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115 results about "Potentiostat" patented technology

A potentiostat is the electronic hardware required to control a three electrode cell and run most electroanalytical experiments. A Bipotentiostat and polypotentiostat are potentiostats capable of controlling two working electrodes and more than two working electrodes, respectively.

Fourier analysis spectroscopy for monitoring tissue impedance changes and treatment outcome during electroporation-based-therapies

Electroporation-based therapies (EBTs) employ high voltage pulsed electric fields (PEFs) to permeabilize tumor tissue, resulting in changes in passive electrical properties detectable using electrical impedance spectroscopy (EIS). Currently, commercial potentiostats for EIS are limited by impedance spectrum acquisition time (˜10 s); this timeframe is much larger than pulse periods used with EBTs (˜1 s). Fourier Analysis SpecTroscopy (FAST) is introduced as a methodology for monitoring tissue inter-burst impedance (diagnostic FAST) and intra-burst impedance (therapeutic FAST) during EBTs. FAST is a rapid-capture (<<1 s) technique which enables monitoring of inter-burst and intra-burst impedance during EBTs in real-time. FAST identified a frequency which delineates thermal effects from electroporation effects in measured impedance. Significance: FAST demonstrates the potential to perform EIS, in addition to intra-burst impedance spectroscopy, using existing pulse generator topologies.
Owner:ANGIODYNAMICS INC +1

Online monitoring method and system for cathode protection corrosion rate of buried pipeline

The invention belongs to the technical field of buried pipeline corrosion monitoring, and provides a buried pipeline cathode protection corrosion rate on-line monitoring method and system, and the method comprises the steps: laying a multi-dimensional cooperative monitoring sensor array, collecting sensor data, evaluating the health state of a buried pipeline, and if the buried pipeline is in a healthy state, determining whether the buried pipeline is in a normal state or not; the method comprises the steps that a monitoring area is divided into a plurality of corrosion analysis units in a meshing mode, the corrosion analysis units conduct corrosion rate modeling, historical corrosion rate sequences of the corrosion analysis units are sorted, a multi-layer LSTM network model is trained to predict the corrosion rate, and a predicted corrosion rate sequence is obtained; and estimating the end point predicted wall thickness of the buried pipeline in each corrosion analysis unit in the prediction time period and analyzing the dispersion, if the dispersion is high, screening the risk corrosion unit, analyzing the end point predicted wall thickness of the risk corrosion unit or the corrosion analysis unit, judging whether to trigger the regulation and control of the constant potential rectifier, and if the regulation and control of the constant potential rectifier are triggered, judging whether to trigger the control of the constant potential rectifier. And if so, regulating and controlling the output current of the constant potential rectifier.
Owner:HANGZHOU HUAMAO INTELLIGENT TECH CO LTD

Potentiostat-based electrochemical sensor detection device and system including same

Provided is a potentiostat-based electrochemical sensor detection device. The device comprises: a digital-to-analog converter (DAC) configured to receive a digital signal from a waveform generator and digital logic and output an analog signal corresponding to a reference voltage; a control amplifier (CA) configured to receive the analog signal corresponding to the reference voltage and apply the reference voltage to a reference electrode (RE); a gain-boosting current mirror configured to copy a sensor current of an electrochemical sensor and output a copied sensor current; a transimpedance amplifier configured to convert the copied sensor current into a voltage signal; a low-pass filter configured to block a high-frequency band signal component of the voltage signal; and an analog-to-digital converter (ADC) configured to perform digital signal processing on a signal having passed through the low-pass filter, wherein at least one of the gain-boosting current mirror and the transimpedance amplifier employs a dynamic element matching (DEM) technique using a plurality of choppers and a plurality of DEM clock signals.
Owner:KOREA ADVANCED INST OF SCI & TECH

Determining microbiological corrosion progression

Techniques for determining microbiological corrosion include flowing a mixed-phase wellbore fluid from at least one tank into a volume of a reactor tank of a microbiological corrosion reactor; controlling a multi-channel potentiostat coupled to a three-electrode cell assembly positioned in the volume, the three-electrode cell assembly including a working electrode, a counter electrode, and a reference electrode, where each of the working electrode, the counter electrode, and the reference electrode is positioned in the volume to contact the mixed-phase wellbore fluid; based on controlling the multi-channel potentiostat, activating the working electrode in the mixed-phase wellbore fluid in the volume; and determining, based on activating the working electrode, a corrosion rate of at least one of the working electrode or a target coupon positioned within the mixed-phase wellbore fluid in the volume.
Owner:SAUDI ARABIAN OIL CO

