Measurement darkroom device for an optoelectronic nose

Abstract

The application provides a measuring darkroom device for an optoelectronic nose, and relates to the technical field of breath gas detection. The measuring darkroom device for the optoelectronic nose comprises a darkroom box, a light sensor array, a motion mechanism, a photon counter, a controller and an upper computer. The VOC component in the breath gas can be subjected to a catalytic chemiluminescence reaction on a catalytic coating through each light sensor of the light sensor array in the darkroom box. The photon counter is moved to each light sensor under the driving of the motion mechanism, so that the photon counter measures the light output by each light sensor. The measuring data is sent to the upper computer through the controller. Since the light sensor based on the catalytic chemiluminescence principle has high detection sensitivity, the detection sensitivity of the electronic nose can be improved, and the VOC content in the breath gas can be detected.

Description

Technical Field

[0001] This invention relates to the field of respiratory gas detection technology, and more particularly to a measurement darkroom device for a photoelectric nose. Background Technology

[0002] The composition of volatile organic compounds (VOCs) in the breath of lung cancer patients differs from that of ordinary people. Lung cancer can be diagnosed by analyzing the composition of VOCs in people's breath, which can effectively advance the diagnosis of lung cancer and improve the cure rate of lung cancer patients.

[0003] In related technologies, electronic noses primarily rely on their internally integrated cross-sensitive gas sensor arrays to qualitatively and quantitatively identify VOC components in breath air, thus providing a basis for lung cancer diagnosis. Currently, widely used gas sensor arrays in electronic noses consist of multiple gas sensors, which are metal oxide sensors. Each gas sensor contains a different metal oxide, which reacts with VOC components in breath air, generating reaction data. This data is then analyzed by a host computer to achieve qualitative and quantitative identification of VOC components in breath air.

[0004] However, the detection sensitivity of electronic noses in related technologies is low and cannot meet the requirements for detecting VOC content in breath. Summary of the Invention

[0005] This invention provides a measurement darkroom device for photoelectric noses to address the issue that electronic noses in related technologies have low detection sensitivity and cannot meet the requirements for detecting VOC content in breath.

[0006] This invention provides a measurement darkroom device for an electronic nose, including a darkroom box, an optical sensor array, a motion mechanism, a photon counter, a controller, and a host computer;

[0007] The darkroom box has a darkroom cavity, the light sensor array, the motion mechanism and the photon counter are located in the darkroom cavity, and the controller and the host computer are located outside the darkroom box;

[0008] The optical sensor array includes multiple optical sensors spaced apart. The optical sensors are catalytic chemiluminescence sensors. The multiple optical sensors have different catalytic coatings. Each optical sensor is configured to cause VOC components in breath gas to undergo a catalytic chemiluminescence reaction on the catalytic coating.

[0009] The photon counter is mounted on the motion mechanism, which is used to move the photon counter to each of the optical sensors so that the photon counter measures the light output by each of the optical sensors.

[0010] Both the photon counter and the host computer are connected to the controller, and the photon counter is used to send measurement data to the host computer through the controller.

[0011] Optionally, it also includes a mounting base, which is fixed in the darkroom cavity, and a plurality of the light sensors are sequentially mounted on the mounting base along the length of the mounting base;

[0012] The mounting base is provided with multiple air inlet channels and multiple air outlet channels. Each optical sensor includes an air inlet pipe and an air outlet pipe. The air inlet pipe of each optical sensor is connected to one of the air inlet channels, and the air outlet pipe of each optical sensor is connected to one of the air outlet channels.

[0013] Optionally, the darkroom box includes a box body and a base plate, the base plate is provided with a mounting groove, and the connection between the box body and the base plate is located in the mounting groove;

[0014] The base plate is provided with multiple air intake aviation connectors and one air exhaust aviation connector. The mounting base is also provided with a confluence channel. Each air intake aviation connector is connected to one air intake channel, the air exhaust aviation connector is connected to the confluence channel, and the confluence channel is connected to multiple air exhaust channels.

[0015] Optionally, the air intake channel and the air outlet channel extend along the height direction of the mounting base, and the merging channel extends along the length direction of the mounting base.

[0016] Optionally, the optical sensor further includes a transparent test tube, a base, a ceramic rod, a transparent quartz tube, a rubber ring, and a temperature control plate;

[0017] The transparent test tube is mounted on the base, the rubber ring is sealed between the transparent test tube and the base, the transparent test tube and the base form a reaction space, the ceramic rod and the transparent quartz tube are located in the reaction space, and the ceramic rod and the transparent quartz tube are mounted on the base;

[0018] The base is provided with a first channel and a second channel. The first channel is connected to the air inlet pipe and the transparent quartz tube, respectively, and the second channel is connected to the air outlet pipe.

