40 results about "Potentiometric sensor" patented technology

The invention discloses an intelligent control method for ceric ammonium nitrate precipitation process continuous production and application, and belongs to the field of intelligent production control, the intelligent control method comprises a hydrogen peroxide section intelligent control method and an ammonia water section intelligent control method, and the method comprises the steps that S1, a server receives V2; s2, a second potential sensor sends V2 ''; the server makes X2 = V2 '-V2, if the absolute value of X2 is within the threshold value, production continues, and if the absolute value of X2 is outside the threshold value, an alarm instruction is output; m1, the server receives the V3; and M2, the third potential sensor sends V3 ''to the server, the server makes X3 = V3''-V3, if the absolute value of X3 is within the threshold value, production continues, and if the absolute value of X3 is outside the threshold value, an alarm instruction is output. The reaction process is intelligently controlled, the process is adjusted in time, unqualified products are prevented from entering the next procedure, and stable quality of the whole procedure is guaranteed.

A force sensor includes an array substrate having a first surface provided with a plurality of array electrodes, a node provided on the array substrate and supplied with constant potential, a sensor layer facing the first surface, and a plurality of bypass wires provided on the array substrate and coupling the respective array electrodes to the node. The resistance value of each bypass wire is larger than the resistance value of the sensor layer.

The invention relates to the technical field of fuel cell membrane electrode voltage distribution testing, in particular to a fuel cell membrane electrode voltage distribution testing method and system, and the method comprises the steps: arranging a potential sensor array, and synchronously collecting an original voltage vector through the potential sensor array in the loading operation process of a fuel cell; a reference electrode is arranged in the non-reaction area, a stable reference signal is applied to the reference electrode, and a feedback signal of the reference electrode is collected after preset stable time is delayed; carrying out difference calculation on the feedback signal and the stable reference signal to obtain a system measurement drift distance; and performing joint calibration on the original voltage vector according to the system measurement drift amount and the spatial continuity constraint of the membrane electrode voltage distribution to obtain the voltage distribution vector of the fuel cell membrane electrode. And the authenticity and reliability of the voltage distribution data in the long-period test process of the fuel cell are ensured by continuously compensating the drift of the measurement precision.

The invention relates to the technical field of analysis and testing, in particular to a micro-area testing device with a movable probe, which comprises a detection table, a fixed frame, a fixed probe and a telescopic support, the fixed probe is used for stabilizing a test benchmark, and a four-direction moving mechanism is mounted on the telescopic support to drive the movable probe to move accurately. The four-direction moving mechanism is provided with a jumping mechanism which comprises a swing arm, an auxiliary arm and a laser instrument, the swing arm is controlled to swing through a driving assembly, transposition of a movable probe and the laser instrument is achieved, the probe jumps to a micro-area testing position, an optical microscope is arranged near the movable probe, a detection area is monitored in real time, and the detection accuracy is improved. The probe is integrated with a pH sensor and a potential sensor, and a pH sensitive film is arranged at a probe head. The device can flexibly detect micro-areas at different positions, the laser instrument firstly determines the position, the movable probe rapidly moves for detection, the optical microscope guarantees the detection accuracy, and the device is suitable for electrochemical detection of the micro-areas in multiple fields.

The invention discloses a nanosecond square wave transient impedance tower grounding defect on-line detection method and system. The method comprises the steps that distributed potential sensors are arranged on the periphery of a tower grounding body, and multi-channel synchronous acquisition is established; injecting a rectangular pulse signal into the grounding down lead, and superposing a damping sine component subjected to frequency response compensation; synchronously acquiring voltage and current responses, calculating a transient impedance differential ratio, a total harmonic distortion rate and a wavelet packet energy entropy, and judging a defect type according to a preset threshold value and a weighted fusion criterion; constructing and solving a ground potential field model, and positioning a defect position; the system is composed of a nanosecond square wave generator, a distributed potential sensor, a data acquisition and synchronization module, a signal analysis module and a ground potential tomography module, and sensor signals are subjected to differential transmission through a twisted-pair shielding cable to suppress interference. According to the invention, rapid and accurate identification and positioning of the grounding defect of the tower under the non-power-off condition are realized, the identification rate is high, and the positioning precision is excellent.

