132 results about "Computer measurement" patented technology

The invention relates to a device and method for detecting the dynamic properties of a two-dimensional directional mirror. The device comprises a dynamic photoelectric autocollimator, a controller of the dynamic photoelectric autocollimator, a hollow rotary platform, a controller of the hollow rotary platform, a rotary target, an adjustment platform, a data acquiring and processing system and a computer measurement and control system. Under the guidance of the computer measurement and control system, a target simulation reflector on the rotary target is driven by the rotary platform to simulate an optical target in movement, the dynamic photoelectric autocollimator provides the rapid and high-precision angle miss distance for the two-dimensional directional mirror, the data acquiring and processing system feeds back and controls the two-dimensional directional mirror to track the target simulation movement in real time, and the computer measurement and control system processes the measurement data of the photoelectric autocollimator in real time to obtain the data reflecting the dynamic response properties of the two-dimensional directional mirror. The device and method provided by the invention can be used for detection of properties of the two-dimensional directional mirror, such as axis shaking, step response, dynamic continuous tracking and the like.

A method and apparatus for rapid and selective heating of materials using variable frequency RF and microwaves. The apparatus uses variable frequency solid state electronics as a microwave power source, a novel microwave heating head to couple microwave energy to the target materials and a match-up network to tune the frequency and impedance match between the microwave source and the load. An electronic and computer measurement and control system is employed to monitor and control the microwave heating process. The method teaches the use of inductive microwave coupling for thin conductive materials such as metal film and impurity doped silicon wafers. The method also teaches the use of capacitive microwave coupling for dielectric material such as glass and ceramics. The method further teaches the use of rapid and selective heating of heterostructure for bonding and sealing of mems and integrated circuits. The method and apparatus can provide ultra-high heating speed along with ultra-high heating temperatures for rapid thermal processing of semiconductors and other materials. It also allows the use of bonding materials with high melting temperature for strong bonding and sealing of mems and IC devices. The apparatus further provides for high interconnection density of integrated circuits as connections are made without the use of solder bumps.

The invention discloses a networked distribution type multiple-mobile-robot system which comprises an upper computer measurement and control system and a multiple-mobile-robot set. The upper computer measurement and control system comprises an upper computer monitoring unit and a communication network unit. Mobile robots make decisions according to sensor information obtained by a sensor detection unit and network information received by the mobile robots, operation conditions of the mobile robots are controlled, and the mobile robots operate in a coordinated mode according to a coordination algorithm of the multiple-mobile-robot set. Compared with the prior art, the networked distribution type multiple-mobile-robot system has the advantages of being simple in structure, strong in function, convenient to develop and the like. Multiple sensors replace a visual processing method, so that data processing complexity is lowered; a ZigBee wireless network based on CC2530 is constructed so that a topological structure of the multiple-mobile-robot set can be conveniently changed, and a good experiment platform is provided for studies such as coordination, fault tolerance and self healing.

The invention belongs to the technical field of computer measurement, and particularly relates to a rapid phase unwrapping method based on quality diagram region segmentation. The rapid phase unwrapping method includes the steps of capturing wrapped phase diagrams obtained through processing with a camera, calculating quality diagrams according to the wrapped phase diagrams, filtering the quality diagrams with a phase differential-difference algorithm, automatically obtaining a region segmentation threshold value, dividing the wrapped phase diagrams into regions with different priorities with the obtained region segmentation threshold value, completing region phase unwrapping with a simple path tracking phase unwrapping algorithm, conducting phase unwrapping, and combining sets after phase unwrapping according to the priority sequence from high to low. By means of the rapid phase unwrapping method, the simple path tracking phase unwrapping algorithm based on region segmentation is adopted, and the phase unwrapping speed can be quickened on the premise that the phase unwrapping accuracy is not reduced to the greatest extent. By means of the rapid phase unwrapping method, the requirements for high accuracy, rapid unwrapping, noise jamming resistance and the like of structured light vision three-dimensional measurement are met.

The present invention discloses an electric power steering controller hardware function test board. The electric power steering controller hardware function test board comprises an upper computer and a simulation signal generation module. A controller to be tested is configured to burn in base hardware function test software; the upper computer is provided with upper computer measurement and control software; the upper computer is configured to send test instructions and simulation parameters to the controller to be tested and receive the test results fed back by the controller to be tested; the upper computer is configured to send the simulation parameters to the simulation signal generation module; the simulation signal generation module is configured to generate simulation signals according to the simulation parameters and instructions sent by the upper computer and output the simulation signals to the controller to be tested; the base hardware function test software of the controller to be tested is configured to control the operation of the controller to be tested according to the test instructions and the simulation parameters, collect the electrical function data of each hardware of the controller to be tested and feed back to the upper computer. The electric power steering controller hardware function test board is able to perform individual test of electrical parameters of the hardware module circuit of the electric power steering controller.

