CN210604361U - Gas component concentration detection device and detection equipment - Google Patents
Gas component concentration detection device and detection equipment Download PDFInfo
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- CN210604361U CN210604361U CN201921201061.9U CN201921201061U CN210604361U CN 210604361 U CN210604361 U CN 210604361U CN 201921201061 U CN201921201061 U CN 201921201061U CN 210604361 U CN210604361 U CN 210604361U
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Abstract
The present disclosure relates to a detection apparatus and a detection device for gas component concentration, the detection apparatus including: a light source for emitting an initial light beam; the light diffusion module is used for diffusing the initial light beam into a divergent light beam emitted at a preset angle; the light reflecting module is used for reflecting the divergent light beams; the light-gathering module is used for gathering the divergent light beams reflected by the light-reflecting module into converged light beams; the receiving module is used for receiving the converged light beam; and a detection chamber defining a detection space for containing a gas; the detection device for the concentration of the gas component can ensure detection precision and reduce assembly difficulty at the same time.
Description
Technical Field
The disclosure relates to the technical field of gas component concentration detection, in particular to a detection device and detection equipment for gas component concentration.
Background
Currently, a high-precision method for detecting the concentration of a gas component is to derive the concentration of the gas component based on the spectral intensity and spectral line-type absorption of a light beam with a specific wavelength by gas molecules.
The spectral intensity and spectral linetype of absorption of a particular wavelength beam by a gas molecule often needs to be achieved within the detection cell. Currently, a detection air chamber with a specific wavelength light beam as a collimated light beam is generally adopted in the market, and the purpose of increasing the optical path is achieved through the reflection times of the collimated light beam in the air chamber. However, the cross-sectional area of the path of the collimated light beam is small, so that the effective volume (namely a photosensitive area) intercepted by the light beam in the air chamber is correspondingly small, and the offset of the position of the light source is amplified by the reflection of the light beam, so that the receiving position has large deviation, and the alignment precision of the actual mounting position can be ensured only after the positions of the light beam transmitting tube and the light beam receiving tube are accurately calculated.
Therefore, the detection device for the concentration of the gas component used in the prior art has a great difficulty in assembly.
SUMMERY OF THE UTILITY MODEL
The purpose of this disclosure is to provide a detection device and check out test set of gaseous component concentration, this gaseous detection device can reduce the assembly degree of difficulty when guaranteeing to detect the precision.
In order to achieve the above object, the present disclosure provides a detection apparatus of a gas component concentration, the detection apparatus including:
a light source for emitting an initial light beam;
the light diffusion module is used for diffusing the initial light beam into a divergent light beam emitted at a preset angle;
the light reflecting module is used for reflecting the divergent light beams;
the light-gathering module is used for gathering the divergent light beams reflected by the light-reflecting module into converged light beams;
the receiving module is used for receiving the converged light beam; and the number of the first and second groups,
a detection chamber defining a detection space for containing a gas;
wherein the divergent light beam passes through the detection space at least twice on a propagation path from the light expansion module to the light concentration module.
Optionally, the light reflecting module includes a first light gathering reflector, a second light gathering reflector and a middle reflector, the divergent light beam passing through the light expansion module sequentially passes through the first light gathering reflector, the middle reflector and the second light gathering reflector and then reaches the light gathering module, and the divergent light beam passes through the detection space when propagating between any adjacent two of the first light gathering reflector, the middle reflector and the second light gathering reflector.
Optionally, the diverging light beam passes through the detection space on a propagation path from the light expansion module to the first light gathering reflector, and/or,
the divergent light beam passes through the detection space on a propagation path from the second condensing mirror to the condensing module.
Optionally, the intermediate mirror comprises a planar reflective area arranged to: the light rays reflected by the plane reflection area can all reach the second condensing reflector; and/or the presence of a gas in the gas,
the intermediate mirror comprises a convex reflective area arranged to: the light rays reflected by the convex reflecting area can all reach the second condensing reflector; and/or the presence of a gas in the gas,
the intermediate reflector includes a concave reflective region configured to: the light rays reflected by the concave reflecting area can all reach the second condensing reflector.
Optionally, the number of the intermediate mirrors is multiple, the divergent light beam sequentially passes through the intermediate mirrors from the first light gathering mirror, and the divergent light beam passes through the detection space when propagating between any two adjacent intermediate mirrors.
