CN109283152A - Gas measurement device - Google Patents
Gas measurement device Download PDFInfo
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- CN109283152A CN109283152A CN201710588800.3A CN201710588800A CN109283152A CN 109283152 A CN109283152 A CN 109283152A CN 201710588800 A CN201710588800 A CN 201710588800A CN 109283152 A CN109283152 A CN 109283152A
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- reflection
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- 238000005259 measurement Methods 0.000 title claims abstract description 88
- 238000005070 sampling Methods 0.000 claims abstract description 147
- 230000003287 optical effect Effects 0.000 claims abstract description 59
- 238000004020 luminiscence type Methods 0.000 claims abstract description 47
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000000571 coke Substances 0.000 claims description 3
- 208000007578 phototoxic dermatitis Diseases 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 23
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000012447 hatching Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention discloses a kind of gas measurement device comprising a cavity module, a light emitting module and an optical sensing module.Cavity module includes an optically focused cavity, an accommodating cavity and a sampling cavity.Optically focused cavity has one first catoptric arrangement, one second catoptric arrangement and a third catoptric arrangement.First catoptric arrangement is set between the second catoptric arrangement and third catoptric arrangement.Light emitting module is set on optically focused cavity, and light emitting module includes a luminescence unit.Luminescence unit corresponds to optically focused cavity.Optical sensing module includes a light sensing unit, and light sensing unit is set in accommodating cavity.Whereby, the present invention can improve the collection photosensitiveness of cavity module.
Description
Technical field
The present invention relates to a kind of gas measurement device, the gasmetry more particularly to a kind of measurable gas concentration is filled
It sets.
Background technique
Firstly, the carbon dioxide detection device or capnograph that sell on the market now, are nearly all using non-
Distributing infrared ray (Non-dispersive Infrared, NDIR) absorption process carrys out detection gas concentration, it is main according to than
That-Lambert law (Beer-Lambert law) is calculated.Its principle is to utilize suction of the gas to infrared ray special wavelength
Characteristic and the gas concentration characteristic directly proportional to uptake are received, to detect specific gas concentration.Such as carbon monoxide is micro- to 4.7
Rice (μm) wavelength, carbon dioxide are most strong to the absorbability of the infrared ray of 4.3 microns of (μm) wavelength.
With the measurement accuracy of gas concentration measuring apparatus at present on the market, the structure for being still limited by gas sampling room is set
Meter, when the amount for the infrared ray for being projected to infrared sensor is reduced, it will influence the measurement accuracy of gas concentration.
In addition, in such as patent announcement the TWM476923rd " the on-dispersive formula infrared ray air cavity of high efficiency " Patent Case, it is main
Ellipse bifocal nature is utilized, infrared light sources are placed in a focus, infrared sensor is placed in another focus, to obtain
Height collection photosensitiveness, while meeting narrow incidence angle demand needed for infrared sensor.But TWM476923 Patent Case, although energy
It is effective to improve collection photosensitiveness, still, it will because in order to using oval bifocal characteristic due to increase infrared ray air cavity ontology 200
Length keeps its overall volume excessive.Furthermore the error caused by being also easy because of production and assembly technique, and make infrared sensing
Device causes the reception signal of infrared sensor to decline not on correct focal position.
Furthermore, for typical infrared ray sensor, the incident light on infrared ray sensor is projected
When the incidence angle of line is greater than 20 degree, it will because filter plate has certain wavestrip width, and make filter plate peak value inclined to short wavelength
Move is about 40nm (nanometer).Whereby, it will the light for causing some to be not belonging under test gas absorption originally is thrown
Be incident upon infrared ray sensor, and another part and under test gas concentration be mutually related light be intercepted at it is outer, to reduce
Signal strength, thereby reduces actual measurement accuracy.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of gas measurement device in view of the deficiencies of the prior art.
In order to solve the above technical problems, a wherein technical solution of the present invention is to provide a kind of gas survey
Measure device comprising a cavity module, a light emitting module and an optical sensing module.The cavity module includes a laser pump cavity
Body, an accommodating cavity and one are connected to the sampling cavity between the optically focused cavity and the accommodating cavity, wherein described poly-
There is optical cavity body one first catoptric arrangement, one to be connected to the second catoptric arrangement of first catoptric arrangement and one be connected to institute
State the third catoptric arrangement of the first catoptric arrangement, wherein first catoptric arrangement is set to second catoptric arrangement and institute
It states between third catoptric arrangement.The light emitting module is set on the optically focused cavity, and the light emitting module includes one luminous single
Member, wherein the luminescence unit corresponds to the optically focused cavity.The optical sensing module includes a light sensing unit, the light sensation
Unit is surveyed to be set in the accommodating cavity.
Further, the curvature of first catoptric arrangement, the curvature and the third of second catoptric arrangement
The curvature three of catoptric arrangement is different.
Further, first catoptric arrangement has one first focus and one corresponds to the of first focus
Two focuses, second catoptric arrangement have a central point, the third catoptric arrangement have a focus, first focus,
The central point and the focus correspond to each other setting.
Further, the luminescence unit corresponds to first focus, the central point and the focus.
Further, the luminescence unit is set in first focus, the central point and the focus.
Further, first catoptric arrangement has an elliptical curvature curved surface, and second catoptric arrangement has one
Positive round curvature surface, the third catoptric arrangement have a parabolic curvature curved surface.
Further, the sampling cavity includes one being connected to the first sampling cavity of the optically focused cavity, one being connected to
Second sampling cavity of the accommodating cavity and one it is connected to turnover between first sampling cavity and second sampling cavity
Portion.
Further, first sampling cavity, second sampling cavity and the U-shaped shape of turning point three
Shape.
Further, the sampling cavity has one first to be open and one opens corresponding to the second of first opening
Mouthful, first opening is connected to the optically focused cavity, and second opening is connected to the accommodating cavity, first opening
Sectional area be less than it is described second opening sectional area.
Further, the sampling cavity has a first surface and a second surface, and the sampling cavity has
One first opening and second opening corresponding to first opening, first opening are connected to the optically focused cavity,
Second opening is connected to the accommodating cavity, has between the first surface and the second surface of first opening
There is one first preset distance, there is one second pre- spacing between the first surface and the second surface of second opening
From second preset distance is greater than first preset distance.
Further, the cavity module still further comprises one and is set to the sampling cavity and the accommodating cavity
Between light guide section, there is a predetermined height between the second surface and the light sensing unit of second opening
Degree, the predetermined altitude and second preset distance meet following equation: (0.8 × L2)≤H≤(3 × L2), wherein H is institute
Predetermined altitude is stated, L2 is second preset distance.
Further, it is described sampling cavity include one first opening, one correspond to it is described first opening second opening,
One first surface and a second surface corresponding to the first surface, first opening are connected to the optically focused cavity,
Second opening is connected to the accommodating cavity, and the first surface and the second surface are set to first opening
Between second opening, the first surface and the second surface are in non-parallel setting.
Further, the cavity module still further comprises one and is set to the sampling cavity and the accommodating cavity
Between light guide section, the light guide section has a light guiding surface, and the light guiding surface is relative to horizontal axis inclination one between 30 degree
Predetermined angular between 60 degree.
Further, the cavity module still further comprises one and is set to the sampling cavity and the accommodating cavity
Between light guide section and a fluting, the fluting is connected between the light guide section and the accommodating cavity, the sampling cavity
Body has a first surface and a second surface, and the fluting has a preset width, second table of the sampling cavity
There is a predetermined altitude, the preset width and the predetermined altitude meet following equation between face and the light sensing unit:
(0.8 × W)≤H≤(3 × W), wherein H is the predetermined altitude, and W is the preset width.
Further, the light emitting module is infrared optical emitters, and the optical sensing module is infrared ray sensor.
Further, a light caused by the light emitting module include one be projeced into first catoptric arrangement
One throw light, one are projeced into the second throw light of second catoptric arrangement and one are projeced into the third catoptric arrangement
Third throw light, wherein first throw light is projected to by the reflection of first catoptric arrangement with forming one
First reflection light of second focus, first reflection light and the sampling cavity cooperate, and are thrown with forming one
It is incident upon on the light sensing unit and light is received by the light sensing unit institute received first, wherein second projection
Light is projected to the second reflection light of first catoptric arrangement with formation one by the reflection of second catoptric arrangement,
Second reflection light by the reflection of first catoptric arrangement, with formed one be projected to second focus third it is anti-
Light is penetrated, the third reflection light and the sampling cavity cooperate, and are projected on the light sensing unit to form one
And light is received by the light sensing unit institute received second, wherein the third throw light is reflected by the third
The reflection of structure is projected on the light sensing unit and with forming one by the received third reception light of the light sensing unit institute
Line.
An other technical solution of the present invention be to provide a kind of gas measurement device it include a cavity module,
One light emitting module and an optical sensing module.The cavity module is connected to including an optically focused cavity, an accommodating cavity and one
Sampling cavity between the optically focused cavity and the accommodating cavity, wherein the optically focused cavity has one first catoptric arrangement
And one be connected to first catoptric arrangement the second catoptric arrangement, wherein the sampling cavity include one be connected to it is described
First sampling cavity of optically focused cavity, one be connected to it is described accommodating cavity the second sampling cavity and one be connected to it is described first sampling
Turning point between chamber and second sampling cavity, wherein there is a reflecting surface on the turning point.The light emitting module setting
In on the optically focused cavity, the light emitting module includes a luminescence unit, wherein the luminescence unit corresponds to the laser pump cavity
Body.The optical sensing module includes a light sensing unit, and the light sensing unit is set in the accommodating cavity.
Further, the curvature of first catoptric arrangement is different from the curvature of second catoptric arrangement.
Further, first catoptric arrangement corresponds to the second of first focus with one first focus and one
Focus, second catoptric arrangement have a central point, and first focus and the central point correspond to each other setting.
Further, the luminescence unit corresponds to first focus and the central point.
Further, the luminescence unit is set on first focus and the central point.
