357 results about "Hydrogen sensor" patented technology

The invention provides a flexible palladium film hydrogen sensor and a preparation method thereof, the flexible palladium film hydrogen sensor is sequentially provided with a flexible substrate, a hydrogen sensitive sensing layer and a contact connection layer from bottom to top, and the contact connection layer is connected with a resistance measurement unit; and the hydrogen-sensitive sensing layer is a palladium or palladium alloy film with a conical micro-nano structure. The palladium or palladium alloy thin film with the conical micro-nano structure provides a hydrogen sensor conical surface micro-nano structure with a high specific surface area for the flexible palladium thin film hydrogen sensor, and the process that hydrogen is adsorbed, dissolved and diffused into the palladium or palladium alloy thin film is accelerated, so that the response speed of the sensor is increased; according to the hydrogen sensor, the flexible substrate is adopted, so that the hydrogen sensor can be conveniently arranged in various narrow spaces, and the applicability of the hydrogen sensor in various scenes is improved.

The invention relates to an optical fiber hydrogen sensor based on a silver film-nanowire hole array structure and a preparation method thereof in the field of photochemical sensors. The optical fiber hydrogen sensor comprises a multimode optical fiber, and a sensing area is formed on the multimode optical fiber; the sensing area is formed by stripping a coating layer with a preset length from the multimode optical fiber, thinning the optical fiber in the area, plating a silver film on the surface of the thinned optical fiber, and adsorbing a nanowire hole array structure which is sequentially and vertically arranged on the surface of the silver film in a liquid level self-assembly manner; the nanowire hole array is of a metal-medium-metal (MIM) structure, a gold-palladium nanowire array is arranged at the bottom, an intermediate medium layer is made of aluminum oxide, and a silver film with a hole array in any shape is arranged at the top. When light is transmitted to a sensing area from a fiber core of the multimode optical fiber, the light and a metal silver film can excite a surface plasmon resonance (SPR) effect, meanwhile, an MIM structure formed by a gold-palladium nanowire, an aluminum oxide dielectric layer and a porous silver film serves as an optical coupling antenna through a local surface plasmon resonance (LSPR) effect at the edge of a top hole, and the optical coupling antenna is used for transmitting the light to the sensing area. Light energy is efficiently converged and excited in an extremely bound gap plasmon (Gap Plasmon) in an aluminum oxide dielectric layer, so that far-unconventional electromagnetic field enhancement is generated in a sensing core area, and the sensitivity of the sensor is greatly improved.

The invention provides a hydrogen sensor with an ultrafast hydrogen response speed and a preparation method thereof, the hydrogen sensor comprises a silicon oxide substrate and a double-interdigital electrode structure, the double-interdigital electrode structure comprises a titanium electrode layer, a tungsten enhancement layer and a palladium sensitive layer; an interdigital electrode pattern is arranged on the silicon oxide substrate, the titanium electrode layer covers the interdigital electrode pattern, the tungsten enhancement layer covers a pin area and a bridge arm resistance area of a titanium electrode, the palladium sensitive layer covers the titanium electrode layer and corresponds to the position of the interdigital electrode pattern, and the titanium electrode layer is directly arranged on the silicon oxide substrate. The structure is simple, the titanium electrode serves as the bottom electrode, the sensitivity and mechanical stability of the sensor are improved, the tungsten enhancement layers are arranged in the titanium electrode pin area and the bridge arm resistor area, and the overall conductivity and mechanical strength are improved.

