31results about How to "Fast online monitoring" patented technology

The invention belongs to the field of scientific testing methods and instruments and particularly relates to an isothermal differential analysis method and an isothermal differential analyzer of gas-solid reactions. The isothermal differential analysis method of gas-solid reactions comprises the following steps: feeding fine particle reactants to a fluidized bed through a transient pulse sampling system, and online monitoring concentration and flow rate through a transient pulse gas conveying sample and a gas product of the fine particle reactants to quickly heat the reaction materials and realize isothermal differential under isothermal conditions. According to the method, approximate plug flow of gas and approximate complete mixing flow of particles in a miniature reactor can be realized to reinforce the heat and mass transfer efficiency and realize the isothermal differential of the reaction, so that the reaction test is closer to the intrinsic characteristics of the chemical reaction.

The invention provides an online power monitoring device for a high-power all-fiber laser device and a packaging method thereof. Low-refractive-index coating glue is applied to a welding point between each output level of the all-fiber laser device and the next output level of the all-fiber laser device, so that the optical fiber welding points are reinforced, a metal clamp to which a photoelectric detector is fixed and the corresponding welding point are packaged together, the online power monitoring device is attached to a laser device cooling heat sink, and heat generated by the welding point and a photoelectric detector is carried away through heat conduction between the metal clamp and the heat sink. In this way, optical fibers can not be damaged, and the whole all-fiber laser device can not be damaged; furthermore, the photoelectric detector is high in response speed, so that quick online monitoring of the power of the laser device can be achieved in real time; due to the fact that closed-loop control is achieved between the online power monitoring device and a power supply of a laser device system, the laser device system can be effectively protected, and a measured power value is high in accuracy.

The invention discloses an ultrasonic monitoring device and method for nano-particle aggregation in a non-Newtonian base-liquid fluid. The ultrasonic monitoring device comprises a sample cell and a straight ultrasonic probe, wherein a fluid transportation groove used for placing a nanometer solution is formed in the sample cell, a reflecting plate is arranged in the fluid transportation groove, the straight ultrasonic probe is used for emitting ultrasonic pulses to the reflecting plate in the fluid transportation groove and receiving reflected waves reflected by the reflecting plate, the straight ultrasonic probe is connected to a data acquisition and processing system through an ultrasonic pulse transmitting and receiving device, and the reflected waves are sent to the data acquisition and processing system through the ultrasonic pulse transmitting and receiving device to carry out data processing. By adopting the method, characteristic parameters of average radiuses of particle clusters in the nanometer solution and displacements of the particle clusters in unit time can be obtained, fractal dimensions of a random walk approach in a fractal structure of the nanometer solution and the weights of particles with different particle diameters in all nano-particles are monitored in real time, so that sound attenuation coefficients of particle phases in a solid-liquid two-phase flow are accurately measured to realize fast on-line monitoring.

The on-line monitor method to the conductivity in beer fermentation process comprises, using the relation between conductivity and reducing sugar, alpha-amino nitrogen or alcohol degree to build opposite mathematic model; checking the real process and standard curve to realize detection to other parameters indirectly and monitor fermentation process. This method is rapid, synchronous and precise.

The invention discloses an intelligent recognition, counting, and detection algorithm for a quasi-circle object facing a packaging industry. According to images collected by an industrial camera, effective regions where quasi-circle objects are located are obtained. An image pretreatment method includes: removing original image noises by using a median filtering algorithm and obtaining binary images after image denoising by using an adaptive local binary algorithm. Geometric feature extraction is carried out by detection for four times; to be specific, quasi-circle objects with normal areas after binaryzation are detected for first detection; the rest of quasi-circle objects with defects are detected after first detection during the second detection process; quasi-circle objects at an uneven region are detected during the third detection process; and quasi-circle objects may existing at a detection boundary are detected during the fourth detection process. Therefore, the counting accuracy of quasi-circle three-dimensional objects is improved; and the packaging requirement is low and the detection robustness is high. Meanwhile, real-time, rapid, on-line monitoring can be realized. The algorithm is applied to detection of various quasi-circle objects.

The invention discloses a measuring method and online monitoring system for the reactive current compensation rate of a generator set. Traditional measurement methods may interfere with the normal operation of the generator set, have a certain test risk, is incapable of achieving nonintrusive undisturbed measurement, and cannot be used for continuously online monitoring the reactive current compensation rate of the generator set. The measuring method of the invention comprises steps of: monitoring the grid-connected running state of the generator set, and determining whether the generator setis in a undisturbed stable operation state; measuring the electric quantity and the control variable of the generator set at the same stable operation time; calculating the per-unit values of the electrical quantity and the control variable of the generator set by using the nominal parameters and the reference value of the generator set; calculating the excitation control open-loop steady-state gain according to the open-loop transfer function of the generator set excitation control system; and calculating the reactive current compensation rate of the generator set according to a reactive current compensation rate calculation formula. The method realizes the nonintrusive undisturbed measurement of the reactive current compensation rate of the generator set, and provides a solution for thefast check of the reactive current compensation coefficient of the generator set and the online monitoring of the reactive current compensation rate.

