86 results about "Semiconductor sensor" patented technology

The invention discloses an indoor gas leakage monitoring and intelligent joint control system, and belongs to the technical field of intelligent safety monitoring systems. Comprising a sensing layer, a network layer, a control layer and a platform layer, the sensing layer comprises a multi-sensor array and an edge computing node, the multi-sensor array is combined with a catalytic combustion sensor, an infrared sensor, a semiconductor sensor and a temperature and humidity sensor, and sensor data are fused through a weighting algorithm so as to reduce the false alarm rate; a temperature and humidity sensor dynamically adjusts a detection threshold value to adapt to different climate conditions, and an edge computing node is deployed with a lightweight machine learning model. Through multi-sensor data fusion and a weighting algorithm, the false alarm rate is reduced to be smaller than 0.1% per year, environment self-adaptive calibration and AI auxiliary decision making are performed, interference of alcohol, perfume and the like is effectively eliminated, different climate conditions are adapted, leakage judgment is completed at an equipment end through edge calculation, cloud delay is avoided, a multi-stage emergency strategy is provided, and intelligent safe ecology driven by the Internet of Things is constructed.

The invention relates to the technical field of gas detection, in particular to a gas detection system and method based on an AI technology, and the system comprises a differential sensing module, a drift compensation processor, a dynamic risk assessment unit and a cloud-edge collaborative learning framework. Compared with the prior art which adopts a single-sensor independent compensation scheme and has the defects that the false alarm rate is high and long-term drift is difficult to correct under environmental interference, the scheme innovatively introduces a dual-mode differential sensing architecture and an adaptive drift compensation algorithm, a reference sensor is packaged in an inert gas environment, and the reference sensor and a main sensor are subjected to real-time collaborative analysis; the pre-trained lightweight neural network is combined to dynamically eliminate temperature and humidity cross interference, the detection precision and stability under complex working conditions are remarkably improved, and the aging distortion problem of the semiconductor sensor is effectively solved.

The invention relates to the technical field of semiconductor gas sensors for gas detection, in particular to an in-situ construction method and application of a gas sensor for volatile aroma substance detection, and the in-situ construction method comprises the following steps: mixing an aqueous solution of zinc nitrate hexahydrate and an aqueous solution of 2-methylimidazole according to different molar ratios to obtain a precursor solution; upwards fixing a planar electrode on the surface of a glass slide, and then transferring the planar electrode into the precursor solution; carrying out hydrothermal reaction on the precursor solution at 90 DEG C for 4 hours, after the hydrothermal reaction is finished, cooling to normal temperature, taking out the glass slide, washing the surface of an electrode by using deionized water, removing impurities, and then carrying out drying treatment; calcining the obtained dried electrode in an air atmosphere at 500 DEG C for 2 hours to construct an in-situ growth semiconductor sensor; according to the present invention, the rapid sensing response on nine volatile aroma substances is achieved, and the excellent gas sensitive characteristic is represented in the gas sensitive research on the volatile substance ocimene in the volatile aroma substances.

The invention discloses a sensor for detecting gas based on a two-dimensional material, and relates to the technical field of semiconductor sensors and battery safety. In order to solve the problems that an existing lithium ion battery management system lags in early warning and a traditional sensor is difficult to integrate and not resistant to corrosion, flexible polyimide is used as a substrate of the sensor, a back gate type two-dimensional material field effect transistor serves as a core, and a gate dielectric layer is arranged between a gate and a two-dimensional material channel in a spaced mode. A functional modification layer is arranged on the surface of the channel to improve the gas recognition specificity, a breathable hydrophobic layer covers one side deviating from the gate dielectric layer, and the breathable hydrophobic layer is matched with a passivation layer and a sensing window to form anti-corrosion packaging. The sensor can be implanted into a battery, real-time in-situ detection of ppb-level trace characteristic gas is realized through an adsorption-charge transfer-field effect amplification mechanism, and the sensor is linked with a BMS (Battery Management System) to realize ultra-early warning of thermal runaway. The device has the advantages of flexibility, easiness in integration, high sensitivity, corrosion resistance and long service life, and the safety management level of the battery is greatly improved.

