CN112556870A - Method and system for measuring dynamic temperature of superconducting strip - Google Patents
Method and system for measuring dynamic temperature of superconducting strip Download PDFInfo
- Publication number
- CN112556870A CN112556870A CN202011403627.3A CN202011403627A CN112556870A CN 112556870 A CN112556870 A CN 112556870A CN 202011403627 A CN202011403627 A CN 202011403627A CN 112556870 A CN112556870 A CN 112556870A
- Authority
- CN
- China
- Prior art keywords
- superconducting tape
- temperature
- magnetic field
- distribution
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract 15
- 239000011159 matrix material Substances 0.000 claims abstract 7
- 238000012544 monitoring process Methods 0.000 claims abstract 7
- 239000000523 sample Substances 0.000 claims abstract 7
- 238000009529 body temperature measurement Methods 0.000 claims abstract 6
- 230000002269 spontaneous effect Effects 0.000 claims abstract 5
- 230000002159 abnormal effect Effects 0.000 claims abstract 4
- 238000007689 inspection Methods 0.000 claims 4
- 230000005355 Hall effect Effects 0.000 claims 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 230000004907 flux Effects 0.000 claims 1
- 239000006260 foam Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 229910052697 platinum Inorganic materials 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/10—Plotting field distribution ; Measuring field distribution
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1238—Measuring superconductive properties
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The application belongs to the technical field of temperature measurement of superconducting materials, and particularly relates to a dynamic temperature measurement method and system for a superconducting tape. According to the dynamic temperature measuring method for the superconducting tape, the matrix type temperature testing monitoring unit and the low-temperature scanning Hall probe are arranged, the temperature distribution field signals and the magnetic field distribution signals of the superconducting tape are collected, the time dimension of aligning the temperature distribution field signals is calibrated by the magnetic field distribution signals, and the technical purpose of acquiring the real-time temperature distribution field signals is achieved. According to the method, the spontaneous magnetic field value of the superconducting tape is measured by the low-temperature scanning Hall probe, whether the superconducting tape is quenched or not is judged, and the delay time is found at the moment of abnormal temperature change and abnormal magnetic field change, so that the temperature distribution field signal is calibrated and aligned on a time scale, the real-time positionable dynamic temperature distribution of the superconducting tape is finally obtained, the measurement time delay of the temperature sensor can be effectively overcome, and the method has the advantages of small error and high efficiency.
Description
Technical Field
The application relates to the technical field of temperature measurement of superconducting materials, in particular to a dynamic temperature measurement method and system for a superconducting tape.
Background
In recent years, research on various properties of superconducting materials has been a relatively hot issue, and in particular, in terms of quench properties of superconducting tapes, research in the industry has been focused on the superconducting tapes due to their great value in industrial applications.
When the superconducting equipment is in operation and quench, the current capacity can be reduced, and irreversible damage can be caused if no measures are taken, so that the monitoring and the protection of the superconducting equipment during the operation are particularly important. The change in physical properties of the superconducting tape upon quench is manifested in various aspects, such as temperature, current, and magnetic field. According to the temperature characteristics of the superconducting tape and the change of the surrounding magnetic field, when the superconducting tape loses overtime, hot spots are locally generated to cause local temperature rise, and dynamic temperature measurement can be carried out by arranging a matrix type temperature testing and monitoring system on the superconducting tape so as to position the point of failure.
However, experiments have shown that when the measured temperature changes suddenly, the output of the temperature sensor is delayed for a period of time, which is commonly referred to as a pure lag or delay. When the temperature of the superconducting tape is measured, if the time constant and the lag of the temperature sensor are not corrected, the measured result is deviated, and the quench time and the quench part of the superconducting tape cannot be accurately judged. Therefore, a method and a system for measuring the dynamic temperature of the superconducting tape without pure time delay are needed to solve the technical problem of time delay misalignment in the measurement of the dynamic temperature of the superconducting tape.
