CN111256831B - Infrared temperature sensor - Google Patents
Infrared temperature sensor Download PDFInfo
- Publication number
- CN111256831B CN111256831B CN201811452462.1A CN201811452462A CN111256831B CN 111256831 B CN111256831 B CN 111256831B CN 201811452462 A CN201811452462 A CN 201811452462A CN 111256831 B CN111256831 B CN 111256831B
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- China
- Prior art keywords
- infrared light
- light emitting
- infrared
- emitting element
- light receiving
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- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000002474 experimental method Methods 0.000 claims description 3
- 230000003749 cleanliness Effects 0.000 claims 1
- 238000011109 contamination Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
Abstract
The invention relates to an infrared temperature sensor, which comprises a shell, an infrared light emitting element and an infrared light receiving element which are arranged in the shell, and a lens which is arranged on the shell and can be penetrated by infrared rays, and is characterized in that: also includes a control element; a control element is internally stored with a comparison database; in the actual use process of the infrared temperature sensor, the control element acquires a first actual signal output by the infrared light receiving element when the infrared light emitting element is closed and a second actual signal output by the infrared light receiving element when the infrared light emitting element is opened; and then inquiring a comparison database, under the condition of finding out the same lens cleaning degree, outputting a temperature value corresponding to a first reference signal and a second reference signal which are closest to the first actual signal and the second actual signal as an actual temperature value, and outputting the found lens cleaning degree. Compared with the prior art, the invention has the advantages that: the contamination level of the lens and the actual temperature of the object to be measured can be obtained.
Description
Technical Field
The invention relates to an infrared temperature sensor.
Background
In order to use a heating device such as a cooker more safely and to increase the degree of intellectualization of the heating device such as a cooker, it is necessary to install a temperature sensor for detecting the temperature of a heating object such as a cooker. Contact-type temperature sensors or non-contact-type temperature sensors are generally used at present. The infrared temperature sensor is a commonly used non-contact temperature sensor, and comprises an infrared light source emitting element, an infrared light receiving element and a lens on the surface. And infrared temperature sensor is in the use, is polluted easily on the lens of surface, makes infrared temperature sensor inefficacy can't detect true temperature to make intelligent cooking utensils use the function relevant with the temperature data can't realize.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an infrared temperature sensor which can detect the pollution degree of a lens and can detect the actual real temperature of a measured object in view of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an infrared temperature sensor, including the casing, sets up infrared light emitting component, the infrared light receiving element in the casing, and set up on the casing, can be by the lens that the infrared ray sees through, its characterized in that: the infrared light emitting element is electrically connected with the infrared light receiving element, and the infrared light emitting element and the infrared light receiving element are electrically connected with the infrared light emitting element and the infrared light receiving element; a control database is stored in the control element, and the information included in the control database includes: the infrared temperature sensor adopts lenses with different preset cleaning degrees, and respectively outputs a first reference signal when the infrared light emitting element is closed and outputs an infrared light receiving element when the infrared light emitting element is opened when objects with different temperatures are detected; in the actual use process of the infrared temperature sensor, the control element acquires a first actual signal output by the infrared light receiving element when the infrared light emitting element is closed and a second actual signal output by the infrared light receiving element when the infrared light emitting element is opened; then inquiring a comparison database, finding a first temperature value corresponding to a first reference signal closest to the first actual signal and a second temperature value corresponding to a second reference signal closest to the second actual signal under the condition of the same lens cleaning degree according to a closest principle, and outputting the first temperature value or the second temperature value as an actual temperature value if the absolute value of the difference value between the first temperature value and the second temperature value is less than or equal to a preset temperature threshold value; the control unit also outputs the found lens cleaning degree.
As an improvement, the control element acquires the comparison database by:
under the experimental environment, after a large number of experiments and lenses with different artificially set cleaning degrees, respectively closing the infrared light emitting element and closing and opening the infrared light emitting element, and acquiring a first reference signal output by the infrared light receiving element when the infrared light emitting element is closed and an second reference signal output by the infrared light receiving element when the infrared light emitting element is opened, wherein the lenses with different cleaning degrees are installed on the infrared sensor;
the format of the comparison database is:
the infrared light emitting element is arranged on a first side wall in the shell, the infrared light receiving element is arranged on a second side wall in the shell, and the lens is arranged on the shell on the other side opposite to the first side wall and the second side wall.
Compared with the prior art, the invention has the advantages that: the contamination level of the lens and the actual temperature of the object to be measured can be obtained.
Drawings
Fig. 1 is a schematic structural diagram of an infrared temperature sensor in an embodiment of the present invention.
Fig. 2 is a schematic diagram of an internal structure of an infrared temperature sensor according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The infrared temperature sensor as shown in fig. 1 and 2 comprises a housing 1, an infrared light emitting element 2, an infrared light receiving element 3 and a lens 4 which is arranged on the housing and can be penetrated by infrared rays, wherein the infrared light emitting element 2 is arranged on a first side wall in the housing 1, the infrared light receiving element 3 is arranged on a second side wall in the housing 1, and the lens 4 is obliquely arranged on the housing on the other side opposite to the first side wall and the second side wall. In addition, a control element 5 electrically connected with the infrared light emitting element and the infrared light receiving element is arranged in the shell, and the control element 5 can control the external light emitting element to be turned on and off and can receive an output signal of the infrared light receiving element.