The invention belongs to the technical field of hydrogen detection sensing, and particularly relates to an optical fiber hydrogen sensor for detecting hydrogen in water. The optical fiber hydrogen sensor consists of a demodulator and a hydrogen-sensitive optical fiber, wherein the hydrogen-sensitive optical fiber consists of an optical fiber, a WO3 / Pt layer and an ePTFE hydrophobic breathable film from inside to outside, wherein the WO3 / Pt layer is coated outside the optical fiber, and the ePTFE hydrophobic breathable film is coated outside the WO3 / Pt layer. The optical fiber hydrogen sensor is small in size, and the defect that a traditional hydrogen sensor is not suitable for a narrow space in a small chamber of a water electrolysis hydrogen production tank is overcome. The problems of spectrum jitter and abnormal interference caused by the fact that a traditional optical fiber hydrogen sensor is affected by water in an electrolytic bath environment are solved through the hydrophobic breathable film. The hydrogen sensor disclosed by the invention provides a real-time and stable quantitative means for solving the problem that hydrogen concentration cannot be effectively measured due to mixing of hydrogen and oxygen in a small chamber, a water outlet and an oxygen outlet of a water electrolysis hydrogen production tank.

A method is disclosed for managing and safeguarding a battery environment. The method includes continuous monitoring of individual battery voltages in a battery room and automatic isolation of defective batteries, employing a controller-solenoid switch mechanism responsive to voltage abnormalities. The methodology accounts for the state of battery charging, invoking fan activation when charging occurs or hydrogen levels rise. Also disclosed is a system for managing a battery system in a battery room and isolating defective batteries. Enhanced system features include hydrogen sensors strategically placed throughout, including the ceiling, with outcome-driven fan operation and comprehensive notification mechanisms to inform on-site personnel of gas release locations, maintaining a secure and efficient battery room environment.

The invention discloses a hydrogen sensor calibration and calibration model training method and device, and belongs to the field of hydrogen concentration detection.The method comprises the steps that a plurality of electric signal data output by a hydrogen sensor and first hydrogen concentration data of the space where the hydrogen sensor is located when the hydrogen sensor outputs the electric signal data are collected; extracting feature data in the electric signal data; predicting corrected second hydrogen concentration data corresponding to the electric signal data according to the feature data; predicting a plurality of interference signals corresponding to the electric signal data according to the feature data; wherein each interference signal corresponds to one interference factor; according to the first hydrogen concentration data and the second hydrogen concentration data, prediction error loss is obtained, confrontation loss is obtained according to the interference signals, and finally parameters of the hydrogen sensor calibration model are optimized in combination with a preset weight parameter combination. Therefore, by implementing the application, the problem of low detection precision of the hydrogen sensor under a plurality of interference factors can be solved.

The invention discloses an auxiliary device for hydrogen production by water electrolysis, which relates to the technical field of hydrogen production by water electrolysis and is characterized by comprising a base frame, a water inlet pretreatment unit, an electrolysis unit, a gas-liquid separation and gas monitoring module and an intelligent operation regulation and control unit. The inlet water pretreatment unit is used for deeply purifying a water source through a multi-stage filtering device to produce deionized water meeting the electrolysis requirement; the electrolysis unit electrolyzes the purified water into a gas-liquid mixture of hydrogen, oxygen and water vapor; the gas-liquid separation and gas monitoring module adopts a vertical separation structure and a secondary separation system, and is combined with a hydrogen side oxygen sensor and an oxygen side hydrogen sensor to realize efficient gas-liquid separation and real-time gas purity monitoring; the intelligent operation regulation and control unit dynamically regulates electrolysis parameters and gas pipeline states based on monitoring data, and automatic closed-loop control is achieved. The device has the advantages of thorough water purification, high gas purity, safe and reliable operation, intelligent control and the like.

The invention discloses an optical fiber twinning controllable vernier hydrogen sensor and a detection method, and belongs to the technical field of optical fiber sensing, the optical fiber twinning controllable vernier hydrogen sensor comprises a single-mode optical fiber, a femtosecond laser direct writing grating, a Fabry-Perot interferometer and a Pd / WO3 hydrogen sensitive film; the single-mode optical fiber comprises an optical fiber core and an optical fiber cladding, the femtosecond laser direct writing grating is prepared in the optical fiber core, the Fabry-Perot interferometer is composed of a reflecting surface 1 and a reflecting surface 2 which are relatively parallel to each other, the Pd / WO3 hydrogen sensitive film is coated on the inner side of the reflecting surface 2, and the femtosecond laser direct writing grating and the Fabry-Perot interferometer are arranged in series; the optical path of the Fabry-Perot interferometer is modulated through the interaction of the Pd / WO3 hydrogen sensitive film and hydrogen, interference spectrum wavelength drift is triggered, temperature compensation is achieved in combination with the temperature response of the femtosecond laser direct writing grating, and hydrogen concentration sensing is completed. The method is suitable for hydrogen leakage detection in industrial environments, energy equipment and other scenes.

