690results about "Thermometers using electric/magnetic elements" patented technology

A temperature control device includes a temperature detector, a difference operation unit, a controller, a saturation processing circuit unit, a rewritable storage unit, and a conversion unit. The difference operation unit operates a digital value corresponding to a difference value between a detected temperature value and a target temperature. The controller calculates a manipulated variable using the digital value operated by the difference operation unit. The saturation processing circuit unit includes a digital circuit to limit an output value of the controller to a pre-set upper limit value. The rewritable storage unit stores the upper limit value read from a storage area of the rewritable storage unit and input into the saturation processing circuit unit. The conversion unit converts the output value of the saturation processing circuit unit into an analog signal to output the converted value as a control command value to the heater.

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.

This application relates to the field of thermistor materials technology, specifically disclosing a high resistivity, low B-value thermistor material, a chip resistor, and a method for preparing the same. The high resistivity, low B-value thermistor material provided in this application comprises a base material and 2-10% by weight of additives; the base material comprises Mn3O4, Co3O4, SrO, ZnO, and TiO2 in a weight ratio of (10-40):(5-15):(20-60):(5-10):(1-15); the additives comprise CaO, Fe2O3, and SiC in a weight ratio of (5-20):(10-50):(9-35); this application also provides a chip resistor made using the above-mentioned thermistor material. The chip resistor obtained in this application has high resistivity and a low B-value, which can meet the requirements for use in negative temperature coefficient thermistors.

This invention provides a method, apparatus, device, and medium for determining the rotor temperature of an asynchronous motor, thereby improving the accuracy of determining the real-time rotor temperature. The method includes: determining the real-time slip angular velocity; wherein the slip angular velocity is the difference between the stator angular velocity and the rotor angular velocity; determining the real-time rotor resistance based on the slip angular velocity and the q-axis rotor voltage equation; and determining the real-time rotor temperature based on the real-time rotor resistance and a preset formula; wherein the preset formula corresponds to the temperature change characteristics of the rotor resistance.

A power supply apparatus (100) comprises an inverter (110), voltage and current measuring devices (120a, 120b), a temperature sensor (130), and an operation circuit (140). The inverter (110) comprises change-over switches (SW1-SW6). The voltage and current measuring devices (120a, 120b) are configured to measure the voltage (V1) and the current (I1) on the change-over switches (SW1-SW6). The temperature sensor (130) is configured to measure an initial temperature (T[0]) in an initial state. The operation circuit (140) is coupled to the voltage and current measuring devices (120a, 120b) and the temperature sensor (130). The operation circuit (140) is configured to: execute a power model (142), and calculate a first transient power of the change-over switches (SW1-SW6) on the basis of the initial temperature (T[0]), the voltage (V1), and the current (I1); and execute a thermal model (144), and calculate a first transient ideal temperature of the change-over switches (SW1-SW6) on basis of the first transient power. The power supply apparatus (100) calculates, in real time, the transient temperature of channel interfaces of the change-over switches (SW1-SW6) by measuring the voltage (V1) and the current (I1) on the change-over switches (SW1-SW6) of the inverter (110). The present invention also relates to a temperature measurement method (500) for a power supply apparatus, and an electrical system (ES1).

The application belongs to the technical field of thermal field measurement under high temperature environment, and particularly relates to a high-temperature thermal field direct measurement sensor array. In use, thermal radiation is irradiated on a heat-absorbing layer, the heat-absorbing layer absorbs the thermal radiation and transmits the heat to a high-conductivity micro region, so that a transverse thermoelectric voltage is generated between a first electrode and a second electrode, and the heat flux density at the high-conductivity micro region is calculated according to the transverse thermoelectric voltage; the temperature at the high-conductivity micro region is calculated according to the resistance between a third electrode and a fourth electrode, the heat flux density at the high-conductivity micro region is calibrated through the temperature at the high-conductivity micro region, and the spatial distribution characteristics of the heat flux are inversed by comprehensively considering the heat flux and the temperature at multiple high-conductivity micro regions. The high-temperature thermal field direct measurement sensor array can output the spatial distribution of two modes of heat flux density and temperature, and realize high-precision spatial distribution measurement of the thermal field.

A fluidization measurement system for a gas phase reactor containing a fluidized bed includes a measurement probe coupled to a sidewall of the gas phase reactor. The measurement probe includes a support bar penetrating the sidewall and extending into the fluidized bed to a distance of at least 12% of a diameter of the gas phase reactor, and a plurality of sensors arranged along a length of the support bar to obtain measurements of at least one of temperature, pressure, and electrostatic charge at multiple points within the fluidized bed. A base plant control system is in communication with measurement probe to receive and process the measurements to determine real-time physical conditions and flow patterns of the fluidized bed.

