110results about "Cryogenic temperature measurement" patented technology

The invention relates to the technical field of laboratory equipment, in particular to an incubator heating and cooling temperature detection system and method.The incubator heating and cooling temperature detection system comprises a temperature detection module, a temperature setting module, a temperature calculation module and a temperature control module; threshold data of the test box can be set through the temperature setting module, the temperature calculation module calculates the temperature data based on the threshold data to obtain calculation data, and the temperature control module controls the temperature of the test box based on the calculation data. According to the method, the temperature of the test box can be effectively detected and controlled through the arrangement of the temperature detection module, the temperature setting module, the temperature calculation module and the temperature control module, so that the problem that the temperature of an existing test box cannot be pre-adjusted is solved.

Disclosed are systems and methods for detecting phase state information of objects in a facility. An apparatus can include a case with sensors. The sensors can detect environmental conditions related to an object and generate signals based on the detected conditions. The sensors can include temperature sensors, acoustic sensors, ultrasonic transducers, and / or humidity sensors. The apparatus can include a wireless transceiver to transmit the signals to a computer system. The computer system can process the signals using machine learning models to determine temperature and / or phase state information of the object, such as food products that are retained in / by the object. The apparatus can be removably affixed to the object. Sometimes, the apparatus can be positioned amongst many objects, such as multiple item cases on a pallet to determine an overall temperature and / or phase of the items on the pallet. The temperature / phase information can be used to optimize facility cooling operations.

Diamond sensors for temperature and radiation measurement and helmet for real-time temperature and radiation detection The disclosure relates to a manufacturing process of temperature sensors with detection properties through thermal conduction and electromagnetic radiation. These temperature sensors are NTC (negative temperature coefficient) thermistors that are based on diamond films on flat semiconductor and ceramic substrates. These sensors comprise a diamond surface that is sensitive to temperature and radiation, on one of the substrate surfaces, whether or not protected by a non-temperature-sensitive diamond surface and metal carbide ohmic contacts on the other surface of the substrate. The disclosure also relates to personal protective equipment (PPE) comprising the temperature and infrared radiation detection system for integration into helmets with sensors with high durability and small size, aimed at preventing injuries to professionals from exposure to extreme conditions. The sensors comprising this detection system consist of a layer of polycrystalline boron-doped diamond overlaid by a layer of non-boron-doped polycrystalline diamond.

A Meissner-Effect Transition-Edge-Sensor (ME-TES) microcalorimeter device may have one or more microcalorimeter elements, each including an absorber body composed of a superconductive element that is arranged to absorb incoming photons or radiative particles. A planar pickup coil substantially surrounds the absorber body and is located within a magnetic sensing distance of the absorber body. Absorption of incoming photons or radiative particles increases the temperature of the superconductive element, resulting in a change in magnetic flux through the superconductive element. This change in magnetic flux induces a transient electric current in the planar pickup coil that may be sensed using a readout circuit. A method is provided for fabricating an ME-TES microcalorimeter device.

The technical scheme of the invention provides a data acquisition redundant circuit of a single-bus digital temperature sensor in one aspect, and the data acquisition redundant circuit is characterized by comprising M identical temperature sensor data acquisition modules. According to the other technical scheme, the invention discloses a data acquisition device of the single-bus digital temperature sensor, which is characterized by comprising J data acquisition modules realized based on the data acquisition redundant circuit of the single-bus digital temperature sensor, two high-performance 32-bit ARM processors and a signal isolation circuit. According to the invention, through simple data transmission control of the serial-to-parallel shift register and the parallel-to-serial shift register, the microcontroller MCU pre-stores data / commands from the inside to the outside. Meanwhile, a data transmission control object is converted, a unified program execution process is simplified, the reliability of data acquisition and communication is improved, and meanwhile it is guaranteed that the data transmission time sequence of the sensor buses of multiple channels is always synchronous and consistent.

