140 results about "Dual sensor" patented technology

The invention provides an automatic processing method for real-time observation data of an ocean station, and belongs to the technical field of ocean observation data processing. A wavelet packet decomposition multi-scale noise separation algorithm is established to distinguish environmental noise and real signals, dual-sensor redundancy configuration is combined with Bayesian inference to identify sensor drift, and a calibration coefficient is updated in real time through a recursive least square method. A one-dimensional time sequence is mapped to a high-dimensional phase space by utilizing a phase space reconstruction algorithm to realize high-precision prediction of a chaotic signal, a hierarchical data storage architecture is established, and a data migration strategy is iteratively optimized through a hierarchical correlation degree function; the technical problem that time synchronization signals are difficult to reconstruct accurately according to asynchronous sampling data of multiple sensors of an ocean station is solved.

Disclosed in the present application is a catheter pump system. A measured intraventricular pressure and a measured intravascular pressure are measured by means of dual sensors, respectively, and an estimated intraventricular pressure is calculated by using the measured intravascular pressure, a motor current, and a motor rotation speed. When it is determined that a suction event occurs in a pump assembly by using at least one of the estimated intraventricular pressure, the measured intravascular pressure, and the motor current, the root cause of the suction event is further determined by using the positive or negative characteristics of the measured intraventricular pressure.

The invention discloses an infusion monitoring and automatic blocking device and method. The device comprises a blocking mechanism, a monitoring module and a control module. The blocking mechanism controls the first abutting piece and the second abutting piece to be close to each other through the driving piece so as to clamp the infusion tube. The monitoring module adopts a double-sensor scheme of an upper sensor and a lower sensor and is used for monitoring liquid drop pulse and liquid level height. And the control module operates a weighted average data fusion algorithm based on confidence, and calculates the actual dripping speed after fusion. According to the device, the accuracy and reliability of infusion state monitoring are improved through a dynamic calibration algorithm and data fusion. The control module can accurately identify three main risk states, namely dripping speed and flow abnormity, infusion completion and pipeline gas abnormity. When it is judged that the infusion tube flow channel is abnormal, the control module drives the blocking mechanism to rapidly block the infusion tube flow channel, a double confirmation mechanism is arranged to provide safety redundancy, a safety closed loop of'detection-decision-execution 'is formed, and the safety and management efficiency of clinical infusion are improved.

The invention discloses a pet non-inductive health monitoring and stress early warning intelligent nest mat and a control method, and belongs to the technical field of pet intelligent articles and intelligent control. Pet physiological parameters are synchronously collected through the piezoelectric pressure sensor and the infrared temperature sensor, the stress level is quantitatively judged based on an AI algorithm model, graded early warning and matching type relieving intervention are triggered according to the stress level, and meanwhile a low-power-consumption control mechanism is carried to achieve long endurance. The intelligent nest mat is of a three-layer detachable waterproof structure and supports a double-sensor high-precision scheme and a single-sensor low-cost scheme at the same time, and all the modules work cooperatively to achieve a whole-process closed loop of monitoring, early warning and relieving. The system solves the problems of wearing resistance, low monitoring precision, untimely early warning, inactive relieving and the like of pets, is suitable for family health monitoring of common pets such as dogs, cats and the like, and has the advantages of non-inductive monitoring, accurate identification, intelligent intervention, low power consumption, flexible scheme and the like.

The invention discloses an aircraft control method based on barometric altitude compensation and attitude calculation of dual-sensor fusion, and the method comprises the steps: carrying out the temperature compensation and attitude calculation through collecting the data of a barometric sensor and an inertial measurement unit, and obtaining an original altitude and an Euler angle; processing the original height based on an alpha-beta filter to obtain an air pressure estimation height, and calculating an inertial navigation height and a vertical speed through attitude conversion integral; a self-adaptive complementary filtering strategy is adopted, the fusion weight is dynamically adjusted according to the air pressure estimation height variance, the high-frequency inertial data and the low-frequency air pressure data are fused, and accurate fusion height and vertical speed are output; finally, constructing a cascade controller, and calculating a target vertical speed instruction by an outer ring according to the expected height deviation; the inner ring generates an actuator signal based on the deviation to drive a motor; height stable control is achieved, so that drifting is effectively restrained, the precision and the response speed are improved, and reliable height control of the aircraft under vibration or air pressure changes is achieved.

