CN111486966B - Diaphragm assembly and infrared sensor temperature measuring device - Google Patents
Diaphragm assembly and infrared sensor temperature measuring device Download PDFInfo
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- CN111486966B CN111486966B CN202010376637.6A CN202010376637A CN111486966B CN 111486966 B CN111486966 B CN 111486966B CN 202010376637 A CN202010376637 A CN 202010376637A CN 111486966 B CN111486966 B CN 111486966B
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- diaphragm
- shell
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- light
- rotating part
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000009529 body temperature measurement Methods 0.000 claims description 5
- 108090000565 Capsid Proteins Proteins 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 235000019994 cava Nutrition 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 description 2
- 210000001061 forehead Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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
-
- 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
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
-
- 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
- G01J5/08—Optical arrangements
- G01J5/0803—Arrangements for time-dependent attenuation of radiation signals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a diaphragm assembly and an infrared sensor temperature measuring device, wherein the diaphragm assembly comprises a shell and a diaphragm accommodated in the shell, the shell is provided with a central hole penetrating through the front surface and the rear surface of the shell and an accommodating cavity formed by inwards recessing the side edge of the shell, the accommodating cavity is communicated with the central hole, the diaphragm is accommodated in the accommodating cavity, the diaphragm comprises a rotating part and a light hole penetrating through the front surface and the rear surface of the rotating part, and the light hole is in a strip shape. The interference of direct sunlight can be avoided, the incident angle of light does not need to be reduced, the high-precision measurement requirement is ensured, and the device has the advantages of low cost, convenience in adjustment, flexibility and the like.
Description
Technical Field
The invention relates to a diaphragm assembly and an infrared sensor temperature measuring device.
Background
The infrared sensor is used as a non-contact temperature measuring sensor. Has wide application in civil and industrial fields.
However, when the device is used outdoors, the sunlight irradiation influences the measurement result, and the measurement result is distorted. To make the measurement result accurate, interference of sunlight must be excluded. Generally, a method for eliminating interference of sunlight is to add a diaphragm in front of a lens to limit an incident angle, so as to avoid interference of sunlight, but because the incident direction and angle of sunlight in a day are constantly changed, if the clear aperture of the added diaphragm is too large, sunlight cannot be guaranteed to completely prevent from entering an infrared sensor, and if the clear aperture is too small, the light receiving angle of the infrared sensor is reduced, so that the measurement range and precision are influenced. Therefore, the common diaphragm cannot limit the interference of sunlight at any time in one day, does not influence the measurement range and precision, and cannot solve the problem well.
Therefore, it is necessary to provide a new diaphragm assembly and a temperature sensor assembly to solve the above problems.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a diaphragm assembly and an infrared sensor temperature measuring device, which are used for improving the temperature measuring precision.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a diaphragm subassembly, its include the shell and accept in the diaphragm of shell, the shell has the centre bore that runs through its front and back surface and from the chamber is acceptd to its side inside sunken formation, accept the chamber with the centre bore communicates with each other, the diaphragm accept the chamber, the diaphragm includes the rotating part and runs through the light trap on surface around the rotating part, the light trap is rectangular shape.
The diaphragm still include certainly the side of rotating part outwards extends and forms the handle, accept the chamber and outwards extend and run through two side surfaces of shell form the breach, the handle accept in the breach.
The light hole comprises a cuboid structure located in the middle area of the light hole and semicircular structures located at two ends of the cuboid structure.
The arc limit of semicircular structure is close to the edge of rotating part, and the maximum distance between the semicircular arc limit at both ends is less than the diameter of centre bore, the diameter of semicircular structure is far less than the diameter of centre bore, the diameter of semicircular structure does the length half of light trap.
The shell comprises a front shell and a rear shell arranged behind the front shell, wherein the rear surface of the front shell is inwards sunken to form a groove, and the front surface of the rear shell and the groove jointly enclose to form the containing cavity.
The diaphragm with be provided with the gasket between the procapsid, be provided with the accepting groove in the procapsid, the gasket is fixed in the accepting groove.
The length of the light-transmitting hole is about twice the width.
