116 results about "Mass sensor" patented technology

The invention discloses a mixed emulsion explosive one-key production control method and system, and relates to the field of automatic and intelligent control. By means of automatic and intelligent control means, the problems of low efficiency, high cost, quality fluctuation, process uncertainty and the like in traditional mixed emulsion explosive production are solved, accurate feeding of raw materials is achieved through a quality sensor array and a PID control algorithm, and the production efficiency is improved. The stability of production parameters is ensured through multi-sensor data fusion and an advanced control algorithm, so that the consistency of product quality is improved; meanwhile, a feedback control loop and a continuous learning mechanism are established, closed-loop control in the production process is achieved, technological parameters are optimized, the production stability and reliability are ensured, the production efficiency and the product quality are remarkably improved, and the labor cost is reduced.

Systems, methods, and computer-readable media for calibrating air quality sensors are provided. A sensor node includes a sensor node printed circuit board, a sensor module, and a communication module. The sensor node printed circuit board manages power of the sensor node circuitry, the sensor module, and the communication module such that power is provided from a primary power supply supplemented by a secondary power supply. The sensor module includes a plurality of air quality sensors to measure the concentration of air pollutants. The sensor module may be replaceable. The communication module may communicate air quality measurements to and receive configurations from a data management platform, which may perform processes to improve the accuracy of the air quality measurements.

The invention discloses an AC / DC power distribution network power quality control method and device, and the method comprises the steps: collecting power quality data in an AC / DC power distribution network, carrying out the feature analysis of the power quality data, and obtaining a current feature parameter and a voltage abnormality identifier; carrying out differential compression processing on the power quality data based on the current characteristic parameters and the voltage abnormity identification; transmitting the compressed data and feature information through a redundant channel comprising a main communication link and a standby communication link; and generating electric energy quality alarm information according to the transmitted data, and performing power grid operation decision control according to the information. According to the method, the electric energy quality data of the plurality of Internet of Things electric energy quality sensors in the AC / DC power distribution network are collected, and harmonic analysis is performed on the current waveform of the electric energy quality data, so that the accuracy and robustness of feature extraction are ensured; therefore, the requirements of the modern AC / DC hybrid power distribution network for high-precision, high-reliability and quick-response power quality control can be met.

The invention relates to the technical field of air quality monitoring, and provides an air quality sensor based on the Internet of Things and a remote control method thereof, and the air quality sensor comprises a multi-source heterogeneous sensing fusion system, a time-space domain edge gateway system and a dynamic response collaborative central system. The remote control method comprises the steps that a purification device linkage control matrix is processed through a heterogeneous instruction fusion technology to obtain a space optimization control vector set, and the space optimization control vector set forms a man-machine interaction entropy value mechanism; the man-machine interaction entropy value model is processed through an entropy weight dynamic distribution strategy to obtain a space state sensing vector, and the space state sensing vector forms a cross-medium alarm triggering channel; the cross-medium alarm trigger channel is processed by the bidirectional response coupling engine to obtain an equipment state feature topology, and the equipment state feature topology forms a closed-loop control entropy correction instruction. According to the invention, pollution of a physical space is dynamically converted into operable equipment control parameters, and a complete Internet of Things closed-loop system from environment monitoring to purification execution is established.

The invention discloses an electric energy quality deduction prediction system based on artificial intelligence. An electric energy quality sensor collects voltage, current harmonic waves and transient disturbance data of multiple feeder nodes of a power grid; after the in-situ calculation unit compresses the collected data, the data access module processes the compressed data to obtain multi-monitoring-point continuous sequence data; the power quality deduction prediction sub-module trains a spatial-temporal feature extraction model through deep learning, processes the obtained data based on the trained model, and generates an advanced early warning signal; the multi-interference-source combined research and judgment sub-module processes power grid topology based on a graph attention network layer, and realizes accurate quantification of multi-interference-source harmonic responsibility by combining with global interactive calculation of a traceability attention layer; and the active decision-making module generates treatment strategy suggestions according to the early warning and quantification results and visually outputs the treatment strategy suggestions. According to the invention, the problem of high false alarm rate of fixed threshold alarm in a low signal-to-noise ratio scene is effectively solved.

