40results about How to "Rich measurement information" patented technology

The invention provides a test unit for monitoring an oil-paper insulation state, and is suitable for the fields of transformers and oil-paper insulation monitoring. The test unit comprises a computer, an electrometer and a control bus communication cable; a high voltage DC power source and an ammeter are arranged in the electrometer; one end of the control bus communication cable is connected with a control bus interface of the electrometer, while the other end is connected with an interface of a control bus control card in the computer; a low voltage end interface of the high voltage DC power source and a grounding interface of the electrometer are grounded together; a high voltage end of the high voltage DC power source is connected with a first electrode of a product to be tested through a high voltage wire; a measuring end of the ammeter is connected with a second electrode of the product to be tested; and the test unit is provided with a control panel capable of displaying and storing data and setting parameters. The test unit is simple to operate, has the current detecting rate at least 1sps, can generate rich measurement information, is convenient to analyze and process test results, and has lower cost than foreign test instruments.

The invention discloses a testing arrangement of an oil paper insulation frequency domain spectrum. An analog output plate and a data acquisition card are inserted in a PCI slot of a computer, and are respectively connected with an analog output card binding post plate and a data acquisition card binding post plate through connection cables. An input terminal and an output terminal of a voltage amplifier are connected with the analog output plate binding post plate and a high voltage terminal of a specimen respectively. Two ends of a resistance voltage divider are connected with the specimen high voltage terminal and the data acquisition card binding post plate respectively. A current input terminal, a voltage output terminal and a control terminal of a current amplifier are connected with a specimen grounding terminal, the data acquisition card binding post plate and the data acquisition card respectively. Grounding terminals of the voltage amplifier, a voltage divider and the current amplifier are connected with a same ground wire. The invention has the advantages of simple operation, accurate measurement, a large amount of obtained information, low cost, no damage of measurement oil paper insulation equipment and a material frequency domain spectrum.

The invention discloses a double-LaBr3 crystal detector element energy spectrum logger based on a controllable neutron source. The double-LaBr3 crystal detector element energy spectrum logger comprises a cylindrical shell, wherein the cylindrical shell is internally provided with a LaBr3 detector I and a LaBr3 detector II from top to bottom, the controllable neutron source is connected with a photomultiplier at the top part of the LaBr3 detector I, a chromium foil is arranged between the LaBr3 detector I and the LaBr3 detector II, and the photomultiplier, the LaBr3 detector I, the chromium foil and the LaBr3 detector II are arranged in a boron sleeve body which is positioned in the cylindrical shell; a tungsten shielding body is arranged between the controllable neutron source and the boron sleeve body, and the controllable neutron source is connected with a neutron detector through a neutron acceleration part. According to the double-LaBr3 crystal detector element energy spectrum logger based on the controllable neutron source, disclosed by the invention, by utilizing the controllable neutron source and the double LaBr3 detectors with high resolution, the content measuring accuracy of elements such as C and Mg and the longitudinal resolution can be increased, the measurement information can be increased, and the purpose of simultaneously determining parameters of stratum element content, mineral content, porosity degree and the like can be realized; the double-LaBr3 crystal detector element energy spectrum logger has the characteristics that the environmental hazard is reduced, effective stratum information is enriched, and the like.

The invention discloses a lung respiration monitoring system based on magnetic detection electrical impedance imaging. By means of an excitation source module, excitation signals are introduced to the chest cavity of an imaging body through a plurality of pairs of excitation electrodes bonded to the measured imaging body; a measurement module is composed of a series of measurement coils and used for measuring the magnetic induction intensity of an induced magnetic field caused by exciting current around the chest cavity; a control module is used for controlling the signal excitation and magnetic field measurement process during the whole respiration monitoring; an image reconstructing module obtains the image change of electrical inductance distribution of the chest cavity in the respiration process according to an electrical impedance image reconstruction algorithm on the basis of magnetic field distribution data. According to the system, the measurement coils of any number can be placed in the space around the chest cavity of the imaging body, limitation of a traditional electrical impedance imaging system on measurement information is changed, the system has the advantages of being high in measurement precision, high in speed and reliability and free of injuries to a human body, more importantly, information amount is increased by means of a magnetic field measurement mode, and therefore the electrical impedance reconstructing ill conditioning is changed, the resolution ratio of electrical impedance (or impedance spectrum) images is increased, and the image reconstruction quality is improved.