An electrochemical sensor system for analyzing body fluids (35), whether blood, sweat or urine, has the following features: a) the sensor system is a potentiometric sensor system, b) the sensor system has: first filament electrodes (10a) with a first functional substance (13a), second filament electrodes (10b) with a second functional substance (13b), optionally third filament electrodes (10c) with a third functional substance (13c), optionally fourth filament electrodes with a fourth functional substance, etc. until: optionally fifteenth filament electrodes with a fifteenth functional substance, c) the first functional substance (13a) and second functional substance (13b) and the optional further functional substances (13c) of the respective filament electrodes (10a, 10b, 10c) are each different in order to react to ions of a body fluid (35) with a specific potential, d) the respective filament electrodes (10a, 10b, 10c) are connected to a textile substrate (30) to be worn on the skin (36), e) the respective filament electrodes (10a, 10b, 10c) are connected to a computer for data analysis to determine the type of body fluid, f) the filament electrodes (10a, 10b, 10c) each have a filament (11) with a metallic outer surface, g) an adhesion promoter layer (12) made of SiOx is arranged on the metallic outer surface of the jacket, h) the adhesion promoter layer (12) made of SiOx has a thickness of 10 to 200 nm, i) the respective functional substance (13a, 13b, 13c) is chemically bonded to the adhesion promoter layer (12). The electrochemical sensor system can be used for medical monitoring of injured persons.

The present invention makes it possible to determine with high precision the film thickness of plating formed on a substrate in a plating device.　This plating device comprises: a plating tank for storing a plating solution; a substrate holder for holding a substrate; an anode arranged in the plating tank so as to face the substrate held by the substrate holder; a potential sensor arranged in the vicinity of the substrate held by the substrate holder and configured to measure the potential of the plating solution; a database for storing reference data regarding the distribution of the potential in the vicinity of the substrate, the reference data representing the potential distribution in the vicinity of the substrate in a predetermined reference state; a potential deviation calculation unit configured to calculate deviation of the potential distribution measured by the potential sensor with respect to the reference data; and a film thickness calculation unit configured to calculate deviation in the film thickness of the plating formed on the substrate from the film thickness of the plating in the reference state on the basis of the calculated deviation of the potential distribution.

An aerosol generating device includes an aerosol generator configured to generate aerosols, and a potentiometric sensor configured to generate a signal based on an electric potential difference that changes according e to changes in components of aerosols generated by the aerosol generator.

To provide an in vitro method for diagnosis, prognosis, risk assessment, monitoring, therapy guidance and / or therapy control of an infectious disease.SOLUTION: The invention relates to an in vitro method, comprising (a) providing a sample of a subject exhibiting clinical symptoms of and / or suspected of having an infection, (b) determining a level of D-lactate in said sample, (c) wherein the level of D-lactate is indicative of the presence of an infectious disease, characterized in that (d) the level of D-lactate in said sample is determined by means of an electrochemical sensing system (biosensor). In embodiments, the electrochemical sensing system comprises a potentiometric or an amperometric sensor. The electrochemical system comprises a D-lactate binding molecule, that is preferably immobilized on a detection (working) electrode. In embodiments, the detection electrode with the immobilized D-lactate binding molecule is comprised by a (disposable) test strip for insertion into a portable reader.SELECTED DRAWING: None

To provide an image formation apparatus capable of accurately estimating the surface potential of a photosensitive body without using a surface potential sensor, and also capable of suppressing generation of a fog toner.SOLUTION: The image formation apparatus includes: an image carrier; a charging device; a developing device; a developing voltage power supply; a charging voltage power supply; a current detection unit; and a control unit, the control unit being configured to execute a surface potential estimation process for estimating the surface potential of the image carrier, the control unit setting a developing current, which is obtained by applying a direct-current voltage Vdc to a developer carrier of the developing device so that a developing potential difference ΔV, which is the difference between the surface potential of the image carrier and the direct-current voltage Vdc, becomes a predetermined value while no charging voltage is applied to a charging member, as a reference current and executing the surface potential estimation process for estimating the surface potential of the image carrier as the sum of the direct-current voltage and the developing potential difference ΔV when the developing current detected by the current detection unit becomes equal to the reference current in a state where the charging voltage is applied to the charging member to charge the image carrier to a predetermined surface potential.SELECTED DRAWING: Figure 4

A method for manufacturing a sensor element for a potentiometric sensor includes: forming a glass layer made of an electrically insulating glass on a surface of a base body, in particular a base body made from an electrically insulating material; arranging a substrate made of copper or a copper-based alloy having a mass fraction of at least 60% copper on the glass layer; covering the substrate arranged on the glass layer with a glass body, for example a glass plate, made of an ion-selective, in particular pH-selective, glass; and subsequently controlling the temperature of the arrangement of the base body, substrate and glass body thus formed in such a way that the substrate is integrally bonded to the glass body made of the ion-selective glass and the glass layer on the surface of the base body.

