43 results about "Turbidity Measurement" patented technology

The invention provides a water turbidity measurement method and system for water ecological investigation, and the method comprises the steps: determining the scattering difference characteristics of suspended particles in a to-be-detected water body to light through collecting a scattered light signal of the to-be-detected water body and a light signal of a corresponding environment background of the to-be-detected water body; determining a disturbance error of the flow velocity in the to-be-measured water body during measurement of the suspended particles; determining the turbidity gradient of the suspended particles in the to-be-detected water body based on the turbidity inversion model in combination with the scattering difference characteristics and the disturbance error; determining the viscosity state of the water body power in the to-be-detected water body, and determining the attenuation relationship between the suspended particles in the to-be-detected water body and the temperature according to the viscosity state and the fluctuation characteristics of the ambient temperature around the to-be-detected water body; and dynamically compensating the turbidity gradient of the suspended particles in the to-be-detected water body through the attenuation relationship to obtain a dynamic turbidity value of the to-be-detected water body. By adopting the scheme of the invention, the influence of multi-parameter dynamic interference on the measurement of the water turbidity in the to-be-measured water can be reduced.

The invention discloses a high-turbidity measuring method, a high-turbidity measuring instrument, a medium and a program product, and relates to the field of testing or analyzing materials by means of measuring chemical or physical properties of the materials.In the method, the filtering transmission light intensity and the filtering scattered light intensity of a red light wave band and the filtering transmission light intensity and the filtering scattered light intensity of a white light wave band are collected; respectively determining a first group of weighting coefficients corresponding to the first turbidity range and a second group of weighting coefficients corresponding to the second turbidity range based on the corresponding relationship between the light intensity ratio and the turbidity value of the standard turbidity sample; calculating an initial turbidity value of the to-be-detected water sample based on the first group of weighting coefficients; judging whether the initial turbidity value is greater than a preset range threshold value or not; if yes, calculating a final turbidity value of the to-be-detected water sample based on a second group of weighting coefficients; if not, taking the initial turbidity value as the final turbidity value of the water sample to be detected; the final turbidity value of the water sample to be detected is displayed in the display screen. The method is used for improving the accuracy of testing the high-turbidity water sample.

Provided is a device for determining the end point of a sample pretreatment through real-time turbidity measurement, the device comprising: a sample holding frame in which sample holders for holding a plurality of sample containers are arranged spaced apart concentrically around a central point and rotate in one direction, either clockwise or counterclockwise, on a plane; a sample holder into which a sample container is inserted; a pretreatment unit for performing a pretreatment process in which a sample supplied to the sample container is subjected to ultrasonic waves and acid or alkaline extraction to measure the total organic carbon (TOC) of the sample; a turbidity sensor unit for measuring the turbidity of the sample; and a control and determination unit which controls the turbidity sensor unit to measure the turbidity of the sample at regular time intervals during a pretreatment, checks a turbidity change rate (NTUn / NTUn-k, 1≤k≤3), which is the ratio of the currently measured turbidity to a previously measured turbidity, and determines that it is the end point of the pretreatment and controls the pretreatment unit to terminate the pretreatment process if the turbidity change rate (NTUn / NTUn-k) is within 30%.

The utility model discloses a turbidity measuring circuit, and relates to the field of measuring circuits. According to the specific implementation scheme, the device comprises a sensitive element, an amplifying circuit arranged at the output end of the sensitive element and a gain adjusting module used for controlling the gain of the amplifying circuit; the amplification circuit comprises a first amplification circuit, a second amplification circuit and a third amplification circuit which have different gains, and the first amplification circuit, the second amplification circuit and the third amplification circuit are sequentially connected in series; the first amplifying circuit, the second amplifying circuit and the third amplifying circuit are electrically connected with the gain adjusting module. According to the utility model, the effect of adjusting the measuring range is realized by adjusting the gain of the amplifying circuit, and the problems that the precision of a low-measuring-range range is low and high-precision measurement cannot be realized are solved.