Disclosure of Invention
The application provides a method and a system for measuring the dynamic temperature of a superconducting tape, which are used for solving the problem of pure time delay calibration in the current superconducting tape temperature measurement.
The technical scheme adopted by the application is as follows:
in a first aspect of the present application, there is provided a method for measuring a dynamic temperature of a superconducting tape, comprising the steps of:
building a through-flow platform to enable the superconducting tape to be in a low-temperature environment and generate a spontaneous magnetic field;
arranging a matrix type temperature test monitoring unit for acquiring a temperature distribution field signal of the superconducting tape;
setting a low-temperature scanning Hall probe, and acquiring a magnetic field distribution signal of the superconducting tape by utilizing a Hall effect;
and analyzing to obtain the dynamic temperature distribution of the superconducting tape according to the obtained temperature distribution field signal and the obtained magnetic field distribution signal.
Optionally, the temperature sensors in the matrix temperature test monitoring unit are connected in series by twisted pairs, and a plurality of twisted pairs are uniformly distributed and attached to the surface of the superconducting tape according to a preset distance to collect a temperature distribution field signal of the superconducting tape.
Optionally, the step of constructing the through-flow platform to make the superconducting tape in a low-temperature environment and generate a spontaneous magnetic field includes:
two ends of the superconducting tape are connected with a current generating device through copper wires, the superconducting tape is immersed in liquid nitrogen, the superconducting tape is in a low-temperature environment lower than 200 ℃ below zero, the current generating device generates strong current, and meanwhile, the superconducting tape generates a spontaneous magnetic field.
Optionally, the step of setting the low-temperature scanning hall probe and obtaining the magnetic field distribution signal of the superconducting tape by using the hall effect includes:
the low-temperature scanning Hall probe is arranged below the superconducting tape and used for detecting and acquiring a magnetic field distribution signal of the superconducting tape.
Optionally, in the step of analyzing and obtaining the dynamic temperature distribution of the superconducting tape according to the obtained temperature distribution field signal and the obtained magnetic field distribution signal, the method includes:
the computer sends an acquisition instruction to the inspection host, the inspection host forwards the acquisition instruction to each extension, each extension drives the matrix temperature test monitoring unit and the low-temperature scanning Hall probe to continuously acquire temperature signals and magnetic field signals according to the acquisition instruction, the acquired temperature signals and magnetic field signals are transmitted back to the inspection host, the inspection host uploads the temperature signals and magnetic field signals to the computer, the computer stores, displays and processes the received data in real time, and finally the computer performs preset operation according to the processing and analyzing result.
Optionally, in the step of analyzing and obtaining the dynamic temperature distribution of the superconducting tape according to the obtained temperature distribution field signal and the obtained magnetic field distribution signal, the analyzing process includes:
if the magnetic flux density of the superconducting tape changes at a certain moment, the superconducting tape is judged to be in a quench state, the computer calculates the lag time T-Tc of the matrix type temperature test monitoring unit according to the fastest abnormal change moment T of the temperature rise in the temperature distribution field signal and the abnormal change moment Tc of the magnetic field in the magnetic field distribution signal, and the thermal distribution field information of the superconducting tape is calibrated and aligned on the time scale to obtain the real-time dynamic temperature distribution of the positionable superconducting tape.
Optionally, the strong current is a direct current or an alternating current with a critical current greater than or equal to 2000 amperes of the superconducting tape.
Optionally, a platinum thermistor temperature sensor is adopted in the matrix temperature test monitoring unit.
In another aspect of the present application, there is provided a superconducting tape dynamic temperature measurement system comprising:
the through-flow platform is used for enabling the superconducting strip to be in a low-temperature environment and generating a spontaneous magnetic field;
the matrix type temperature test monitoring unit is used for acquiring a temperature distribution field signal of the superconducting tape;
the low-temperature scanning Hall probe is used for acquiring a magnetic field distribution signal of the superconducting tape by utilizing a Hall effect;
and the computer is used for analyzing and obtaining the dynamic temperature distribution of the superconducting tape according to the obtained temperature distribution field signal and the obtained magnetic field distribution signal.
