阅读说明：本技术 高灵敏度的气体温度检测装置 (High-sensitivity gas temperature detection device ) 是由 李国强 于 2021-08-24 设计创作，主要内容包括：本申请涉及高灵敏度的气体温度检测装置,具体而言,涉及温度检测领域。本申请提供的高灵敏度的气体温度检测装置,装置包括：壳体、光源、探测器、光子材料层、膨胀部和支撑部；当需要对待测气体温度进行检测的时候,将待测气体通过该第二腔体的进气口进入该第二腔体内部,由于该膨胀部和支撑部均设置在该第一腔体靠近该第二腔体的一侧,则在温度的作用下,该膨胀部发生膨胀,并将该膨胀部顶部的光子材料层顶起,使得该光子材料层发生倾斜,进而使得光源产生的光信号通过该光子材料层后传播到该探测器上的光信号的光谱发生改变,根据该探测器检测的光信号的光谱的变化情况与待测气体温度的对应关系,得到待测气体温度。(The application relates to a gas temperature detection device of high sensitivity, particularly, relates to the temperature detection field. The application provides a gas temperature detection device of high sensitivity, the device includes: the device comprises a shell, a light source, a detector, a photon material layer, an expansion part and a supporting part; when the gas temperature to be measured needs to be detected, the gas to be measured enters the second cavity through the gas inlet of the second cavity, because the expansion part and the supporting part are arranged on one side of the first cavity close to the second cavity, under the action of temperature, the expansion part expands, and jacks up the photon material layer at the top of the expansion part, so that the photon material layer inclines, further, the spectrum of the optical signal generated by the light source is transmitted to the detector through the photon material layer, and the corresponding relation between the change condition of the spectrum of the optical signal detected by the detector and the gas temperature to be measured is obtained.)

1. A high sensitivity gas temperature detection apparatus, the apparatus comprising: the device comprises a shell, a light source, a detector, a photon material layer, an expansion part and a supporting part; the shell is internally divided into a first cavity and a second cavity, the light source, the detector, the photon material layer, the expansion part and the supporting part are arranged in the first cavity, the light source is arranged on the side wall of the shell far away from the top end of the second cavity, the detector is arranged on the side wall of the shell at a position opposite to the light source, the expansion part and the supporting part are respectively arranged at two ends of the first cavity close to the second cavity, the expansion part is filled with thermal expansion materials, a heat insulation layer is arranged at one side of the supporting part close to the second cavity, the supporting part is made of elastic materials, the photon material layer is arranged between the light source and the expansion part as well as the second cavity, and the photon material layer is formed by periodically arranging two photon materials with high reflectivity, and the second cavity is provided with an air inlet and an air outlet at positions close to the side wall of the shell respectively.

2. The highly sensitive gas temperature detection apparatus according to claim 1, wherein a light-cooling film is provided on an outer wall of the support portion.

3. The high-sensitivity gas temperature detection device according to claim 1 or 2, wherein the material of the photonic material layer is silicon dioxide and polymethylpentene.

4. The highly sensitive gas temperature detection device according to claim 3, wherein the shape of the expansion portion is an upright trapezoidal shape.

5. The highly sensitive gas temperature detection device according to claim 4, further comprising a heat absorption transfer portion provided on a side of the expansion portion close to the second chamber.

6. The highly sensitive gas temperature detection device according to claim 5, further comprising a heat spreading portion.

7. The high-sensitivity gas temperature detection device according to claim 6, further comprising a first metal portion and a second metal portion, wherein the first metal portion and the second metal portion are respectively disposed at two ends of the photonic material layer on a side away from the second cavity.

8. The highly sensitive gas temperature detection device according to claim 7, wherein a material of the first metal portion and the second metal portion is a noble metal material.

Technical Field

The application relates to the field of temperature detection, in particular to a high-sensitivity gas temperature detection device.

Background

A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. The measurement method can be divided into a contact type and a non-contact type, and the measurement method can be divided into a thermal resistor and a thermocouple according to the characteristics of sensor materials and electronic elements.

The detection principle of the temperature sensor of the thermal resistor is that the resistance value of metal changes along with the temperature change, the temperature is measured by measuring the resistance and the relation between the resistance and the temperature, and the thermocouple temperature sensor is composed of two metal wires made of different materials and welded together at the tail end. The temperature of the heating point can be accurately known by measuring the ambient temperature of the unheated part.

