40 results about "Salinity measurement" patented technology

A soil parameter measurement arrangement includes a capacitive based soil moisture and salinity sensor, a predetermined moisture migration medium located in a volume adjacent said sensor so that the medium substantially occupies the field of influence of said sensor. The medium is in moisture communication with the soil to be measured, and said sensor is adapted to measure and produce data representative of the volumetric water content of said medium. A sensor data processing means determines both the soil moisture and salinity of said medium. By using the measured volumetric soil moisture content and the moisture release curve of the medium, it is possible to derive the matric potential of the soil. The measured salinity of the medium corresponds to the salinity of the soil that is in moisture communication with the medium.

The invention discloses a continuous observation system for dissolving of methane in a surface water body, relating to greenhouse gas monitoring equipment. The continuous observation system is provided with a surface water pump, filtering equipment, temperature and salinity measurement equipment, a flow controller, a water-vapor balance device, a temperature probe, a gas pump, a cold trap, a waterproof electrode, a filtering device, an off-axis integral cavity output spectrum detector, a valve and a standard gas cylinder; a water inlet of the surface water pump is arranged underwater, a water outlet of the surface water pump is connected with an inlet of the filtering equipment, an outlet of the filtering equipment is connected with the temperature and salinity measurement equipment, an outlet of the temperature and salinity measurement equipment is connected with an inlet of the flow controller, an outlet of the flow controller is connected with the balance device which is communicated with the atmosphere, an air outlet formed in the upper part of the balance device is connected with a gas inlet of the gas pump, the temperature probe is arranged in the balance device, a gas outlet of the gas pump is connected with an inlet of the cold trap, an outlet of the cold trap is connected with the waterproof electrode, an outlet of the waterproof electrode is connected with an inlet of the filtering device, an outlet of the filtering device is connected with an inlet of the detector, and an outlet of the standard gas cylinder is connected with the balance device and the detector through the valve respectively.

The invention discloses a seawater salinity measurement system and method based on an orthogonal phase-locked amplification technology. The system comprises a constant temperature water bath in whicha conductive cell, a spiral coil, a stirrer and a constant temperature device; the conductive cell, the stirrer and the constant temperature device are all connected with the detection control device;the detection control device is also connected with a multiport valve, a peristaltic pump and a computer terminal; the multiport valve is a three-in one-out multi-ported valve, the inputs are separately connected with an ultrapure water storage tank, a sample seawater storage tank and a standard seawater storage tank, and the output is connected with the inlet of the conductive cell via the peristaltic pump and the spiral coil; two current electrodes and two voltage electrodes are arranged in the conductive cell, and the current electrodes are nanoscale platinized composite oxide electrodes;the voltage electrodes are silver/silver chloride reference electrodes; and the detection control device adopts the digital orthogonal phase-locked amplification technology, and a phase-locked moduleis implemented by FPGA through digital programming. The method provided by the invention is convenient and quick to operate and high in test efficiency, and has relatively high-performance indexes.

The invention provides a method for evaluating the stability of an ocean electrode type conductivity sensor. The method comprises the following steps of: S1, preparing before an experiment, cleaning a sacrificial anode, a conductivity sensor and related instruments, and adjusting an experimental environment to ensure the accuracy of an experimental result; S2, testing conductivity values measured by the conductivity sensor at different temperatures by changing the temperature; S3, placing all seawater samples and a laboratory salinity meter in a salinity measurement laboratory, placing the seawater samples and the laboratory salinity meter at a constant temperature for a period of time, measuring the standard salinity of the seawater samples, calculating the standard salinity value, and calculating the standard conductivity value according to the standard temperature value; and S4, calculating the conductivity stability of the conductivity sensor according to the conductivity value measured by the conductivity sensor and the standard conductivity value. According to the evaluation method, the stability index of the ocean electrode type conductivity sensor can be reasonably, truly and effectively evaluated, and the industry blank of the method is filled.

The invention relates to a multi-channel salinity online measuring system, belonging to the technical field of automatic detection. The automatic measuring system capable of simultaneously measuring multi-point salinity comprises a sinusoidal signal generating circuit, a channel selection circuit, measuring electrodes, a signal collection conversion circuit, a microcontroller circuit, a remote communication circuit and computer application software. Full-wave sampling is carried out on measuring signals, and the area of a region encapsulated by the wave period is derived by a microcontroller and is in direct proportion to the salinity to realize high-precision salinity measurement. Multi-point salinity measurement is realized by the unique channel selection circuit, the measuring signal is remotely transferred by the remote communication circuit, data and drawing curves are automatically stored by the application software, and the influence on the flow field of a fluid to be measured is greatly lessened by the designed ultrafine measuring electrodes. The multi-point salinity measuring system has low cost and high precision and can be widely applied to scientific research and experiments.