Optionally, the method further includes:
an insulating plate for fixing the superconducting tape thereon;
a foam box for housing the insulation plate and the superconducting tape.
The technical scheme of the application has the following beneficial effects:
the technical purpose of acquiring real-time temperature distribution field signals is achieved by arranging a matrix type temperature test monitoring unit and a low-temperature scanning Hall probe, acquiring temperature distribution field signals and magnetic field distribution signals of a superconducting strip and calibrating and aligning the time dimension of the temperature distribution field signals by using the magnetic field distribution signals. The measuring point with the local temperature rise in the temperature distribution field signal of the superconducting tape is judged as the point of failure in overtaking, and the measuring result obtained by the method can be used for positioning the point of failure in overtaking of the superconducting tape.
The superconducting tape spontaneous magnetic field value is measured by the low-temperature scanning Hall probe while the superconducting tape flows through the flow, whether the superconducting tape is quenched or not is judged according to the magnetic field distribution condition of the superconducting tape, and the delay time is found at the moment of abnormal temperature change and abnormal magnetic field change when the superconducting tape is quenched, so that the measurement result of the temperature sensor of the alignment matrix type temperature test monitoring unit is calibrated on a time scale, real-time positionable dynamic temperature distribution of the superconducting tape is finally obtained, the measurement time delay of the temperature sensor can be effectively overcome, and the superconducting tape spontaneous magnetic field value measuring device has the advantages of small error and high efficiency.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
illustration of the drawings:
the device comprises a 1-through flow platform, a 2-superconducting strip, a 3-matrix temperature test monitoring unit and a 4-low temperature scanning Hall probe.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
In a first aspect of the present application, there is provided a method for measuring a dynamic temperature of a superconducting tape 2, comprising the steps of:
building a through-flow platform 1 to enable the superconducting strip 2 to be in a low-temperature environment and generate a spontaneous magnetic field;
arranging a matrix type temperature test monitoring unit 3 for acquiring a temperature distribution field signal of the superconducting tape 2;
setting a low-temperature scanning Hall probe 4, and acquiring a magnetic field distribution signal of the superconducting tape 2 by utilizing a Hall effect;
the dynamic temperature distribution of the superconducting tape 2 is analyzed and obtained according to the obtained temperature distribution field signal and the obtained magnetic field distribution signal.
As shown in fig. 1, the matrix temperature measurement monitoring unit 3 in this embodiment is attached to the upper surface of the superconducting tape 2. Matrix temperature test monitoring unit 3, exemplarily adopt platinum resistance temperature sensor, utilize the principle that platinum resistance value changes along with the change of temperature, insert four pins of platinum resistance into the universal meter, apply a method of known excitation current measurement its both ends voltage to platinum resistance through the universal meter and obtain the resistance value, resistance-temperature corresponding relation in the national standard has been set up in the universal meter, can convert into the temperature value by the resistance value, thereby realize temperature measurement, platinum resistance temperature sensor's temperature signal line adopts the four-wire system to carry out the wiring, draw forth the four-wire from platinum resistance both ends, circuit loop and measurement circuit independently separate the wiring during the wiring, in order to improve measurement accuracy, its temperature matrix expression is:
the low-temperature scanning Hall probe 4 is arranged below the superconducting tape 2, the low-temperature scanning Hall probe 4 utilizes the principle of Hall effect, the superconducting current density is a function of the position of the superconducting tape 2 and the magnetic flux density, and the magnetic flux change can be observed through continuous scanning by measuring the spontaneous magnetic field value according to the Biot-Saval law. Once quench occurs, the magnetic flux density changes due to the change of the superconducting current density, the lag time of the temperature distribution field signal can be obtained by comparing the abnormal time of the magnetic field distribution signal with the abnormal time of the temperature distribution field signal, and the temperature distribution field signal is subjected to time alignment calibration according to the lag time to obtain a real-time temperature distribution field signal.
