1378results about "Level indicators by physical variable measurement" patented technology

A non-invasive liquid integrity monitoring system using dielectric fingerprinting and machine learning to detect and identify contamination in sealed containers is described. The system may employ externally-mounted sensors that measure dielectric properties through electromagnetic interrogation, comparing measurements against baseline signatures to detect deviations indicating contamination, tampering, or degradation. Industry-specific ML models enable identification of specific contaminants with confidence, providing alerts without breaching container integrity.

The invention relates to the technical field of hydrological survey, in particular to a water level photography monitoring method and device for eliminating water surface inverted image interference, and the method comprises the steps: carrying out the distortion correction of an original water gauge image, and obtaining a distortion correction image; classifying the distortion correction images to obtain day and night classification images; performing water surface line detection on the day and night classification images, identifying an initial water surface line, and correcting the initial water surface line to obtain a corrected water surface line; adaptively positioning a water gauge foreground prompt point and a non-water gauge background prompt point based on the corrected water surface line; inputting the day and night classification image, the water gauge foreground prompt point and the non-water gauge background prompt point into an SAM image segmentation model based on a cross attention mechanism to obtain a water gauge mask segmentation result; and obtaining the water level of the water body according to the water gauge mask segmentation result and the water level identification model. Real-time monitoring of the water level of the water body is achieved through the technologies of the self-adaptive prompt points, the image segmentation model and the like, and interference of water surface reflection on water level measurement is effectively overcome.

The invention provides an intelligent analysis method for the oil temperature and the oil level of a transformer. The method comprises the following steps: S1, acquiring oil temperature and oil level data of a transformer, generating displacement diagrams of two data in a coordinate system, drawing an actual oil temperature and oil level curve, and comparing the actual oil temperature and oil level curve with a standard oil temperature and oil level curve given by a manufacturer; s2, generating a relation function between the oil level and the oil temperature by using the transformer oil temperature and oil level monitoring, checking and analyzing device, and performing data comparison with a standard oil temperature and oil level curve given by a manufacturer; s3, analyzing whether the deviation between the oil temperature and oil level curve and a standard oil temperature and oil level curve given by a manufacturer exceeds an allowable value or not under the high-temperature and low-temperature operation conditions; according to the invention, quantitative data analysis can be carried out on the oil temperature and the oil quantity of the oil-immersed transformer.

The invention discloses a three-wire series electronic water gauge circuit, which includes a cascade of water level detection subcircuits arranged at equal intervals, a voltage divider circuit, and a microprocessor. The water level detection subcircuit is composed of a PMOS tube, a resistor, a detection electrode, and a common electrode. Whether the water body contacts the detection electrode is used to determine the conduction and cutoff of the PMOS tube, and then determine whether a low-impedance path is provided for the detection signal transmission. After multi-stage series transmission, the microprocessor MCU finally uses AD to perform analog-to-digital conversion to obtain a voltage value and compare it with a reference voltage to obtain water level information. The three-wire system of the invention replaces the previous four-wire system, and the analog signal replaces the digital signal. It has the characteristics of ultra-low power consumption, wide power supply voltage range, wide operating temperature range, light weight, small size, fast response speed, strong anti-interference, strong corrosion resistance, etc. It can reach IP68 through soft glue filling for waterproof treatment, and is further processed into a flexible electronic water gauge.

The invention discloses a method and system for monitoring the lake water level based on remote sensing images, and particularly relates to the technical field of remote sensing monitoring, and the method comprises the steps: constructing a complete three-dimensional terrain model of a lake through historical remote sensing images and data of underwater detection equipment, including water surface and underwater shapes; a quantitative relation model of the terrain and the water level is established by utilizing a digital twinborn technology and actually measured water level data, the model is repeatedly tested and optimized, the precision is ensured, and the model is finally applied to real-time water level monitoring, so that the water level information of a target lake is automatically acquired and updated; the problem that a terrain-water level relation model is difficult to accurately monitor lake water level changes in the prior art is solved. The system further comprises a water body boundary correction module and a boundary contour processing module, the boundary of the lake is recognized and extracted more accurately through a remote sensing image and a machine learning model, the boundary is optimized, and accuracy and completeness of water body information are guaranteed.