The invention discloses a continuous observing system of dissolving nitrous oxide in a water body in a surface layer, and relates to monitoring equipment of greenhouse gases. The system is provided with a surface-layer water pump, filter equipment, temperature and salinity measurement equipment, a flow controller, a water vapor balancer, a temperature probe, a cold well, a gas pump, a waterproof electrode, an output spectrum detector of an off-axis integral chamber and a standard gas cylinder, wherein a water inlet of the surface-layer water pump is installed in water, a water outlet of the surface-layer water pump is connected with an inlet of the filter equipment, the outlet of the filter equipment is connected with the temperature and salinity measurement equipment, the outlet of the temperature and salinity measurement equipment is connected with the inlet of the flow controller, the outlet of the flow controller is connected with the water vapor balancer, an air outlet arranged at the upper part of the water vapor balancer is connected with the inlet of the cold well, the temperature probe is arranged in the water vapor balancer, the outlet of the cold well is connected with the inlet of the gas pump, the outlet of the gas pump is connected with the waterproof electrode, the outlet of the waterproof electrode is connected with the inlet of the detector and the outlet of the standard gas cylinder, the output end of the detector is connected with an auxiliary balancer which is arranged at the bottom in the water vapor balancer, and a wastewater outlet is formed at the bottom of the water vapor balancer.

The invention discloses a sewage feature evaluating and insulator equipping method for coastal areas. The method comprises the following steps: firstly judging whether an area to be measured is a coastal area or not according to the field salinity and salinity threshold value of the area to be measured; when salinity measurement conditions are lacked, judging the distance between the area to be measured and a coastline according to topographical parameters of the area to be measured, so as to judge whether the area to be measured is the coastal area or not; judging whether the area to be measured is an urban or industrial area according to the distance between the area to be measured and the urban area or a pollution source; judging whether the area to be measured is a mountain forest or cultivation area according to the distance between the area to be measured and a forest region or a farmland; judging whether the area to be measured is a river or a lake land according to the distance between the area to be measured and a water area; and equipping insulators according to evaluation results. The method provided by the invention is applied to practical engineering, sewage features can be quickly estimated according to geographic features when external insulation work is carried out in areas lacking equivalent salt deposit density data, and then the types and insulation levels of the insulators are quickly determined.

The invention relates to a salinity meter with a suction pump protecting device, which comprises a salinity meter main body with a suction pump and a sump and is characterized by also comprising the suction pump protecting device, wherein the upper end of the suction pump protecting device is connected with the inlet end of the suction pump, while the lower end is inserted into the sump; a tubular body in the suction pump protecting device is divided into three cavities by a valve seat and a director from the top to bottom, namely the cavity wall side above the valve seat is provided with a safety valve communicated with the external atmosphere by means of an air inlet; the cavity wall side between the valve seat and the director is provided with an air inlet hole; and a floater is arranged in the cavity under the director, a valve rod passing through the director is fixed in the axial direction of the floater, and the top of the valve rod is provided with a valve head. The valve head prevents waste liquor from entering the suction pump along with the rise of the liquor level. The salinity meter has simple process, eliminates corrosion even burning of the suction pump caused by ambient environment and improper human operation, ensures the continuity and stability of field salinity measurement, prolongs the service life and reduces the maintenance charge.

The invention discloses an intelligent fish tank cloud hosting system. A intelligent fish tank comprises a fish tank processer, a water quality sensor and a water quality adjustment mechanism corresponding to the water quality sensor, further comprises a cloud server and a smart phone and sends water quality parameters detected by the water quality sensor to the cloud server through a communication module; the smart phone is provided with a fish culture parameter setting module; the cloud server is provided with the following function modules of a fish culture parameter storage module for storing fish culture parameters uploaded by users' smart phones, a water quality analysis module for analyzing water quality conditions according to the water quality parameters uploaded by the intelligent fish tank and a water quality adjustment module for calculating out a water quality adjustment scheme according to the water quality conditions and the fish culture parameters and sending the water quality adjustment scheme to the intelligent fish tank. The invention further discloses a water quality adjustment method. The adjustment method comprises the steps of collecting a PH value and a salinity measurement value, comprehensively considering the mutual influence between PH value adjustment and salinity adjustment, and preferentially adjusting the PH value and then adjusting the salinity value after the PH value reaches an equilibrium state.

