102results about How to "Timely measurement" patented technology

The invention discloses a method for measuring the multimedia multicast service quality based on a client under a large-scale IPv6 network environment. The method provides a whole set of schemes to solve the multimedia multicast service quality measurement, comprising the time synchronization of a closed system, the message sampling and time stamp adding of a multicast source end system, the selection of a dynamic measurement point, the measurement of multicast service quality parameters of a single measurement point, and the assessment and control of a multicast control server to the access network multimedia multicast service quality. The method not only can overcome the invasion and non-reliability of active measurement as well as the locality of passive measurement, but also can timelyand truly measure the multimedia multicast service quality, and has the advantages of convenient deployment, good expansibility and the like.

The invention discloses a hybrid measurement based power distribution network dynamic state estimation method, which comprises the steps of reading current network parameters and a network topology structure of a power distribution network, and forming a node admittance matrix and a branch-node association matrix; reading SCADA data and PMU data of each node of the power distribution network, configuring a mapping relation between the two kinds of data, and processing differences between the two kinds of data; building a state transition equation and a measurement equation which are adapt to PMU/SCADA hybrid measurement; adding a fault-tolerant mechanism to a traditional extended Kalman filter method, and performing state estimation on the power distribution network by adopting the improved extended Kalman filter method. Dynamic state estimation is applied to hybrid measurement, and the accuracy of state estimation is improved. Meanwhile, an adaptive data detection mechanism is introduced, and the accuracy of dynamic state estimation is improved.

The invention discloses a method for testing the rapid solidification behavior and the solidification heat flow of a metal material. A vacuum pump and a deep deoxygenation device are used for regulating and controlling protective atmosphere, an induction coil is used for heating and melting a metal material sample, inert protective gas is introduced into a quartz glass tube through a pulse air pressure controller, a metal molten drop is injected to the upper surface of a water cooling copper mould, the change pattern of a metal molten drop solidification process is captured through a high-speed pick-up device on site in real time, meanwhile, a temperature data acquisition device is synchronously started, the temperatures of two thermocouples embedded in the upper vertical position and the lower vertical position of the center of the cooling copper mould are collected and stored, the work of the high-speed pick-up device and the temperature acquisition device can be stopped after the metal molten drop is completely solidified, and then, the analysis and conversion calculation of collected information can be carried out so as to obtain an image which reflects the solidification behavior of the metal material and the change rule of the heat flow in a solidification process. The method has the advantages of convenience and simpleness in operation, good stability, low test cost, high detection efficiency, visual and intuitive result, high accuracy, wide applicable range and the like.

The invention provides a thermal analysis and detection method and device for solidification grain size of a magnesium alloy melt and belongs to the fields of magnesium alloy melt treatment and casting solidification. The thermal analysis and detection method provided by the invention comprises that certain amounts of magnesium and magnesium alloy melt are poured into a sampling cup to be cooled, two thermocouples are adopted for respectively determining temperatures at the center and the edge of the melt in a solidification process in a magnesium alloy melt cooling process, a temperature acquisition device is used for acquiring temperature data, a computer program is used for recording variation of the temperatures at the center and the edge of the melt in the solidification process along with time, then dendritic crystal coherence point solid phase fractional number is determined by virtue of a thermal analysis and detection method, and the dendritic crystal coherence point solid phase fractional number is compared with a standard value to judge a refining or roughening effect on the grain size of a magnesium alloy by modification, grain refining or alloying element addition. According to the thermal analysis and detection method and device provided by the invention, recalescence is not required in a thermal analysis cooling curve of the solidification process, the thermal analysis and detection method and device provided by the invention are especially applicable to the magnesium alloy with lower solidification latent heat release, a modification effect can be represented within a wider solidification speed range, and solidification grain size can be predicted.

The invention relates to a measuring system which is used for ship steel plate bending deformation in the process of ship manufacturing, in particular to a ship steel plate dynamic three-dimensional measuring system based on projection and multi-view vision. Four synchronous high-resolution industrial cameras with 18 million pixels and a projector with 7000 lumens are arranged above a measured steel plate, the four industrial cameras and the projector are connected on an industrial personal computer through a universal serial bus (USB) data line, the industrial personal computer is responsible for collecting of image data and sends the image data to a server through a reticle, and the server conducts three-dimensional measuring. The ship steel plate dynamic three-dimensional measuring system is not contacted with the surface of a steel plate, and can automatically, timely, conveniently and precisely measure three-dimensional size of a ship steel plate.