The invention relates to the field of semiconductor MEMS (Micro Electro Mechanical System) devices, and discloses a medium-high-entropy alloy air suction target material which is composed of a main element A, an element C and an element B. The content of the main element A is 25-40 at%, the content of the element B is 30-45 at%, and the content of the element C is 30-45 at%; the formula equation is as follows: A < 25-40 > B < 30-45 > C < 30-45 >; the main element A is selected from one or two of V and Co; the element C is selected from one or more of Fe, Pr, Y, Gd, Nd, Er, Sm and Ce. And the element B is selected from one or two of Ti and Zr. According to the invention, the problem of serious contradiction between the air suction performance and the mechanical property of the current semiconductor MEMS sensor packaging material is solved by utilizing the advantages of rich or multi-principal-element alloy, high mixing entropy and the like in the medium-high-entropy alloy.

The invention relates to the technical field of tea aroma detection, in particular to a noble metal-sensitized volatile aroma substance sensor construction and detection method, which comprises the following steps: dissolving zinc acetate dihydrate, urea and trisodium citrate dihydrate in deionized water to obtain a mixed precursor solution; controlling the hydrothermal reaction of the precursor solution; after naturally cooling to room temperature, washing, centrifuging, drying and calcining to obtain a zinc oxide material; the preparation method comprises the following steps: impregnating a zinc oxide material with deionized water, adding an ammonium carbonate solution while stirring, stirring, and then adding a noble metal solution to obtain a noble metal modified zinc oxide mixed solution; centrifuging, drying and calcining to obtain a powder zinc oxide loaded noble metal material; dissolving the zinc oxide loaded noble metal material in ethanol, performing ultrasonic treatment to form turbid liquid, and further dispensing the turbid liquid to the surface of a planar electrode to construct a semiconductor sensor for detecting tea aroma; the sensor prepared by the method has excellent sensing characteristics of high sensitivity, high stability and the like on tea aroma.

This semiconductor sensor (100) comprises: a semiconductor detection element (3); a detection chamber (7) to the inside of which the semiconductor detection element (3) is fixed; a signal terminal (11) that has one end side exposed to the inside of the detection chamber (7) and the other end side exposed to the outside from the detection chamber (7) and outputs an electric signal output from the semiconductor detection element (3) to the outside; a wire (10) that connects the semiconductor detection element (3) and a signal terminal exposure part (11a) that is a part on the one end side of the signal terminal (11) exposed to the inside of the detection chamber (7); and a protective film that continuously covers the semiconductor detection element (3), the wire (10), and the signal terminal exposure part (11a). The protective film is an inorganic barrier film (19).

The application provides a kind of deodorization equipment, including support frame and control module, the support frame is connected with support frame on buffer damping member, the right end of the support frame is provided with first purification part, the left end of the support frame is provided with second purification part, the air inlet of the first purification part is connected with air inlet pipe, the outer side of the air inlet pipe is provided with multi-modal perception module and environmental parameter acquisition module, the multi-modal perception module includes electrochemical gas sensor array for detecting the concentration of multiple specific gases, and metal oxide semiconductor sensor for detecting the intensity of environmental comprehensive odor;The environmental parameter acquisition module is used to collect environmental temperature and humidity data;The left of the support frame is provided with a controller, and the controller is provided with the control module;The application can realize real-time monitoring of environmental odor changes, adaptive adjustment of purification intensity, effective reduction of energy waste, improvement of deodorization efficiency and adaptation to various odor types.

The invention discloses a GIS partial discharge rapid positioning method based on a multi-normal projection principle, and relates to the technical field of partial discharge on-line monitoring, a three-dimensional photoelectric array formed by silicon optical semiconductor sensors is used for obtaining a partial discharge signal amplitude, a direction vector is constructed, and a unit direction is obtained through solving a local intersection point. And further combining with least square optimization of multi-unit rays to obtain initial position estimation of the partial discharge source. On the basis, an amplitude correction and iteration updating mechanism is introduced, observation data are corrected, and a real position is gradually approached, so that high-precision three-dimensional partial discharge source positioning in a complex electromagnetic environment is realized. Through the combination of the silicon optical sensor three-dimensional array and the improved multi-vector projection iterative algorithm, high-precision partial discharge positioning can be realized in a complex electromagnetic environment, the operation reliability and the operation and maintenance efficiency of equipment are remarkably improved, and the method has a wide engineering application prospect.

