35 results about "Refractometer" patented technology

The utility model relates to a laser cleaning device for a refractometer. The laser cleaning device comprises a refractometer prism, an optical fiber and a laser, the refractometer prism is embedded in the end face of the online refractometer and comprises a first plane and a second plane; the first plane is exposed out of the outer surface of the end face of the online refractometer and is in contact with to-be-detected liquid; the second plane is opposite to the first plane and is positioned in the online refractometer; the optical fiber is arranged in the online refractometer and comprises a first end face and a second end face; the first end face is opposite to a second plane of the refractometer prism, and the second end face is connected with the laser; the laser is used for generating a laser beam capable of cleaning dirt attached to the first plane. The cleaning degree of cleaning can be greatly improved, noise and vibration are avoided, no mechanical operation part exists, energy is saved, cleaning can be conducted while measurement is conducted, and the measurement precision is not affected.

The light transmission structure comprises a light transmission piece and a plurality of light source sets, the wavelengths of light emitted by the light source sets are different, the light transmission piece is provided with a plurality of independent light inlet channels, each light inlet channel is provided with a light inlet and a light outlet, the light inlets correspond to the light source sets in a one-to-one mode, and the light source sets are arranged on the light inlet channels in a one-to-one mode. The light outlets correspond to the light inlet side of a prism of the refractometer, and the light inlet channels are arranged at intervals and are crossed with one another, so that divergence angles of light beams emitted by the light outlets are adjusted, the light beams are ensured not to be overlapped after being imaged, namely a bright-dark interface is relatively clear during imaging, the measurement accuracy of the refractive index of liquid is ensured, and the measurement accuracy of the refractive index of the liquid is improved. And the calculation deviation of the liquid concentration is ensured to be within a reasonable range.

The utility model discloses a fixed online refractometer calibration device which comprises a plurality of liquid storage bottles, a constant-temperature liquid storage tank, a refractometer calibration structure and a circulating pipeline, the liquid storage bottles are used for containing different liquid media. The constant-temperature liquid storage tank is respectively connected with the plurality of liquid storage bottles; two ends of the circulating pipeline are respectively communicated with the constant-temperature liquid storage tank; the refractometer calibration structure is arranged on the circulating pipeline and comprises a reference refractometer, a calibrated refractometer and a temperature sensor. According to the fixed online refractometer calibration device, dynamic calibration can be implemented under the conditions of specific refractive index or concentration and specified temperature, and data deviation caused by factors such as temperature and flow of a liquid medium in offline static calibration is avoided; the device is suitable for detachable online refractometers or online refractometers which have high requirements on measurement accuracy and can be used as reference instruments, and is reasonable in design and high in operability.

The utility model relates to the technical field of pipeline connection, in particular to a pipe joint convenient for mounting a refractometer, which comprises a joint body, and a joint inner groove is arranged on the upper end face of the joint body to ensure that a sensor can be stably mounted in the joint so as to perform accurate measurement or monitoring work. The left side and the right side of the connector body are arranged to be planar installation end faces, two guide cavities are formed in the bottom of the connector inner groove in a bilateral symmetry mode, and an installation opening is formed in the middle of the bottom face of the connector inner groove and used for installing and fixing the refractometer. When the connector is used, the planar mounting end face is arranged at the side end of the connector body, and the pipe connecting groove is formed in the connector position of the pipe connector, so that the connector body is in butt joint with a pipeline to form a sealed folding opening, the butt joint sealing performance of the pipeline and the connector body is greatly improved, and the fluid leakage condition is prevented.

Methods and systems configured to measure content of a target substance in a fluid sample using a refractometer including a light source and a light sensor. A method includes: calibrating the refractometer by identifying a calibration pixel pattern of first pixels of the light sensor illuminated by light from the light source that has reflected off a sensing surface of a container including a reference fluid having a known reference density; identifying a blood pixel pattern of second pixels of the light sensor illuminated by light from the light source that has reflected off the sensing surface when the fluid sample is present in the container; identifying a pixel shift distance along the light sensor from the calibration pixel pattern to the fluid pixel pattern; and determining the content of the target substance in the fluid sample based on the pixel shift distance.