The application provides a kind of calibration-free liquid level detection device, method and washing machine, comprising: first TMR sensor is arranged above the liquid surface to be measured, second TMR sensor is arranged below the liquid surface to be measured, magnetic float floats on the liquid surface to be measured;The magnetic field intensity detected by the first TMR sensor is collected simultaneously, and the magnetic field intensity detected by the second TMR sensor is collected simultaneously;The ratio of the two magnetic field intensities is calculated;Then the liquid level height of the liquid surface to be measured is calculated according to the ratio of the two magnetic field intensities.The liquid level height of the liquid surface to be measured can be calculated by the ratio of the magnetic field intensity detected by the double TMR sensor, the ratio of the magnetic field intensity can offset the magnetic field attenuation of permanent magnet, common mode electromagnetic interference, sensor individual difference, without factory calibration and regular calibration, can greatly improve production efficiency, reduce maintenance cost;Without complex mechanical structure, installation is convenient;No mechanical contact wear, overall reliability is high, life is significantly better than traditional detection scheme.

This utility model discloses a trolley positioning mechanism, comprising: a frame; a guide mechanism, one end of which is connected to the frame and guides the trolley towards the frame; a positioning mechanism, which is respectively mounted on the trolley and the frame and positions the trolley; and a fixing mechanism, which is mounted on the frame and fixes the trolley. This utility model guides the trolley to automatically align itself using ramps and guide bars, and utilizes V-shaped positioning blocks for precise positioning, ensuring consistent placement each time. After dual sensors detect the trolley's arrival, cylinders on both sides simultaneously clamp it to prevent displacement or shaking; the entire mechanism is firmly fixed to the ground and is not easily loosened even with frequent use; the structure is simple and durable, and maintenance is convenient, making it particularly suitable for automated production lines requiring rapid and precise placement of objects.

The invention discloses a two-wheeled vehicle energy recovery system and method. The system comprises an environment sensing module (a GPS, an air pressure sensor, a gyroscope, a terrain processor and a Kalman filtering prediction gradient), a signal acquisition module (a brake force sensor, a wheel speed sensor, a load sensor, a temperature sensor and a double-SOC sensor), and a super capacitor module (an energy storage area is made of a high-energy density material; the energy discharge region is made of a high-power-density material; the execution output module comprises a hub motor, a rectifier, a double-LLC converter, a relay, a clutch, a PTC and a liquid cooling system. The method comprises the steps that 1, dynamic energy recovery is conducted, specifically, the total required braking force is calculated during braking, regeneration or friction braking is selected according to the SOC of an energy storage area, and the regenerative braking force is limited by motor characteristics and capacitor voltage; 2, intelligent energy transfer: an energy storage area SOCgt; and when the temperature is 80%, the transfer amount is calculated according to the state, and is transferred within the temperature control range of-20 DEG C to 65 DEG C through SOC correction in an energy discharge region. According to the invention, the recovery efficiency and the service life of the system are optimized through capacitor partitioning and multi-mode control.

According to the double-parameter linkage cooling system and method for the heat recovery refrigerating unit, the output frequency of the frequency conversion execution module is dynamically adjusted through double-parameter linkage control of the condensation pressure and the heat recovery water supply temperature, and then the rotating speed or the start-stop state of the cooling water pump is controlled; flow regulation of a traditional cooling water side bypass circulating pipe is replaced, cooling requirements under different loads are met, a cooling water pump is started, stopped and regulated in speed according to requirements, the function of improving the operation efficiency of a cooling system is achieved, system energy consumption is reduced, and the service life of equipment is prolonged. A traditional cooling water side bypass circulating pipe is omitted, the system structure is simplified, the modification cost is low, the period is short, and upgrading and modification of various existing heat recovery refrigerating units are adapted; according to the method, working condition unbalance caused by single-parameter control is avoided through two-parameter cooperative regulation and control, meanwhile, multiple protection mechanisms such as double-sensor backup, minimum rotating speed limitation and an anti-lock program are set, and safe operation of a unit is ensured.