Sewage treatment equipment state supervision system

The invention discloses a sewage treatment equipment state supervision system, belongs to the technical field of sewage treatment, and solves the problems that the sewage contains reducing sulfides and competes with denitrifying bacteria for electron donors, so that the COD in an anoxic zone is sufficient, the nitrate reduction rate is low, a false carbon source sufficient trap with inhibited denitrification occurs, but the sulfide is easy to oxidize, and the potential safety hazard is caused. And a sampling detection result is distorted and is difficult to identify. According to the invention, sewage is measured in an anoxic zone through a probe interface module, under the scheduling of a time division control module, a constant potential rectifier module excites sulfide characteristic oxidation current in a DPV time period, a logarithmic current detection module captures a peak value and integrates a charge quantity, an impedance detection module measures phase offset in an EIS time period, a signal processing module fuses characteristic values, and a temperature compensation module eliminates errors. The reference electrode protection module ensures signal fidelity, outputs sulfide concentration and electron competition index, starts a dosing system when the concentration exceeds the limit, and prevents sampling oxidation distortion in the whole process.
Owner:SHAOXING HONGLI ENVIRONMENTAL PROTECTION TECH CO LTD

Method for cathode protection of natural gas pipeline

The invention discloses a method for cathode protection of a natural gas pipeline, and the method achieves the high-precision reasoning of the state of a target monitoring point through the spatial sequence coding and multi-scale hierarchical interaction of the data of a plurality of monitoring points along the line. Further calculating a proportionality coefficient between a reasoning value and a measured value to dynamically quantify the confidence coefficient of the input data; then, the input data confidence coefficient serves as a weight to directly participate in PID parameter modulation, so that a PID controller can conduct self-adaptive adjustment according to the current input data quality; and finally, the fine-tuned PID is used for generating an output instruction of the potentiostat, so that the optimal cathode protection effect and the optimal energy consumption efficiency are both considered. Through the mode, the capability of responding to noise interference and sudden abnormal events under on-site complex working conditions is remarkably enhanced, so that a more scientific, reasonable, energy-saving and efficient current control instruction is provided for the output of the potentiostat, and the optimal protection effect and the optimal energy consumption balance are realized.
Owner:ZHONGKE XINWEI SECURITY TECHNOLOGY (ZHEJIANG) CO LTD +1

Separation-free detection method for extracellular vesicle marker based on nanoparticle enhancement

The invention provides an extracellular vesicle marker separation-free detection method based on nanoparticle enhancement, and belongs to the technical field of detection methods, the method comprises the following steps: preparing gold nanoparticles with the surface modified with a first antibody, the first antibody being used for specific recognition of an extracellular vesicle surface marker; determining the particle size distribution of the gold nanoparticles by adopting a dynamic light scattering method, and determining the surface potentials and surface isoelectric points of the gold nanoparticles by adopting a potentiostat; adopting a transmission electron microscope to characterize the morphology of the screened gold nanoparticles; co-modifying polyethylene glycol molecules on the surfaces of the gold nanoparticles to form an anti-interference layer; mixing the gold nanoparticles with uniform morphology with a sample to be detected; adding a second antibody into the mixed system; distinguishing signals of the binding-state second antibody and the free-state second antibody through fluorescence lifetime analysis; preparing an extracellular vesicle standard substance, and obtaining a standard curve and a system response curve; the optimal detection condition is determined by solving the detection system optimization equation set, and separation-free detection is carried out.
Owner:QINGDAO RAISECARE BIOTECHNOLOGY CO LTD

Incubator integrated electrochemical analysis platform

The invention relates to an electrochemical analysis method and platform compatible with screen-printed electrodes (SPE) (27) and any potentiostat (2) designed for cell-based tests, enabling cells to maintain healthy proliferation while being shielded from external influences.
Owner:IZMIR BIYOTIP & GENOM MERKEZI +1