The invention discloses a pressure-resistant high-precision water quality low-turbidity measuring device, and belongs to the technical field of water quality turbidity measurement. And the pressure buffering mechanism is arranged on the mounting back plate. According to the pressure-resistant high-precision water quality low-turbidity measuring device, a measuring flow cell is formed through cooperation of the mounting back plate, the pressure buffering mechanism and the detection mechanism, the problem that stable measurement cannot be achieved under the condition of long-term water pressure and pump pressure tolerance is solved, and the pressure-resistant high-precision water quality low-turbidity measuring device is convenient to use through use of the pressure buffering mechanism. Pressure water flow firstly impacts a buffering conical panel in a first-stage buffering cavity, a conical inclined surface of the buffering conical panel can disperse impact force and preliminarily remove large impurities and bubbles, then a buffering spring and a damping rod act synergistically to absorb pressure fluctuation energy and ensure that the buffering process is stable, and the water flow enters a second-stage buffering cavity through a second separating and filtering buffering plate. Finer flow stabilization and bubble removal are carried out, and unstable pressure water flow can be converted into soft and stable water sample flow.

The invention relates to a water area suspension pollution detection and evaluation method which comprises the following steps: constructing a space coordinate system, and implanting a water body and a terrain model into the space coordinate system; measuring the initial water body turbidity Tj of the water body to be detected; obtaining detection coordinates (xi, yi, zj) of the turbidity determination module; constructing a water body turbidity model (x, y, z, T '); judging whether the water body turbidity T'is greater than a preset standard water body turbidity T standard, if so, judging that the water body to be detected is a polluted water body, and if not, judging that the water body to be detected is a qualified water body. Detection can be carried out in real time, obtained data are accurate, the detection cost is low, detection of a single detection point is avoided, the detection data volume is large, and the data are accurate; by constructing the water turbidity model, observation is convenient and visual, data are accurate, detection is convenient, detection data can be obtained in real time, data processing is timely, and timely countermeasure processing is facilitated.

The invention relates to the technical field of water quality on-line monitoring and optical detection, in particular to a water quality turbidity on-line monitoring system of a vegetable cleaning circulating waterway, which comprises the following steps: collecting 90-degree lateral scattering light intensity time sequence waveform, 180-degree transmission light intensity time sequence waveform and flow velocity characteristic parameters; constructing a low-frequency continuous change ideal reference based on a preset Mie scattering theory model and the flow velocity characteristic parameters; injecting a non-target scattering interference parameter to generate an interfered simulation waveform; respectively extracting an actual measurement residual error template set and a theoretical residual error template set; performing morphological similarity comparison and outputting an interference judgment result; eliminating and compensating interference fragments, reserving measured data of non-interference fragments, and resolving a corrected turbidity result; and updating the interference parameters and the ideal reference according to the corrected turbidity result and the interference judgment result. The stability and the accuracy of turbidity measurement in the dynamic circulating waterway can be improved.

The invention relates to the technical field of turbidity measurement, and discloses a turbidity measurement method and a turbidity sensor.The method comprises the steps that an infrared emission device is controlled to emit light pulses in a preset pulse width range to a water sample to be measured, and scattered light signal waveforms in the water sample to be measured are synchronously collected; identifying a peak point in the scattered light signal waveform, and determining a peak sampling moment corresponding to the peak point; obtaining a first sampling value at a previous moment adjacent to the peak sampling moment and a second sampling value at a next moment based on the scattered light signal waveform; and calculating the turbidity of the to-be-detected water sample based on the first sampling value and the second sampling value. Through the collaborative design of pulse driving and sampling at adjacent moments on two sides of a peak value, the linearity, the stability and the resolution of turbidity measurement are greatly improved.

1. The name of the design product: steady flow defoaming ultra-low turbidity measurement flow device. 2. The use of the design product: for providing steady water flow and eliminating bubbles interfering with measurement for ultra-low turbidity measurement process. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view.