A food waste disposer comprises: a cover housing; a disposal device which is positioned in the cover housing to accommodate food waste; an exhaust pipe to be connected to the disposal device so as to guide moisture-containing air; a water storage container which may collect condensate water in the exhaust pipe and may be separated to the outside of the cover housing; a water storage housing to accommodate the water storage container; and a sensor module which comprises a water level sensor coupleable to the water storage housing, which based on the water level sensor being adjacent to the water storage container outputs a signal related to the water level of the condensate water collected in the water storage container, wherein the water level sensor detects the water level of the condensate water in the water storage container by making contact with the water storage container.

A refillable liquid tip or cartridge for a vaping device includes a capacitive sensor plate located in a tip liquid reservoir. The liquid refilling device provides the liquid sucked from the refilling bottle to the vapour device; the refilling device comprises a capacitance measuring circuit; a microcontroller uses data from the capacitance measurement circuit to determine whether a liquid level in the tip liquid reservoir is above or below a threshold level, if below, activates a liquid pump in the refill device to draw liquid from the refill vial, and if not, activates a liquid pump in the refill device to discharge liquid from the refill vial. And pumping the liquid through the vapour device and up into the tip liquid reservoir. The pumping is stopped once the liquid reaches the threshold level.

The embodiment of the invention discloses a tea steaming control method based on capacitance liquid level detection, and relates to the technical field of tea steaming, the tea steaming control method is applied to the tea steaming function of a tea bar machine, the tea bar machine comprises a liquid container, a water suction pump and a water level detection area arranged on the side wall of the liquid container, and a plurality of longitudinally distributed electrode plates are arranged in the water level detection area; the method comprises the following steps: executing a heat preservation process after executing a first tea boiling and steaming operation according to a preset first tea steaming parameter; after the user performs at least one time of tea water taking operation, the real-time remaining water level in the liquid container is collected through the water level detection area; when the real-time residual water level meets a preset tea making parameter adjusting threshold value, the first tea steaming parameter is adjusted according to the real-time residual water level and the pre-obtained tea steaming frequency corresponding to the first tea boiling and steaming operation, and tea steaming control is conducted according to the adjusted second tea steaming parameter. By dynamically adjusting the tea steaming parameters, it is ensured that the appropriate tea water concentration can be obtained in each time of tea steaming, and therefore the tea drinking experience of a user is remarkably improved.

The invention discloses a hot die forging press with a lubricating oil detecting and supplying function, and relates to the technical field of hot die forging presses, the hot die forging press comprises a mounting frame, a forging and pressing unit, a detecting unit and a controller, the mounting frame is used for mounting and fixing the forging and pressing unit, the detecting unit and the controller, and the forging and pressing unit is used for forging and pressing forgings; the detection unit is used for liquid level detection and automatic supply of lubricating oil, the controller is used for controlling opening and closing of the forging unit and the detection unit, and when forging is needed, the controller controls the forging unit to start to hammer the forging and controls the detection unit to spray the lubricating oil to the surface of the forging to form an oil film to protect the forging. And when the detection unit detects that the lubricating oil is insufficient, the lubricating oil is automatically supplied, and the situation that the forging cannot be lubricated due to the insufficient lubricating oil, and the forging quality is affected is avoided.

The invention provides a total reflection type photoelectric liquid level sensor, which comprises a shell, a first cavity, a second cavity and a liquid level sensor, the optical lens is installed in the shell, stretches across the first cavity and the second cavity and is located between the transmitting module and the to-be-detected pipeline and between the receiving module and the to-be-detected pipeline; the control module is connected with the transmitting module and the receiving module and used for driving the transmitting module to output the optical signal towards the to-be-detected pipeline, receiving the electric signal output by the receiving module and determining a detection result according to the electric signal, and the detection result comprises whether liquid exists in the to-be-detected pipeline or not. The beneficial effects of the invention are that based on the principle of total reflection of light, high-precision and non-contact detection of the existence state of the liquid in the to-be-detected pipeline is realized, the unique design enables light emission and receiving to be completed on the same side of the pipeline, matching according to the pipe diameter size of the pipeline is not needed, the production cost is reduced, and the flexibility, universality and versatility of the sensor are improved.