Electrochemical selective extraction process and device

The invention provides an electrochemical selective extraction process and device, and relates to the technical field of material extraction in the nuclear fuel circulation process, and the electrochemical selective extraction process comprises the following steps: respectively carrying out corrosion potential tests on an uncontaminated stainless steel sample and a stainless steel sample contaminated with nuclide; obtaining the corrosion potential a of the uncontaminated sample relative to the cathode and the corrosion potential b of the contaminated nuclide sample relative to the cathode; putting a to-be-treated metal workpiece of which the surface is adhered with a pollutant material into an anode basket of an electrochemical extraction device, and connecting the anode basket to an anode of a direct-current power supply or a potentiostat; mixing nitric acid, sodium nitrate, a corrosion inhibitor and a slow release agent to prepare an electrolyte; a cathode basket of the extraction device is connected with a negative electrode of a direct-current power supply or a potentiostat, an anode basket is nested in the cathode basket, and the anode basket and the cathode basket are jointly immersed in electrolyte for extraction. According to the method, pollutants adhering to the irregular metal surface are effectively removed and recycled, the extraction rate of contaminated metal nuclides reaches 99% or above, and the introduction amount of matrix elements is lower than 3500 ppm / g matrix.
Owner:RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND

Silicon carbide nanoparticles fibrous membrane for implantable glucose sensor integrated with chronoamperometric potentiostat

The present disclosure presents glucose monitoring systems and methods. One such system comprises a glucose monitoring sensor having at least a counter electrode, a reference electrode, and a working electrode; and a silicon-carbide-silicon-carbide-nanoparticles-electrospun-nanofibrous-membrane contacting the working electrode. The system further includes a glucose oxidase enzyme solution contacting the silicon-carbide-silicon-carbide-nanoparticles-electrospun-nanofibrous-membrane, wherein a conductive polymer membrane assists in binding the glucose oxidase enzyme composition with the silicon-carbide-silicon-carbide-nanoparticles-electrospun-nanofibrous-membrane. Other systems and methods are also provided.
Owner:UNIV OF SOUTH FLORIDA

Clinical Bedside Systems and Methods with Biosensors for Complex Care Patients

A clinical bedside system facilitates care for complex care patients. The system can include a medical device having a biosensor with an inert substrate and a working electrode, a counter electrode, and a reference electrode deposited thereon. The working electrode can have an antifouling membrane thereover to which a capture antibody is immobilized. The capture antibody can be configured to capture a biomarker between it and a detection antibody, thereby sandwiching the infection biomarker between the antibodies for a detectable redox reaction between an enzyme conjugated to the detection antibody and the working electrode. The counter electrode can complete completes an electrical circuit including the working electrode. The reference electrode can be operably connected to the electrical circuit. The reference electrode can be configured to provide a reference point against which changes in potential at the working electrode can be measured, for example, with a potentiostat.
Owner:BARD ACCESS SYSTEMS INC

CMOS-based low-power, low-noise potentiostat circuit and its integration with an ENFM-based glucose sensor

The present disclosure presents glucose sensing methods and systems. One such system comprises an electrospun-nanofibrous-membrane (ENFM)-based amperometric glucose sensor integrated on a silicon chip, in which the glucose sensor has a working electrode, a reference electrode, and a counter electrode, wherein the working electrode comprises an ENFM-based sensing electrode. The system further comprises a potentiostat circuit integrated on the silicon chip such that the potentiostat circuit comprises a voltage control unit to control a voltage difference between the working electrode and the reference electrode and a transimpedance amplifier to measure a current flow between the working electrode and the counter electrode, in which a strength of the current flow corresponds to an amount of glucose present in a sample of blood on the glucose sensor.
Owner:UNIV OF SOUTH FLORIDA

Modular potentiostat

The modular potentiostat comprises an electric control main body and a heat dissipation module which are detachably installed, a normally-closed assembly is arranged at the bottom of the inner side of the electric control main body, and when the heat dissipation module is installed at the bottom of the electric control main body, the top of the heat dissipation module is suitable for opening the normally-closed assembly in a jacking mode; the electric control main body is communicated with the space in the heat dissipation module; and after the heat dissipation module is detached, the normally-closed assembly restores the closed state. The constant potential rectifier is disassembled into two main parts, so that convenience is provided for carrying, mounting and other scenes of the constant potential rectifier; meanwhile, due to the modular design, dust easily permeates into openings of the electric control main body and the heat dissipation module, through the design of the normally-closed assembly, only after the heat dissipation module is installed, the normally-closed assembly in the electric control main body can open space communication from the bottom of the electric control main body to an inner cavity of the heat dissipation module, and therefore dust is prevented from entering the electric control main body when the electric control main body is not used.
Owner:宁波众翮科技有限公司