A beverage dispensing system is configured to facilitate communication between a point of sale terminal and a beverage dispenser for receiving and fulfilling beverage orders. The dispensing system includes a conversion server that maps beverage orders between point of sale entry data and beverage dispenser recipe data. An automatic portion control (APC) assembly includes a mass sensor configured to determine a mass of a cup resting thereon. Using the mass of the cup, the dispenser makes a cup size prediction and performs a portion control dispensing operation. Based on the cup size prediction, a user interface is modified to allow for faster interaction. The APC assembly is positioned beneath a nozzle of the beverage dispenser and includes a removable platform assembly magnetically coupled to a mass sensor assembly. The mass sensor assembly includes a load cell or other mass sensor.

The invention relates to the technical field of test devices, in particular to a modularized sand-liquid mixing and accurate adding system for a sand-containing cavitation test of a water turbine, which comprises a sand-water mixing tank connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with a main pipeline, and a metering pump is arranged on the water outlet pipe; a first sand content monitoring sensor, a liquid level sensor and a stirring structure are arranged in the sand-water mixing tank; a material storage ball is arranged on the support, sand grains are arranged in the material storage ball, and a mass sensor is arranged on the support; and the conveying structure is connected with the storage ball and the sand-water mixing tank. The functions of sand liquid preparation, accurate metering, intelligent control, mixed injection and the like are highly integrated in an independent module to form a complete system which can operate independently. By means of the modular design, the system is compact in structure, small in occupied area and convenient to install, debug and maintain. And the high-precision sand content control ensures the accuracy and repeatability of test conditions, so that the test data is more reliable, and powerful support is provided for scientific research.

The present application relates to the technical fields of gypsum board moisture deflection measurement, and specifically relates to a gypsum board moisture deflection tester, which comprises a constant temperature and humidity chamber, a plurality of moisture inlet pipes are distributed on both sides of the constant temperature and humidity chamber, a temperature and humidity sensor is installed on the inner top surface, and a moving assembly is installed on the top of the inner cavity. A mounting bracket is installed on the top of the moving assembly, and a range finder is detachably installed at the bottom end of the mounting bracket. A plurality of sliding assemblies are arranged on the inner walls of both sides of the constant temperature and humidity chamber along the vertical direction at equal intervals, a placing frame is connected between two sliding assemblies at the same height, a placing table is arranged in the placing frame, a placing groove is arranged on the top of the placing table, a mass sensor is installed on the inner bottom surface of the placing frame and connected with the bottom end of the placing table. The application further comprises an external temperature and humidity control device connected with the moisture inlet pipes through a gas pipe. The present application realizes in-situ non-contact deflection measurement and synchronous monitoring of mass change of the gypsum board under the moisture state, has high testing precision, can realize multi-layer synchronous testing, and effectively improves the detection efficiency and data accuracy.

The utility model relates to a gas detection structure for rapid detection of an automobile air quality sensor, which comprises a rotating disk, a gas sensor and a gas sensor, the bracket is arranged on the side of the rotating disc; the pressing mechanism is connected with the bracket in a sliding manner and is arranged right above the bearing plate; the electrifying mechanism is connected with the bracket in a sliding manner and is arranged under the bearing plate; the gas conveying mechanism is arranged on the side of the bearing plate and comprises a front-back moving air cylinder arranged on the support, a gas channel arranged at the output end of the front-back moving air cylinder and connectors arranged on the gas channel at intervals, and the connectors directly face a gas detection inlet of the air quality sensor. According to the utility model, the air quality sensor is placed on the bearing plate, and after the air quality sensor is pressed by the pressing mechanism, the accurate connection between the air passage and the inlet of the air quality sensor and the accurate connection between the electric connection end of the air quality sensor and the electrifying mechanism are ensured, and the detection quality of the sensor can be ensured.