The invention discloses a seawater salinity and temperature detection device based on double-bend long-period fiber gratings and a use method. A measurement sensing part of the seawater salinity and temperature detection device comprises three LPFGs, a traction rope, three pulleys, a weight, a floating substance, a seawater solution and a seawater container; the LPFG signal demodulation part comprises an ASE broadband light source, an F-P filter, an optical splitter, a photoelectric detector, a signal conditioning circuit, an ADC acquisition module, an FPGA and the like. According to the principle that floating substances have different draught depths in seawater with different salinity, original contact type refractive index measurement is changed into non-contact type bending measurement, so that the sensitivity of seawater salinity measurement is improved; on the basis of double LPFGs, a temperature compensation sensor is provided while the bending variation is detected; a temperature sensor based on LPFG is added to realize simultaneous measurement of seawater salinity and temperature; the FPGA and the F-P filter are utilized to complete demodulation of an LPFG signal, and the problem that a spectrometer is inconvenient to carry is solved. The device is simple in structure and convenient to carry, and can effectively improve the seawater salinity, the temperature sensitivity and the measurement precision.

The invention discloses a three-dimensional positioning device for an underwater high-pressure water dirt removing nozzle which comprises a variable-length water gun, a high-pressure water nozzle fixed to the front end of a variable-length water gun barrel through a nozzle fast locking device and a high-pressure water inlet pipe connected to the rear end of the gun barrel, and further comprises an underwater sonar 3D positioning unit arranged on a gun body, wherein the gun barrel is fixed to the gun body through a water gun fast locking device. The underwater sonar 3D positioning unit comprises a sonar signal generator, a power amplifier, a sonar with one transmitting unit and three receiving units distributed along the circumference distributed at equal intervals, a signal amplifier, a distance recognition and correction module, a temperature and salinity measurement module and a warning device, all of which are in circuit connection. By means of three-dimensional positioning device for the underwater high-pressure water dirt removing nozzle, the positioning capability and the work efficiency of the underwater high-pressure dirt removing nozzle are greatly improved through a sonar 3D positioning manner, dirt removing energy consumption is reduced, the labor intensity is lowered, the problem that the work efficiency is low due to muddy water blind sight is effectively solved, and obvious advantages are achieved in the aspects of underwater dirt removing work efficiency and work accuracy.

The invention relates to a sea water temperature and salinity information time sequence prediction method based on shipborne CTD measurement data. The method comprises the following steps: collectingsea water temperature and conductivity data, and calculating salinity measurement data based on the measured conductivity information so as to obtain original temperature and salinity data; preprocessing original temperature and salinity data collected by a shipborne CTD, wherein the preprocessing process comprises interpolation, filtering and screening so as to obtain time sequence information conforming to a calculation standard; dividing the preprocessed data into time information and attribute information including temperature and salinity, and performing fuzzy rule division on the time information; acquiring a new membership function after threshold segmentation, performing sequence alignment on attribute information and time information after fuzzy segmentation to establish a new time sequence data set, and constructing the new membership data set by using the part of sequence information as a new fuzzy sequence number; designing a long-term and short-term memory neural network prediction model, setting a loss function, and training and establishing the prediction model by using the training set.

The invention provides a method for measuring salinity of salted mustard. The technical problem that the digital measurement of the salinity of the mustard in the salted salinity production and processing process cannot be realized is solved. According to the method, after the mustard dewatering, a mustard sample is weighed; then, distilled water is added for dilution; the mustard is processed into the mustard juice by a food processor; finally, the mustard juice is subjected to salinity measurement by using an electric conductivity instrument; the salinity of the mustard can be precisely controlled. The problem that the digital measurement of the salinity of the mustard cannot be realized is solved; the salinity measurement of the mustard realizes the datamation; the precision is high; the value can be accurate to ten thousandth; the problem of unstable salinity due to the mouthfeel taste relying of the salinity of mustard is solved.

The invention discloses a device for measuring seawater salinity in a regional range. The system comprises a Beidou satellite, a land data processing chamber built on a land, a base installed on a seabed, a tower column fixedly connected to a top of the base, a wind driven generator fixedly installed at a top end of the tower column, and a bearing platform fixedly connected to a middle of the tower column. An offshore data processing chamber is built on the bearing platform. The invention relates to the technical field of seawater salinity measurement. The invention discloses the device for measuring seawater salinity in the regional range, the seawater salinity in a far-end range of the bearing platform is detected, the corresponding sea area salinity can be flexibly controlled, extendedand monitored according to the condition of a monitored sea area, the salinity of a sea area with a small range is monitored, the monitored area is expanded on the structural size of the designed andbuilt bearing platform and is adjusted according to the regional range of the sea area monitored in real time, and the application range of salinity monitoring equipment is greatly expanded.