The invention provides a real time load calculation method considering thermal inertia of a building and a solar radiation effect. The method comprises that an outdoor comprehensive temperature simplified calculation model considering the solar radiation effect and absorption characteristics of the building for solar radiation is put forward, an outdoor comprehensive equivalent temperature simplified calculation model considering the thermal inertia of the building, that is, considering that the effect of an outdoor temperature on the interior of a room has attenuation and delay, and finally a real time heating load calculation model comprehensively considering the thermal inertia of the building and the solar radiation effect is finally put forward. By adopting the method provided by the invention, computer measurement and control is easy to realize, two-network water supplying and returning temperatures can be accurately and reliably determined through verification of application, oversupply or supply lack is avoided, and better energy-saving and emission reduction benefits are realized.

The invention relates to a power distribution truth value simulation test method and a power distribution truth value simulation test device. The power distribution truth value simulation test device comprises a voltage regulator, a boosting transformer, a switch, a series reactor, a ground capacitor, a computer measurement and control analysis unit, a power distribution network ground fault unit dG, a power distribution network phase fault unit xG, a power distribution product test unit SP and the like. The voltage regulator and the boosting transformer are used for boosting to a nominal voltage of a power distribution network, an operation mode and parameters of a simulation power distribution network are changed and excited to generate an overvoltage for experimental study on production mechanisms and protective measures of overvoltage in the power distribution network; by means of the power distribution network ground fault unit dG and the power distribution network phase fault unit xG, experimental study on fault mechanisms, fault processes, fault recovery and fault treatment measures of the power distribution network can be realized; by employing of the power distribution product test unit SP, dynamic tests and fault tests of the tested network are simulated according to power distribution truth values, and correctness of technical parameters and relevant functional parameters of power distribution products is analyzed by the computer measurement and control analysis unit.

The invention discloses an on-line data measuring method for a regular polygon measured object based on machine vision, which is characterized in that the method comprises the following steps: (1) a computer measurement control module is set and connected with a field measurement module which comprises an electronic image pickup device, a regular polygon central reflector prism, a plurality of diagonal reflectors and backlights; (2) the regular polygon measured object is arranged between the regular polygon central reflector prism and each backlight; after the backlight is lightened, each diagonal reflector reflects the projection to the camera area of a camera head lens by the central reflector prism; (3) the camera head lens simultaneously collects and images projection optical signals, converts the projection optical signals into electrical signals or data which is transported to the computer measurement control module; (4) the computer measurement control module obtains the data results obtained by measuring the measured object by operation. The invention also discloses a system for realizing the method.

The invention discloses a four-axis blade measurement system and method. The four-axis blade measurement system comprises a four-axis computer numerical control (CNC) platform, a laser sensor, computer measurement software and a motion control card; the laser sensor is mounted on a Y-axis moving guide rail of the four-axis CNC platform through a fixture, and the relative position requirements between a measuring head and a blade profile are met through linear motions of X, Y and Z axes; a blade is mounted on a rotating table C axis of the four-axis CNC platform through a chuck, and the rotation motion of the rotating table C axis keeps a relative angle to a laser beam; according to a planned measurement path and measurement strategies, the profile data of the blade is obtained through position information fed back by a grating sensor and a saser sensor, coordinate system transformation and an MATLAB fitting algorithm. The four-axis blade measurement system and method disclosed by the invention can improve the blade measurement accuracy, have the advantages of being simple to operate and high in measurement efficiency, can be used for solving the technical difficulty of quick measurement on the blade and promote the production and the continuous development of a special blade measuring device.