Further, first catoptric arrangement has an elliptical curvature curved surface, and second catoptric arrangement has one
Positive round curvature surface, the luminescence unit are set on first focus and the central point.
Further, the reflecting surface has a parabolic curvature.
Further, first sampling cavity has a first axle, and second sampling cavity has a second axis,
The first axle is set in parallel with the second axis.
Further, first sampling cavity, second sampling cavity and the U-shaped shape of turning point three
Shape.
Further, a light caused by the light emitting module include one be projeced into first catoptric arrangement
One throw light and one be projeced into second catoptric arrangement the second throw light, wherein first throw light is logical
The reflection of first catoptric arrangement is crossed, to form first reflection light for being projected to second focus, described first is anti-
Light is penetrated by the reflection of the reflecting surface, is projected to forming one on the light sensing unit and by the light sensing unit institute
Received first receives light, wherein second throw light is thrown by the reflection of second catoptric arrangement with forming one
It is incident upon the second reflection light of first catoptric arrangement, second reflection light is anti-by first catoptric arrangement
It penetrates, to form a third reflection light for being projected to second focus, the third reflection light passes through the reflecting surface
Reflection is projected on the light sensing unit and with forming one by the received second reception light of the light sensing unit institute.
Further, second sampling cavity includes one first opening, one corresponds to second opening for first opening
Mouth, a first surface and one correspond to the second surface of the first surface, and first opening is connected to the turning point,
Second opening is connected to the accommodating cavity, has between the first surface and the second surface of first opening
There is one first preset distance, there is one second pre- spacing between the first surface and the second surface of second opening
From second preset distance is greater than first preset distance.
Further, the cavity module still further comprises one and is set to second sampling cavity and the accommodating cavity
Light guide section between body has one to make a reservation between the second surface and the light sensing unit of second opening
Highly, the predetermined altitude and second preset distance meet following equation: (0.8 × L2)≤H≤(3 × L2), wherein H is
The predetermined altitude, L2 are second preset distance.
Further, the cavity module still further comprises one and is set to second sampling cavity and the accommodating cavity
Light guide section between body, the light guide section have a light guiding surface, and the light guiding surface is relative to horizontal axis inclination one between 30
Spend the predetermined angular between 60 degree.
Further, the cavity module still further comprises one and is set to second sampling cavity and the accommodating cavity
Light guide section and a fluting, the fluting between body are connected between the light guide section and the accommodating cavity, and described second
Sampling cavity have a first surface and a second surface, it is described fluting have a preset width, second sampling cavity it is described
There is a predetermined altitude, the preset width and the predetermined altitude meet following between second surface and the light sensing unit
Formula: (0.8 × W)≤H≤(3 × W), wherein H is the predetermined altitude, and W is the preset width.
Further, the light emitting module is infrared optical emitters, and the optical sensing module is infrared ray sensor.
Further, the optically focused cavity further has a third reflection for being connected to first catoptric arrangement
Structure, first catoptric arrangement are set between second catoptric arrangement and the third catoptric arrangement.
Further, the third catoptric arrangement has a parabolic curvature curved surface.
Further, a light caused by the light emitting module include one be projeced into first catoptric arrangement
One throw light, one are projeced into the second throw light of second catoptric arrangement and one are projeced into the third catoptric arrangement
Third throw light, wherein first throw light is projected to by the reflection of first catoptric arrangement with forming one
First reflection light of second focus, first reflection light are projected by the reflection of the reflecting surface with forming one
Light is received on to the light sensing unit and by the light sensing unit institute received first, wherein second projection light
Line is projected to the second reflection light of first catoptric arrangement, institute with formation one by the reflection of second catoptric arrangement
The second reflection light is stated by the reflection of first catoptric arrangement, to form a third reflection for being projected to second focus
Light, the third reflection light by the reflection of the reflecting surface, with formed one be projected on the light sensing unit and by
The light sensing unit institute received second receives light, wherein the third throw light passes through the third catoptric arrangement
Reflection, be projected to the 4th reflection light on the reflecting surface to form one, the 4th reflection light passes through the reflection
The reflection in face is projected on the light sensing unit and with forming one by the received third reception light of the light sensing unit institute
Line.
A wherein beneficial effect of the invention is that gas measurement device provided by the embodiment of the present invention can utilize
" there is the optically focused cavity one first catoptric arrangement, one to be connected to the second catoptric arrangement and one of first catoptric arrangement
It is connected to the third catoptric arrangement of first catoptric arrangement, wherein first catoptric arrangement is set to second reflection
Between structure and the third catoptric arrangement " technical solution, or " the sampling cavity includes one being connected to the laser pump cavity
First sampling cavity of body, one are connected to the second sampling cavity of the accommodating cavity and one are connected to first sampling cavity and institute
State the turning point between the second sampling cavity, wherein with a reflecting surface on the turning point " technical solution, and chamber can be improved
The collection photosensitiveness of module, while gas measurement device can be also miniaturized.
Be further understood that feature and technology contents of the invention to be enabled, please refer to below in connection with it is of the invention specifically
Bright and attached drawing, however provided attached drawing is merely provided for reference and description, is not intended to limit the present invention.
Detailed description of the invention
Fig. 1 is a wherein Three-dimensional combination diagram for first embodiment of the invention gas measurement device.
Fig. 2 is an other Three-dimensional combination diagram for first embodiment of the invention gas measurement device.
Fig. 3 is a wherein perspective exploded view for first embodiment of the invention gas measurement device.
Fig. 4 is an other perspective exploded view for first embodiment of the invention gas measurement device.
Fig. 5 is the side elevational cross-section schematic diagram of the V-V hatching line of Fig. 1.
Fig. 6 is that the first catoptric arrangement of first embodiment of the invention gas measurement device is formed by light projection signal
Figure.
Fig. 7 is that the second catoptric arrangement of first embodiment of the invention gas measurement device is formed by light projection signal
Figure.
Fig. 8 is that the third catoptric arrangement of first embodiment of the invention gas measurement device is formed by light projection signal
Figure.
Fig. 9 is that a wherein light for first embodiment of the invention gas measurement device projects schematic diagram.
Figure 10 is that an other light for first embodiment of the invention gas measurement device projects schematic diagram.
Figure 11 is the partial enlargement diagram of the part XI-XI of Figure 10.
Figure 12 is that a wherein light for second embodiment of the invention gas measurement device projects schematic diagram.
Figure 13 is that an other light for second embodiment of the invention gas measurement device projects schematic diagram.
Figure 14 is that another light of second embodiment of the invention gas measurement device projects schematic diagram.
Figure 15 is a wherein Three-dimensional combination diagram for third embodiment of the invention gas measurement device.
Figure 16 is an other Three-dimensional combination diagram for third embodiment of the invention gas measurement device.
Figure 17 is a wherein perspective exploded view for third embodiment of the invention gas measurement device.
Figure 18 is an other perspective exploded view for third embodiment of the invention gas measurement device.
Figure 19 is the side elevational cross-section schematic diagram of the XIX-XIX hatching line of Figure 15.
Figure 20 is that a wherein light for third embodiment of the invention gas measurement device projects schematic diagram.
Figure 21 is that an other light for third embodiment of the invention gas measurement device projects schematic diagram.
Figure 22 is that another light of third embodiment of the invention gas measurement device projects schematic diagram.
Figure 23 is the side elevational cross-section schematic diagram of the XXIII-XXIII hatching line of Figure 15.
Figure 24 is that a wherein light of the light in the second sample space projects schematic diagram.
Figure 25 is that an other light of the light in the second sample space projects schematic diagram.
Figure 26 is that another light of the light in the second sample space projects schematic diagram.
Figure 27 is that the light of the gas measurement device in third embodiment of the invention with third catoptric arrangement projects signal
Figure.
Figure 28 is the Three-dimensional combination diagram of fourth embodiment of the invention gas measurement device.
Figure 29 is the perspective exploded view of fourth embodiment of the invention gas measurement device.
Figure 30 is a wherein schematic diagram of internal structure for fourth embodiment of the invention gas measurement device.
Figure 31 is an other schematic diagram of internal structure for fourth embodiment of the invention gas measurement device.
Figure 32 is the schematic diagram of internal structure of fifth embodiment of the invention gas measurement device
Specific embodiment
It is to illustrate the presently disclosed embodiment party in relation to " gas measurement device " by specific specific example below
Formula, those skilled in the art can understand advantages of the present invention and effect by content disclosed in this specification.The present invention can pass through
Other different specific embodiments are implemented or are applied, and the various details in this specification may be based on different viewpoints and answer
With, carry out without departing from the spirit of the present invention it is various modification and change.In addition, attached drawing of the invention is only that simple signal is said
It is bright, not according to the description of actual size, stated.Related skill of the invention will be explained in further detail in the following embodiments and the accompanying drawings
Art content, but the technical scope that disclosure of that is not intended to limit the invention.
It should be understood that although various elements or signal etc. may be described using term first, second, third, etc. herein,
But these elements or signal should not be limited by these terms.These terms are to distinguish an element and another element, Huo Zheyi
Signal and another signal.In addition, as used herein, term "or" may include depending on actual conditions and associated list project
Any of or multiple all combinations.
First embodiment
Firstly, first embodiment of the invention provides a kind of gas measurement device Q shown in please referring to Fig.1 to Fig.4 comprising
One cavity module 1, a light emitting module 2, an optical sensing module 3 and a substrate module 4.Light emitting module 2 and optical sensing module 3 can
It is electrically connected in substrate module 4, in addition, substrate module 4 can also be with a display unit (not shown), a control unit
(not shown) and a processing unit (not shown) are electrically connected.For example, light emitting module 2 can be infrared to generate
The infrared optical emitters of linear light source, optical sensing module 3 are infrared ray sensor, may be, for example, single channel infrared ray sensing
Device or binary channels infrared ray sensor (one of infrared ray collection window can be used to detection gas concentration, and in addition one
A infrared ray collection window can be used to detect infrared light sources whether aging the problem of, and with the function of mutually correcting), but
It is that invention is not limited thereto.