Optionally, the light reflecting module is fixed on a side wall of the detection chamber in the detection space.
Optionally, the light expansion module is disposed outside the detection chamber, and the detection chamber is provided with an incident window through which the divergent light beam passes to reach the detection space.
Optionally, the light condensing module is disposed outside the detection chamber, and the detection chamber is provided with an exit window through which the divergent light beam passes from the detection space to reach the light condensing module.
Optionally, the light source and the light diffusion module are integrated into a whole; and/or the presence of a gas in the gas,
the receiving module and the light-gathering module are integrated into a whole.
On the basis of the scheme, the present disclosure further provides a detection apparatus for gas component concentration, which includes the detection device for gas component concentration.
Through the technical scheme, in the gas component concentration detection device provided by the disclosure, the light expansion module can expand the initial light beam emitted by the light source into the divergent light beam so as to increase the path sectional area of the divergent light beam entering the detection space in the detection chamber, and meanwhile, the light reflection module in the detection chamber changes the propagation direction of the light beam for the emission of the divergent light beam, so that the divergent light beam can pass through the detection space at least twice, therefore, the effective volume (namely the photosensitive area) of the divergent light beam in the detection space is increased, and the sensitivity and the accuracy of gas component concentration detection can be ensured or even improved. The light beam received by the receiving module is not a single light beam directly coming from the detection space, but a convergent light beam after the divergent light beam is focused by the condensing module, so that the position of the light beam can be calculated and obtained by determining the position and the focal length of the condensing module, the light beam is not influenced by the position of the light source any more, and the assembly of the light beam is easier.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 schematically shows a block diagram of a gas detection apparatus according to a first embodiment of the present disclosure, in which a first condensing mirror, a second condensing mirror, and a first intermediate mirror are shown.
Fig. 2 schematically shows a block diagram of a gas detection apparatus according to a second embodiment of the present disclosure, in which a first condensing mirror, a second condensing mirror, a first intermediate mirror, and a second intermediate mirror are shown.
Description of the reference numerals
1 light-expanding module and 2 light-reflecting module
3 light-gathering module and 4 receiving module
21 first condensing mirror 22 second condensing mirror
23 first intermediate mirror 24 second intermediate mirror
5 collimated light source
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, the use of directional terms such as "inner and outer" means inner and outer with respect to the profile of the component itself, unless otherwise specified. Moreover, the use of the terms first, second, etc. are intended to distinguish one element from another, and are not necessarily intended to have a sequential or chronological significance. The words used above are words of description and illustration of the disclosure, rather than words of limitation.
According to an embodiment of the present disclosure, there is provided a detection apparatus of a concentration of a gas component, the detection apparatus including: a light source for emitting an initial light beam; the light diffusion module 1 is used for diffusing the initial light beam into a divergent light beam emitted at a preset angle (the preset angle can be set according to actual requirements); the reflecting module 2 is used for reflecting the divergent light beams; the light condensation module 3 is used for condensing the divergent light beams reflected by the light reflection module 2 into convergent light beams; the receiving module 4 is used for receiving the converged light beam; and a detection chamber defining a detection space for containing a gas (see the dashed box in fig. 1 and 2, where the arrows within the box may represent the components in the gas whose concentration is to be measured); wherein the diverging light beam passes through the detection space at least twice on a propagation path from the light expansion module 1 to the light collection module 3.
Through the technical scheme, in the gas component concentration detection device provided by the disclosure, the light expansion module 1 can expand the initial light beam emitted by the light source into the divergent light beam so as to increase the path sectional area of the divergent light beam entering the detection space in the detection chamber, and meanwhile, the reflection module 2 in the detection chamber reflects the divergent light beam so as to change the propagation direction of the light beam, so that the divergent light beam can pass through the detection space at least twice, therefore, the effective volume (namely, a photosensitive area) of the divergent light beam in the detection space is increased, and therefore, the sensitivity and the accuracy of gas component concentration detection can be ensured or even improved. The light beam received by the receiving module 4 is not a single light beam directly coming from the detection space, but a converging light beam after the diverging light beam is focused by the condensing module 3, so that the position of the converging module 3 can be calculated and obtained by determining the position and the focal length of the condensing module, the light beam is not influenced by the position of the light source any more, and the assembly is easy.