Optionally, the temperature sensors in the matrix temperature testing and monitoring unit 3 are serially connected by twisted-pair lines, and a plurality of twisted-pair lines are uniformly distributed and attached to the surface of the superconducting tape 2 according to a preset distance to collect the temperature distribution field signal of the superconducting tape 2.
Optionally, the step of constructing the through-flow platform 1 to make the superconducting tape 2 in a low-temperature environment and generate a spontaneous magnetic field includes:
two ends of the superconducting tape 2 are connected with a current generating device through copper wires, the superconducting tape 2 is immersed in liquid nitrogen, the superconducting tape 2 is in a low-temperature environment lower than 200 ℃ below zero, the current generating device generates strong current, and meanwhile the superconducting tape 2 generates a spontaneous magnetic field.
Optionally, the step of setting the low-temperature scanning hall probe 4 and obtaining the magnetic field distribution signal of the superconducting tape 2 by using the hall effect includes:
the low-temperature scanning Hall probe 4 is arranged below the superconducting tape 2 and is used for detecting and acquiring a magnetic field distribution signal of the superconducting tape 2.
Optionally, in the step of analyzing and obtaining the dynamic temperature distribution of the superconducting tape 2 according to the obtained temperature distribution field signal and the obtained magnetic field distribution signal, the method includes:
the computer sends an acquisition instruction to the inspection host, the inspection host forwards the acquisition instruction to the extension sets, the extension sets drive the matrix type temperature test monitoring unit 3 and the low-temperature scanning Hall probe 4 to continuously acquire temperature signals and magnetic field signals according to the acquisition instruction, the acquired temperature signals and magnetic field signals are transmitted back to the inspection host, the inspection host uploads the temperature signals and magnetic field signals to the computer, the computer stores, displays and processes the received data in real time, and finally the computer performs preset operation according to the processing and analyzing result.
Optionally, in the step of analyzing and obtaining the dynamic temperature distribution of the superconducting tape 2 according to the obtained temperature distribution field signal and the obtained magnetic field distribution signal, the analyzing process includes:
if the magnetic flux density of the superconducting tape 2 changes at a certain moment, the superconducting tape 2 is judged to be in a quench state, the computer calculates the lag time T-Tc of the matrix temperature test monitoring unit 3 according to the fastest abnormal change moment T of temperature rise in the temperature distribution field signal and the abnormal change moment Tc of the magnetic field in the magnetic field distribution signal, and the thermal distribution field information of the superconducting tape 2 is calibrated and aligned on a time scale to obtain the real-time dynamic temperature distribution of the positionable superconducting tape 2.
Optionally, the strong current is a direct current or an alternating current with a critical current greater than or equal to 2000 amperes of the superconducting tape 2.
In this embodiment, the strong current is a conventional word commonly used in experiments in the field, and its essential meaning is relative, i.e. relative to the properties of the superconducting material used in the experiments and the experimental conditions; in general, the current is equal to or higher than the critical current of the superconducting tape 2 but lower than a certain value. The application of a strong current to the superconducting tape 2 causes the superconducting tape 2 to lose its superconducting properties. In this embodiment, the strong current is defined as a direct current or an alternating current greater than the critical current of the superconducting tape 2 by 2000 amperes or less, and plays a guiding role in the effectiveness of the experiment.
Optionally, a platinum thermistor temperature sensor is adopted in the matrix temperature test monitoring unit 3.
In another aspect of the present application, there is provided a superconducting tape 2 dynamic temperature measurement system comprising:
the through-flow platform 1 is used for enabling the superconducting strip 2 to be in a low-temperature environment and generating a spontaneous magnetic field;
the matrix type temperature test monitoring unit 3 is used for acquiring a temperature distribution field signal of the superconducting tape 2;
the low-temperature scanning Hall probe 4 is used for acquiring a magnetic field distribution signal of the superconducting tape 2 by utilizing a Hall effect;
and the computer is used for analyzing and obtaining the dynamic temperature distribution of the superconducting tape 2 according to the obtained temperature distribution field signal and the obtained magnetic field distribution signal.
