54 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.

A portable device that can be temporarily attached to a building's hose spigot or plumbing angle stop valves and the like, for the purposes of: (i) providing an uninterrupted supply of cool drinking water for pets; and (ii) ongoing health monitoring via alerts of pet hydration habits. In the preferred embodiment, the device claimed herein consists of the following as illustrated in FIGS. 1, 2, 3 and 4. Housing features an internal chamber containing cooling unit, tank, control unit, inlet pipe, outlet pipe and battery. User connects anterior end of hose onto inlet pipe via inlet coupler and posterior end of hose onto a building's plumbing system using spigot coupler or angle stop valve coupler. Power cord is then connected to a wall outlet. User adjusts level sensor or float to desired depth within bowl, which establishes the maximum desired water fill level. Spigot or angle stop valve is opened to pressurize device and fill tank. The device is powered on via control pad and appropriate operational modes of control unit are selected by user. Water flowing into device through inlet pipe enters and fills tank. Cooling unit chills water in tank; water in bowl is also chilled via cooling element. Control unit opens electric valve, which allows chilled water to flow from tank to bowl via outlet pipe. Water flow into bowl ceases automatically when level sensor detects that preset fill level has been reached. When an animal down draws water in bowl below preset height of level sensor, control unit opens electric valve. Chilled water enters bowl until it contacts level sensor, thereby signaling control unit to close electric valve. User may also use control pad to activate lights for safety or decorative purposes. In an alternate embodiment, low water level in bowl lowers float and float arm, thereby opening float valve so that chilled water can flow from tank and into bowl via outlet pipe. When water lifts float to maximum fill level of bowl, float valve closes and terminates water flow. When an animal draws water below preset level, bowl is replenished automatically. In either embodiment, a constant supply of water with a temperature below ambient temperature is automatically maintained. User can use a smart device to set operational mode of control unit and monitor hydration frequency and water temperature via WIFI connection. Device can use solar panels and rechargeable batteries for primary or emergency backup power.

The invention relates to the technical field of marine science, and provides a response speed testing device and method for a marine natural potential sensor, and the device comprises a box body which is located at the top of an installation space; the potential switching module is positioned below the ocean natural potential sensor; the voltage measurement module is connected with the marine natural potential sensor, and the voltage measurement module is used for collecting potential transition signals of the marine natural potential sensor and outputting response parameters of the marine natural potential sensor; the potential switching module comprises a power supply unit, a conductor array and a charge processing unit. The conductor array is adopted as a response source, and the reliability of response speed measurement of the marine natural potential sensor is effectively improved. The boron-doped diamond film with low background current and low adsorption is adopted, so that smaller capacitance and charge quantity are obtained, and the influence of charging and discharging on the potential change and the response speed measurement of the potential sensor is reduced.

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 present invention relates to a sensor element for a potentiometric sensor, comprising: a substrate and an ion-selective enamel layer arranged on the substrate, the substrate having at least one region electrically conductively connected to the ion-selective enamel layer, wherein the region of the substrate electrically conductively connected to the sensor layer is made of a copper-based alloy having a copper mass fraction of at least 60%.

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 provides a fuel cell potential distribution test device, which belongs to the field of fuel cell technology. The device includes: a membrane electrode, at least one potential sensor assembly located on the upper and lower surfaces of the membrane electrode; the potential sensor assembly is used to detect the potential distribution of the membrane electrode. The present invention sets the potential sensor assembly, and by adjusting the number, position and arrangement of the bridge and the potential sensor group, the cathode potential and the anode potential at any position of the membrane electrode can be tested simultaneously, and the potential test range is greatly improved; and the relative position of the potential sensor assembly is fixed, the test error is small, the accuracy is high, and the operation is stable; the present invention has high reliability, the reaction electrode assembly is located in the active area of ​​the membrane electrode, and there are sufficient water molecules to maintain the stable operation of the reaction electrode assembly.

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

Disclosed herein is an apparatus for measuring crevice formation having a housing, a working electrode, a crevice former within the housing, a counter electrode within the housing, and a reference electrode within the housing. The electrodes and crevice former have electrical connections outside the housing. The crevice former has a silicon wafer having a thin film potentiometric sensor and is positioned within 100 μm of a surface of a sample in electrical connection with the working electrode. The housing is filled with electrolyte and both electrical testing and X-ray computed microtomography are performed on the sample.

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 invention discloses a rapid test system and method for chloride ion content in a marine atmosphere environment, including a chloride ion detection chamber, a laser emission module, a photodetector, a potential sensor, a potential measuring element and an MCU microprocessor; the chloride ion detection chamber has an air inlet and an air outlet for the circulation of the marine atmosphere inside; the laser emission module emits laser into the chloride ion detection chamber; the photodetector receives the laser passing through the chloride ion detection chamber, and outputs a signal of the content of total salt particles in the marine atmosphere to the MCU microprocessor; the potential sensor contacts the marine atmosphere coming out of the air outlet to generate a response, and is electrically connected to the potential measuring element, and the response potential of the potential sensor is measured by the potential measuring element, and transmitted to the MCU microprocessor. The circuit structure of the device of the present invention is simple, and it is easy to obtain output data, and it can quickly obtain multi-parameter data reflecting the chloride ion content in the marine atmosphere, and further realize the test of the chloride ion content in the marine atmosphere.

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.

The invention belongs to the technical field of Kjeldahl determination. The efficient receiving reaction device comprises a receiving cup, a receiving cup cover, a stirring motor and a receiving cup base, the stirring motor is fixed to the receiving cup cover, a stirring rod of the stirring motor extends into the receiving cup, and the receiving cup is fixed in the receiving cup base; a receiving liquid inlet hole and a titration acid hole are formed in the receiving cup cover, a receiving liquid inlet pipe penetrates through the receiving liquid inlet hole and extends into the receiving cup, and a first connecting line is formed between the central point of the receiving liquid inlet hole and the central point of the receiving cup cover; the included angle between the acid titration hole and a second connecting line between the central point of the acid titration hole and the central point of the receiving cup cover is less than or equal to 90 degrees; no matter whether the stirring motor rotates clockwise or anticlockwise, the receiving liquid and the titration acid can be quickly mixed and reacted, so that the measurement fluctuation of the colorimetric sensor and the potential sensor is reduced, and the detection efficiency is improved.

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.

Various examples are provided related to a sensor (e.g., biosensor) for selective ion-detection in a sample. In one example, a potentiometric sensor includes a base; a working electrode (WE) set into the base; and a reference electrode (RE) set into the base adjacent to the working electrode. The working electrode includes a WE well filled with a WE solid-state material and the reference electrode includes a RE well, adjacent to the WE well, filled with a RE solid-state material. An example of a method for measuring a concentration of ions in a sample using the potentiometric sensor includes obtaining a biological sample; bringing the biological sample into contact with both the WE well and the RE well; and measuring the open circuit potential between the working electrode and the reference electrode. Also disclosed is a system comprising the disclosed sensor and a microfluidic device in fluid communication with the sensor.

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.