40 results about "Semiconductor sensor" patented technology

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 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 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.

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.

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 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.

The application discloses a mixed gas sensor monitoring data processing method and system, relates to the technical field of gas detection and sensor data processing, and is applied to a gas monitoring device including a metal oxide semiconductor sensor array. The method acquires multi-path response data generated by the sensor array for a mixed gas containing hydrogen, methane and other to-be-detected gas components, extracts early transient characteristics before a steady-state response is formed, and determines a risk preliminary screening result according to the early transient characteristics; when the risk preliminary screening result meets a cloud analysis triggering condition, array comprehensive response characteristics including steady-state response characteristics, transient response characteristics and cumulative response characteristics are generated and sent to a cloud device. The cloud device performs feature alignment and nonlinear concentration decoupling on the array comprehensive response characteristics, and returns concentration estimation results of each gas component. The scheme can consider edge rapid screening, cloud fine analysis and communication cost control, and improves mixed gas monitoring reliability.

The invention provides a pulse signal output method and device for detecting space particles, and the method comprises the steps: inputting a charge pulse signal generated when at least one semiconductor sensor detects the impact of the space particles into an adjustable gain pre-amplification module, and converting the charge pulse signal into a voltage signal for output; performing parallel processing on the converted voltage signal, wherein the parallel processing comprises slow forming processing and fast forming processing; on the basis of a first branch pulse signal obtained by the slow shaping processing, completing obtaining of a pulse quantized value corresponding to the first branch pulse signal; comparing a second branch pulse signal obtained by the fast forming processing with a preset threshold value so as to output a trigger signal; and the quantized value in each channel is output in series through a multi-channel analog switch and address gating control, and a trigger counting signal system is output. According to the invention, two detection tasks share one reading circuit, and parallel processing and serial control are fused, so that the signal processing efficiency is effectively improved.

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 utility model discloses a vacuum detection device for hydrogen leakage detection, particularly relates to the technical field of hydrogen leakage detection, and comprises a vacuum box body, one side of an inner cavity of the vacuum box body is provided with a vacuum cavity, and the other side of the inner cavity of the vacuum box body is provided with an equipment cavity. According to the utility model, firstly, hydrogen equipment to be detected or a sample piece to be detected is placed in the vacuum cavity, the vacuum pump is started to vacuumize the interior of the vacuum cavity, and whether the interior of the vacuum cavity leaks gas or not is judged by observing whether a detection value of the pressure sensor changes or not after vacuumizing is finished; then hydrogen in the high-pressure hydrogen cylinder is controlled to be input into hydrogen equipment to be detected or a sample piece to be detected, vacuumizing is conducted after a certain time, the hydrogen content is detected through the semiconductor sensor, whether leakage exists or not can be judged, and detection in the mode is not affected by the external environment; the method can be used for testing in any environment, and the detection sensitivity and accuracy can be improved.

The utility model discloses a kind of storage box for semiconductor SemiSense sensor, it is related to the field of semiconductor, to solve the problem of traditional storage box cleanliness, charging mode is inconvenient, poor compatibility and inefficient management.The storage box includes box base, box cover, wireless charging assembly, RFID reading device, sealing ring and adaptation component;Box cover is hinged with box base, sealing ring is fixed in the closed adhering surface of both, wireless charging assembly and RFID reading device are installed in the inside of box base, adaptation component includes buffer sponge block and upper pressing plate, both are oppositely arranged to adapt different sensor.The utility model realizes wireless non-contact charging, guarantees Class1 level cleanliness, realizes intelligent identification management by RFID, adapts multiple specifications sensor, improves FAB factory production management efficiency and sensor storage security.

This invention relates to the fields of semiconductors, sensors, and power electrical appliances, and provides a resin gold paste, its preparation method, and a conductive film. The resin gold paste provided by this invention comprises the following components by weight percentage: 30%–50% organogold compound; 20%–40% organic carrier; 10%–30% first organic solvent; 0.1%–1% organonoble metal compound; 0.1%–1% organobase metal compound; and 0.2%–3% adhesion promoter. This invention adds a specific composition of adhesion promoter to the resin gold paste, effectively improving the interfacial bonding between the gold film and the substrate, and enhancing the adhesion of the gold film. The addition of organonoble metal and organobase metal compounds results in a bright and dense surface after sintering of the resin gold paste. The resin gold paste provided by this invention possesses excellent printability and can be widely used in electronic components such as thermal printhead electrodes and capacitive sensors, showing broad application prospects.