A control database is stored in the control unit 5, and the information included in the control database includes: the infrared temperature sensor adopts lenses with different preset cleaning degrees, and respectively outputs a first reference signal when the infrared light emitting element is closed and outputs an infrared light receiving element when the infrared light emitting element is opened when objects with different temperatures are detected; the control unit 5 acquires the comparison database by:
under the experimental environment, after a large number of experiments and lenses with different artificially set cleaning degrees, respectively closing the infrared light emitting element and closing and opening the infrared light emitting element, and acquiring a first reference signal output by the infrared light receiving element when the infrared light emitting element is closed and an second reference signal output by the infrared light receiving element when the infrared light emitting element is opened, wherein the lenses with different cleaning degrees are installed on the infrared sensor;
the format of the comparison database is:
in the actual use process of the infrared temperature sensor, the control element acquires a first actual signal output by the infrared light receiving element when the infrared light emitting element is closed and a second actual signal output by the infrared light receiving element when the infrared light emitting element is opened; then inquiring a comparison database, finding a first temperature value corresponding to a first reference signal closest to the first actual signal and a second temperature value corresponding to a second reference signal closest to the second actual signal under the condition of the same lens cleaning degree according to a closest principle, and outputting the first temperature value or the second temperature value as an actual temperature value if the absolute value of the difference value between the first temperature value and the second temperature value is less than or equal to a preset temperature threshold value; the control unit also outputs the found lens cleaning degree.
Claims (3)
1. The utility model provides an infrared temperature sensor, including the casing, sets up infrared light emitting component, the infrared light receiving element in the casing, and set up on the casing, can be by the lens that the infrared ray sees through, its characterized in that: the infrared light emitting device also comprises a control element electrically connected with the infrared light emitting element and the infrared light receiving element, wherein the control element can control the infrared light emitting element to be turned on and off and can also receive an output signal of the infrared light receiving element; a control database is stored in the control element, and the information included in the control database includes: the infrared temperature sensor adopts lenses with different preset cleaning degrees, and respectively outputs a first reference signal when the infrared light emitting element is closed and outputs an infrared light receiving element when the infrared light emitting element is opened when objects with different temperatures are detected; in the actual use process of the infrared temperature sensor, the control element acquires a first actual signal output by the infrared light receiving element when the infrared light emitting element is closed and a second actual signal output by the infrared light receiving element when the infrared light emitting element is opened; then inquiring a comparison database, finding a first temperature value corresponding to a first reference signal closest to the first actual signal and a second temperature value corresponding to a second reference signal closest to the second actual signal under the condition of the same lens cleanliness degree according to a closest principle, and outputting the first temperature value or the second temperature value as an actual temperature value if the absolute value of the difference value between the first temperature value and the second temperature value is less than or equal to a preset temperature threshold value; the control unit also outputs the found lens cleaning degree.
2. The infrared temperature sensor of claim 1, wherein: the control component acquires the comparison database by:
under the experimental environment, through a large number of experiments and lenses with different artificially set cleaning degrees, respectively turning off the infrared light emitting element and turning on the infrared light emitting element, obtaining the lenses with different cleaning degrees installed on the infrared sensor, and when detecting objects with different temperatures, when the infrared light emitting element is turned off, outputting a first reference signal by the infrared light receiving element, and when the infrared light emitting element is turned on, outputting a second reference signal by the infrared light receiving element;
the format of the comparison database is:
3. the infrared temperature sensor according to claim 1 or 2, characterized in that: the infrared light emitting element is arranged on a first side wall in the shell, the infrared light receiving element is arranged on a second side wall in the shell, the lens is obliquely arranged on the shell on the other side opposite to the first side wall and the second side wall, and a triangle can be formed among the first side wall, the second side wall and the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452462.1A CN111256831B (en) | 2018-11-30 | 2018-11-30 | Infrared temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452462.1A CN111256831B (en) | 2018-11-30 | 2018-11-30 | Infrared temperature sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111256831A CN111256831A (en) | 2020-06-09 |
| CN111256831B true CN111256831B (en) | 2021-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811452462.1A Active CN111256831B (en) | 2018-11-30 | 2018-11-30 | Infrared temperature sensor |
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| CN (1) | CN111256831B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008357A (en) * | 2021-02-26 | 2021-06-22 | 中煤科工集团重庆研究院有限公司 | Distributed multi-parameter detection optical fiber correction method |
| CN113251447B (en) * | 2021-06-02 | 2024-03-15 | 福州湘福机电科技有限公司 | Gas electric stove monitoring device based on infrared light sense and distance detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU3177300A (en) * | 1999-03-10 | 2000-09-28 | Melexis Nv | Radiation sensor |
| JP2004045330A (en) * | 2002-07-15 | 2004-02-12 | Ricoh Co Ltd | Noncontact temperature detector |
| GB2392555A (en) * | 2002-09-02 | 2004-03-03 | Qinetiq Ltd | Hermetic packaging |
| CN206208783U (en) * | 2016-10-14 | 2017-05-31 | 无锡科技职业学院 | A kind of device for monitoring laser radiation eyeglass cleannes |
| CN107228390A (en) * | 2017-04-15 | 2017-10-03 | 巴州白云工贸有限责任公司 | A kind of infrared ceramic ceramics, environment protection energy saving stove and preparation method thereof |
| CN207585777U (en) * | 2017-12-29 | 2018-07-06 | 宁波方太厨具有限公司 | A kind of IR parameters measurement device of objective body |
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| CN111256831A (en) | 2020-06-09 |
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