CN211085603U - Infrared optical recognition device - Google Patents
Infrared optical recognition device Download PDFInfo
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- CN211085603U CN211085603U CN201921390857.3U CN201921390857U CN211085603U CN 211085603 U CN211085603 U CN 211085603U CN 201921390857 U CN201921390857 U CN 201921390857U CN 211085603 U CN211085603 U CN 211085603U
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- optical
- infrared
- optical element
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- circuit board
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Abstract
The utility model discloses an infrared optical identification device, it includes the base, installs at inside printed circuit board, the cover of base and establishes optical element and sleeve pipe on the base, the last optical interface that is equipped with of optical element, printed circuit board sends infrared light and shines on the optical element, optical element's optical interface with one of them some light reflection extremely on the printed circuit board, optical interface includes first plane of reflection and second plane of reflection, the contained angle scope between first plane of reflection and the second plane of reflection is 60 degrees to 120 degrees, the gland is connected with optical element, the sleeve with base looks fixed connection. The utility model discloses whether the detection that changes appears in the realization to the state of determinand, simple structure, convenient operation and safety.
Description
Technical Field
The invention relates to a liquid or fluid detection device, in particular to an infrared optical identification device.
Background
With the rapid growth of economy and the rapid development of chemical industry in China, the China has become a large country for producing and using chemical products, the variety and the number of dangerous chemicals are increasing day by day, and the method is widely applied to various fields of economic development in China. However, in chemical production, organic liquid hazardous chemical substances are easy to leak, and flammable, explosive or toxic and harmful gases volatilized by the organic liquid hazardous chemical substances can cause serious accidents such as fire, explosion, poisoning and the like, so that the hazardous chemical substances need to be detected; in the field of hazardous chemical delivery, the overflow of hazardous chemical transport tank cars, the overflow of loading arms on oil depots and the leakage of gas stations can cause serious harm and uncontrollable performance.
Therefore, it is necessary to provide a safe and reliable infrared optical identification device for monitoring the production, transportation and other processes of hazardous chemical substances, and also for detecting the abnormality such as leakage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide an infrared optical identification device, through the comparison to the light quantity change, detect out whether the state of determinand changes.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an infrared optical identification device, its includes the base, install at the inside printed circuit board of base, establish optical element and sleeve pipe on the base at the cover, the last optical interface that is equipped with of optical element, the printed circuit board sends infrared light and shines on the optical element, optical element's optical interface with one of them some light reflection extremely on the printed circuit board.
Preferably, the optical interface comprises a first reflective surface and a second reflective surface, and an included angle between the first reflective surface and the second reflective surface ranges from 60 degrees to 120 degrees.
Preferably, the infrared light is reflected twice on the optical interface to the printed wiring board.
Preferably, the printed circuit board has a through hole, and a locking fastener is arranged in the through hole and fixes the printed circuit board on the base.
Preferably, the optical element further comprises a gland for limiting the position of the optical element, and one side of the gland is connected with the optical element and the other side of the gland is connected with the sleeve.
Preferably, an end face corresponding to the optical interface is formed on one side of the pressing cover, and an end face corresponding to the optical interface is also formed on the base.
Preferably, the base has an end portion and an extension portion connected to the end portion, and the printed wiring board is fixed to the extension portion.
Preferably, the inner side of the sleeve is provided with an internal thread, the outer side of the extension part is provided with an external thread, and the sleeve and the base are fixedly connected through threads.
Preferably, the optical element is a transparent material or a non-transparent material or a partially infrared-transparent material.
Preferably, the device further comprises a sealing ring, and adjacent elements are connected in a sealing mode through the sealing ring.
The utility model has the advantages that:
1. The utility model discloses an infrared optical identification device, the infrared light that sends through printed wiring board reflects to the printed wiring board on optical element to analysis printed wiring board obtains the size of reflection light volume, realizes the detection whether change appears to the state of determinand, and the testing process is swift convenient, is particularly useful for the production of dangerization article, the seepage detection in the transportation.