The invention relates to the technical field of power system relay protection, and discloses a transformer gas relay maloperation prevention simulation method based on flow field analysis. Comprising the steps of preparation of a geometric simulation model, generation of a computational domain, division and independence test of computational grids, generation of boundless layer grids, delimitation of boundary conditions and analysis of fluid simulation results and test measurement errors. The method comprises the following specific steps: step s1, preparing a geometric simulation model; step s1.1, constructing a three-dimensional structure model in the gas relay; according to the method, a simulation-test two-way error tracing method is adopted, nine kinds of error sources such as key parameters (such as a simulation value 1.301 m / s vs actual measurement mean value 1.299 m / s), quantitative model simplification, grid quality and sensor precision) such as action flow speed and action time are compared, the prediction accuracy of a verified simulation model reaches 98.7%, quantifiable theoretical support is provided for relay maloperation resistance design, and the method has the advantages of being high in reliability, high in reliability and the like. And a bidirectional error analysis mechanism is realized to guarantee the simulation reliability.

The present disclosure ensures reliability of analysis results by accurately pipetting a specimen and a sample in a predetermined pipetting amount. An automatic analysis device includes: a reagent holder configured to hold a reagent container that contains a reagent; a specimen holder configured to hold a specimen container that contains a specimen; a pipetting mechanism configured to pipette the reagent and the specimen into a reaction container; and a mass sensor configured to measure a mass of the reaction container. The mass sensor includes: a fixing portion; a diaphragm at least a part of which is fixed by the fixing portion; a piezoelectric element joined to the diaphragm; and a container placement portion that is supported on the diaphragm and is configured to hold the reaction container into which a liquid to be measured is discharged.

The invention provides a strongly-weathered red layer soft rock dry-wet cycle testing device and method for monitoring quality change, and belongs to the field of rock mechanics. The test method comprises the following steps: putting a sample into a saturator, hanging the saturator in a vacuum pot, pumping the vacuum pot to a vacuum state through a suction filtration pump, pressing deionized water into the vacuum pot through atmospheric pressure, continuously performing suction filtration until the vacuum pot reaches a relatively vacuum state, and keeping the state for 12-24 hours, and meanwhile, when the state is reached, the mass sensor is used for testing, and measured data is transmitted to a computer in real time. The experimental device and method are easy and convenient to operate, economical and efficient, and can effectively solve the problem that a mechanical experiment cannot be carried out to obtain related mechanical parameters due to the fact that a sample is damaged after a strongly-weathered red layer soft rock dry-wet cycle experiment; meanwhile, the problem that the permeation water absorption capacity of the sample cannot be specifically quantified in the long-time water absorption process is solved by monitoring the quality of the sample in real time.

This invention proposes an integrated temperature detection air quality sensor and detection system. The air quality sensor includes a MEMS sensor unit and a temperature detection unit. The MEMS sensor unit detects the air quality outside the vehicle and adjusts the heating power consumption. It includes a sensor chip, a MOSFET connected to the sensor chip, and multiple resistors. The sensor chip internally connects a heating circuit and a sensing circuit. The temperature detection unit detects the ambient temperature and includes a thermistor and a resistor and capacitor connected to the thermistor. The air quality detection system includes the aforementioned air quality sensor, an MCU module, a power management module, and a LIN communication module. The MCU module receives the detection signal from the air quality sensor and calculates and controls the heating power consumption of the air quality sensor. The power management module provides a stable operating voltage for the entire detection system. The LIN communication module enables communication between the detection system and other systems in the vehicle. This invention ensures the stability of the sensor module's operating temperature and gas-sensing performance.

The invention relates to a method for operating a work station (1) of a spinning machine, wherein during normal operation a thread (3) is drawn from a spinning unit (4) at a drawing speed, wherein the thread (3) is monitored with regard to at least one thread parameter by means of a mass sensor (5), wherein the thread (3) is wound onto a bobbin (7) by means of a winding device (6) at a winding speed, so that a bobbin (8) is formed, wherein the thread (3) is moved back and forth along a traverse width (CB) during the winding onto the bobbin (7), wherein a stop sequence is initiated when a thread error-related anomaly (F) deviating from a nominal value of the at least one thread parameter is detected by the mass sensor (5). The winding speed is reduced during the stop sequence, wherein a thread loop (S) is formed as a result of the speed difference between the winding speed and the drawing speed thus caused. The invention also relates to a work station (1) of a spinning machine.

