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125 results about "Sensor field" patented technology

Gait sensing unit of triboelectric nano generator based on liquid metal / PDMS porous sponge and preparation method of gait sensing unit

The invention discloses a gait sensing unit of a triboelectric nano generator based on liquid metal / PDMS porous sponge, and relates to the field of gait sensors, and the sensing unit with high porosity, flexibility and durability is prepared through a template method. A white granulated sugar template is adopted to construct a three-dimensional communicated porous structure, so that uniform dispersion of LM in a PDMS matrix is realized, and the technical problem that low density and high sensitivity of traditional TENG are difficult to consider at the same time is solved. The preparation method comprises the steps of mixing and stirring, template infiltration, curing molding, template dissolution and the like, flexible sensors with thousand secondary cycle stability can be produced in batches, and the flexible sensor is suitable for wearable health monitoring equipment.
Owner:FUZHOU UNIV

Flat three-dimensional acceleration and three-dimensional force composite sensor and detection method thereof

The invention relates to a flattened three-dimensional acceleration and three-dimensional force composite sensor and a detection method thereof, and belongs to the field of sensors. According to the technical scheme, the flattened three-dimensional acceleration and three-dimensional force composite sensor comprises a force sensor module and an acceleration sensor module, the force sensor module comprises four shear effect force detection elements and four longitudinal effect force detection elements, and the four shear effect force detection elements and the four longitudinal effect force detection elements are coplanar. The acceleration sensor module comprises four shear effect acceleration detection elements and four longitudinal effect acceleration detection elements, and the four shear effect acceleration detection elements and the four longitudinal effect acceleration detection elements are coplanar. According to the scheme, the sensitive elements with the longitudinal effect and the shear effect are combined, three-dimensional detection is achieved through the thickness of the single-layer sensitive element, flattening of the sensor is achieved through single-layer arrangement of the sensitive elements, thermal expansion and stress are greatly reduced in the installation direction, and the detection precision is guaranteed.
Owner:SHANDONG LIANS INTELLIGENT TECH CO LTD

All-digital PVT sensor based on ring oscillator

The invention discloses an all-digital PVT sensor based on a ring oscillator, and relates to the field of PVT sensors, the all-digital PVT sensor comprises a process sensing circuit, a voltage sensing circuit and a temperature sensing circuit, the process sensing circuit comprises a process detection ring oscillator, the voltage sensing circuit comprises a voltage detection ring oscillator, and the temperature sensing circuit comprises a temperature detection ring oscillator. The temperature sensing circuit comprises a temperature sensitive ring oscillator; under the control of an enable signal, the process detection ring oscillator, the voltage detection ring oscillator and the temperature-sensitive ring oscillator start oscillation, and the process corner, the temperature and the power supply voltage of the detected chip are determined based on the oscillation frequencies of the process detection ring oscillator, the voltage detection ring oscillator and the temperature-sensitive ring oscillator. The PVT sensor is completely realized based on a digital circuit, an additional analog module does not need to be introduced, the area overhead is greatly reduced, and the PVT sensor has remarkable area advantage and structural simplicity while the high-precision detection capability is maintained.
Owner:QUANLI MICROELECTRONICS (WUXI) CO LTD +1

Self-powered flexible sensor and preparation method thereof

The invention discloses a self-powered flexible sensor and a preparation method thereof, and belongs to the field of electronic skin, man-machine interaction, flexible electronic devices and sensors. The invention relates to a cellulose acetate-based ionic gel self-energized flexible sensor which is prepared from cellulose acetate, ionic liquid, a polymer monomer, a cross-linking agent and an initiator and has good mechanical property and antibacterial property, the cellulose acetate enhances the mechanical property of the gel through non-covalent crosslinking, and the ionic liquid plays a conductive role. The flexible sensor has good conductivity, high sensitivity and stability, and can be stretched, twisted and bent. Meanwhile, the high transparency and excellent biocompatibility can be realized, so that the electronic skin can be used as the electronic skin for multifunctional perception and integrated application. The material is environment-friendly, the preparation method is simple, the operability is high, the application field is wide, and the prospect is wide.
Owner:SICHUAN UNIV

Force and three-dimensional acceleration compound sensor and method of use thereof

