33 results about "Hydrogen sulfide sensor" patented technology

The invention is applicable to the technical field of robots, and provides a clustered pipeline defect detecting and repairing robot which comprises a rack, the rack is provided with a walking mechanism used for moving in a pipeline, a connecting structure used for carrying out cluster connection on a plurality of machines and a repairing mechanism used for repairing a damaged part of the pipeline, and the rack is provided with a single chip microcomputer. The walking mechanisms, the connecting structures and the repairing mechanisms are all controlled by a single-chip microcomputer, the walking mechanisms are distributed along the circumference of the rack and symmetrically installed on the rack, and the connecting structures are symmetrically installed at the two ends of the rack. The point type laser hydrogen sulfide sensor is arranged below the camera; the triaxial angular velocity and high-precision positioning sensor is positioned on the lower top surface of the body bin; the lithium ion battery is fixed on the inner wall of the body bin and supplies power to the device; and a laser radar is mounted on the tail side to assist in performing recess detection in the pipeline.

An electric vehicle is provided with a vehicle body, a battery module, a hydrogen sulfide sensor, an air conditioning device, and an ECU. In an internal air mode, when the hydrogen sulfide sensor detects generation of a gas or detects a situation predicted to be generation of a gas, the ECU implements a restriction mode that restricts an air volume of the air conditioning device.

The axial flow fan comprises a cyclone dust removal conical shell and a third electric telescopic rod, a dust removal end cover is fixed to the outer wall of the top of the cyclone dust removal conical shell through bolts, the inner wall of one side of the middle of the cyclone dust removal conical shell communicates with an air inlet pipeline, and a dust exhaust pipe is welded to the center of the bottom of the cyclone dust removal conical shell in a penetrating mode. Gas detection is accurate and comprehensive, purification is long-acting and efficient, the defects that existing equipment is single in detection, incomplete in purification and prone to poisoning due to catalysis are overcome, the first gas detection module and the second gas detection module both adopt multi-parameter integrated sensor arrays, gas, carbon monoxide, hydrogen sulfide and humidity sensors are integrated, and the detection accuracy is improved. High-speed signal transmission is achieved through a CAN bus and a microcontroller, gas composition and concentration changes can be accurately monitored in real time, it is ensured that no harmful gas is missed and purified, and a glass fiber filter membrane, a porous silica gel adsorption column and an activated carbon adsorption net cage in a second rectangular flow guide pipe form a three-stage pretreatment structure.

The invention discloses a residential building toilet fresh air exhaust control system and an intelligent control method. The method comprises the steps that data of a door state sensor, a closestool state sensor, a hydrogen sulfide sensor and a biological aerosol sensor are collected; the data is transmitted to the intelligent gateway through a communication link; performing multi-source data fusion analysis by the intelligent gateway, and identifying a toilet flushing event, a water seal damage risk and a pollutant concentration trend; according to event recognition and trend prediction results, an exhaust fan and a fresh air fan are controlled to operate in advance, and rapid discharge of pollutants and indoor positive pressure maintenance are achieved; and when the water seal damage risk is detected, positive pressure air supply, pollution gas discharge and water replenishing prompts are triggered. Prediction and intervention control can be carried out before pollutant aerosol is generated, and the ventilation efficiency and the prevention and control effect are remarkably improved.

The present application relates to the technical fields of industrial desulfurization, and especially relates to an aeration intelligent adjusting device for preventing sulfur paste precipitation, which comprises an aeration tank, an aeration unit arranged in the aeration tank and comprising a main aeration pipe and a plurality of branch aeration pipes, a backwashing unit arranged at the lower part of the branch aeration pipes in the aeration tank and comprising a backwashing pipe, a monitoring unit comprising a first hydrogen sulfide sensor, a second hydrogen sulfide sensor and a turbidity sensor arranged on the upper, middle and lower parts of the side wall in the aeration tank respectively, and an ultrasonic sensor arranged at the center of the bottom of the aeration tank for monitoring the hydrogen sulfide concentration, the suspended concentration of sulfur paste particles and the deposition thickness of sulfur paste in different areas in the aeration tank in real time, and a control module connected with the aeration unit, the backwashing unit and the monitoring unit respectively. The present application improves the performance of preventing sulfur paste precipitation and the operation efficiency of the aeration device.

