CN211825689U - Fluorescent oxygen sensor assembly and breathing mask with same - Google Patents
Fluorescent oxygen sensor assembly and breathing mask with same Download PDFInfo
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- CN211825689U CN211825689U CN201922127574.6U CN201922127574U CN211825689U CN 211825689 U CN211825689 U CN 211825689U CN 201922127574 U CN201922127574 U CN 201922127574U CN 211825689 U CN211825689 U CN 211825689U
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- oxygen sensor
- light source
- fluorescent oxygen
- sensor assembly
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000001301 oxygen Substances 0.000 title claims abstract description 94
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 94
- 230000029058 respiratory gaseous exchange Effects 0.000 title description 3
- 230000003287 optical effect Effects 0.000 claims abstract description 79
- 238000012545 processing Methods 0.000 claims abstract description 38
- 230000005284 excitation Effects 0.000 claims description 24
- 230000000241 respiratory effect Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 abstract description 22
- 238000001914 filtration Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- IYVLHQRADFNKAU-UHFFFAOYSA-N oxygen(2-);titanium(4+);hydrate Chemical compound O.[O-2].[O-2].[Ti+4] IYVLHQRADFNKAU-UHFFFAOYSA-N 0.000 description 1
- GGROONUBGIWGGS-UHFFFAOYSA-N oxygen(2-);zirconium(4+);hydrate Chemical compound O.[O-2].[O-2].[Zr+4] GGROONUBGIWGGS-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model discloses a fluorescence oxygen sensor subassembly and have its respirator, fluorescence oxygen sensor subassembly includes: fluorescence oxygen sensor and casing, fluorescence oxygen sensor sets up in the casing, fluorescence oxygen sensor includes: the device comprises a first light source, a first optical filter, a stress sheet and a signal processing end, wherein the first light source is suitable for emitting exciting light; the first optical filter is opposite to the first light source and is suitable for filtering the exciting light; the stress sheet is suitable for receiving the exciting light and emitting an optical signal; the signal processing end is suitable for receiving the optical signal and converting the optical signal into an electric signal. Therefore, the first light source and the ambient light are filtered under the action of the first light filter, so that the influence of stray light and ambient light on the measurement structure is reduced, the measurement result of the fluorescent oxygen sensor is more accurate and reliable, and the fluorescent oxygen sensor is suitable for accurate measurement.
Description
Technical Field
The utility model belongs to the technical field of the sensor technique and specifically relates to a fluorescence oxygen sensor and have its respirator is related to.
Background
The oxygen sensors in the prior art can be classified into electrochemical oxygen sensors, optical fiber oxygen sensors, thermomagnetic oxygen sensors, semiconductor resistance oxygen sensors, etc. according to different working principles. Currently, practical oxygen sensors mainly include lead-containing oxygen sensors, concentration cell type zirconium dioxide oxygen sensors, semiconductor resistance type titanium dioxide oxygen sensors and optical fiber oxygen sensors based on fluorescence quenching principle based on the conventional electrochemical principle, and the oxygen sensors based on different principles have different application ranges due to their characteristics. In contrast, the fluorescence oxygen sensor is well-valued by people because of its advantages of simple operation, high sensitivity, no consumption of the substance to be measured, easy miniaturization, safe use and on-line monitoring.
However, the fluorescent oxygen sensor in the prior art has a long gas circuit path, a slow gas exchange speed due to the structural configuration limitation, a simple optical path structure, a large influence by ambient light and stray light generated by at least a photoelectric element, and low measurement accuracy.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a fluorescence oxygen sensor subassembly, the measurement accuracy of fluorescence oxygen sensor subassembly is higher, can realize accurate measurement.
The utility model also provides a respirator of having above-mentioned fluorescence oxygen sensor subassembly.