The invention belongs to the technical field of bletilla striata polysaccharide preparation, and provides a high-purity bletilla striata polysaccharide preparation quality control method, which comprises: constructing a raw material spectrum-polysaccharide content prediction model by using Fourier transform near infrared spectroscopy and partial least squares regression PLSR, and intelligently determining an initial material-liquid ratio based on a predicted value; in the extraction stage, the concentration is monitored in real time through an online refractometer, the ultrasonic power, the extraction time or the volume of a supplemented solvent is dynamically adjusted, and it is ensured that the concentration and the viscosity of an extracting solution are in the optimal interval; in the purification stage, the dosage of a purification reagent and the heating rate are dynamically adjusted according to the real-time concentration; in the concentration stage, according to the real-time concentration and viscosity, the vacuum degree is adjusted in a segmented mode, heating is controlled, and end point coking is prevented; according to the invention, on-line monitoring and closed-loop feedback control of key parameters in the whole process are realized, and the purity, uniformity and production stability of the product are remarkably improved.

The invention relates to the technical field of physical quantity precision measurement, in particular to a piston effective area measurement system and method. The system comprises an optical pressure measuring device and a piston pressure gauge pressure measuring device. The optical pressure measuring device comprises a box body, a measuring cavity, a reference cavity and a laser refractometer. The measuring cavity is used for filling a gas medium; the reference cavity maintains a vacuum state; the laser refractometer emits laser to the measuring cavity and the reference cavity. The piston pressure gauge pressure measuring device comprises a piston pressure gauge which comprises an air cylinder and a piston. The piston divides the cylinder into a first space and a second space. The gas source is communicated with the second space and the measuring cavity through the three-way valve, the refractive index of gas in the measuring cavity is obtained through the laser refractometer, and the pressure of the gas is determined through the refractive index of the gas. Calibration of the effective area of the piston is traced to basic physical constants and high-precision measured physical quantities, the pressure is accurately measured, and high precision and reliability of a calibration result are guaranteed.

The invention discloses a method for detecting the salinity of water in oil, which comprises the following steps: step a, uniformly mixing an oil sample, measuring a sample, adding a non-polar solvent into the sample, and uniformly mixing to obtain a sample mixed solution; step b, carrying out centrifugal treatment on the sample mixed solution, standing, carrying out oil-water separation on the sample mixed solution, obtaining a mixed solution of a non-polar solvent and oil liquid on the upper layer of the sample mixed solution, and obtaining a water phase on the lower layer of the sample mixed solution; c, according to the volume of the water phase separated from the sample mixed solution, carrying out water volume adaptation treatment to obtain a detection water sample; and step d, sucking the detection water sample, dripping the detection water sample on a refraction prism of the seawater salinity detector, obtaining the salinity concentration in the detection water sample, and determining whether the water sample is seawater or fresh water according to the salinity concentration of the water sample.

The utility model discloses a refractometer cleaning waste liquid collecting device which comprises a collecting box arranged on one side of a refractometer, the collecting box comprises a waste liquid cavity, a clean cavity and a top cover from bottom to top, a partition plate is arranged between the waste liquid cavity and the clean cavity, and the partition plate is at least used for separating the waste liquid cavity from the clean cavity; a plurality of vertical plates with different heights are arranged on the inner wall of the bottom of the waste liquid cavity, a submersible pump is arranged at one corner of the bottom of the waste liquid cavity and connected with a water feeding pipe, and a valve located in the top cover is arranged at the top end of the water feeding pipe. According to the collecting box, liquid generated after the refractometer is cleaned can be recycled, the recycled cleaning liquid can be filtered, the cleaning liquid can be repeatedly used, the refractometer can be repeatedly cleaned, the cleaning effect on the refractometer is improved, and meanwhile the used cleaning liquid is saved.

The utility model discloses an adjustable refractometer, one end of the refractometer body is provided with a prism body and a cover plate capable of pressing liquid to be detected on the surface of the prism body, and the refractometer body is internally provided with a prism support. The outer wall of one end of the refractometer body is provided with a pressing structure for promoting the cover plate to press the prism body, and the outer wall of the refractometer body is in threaded connection with an adjusting screw cylinder for adjusting the height of the prism support; according to the utility model, the adjusting screw for refractometer calibration is improved, the adjusting screw cylinder is used for replacing the adjusting screw, and the limiting structure which can be automatically locked with the adjusting screw cylinder after being lifted upwards is arranged in the adjusting screw cylinder, so that when a prism is adjusted, only the cap at the top of the extension rod needs to be lifted, and the adjusting screw cylinder can be automatically locked with the adjusting screw cylinder. After the extension rod is lifted to the top of the adjusting screw cylinder, the cap is manually rotated to achieve lifting of the adjusting screw cylinder, and compared with a traditional integrated adjusting screw, the adjusting structure does not need extra tools such as a screwdriver.