In order to achieve the purpose, the invention also adopts the following technical scheme: the utility model provides an infrared sensor temperature measuring device, its includes infrared sensor and diaphragm subassembly, diaphragm subassembly equipment is in the infrared sensor front end that is used for the temperature measurement, the diaphragm subassembly include the shell and accept in the diaphragm of shell, the shell has the centre bore that runs through its front and back surface and from the inside sunken chamber of accepting that forms of its side, accept the chamber with the centre bore communicates with each other, the diaphragm accept in accept the chamber, the diaphragm includes the rotating part and runs through the light trap on surface around the rotating part, the light trap is rectangular shape.
The diaphragm still includes certainly the side of rotating part outwards extends and forms the handle, it outwards extends the run-through to accept the chamber two side surfaces of shell form the breach, the handle accept in the breach.
The light hole comprises a cuboid structure located in the middle area of the light hole and semicircular structures located at two ends of the cuboid structure.
Compared with the prior art, the diaphragm assembly and the infrared sensor temperature measuring device have the beneficial effects that: in application, interference of direct sunlight is avoided, the incident angle of light rays is not required to be reduced, the high-precision measurement requirement is guaranteed, and the device has the advantages of low cost, convenience in adjustment, flexibility and the like.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a cross-sectional view of a diaphragm assembly according to the present invention;
fig. 2 is a schematic view of the diaphragm assembly of fig. 1 in a first state.
Fig. 3 is a schematic view of another state of the diaphragm assembly shown in fig. 2.
Fig. 4 is a front view of a front housing of the diaphragm assembly shown in fig. 1.
Fig. 5 is a front view of the diaphragm assembly shown in fig. 1.
FIG. 6 is a schematic structural diagram of the diaphragm assembly shown in FIG. 1 mounted on a temperature measuring assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention is a diaphragm assembly, which includes a housing 1 and a diaphragm 2 accommodated in the housing 1, wherein the housing 1 has a central hole 101 penetrating through front and rear surfaces thereof and an accommodating cavity 102 formed by recessing a side edge thereof, the accommodating cavity 102 is communicated with the central hole 101, and the accommodating cavity 102 extends outward to penetrate through two side surfaces of the housing 1 to form a notch 103. The diaphragm 2 is accommodated in the accommodating cavity 102, the diaphragm 2 includes a rotating portion 21 and a light-transmitting hole 22 penetrating through the front and rear surfaces of the rotating portion 21, the light-transmitting hole 22 is in a strip shape, and the length of the light-transmitting hole 22 is about twice the width. The diaphragm 2 further comprises a handle 23 extending outwardly from a side edge of the rotary part 21.
In the present embodiment, the housing 1 includes a front case 11 and a rear case 12 mounted behind the front case 11, and the front case 11 and the rear case 12 jointly enclose to form a housing cavity 102. The accommodating cavity 102 is a concave groove formed by the rear surface of the front housing 11, the front surface of the rear housing 12 and the concave groove jointly enclose the accommodating cavity 102, and the accommodating cavity 102 is of a circular structure. The front shell 11 and the rear shell 12 are provided with through holes which are on the same axis, and the through holes of the front shell 11 and the rear shell 12 jointly form a central hole 101. The front case 11 and the rear case 12 are provided with through holes, and fixed to each other by a fixing member.
The rotating portion 21 of the diaphragm 2 is circular and is accommodated in the accommodating cavity 102, the handle 23 is accommodated in the notch 103, and the handle 23 is applied with external force to drive the rotating portion 21 to rotate in the accommodating cavity 102. The handle 23 extends outside the housing 1.
A gasket 3 is arranged between the diaphragm 2 and the front housing 11, a containing groove 112 is arranged in the front housing 11, the gasket 3 is fixed in the containing groove 112 of the front housing 11, and the gasket 3 also has a through hole. The through hole is coaxial with the through holes of the front case 11 and the rear case 12.
The light hole 22 of the diaphragm 2 is a long strip structure, which includes a rectangular parallelepiped structure located in the middle region thereof and semicircular structures located at the two ends of the rectangular parallelepiped structure. The arc limit of semicircular structure is close to the edge of rotating part 21, and the maximum distance between the semi-circular arc limit at both ends is slightly less than the diameter of centre bore 101, and semi-circular diameter is far less than the diameter of centre bore 101, and semi-circular diameter is the length half of light trap 22. For example: the diameter of the central hole 101 is 5mm, the diameter of the light hole 22 is 4mm, and the diameter of the semicircle is 2mm.