The present invention relates to a turbidity measurement device and a turbidity measurement method capable of measuring the water quality turbidity of water for home appliances, the turbidity measurement device comprising: a fluid storage unit comprising a reflector; a first light source that emits light to the fluid inside the fluid storage unit; a first light receiving unit that receives scattered light scattered by suspended particles in the fluid; a control unit that measures the turbidity of the fluid by controlling the first light source and the first light receiving unit; the first light source and the first light receiving unit are disposed at a predetermined angle from each other around the fluid storage unit at the periphery of the fluid storage unit, and the reflector is located between a first surface facing the first light source and a second surface facing the first light receiving unit among the surfaces of the fluid storage unit.

A controller is in signal communication with a pressure sensor, a turbidity sensor, a conductivity sensor and a temperature sensor. The controller is configured to monitor the pressure measurement of the pressure sensor and record an ambient temperature measurement in response to the pressure measurement stabilizing. The controller is also configured to record a turbidity measurement from the turbidity sensor, a conductivity measurement from the conductivity sensor, and a temperature measurement from the temperature sensor in response to the pressure measurement incrementing. Additionally, the controller is configured to compare the turbidity measurement to a reference turbidity value, the conductivity measurement to a reference conductivity value, and the temperature measurement to the ambient temperature measurement, and determine either a presence or an absence of fluid in the wash tub based at least in part on the turbidity measurement, the conductivity measurement, and the temperature measurement.

The present invention discloses a three-dimensional turbidity measurement method and measurement system based on space scanning, which establishes a three-dimensional xyz coordinate system in the three-dimensional space to be measured, scans and measures the xoz coordinate plane and the yoz coordinate plane respectively, and obtains gridded turbidity data; now Coordinate plane and summer Calculate the turbidity in three dimensions from the plane or one-dimensional turbidity data of the coordinate plane C NTU The present invention can process the now Coordinate plane and summer The turbidity data of the coordinate plane can be quickly calculated to obtain the turbidity of the three-dimensional space that reflects the overall measurement situation. On the other hand, the present invention can process the turbidity of the three-dimensional space by a single-dimensional calculation method. now Coordinate plane and summer The turbidity data on the coordinate plane can be used to more accurately calculate the turbidity in three-dimensional space, meeting the high-precision requirements of turbidity measurement in three-dimensional space, solving the limitations of single-point measurement, and having good practicality.

The utility model discloses a handheld turbidity measuring instrument and relates to the technical field of turbidity measurement. The handheld turbidity measuring instrument is an open container and comprises a square black scale vertical plate, a transparent front plate, a right triangle transparent first side plate and a right triangle transparent second side plate, the included angle between the scale vertical plate and the front plate is 15 degrees, and the first side plate and the second side plate are arranged on the two sides of the scale vertical plate and the front plate. And the turbidity measuring instrument is made of a high borosilicate glass material with high temperature resistance and strong alkali corrosion resistance. The handheld turbidity measuring instrument disclosed by the utility model has a unique structure, has high temperature resistance, strong alkali corrosion resistance and high visualization, is portable to use, and can quickly realize turbidity detection of a sodium aluminate solution. And meanwhile, the operation is simple, the detection time is shortened, and the labor intensity of operators is reduced.

A luminous intensity adjustment-based turbidity measurement method and system. The turbidity measurement method comprises the steps: 1, by means of a transmitting circuit, a controller stimulates a multi-light-intensity LED to emit light, which is received by a photodiode after passing through a test solution and is then transmitted to the controller by means of a receiving circuit, and the controller processes data to obtain an S value; 2, by means of an I / O, the controller controls the luminous intensity of the multi-light-intensity LED so as to emit light of multiple light intensities, and two or more standard solutions are used to calibrate the light of multiple light intensities, thereby calibrating parameters for calculating the S value; and 3, a solution under test is tested and, during the testing process, the controller controls the multi-light-intensity LED to separately emit one of the light of multiple light intensities so as to measure the S value, compares the S value with the parameters calibrated in step 2, and adjusts the light intensity of the multi-light-intensity LED on the basis of a comparison result so as to measure the turbidity of the solution under test. The accuracy and stability of test results are improved.