According to the utility model discloses fluorescence oxygen sensor subassembly of first aspect embodiment includes: fluorescence oxygen sensor and casing, fluorescence oxygen sensor sets up in the casing, fluorescence oxygen sensor includes: the device comprises a first light source, a first optical filter, a stress sheet and a signal processing end, wherein the first light source is suitable for emitting exciting light; the first optical filter is opposite to the first light source and is suitable for filtering the exciting light; the stress sheet is suitable for receiving the exciting light and emitting an optical signal; the signal processing end is suitable for receiving the optical signal and converting the optical signal into an electric signal.
According to the utility model discloses fluorescence oxygen sensor subassembly is through setting up first light filter to filter first light source and ambient light under the effect of first light filter, with reduce parasitic light and ambient light to measurement structure's influence, thereby make fluorescence oxygen sensor's measuring result more accurate, reliable, be applicable to accurate measurement.
According to some embodiments of the invention, the fluorescent oxygen sensor further comprises: a second light source adapted to emit compensation light.
In some embodiments, a second optical filter is further disposed between the signal processing end and the stress piece, the second optical filter is disposed adjacent to the signal processing end, and the second optical filter is adapted to filter the optical signal and the compensation light.
Further, a first lens is arranged between the second optical filter and the signal processing end, and the first lens is suitable for focusing the optical signal and the compensation light.
Optionally, a second lens and a light guide column are further disposed between the first light source and the stress sheet, the second lens is suitable for focusing the excitation light, and the light guide column is suitable for guiding the light signal and the excitation light.
In some embodiments, the fluorescent oxygen sensor further comprises: a beam splitter obliquely disposed between the first lens and the second lens and adapted to reflect the excitation light toward the stressor sheet, to pass the optical signal and the compensation light.
In some embodiments, the fluorescent oxygen sensor assembly further comprises: the PCB board, the PCB board encircles and fixes on at least part of the outer peripheral face of casing, first light source, the second light source and signal processing end all sets up on the PCB board.
Further, the housing includes: the first supporting part is detachably connected with the second supporting part, and the first supporting part and the second supporting part define an accommodating groove for accommodating the first optical filter, the second optical filter, the first lens, the second lens and the beam splitter.
In some embodiments, the first supporting portion is provided with a first light hole for the first light source to extend into, and the second supporting portion is provided with a second light hole for the second light source to extend into.
Optionally, the first light hole and the first light source are connected in a sealing manner, and the second light hole and the second light source are connected in a sealing manner.
According to the utility model discloses respiratory mask of second aspect embodiment includes: the mask comprises a mask body and an outer shell, wherein the mask body is suitable for covering the mouth and the nose of a user and is provided with a fixing hole; the outer housing is adapted to receive the fluorescent oxygen sensor assembly described in the above embodiments, the outer housing is detachably connected to the fixing hole, and the stress piece of the fluorescent oxygen sensor assembly extends into the outer housing to be disposed adjacent to the user.
Further, one end of the outer shell is connected with the fixing hole, a wiring harness through hole is formed in the other end of the outer shell, the wiring harness through hole is suitable for a wiring harness to penetrate through, and the wiring harness penetrating through the wiring harness through hole is electrically connected with the fluorescent oxygen sensor assembly.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an oxygen sensor according to an embodiment of the present invention;
FIG. 2 is another schematic diagram of an oxygen sensor according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a respiratory mask according to an embodiment of the present invention;
FIG. 4 is a schematic view of a respiratory mask in cooperation with a user according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a split view of a respiratory mask according to an embodiment of the present invention.
Reference numerals:
a breathing mask (1000) is provided,
fluorescent oxygen sensor assembly 100, mask body 200, outer shell 300, wiring harness 400, seal 500,
the fluorescent oxygen sensor 110 is a sensor that senses oxygen,
a first light source 1101, a first optical filter 1102, a stress sheet 1103, a signal processing end 1104, a second light source 1105, a second optical filter 1106, a first lens 1107, a second lens 1108, a light guide 1109, a beam splitter 1110, a PCB 1111,
the housing 120 is provided with a plurality of openings,
a first supporting portion 1201, a second supporting portion 1202, a fixing groove 1203, a via 1204, a fixing post 1205, a first groove 1206, a second groove 1207, a first light transmission hole 1208, a second light transmission hole 1209, a first mounting bracket 1210, a second mounting bracket 1211, a fixing boss 1212, a fixing groove 1213,
the fixing holes 210 are formed at the positions of the fixing holes,
a wire harness via 310.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A fluorescent oxygen sensor assembly 100 according to an embodiment of the present invention is described below with reference to fig. 1-5.
