, and the data collector collects data and sends the data to the computer; the multichannel electric parameter measuring apparatus respectively collects the working voltage, the working current and the thermal electromotive force of the thermoelectric refrigeration chip and sends the data to the computer; and the water cooling radiator and the thermoelectric refrigeration chip are arranged in the vacuum cover, and the vacuum pump is used for pumping the air in the vacuum cover. The device is simple, the cost is low, the testing process is simple and the measuring precision is high.

The invention discloses a measuring device and method for a vacuum sealing performance. The device comprises a first standard leaking hole (1), a second standard leaking hole (2), a third standard leaking hole (3), a getter pump (4), a sealed container (5), an angle valve (6), a current-limiting holes (7), a molecular pump group (8), a first dry mechanical pump (9), a gate valve (10), a vacuum gauge (11), a quadrupole mass spectrometer (12), and a measuring chamber (13). In addition, according to the method, an overall leakage rate of the sealed container (5) is measured by using a dynamic method or a static accumulation method and thus a sealing performance of the sealed container is represented; the dynamic method is suitable for large-leakage-rate measurement and the measuring range is associated with a minimum detectable signal and orifice conductance of the quadrupole mass spectrometer (12); and the static accumulation method is suitable for low-helium-leakage-rate measurement and the helium leakage rate of the sealed container (5) is calculated based on measurement on helium partial pressures accumulated in the room by the quadrupole mass spectrometer.

A thermal property measurement apparatus capable of directly measuring thermal conductivity distribution in a ROI within a target only by measuring the temperature distribution that already exists in the ROI without generating other temperature fields artificially. The thermal property measurement apparatus includes a temperature detector for measuring temperatures at plural positions in the ROI, a distance controller for controlling a distance between the temperature detector and the target, a scanner for changing a relative position therebetween, a stage for putting the object thereon, a recorder for recording measured temperature data, position data and time data, a determination unit for determining whether at least one of thermal conductive phenomena and convection phenomena is dealt with or not, a processor for calculating thermal conductivity distribution in the ROI from the recorded data and temporal changeable references of the thermal conductivity in the ROI, and a controller.

The invention belongs to the field of structural ceramic sample dielectric performance measurement technology, and relates to a structural ceramic sample dielectric performance measuring device. A microwave sintering device is internally provided with a temperature acquisition device and a sample. Two ends of the sample are provided with parallel plate capacitors. The temperature acquisition device and the sample do not contact each other. Lead wires which are introduced from the sample and the temperature acquisition device are respectively connected with a dielectric performance testing device and a temperature measuring device. A data processing system is connected with the dielectric performance testing device and the temperature measuring device. The dielectric performance testing device and the temperature measuring device respectively transmit obtained data information to the data processing system. The data processing system processes data which are transmitted from the temperature measuring device and the dielectric performance testing device, thereby obtaining the dielectric constant and the dielectric loss of the sample at different frequencies and different temperatures. The structural ceramic sample dielectric performance measuring device has advantages of simple structure, convenient operation and scientific principle. The changing rule of the structural ceramic sample dielectric performance along with the temperature can be obtained in real time.

The invention discloses an ultrasonic cutting testing platform for a honeycomb material. The platform comprises a five-axis moving platform, a special mechanical main shaft device for ultrasonic cutting, a cutting temperature measuring device, an ultrasonic vibrating performance measuring device, a honeycomb material clamping device and a cutting force measuring device. The platform is characterized in that the special mechanical main shaft device for ultrasonic cutting is fixed to an A / C front sway of the five-axis moving platform; the cutting force measuring device is fixed to a worktable ofthe five-axis moving platform; the honeycomb material clamping device is fixed to the cutting force measuring device; and the cutting temperature measuring device and the ultrasonic vibrating performance measuring device are fixed to the special mechanical main shaft device for ultrasonic cutting. The ultrasonic cutting testing platform disclosed by the invention is suitable for different types of ultrasonic cutting tools, is suitable for honeycomb materials of different specifications and different dimensions, and is various in test types.

The invention relates to an activated sludge settling concentration comprehensive performance measuring device and measuring method, and is characterized in that the measuring device comprises a settling column; the settling column comprises an upper-layer chamber and a lower-layer chamber; a drain pipe is arranged on the bottom of the upper-layer chamber; a water suction pump is arranged in the lower-layer chamber; an inlet of the water suction pump is connected with a sampling pipe penetrating through the side wall of the lower-layer chamber; an outlet of the water suction pump is connected with a pipeline extending into the upper-layer chamber; an aerator is arranged in the lower-layer chamber and is connected with an aeration head through a gas pipe extending into the upper-layer chamber; an ultrasonic signal transmitting sensor and an ultrasonic signal receiving sensor are arranged on the top of the upper-layer chamber; an infrared light emission sensor and an infrared light detector are arranged at the middle part of the upper-layer chamber.