The invention relates to a food thermometer (1), wherein the food thermometer (1) comprises an electrical resistance thermometer with electrical conductors (6) and there are at least three measuring points (7), preferably at least six measuring points (7), for the electrical conductors (6). The invention also relates to a system comprising a food thermometer (1) and a kitchen appliance, wherein the food thermometer (1) and the kitchen appliance are configured such that the kitchen appliance can read the temperature determined by the food thermometer (1) and control the preparation of the food in accordance with the read temperature. The invention also relates to a method for preparing food using a food thermometer (1), wherein the temperature of the food is determined in a spatially resolved manner by the food thermometer (1) and the preparation of the food is controlled in accordance with the determined temperature.

This invention relates to the field of sensing elements, and in particular to an exhaust temperature sensor and its assembly method. The exhaust temperature sensor includes: a cover; a first sleeve, one end of which is fastened and fixedly connected to the cover; a temperature-sensing element disposed within the first sleeve; a mineral-insulated cable connected to the temperature-sensing element, with at least a portion of the mineral-insulated cable extending into the first sleeve; a sheath, which is crimped to the end of the mineral-insulated cable away from the sleeve; a first fixing module connected to the sheath; and a wire, one end of which is inserted into the sheath and connected to the mineral-insulated cable via a second fixing module. This invention offers advantages such as resistance to high temperatures up to 1000℃, protection of the temperature-sensing element, maintenance or guarantee of signal stability, excellent thermal conductivity, and reliable connection.

The present disclosure relates to an electronic device. The electronic device comprises a circuit board having a power input end and an electric device, the electric device being electrically connected to the power input end; a power supply component electrically connected to the power input end and configured to supply power to the electric device of the circuit board; a switch component arranged on a connection line between the power supply component and the power input end; and a temperature detection resistor arranged on the circuit board and located on the connection line between the power input end and the electric device; wherein the switch component is configured to disconnect the electrical connection between the power supply component and the power input end when a temperature rise parameter of the temperature detection resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold. The present disclosure can cut off the power supply to the circuit board when the temperature rise parameter of the temperature detection resistor is greater than the preset temperature rise threshold, thereby protecting the use of the circuit board and the electronic device.

This invention relates to an apparatus and method for slow tensile and creep testing in a supercritical carbon dioxide environment. The apparatus includes a supercritical carbon dioxide pipeline system, a condenser, a high-pressure pump, a high-temperature autoclave, a slow tensile / creep testing machine, a loading shaft, fixtures, slow tensile / creep specimens, a preheater, a heater, and the pipeline system. Carbon dioxide is supplied from a high-pressure gas cylinder, condensed and liquefied in the condenser, and then enters the high-pressure pump. The high-pressure pump pressurizes the carbon dioxide to the target pressure, and then it flows into the preheater for initial heating. After flowing out of the preheater, the carbon dioxide enters the high-temperature autoclave, where it is further heated to a set temperature by a heater on the outer wall of the autoclave. Four samples can be tested simultaneously in the high-temperature autoclave. The apparatus allows for precise control of test parameters such as the pressure and temperature of the supercritical carbon dioxide in the pipeline and within the autoclave, the slow tensile strain rate, and the creep load. It can simultaneously evaluate the slow tensile and creep behavior of four samples in a supercritical carbon dioxide environment.

A printable paste for producing an electrical component, including a printable, non-conductive coating, electrically conductive particles and ceramic NTC particles, wherein the electrically conductive particles and the ceramic NTC particles are homogeneously distributed in the printable, non-conductive coating. There is also provided a method for producing a printable paste, a thin film including the printable paste, a method for producing the thin film, and a temperature sensor and an inrush current limiter including the thin film having the printable paste.

The invention relates to a system (30) having at least one heating element (8, 12, 36, 38, 40, 52) and having at least one thermocouple (10, 54), wherein the at least one heating element (8, 12, 36, 38, 40, 52) is designed to heat a fluid (4, 32) that flows through past the at least one heating element (8, 12, 36, 38, 40, 52), the system being characterized in that the at least one thermocouple (10, 54) is electrically conductively connected to the at least one heating element (8, 12, 36, 38, 40, 52). Also described are a device (2) for heating a fluid (4, 32) and a use of a thermocouple (10, 54) for monitoring the temperature of a heating element (8, 12, 36, 38, 40, 52).