Whereby, gas measurement device Q provided by the embodiment of the present invention can measure the concentration of gas to be detected either
Other properties, subsidiary one mentions, and gas to be detected can be the group of carbon dioxide, carbon monoxide or carbon dioxide and carbon monoxide
It closes, the present invention is not limitation with gas to be detected.In other words, it can be surveyed by different light emitting modules 2 and optical sensing module 3
Measure different gas to be detected.For example, for measure gas concentration, using the wavelength changed on optical sensing module 3
Filter (filter plate) and measure different gas to be detected.
Then, also referring to shown in Fig. 5 to Fig. 6, cavity module 1 has a sample space S, and cavity module 1 includes
One optically focused cavity 11, one accommodates cavity 12 and one is connected to optically focused cavity 11 and accommodates the sampling cavity 13 between cavity 12.Hair
Optical module 2 may include a luminescence unit 21, and luminescence unit 21 may be disposed on optically focused cavity 11 and correspond to optically focused cavity 11, with
Generate a light T for being projected to optically focused cavity 11, such as infrared ray light.Optical sensing module 3 may include a light sensing unit 31,
Light sensing unit 31 may be disposed in accommodating cavity 12, to receive light T caused by luminescence unit 21.
In addition, as shown in Figures 1 to 4, cavity module 1 can be made of epicoele module 1a and cavity of resorption module 1b, with
Convenient for manufacturing and assembling.For example, epicoele module 1a and cavity of resorption module 1b can utilize locking part (not shown) spiral shell
It locks in fixation hole K1, to combine epicoele module 1a and cavity of resorption module 1b.Cavity module 1 also can use locking part (figure
In be not shown) be screw-locked in fixation hole K2, cavity module 1 is fixed in substrate module 4.Subsidiary one mentions, and substrate module 4 can
For a printed circuit board (Printed Circuit Board, PCB), light emitting module 2 may also include a connecting line 22, light sensing
Module 3 may also include a connecting line 32.The connecting line 22 of light emitting module 2 and the connecting line 32 of optical sensing module 3 can pass through welding
Luminescence unit 21 and light sensing unit 31 are firmly fixed in substrate module 4 by mode, cause contact not to prevent external force
Good situation generates.
Then, please refer to shown in Fig. 5, sampling cavity 13 can have a rectangular shape, such as rectangle, but this hair
It is bright to be not limited.A reflecting layer can be equipped with (in figure by sampling 13 inner surface 133 (each surface inside sampling cavity 13) of cavity
It is not shown), reflecting layer can be formed in sampling cavity 13 by metal plating mode or plastic cement plating mode, and reflecting layer can be by
Mixture containing metal, nickel metal or golden metal and nickel metal is formed.Whereby, the sampling cavity 13 of rectangular shape as
Same rectangular optical integrator, its working principle is that light T caused by light emitting module 2 passes through the reflecting layer in sampling cavity 13
The roundtrip in sampling cavity 13, so that light T caused by light emitting module 2 carries out the intensity of light source in sampling cavity 13
It is overlapped mutually, the light to stack up is uniformly distributed.
Hold above-mentioned, referring to shown in Fig. 1 to Fig. 5, sampling cavity 13 includes that one first opening 131, one corresponds to the
132, one first surface 1331 of the second opening of one opening 131 and a second surface 1332 corresponding to first surface 1331.
First opening 131 is connected to optically focused cavity 11, and the second opening 132 is connected to accommodating cavity 12, first surface 1331 and second
Surface 1332 is set between the first opening 131 and the second opening 132.In addition, first surface 1331 and second surface 1332 can
It faces each other.In addition, sampling cavity 13 still further comprises a third surface (unlabeled in figure) and one corresponding to third table
4th surface (unlabeled in figure) in face, and third surface can be faced each other with the 4th surface.In other words, first surface 1331
And second surface 1332 is respectively the upper surface and the lower surface for sampling cavity 13, third surface and the 4th surface are respectively to adopt
The left-hand face and right lateral surface of sample cavity 13.
Hold above-mentioned, referring to shown in Fig. 1 to Fig. 5, sampling cavity 13 is further provided with one or more vertical
It may be disposed at through sampling 13 first surface 1331 of cavity or the gaseous diffusion cell 134 of second surface 1332, gaseous diffusion cell 134
It samples between the first opening 131 and the second opening 132 of cavity 13.In addition, gaseous diffusion cell 134 is rectangular shape, with
For Fig. 5, the section shape of gaseous diffusion cell 134 can be in the shape of a V-shape, so that gas to be detected passes through Bernoulli effect
(Bernoulli's principle), when gas being allowed to flow through the gaseous diffusion cell 134 of shape of V-shape, because of V-shape shape
The caliber size of gaseous diffusion cell 134 change, and gas flow rate is allowed to become faster, so that gas diffusion is more quick and allows when measuring
Between shorten.Furthermore, it is understood that cavity module 1 still further comprises a gas filtration film 16 being arranged on gaseous diffusion cell 134,
For example, gas filtration film 16 can be a waterproof ventilated membrane, and the suspended particulates that can avoid gas to be detected enter cavity module 1
In the middle, it causes 1 internal contamination of cavity module or influences measurement accuracy.
Then, referring to shown in Fig. 1, Fig. 3 and Fig. 5, for first embodiment of the invention, cavity module 1 also into
One step includes a light guide section 14 being set between sampling cavity 13 and accommodating cavity 12, and light guide section 14 can have a light guiding surface
141, light T caused by luminescence unit 21 to be reflexed in light sensing unit 31 by light guiding surface 141.For example, it leads
It is a reflecting mirror that aforementioned reflecting layer (not shown) or light guiding surface 141 can be coated in smooth surface 141, the present invention not with
This is limited.In addition, cavity module 1 can also further comprise a fluting 15, fluting 15 may connect to light guide section 14 and accommodating cavity
Between 12.It uses so that sampling predetermined altitude H apart between the second surface 1332 of cavity 13 and light sensing unit 31.
Whereby, the mode that light T caused by luminescence unit 21 can be substantially L-shaped is projected to light sensing unit by luminescence unit 21
On 31.It is noted that can also be not provided with and lead in other embodiments (embodiment as shown in Figure 12 to Figure 14)
Light portion 14, and make light T caused by luminescence unit 21 by the repeatedly anti-of first surface 1331 and second surface 1332
It is directly projected in light sensing unit 31 after penetrating.
Then, please refer to the light T's that shown in Fig. 6 to Fig. 8, luminescence unit 21 described further below is projected
The structural relation in path and cavity module 1.Specifically, optically focused cavity 11 can have one first catoptric arrangement 111, one to be connected to
Second catoptric arrangement 112 of the first catoptric arrangement 111 and one be connected to the first catoptric arrangement 111 third catoptric arrangement 113,
And first catoptric arrangement 111 may be disposed between the second catoptric arrangement 112 and third catoptric arrangement 113.For example, first is anti-
The curvature three for penetrating the curvature of structure 111, the curvature of the second catoptric arrangement 112 and third catoptric arrangement 113 is different.With
For the embodiment of the present invention, the first catoptric arrangement 111 can have an elliptical curvature curved surface E, and the second catoptric arrangement 112 can have one
Positive round curvature surface C, third catoptric arrangement 113 can have a parabolic curvature curved surface P.Whereby, the first catoptric arrangement 111 has
One first focus E1 and one corresponds to the second focus E2 of the first focus E1, and the second catoptric arrangement 112 has a central point O, the
Three catoptric arrangements 113 have a focus F.The central point O of first focus E1 of the first catoptric arrangement 111, the second catoptric arrangement 112
And the focus F of third catoptric arrangement 113 can correspond to each other setting.For example, the first focus E1, central point O and coke
Point F can be overlapping one another, but invention is not limited thereto, in other embodiments, the first focus E1, central point O with
Focus F can be neighboringly arranged very much.In addition, luminescence unit 21 can correspond to the first focus E1, central point O and focus F and set
It sets.Preferably, luminescence unit 21 can be directly arranged on the first focus E1, central point O and focus F.
Hold above-mentioned, referring to shown in Fig. 6 to Fig. 8, a light T caused by light emitting module 2 includes one being projeced into the
The second throw light T21 and one that first throw light T11 of one catoptric arrangement 111, one are projeced into the second catoptric arrangement 112
It is projeced into the third throw light T31 of third catoptric arrangement 113.First throw light T11, second caused by luminescence unit 21
It is anti-that throw light T21 and third throw light T31 can pass through respectively the first catoptric arrangement 111, the second catoptric arrangement 112, third
After penetrating the reflection of inner surface 133 of structure 113 and sampling cavity 13, and it is respectively formed and projects on optical sensing module 3 and by light
3 institute received first of sensing module receives light T13, the second reception light T24 and third and receives light T33.
Hold it is above-mentioned, as shown in fig. 6, the optical path that will first illustrate that luminescence unit 21 is incident upon on the first catoptric arrangement 111 below
Diameter.Specifically, the first throw light T11 can be projected to the second focus by the reflection of the first catoptric arrangement 111 to form one
The first reflection light T12 of E2, whereby, the inner surface 133 in the first reflection light T12 and sampling cavity 13 is (with of the invention real
For applying example, sampling cavity 13 can be rectangle, and can be by first surface 1331, second surface 1332, third surface and the
Four surfaces are formed, however, in other embodiments, the cross section of sampling cavity 13 may be pentagonal cross section,
The either cross section of hexagon, that is, sampling cavity 13 can be the cross section with polygonal shape) mutual cooperation, it can be with
One is formed to be projected on light sensing unit 31 and receive light T13 by 31 institute received first of light sensing unit.In other words,
One reflection light T12 can reflect to form be projected to light sensing unit 31 the repeatedly by each surface in sampling cavity 13
One receives light T13.For first embodiment of the invention, the first reflection light T12 can pass through the inner surface of sampling cavity 13
And the reflection and being formed of the light guiding surface 141 of light guide section 14 is projected to the first of light sensing unit 31 and receives light T13.