The invention relates to a method for controlling quality of Shenbao mixture percolating fluid, and particularly relates to a method for fast measuring the specific gravity of the Shenbao mixture percolating fluid and the content of icariin. The method comprises the following steps: step 1, measuring the near infrared spectrum and specific gravity of the percolating liquid and a standard graph and data of icariin content during the process of qualified Shenbao mixture preparation; step 2, respectively establishing corresponding models among between the percolating liquid near infrared spectrum, the specific gravity and the concentration of the icariin by using chemometrics software; step 3, measuring the near infrared spectrum of the percolating liquid to be measured during the process of Shenbao mixture preparation; and step 4, respectively obtaining the specific gravity of the percolating fluid sample to be measured and the concentration of the icariin in the Shenbao mixture preparation by utilizing the corresponding models established in the step 2 via the chemometrics software.

The invention belongs to the field of food safety, environment monitoring and public safety, and particularly discloses a luminous bacterium flow injection method for quickly detecting and warning food-borne toxin pollution and application of the luminous bacterium flow injection method. The luminous bacterium flow injection method includes steps of resuscitating, inoculating and continuously cultivating vibrio qinghaiensis Q67 microbial agents; designing flow injection system programs; detecting sample solution by the aid of luminous bacterium flow injection processes; integrating and processing data and designing warning systems. The luminous bacterium flow injection method and the application have the advantages that the food-borne toxin pollution can be detected and warned by the aid of the created luminous bacterium flow injection method, the luminous bacterium flow injection method is high in analysis speed and automation degree, easy and convenient to implement and good in repeatability, and errors due to manual operation can be prevented; flow injection analysis processes are combined with luminous bacterium continuous cultivation, and accordingly the possibility of cross pollution is extremely low; vibrio qinghaiensis is used as an indicator for measuring pollution toxin and is wide in detection range and sensitive in reaction.

The invention discloses a laser cleaning control method and system based on LIBS technology online monitoring, and relates to the technical field of laser cleaning, the laser cleaning control system is researched and developed for achieving the laser cleaning control method, and the laser cleaning control system comprises a mainframe box, a laser cleaning system and an LIBS online monitoring system; the mainframe box is used for bearing the laser cleaning system and the LIBS online monitoring system, and the LIBS online monitoring system is used for collecting and monitoring plasma signals in the cleaning process of the laser cleaning system. According to the laser cleaning control method and system based on LIBS technology on-line monitoring, the dirt cleaning effect and cleaning efficiency of the surface of a cleaned target are greatly improved, on-line monitoring of the laser process is achieved, the laser cleaning process is more automatic, protection on a cleaned target base body is better improved, and the laser cleaning quality is improved. And the service life of the base body is further prolonged.

The invention discloses an automatic on-line monitor for measuring the water body COD. The monitor comprises an ultraviolet transparent electrolytic cell, wherein a reference electrode, a counter electrode and a working electrode made from a TiO2 nanometer material are arranged in the electrolytic cell, the reference electrode and the counter electrode are arranged on the same side of the working electrode in parallel, the reference electrode, the counter electrode and the working electrode are connected to a constant potential rectifier, a liquid inlet is formed in the upper end, located on one side of the working electrode, of the electrolytic cell, a high-power LED ultraviolet lamp is arranged on the outside of the electrolytic cell, and a liquid outlet is formed in the lower end, located on the other side of the working electrode, of the electrolytic cell. According to the automatic on-line monitor for measuring the water body COD, a high-power ultraviolet LED light source and an efficient heat dissipation structure, the nanometer TiO2 working electrode, a peristaltic pump and a miniature electromagnetic valve are adopted, so that light, rapid and automatic on-line monitoring is realized, the volume of test solution required for analysis each time is small, secondary pollution is not caused, and the monitor is suitable for site and on-line monitoring and can be used for laboratory analysis.

