11 results about "Potentiometric sensor" patented technology

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.

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.

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 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 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.

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 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 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.

The invention discloses an all-solid-state copper ion selective electrode based on a polydimethylsiloxane and amorphous hollow ZnSnO3 composite material as a solid transfer layer, and a preparation method and application thereof, and belongs to the technical field of ion selective electrodes. The solid-state transfer layer covers the end face of the columnar conductive substrate, the copper ion selective membrane covers the solid-state transfer layer, and the solid-state transfer layer is made of polydimethylsiloxane and amorphous hollow ZnSnO3 composite materials. According to the invention, the polydimethylsiloxane for enhancing the hydrophobicity of the material and the amorphous hollow ZnSnO3 composite material with large specific surface area are combined to obtain the composite material for reducing the interface resistance and the water layer effect. The electrode can be applied to a potentiometric sensor for detecting Cu < 2 + >, has excellent detection limit, sensitivity and long-term stability as well as excellent hydrophobicity and anti-interference capability, and can still keep optimal detection performance under complex conditions.

This application discloses a charge simulation measurement device and method for a through-wall bushing. The charge simulation measurement device for the through-wall bushing includes: an insulating core sample for electrical connection to a power source; an experimental chamber for housing the insulating core sample; a grounding component electrically connected to and grounded to the insulating core sample, the grounding component dividing the space inside the experimental chamber into a first region and a second region distributed along the axial direction; a temperature field construction component, including a heating component and a sensor group, the heating component extending along the axial direction of the insulating core sample and capable of independent temperature control in each region, for forming a preset temperature gradient on the insulating core sample; and a charge measurement component, including a potential sensor and a driving mechanism, the driving mechanism for driving the potential sensor to generate relative motion along the axial direction and relative rotation around the axial direction with the insulating core sample, the potential sensor being capable of performing potential scanning measurements at different positions of the insulating core sample in the first region and the second region.

The invention belongs to the field of drug analysis and detection, and particularly relates to application of a potential sensor based on a polyaniline modified miniature two-electrode system to methylmalonic acid detection. In the potential sensor based on the polyaniline-modified miniature two-electrode system, polyaniline-loaded carbon fiber serves as a working electrode, an open-circuit potentiometric method is adopted for detecting methylmalonic acid, the sensor is particularly suitable for detecting methylmalonic acid in body fluid or excrement, pretreatment is not needed, detection is instant, rapid and accurate, the anti-interference capability is high, and the sensitivity is high. And a novel efficient and reliable analysis method is provided for detection of methylmalonic acid.