Because thermal resistance temperature sensor and thermocouple temperature sensor all need to heat through the metal with temperature sensor inside, the metal absorbs certain heat at the in-process of heating for this thermal resistance temperature sensor and thermocouple temperature sensor have great error to the measurement of temperature.

Disclosure of Invention

The invention aims to provide a high-sensitivity gas temperature detection device aiming at the defects in the prior art, and aims to solve the problem that the measurement of the thermal resistance temperature sensor and the thermocouple temperature sensor has large errors due to the fact that metal in the temperature sensor needs to be heated and absorbs certain heat in the heating process.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, the present application provides a high sensitivity gas temperature detection device, the device comprising: the device comprises a shell, a light source, a detector, a photon material layer, an expansion part and a supporting part; the internal portion of casing separates to first cavity and second cavity, the inside light source that is provided with of first cavity, the detector, the photon material layer, inflation portion and supporting part, the top of second cavity is kept away from at the lateral wall of casing to the light source setting, the detector sets up the position relative with the light source setting position on the lateral wall of casing, inflation portion and supporting part set up respectively at the both ends that the first cavity is close to the second cavity, and the inside packing of inflation portion has the thermal expansion material, one side that the supporting part is close to the second cavity is provided with the insulating layer, the material of supporting part is elastic material, the photon material layer sets up between light source and inflation portion and second cavity, and the photon material layer forms for two kinds of photon material cycle settings of high reflectivity, the position that the second cavity is close to the casing lateral wall is provided with air inlet and gas outlet respectively.

Optionally, a light cooling film is disposed on an outer wall of the support portion.

Optionally, the material of the photonic material layer is silicon dioxide and polymethylpentene.

Optionally, the shape of the expansion portion is a right trapezoid.

Optionally, the device further comprises a heat absorption transfer portion, and the heat absorption transfer portion is arranged on one side of the expansion portion close to the second cavity.

Optionally, the device further comprises a heat spreading portion, the heat spreading portion being a plurality of tubular structures.

Optionally, the device further includes a first metal portion and a second metal portion, and the first metal portion and the second metal portion are respectively disposed at two ends of the photonic material layer on a side away from the second cavity.

Optionally, the material of the first metal part and the second metal part is a noble metal material.

The invention has the beneficial effects that:

the application provides a gas temperature detection device of high sensitivity, the device includes: the device comprises a shell, a light source, a detector, a photon material layer, an expansion part and a supporting part; the shell is divided into a first cavity and a second cavity, a light source, a detector, a photon material layer, an expansion part and a support part are arranged in the first cavity, the light source is arranged at the top end of the side wall of the shell far away from the second cavity, the detector is arranged at the position, opposite to the light source, on the side wall of the shell, the expansion part and the support part are respectively arranged at two ends of the first cavity close to the second cavity, thermal expansion materials are filled in the expansion part, a heat insulation layer is arranged at one side of the support part close to the second cavity, the support part is made of elastic materials, the photon material layer is arranged between the light source and the expansion part and between the light source and the second cavity, the photon material layer is formed by periodically arranging two photon materials with high reflectivity, an air inlet and an air outlet are respectively arranged at the position of the second cavity close to the side wall of the shell, the photon material can be reflected at the interface when passing through different media, and the reflectivity can be related to the refractive index between the media, the photon material layer is formed by periodically arranging two photon materials with high reflectivity, when an optical signal generated by the light source passes through the photon material layers with different refractive indexes, the optical signal is reflected for multiple times through the plurality of layers of photon materials, the optical signals reflected by each layer generate constructive interference due to the change of a phase angle and are combined together, so that the detector detects a strong reflected optical signal, when the temperature of the gas to be detected is required to be detected, the gas to be detected enters the second cavity through the gas inlet of the second cavity, because the expansion part and the supporting part are both arranged at one side of the first cavity close to the second cavity, the expansion part expands under the action of temperature and jacks up the photon material layer at the top of the expansion part, and because the material of the supporting part is an elastic material, the height of one side of the expansion part arranged at the bottom of the photon material layer rises, the height of the other end of the optical signal detector is reduced, so that the photonic material layer is inclined, the included angle between the incident optical signal of the light source and the photonic material layer is changed, the spectrum of the optical signal which is generated by the light source and reflected to the detector after passing through the photonic material layer is changed, the change condition of the spectrum of the optical signal is detected by the detector, and the temperature of the gas to be detected is obtained according to the corresponding relation between the change condition of the spectrum of the optical signal detected by the detector and the temperature of the gas to be detected.