The invention discloses a high-pressure oil, gas, water and solid four-phase separating and metering device for a wellhead of a skid-mounted oil and gas field. The high-pressure oil, gas, water and solid four-phase separating and metering device consists of a high-pressure gas separating module and a low-pressure gas, oil, water and solid separating module. The pressure of the mixture of natural gas, oil, water and solid particles which are discharged from a natural gas wellhead is lower than 70 MPa, and the mixture of which the pressure is not reduced can directly enter the device; as throttling depressurization does not exist in a separating process, the temperature cannot be reduced, media do not need to be heated, devices such as a water jacket heater and a throttle manifold are omitted, and the cost and space of the device are greatly reduced; an operator can know and control running conditions of the device at any time through a computer measurement and control center; the power supply of all meter automatic control systems of the device is 500 W only, power consumption of the device is lower than that of the original device by 100 KW every day, and the cost is reduced to a maximum extent; and if a natural gas pipeline network is not laid during production estimation of a new well, the pressure of a natural gas outlet can be regulated to 25-35 MPa, then natural gas can be directly charged into a high-pressure compressed natural gas truck and carried away to be recycled to the natural gas pipeline network or a gas station, energy is recycled in time, gas emission is reduced, and waste of the original pilot torch is avoided.

A computer aided measuring and controlling system for compression casting is composed of compression casting machine, pressure sensor, displacement sensors, switching element, action executor, optically isolated multi-channel input board, multi-channel relay output board, digital I/O board, DC power supply for said sensors, analog signal connecting terminal board, analog I/O board and industrial control computer. It has three working modes: regulation, manual and automatic.

The present invention relates to a complete vehicle size non-contacting quick detection system. It includes vehicle body length measuring device formed from three camerae placed on the longitudinal horizontal guideway frame and displacement sensor for feeding back displacement of camera, vehicle body width measuring device formed from camera placed on the transverse horizontal guideway frame and displacement sensor for feeding back displacement of camera, vehicle body height measuring device formed from camera placed on the vertical guideway frame and displacement sensor for feeding back camera displacement and computer measurement control system for connecting all the camerae and sensors.

The invention discloses an FPGA-based orthogonal signal real-time high-precision processing method. The FPGA-based orthogonal signal real-time processing method adopts an orthogonal signal processing board constructed based on an FPGA, and computer measurement software. The orthogonal signal processing board and the computer measurement software realize processed data communication between upper and lower computers by means of USB data lines. The orthogonal signal processing board mainly realizes acquisition, differential preprocessing, mean filtering, error compensation, real-time phase calculation, as well as phase subdivision and direction judgment of orthogonal signals. The computer measurement software screens orthogonal signal sampled data input by the lower computer, then calculates a signal error compensation parameter through matrix operation, controls an orthogonal signal compensation program of the lower computer to operate, displays a correction effect and a measurement result on a measurement software display interface in real time, and stores relevant data. The FPGA-based orthogonal signal real-time processing method realizes the effect of compensating for orthogonal errors, amplitude fluctuations and DC drift errors of signals of a gate type sensor and a laser interferometer in real time, and provides an engineering solution for high-precision grating signal analysis and error real-time compensation.

The invention provides a large geotechnical triaxial creep test system, comprising a host computer, a triaxial pressure chamber, an axial weight loading device, an axial-pressure servo loading cylinder, an axial-pressure hydraulic source, a peripheral weight loading device, a peripheral-pressure servo loading cylinder, a peripheral-pressure hydraulic source, a vapor system and a computer measurement and control system, wherein an axial loading cylinder and a peripheral loading cylinder are arranged on the host computer; an axial-pressure displacement sensor is arranged on the axial loading cylinder; a peripheral-pressure displacement sensor is arranged on the peripheral loading cylinder; a first load sensor and a second load sensor are arranged below the axial loading cylinder; the triaxial pressure chamber is arranged inside the host computer and connected with the second load sensor; an axial-pressure servo motor is arranged on the axial-pressure servo loading cylinder; and a peripheral-pressure servo motor is arranged on the peripheral-pressure servo loading cylinder. By adopting the large geotechnical triaxial creep test system with the structure, long-term keeping of constant pressure is ensured; noise pollution is reduced; and meanwhile, the reliability is improved.

The invention discloses a method for predicting the vermicularity of hypereutectic vermicular graphite cast iron. The state of a material is tested through using a thermal analysis technology to testthe material, a computer measurement and control system is used to record the change of the temperature of molten iron of the hypereutectic vermicular graphite cast iron with time and draw a cooling curve, the cooling curve undergoes differential treatment to obtain a differential curve, and further computing is performed to obtain the vermicularity of the molten iron, and the vermicularity of themolten iron is used to predicate the vermicularizing effect of the molten iron. A defect that the vermicularity of the hypereutectic vermicular graphite cast iron cannot be predicated in the prior art is overcome.