An urban flooding condition monitoring device and prediction method based on an accumulated water level rise speed. The monitoring device comprises: a monitoring module, which comprises a housing (008) mounted on a road to be monitored, a water inlet passing through a side wall of the housing (008), and water level contact points (009) distributed on a side wall of the housing (008) in the height direction, the water inlet being used for allowing accumulated water to flow into the housing (008) when water is accumulated on a road, such that the accumulated water comes into contact with the water level contact points (009) at different heights; and a control system, which comprises a control module, and a contact module, a storage module and a signal transmission module which are connected to the control module separately, wherein the contact module is provided with the water level contact points (009) for acquiring water level data information sensed by the water level contact points (009), the storage module is used for storing the water level data information acquired from the contact module, and the signal transmission module is used for transmitting, to a superordinate computer, the water level data information stored in the storage module. The prediction method can monitor the water level of the accumulated water in urban depressed areas in real time, and predict the water level evolution trend of the accumulated water of urban depressed bridges in advance.

This method is applicable to the technical field of bridge construction and provides a method for real-time monitoring and evaluation of the force-bearing state during the casting process of a steel-pipe concrete arch bridge. The solution involves identifying environmental background points in the RGB three-dimensional matrix for the entire bridge within the range between the maximum and minimum RGB values ​​in the local RGB three-dimensional matrix for the steel pipe, representing environmental background temperature points in the temperature information matrix, and identifying concrete pouring points based on whether the unit matrix condition for the temperature of the steel dome pipe is met. The system also obtains the horizontal axis of the pixel at the center of the poured liquid surface in the left and right half arches in a Cartesian coordinate system, divides the entire arch rib to be poured into 2n equal parts, and calculates the cross-sectional displacement response of each structure based on the cross-sectional displacement caused by the load action of each segment. This allows for real-time, efficient, and accurate observation of the difference in concrete liquid surface level on both sides, allowing for the structural response during pouring to be determined and reducing the construction risk of arch bridges.

A beverage dispenser having a beverage-level indicating system. The beverage dispenser includes a housing and a dispensing head arranged on the housing for dispensing a beverage into a beverage container. The beverage dispenser further includes a beverage-level sensor arranged on the housing and which determines a beverage level within the beverage container without contacting the beverage within the beverage container, a beverage-level indicator that provides a visual indication of the beverage level within the beverage container, and a control unit that causes the beverage-level indicator to indicate the beverage level within the beverage container based on the beverage level as determined by the beverage-level sensor.

The invention discloses a high-precision liquid level moving position measuring assembly and method, and the assembly comprises a crucible which is filled with a silicon liquid; the guide cylinder is arranged above the silicon liquid, and a high-temperature-resistant component is arranged at the bottom of the guide cylinder; the crystal bar cooling device is arranged above the silicon liquid, the crystal bar cooling device is arranged in the guide cylinder, and a plurality of crystal pulling holes are formed in the bottom of the crystal bar cooling device; the camera is used for acquiring the high-temperature-resistant component and the image of the inverted image of the high-temperature-resistant component on the silicon liquid level; the controller is used for receiving and processing data transmitted by the camera; a protrusion is arranged on the high-temperature-resistant component, and a through hole is formed in the protrusion. The high-precision liquid level moving position measuring assembly and the measuring method are convenient to use, through camera measurement and controller control, the moving positions of the bottom of a crystal bar cooling device and the liquid level of raw material silicon liquid are measured and controlled in real time, and therefore the diameter of a crystal bar can be controlled.

A vehicle includes a mixing drum rotatably coupled to a chassis, a fill level sensor configured to provide a signal indicative of a fill level of a material within the mixing drum, an axle assembly including a first tractive element, a suspension actuator coupled to the axle assembly and configured to apply a biasing force that forces the first tractive element into engagement with a ground surface, a lift axle including a second tractive element, a lift actuator coupled to the lift axle, and a controller. The controller is configured to calculate a target weight to be supported by at least one of the first tractive element or the second tractive element based on the fill level of the material within the mixing drum and control the suspension actuator to vary the biasing force based on the target weight.