Drawings

Fig. 1 is a schematic structural diagram of a high-sensitivity temperature detection device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another high-sensitivity temperature detection device according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another high-sensitivity temperature detection device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another high-sensitivity temperature detection device according to an embodiment of the present invention.

Icon: 10-a housing; 11-a first cavity; 12-a second cavity; 13-an air inlet; 14-an air outlet; 20-a light source; 30-a detector; 40-a layer of photonic material; 50-an expansion part; 51-heat absorption transfer portion; 52-heat spreading portion; 60-support part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

Fig. 1 is a schematic structural diagram of a high-sensitivity temperature detection device according to an embodiment of the present invention; as shown in fig. 1, the present application provides a high-sensitivity gas temperature detection apparatus, including: the housing 10, the light source 20, the detector 30, the photonic material layer 40, the expansion portion 50, and the support portion 60; the interior of the housing 10 is divided into a first cavity 11 and a second cavity 12, the first cavity 11 is internally provided with a light source 20, a detector 30, a photon material layer 40, an expansion part 50 and a support part 60, the light source 20 is arranged on the side wall of the housing 10 far away from the top end of the second cavity 12, the detector 30 is arranged on the side wall of the housing 10 opposite to the arrangement position of the light source 20, the expansion part 50 and the support part 60 are respectively arranged at two ends of the first cavity 11 close to the second cavity 12, the expansion part 50 is filled with thermal expansion material, a thermal insulation layer is arranged on one side of the support part 60 close to the second cavity 12, the support part 60 is made of elastic material, the photonic material layer 40 is arranged between the light source 20 and the expansion part 50 and the second cavity 12, the photon material layer 40 is formed by periodically arranging two photon materials with high reflectivity, and the positions of the second cavity 12 close to the side wall of the shell 10 are respectively provided with an air inlet 13 and an air outlet 14.

The shell 10, the light source 20, the detector 30, the photon material layer 40, the expansion part 50 and the support part 60 are all arranged inside the shell 10, the photon material layer 40 is arranged between the light source 20 and the expansion part 50 and the second chamber 12, and light generated by the light source 20 is reflected to the detector 30 through the photon material layer 40, that is, a connecting line of the photon material layer 40 at the position where the light source 20 is arranged forms a plane, the photon material layer 40 is arranged between the connecting line of the light source 20 and the expansion part 50 and the second chamber 12, the shape of the shell 10 is set according to actual needs, which is not particularly limited, for convenience of processing, generally, the shape of the shell 10 is set to be a cuboid structure, the shell 10 is a cavity structure, the light source 20, the detector 30 and the photon material layer 40 are arranged inside the shell 10 of the cavity structure, and the light source 20 is used for generating optical signals, the detector 30 is used for detecting an optical signal, the photonic material layer 40 is used for reflecting, transmitting and refracting the optical signal, the photonic material layer 40 is formed by periodically arranging two photonic materials with high reflectivity, generally, the material of the photonic material layer 40 is formed by periodically arranging two photonic materials, so that the silicon dioxide material layer and the silicon dioxide material layer can strongly reflect the optical signal, the number of layers of the photonic material layer 40 and the material of each layer are determined according to actual needs and are not specifically limited herein, for convenience of description, the number of layers of the photonic material layer 40 is described as three, the irradiation direction of the light source 20 is on the photonic material layer 40, and the optical signal generated by the light source 20 irradiates on the first layer of the photonic material layer 40 and is reflected by the first layer of the photonic material layer 40, reflected onto the detector 30, the remaining optical signal passes through the first layer of photonic material layer 40 to the second layer of photonic material layer 40, the second layer of photonic material layer 40 reflects a portion of the optical signal onto the first layer of photonic material layer 40, the reflected portion of light passes through the first layer, another portion is multiply refracted between the first layer and the second layer, and a further portion passes through the second layer to the third layer, the transmitted portion and the reflected portion of light, respectively, reflect to the second layer, mix with light of the second layer, multiply refract between the second layer and the third layer, the optical signal entering the second layer is multiply refracted between the second layer and the first layer, and then interference light is formed between the second layer and the third layer, respectively, due to reflection at the interface when passing through different media, the reflectivity is related to the refractive index between media, the photon material layer 40 is formed by periodically arranging two photon materials with high reflectivity, so that when an optical signal generated by the light source 20 passes through the photon material layers 40 with different refractive indexes, the optical signal is reflected for multiple times through multiple layers of photon materials, the optical signals reflected by the layers generate constructive interference due to the change of phase angles, and are combined together, so that the detector 30 detects a strong reflected optical signal, and the optical signal is transmitted in the photon material layer 40 to form multiple interference, so that the optical signal reflected to the detector 30 is stronger; the expansion part 50 is filled with a thermal expansion material, the type of the thermal expansion material is determined according to actual needs, and is not specifically limited herein, one side of the support part 60 close to the second cavity 12 is provided with a thermal insulation layer, the material of the support part 60 is an elastic material, the positions of the second cavity 12 close to the side wall of the housing 10 are respectively provided with an air inlet 13 and an air outlet 14, the sizes of the air inlet 13 and the air outlet 14 are determined according to actual needs, and are not specifically limited herein, when the temperature of the gas to be detected needs to be detected, the gas to be detected enters the second cavity 12 through the air inlet 13 of the second cavity 12, because the expansion part 50 and the support part 60 are both arranged on one side of the first cavity 11 close to the second cavity 12, under the effect of temperature, the expansion part 50 expands, and the photon material layer 40 at the top of the expansion part 50 is jacked up, since the material of the supporting portion 60 is an elastic material, the height of the side of the bottom of the photonic material layer 40 where the expansion portion 50 is disposed is increased, and the height of the other end is decreased, so that the photonic material layer 40 is inclined, so that the included angle between the incident light signal of the light source 20 and the photonic material layer 40 is changed, and further the spectrum of the light signal reflected to the detector 30 by the light signal generated by the light source 20 after passing through the photonic material layer 40 is changed, the change condition of the spectrum of the light signal is detected by the detector 30, and the temperature of the gas to be detected is obtained according to the corresponding relationship between the change condition of the spectrum of the light signal detected by the detector 30 and the temperature of the gas to be detected, which is obtained by experimental measurement without specific limitation, generally, the expansion part 50 is an open-topped structure, which facilitates the expansion part 50 to jack up the photonic material layer 40 after being expanded by heat.