The invention discloses a multi-modal sensor array-based fire regulation field gas detection device and method, and particularly relates to the technical field of gas detection, the device comprises a detection groove disc, a wireless controller, an electrochemical sensor and a gas detection assembly; the gas detection assembly comprises a metal oxide semiconductor sensor, a carbon dioxide infrared sensor, a PID sensor, a temperature and humidity sensor, a gas pressure sensor, a plurality of positioning cylinders, two elastic sheets, a sliding column and a triangular guide block. According to the invention, the gas detection assembly is adopted and has the advantages of ensuring that each sensor can accurately detect different gases in turn according to a specified fire coordinate position and improving the accuracy of multi-modal array detection of fire regulation field gases, so that the problem that in the detection process of the multi-modal sensor array, the detection accuracy of the multi-modal sensor array is influenced due to limitation is solved. It is difficult to ensure that each sensor can accurately detect different gases according to a specified fire coordinate position, so that the accuracy of the whole detection result is influenced.

The utility model relates to the technical field of gas detection, in particular to an industrial gas detection device. According to the technical scheme, the device comprises a device base, a detection box is fixed to the upper end of the device base, a cover plate is fixed to the front end of the detection box through locking screws, a controller is installed on the rear side of the detection box, a detection air channel is formed in the detection box, detection air pipes are installed on the rear side of the upper end of the detection air channel, and the detection air pipes are linearly distributed; an electrochemical sensor, an infrared sensor and a semiconductor sensor which are used for detecting different gases are respectively mounted in the detection box, and the upper ends of the detection gas pipes extend out of the detection box. By means of sliding of the sliding block, gas can be guided into the detection gas pipe provided with the corresponding sensor for gas detection, special detection can be conducted on different kinds of gas, the detection accuracy is improved, before detection, gas in the detection gas channel can be emptied, the influence of residual gas on a detection structure is reduced, and the detection efficiency is improved. The detection accuracy is improved.

The invention provides a technology for identifying or quantifying allergens of pollen, mould, mites and the like. The detection device uses a plurality of semiconductor sensors. The plurality of semiconductor sensors exhibit relatively different response characteristics to the same gas composition. The detection device acquires the signal patterns detected by the plurality of semiconductor sensors, identifies or quantifies the allergen from the plurality of signal patterns, and outputs an identification or quantification result.

A device for determining measurement values describing the function of the lungs or the respiratory system of a patient includes a mouthpiece including a tube for introducing respiratory air and for sucking in air, and a gas measurement space. At least one of the following gas sensors is arranged in the gas measurement space: nitrogen monoxide sensor, carbon dioxide sensor, oxygen sensor, carbon monoxide sensor, multi-gas sensor, sensor for volatile organic compounds, alkane sensor, infrared sensor, fiber optic sensor, resistance sensor, and semiconductor sensor. The gas measurement chamber is separated by a closable opening into a first gas measurement chamber and a second gas measurement chamber, the second gas measurement chamber being closed or closable. The closable opening opens a flow path from the first gas measurement chamber into the second gas measurement chamber. A gas sensor is arranged in the second gas measurement chamber.

The application provides a PET detector. The PET detector comprises: a crystal array comprising a plurality of crystal units arranged in a single layer, the crystal units extending in a top-bottom direction and having a top surface, a bottom surface and a side surface between the top surface and the bottom surface; a light reflection film arranged on a surface of at least one crystal unit in the plurality of crystal units; and a semiconductor sensor array comprising a plurality of semiconductor sensors, only part of the crystal units in the crystal array being coupled with the semiconductor sensors, the number of the crystal units in the crystal array being greater than the number of the semiconductor sensors in the semiconductor sensor array. By arranging a light splitting structure on the crystal units, the transmission distance of photons can be effectively shortened relative to arranging a light guide sheet between the crystal array and the semiconductor sensors, and thus the light transmission loss caused by the light guide sheet can be avoided, so that the resolution of the PET detector can be improved.