As shown in fig. 1 and 2, a fluorescent oxygen sensor assembly 100 according to an embodiment of the first aspect of the present invention includes: fluorescent oxygen sensor 110 and casing 120, fluorescent oxygen sensor 110 sets up in casing 120, and fluorescent oxygen sensor 110 includes: the device comprises a first light source 1101, a first optical filter 1102, a stress sheet 1103 and a signal processing end 1104, wherein the first light source 1101 is suitable for emitting exciting light; the first filter 1102 is opposite to the first light source 1101, and the first filter 1102 is suitable for filtering exciting light; the stress patch 1103 is adapted to receive the excitation light and emit an optical signal; the signal processing terminal 1104 is adapted to receive the optical signal and convert it into an electrical signal.
Specifically, the first light source 1101 emits excitation light (the wavelength of the excitation light is 500nm to 520nm), the excitation light is reflected or directly irradiated onto the stress sheet 1103 (the stress sheet 1103 is a fluorescent sheet coated with an oxyfluorescence-sensitive luminescent material and adapted to emit fluorescence upon receiving a light stimulus), and then the optical signal (fluorescence) emitted from the stress sheet 1103 is irradiated onto the signal processing terminal 1104 (photosensor) to generate an electrical signal.
It can be understood that the first optical filter 1102 is disposed between the first light source 1101 and the stressor sheet 1103, and stray light generated by the first light source 1101 and ambient light can be filtered by the first optical filter 1102, so as to reduce the influence of the ambient light and the stray light emitted by the first light source 1101 on the measurement result.
According to the utility model discloses fluorescence oxygen sensor subassembly 100 is through setting up first light filter 1102 to filter first light source 1101 and ambient light under the effect of first light filter 1102, with reduce parasitic light and ambient light to measuring structure's influence, thereby make fluorescence oxygen sensor 110's measuring result more accurate, reliable, be applicable to accurate measurement.
It can be understood that the fluorescent oxygen sensor 110 of the present embodiment is adapted to convert the oxygen partial pressure of the environment where the fluorescent oxygen sensor 110 is located according to the intensity of the optical signal emitted by the stress sheet 1103, and the wavelength of the excitation light can be selected from the range of 500nm to 520nm, preferably 510 nm.
In the particular embodiment shown in fig. 1 and 2, the fluorescent oxygen sensor 110 further comprises: a second light source 1105, the second light source 1105 being adapted to emit compensating light.
That is, the second light source 1105 may directly illuminate or illuminate after reflection to the signal processing terminal 1104.
In this way, the compensation light is used to optically compensate the optical signal generated by the laser 1103, so as to reduce the measurement error of the photoelectric element of the fluorescent oxygen sensor 110, thereby further improving the measurement accuracy and the measurement accuracy.
The wavelength range of the compensating light is 640nm to 660nm, preferably 650 nm.
As shown in fig. 3, a second optical filter 1106 is further disposed between the signal processing end 1104 and the stressor piece 1103, the second optical filter 1106 is disposed adjacent to the signal processing end 1104, and the second optical filter 1106 is adapted to filter the optical signal and the compensation light.
In other words, the second optical filter 1106 is located on the side of the signal processing end 1104 facing the stress sheet 1103, and can filter stray light (remaining light signal) in the light emitted from the stress sheet 1103 towards the signal processing end 1104, filter light emitted from the second reference light source towards the signal processing end 1104 (remaining compensation light), and filter ambient light, so that the accuracy of the light signal exciting the signal processing end 1104 is higher, and measurement errors caused by the ambient light and the stray light are reduced.