It holds above-mentioned, please refers to shown in Fig. 7, will then illustrate that luminescence unit 21 is incident upon on the second catoptric arrangement 112 below
Light path.Specifically, the second throw light T21 passes through the reflection of the second catoptric arrangement 112, is projected to first to form one
Second reflection light T22, the second reflection light T22 of catoptric arrangement 111 passes through the reflection of the first catoptric arrangement 111, to be formed
One be projected to the second focus E2 third reflection light T23, third reflection light T23 and sampling cavity 13 in inner surface it is mutual
Cooperation is projected on light sensing unit 31 and with forming one by the received second reception light T24 of 31 institute of light sensing unit.Change sentence
It talks about, third reflection light T23 can reflect to be formed repeatedly by the inner surface 133 in sampling cavity 13 is projected to light sensing list
The second of member 31 receives light T24.For first embodiment of the invention, third reflection light T23 can be by sampling cavity 13
Inner surface 133 and the reflection and being formed of light guiding surface 141 of light guide section 14 be projected to the second of light sensing unit 31 and receive light
Line T24.It should be noted that the second reflection light T22 can be anti-by the central point O and first of the second catoptric arrangement 112 in principle
The first focus E1 of structure 111 is penetrated, still, to avoid confusion, the second shown reflection light T22 in Fig. 7, not by the
The mode of one focus E1 is presented.
It holds above-mentioned, please refers to shown in Fig. 8, will then illustrate that luminescence unit 21 is incident upon on third catoptric arrangement 113 below
Light path.Specifically, third throw light T31 passes through the reflection of third catoptric arrangement 113, is projected to light sensation to form one
It surveys on unit 31 and light T33 is received by the 31 received third of institute of light sensing unit.For first embodiment of the invention, third
Throw light T31 can be initially formed one the 4th reflection light T32, the 4th reflection light by the reflection of third catoptric arrangement 113
T32 can form the third reception light T33 for being projected to light sensing unit 31 by the reflection of the light guiding surface 141 of light guide section 14.
Then, referring to shown in Fig. 5, specifically, for first embodiment of the invention, light guide section 14 can be connected
Between the second opening 132 and accommodating cavity 12, the light guiding surface 141 of light guide section 14 can tilt one relative to a horizontal axis HH and be situated between
The light guiding surface 141 of predetermined angle theta or light guide section 14 between 30 degree to 60 degree relative to light sensing unit 31 first
The predetermined angle theta of surface 1331 or the inclination one of second surface 1332 between 30 degree to 60 degree.In other words, light sensing unit
31 first surface 1331 or second surface 1332 can be parallel to each other with horizontal axis HH.Preferably, predetermined angle theta can be 45
Degree.Furthermore it is preferred that fluting 15 may connect between light guide section 14 and accommodating cavity 12.For Fig. 5, fluting 15 has one
Preset width W has a predetermined altitude H between the second surface 1332 and light sensing unit 31 of the second opening 132, in advance
Fixed width degree W and predetermined altitude H meet following equation: (0.8 × W)≤H≤(3 × W), and wherein H is predetermined altitude H, and W is pre- fixed width
Spend W.
Further, also referring to shown in Fig. 5 and Fig. 9 to Figure 11, adjacent to the first surface 1331 of the first opening 131
And have between second surface 1332 can one first preset distance L1, adjacent to the first surface 1331 and the of the second opening 132
There is one second preset distance L2 between two surfaces 1332.For the embodiment of the present invention, in order to change the first reflection light T12
Or third reflection light T23 is incident upon the angle on light sensing unit 31, the first preset distance L1 and the second preset distance L2
It can be different.Preferably, the second preset distance L2 is greater than the first preset distance L1.Whereby, the sectional area of the first opening 131 can be small
In the sectional area of the second opening 132.Furthermore predetermined altitude H and the second preset distance L2 may conform to following equation: (0.8 × L2)
≤ H≤(3 × L2), wherein H is predetermined altitude H, and L2 is the second preset distance L2.In other words, preset width W can be equal to the
Two preset distance L2.
In addition, for example, for first embodiment of the invention, the cross-sectional area of rectangularly-sampled cavity 13 preferably can be big
In or equal to light sensing unit 31 sensing area.Furthermore since the size of current binary channels infrared ray sensor is about 4
Millimeter (millimeter, mm) × 2 millimeter (mm), therefore the second preset distance L2 can be 2.1 millimeters (mm), and preset width
W can also be equal to the size of the second preset distance L2, but invention is not limited thereto, in other embodiments, pre- fixed width
The size for spending W can also be between the distance between (1.1 × L2) to (2.3 × L2).Predetermined altitude H can be between 1 millimeter
(mm) between 2 millimeters (mm), it is highly preferred that can be 1.5 millimeters (mm), but invention is not limited thereto.
Then, referring to shown in Fig. 9 to Figure 11, Fig. 9 is both first surface 1331 and second surface 1332 in flat
The embodiment of row setting, that is, size of the size of the second preset distance L2 equal to the first preset distance L1 and the first opening 131
Sectional area be equal to second opening 132 sectional area.Figure 10 is both first surface 1331 and second surface 1332 in non-parallel
The embodiment of setting, that is, both the first preset distance L1 and the second preset distance L2 difference or the first opening 131
Sectional area of the sectional area less than the second opening 132.It will be described below influence of both embodiments to light path.
Specifically, referring to shown in Fig. 9, light emitting module 2 can have one first central axis C1, the first central axis C1
It may pass through the light source center point (not shown) of luminescence unit 21.Optical sensing module 3 can have an one second central axis C2, and second
Central axis C2 may pass through the central point for being used to receive light source in optical sensing module 3.For first embodiment of the invention, in first
Mandrel C1 is mutually perpendicular to the second central axis C2, however, being not limited thereto in other embodiments.
Furthermore, it is understood that being 45 degree referring to shown in Fig. 9 below with the predetermined angle theta of light guiding surface 141 and being said
It is bright, meanwhile, the following contents is only to illustrate that the sectional area of the first opening 131 is equal to the sectional area or the first opening of the second opening 132
131 sectional area less than the second opening 132 sectional area otherness between the two, and not particular to the first throw light
T11, the second throw light T21 and third throw light T31 are illustrated.That is, by the selection of sectional area size, it can
It is had an impact with receiving light T33 to the first reception light T13, the second reception light T24 and third.
Specifically, as shown in figure 9, light T may include a projection light T01 for being projeced into first surface 1331, projection light
Reflection of the T01 by first surface 1331 and second surface 1332, the incident light being projected to formation one on light guiding surface 141
T02, incident light T02 pass through the reflection of light guiding surface 141, are projected to forming one on optical sensing module 3 and by 3 institute of optical sensing module
Received reception light T03.There is a projectional angle α between projection light T01 and the first central axis C1, receive light T03 and the second center
There is an acceptance angle β between axis C2, there is an incidence angle λ between incident light T02 and the first central axis C1.With the embodiment of Fig. 9
For, the projectional angle α between projection light T01 and the first central axis C1 can be equal between incident light T02 and the first central axis C1
Incidence angle λ.Then, after reflection of the incident light T02 by 45 degree of light guiding surface 141, it can be formed and be projected on optical sensing module 3
And by the 3 received reception light T03 of institute of optical sensing module.And the acceptance angle β between light T03 and the second central axis C2 is received, it can be because
It is parallel to each other for first surface 1331 and second surface 1332 and light guiding surface 141 is 45 degree, and make incidence angle λ and projectional angle α
It is identical, and acceptance angle β also can be identical as projectional angle α.
Then, it please refers to shown in Figure 10 and Figure 11, the pre- spacing of the first preset distance L1 and second described further below
From both L2 difference, and the second preset distance L2 is greater than the embodiment of the first preset distance L1, that is, first surface 1331 and the
Two surfaces 1332 are in non-parallel setting.For the embodiment of the present invention, projection light T01 is in first surface 1331 and second surface
N times are reflected between 1332.Between first surface 1331 and horizontal axis HH and in second surface 1332 and horizontal axis HH
Between be respectively provided with an oblique angle γ.In addition, projection light T01 can by the reflection of first surface 1331 and second surface 1332,
Can be formed reflection lights that M reflects between first surface 1331 and second surface 1332 (such as: the first reflected light R1, the
Two reflected light R2, third reflected light R3), the angle between m-th reflection light and the first central axis C1 is reflected less than the M-1
Angle between light and the first central axis C1.Stated differently, since first surface 1331 and second surface 1332 are all with first
It is in an oblique angle γ between central axis C1, therefore, the angle between the latter reflection light and the first central axis C1 can be less than previous
The angle of a reflection light and the first central axis C1.Whereby, compared to both the first preset distance L1 and the second preset distance L2
In identical situation, in the case where the second preset distance L2 is greater than the first preset distance L1, optical sensing module 3 can be further
Receive more infrared rays.
For example, as shown in Figure 10 and 11, below be 45 degree with the predetermined angle theta of light guiding surface 141, oblique angle γ is 0.5
Degree, projectional angle α are 20 degree and are illustrated.Specifically, light T includes a projection light T01 for being projeced into first surface 1331, is thrown
Light T01 is penetrated by the reflection of first surface 1331 and second surface 1332, to form the incidence being projected on light guiding surface 141
Light T02, incident light T02 pass through the reflection of light guiding surface 141, are projected to forming one on optical sensing module 3 and by optical sensing module 3
The received reception light T03 of institute.Whereby, after by the reflection of first surface 1331 and second surface 1332, incident light T02 and first
Can have one between central axis C1 is 16 degree of incidence angle λ.Incident light T02 with 16 degree of incidence angle λ passes through 45 degree of leaded light
After the reflection in face 141, a reception light T03 with 16 degree of acceptance angle β can be formed.In addition, it should be noted that, the present invention is not to throw
20 degree of firing angle are critical value, and 20 degree are only for example, and in other embodiments, different light sensing units 31, which can have, to be different from
20 degree of preferred incidence angle.It should be noted that actual angle calculation mode illustrates after holding.