In the specific embodiments provided by the present disclosure, the light reflecting module 2 may be configured in any suitable manner. Optionally, the light reflecting module 2 includes a first light gathering reflector 21, a second light gathering reflector 22 and an intermediate reflector, the divergent light beam passing through the light expansion module 1 sequentially passes through the first light gathering reflector 21, the intermediate reflector and the second light gathering reflector 22 and then reaches the light gathering module 3, and the divergent light beam passes through the detection space when propagating between any adjacent two of the first light gathering reflector 21, the intermediate reflector and the second light gathering reflector 22, so as to ensure that the divergent light beam passes through the detection space at least twice on the propagation path from the light expansion module 1 to the light gathering module 3.
The diverging light beam can also pass through the detection space on the propagation path from the light expansion module 1 to the first light gathering reflector 21, so that the number of times that the light beam passes through the detection space is increased, and the photosensitive area is correspondingly increased. For example, the divergent light beam emitted after the initial light beam is expanded by the light expansion module 1 can enter the detection space in a shorter path and then reach the mirror surface position of the first light gathering reflector 21, so that unnecessary or unexpected light loss can be reduced and the measurement accuracy can be ensured.
Accordingly, the diverging light beam may pass through the detection space on the propagation path from the second condenser mirror 22 to the condenser module 3, increasing the number of times the light beam passes through the detection space, correspondingly increasing the photosensitive area. For example, the divergent light beam converged and reflected by the second condenser mirror 22 can be made to pass through the detection space and reach the condenser module 3 in a shorter path, so that the necessary or unexpected photon loss on the propagation path can be reduced and the accuracy of the measurement can be ensured.
Fig. 1 and 2 show different embodiments of the reflector module 2 and in both embodiments the diverging light beam traverses the detection space on its propagation path from the diffuser module 1 to the first condenser reflector 21 and the diverging light beam traverses said detection space on its propagation path from the second condenser reflector 22 to the condenser module 3. In the first embodiment shown in fig. 1, the light reflecting module 2 is configured to include a first light gathering reflector 21, a second light gathering reflector 22 and a first intermediate reflector 23, and the divergent light beam passing through the light expansion module 1 passes through the first light gathering reflector 21, the first intermediate reflector 23 and the second light gathering reflector 22 in sequence and then reaches the light gathering module 3, so that the divergent light beam passes through the detection space four times on the path from the light expansion module 1 to the light gathering module 3. In the second embodiment as shown in fig. 2, the reflector module 2 is configured to include a first light gathering reflector 21, a second light gathering reflector 22, a first intermediate reflector 23 and a second intermediate reflector 24, and the divergent light beam passing through the light expansion module 1 passes through the first light gathering reflector 21, the first intermediate reflector 23, the second intermediate reflector 23 and the second light gathering reflector 22 in sequence and then reaches the light condensation module 3, so that the divergent light beam passes through the detection space five times on the path from the light expansion module 1 to the light condensation module 3. In other embodiments of the present disclosure, the light reflecting module 2 may also be configured in other ways, and the present disclosure is not limited thereto.
In the specific embodiments provided by the present disclosure, the intermediate mirror may be configured in any suitable manner. Optionally, the intermediate mirror comprises a planar reflective area arranged to: the light reflected by the planar reflecting area can all reach the second condensing mirror 22, so as to avoid the light loss from affecting the detection effect. For example, the planar reflective area of the intermediate mirror may be made to face the second condensing mirror 22, or to face the next intermediate mirror (if present).
Optionally, the intermediate mirror comprises a convex reflective region arranged to: the light reflected by the convex reflecting region can all reach the second condensing reflector 22, so as to avoid the light loss from affecting the detection effect. For example, the light-spreading area of the convex reflective area of the intermediate mirror may be made to fall within the second condensing mirror 22 or the next intermediate mirror (if any).
Optionally, the intermediate mirror comprises concave reflective regions arranged to: the light reflected by the concave reflecting area can all reach the second condensing reflector 22, so as to avoid the light loss from influencing the detection effect. For example, the light gathering area of the concave reflective area of the intermediate mirror may be made to fall within the second light gathering reflector 22 or the next intermediate mirror (if present).
