CN201273846Y - Temperature measurement apparatus based on giant magnet effect - Google Patents
Temperature measurement apparatus based on giant magnet effect Download PDFInfo
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- CN201273846Y CN201273846Y CNU2008200301668U CN200820030166U CN201273846Y CN 201273846 Y CN201273846 Y CN 201273846Y CN U2008200301668 U CNU2008200301668 U CN U2008200301668U CN 200820030166 U CN200820030166 U CN 200820030166U CN 201273846 Y CN201273846 Y CN 201273846Y
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- field detection
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Abstract
The utility model discloses a temperature measuring device based on gigantic magnetic action. The temperature measuring device comprises a temperature probe and a magnetic field detection module. A signal input module and a data processing module are respectively connected with a power module; the data processing module is connected with a signal input module, a keyboard input part, a display part and an output module; the signal input module is connected with the magnetic field detection module; the magnetic field detection module is connected with the power module; the temperature probe is sealed by quartz glass; one or a plurality of magnetized magnetic materials with the specific Curie temperature are arranged in the temperature probe. During the application, the temperature measuring device can be used for detecting the temperature in a contactless mode, is suitable for being used to measure the temperature under special work conditions such as sealed space with high temperature, high pressure, vacuum, high corrosion and high toxicity and the like, and can be used for measuring the temperature of solid surfaces, inner liquid sides and gas centers.
Description
Technical field
The utility model relates to a device that can carry out temperature detection, particularly based on the temperature measuring equipment of giant magnetic effect.
Background technology
In industry, usually need to use methods such as thermopair, thermal resistance to measure temperature, need put into temperature measuring area to temp probe, and probe is connected on the instrument with lead.For the bigger thermometric zone of volume, need very long probe just can detect this regional temperature.In some cases, the operating mode more complicated of temperature area to be measured has the environment of highly corrosive, and is also comparatively serious to the probe infringement.In order to protect probe, can use thicker armor, but this also can cause thermometric sluggishness.The infrared temperature probe can be realized contact-free measurement of temperature, eliminates these influences to a certain extent, but some restrictions are installed, and the temperature survey meeting is subjected to the interference of non-temperature signal.
Summary of the invention
In order to overcome above-mentioned prior art deficiency, the utility model provides a kind of disconnected temperature survey based on giant magnetic effect, does not need too long temp probe, can measure the temperature of " inside " from " outside ", realizes the isolation of " interior ", " outward ".Probe placement is at the position of required detected temperatures, utilizes the entrained magnetic field of probe to transmit temperature information, and magnetic detector needn't have with probe and directly contacts the detection that just can realize temperature.
The technical solution of the utility model is achieved in that
The utility model includes temp probe, magnetic field detection module, signal input module is connected with power module respectively with data processing module, data processing module is connected with output module with signal input module, keyboard input, display part, signal input module is connected with the magnetic field detection module, and the magnetic field detection module is connected with power module.
Described temp probe is encapsulated by quartz glass, and inside is provided with one or several through the magnetic material magnetized, that specific Curie temperature is arranged.
Be packaged with the high sensitivity giant magnetoresistance element in the magnetic field detection module, in use, can use one separately, also can individual quantity use a plurality of according to temp probe.
Adopt the utility model can contactless detected temperatures, be particularly suitable for the mensuration of temperature in the special operation conditions such as high temperature, high pressure, vacuum, highly corrosive, high toxicity, confined space.The measurement of temperature is carried out at solid surface, liquid internal, gas center.
Can realize accessible, non-contacting temperature survey,, therefore can be used for the various work condition environments of non-magnetic field influence because the transmission in magnetic field does not need medium.The temperature range that this utility model detected is extensive, and its precision depends on the Curie point of magnetic material probe.As long as the material of corresponding Curie point is arranged, just can make corresponding probe, measure corresponding temperature.The test section long service life is not subjected to the restriction of operating mode.Can realize the measurement of different temperatures, different monitoring points temperature by using a plurality of probes.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model temp probe structural representation.
Below in conjunction with accompanying drawing content of the present utility model is described in further detail.
Embodiment
With reference to Fig. 1, shown in Figure 2, the magnetoresistive transducer based on giant magnetoresistance effect is arranged in the magnetic field detection module 8.It is placed in the magnetic field 3 of probe, and its output comprises voltage signal, links to each other with signal input module 6.Simultaneously, it needs the galvanic current source when work, obtains by connecting power module 5.
The thermometric zone is placed with probe 2, and the magnetic field 3 that probe produces is received by the magnetoresistive transducer in the magnetic field detection module 8, and sensor internal includes Wheatstone bridge, when magnetic field exists, and the voltage that electric bridge output is bigger.The load module 6 of this voltage process) handle, give data processing module 7, by the analysis to voltage signal, data processing module is determined temperature and whether is reached Curie point, and lead and plug receptacle by inside are connected to display module 10 and output module 11.Output module can produce make-and-break signal, 0～10V voltage signal, 0-100mA current signal or other desired signal as required.Wait in use, information such as Curie-point temperature that also can be by keyboard load module 9 input temps probe, background magnetic field intensity are used when carrying out data analysis for single-chip microcomputer.
