89results about "Level indicators by physical variable measurement" patented technology

A liquid level sensor can include a circuit board and a thermistor bridge supported by the circuit board comprising a first pair of thermistors and a second pair of thermistors. A heat sink can be coupled to the circuit board proximate the first pair of thermistors and not the second pair of thermistors. A power supply can be configured to provide pulses of electrical current through the thermistor bridge. A controller in communication with the thermistor bridge can be configured to receive a measurement signal from the thermistor bridge output a low product indication when the measurement signal satisfies a predetermined condition.

One or more sensors generate signals that can be used to detect at least one of a volume measurement or a volume flow measurement of plant debris or other material generated by a work machine. The volume measurement can be made in a container that holds the plant debris or other material. The volume measurement and / or the volume flow measurement can be used to characterize a work region covered by the work machine.

The present invention concerns a measuring lance (1) for measuring a position (has) of an air-slag interface (2as) between an atmosphere (4) and a slag layer (2) sitting on top of a molten metal (3), and a position (hsm) of a slag-metal interface (2sm) between the slag layer (2) and the molten metal (3) in a single measurement run, comprising: • a carrier tube (5) extending along an axis (X) between a proximal end (5p) and a distal end (5d) located downstream of the proximal end, • a measuring unit (6) coupled to the distal end (5d) of the carrier tube (5) and configured for passing through the slag layer (2), the measuring unit (6) comprising, o an electric circuit (7) configured for detecting the air-slag interface (2as), o a slag-metal interface detection unit (8) located downstream of the distal end (5d), comprising at least first and second electric measuring terminals (8ta, 8tb), and configured for measuring values of a first material property at the position (hsm) of the slag-metal interface (2sm) between the slag layer (2) and the molten metal (3), and o preferably a sensor unit (9) comprising first and second electric sensor terminals (9ta, 9tb) and configured for measuring values of a second material property of the slag layer (2) and of the molten metal (3), o a cap (10) enclosing the slag-metal interface detection unit (8) and optionally the sensor unit (9), configured for separating the slag-metal interface detection unit (8) from an outer environment.

The utility model provides an expand fragrance device, including liquid storage bottle, liquid level detection electrode, reference electrode and with liquid level detection electrode, the controller of reference electrode electric connection, liquid level detection electrode, reference electrode set up on the outer wall of liquid storage bottle or be located the outside of liquid storage bottle and be equipped with the gap between liquid storage bottle, liquid level detection electrode and reference electrode along liquid level height direction distribution, the controller calculates the liquid level height in liquid storage bottle according to the detection signal of liquid level detection electrode, reference electrode.

A fluid separator with solid level indicator includes a container having a cavity. The container includes a fluid inlet and multiple fluid outlets. The fluid separator further includes a fire tube extending into the cavity to dissipate heat into the cavity. The fluid separator also includes a thermochromic indicator that is on the outside of the container, where the thermochromic indicator covers at least a portion of the container. A color of the thermochromic indicator depends on a temperature of the container at a location of the thermochromic indicator on the outside of the container. The temperature of the container at the location of the thermochromic indicator depends on whether the container contains solid at an inside location that is at least partially aligned with the location of the thermochromic indicator.

Apparatus and associated methods relate to a dispenser system (100) having an audio spectral generation module (ASGM) (120) configured to interact with sound waves generated by the opening of a container (105) disposed within the dispenser system (100) to generate an audio target spectral profile (ATSP). Container (e.g., recyclable, such as a metal can) (105) is operably coupled to a dispenser (104). The dispenser system (100) includes a closure assembly (110) and a reusable dispensing cap (115). The container (105) is placed in closure assembly (110) that is configured to connect with reusable dispensing cap (115). The reusable dispensing cap (115) includes an aperture (120). As a user rotatably connects the closure assembly (110) with the reusable dispensing cap (115), an opening element of the reusable dispensing cap (115) may engage with a score (130) of the end of the container (105). As a dispenser (104) is coupled to the reusable dispensing cap (115) and operated to open the container (105), the opening element opens the container (105) end along the score (130).