Optionally, the method further includes:
an insulating plate for fixing the superconducting tape 2 thereon;
a foam box for housing the insulating plate and the superconducting tape 2.
In the embodiment, an insulating plate is arranged at the bottom of a foam box body with an upward opening, a superconducting tape 2 is fixed on the insulating plate, and two ends of the superconducting tape 2 are connected with a current generating device through a copper wire to obtain a through-flow platform 1, so that the superconducting tape 2 generates a spontaneous magnetic field; injecting liquid nitrogen for immersing the superconducting tape 2 into the foam box body, so that the superconducting tape 2 is in a low-temperature environment of 200 ℃ below zero; installing a matrix type temperature test monitoring unit 3 on the upper surface of the superconducting tape 2, and collecting the temperature distribution field of the superconducting tape 2 in a matrix type multi-point mode; the low-temperature scanning Hall probe 4 is arranged below the superconducting tape 2, and the magnetic field distribution of the superconducting tape 2 is detected. The arrangement of the insulating plate and the foam box is beneficial to efficiently building the through-flow platform 1 and simultaneously beneficial to the measurement stability and accuracy of the dynamic temperature measurement system of the superconducting tape 2.
This application is through setting up matrix temperature test monitoring unit 3 and low temperature scanning hall probe 4, gathers superconducting tape 2's temperature distribution field signal and magnetic field distribution signal, through removing the time dimension of alignment temperature distribution field signal with magnetic field distribution signal, realizes the technical purpose who obtains real-time temperature distribution field signal. By judging the measuring point with the local temperature rise in the temperature distribution field signal of the superconducting tape 2 as the point of failure, the measuring result obtained by the method can be used for positioning the point of failure of the superconducting tape 2.
According to the method, the spontaneous magnetic field value of the superconducting tape 2 is measured by the low-temperature scanning Hall probe 4 while the superconducting tape flows through, whether the superconducting tape 2 is subjected to quench or not is judged according to the magnetic field distribution condition of the superconducting tape 2, the delay time is found at the moment of abnormal temperature change and abnormal magnetic field change, the measurement result of the temperature sensor of the alignment matrix type temperature test monitoring unit 3 is calibrated on a time scale, the real-time positionable dynamic temperature distribution of the superconducting tape 2 is finally obtained, the measurement time delay of the temperature sensor can be effectively overcome, and the method has the advantages of small error and high efficiency.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403627.3A CN112556870A (en) | 2020-12-02 | 2020-12-02 | Method and system for measuring dynamic temperature of superconducting strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403627.3A CN112556870A (en) | 2020-12-02 | 2020-12-02 | Method and system for measuring dynamic temperature of superconducting strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112556870A true CN112556870A (en) | 2021-03-26 |
Family
ID=75048412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011403627.3A Pending CN112556870A (en) | 2020-12-02 | 2020-12-02 | Method and system for measuring dynamic temperature of superconducting strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112556870A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325067A (en) * | 2021-05-31 | 2021-08-31 | 云南电网有限责任公司电力科学研究院 | Superconducting tape defect positioning system and method |
| CN115978444A (en) * | 2023-03-21 | 2023-04-18 | 北京中科富海低温科技有限公司 | Low-temperature transmission system |
| CN117781897A (en) * | 2024-02-28 | 2024-03-29 | 常州市伟通机电制造有限公司 | Strip width inspection system and inspection method based on image acquisition |
| CN118294863A (en) * | 2024-04-12 | 2024-07-05 | 兰州大学 | Superconducting strip magnetic field measuring device and method based on Hall sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359905A (en) * | 2011-09-28 | 2012-02-22 | 兰州大学 | Multi-point testing system for dynamic surface magnetic field and thermal distribution of superconductor |