The application provides a temperature monitoring system and a method thereof. The temperature monitoring system comprises a sensing layer and an edge server. A switchable resistance network is arranged in a collection terminal, and a switch component is used to selectively connect the sensor and the resistance network. A master control unit can automatically identify the temperature sensor model and the wiring mode based on the on-off state of the switch, thereby realizing adaptive collection of different models of sensors and reducing measurement errors caused by mismatched sensor types. Meanwhile, the edge server performs local time sequence trend analysis on the temperature detection data and generates early warning information when an anomaly is identified, thereby maintaining the continuity of monitoring and warning in the event of external network interruption, realizing on-demand cloud uploading through a determined cloud uploading strategy, reducing bandwidth occupation, lowering operating costs, improving the security of sensitive data in the local area network, reducing dependence on the cloud, and improving reliability and operability in complex fields.

The invention relates to a sensor for measuring a parameter of a motor vehicle, comprising an elongate body (10) comprising at least one side (110) extending between distal ends (120D) having a convex shape protruding from said at least one side (110), the body (10) comprises, along the at least one side (110), at least one fluid discharge channel (130) extending from the distal end (120D) to the proximal end (120P), the sensor (1) further comprising a piezoelectric element (20) and a measuring element (30).

The application discloses a temperature-strain dual-function sensor for extracorporeal circulation system monitoring, and relates to the technical field of flexible electronics and biomedical engineering. The sensor adopts a three-layer stacking structure, and comprises, from top to bottom, a piezoresistive strain response layer based on a silver / graphene / poly(3,4-ethylenedioxythiophene):polystyrene sulfonate composite conductive film, a thermoplastic polyurethane nanofiber heat insulation isolation layer and a temperature sensitive layer based on a graphene / poly(3,4-ethylenedioxythiophene):polystyrene sulfonate composite conductive hydrogel. The temperature-strain dual-function sensor for extracorporeal circulation system monitoring prepared by the application exhibits high sensitivity and fast response characteristics in temperature and strain sensing, and simultaneously exhibits excellent cycle stability and long-term reliability under repeated deformation.

A power semiconductor circuit and a method for protecting this power semiconductor circuit are presented, arranged on a liquid cooling device during normal operation of the power semiconductor circuit, wherein the power semiconductor circuit has a temperature sensor, wherein the signals of this single temperature sensor are evaluated permanently or cyclically by a control circuit and are thus available as a temperature value, wherein after exceeding a first, lower temperature setpoint, the time change of the temperature value is determined by the control circuit, and if a change threshold value of the time change is exceeded, caused by a functional change of the liquid cooling device, in particular its malfunction, as a special case its failure, a fault procedure is initiated.

The present application relates to the technical field of graphitization furnace temperature monitoring, and particularly relates to a graphitization furnace working temperature measuring device and a measuring method. The method comprises: obtaining furnace core thermocouple data, gas inlet pressure and gas mass flow rate of a protection tube during the working process of the graphitization furnace; obtaining viscosity correction flow resistance at each moment according to the thermocouple data, gas inlet pressure and gas mass flow rate at each moment; if the gas inlet pressure in a local period at a moment satisfies the pressure steady state condition and the thermocouple data satisfies the temperature reference interval, then obtaining flow resistance instantaneous fluctuation value according to the difference between the viscosity correction flow resistance at each moment in the period in which the corresponding moment is located and the overall distribution; obtaining a crack jet characteristic index by combining the flow resistance instantaneous fluctuation value and the gas inlet pressure, and then taking corresponding response actions. The present application provides reliable protection for the integrity of the thermocouple protection tube of the core temperature measuring element of the graphitization furnace, and improves the intelligent level and operation safety of the graphitization production process.

A temperature measuring apparatus for measuring a temperature of a battery pack is provided. A first resistor is connected between a first power supply and a first node, and a second resistor is connected between a second node and a second power supply. A temperature-variable resistive element whose resistance is varied depending on a temperature is connected to between the first node and the second node. A processor measures the temperature of the battery pack based on at least one of a first temperature measured based on a voltage of the first node and a second temperature measured based on a voltage of the second node.

This application discloses a urine monitoring device capable of measuring physiological parameters from a user's urine to evaluate specific cardiac or cardiovascular or other metabolic risks or other disease risks or a user's response to specific medications. The device is portable, can be operated by hand, or can be installed inside a toilet or attached to a urinal. The device can authenticate a user, and upon authentication of a verified user, the data collected from the user's urine can be automatically transferred to the user's personal electronic device, such as a smartwatch or mobile phone, or to the user's other data accounts via the internet or cellular communication, using a secure data transfer protocol, for further data processing, user viewing, or review by the user's physician and care team. The device can also be used in conjunction with a urinary catheter and urine collection bag, similar to those used in hospitals to collect urine from hospitalized patients for continuous monitoring of important urinary parameters, patient responses to specific medications, and the patient's overall health during hospitalization.