The light-transmitting hole 22 of the diaphragm 2 of the present invention is structurally distinct from the prior art light-transmitting holes, and is used in devices that are sensitive to temperature and light. The light hole 22 in the prior art is a circular structure, and the aperture thereof can only enlarge or reduce the brightness of the adjusting light according to the requirement.
Referring to fig. 6, the diaphragm assembly of the present invention employs an infrared sensor temperature measuring device, the infrared sensor temperature measuring device includes an infrared sensor and a diaphragm assembly, the diaphragm assembly is assembled at the front end of the infrared sensor for measuring temperature, and the housing 1 is fixed to the housing 41 of the infrared sensor by screws. And adjusting the acquired light ray angle through the diaphragm assembly.
The diaphragm in the prior art is a light hole with a circular structure, the aperture of the light hole can be changed in size and changed in size, the light hole can be always subjected to a light receiving angle of 360 degrees, the rising of each person is different, when the temperature is measured, a temperature area or a position (such as the forehead) to be detected needs to be obtained by adjusting the size of the light hole, if the light transmitting aperture of the added diaphragm is too large, sunlight cannot be completely prevented from entering the infrared sensor, if the light transmitting aperture is too small, the light receiving angle of the infrared sensor can be reduced, the light receiving angle can exceed the area range of the temperature measurement, and the temperature measurement precision is reduced.
The diaphragm assembly of the invention is applied to human body temperature measurement, because the human body is approximately in a cuboid structure, the height of the human body is far greater than the width of the human body, and the shape of the light hole 22 is set according to the structure of the human body. During normal measurement, when a human body stands in front of the temperature measuring equipment, the human body can shield a light source (or a heat source) which appears occasionally in the nature, and the forehead of the human body can be subjected to temperature acquisition through the light transmission hole 22 to carry out normal measurement; when the incident angles of the sunlight at different time points change along with the lapse of time, if the diaphragm is not rotated, the light transmission hole 22 of the diaphragm can easily obtain the heat source from the sunlight, and then the diaphragm needs to be rotated.
Therefore, the invention can meet the measurement of people with different heights on the premise of not changing the size of the whole light receiving angle of the diaphragm, namely not reducing the range of the temperature measuring area, and can reduce the influence of an external heat source by rotating the diaphragm.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a diaphragm subassembly, its include the shell and accept in the diaphragm of shell, the shell has the centre bore that runs through its front and back surface and inwards caves in the chamber of acceping that forms from its side, accept the chamber with the centre bore communicates with each other, its characterized in that: the diaphragm is accommodated in the accommodating cavity and comprises a rotating part and light holes penetrating through the front surface and the rear surface of the rotating part, the light holes are in a strip shape, the rotating part is of a circular structure, is accommodated in the accommodating cavity, and prevents sunlight from entering the rear part of the diaphragm through rotating the diaphragm.
2. The diaphragm assembly of claim 1, wherein: the diaphragm still include certainly the side of rotating part outwards extends and forms the handle, accept the chamber and outwards extend and run through two side surfaces of shell form the breach, the handle accept in the breach.
3. The diaphragm assembly of claim 1, wherein: the light hole comprises a cuboid structure located in the middle area of the light hole and semicircular structures located at two ends of the cuboid structure.
4. The diaphragm assembly of claim 3, wherein: the arc limit of semicircular structure is close to the edge of rotating part, and the maximum distance between the semicircular arc limit at both ends is less than the diameter of centre bore, the diameter of semicircular structure is far less than the diameter of centre bore, the diameter of semicircular structure does the length half of light trap.
5. The diaphragm assembly of claim 1, wherein: the shell comprises a front shell and a rear shell installed behind the front shell, wherein the rear surface of the front shell is inwards recessed to form a groove, and the front surface of the rear shell and the groove jointly enclose to form the containing cavity.
6. The diaphragm assembly of claim 5, wherein: the diaphragm with be provided with the gasket between the procapsid, be provided with the accepting groove in the procapsid, the gasket is fixed in the accepting groove.