An attenuator or dissipating element arranged to thermalize radio frequency or lower frequency signals, respectively, comprises: at least a first heat sink and a second heat sink (230, 231, 232, 233) that are capacitively grounded and arranged to provide heat dissipation via electron-phonon coupling; and at least one tunnel junction (220, 221, 222, 223, 224) coupled to the first heat sink and the second heat sink; wherein a combined resistance of the at least one tunnel junction and a heat sink coupled to it is below h / e 2; and / or a total capacitance of the first heat sink and the second heat sink, respectively, is above e 2 / 2 k b T, wherein h is the Planck constant, e is the elementary charge, k b is the Boltzmann constant, and T is the minimum operating temperature of the element. Preferably, an array (200) of N rows (204) and M columns (202) of non-superconducting metal-insulator-metal tunnel junctions is employed.

The application discloses a sealing degree detection device and detection method of a refrigerated display cabinet, and mechanical touch door switch detects the opening and closing conditions of the refrigerated cabinet door body; when the mechanical touch door switch cannot detect the closing signal of the refrigerated cabinet door body, a signal is sent to the controller, the controller sends a signal to the cloud platform, and it is determined that the door body is sunken or the cabinet is deformed; after the mechanical touch door switch detects that the refrigerated cabinet door body is closed, the temperature and air pressure in the cabinet are determined through the temperature sensor and the air pressure sensor in the cabinet; if the temperature and air pressure determination results both meet the set requirements, the refrigerated display cabinet is normal; if any determination result does not meet the set requirements, the controller sends a signal to the cloud platform, and it is determined that the sealing strip of the refrigerated cabinet door body does not meet the use requirements. The application can determine whether the sealing degree of the door body meets the expected requirements, and the warning is transmitted to the relevant after-sales department through the cloud platform for the refrigerated display cabinet that does not meet the requirements, thereby playing a preliminary discrimination role for after-sales, and improving the after-sales service quality.

1. A method for determining the temperature of a product being transported on a conveyor belt in a cold tunnel, comprising the steps of: - continuously measuring the surface temperature of the product moving on the conveyor belt; - measuring the thickness of the product at the point where the temperature measurement is taken; - performing the following evaluation: a. when the thickness of the product is within a certain range, the temperature measured for said product is considered to be a reliable value; b. when the thickness of the product is outside the range, the last temperature value measured for the product is considered to be a reliable value in accordance with paragraph a) above; and c. after a determined period of time during which the measured thickness is outside the range, it is concluded that there is no product on the conveyor belt and the temperature measurement is no longer taken into account.

The invention relates to an installation for measuring a temperature of an external wall of a pipeline, the device comprising: a pipeline configured to allow the circulation of a fluid; a device for converting heat into thermoelectricity, configured to generate a potential difference when there is a temperature difference between an external wall of the pipeline and the ambient air; an electronic circuit electrically connected to the device for converting heat into thermoelectricity, being configured to extract electrical energy from the potential difference and being configured to measure the temperature of the external wall of the pipeline.

A system for recalibrating a temperature reading of a Dewar flask includes a vapor plug and an electronic device. The vapor plug includes a vapor plug cap, a neck extending from the vapor plug cap, and a sensor located on the neck. The neck is configured to be inserted into an opening of a Dewar flask. The sensor is configured to detect at least one parameter associated with the Dewar flask. The electronic device is in communication with the sensor and is configured to receive, recalibrate, and transmit at least one parameter from the sensor.

A high temperature superconductor (HTS) cable includes at least one HTS tape stack extending along a length of the HTS cable and at least one optical fiber extending along the HTS cable, the at least one optical fiber having a plurality of gratings spaced apart from one another along a length of the HTS cable for detecting quenches of the at least one HTS tape stack.