The invention relates to the technical field of gas detection, in particular to a semiconductor sensor fault detection protection circuit and method.The circuit comprises a processor, a sensor, a control and collection module and a power module, and the control and collection module comprises a heating electrode collection end, a heating electrode control end and an internal semiconductor collection end; the heating electrode acquisition end is electrically connected with the processor and used for transmitting real-time heating voltage of the heating electrode to the processor, the internal semiconductor acquisition end is electrically connected with the processor and used for transmitting real-time detection voltage of the internal semiconductor to the processor, and the heating electrode control end is connected with the processor and used for controlling whether the heating electrode works or not. The processor is used for judging the circuit state of the heating electrode according to the real-time heating voltage in the non-working state and judging the circuit state of the internal semiconductor according to the real-time detection voltage at different temperatures, the situation that fault diagnosis is easily interfered by factors such as temperature and gas concentration when a single threshold value is used for fault diagnosis is avoided, and therefore the accuracy of fault diagnosis is improved.

The invention provides an inner wall embedded type multi-dimensional state monitoring system for a GIS transformer. Comprising a transformer shell integrated with a comprehensive information management system, a temperature difference heating module for providing direct current for a multi-source synthesis energy management module, a piezoelectric module for rectifying, boosting and storing energy through an energy management system of the multi-source synthesis energy management module, and an ultrasonic partial discharge detection sensor deposited on the inner wall of the transformer shell, the temperature sensor and the SF6 degradation gas metal oxide semiconductor sensor are used for acquiring signals, and the main control module is used for processing the acquired signals. According to the invention, synchronous acquisition of electric-acoustic-thermal-chemical four-dimensional information in the GIS transformer is realized, all the sensors are deposited on the inner wall of the transformer to improve the accuracy and confidence of diagnosis, and the vibration-thermal energy comprehensive energy supply system solves the problem of stable energy supply of the internal sensors. And a feasible scheme is provided for full-life-cycle intelligent monitoring of the equipment.

The application belongs to the technical field of sensing, and particularly relates to a semiconductor sensor capable of rapidly identifying gas molecules and a preparation and use method thereof. A gas sensor based on an oxide nanorod sensitive film is obtained by vacuum glancing angle sputtering of a metal oxide nanorod array film on a low-thermal-conductivity insulating substrate plated with an interdigital electrode; the sensitive film is simultaneously used as a heating layer, the working temperature of the sensitive film is controlled by Joule heat generated by self-heating of the sensitive film, a transient response signal of the sensor under self-heating modulation is collected, a machine learning algorithm is used to extract features of different gas molecules, and gas molecule identification application is performed. Since the sensitive film is simultaneously used as a heating film, the heat conduction rate is fast, the sensor can reach a set temperature within ms, and therefore, rapid self-heating modulation can be performed for molecule identification, meeting the demand of rapid identification of target gas under the condition of rapid dynamic change of outdoor polluted gas. In addition, the preparation method is compatible with conventional micro-nano etching process, and meets the demand of uniformity and batch preparation of the sensor.

A semiconductor radiation sensor device for characterizing X-ray and / or gamma-ray radiation has: a converter with physically spaced semiconductor sensors to convert incident X-ray and / or gamma-ray photons into electron-hole pairs; an electric field generator to apply an electric field to the sensors, thereby creating signals representative of a movement of charge carriers in the sensors; a readout circuitry to read out the signals; and a processing unit connected to the readout circuitry. The processing unit estimates an interaction time and a three-dimensional interaction position of an event in the converter by processing the sensors signals. The processing unit has an artificial neural network trained to generate the estimated interaction time and the three-dimensional interaction position of the event based on a model of physical and geometrical sensors properties and based on simulated time-varying sensors charges. A method of training an artificial neural network to generate a three-dimensional characterization is also provided.

The invention relates to a semiconductor sensor test device which comprises a rack, a test lifting module arranged on the rack and capable of vertically lifting and a test switching module capable of transversely translating, a test machine table is arranged on the rack, an upper cavity mounting plate is connected to the test lifting module, an upper cavity assembly is mounted on the upper cavity mounting plate, and a lower cavity assembly is mounted on the test switching module. The test switching module is provided with a lower cavity assembly, the upper cavity assembly is provided with an upper chamber, the lower cavity assembly is provided with a lower chamber, and after the lower cavity assembly translates to the position below the upper cavity assembly, the upper cavity assembly descends to be in press fit with the lower cavity assembly, so that the upper chamber and the lower chamber are combined to form a closed test chamber; a temperature adjusting assembly is arranged in the testing cavity, a pressure adjusting assembly communicated with the interior of the testing cavity is arranged in the rack, and a side clamping pressure maintaining assembly clamping the upper cavity assembly and the lower cavity assembly from the two sides is further arranged on the testing lifting module.