It should be noted that the first optical filter 1102 can filter the light emitted by the first light source 1101, and further cooperate with the second optical filter 1106, so that the stray light and the ambient light of the fluorescent oxygen sensor 110 of the embodiment have better filtering effects, are less affected by the stray light and the ambient light, and have more accurate measurement effects.
In the specific embodiment shown in fig. 3, a first lens 1107 is disposed between the second filter 1106 and the signal processing end 1104, and the first lens 1107 is adapted to focus the optical signal and compensate the light. In this way, the optical signal and the compensation light are focused by the first lens 1107, so that the loss of the optical signal and the compensation light is reduced and the intensity of the optical signal satisfies the measurement requirement.
Further, a second lens 1108 and a light guide column 1109 are arranged between the first light source 1101 and the stress sheet 1103, the second lens 1108 is suitable for focusing the excitation light, and the light guide column 1109 is suitable for guiding the light signal and the excitation light. Thus, the intensity of the excitation light is made to meet the requirement, the intensity of the optical signal generated by the stress sheet 1103 is ensured to meet the requirement, and the loss of the excitation light and the optical signal can be further reduced by the light guide column 1109.
In some embodiments, fluorescent oxygen sensor 110 further comprises: a beam splitter 1110, the beam splitter 1110 being obliquely arranged between the first lens 1107 and the second lens 1108 and being adapted to reflect the excitation light towards the stressor sheet 1103 and to pass the optical signal and the compensation light.
It should be noted that: the beam splitter 1110 is formed by coating one or more thin films on the surface of optical glass so that the optical glass can reflect light with specific wavelength and pass light with other wavelengths.
Based on beam splitter 1110 is far away, this embodiment sets up first light source 1101 and second light source 1105 respectively in the top and the below of beam splitter 1110, set up signal trigger end and stress piece 1103 in the left and right sides of beam splitter 1110, thereby make beam splitter 1110 can reflect exciting light or transmitted light signal, compensating light, thereby make the structure of fluorescence oxygen sensor 110 of this embodiment more reasonable, arrange between a plurality of optical element more reasonable, under the prerequisite that satisfies measuring effect, make fluorescence oxygen sensor 110's light seal nature better.
Preferably, beam splitter 1110 is obliquely disposed between first light source 1101 and second light source 1105.
Further, the fluorescent oxygen sensor assembly 100 further comprises: the PCB 1111 (Chinese name: Printed circuit boards), the first light source 1101, the second light source 1105 and the signal processing terminal 1104 are disposed on the PCB 1111. Thus, the first light source 1101, the second light source 1105 and the signal processing terminal 1104 are electrically connected by the PCB 1111, so that a single power supply can simultaneously supply power to the first light source 1101 and the second light source 1105, and the controller electrically connected to the PCB 1111 receives an electric signal from the signal processing terminal 1104.
The PCB 1111 is a flexible board, and the PCB 1111 is fixed around at least a part of the outer peripheral surface of the housing 120. Therefore, the space occupation of the fluorescent oxygen sensor 110 can be further reduced, and the fluorescent oxygen sensor 110 is smaller, so that the fluorescent oxygen sensor 110 has a wider application range and better universality.
Further, the housing 120 includes: the first supporting part 1201 and the second supporting part 1202, the first supporting part 1201 and the second supporting part 1202 are detachably connected, and an accommodating groove for accommodating the first optical filter 1102, the second optical filter 1106, the first lens 1107, the second lens 1108 and the beam splitter 1110 is defined in the first supporting part 1201 and the second supporting part 1202. In this way, at least part of the optical elements is disposed in the housing 120 and covers at least part of the housing 120 outside the housing 120 through the PCB 1111, so that the light-tightness of the housing 120 can be further improved.