A semiconductor-based sensor to detect light angle of incidence includes a semiconductor light sensor element and a patterned spatially inhomogeneous dielectric layer disposed over the semiconductor light sensor element. Characteristically, spatial inhomogeneity of the patterned spatially inhomogeneous dielectric layer is optimized to provide a maximized electric field in the semiconductor light sensor element such that the semiconductor-based sensor is operable to detect one or more incident angles of light at a predefined wavelength or wavelengths of light.

The present invention discloses an in-situ infrared dynamic sensing and computing integrated array based on ferroelectric capacitors, belonging to the field of semiconductor sensors. The array is composed of a plurality of pixels, each pixel is composed of a plurality of sensing and computing integrated devices, wherein the sensing and computing integrated devices at the same position in different pixels are connected in parallel by wiring, and the sensing and computing integrated devices are deep-grooved ferroelectric capacitors composed of a bottom electrode, a top electrode, and a ferroelectric dielectric material between the two electrodes on a deep-grooved insulating substrate. The ferroelectric dielectric material produces a pyroelectric charge response related to polarization intensity as the temperature changes. The present invention realizes zero-power in-situ infrared dynamic sensing, reduces system power consumption and delay overhead; and realizes weighted information perception, realizes four-quadrant multiplication of perception information and weights within a single device, and realizes complex in-sense computing functions.

The present invention relates to the technical field of semiconductor sensor base detection, and discloses a semiconductor sensor base detection device and detection method. An electric telescopic rod is fixed in the middle of the bottom of the top plate, and a protective cover is fixedly installed on the output end of the electric telescopic rod. A detection piece is provided at the top of the protective cover, and stress points are evenly distributed on the bottom of the detection piece. A clamping assembly is installed on the top of the turntable, and the size of the protective cover corresponds to that of the base body. The detection piece and the base body are matched. The diameter size of the base body, whether the jack aperture has deviation, and whether the outer edge of the base body has defects or burrs can be measured by the distribution change of the stress points. The surface of the base body can be intuitively detected, errors in manual detection can be avoided, and detection accuracy can be improved. The outer edge of the mounting seat can be scraped and cleaned by multiple sets of scrapers, and the base body can be trimmed in real time.

This invention relates to a two-dimensional magnetic sensor based on a two-dimensional electron gas channel structure and its fabrication method, belonging to the field of semiconductor sensor technology. Technical solution: A buffer layer, a channel layer, and a barrier layer are sequentially grown on a substrate. The channel layer and the barrier layer form a heterojunction structure layer. A two-dimensional electron gas is induced at their interface by polarization charges. A magnetostrictive layer is placed above the barrier layer, and electrodes Sx1, Sx2, Sy1, and Sy2 are placed above the magnetostrictive layer. Electrodes Sx1, Sx2, Sy1, and Sy2 all extend from above the magnetostrictive layer to the heterojunction structure layer. Electrodes Sx1 and Sx2 are symmetrically arranged, as are electrodes Sy1 and Sy2. Beneficial effects: The two-dimensional magnetic sensor based on a two-dimensional electron gas channel structure described in this invention modulates the polarization effect of a single III-V group semiconductor heterojunction magnetic sensor. It can achieve high sensitivity when measuring magnetic fields parallel to the device direction under harsh environments, and the simple structure reduces the device size and facilitates integration.

Intelligent system for real-time detection and analysis of volatile organic compounds (VOCs) contained in exhaled breath of a patient, able to detect the imprint of the respiratory volaboloma, characterized in comprising : - a nasal electronic device (100) comprising a nasal mask (101) having at least at least one inlet opening (101a) for air and at least one outlet opening (101b) for exhaled breath; - at least one electrochemical molecule detector (102) comprising at least one semiconductor sensor able to detect volatile organic compounds, connected to the outlet opening (101b) of the nasal mask (101); - at least one processing unit able to analyze data detected by the at least one semiconductor sensor in real time and to control respiratory cycles while measuring; - an integrated artificial intelligence module, able to identify patterns in data obtained from the exhaled breath, and to correlate said patterns with suspected physiological conditions; wherein said nasal electronic device (100) comprises : - a conveyor tube (104) bent at an angle a connected to, or integrated with, the nasal mask (101) so that in correspondence with one end said conveyor tube (104) is connected to the outlet opening (101b), able to ease the passage of VOCs inside it.