The invention relates to a method for single-point nearby comparison and valuation of a turbidity standard substance, which comprises the following steps of: (1) preparing an experimental instrument, adjusting environment temperature and humidity, and calibrating the experimental instrument by using the standard substance; (2) selecting a high-precision turbidity measuring instrument to measure the turbidity standard substance sample to be determined; (3) accurately diluting the national confirmed turbidity standard substance according to the measured value of the turbidity standard substance sample to be valued, and preparing a turbidity standard substance close to the indicated value; and (4) alternately measuring the turbidity values of the diluted turbidity standard substance and the sample to be valued, repeatedly measuring for more than or equal to 3 times under the same condition, eliminating abnormal values according to a statistical method, and taking the measured average value to participate in valuing. According to the method, the accuracy of the fixed value can be remarkably improved, the operation process is simplified, the method has very high general applicability, and the result is traceable.

1. Name of the product in this design: Defoaming Ultra-Low Turbidity Measuring Flow Device. 2. Purpose of this product design: To assist in the measurement of ultra-low turbidity, ensuring the flow of water samples while eliminating air bubble interference. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application discloses a long-time sequence environmental monitoring data storage and processing method, relates to the technical field of environmental monitoring data processing, and is suitable for a long-time continuous water environmental monitoring scene of a fixed section automatic monitoring station. Without increasing additional monitoring hardware, in view of the problems that single equipment disturbance, single real water body change and a mixture of the two in a turbidity deviation process in a device action adjacent period are difficult to distinguish, and abnormal entry and removal have time asymmetry, based on turbidity measurement records, auxiliary water quality index measurement records and device action records, the starting boundary and the ending boundary of the confused time section are stably determined, and the section is separately saved from a conventional abnormal processing chain, so that accurate and consistent section basis is provided for subsequent storage, statistics and processing.

The present invention relates to the technical field of liquid turbidity measurement, and provides a visual turbidimetric apparatus and a measurement method therefor. The visual turbidimetric apparatus comprises an observation box, an observation assembly, and a lighting assembly. The observation box comprises a box body, an observation space is provided within the box body, and an observation window is provided on at least one side of the box body. At least one side of the box body is detachable to form an opening used to place and retrieve a measurement sample. The observation assembly comprises a first base and a first rotating shaft. A first end of the first rotating shaft is rotatably connected to a bottom wall of the box body, the first base is fixedly connected onto a shaft body of the first rotating shaft, and a second end of the first rotating shaft extends out of a top wall of the observation box. The first base is used to place a measurement sample, and the observation window faces an observation position. The lighting assembly is used to illuminate the measurement sample at the observation position, and is disposed on an inner wall of the observation box. By means of rotating the first rotating shaft, switching of different measurement samples at the observation position can be achieved, thereby improving the efficiency of sample measurement.

The invention provides a surface scattering type turbidimeter and a turbidity measuring method, which change the position relation between the light irradiation position of the liquid surface and a light receiving element to improve the accuracy of turbidity measurement. The measurement tank stores a liquid to be measured. The light source emits light to the liquid surface of the liquid to be measured stored in the measuring tank. The light receiving element receives scattered light generated in the measurement tank by light from the light source. The changing mechanism changes the irradiation position of the light from the light source on the liquid surface and the relative position of the component of the light receiving element with respect to the traveling direction of the light, said component being horizontal to the liquid surface. The turbidity value calculation unit calculates the turbidity value of the liquid to be measured on the basis of the scattered light received by the light receiving element.

The invention provides a linear multi-position compensation large-range turbidity measurement sensor which comprises a solution carrying disc, an LED light source and a linear photodiode array are arranged corresponding to the solution carrying disc, and a collimating lens is arranged between the LED light source and the solution carrying disc; light emitted by the LED light source through the collimating lens is scattered in a solution to be detected and is emitted out through a light hole of the aperture diaphragm; scattered light at each angle is captured by the linear photodiode array, light intensity information is linearly compensated by the linear photodiode array, and the LED light source and the linear photodiode array are electrically connected with the control system. According to the invention, scattered light at each angle is compensated by a linear array, so that the application range of turbidity measurement is greatly increased, the comprehensiveness and the integration of turbidity measurement are realized, the problems of measurement error increase and resolution reduction under large turbidity are solved, the turbidity measurement range and the measurement precision under high turbidity are greatly improved, and the method is suitable for large-scale popularization and application. The method can be widely applied to the field of water turbidity measurement.