7. The diaphragm assembly of claim 1, wherein: the length of the light-transmitting hole is about twice the width.
8. The utility model provides an infrared sensor temperature measuring device, its characterized in that, it includes infrared sensor and diaphragm subassembly, and diaphragm subassembly equipment is in the infrared sensor front end that is used for the temperature measurement, the diaphragm subassembly include the shell and accept in the diaphragm of shell, the shell has the centre bore that runs through its front and back surface and from the chamber of acceping of its inside sunken formation of side, accept the chamber with the centre bore communicates with each other, the diaphragm accept in accept the chamber, the diaphragm includes the rotating part and runs through the light trap on surface around the rotating part, the light trap is rectangular shape, the rotating part is circular structure, it accept in accept the chamber, through rotating the diaphragm prevents the sunlight to get into the diaphragm rear.
9. The infrared sensor temperature measuring device of claim 8, wherein: the diaphragm still includes certainly the side of rotating part outwards extends and forms the handle, it outwards extends the run-through to accept the chamber two side surfaces of shell form the breach, the handle accept in the breach.
10. The infrared sensor temperature measuring device of claim 8, wherein: the light hole comprises a cuboid structure located in the middle area of the light hole and semicircular structures located at two ends of the cuboid structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010376637.6A CN111486966B (en) | 2020-05-07 | 2020-05-07 | Diaphragm assembly and infrared sensor temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010376637.6A CN111486966B (en) | 2020-05-07 | 2020-05-07 | Diaphragm assembly and infrared sensor temperature measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN111486966A CN111486966A (en) | 2020-08-04 |
| CN111486966B true CN111486966B (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010376637.6A Active CN111486966B (en) | 2020-05-07 | 2020-05-07 | Diaphragm assembly and infrared sensor temperature measuring device |
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| CN (1) | CN111486966B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009081649A (en) * | 2007-09-26 | 2009-04-16 | Sumitomo Electric Ind Ltd | Imaging apparatus, and lens abnormality diagnosis system |
| CN201837805U (en) * | 2010-07-13 | 2011-05-18 | 世大光电(深圳)有限公司 | Light inlet application system and light ring thereof |
| CN106773018A (en) * | 2015-11-23 | 2017-05-31 | 中国科学院大连化学物理研究所 | A kind of infrared aperture-variable diaphragm |
| CN106969841A (en) * | 2016-12-14 | 2017-07-21 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of Source size effect restraining device based on radiation thermometer |
| CN109143724A (en) * | 2018-11-08 | 2019-01-04 | 山东理工大学 | A kind of adjustable aperture device |
| CN110231093A (en) * | 2019-07-02 | 2019-09-13 | 电子科技大学 | A kind of infrared radiation temperature meter reducing meter background radiation |
| CN209858848U (en) * | 2019-05-20 | 2019-12-27 | 武汉侨邑激光科技有限公司 | Multi-aperture rotatable diaphragm |
| CN110737147A (en) * | 2018-07-20 | 2020-01-31 | 三星电机株式会社 | Aperture diaphragm module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3802870B2 (en) * | 2002-12-20 | 2006-07-26 | 株式会社タムロン | Light control device |
| CN103217222B (en) * | 2013-04-10 | 2015-07-01 | 中国船舶重工集团公司第七一七研究所 | Iris wave-beam device capable of simulating infrared target |
-
2020
- 2020-05-07 CN CN202010376637.6A patent/CN111486966B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009081649A (en) * | 2007-09-26 | 2009-04-16 | Sumitomo Electric Ind Ltd | Imaging apparatus, and lens abnormality diagnosis system |
| CN201837805U (en) * | 2010-07-13 | 2011-05-18 | 世大光电(深圳)有限公司 | Light inlet application system and light ring thereof |
| CN106773018A (en) * | 2015-11-23 | 2017-05-31 | 中国科学院大连化学物理研究所 | A kind of infrared aperture-variable diaphragm |
| CN106969841A (en) * | 2016-12-14 | 2017-07-21 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of Source size effect restraining device based on radiation thermometer |
| CN110737147A (en) * | 2018-07-20 | 2020-01-31 | 三星电机株式会社 | Aperture diaphragm module |
| CN109143724A (en) * | 2018-11-08 | 2019-01-04 | 山东理工大学 | A kind of adjustable aperture device |
| CN209858848U (en) * | 2019-05-20 | 2019-12-27 | 武汉侨邑激光科技有限公司 | Multi-aperture rotatable diaphragm |
| CN110231093A (en) * | 2019-07-02 | 2019-09-13 | 电子科技大学 | A kind of infrared radiation temperature meter reducing meter background radiation |
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| CN111486966A (en) | 2020-08-04 |
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