The invention discloses a contracting-expanding type earth-rock hybrid normal position mechanical property measuring device, which comprises a feeler lever, a tubular sealing cavity, a base, an expanding lever, an expanding board, a rigid hollow lever, a clamper and the like. The feeler lever has preset length, the tubular sealing cavity can expand along the axial direction, the base is sleeved at the other end of the sealing cavity, one end of the expanding lever is installed on the base in rotating mode, the expanding board is installed on the expanding lever, the rigid hollow lever is sleeved in the feeler lever and the sealing cavity, a nozzle is arranged on a section of the hollow lever arranged in the sealing cavity, and the clamper is arranged at the other end of the hollow lever extending out of the base. The contracting-expanding type earth-rock hybrid normal position mechanical property measuring device can finish expanding in holes and earth-rock breaking, forms a complete breaking surface, adopts high-pressure air or high-pressure water injecting, leads the sealing cavity to expand for supplying lateral pressure, damages normal position earth-rock hybrid through shearing in the process for raising the probe device, monitors and records data, and then changes testing depth so as to achieve testing of different-depth earth-rock normal position mechanical property parameters.

[Problem to be Solved] To provide a property measuring device for measuring a measurement object, which can highly reliably extract an electric signal serving as the measurement object from an electromagnetic field noise or the like generated by an acoustic wave generating source even if the acoustic wave is a continuous wave, while a high spatial resolution is maintained, by using an acoustic wave as a properly measuring means for measuring an object and method thereof.[Means for Solving the Problem] A property measuring device 100 for measuring a measurement object of the present invention includes: an acoustic wave emitting portion 40 arranged away from a measurement object 90 and emitting an amplitude-modulated acoustic wave; a receiver 50 for receiving an electromagnetic field generated when the acoustic wave is emitted to the measurement object 90; and a measuring portion 60 for extracting at least one type of properties selected from a group consisting of an electric property, a magnetic property, an electromechanical property, and a magnetomechanical property of the measurement object 90, based on at least one measurement selected from a group consisting of measurements of a strength, a phase, and a frequency of the electromagnetic field.

The invention relates to a thermal property measurement device for a semiconductor luminescent device to measure junction temperature, thermoresistance and the like thermal property parameters of the semiconductor luminescent device, which can be matched with other tested components and comprises a light measurement device, a temperature control device, and an electric driving and measuring circuit electrically connected with the light measurement device and the temperature control device; wherein the light measurement device and the temperature control device are arranged up and down; and the electric driving and measuring circuit can be electrically connected with the tested components. The device has the remarkable progress that: 1. as the light measurement device and the temperature control device are arranged up and down, when the semiconductor luminescent device is picked and placed on the device, the opposite position of the light measurement device and the temperature control device can be adjusted, the operation is simple and convenient; 2. a photoelectric measuring instrument can accurately measure light quantity, radiation measurement and the like light parameters; 3. a radiator has reasonable structure, favorable convection environment during work and good radiation effect; 4. a positioning measurement device is arranged for measuring the opposite position of the light measurement device and the temperature control device, which can avoid abnormal operation occurrence.

The invention provides an angle-adjustable material pressure resistance measuring device. The device comprises a loading rod for pressure application, a base, a first angle adjusting mechanism, and asecond angle adjusting mechanism, wherein the loading rod is connected with the first angle adjusting mechanism; the base is connected with the second angle adjusting mechanism; and the first angle adjusting mechanism is opposite to the second angle adjusting mechanism, so that a pressure can be applied on a material to be tested. The angle-adjustable material pressure resistance measuring deviceprovided by the invention has the advantages that through the first angle adjusting mechanism and the second angle adjusting mechanism, compression and shearing effects on the material can be effectively simulated, so that the pressure resistance of the tested material can be more objectively and accurately measured; and the structure is simple, the operation is easy, and component replacements caused by angle changes are avoided.