The aerosol generator includes a chamber for storing liquid-phase aerosol-generating material, a main body including a partition wall facing the chamber, a conductive member provided on one side of the chamber facing the partition wall, and a level sensor for detecting the amount of liquid-phase aerosol-generating material stored in the chamber. The level sensor applies an electric current to the conductive member and measures a voltage value that changes according to the volume of liquid-phase aerosol-generating material, thereby detecting the amount of liquid-phase aerosol-generating material.

The invention discloses a vibration sensor. A transducer device (2) comprises a first piezoelectric element (21) and a second piezoelectric element (22), each having a first segment (S1) with a first polarization and a second segment (S2) with a second polarization. The polarizations (P1, P2) are opposite to each other. The piezoelectric elements (21, 22) are arranged in a stack (23) with a longitudinal axis (L) such that they are rotated relative to each other by an angle of 90° about the longitudinal axis (L).

The aerosol generation system includes: a liquid storage portion (201, 1201) for holding a liquid aerosol forming matrix (202, 1202); a pair of electrodes (320) arranged adjacent to or within the liquid storage portion; a sensor (110) configured to sense the orientation of the liquid storage portion; and a control system (104). The control system is configured to: measure an electrical quantity between the electrodes; receive orientation information from the sensor; and determine the amount of liquid aerosol forming matrix held in the liquid storage portion based on the electrical quantity information measured between the electrodes and the orientation information received from the sensor.

A water heating system 1 comprises a vessel 2 holding water and receiving heat from heat sources 12, 20. A temperature sensor 24 comprises a plurality of sensing elements (102, Fig. 10) and senses a t

An ostomy bag can include one or more sensors for measuring one or more metrics. An ostomy wafer can also include one or more sensors for measuring one or more metrics. The sensors can be temperature sensors and / or capacitive sensors, for example, and the metrics can include bag fill, leakage, skin irritation, and phase of stoma output, among others.

The application discloses a liquid level detection circuit, device and method, which increases a second detection impedance in parallel with an original first detection impedance, and configures the state of two detection impedance loops through a first control pin and a second control pin of the detection circuit respectively. When a detection voltage is applied, the voltage level on one side of the two detection impedances is first pulled low, the current of the detection circuit is increased in the form of reducing the impedance of the detection circuit, so that the liquid between the two detection electrodes is accelerated to ionize and reach a steady state as soon as possible. Meanwhile, in combination with the control of delay detection, after the set time of satisfying the ionization of the liquid to reach a steady state is reached, the second control pin is configured to be in a high resistance state, and the first control pin maintains an output low level, so that the normal detection circuit is restored. Then, the liquid level voltage is obtained through the voltage division of the first detection impedance, so that the technical effects of quickly and stably obtaining the liquid level voltage and realizing faster and more real detection of the liquid level are achieved.

The present invention provides an automatic water replacement assembly and a self-cleaning maintenance station. The automatic water replacement assembly comprises: a control apparatus and a water tank assembly. The control apparatus is provided inside the water tank assembly and configured to implement automatic injection of clear water into the water tank assembly. The water tank assembly comprises: a clear water tank body; a water inlet pipe configured to inject clear water into the clear water tank body; and a float valve provided in the clear water tank body and configured to vertically move as the height of the water surface in the clear water tank body changes. In response to the float valve located at a first position, the control apparatus controls the water inlet pipe to stop injecting clear water into the clear water tank body; in response to the float valve located at a second position, the float valve blocks an outlet of the water inlet pipe for water injection to the clear water tank body.