ActiveCN122084046BVertical vibrationImpact
The application is a kind of force and three-dimensional acceleration composite sensor and its using method, belongs to composite sensor field. Its technical scheme is, a kind of force and three-dimensional acceleration composite sensor, including force detection component and three-dimensional acceleration detection component, force detection component includes annular force core body electrode column, and lower quartz ring and upper quartz ring are respectively arranged on its upper and lower ends, impact platform is arranged above the upper quartz ring, and the lower quartz ring is attached to the base;Three-dimensional acceleration detection component is located inside annular force core body electrode column, including center integrated column, and four horizontal vibration arms and multiple vertical vibration arms are arranged on the outer periphery of the center integrated column, and acceleration detection unit is arranged on the end of each vibration arm away from the center integrated column. The sensor integrates force and three-dimensional acceleration measurement function, can synchronously collect two kinds of signals, the annular structure and the internal setting improve the protection to acceleration detection component, the cantilever structure converts impact force into vibration, reduces the impact suffered by detection unit, and is suitable for instantaneous high impact force working condition.
Owner:SHANDONG LIANS INTELLIGENT TECH CO LTD

A force and three-dimensional acceleration composite sensor and its application method

This invention relates to a force and three-dimensional acceleration composite sensor and its application method, belonging to the field of composite sensors. The technical solution is as follows: a force and three-dimensional acceleration composite sensor includes a force detection component and a three-dimensional acceleration detection component. The force detection component includes a ring-shaped force core electrode post with a lower quartz ring and an upper quartz ring at its upper and lower ends, respectively. An impact platform is located above the upper quartz ring, and the lower quartz ring is attached to a base. The three-dimensional acceleration detection component is located inside the ring-shaped force core electrode post and includes a central integrated post. Four horizontal vibrating arms and multiple vertical vibrating arms are arranged around the central integrated post. An acceleration detection unit is located at the end of each vibrating arm furthest from the central integrated post. This sensor integrates force and three-dimensional acceleration measurement functions, and can simultaneously acquire two types of signals. The ring structure and internal design enhance the protection of the acceleration detection component, and the cantilever structure converts impact force into vibration, reducing the impact on the detection unit, making it suitable for instantaneous high-impact conditions.
Owner:SHANDONG LIANS INTELLIGENT TECH CO LTD

MEMS sensor air pressure drift pre-calibration method based on outdoor cold state environment

The invention relates to the field of MEMS sensors, and discloses an MEMS sensor air pressure drift pre-calibration method based on an outdoor cold environment, and the method comprises the following steps: S1, low air pressure environment construction and natural recovery, and S2, dynamic data synchronous acquisition. Pollution of vibration of the low-pressure box to calibration data of the sensor is fundamentally eliminated, the purity of the calibration data is ensured, the air pressure drift correction coefficient obtained through fitting truly reflects the physical relation between air pressure and sensor output, and the authenticity and accuracy of the calibration coefficient are remarkably improved. Aiming at the problem that the calibration process in the prior art is not natural, the air pressure natural recovery process is closer to the air pressure change scene experienced by the sensor during actual outdoor application, so that the generalization ability and the compensation effect of the calibrated air pressure coefficient in the actual environment are better, and the applicability problems that the precision required by a laboratory is high and the field error is large are effectively solved.
Owner:SHENZHEN BEIDOU COMM TECH CO

Oil well load and displacement wireless integrated sensor

The utility model discloses a kind of oil well load and displacement wireless integration sensor, belong to load sensor field, including suspender and load sensor body, the top of the suspender is fixedly connected with two mounting plates, the both sides of load sensor body outside are fixedly connected with slide bar, two slide bars are respectively in the middle portion of two mounting plates and are slidably connected, in the scheme, load sensor body is positioned quickly by the sliding cooperation of slide bar and mounting plate, and rotation handle can complete limit fixing, when disassembling, limit block is separated from limit hole by pulling handle, and it can be removed, without complex tool and professional skill, substantially shorten installation and replacement time, reduce field operation intensity, in addition, the clamping of safety block and handle forms double insurance, even if one spring fails, still can prevent sensor body accidental drop;Steel wire rope and hanging block evenly disperse load, play auxiliary load-bearing role when suspender is under abnormal stress, reduce equipment damage and safety accident risk.
Owner:SHAANXI YANCHANG PETROLEUM GRP

