63results about "Cryogenic temperature measurement" patented technology

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.

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.

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 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.

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.

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.

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 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.

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.

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.

The present invention provides a method to calibrate sensors and use of such sensors. In particular, the method of calibrating sensors can be carried out using ablation. The present invention also provides a method of generating a sensor by a direct electrical and / or mechanical attachment of surface-mount technology and surface mount devices to bonded, flexible, multiconductor ribbon cable.

A temperature integrity sensor or more precisely a temperature continuity sensor of a product which needs to be kept at a temperature below its degradation temperature, is provided. The product includes a refrigerated or frozen edible product; a pharmaceutical product such as a vaccine, or an antibiotic; or a biological-medical product such as a sample of a body fluid or tissue, or an organ. The sensor is based on RFID technology, in particular passive RFID technology.

The present specification describes a quantum computing system comprising a superconducting material sample, a cryogenic temperature sensor including a current source configured to pass a current through the superconducting material sample, and a voltage sensor configured to sense a voltage across the superconducting material sample, and a control unit including: controlling the current source to time-vary a current through the superconducting material sample while the voltage sensor senses a voltage across the superconducting material sample; detecting the change in the sensed voltage; and calculating a temperature of the superconducting material sample based on the value of the current upon detection of the change in the sensed voltage.

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 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 invention relates to a fixing insert (6) for fixing a thermometer (1) in a tubular connection (3) of a measuring tube (2), comprising: a retaining element (11) for fixing the thermometer (1) to the fixing insert (6); and a locking device (8) designed to prevent rotational movement relative to the measuring tube (2). The invention also relates to an assembly comprising: a thermometer (1); and a fixing insert (6) according to the invention. According to the invention, at least one component of the fixing insert (6) is designed and / or arranged such that the fixing insert (6) can be moved in the direction of the longitudinal axis of the tubular connection (3).

A current-sensing noise thermometer includes: a sensor resistor thermally coupled to a target; a superconducting coil; a superconducting thermal circuit breaker located between the two ends of the sensor resistor and the two ends of the superconducting coil; and a superconducting flow sensor; wherein the sensor resistor, the superconducting coil, and the superconducting thermal circuit breaker form a loop inductively coupled to the superconducting flow sensor. A noise filter may be present between the sensor resistor and the superconducting coil.

Circuits and methods related to temperature sensing of regions within a superconducting integrated circuit (IC) using in-situ resonators are described. An example relates to a superconducting IC including a first resonator having a first spatial location in relation to a floor plan of the superconducting IC. The superconducting IC further includes a second resonator having a second spatial location in relation to the floor plan of the superconducting IC. The superconducting IC further includes a feed line configured to provide a test signal to each of the first resonator and the second resonator in order to elicit a frequency response from the first resonator or the second resonator, where the frequency response is correlated with a first region within the superconducting IC corresponding to the first spatial location or with a second region within the superconducting IC corresponding to the second spatial location.

Aspects of the technology provide a method / system of sensing a change in temperature and / or strain in an optical fibre comprising a substantially continuous or quasi-continuous fibre Bragg grating. A difference spectrum is determined between a reference reflected spectrum of the fibre Bragg grating and a monitored reflected spectrum. The difference spectrum is analysed to determine whether the optical fibre is experiencing a change of type a)—a temperature increase or an extension—or of type b)—a temperature decrease or a contraction. The technology may be applied to sensing a change in temperature and / or strain in a superconductor or detecting a risk of a quench in a superconductor.

The invention discloses a low-temperature temperature sensor mounting device which comprises a temperature sensor, a device base, a heat sink column and a device shell. The temperature sensor and the heat sink column are fixedly installed on the device base, and the device shell is fixed to the device base and surrounds the temperature sensor and the heat sink column to form a protection structure for the temperature sensor. An electric signal lead of the temperature sensor is fixed to the heat sink column in any one mode of winding, gluing, clamping or magnetic force, and then is led out of the low-temperature temperature sensor installation device through a reserved gap formed by the device shell and the device base. And the temperature sensor is connected to a signal generating or processing device matched with the temperature sensor so as to read the temperature value of the measured piece. The temperature sensor has the remarkable advantages of being flexible in installation mode, adaptive to sensors of different specifications, high in temperature measurement accuracy, reliable in sensor protection and the like, and an efficient solution is provided for stable installation and accurate temperature measurement of the temperature sensor in the low-temperature environment.

This specification describes a cryogenic temperature sensor is comprising: a superconductor material sample; a current source configured to pass a current through the superconductor material sample; 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 time-vary the current through the superconductor material sample while the voltage sensor senses the voltage across the superconductor material sample; detect a change in the sensed voltage; and compute the temperature of the superconductor material sample based on the value of the current at the time of the detected change in the sensed voltage.

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). The cylindrical sheath (5) is mechanically coupled to the second coating (4) by the presence of indentations and / or perforations within it that are filled with the material comprised in the second coating, by a thermal process so that it exerts a pressure or throttling in the radial direction on the second coating (4) or by a combination of both. 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.