The application relates to a gravity bead chain positioning guide mechanism and a floating ball liquid level detector. The gravity bead chain positioning guide mechanism comprises a bead belt assembly and a winding and unwinding assembly. The winding and unwinding assembly comprises a coiling cylinder, a shell and a handle. In actual use, the gravity bead chain positioning guide mechanism is arranged to wind the bead belt assembly, so that the bead belt assembly can be prevented from being easily wound and knotted in the redundant winding process, the bead belt assembly can be smoothly dropped into or taken out of the measuring cylinder, the number of rotation circles of the coiling cylinder can be accurately controlled through the handle, the release length of the bead belt assembly is controlled, the stability of the coiling cylinder is improved through manual rotation of the handle, and the stability of the bead belt assembly in the dropping or taking out of the measuring cylinder is improved.

This invention relates to the field of air conditioning technology, specifically a method and system for providing an early warning of full water level in an air conditioning indoor unit based on condensate water level monitoring. The method includes the following steps: Step S1: When the water level sensor is installed in the drip tray, a reference current indicating no water is obtained; Step S2: Based on the reference current, a deviation threshold is obtained, and the reference current and the deviation threshold are stored in the non-volatile Flash memory of the air conditioning MCU; Step S3: The current value of the water level sensor is obtained as the first current, and it is determined whether the first current is greater than the current threshold. If it is greater, it is determined that the drip tray is blocked, and an alarm message is sent to a preset communication address; Step S4: A reset signal is received, the deviation threshold is retrieved from the non-volatile Flash memory, and the current reference current is obtained. Based on the deviation threshold and the current reference current, the deviation threshold, the reference current, and the current threshold are updated and stored in the non-volatile Flash memory. This allows the contact electrode sensor to be stably used in air conditioning condensate water environments.

The invention relates to a method for determining the fill level value of contents (120) in a container (100), having the steps of: providing at least one characteristic feature of the contents (120); and providing a content quantity distance curve (202, 204, 206, 208) for the container (100) and the at least one characteristic feature of the contents (120); determining the fill distance between a contents detector (130) and the surface of the contents (122, 124); and determining the fill level value of the contents (120) in the container (100) on the basis of the content quantity distance curve (202, 204, 206, 208) and the fill distance.

The application discloses a liquid level height automatic calculation method and system based on spectral characteristics, a medium and equipment, and particularly relates to the technical field of container liquid level automatic calculation and dynamic monitoring. The method improves the algorithm through spectral curve change point detection, accurately captures the spectral feature difference between gas phase and liquid phase through spectral sequence modeling, introduces the running length index and dynamic updating mechanism, filters out the real gas-liquid interface change point through the multiple check mechanism to filter the false change point, infers the type according to the mean difference before and after the change point and the running length change, takes the clear mutation point or the midpoint of the gradual transition zone as the interface, combines the pixel resolution and the bottom starting position, and obtains the actual liquid level height through formula calculation, establishes the conversion relationship between the pixel quantity and the actual liquid level height through the proportional relationship between the image axis pixel number and the absolute height of the container, and finally takes the average value of the calculation results of three wave bands as the absolute height of the liquid level based on the pixel number of the spectral curve feature point.

Method for detecting the state of filling of a tank comprising an electrical conductor arranged in or on the wall of the tank in a winding of turns, the method comprising the steps of, at a current instant: Injecting (701) a signal at a first end of the electrical conductor, Measuring (702) the signal after its propagation in the electrical conductor, Analyzing (703) the measurement of the signal to identify a peak of amplitude characteristic of a reflection or transmission of the signal on a second end of the electrical conductor opposite to the first end, measuring the time of flight associated with said peak, Comparing (704) the time of flight measured at the current instant to a time of flight measured on the same peak of amplitude for a measurement made at an earlier instant, Characterizing (705) the state of filling of the tank from the comparison of the times of flight.