The utility model discloses a multi-channel mixed gas detection modularized semiconductor sensor array, which comprises a bottom plate, a two-way screw rod is rotatably arranged on the upper end surface of the bottom plate through a connecting frame, a rocking wheel is fixedly arranged on the outer wall of the two-way screw rod, and two moving blocks are arranged on the outer wall of the two-way screw rod through threads of a limiting mechanism. The upper end faces of the two moving blocks are fixedly provided with first connecting frames, and the interiors of the two first connecting frames are rotationally connected with second connecting frames through connecting mechanisms. According to the utility model, the prismatic rod, the clamping plates, the springs and other components are arranged, under the action of the elastic force of the springs, the clamping plates can be tightly attached to the two sides of the detection module and firmly fixed in the mounting groove, when the detection module needs to be replaced or maintained, an operator only needs to overcome the elastic force of the springs and push the clamping plates aside towards the two sides, and then the detection module can be replaced or maintained. And the operation is simple and convenient, the maintenance time of the equipment is greatly shortened, and the maintenance cost is reduced.

This application discloses the application of a charge-transfer coated semiconductor material in a gas-sensitive sensor, belonging to the field of semiconductor sensor material technology. The application includes contacting the charge-transfer coated semiconductor material with the gas to be detected; the charge-transfer coated semiconductor material is a gas-sensitive material formed by coating an organic component onto the outer surface of an initial semiconductor through charge transfer. This application utilizes the presence of charge transfer interactions to improve the carrier mobility and charge-separated state lifetime of the semiconductor, thereby improving gas detection sensitivity and reducing operating temperature. Furthermore, it utilizes the redox properties of the organic coating component outside the semiconductor to improve gas selectivity. This application retains the basic properties of the initial semiconductor while reducing application costs through simplified material preparation, making it universally applicable.

The present invention discloses a multi-component gas detection method and system based on artificial olfaction. The system includes an olfactory sensor array, a data acquisition module, a host computer control center, a pattern recognition algorithm module, and a visual interface. The olfactory sensor array is composed of a variety of metal oxide semiconductor sensors with different response characteristics, which can collect multi-dimensional gas information of the test environment. The data acquisition module collects the sensor information and transmits it to the host computer control center, which is then analyzed by an independent pattern recognition algorithm module that fully utilizes the cross-response of the sensors. This invention can not only realize the qualitative and quantitative identification of pure component gases, but also demix and identify mixed gases. It has a wide range of applications and can be widely used in safety detection scenarios such as the chemical industry, pharmaceutical industry, tunnel operations, and municipal gas.

The invention relates to the technical field of semiconductor sensor detection, and discloses a semiconductor sensor detection device and method, an extrusion assembly is fixedly assembled in a conveying assembly, detection assemblies are uniformly and fixedly assembled on the conveying assembly, and a driving assembly is fixedly assembled on the conveying assembly. The extrusion assembly cooperates with the conveying assembly to complete extrusion of the detection assembly, so that the detection assembly can effectively support, clamp and limit the semiconductor sensor, and can complete length detection of the semiconductor sensor; the limiting area of the semiconductor sensor can be adjusted first according to the actual length size of the semiconductor sensor, the orientation state of the pins of the semiconductor sensor can be detected, and the clamping application range of the semiconductor sensor is widened. The driving assembly is controlled to act according to the length size of the semiconductor sensor to adjust the angle position of the CCD camera, shooting detection of the semiconductor sensor is better completed, and the quality inspection accuracy is improved.

A thermal conductivity gas analyzer according to the present invention comprises: a plurality of cells respectively housing resistors constituting a Wheatstone bridge circuit; a first flow path section through which a sample gas or a reference gas flows; a second flow path section provided so as to branch off of the first flow path section; and a supply gas switching unit connected to the first flow path section. Each resistor is constituted by a thermal conductivity thin-film sensor or a thermal conductivity semiconductor sensor. The plurality of cells include measurement cells that respectively house resistors located on one pair of opposite sides of the Wheatstone bridge circuit. The second flow path section connects to the measurement cells. The supply gas switching unit alternately supplies the sample gas and the reference gas to the first flow path section.