The invention relates to an orientation side direction logging instrument and a logging method. A high-resolution orientation resistivity side direction logging instrument mainly comprises an orientation electrode system and a measurement electronic circuit, wherein the electrode system consists of a plurality of side direction electrode rings which have different widths and are embedded on an insulation carrier and an orientation electrode ring M0; the M0 is arranged in the center of the electrode system; 14 electrode rings with different widths and the M0 are in axial symmetry and arranged at different intervals; each homonymic electrode ring is in short circuit through a wire and kept at the same potential; and the homonymic electrode rings, the orientation electrode ring, a reference electrode N and a loop B are connected with the measurement circuit through wires. By the high-resolution orientation resistivity side direction logging instrument and the logging method, a high-resolution side direction curve and an orientation side direction curve can be measured at the same time, and relatively detail logging information can be supplied to logging evolution; the high-resolution logging instrument can identify a thin layer and a thin mutual layer of which the thickness is 0.2 meter, so that an effective logging curve is supplied to thin layer logging; and cracks and caves can be effectively identified.

The present invention relates to the field of measurement technology, and provides a ruler which can solve the problem that the existing ruler has few kinds of scales and monotonous display content. The ruler of the present invention comprises a strip-like body for performing measurement, the strip-like body is a display screen, and the ruler further comprises a circuit unit, which is connected to the display screen and is used for driving the display screen to display. The ruler provided by the present invention can display rich measurement information when measuring an object.

The invention relates to a fault detection and reconstruction system and method based on a dynamic-static hybrid strategy. Firstly, according to the current work mode of a control system, the fault detector and sensor configuration schemes are subjected to combined optimization; on the premise of ensuring the fault detection performance, the system energy consumption is possibly reduced; then, when the fault is detected, the real-time accurate recognition on the fault type is realized through solving the multi-model selection problem; finally, according to the recognized fault type, through the design of the reasonable switching control scheme, the control allocation and the system sterilization can be completed; the autonomous fault detection and reconstitution of the control system under various possible fault conditions can be realized. By using the technical scheme, the static fault monitoring and the dynamic fault type recognition and control system reconstruction are combined. Compared with a conventional fault detection and fault-tolerant control scheme, various kinds of potential faults can be effectively treated; the real-time performance is improved; the energy consumption is reduced; the system and the method can be applied to the high-reliability control problem of control objects of astrovehicles, mechano-electronics, chemical engineering and the like.

The invention relates to a paddy field plow pan information continuous sensing device which comprises an attitude sensor, two sets of feeler lever sensing devices and a data acquisition device. The attitude sensor is installed on a tractor body, and the two sets of feeler lever sensing devices are installed on left and right front wheel main pins of a tractor respectively; the feeler lever sensingdevice comprises a supporting frame, a parallelogram mechanism, a force sensor, an angular displacement sensor, a feeler lever and a constant-pressure mechanism; the supporting frame is relatively fixed to the main pins, the feeler lever, the constant-pressure mechanism and the force sensor ascend and descend relative to the supporting frame through the parallelogram mechanism, and the angular displacement sensor is installed on the parallelogram mechanism. The invention further relates to a paddy field plow pan information continuous sensing method. Plow pan depth information and plow pan depth soil resistance on a running path of the paddy field tractor can be continuously sensed at the same time, measurement means of a paddy field terrain and a soil bearing capacity are enriched, and the device and the method belong to the technical field of soil information sensing.

The invention provides a hyperspectral microscopy imaging and polarization modulation apparatus based on LCTF and a method thereof. The hyperspectral microscopy imaging and polarization modulation apparatus is an integration system by combing a microscopy imaging technology and a hyperspectral imaging and polarization modulation technology. The apparatus comprises a microscopic imaging module, a spectrum splitting module, a polarization modulation module, and an image processing module. The method is characterized in that broadband light source is subjected to light splitting by LCTF, light with different center wavelengths can be output, the specific angle rotation is carried out on a polarizing film, the polarization modulation is carried out on the light from a sample, the image is taken once when a camera is rotated for one time, three-time rotation is taken as a single wave band period, the collected light intensity graph with different polarization information is input into a computer for being processed, and a polarization data cube of the sample under single wavelength is obtained, then a next center wavelength is output by LCTF, the rotation of the polarizing film is repeated, the image taking by the camera is repeated until sampling at each wave band is completed, and a polarization spectrum data set of the sample is obtained. The method has the advantages of simple optical path, low cost, and comprehensive measure information.

The invention discloses a method for measuring a radar cross section by using an extrapolation method. The method includes the following steps that: the position of a transmitting source is aligned with the position of a measured target, so that the transmitting source can be aligned with the measured position of the measured target; in a process in which the transmitting source leaves the measured target, the radiation power or electromagnetic wave amplitudes of the transmitting source under a plurality of measurement positions and received spatial radiation power or electromagnetic wave amplitudes which are scattered by the target are correspondingly obtained; a radar cross section measurement curve which changes with the distance of the transmitting source and measured target is obtained according to the radiation power or electromagnetic wave amplitudes of the transmitting source under the plurality of measurement positions and the received spatial radiation power or electromagnetic wave amplitudes which are scattered by the target; the function of the change of the radar cross section of the measured target with the distance is obtained according to the radar cross section measurement curve; and the distance infinity limit of the function is solved, so that the radar cross section of the measured target can be obtained. The method has the advantages of high measurement accuracy and wide application range.