Two embodiments of the fluorescence oxygen sensor 110 assembled by two housing 120 structures of the present invention will be described with reference to fig. 1 and 2.
As shown in fig. 1, the first supporting portion 1201 and the second supporting portion 1202 are detachably connected in the up-down direction, the first supporting portion 1201 is provided with a first groove 1206 on each of the left and right sides in the length direction, the second supporting portion 1202 is provided with a second groove 1207 on each of the left and right sides in the length direction, and the first groove 1206 and the second groove 1207 are combined to form a first light hole 1208 for the first light source 1101 to extend into and a second light hole 1209 for the second light source 1105 to extend into;
fixing bosses 1212 are formed at the front and rear ends of the second support portion 1202, fixing grooves 1213 are correspondingly formed at the front and rear ends of the second support portion 1202, and the first support portion 1201 and the second support portion 1202 are assembled by the cooperation of the fixing bosses 1212 and the fixing grooves 1213;
a fixing groove 1203 is formed at one end of the first supporting portion 1201, the stress sheet 1103 and the light guide column 1109 sequentially extend into the fixing groove 1203, the second lens 1108 is located outside the fixing groove 1203, the beam splitter 1110 is located outside the second lens 1108, a through hole 1204 is formed at the other end of the second supporting portion 1202, the signal processing end 1104 is arranged opposite to the through hole 1204, the first lens 1107 is fixed on one side of the through hole 1204, which faces the beam splitter 1110, and the second optical filter 1106 is fixed between the beam splitter 1110 and the second lens 1108.
Specifically, the first supporting portion 1201 and the second supporting portion 1202 are disposed opposite to each other in the vertical direction, the first groove 1206 of the first supporting portion 1201 and the second groove 1207 of the second supporting portion 1202 are disposed opposite to each other, the first mounting bracket 1210 is fixed on one side of the housing 120, the second mounting bracket 1211 is fixed on the opposite side of the housing 120, the first light source 1101 can be mounted in the first mounting bracket 1210, the second light source 1105 can be mounted in the second mounting bracket 1211, the fixing boss 1212 of the second supporting portion 1202 extends into the fixing groove 1213 of the first supporting portion 1201, and the fixing boss 1212 is in clamping or insertion fit with the fixing groove 1213, so as to achieve the fixed connection between the first supporting portion 1201 and the second supporting portion 1202.
Furthermore, a fixing groove 1203 is disposed at one end of the first supporting portion 1201, and the stress sheet 1103 and the second light guiding column 1109 are inserted into the fixing groove 1203, the second lens 1108 is fixed at one side of the fixing groove 1203 facing the beam splitter 1110, the beam splitter 1110 is fixed between the second lens 1108 and the second optical filter 1106, the first lens 1107 is fixed between the second optical filter 1106 and the via 1204, and a limiting structure is disposed at one side of the second optical filter 1106 facing the beam splitter 1110, so as to prevent the second optical filter 1106 from moving.
The PCB 1111 is inserted into one side of the first supporting portion 1201 and the second supporting portion 1202 by its own protrusion, and the signal trigger terminal is aligned with the via 1204.
As shown in fig. 2, in other embodiments, the first supporting portion 1201 is provided with a first light hole 1208 into which the first light source 1101 extends, and the second supporting portion 1202 is provided with a second light hole 1209 into which the second light source 1105 extends; a fixing groove 1203 is formed at one end of the first supporting part 1201, the stress sheet 1103 and the light guide post 1109 sequentially extend into the fixing groove 1203, the second lens 1108 is positioned outside the fixing groove 1203, and the beam splitter 1110 is fixed at the other end of the first supporting part 1201; the second supporting part 1202 has a via 1204, the signal processing end 1104 is disposed opposite to the via 1204, the first lens 1107 is fixed on one side of the via 1204 facing the beam splitter 1110, and the second filter 1106 is fixed between the beam splitter 1110 and the second lens 1108; and the first support part 1201 and the second support part 1202 are connected by a fixing post 1205 sequentially passing through the first support part 1201 and the second support part 1202.