The application relates to a temperature recording device for a cold chain and a temperature recording method thereof. The temperature recording device can be applied to the temperature recording of the fields of food, medicines and the like which need to be kept at low temperature for production, storage and transportation. The temperature recording device comprises a base, a transparent cover, a spiral bimetallic sheet, a central shaft, a shaft sleeve, a temperature pointer, a scale dial and a rotating dial. A one-way hook is arranged on the temperature pointer, a recording arrow and a clamping groove are arranged on the rotating dial, the central shaft is fixed in the center of the base, the shaft sleeve is sleeved on the central shaft and can rotate, the outer end of the spiral bimetallic sheet is connected to the inner wall of the base, the inner end of the spiral bimetallic sheet is connected to the shaft sleeve, the spiral bimetallic sheet is stretched and bent to drive the shaft sleeve to rotate when the temperature changes, the rotating dial is covered above the scale dial and can rotate, the shaft sleeve penetrates through the scale dial and the rotating dial, the lower end of the shaft sleeve is connected to the spiral bimetallic sheet, the upper end of the shaft sleeve is connected to the temperature pointer, the shaft sleeve drives the temperature pointer to rotate, and the transparent cover is covered on the upper portion of the base.

The invention discloses a gas phase liquid nitrogen biological container temperature distribution and liquid level calibration method and device, and relates to the field of equipment calibration, the gas phase liquid nitrogen biological container comprises a gas phase liquid nitrogen biological container main body, the top end of the gas phase liquid nitrogen biological container main body is provided with a detection cover, and the top end of the detection cover is provided with a heat preservation pad. The temperature sensors, the sensor host and the positioning pipe are arranged, the temperature sensors with different depths are inserted into the detection cover of the gas-phase liquid nitrogen biological container main body, on-site temperature distribution and liquid level calibration can be carried out, the temperature distribution in the gas-phase storage area of the gas-phase liquid nitrogen biological container main body is obtained through software system analysis, and the accuracy of the gas-phase liquid nitrogen biological container main body is improved. Through combination with the device and a pre-cooling method, temperature distribution and liquid level calibration of the gas-phase liquid nitrogen biological container main body are carried out in situ under the vacuum working condition, and the problems that a large amount of liquid nitrogen is evaporated, the temperature fluctuation is large, and the temperature stability is difficult to recover due to the fact that a heat source with the huge temperature difference is introduced into the gas-phase liquid nitrogen biological container main body are solved.

A system for recalibrating a temperature reading of a dewar includes a vapor plug and an electronic device. The vapor plug includes a vapor plug cover, a neck extending from the vapor plug cover, and a sensor positioned on the neck. The neck is configured to be inserted into an opening of the dewar. The sensor is configured to detect at least one parameter associated with the dewar. The electronic device is in communication with the sensor, and is configured to receive, recalibrate, and transmit the at least one parameter from the sensor.

A system for improving an electrical conductivity and reducing an electrical energy loss in an electrical component, the system includes a temperature sensor, insulation for enclosing the electrical component and the temperature sensor, a cooling source to be coupled to the electrical component through the insulation, and a computer connected to the cooling source and the temperature sensor, where the computer is configured to control the cooling source to cool the electrical component to a user-definable temperature as indicated by the temperature sensor and maintain the electrical component at the user-definable temperature for a user-definable period of time.

The broadband light source includes a confocal sensor assembly configured to measure a surface of a rotatable drum covered with a plasma formation target material. The broadband light source includes a laser source configured to direct pulsed illumination at the rotatable drum to excite the plasma formation target material and emit broadband light as the drum is angularly rotated and axially translated. The broadband light source includes a controller configured to direct the confocal sensor assembly to transmit a confocal light signal to the rotatable drum, record a calibrated measurement of the distance from the confocal sensor assembly to the rotatable drum, direct a cryogenic cooling subsystem to cryogenically cool the rotatable drum, record one or more distance measurements from the sensor head to the rotatable drum, convert the distance measurements to temperature values, and determine whether a target process condition temperature has been achieved.

According to an aspect, there is provided a Coulomb blockade thermometer comprising an input electrode; an output electrode; and a sensor component coupled in-between the input and output electrodes. The sensor component comprises: an array of tunnel junctions comprising at least one row of tunnel junctions, a first heat sink and a second heat sink. The tunnel junctions of the array comprise an insulating layer forming a tunnel barrier between two electrically conducting volumes which are characterized by an absence of superconductivity. The absence of superconductivity in the two electrically conducting volumes is achieved by using titanium tungsten layers or scandium layers. The at least one row comprises a first tunnel junction, a second tunnel junction and a third tunnel junction. The first heat sink is coupled to the first and second tunnel junctions. The second heat sink is coupled to the second and third tunnel junctions. The first heat sink and the second heat sink are arranged to provide heat dissipation via electron-phonon coupling.