The eddy-current brake experiment equipment for high-speed track traffic system includes base seat, rotary track, electromagnetic equipment, field power supply, vehicle power supply simulator, computer measurement and control device and driving device. When the rotary track is rotated at high speed, by means of action of field power supply the multipoint distributed measuring sensor can be used for detecting the action state of eddy-current brake and electromagnetic attraction so as to obtain the working state of eddy-current brake.

The invention discloses a vacuum-thrust-vector measurement system capable of adjusting the rocket-motor swinging direction in real time. The vacuum-thrust-vector measurement system comprises a rocket-motor installing platform, six one-direction force measurement and movement control assemblies, a base, a measurement and control cable and a computer measurement and control system. The one-direction force measurement and movement control assemblies are composed of lower hinging boxes, lower spherical hinges, servo motors, cylinders, lead-screw ejector rod mechanisms, force measurement sensors, upper spherical hinges and upper hinging boxes. The lead-screw ejector rod mechanisms are composed of lead screws and ejector rods. The servo motors are controlled by the computer measurement and control system to rotate, and rotating movement of the servo motors is converted into linear movement of the ejector rods through the lead screws to further drive the rocket-motor installing platform to move. One-direction force measured by the six force measurement sensors is synthesized through the computer measurement and control system to obtain the thrust vector of a rocket motor. The servo motors are vacuum motors, the force measurement sensors are of open structures, and swinging control and thrust-vector measurement can be carried out in a vacuum.

The invention relates to a device for testing thermal balance of a gas cooker, solves the problem of measurement of energy loss in novel cooker design, and provides support for improving cooker design and reducing energy loss. According to the device, based on a combustion principle, by measurement of hot water temperature, smoke component analysis, radiation intensity and temperatures of upper and lower ends of a furnace end, effective heat absorption energy, smoke loss energy, radiation loss energy, and heat conduction loss energy are estimated. By measuring gas flow, total energy of gas consumption is estimated. Thus a main energy consumption proportion of a tested cooker can be obtained, thereby providing test data support for further improving cooker design. The device for testing thermal balance of the gas cooker in the invention adopts computer measurement and control technology, and achieves the effect of automatically realizing signal acquisition, data processing and data management functions. And automated testing of cooker energy conversion and distribution is realized.

A method for characterizing subsurface formations penetrated by a wellbore includes accepting as input to a computer measurements of a physical parameter of the formations made over a selected axial interval of the wellbore. At least one attribute of the measurements is determined from a change in the measurements over the selected axial interval. At least one characteristic of the formations in the selected axial interval using the at least one attribute.

The invention relates to the technical field of a detection method, and discloses a high performance liquid chromatography method for measuring content of carnosine and anserine in a fish head. The high performance liquid chromatography method comprises the following steps of: taking soft tissues of the fish head, after mashing the soft tissues, adding extracting solution into the mashed soft tissues as a test sample, and carrying out heating extraction to obtain crude extract; after cooling the crude extract to the room temperature and carrying out refrigerated centrifugation, taking supernate and filtering the supernate with a millipore filter membrane; measuring the content of the carnosine and the anserine in the filtrate by high performance liquid chromatography, wherein mesoporous modified Al-SBA-15 loaded with copper ions is used as a filler in a chromatographic column of high performance liquid chromatography. According to the invention, the mesoporous modified Al-SBA-15 loadedwith the copper ions is used as the filler in the chromatographic column in high performance liquid chromatography analysis; the high performance liquid chromatography method has good absorption andseparation effects on the carnosine and the anserine, is high in detection accuracy and sensitivity and simple and convenient to operate; computer measurement can be carried out only by simple preprocessing without a fussy preprocessing step; meanwhile, deviations of a peak area and retention time are very small; and the high performance liquid chromatography method has very high accuracy.

The invention discloses a plate waveform scanning device for a plate heat exchanger, which is composed of a measurement gantry bracket, a plate fixing mechanism, a ball screw linear walking mechanism, a biaxial servo synchronization system, laser scanning sensors and an Advantech ARK-3440 computer measurement and control system, wherein each laser scanning sensor is installed on a sliding block of the ball screw linear walking mechanism, so that the two laser scanning sensor at both sides of a plate are controlled by the servo system so as to move synchronously, thereby being capable of measuring parameters such as the waveform, the plate thickness and the like at the obverse side and the reverse side of the plate at any positions. The plate waveform scanning device disclosed by the invention is convenient and quick in test, high in detection work efficiency and high in measurement precision, improves the work efficiency of quality detection, strengthens inspection means, and is particularly obvious in efficiency improving for large plates. In addition, the plate waveform scanning device solves a problem of thickness reduction which cannot be directly measured before.