The invention provides a ground testing system for flight performance of an unmanned aerial vehicle. The ground testing system comprises a two-axis rotating platform testing device and a performance measuring device connected with the two-axis rotating platform testing device. The two-axis rotating platform testing device comprises a rotating platform control mechanism and a rotating platform mechanism connected with the rotating platform control mechanism; the rotating platform mechanism is used for driving an unmanned rotorcraft, and the rotating platform control mechanism is used for controlling the unmanned rotorcraft; the performance measuring device comprises an unmanned aerial vehicle information measuring sensor and a data acquisition analysis device; the unmanned aerial vehicle information measuring sensor is arranged on the unmanned rotorcraft; and the data acquisition analysis device is connected with the unmanned aerial vehicle information measuring sensor. According to theground testing system for flight performance of the unmanned aerial vehicle, provided by the invention, aiming at the testing platform designed aiming at the small unmanned rotorcraft, the system issimple, and the production cost is low.

The invention relates to the field of metallurgy and provides a temperature synchronizing system and method used for a metallurgic performance measuring device. The temperature synchronizing system comprises a temperature measuring system, a furnace temperature adjusting system and a central control module, the temperature measuring system comprises furnace temperature thermocouples and a material temperature thermocouple arranged at the center of an experiment sample in a furnace, the furnace temperature thermocouples are arranged on furnace walls of three heating sections respectively, the furnace temperature adjusting system comprises silicon controlled rectifiers arranged on resistance wires of the heating sections, and the central control module comprises a communication module, a material temperature control PID (proportion, integration and differentiation) algorithm module, a furnace temperature control PID algorithm module and a pulse heating PID control module. Heating processes of the three independent heating sections are unified by adopting an indirect control method and taking temperature increase speed of furnace temperature as a controlled object, so that influence on control accuracy due to difference in heating and cooling capability of each section in a conventional method is eliminated, inter-section temperature difference is reduced greatly, and uniformity in sample temperature is improved.

There are proposed an optical fiber property measuring device and an optical fiber property measuring method which can enhance spatial resolution more than before. In the present invention, in synchronization with frequency modulation applied to x-polarized light, intensity modulation is also applied to the x-polarized light by an intensity modulation means. This makes it possible to increase or decrease the intensity of the x-polarized light at a specific frequency, thereby allowing the effective length of a Brillouin dynamic grating formed by the x-polarized light to be adjusted. As a result, the shape of the reflection spectrum obtained when y-polarized light is reflecting by the Brillouin dynamic grating can also be adjusted optimally, which leads to enhancement of spatial resolution with the y-polarized light.

The invention relates to a resolution ratio performance measuring device of a cone beam CT and a calibration method. The measuring device comprises a transverse resolution ratio measuring module and a longitudinal resolution ratio measuring module. By means of the device, the transverse resolution ratio and the longitudinal resolution ratio of the cone beam CT can be calibrated. The calibration method includes the steps of conducting collecting and three-dimensional reconstructing on the cone beam CT through the two modules of the measuring device, generating an edge expansion function on the central cross section of the transverse resolution ratio measuring module and the central coronal plane of the longitudinal resolution ratio measuring module, calculating a modulation transmitting function on the basis of the edge expansion function, and selecting the space frequencies at the 10% modulation degree as the transverse resolution ratio and the longitudinal resolution ratio of a system of the cone beam CT respectively. The resolution ratio performance measuring device of the cone beam CT and the corresponding calibration method are disclosed. The device has the advantages of being simple in structure and low in cost, and the calibration method has the advantages of being easy to implement and capable of meeting the measuring requirements of the transverse resolution ratio and the longitudinal resolution ratio of the cone beam CT.

The invention discloses a device and a method of measuring an infiltration performance of a porous metal material on the basis of digital image processing. In the invention, a diffusion process of a drop on the porous metal material by a super depth microscope is recorded, and then the monitored record is processed to quantitatively obtain drop diffusion edge and diffusion speed. When the drop is diffused on the porous metal material, the image pixels of a diffusion zone image is changed through comparison with a background image, so that the drop diffusion process and the drop diffusion zone edge are accurately obtained through the digital image processing and further drop diffusion diameter and drop diffusion rate are quantitatively calculated, thereby solving a problem that the drop diffusion zone edge is fuzzy and is difficult to position in a liquid dropping observation method. The device and the method are especially suitable for diffusion of a transparent liquid work medium and provide reliable measurement of testing and evaluating the infiltration performance of the porous metal material. The method also can be developed and used in the fields of tests of infiltration performances of other porous medium materials.