Grille guards and associated systems and methods

A grille guard system, comprising a grille guard, a first latch, and a second latch. The first latch comprising a handle, a cam assembly, a backplate comprising a U-bolt, and a first latch housing. The second latch comprising a handle, a cam assembly, a backplate comprising a U-bolt, and a second latch housing. A lift assist system in operational communication with the grille guard assembly. A sensor cap comprising an angled opening configured to be placed over a vehicle sensor and constrain the sensor field of view.
Owner:HOLT SALES & SERVICE LLC

A method and system for single-axis jump correction of a MEMS sensor

This invention relates to the field of MEMS sensors and discloses a method and system for correcting single-axis abrupt changes in MEMS sensors, including the following steps: S1, obtaining the local gravitational acceleration reference value g at the deployment location of the target MEMS sensor; In this invention, through a dual judgment mechanism of modulus deviation and inter-axis correlation coefficient, it is possible to accurately distinguish between interference abrupt changes and real motion. Modulus deviation is used to initially screen abnormal data, while inter-axis correlation coefficient further verifies the authenticity of the abrupt change, effectively avoiding the problem of incorrect correction caused by relying on only a single indicator in the prior art. Furthermore, based on the physical law of conservation of the three-axis acceleration vector sum under static measurement, the abrupt axis is corrected using stable data of the other two axes, and an inter-axis coupling correction factor is introduced to compensate for manufacturing process deviations. The corrected data has high accuracy, and the total modulus deviation can be stably controlled within a preset threshold range, significantly improving the data accuracy of MEMS sensors in outdoor static measurement scenarios.
Owner:SHENZHEN BEIDOU COMM TECH CO

A sensor drift correction method and system based on transfer learning

This invention relates to the field of sensors and discloses a sensor drift correction method and system based on transfer learning, comprising the following steps: S1, collecting sensor data, including triaxial acceleration data, temperature, humidity, and air pressure environmental parameters; S2, calculating the magnitude of the triaxial composite vector. In this invention, a zero-point mapping model is constructed by using Gaussian process regression. The combined kernel function of periodic kernel, linear kernel, and RBF kernel can simultaneously capture the periodic fluctuations of environmental factors, the long-term trend of sensor aging, and short-term random noise. The maximum mean difference loss function is used to achieve adaptive distribution alignment between the source domain and the target domain, enabling the model to quickly adapt to the target domain. At the same time, a slope intercept joint judgment matrix is ​​introduced to achieve accurate differentiation between zero-point drift and real motion and tilt events, with an accuracy of over 96%. This effectively avoids measurement distortion caused by miscompensation and significantly improves the reliability and data credibility of the system.
Owner:SHENZHEN BEIDOU COMM TECH CO

MEMS sensor single-axis abrupt change correction method and system

The invention relates to the field of MEMS sensors, and discloses an MEMS sensor single-axis abrupt change correction method and system, and the method comprises the following steps: S1, obtaining a local gravitational acceleration reference value g of a target MEMS sensor deployment position; according to the method, the interference sudden change and the real motion can be accurately distinguished through a dual judgment mechanism of the die length deviation and the inter-axis correlation coefficient, the die length deviation is used for preliminarily screening abnormal data, the inter-axis correlation coefficient further verifies the authenticity of the sudden change, the problem of error correction caused by dependence on a single index in the prior art is effectively avoided, and the accuracy of the error correction is improved. And based on the physical law of three-axis acceleration vector and conservation under static measurement, the abrupt change axis is corrected by utilizing stable data of other two axes, and an inter-axis coupling correction factor is introduced to compensate the manufacturing process deviation, so that the corrected data is high in precision, and the total mold length deviation can be stably controlled within a preset threshold range. And the data accuracy of the MEMS sensor in an outdoor static measurement scene is obviously improved.
Owner:SHENZHEN BEIDOU COMM TECH CO