The invention discloses a system and a method for estimating credit risks in extreme cases. The system comprises a source data acquisition device, a user input device, a credit risk pressure measurement device, a data storage device and a data output device, wherein the source data acquisition device is connected with the data storage device; the user input device, the credit risk pressure measurement device, the data storage device and the data output device are connected sequentially; and the credit risk pressure measurement device reads source data collected by the source data acquisition device from the data storage device, and conducts simulation and prediction processing on the source data and user input information input by the user input device so as to realize the estimation of the credit risks in the extreme cases. The system and the method overcome the problem that objective, accurate and efficient estimation cannot be realized since the quantification and the estimation of the credit risks in the extreme cases of a bank are mainly dependent on the experience of personnel, and greatly improve the accuracy and safety of the data.

The invention discloses a micro-inductance sensor used for detecting metal fragments in oil liquid, which belongs to the application field of sensors. The micro-inductance sensor comprises a tee pipe joint, a piston, a micro-coil, a PCB (printed circuit board), a welding lead, a bonding lead and an insulating layer. The micro-inductance sensor has the characteristics that: (1) the online detection of the metal fragments in the oil liquid can be realized; (2) the metal fragments with small size can be measured by the micro-coil, such as the diameter of 20-120mum, forecast is given off in the early stage of wear failure of equipment so as to take maintenance and repair measures; (3) the ferromagnetism or non-ferromagnetism of the metal fragments can be judged, and more diagnostic messages can be provided for judging whether the wear part is a bearing or a gear; and (4) the array measurement of the oil liquid can be realized, and the amount of oil sample measurement is increased.

A test subject, which is filled with test gas, is placed in a testing chamber, which can be evacuated. A carrier gas is conducted into the testing chamber, so that a gas mixture made of carrier gas and test gas forms therein. The gas mixture is suctioned out of the testing chamber by a compressor pump. A testing gas sensor is connected to the outlet of the compressor pump. The test gas is contained in the compressed gas mixture at a partial pressure which is increased by the compression ratio. In this manner, the sensitivity of the test gas recognition is increased and/or the time constant of the measurement is shortened.

The invention relates to a pipe jacking project automatic measurement system and a method thereof. The pipe jacking project automatic measurement system comprises auxiliary observation stations established at the turning positions in the pipe jacking construction. Each auxiliary observation station consists of an automatic leveled base and a measurement robot total station. A data terminal of each measurement robot total station is connected with a data port of a computer by a shielded cable. Measurement data is processed by the computer. Each total station is sequentially controlled by the computer to orderly carry out transfer measurement. According to the invention, measurement robots are adopted to be connected with the programmed computer and the computer commands each measurement robot to carry out automatic tracking measurement according to a program. The system and the method thereof can be used for conveniently and timely measuring actual coordinate values of a tool head in various curve pipe jacking projects.

The invention relates to a technique for measuring ship steel plate bending deformation in the ship manufacture process, in particular to a ship steel plate dynamic three-dimension measurement method based on multi-camera vision. The method is that four synchronous high-resolution industrial cameras with resolution ratio above 1440*1080 and frame rate as 10fps are fixed on a measuring frame of a ship steel plate bending automated control system, images shot by the four industrial cameras are transmitted to a high-performance computer capable of performing storing and analyzing through a 1394 line and a 1394 card, and ship steel plate dynamic three-dimension measured data analysis including steps of dynamic three-dimension measurement and algorithm is conducted. By aid of the ship steel plate dynamic three-dimension measurement method, the steel plate surface is not contacted, and dynamic three dimensions of a ship steel plate can be measured automatically, timely, conveniently and accurately.

The invention discloses a method for detecting and compensating a floor-type boring and milling machine space position by using a two-frequency laser measurement system, and belongs to the field of numerical control machines. In the method, a fixed datum plane is established on a tip of a horizontal lathe guide rail of the numerical control floor-type boring and milling machine, a laser generator of a double-frequency laser interference measurement system which is provided with a computer is fixed on the datum plane, a laser beam emitted by the laser generator is controlled to be higher than the plane of the lathe guide rail, a lower sliding seat of the lathe is provided with a vertical conversion lens, the laser beam emitted by a double-frequency laser generator is conversed by the conversion lens into a vertically upward laser beam, and an interference target lens is arranged on a ram seat of the lathe; and the position of the central point of a boring bar is taken as the first positioning point when an upright column of the lathe and the ram seat are at certain positions, the points of new positions of the upright column of the lathe and the ram seat after movement are taken as second and third positioning points, the laser beam emitted by the double-frequency laser generator is utilized to measure an error due to lathe precision and foundation variation, and the error is compensated by a numerical control system of the lathe, so that the machining precision of the numerical control floor-type boring and milling machine is improved.