This invention discloses a fuel tank anti-theft detection method and system based on differential and multi-feature fusion recognition. The method includes: executing a fuel tank anti-theft detection algorithm within a time recognition window to determine abnormal fuel tank opening behavior; if multiple consecutive time recognition windows determine abnormal fuel tank opening, an alarm message is generated and sent out. The advantages of this invention are as follows: 1. The dual-sensor differential structure can distinguish between overall vibration and local structural displacement; 2. Data collected by dual sensors can effectively distinguish between overall vehicle vibration and local abnormal fuel tank cap opening behavior; wherein, direction-sensitive differential can enhance the recognition ability of the opening direction movement, and multi-feature fusion recognition can significantly reduce the false alarm rate and improve recognition accuracy; 3. It provides self-learning suppression alarm, which can improve environmental adaptability; 4. It achieves long-term low-power operation through hierarchical power consumption management, suitable for scenarios without external power supply.

The utility model discloses a photoresist emptying detection device and a machine table. The photoresist emptying detection device comprises a first gas detection sensor arranged on a photoresist container and a second gas detection sensor arranged on a photoresist pipeline, the device further comprises an analysis control system, and the analysis control system is connected with the first gas detection sensor and the second gas detection sensor and judges whether the photoresist is emptied or not according to detection results of the first gas detection sensor and the second gas detection sensor. Through the photoresist emptying detection method in which the two sensors are matched with each other, the actual consumption condition of the photoresist is accurately identified, the problem of bubbles in a pipeline is timely eliminated, and meanwhile, the photoresist allowance can be further confirmed according to signals of the sensors on the photoresist container. Manual confirmation is not needed, and production efficiency is improved.

The invention relates to the technical field of wind power, in particular to an anti-overtemperature monitoring system and method for a high-speed shaft brake of a doubly-fed wind turbine generator, and the system comprises an infrared sensor, a PT100 temperature sensor, a two-channel temperature controller, a PLC, an SCADA monitoring system, an infrared sensor support, a miniature circuit breaker and the like. The system monitors the temperature of a brake disc in a non-contact mode and monitors the temperature of a brake pad in a contact mode through double sensors, the temperature is converted into a standard analog quantity signal through a temperature controller, a series detection loop and differentiation threshold judgment are combined, and a PLC outputs an instruction; the method comprises the steps of two-way temperature measurement, signal processing, logic control and remote monitoring, and is adaptive to the potential hazard of heat generation by friction of aging of a brake of an old unit. According to the invention, a double-point redundancy monitoring system is constructed, the defects of single temperature measurement and lack of verification in the prior art are overcome, the reliability and accuracy of overtemperature identification are improved, false triggering is avoided, the operation and maintenance convenience is optimized, and the operation safety of the wind turbine generator is comprehensively guaranteed.

The utility model discloses a pressure detection device for an isobutane / n-butane raw material storage tank. The pressure detection device comprises a pressure detection unit, a signal processing module, a central control module, a display module, an alarm module and a protection module. The pressure detection unit adopts a main / standby piezoresistive pressure sensor and is installed at the top of the storage tank through a sealing joint, and an independent shielding signal line is sleeved with a metal corrugated pipe to prevent electromagnetic interference and mechanical damage. The signal processing module integrates signal amplification, filtering and analog-to-digital conversion functions and transmits processed data to the central control module. A microcontroller is arranged in the central control module, a pressure threshold value is preset, the main sensor and the standby sensor can be automatically switched, and encrypted data can be stored. The display module displays a pressure value and a curve in real time, and the alarm module realizes multi-level early warning through sound-light alarm and short message notification. Through double-sensor redundancy design, signal anti-interference processing, intelligent fault switching and multiple alarm mechanisms, the precision, stability and safety of pressure detection are remarkably improved.

The dual differential pressure transducer assembly includes a flow path element that defines a fluid channel from an intravenous (IV) fluid inlet to an IV fluid outlet and defines a centerline axis of the assembly. A first sensor cavity and a second sensor cavity are disposed in parallel alongside the fluid channel and are separately connected to the fluid channel via first and second notches through the flow path element across the centerline axis. A first differential pressure sensor and a second differential pressure sensor abut their respective cavities and are exposed to the fluid channel through the notches. Separate signal conductors are electrically connected to the first differential pressure sensor and the second differential pressure sensor and are housed within a common connector cable.