Specifically, the first supporting portion 1201 and the second supporting portion 1202 are arranged opposite to each other in the front-rear direction, the first supporting portion 1201 and the second supporting portion 1202 are fixedly connected through a fixing post 1205, a fixing groove 1203 is arranged at one end of the first supporting portion 1201, a stress sheet 1103 and a light guide post 1109 are fixed in the fixing groove 1203, a second lens 1108 is fixed at one end of the fixing groove 1203 facing the beam splitter 1110, the beam splitter 1110 is fixed at the other end of the first supporting portion 1201, one end of the second supporting portion 1202 is suitable for being connected to the first supporting portion 1201, a through hole 1204 is formed at the other end of the second supporting portion 1202, and a first lens 1107 and a second filter 1106 are sequentially arranged on one side of the through hole 1204 facing the first supporting.
The PCB 1111 is fixed outside the second supporting portion 1202, and the signal processing terminal 1104 faces the through hole 1204, the first light source 1101 extends into the first light hole 1208, and the second light source 1105 extends into the second light hole 1209.
It should be noted that, in the above embodiments and the following embodiments, the partial pressure of oxygen can be detected, and the difference is only that the structure of the housing 120 is different, and is not described herein.
It should be noted that the first light-transmitting hole 1208 and the first light source 1101, and the second light-transmitting hole 1209 and the second light source 1105 are hermetically connected. In this way, the influence of ambient light on the measurement results can be further reduced.
The operation of the fluorescent oxygen sensor assembly 100 will now be described in detail with reference to the structure of the fluorescent oxygen sensor assembly 100.
The fluorescent oxygen sensor assembly 100 includes: fluorescent oxygen sensor 110 and casing 120, fluorescent oxygen sensor 110 includes: the light guide plate comprises a first light source 1101, a first optical filter 1102, a stress sheet 1103, a signal processing end 1104, a second light source 1105, a second optical filter 1106, a first lens 1107, a second lens 1108, a light guide post 1109, a beam splitter 1110 and a PCB 1111.
The beam splitter 1110 is provided non-parallel to the first light source 1101 (i.e., at an angle therebetween), and is provided non-parallel to the stress sheet 1101, preferably at an angle of 45 °, and the beam splitter 1110 is configured as a filter element having high reflectance to excitation light of a fixed wavelength and high transmittance to light of other wavelengths (e.g., optical signal and compensation light), and preferably has a reflectance of 80% to 100% and a transmittance of 90% to 100%.
Furthermore, the excitation light emitted by the first light source 1101 is filtered by the first optical filter 1102 and then reaches the beam splitter 1110, and is reflected by the beam splitter 1110 to reach the second lens 1108, the excitation light is focused by the second lens 1108 and then transmitted to the light guide column 1109, the excitation light in the light guide column 1109 irradiates the stress sheet 1103, the stress sheet 1103 is excited and then generates an optical signal, the optical signal penetrates through the beam splitter 1110, and irradiates the signal processing terminal 1104 through the second optical filter 1106 and the first lens 1107 in sequence, so that the optical signal is generated, and the intensity of the excitation light irradiating the stress sheet 1103 and the intensity of the optical signal irradiating the signal processing terminal 1104 meet the requirements.
The second light source 1105 is located in the second light hole 1209, opposite to the first light source 1101 and spaced apart by the beam splitter 1110, the second light source 1105 emits compensation light having the same wavelength as the optical signal, preferably 650nm, the compensation light directly irradiates the beam splitter 1110 and at least partially transmits through the beam splitter 1110, and another portion is reflected or refracted by the beam splitter 1110 to the signal processing end 1104 to compensate the optical signal.
The second optical filter 1106 is a filter element that only allows the optical signal and the compensation light to pass through, so that after the optical signal and the compensation light are transmitted and reflected in the above-mentioned series, the intensities of the optical signal and the reference light that finally reach the signal processing end 1104 are maximized, and then the optical signal and the compensation light are integrated and converted into an electrical signal, and the measured oxygen partial pressure value can be obtained through the calculation of a circuit and software.