The invention discloses a high-sensitivity double Fabry-Perot interference hydrogen sensor resistant to temperature and humidity interference, and belongs to the technical field of optical fiber sensing. A modular integrated design is adopted, and the core comprises double Fabry-Perot interferometers which are connected in series and are respectively a temperature compensation unit FPI-1 and a hydrogen sensing unit FPI-2, and a matched software controllable vernier processing module; the FPI-1 realizes temperature real-time compensation by filling PDMS in an open microcavity, and the FPI-2 adopts a PDMS / Pd-WO3 composite material as a hydrogen sensitive layer, and has wide humidity range anti-interference capability through structural optimization; the weak hydrogen signal is amplified through Fourier transform filtering, sine function fitting, twin interference spectrum construction and vernier effect. According to the invention, precise detection of ultra-trace hydrogen in a complex temperature and humidity environment is realized, and the temperature and humidity interference resistance is high.

The invention relates to the technical field of hydrogen detection, in particular to a hydrogen detection and measured value correction method based on a hydrogen sensor, and the method comprises the following steps: analyzing the change trend of voltage data in an active unit at each moment and in a preset duration before the moment, and the correlation of the voltage data between the active unit and a reference unit; determining hydrogen purity responsivity; the hydrogen compensation confidence coefficient is determined by analyzing the change trend of the hydrogen purity responsivity at each moment and all moments in a previous preset time period and the average distribution and dispersion degree of the hydrogen purity responsivity, so that the hydrogen concentration at each moment is corrected. According to the invention, the influence of cross interference of other combustible gases except hydrogen and baseline drift of the hydrogen sensor on hydrogen detection and concentration measurement is solved, and the long-term stability of hydrogen concentration monitoring and the accuracy and reliability of a measurement result are improved.

The invention belongs to the field of hydrogen sensors, and particularly relates to an MEMS hydrogen sensor based on a high-entropy alloy and a preparation method of the MEMS hydrogen sensor. The hydrogen sensor comprises an insulating substrate, an interdigital electrode and a hydrogen sensitive layer, the hydrogen sensitive layer is formed by compounding high-entropy alloy nanoparticles composed of at least five transition metal elements and a semiconductor metal oxide substrate, and the high-entropy alloy nanoparticles are uniformly dispersed on the surface of the semiconductor metal oxide substrate to form a heterojunction; the atomic percent of each transition metal element in the high-entropy alloy nanoparticles is 5%-35%; the semiconductor metal oxide substrate is of a SnO2 or ZnO nano structure, and the specific surface area is larger than or equal to 50 m < 2 > / g. The preparation method is the preparation method of the hydrogen sensor. The hydrogen sensor provided by the invention has an ultralow hydrogen detection limit, the response speed is within a second level, the consumption of noble metal is greatly reduced, and the activity attenuation in a high-temperature environment is small.

This invention proposes a tapered fiber optic hydrogen sensor and its fabrication method, belonging to the field of hydrogen sensors. The sensor includes a tapered section in the middle of an optical fiber; a sensing element tightly fitted around the tapered section; a light source inputting an optical signal into the optical fiber; a spectrometer measuring the position of characteristic peaks in the optical fiber's spectrum; and a three-layer thin-film structure comprising the sensing element from the inside out: an excitation layer that excites the optical fiber surface to generate a plasmon resonance effect; a reaction layer made of a gas-sensitive material that reacts with hydrogen; and a catalytic layer that catalyzes the reaction between the gas-sensitive material and hydrogen. This invention employs a tapering method to fabricate the fiber optic sensor, significantly improving its sensitivity. Using tungsten oxide and gold co-sputtering material as the gas-sensitive material greatly improves the response and recovery times compared to using only tungsten oxide.