The invention provides old building steel bar corrosion detection equipment, and relates to the technical field of steel bars, the old building steel bar corrosion detection equipment comprises a detection mechanism, the detection mechanism comprises a wallboard, the inner wall of the wallboard is provided with a steel bar body, the outer side of the steel bar body is provided with a potential sensor, and the outer side of the steel bar body is fixedly connected with the bottom end of the potential sensor; a second guide rod is arranged on one side of the potential sensor. The steel bar corrosion change is dynamic, in order to monitor the corrosion state of the steel bar body in real time, the steel bar body is connected into the wallboard, the potential sensor and the ultrasonic sensor are installed on the outer side of the steel bar body, then collected data are received by the first guide rod in a unified mode, and finally the steel bar corrosion state is monitored through the second guide rod. The transmission body transmits data to the detection equipment body, the potential sensor can measure the potential difference between the reinforcing steel bar and the surrounding environment, and the ultrasonic sensor can accurately measure the corrosion degree and range of the reinforcing steel bar in the reinforcing steel bar through ultrasonic waves.

The invention provides a membrane for a solid-state reference electrode, the membrane formed from a cross-linked zwitterionic polymeric matrix loaded with an inorganic salt, the inorganic salt being dispersed in the cross-linked zwitterionic polymer matrix. The invention also provides a solid-state reference electrode comprising a reference electrode with the membrane disposed on a surface of the reference electrode and a method of producing thereof. In addition, the invention provides a potentiometric sensor comprising the solid-state reference electrode and an ion-selective electrode.

The present invention relates to a human body dynamic potential tester based on a capacitive voltage divider, comprising: a potential sensor using a coaxial capacitive voltage divider for detecting a potential signal; a signal processing system disposed within the potential sensor for amplifying and filtering the potential signal to obtain a measured value; a data visualization module for visualizing the measured value; a main control module for compensating the measured value and controlling the human body dynamic potential tester as a whole; a power supply module for supplying power to the human body dynamic potential tester; and a housing enclosing the power supply device of the human body dynamic potential tester, the housing being grounded. The present invention is advantageous in eliminating system measurement errors caused by test distance, integrating a signal sampling module within a coaxial high-voltage voltage divider, and thereby reducing environmental noise introduced by signal lines. It is capable of accurately measuring electrostatic dynamic potential and monitoring human body potential in anti-static work areas such as electronic product and pyrotechnic production workshops.

The utility model provides a monitoring circuit of a tripping outlet loop of a relay protection device, relates to the field of relay protection of an electric power system, and solves the problems of real-time detection and early warning of hidden faults such as disconnection of the tripping outlet loop. The tripping outlet loop is composed of a protection device and a circuit breaker control cabinet which are connected with each other and form an electrical loop. Potential sensors are installed at the two ends of the protection device, the potential sensors are used for detecting potentials at the two ends of the protection device respectively, the potential sensors are connected with a potential monitoring unit, and the potential monitoring unit is connected to a monitoring system; a potential sensor RP1 is mounted on a wire between the positive electricity common end + KM and the positive electricity terminal CD; a potential sensor RP2 is mounted on a wire between the tripping outlet connecting piece CLP and the tripping outlet contact TJ: 2 terminal; according to the utility model, full-loop monitoring can be realized, disconnection faults of a tripping outlet loop of the protection device can be found in advance, and power failure range expansion caused by refusal of operation of a circuit breaker can be avoided.

The present disclosure relates to a sensor element for a potentiometric sensor, including a substrate and an ion-selective enamel layer arranged on the substrate. The substrate has at least one region which is electroconductively connected to the ion-selective enamel layer. The region of the substrate, which is electroconductively connected to the sensor layer, is made of a copper-based alloy having a mass fraction of at least 60% of copper.

The present invention relates to a polymer-sensitive membrane ion-selective electrode, specifically a detection method and device for detecting DNA and targets (such as antibiotics) with DNA as the recognition molecule. The sample to be detected contains DNA, DNA derivatives or targets with DNA as the recognition molecule. By using the potential sensor of the ion-exchange agent-doped polymer membrane ion-selective electrode, through the charge property of DNA or the interaction between the DNA recognition molecule and the target, the potential of the ion-exchange agent-doped polymer membrane electrode changes, thereby realizing the quantitative / qualitative detection of DNA, DNA derivatives or targets with DNA as the recognition molecule in the sample. In the present invention, DNA serves as both a recognition element and an indicating ion, with a wide application range and universality; the electrode has a rapid response and simple operation, and has good practical application prospects.