Multi-interface sensor for data acquisition

The utility model discloses a multi-interface sensor for data acquisition, which belongs to the field of data acquisition sensors and is characterized in that the upper end of a sensor packaging shell is provided with a mounting cavity, the side wall of the mounting cavity is provided with an arc-shaped through groove, a first arc-shaped shell and a second arc-shaped shell are mounted at the arc-shaped through groove, and the first arc-shaped shell and the second arc-shaped shell are connected through a butt joint part; and an interface sealing cover is mounted in an opening in the end surface of the first arc-shaped shell. And the arc-shaped shell is connected through a butt joint design and a bolt, so that the stability and the sealing of the structure are realized. This enhances the stability of the sensor, prevents external impurities from invading, and protects internal electronic components. The compatibility and the application range of the sensor are improved through the design of the multi-interface assembly, the sealing performance of the connecting part is enhanced through the sealing ring, and normal work in a severe environment is ensured. The design of the interface sealing cover protects the internal interface, the sealing performance and stability of the connection part are ensured through threaded connection and the sealing ring, the reliability of the sensor is improved, and the service life of the sensor is prolonged.
Owner:WUXI HONGXIN INTEGRATED CIRCUIT TECHNOLOGY CO LTD

TPMS receiver circuit with double controllers

The utility model relates to the field of tire pressure sensors, in particular to a TPMS (Tire Pressure Monitor System) receiver circuit with double controllers, which comprises a power supply module, a receiving module, an auxiliary controller module, a main controller module and a CAN (Controller Area Network) communication module, the power supply module is electrically connected with an external power supply, and the power output end of the power supply module is electrically connected with the power input ends of the receiving module, the auxiliary controller module, the main controller module and the CAN communication module; the signal input end of the receiving module is connected with an antenna ANT, and the signal output end of the receiving module is electrically connected with the signal input end of the auxiliary controller module; the signal output end of the auxiliary controller module is electrically connected with the main controller module, the communication end of the main controller module is electrically connected with the CAN communication module, the auxiliary controller only receives and stores data by means of division and cooperation of the two controllers, the main controller is only responsible for data reading and communication, mutual interference is avoided, and the CAN communication module is electrically connected with the CAN communication module. And the phenomena of RF data frame missing, data loss, CAN communication abnormity and the like are effectively prevented.
Owner:XIAMEN NANSHAN TECHNOLOGY CO LTD

Laser sensor capable of active detection

The utility model relates to a laser sensor capable of active detection, which is applied to the field of sensors and comprises an equipment body, a vertical rod is arranged in the equipment body, the upper end of the vertical rod is fixedly connected with a transverse bearing operation plate, and transverse sliding grooves are symmetrically formed in the left side and the right side of the upper end of the transverse bearing operation plate. The ends, away from each other, of the two transverse sliding grooves are fixedly connected with elastic reset pieces, the inner ends of the transverse sliding grooves are slidably connected with U-shaped adjustable abutting blocks, and telescopic self-rebounding storage vertical rods are arranged at the upper ends of the U-shaped adjustable abutting blocks. The upper ends of the two telescopic self-rebounding storage vertical rods are fixedly connected with a laser emitting sensor and a laser receiving sensor respectively, in the laser sensor capable of active detection, when different working conditions are met in the scheme, the adjustment range is further expanded through linkage adjustment in the vertical direction and the horizontal direction in the equipment body, and the adjustment precision is improved. A bidirectional adjustment mechanism enables the sensor to adapt to a complex and changeable space detection scene.
Owner:DALIAN RAINFOREST INFORMATION SYST CO LTD

Multi-directional force sensor

The invention relates to the field of sensors, and discloses a multidirectional force sensor which comprises a connecting assembly and a measuring assembly, the connecting assembly comprises a first connecting body and a second connecting body, the measuring assembly comprises a measuring sleeve, a measuring shaft mechanism and a strain gauge, and the measuring shaft mechanism comprises an elastic connecting rod, a first elastic piece and a second elastic piece. When the measured structure is subjected to linear force, the first elastic piece and the second elastic piece of the measuring shaft mechanism deform, the elastic connecting rod slides relative to the first connecting body and the second connecting body, meanwhile, the elastic connecting rod drives the measuring sleeve to slide, and deformation quantity is detected through the signal transmission element and an electric signal is output. The first adjusting piece and the second adjusting piece can be used for independently adjusting the measuring ranges of the drawing force and the compressing force, and the adaptability of the sensor is improved. When the measured structure is subjected to a rotating force, the rotating force can be detected through the deformation of the strain gauges connected with the first connector, and the temperature drift is corrected through the signal proportion of the two sets of strain gauges, so that the measurement precision is improved.
Owner:JIANGSU ARTUM INTELLIGENT TECHNOLOGY CO LTD