The present invention comprises: a light source (2); a light detector (4) that detects the intensity of the received light; an optical system (6, 8, 10, 12) that branches an optical path of light emitted from the light source (2) into a first optical path and a second optical path, merges the first optical path and the second optical path, and guides interference light of the light of the first optical path and the light of the second optical path to the photodetector; a phase modulation unit (18, 20) that is disposed on the first optical path and / or the second optical path and that electrically modulates the phase difference between the light of the first optical path and the light of the second optical path; a control unit (22) configured so as to temporally change the intensity of the interference light detected by the photodetectors (4, 4 ') by temporally changing the drive voltage of the phase modulation units (18, 20) at a predetermined amplitude and periodicity, and a control unit (22) configured so as to temporally change the intensity of the interference light detected by the photodetectors (4, 4'); a storage unit (24) that stores the intensity of the interference light detected by the photodetectors (4, 4 '); and a calculation unit (26) that performs calculation processing using the intensity of the interference light stored in the storage unit (24). The control unit (22) is configured so as to compare a temporal change in the intensity of the interference light in a reference state in which no sample is present on the first optical path and a temporal change in the intensity of the interference light in a measurement state in which a sample is present on the first optical path with the phase modulation unit (18; the time change of the drive voltage of the drive circuit (20, 20) is stored in the storage unit (24) in association with the time change of the drive voltage. The calculation unit (26) is configured so as to calculate the time variation of the driving voltage and the time variation of the intensity of the interference light in the reference state stored in the storage unit (24), and to calculate the time variation of the driving voltage in the measurement state by using the relationship between the time variation of the intensity of the interference light in the reference state and the time variation of the driving voltage in the measurement state stored in the storage unit (24). The amount of phase change of the interference light caused by the sample is determined, and the refractive index of the sample is determined on the basis of the amount of phase change.

An eye-examining apparatus for diagnosing myopia capable of simultaneously measuring the corneal curvature, refractive power, and axial length of the eye to be examined includes a keratometer; a refractometer including an infrared measurement light source, a lens array, and a refractor sensor; an axial length measurement unit including a beam splitter, a reference mirror, and a light detector; and a computation unit configured to calculate the corneal curvature, refractive power, and axial length of the eye to be examined.

The invention discloses a refractometer for measuring liquid concentration and a liquid concentration detection method, the refractometer comprises a light emitting unit, a prism and an imaging unit, the light emitting unit comprises a light source for providing a plurality of probe lights with different wavelengths, and the light incident surface and the light emergent surface of the prism are respectively provided with at least one light incident hole and a plurality of light emergent holes matched with the light incident hole; the detection light forms a virtual light through hole channel in the prism so as to limit the light beam divergence angle of the detection light, the detection light with different wavelengths forms an image array with different spatial positions and / or time differences on the imaging surface of the imaging unit, and the detection light with each wavelength outputs one piece of test data in space or time. According to the invention, a plurality of detection lights with different wavelengths are adopted to correspondingly output a plurality of test data, and a final liquid concentration result is output in a mean value mode, so that the measurement error can be effectively reduced, and the accuracy and the stability of the test result are improved.

The invention provides a capacitive refractometer based on a variable capacitor, and relates to the technical field of atmospheric waveguide parameter detection, and the capacitive refractometer comprises a capacitance detection circuit, a frequency mixing module, a filter circuit and a data processing module which are connected in sequence; wherein the capacitance sensor adopting the variable capacitance is arranged in the capacitance detection circuit; the capacitance value of the capacitance sensor is associated with the entering gas; wherein a detection electric signal influenced by the capacitance value of the variable capacitor is detected and obtained through the capacitance detection circuit, the detection electric signal is subjected to frequency mixing through the frequency mixing module, and the electric signal subjected to frequency mixing is filtered through the filter circuit to generate a stable oscillation signal; the data processing module is also connected with a temperature compensation module; detecting and acquiring a temperature electric signal through a temperature compensation module; the stable oscillation signal and the temperature electric signal are subjected to digital-to-analog conversion and data processing through the data processing module, the refractive index is obtained, and the device has the advantages of being low in cost, high in precision and high in anti-interference capacity.