In the specific embodiments provided in the present disclosure, the intermediate reflecting mirror may selectively include one or more of the above-mentioned planar regions, convex reflecting regions and concave regions, and the number of the included one or more may be selected according to actual needs, for example, one or more, and in the case of a plurality of the one or more, the arrangement manner may also be selected according to actual needs, for example, the one or more may be arranged alternately, arranged in a predetermined order, and the like. In this regard, the present disclosure is not particularly limited.
Further, in the specific embodiments provided by the present disclosure, the intermediate mirror may be configured in any suitable manner. Alternatively, the number of intermediate mirrors may be multiple, the divergent light beam passes through the multiple intermediate mirrors from the first light gathering mirror 21 in sequence, and the divergent light beam passes through the detection space as it propagates between any adjacent two of the multiple intermediate mirrors, so as to increase the effective volume (i.e., the photosensitive area) of the divergent light beam within the detection space. In the first embodiment shown in fig. 1, the intermediate mirrors are configured as a first intermediate mirror 23, and in the second embodiment shown in fig. 2, the intermediate mirrors are configured as a first intermediate mirror 23 and a second intermediate mirror 24. In other embodiments of the present disclosure, the intermediate mirror may be configured in other ways, and the present disclosure is not limited thereto.
Wherein, when the light reflecting module 2 is configured as above, as in the first embodiment shown in fig. 1, the light reflecting module 2 may be configured as the first intermediate reflecting mirror 23 including only the plane reflecting area, as in the second embodiment described in fig. 2, the intermediate reflecting mirror may be configured as the first intermediate reflecting mirror 23 including only the plane reflecting area and the second intermediate reflecting mirror 24 including only the concave reflecting area. That is, in the case where a plurality of intermediate mirrors are provided, the intermediate mirrors therein may not necessarily be configured in the same arrangement. In other embodiments of the present disclosure, the intermediate mirror may be configured in other ways, and the present disclosure is not limited thereto.
In the embodiments provided in the present disclosure, the light reflecting module 2 may be fixed on the side wall of the detection chamber in the detection space to realize the reflection of the divergent light beam in the detection space. In this case, on the one hand, the construction complexity of the detection chamber can be reduced, and on the other hand, light losses caused by the position of the light-reflecting module 2 (inside or outside the detection chamber) can be reduced or even avoided.
Wherein the detection chamber may be configured in any suitable manner. Alternatively, the detection chamber may be configured as a semi-open style gas collection chamber for real-time detection of the constituent concentration of the sampled gas. In other embodiments of the present disclosure, the detection chamber may be configured in other configurations, for example, the detection chamber may be configured as an openable sealed space for improving detection accuracy when detecting the component concentration of the sampling gas within a prescribed time. The disclosure is not limited in this regard.
In addition, in the embodiments provided in the present disclosure, the light diffusion module 1 may be disposed outside the detection chamber to facilitate adjustment and replacement. In this regard, the detection chamber may be opened with an entrance window (on which glass may be mounted) for the diverging light beam to pass through to reach the detection space.
In addition, in the embodiments provided in the present disclosure, the light condensing module 3 may be disposed outside the detection chamber to facilitate adjustment and replacement. The detection chamber is provided with an exit window (glass can be arranged on the exit window) for the divergent light beam to pass through the detection space to reach the light condensation module 3.
Furthermore, in the embodiments provided in the present disclosure, optionally, the light source and the light diffusion module 1 are integrated into a whole, so as to reduce or even avoid the position deviation between the light source and the light diffusion module 1 caused by the assembly, and at the same time, the step of installing the light source can be omitted, and the assembly step can be simplified. Of course, the light source and the light spreading module 1 may be relatively independent (as shown in fig. 1 and 2), i.e. need to be installed separately, if desired. In this regard, the present disclosure is not particularly limited.
Alternatively, the receiving module 4 and the light-gathering module 3 may be integrated to reduce or even avoid positional deviation between the two caused by assembly, while also eliminating the step of mounting the receiving module 4 and simplifying the assembly step. Of course, the receiving module 4 and the concentrator module 3 may be relatively independent (as shown in fig. 1 and 2), i.e., need to be installed separately, if desired. In this regard, the present disclosure is not particularly limited.
It should be noted that the light source, the light spreading module 1, and the light collecting module 3 in the present disclosure may be arranged in any desired manner. For example, the light source may be configured as a collimated light source 5 as shown in fig. 1 and 2; the light diffusion module 1 can be configured as a concave lens and can also be configured as a convex mirror; the concentrator module 3 may be configured as a convex lens, and may also be configured as a concave mirror. In other embodiments of the present disclosure, the light source, the light spreading module 1, and the light condensing module 3 may also be configured in other manners, and the present disclosure is not limited thereto.