This application provides a sensor assembly, including a housing, a circuit board unit, a base, and a temperature sensing element. The sensor assembly has an inner cavity and a channel. The base is at least partially housed in the inner cavity and includes a first wall portion having a first surface and a second surface. The circuit board unit is located on the side of the first surface. The temperature sensing element includes a temperature-sensing portion and a conductive portion. The channel and the temperature-sensing portion are located on the side of the second surface. The base also includes a receiving portion and an insulating portion. At least a portion of the conductive portion and at least a portion of the insulating portion are both housed in the receiving portion. The insulating portion is located between the peripheral wall of the base forming the receiving portion and the conductive portion. The at least a portion of the conductive portion housed in the receiving portion and the peripheral wall of the base forming the receiving portion are respectively sealed to the insulating portion. The conductive portion is electrically connected to the temperature-sensing portion and the circuit board unit. The sensor assembly provided by this application has good sealing performance.

This invention relates to the field of hydrogen content detection technology in copper melts, and particularly to a method for detecting hydrogen content in copper melts based on ultrasonic dehydrogenation. The method includes: simultaneously acquiring acoustic response signals and spatial temperature distribution signals of the copper melt; extracting acoustic feature parameters related to hydrogen content based on the acoustic response signals, and dividing the melt space into multiple response regions based on the spatial temperature distribution signals; inputting the acoustic feature parameters and spatial information of the response regions into a pre-constructed mapping model to obtain the spatiotemporal distribution information of hydrogen content; extracting temporal evolution features and spatial change features based on the spatiotemporal distribution information; adjusting the acquisition parameters of the acoustic response signals and the sampling weights of each response region according to the temporal evolution features and spatial change features, and performing signal acquisition and updating of the spatiotemporal distribution information of hydrogen content in the next cycle. This invention enables dynamic and accurate detection of hydrogen content in copper melts, adapting to the spatiotemporal dynamic changes of hydrogen content during the dehydrogenation process.

This application discloses a sensor assembly, including an insulating substrate comprising a first surface and a second surface disposed opposite to each other; a surface acoustic wave (SAW) pressure sensor disposed on the first surface, the SAW pressure sensor comprising a piezoelectric lithium niobate layer and two pairs of interdigital transducers disposed on the surface of the piezoelectric lithium niobate layer, the piezoelectric lithium niobate layer having a cavity and a corresponding thinned sensitive membrane region, the two pairs of interdigital transducers being disposed around the thinned sensitive membrane region in mutually perpendicular directions; and a platinum resistance temperature sensor and an interdigital capacitance humidity sensor disposed on the second surface. By having the SAW pressure sensor, platinum resistance temperature sensor, and interdigital capacitance humidity sensor disposed opposite to each other on the insulating substrate, combined with the cavity formed on the piezoelectric lithium niobate layer, and the two pairs of interdigital transducers disposed in mutually perpendicular directions, the detection accuracy is improved and crosstalk is reduced.

Electrode devices are provided having certain thin film components, including at least one thin film contact and a temperature sensor associated with the contact. The temperature sensor can be used to monitor the temperature during use of the electrode device, including during electrical stimulation or ablation. Further, the temperature sensor can be used to identify the most effective temperature for stimulation or ablation.

Described herein are apparatuses, systems, and methods for providing a surface mount thermistor based point heat detector. One circuit board for a point heat detector of a fire sensing system includes a circuit board body having a plurality of corners, at least one hole disposed in the circuit board body proximate one of the corners, and a surface mount thermistor mounted on the at least one corner.

A wafer-like sensor includes at least one temperature sensor configured to obtain a temperature within the high temperature environment, a support substrate, a temperature circuit component arranged on the support substrate, an electrical interface arranged on the support substrate, at least one power interconnect arranged on the support substrate, at least one data interconnect arranged on the support substrate, and at least one sensor interconnect arranged on the support substrate. A process of implementing the wafer-like sensor is also disclosed.

This invention aims to improve the time response of temperature measurement and to realize a multi-point thermocouple that eliminates temperature variations due to the position of the contacts when measuring the temperature inside a device where heat flow is unidirectional. [Solution] A multipoint thermocouple 1 having multiple temperature-measuring contacts 4, wherein the contact point between the metal of the first electrode 11 and the metal of the second electrode 12 is the temperature-measuring contact 4 of the thermocouple, and the cylindrical outer cylinder 2 forms the first electrode 11, and the outer cylinder 2 has two or more wires (second electrode wires 3) forming the second electrode 12 inside the outer cylinder 2, all of the second electrode wires 3 are in contact with the inner surface of the outer cylinder 2 to form the temperature-measuring contacts 4, all of the temperature-measuring contacts 4 are arranged in the same direction in the circumferential direction 15 of the outer cylinder 2, the first electrode 11 and the second electrode 12 are insulated from each other except for the temperature-measuring contacts 4, and furthermore the second electrode wires 3 are insulated from each other.