Second embodiment
Firstly, please referring to shown in Figure 12 and Figure 13, by Figure 12 it is found that second embodiment is implemented with first compared with Fig. 9
Example it is maximum the difference is that: cavity module 1 provided by second embodiment can not have light guide section 14 and fluting 15, but directly
Light T caused by luminescence unit 21 is projected on light sensing unit 31.In other words, light emitting module 2 can have one first
Central axis C1, the first central axis C1 may pass through the light source center point (not shown) of luminescence unit 21.Optical sensing module 3 can have
There is one second central axis C2, the second central axis C2 to may pass through the central point for being used to receive light source in optical sensing module 3.It is worth explanation
, for second embodiment of the invention, the first central axis C1 is parallel to each other and coaxial with the second central axis C2, however, this
Invention is not limited.In addition, it should be noted that, the other structures of gas measurement device Q provided by second embodiment are with before
It is similar to state embodiment, details are not described herein.
In addition, Figure 12 is the embodiment that both first surface 1331 and second surface 1332 are set in parallel, that is, second
The sectional area of size of the size of preset distance L2 equal to the first preset distance L1 and the first opening 131 is equal to the second opening 132
Sectional area.Figure 13 is the embodiment that both first surface 1331 and second surface 1332 are in non-parallel setting, that is, first is pre-
Both set a distance L1 and the second preset distance L2 difference.It will be described below influence of both embodiments to light path.
Hold it is above-mentioned, as shown in figure 12, between projection light T01 and the first central axis C1 have a projectional angle α, receive light T03
There is an acceptance angle β between the second central axis C2.It should be noted that due to the first preset distance L1 and the second preset distance L2
The two is identical, that is, and the first surface 1331 of sampling cavity 13 is parallel to second surface 1332, so, it is based on reflection law, works as throwing
When the angle of firing angle α is 20 degree, the angle of acceptance angle β is also still 20 degree.
Hold it is above-mentioned, as shown in figure 13, close to optical sensing module 3 second opening 132 the second preset distance L2 size
Greater than the size of the first preset distance L1 of the first opening 131 close to light emitting module 2.Specifically, light T equally also includes
One be projeced into the first surface 1331 projection light T01 (or: the first projection light T011) and by optical sensing module 3 connect
The reception light T03 (or: first receive light T031) of receipts.There is a projectional angle α between projection light T01 and the first central axis C1
(or: the first projectional angle α 1), receive light T03 and the second central axis C2 between have an acceptance angle β (or: the first acceptance angle β
1).It is worth noting that the first central axis C1 can be parallel to a horizontal axis HH for the embodiment of the present invention.
Hold above-mentioned, referring to shown in Figure 13, for the embodiment of the present invention, projection light T01 is in first surface 1331
And n times are reflected between second surface 1332.Between first surface 1331 and horizontal axis HH and in second surface 1332
An oblique angle γ is respectively provided between horizontal axis HH.Acceptance angle β between reception light T03 and the second central axis C2 meets following
Relational expression: β=α -2 γ N, wherein α is the angle of projectional angle, and β is the angle of acceptance angle, and γ is the angle at oblique angle, and N is reflection time
Number.It should be noted that oblique angle γ can be between 0.1 degree to 5 degree, preferably between 0.3 degree to 3 for being implemented with the present invention
Between degree, more preferably 0.5 degree, but invention is not limited thereto.
In addition, reflection of the projection light T01 by first surface 1331 and second surface 1332, can form M first
Reflected between surface 1331 and second surface 1332 reflection light (such as: the first reflected light R1, the second reflected light R2, third
Reflected light R3), the angle between m-th reflection light and the first central axis C1 is less than the M-1 reflection light and the first center
Angle between axis C1.Stated differently, since first surface 1331 and second surface 1332 are all between the first central axis C1
One oblique angle γ, therefore, angle between the latter reflection light and the first central axis C1 can be less than previous reflection light and the
The angle of one central axis C1.
It is illustrated below with a concrete instance, it is assumed that the angle of the projectional angle α between projection light T01 and the first central axis C1
Degree is 20 degree, and oblique angle γ is 0.5 degree, then can have between projection light T01 and first surface 1331 angle for 19.5 degree the
One angle δ 1.Projection light T01 is projected to the first anti-of second surface 1332 by that after the reflection of first surface 1331, can form one
Penetrate light R1.Based on reflection law, equally with that an angle is 19.5 degree between the first reflected light R1 and first surface 1331
Two angle δs 2, and the third angle δ 3 for being then 19 degree with an angle between the first reflected light R1 and the first central axis C1.First
After the reflection that reflected light R1 passes through second surface 1332, a second reflected light R2 for being projected to first surface 1331 can be formed.The
The fourth angle δ 4 for being 18 degree with an angle between two reflected light R2 and the first central axis C1.Second reflected light R2 passes through first
After the reflection on surface 1331, a third reflected light R3 for being projected to second surface 1332 can be formed.Third reflected light R3 and first
Can have an angle between central axis C1 is 17 degree of the 5th angle δ 5.Third reflected light R3 passes through the reflection of second surface 1332
Afterwards, can be formed one be projected to optical sensing module 3 and by the 3 received reception light T03 of institute of optical sensing module.Receive light T03 and first
The acceptance angle β for being 16 degree with an angle between central axis C1.
It is noted that the first central axis C1 is coaxial with the second central axis C2 for first embodiment of the invention, because
This, receives the acceptance angle β for being also 16 degree with an angle between light T03 and the second central axis C2.In addition, projection light T01 passes through
The order of reflection of first surface 1331 and second surface 1332 is 4 times (that is, encountering first surface 1331 and second surface 1332 altogether
Total degree).In other words, if passing through above-mentioned relation formula: after β=α -2 γ N calculating, can be received angle beta is 20
Degree-(2 × 0.5 × 4) degree, it is 16 degree that acceptance angle β, which can be obtained,.Furthermore the folder between the second reflected light R2 and the first central axis C1
Angle, also can be less than the angle between the first reflected light R1 and the first central axis C1.
It should be noted that compared in the identical situation of both the first preset distance L1 and the second preset distance L2,
In the case that two preset distance L2 are greater than the first preset distance L1, light sensing unit 31 can further receive more infrared rays
Light.In other words, receiving light T03 preferably is preferred vertically into light sensing unit 31.In addition, it should be noted that, projectional angle α
It is only for example for 20 degree, invention is not limited thereto.In other words, different optical sensing modules 3 has different preferred receptions
Angle beta.In addition, it is noted that for the embodiment of the present invention, the distance between 131 to the second opening 132 of the first opening
The length of cavity 13 (that is, sampling) can be between 35 millimeters (millimeter, mm) to 50 millimeters (mm), but the present invention is not
As limit.
Then, it please refers to shown in Figure 14, will be described below when third surface 1333 and the 4th surface 1334 are respectively with first
Central axis C1 tilts the embodiment of an angle, that is, third surface 1333 and the 4th surface 1334 are in non-parallel setting.In addition,
It should be noted that third surface 1333 and the 4th surface 1334 are respectively the left-hand face and right lateral surface for sampling cavity 13.
Specifically, there is a third preset distance L3 between the third surface 1333 and the 4th surface 1334 of the first opening 131, second
There is one the 4th preset distance L4, the 4th preset distance L4 is big between the third surface 1333 and the 4th surface 1334 of opening 132
In third preset distance L3.
It holds above-mentioned, aforementioned paragraphs please be cooperate to the explanation of Figure 13, and please be simultaneously referring again to shown in Figure 14, light T includes
One is projeced into the first projection light T011 of first surface 1331 and is projeced into the second projection light T012 on third surface 1333.The
One projection light T011 is projected to optical sensing module 3 by the reflection of first surface 1331 and second surface 1332 to form one
Light T031 are above received by 3 institute received first of optical sensing module.Second projection light T012 passes through third surface 1333 and the
The reflection on four surfaces 1334 is projected on optical sensing module 3 and with forming one by the received second reception light of 3 institute of optical sensing module
T032.Light emitting module 2 has one first central axis C1, has one first to throw between the first projection light T011 and the first central axis C1
Firing angle α 1.There is one second projectional angle α 2 between second projection light T012 and the first central axis C1.Optical sensing module 3 has one the
Two central axis C2, first receives between light T031 and the second central axis C2 with one first acceptance angle β 1.Second receives light T032
There is one second acceptance angle β 2 between the second central axis C2.
Then, the first projection light T011 reflects N1 times between first surface 1331 and second surface 1332, and second throws
It penetrates light T012 to reflect N2 times between third surface 1333 and the 4th surface 1334, the first central axis C1 and the second central axis C2
It is parallel to a horizontal axis HH.Between first surface 1331 and horizontal axis HH and in second surface 1332 and trunnion axis
One first oblique angle γ 1 is respectively provided between line HH.Between third surface 1333 and horizontal axis HH and on the 4th surface
One second oblique angle γ 2 is respectively provided between 1334 and horizontal axis HH.First receives between light T031 and the second central axis C2
First acceptance angle β 1 meets following relationship: β 1=α 1-2 γ 1N1.Second receives the between light T032 and the second central axis C2
Two acceptance angle β 2 meet following relationship: β 2=α 2-2 γ 2N2.Wherein α 1 is the angle of the first projectional angle, and α 2 is the second projection
The angle at angle, β 1 are the angle of the first acceptance angle, and β 2 is the angle of the second acceptance angle, and γ 1 is the angle at the first oblique angle, and γ 2 is
The angle at the second oblique angle, N1 are reflection of the first projection light T011 between first surface 1331 and second surface 1332 time
Number, N2 are order of reflection of the second projection light T012 between third surface 1333 and the 4th surface 1334.
It should be noted that reflection mode of the second projection light T012 between third surface 1333 and the 4th surface 1334,
Similar in first surface 1331 and second surface with aforementioned first projection light T011, details are not described herein.Therefore, the second projectional angle
α 2, the second acceptance angle β 2 and the second oblique angle γ 2 are also as aforementioned first projectional angle α 1, the first acceptance angle β 1 and first are oblique
Embodiment described in angle γ 1.However, it is worth noting that, since the sample space S of sampling cavity 13 is a rectangular shape
Cross section, size of the size also greater than the first preset distance L1 of third preset distance L3, and the size of the 4th preset distance L4
Also greater than the size of the second preset distance L2.Whereby, the second oblique angle γ 2 can be between 0.1 degree to 5 degree, preferably between 1 degree
To between 3 degree, more preferably 1.5 degree, but invention is not limited thereto.