A refrigerant quality sensor includes an elongated sensor housing comprising a first end wall and a second end wall and at least one side wall extending between the first end wall and the second end wall. A refrigerant inlet and a refrigerant outlet are disposed in the at least one side wall. A light source is disposed at the first end wall. A photosensor is disposed at the second end wall. The photosensor generates an electrical signal corresponding to a quality of refrigerant within the elongated sensor housing.

The utility model relates to the technical field of control circuits, and discloses a hospital intelligent inspection robot driving control system, which comprises a sensor unit, a motion processing unit, a motor driving unit, a photovoltaic charging unit and a main control unit, the sensor unit comprises a sensor control module, and a temperature and humidity sensor, an ultraviolet sensor, an air quality sensor, a gas sensor, an infrared temperature measurement sensor and a heart rate and blood oxygen sensor which are connected with the sensor control module, and the motor driving unit comprises a buffer circuit, a driving H-bridge circuit and a driving connection circuit. The buffer circuit is connected with the main control unit, the buffer circuit is connected with the driving connection circuit through the driving H-bridge circuit, and the driving connection circuit is connected with a driving motor of the robot; cruising of the robot is guaranteed, and the utilization rate is increased; therefore, the robot can greatly improve the efficiency of medical services, reduce the workload of medical staff, and provide more intelligent nursing experience for patients.

A shield member for a mass sensor includes a body including an outer shield surface and an inner shield surface defining shield sides and a body portion that is positioned between the shield sides. The shield member further includes a support member configured to support at least a portion of the body and structured to enable airflow though the support member. The body of the shield member is configured to shield one or more components of a mass sensor from a magnetic field.

The utility model relates to the technical field of landscape elevator security and protection, and particularly discloses a security and protection system for a suspension bridge main tower attached landscape elevator, which comprises a waiting channel, a ticket checking gate, a camera and a weighing platform, the waiting channel is arranged at an elevator doorway, the camera is arranged above the waiting channel, and the camera is connected with an image recognition module and is used for recognizing the number of people in the waiting channel; the ticket checking gate machine is installed at an entrance of a waiting channel and connected with the controller, the controller controls the ticket checking gate machine to open or close ticket checking, a weighing table is arranged at the entrance of the ticket checking gate machine and measures the weight of a ticket checker, and a mass sensor is arranged below the weighing table and connected with a calculation module. The calculation module and the image recognition module are both connected with the controller, the controller controls the ticket checking gate to be opened or closed for ticket checking according to the weight collected by the mass sensor and the number of people recognized by the image recognition module, the number of people entering the elevator and the weight of people entering the elevator are accurately controlled, and overload of the elevator is effectively prevented.

Provided is a heat-drying moisture meter that presents reliability with respect to a measurement result. In order to solve the above problem, a moisture meter includes a mass sensor configured to measure the mass of a sample placed on a weighing dish, a heating chamber having the weighing dish placed inside, a heating unit configured to heat the heating chamber, and an arithmetic control unit configured to calculate the moisture content of the sample from a sample mass before heat-drying and a sample mass after heat-drying by controlling the heating unit. The arithmetic control unit presents the reliability of the moisture content based on the minimum indication of the mass sensor.

The utility model discloses a tobacco leaf quality sensor support for a tobacco curing barn, relates to the technical field of tobacco curing, and solves the problems that a sensor is inconvenient to install and a tobacco curing rod is easy to fall off from the end part in the prior art. The device comprises a bottom supporting piece used for installing a mass sensor, a connecting piece used for being connected with a curing barn wall or a curing barn tobacco airing frame is arranged on the bottom supporting piece, side limiting pieces are symmetrically arranged on the bottom supporting piece, and a bearing protection piece installed on the mass sensor is arranged between the two side limiting pieces. The bottom supporting piece and the bearing protection piece are installed and connected with the quality sensor, the quality sensor is protected, and therefore it is guaranteed that the quality data are well collected by the sensor, and meanwhile the quality sensor is prevented from being abraded by a tobacco rod or a tobacco clamp.