2. The utility model discloses simple structure, convenient operation and safety.
Drawings
Fig. 1 is a schematic structural diagram of an infrared optical recognition device according to the present invention;
Fig. 2 is an exploded view of an infrared optical recognition device according to the present invention;
Fig. 3 is a schematic structural diagram of an optical element of an infrared optical recognition device according to the present invention.
Reference numerals: 1. base, 11, end, 12, extension, 2, printed circuit board, 21, through-hole, 3, optical element, 31 optical interface, 32, first reflecting surface, 33, second reflecting surface, 4 gland, 5, sleeve, 6, sealing ring.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
Referring to fig. 1 and 2, the present invention provides an infrared optical recognition device, which comprises a base 1, a printed circuit board 2 mounted inside the base 1, and an optical element 3, a cover 4 and a sleeve 5 sleeved on the base 1, wherein the optical element 3 is connected to the cover 4, the cover 4 is connected to the sleeve 5, and the base 1 has a terminal 11 and an extension 12 connected to the terminal 11.
The printed circuit board 2 with the base 1 is connected and is installed on the extension 12, the printed circuit board 2 has a through hole 21, the through hole 21 is used for installing a locking fastener (not shown), the locking fastener passes the through hole 21 fixes the printed circuit board 2 on the extension 12, of course, the locking fastener can be set according to actual conditions, so that the printed circuit board 2 can be fixed on the extension 12, for example, the two are fixed by bolts. The printed circuit board 2 is used for emitting and receiving infrared light and analyzing the size of the received light.
As shown in fig. 3, the optical element 3 is sleeved on the base 1, and the other end of the optical element is pressed and fixed by the pressing cover 3. The optical interface 31 is arranged on the optical element 3, the optical interface 31 includes a first reflecting surface 32 and a second reflecting surface 33, an included angle between the first reflecting surface 32 and the second reflecting surface 33 ranges from 60 degrees to 120 degrees, and is used for reflecting or refracting light, and the optical interface 31 can generate different reflected and refracted light when being located in different media. The end of the base 1 connected to the optical element 3 is also provided with an end face corresponding to the shape of the optical interface 31.
The optical element 3 may be a transparent material, a non-transparent material or other infrared transparent material, depending on the application environment and the medium.
The gland 4 is used for limiting the position of the optical element 3 and is arranged between the optical element 3 and the sleeve 5, one side of the gland 4 is connected with the optical element 3 and is formed with an end face corresponding to the optical interface 31, and the opposite side is formed into a circular ring structure so as to be suitable for realizing complete sealing installation with the sleeve 5. The gland 4 is arranged to prevent the optical element 3 from being displaced, so that the path of infrared light is affected, and the recognition result of the infrared optical recognition device is affected.
The sleeve 5 is sleeved on the gland 4 and used for protecting elements in the infrared optical identification device and leading out a lead of the printed circuit board 2, in the embodiment, the sleeve 5 is cylindrical, and the shape and the length of the sleeve 5 are determined according to actual conditions so as to adapt to normal operation and protection of the device. The inner side of the sleeve 5 is provided with an internal thread, the outer side of the extension end 12 is provided with an external thread, and the sleeve 5 is fixedly connected with the base 1 through the thread. Certainly, the fixing mode can also adopt a buckle and other modes, and the buckle and the other modes can be fixedly connected.
The gland 4 and the sleeve 5 can also be integrated into a whole, and the integrated structure is also sleeved on the base 1 and fixed on the base 1.
The base 1 and the optical element 3, the optical element 3 and the gland 4, and the gland 4 and the sleeve 5 are connected by a sealing ring 6, and sealing is realized, and the shape of the sealing ring 6 is determined according to the shape of the element. In this embodiment, the sealing ring 6 is an O-ring to realize sealing, and of course, the sealing ring 6 is not limited to the O-ring, and it is sufficient to realize sealing between elements.