Further, above description please be cooperate and simultaneously referring again to shown in Figure 10 and Figure 11, in aforementioned first embodiment
In, light guiding surface 141 tilts a predetermined angle theta relative to a horizontal axis HH, and throw light T1 is in first surface 1331 and the
N times are reflected between two surfaces 1332, the first central axis C1 is parallel to a horizontal axis HH, in first surface 1331 and horizontal axis
An oblique angle γ, incident light T02 and the first center are respectively provided between HH and between second surface 1332 and horizontal axis HH
Incidence angle λ between axis C1 meets following relationship: λ=α -2 γ N, and wherein α is the angle of projectional angle, and λ is the angle of incidence angle
Degree, γ are the angle at oblique angle, and N is order of reflection.
In addition, it should be noted that, the other structures of gas measurement device provided in second embodiment and aforementioned implementation
Example is similar, and the embodiment of previous embodiment all can be applied to second embodiment, and therefore, details are not described herein.
3rd embodiment
Firstly, please referring to shown in Figure 15 to Figure 18, by Figure 15 it is found that 3rd embodiment is implemented with first compared with Fig. 1
Example it is maximum the difference is that: the sampling cavity 13 in gas measurement device Q provided by 3rd embodiment can have different shapes
Shape, in addition, optically focused cavity 11 can only have the first catoptric arrangement 111 and the second catoptric arrangement 112, and the first catoptric arrangement
111 curvature and the curvature of the second catoptric arrangement 112 are different from each other, and the setting of 113 property of can choose of third catoptric arrangement.Separately
Outside, it should be noted that, the other structures with previous embodiment of gas measurement device Q provided by second embodiment are similar, herein
It repeats no more.
Referring to shown in Figure 15 to Figure 18, and together refering to fig. 1 shown in 9, specifically, gas measurement device Q can
Including a cavity module 1, a light emitting module 2, an optical sensing module 3 and a substrate module 4.Cavity module 1 may include one poly-
Optical cavity body 11, one accommodates cavity 12 and one is connected to optically focused cavity 11 and accommodates the sampling cavity 13 between cavity 12.With
For three embodiments, there is optically focused cavity 11 one first catoptric arrangement 111 and one to be connected to the second of the first catoptric arrangement 111
Catoptric arrangement 112.However, in other embodiments, the third that can also be further arranged as described in previous embodiment is anti-
Structure 113 is penetrated, system that invention is not limited thereto.In addition, gas measurement device Q provided in 3rd embodiment may include leading
Light portion 14, effect is as described in aforementioned first embodiment, mainly using the light guiding surface 141 being set on light guide section 14 by light
Line is directed among optical sensing module 3.
In addition, it is burnt that there is the first catoptric arrangement 111 one first focus E1 and one to correspond to first as shown in Figure 19 to Figure 20
The second focus E2 of point E1, the second catoptric arrangement 112 have a central point O, and the first focus E1 corresponds to each other with central point O to be set
It sets.First catoptric arrangement 111 has an elliptical curvature curved surface E, and the second catoptric arrangement 112 has a positive round curvature surface C.Into one
For step, light emitting module 2 may be disposed on optically focused cavity 11 and correspond to optically focused cavity 11, and light emitting module 2 includes one luminous single
Member 21, and luminescence unit 21 can correspond to the first focus E1 and central point O.Preferably, luminescence unit 21 may be disposed at the first coke
On point E1 and central point O.Furthermore optical sensing module 3 includes a light sensing unit 31, and light sensing unit 31 may be disposed at accommodating cavity
In body 12.
Furthermore, it is understood that cavity module 1 can be by epicoele module 1a and cavity of resorption module 1b institute as shown in Figure 17 and Figure 19
Composition, cavity module 1 have a sample space S (the first sample space S1 and the second sample space S2), and sampling cavity 13 can
Including one be connected to the first sampling cavity 13a of optically focused cavity 11, one be connected to accommodating cavity 12 the second sampling cavity 13b and one
The turning point 13c being connected between the first sampling cavity 13a and the second sampling cavity 13b, wherein there is a reflection on the 13c of turning point
Face 13cs.Preferably, reflecting surface 13cs can have a parabolic curvature.In addition, the first sampling cavity 13a can have a first axle
A1 and one is located at the first sample space S1 in the first sampling cavity 13a, the second sampling cavity 13b can have a second axis A2 with
And a second sample space S2 in the second sampling cavity 13b, first axle A1 are substantially set in parallel with second axis A2.
For the embodiment of the present invention, the first sampling cavity 13a, the second sampling cavity 13b and turning point 13c three can U-shaped shape,
But invention is not limited thereto.For example, in other embodiments, the first sampling cavity 13a, the second sampling cavity 13b with
And turning point 13c three can be in L shape (please referring to shown in Figure 32).
Then, referring to shown in Figure 20 to Figure 23, a light T caused by light emitting module 2 includes one being projeced into the
The second throw light T21 and one that first throw light T11 of one catoptric arrangement 111, one are projeced into the second catoptric arrangement 112
Directly it is projeced into the throw light T41 of reflecting surface 13cs.First throw light T11 caused by luminescence unit 21, the second projection
Light T21 and throw light T41 can pass through the first catoptric arrangement 111 respectively, the second catoptric arrangement 112, sample the interior of cavity 13
Surface 133 (first surface 1331, second surface 1332, third surface 1333 and the 4th surface 1334) and turning point 13c
Reflecting surface 13cs reflection after, and be respectively formed project on optical sensing module 3 first receive light T13, second receive
Light T24 and reception light T43.
Hold it is above-mentioned, as shown in figure 20, the optical path that will first illustrate that luminescence unit 21 is incident upon on the first catoptric arrangement 111 below
Diameter.Specifically, the first throw light T11 can be projected to the second focus by the reflection of the first catoptric arrangement 111 to form one
The first reflection light T12 of E2, whereby, the inner surface 133 in the first reflection light T12 and sampling cavity 13 cooperate, and
First reflection light T12 passes through the reflection of reflecting surface 13cs, is projected to forming one on light sensing unit 31 and by light sensing list
31 institute received first of member receives light T13.For third embodiment of the invention, the first reflection light T12 can pass through sampling
The reflection of the light guiding surface 141 of the inner surface 133 of cavity 13, the reflecting surface 13cs of turning point 13c and light guide section 14 and form throwing
Be incident upon light sensing unit 31 first receives light T13.
It holds above-mentioned, please refers to shown in Figure 21, will then illustrate that luminescence unit 21 is incident upon on the second catoptric arrangement 112 below
Light path.Specifically, the second throw light T21 passes through the reflection of the second catoptric arrangement 112, is projected to first to form one
Second reflection light T22, the second reflection light T22 of catoptric arrangement 111 passes through the reflection of the first catoptric arrangement 111, to be formed
One be projected to the second focus E2 third reflection light T23, third reflection light T23 and sampling cavity 13 in inner surface it is mutual
Cooperation, and third reflection light T23 passes through the reflection of reflecting surface 13cs, is projected to forming one on light sensing unit 31 and by light
31 institute received second of sensing unit receives light T24.For third embodiment of the invention, third reflection light T23 can lead to
The reflection of the light guiding surface 141 of the inner surface 133 of over-sampling cavity 13, the reflecting surface 13cs of turning point 13c and light guide section 14 and
Form the second reception light T24 for being projected to light sensing unit 31.It should be noted that the second reflection light T22 can lead in principle
The central point O of the second catoptric arrangement 112 and the first focus E1 of the first catoptric arrangement 111 is crossed, still, to avoid confusion, Figure 21
In shown the second reflection light T22, presented in a manner of not by the first focus E1.
Then, it please refers to shown in Figure 22, will then illustrate that luminescence unit 21 is directly incident upon the reflection of turning point 13c below
Light path on the 13cs of face.Specifically, the throw light T41 that luminescence unit 21 generates can directly be incident upon reflecting surface 13cs
On, and since reflecting surface 13cs is the curved surface of parabolic curvature, throw light T41 can pass through the reflection of reflecting surface 13cs
And form a reflection light T42 by the focus U of reflecting surface 13cs, and reflection light T42 can again by the reflection of reflecting surface,
And formed one be projected on light sensing unit 31 and by the received reception light T43 of the institute of light sensing unit 31.
Then, it please refers to shown in Figure 23 to Figure 25, and cooperates in aforementioned first embodiment to Fig. 5 and Fig. 9 to Figure 11 together
Explanation, path of the light described further below in the second sampling cavity 13b.Specifically, with third of the present invention implementation
For example, cavity module 1 includes a light guide section 14 being set between sampling cavity 13 and accommodating cavity 12, and light guide section 14 can have
There is a light guiding surface 141, to reflex to light T caused by luminescence unit 21 in light sensing unit 31 by light guiding surface 141.Separately
Outside, cavity module 1 can also further comprise a fluting 15, and fluting 15 may connect between light guide section 14 and accommodating cavity 12.By
So that predetermined altitude H apart between the second surface 1332 and light sensing unit 31 of sampling cavity 13.Whereby, it shines
The mode that light T can be substantially L-shaped caused by unit 21 is projected on light sensing unit 31 by luminescence unit 21.
Hold above-mentioned, referring to shown in Figure 23, the light guiding surface 141 of light guide section 14 can be tilted relative to a horizontal axis HH
The light guiding surface 141 of one predetermined angle theta or light guide section 14 between 30 degree to 60 degree is relative to light sensing unit 31
The predetermined angle theta of first surface 1331 or the inclination one of second surface 1332 between 30 degree to 60 degree.Preferably, predetermined angular
θ can be 45 degree.In addition, it is worth noting that, light guide section 14 and other features and previous embodiment of fluting 15 are similar, herein
It repeats no more.