The present invention proposes a safety switch element (1) having a tactile sensor in the form of a switch strip (2) or a switch mat, and having an electrical contact element (7), wherein at least one contact element (7) is connected as an electrode (E) of a capacitive proximity sensor in such a way that capacitive coupling (C(d)) to an surrounding object, in particular capacitive coupling that depends on the distance between such object and the capacitive proximity sensor is measured, and the present invention proposes that the electrical contact elements (7) of the tactile sensor are normally connected as a closed circuit and connected in a way that they conduct electricity to one another, and that a single contact element or a series of contact elements (7) connected in a way that conduct electricity to one another form the electrode (E) of the proximity sensor.

The invention relates to the technical field of vehicle-mounted camera screw locking, in particular to a double-height-detection screw locking mechanism which comprises a carrying frame, one side of the carrying frame is connected with a Z-axis assembly, an electric screwdriver is installed on the surface of the Z-axis assembly, and a screwdriver head is detachably installed at the bottom of the electric screwdriver; a sleeve assembly is arranged on the surface of the carrying frame and located below the electric screwdriver, and a fastening screw is placed at the bottom of the sleeve assembly. A double-height detection assembly is arranged on one side of the carrying frame; a distance adjusting assembly is further arranged on the surface of the carrying frame. A visual positioning assembly is arranged on the surface of the Z-axis assembly. According to the vehicle-mounted camera locking device, the automation degree of the vehicle-mounted camera during screw locking is improved, the problem that manual locking is needed in the prior art is solved, the working efficiency is improved, the locking quality of the vehicle-mounted camera is guaranteed, and the yield is higher; according to the invention, the double sensors are used for detecting the locking height of the screw, the controllable function of the locking precision of the screw is realized, and the automatic control function of the locking torsion can also be realized at the same time.

A system for assisting a user in providing chest compressions to a patient includes: a first motion sensor configured for measuring motion of a first region of a thorax of the patient; and a first housing physically coupled with the first motion sensor. The first housing includes: a first frame for holding the first motion sensor in place, and a textured padding for receiving at least a portion of at least one hand of the user during chest compressions. The textured padding covers the first frame and the first motion sensor. The textured padding comprises an exterior having a plurality of raised surface features. The system also includes: a second motion sensor configured for measuring motion of a second region of the thorax of the patient; and a second housing physically coupled with the second motion sensor and having a second frame for holding the first motion sensor in place.

The invention belongs to the technical field of loading machine brake safety, and discloses a loading machine brake pilot safety starting system, which adopts a framework that a dual-redundancy pilot pressure sensor is matched with hydraulic signal filtering and validity verification, and realizes dual acquisition and accurate verification of brake signals; the double sensors synchronously collect signals and complete noise reduction processing, the effectiveness of the signals is confirmed through contrastive analysis, and a pressure threshold value can be adaptively calibrated through an ECU to meet different braking requirements; once the signal is abnormal, the system is automatically switched to a standby sensor, and fault information is fed back at the same time; the problem of interlocking misjudgment caused by a single sensor fault is solved; working condition parameters are collected through inclination angle, gear and load multi-dimensional sensors, a three-level risk assessment system is built, and a dynamic adjustment mechanism is matched, so that safety is guaranteed, and operation flexibility is taken into consideration; in high-risk scenes such as ramps, heavy loads and gears, the system can be automatically prohibited from being started, and the braking force is enhanced.

A dual differential contactless current sensor uses a pair of magnetic sensors placed adjacent to a conductor, such as a metallic trace on a printed circuit board, which is conducting electrical current. The ability to detect and measure a tampering magnetic field in such a sensor is provided by a circuit that sums the outputs of the pair of magnetic sensors. The circuit can output an alarm signal, such as a programmable one-bit alarm that indicates when the external magnetic field exceeds a programmed threshold, or an analog voltage proportional to the external field. The alarm signal can be polled by additional circuitry that indicates to the stakeholders that a party is attempting to alter the power measurement.