The invention relates to the technical field of soil infiltration performance measurement, and discloses a farmland plow pan soil infiltration performance measuring device and a method thereof. The device provided by the invention comprises a constant flow water supply device, an infiltration ring, a draining container and two flow sensors, wherein the constant flow water supply device is connected with the infiltration ring through a first water pipe; the infiltration ring is connected with the draining container through a second water pipe; the constant flow water supply device is disposed on one of the flow sensors; and the draining container is disposed on the other flow sensor. According to a water balance principle, the invention brings forward the farmland plow pan soil infiltration performance measuring method and its corresponding measuring device. The method and the device can be conveniently applied in field tests. In addition, the device provided by the invention is convenient to carry, is simple to operate, can be used to obtain data instantly, and automatically operates under the control of a computer, thus saving a lot of time, manpower and material resources.

The invention discloses an electrocaloric performance measuring device. The electrocaloric performance measuring device comprises a measuring chamber used for placing a material to be tested, a temperature control system, a power source, and a temperature sensor; the temperature control system is used for heating or cooling the air and the material to be tested in the measuring chamber to a preset measuring temperature; the power source is used for loading the material to be tested with a periodic voltage based on control signals so as to obtain electrocaloric heat energy or cold energy generated by the material to be tested; the temperature sensor is used for collecting heat exchange energy between the material to be tested and the environment in the measuring chamber, and sending signals to an external signal acquisition system, so that the electrocaloric performance of the material to be tested is obtained. According to the electrocaloric performance measuring device, the temperature sensor is used for directly measuring the temperature change of the electrocaloric material in a charging and discharging cycle, so that the electrocaloric performance of the electrocaloric material at different temperatures in different electric fields can be measured rapidly and accurately, measuring errors in indirect measuring caused by numerical calculation and simulation are avoided, electrocaloric performance measuring accuracy and credibility are increased, and convenience is provided for technical staff in research and application fields of electrocaloric materials.

The invention relates to a negative ion performance measuring device and method for negative ion textile. The negative ion performance measuring device for negative ion textile comprises a cover-shaped glass box body (01) and a box body base (02) arranged below the glass box body (01), a winding press roller (03), a transmission press roller (04) and a heating resistor (05) installed in the glassbox body (01) and located on a box body base, and a temperature sensor (032) and a pressure sensor (042) installed in a winding roller (031) of the winding press roller (03) and a transmission roller(041) of the transmission press roller (04) respectively. The device also comprises an external test controller (06), a negative ion tester (07), an air inlet fan (09) installed on an air inlet of theglass box body, an exhaust fan (11) installed on an exhaust port of the glass box body, and a hollow pipe (071) connecting the negative ion tester and the exhaust port of the glass box body. The testcontroller (06) is electrically connected with the heating resistor (05), motors used for driving the winding press roller (03) and the transmission press roller (04) to rotate, and the temperature sensor (032) and the pressure sensor (042). The negative ion performance of negative ion fiber and negative ion fabric can be accurately measured.

The invention belongs to a hydrogen measuring device and particularly relates to an accurate measuring device of hydrogen diffusion and permeation characteristics in a coating. The tritium-blocking coating hydrogen diffusion and permeation performance measuring device comprises a sample chamber, the sample chamber comprises an outer vacuum chamber and an inner vacuum chamber, the sample chamber isconnected to a water cooler, the water cooler is used for cooling the sample chamber, the inner vacuum chamber of the sample chamber is respectively communicated with an inner vacuum chamber molecular pump and an inner vacuum chamber mechanical pump through valves, and the inner vacuum chamber molecular pump and the inner vacuum chamber mechanical pump are used for vacuumizing the inner vacuum chamber. The outer vacuum chamber of the sample chamber is respectively communicated with an outer vacuum chamber molecular pump and an outer vacuum chamber mechanical pump through a quadrupole mass spectrometer. The outer vacuum chamber molecular pump and the outer vacuum chamber mechanical pump are used for vacuumizing the outer vacuum chamber. The quadrupole mass spectrometer is respectively communicated with an industrial control computer and an ion pump. The sample chamber is communicated with an air chamber through a standard leak. The measuring device can accurately control the temperature of the test sample and complete the test at different temperatures.

Disclosed herein is a property measurement apparatus including: a first plate installed in a state of being rotatable and / or vibratable; and a second plate placed to face the first plate and provided with an impedance measurement section, wherein a stress caused by a distortion generated by rotating or vibrating the first plate to serve as a distortion given to a sample provided in a gap between the first and second plates is measured, and at the same time, the impedance measurement section measures the impedance of the sample.