An anode foil specific volume detection device comprises a lifting module, a foil clamping assembly and a connecting assembly, and the foil clamping assembly is connected to the lifting module through the connecting assembly; a liquid storage tank is arranged below the foil clamp assembly, and a capacitive liquid level sensor is arranged on one side of the foil clamp assembly and above the liquid storage tank; the capacitive liquid level sensor and the lifting module are both connected with the PLC. According to the utility model, through the lifting module and the capacitive liquid level sensor, the depth of the anode foil extending into the detection liquid is consistent during each detection of the anode foil, so that the detection error is reduced; meanwhile, the detection device can detect a plurality of anode foils at the same time, and the detection efficiency is high.

The invention relates to an inspection shaft (1) for a green roof structure (2) with a water-bearing layer (20), comprising a side wall (10) which delimits an interior space (11) of the inspection shaft (1) which is at least partially unlimited downwards, a holder (12) arranged in the interior space (11) for a water level sensor (3), and an adaptation device (13) which is designed to position the holder (12) such that the water level sensor (3) can be fastened in a position optimized for measuring the water level in the water-bearing layer (20). The invention further relates to a roof structure (2) with a water-bearing layer (20) and at least one inspection shaft (1) in which a water level sensor (3) for measuring the water level in the water-bearing layer (20) is arranged.

A liquid level sensor can include a circuit board and a thermistor bridge supported by the circuit board comprising a first pair of thermistors and a second pair of thermistors. A heat sink can be coupled to the circuit board proximate the first pair of thermistors and not the second pair of thermistors. A power supply can be configured to provide pulses of electrical current through the thermistor bridge. A controller in communication with the thermistor bridge can be configured to receive a measurement signal from the thermistor bridge output a low product indication when the measurement signal satisfies a predetermined condition.

The embodiment of the application discloses a liquid level detection device, a liquid level detection system and a liquid level detection method, and belongs to the technical field of data detection. The liquid level detection device comprises an outer cavity, an inner cavity, a control device and a plurality of electromagnetic coils, the inner cavity comprises a liquid inlet arranged on one side; the plurality of electromagnetic coils are sequentially arranged between the outer cavity and the inner cavity; the liquid inlet is used for immersing the liquid at a target site into the inner cavity, so that the current of at least one electromagnetic coil changes; the control device is used for determining the current liquid level of the target site according to the current state of each electromagnetic coil. In the process of determining the liquid level through the current change of the electromagnetic coil, the liquid only immerses into the inner cavity and does not immerse into the outer cavity. By avoiding the influence of foreign matters in the liquid on the obtained liquid level value, a more accurate liquid level can be obtained. At the same time, since the contact between the liquid and the electromagnetic coil is avoided, the durability of the device is further improved.

A level sensing system including a level sensor disposed in a first and second medium. The level sensor includes: a spring-mass system disposed within a sensor housing, the spring-mass system comprising a magnetic mass and a spring that couples the magnetic mass to the sensor housing; an electrical conductor configured to generate an oscillating magnetic field for driving oscillating motion of the magnetic mass; and a sensor configured to sense a back electromotive force in the electrical conductor caused by the oscillating motion of the magnetic mass. The level sensing system comprises a processor configured to: determine a frequency based on the sensed back electromotive force or the oscillating motion of the magnetic mass; determine whether the frequency is greater or less than a threshold value; determine whether the level sensor is or is not disposed partly or wholly in the first and / or second medium.

The invention relates to a vibration sensor. The invention consists in the fact that the vibration sensor has a reaction component (4) which is mechanically coupled to a mechanically vibrating unit (1). It has an outer surface (40) which has a lower corrosion resistance and / or a higher porosity than an outer surface (10) of the mechanically vibrating unit (1).

An automatic analyzer is provided which is capable of detecting contact of a distal end of a probe with a liquid level even if capacitance between the container and the probe is excessively increased. The automatic analyzer for analyzing a sample includes: a container that contains liquid; a probe that aspirates the liquid; a capacitance measuring unit that outputs a voltage according to capacitance between the container and the probe; a determining unit that determines, based on the voltage output from the capacitance measuring unit, whether or not a distal end of the probe contacts the liquid; and a capacitor that is installed between the capacitance measuring unit and either the probe or the container.