The application discloses an automatic centering mechanism of a sensor, which comprises a supporting mechanism, a supporting ring located at the outer ring of a tray, an angle code fixed on the edge of the tray and located above the supporting ring, the vertical projection of the angle code intersecting with the supporting ring, and the upper surface of the tray always contacting the sensor; the tray is provided below with a lower pressing plate with a fixed spatial position; a lifting mechanism, a plurality of threaded studs vertically penetrating through the supporting ring, the threaded studs being symmetrically arranged along the mirror surface, one horizontal longitudinal transmission rod being connected below the threaded studs on each side, one transverse transmission rod being connected at one end of the two longitudinal transmission rods, and the transverse transmission rod being driven by a first rotary motor; a translation mechanism, the supporting mechanism and the lifting mechanism being driven to horizontally translate; the center lines of the transverse transmission rod and the longitudinal transmission rod forming a H-shaped form, the opening direction of the H-shaped form being directed to the lower pressing plate and being parallel to the translation direction of the translation mechanism. The application is convenient for the translation of a large mass sensor and guarantees the accuracy of the test.

The invention relates to the technical field of driving motor energy-saving assemblies, and discloses a grain cleaning and grading screening machine which comprises a feeding assembly, the top of the feeding assembly is fixedly connected with a feeding chamber, the front end of the feeding assembly is fixedly connected with a driving structure, and the driving structure is specifically a driving motor. A control center is fixedly connected to the surface of one end of the feeding assembly, a screening assembly is fixedly connected to the other end of the feeding assembly, a filter plate is arranged in the screening assembly, a discharging pipe of the feeding assembly is arranged on the top side of one end of the filter plate, and a mass sensor is fixedly connected to the interior of the filter plate and electrically connected with the control center. Vibration assemblies are fixedly connected to the front end and the rear end of the screening assembly, connecting rods are fixedly connected to the tops of the vibration assemblies, the filter plate is fixedly connected between the two connecting rods, the connecting rods are slidably connected to the outer surface of the screening assembly, and the device has the advantages that the energy-saving effect of the lifting device on the driving motor is achieved, and use by a user is facilitated.

The utility model relates to a detection tool of an air quality sensor. The detection tool comprises a base, a rotating shaft assembly, a cover plate, a ventilation assembly and a telescopic rod. Wherein a detection groove is formed in the base, a plurality of air quality sensors to be detected are assembled in the detection groove, and detection inlets of the air quality sensors face the front of the base; the rotating shaft assembly is slidably arranged on the front side of the base in the front-back direction. The cover plate is arranged on the base in an overturning mode through the rotating shaft assembly. The ventilation assembly comprises a detection gas source, a gas conveying pipe and a plurality of gas outlet pipes which are communicated in sequence; the plurality of air outlet pipes are arranged on the bottom surface of the cover plate and correspond to the air quality sensors; the front end and the rear end of the telescopic rod are connected with the rotating shaft assembly and the base correspondingly so that the cover plate can be pulled backwards to make the air outlet pipe abut against a detection inlet of the air quality sensor when the cover plate is closed to the base. Compared with the prior art, the sealing performance between the detection gas outlet and the detection inlet of the air quality sensor can be effectively improved.

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment medicament quantitative adding device which comprises a support frame body, a vertical plate, an extension frame, a fixed plate and a medicament temporary storage cylinder, wherein a medicament storage barrel is mounted at the top of the supporting frame body, and a first electric control valve body is arranged at the liquid discharging end of the bottom of the medicament storage barrel; wherein the vertical plate is fixed on one side of the support frame body. Through linkage of the mass sensor, the first electric control valve body, the second electric control valve body and the control display screen, a high-precision weighing type quantitative control system is formed, a medicament is accurately metered and put into the medicament temporary storage barrel from the medicament storage barrel at first, and then the medicament is added; the metering error of a traditional flow pump caused by the change of the medicament viscosity and the pipeline pressure is effectively avoided, high-precision quantitative feeding in the real sense is achieved, the treatment effect is greatly improved, and the medicament cost is saved.