Electrochemical method for detection, identification, and quantification of analytes, and equipment to perform said method

An electrochemical method for detecting, identifying, and quantifying ions and nutrients dissolved in water through voltammetry, and equipment to carry out the method, including: a preparation / placement stage of a sensor, with a reference electrode, working electrode, and counter electrode, in a potentiostat; a stage for contacting a sample or analysis solution containing the analyte with the sensor; a stage for applying, controlled via software from a computer system, electrical stimulation to the sample through Cyclic Voltammetry, Normal Pulse Voltammetry, Differential Pulse Voltammetry, or Square Wave Voltammetry, with a step potential and pulse amplitude range between −3,000 mV and 3,000 mV; and a stage for characterizing one or more analytes based on at least one measurement of the signals resulting from the oxidation-reduction of the analyte(s).
Owner:BLUEMING S L U

Wired implantable monolithic integrated sensor circuit

There is provided a glucose sensor system comprising: a transmitter (2) for containing a battery (212), the transmitter being for placement on top of patient skin; a transcutaneous connector (3) comprising at least one conductive path; and an implantable monolithic integrated circuit (I) for placement beneath the patient skin, wherein the implantable monolithic integrated circuit comprises a potentiostat and an electrochemical sensing element; wherein the potentiostat is electrically coupled to the transmitter (2) via the transcutaneous connector (3), and the electrochemical sensing element is configured to sense glucose concentration and generate an electrical signal representative of the glucose concentration, and wherein the potentiostat is electrically connected to the electrochemical sensing element.
Owner:MUJEEB U RAHMAN MUHAMMAD +2

Portable detection device and method for total discharge amount of water pollutants

The invention belongs to the technical field of water environment detection, and particularly relates to a portable detection device and method for the total discharge amount of water pollutants. The portable detection device at least comprises a three-electrode sensor module, a potentiostat module, an analog-to-digital conversion module, a microcontroller, a peripheral circuit of the microcontroller, a Bluetooth module and a power module, and the three-electrode sensor module comprises a working electrode coated with a tungsten oxide film, a reference electrode and a counter electrode; the constant potential rectifier comprises at least two electrode channels, is connected with the microcontroller and the analog-to-digital conversion module and is used for controlling voltage to detect hydrology and water quality parameters; and the Bluetooth module is used for being paired with intelligent equipment to transmit data. The portable water environment detection device and the hydrology and water quality synchronous detection method can be provided, the problem that scattered and small drain outlets cannot be detected is effectively solved, and the detection device is provided for real-time online evaluation of the total discharge amount of water pollutants.
Owner:CHINA JILIANG UNIV

Temperature-controlled stress electrochemical metal hydrogen permeation testing device and testing method

This invention relates to a temperature-controlled stress electrochemical metal hydrogen permeation testing device and method. The testing device includes a hydrogen permeation electrolytic cell, a hydrogen efflux electrolytic cell, a first temperature control mechanism, a second temperature control mechanism, a tensile testing machine, a potentiostat, an auxiliary electrode, a reference electrode, and a working electrode. The hydrogen permeation electrolytic cell is equipped with a first temperature control mechanism for controlling the temperature of the hydrogen permeation electrolytic cell, and the hydrogen efflux electrolytic cell is equipped with a second temperature control mechanism for controlling the temperature of the hydrogen efflux electrolytic cell. The sidewalls of the hydrogen permeation electrolytic cell and the hydrogen efflux electrolytic cell are respectively provided with a first connecting pipe and a second connecting pipe. Both the hydrogen permeation electrolytic cell and the hydrogen efflux electrolytic cell are equipped with an auxiliary electrode and a reference electrode. The two ends of the working electrode are respectively connected to the tensile testing machine. The working electrode, the reference electrode, and the auxiliary electrode are respectively connected to the potentiostat. A sample is welded onto the working electrode. The hydrogen-filled surface and the hydrogen-effluxed surface of the sample are sealed to the first connecting pipe and the second connecting pipe through sealing gaskets.
Owner:CHINA NAT PETROLEUM CORP +1