A method, instrument, medium, and procedure for measuring high turbidity are disclosed, relating to the field of testing or analyzing materials by measuring their chemical or physical properties. In this method, the intensity of filtered transmitted light and filtered scattered light in the red light band, and the intensity of filtered transmitted light and filtered scattered light in the white light band are collected. Based on the correspondence between the light intensity ratio and turbidity value of a standard turbidity sample, a first set of weighting coefficients corresponding to a first turbidity range and a second set of weighting coefficients corresponding to a second turbidity range are determined. Based on the first set of weighting coefficients, the initial turbidity value of the water sample to be tested is calculated. It is then determined whether the initial turbidity value is greater than a preset range threshold. If so, the final turbidity value of the water sample to be tested is calculated based on the second set of weighting coefficients. If not, the initial turbidity value is used as the final turbidity value of the water sample to be tested. The final turbidity value of the water sample to be tested is displayed on a screen. This application aims to improve the accuracy of testing high-turbidity water samples.

Provided is an accurate turbidity measurement system and method, using a speckle pattern, in which a speckle pattern may be used for turbidity measurement, thereby enabling turbidity and bacterial or microbial contamination to be measured with high accuracy. The system may include: a measuring container which has a light input part formed in one side thereof, has a light scattering space formed therein, and has a light output part formed in the other side thereof; and an optical dilution member which is formed in at least a portion of the light scattering space, has a sample receiving part formed in one side thereof, and comprises an optical dilution medium having a role of optically diluting a speckle pattern of the sample.

The invention provides a water transparency monitoring method and equipment based on turbidity measurement, belongs to the technical field of water environment monitoring, and aims to solve the problems of poor accuracy and stability of a monitoring result caused by poor fitting degree of a conversion model and neglect of environment illumination interference in the prior art. The method comprises the following steps: collecting an original turbidity value of a water body, water surface incident illumination intensity, a weather type and a water body type; compensating and correcting the original turbidity value based on the collected parameters to obtain a compensated turbidity value; and substituting the compensated turbidity value into a preset power exponent relational expression, and calculating to obtain the transparency of the water body. The equipment comprises an acquisition module and a processing module and is used for executing the method. According to the invention, through a strategy of first compensation and then conversion, the ambient light interference is effectively offset, the monitoring precision and stability of the full turbidity interval are improved, and low-cost and automatic continuous monitoring can be realized.

[Problem] To provide a prediction system and a chemical solution that make it possible to predict the occurrence of troubles on paper, thereby preventing the occurrence of troubles on paper. [Solution] The present invention provides a prediction system and a chemical solution. The prediction system is provided with: a measurement unit 30 for performing water quality measurement of a pulp suspension; an imaging unit 40 for imaging paper that has passed through a dry part; and a control unit 20 connected to the measurement unit and the imaging unit. The water quality measurement is at least one selected from the group consisting of suspended solids measurement, turbidity measurement, ash content measurement, oxidation-reduction potential measurement, total raw material concentration measurement, raw material yield measurement, ash content yield measurement, conductivity measurement, water temperature measurement, and pH measurement. The control unit 20 includes: an acquisition means 21 for acquiring image data and a measurement result; a detection means 22 for detecting an incipient defect; an extraction means 23 for extracting a feature amount of the incipient defect; a classification means 24 for classifying the incipient defect by type; a model acquisition means 25 for acquiring a prediction model indicating a relationship between measurement information and defect count information; a setting means 26 for setting a threshold to a calculated measurement result obtained from the prediction model; and a transmission means 27 for transmitting an alert when an actually measured measurement result exceeds the threshold.