A method for splicing two sheets of material is provided, including: providing a processing line including a splicing head and a quality sensor located between upstream and downstream ends of the processing line; providing first and second sheets of material; processing the first sheet on the processing line along a processing direction from the upstream end towards the downstream end; detecting, by the quality sensor, a value of a quality parameter at a detected portion of the first sheet; and, when the value falls within a predetermined threshold, transporting the first sheet along the processing line such that the detected portion is located prior to getting into the splicing head from the upstream end, and splicing the first and the second sheets at the splicing head when the detected portion is located prior to getting into the splicing head from the upstream end.

Systems, methods, and computer-readable media for calibrating air quality sensors are provided. A sensor node includes a sensor node printed circuit board, a sensor module, and a communication module. The sensor node printed circuit board manages power of the sensor node circuitry, the sensor module, and the communication module such that power is provided from a primary power supply supplemented by a secondary power supply. The sensor module includes a plurality of air quality sensors to measure the concentration of air pollutants. The sensor module may be replaceable. The communication module may communicate air quality measurements to and receive configurations from a data management platform, which may perform processes to improve the accuracy of the air quality measurements.

The invention relates to an air quality sensor. A housing has a flow channel for guiding air to be measured through the housing; at least part of the first sensor is inserted into the flowing channel, the flowing channel comprises a measuring channel and a bypass channel, and the first sensor is configured to be used for detecting forward airflow flowing in from the first opening and flowing out from the second opening and reverse airflow flowing in from the second opening and flowing out from the first opening. According to the scheme, reverse airflow can be detected, the influence of pulsating airflow is reduced, and the measurement precision is improved.

The application discloses a one-key production control method and system for mixed emulsion explosive, and relates to the field of automation and intelligent control. The application solves the problems of low efficiency, high cost, quality fluctuation and process uncertainty in the production of traditional mixed emulsion explosive through automation and intelligent control means. The application realizes accurate feeding of raw materials by using a quality sensor array and a PID control algorithm, ensures the stability of production parameters through multi-sensor data fusion and advanced control algorithm, and further improves the consistency of product quality. At the same time, a feedback control loop and a continuous learning mechanism are established to realize closed-loop control of the production process, optimize process parameters, ensure production stability and reliability, significantly improve production efficiency and product quality, and reduce labor costs.

The invention relates to a method for adapting an SCR system (12) of an exhaust aftertreatment device (10) for aftertreating exhaust gas of an internal combustion engine of a motor vehicle, in which the SCR system (12) comprises at least one SCR catalyst (14, 16), a metering device (26) by means of which a reducing agent (34) can be introduced into the exhaust gas, a reducing agent tank (32) for receiving the reducing agent (34), a quality sensor (38) for determining the quality of the reducing agent (34), a level sensor (36) for detecting the level of the reducing agent (34) in the reducing agent tank (32) and a control unit (40). The control unit (40) stores a quality end value in a non-volatile memory at one end of a first driving cycle of the motor vehicle, which characterizes the quality of the reducing agent (34) taken up in the reducing agent tank (32) at the end as determined by the quality sensor (38).

The invention belongs to the technical field of powder pneumatic conveying, and particularly relates to a method and device for measuring the powder particle picking speed. According to the method, to-be-detected material powder flatly laid on a tray of a mass sensor is placed in a rectangular air pipe, fully developed turbulent airflow in the pipe is created, the air speed in the air pipe is gradually increased, sampling and particle size analysis are triggered according to the change of the weight loss rate of the mass sensor, and the particle size of the to-be-detected material powder is measured. Therefore, the picking speed corresponding to the powder particles with different particle sizes of the material is obtained. According to the invention, the turbulent flow which is completely developed in the pipe is created, and'zero-returning of the weight loss rate 'is taken as a unique triggering condition for sampling, so that the powder particle size interval corresponding to each sampling is accurately determined by the current wind speed, and a reliable and accurate corresponding relation between the wind speed and the particle size is established; and errors caused by manual judgment in a traditional method are overcome.