CN210322074U

CN210322074U - Surface-mounted fluorescent optical fiber temperature probe

Info

Publication number: CN210322074U
Application number: CN201921596240.7U
Authority: CN
Inventors: 夏子奂; 吴志伟; 邓晨辉
Original assignee: Shanghai Gnd Etech Co ltd
Current assignee: Shanghai Gnd Etech Co ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-04-14
Anticipated expiration: 2029-09-24

Abstract

The utility model provides a surface mounting formula fluorescence optic fibre temperature probe for level and smooth or the temperature on crooked surface in measuring strong electromagnetic interference environment and the vacuum chamber, include optic fibre (1), fluorescent material (2) that are connected with the one end of optic fibre (1), interface (3) that are connected with the other end of optic fibre (1) at least, the part or whole of optic fibre (1), fluorescent material (2) are wrapped in a flat area (4). The utility model discloses place many thin optic fibre side by side in flat area, reduce probe thickness, flat probe is very easy to paste the dress and is on level and smooth or crooked metal, plastics and ceramic surface. The probe part is high-voltage resistant and corrosion resistant, can work under strong electromagnetic interference and severe chemical environment, the adopted optical probe and fluorescent material have very small geometric dimensions, corresponding heat capacity is also very small, measurement responsivity is high, and miniaturization and integration are facilitated. The utility model discloses simple structure, convenient to use, measurement accuracy have high commercial value.

Description

Surface-mounted fluorescent optical fiber temperature probe

Technical Field

The utility model belongs to the technical field of the optical fiber sensing, a surface mounting formula fluorescence optic fibre temperature probe is related to.

Background

In the existing optical fiber sensing technology field, the fluorescent optical fiber temperature sensor can work under strong electromagnetic interference and severe chemical environment due to the advantages of intrinsic safety, electromagnetic interference resistance, high voltage resistance and corrosion resistance, and becomes the best means for accurately and reliably measuring temperature in industries such as semiconductor, electric power, microwave energy, petroleum, medical treatment and the like.

Generally, a fluorescent fiber optic temperature sensor consists of an optical fiber with a temperature sensitive fluorescent material probe and a temperature transmitter. The optical fiber is usually selected as a light transmission element, a multimode optical fiber with a larger diameter is adopted, although the complexity of a subsequent optical system is favorably reduced, a hole needs to be punched on the wall of a vacuum cavity, a specific optical fiber vacuum penetration device is configured to be used in the vacuum cavity, and the bending radius is larger and is not suitable for a narrow space. The existing spot fiber probe is inserted to measure the temperature in a hole or in a liquid, but it is difficult to obtain an accurate result for measuring the temperature of a solid surface, especially a curved surface.

In the prior art, a technical scheme capable of effectively solving the technical problems does not exist, namely, a surface-mounted fluorescent optical fiber temperature probe does not exist.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a surface-mounted fluorescent optical fiber temperature probe, which is used for measuring the temperature of a flat or curved surface in a strong electromagnetic interference environment and a vacuum chamber and at least comprises one or more optical fibers, one or more fluorescent materials connected with one end of one or more optical fibers and one or more interfaces connected with the other end of one or more optical fibers, wherein;

one or more of the optical fibers, and some or all of one or more of the fluorescent materials are encased in a flat ribbon.

Preferably, the optical fiber connector further comprises a sleeve, the sleeve is arranged between the flat belt and the interface, in an operating state, the optical fiber extends out of the flat belt, and the extending part of the optical fiber is covered by the sleeve and is connected with the interface.

Preferably, a protective sheath is further included, the protective sheath being disposed between the flat band and the sleeve.

Preferably, at least one light shielding sheet is disposed between the flat tape and the fluorescent material.

Preferably, one end of the flat belt close to the fluorescent material is provided with a plurality of branches, each branch at least comprises one fluorescent material and one optical fiber, and the plurality of branches are correspondingly provided with one or more interfaces.

Preferably, in a working state, the interface is at least connected with an upper computer or a transmitter.

Preferably, the flat belt is of an upper layer structure and a lower layer structure and is set to be a structure for accommodating n layers of optical fibers, and n is larger than or equal to 1.

Preferably, in the operating state, the fluorescent material absorbs short-wavelength excitation light and emits long-wavelength fluorescence depending on the temperature, the excitation light is irradiated to the fluorescent material through an optical fiber, and the fluorescence is transmitted to the output interface through the optical fiber.