The invention discloses a flow compensation method and device for a palladium alloy film hydrogen sensor and a transmitter. The method comprises the steps that the response time tau, the actually-measured resistance change value delta Rmeas and the concentration measurement value Cmeas of the palladium alloy film hydrogen sensor for currently detecting to-be-detected gas are obtained; determining a current flow estimated value Qest of the to-be-detected gas according to the tau in combination with a pre-established flow-response time relation model; determining the ratio k of the delta Rmeas to the theoretical resistance change value delta Rturn corresponding to the concentration true value Cturn of the gas to be detected according to the Qest in combination with a pre-established flow-resistance change ratio relation model; and correcting the Cmeas according to the k, so as to obtain the Cturn. Therefore, the influence of the flow change of the to-be-measured gas on the concentration measurement value of the palladium alloy hydrogen sensor can be corrected based on the response time.

The invention discloses a hydrogen concentration measurement method based on a multi-mode sensor, and relates to the technical field of gas detection and industrial process safety monitoring. Hydrogen sensors based on different physical principles are introduced in the same measurement link, and environmental variables such as temperature, humidity, pressure and the like and sensor output are collected together; a multi-dimensional feature is formed after normalization and time alignment, and then fusion is performed by using a weight adaptive to the change of an environment, so that instantaneous errors generated by a single sensor due to temperature drift, wet drift or pressure fluctuation are shared or suppressed, and the stability and repeatability of a fusion result are improved; furthermore, a cross sensitivity compensation module arranged before fusion identifies response differences between hydrogen and interference components such as carbon monoxide and methane by using a machine learning model obtained by training under a multi-gas mixing working condition, and the probability of false signals and false alarms caused by coexisting gas is reduced on the premise that a special detection channel is not added.

A system including an engine capable of operating with fuel containing hydrogen, the system being provided with: a crankcase of the engine; an engine intake passage that sucks air into the engine; a crankcase intake passage that branches off from the engine intake passage and introduces air into the crankcase; a dilution air valve that is disposed in the crankcase intake passage and that opens and closes the crankcase intake passage; a compressor disposed upstream of a branch portion branching from the engine intake passage to the crankcase intake passage; a hydrogen sensor that detects a hydrogen concentration inside the crankcase; a crankcase exhaust passage that exhausts air inside the crankcase; and a control device that controls the opening and closing of the dilution air valve on the basis of the hydrogen concentration detected by the hydrogen sensor.

The invention discloses a hydrogen sensor based on a fiber bragg grating. An optical fiber core part of a sensing optical fiber is a circular cross section and is divided into two half parts, a first Bragg grating and a second Bragg grating with different grating periods are respectively engraved, an optical fiber cladding is D-shaped, and a hydrogen-sensitive coating is arranged on a flat peripheral surface. The inner diameter of the capillary tube is 0.8-1.2 mm, the outer diameter of the capillary tube is 4-6mm, the side wall of the capillary tube is provided with a hydrogen inlet / outlet through hole, and the sensing optical fiber is fixed on the inner wall of the capillary tube and is The sensor inner shell is provided with a first hydrogen inlet and a first hydrogen outlet, and a filter screen is arranged at the inlet and forms a hydrogen inlet and outlet channel together with the sensor outer shell. The sensor utilizes the hydrogen-sensitive coating to adsorb hydrogen and expand, so that the optical fiber core part is strained, and the central wavelength of reflected light of the Bragg grating shifts to detect the hydrogen concentration. The sensor has the advantages of strong electromagnetic interference resistance, high sensitivity, good stability, fast response and the like, and can be widely applied to concentration monitoring of hydrogen related production, storage, transportation and other scenes.