An electric vehicle is provided with a vehicle body, a battery module, a hydrogen sulfide sensor, an air conditioning device, and an ECU. When the hydrogen sulfide sensor detects generation of a gas or detects a situation predicted to be generation of a gas, the ECU reduces an air volume generated by the air conditioning device as compared with a comparison target state. The comparison target state includes a state in which the hydrogen sulfide sensor does not detect generation of a gas.

The invention discloses a battery assembly anomaly detection method, an anomaly detection module, a battery pack, an electronic device, a vehicle and a computer readable storage medium. The anomaly detection method comprises the following steps: acquiring the gas concentration of hydrogen sulfide gas in the internal environment of the battery assembly; determining the concentration change speed according to the gas concentration; and determining the abnormal state degree of the battery assembly according to the gas concentration and the concentration change speed, wherein the abnormal state degree comprises a plurality of abnormal levels. According to the anomaly detection method, the hydrogen sulfide sensor is arranged to detect the hydrogen sulfide gas concentration and output the collection signal, the controller is arranged to judge whether the battery assembly is abnormal or not according to the collection signal, and the abnormal conditions such as leakage or thermal runaway of the battery assembly can be monitored. And the abnormal grade of the battery assembly can be determined according to the gas concentration and the concentration change speed, so that the battery assembly can be treated in a targeted manner.

The invention discloses a mobile intelligent gas detector, and relates to the technical field of gas detection. The device comprises a shell, a pan-tilt camera module, an active air supply and centrifugal dust removal detection module and a multi-mode alarm device. External gas enters the separation cylinder through the gas guide cover and the tangential gas inlet channel, dust is settled under centrifugal force, and clean gas is driven by the gas wheel paddle to wash a carbon monoxide sensor, a hydrogen sulfide sensor, an oxygen sensor and a methane sensor in the gas detection pipe, so that high-speed and low-drift detection is realized. The holder intelligently distributes driving torque in an alarm or inspection mode through a friction and electromagnetic switching mechanism, and the camera is driven to view by 360 degrees and synchronously give an acousto-optic alarm. Active sensitization, dust removal protection and panoramic monitoring are integrated, and the hazardous gas early warning and on-site emergency disposal efficiency can be remarkably improved.

A hydrogen sulfide sensor includes a substrate, a par of interdigitated electrodes disposed on the substrate, and a homogeneous polyaniline sensing film disposed on the pair of interdigitated electrodes and having electrical conductivity that depends upon a concentration of hydrogen sulfide. A method for detecting hydrogen sulfide includes for each sensor of a plurality of sensors: generating a signal if said sensor is exposed to a sample of hydrogen sulfide having density greater than or equal to a hydrogen sulfide detection threshold of said sensor, wherein the plurality of sensors has a respective plurality of hydrogen sulfide detection limits that span a detection range. A method for forming a hydrogen sulfide sensor includes dissolving a polyaniline polymer and a metal-chloride salt in an organic solvent to form a solution, and spin-coating the solution to form a homogeneous sensing film disposed on a pair of interdigitated electrodes disposed on a substrate.

This prevents gases generated from the energy storage device from entering the vehicle's interior. [Solution] The electric vehicle 100 comprises a vehicle body, a battery module 50, a hydrogen sulfide sensor 70, an air conditioning unit 170, and an ECU 150. In recirculation mode, when the hydrogen sulfide sensor 70 detects the generation of gas or detects that the generation of gas is predicted, the ECU 150 implements a limiting mode that limits the airflow of the air conditioning unit 170.

The utility model discloses a construction safety intelligent monitoring robot, which relates to the field of construction safety monitoring and comprises a mobile carrying platform, a detection hardware module and a data transmission and storage module, the detection hardware module comprises fire behavior detection equipment, a combustible gas sensor, a hydrogen sulfide sensor, a carbon monoxide sensor, an oxygen sensor, a benzene sensor and a wind speed sensor; and the data transmission and storage module is used for storing various detection data of the detection hardware module and uploading the detection data to the cloud. The construction safety in a complex scene of a construction site is intelligently monitored by using a multi-aspect detection hardware module, and particularly the construction safety in a limited space is monitored.