The utility model discloses a surface mounting formula fluorescence optical fiber temperature probe can be used to measure the temperature of level and smooth or crooked surface in strong electromagnetic interference environment and the vacuum chamber, and its principle has utilized the afterglow life-span of fluorescence only relevant with the temperature is monotonous, just can obtain the temperature of fluorescent material position through the afterglow life-span of detecting fluorescence, compares with current optical fiber temperature probe, the utility model discloses place many thin optic fibre side by side in flat area, reduced probe thickness, flat probe is very easy to paste the dress and is on level and smooth or crooked metal, plastics and ceramic surface, can directly pass through vacuum seal, does not need specific optic fibre vacuum to link up the ware. The probe part is an all-optical system, cannot be interfered by external electromagnetic noise, is high-voltage resistant and corrosion resistant, and can work under strong electromagnetic interference and severe chemical environment. The adopted optical probe and the fluorescent material can be very small in geometric dimension, the corresponding heat capacity is also very small, the measurement responsivity is high, and the miniaturization and the integration are facilitated. The utility model discloses simple structure, convenient to use, measurement accuracy have high commercial value.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic top view of a surface mount fluorescence optical fiber temperature probe according to an embodiment of the present invention;

fig. 2 is a schematic side view of a surface mount fluorescence optical fiber temperature probe according to a first embodiment of the present invention;

fig. 3 shows a schematic top view of a surface mount fluorescence fiber optic temperature probe according to a second embodiment of the present invention; and

fig. 4 shows an exploded view of a surface mount fluorescence fiber optic temperature probe according to a third embodiment of the present invention.

Detailed Description

In order to better clearly show the technical scheme of the present invention, the present invention is further described with reference to the accompanying drawings.

Fig. 1 shows according to the specific embodiment of the present invention, a overlook structure diagram of a surface mount type fluorescence optical fiber temperature probe, fig. 2 shows according to the utility model discloses a first embodiment, a side view structure diagram of a surface mount type fluorescence optical fiber temperature probe, and the skilled person in the art understands, the utility model discloses will combine fig. 1 and fig. 2 to come right the structure of surface mount type fluorescence optical fiber temperature probe is described from overlooking and the angle that looks sideways respectively, for convenient description, the utility model discloses it is common right to combine fig. 1 and fig. 2 to describe the specific embodiment of the utility model, no repeated description is given here.

Specifically, the utility model discloses a surface mounting formula fluorescence optic fibre temperature probe for measure the temperature of leveling or curved surface in strong electromagnetic interference environment and the vacuum chamber, as shown in figure 1 and figure 2, include one or more optic fibre at least, with one or more the one or more fluorescent material that the one end of optic fibre is connected, with one or more the one or more interface that the other end of optic fibre is connected the utility model discloses in, it corresponds a fluorescent material to be provided with many optic fibres preferentially, and in other embodiments, also can set up an optic fibre and correspond a plurality of fluorescent material or many optic fibres, correspondingly, with one or more the fluorescent material that optic fibre is connected with the corresponding connection of one or more interface.

In such an embodiment, in the operating state of the surface mount type fluorescence optical fiber temperature probe, incident excitation light enters the optical fiber from the interface and irradiates the fluorescence material, the fluorescence material emits fluorescence related to temperature, and the fluorescence is transmitted to the upper computer or the transmitter through the optical fiber and the interface, so as to complete fluorescence optical fiber temperature detection, the fluorescence material absorbs short-wavelength excitation light and emits long-wavelength fluorescence related to temperature, and the excitation light and the fluorescence are both irradiated/transmitted to the fluorescence material/output interface through the optical fiber. In such an embodiment, in an operating state, the interface is connected to at least one upper computer or transmitter, and those skilled in the art understand that the interface is a connection port for inputting excitation light and outputting optical signals, one end of the connection port is connected to an optical fiber, and the other end of the connection port is connected to the upper computer or transmitter, and the interface may be an optical fiber interface such as ST, SMA, FC, etc.

Further, one or more of the optical fibers, part or all of one or more of the fluorescent materials are coated in a flat ribbon, in such embodiments, the present invention illustrates a solution in which the optical fibers and part of the fluorescent materials are coated in a flat ribbon, while in other embodiments, one or more of the optical fibers, and all of one or more of the fluorescent materials may be coated in a flat ribbon.

Further, the flat belt is used for protecting and fixing the fluorescent material and the optical fiber, and the material selected by the flat belt is a flexible insulating corrosion-resistant material, preferably a Polyimide (PI) adhesive tape. Specifically, from the structural point of view, the flat belt is two-layer structure about the upper and lower layer structure and is set up as the structure that holds n layer optic fibre, n is more than or equal to 1, and in the utility model discloses, the flat belt comprises upper and lower two-layer, centre gripping fluorescent material and optic fibre, flat belt individual layer thickness <0.1mm, preferably 0.05mm, and further, upper and lower two-layer flat belt all can constitute by one deck or multilayer sticky tape stack, and in a preferred embodiment, the flat belt can be regarded as the vacuum and run through the pass band, directly passes through the sealing washer of vacuum chamber, and the thickness of the flat belt is <0.2mm this moment, and other flat belt thickness that does not pass through the sealing washer then can be thicker, should suitably thicken the flat belt under the radiation environment such as plasma etching environment. The flat belt is of a flexible flat belt-shaped structure and is easy to be attached to flat or curved metal, plastic and ceramic surfaces.

Further, the optical fiber is used as a light transmission element, transmits excitation light from the interface to the fluorescent material, and transmits fluorescence emitted by the fluorescent material to the interface, the optical fiber is formed by arranging a plurality of small-diameter optical fibers in parallel in a flat band, one end of the optical fiber is connected with the fluorescent material, and the other end of the optical fiber is connected with the interface. The diameter of each thin optical fiber is 0.065-0.125 mm, the number of the thin optical fibers is 1-10, and the thin optical fibers can be made of quartz, sapphire and plastic.

