CA2234584A1 - Remote measurement of internal temperatures through materials penetrable by microwave radiation - Google Patents
Remote measurement of internal temperatures through materials penetrable by microwave radiationInfo
- Publication number
- CA2234584A1 CA2234584A1 CA002234584A CA2234584A CA2234584A1 CA 2234584 A1 CA2234584 A1 CA 2234584A1 CA 002234584 A CA002234584 A CA 002234584A CA 2234584 A CA2234584 A CA 2234584A CA 2234584 A1 CA2234584 A1 CA 2234584A1
- Authority
- CA
- Canada
- Prior art keywords
- materials
- microwave radiation
- radiation
- signals
- target beam
- 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.)
- Granted
Links
- 230000005855 radiation Effects 0.000 title abstract 7
- 239000000463 material Substances 0.000 title abstract 4
- 238000005259 measurement Methods 0.000 title 1
- 239000012212 insulator Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/006—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of the effect of a material on microwaves or longer electromagnetic waves, e.g. measuring temperature via microwaves emitted by the object
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radiation Pyrometers (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A method and an apparatus remotely measures internal temperatures through materials penetrable by microwave radiation. Higher temperature areas for example in high voltage equipment may be detected through procelain clad insulators whereas most detector systems only measure the outside surface. The method comprises selecting a frequency range where the microwave radiation at least partially penetrates the materials, detecting self emitted thermal radiation through the materials for the microwave frequency range in a target beam of a passive receiver, producing signals proportional to the thermal radiation detected in the target beam, remotely scanning the target beam of the passive receiver through a target pattern, comparing the signals for different locations in the target pattern to identify locations emitting higher thermal radiation, and processing the signals to provide an indication of internal temperature for the locations emitting higher thermal radiations.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54267795A | 1995-10-13 | 1995-10-13 | |
| US08/542,677 | 1995-10-13 | ||
| PCT/CA1996/000686 WO1997014941A1 (en) | 1995-10-13 | 1996-10-11 | Remote measurement of internal temperatures through materials penetrable by microwave radiation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2234584A1 true CA2234584A1 (en) | 1997-04-24 |
| CA2234584C CA2234584C (en) | 2005-08-02 |
Family
ID=24164837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002234584A Expired - Fee Related CA2234584C (en) | 1995-10-13 | 1996-10-11 | Remote measurement of internal temperatures through materials penetrable by microwave radiation |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0855019A1 (en) |
| AU (1) | AU2280897A (en) |
| CA (1) | CA2234584C (en) |
| WO (1) | WO1997014941A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1944591A1 (en) * | 2007-01-10 | 2008-07-16 | Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO | Method and device for detecting heat sources |
| US8049620B2 (en) | 2007-06-15 | 2011-11-01 | Icove And Associates, Llc | Passive microwave fire and intrusion detection system including black body and spectral emission at the hydrogen, hydroxyl and hydrogen chloride lines |
| US8044798B2 (en) | 2007-06-15 | 2011-10-25 | Icove And Associates, Llc | Passive microwave speed and intrusion detection system |
| US8493212B2 (en) | 2007-06-15 | 2013-07-23 | Icore and Associates, LLC | Passive microwave system and method for protecting a structure from fire threats |
| US7724134B2 (en) | 2007-06-15 | 2010-05-25 | Icove And Associates, Llc | Passive microwave fire and intrusion detection system |
| EP2073037A1 (en) | 2007-12-21 | 2009-06-24 | Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO | Detecting Concealed Objects Using Electromagnetic Waves |
| CN103985218B (en) * | 2014-05-16 | 2016-10-26 | 中国矿业大学 | Mine hidden fire hazard electromagnetic radiation detecting device and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777270A (en) * | 1972-05-12 | 1973-12-04 | Rockwell International Corp | Precision variable pulse rate nulling radiometer |
| DE2803480C2 (en) * | 1978-01-27 | 1984-11-22 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Method and arrangement for measuring the physical object temperature by means of microwaves |
| JPS6022636A (en) * | 1983-07-19 | 1985-02-05 | Daido Gakuen | Method and device for measuring temperature of object |
| JPH0215397A (en) * | 1988-07-01 | 1990-01-19 | Daido Gakuen | Fire detecting device |
-
1996
- 1996-10-11 AU AU22808/97A patent/AU2280897A/en not_active Abandoned
- 1996-10-11 CA CA002234584A patent/CA2234584C/en not_active Expired - Fee Related
- 1996-10-11 EP EP96933287A patent/EP0855019A1/en not_active Withdrawn
- 1996-10-11 WO PCT/CA1996/000686 patent/WO1997014941A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU2280897A (en) | 1997-05-07 |
| WO1997014941A1 (en) | 1997-04-24 |
| EP0855019A1 (en) | 1998-07-29 |
| CA2234584C (en) | 2005-08-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20131011 |