A virtual thermocouple system for non-invasively predicting product characteristics is disclosed, which includes one or more temperature sensing systems including a resistive network which includes a temperature sensing device comprising a plurality of negative temperature coefficient (NTC) thermistors, and a load resistor, a corresponding system-on-chip coupled to a corresponding resistive network and configured to i) power the corresponding resistive network, ii) receive corresponding signals from each NTC thermistor of the corresponding temperature sensing device, iii) process the signal associated with each NTC thermistor of the corresponding temperature sensing device and thus generate data associated with each NTC thermistor, and iv) transmitting the processed data, a power generating device configured to provide power to the corresponding system-on-chip, and a base stations adapted to i) receive the processed data from a corresponding system-on-chip, and ii) using a predefined model, and non-invasively translate the processed data to thermal characteristics of a product.

The invention relates to an installation for measuring the temperature of an external wall of a pipe, the device comprising: a pipe configured to allow the circulation of a fluid; a heat-to-thermoelectricity conversion device, configured to generate a potential difference when there is a temperature difference between an external wall of the pipe and the ambient air; an electronic circuit electrically connected to the heat-to-thermoelectricity conversion device, being configured to extract electrical energy from the potential difference and being configured to measure the temperature of the external wall of the pipe.

The invention discloses a sensor system capable of improving sampling precision and a refrigerator, the sensor system capable of improving the sampling precision comprises a plurality of sensors capable of jointly collecting the same to-be-measured parameter, the sampling precision of all the sensors is the same, and the sampling ranges of all the sensors are different from one another. The sampling range of at least one sensor is within the sampling range of the other sensor, and the sensor system is matched with the range of to-be-measured parameters to select the sensor with the corresponding sampling range for acquisition. Compared with the prior art, on the basis that the sampling cost is not increased, the sampling precision can be improved, and the technical problem caused by too large sampling errors is avoided.

There is provided a superconducting magnet device including a superconducting coil, a vacuum vessel that accommodates the superconducting coil, a current lead that is connected to the superconducting coil and installed in the vacuum vessel, a power supply cable that is disposed outside the vacuum vessel and connected to the current lead, and a heating unit that is disposed apart from the current lead and heats the current lead via the power supply cable.

The present specification describes a cryogenic temperature sensor comprising: a sample of superconductor material; a current source configured to pass a current through the sample of superconductor material; and a voltage sensor configured to sense a voltage across the superconductor material sample. The temperature sensor further comprises a control unit configured to: control the current source to vary the current through the sample of superconductor material over time while the voltage sensor senses the voltage across the sample of superconductor material; detecting a change in the sensing voltage; and calculating the temperature of the superconductor material sample based on the detected current value at which the sensed voltage changes.

A process variable transmitter for sensing cryogenic temperatures in an industrial process includes a cryogenic temperature sensor configured to be thermally coupled to the industrial process. The cryogenic temperature sensor has a resistance that varies in response to a change in cryogenic temperature, and the industrial process is at the cryogenic temperature. A resistance measurement circuit is electrically coupled to the cryogenic temperature sensor and measures a sensor resistance within a resistance range and responsively provides a temperature dependent output based on the measured resistance. Transmitter output circuitry is coupled to the measurement circuitry to transmit information related to the cryogenic temperature to a remote location. The cryogenic temperature sensor includes a polysilicon sensor containing a dopant such that the cryogenic temperature sensor has a resistance that varies over a cryogenic temperature range that is within the sensor resistance range of the measurement circuit.

Method for determining the temperature of products transported on the conveyor belt of a cryogenic tunnel, comprising the following steps: —continuously measuring the surface temperature of products travelling on the conveyor belt; —measuring the thickness of a product at the point where the temperature measurement is taken; —performing the following evaluation: a. when the thickness of the product is within a certain range, then the temperature measured for said product is considered to be a reliable value; b. when the thickness of the product is outside the range, then the last temperature value of the measured product is considered to be a reliable value according to paragraph a) above; c. after a determined period of time during which the measured thickness is outside the range, it is concluded that there are no products on the conveyor belt and the temperature measurements are no longer taken into account.