Systems, methods, and devices relate to a smart sensor usable for monitoring materials within container systems. A smart sensor device may include a base portion provided on an exterior of a tank containing a material, and an internal cavity housing a sensor to detect a level of the material within the tank through an outer surface of the container. The smart sensor device may track readings over time, from one or more container systems, and identify various usage trends. Usage trends and safety alerts may include current supply levels, historical usage rates, and low-level alerts. Such alerts and notifications may be communicated to a dashboard on a remote computing device.

The invention provides an underground water level and conductivity accurate measurement system, which comprises an underground probe module, a three-core composite cable and a water level measurement module, the outside-well module is used for deploying a microprocessor, a serial communication bus and a lithium-thionyl chloride battery pack outside a well, and then correcting and initially presetting and calibrating acquired signals; the precise monitoring module is used for carrying out multi-stage filtering processing and final state estimation on the signals to obtain multi-channel fusion data; the misjudgment eliminating module is used for performing multi-layer measurement judgment and dynamic confirmation to obtain a real water level point; the model calculation module is used for carrying out water level inversion by utilizing a hydrological model to obtain hydrological parameters of a well hole and a water-bearing layer; and the data platform module is used for pushing, storing and visually displaying real-time data streams. The method can adapt to high-precision multi-parameter real-time monitoring under extremely complex well conditions, the recognition accuracy of underground water parameters such as the water level and the conductivity is greatly improved, the misjudgment risk is reduced, and accurate underground water level measurement is achieved.

The present invention aims to easily calculate a calibration formula for calibrating a liquid hydrogen level gauge using a superconductor at low cost without using expensive liquid hydrogen. [Solution] A calibration equation calculation method for calculating a calibration equation to calibrate a liquid hydrogen level gauge that uses a superconductor to detect the liquid hydrogen level in a container by voltage measurement, the method being characterized in that the calibration equation is calculated from the relationship between the voltage value of the liquid hydrogen level gauge and each liquid level height at at least three points with different liquid level heights while pouring liquid having a temperature higher than the critical temperature (Tc) of the superconductor used in the liquid hydrogen level gauge into the container in which the liquid hydrogen level gauge is installed vertically.

The invention particularly relates to a liquid level monitoring system for a flow battery based on machine vision. The liquid level monitoring system comprises an image acquisition module; the liquid level detection module is used for analyzing based on the liquid level image of the flow battery to obtain an analyzed and evaluated liquid level of the flow battery; the display and interaction module is used for outputting and presenting the liquid level detection result; and a system control module. According to the method, the first evaluation liquid level preliminarily locates the liquid level contour in a rapid gradient calculation mode, the second evaluation liquid level accurately extracts the edge through multi-stage processing, and the two parts complement each other; in the comprehensive analysis stage, by means of unique mean value calculation, a method for constructing a geometric model based on liquid level deviation and calculating a difference coefficient, and in combination with a preset threshold value, an additional liquid level value is matched, errors of a single detection method can be effectively eliminated, and detection deviation caused by factors such as environment interference and image noise can be corrected.

A method and apparatus are provided. An aerosol-generating device includes a chamber configured to store a liquid aerosol-generating material, a main body including a partition wall facing the chamber, a conductive member provided on one surface of the chamber facing the partition wall, and a level sensor configured to sense an amount of the liquid aerosol-generating material stored in the chamber, in which the level sensor is configured to sense the amount of the liquid aerosol-generating material by applying current to the conductive member and measuring a voltage value that varies depending on a capacity of the liquid aerosol-generating material.