Furthermore, the surface-mounted fluorescent optical fiber temperature probe further comprises a sleeve, wherein the sleeve is arranged between the flat belt and the interface, the optical fiber extends out of the flat belt in a working state, and the extending part of the optical fiber is coated by the sleeve and is connected with the interface.

Further, the surface-mounted fluorescence optical fiber temperature probe further comprises a protective sleeve, the protective sleeve is arranged between the flat belt and the sleeve, a protective sleeve is selectively arranged between the flat belt and the sleeve, the protective sleeve plays a role in reinforcing and protecting the joint of the flat belt and the sleeve, and preferably is a stress release protective sleeve.

Fig. 3 shows a schematic top view structure diagram of a surface mount fluorescence optical fiber temperature probe according to a second embodiment of the present invention, as a preferred embodiment of the present invention, fig. 3 discloses a structure with bifurcations, which can be flexibly attached to 3 different positions to measure their temperatures simultaneously, and in other embodiments, the number of bifurcations at the front end of the flat belt and the number of sheaths and interfaces include, but are not limited to, three, which is not described herein.

Furthermore, one end of the flat belt close to the fluorescent material is provided with a plurality of branches, each branch at least comprises one fluorescent material and one optical fiber, the plurality of branches are correspondingly provided with one or more interfaces, the flat belt is divided into three branches at the temperature measuring end, a group of fluorescent materials and optical fibers are arranged in each branched flat belt, each group of optical fibers are connected to the corresponding sheath and the corresponding interface, the number of the sheaths and the interfaces can be one, namely, the plurality of groups of optical fibers pass through the same sheath and are connected to one multipath optical fiber interface.

It is understood by those skilled in the art that at least one light shielding sheet is disposed between the flat belt and the fluorescent material, and specifically, one end of an optical fiber composed of a plurality of thin optical fibers arranged side by side is in contact with the fluorescent material and is disposed on the flat belt, as shown in fig. 4, and a light shielding sheet is optionally disposed on the fluorescent material to prevent external light from exciting the fluorescent material or entering the optical fiber to interfere with the temperature measurement signal.

Further, the shading sheet can be a silicon wafer, a ceramic wafer, a metal sheet, a black glass sheet, a black film or an adhesive tape. Fluorescent material also can bury in the anti-dazzling screen, and in other embodiments, by centre gripping about two anti-dazzling screens, go up flat area and attach on anti-dazzling screen and optic fibre, bond mutually with lower flat area, fixed and protection fluorescent material wherein, anti-dazzling screen and optic fibre, wherein, the thickness of going up flat area and lower flat area can be different, if can set up in the one side that suffers the corruption thicker, this does not influence the technical scheme of the utility model, do not give unnecessary details here.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. A surface-mounted fluorescent optical fiber temperature probe is used for measuring the temperature of a flat or curved surface in a strong electromagnetic interference environment and a vacuum chamber, and is characterized by at least comprising one or more optical fibers (1), one or more fluorescent materials (2) connected with one end of the one or more optical fibers (1), and one or more interfaces (3) connected with the other end of the one or more optical fibers (1), wherein;

one or more of the optical fibers (1), part or all of the fluorescent material(s) (2) are encased in a flat ribbon (4).

2. Fluorescent fiber temperature probe according to claim 1, further comprising a sleeve (5), wherein the sleeve (5) is arranged between the flat ribbon (4) and the interface (3), and wherein in an operational state the optical fiber (1) extends out of the flat ribbon (4), and wherein the protruding part of the optical fiber (1) is covered by the sleeve (5) and connected to the interface (3).

3. Fluorescent fiber optic temperature probe according to claim 2, characterized in that it further comprises a protective sheath (6), said protective sheath (6) being arranged between said flat ribbon (4) and said sleeve (5).

4. Fluorescent fiber optic temperature probe according to claim 1, characterized in that at least one light shield (7) is arranged between the flat strip (4) and the fluorescent material (2).

5. Fluorescent fiber temperature probe according to claim 1, characterized in that the flat ribbon (4) is provided with a plurality of branches near one end of the fluorescent material (2), each branch comprising at least one fluorescent material (2) and one fiber (1), the plurality of branches being provided with one or more interfaces (3) respectively.

6. Fluorescent fiber optic temperature probe according to claim 1, characterized in that in the operating state the interface (3) is connected to at least an upper computer or a transmitter.

7. Fluorescent fiber temperature probe according to claim 1, characterized in that the flat ribbon (4) is of a two-layer structure and is arranged to accommodate n layers of optical fibers, n ≧ 1.

8. Fluorescent fiber optic temperature probe according to claim 1, wherein in an operating state the fluorescent material (2) absorbs short wavelength excitation light and emits temperature dependent long wavelength fluorescence, the excitation light is irradiated to the fluorescent material (2) through the optical fiber (1), and the fluorescence is transmitted to the output interface through the optical fiber (1).