The invention discloses an SF6 combined gas charging device and a leakage detection method thereof, and the device comprises a cabinet body which is internally provided with an inlet gas chamber module, and the inlet gas chamber module is connected with a pressure reduction outlet module; a plurality of gas source inlets are formed in the two opposite side walls of the inlet gas chamber module respectively to form a plurality of channels used for being connected with an external gas source, and the pressure reduction outlet module is provided with a plurality of outlet channels used for outputting gas; gas leakage is detected based on the semiconductor sensor, gas leakage risk prompting is achieved, and on-site safety protection is enhanced; the gas cylinder pressure is monitored in real time, and timely replacement is facilitated when the pressure is insufficient; the high-pressure one-way valve can prevent gas from being reversely inflated, and it is ensured that the inflation process is safe and controllable.

The invention belongs to the technical field of gas sensors, and particularly relates to a bimetallic conductive MOF-based gas sensitive material and a preparation method thereof. The method comprises the following steps: preparing a bimetallic conductive MOF-based material with a nanorod-shaped structure and an MXene substrate material with an organ-shaped sheet-shaped structure, mixing the bimetallic conductive MOF-based material and the MXene substrate material, and carrying out a composite reaction to prepare the c-MOF / MXene gas sensitive material with nanorods attached to the organ-shaped sheet-shaped surface. In addition, the invention also provides a semiconductor sensor, the semiconductor sensor comprises an electrode plate and a gas-sensitive layer attached to the electrode plate, and the gas-sensitive layer is prepared from the gas-sensitive material. The semiconductor sensor obtained on the basis of the c-MOF / MXene gas-sensitive material can work at room temperature, is relatively high in response sensitivity, and also has good long-term stability to NH3.

A detector for detecting radiation is disclosed. In one configuration, the detector has a sensing element including a semiconductor sensor substrate (402) configured such that impact of target radiation generates charge carriers in the sensor substrate. A readout circuit provides an output in response to the charge carriers generated in the sensor substrate. The sensor substrate includes a low bandgap layer (408) and a high bandgap portion (409).

A method and structure providing an optical sensor having an optimized Ge—Si interface includes providing a substrate having a pixel region and a logic region. In some embodiments, the method further includes forming a trench within the pixel region. In various examples, and after forming the trench, the method further includes forming a doped semiconductor layer along sidewalls and along a bottom surface of the trench. In some embodiments, the method further includes forming a germanium layer within the trench and over the doped semiconductor layer. In some examples, and after forming the germanium layer, the method further includes forming an optical sensor within the germanium layer.

A complementary metal-oxide-semiconductor sensor array includes an active sensing area of pixels arranged in an array with a pitch, each pixel including an exposed surface electrode alongside switches and logic gates, and non-overlapping clocks configured to rapidly charge and discharge the exposed surface electrode, wherein control signals steer a switched output current between shared column outputs.

The invention discloses a hydrogen leakage alarm system for hydrogen power driving equipment, which adopts a hydrogen sensitive element based on an electrochemical principle, and because the intrinsic reaction speed of the hydrogen sensitive element is far higher than that of a traditional semiconductor sensor, early leakage early warning can be realized, and the response speed is improved; the MCU adjusts the heating power of the heating element based on the environment temperature and a preset temperature control algorithm so as to control the heating temperature of the heating element, so that the MCU can dynamically adjust the heating power applied to the heating element according to the environment temperature fed back by the temperature sensor instead of continuous full-power heating, and the power consumption is greatly reduced; according to the technical scheme of the invention, the alarm counter is subjected to integral judgment instead of single-point instantaneous judgment, so that only continuously existing leakage signals can enable the alarm counter to accumulate to the alarm triggering level, transient environmental interference or random noise is effectively filtered out, the anti-interference capability and reliability are improved, and the occurrence of false alarm or missing alarm is reduced.

An electronic device may include an ambient light sensor or other semiconductor sensor. The sensor may produce signals in response to light incident on the electronic device and therefore incident on the sensor. In some cases, components within the electronic device, such as infrared components, or external light sources may interfere with the operation of the sensor. Therefore, the sensor may include a filter that transmits at least a portion of visible light while blocking infrared light. Because light may be incident on the electronic device from a variety of angles, a diffuser in the sensor may scatter the light into a desired angular distribution. To ensure that infrared light is blocked regardless of the angle of the incident light, the filter may include both thin-film dielectric layers and metal layers. The metal layers may be interleaved with the thin-film dielectric layers.