It can be understood that the first light source 1101 and the second light source 1105 are suitable for LED lamps emitting light with different wavelengths, and the first light source 1101 and the second light source 1105 work alternately, and the first light source 1101 emits light and introduces its own measurement deviation, and the second light source 1105 is used for compensating the measurement deviation, so that the measured oxygen partial pressure is more accurate.
As shown in fig. 4 and 5, a respiratory mask 1000 according to an embodiment of the second aspect of the present invention includes: the mask comprises a mask body 200 and an outer shell 300, wherein the mask body 200 is suitable for covering the mouth and nose of a user, and the mask body 200 is provided with a fixing hole 210; the outer case 300 is adapted to accommodate the fluorescent oxygen sensor assembly 100 in the above-described embodiment, the outer case 300 is detachably connected to the fixing hole 210, and the stress sheet 1103 of the fluorescent oxygen sensor assembly 100 protrudes into the outer case 300 to be disposed adjacent to the user.
The one end that shell body 300 and fixed orifices 210 detachably are connected constructs the mount pad, the mount pad is connected with fixed orifices 210, be provided with sealing member 500 in the mount pad, the fluorescence oxygen sensor 110 has the one end of stress piece 1103 and inserts in the mount pad, and through sealing member 500 sealing connection, be provided with the air vent on the mount pad, stress piece 1103 pastes on the interior terminal surface of air vent, guarantee stress piece 1103 and the inside direct intercommunication of face guard body 200, and the size of air vent is less than the size of stress piece 1103, prevent that stress piece 1103 from dropping, do the sealing process between stress piece 1103 and fixed slot 1203, guarantee respiratory mask 1000's leakproofness.
According to the utility model discloses respirator 1000, on the one hand, through setting up sealing member 500 and the sealed processing between stress piece 1103 and fixed slot 1203, make respirator 1000's leakproofness better, thereby avoid the gaseous of respirator 1000 in to spill over, can tentatively improve measurement accuracy, and then make the adjacent user setting of stress piece 1103, thereby reduce the gas circuit between fluorescence oxygen sensor 110 and respirator 1000, thereby reduce the hysteresis quality that oxygen partial pressure detected, reach under the prerequisite of quick response, make respirator 1000's measurement accuracy and measurement stability all higher.
Further, one end of the outer case 300 is connected with the fixing hole 210, the other end of the outer case 300 is provided with a wire harness through hole 310, the wire harness through hole 310 is adapted for the wire harness 400 to pass through, and the wire harness 400 passing through the wire harness through hole 310 is electrically connected with the fluorescent oxygen sensor assembly 100. Thus, the arrangement position of the wiring harness 400 is more reasonable, and the arrangement is simpler and more convenient.
In the description of the present invention, it is to be understood that the terms "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (12)
1. A fluorescent oxygen sensor assembly (100), comprising: a fluorescent oxygen sensor (110) and a housing (120), the fluorescent oxygen sensor (110) being disposed within the housing (120), the fluorescent oxygen sensor (110) comprising:
a first light source (1101), the first light source (1101) being adapted to emit excitation light;
a first filter (1102), said first filter (1102) being directly opposite to said first light source (1101), said first filter (1102) being adapted to filter said excitation light;
a stress patch (1103), the stress patch (1103) being adapted to receive the excitation light and to emit a light signal;
a signal processing terminal (1104), the signal processing terminal (1104) being adapted to receive the optical signal and convert it into an electrical signal.
2. The fluorescent oxygen sensor assembly (100) of claim 1, wherein the fluorescent oxygen sensor (110) further comprises: a second light source (1105), the second light source (1105) being adapted to emit compensation light.