The invention discloses a room-temperature hydrogen sulfide (H2S) sensor based on stannic oxide (SnO2) hollow spheres and polypyrrole (PPy) nanotubes and a preparation method of the room-temperature hydrogen sulfide (H2S) sensor, and belongs to the technical field of gas sensors. A green and low-cost chemical synthesis process is adopted, SnO2 hollow spheres and PPy nanotubes are prepared, a gas sensitive material with a multi-stage micro-nano structure and a p-n heterojunction is formed through composite construction, and the surface of an interdigital electrode is coated with the gas sensitive material to prepare a sensing device. The composite material combines abundant active sites brought by high specific surface area of the SnO2 hollow spheres and excellent room temperature conductivity of the PPy nanotubes, and effectively solves the problems of high working temperature and large energy consumption of a traditional metal oxide sensor. Tests show that the sensor has the characteristics of quick response and short recovery time to H2S gas at room temperature. In addition, the preparation process is simple, raw materials are cheap and easy to obtain, and the method is suitable for large-scale production and has wide application prospects in the fields of industrial safety monitoring and environment detection.

The oil and gas pipeline inspection device comprises an unmanned aerial vehicle main body and mounting arms which are fixedly connected to the left end and the right end of the unmanned aerial vehicle main body and used for supporting, and wings are mounted at the outer ends of the mounting arms; a liquid storage cavity is formed in the middle position of the unmanned aerial vehicle main body, a first connecting pipe is fixedly connected to the lower right end of the liquid storage cavity, a micro infusion pump is connected to the right end of the first connecting pipe through a bolt, and a rotatable stirring assembly is arranged on the liquid storage cavity; supporting rods are fixedly connected to the lower right end of the unmanned aerial vehicle body in a front-back symmetrical mode, the supporting rods are connected to the right end of a mounting base in an embedded mode, a methane sensor, a hydrogen sulfide sensor and a camera are sequentially mounted at the lower end of the mounting base from left to right, and the left end of the mounting base is in threaded connection with a threaded rod. According to the oil and gas pipeline inspection device, the height can be conveniently adjusted, the detection accuracy is improved, detected abnormal points can be conveniently marked, and meanwhile coating precipitation is prevented.

The invention relates to a hydrogen sulfide gas concentration measurement compensation method, system and device, and belongs to the technical field of gas concentration detection. Comprising the following steps: acquiring key data of hydrogen sulfide gas in an initial state; performing control variable analysis on the key data to obtain zero data; determining the relationship between the zero data and the key data, and establishing a zero compensation relational expression; acquiring an aging coefficient of the hydrogen sulfide sensor, and establishing an aging compensation relational expression according to the aging coefficient; respectively acquiring various data of the hydrogen sulfide gas in different environments, and establishing a parameter compensation relational expression according to the data; according to the zero point compensation relational expression, the parameter compensation relational expression and the aging compensation relational expression, a zero point compensation value, a concentration compensation value and an aging compensation value are obtained respectively; and obtaining the concentration value of the hydrogen sulfide gas to be measured according to the three compensation values. Through an accurate data compensation mechanism, the accuracy and repeatability of a detection result are improved, the operation process is simplified, the cost is reduced, and the detection efficiency is improved.

The utility model relates to the technical field of natural gas detection, in particular to an online detection system for tetrahydrothiophene and hydrogen sulfide in natural gas. An inlet of the three-way electromagnetic valve is communicated with a natural gas source outlet; an inlet of the balance pipeline is communicated with a first outlet of the three-way electromagnetic valve; an inlet of the detection pipeline is communicated with a second outlet of the three-way electromagnetic valve, and the detection pipeline is sequentially communicated with a tetrahydrothiophene sensor and a hydrogen sulfide sensor in the flowing direction of the natural gas; the purging pipeline is used for purging residual natural gas in the detection pipeline before and after detection; the waste gas filtering device is used for filtering tetrahydrothiophene and hydrogen sulfide in the natural gas, and an outlet of the balance pipeline and an outlet of the hydrogen sulfide sensor are respectively communicated with an inlet of the waste gas filtering device. The device realizes simultaneous detection of the content of tetrahydrothiophene and hydrogen sulfide and intermittent measurement, avoids sensor poisoning, and prolongs the service life of the system.