To provide a prediction system and a chemical solution that can predict the occurrence of defects in paper and thereby prevent the occurrence of defects in paper. [Solution] The present invention provides a prediction system and chemical solution comprising a measurement unit 30 for measuring the water quality of a pulp suspension, an imaging unit 40 for imaging paper that has passed through a dry part, and a control unit 20 connected to the measurement unit and the imaging unit, wherein the water quality measurement is at least one selected from the group consisting of suspended solids measurement, turbidity measurement, ash measurement, oxidation-reduction potential measurement, raw material total concentration measurement, raw material yield measurement, ash yield measurement, conductivity measurement, water temperature measurement, and pH measurement, and the control unit 20 has an acquisition means 21 for acquiring image data and measurement results, a detection means 22 for detecting precursory defects, an extraction means 23 for extracting features of precursory defects, a classification means 24 for classifying precursory defects by type, a model acquisition means 25 for acquiring a prediction model showing the relationship between measurement information and defect count information, a setting means 26 for setting a threshold for the calculated measurement results obtained from the prediction model, and a transmission means 27 for transmitting an alert when the actual measurement results exceed the threshold.

The application discloses a seawater salt turbidity measurement system and method based on optical carrier radio frequency, and mainly relates to the technical field of marine environmental sensors. The seawater salt turbidity measurement system comprises the following steps: emitting a double-channel radio frequency signal with a fixed frequency difference through an adjustable signal source, generating an optical carrier radio frequency signal through an electro-optical modulator and a laser modulator, entering a seawater sensing chamber through a collimating emission light path, converting the transmitted optical carrier radio frequency into a radio frequency signal through a coupling receiving light path and a photoelectric detector, reflecting the salt turbidity information of seawater on the radio frequency characteristics of the radio frequency signal, performing frequency mixing measurement on the radio frequency signal based on a double-mixing measurement method, and obtaining a seawater measurement signal. The seawater salt turbidity measurement method comprises the following steps: extracting group delay data and phase noise data of the seawater measurement signal, constructing a seawater turbidity calculation model and a system salt turbidity decoupling model, and calculating the salt turbidity of seawater based on the group delay data and the phase noise data.

The application provides a water turbidity measurement method and system for water ecological investigation, which determines the scattering difference characteristics of light rays by suspended particles in the water to be measured by collecting the scattering light signal of the water to be measured and the light signal of the corresponding environmental background of the water to be measured, determines the disturbance error of the flow rate in the water to be measured when measuring the suspended particles, determines the turbidity gradient of the suspended particles in the water to be measured based on a turbidity inversion model combined with the scattering difference characteristics and the disturbance error, determines the viscosity state of the water power in the water to be measured, determines the attenuation relationship between the suspended particles and the temperature in the water to be measured according to the viscosity state and the fluctuation characteristics of the ambient temperature of the water to be measured, dynamically compensates the turbidity gradient of the suspended particles in the water to be measured through the attenuation relationship, and further obtains the dynamic turbidity value of the water to be measured. The application can reduce the influence of the measurement of the water turbidity in the water to be measured under the dynamic interference of multiple parameters.

A sensor positioning device, having a holding module, with a sensor receptacle, fastening element and spring element, the sensor receptacle being mounted movably relative to the fastening element along a compensating axis. The spring is arranged between the fastening element and the sensor receptacle to cooperate therewith, to create a restoring force during movement of the receptacle relative to the fastening element. A measurement connector with an abutment is configured for arrangement onto a process container, and is configured for releasable arrangement on the holding module. The sensor positioning device is configured such that, when the measurement connector is arranged on the holding module, the sensor receptacle is movable relative to the fastening element along the axis, and a pressing force of the sensor receptacle onto the abutment of the measurement connector is created by the spring. A sensor unit, for turbidity measurement, is provided having the sensor positioning device.

To provide a surface-scattering type turbidimeter and turbidity measuring method that improve the accuracy of turbidity measurement by changing the positional relationship between the light irradiation position on the liquid surface and the light-receiving element.SOLUTION: A measurement tank stores the liquid to be measured. A light source irradiates the surface of the liquid stored in the measurement tank with light. A light-receiving element receives scattered light generated in the measurement tank by the light emitted from the light source. A changing mechanism changes the relative position, with respect to the horizontal component of the light traveling direction at the liquid surface, between the irradiation position of the light from the light source on the liquid surface and the light-receiving element. A turbidity value calculation unit calculates the turbidity value of the liquid to be measured on the basis of the scattered light received by the light-receiving element.SELECTED DRAWING: Figure 1

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.