A power amplifier based reciprocal quantum logic (RQL) bias level sensor is used to measure and / or calibrate bias parameters of an AC bias signal and / or a DC bias signal supplied to an RQL circuit. The bias signal may include an output amplifier output bias current. The bias level sensor includes a stack of DC SQUIDs, with inputs supplied from the outputs of respective Josephson transmission lines (JTLs) that transformer-couple the SQUIDs. By stepping the relative strengths of the bias taps of the JTLs or the critical currents of the Josephson junctions in the DC SQUIDs, the output voltage signal of the bias level sensor can indicate whether the supplied bias value is an improved or optimized bias value when varied over a range. The outputs of two such bias level sensors driven by I and Q clocks can be compared to adjust the AC bias amplitude of the clocks. The relative clock phases can be adjusted as well.

A sensor system including a plurality of potentiometric sensors, wherein each of the potentiometric sensors has a sensor area of less than 1 square centimeter, wherein each of the potentiometric sensors comprises one working electrode, and wherein each one of the potentiometric sensors is galvanically separated from all other ones of the potentiometric sensors so as to avoid measurement crosstalk among the plurality of potentiometric sensors; a plurality of sensor control subunits, wherein each of the sensor control subunits is communicatively coupled to a particular corresponding one of the plurality of potentiometric sensors, and wherein each one of the sensor control subunits is galvanically separated from all other ones of the sensor control subunits so as to avoid measurement crosstalk among the plurality of sensor control subunits; and a main control unit communicatively coupled to each of the plurality of sensor control subunits.

A portable outdoor electric leakage detector provided by the present invention comprises a support, the support comprises a disc base and a vertical rod, the vertical rod is arranged at the center of the disc base, the vertical rod is of a hollow structure, four potential sensors are respectively arranged on supporting legs, in contact with the ground, of the disc base, and the adjacent potential sensors are spaced by 90 degrees. The main controller is connected with the four potential sensors through the hollow structure of the vertical rod and used for collecting detection signals of the four potential sensors and calculating the position of an electric leakage point according to the potential difference between the two pairs of centrosymmetric potential sensors. The equipotential line of the detection area is calculated through the two pairs of centrosymmetric potential sensors, the position of the electric leakage point is determined according to the equipotential line, automatic detection of the electric leakage point is achieved, the detection accuracy is high, and the electric shock risk is small.

The invention relates to the technical field of oil and gas storage and transportation, in particular to an oil and gas storage and transportation oil tank protection device. A composite anti-corrosion layer is arranged on the outer wall of the tank body; the intelligent monitoring module comprises a temperature sensor, a pressure sensor, a corrosion potential sensor and a combustible gas concentration sensor which are distributed inside and outside the tank body; the linkage protection unit comprises an automatic cooling system, a fireproof and explosion-proof assembly and an emergency pressure relief device which are electrically connected with the intelligent monitoring module; and the central control unit is used for receiving the real-time data of the intelligent monitoring module and controlling the operation of the linkage protection unit. Through multi-dimensional integration of composite corrosion prevention, intelligent monitoring, fire and explosion prevention and automatic cooling, the safety protection level of the oil tank is improved by 40% or above, the predicted service life is prolonged to 30 years or above, the composite corrosion prevention layer can effectively resist erosion of various corrosive media, and the intelligent monitoring module can find the abnormal state of the oil tank in real time.

The application discloses an intelligent control method for continuous production of a cerium ammonium nitrate precipitation process and application, belongs to the field of intelligent production control, and comprises a hydrogen peroxide section intelligent control method and an ammonia water section intelligent control method, and comprises the following steps: S1, a server receives V2; S2, a second potential sensor sends V2"; the server makes X2=V2"-V2, if the absolute value of X2 is within a threshold value, production continues, if the absolute value of X2 is outside the threshold value, an alarm instruction is output; M1, the server receives V3; M2, a third potential sensor sends V3" to the server, the server makes X3=V3"-V3, if the absolute value of X3 is within a threshold value, production continues, if the absolute value of X3 is outside the threshold value, an alarm instruction is output. The application intelligently controls a reaction process, adjusts a process in a timely manner, avoids unqualified products from entering a next process, and guarantees the quality stability of the whole process.

The present invention relates to a potentiometric anti-biofouling sensor, specifically to a renewable polymer membrane potentiometric anti-biofouling sensor modified with a magnetic anti-fouling functional material and its application. The polymer membrane potentiometric anti-biofouling sensor is composed of a disk electrode, a polymer sensitive membrane, and a magnetic material anti-fouling layer; the polymer membrane is coated on the surface of the conductive substrate of the disk electrode, and a magnetic material anti-fouling layer is self-assembled on the surface of the polymer membrane through the action of magnetic field force; among them, the disk electrode has magnetism. The renewable potentiometric anti-biofouling sensor modified with a magnetic anti-fouling functional material according to the present invention realizes the hindrance to biological attachment and biofilm formation by means of a magnetic anti-fouling functional material with super-hydrophilicity and bactericidal properties, and at the same time improves the anti-biofouling performance of the polymer membrane potentiometric sensor by virtue of the advantage that the magnetic anti-fouling layer is easy to update.