Electrospun nanofiber-based electro-chemical sensing system

PCT designated stageWO2025178985A1Material electrochemical variablesElectrospun nanofiberPolymer solution
A method for detecting hazardous materials using an electro chemical sensor system by electrospinning a polymer solution to produce a dissolvable nanofiber mesh and collecting contaminant particles on the nanofiber mesh by exposing the nanofiber mesh to an aerosol containing contaminant particles. The electro chemical sensor system comprises an electrochemical cell connected to a potentiostat. The electrochemical cell comprises a working electrode comprised of a nanofiber membrane and a reference electrode.
Owner:UNIVERSITY OF CENTRAL OKLAHOMA

A buried pipeline stray current anode transient interference corrosion monitoring device and testing method

The present invention discloses a buried pipeline stray current anode transient interference corrosion monitoring device and a testing method, relating to the technical field of stray current interference corrosion monitoring. The device comprises an experimental box, an experimental medium, a transient interference system and an interference testing system. The transient interference system comprises a constant potential instrument, a switching controller, a metal electrode bundle, an auxiliary electrode group and a reference electrode. The output value and output cycle of the constant potential instrument are adjusted to simulate the interference intensity and interference frequency of cathodic protection and stray current. The buried pipeline stray current anode transient interference corrosion monitoring device and the testing method of the present invention utilize a metal electrode bundle to realize the monitoring and evaluation function of the transient corrosion effect of the anode transient interference on the pipeline. The current distribution on the surface of each metal electrode is scanned by program control to characterize the local corrosion characteristics of the pipeline. The method is more comprehensive and systematic than traditional testing methods, and the data obtained is more valuable for reference.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Current control method for constant potential rectifier of integrated impressed current cathodic protection system

The invention discloses a current control method for a potentiostat of an integrated impressed current cathodic protection system, and the method comprises the steps: controlling each auxiliary anode to output different current values in sequence in a time-sharing manner, and measuring the potential value of each reference electrode; calculating a mathematical coupling function of the auxiliary anode current and the reference potential variation through polynomial fitting; establishing a mathematical model between the potential of each reference electrode and the current of the auxiliary anode, and calculating a predicted potential value of the reference electrode; solving the current of each auxiliary anode by using a particle swarm optimization algorithm according to the predicted potential value of the reference electrode and the target optimization function; solving the proportion of the current of each auxiliary anode relative to the total protection current; the constant potential rectifier automatically distributes current to each auxiliary anode according to the proportion relation; the invention further discloses a corresponding control system. The integrated impressed current cathodic protection system can adjust the optimal protection strategy in real time in different marine environments; the effects of uniform potential distribution of the ship body and small protection current are achieved.
Owner:NAVAL UNIV OF ENG PLA

Detachable screw rod type hoist screw rod protection device

The invention provides a detachable screw protection device for a screw hoist. The detachable screw protection device comprises a small potentiostat and a protection assembly, the protection assembly is arranged at the top of the screw hoist and comprises a protection cover, a fixed anode and a cathode electric brush, the fixed anode and the cathode electric brush are both arranged outside a screw and matched with each other to form cathode protection on the screw, the fixed anode is connected with an anode of the small potentiostat through a cable, and the cathode electric brush is connected with the cathode of the small potentiostat through a cable. And the cathode brush is connected with the cathode of the small-sized potentiostat. By arranging the insulating sleeve, the protective cover, the cathode electric brush, the fixed anode, the small-sized potentiostat and other components, the protective cover can simply protect the screw rod, and meanwhile, the cathode electric brush, the fixed anode and the small-sized potentiostat are matched with one another to form cathode protection current to protect the screw rod.
Owner:CHANGJIANG INT HYDRO ENG CO LTD +1

Magnetic bead elisa detector device and methods of use thereof

Provided are systems, cartridges, devices and methods for detecting a target analyte in a test sample. The system employs a multitude of magnetic sources for moving magnetic beads in a sequential movement through various portions of e.g. a cartridge or strip, such as from one or more hybridization portions, through one or more washing portions, and to a redox portion. The system employs an electrode set and a potentiostat for performing amperometry to obtain an electrochemical measurement based on conversion of a redox active molecule. Also provided are methods for detecting a target analyte using the systems, and cartridges and strips for use in the system or a device of the system.
Owner:CARDIAI TECH LTD