The utility model relates to the technical field of colony house disinfection equipment, in particular to a cattle and sheep house disinfection device for cattle and sheep breeding, which comprises a filter connected with a liquid storage tank of a spray execution component. The spraying execution assembly further comprises an electromagnetic valve, a pressure pump, a conveying pipe and a plurality of high-pressure atomizing nozzles connected to the conveying pipe, wherein the electromagnetic valve, the pressure pump and the conveying pipe are sequentially connected with the liquid storage tank. The spraying execution assembly is electrically connected with a controller, the controller is electrically connected with an environment monitoring assembly, the controller is electrically connected with a communication module, and the environment monitoring assembly comprises an ammonia gas sensor, a hydrogen sulfide sensor and a temperature and humidity sensor. The environment detection assembly and the spraying execution assembly are arranged, harmful gas, temperature and humidity are detected in real time through the environment detection assembly, the controller automatically controls the spraying execution assembly to disinfect a breeding house according to preset triggering conditions, manual control over a spraying cart is not needed, the labor intensity is remarkably reduced, and the frequency of people going in and out of the breeding house is reduced; the cross infection risk of pathogens is effectively reduced.

This invention discloses a hydrogen sulfide sensor detector based on cholesterol-modified lipid perovskite, its preparation method, and its application, belonging to the field of biotechnology. This invention utilizes highly biocompatible phospholipids and cholesterol to construct a stable protective layer for hydrophobic perovskite nanoparticles, enabling them to emit light stably. This significantly improves the stability of the perovskite and provides an ideal platform for the accurate detection of hydrogen sulfide. The cholesterol-modified lipid perovskite hydrogen sulfide sensor detector provided by this invention significantly improves the detection limit and response speed of hydrogen sulfide, reduces the risk of false negatives, and provides an intuitive and visual detection method for hydrogen sulfide. With a detection limit as low as ng / mL, it helps to promote the development of gas sensing technology, improve the accuracy and efficiency of harmful gas detection, and also provides a new research direction for the application of nanomaterials in environmental monitoring.

An electrically powered vehicle includes a vehicle body, a battery module, a hydrogen sulfide sensor, an air conditioner, and an ECU. When the hydrogen sulfide sensor detects generation of a gas or detects that the generation of the gas is predicted, the ECU reduces an amount of airflow from the air conditioner as compared to that in a comparative state. The comparative state includes a state in which the hydrogen sulfide sensor does not detect the generation of the gas.

The invention belongs to the technical field of gas sensing materials, and particularly relates to a high-entropy oxide / In2O3 composite nanofiber material, a preparation method thereof, a hydrogen sulfide sensor and application. The preparation method of the high-entropy oxide / In2O3 composite nanofiber material comprises the following steps: (1) dissolving equimolar iron source, zinc source, nickel source, copper source and cobalt source and polyvinylpyrrolidone in N, N-dimethylformamide, and stirring to obtain a solution A; (2) dissolving an indium source and polyacrylonitrile in N, N-dimethylformamide, and stirring to obtain a solution B; (3) pouring the solution A into the solution B, and continuously stirring to obtain sol; (4) performing electrostatic spinning on the sol to obtain electrostatic spinning fibers; and (5) calcining the electrostatic spinning fiber to obtain the high-entropy oxide / In2O3 composite nanofiber material. The hydrogen sulfide sensor disclosed by the invention has relatively high sensitivity and excellent cross selectivity.

The invention is suitable for the technical field of environmental pollution monitoring, and particularly relates to an environmental pollution monitoring method and system suitable for livestock breeding, and the method comprises the steps: delimiting a livestock breeding region, collecting environmental data through a sensing device disposed in the livestock breeding region in advance, and transmitting the environmental data to a server; wherein the sensing equipment at least comprises an ammonia gas sensor, a hydrogen sulfide sensor and a methane sensor, and when the environmental data exceed a pre-edited risk range, the corresponding sensing equipment is defined as abnormal equipment; a video monitoring device installed in a livestock breeding area is utilized to collect a video frame containing an abnormal device, a breeding individual closest to the abnormal device is found out, a monitoring object is obtained, and a snapshot of the area where the monitoring object is located is intercepted. According to the method, sensor drift or deviation caused by environmental interference can be corrected in time by determining the correction factor, the accuracy of environmental data is improved, and intelligent and refined development of a livestock breeding area is promoted.

An expiratory test device is provided to test for hydrogen sulfide and other parameters in exhaled breath from a patient. In addition to an atmospheric input for receiving atmospheric air, a patient sample input is provided for receiving exhaled breath from a patient. A valve is coupled to the patient sample input and the atmospheric input, and first and second pathways are provided from the valve to a hydrogen sulfide sensor module and a second sensor module.