Sonde configuration such as Fig. 2:
14 is quartz glass tube, and 12 for to have the fixedly magnetic material of Curie point, and magnetic material is fired with quartz glass and is in the same place.13 is vacuum chamber, and in heating, vacuum can guarantee that probe inside can not cause that gas expands and breaks because of high temperature.
Except temp probe 2 and magnetic field detection module 8, remainder is packed in the control box, control box connects civil power by plug 4, and electricity introducing power module 5, power module produces direct supply, is divided into two-way, and one the tunnel for signal input module 6, control, data processing module 7 uses, other one the tunnel connects magnetic field detection module 8, is its power supply.Signal input module 6 has interface, can connect a plurality of magnetic field detection modules, and it also connects data processing module 7.It amplifies the voltage signal that magnetic field detection module 8 produces, and is converted to digital data transmission and gives data processing module 7.Data processing module includes single-chip microcomputer, and this voltage signal is converted to digital signal, carries out data processing.
Magnetizing assembly is one magnetic material is magnetized electronic equipment.It is a hollow solenoid, and temp probe is put into solenoid central authorities, and when connecting direct current, probe is magnetized.When the magnetic of magnetic material weakens, can magnetize with magnetizing assembly, so that use repeatedly.
Probe placement is in the place that needs detected temperatures, and the magnetic sensing device is placed on the position that can experience probe magnetic field.At normal temperatures, the magnetic field of probe is received by the magneto-dependent sensor in the magnetic field detection module 8.When temperature is elevated to the Curie point of probe, probe magnetic disappears.Magneto-dependent sensor is realized the conversion of magnetic field to voltage.Data processing module is according to stored voltage-temperature table of comparisons, determines temperature and carries out the control of input and output.
When using a plurality of temp probe, need to use a plurality of magnetic field detection modules, they all are connected to load module 8, be arranged as mutually perpendicular direction, formation can three directions of measured X YZ the magnetic field three-axis sensor, utilize software rejuvenation to go out the magnetic field that each temp probe produces, and then judge its temperature.
Claims (3)
1, based on the temperature measuring equipment of giant magnetic effect, include temp probe (2), magnetic field detection module (8), it is characterized in that, signal input module (6) is connected with power module (5) respectively with data processing module (7), data processing module (7) is connected with output module (11) with keyboard input (9), display part (10) simultaneously, signal input module (6) is connected with magnetic field detection module (8), and magnetic field detection module (8) is connected with power module (5).
2, the temperature measuring equipment based on giant magnetic effect according to claim 1 is characterized in that, described temp probe is by quartz glass (14) encapsulation, and inside is provided with one or several are through the magnetic material (12) magnetized, that specific Curie temperature is arranged.
3, the temperature measuring equipment based on giant magnetic effect according to claim 1 is characterized in that, the magnetic field detection module is packaged with the high sensitivity giant magnetoresistance element in (8), uses one or use a plurality of separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200301668U CN201273846Y (en) | 2008-09-02 | 2008-09-02 | Temperature measurement apparatus based on giant magnet effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200301668U CN201273846Y (en) | 2008-09-02 | 2008-09-02 | Temperature measurement apparatus based on giant magnet effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273846Y true CN201273846Y (en) | 2009-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200301668U Expired - Fee Related CN201273846Y (en) | 2008-09-02 | 2008-09-02 | Temperature measurement apparatus based on giant magnet effect |
Country Status (1)
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| CN (1) | CN201273846Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095519A (en) * | 2011-01-26 | 2011-06-15 | 佛山市川东热敏磁电有限公司 | Magnetic resistive (MR) magnetic sensitive temperature sensor |
| CN104568209A (en) * | 2015-01-07 | 2015-04-29 | 大连理工大学 | Magnetic material curie temperature measuring method based on thermogravimetry changes |
| WO2016015369A1 (en) * | 2014-07-31 | 2016-02-04 | 华中科技大学 | Measuring method for non-intrusive rapid temperature changes in direct-current excitation magnetic field |
-
2008
- 2008-09-02 CN CNU2008200301668U patent/CN201273846Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095519A (en) * | 2011-01-26 | 2011-06-15 | 佛山市川东热敏磁电有限公司 | Magnetic resistive (MR) magnetic sensitive temperature sensor |
| WO2016015369A1 (en) * | 2014-07-31 | 2016-02-04 | 华中科技大学 | Measuring method for non-intrusive rapid temperature changes in direct-current excitation magnetic field |
| US9958342B2 (en) | 2014-07-31 | 2018-05-01 | Huazhong University Of Science And Technology | Noninvasive measuring method for rapid temperature variation under DC excitation magnetic field |
| CN104568209A (en) * | 2015-01-07 | 2015-04-29 | 大连理工大学 | Magnetic material curie temperature measuring method based on thermogravimetry changes |
| CN104568209B (en) * | 2015-01-07 | 2017-02-22 | 大连理工大学 | Magnetic material curie temperature measuring method based on thermogravimetry changes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20120902 |