The infrared optical recognition device is placed in an object to be detected, infrared light emitted by the printed circuit board 2 is reflected and refracted through the optical interface 31, if the optical element 3 enters another medium from one medium, the optical interface 31 changes, so that the quantity of light refracted out changes, the quantity of light received by the printed circuit board 2 through reflection changes, the electric signal of the printed circuit board 2 changes correspondingly, the state of the object to be detected changes finally, and if the state of the object to be detected in which the optical element 3 is located does not change, the final electric signal of the printed circuit board 2 does not change correspondingly. In this embodiment, the infrared light beam is reflected and refracted twice at the optical interface 31, and then returns to the printed circuit board 2 after being reflected twice.
The utility model discloses an infrared optical identification device's light path does: firstly, infrared optical identification is placed in an object to be detected, at the moment, the printed circuit board 2 emits infrared light, the infrared light irradiates the optical element 3, after twice reflection and twice refraction of the optical interface 31, a part of the infrared light is refracted out of the optical element 3, the light of other infrared light after twice reflection returns to the printed circuit board 2, and then the printed circuit board 2 detects whether the state of the object to be detected changes or not according to the change of the received light quantity.
The utility model discloses an infrared light is through optical interface 31's reflection and refraction light, and then through the analysis to printed wiring board 2 received light quantity size, has realized the detection whether to change the state of different materials, simple structure, convenient operation and safety.
The technical contents and features of the present invention have been disclosed as above, however, those skilled in the art can still make various substitutions and modifications based on the teaching and disclosure of the present invention without departing from the spirit of the present invention, therefore, the protection scope of the present invention should not be limited to the contents disclosed in the embodiments, but should include various substitutions and modifications without departing from the present invention, and should be covered by the claims of the present patent application.
Claims (10)
1. The utility model provides an infrared optical identification device, its characterized in that includes the base, installs the inside printed circuit board of base, overlaps optical element and the sleeve pipe of establishing on the base, the last optical interface that is equipped with of optical element, the printed circuit board sends infrared light and shines on the optical element, optical element's optical interface with one of them some light reflection extremely on the printed circuit board.
2. An infrared optical recognition device according to claim 1 wherein the optical interface comprises a first reflective surface and a second reflective surface, the first reflective surface and the second reflective surface having an included angle therebetween in the range of 60 degrees to 120 degrees.
3. An infrared optical recognition device according to claim 1 wherein the infrared light undergoes two reflections at the optical interface onto the printed wiring board.
4. The infrared optical recognition device of claim 1, wherein said printed wiring board has a through hole, said through hole having a locking fastener received therein, said locking fastener securing said printed wiring board to said base.
5. An infrared optical recognition apparatus according to claim 1, further comprising a pressing cover for restricting a position of the optical element, the pressing cover being connected to the optical element at one side and to the sleeve at the other side.
6. An infrared optical recognition device according to claim 5 wherein an end face corresponding to the optical interface is formed on one side of the cover, and an end face corresponding to the optical interface is also formed on the base.
7. An infrared optical recognition apparatus according to claim 1 wherein said base has an end portion and an extension portion connected to the end portion, said printed wiring board being fixed to said extension portion.
8. The infrared optical identification device as defined in claim 7, wherein the sleeve has an inner thread on an inner side thereof, and an outer thread on an outer side thereof, and the sleeve and the base are fixedly connected by the thread.
9. An infrared optical recognition device according to claim 1 wherein the optical element is a transparent material or a non-transparent material or a partially infrared-transparent material.
10. An infrared optical recognition apparatus according to any one of claims 1 to 9, further comprising a sealing ring, wherein adjacent elements are sealingly connected to each other by the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921390857.3U CN211085603U (en) | 2019-08-26 | 2019-08-26 | Infrared optical recognition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921390857.3U CN211085603U (en) | 2019-08-26 | 2019-08-26 | Infrared optical recognition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211085603U true CN211085603U (en) | 2020-07-24 |
Family
ID=71622868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921390857.3U Active CN211085603U (en) | 2019-08-26 | 2019-08-26 | Infrared optical recognition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211085603U (en) |
-
2019
- 2019-08-26 CN CN201921390857.3U patent/CN211085603U/en active Active
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