The invention discloses a thermal conductivity type hydrogen sensor error compensation method based on dynamic collaborative optimization, and the method comprises the steps: taking the output voltage and temperature and humidity parameters of a conditioning circuit of a thermal conductivity type hydrogen sensor as the input, taking the hydrogen concentration as the output, constructing a neural network model based on error back propagation, and providing a dual-stage collaborative optimization strategy. Through deep exploration of a global-local dual-mode collaborative optimization mechanism and fast response capability complementation, the problem of temperature and humidity nonlinear compensation in a hydrogen complex environment is effectively solved, the method has the characteristics of high convergence speed, good network performance and the like, the purpose of accurate detection can be achieved, and the method is suitable for large-scale popularization and application. And an innovative solution is provided for environmental disturbance suppression and self-adaptive performance improvement of the gas detection equipment.

The invention discloses a surface plasmon resonance (SPR) hydrogen sensor based on an Ag / PDMS / Pt-WO3 multilayer structure. The SPR hydrogen sensor is characterized by comprising a halogen lamp light source, two sections of multimode optical fibers, a spectrometer and an SPR hydrogen sensing head, wherein the SPR hydrogen sensing head is composed of a different-core structure formed by multimode-single-mode-multimode optical fibers, a silver film, PDMS (polydimethylsiloxane) and Pt-WO3 (platinum-tungsten trioxide). The SPR hydrogen sensor based on the Ag / PDMS / Pt-WO3 multi-layer structure, which is simple to prepare, high in sensitivity and capable of being repeatedly used for a long time, is provided aiming at the defects that an existing optical fiber SPR hydrogen sensor is low in sensitivity and complex in device manufacturing, and PdH is changed from an alpha phase to a beta phase when Pd is used as a hydrogen sensitive material, so that the use of the device is influenced, and the like. When the hydrogen concentration is increased, the Pt-WO3 reacts with the hydrogen to generate heat, so that the refractive index of the PDMS film is changed, the SPR resonance spectrum is moved, and the hydrogen concentration is obtained by observing the offset of the PDMS film. The high refractive index sensitivity of SPR is brought into full play by utilizing the high refractive index change of PDMS, so that high-precision detection of hydrogen leakage is realized.

The invention discloses an optical fiber surface plasmon probe for high-sensitivity hydrogen sensing, and relates to the technical field of optical fiber sensing, and the optical fiber surface plasmon probe comprises a spatial dislocation type double-layer structure which is integrated on the end face of an optical fiber and comprises a first nano-structure on the upper layer and a second nano-structure on the lower layer, the first nano structure and the second nano structure are arranged in a triangular lattice array; the optical cement is arranged at the top of the end face of the optical fiber, and a plurality of dielectric nano-columns arranged in an array are arranged at the top end of the optical cement and used for forming a staggered gap length between the first nano-structure and the second nano-structure; the equivalent dielectric cavity is arranged between the first nanostructure and the second nanostructure and consists of air among the dielectric nanocolumns; wherein the first nano-structure and the second nano-structure are both made of hydrogen-sensitive metal materials. The light weight characteristic of the optical fiber and the high sensitivity advantage of the micro-nano structure are combined, and the sensitivity bottleneck of an existing optical fiber hydrogen sensor is broken through.

The invention discloses a surface acoustic wave hydrogen sensor based on a platinum and graphene composite film and a manufacturing method thereof, and belongs to the technical field of gas sensors, the surface acoustic wave hydrogen sensor comprises a piezo-electric crystal, the piezo-electric crystal is oppositely provided with a first interdigital transducer and a second interdigital transducer, a graphene film is deposited on the piezoelectric crystal and located on a sound propagation path between the first interdigital transducer and the second interdigital transducer, a platinum catalyst layer film is deposited on the surface of the graphene film, and the first interdigital transducer and the second interdigital transducer are connected with an external circuit through metal pins. The external circuit comprises a signal generator, a frequency meter and a data acquisition system, the signal generator generates an excitation signal and transmits the excitation signal to the first interdigital transducer through the metal pin, and a detection signal generated by the interdigital transducers is received by the data acquisition system and then is detected and compared through the frequency meter. The problems that an existing pure graphene hydrogen sensor is low in sensitivity, poor in selectivity and slow in response time can be solved.