Then, it please refers to shown in Figure 24 and 25, the first surface in the second sampling cavity 13b provided by 3rd embodiment
Both 1331 and second surface 1332 can be set in parallel or in non-parallel settings.Embodiment as of fig. 24, second
The sectional area of size of the size of preset distance L2 equal to the first preset distance L1 and the first opening 131 is equal to the second opening 132
Sectional area.Embodiment shown in Figure 25, both the first preset distance L1 and the second preset distance L2 difference, and second is predetermined
Distance L2 is greater than the first preset distance L1.
Specifically, as shown in Figure 24 and 25, the second sampling cavity 13b has a first surface 1331 and a second surface
1332, the second sampling cavity 13b have one first opening 131 and second opening 132 corresponding to the first opening 131, described
First opening 131 is connected to turning point 13c, and the second opening 132 is connected to accommodating cavity 12, the first surface of the first opening 131
There is one first preset distance L1, the first surface 1331 and the second table of the second opening 132 between 1331 and second surface 1332
There is one second preset distance L2, the second preset distance L2 to be greater than the first preset distance L1 between face 1332.In other words, first
Opening 131 sectional area less than second opening 132 sectional area, to improve the infrared ray that light sensing unit 31 can receive
Energy.It should be noted that therefore the opticpath in the second sampling cavity 13b in Figure 24 and Figure 25, please refers to figure as aforementioned
Appended drawing reference in 24 and Figure 25 simultaneously illustrates that details are not described herein to the description of Fig. 9 and Figure 10 refering in previous embodiment simultaneously.
That is, the light in the second sampling cavity 13b of gas measurement device Q provided in 3rd embodiment also complies with relationship
Formula: λ=α -2 γ N, wherein α is the angle of projectional angle, and λ is the angle of incidence angle, and γ is the angle at oblique angle, and N is order of reflection.
It holds above-mentioned, please refers to shown in Figure 26, and cooperate shown in Figure 14 together, in other embodiments, the second sampling cavity
The third surface 1333 of 13b can also be in non-parallel setting with the 4th surface 1334 relative to third surface 1333 between the two.
Specifically, there is a third preset distance L3 between the third surface 1333 and the 4th surface 1334 of the first opening 131, second
There is one the 4th preset distance L4, the 4th preset distance L4 is big between the third surface 1333 and the 4th surface 1334 of opening 132
In third preset distance L3.Whereby, by features described above, the infrared ray energy that light sensing unit 31 can receive can also be improved
Amount.Furthermore, it is understood that in other embodiments, the third surface 1333 of the first sampling cavity 13a with relative to third surface
1333 the 4th surface 1334 can also be in non-parallel setting between the two, to change the path of light, and then improve light sensing list
The infrared energy that member 31 can receive.
Then, it please refers to shown in Figure 27, by Figure 27 compared with Figure 20 to Figure 22 it is found that in the embodiment of Figure 27,
Optically focused cavity 11 can also further comprise just like third catoptric arrangement 113 described in same aforementioned first embodiment.Specifically, with
For 3rd embodiment, a light T caused by light emitting module 2 still further comprises one and is projeced into third catoptric arrangement 113
Third throw light T31.Third throw light T31 can be projected to turnover by the reflection of third catoptric arrangement 113 to form one
The 4th reflection light T32 on the reflecting surface 13cs of portion 13c, the 4th reflection light T32 can by the reflection of reflecting surface 13cs, with
One is formed to be projected on light sensing unit 31 and receive light T33 by the 31 received third of institute of light sensing unit.Preferably, it reflects
Face 13cs can be the curved surface of a parabolic curvature, and whereby, the 4th reflection light T32 being projected on reflecting surface 13cs can be first
It by the focus U of reflecting surface 13cs, then is projected on reflecting surface 13cs, is projected to forming one on light sensing unit 31 and by light
The 31 received third of institute of sensing unit receives light T33.
In addition, should be specified, the structure of the second sampling cavity 13b provided by 3rd embodiment and aforementioned first is in fact
The sampling cavity for applying example is similar, and the embodiment in first embodiment and second embodiment all can apply to 3rd embodiment
In, therefore, details are not described herein.
Fourth embodiment
Firstly, please referring to shown in Figure 28 to Figure 30, by Figure 28 it is found that fourth embodiment is implemented with second compared with Figure 15
Example it is maximum the difference is that: the accommodating cavity 12 in gas measurement device Q provided by fourth embodiment is different from that can have
Shape, in addition, optically focused cavity 11 can only have the first catoptric arrangement 111 and the second catoptric arrangement 112, and the first catoptric arrangement
111 curvature and the curvature of the second catoptric arrangement 112 are different from each other, and the setting of 113 property of can choose of third catoptric arrangement.Separately
Outside, for fourth embodiment, cavity module 1 can not have light guide section 14 and fluting 15, but directly by 21 institute of luminescence unit
After reflection of the light T of generation by the reflecting surface 13cs of turning point 13c, and it is projected on light sensing unit 31.In other words,
Light emitting module 2 can have one first central axis C1, the first central axis C1 to may pass through the light source center point of luminescence unit 21 (in figure not
It shows).Optical sensing module 3 can have one second central axis C2, and the second central axis C2, which may pass through, to be used to receive in optical sensing module 3
The central point of light source.It is worth noting that for second embodiment of the invention, the first central axis C1 and the second central axis C2 phase
It is mutually parallel.It should be noted that the other structures with previous embodiment of gas measurement device Q provided by fourth embodiment are similar,
Details are not described herein.
Then, it please refers to shown in Figure 30 and Figure 31, the second sampling cavity 13b has a third surface 1333 and one the 4th table
Face 1334, the second sampling cavity 13b have one first opening 131 and second opening 132 corresponding to the first opening 131, institute
It states the first opening 131 and is connected to turning point 13c, the second opening 132 is connected to accommodating cavity 12, the third table of the first opening 131
There is a third preset distance L3, the third surface 1333 and the 4th of the second opening 132 between face 1333 and the 4th surface 1334
Between surface 1334 there is one the 4th preset distance L4, the 4th preset distance L4 can be greater than or equal to third preset distance L3.It changes
Sentence is talked about, and the sectional area of the first opening 131 may be less than or equal to the sectional area of the second opening 132 to improve 31 institute of light sensing unit
The infrared energy that can be received.
5th embodiment
Firstly, please referring to shown in Figure 32, as Figure 32 it is found that gasmetry provided by the 5th embodiment compared with Figure 20
Sampling cavity 13 in device Q can have different shapes.That is, the first sampling cavity 13a, the second sampling cavity 13b and
Turning point 13c three can be in L shape.
In addition, it should be noted that, the other structures and aforementioned implementation of gas measurement device provided in the 5th embodiment
Example is similar, and the embodiment of previous embodiment all can be applied to the 5th embodiment, and therefore, details are not described herein.
The beneficial effect of embodiment
Gas measurement device Q provided by the embodiment of the present invention, can utilize " optically focused cavity 11 have one first reflection knot
The second catoptric arrangement 112 and one that structure 111, one is connected to the first catoptric arrangement 111 is connected to the of the first catoptric arrangement 111
Three catoptric arrangements 113, wherein the first catoptric arrangement 111 is set between the second catoptric arrangement 112 and third catoptric arrangement 113 "
Technical solution, or " sampling cavity 13 includes one being connected to the first sampling cavity 13a of optically focused cavity 11, one being connected to accommodating
Second sampling cavity 13b of cavity 12 and one is connected to the turning point 13c between the first sampling cavity 13a and the second sampling cavity 13b,
Wherein, with the technical solution of a reflecting surface 13cs " on the 13c of turning point, and the collection photosensitiveness of cavity module 1 can be improved, while
Gas measurement device Q can be miniaturized.
Content disclosed above is only preferred possible embodiments of the invention, not thereby limits to right of the invention and wants
The protection scope of book is sought, so all equivalence techniques variations done with description of the invention and accompanying drawing content, are both contained in
In the protection scope of claims of the present invention.
Claims (34)
1. a kind of gas measurement device, which is characterized in that the gas measurement device includes:
One cavity module, the cavity module are connected to the optically focused cavity including an optically focused cavity, an accommodating cavity and one
And the sampling cavity between the accommodating cavity, wherein the optically focused cavity is connected to described with one first catoptric arrangement, one
Second catoptric arrangement of the first catoptric arrangement and one be connected to first catoptric arrangement third catoptric arrangement, wherein institute
The first catoptric arrangement is stated to be set between second catoptric arrangement and the third catoptric arrangement；
One light emitting module, the light emitting module are set on the optically focused cavity, and the light emitting module includes a luminescence unit,
Described in luminescence unit correspond to the optically focused cavity；And
One optical sensing module, the optical sensing module include a light sensing unit, and the light sensing unit is set to the accommodating
In cavity.
2. gas measurement device according to claim 1, which is characterized in that the curvature of first catoptric arrangement, described
The curvature three of the curvature of second catoptric arrangement and the third catoptric arrangement is different.
3. gas measurement device according to claim 2, which is characterized in that first catoptric arrangement has one first coke
Point and second focus corresponding to first focus, second catoptric arrangement have a central point, and the third is anti-
Structure is penetrated with a focus, first focus, the central point and the focus correspond to each other setting.
4. gas measurement device according to claim 3, which is characterized in that it is burnt that the luminescence unit corresponds to described first
Point, the central point and the focus.
5. gas measurement device according to claim 4, which is characterized in that it is burnt that the luminescence unit is set to described first
In point, the central point and the focus.
6. gas measurement device according to claim 2, which is characterized in that first catoptric arrangement has an oval song
Rate curved surface, second catoptric arrangement have a positive round curvature surface, and the third catoptric arrangement has a parabolic curvature bent
Face.
7. gas measurement device according to claim 1, which is characterized in that the sampling cavity is connected to described including one
First sampling cavity of optically focused cavity, one be connected to it is described accommodating cavity the second sampling cavity and one be connected to it is described first sampling
Turning point between chamber and second sampling cavity.