The invention discloses a portable blood oxygen measuring system. The portable blood oxygen measuring system is characterized by comprising a sensor module for detecting signals from the surface skin of a human body and a master control module electrically connected with the sensor module and used for processing the measurement signals of the sensor module to obtain physiological information of a detector, wherein a battery is connected to the master control module, the sensor module, the master control module and the battery are integrally arranged on a housing worn on the finger or wrist. The portable blood oxygen measuring system makes activities of a wearer not limited at the finger or wrist of the human body without accessories for heart rate and blood oxygen saturation degree measurement, the wearer can perform daily continuous monitoring in a static or dynamic state, and the portable blood oxygen measuring system is more convenient to use and can provide continuous and reliable data recording and analysis results for a user or a medical worker and provide an effective basis for follow-up diagnosis and give treatment.

The invention discloses a device of measuring formation resistivity of a drill. The device comprises a tool housing; an emitter disposed on the tool housing and used for generating electric signals and converting the electric signals into electromagnetic signals to be emitted to a formation; a receiver arranged on the tool housing, positioned at an axial place of the emitter and used for measuring amplitude and phase of the electromagnetic signals from the emitter; and an emission signal coupler coupled to the emitter and used for coupling part of electric signals of an antenna of the emitter and measuring amplitude and phase of the coupled electric signals. An amplitude and phase difference between the electromagnetic signals received by the receiver and the electric signals coupled by the emission signal coupler is utilized to calculate resistivity. The device of the invention helps to solve problems of measurement lag caused by a distance between a drill and a conventional propagation logging tool. The device is improved to be more practical.

The invention relates to a thermal power plant flue gas denitration technology, in particular to a urea catalytic hydrolysis reactor for flue gas denitration and a method. The system comprises a kettle body and a coil pipe cluster fixedly arranged in the kettle body through a plug; a urea solution inlet is formed in the bottom of the kettle body, and an ammonia outlet is formed in the top of the kettle body; a saturated steam inlet and a drain outlet are respectively formed in the outer side of the plug; the coil pipe cluster comprises a plurality of coil pipes inserted into the kettle body; the end part of the coil pipe is fixed with the inner side of the plug, the outer surface of the coil pipe is coated with a catalyst coating, the inlet end of the coil pipe is communicated with the saturated steam inlet, the outlet end of the coil pipe is communicated with the drain outlet, and the coil pipe is a U-shaped pipe made of a 316L stainless steel material; a partition plate is arranged on the bottom surface in the kettle body; the coil pipe cluster is arranged at one side of the partition plate, and the bottom surface of the kettle body on the other side is provided with a drain outlet. The reactor has the advantages of economy, feasibility, simple structure, convenience in catalyst supplement and long service life.

The invention relates to a multifunctional mobile wireless remote transmission controller, comprising a portable controller shell, wherein a singlechip is arranged in the controller shell, the singlechip is respectively connected with a human body induction module, a temperature and humidity measurement module, a VOC (volatile organic compounds) sensor module, a wireless communication module, a display screen, an input circuit and a power supply, and the wireless communication module is connected with an upper computer in a wireless manner. The multifunctional mobile wireless remote transmission controller has the beneficial effects that the concentration, temperature and humidity of VOC can be accurately and timely measured and uploaded; the controller can be started in time under human body induction; a lithium battery is adopted to supply power, the controller can be flexibly moved and used, and measuring points can be set optionally; the components are suitable for long-term sleep, and can be started intermittently or started under human body induction, the power consumption is low, the radiation is low, and the energy saving effect is remarkable.

The invention discloses a portable grain status detector. The portable grain status detector consists of a hand-held liquid crystal display and a wireless detection rod, and is characterized in that: the hand-held liquid crystal display consists of a sensing receiver battery and a shell; a function key area, a selection key area, a switch key and a return function key are arranged on the outer front surface of the hand-held liquid crystal display; the wireless detection rod mainly comprises an emitter, a storage battery, a sensor, a micro camera, a data wire and a sensing probe; the temperatures and the moisture of grains are sensed to the sensor through the sensing probe, the sensor is used for transmitting the temperatures and the moisture to the emitter through the data wire, and the emitter is used for emitting the temperatures and the moisture to the hand-held liquid crystal display; and a high-transmission prism is arranged on the micro camera, and the shading values of light rays can be adjusted according to the environment, so that the optimal display effect is achieved. The detector replaces the conventional equipment and method for detecting grain statuses such as the temperatures, the moisture and the like, the grain status in a grain bin can be measured in time, and the effects of quickness and convenience are achieved.