A digital constant potential device based on linearity calibration technology

The application discloses a digital constant potentiostat based on linearity calibration technology, comprising a quantizer, a control logic module, a current domain digital-to-analog converter, an oscillator and a frequency mixer, which constitutes a digital closed loop circuit with an electrochemical sensor, and realizes constant potential difference between a working electrode and a reference electrode of the electrochemical sensor and sensing current size detection between the working electrode and a counter electrode through negative feedback regulation of the digital closed loop circuit, so that a greater sensing current detection dynamic range is realized under extremely low power consumption, the differential current domain digital-to-analog converter is used to quantitatively transmit the linearity characteristics of the sensing current in the form of frequency while converting the sensing current into a digital code word, so as to realize linearity calibration of the mapping relationship between the detected sensing current size and the output digital control code word, thereby realizing high linearity sensing current detection under extremely low power consumption.
Owner:ZHEJIANG UNIV

Corrosion test system

The invention relates to the technical field of corrosion test devices, and discloses a corrosion test system which comprises a support frame, a box body, a corrosion plate, a water supply and drainage device, a water storage device, a fixing assembly, an electrode group, a water injection device, a constant potential rectifier and a controller. The box body and the corrosion plate are arranged on the supporting frame, the corrosion plate is located in the box body, and the water supply and drainage device is used for water inflow and drainage of the box body. The water storage device, the fixing assembly, the electrode group and the water injection device are all arranged on the corrosion plate, the water storage device has a first working position and a second working position and can be switched between the first working position and the second working position, the fixing assembly is used for fixing a test piece, and the water injection device is used for injecting water into the water storage device. And the constant potential rectifier is electrically connected with the electrode group. The water supply and drainage device, the water storage device and the water injection device are in communication connection with the controller. According to the corrosion test system, the corrosion test efficiency can be improved, and the corrosion environment can be conveniently controlled.
Owner:GUANGZHOU NO 1 CONSTR ENG +1

Marine potentiostat control cabinet

The utility model provides a marine potentiostat control cabinet, which comprises a cabinet body provided with an accommodating space; the cabinet door is rotatably connected with the cabinet body, and the cabinet door covers the accommodating space; the control unit layer is arranged in the accommodating space and comprises a first transformer, a driving piece and a main control piece; the element layer is in circuit connection with the control unit layer, the element layer is arranged on the side, away from the cabinet door, of the control unit layer, and the element layer comprises a rectification module and a high-frequency conversion module; the heat dissipation layer is connected with the element layer, and the heat dissipation layer is arranged on the side, away from the control unit layer, of the element layer; the access end is arranged in the accommodating space and is used for accessing marine alternating current; wherein the control unit layer is used for controlling elements in the element layer to work, the element layer is used for converting marine alternating current into low-voltage direct current, and the heat dissipation layer is used for heat dissipation of the element layer. According to the utility model, the problem that similar marine potentiostat control cabinets in the prior art cannot stably and efficiently complete electric energy conversion and realize accurate control of the potential of a ship body is solved.
Owner:CSSC STARRY ENERGY SAVING TECH (SHANGHAI) CO LTD

In-situ treatment system and treatment method for groundwater pollution

The present invention discloses an in-situ treatment system for groundwater pollution and its treatment method, belonging to the technical field of groundwater remediation. The treatment system includes an outer well pipe of a circulation well, an inner well pipe of the circulation well, an anode combination device arranged on the outer wall of the inner well pipe of the circulation well, a reference electrode combination device arranged on the outer wall of the inner well pipe of the circulation well, an aeration head arranged in the inner well pipe of the circulation well, an activated carbon electrode box arranged on the inner well pipe of the circulation well, a gas flow meter arranged on the ground, an air compressor arranged on the ground, an integrated activated carbon adsorption box arranged on the ground, and a potentiostat arranged on the ground. By designing different electrodes and adding ferrous sulfate heptahydrate, an electro-Fenton reaction is formed in the well, and strongly oxidizing hydroxyl radicals are generated by the reaction, thereby degrading organic pollution. By setting the well body as the cathode and applying an external current for cathodic protection, the service life of the iron circulation well is extended.
Owner:SUZHOU QIANXING ENVIRONMENTAL ENG CO LTD