A broadband light source includes a confocal sensor assembly configured to measure a surface of a rotatable drum coated with a plasma forming target. The broadband light source includes a laser source configured to direct pulsed illumination to the rotatable drum for exciting the plasma forming target and emitting broadband light as the rotatable drum rotates in an angular direction and translates in an axial direction. The broadband light source includes a controller configured to direct the confocal sensor assembly to transmit a confocal optical signal to the rotatable drum, to record a calibrated measurement of a distance from the confocal sensor assembly to the rotatable drum, to direct a cryocooling subsystem to cryocool the rotatable drum, and to record a calibrated measurement of a distance from the confocal sensor assembly to the rotatable drum. One or more distance measurements from a sensor head to the rotatable drum are recorded, the distance measurements are converted into temperature values, and whether a target process condition temperature is achieved is determined.

A current sensing noise thermometer comprising: a sensor resistor thermally coupled to a target to be measured; a superconducting coil; superconducting thermal breaks between respective ends of the sensor resistor and respective ends of the superconducting coil; and a superconducting flux sensor; wherein the sensor resistor, superconducting coil and superconducting thermal breaks form a loop inductively coupled to the superconducting flux sensor. There may be a noise filter between the sensor resistor and the superconducting coil.

The present invention discloses a temperature sensor 1 comprising a Fiber Bragg Grating 2, a first coating 3 comprising a polymeric or metallic material such as polyimide, a second coating 4, arranged externally to the first coating 3, comprising a polymeric material such as an epoxy adhesive and a cylindrical sheath 5 comprising a UV light-transparent heat-shrinkable tube 6 of high thermal coefficient at 20 K, as it is the case of polytetrafluoroethylene, arranged externally to the second coating 4, and wherein the cylindrical sheath 5 has suffered a thermal process so that it exerts a pressure or throttling in the radial direction on the outer surface of the second coating 4. This temperature sensor 1 is adapted to provide temperature measurements at cryogenic temperatures without loss of accuracy. Systems 7 including one or more temperature sensors 1 and manufacturing processes of the temperature sensors 1 are also disclosed.

A fiber-optic sensor including an optical fiber comprising a first Fiber Bragg Grating (FBG) arranged along a first part of the optical fiber; and a first element disposed on an outer surface of the optical fiber, the first element having a first coefficient of thermal expansion (CTE) different to a CTE of the optical fiber, and being configured to induce a change in strain across the FBG in response to a change in temperature of the fiber-optic sensor in the region of the first FBG, the first element bonded to the optical fiber at two first locations that are separated, along the optical fiber from one another by the first part and unbonded to the optical fiber along the first part.

The present invention relates to a temperature integrity sensor, or more accurately to a temperature continuity sensor of a product that needs to be maintained at a temperature below its degradation temperature, for example, the product is a refrigerated or frozen edible product; pharmaceutical products, such as vaccines or antibiotics; or a biomedical product, such as a sample of a bodily fluid or tissue, or organ. The sensor is based on the RFID technology, especially the passive RFID technology.

This application provides a temperature sampling control method, apparatus, device, and storage medium. The method is applied to a controller and includes: performing fault self-diagnosis on a first temperature sensor and a second temperature sensor respectively; if the fault self-diagnosis results of the first temperature sensor and the second temperature sensor are both fault-free, then performing a low-temperature range sensor rationality check on the first temperature sensor and the second temperature sensor respectively; if the low-temperature range sensor rationality check results of the first temperature sensor and the second temperature sensor are both fault-free, then performing a high-temperature range sensor rationality check on the first temperature sensor and the second temperature sensor; if the high-temperature range sensor rationality check results of the first temperature sensor and the second temperature sensor are fault-free, then acquiring a first temperature and a second temperature through the first temperature sensor and the second temperature sensor, and performing derating processing on the motor based on the first temperature and the second temperature.