A low-power time-domain temperature sensor based on mosfet temperature sensing

The application relates to a time-domain temperature sensor based on MOSFET temperature sensing, and belongs to the temperature sensor field. The temperature sensor comprises a temperature sensing unit and a frequency digital converter connected in sequence. The frequency digital converter comprises a voltage-controlled oscillator and a counter. The temperature sensor senses the external temperature through the temperature sensing unit, converts a physical signal into an analog signal, converts the analog signal into a frequency signal through the voltage-controlled oscillator, inputs the frequency signal into the counter, and reads out a digital code value representing temperature information from the counter. Compared with a traditional temperature sensor, the temperature sensor has the advantages of low power consumption, small area, simple structure and the like.
Owner:CHONGQING UNIV OF POSTS & TELECOMM +1

Mechanism and data driven process index prediction method for sugarcane crushing process

The application discloses a kind of based on mechanism and data driven's sugarcane squeezing process process index prediction method, comprising the following steps: (1) multi-sensor field data acquisition and preprocessing, establish original data set;(2) establish sugarcane material elastic-plastic constitutive model;(3) establish sugarcane squeezing process porous medium control equation;(4) sugarcane squeezing process fluid-solid coupling model and its simulation, and establish new data set;(5) the establishment of physical guide neural network model;(6) the training details of physical guide neural network, obtain based on mechanism and data driven's sugarcane squeezing process process index prediction model.The method of the application is mainly used to predict the key process indexes such as sugarcane juice precipitation amount and sugarcane juice precipitation speed in the sugarcane squeezing production process.The cost of data acquisition in the production process is greatly reduced.High-dimensional system is characterized by small data set;The consistency of network can be greatly improved, and the generalization ability is enhanced.
Owner:GUANGXI UNIV

M-Z interference sensor of seven-core optical fiber cascade gradient refractive index multimode optical fiber

The utility model relates to the field of optical fiber interference sensors, and discloses an M-Z interference sensor of a seven-core optical fiber cascaded graded-index multimode optical fiber, which comprises a light injection single-mode optical fiber, a step multimode optical fiber, a seven-core optical fiber, a graded-index multimode optical fiber and a light receiving single-mode optical fiber which are connected in sequence, the axis of the joint of the seven-core optical fiber and the gradient refractive index multimode optical fiber deviates by a preset offset; the outer side of a fiber core of the seven-core optical fiber is coated with a stress layer, and the radius of the fiber core of the step multimode optical fiber is larger than the radius of the stress layer of a central fiber core of the seven-core optical fiber and smaller than the minimum distance from the central fiber core of the seven-core optical fiber to the stress layer of the fiber core on the outer side of the seven-core optical fiber. The length of the seven-core optical fiber is far smaller than that of the gradient multimode optical fiber; and the refractive index of the stress layer material outside the fiber core of the seven-core optical fiber is smaller than that of the cladding material of the seven-core optical fiber. According to the scheme, the problems that the interference valley is too wide and the extinction ratio is too low in a gradient refractive index multimode optical fiber interference sensor can be solved while the high-sensitivity sensing characteristic is maintained.
Owner:CHONGQING THREE GORGES UNIV

A flexible stress / strain sensor with high sensitivity and wide response range and a preparation method thereof

ActiveCN112697033BSound detectionHuman motion
The application discloses a kind of high sensitivity, wide response range flexible stress / strain sensor and preparation method thereof, belong to sensor field, obtain flexible stress / strain sensor with ultrahigh sensitivity, ultra-low detection limit, wide tensile range, fast response time and ultrahigh stability.The flexible stress / strain sensor of the application is sequentially from bottom to top stretchable polymer substrate with screen structure, metal film, metal nanoparticle carbon nanotube composite layer, metal film, polymer protective film;Sensor functional layer is metal film / metal nanoparticle carbon nanotube composite layer / metal film, obtain super-wide range (strain 0.02%~90%) and ultrahigh sensitivity (the highest GF value is 13590), fast response speed (~100ms) and excellent cycle stability (≥18000 times).And applied in human motion detection, human pulse monitoring and sound detection and other scenes, obtain good effect.
Owner:NANJING UNIV