The present invention relates to a switchboard temperature monitoring system and, more particularly, to a switchboard temperature monitoring system comprising: at least one contact type sensor module arranged such that a redundant sensor device, arranged inside the switchboard so as to measure the temperature of a target, is attached to the target; and at least one non-contact type sensor module that is adjacent to the target and is spaced apart therefrom, and thus accurate, stable, uninterrupted, and continuous monitoring can be performed about whether there is an abnormal state inside the switchboard.

The application relates to the technical field of paper cup production, in particular to a paper cup generation quantity data tracing system, which comprises a sensing and collecting module used for synchronously acquiring a speed parameter of a conveying belt and an independent shielding time length signal; a feature fusion module used for processing the independent shielding time length signal to generate a time length fusion feature and generating a length fusion feature based on the speed parameter and the time length fusion feature; and a cooperative judgment module configured to execute double-feature cooperative judgment logic, that is, comparing the time length fusion feature with a preset cup connection time length judgment threshold value, simultaneously comparing the length fusion feature with a preset cup connection length judgment threshold value, and outputting a cup connection judgment instruction to trigger counting of two paper cups only when the comparison results of the two satisfy respective cup connection judgment conditions. Through double-sensor cooperative measurement and real-time speed calibration, the application can realize accurate recognition and counting of cup connection, so as to solve the problem of missed counting caused by misjudgment in high-speed production.

The invention discloses a mining roadway grouting anchor cable forepoling method, which belongs to the field of grouting anchor cable construction methods, and comprises the following steps of: generating a three-dimensional surrounding rock map through double-sensor complementary detection and data fusion, and combining numerical simulation to realize dynamic adaptive delta-shaped arrangement of grouting holes and anchor cable holes, accurately covering weak areas and adapting to deep complex working conditions. The integrated anchor cable integrates grouting, sensing and tensioning functions and is matched with a degradable anti-corrosion sleeve and a pressure self-adaptive sealing plug, the construction efficiency and durability are improved, meanwhile, three-stage gradient grouting, stress feedback regulation and control and stepped tensioning locking are combined with graded response monitoring and encryption reinforcement, the surrounding rock deformation risk can be rapidly dealt with, and the construction quality is improved. And the maximum radial deformation is controlled, and safety accidents such as collapse and wall caving are reduced.

The invention discloses a pipeline multi-leakage-point detection method based on multi-modal fusion and a Mama framework. The method comprises the steps of 1, determining a feature fusion object, 2, carrying out double-sensor acoustic feature fusion, 3, carrying out cross attention multi-modal fusion, and 4, carrying out Mama-SSM model processing. According to the method, engineering drawing feature input is introduced, that is, auxiliary support is provided for audio feature analysis from spatial distribution, multi-modal information is fused, and the target positioning capability of the model in a complex scene is enhanced. Meanwhile, the method is combined with a mamba model, the fused multi-modal features are analyzed, the accuracy of target detection and positioning is greatly improved, and great help can be provided for water conservancy system leakage point troubleshooting in a complex environment.

The embodiment of the invention discloses a water quality detection buoy with alternate sensors and an image self-detection method of the water quality detection buoy, and relates to the technical field of marine environment monitoring. The device further comprises a floating body support, a sensor rotation module, an image self-checking module, an intelligent control module, a cleaning module, a photovoltaic power supply module and a communication module. Each lifting mechanism of the sensor rotation module can drive one water quality sensor to independently lift; the image recognition unit and the control unit can receive the collected surface image of the water quality sensor and detect surface attachments, and the high-pressure spray head is used for cleaning. According to the invention, the double sensors are alternated, and the two water quality sensors alternately enter water to work, so that the monitoring blind area of the single-sensor lifting buoy during maintenance is eliminated, the continuity and integrity of water quality monitoring data are ensured, and the fouling type and degree can be judged and cleaning can be decided through multi-dimensional characteristics.