The utility model relates to a self-cleaning online refractometer which comprises a refractometer body and a flow cell pipeline, a measuring part is arranged at the top of the refractometer, a measuring window is formed in the end of the measuring part, the measuring part is of a columnar structure, the measuring end is obliquely arranged, and the flow cell pipeline is of an approximate Y-shaped three-way structure with the two ends open and the interior hollow. The measuring part of the refractometer main body extends into the side wall of the flow cell pipeline, the inclined surface of the measuring part corresponds to the flowing direction of liquid in the flow cell pipeline, the end part of the measuring part of the refractometer is inclined, the measuring window is formed in the end surface inclined relative to the refractometer, and the measuring part of the refractometer penetrates through the side wall of the flow cell pipeline, so that the liquid in the flow cell pipeline can be measured. The refractometer is arranged in the flow cell pipeline and extends into the flow cell, so that the refractometer extends into the end face in the flow cell pipeline, a preset angle can be formed between the refractometer and the flowing direction of the detection liquid, and the detection window is cleaned through scouring force generated by flowing of the detection liquid.

1. Name of the designed product: online refractometer. 2. Use of the designed product: for measuring the concentration of liquid. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

This work relates to a geometric-phase metasurface combined with a fluidic circuit for tuning the properties of the metasurface (especially its diffraction efficiency). We consider two aspects of particular interest: A) Dynamic on-demand diffractive optics (operating in transmission), both as optical elements for altering incident light, and as sensors of the refractive index of a fluid; and B) Transparent, reflective displays. Here the display itself is transmissive, but operates in reflection. One application of dynamic on-demand diffractive optics is to replace the lens array often needed in light field displays.

A refractometer and a method for measuring refractive index is disclosed. The refractometer comprises a light source, a reflecting module, a lens module, an array sensor, and a processor, wherein the reflecting module is configured to receive optical beams from the light source, the reflecting module comprises a detection surface configured to totally reflect at least part of the optical beams; the lens module is configured to converge optical beams from the detection surface onto a focal plane of the lens module; and the array sensor is located on the focal plane of the lens module.

The utility model discloses a mobile online refractometer calibration device which comprises a liquid storage tank, a delivery pump, a reference refractometer, a calibrated refractometer, a temperature sensor, a gear flowmeter, a plurality of three-way valves and a waste liquid tank, the liquid storage tank is used for storing a detection medium or a cleaning medium and is respectively connected with the delivery pump and the waste liquid tank through a first three-way valve, the delivery pump is respectively connected to the reference refractometer and the calibrated refractometer through a second three-way valve and a third three-way valve, and the reference refractometer and the calibrated refractometer are connected in parallel in a pipeline; temperature sensors are respectively arranged at the inlet ends and the outlet ends of the two valves, gear flow meters are arranged at the outlet ends, and finally the valves are connected to a liquid storage tank through a fourth three-way valve and a fifth three-way valve. The mobile online refractometer calibration device can be used for calibration in an internal circulation mode, and can also be connected into a working condition pipeline provided with a calibrated refractometer to dynamically calibrate the calibrated refractometer on a user site in an external circulation mode.

This invention provides a technology that allows for the omission of a refractometer in a liquid dispensing device. [Solution] The liquid dispensing device comprises a liquid dispensing head having a nozzle for dispensing liquid as droplets, a first measuring unit configured to irradiate the liquid dispensed from the nozzle with laser light and used to measure the phase difference of the laser light that has passed through the liquid, a second measuring unit used to measure the velocity of the liquid dispensed from the nozzle, and a processor. The processor performs information processing to determine the concentration of the liquid using the phase difference information and the velocity information.