| US20200166586A1 (en) * | 2018-10-03 | 2020-05-28 | Quinc.Tech Inc. | Dynamic range module, system and method |
| CN111238672A (en) * | 2020-02-17 | 2020-06-05 | 重庆大学 | Superconducting tape dynamic temperature measurement method based on magnetic microscopy |
-
2020
- 2020-12-02 CN CN202011403627.3A patent/CN112556870A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359905A (en) * | 2011-09-28 | 2012-02-22 | 兰州大学 | Multi-point testing system for dynamic surface magnetic field and thermal distribution of superconductor |
| US20200166586A1 (en) * | 2018-10-03 | 2020-05-28 | Quinc.Tech Inc. | Dynamic range module, system and method |
| CN111238672A (en) * | 2020-02-17 | 2020-06-05 | 重庆大学 | Superconducting tape dynamic temperature measurement method based on magnetic microscopy |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325067A (en) * | 2021-05-31 | 2021-08-31 | 云南电网有限责任公司电力科学研究院 | Superconducting tape defect positioning system and method |
| CN115978444A (en) * | 2023-03-21 | 2023-04-18 | 北京中科富海低温科技有限公司 | Low-temperature transmission system |
| CN117781897A (en) * | 2024-02-28 | 2024-03-29 | 常州市伟通机电制造有限公司 | Strip width inspection system and inspection method based on image acquisition |
| CN117781897B (en) * | 2024-02-28 | 2024-05-07 | 常州市伟通机电制造有限公司 | Strip width inspection system and inspection method based on image acquisition |
| CN118294863A (en) * | 2024-04-12 | 2024-07-05 | 兰州大学 | Superconducting strip magnetic field measuring device and method based on Hall sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112556870A (en) | Method and system for measuring dynamic temperature of superconducting strip | |
| CN106093575A (en) | A kind of method measuring conductor resistivity at room temperature and temperature-coefficient of electrical resistance under alternating temperature | |
| US7077563B2 (en) | Deposition sensor based on differential heat flux measurement | |
| CN111238672B (en) | A method for dynamic temperature measurement of superconducting tape based on magnetic microscopy | |
| CN102914560A (en) | Device and method for measuring film thermoelectric performance parameters | |
| WO2009003395A1 (en) | A wide range and high accuracy on-line current and temperature measuring device and method | |
| CN109765270A (en) | A system for measuring phase transition of amorphous thin film and method for measuring phase transition of amorphous thin film | |
| CN109596890A (en) | A kind of temperature-coefficient of electrical resistance tester | |
| CN107085007A (en) | Equipment and method for detecting thermoelectric performance parameters of one-dimensional micro-nano materials | |
| CN205826750U (en) | Conductor resistivity at room temperature and the device of temperature-coefficient of electrical resistance is measured under a kind of alternating temperature | |
| CN103822872A (en) | Dew point corrosion monitoring method based on electrochemical noise | |
| CN115638718A (en) | An operating environment detection system for displacement detection devices based on big data | |
| CN204514832U (en) | Substation transformer winding wood properly test system | |
| Belloni et al. | On the experimental calibration of a potential drop system for crack length measurements in a compact tension specimen | |
| CN111562035A (en) | Quick calibration device and calibration method for exhaust temperature sensor at high temperature | |
| CN114111873B (en) | Online calibration system and method for refrigerator detector | |
| CN102809445B (en) | Thermocouple detection method | |
| CN202886017U (en) | Portable polarity extension connector used for thermocouple calibration | |
| CN109612919A (en) | A method for detecting galvanic type atmospheric corrosion sensor | |
| CN103644884B (en) | Based on thermometric power cable connector job specfication detection method | |
| CN211180033U (en) | Heating defect grading device | |
| US11630081B2 (en) | Method for non-destructively examining an anode of an aluminium electrolysis cell | |
| CN217717525U (en) | Electric power fitting defect detection device | |
| CN111913127A (en) | Intelligent detection device and method for tubular bus | |
| CN116413310B (en) | Test device and method for measuring heat conductivity coefficient under dynamic temperature condition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |
|
| RJ01 | Rejection of invention patent application after publication |