Array current sensor rapid resolving method based on nested neural network

The invention belongs to the field of magnetic sensors, and provides a nested neural network-based array current sensor rapid resolving method, which comprises the following steps of: S1, acquiring magnetic field detection sample vectors of a magnetic sensor array under different working conditions, and taking a lead standard current value as label data of the sample vectors, constructing a data set of a first neural network; s2, dividing the data set in the S1; s3, constructing a first neural network model by using the data set divided in the S2; s4, in an actual measurement environment, inputting an output signal of the magnetic sensor array on the measured wire into the first-layer neural network model to obtain a current of the measured wire; forming a second neural network data set, and dividing the second neural network data set; s5, constructing a second neural network model by using the data set divided in the step S4; and S6, obtaining a predicted current value of the current to be measured by using the second neural network model. According to the invention, high-precision rapid calculation of the current in a complex interference environment can be realized.
Owner:NAT UNIV OF DEFENSE TECH

A dynamic analysis method of a MEMS sensor for outdoor cold-state measurement

The application relates to the field of MEMS sensors and discloses a dynamic analysis method for a MEMS sensor for outdoor cold-state measurement, which comprises the following steps: S1, collecting inclination or motion data of multiple MEMS sensors installed on the same building; in the application, the drift influence of each uncorrected sensor is identified and removed through multi-sensor linkage analysis, the precision of building inclination measurement in an outdoor cold-state environment is significantly improved, the pole singularity problem is effectively avoided through state expression by using quaternions or Lie groups SO (3), and the slight inclination change in a three-dimensional space can be accurately described; meanwhile, measurement factors, linkage common-mode factors and physical information constraint factors are introduced under a factor graph framework, abnormal equipment data is removed in combination with a robust kernel function, the angular velocity change rate is constrained by introducing a structural stiffness model of the building, MEMS high-frequency white noise is filtered out, the robustness of the analysis method is significantly enhanced, and the analysis method can adapt to a complex and changeable outdoor cold-state environment.
Owner:SHENZHEN BEIDOU COMM TECH CO

Automatic driving point cloud attack method, system, medium and equipment based on data degradation feature constraint

PendingCN122454526APoint cloudSimulation
The application relates to the field of automatic driving point cloud attack, and discloses an automatic driving point cloud attack method, system, medium and equipment based on data degradation feature constraint, which comprises the following steps: constructing a vehicle point cloud sample library to be injected based on vehicle point cloud data under ideal acquisition conditions; screening a candidate region, combining a sensor field of view and ground constraints to determine an initial injection pose of the vehicle point cloud sample to be injected; extracting a degradation scene style feature of a target scene point cloud and mapping the degradation scene style feature into a degradation control parameter used for controlling a point cloud degradation mode; performing degradation processing on the injected vehicle point cloud according to the degradation control parameter to generate an adversarial point cloud sample consistent with the target scene degradation style; constructing an optimization objective function containing attack effectiveness, style consistency and point number budget constraints; and through a two-stage iterative optimization process, adjusting the selection of injection points, space pose parameters and the degradation control parameter, and feeding back optimization updates until an adversarial sample meeting the constraint conditions is generated.
Owner:BEIJING INFORMATION SCI & TECH UNIV

Wireless transmission wind powder detection device with self-cleaning function

The invention provides a wireless transmission wind powder detection device with a self-cleaning function, and relates to the field of sensors. The wireless transmission wind powder detection device with the self-cleaning function comprises a pipeline part connected with a detection pipeline, a baffle capable of being rotationally sealed is arranged in the pipeline part, an annular wind powder sensor used for detecting static electricity is arranged in the pipeline part in the ventilation direction, and an elastically-hinged extension frame is arranged in the pipeline part; one end of the extension frame is located on the inner ring of the annular wind powder sensor, and a cleaning brush used for cleaning the annular wind powder sensor is fixedly installed at the end, located on the inner ring of the annular wind powder sensor, of the extension frame. According to the wireless transmission wind powder detection device with the self-cleaning function, when the device is used, a cleaning brush makes contact with an annular wind powder sensor by rotating an extension frame, the cleaning brush is driven to rotate through a rotating mechanism, and the cleaning brush rubs against dust on the surface of the annular wind powder sensor; therefore, the annular wind powder sensor can be cleaned.
Owner:JIANGSU LINGZE TECH CO LTD