[0019] The temperature control board is mounted on the base and is electrically connected to the ceramic rod, which is provided with the catalytic coating.

[0020] Optionally, it also includes a temperature control adapter board, with the temperature control board of each of the optical sensors inserted into the temperature control adapter board. The base plate is provided with an electrical aviation connector, and the temperature control adapter board is used to electrically connect to the controller through the electrical aviation connector.

[0021] Optionally, the base plate is also provided with an optical fiber aviation connector, and the temperature control adapter board is used to communicate with the controller through the optical fiber aviation connector.

[0022] Optionally, the motion mechanism includes a conveyor belt and a fixed frame, the fixed frame being fixed on the conveyor belt, the conveyor belt being able to move the fixed frame along the length direction of the mounting base, and the photon counter being fixed on the fixed frame.

[0023] Optionally, it also includes a water cooling system, which includes a water cooling radiator and a water cooling circulation pump. The water cooling radiator is installed on the photon counter, and the water cooling circulation pump is located outside the darkroom box. The water cooling radiator is connected to the water cooling circulation pump, and the water cooling radiator is used to dissipate heat and cool the photon counter.

[0024] Optionally, the optical sensor array includes eight optical sensors, which are sequentially mounted on the mounting base along the length of the mounting base.

[0025] The measurement darkroom device for a photoelectric nose provided in this invention includes a darkroom box, a light sensor array, a motion mechanism, a photon counter, a controller, and a host computer. The darkroom box has a darkroom cavity, in which the light sensor array, motion mechanism, and photon counter are located, while the controller and host computer are located outside the darkroom box. The light sensor array includes multiple spaced light sensors, which are catalytic chemiluminescence sensors. Each light sensor has a different catalytic coating, and each light sensor is configured to cause a catalytic chemiluminescence reaction of VOC components in the breath on the catalytic coating. The photon counter is mounted on the motion mechanism, which moves the photon counter to each light sensor so that the photon counter measures the light output by each light sensor. Both the photon counter and the host computer are connected to the controller, and the photon counter sends measurement data to the host computer through the controller. The measurement darkroom device for the photoelectric nose uses photosensors in an array within the darkroom to induce a catalytic chemiluminescence reaction of VOCs in breath onto a catalytic coating. A photon counter, driven by a motion mechanism, moves to each photosensor, allowing the counter to measure the light output from each sensor. Because the photosensors based on the principle of catalytic chemiluminescence have high detection sensitivity, the detection sensitivity of the electronic nose can be improved, thus meeting the requirements for detecting VOC content in breath. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the measurement darkroom device for a photoelectric nose provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A partial structural diagram of the measurement darkroom device used for the photoelectric nose;

[0029] Figure 3 for Figure 2 A schematic diagram of the mounting base in the diagram;

[0030] Figure 4 for Figure 3 A cross-sectional schematic diagram of the mounting base;

[0031] Figure 5 for Figure 2 A schematic diagram of the base plate in the middle;

[0032] Figure 6 This is a schematic diagram of the structure of the optical sensor provided in an embodiment of the present invention;

[0033] Figure 7 for Figure 6 A cross-sectional schematic diagram of the optical sensor in the image.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10 - Darkroom box; 101 - Darkroom cavity;

[0036] 11-Box body; 12-Base plate;

[0037] 120 - Mounting slot; 121 - Air intake aviation connector;

[0038] 122 - Air vent connector; 123 - Electrical connector;

[0039] 124 - Fiber optic aviation connector; 125 - First water-cooled adapter;

[0040] 126 - Second water-cooling adapter; 20 - Optical sensor array;

[0041] 21-Optical sensor; 211-Intake pipe;

[0042] 212 - Exhaust tube; 213 - Transparent test tube;

[0043] 214 - Base; 215 - Ceramic rod;

[0044] 2141 - First Channel; 2142 - Second Channel;

[0045] 216 - Transparent quartz tube; 217 - Rubber ring;

[0046] 218 - Temperature control panel; 219 - Catalytic coating;

[0047] 30 - Motion mechanism; 31 - Conveyor belt;

[0048] 32-Fixed bracket; 33-Drive motor;

[0049] 40 - Photon counter; 50 - Controller;

[0050] 60 - Host computer; 70 - Mounting base;

[0051] 701 - Intake passage; 702 - Exhaust passage;

[0052] 703 - Merging channel; 71 - Temperature control adapter board;

[0053] 72 - Water-cooled radiator; 721 - Water inlet;

[0054] 722 - Water outlet; 73 - Water-cooled circulating pump. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] The use of terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] In related technologies, the gas sensor of the electronic nose is a metal oxide sensor. This metal oxide sensor has low detection sensitivity, which results in low detection sensitivity of the electronic nose and makes it unable to meet the requirements for detecting VOC content in breath.