8. gas measurement device according to claim 7, which is characterized in that first sampling cavity, second sampling
Chamber and the U-shaped shape of turning point three.
9. gas measurement device according to claim 1, which is characterized in that the sampling cavity have one first opening with
And second opening corresponding to first opening, first opening are connected to the optically focused cavity, second opening
It is connected to the accommodating cavity, the sectional area of first opening is less than the sectional area of second opening.
10. gas measurement device according to claim 1, which is characterized in that the sampling cavity has a first surface
And a second surface, the sampling cavity have one first opening and one correspond to the second opening of first opening,
First opening is connected to the optically focused cavity, and second opening is connected to the accommodating cavity, first opening
Between the first surface and the second surface have one first preset distance, it is described second opening the first surface and
There is one second preset distance, second preset distance is greater than first preset distance between the second surface.
11. gas measurement device according to claim 10, which is characterized in that the cavity module still further comprises one
The light guide section being set between the sampling cavity and the accommodating cavity, adjacent to the second surface of second opening
There is a predetermined altitude between the light sensing unit, the predetermined altitude and second preset distance meet following public affairs
Formula: (0.8 × L2)≤H≤(3 × L2), wherein H is the predetermined altitude, and L2 is second preset distance.
12. gas measurement device according to claim 1, which is characterized in that the sampling cavity include one first opening,
One corresponds to the second opening, a first surface and the second surface corresponding to the first surface of first opening,
First opening is connected to the optically focused cavity, and second opening is connected to the accommodating cavity, the first surface with
And the second surface is set between first opening and second opening, the first surface and the second surface
In non-parallel setting.
13. gas measurement device according to claim 1, which is characterized in that the cavity module still further comprises one
The light guide section being set between the sampling cavity and the accommodating cavity, the light guide section have a light guiding surface, the leaded light
Predetermined angular of the face relative to horizontal axis inclination one between 30 degree to 60 degree.
14. gas measurement device according to claim 1, which is characterized in that the cavity module still further comprises one
The light guide section and a fluting, the fluting being set between the sampling cavity and the accommodating cavity are connected to the leaded light
Between portion and the accommodating cavity, the sampling cavity has a first surface and a second surface, and the fluting is pre- with one
Fixed width degree has a predetermined altitude between the second surface and the light sensing unit of the sampling cavity, described predetermined
Width and the predetermined altitude meet following equation: (0.8 × W)≤H≤(3 × W), wherein H is the predetermined altitude, and W is institute
State preset width.
15. gas measurement device according to claim 1, which is characterized in that the light emitting module is infrared optical emitters,
The optical sensing module is infrared ray sensor.
16. gas measurement device according to claim 3, which is characterized in that a light caused by the light emitting module
Including one be projeced into the first throw light of first catoptric arrangement, one be projeced into second catoptric arrangement second projection
Light and one be projeced into the third catoptric arrangement third throw light, wherein first throw light passes through described
The reflection of first catoptric arrangement, to form first reflection light for being projected to second focus, first reflection light
It cooperates with the sampling cavity, be projected on the light sensing unit with formation one and received by the light sensing unit
First receive light, wherein second throw light is projected to by the reflection of second catoptric arrangement with formation one
Second reflection light of first catoptric arrangement, second reflection light by the reflection of first catoptric arrangement, with
A third reflection light for being projected to second focus is formed, the third reflection light is mutually matched with the sampling cavity
It closes, is projected on the light sensing unit and with forming one by the received second reception light of the light sensing unit institute, wherein
The third throw light by the reflection of the third catoptric arrangement, with formed one be projected on the light sensing unit and by
The received third of the light sensing unit institute receives light.
17. a kind of gas measurement device, which is characterized in that the gas measurement device includes:
One cavity module, the cavity module are connected to the optically focused cavity including an optically focused cavity, an accommodating cavity and one
And the sampling cavity between the accommodating cavity, wherein the optically focused cavity is connected to one first catoptric arrangement and one
Second catoptric arrangement of first catoptric arrangement, wherein the sampling cavity include one be connected to the optically focused cavity the
One sampling cavity, one are connected to the second sampling cavity of the accommodating cavity and one are connected to first sampling cavity and described second
Turning point between sampling cavity, wherein there is a reflecting surface on the turning point；
One light emitting module, the light emitting module are set on the optically focused cavity, and the light emitting module includes a luminescence unit,
Described in luminescence unit correspond to the optically focused cavity；And
One optical sensing module, the optical sensing module include a light sensing unit, and the light sensing unit is set to the accommodating
In cavity.
18. gas measurement device according to claim 17, which is characterized in that the curvature of first catoptric arrangement and institute
The curvature for stating the second catoptric arrangement is different.
19. gas measurement device according to claim 17, which is characterized in that first catoptric arrangement has one first
Focus and second focus corresponding to first focus, second catoptric arrangement have a central point, and described first is burnt
Point corresponds to each other setting with the central point.
20. gas measurement device according to claim 19, which is characterized in that the luminescence unit corresponds to described first
Focus and the central point.
21. gas measurement device according to claim 20, which is characterized in that the luminescence unit is set to described first
In focus and the central point.
22. gas measurement device according to claim 19, which is characterized in that first catoptric arrangement has an ellipse
Curvature surface, second catoptric arrangement have a positive round curvature surface, the luminescence unit be set to first focus and
On the central point.
23. gas measurement device according to claim 17, which is characterized in that the reflecting surface has a parabola bent
Rate.
24. gas measurement device according to claim 17, which is characterized in that first sampling cavity has a first axle
Line, second sampling cavity have a second axis, and the first axle is set in parallel with the second axis.
25. gas measurement device according to claim 17, which is characterized in that first sampling cavity, described second are adopted
Sample chamber and the U-shaped shape of turning point three.
26. gas measurement device according to claim 19, which is characterized in that a light caused by the light emitting module
The first throw light and one for being projeced into first catoptric arrangement including one are projeced into the second of second catoptric arrangement
Throw light, wherein first throw light is projected to described the by the reflection of first catoptric arrangement, to form one
First reflection light of two focuses, first reflection light are projected to described by the reflection of the reflecting surface with formation one
Light is received on light sensing unit and by the light sensing unit institute received first, wherein second throw light passes through
The reflection of second catoptric arrangement, to form second reflection light for being projected to first catoptric arrangement, described second
Reflection light is projected to the third reflection light of second focus with formation one by the reflection of first catoptric arrangement,
The third reflection light is projected to forming one on the light sensing unit and by the light by the reflection of the reflecting surface
Sensing unit institute received second receives light.
27. gas measurement device according to claim 17, which is characterized in that second sampling cavity is opened including one first
Mouth, one correspond to the described first the second opening, a first surface and second table corresponding to the first surface being open
Face, first opening are connected to the turning point, and second opening is connected to the accommodating cavity, first opening
Between the first surface and the second surface have one first preset distance, it is described second opening the first surface and
There is one second preset distance, second preset distance is greater than first preset distance between the second surface.
28. gas measurement device according to claim 27, which is characterized in that the cavity module still further comprises one
The light guide section being set between second sampling cavity and the accommodating cavity, adjacent to second table of second opening
There is a predetermined altitude, the predetermined altitude and second preset distance meet following public affairs between face and the light sensing unit
Formula: (0.8 × L2)≤H≤(3 × L2), wherein H is the predetermined altitude, and L2 is second preset distance.
29. gas measurement device according to claim 17, which is characterized in that the cavity module still further comprises one
The light guide section being set between second sampling cavity and the accommodating cavity, the light guide section has a light guiding surface, described to lead
Predetermined angular of the smooth surface relative to horizontal axis inclination one between 30 degree to 60 degree.
30. gas measurement device according to claim 17, which is characterized in that the cavity module still further comprises one
The light guide section and a fluting being set between second sampling cavity and the accommodating cavity, the fluting are connected to described lead
Between light portion and the accommodating cavity, second sampling cavity has a first surface and a second surface, and the fluting has
One preset width has a predetermined altitude, institute between the second surface and the light sensing unit of second sampling cavity
It states preset width and the predetermined altitude meets following equation: (0.8 × W)≤H≤(3 × W), wherein H is the predetermined altitude,
W is the preset width.
31. gas measurement device according to claim 17, which is characterized in that the light emitting module is infrared light emission
Device, the optical sensing module are infrared ray sensor.
32. gas measurement device according to claim 19, which is characterized in that the optically focused cavity further has one
Be connected to the third catoptric arrangement of first catoptric arrangement, first catoptric arrangement be set to second catoptric arrangement with
Between the third catoptric arrangement.
33. gas measurement device according to claim 32, which is characterized in that the third catoptric arrangement has a parabolic
Line curvature surface.
34. gas measurement device according to claim 32, which is characterized in that a light caused by the light emitting module
Including one be projeced into the first throw light of first catoptric arrangement, one be projeced into second catoptric arrangement second projection
Light and one be projeced into the third catoptric arrangement third throw light, wherein first throw light passes through described
The reflection of first catoptric arrangement, to form first reflection light for being projected to second focus, first reflection light
By the reflection of the reflecting surface, it is projected on the light sensing unit and received by the light sensing unit institute with forming one
First receives light, wherein second throw light is projected to institute by the reflection of second catoptric arrangement to form one
State the second reflection light of the first catoptric arrangement, second reflection light is by the reflection of first catoptric arrangement, with shape
The third reflection light for being projected to second focus at one, the third reflection light by the reflection of the reflecting surface, with
It forms one to be projected on the light sensing unit and receive light by the light sensing unit institute received second, wherein described
Reflection of the third throw light by the third catoptric arrangement, the 4th reflected light being projected to formation one on the reflecting surface
Line, the 4th reflection light are projected to forming one on the light sensing unit and by institute by the reflection of the reflecting surface
It states the received third of light sensing unit institute and receives light.
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| CN107356546A (en) * | 2016-05-10 | 2017-11-17 | 热映光电股份有限公司 | Gas measurement device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107356546A (en) * | 2016-05-10 | 2017-11-17 | 热映光电股份有限公司 | Gas measurement device |
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