The invention relates to a gas flux continuous measurement system and a measurement method thereof. The gas flux continuous measurement system is characterized in that a gas flux measurement loop is formed from a gas outlet of a flux cover to a gas inlet of the flux cover through a first three-way electromagnetic valve, a collection gas pump, a gas sensor and a second three-way electromagnetic valve; a gas outlet of the flux cover passes through the first three-way electromagnetic valve, an adjustable flow meter and a vacuum pump to reach a system exhaust port to form a gas exhaust gas path; and an air cleaning air path is formed from a system air inlet to an air inlet of the flux cover through the one-way valve and the second three-way electromagnetic valve. And a main control circuit controls the communication direction of the electromagnetic valve and the start and stop of each pump, the exhaust gas circuit and the cleaning gas circuit work firstly, and then the measurement loop works. A continuous automatic control system is utilized, the accuracy of gas flux measurement is ensured by periodically replacing background air and regularly measuring the gas concentration of the flux cover, continuous long-term measurement of the flux of hydrogen, mercury and helium in soil is achieved, and seismic fault monitoring is facilitated.

The invention discloses a measuring device for measuring gas parameters of a combustion field, belongs to the technical field of flow field optical measurement, and can solve the problem of poor measurement result caused by insufficient light distribution in the flow field in the prior art. The measuring device comprises a measuring ring; each laser emitting unit corresponds to each laser receiving unit group, and the corresponding laser emitting unit and laser receiving unit group are respectively arranged on two opposite side walls of the measuring ring; each laser receiving unit group comprises a plurality of laser receiving units arranged in rows; each single-mode optical fiber corresponds to each laser emission unit; each first multimode optical fiber corresponds to each laser receiving unit; the single-mode optical fiber outputs a laser beam to the laser emission unit; the laser emitting unit converts the laser beam into a fan-shaped light beam, and the laser receiving unit converges the fan-shaped light beam irradiated on the laser receiving unit and couples the fan-shaped light beam into the corresponding first multimode optical fiber. The device is used for flow field gasparameter measurement.

According to a method and device for measuring the pose repetition precision of a robot actuator, the point cloud of a standard object containing plane features is obtained through a 3D vision sensor, the pose repetition precision of the robot actuator is measured by calculating the statistical characteristics of the plane features, and the method and device have the advantages of high measurement precision stability, easy and convenient operation, convenient setting, low cost, high efficiency, abundant measurement information, convenient simulation of repetition precision under a loaded condition and the like.

The invention belongs to the field of moving object surface topography dynamic 3D reconstruction, and particularly relates to a projection grating phase shift generation dynamic 3D measurement method and system, and the method comprises the steps: carrying out the sinusoidal grating projection and sampling of a moving object; fourier spectrum analysis is carried out on the single-frame transient sampling image, and a multi-frame phase shift image sequence is generated; performing high-precision phase solution and phase unwrapping on the phase shift grating sequence by using a phase shift algorithm and a phase unwrapping algorithm to obtain the three-dimensional morphology of the object at the sampling moment; performing 360-degree constant-speed rotation dynamic scanning on the object to obtain three-dimensional shape information of the object at different scanning angles; and carrying out image splicing on the scanned three-dimensional features through a three-dimensional image splicing method so as to obtain 360-degree panoramic dynamic three-dimensional reconstruction information of the measured object. According to the invention, a multi-frame phase shift image sequence is obtained from a single-frame transient sampling image in an image generation mode, so that the measurement precision is effectively improved, and the balance between the measurement efficiency and the measurement precision is realized.

The invention discloses an ultrafast ellipsometer and a measuring method. The ultrafast ellipsometer comprises a chirped pulse generation unit used for generating picosecond-order chirped pulse, a pump light path unit, a probe light path unit and a reflected light path unit, wherein the chirped pulse is divided into pump light and probe light after passing through an unpolarized spectroscope, the pump light carries out pump impact on a sample via the pump light path unit, the probe light is obliquely incident on the surface of the sample via the probe light path unit, and reflected light obtained after reflection of the probe light by the surface of the sample is divided into light P and light S. The light P and the light S are allowed to undergo interference so as to produce a frequency domain interferogram; changes of the polarization states of polarized light, including amplitude ratio and phase difference, are calculated according to the frequency domain interferogram; and impact dynamic and optical parameters are obtained by subjecting theoretical expressions of the amplitude ratio and phase difference of the polarized light and measuring results to fitting. According to the invention, the impact dynamic characteristic and optical characteristics of a material are measured at the same time by using single-shot pulse, and the response characteristics of the material under the action of impact waves can be accurately described.