3. The fluorescent oxygen sensor assembly (100) of claim 2, wherein a second optical filter (1106) is further disposed between the signal processing terminal (1104) and the stressor sheet (1103), the second optical filter (1106) being disposed adjacent to the signal processing terminal (1104), the second optical filter (1106) being adapted to filter the optical signal and the compensation light.
4. The fluorescent oxygen sensor assembly (100) of claim 3, wherein a first lens (1107) is disposed between the second filter (1106) and the signal processing terminal (1104), the first lens (1107) being adapted to focus the optical signal and the compensation light.
5. The fluorescent oxygen sensor assembly (100) of claim 4, wherein a second lens (1108) and a light guide pillar (1109) are further disposed between the first light source (1101) and the stressors (1103), the second lens (1108) being adapted to focus the excitation light, the light guide pillar (1109) being adapted to direct the optical signal and the excitation light.
6. The fluorescent oxygen sensor assembly (100) of claim 5, wherein the fluorescent oxygen sensor (110) further comprises: a beam splitter (1110), the beam splitter (1110) being obliquely arranged between the first lens (1107) and the second lens (1108), and adapted to reflect the excitation light towards the stressor sheet (1103), to pass the light signal and the compensation light.
7. The fluorescent oxygen sensor assembly (100) of claim 2, further comprising: a PCB board (1111), the PCB board (1111) is fixed around at least a part of the outer circumference of the housing (120), and the first light source (1101), the second light source (1105) and the signal processing terminal (1104) are all disposed on the PCB board (1111).
8. The fluorescent oxygen sensor assembly (100) of claim 6, wherein the housing (120) comprises: the optical filter comprises a first supporting part (1201) and a second supporting part (1202), wherein the first supporting part (1201) is detachably connected with the second supporting part (1202), and accommodating grooves for accommodating the first optical filter (1102), the second optical filter (1106), the first lens (1107), the second lens (1108) and the beam splitter (1110) are defined in the first supporting part (1201) and the second supporting part (1202).
9. The fluorescent oxygen sensor assembly (100) of claim 8, wherein the first support (1201) is provided with a first light hole (1208) into which the first light source (1101) extends, and the second support (1202) is provided with a second light hole (1209) into which the second light source (1105) extends.
10. The fluorescent oxygen sensor assembly (100) of claim 9, wherein the first light-transmissive hole (1208) is in sealed connection with the first light source (1101), and the second light-transmissive hole (1209) is in sealed connection with the second light source (1105).
11. A respiratory mask (1000), comprising:
a mask body (200), the mask body (200) being adapted to be covered at the nose and mouth of a user, the mask body (200) having a fixing hole (210);
an outer housing (300), the outer housing (300) adapted to house the fluorescent oxygen sensor assembly (100) of any one of claims 1-10, the outer housing (300) being detachably connected with the fixing hole (210), and a stress tab (1103) of the fluorescent oxygen sensor assembly (100) protruding into the outer housing (300) to be disposed adjacent to the user.
12. The respiratory mask (1000) according to claim 11, wherein one end of the outer shell (300) is connected with the fixing hole (210), the other end of the outer shell (300) is provided with a wiring harness through hole (310), the wiring harness through hole (310) is suitable for a wiring harness (400) to pass through, and the wiring harness (400) passing through the wiring harness through hole (310) is electrically connected with the fluorescent oxygen sensor assembly (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922127574.6U CN211825689U (en) | 2019-12-02 | 2019-12-02 | Fluorescent oxygen sensor assembly and breathing mask with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922127574.6U CN211825689U (en) | 2019-12-02 | 2019-12-02 | Fluorescent oxygen sensor assembly and breathing mask with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211825689U true CN211825689U (en) | 2020-10-30 |
Family
ID=73030380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922127574.6U Active CN211825689U (en) | 2019-12-02 | 2019-12-02 | Fluorescent oxygen sensor assembly and breathing mask with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211825689U (en) |
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2019
- 2019-12-02 CN CN201922127574.6U patent/CN211825689U/en active Active
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