The utility model relates to the technical field of silicon carbide crystal growth, in particular to a vacuum device and a detection device for monitoring the contact position of a seed crystal and a melt. The utility model provides a vacuum device which comprises a fixing device and an electrode binding post. The fixing device further comprises a flange upper cover, a metal window flange and a base. The utility model provides a detection device for monitoring the contact position of the seed crystal and the melt. The device comprises the vacuum device, a lead and a universal meter, according to the detection device, the contact condition of the seed crystal and the melt liquid level can be judged by observing the change of the universal display number. When the seed crystal is in contact with the liquid level of the melt, sudden change of the reading of the resistance value of the universal meter is triggered to judge the welding position of the seed crystal, so that the problem that the welding process of the seed crystal cannot be observed is solved, and the conditions that the seed crystal is not in contact with the liquid level of the melt and the seed crystal is excessively immersed below the liquid level of the melt can be avoided; the growth stability of the silicon carbide single crystal is improved, and the quality of the single crystal is improved.

The present application relates to a kind of water spraying truck water level intelligent control system, including frame, the top of the frame is fixed with water tank, the tail of the water tank is fixedly installed with display screen, the bottom of the frame is fixedly connected with scissor frame, the frame and the scissor frame are fixedly connected with first electric push rod, the frame is driven connection with spray pipe between the scissor frame, the spray pipe includes main spray pipe and vice spray pipe, the bottom of the scissor frame is fixedly connected with main spray pipe, the both ends of the main spray pipe are hingedly connected with vice spray pipe, the main spray pipe is communicated with the vice spray pipe, the second electric push rod is fixedly connected between the vice spray pipe.The present application not only solves the problem that the working distance is not easy to control in the prior art when water spraying truck works, leading to often spraying to half without water, or after spraying work is completed, there is still a lot of water in water tank, but also can increase spraying area, improve work efficiency.

The invention relates to a method and system for accurately measuring the liquid level of printing and dyeing sewage. The method comprises the steps that heat distribution information and environment temperature detection data are obtained; correcting the thermodynamic distribution information by using the environment temperature detection data, splitting the corrected thermodynamic distribution information based on a preset splitting and combining rule, and recombining to obtain a plurality of pieces of dispersed thermodynamic distribution information; inputting the dispersed thermal distribution information into a preset rationality analysis model to obtain thermal distribution rationality information; and obtaining a measurement result according to the thermodynamic distribution rationality information. The device has the effect of improving the accuracy of printing and dyeing sewage liquid level measurement.

The invention discloses a gradient thermocouple liquid level real-time detector, and relates to the technical field of liquid level detection, an integrated gradient thermocouple probe rod structure is adopted, a plurality of groups of thermocouple nodes are integrated on a single corrosion-resistant alloy integrated gradient thermocouple probe rod according to a preset interval through a special process, and a continuous temperature gradient sensitive area is formed. A high-precision signal processing circuit is embedded in the integrated gradient thermocouple probe rod, the temperature difference potential of each node is collected in real time, the liquid level height is calculated based on a dynamic temperature field modeling algorithm, and full-scale continuous measurement is achieved. Gradient node distributed layout is created for the first time, and a blind area of traditional point type measurement is eliminated; a self-adaptive temperature compensation mechanism is developed, and medium layering and boiling interference are overcome; the integrated gradient thermocouple probe rod adopts vacuum sealing and a nanometer heat insulation coating, and can resist a high temperature of 600 DEG C and a high pressure environment of 40 MPa. The device has millimeter-level measurement precision and millisecond-level dynamic response capability, does not need to move parts or external radiation sources, and remarkably improves the reliability, safety and installation convenience of liquid level monitoring of industrial reaction kettles and high-pressure boilers under extreme working conditions.

The invention provides an ostomy bag and a capacity detection system thereof. The ostomy bag comprises a collection bag for collecting ostomy excrement and a signal display for displaying the capacity state of the collection bag, the collecting bag comprises an inner side wall close to the skin and a corresponding outer side wall; the side wall of the collection bag is provided with an information collector for sensing the capacity change of the collection bag and an information transmitter for transmitting the information of the information collector; the information collector comprises a magnetic field information collector or a bending sensor arranged on the outer side wall of the collecting bag; the signal display performs information transmission with the information transmitter through wireless signals and displays capacity information; the ostomy bag can be matched with a capacity detection system to transmit the total content of the ostomy bag to an external signal display at any time, so that the total content is fed back to a patient, observation is facilitated, and an alarm can be given in time; the device can be adapted to most ostomy bags on the market; the material can be recycled and is low in cost.