The invention provides an alcoholic strength quantification method, which comprises the following steps of: i, providing pure alcohol, and carrying out segmented dilution by using distilled water; wherein the segmented dilution comprises a plurality of segments; ii, taking a plurality of drops of alcohol for each section, measuring the alcoholic strength of the section by using an alcohol meter, and measuring the refractive index of the section by using a refractometer; iii, marking the alcoholic strength on an abscissa and marking the refractive index on an ordinate to draw an alcoholic strength curve graph; and iv, measuring the refractive index of a to-be-measured wine product, and substituting the refractive index into the alcoholic strength curve graph to obtain the alcoholic strength of the to-be-measured wine product. According to the alcoholic strength quantitative method, the refractometer is used for measuring the alcoholic strength, so that the sample consumption and the measurement time can be saved, the error rate of the alcoholic strength obtained by the method is within 0.3%, and the method is a rapid and accurate quantitative method.

The utility model belongs to the technical field of concentration detection, and particularly relates to a solution concentration real-time detection device which comprises a rack, a detection cavity, an online refractometer and an ultrasonic cleaning machine. The detection cavity is mounted in the rack, a detection chamber is formed in the detection cavity, and a circulating flow path is formed between the detection chamber and the mixing barrel; the online refractometer is mounted on the side surface of the detection cavity, comprises a detection probe positioned in the detection cavity, and can detect the concentration of a solution in the detection cavity in real time; the ultrasonic cleaner is also mounted on the side surface of the detection cavity and used for cleaning the surface of the detection probe; by arranging the detection cavity for sampling in the mixing barrel and forming a circulating flow path, real-time detection of a solution in the mixing barrel is realized, the concentration precision of the solution is ensured, meanwhile, the detection cavity is convenient for cleaning a detection probe by using an ultrasonic cleaning machine, the probe is prevented from being taken out during cleaning, and the cleaning convenience is improved.

The invention relates to a liquid ejecting apparatus, a liquid ejecting method, and a method, apparatus and method of manufacturing an article. Provided is a technique capable of omitting a refractive index meter in a liquid ejecting apparatus. The liquid ejecting apparatus includes a liquid ejecting head having a nozzle that ejects a liquid as a droplet, a first measuring section configured to irradiate a laser beam onto the liquid ejected from the nozzle and measure a phase difference of the laser beam passing through the liquid, a second measuring section configured to measure a velocity of the liquid ejected from the nozzle, and a processor. The processor executes information processing for obtaining the concentration of the liquid using the phase difference information and the velocity information.

The utility model discloses a high precision refractometer, concretely relates to refractometer technical field, including refractometer main part, the refractometer main part top is provided with gland and correction screw, the refractometer main part top is fixed with the grip, the grip one side close to correction screw is hinged with the protective cover, the protective cover covers the correction screw, the protective cover is fixed on the refractometer main part top, and the refractometer main part top is fixed on the refractometer main part top. A storage groove is formed in the side, close to the gland, of the protection cover, an insertion plate is arranged in the storage groove in a sliding mode, an insertion groove is formed in the side, close to the insertion plate, of the gland, the insertion plate is connected with the insertion groove in an inserted mode, and a shifting assembly is arranged at the top of the insertion plate. The refractometer main body is provided with the grip, so that the stability of holding the refractometer main body can be improved, the protective cover on the grip can play a role in protecting the outer side of the correction screw so as to prevent the correction screw from loosening when being collided to influence the detection precision, and meanwhile, the gland is fixed by the insertion plate on the protective cover and the insertion slot on the gland in an insertion manner, so that the detection precision is improved. And the influence on the liquid fixing effect caused by gland loosening is avoided.

The present application relates to the field of liquid refractive index and turbidity measurement, and discloses a method, system and device for simultaneously measuring liquid refractive index and turbidity, wherein the method comprises the following steps: S1, measuring the liquid to be measured by using a reflection type refractometer, a photoelectric sensor in the refractometer collecting a brightness image, the refractometer having a prism, the prism being in contact with the liquid to be measured to form a contact interface, the brightness image including a reflected light spot formed by light directly reflected by the contact interface and a scattering factor formed by light reaching the photoelectric sensor after passing through the contact interface into the prism after being scattered by the liquid to be measured; S2, obtaining the refractive index of the liquid to be measured through the position of the brightness change boundary line of the reflected light spot, and obtaining the turbidity of the liquid to be measured through the scattering factor. The present application can simultaneously measure the liquid refractive index and turbidity by using a refractometer, and the measurement is simple and low in cost.