To provide a method for testing a semiconductor sensor of a gamma camera.SOLUTION: In order to test or manufacture a semiconductor-based detector in SPECT, an interposer 106, such as an elastomer device with a conductor, is sandwiched between a carrier and a semiconductor detector, the conductor enables temporary, separate connection of a detector electrode to a signal processing circuit, to test the detector operating using the signal processing circuit, and the interposer 106 provides separate electrical connection for testing.SELECTED DRAWING: Figure 1

The present invention discloses an RFID sensor for detecting water pipe leakage, comprising a first RF transceiver, a second RF transceiver, a coding module and a sensing module. When used for water pipe leakage detection, the sensing module detects the current state of the detected water pipe in real time and generates sensing information representing the current state of the water pipe. The first RF transceiver receives the RF signal and transmits it to the coding module. The coding module loads the coding information into the RF signal and sends it to the sensing module. The sensing module loads the sensing information into the RF signal and sends it to the second RF transceiver. The second RF transceiver transmits the RF signal with the coding information and the sensing information into free space. The advantage is that it is implemented using a chipless RFID tag, which can replace traditional semiconductor sensors and be arranged as a sensing node under the water pipe to detect the state of the water pipe. In addition, under large-scale deployment, the cost is low and no complex connection lines are required between the terminal processing system, which has great application prospects.

The present application discloses an alcohol detection method, apparatus, equipment and storage medium based on dual sensors, and relates to the technical field of drunk driving detection. The present application includes: obtaining an electrochemical sensor response value collected by an electrochemical sensor and a semiconductor sensor response value collected by a semiconductor sensor, obtaining an ambient temperature value collected by a temperature sensor, determining a temperature range corresponding to the ambient temperature value, and when the ambient temperature value is in a first temperature range, correcting the electrochemical sensor response value based on the semiconductor sensor response value to obtain a corrected electrochemical sensor response value, and obtaining an alcohol detection result according to the corrected electrochemical sensor response value, thereby improving the accuracy of the alcohol lock under high and low temperature conditions.

This invention discloses a beam corona detection device and method based on a semiconductor sensor. The device includes a semiconductor sensor, a driving module, a data acquisition module, and a processing module. A first end of the driving module is connected to the semiconductor sensor, and a second end of the driving module is connected to a first end of the processing module. The driving module is used to move the semiconductor sensor along a first direction to scan the beam corona. The second end of the semiconductor sensor is connected to the data acquisition module. The semiconductor sensor generates a corresponding radio frequency (RF) signal based on the beam corona scanning signal. The data acquisition module receives the RF signal and transmits it to the processing module. The processing module calculates the beam corona distribution based on the RF signal. The beam corona detection device provided by this invention obtains the beam corona distribution by detecting the beam corona using a semiconductor sensor. It not only has a sufficiently high signal-to-noise ratio but can also achieve a signal-to-noise ratio greater than 10. 6 The measurement dynamic range.

The invention relates to the technical field of semiconductor sensors, and discloses a semiconductor gas sensor and a manufacturing method thereof.The semiconductor gas sensor comprises a substrate, a thin film layer and a heating assembly; wherein the thin film layer is arranged at the upper end of the substrate, the heating assembly is embedded in the thin film layer, the thin film layer is provided with a wire bonding hole corresponding to the heating assembly, a part of the heating assembly is exposed through the wire bonding hole, the thin film layer is provided with a through hole, the position of the through hole is kept away from the heating assembly, and the heating assembly is arranged in the through hole. The substrate is provided with a slotted hole, and the through hole is communicated with the slotted hole. Through the thin film structure with the holes, the sensor is higher in packaging adaptability, higher in reliability and better in long-term robustness on the basis of ensuring the structural integrity.

A computed tomography (CT) imaging system includes a detector array configured to detect X-ray projections. The detector array includes a semiconductor sensor array having a plurality of sensors. Each sensor includes a first surface, a second surface, a substrate, and a readout electronics unit. The first surface has a high-voltage bias and includes a first dopant and can receive the X-ray projections. The second surface is opposite the first surface and includes a plurality of sensing regions of a second dopant. The second surface has a low-voltage bias and is configured to collect charges from the X-ray projections. The substrate includes a semiconductor material with a resistivity of at least five kiloohm centimeters and is positioned between the first and second surfaces. The readout electronics unit is positioned between the sensing regions. A surface area of the readout electronics unit is less than one percent of the second surface.