[0061] To address the aforementioned issues, this invention provides a measurement darkroom device for a photoelectric nose, comprising a darkroom box, a light sensor array, a motion mechanism, a photon counter, a controller, and a host computer. The light sensor array includes multiple spaced-apart light sensors, which are catalytic chemiluminescence sensors. The measurement darkroom device for the photoelectric nose utilizes the light sensor array within the darkroom box to induce a catalytic chemiluminescence reaction of VOCs in the breath onto a catalytic coating. Driven by the motion mechanism, the photon counter moves to each light sensor, measuring the light output from each sensor. Because the photosensors based on catalytic chemiluminescence have high detection sensitivity, the detection sensitivity of the electronic nose can be improved, thereby meeting the requirements for detecting VOC content in breath.

[0062] The measurement darkroom device for photoelectronic nose provided in the embodiments of the present invention will be described in detail below with reference to specific embodiments.

[0063] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a measurement darkroom device for a photoelectronic nose, including a darkroom box 10, a light sensor array 20, a motion mechanism 30, a photon counter 40, a controller 50, and a host computer 60.

[0064] The darkroom box 10 has a darkroom cavity 101, in which the light sensor array 20, the motion mechanism 30 and the photon counter 40 are located, and the controller 50 and the host computer 60 are located outside the darkroom box 10.

[0065] like Figure 2 , Figure 6 and Figure 7 As shown, the light sensor array 20 includes a plurality of spaced light sensors 21. The light sensors 21 are catalytic chemiluminescence sensors. The plurality of light sensors 21 have different catalytic coatings 219. Each light sensor 21 is configured to enable the VOC components in the breath gas to undergo a catalytic chemiluminescence reaction on the catalytic coating 219.

[0066] A photon counter 40 is mounted on a motion mechanism 30, which is used to move the photon counter to each photo sensor 21 so that the photon counter 40 measures the light output by each photo sensor 21.

[0067] Both the photon counter 40 and the host computer 60 are connected to the controller 50. The photon counter 40 is used to send measurement data to the host computer 60 through the controller 50.

[0068] The darkroom cavity 101 is a sealed cavity, and the darkroom box 10 can prevent external light from entering the darkroom cavity 101. In some examples, the darkroom box 10 can be a box-shaped structure with a black light-absorbing velvet lining.

[0069] Breathing air can enter each photosensitive sensor 21 individually, and the flow rate of breathing air entering each photosensitive sensor 21 is the same, as is the volume of breathing air entering each photosensitive sensor 21 per unit time. It should be noted that the unit time can be 1 second.

[0070] The catalytic coating 219 of each photosensor 21 is different from each other. The VOC components in the breath gas entering each photosensor 21 undergo a catalytic chemiluminescence reaction on the catalytic coating 219 of the photosensor 21, and the photosensor 21 can output light.

[0071] The motion mechanism 30 can move within the dark chamber cavity 101, and the photon counter 40 is mounted on the motion mechanism 30. The photon counter 40 is capable of measuring the number of photons.

[0072] A photon counter 40 is mounted on a motion mechanism 30. Driven by the motion mechanism 30, the photon counter 40 moves to each photosensitive sensor 21 and stops at each photosensitive sensor 21. The photon counter 40 stops at each photosensitive sensor 21 for the same amount of time.

[0073] When the photon counter 40 moves to one of the photosensors 21 in the photosensor array 20 under the drive of the motion mechanism 30, breathing gas is introduced into that photosensor 21. The breathing gas causes a catalytic chemiluminescence reaction on the catalytic coating 219 of the photosensor 21, and the photosensor 21 outputs light. At the same time, the photon counter 40 measures the light output by the photosensor 21. It should be noted that when one photosensor 21 of the photon counter outputs light, the other photosensors 21 are not introduced with breathing gas and do not output light.

[0074] The photon counter 40 measures each photon sensor 21 for the same duration. In some examples, the photon counter 40 may measure each photon sensor 21 for 1 minute, the photon counter 40 may stay at each photon sensor 21 for 1 minute, and the ventilation time to each photon sensor 21 may be 1 minute.