The invention discloses a lithium battery energy storage power station fire protection monitoring and early warning method based on PACK-level two-fluid fire protection, belongs to the technical field of energy storage battery safety, and realizes comprehensive efficiency improvement through multi-level cooperative operation. According to the monitoring level, a cluster-level hydrogen sensor is used for capturing a thermal runaway early signal, complementary monitoring is formed in cooperation with a cabin-level multi-type sensor, accurate positioning and early warning of a fault pack are achieved while sensor configuration is simplified, and therefore invalid monitoring and potential safety hazards are reduced. A pack-level double-fluid system is innovatively adopted in the fire-fighting level, the synergistic effect of gas and water is combined, the fire extinguishing efficiency and equipment protection are both considered, and the limitation of a traditional single fire extinguishing mode is avoided; and meanwhile, a cluster-level and cabin-level grading fire-fighting mechanism is constructed, corresponding equipment is started according to early warning level differentiation, and excessive consumption of a fire extinguishing agent and scrapping loss of normal batteries are reduced. In addition, through dynamic monitoring and closed-loop control in the fire fighting process, it is ensured that fire extinguishing treatment is thorough and not excessive.

The present invention relates to a diagnostic system for hydrogen gas facilities based on optical sensors, and more specifically, to a diagnostic system for hydrogen gas facilities based on optical sensors that integrates a line-type optical vibration and temperature sensor laid along an extended path of a hydrogen gas facility with a point-type optical hydrogen sensor installed at a key location, and applies Edge-AI technology to monitor various abnormal signs such as excavation, impact, and hydrogen leakage in real time, and precisely diagnose and predict potential risks.

The invention provides a hydrogen sensor as well as a preparation method and application thereof, and particularly relates to the technical field of sensors. The hydrogen sensor comprises a ceramic substrate electrode and a gas-sensitive layer, the gas-sensitive layer is arranged on the surface of the ceramic substrate electrode, the gas-sensitive layer comprises a composite material formed by doping a semiconductor material with precious metal, the surface of the composite material is coated with a hydrophobic membrane, and the surface of the hydrophobic membrane is coated with a metal layer. The hydrophobic membrane is formed by chemical coupling reaction of hydrophobic silane and hydroxyl groups. According to the hydrogen sensor, by adopting the specific semiconductor sensing material and the hydrophobic membrane, the adaptability and the stability of the hydrogen sensor in a high-temperature alkali liquor corrosion environment are greatly improved, the hydrogen sensor can reliably work for a long time in a severe environment, the replacement frequency of the sensor is reduced, and the use cost is reduced.

The invention relates to a modularized electric power inspection unmanned aerial vehicle capable of rapidly replacing a hydrogen bottle, the modularized electric power inspection unmanned aerial vehicle comprises an unmanned aerial vehicle assembly and a gas detection assembly, the unmanned aerial vehicle assembly comprises a vehicle body, a connecting rod, a containing box body, a middle box, a supporting frame, a mounting cylinder, a vent hole, a motor and a hydrogen sensor, and integration of unmanned aerial vehicle flight and hydrogen detection functions is achieved. Through the remote sampling function of the gas detection assembly, the unmanned aerial vehicle can complete detection operation without approaching a high-voltage power grid in a short distance, the probability of collision with the power grid can be remarkably reduced, risks of electric shock and power grid short circuit are avoided fundamentally, and the safety of the unmanned aerial vehicle and stable operation of a power plant are guaranteed.

An apparatus and method for controlling a fuel electrode exhaust valve of a fuel cell system are disclosed, wherein the apparatus includes a hydrogen sensor configured to measure a concentration of hydrogen released by opening the fuel electrode exhaust valve, a first pressure sensor configured to measure an inlet pressure of the fuel electrode exhaust valve, a second pressure sensor configured to measure an outlet pressure of the fuel electrode exhaust valve, and a controller configured to control an opening area of the fuel electrode exhaust valve to a maximum value when exhausting condensate, and to control the opening area of the fuel electrode exhaust valve based on a difference between the inlet pressure and the outlet pressure of the fuel electrode exhaust valve when purging hydrogen.