The application has the specific beneficial effects that: 1. the device changes the inclination of the photon material layer 40 through the change of temperature, the Bragg reflection cavity formed under the arrangement of proper parameters has a strong light interference function firstly, so that the measurement is more sensitive, and the Bragg reflection cavity is greatly influenced by the inclination degree, so the device is very accurate; 2. when the temperature is changed, in addition to changing the inclination of the photonic material layer 40, the refractive index of the lowest material of the photonic material layer 40 is also changed under the influence of the temperature, and the change of the refractive index greatly affects the change of the spectrum, so that the double change enables the device to have the characteristics of high sensitivity and high accuracy.

Optionally, a light cooling film is disposed on the outer wall of the support portion 60.

The optical signal generated by the light source 20 is transmitted to the supporting portion 60 through the photonic material layer 40, and the temperature of the optical cooling film arranged outside the supporting portion 60 is reduced under the action of light, so that the air pressure of the supporting portion 60 is reduced, the supporting portion 60 contracts, the photonic material portion is further inclined, and the gas temperature detection is more sensitive.

Optionally, the material of the photonic material layer 40 is silicon dioxide and polymethylpentene.

The material of the photonic material layer 40 is silicon dioxide and polymethylpentene, and since the photonic material layer 40 has a multi-layer structure, the photonic material layer 40 can be a layer of silicon dioxide and a layer of polymethylpentene.

FIG. 2 is a schematic structural diagram of another high-sensitivity temperature detection device according to an embodiment of the present invention; as shown in fig. 2, the shape of the expansion part 50 is optionally an upright trapezoidal shape.

The 50 bottom heated area of inflation portions of positive trapezoidal platform shape is bigger, and the reduction of volume all around makes its deformation that upwards inflation produced bigger, and then makes the device sensitivity of this application better.

FIG. 3 is a schematic structural diagram of another high-sensitivity temperature detection device according to an embodiment of the present invention; as shown in fig. 3, the device optionally further includes a heat absorption transfer portion 51, the heat absorption transfer portion 51 is a good conductor of heat, and the specific material is not limited herein, and the heat absorption transfer portion 51 is disposed on the side of the expansion portion 50 close to the second cavity 12.