The invention discloses an intelligent water level detection method, system and device for a water conservancy project and a medium, and belongs to the field of detection. The device is suitable for a surge water flow environment, and through the deployed dual-working-mode electrode, reset signals are circularly collected and filtered to obtain a pure target voltage sequence. Through difference calculation and threshold comparison, a continuous voltage sequence is converted into a discrete voltage jump event sequence containing time, direction and amplitude. The occurrence frequency, the interval duration and the amplitude statistical value of the event sequence are calculated through a sliding time window, and a time domain feature vector sequence is generated; the feature vector sequence is input into a pre-trained hidden Markov model to decode a non-contact, surge or continuous contact state sequence of each electrode. Finally, the state sequence of the multiple electrodes is analyzed, the final reliable water level monitoring information is determined by confirming the continuous and stable contact state, the real water level and surge interference are effectively distinguished, and the reliability and accuracy of the water level detection result can be improved.

The invention discloses a three-mode switching type sewage plant biochemical pool inspection robot control system, and belongs to the technical field of robot inspection, the three-mode switching type sewage plant biochemical pool inspection robot control system comprises a composite moving system, an integrated crawler walking module, a buoy module and a propeller module, and the three-mode switching type sewage plant biochemical pool inspection robot control system is used for controlling and switching walking modes of an inspection robot; the mode switching triggering mechanism is used for switching the composite moving system to the crawler walking module, the buoy module or the propeller module according to the water depth; the multi-source heterogeneous sensor monitoring module is used for detecting environmental data in real time through a multi-source heterogeneous sensor; and the path planning module is used for fusing monitoring data of the multi-source heterogeneous sensor, optimizing a global path by adopting an improved ant colony algorithm, and carrying out dynamic obstacle avoidance in combination with a D * Lite algorithm. Switching of multiple propelling modes is supported, and limitation of a single moving mode of a traditional robot is broken through; and meanwhile, monitoring data of heterogeneous sensors are aligned, and dynamic obstacle avoidance is performed by adopting an improved ant colony algorithm in combination with a D * Lite algorithm, so that the accuracy of path planning is improved.

The invention provides a multi-stage siphon water level sensing device based on a friction nanometer generator, and aims to overcome the defect that an existing TENG water level sensing device is easily interfered by the environment. The device performs graded monitoring on the water level through a multi-stage siphon structure, and the higher the water level is, the more the triggered siphons are, so that the variable electric signal frequency is generated, and the water level height is accurately reflected. The siphon unit is composed of siphons arranged in an array mode, and each siphon is provided with a water inlet pipe, a water outlet pipe and an exhaust pipe. Through arrangement of a siphon starting position, different water level heights correspond to starting of different siphons. The outlet flow of the siphon unit is converged to the water turbine, the water turbine works through the TENG to generate an electric signal, and the frequency is related to the water level height. The device has the advantages of efficient energy collection, self-driving, durability and reliability, and can bring a major breakthrough to the field of water level monitoring.

An aerosol generating device includes a main body including a semi-exterior portion having an accommodation space into which a cigarette is inserted, a cartridge detachably coupled to the semi-exterior portion, an antenna arranged on a surface of the semi-exterior portion to face a surface of the cartridge, a sensor configured to sense a capacitance of the antenna, and a controller electrically connected to the sensor. The controller is configured to determine, based on the capacitance, a residual quantity of an aerosol generating material in the cartridge and whether or not the cartridge is detached.

A re-fillable liquid tip or pod for a vaping device that includes capacitive sensor plates in the tip liquid reservoir. A liquid re-filling device provides liquid to the vaping device, drawn from a refill bottle; the re-filling device includes a capacitance measuring circuit; a microcontroller uses the data from the capacitance measuring circuit to determine if the level of liquid in the tip liquid reservoir is above or below a threshold level; if below, then a liquid pump in the re-filling device is activated to draw liquid from the refill bottle and pump it through the vaping device and up into the tip liquid reservoir. Pumping ceases once the liquid reaches the threshold level.