This hydrogen-powered electric vehicle comprises an electric drive unit for driving at least one drive wheel of the vehicle, at least one electrical energy storage battery, at least one fuel cell module, a hydrogen tank for the fuel cell, and a hydrogen circuit connected to the tank, including components through which hydrogen circulates. It includes a set of hollow guide conduits (12, 13), each having a first end (14) opening at a component of the hydrogen circuit and a second accessible end. Figure for the abbreviation: Fig 2

This invention provides a device for measuring hydrogen concentration in soil and a method for determining hydrogen diffusion paths. The measuring device includes: a first gas stone and a second gas stone, buried in the soil; an inlet pipe and an outlet pipe, one end of the inlet pipe connected to the first gas stone and one end of the outlet pipe connected to the second gas stone; a return pump, the other end of the inlet pipe connected to the inlet of the return pump and the other end of the outlet pipe connected to the outlet of the return pump to form a circulating hydrogen circuit; and a measuring component including: a sealed bag and a hydrogen sensor, the sealed bag being connected to the inlet pipe and the hydrogen sensor placed in the sealed bag to measure the hydrogen concentration in the circulating hydrogen circuit. The hydrogen concentration obtained by the above measuring device has high accuracy.

The invention discloses a Pd / WO3-x-based ppb-level dual-signal hydrogen sensor and a manufacturing method thereof, and belongs to the technical field of sensor preparation. The sensor sequentially comprises a single-pass anodic aluminum oxide substrate, an anoxic tungsten oxide (WO3-x) hydrogen sensitive layer, a thin Pd color-changing catalyst layer, a thick Pd resistance catalyst layer and an electrode layer from bottom to top, and the electrode layer is any one of Ag, Au, Cu and Al. The hydrogen sensor provided by the invention has the advantages of high sensitivity, ppb-level detection lower limit, low processing difficulty and mutual verification of resistance-chromatic aberration double signals, and provides a new thought for the design of a sensor substrate.

The present application relates to hydrogen sensing material and functional film technical field, disclose a kind of TiVZrMnFeNi high-entropy alloy hydrogen sensitive film, the high-entropy alloy hydrogen sensitive film each element includes by atomic percentage:Ti 12~18 at.%, V 22~28 at.%, Zr 12~18 at.%, Mn 12~18 at.%, Fe 12~18 at.%, Ni 12~18 at.%.The present application also discloses a kind of preparation method of the TiVZrMnFeNi high-entropy alloy hydrogen sensitive film and based on the hydrogen sensor of the TiVZrMnFeNi high-entropy alloy hydrogen sensitive film.The present application uses TiVZrMnFeNi high-entropy alloy as hydrogen sensitive layer material, with hydrogen storage capacity and resistance response characteristics, can produce stable, repeatable resistance rise response to hydrogen at 90°C condition, realizes hydrogen sensitive function.

The embodiment of the invention provides a design method and device of a PdNi alloy hydrogen sensor and electronic equipment, and belongs to the technical field of hydrogen sensors. The design method comprises the steps that various PdNi alloy models are obtained, wherein the proportions of Pd and Ni in the various PdNi alloy models are different; determining the volume of each PdNi alloy model corresponding to various H adsorption proportions; determining a first proportion range of Pd and Ni based on the volume of each PdNi alloy model corresponding to various H adsorption proportions; determining the adsorption energy of each PdNi alloy model to H; determining a second proportion range based on the adsorption energy of each PdNi alloy model; and based on the first proportion range and the second proportion range, the optimal proportion range of Pd and Ni is determined. By adopting the method, the optimal ratio range of the palladium-nickel alloy can be determined, and the service life of the PdNi alloy hydrogen sensor is prolonged, so that the long-term stable operation of the PdNi alloy hydrogen sensor is realized, the research and development cycle of a product is shortened, and the development cost of the product is saved.