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

The invention relates to an intrinsic safety opto-acoustic spectrum gas monitoring system based on an optical acoustic sensor. The Intrinsic safety opto-acoustic spectrum gas monitoring system comprises a light source device which is connected with a photoacoustic cell device through optical fibers and an optical fiber collimator, and the incident direction of laser emitted from the light source is collinearly aligned with the axle center of the photoacoustic cell device; and phase-shifting erbium-doped grating optical fiber with the 1 / 4 wavelength of the optical acoustic sensor is annularly paved on the inner wall of the photoacoustic cell device, the photoacoustic cell device is communicated with a gas to be tested, and the grating optical fiber is connected with a demodulation device and a data acquisition device. The invention has the advantages of high detection sensitivity, fast response speed, and the like and can realize fast, accurate and long-term on-line monitoring of tracetoxic and harmful gases or other specific gases, in particular to accurate measurement and analysis of gases under some special detection environments, such as the strong electromagnetic environment,the radioactive environment, the environment in a gas-production coal mine which is not allowed to use a power supply device on site, and the like.

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 ofShenbao 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 provides nano-polymer capsules embedded with an oxygen-sensitive fluorescent indicator and a preparation method thereof, and application thereof to preparation of an oxygen-sensitive fluorescent film. The oxygen-sensitive fluorescent indicator is embedded into the nano-polymer capsules by adopting an RAFT (Reversible Additive Fragment Transfer) fine emulsion polymerization method; a core-shell structure and a surface shape of the nano-polymer capsules embedded with the oxygen-sensitive fluorescent indicator can be accurately regulated and controlled, so that effective embedding of the oxygen-sensitive fluorescent indicator is realized and the problem that the oxygen-sensitive fluorescent indicator is easy to leak is solved; a foundation of accurately and rapidly realizing online detection of DO (Dissolved Oxygen) in real time by a dissolved oxygen sensor is obtained; and fluorinated / fluorine-free nano-polymer capsules are combined with a sol-gel technology, so that the nano-polymer capsules embedded with the oxygen-sensitive fluorescent indicator can be uniformly dispersed into a sol-gel matrix to prepare a high-performance sol-gel oxygen-sensitive fluorescent film.

The invention provides a quality control method for extract concentrated liquor of condensed pills of six ingredients with rehmannia root, which comprises the following steps of: 1, measuring the specific gravity, paeonol content and loganin content of the extract concentrated liquor of the qualified condensed pills of six ingredients with rehmannia root, and collecting a near infrared spectrum; 2, establishing corresponding models between the near infrared spectrum and the specific gravity, the paeonol concentration and the loganin concentration in the extract concentrated liquor of the condensed pills of six ingredients with rehmannia root respectively by adopting chemometric software; 3, measuring the near infrared spectrum of an extract concentrated liquor sample, which is to be measured, of the condensed pills of six ingredients with rehmannia root; and 4, by utilizing the corresponding models, acquiring the specific gravity, the paeonol concentration and the loganin concentration of the extract concentrated liquor sample, which is to be measured, of the condensed pills of six ingredients with rehmannia root by the chemometric software respectively.

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.

An embodiment of the present invention provides an on-line monitoring device for the moisture content of transformer insulating oil, including: an oscillation frequency counter, an oil sample constant temperature detection chamber, and a crystal oscillator; The detection chamber is used to generate the oscillation frequency and transmit it to the oscillation frequency counter; the oil sample constant temperature detection chamber is equipped with the crystal oscillator inside, which is used to hold transformer insulating oil; the oscillation frequency counter is connected to the crystal oscillator connected to record the oscillation frequency generated by the crystal oscillator, and obtain the moisture content of the transformer insulating oil according to the change of the oscillation frequency generated by the crystal oscillator. The embodiment of the present invention also provides an online monitoring method for the moisture content of transformer insulating oil, and the method is realized by the device. The invention can quickly, conveniently and accurately monitor the water content in the insulating oil of the transformer on-line.

The invention discloses a non-Newtonian base liquid fluid nanoparticle agglomeration ultrasonic monitoring device and method, comprising a sample pool and an ultrasonic straight probe, a fluid delivery tank for placing a nano solution is arranged in the sample pool, a reflection plate is arranged in the fluid delivery tank, The ultrasonic straight probe is used to send ultrasonic pulses to the reflection plate in the fluid delivery tank, and receive the reflected wave reflected by the reflection plate. The ultrasonic straight probe is connected to the data acquisition and processing system through the ultrasonic pulse transmitter and receiver. Send it to the data acquisition and processing system for data processing. This method can be used to obtain characteristic parameters such as the average radius of the particle clusters inside the nano-solution and the displacement of the particle clusters per unit time, and to monitor in real time the fractal dimension of the random walk path in the fractal structure of the nano-solution and the distribution of particles with different particle sizes in the whole process. Accurately measure the acoustic attenuation coefficient of the particle phase in the solid-liquid two-phase flow, and realize fast online monitoring.

The invention relates to an FPGA (Field Programmable Gate Array)-based acquisition control and signal processing apparatus with an X-ray detector for steel cord conveyor belts; the apparatus mainly comprises a photoelectric conversion control module, a signal acquisition control module and a data correction and homogenization treatment module; the photoelectric conversion control module realizes sequential control to a photoelectric conversion device so as to convert X-ray signals into electrical signals; and the data correction and homogenization treatment module realizes compensation to data deviation caused by the non-uniformity of a belt radian and a photoelectric conversion pixel; the rapid, real-time and accurate online monitoring of the X-ray detector to the steel cords of the conveyor belts can be facilitated; moreover, the control of each part of the X-ray detector and all signal treatment algorithms are realized on the basis of one FPGA, so that the whole detector has higher integration level and lower complexity.