The invention discloses a high-sulfur mine ventilator frequency conversion control method and system based on multi-source information collaboration. According to the method, data are collected in real time through a hydrogen sulfide (H2S) sensor, a personnel positioning device and a wind pressure sensor, and reliability preprocessing is carried out through median value verification, delay confirmation and majority voting and moving average filtering; and the controller executes a control algorithm which takes the hydrogen sulfide concentration as a safety reference, the number of personnel as an air volume optimization factor and the air pressure as closed-loop feedback based on the preprocessed data, calculates the optimal operation frequency of the ventilator through a graded safety compensation model, and executes the optimal operation frequency through the frequency converter. According to the invention, accurate on-demand supply and high-efficiency energy conservation of high-sulfur mine ventilation are realized, and the problems of excessive ventilation and delayed response to (H2S) highly toxic gas in the prior art are effectively solved.

The utility model discloses an intelligent livestock and poultry house deodorization effect monitoring system, the monitoring system comprises a monitoring equipment box and a temperature and humidity sensor, the monitoring equipment box is used for respectively monitoring gas at an air inlet and an air outlet of deodorization equipment, the monitoring equipment box comprises an air inlet and an air outlet, a pipeline is connected between the air inlet and the air outlet, and the pipeline is communicated with the temperature and humidity sensor. An electromagnetic valve, a gas-water separation filter, a micro air pump, a glass rotameter, a particulate matter impurity filter, a carbon dioxide sensor, an ammonia gas sensor and a hydrogen sulfide sensor are sequentially arranged in the pipeline; the carbon dioxide sensor, the ammonia gas sensor, the hydrogen sulfide sensor and the temperature and humidity sensor transmit collected data to the data processing module through an RS485 bus, and the data processing module is electrically connected with the deodorization device, the electromagnetic valve and the micro air pump. Through the sensor array and the communication module, real-time collection of environmental data before and after deodorization is achieved, deodorization equipment is automatically started and stopped according to a standard reaching result, and compared with a traditional system, energy consumption is reduced.

The present invention discloses a mobile intelligent gas detector, which relates to the field of gas detection technology. The present invention comprises a housing, a pan-tilt camera module, an active air supply, a centrifugal dust removal detection module and a multi-modal alarm device. External gas enters the separation cylinder through the air guide cover and the tangential air inlet, and the dust settles under the centrifugal force. The clean gas flushes the carbon monoxide sensor, hydrogen sulfide sensor, oxygen sensor and methane sensor in the gas detection tube under the drive of the turbine blades, thereby realizing high-speed and low-drift detection. The pan-tilt intelligently distributes the driving torque in the alarm or inspection mode through friction and electromagnetic switching mechanism, driving the camera to view 360 degrees and synchronize sound and light warnings. Integrating active sensitization, dust removal protection and panoramic monitoring, it can significantly improve the efficiency of early warning of hazardous gases and on-site emergency disposal.

The invention discloses a surface acoustic wave hydrogen sulfide sensor based on a magnesium-aluminum layered double hydroxide nano material and a preparation method. The surface acoustic wave hydrogen sulfide sensor comprises a piezoelectric crystal, a first interdigital transducer and a second interdigital transducer which are arranged on the piezoelectric substrate in parallel at an interval, and a magnesium-aluminum layered double hydroxide nano material sensitive film which is coated on the piezoelectric substrate and is positioned between the two interdigital transducers. The preparation method comprises the following steps: preparing a magnesium-aluminum layered double hydroxide nano material through a coprecipitation method; the preparation method comprises the following steps: dispersing a magnesium-aluminum layered double hydroxide nano material into an ethanol solution; preparing two interdigital transducers on the piezoelectric crystal by adopting a stripping process; and coating an area between two interdigital transducers with the dispersion liquid to obtain the surface acoustic wave hydrogen sulfide sensor. The surface acoustic wave hydrogen sulfide sensor has excellent gas sensitivity to hydrogen sulfide gas at room temperature, and the sensitivity of the surface acoustic wave hydrogen sulfide sensor is remarkably improved.