The present invention relates to ion selective membranes and the preparation thereof, such as magnesium ion selective membranes and the preparation thereof. In particular, the invention describes improved polymer blends for use in ion selective membranes. The invention furthermore relates to electrodes and potentiometric sensors comprising such membranes and the use thereof for determining ion concentrations in samples.

The invention relates to a design method of a field grinding type surface potential sensor, in particular to a design method of a field grinding type surface potential sensor working in high-density space charges. The invention aims to solve the problem that the electrostatic control performance is influenced by deviation of the detected surface potential of a traditional field grinding type surface potential sensor in a high-density space charge environment. The method comprises the following steps: firstly, designing a differential probe structure with a reverse-phase rotor and a double-sided induction electrode, and introducing reverse-phase current on the upper surface to realize self-compensation of interference; a mathematical model of the differential sensor is established, and interference and compensation current components are quantified; on the basis, a closed-loop control system model containing interference is established and analyzed, the stable condition of the system is derived, a design formula for compensating the cavity distance is deduced according to the stable condition, and it is ensured that the system works stably in the interference environment, and the surface potential is converged to zero. The invention belongs to the technical field of industrial electrostatic control.

The present invention relates to a method for producing a sensor element (1) for a potentiometric sensor (100), comprising: conditioning at least one region of a substrate (3) composed of copper or a copper-based alloy having a mass fraction of at least 60% of copper to produce an oxide layer comprising cuprous copper (Cu(I)), and applying an ion-selective, in particular pH-selective, enamel layer (7) at least onto the region of the substrate (3).

A device for monitoring the health state is made in a chip including a semiconductor die integrating an electric potential sensor and a cardiac parameter determination unit. The potential sensor is configured to detect potential variations on the body of a living being and associated with a heart rhythm and to generate a cardiac signal. The cardiac parameter determination unit is configured to receive the cardiac signal and determine cardiac parameters indicative of a health state. In particular, the cardiac parameter determination unit is configured to detect triggering events and to determine features of the cardiac signal in time windows defined by the triggering events. The die also integrates a decision unit, configured to receive the cardiac parameters and generate a health signal based on a comparison with threshold values. The cardiac parameters include heart rate and QRS-complex.

The present application relates to the technical field of fuel cell membrane electrode voltage distribution test, in particular to a kind of fuel cell membrane electrode voltage distribution test method and system, the method is through the layout potential sensor array, in the loading operation process of fuel cell, through potential sensor array synchronous acquisition original voltage vector;Reference electrode is laid in non-reaction zone, stable reference signal is applied to reference electrode, and feedback signal of reference electrode is collected after delay presetting stabilization time;Feedback signal and stable reference signal are obtained system measurement drift amount by difference calculation;According to the spatial continuity constraint of system measurement drift amount and membrane electrode voltage distribution, original voltage vector is jointly calibrated, and the voltage distribution vector of fuel cell membrane electrode is obtained.By continuously compensating the drift of measurement accuracy, the authenticity and reliability of the voltage distribution data during the long-period test of the fuel cell are ensured.

Disclosed is a device (100) for taking electrochemical measurements with a view to measuring physico-chemical quantities and / or concentrations of molecules in a solution (300), the device comprising: - a set (13) of sensors arranged on a carrier (11), the set comprising at least one amperometric sensor (134, 134a, 134b) and at least one OCP sensor (131, 131a, 131b, 132, 132a, 132b) for taking measurements of open-circuit potential, the amperometric sensor comprising a working electrode (1341, 1341a, 1341b), a reference electrode (1342, 1342a, 1342b) and a counter-electrode (1343, 1343a, 1343b), the OCP sensor comprising a reference electrode (1312, 1312a, 1312b, 1322, 1322a, 1322b) and a working electrode (1311, 1311a, 1311b, 1321, 1321a, 1321b); - an electronic device (10) for acquiring and processing measurement signals delivered by the sensors, the electronic device further comprising at least one circuit (103) for controlling the bias of the electrodes of the sensors.

A method for producing a sensor element for a potentiometric sensor includes conditioning at least one region of a substrate, which consists of copper or a copper-based alloy having a mass fraction of at least 60% of copper, for producing an oxide layer comprising monovalent copper (Cu(I)), and applying an ion-selective, in particular a pH-selective enamel layer at least onto the region of the substrate.