The invention relates to a rapid on-line electrochemical monitoring method of total phosphorus. The method includes the following steps: a peristaltic pump pumps a monitored water sample into an electrolyzer from a monitoring point, wherein the capacity of the electrolyzer tank is 10mL; .OH hydroxyl free radicals are generated by electrochemical electrodes to completely oxidize the water sample inthe electrolyzer, wherein the oxidizing time is 30min; a control system converts a resistance value fitted by electrochemical impedance spectroscopy into a total phosphorus value, and then converts an electrical signal to a digital signal, transmits the digital signal with the second generation (2G) or the third generation (3G) set by the system, and the digital signal is received and controlledby using a mobile phone or a network platform. Compared with a traditional online total phosphorus monitoring method, the detection time is short, the detection range is wide, the accuracy sensitivityis high, the equipment price is low, there is basically no maintenance cost, and signal conversion is convenient. The rapid on-line electrochemical monitoring method of total phosphorus completely overcomes problems of long inspection time, high equipment price and high maintenance cost and so on in existing online total phosphorus monitors and provides an urgently needed monitoring means and equipment for environmental monitoring and environmental protection in China.

The invention provides a method for rapidly judging the elution start point and terminal point during the macroporous resin absorption and separation process of salvianic acid A sodium and applications thereof, and relates to the technical field of quality detection in traditional Chinese medicine production. The method comprises following steps: at first, taking different batches of salvianic acid A sodium eluent obtained during the macroporous resin elution process as samples to construct a correction sample set; measuring the salvianic acid A sodium contents of each sample of the correctionsample set by a standard method; then collecting and processing the primary near infrared spectral data of each sample to obtain the characteristic spectral data of each sample; based on the characteristic spectral data and salvianic acid A sodium contents of each sample, establishing a correction model by a stoichiometric method; and finally adopting the correction model to predict the salvianicacid A sodium content of salvianic acid A sodium eluent so as to determine the elution start point and terminal point during the elution process. The provided method has the advantages of rapidness,simpleness, accuracy, reliability, and good repeatability.

The embodiment of the invention provides an online monitoring device for moisture content of transformer insulating oil. The online monitoring device comprises an oscillating frequency counter, an oilsample constant-temperature detection chamber and a crystal oscillator, wherein the crystal oscillator is covered with a hydrophilic coating on the surface, mounted in the oil sample constant-temperature detection chamber, and used for generating oscillating frequency and transmitting the oscillating frequency to the oscillating frequency counter; the oil sample constant-temperature detection chamber is internally provided with the crystal oscillator, and used for holding the transformer insulating oil; the oscillating frequency counter is connected with the crystal oscillator, and used for recording the oscillating frequency generated by the crystal oscillator and acquiring the moisture content of the transformer insulating oil according to the variation of the oscillating frequency generated by the crystal oscillator. The embodiment of the invention also provides an online monitoring method for moisture content of transformer insulating oil. The method is implemented by the device.By adopting the online monitoring device and method, the moisture content of the transformer insulating oil can be monitored quickly, conveniently and accurately on line.

The invention discloses a BP neural network-based livestock and poultry granular feed moisture measurement device. The device comprises an upper computer software system and a hardware system; the upper computer software system is arranged on a PC; the hardware system comprises a microcontroller, a cylindrical capacitor, a signal generation circuit, a signal conditioning circuit, a working power supply circuit, a temperature sensor circuit, a memory circuit, a key display circuit and a serial port communication circuit; the cylindrical capacitor is connected with the signal generation circuit;the signal generation circuit is connected with the signal conditioning circuit; the microcontroller is connected with the signal conditioning circuit, the working power supply circuit, the temperature sensor circuit, the memory circuit, the key display circuit and the serial port communication circuit; and the serial port communication circuit is connected with the PC. The device is low in cost,can measure the water content of granular feed within 58 seconds, is high in efficiency, and can realize rapid online monitoring.

The invention provides a 110KV total drop main transformer oil chromatography online monitoring and analyzing system, and relates to the field of transformer oil chromatography online monitoring. The 110KV total drop main transformer oil chromatography on-line monitoring and analyzing system comprises a transformer body device, an oil chromatography on-line monitoring device, a fluorescent optical fiber on-line temperature measuring device and a main control computer device, and the fluorescent optical fiber on-line temperature measuring device comprises an optical fiber temperature sensor and an optical fiber temperature controller. The oil chromatography on-line monitoring device comprises an analyzing module for gas dissolved in oil, an on-line monitoring module for micro-water content in oil and a chromatographic analyzing and diagnosis module. The oil chromatography on-line monitoring device can be used for monitoring fault gas dissolved in multi-component and full-component oil at the same time, can assist in realizing on-line analyzing of micro-water in oil, and can automatically realize the functions of data acquisition, chromatogram analyzing, fault diagnosis and the like; and the temperature and the variation trend of the transformer winding can be monitored on line in real time through the fluorescent optical fiber on-line temperature measuring device, and beforehand management and risk prediction are achieved.