In addition, the present disclosure also provides a detection apparatus for a gas component concentration, which includes the above detection device for a gas component concentration. For example, the gas component concentration detection device may include a light beam detection element, and the converged light beam received by the receiving module 4 in the gas component concentration detection device is transmitted to the light beam detection element, and the light beam detection element may detect the spectral intensity, the spectral line type, and the like of the light beam, so as to calculate the concentration of the gas component in the detection space.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A gas component concentration detection apparatus, comprising:
a light source for emitting an initial light beam;
the light diffusion module (1) is used for diffusing the initial light beam into a divergent light beam emitted at a preset angle;
a light reflecting module (2) for reflecting the diverging light beam;
the light condensation module (3) is used for focusing the divergent light beams reflected by the light reflection module (2) into convergent light beams;
a receiving module (4) for receiving the converged light beam; and the number of the first and second groups,
a detection chamber defining a detection space for containing a gas;
wherein the diverging light beam traverses the detection space at least twice on a propagation path from the light expansion module (1) to the light concentration module (3).
2. The detection device according to claim 1, wherein the light reflecting module (2) comprises a first light gathering reflector (21), a second light gathering reflector (22) and an intermediate reflector, the divergent light beam passing through the light expansion module (1) sequentially passes through the first light gathering reflector (21), the intermediate reflector and the second light gathering reflector (22) and then reaches the light gathering module (3), and the divergent light beam passes through the detection space when propagating between any adjacent two of the first light gathering reflector (21), the intermediate reflector and the second light gathering reflector (22).
3. Detection device according to claim 2, characterized in that said diverging light beam traverses said detection space on its propagation path from said light expansion module (1) to said first light collection mirror (21), and/or,
the diverging light beam passes through the detection space on a propagation path from the second condenser mirror (22) to the condenser module (3).
4. The detection apparatus of claim 2, wherein the intermediate mirror comprises a planar reflective region configured to: the light rays reflected by the planar reflecting area can all reach the second condensing reflector (22); and/or the presence of a gas in the gas,
the intermediate mirror comprises a convex reflective area arranged to: the light rays reflected by the convex reflecting area can all reach the second condensing reflector (22); and/or the presence of a gas in the gas,
the intermediate reflector includes a concave reflective region configured to: the light reflected by the concave reflecting area can all reach the second condensing reflector (22).
5. The detection device according to claim 2, wherein the number of the intermediate mirrors is plural, the divergent light beam passes through the plural intermediate mirrors from the first condensing mirror (21) in sequence, and the divergent light beam passes through the detection space while propagating between any adjacent two of the plural intermediate mirrors.
6. The detection apparatus according to claim 1, wherein the light reflecting module (2) is fixed on a side wall of the detection chamber within the detection space.
7. The detection device according to claim 1, wherein the light expansion module (1) is disposed outside the detection chamber, and the detection chamber is opened with an incident window for the divergent light beam to pass through to reach the detection space.
8. The detection device according to claim 1, wherein the light-gathering module (3) is arranged outside the detection chamber, and the detection chamber is provided with an exit window for the divergent light beam to pass through from the detection space to reach the light-gathering module (3).
9. The detection device according to claim 1, characterized in that said light source and said light-diffusing module (1) are integrated; and/or the presence of a gas in the gas,
the receiving module (4) and the light-gathering module (3) are integrated into a whole.
10. A gas component concentration detection apparatus, characterized in that it comprises a gas component concentration detection device according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921201061.9U CN210604361U (en) | 2019-07-26 | 2019-07-26 | Gas component concentration detection device and detection equipment |
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| CN201921201061.9U CN210604361U (en) | 2019-07-26 | 2019-07-26 | Gas component concentration detection device and detection equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116106524A (en) * | 2023-04-11 | 2023-05-12 | 深圳市帝迈生物技术有限公司 | Blood analysis device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116106524A (en) * | 2023-04-11 | 2023-05-12 | 深圳市帝迈生物技术有限公司 | Blood analysis device |
| CN116106524B (en) * | 2023-04-11 | 2023-08-25 | 深圳市帝迈生物技术有限公司 | blood analysis device |
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