1. The name of the design product: online detection concentration refractometer. 2. The use of the design product: the design product is used for online detection concentration refractometer. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

Apparatus for carrying out a process for the production of alkali metal cyanide using gaseous hydrogen cyanide, hydrogen cyanide-containing gas or liquid hydrogen cyanide and an aqueous alkali metal hydroxide solution, comprising a) a conduit for transporting a liquid formed during the process, selected from an aqueous alkali metal cyanide solution or an aqueous alkali metal cyanide suspension and b) a system for online determination of one or more process parameters of the liquid transported through the pipeline, which serve for process control of the procedure, wherein the system comprises b1) a refractometer for measuring the refractive index of the liquid formed, wherein the refractometer or part thereof is arranged in the line for contact with the liquid, (b2) an ultrasonic measuring device for determining the mass flow rate of the liquid, wherein the ultrasonic measuring device is arranged outside the line without contact with the liquid, wherein the refractometer and the ultrasonic measuring device are configured to communicate with each other and exchange data, b3) one or more computing units configured to receive the readings from the refractometer and the ultrasonic measuring device, and the computing unit(s) configured to use the received readings from the refractometer and the ultrasonic measuring device to determine one or more process parameters of the liquid.

The utility model discloses a temperature control device for metering detection of an on-line refractometer, relates to on-line detection equipment for substance content or concentration, and mainly aims to provide a temperature control device which can ensure the reliability and the accuracy of a result of on-line detection of the substance content and is used for metering detection calibration of the on-line refractometer. According to the main technical scheme, the temperature control device for metering detection of the online refractometer comprises a loading part, the online refractometer is provided with a prism part, the prism part is arranged in the online refractometer, a container part comprises a sample container and a constant-temperature container, the sample container is arranged on the inner side of the constant-temperature container, and the loading part is connected with the loading part. The prism component is arranged at the bottom of the sample container; the constant-temperature part comprises a constant-temperature water tank, a connecting pipeline and a thermometer, one end of the connecting pipeline is connected to the constant-temperature water tank, the other end of the connecting pipeline is connected to the constant-temperature container, and the thermometer extends into the sample container. The device is mainly used for detecting the content of substances.

The utility model relates to the technical field of refractor eyepieces, in particular to an assembly type refractor eyepiece which comprises a refractometer base, the outer wall of the refractometer base is fixedly connected with an assembly mechanism, the assembly mechanism comprises a fixed seat fixedly installed on the outer wall of the refractometer base, a butt joint groove is formed in the fixed seat, and the butt joint groove is fixedly connected with the refractometer base. An L-shaped guide groove is formed in the inner side wall of the butt joint groove. According to the utility model, by moving the eyepiece main body, the butt-joint insertion ring is inserted along the butt-joint groove, the two movable blocks are driven to be slidably inserted along the corresponding L-shaped guide grooves, and the eyepiece main body is rotated, so that the butt-joint insertion ring can rotate in the butt-joint groove, and the movable blocks rotate to the tail ends of the L-shaped guide grooves along the L-shaped guide grooves; and under the magnetic attraction action of the first magnetic block and the second magnetic block, the movable block can be limited, so that the effect of stably assembling the eyepiece main body is facilitated, the actual replacement and assembly efficiency is improved, and the use convenience of the refractometer is further improved.

This invention discloses a method for joint reconstruction of refractive surfaces and underwater scenes based on 3D Gaussian ray tracing, belonging to the field of computer vision and 3D reconstruction technology. By designing a hybrid water surface representation method, the water surface is represented as a neural height field; refraction calculations are performed to obtain the corresponding rays after refraction through the water surface; the underwater scene is modeled as a 3D Gaussian field for underwater scene rendering; a multi-view image supervision model is constructed, a 3D reconstruction loss function is designed, and end-to-end joint optimization is performed; thus, joint reconstruction of refractive surfaces and underwater scenes based on 3D Gaussian ray tracing is achieved. This invention achieves high-precision reconstruction while ensuring fast training speed and real-time new perspective rendering frame rate, solving the technical problems of high computational cost, multi-view geometric inconsistency, and inability to efficiently extract and separate water surface and underwater geometric structures in existing underwater scene 3D reconstruction methods.