This endothermic transmission portion 51 sets up in one side that inflation portion 50 is close to second cavity 12 for with this inflation portion 50 inside more the transmission of the temperature on the wall of second cavity 12, very big increase heat conduction efficiency, make the device of this application more accurate to the measuring of gas temperature.

FIG. 4 is a schematic structural diagram of another high-sensitivity temperature detection device according to an embodiment of the present invention; as shown in fig. 4, the device optionally further includes a heat spreading portion 52, the material of the heat spreading portion 52 is a good conductor of heat, and the heat transferring portion 52 is a plurality of tubular structures disposed perpendicular to the wall of the first cavity 11 and inside the expansion portion 50.

The plurality of tubular structures are arranged perpendicular to the wall of the first chamber 11, inside the expansion 50, and transfer the heat from the wall of the second chamber 12 to the inside of the upper expansion 50, thereby making the heat transfer measured in the expansion 50 uniform, and thus making the system more sensitive.

Optionally, the device further includes a first metal portion and a second metal portion, which are respectively disposed at two ends of the photonic material layer 40 on a side away from the second cavity 12. The first metal part and the second metal part are made of noble metal materials.

The first metal portion and the second metal portion, which are metal grating structures, are respectively disposed at two ends of one side of the photonic material layer 40 close to the light source 20. In so doing, light from the light source 20 generates surface electromagnetic waves on the metal grating, which couple into the photonic crystal material 40 and propagate along the photonic crystal material 40, and at the other end, through radiation from the metal grating, the light enters the detector 30. The application of a metal grating structure enables more light to be delivered to the detector 30. Since the light emitted by the light source 20 is coupled into the metal grating, which depends heavily on the orientation of the metal grating, this solution enables a more sensitive temperature detection.

The material of the first metal part and the second metal part may be one of noble metals or a mixed noble metal material formed by combining a plurality of noble metals, and if the material of the first metal part and the second metal part is a mixed noble metal material formed by combining a plurality of noble metals, the type of noble metal and the ratio of each noble metal are determined according to actual needs, and are not particularly limited herein.

The application provides a gas temperature detection device of high sensitivity, the device includes: the housing 10, the light source 20, the detector 30, the photonic material layer 40, the expansion portion 50, and the support portion 60; the interior of the housing 10 is divided into a first cavity 11 and a second cavity 12, the first cavity 11 is internally provided with a light source 20, a detector 30, a photon material layer 40, an expansion part 50 and a support part 60, the light source 20 is arranged on the side wall of the housing 10 far from the top end of the second cavity 12, the detector 30 is arranged on the side wall of the housing 10 at a position opposite to the position of the light source 20, the expansion part 50 and the support part 60 are respectively arranged at two ends of the first cavity 11 close to the second cavity 12, the expansion part 50 is filled with a thermal expansion material, one side of the support part 60 close to the second cavity 12 is provided with a thermal insulation layer, the support part 60 is made of an elastic material, the photon material layer 40 is arranged between the light source 20 and the expansion part 50 and the second cavity 12, the photon material layer 40 is formed by periodically arranging two photon materials with high reflectivity, and the positions of the second cavity 12 close to the side wall of the housing 10 are respectively provided with an air inlet 13 and an air outlet 14, because the light signal generated by the light source 20 passes through the photonic material layers 40 with different refractive indexes, the light signal is reflected for multiple times through multiple layers of photonic materials, the light signals reflected by each layer generate constructive interference due to the change of the phase angle, and are combined with each other, so that the detector 30 detects a strong reflected light signal, when the temperature of the gas to be detected needs to be detected, the gas to be detected enters the second cavity 12 through the gas inlet 13 of the second cavity 12, because the expansion part 50 and the support part 60 are both arranged on one side of the first cavity 11 close to the second cavity 12, the expansion part 50 expands under the action of temperature, and the photon material layer 40 on the top of the expansion part 50 is jacked up, because the material of the supporting part 60 is an elastic material, the height of one side of the photon material layer 40, where the expansion part 50 is arranged, is increased, the height of the other side is decreased, so that the photon material layer 40 is inclined, the included angle between the incident light signal of the light source 20 and the photon material layer 40 is changed, the spectrum of the light signal, which is generated by the light source 20 and reflected to the detector 30 after passing through the photon material layer 40, is changed, the change condition of the spectrum of the light signal is detected by the detector 30, and the temperature of the gas to be detected is obtained according to the corresponding relationship between the change condition of the spectrum of the light signal detected by the detector 30 and the temperature of the gas to be detected.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.