Inter-satellite phase design method and system based on sensor field of view matching

PendingCN122287040AEngineeringTesting Methods
This invention belongs to the field of low-Earth orbit remote sensing satellite technology and provides a method and system for inter-satellite phase design based on sensor field-of-view matching. The method includes: observation and positioning to obtain the characterization of inter-satellite phase design input variables; calculating the upper and lower limits of the inter-satellite phase difference based on the characterization of the inter-satellite phase design input variables; determining the range of inter-satellite phase difference values; and outputting the phase difference. This invention solves the problem of field-of-view matching during satellite relay, improving the accuracy of relays. It further considers satellite sensor field-of-view matching when satellites have a cooperative relationship, making the problem more targeted to specific scenarios. It is applicable to applications such as Earth remote sensing observation and space debris observation, and is suitable for various sensors, including optical and microwave sensors. It can provide direct guidance for the design of various specific constellation schemes with inter-satellite relay cooperation.
Owner:SHANGHAI SATELLITE ENG INST

A fluorinated TiO2 gas sensor based on ultraviolet light band and a preparation method thereof

The application belongs to the technical field of electronic components and elements, and provides a fluorinated TiO2 gas sensor based on ultraviolet light bands and a preparation method thereof.The fluorinated TiO2 gas sensor comprises a gas-sensitive material and an interdigital electrode plate, the gas-sensitive material is coated on the surface of the interdigital electrode plate, and the gas-sensitive material is composed of fluorinated titanium dioxide hollow microsphere material.The method has simple production process, and the obtained gas-sensitive material has high sensitivity to formaldehyde and fast response and recovery, and can be used in the field of formaldehyde gas sensors.Compared with existing traditional heating type gas sensor array technology, the application can make the sensor work at room temperature, reduce the aging problem of the sensitive material, improve the stability of the sensor, and thus obtain a novel gas-sensitive material with high sensitivity.
Owner:DALIAN UNIV OF TECH

System and methods for mitigating sensor interference using on-sensor field-of-view analytics

Systems and methods are disclosed herein for mitigation of sensor obstructions or interference. The system can generate a first sensor map using a first sensor and a second sensor map using a second sensor. The system can detect a first representation of a first object in the first sensor map. The system can obtain first field-of-view information associated with the first sensor and second field-of-view information associated with the second sensor. The system can generate a prediction for an object position of the first object. The system can determine, in the second sensor map, a predicted sensor cell for the first object. The system can determine that the second sensor map does not include a second representation of the object. The system can generate a sensor operation status for the second sensor. The system can execute an interference diagnostic program according to the sensor operation status.
Owner:CATERPILLAR INC

Multi-parameter sensitive element for extremely low temperature, multi-parameter sensor and design method thereof

PendingCN122345420AGratingMulti parameter
This invention relates to the field of sensors, specifically to a multi-parameter sensing element, a multi-parameter sensor, and its design method for cryogenic applications. The scheme involves setting a reference channel and a sensing channel on a piezoelectric substrate. Each channel includes a SAW resonant unit composed of an interdigital transducer and a reflective grating, the SAW resonant unit being made of superconducting material. A functional sensitive layer is also positioned along the acoustic field propagation path of the SAW resonant unit in the sensing channel, making it sensitive to both temperature and non-temperature environmental parameters associated with the functional sensitive layer. The reference channel contains only the SAW resonant unit and is only sensitive to temperature. The sensor application of this invention allows for precise temperature measurement using the reference channel, and the result can be used to assist the sensing channel in resolving the values ​​of non-temperature environmental parameters. By integrating multiple channels with orthogonal sensing characteristics on the same piezoelectric substrate, this invention achieves independent decoupling of different parameters, enabling disturbance-free, high-sensitivity in-situ monitoring.
Owner:ANHUI UNIV