The invention provides a testing system and method for a hydrogen sulfide sensor, and belongs to the technical field of measurement and testing. The method comprises a sensor type identification stage: determining the type of a target sensor based on the measurement principle and the material attribute of the target sensor; a test mode determination stage: based on the identified target sensor type, determining a test mode of the target sensor, the test mode at least comprising a reference test mode and a compensation test mode; a test execution stage: executing a performance test on the target sensor based on the determined test mode; a test result analysis stage: analyzing the performance of the target sensor based on the test result; and a man-machine interaction feedback stage: receiving man-machine interaction feedback data, determining whether to switch the test mode based on the feedback data, if so, returning to the test mode determination stage and reselecting the test mode, and otherwise, ending the test. The technical scheme provided by the invention is suitable for the performance test of various types of hydrogen sulfide sensors, and the test error can be reduced.

The invention discloses a composite gas-sensitive material based on a semiconductor metal oxide, a preparation method of the composite gas-sensitive material and application of the composite gas-sensitive material in a hydrogen sulfide sensor, and belongs to the technical field of hydrogen sulfide sensors. The composite gas-sensitive material is used for a gas-sensitive layer of a hydrogen sulfide sensor, low-temperature rapid detection of low-concentration hydrogen sulfide is achieved in a material compounding and morphology regulation mode without precious metal modification, meanwhile, excellent selectivity of hydrogen sulfide gas is achieved, the ubiquitous problems of hydrogen sulfide sensors in the prior art are solved, and the hydrogen sulfide sensor has good application prospects. The energy consumption of the sensor is greatly reduced, the application scene of the sensor is widened, and possibility is provided for applying the sensor to emerging application scenes such as portable medical detection equipment in the future.

The invention relates to the field of refrigeration equipment, specifically to devices for monitoring the state of the refrigeration units. The device comprises a set of sensors that monitor the content of gases emitted by food products during storage, means for transmitting sensor signals to a controller (11) that analyzes gas sensor signals and transmits analysis results to external devices. The set of sensors includes a hydrogen sulfide sensor (1), an ammonia sensor (2), a carbon dioxide sensor (3), an ozone sensor (4), a VOC sensor (5), a temperature sensor (6), a moisture sensor (7), a vibration sensor (8), and a sound sensor (9). The technical effect of the invention is the creation of an autonomous device for continuous monitoring of the general condition of the refrigeration units, enabling early detection of food spoilage and equipment malfunctions.

The utility model discloses a coal mine tunnel safety monitoring device, which relates to the technical field of tunnel safety and comprises an adjusting frame, a lead screw is rotatably arranged in the adjusting frame, a knob is rotatably arranged on the upper surface of the adjusting frame, the lower end of the knob penetrates through the adjusting frame and is fixedly connected with the lead screw, and a lifting block is sleeved on the outer surface of the lead screw in a threaded manner. The coal mine tunnel safety monitoring device comprises a lifting block, one side of the lifting block is detachably connected with a vertical plate, the upper portion of one side of the vertical plate is fixedly provided with a supporting plate, and the upper surface of the supporting plate is fixedly provided with a methane sensor, a carbon monoxide sensor and an oxygen sensor. The mine tunnel detector can be matched with mine tunnels with different heights, and the carbon dioxide sensor and the hydrogen sulfide sensor can be selectively mounted or dismounted according to actual conditions aiming at the mine tunnels in different environments through the clamping plate and the vertical block, so that the mine tunnel detector can better adapt to the mine tunnels in different environments.

The invention relates to the technical field of pollution monitoring equipment, in particular to a Pt-Au alloy nano catalytic material-based hydrogen sulfide sensor and a preparation method thereof, AgCl nano cube is used as a sacrificial template to successfully synthesize a Pt-Au bimetallic alloy catalyst, and the catalyst is loaded on a pretreated conductive carbon black XC-72 carrier to obtain the hydrogen sulfide sensor based on the Pt-Au alloy nano catalytic material. A water-based silk-screen printing technology is utilized to further prepare a membrane electrode group, a device model constructed by combining a 3D printing technology is combined to assemble a gas sensor, and due to the synergistic effect between Pt and Au bimetals, the alloy catalyst shows excellent gas-sensitive performance superior to that of a single-metal catalyst, and particularly, the gas-sensitive performance of the alloy catalyst is greatly improved. The introduction of Au effectively alleviates the poisoning phenomenon of a Pt-based catalyst to H2S and the poisoning effect of CO, so that the constructed H2S sensor has excellent repeatability and stability, and realizes a low detection limit.