Circuit breaker, pipeline cathode protection control method, system, medium and equipment

The present invention belongs to the field of circuit control technology, and in particular, relates to a protection control method, system, medium and equipment for circuit breakers and pipeline cathodes. The synchronous circuit breaker includes: a first contactor, a second contactor, a third contactor, a fourth contactor, a fifth contactor and a resistor, the fifth contactor is connected in parallel with an external signal device, one end of the first contactor and the second contactor is connected to the positive pole of a constant potential instrument, the other end of the first contactor is connected to a section of the resistor, the other end of the resistor is connected to the other end of the third contactor, the other end of the second contactor is connected to the anode, one end of the third contactor is connected to one end of the fourth contactor and is connected to the negative pole of the constant potential instrument, and the other end of the fourth contactor is connected to the pipeline. Through the present invention, the cathode protection power-off potential test function can be achieved without repeated disassembly, the cost is low, the use is convenient, it is compatible with various types of constant potential instruments, and the problem of current shock is solved.
Owner:PIPECHINA SOUTH CHINA CO +1

A system and method for controlling internal corrosion in a gathering pipeline

A gathering pipeline internal corrosion control system and a control method. The gathering pipeline internal corrosion control system comprises: a pipeline network main body, including a gathering trunk line and a station internal collecting pipe with an anticorrosion insulation layer on the inner surface, the output end of the gathering trunk line is in electrical communication with the station internal collecting pipe, the station internal collecting pipe is provided with an electrical connection area, the pipeline network main body is electrically connected with the medium transported in the station internal collecting pipe through the electrical connection area; an auxiliary anode is arranged inside the gathering trunk line; a reference electrode is arranged inside the station internal collecting pipe; a connecting piece is arranged at the end of the pipeline network main body and is arranged to electrically isolate the pipeline network main body and the butt joint pipeline; and a constant potential instrument has an anode connection part, a cathode connection part, a zero connection part and a reference connection part, the anode connection part is electrically connected with the auxiliary anode, the cathode connection part and the zero connection part are both electrically connected with the pipeline network main body, and the reference connection part is electrically connected with the reference electrode. The gathering pipeline internal corrosion control system can solve the problem of accelerated corrosion perforation of the pipeline network main body caused by the failure of the internal coating / inner plating layer.
Owner:PETROCHINA CO LTD

An integrated microfluidic portable sensor air bacteria electrostatic collection and real-time monitoring system and method

The application discloses an air bacterial electrostatic collection and real-time monitoring system and method integrated with a microfluidic portable sensor, and belongs to the technical field of environmental monitoring, and comprises an aerosol sampling module, a microfluidic processing module, an electrochemical sensing module and a portable constant potential instrument module. Bacteria aerosols in the ambient air are charged by corona discharge to realize efficient enrichment and collection; the enriched liquid sample is sent into the microfluidic processing module and flows through a sensing electrode modified with CuFeCoPBA@MoS2 nano composite material, polydopamine and concanavalin A. Target bacteria are combined with the concanavalin A on the surface of the electrode in a broad-spectrum specific manner, the interface electron transfer is hindered, the portable constant potential instrument collects the attenuation change of differential pulse voltammetry electrochemical signals, and rapid quantitative detection of the concentration of air bacteria is completed. The application integrates efficient air aerosol collection and portable biosensing, and can realize one-step on-site capture and detection of air pathogens.
Owner:CENT SOUTH UNIV

Monitoring and monitoring method of chromium-free anodization sealing treatment

The present application relates to monitoring and monitoring methods for chromium-free anodization sealing processes. A method for in-situ monitoring and optimization of a sealing process, the method comprising: sealing a surface of an anodized substrate, providing a test anodized substrate corresponding to the anodized substrate into the same sealing process as the anodized substrate, measuring an electrochemical surface potential of the test anodized substrate representative of a surface of the anodized component, collecting the electrochemical surface potential measurement data, analyzing the electrochemical surface potential measurement data, and identifying one or more performance indicators related to sealing quality and process parameters. The method can comprise: using information obtained from analyzing the electrochemical surface potential measurement data to optimize the sealing process, measuring the electrochemical surface potential using a potentiostat and a reference electrode, and measuring the electrochemical surface potential of the test anodized substrate representative of a surface of the anodized component.
Owner:THE BOEING CO