The invention discloses a crane rotating speed monitoring system and a crane, the crane rotating speed monitoring system comprises a permanent magnet ratchet ring and a double-sensor assembly, the double-sensor assembly is installed on a winding drum and comprises a first magneto-dependent sensor and a second magneto-dependent sensor, and when the winding drum rotates, the first magneto-dependent sensor and the second magneto-dependent sensor are connected; the first magneto-dependent sensor and the second magneto-dependent sensor respectively output a first square wave signal and a second square wave signal with constant phase difference, so that the rotation direction of the winding drum is represented through the phase relationship between the first square wave signal and the second square wave signal; and the direction distinguishing module is used for generating a direction signal and a counting pulse signal based on pure digital logic circuit processing. Therefore, the crane rotating speed monitoring system realizes real-time judgment of forward and reverse rotation and quadruplicated frequency counting through orthogonal signal output of the permanent magnet ratchet ring and the double magneto-dependent sensors in combination with a pure hardware direction judgment module, and the position monitoring resolution is improved.

The invention relates to the technical field of vehicle monitoring, and discloses an automobile immersion monitoring system and method, and the method comprises the steps: building a multi-source sensor time sequence collection frame based on a dual-sensor combination detection device and a heavy hammer switch device, and obtaining an original sensor signal sequence with a timestamp; performing targeted filtering processing on the original signal to obtain a filtered sensor signal sequence; performing space-time and trend analysis on the filtered signal to obtain a left side signal feature vector, a right side signal feature vector, a cross-side consistency index and a signal change rate trend feature; constructing a hierarchical state transition model based on the features; scene state transition, differential self-rescue action execution and hysteresis control are implemented based on the model; a dynamic wading decision confusion trap is effectively cracked, and accurate, robust and delay-free identification and decision of the wading state are realized.

A distributed forwarding sensing system and method for multi-event localization and high-fidelity acoustic waveform reconstruction in which the method includes modeling a bi-directional distributed forwarding sensing scheme as an equivalent dual-element sensor array (SA2), where an event location (z) along a fiber is mapped to a direction-of-arrival (DOA) angle (α). Signals from first and second receivers are transformed into the time-frequency domain. Generalized Cross-Correlation with Phase Transform (GCC-PHAT) is used to accurately localize multiple simultaneous events by estimating a time shift (Δτ). An adaptive beamforming technique, such as a Generalized Sidelobe Canceller (GSC), is then steered toward the desired event location to enhance the acoustic signal and mitigate noise and interference from other locations along the fiber, resulting in a high-fidelity reconstructed acoustic waveform suitable for machine learning classification.

This utility model discloses an intelligent support device for protective lead aprons in radiology departments, including a support column, a hanging beam mounted on the top of the support column, a gravity sensor mounted on one side of the bottom of the hanging beam, the gravity sensor connected to a lead apron hanger, a human body detection component mounted on the lower side of the support column, and a main control-voice broadcaster mounted on the upper side of the support column. The human body detection component includes three sets of sensors and a ring bracket, which is fixedly mounted on the support column. The three sets of sensors are arranged in a 120° ring on the ring bracket. The main control-voice broadcaster is connected to the gravity sensor and the human body detection component via a wireless communication module. This utility model achieves comprehensive monitoring of personnel activity through the ring layout of the three sets of sensors, and employs a gravity-human body dual-sensor interlocking mechanism to accurately determine the lead apron wearing status. The main control-voice broadcaster can effectively prevent unprotected personnel from accidentally entering the radiation area.

This invention discloses a pulping and processing control method based on the production process of candied white fungus and lotus root cake, belonging to the field of food processing control technology. The method includes the following steps: after starting the pulping equipment, real-time data is collected through dual sensors, including real-time acquisition of the actual rotation speed of the pulping equipment via a speed sensor and real-time detection of the actual particle diameter of the pulp via a laser particle size sensor, where t is the pulping running time. This invention provides a scientific and intelligent control scheme for the pulping process of candied white fungus and lotus root cake by constructing a closed-loop precision control system that integrates multi-sensor data acquisition and PID control algorithms. It achieves dynamic perception and precise control of the pulp's fineness, effectively avoiding the problem of coarse or over-pulverized pulp caused by fluctuations in raw material characteristics under traditional fixed-parameter pulping modes, ensuring the consistency and stability of the taste of different batches of finished products.