The invention discloses a roller press roller surface abrasion detection method and device based on machine vision. The roller press roller surface abrasion detection method and device are used for detecting the roller press roller surface abrasion situation on line. According to the detection method and device, the high-resolution camera is used for collecting roller surface image data, and the roller surface image data is transmitted into the analysis computer through the video collection card. Machine vision analysis software based on a deep learning algorithm is installed in the analysis computer, model training is carried out through previously collected roller surface image data of the abraded roller press and the unabraded roller press, and an analysis model is continuously optimized. After roller surface data collected on site is input into the model, roller surface abrasion area and abrasion condition data are output through multiple times of iterative processing. The problemthat roller surface abrasion measurement of the roller press is not found in time is solved, roller surface images are collected and analyzed in time by applying a deep learning algorithm and fusing amachine vision technology, and the method has positive significance in daily production, operation and maintenance of the roller press.

The invention relates to an inductive temperature measuring device which is characterized in that the inductive temperature measuring device comprises an electromagnetic device capable of generating an electromagnetic signal and a control unit which is connected to the electromagnetic device and can detect electrical parameters in the electromagnetic device. The electromagnetic device comprises amagnetic core and an electromagnetic coil, the magnetic core includes a magnetic core middle pillar, the electromagnetic coil is arranged at the periphery of the magnetic core, the electromagnetic device can generate an electromagnetic signal after being energized, and the inductive temperature measuring device further comprises a temperature sensing layer capable of sensing the electromagnetic signal generated by the electromagnetic device. According to the inductive temperature measuring device, a traditional temperature measuring method is changed, the temperature of a temperature sensing layer is detected by the action of the electromagnetic signal, according to the detection method of the invention, the heat transfer between a tested object and the electromagnetic device is not needed, the temperature of the tested object can be directly tested without the loss of heat and without a heat transfer process, and the temperature measurement is more timely and more accurate.

The invention discloses a silicon carbide high temperature vibration sensor with high sensitivity, high frequency response, and anti-overload. The silicon carbide high temperature vibration sensor comprises a silicon carbide chip, a silicon carbide bonding sheet, an insulation layer, a packaging shell, and a kovar pin; the silicon carbide chip comprises a supporting sheet body, a cantilever beam,and a mass block; the supporting sheet body and the silicon carbide bonding sheet form a bonding body; the mass block and the cantilever beam are arranged insidea cavity of the bondingbody, and the cantilever beam is provided with a chip circuit; and the kovar pin extends into a bonding material along through holes arranged on the package shell, the insulation layer and the silicon carbide bondingsheet, and is connected with the chip circuit. The high temperature vibration sensorhas the characteristics of high sensitivity, high frequency response and anti-overload, and the accurate and timelymeasurement of vibration signals in the high temperature environment can be realized.

The invention discloses a measuring device of the friction coefficient of a papilionaceous optical cable. The measuring device comprises a friction coefficient test bed, an electronic universal testing machine, a computer terminal and an electronic scale. The friction coefficient test bed comprises a base with a height adjusting knob, a cover plate and a bottom plate which are horizontally parallel and are placed in the vertical direction are arranged above the base, a tension arm and a pulley support with a fixed pulley are arranged on the electronic universal testing machine, and a clamp is mounted at the tail end of the tension arm. A measuring method comprises the steps that small tested optical cable segments equal in length are cut out, and are densely arranged and pasted on strong double sticky tapes on the cover plate and the bottom plate, the bottom plate and the lower edge of the fixed pulley are made to be horizontal, a large tested optical cable segment is taken and fixed, and a switch of the electronic universal testing machine is turned on to start testing. According to the measuring device, manual operation can be simplified, testing efficiency can be improved, and friction coefficient data at the initial stage of production or experiments can be measured and found in time, so that raw material waste of subsequent production can be reduced; besides, human and equipment errors are reduced to the maximum extent, and the accuracy and reliability of the product testing result are effectively guaranteed.

The invention discloses a medium-frequency heat treatment system and heat treatment process for petroleum tool irregular materials. The heat treatment system comprises a medium-frequency heater, a discharge rack, a feed rack, a sprayer and a circulating air cooler, wherein the discharge rack and the feed rack are respectively arranged at the left end and the right end of the medium-frequency heater; the sprayer is arranged above the middle part of the medium-frequency heater; and the circulating air cooler cooperates with the sprayer for use. The heat treatment process comprises the following steps: (1) cleaning the petroleum tool irregular materials; (2) heating the petroleum tool irregular materials, soaking, and water-cooling and air-cooling at the same time; (3) heating the petroleum tool irregular materials, soaking, and air-cooling; and (4) inspecting before warehousing. The invention has the advantages of simple process steps, favorable process parameters, reasonable system structure, high heat treatment efficiency and simple control operation. The invention can effectively avoid the phenomena of cracking and laminating at the end of the petroleum tool irregular material, prevent cooling water from entering the inner bores and ensure that the inside and the outside thereof are uniformly heated. The whole treatment process does not have oxidation or decarbonization, thereby having no pollution.