[0075] The photon counter 40 sends the measurement data of the light output by each photosensor 21 to the host computer 60 through the controller 50. The host computer 60 analyzes the measurement data and can perform qualitative and quantitative identification of VOC components in the breath.

[0076] The measurement darkroom device for photoelectronic nose provided in this embodiment of the invention enables the VOC components in breath to undergo a catalytic chemiluminescence reaction on the catalytic coating 219 through the photosensor array 20 in the darkroom box 10. The photon counter 40 is moved to each photosensor 21 by the motion mechanism 30, so that the photon counter 40 measures the light output by each photosensor 21. Since the photosensor 21 based on the principle of catalytic chemiluminescence has high detection sensitivity, the detection sensitivity of the photoelectronic nose can be improved, thereby meeting the requirements for detecting the VOC content in breath.

[0077] Optionally, such as Figure 2 and Figure 3 As shown, the measurement darkroom device for the photoelectric nose also includes a mounting base 70, which is fixed in the darkroom cavity 101, and multiple photosensors 21 are sequentially mounted on the mounting base 70 along the length of the mounting base 70.

[0078] The mounting base 70 can be a cuboid or other shapes. In this embodiment, the mounting base 70 is a cuboid.

[0079] like Figure 3 and Figure 6 As shown, the mounting base 70 is provided with multiple air inlet channels 701 and multiple air outlet channels 702. Each optical sensor 21 includes an air inlet pipe 211 and an air outlet pipe 212. The air inlet pipe 211 of each optical sensor 21 is connected to an air inlet channel 701, and the air outlet pipe 212 of each optical sensor 21 is connected to an air outlet channel 702.

[0080] The number of intake channels 701 is equal to the number of optical sensors 21, and the number of exhaust channels 702 is equal to the number of optical sensors 21.

[0081] Multiple air inlet channels 701 and multiple air outlet channels 702 of the mounting base 70 are arranged sequentially along the length of the mounting base 70. When breathing air is introduced into one of the air inlet channels 701 of the mounting base 70, the breathing air in the air inlet channel 701 enters the photosensitive sensor 21 through the air inlet pipe 211 of the corresponding photosensitive sensor 21. The VOC components in the breathing air undergo a catalytic chemiluminescence reaction on the catalytic coating 219, and the gas after the reaction in the photosensitive sensor 21 flows into the corresponding air outlet channel 702 through the air outlet pipe 212.

[0082] In one optional embodiment, the optical sensor array 20 includes eight optical sensors 21, which are sequentially mounted on the mounting base 70 along its length. The mounting base 70 is provided with eight air inlet channels 701 and eight air outlet channels 702.

[0083] Optionally, such as Figure 1 , Figure 2 and Figure 5 As shown, the darkroom box 10 includes a box body 11 and a base plate 12. The base plate 12 is provided with a mounting groove 120, and the connection between the box body 11 and the base plate 12 is located in the mounting groove 120. This arrangement can prevent external light from entering the darkroom cavity 101, thus ensuring the light-blocking effect inside the darkroom box 10.

[0084] The box body 11 is detachably inserted into the mounting groove 120 of the base plate 12. The base plate 12 can be an opaque rigid plate.

[0085] like Figure 3 , Figure 4 and Figure 5 As shown, the base plate 12 is provided with multiple air intake aviation connectors 121 and one air exhaust aviation connector 122. The mounting base 70 is also provided with a confluence channel 703. Each air intake aviation connector 121 is connected to an air intake channel 701, the air exhaust aviation connector 122 is connected to the confluence channel 703, and the confluence channel 703 is connected to multiple air exhaust channels 702.

[0086] The air intake passage 701 and the air outlet passage 702 can extend along the height direction of the mounting base 70. The air intake passage 701 penetrates the mounting base 70 in the height direction of the mounting base 70.

[0087] The confluence channel 703 can extend along the length of the mounting base 70. One end of the confluence channel 703 is closed, and the other end of the confluence channel 703 is connected to the exhaust aviation connector 122.

[0088] When the breathing air outside the darkroom box 10 enters the air intake channel 701 through one of the air intake aviation connectors 121 on the base plate 12, the breathing air in the air intake channel 701 enters the corresponding photosensor 21 through the air intake pipe 211. The VOC components in the breathing air undergo a catalytic chemiluminescence reaction on the catalytic coating 219. The gas after the reaction in the photosensor 21 flows into the corresponding air outlet channel 702 through the air outlet pipe 212. The gas in the air outlet channel 702 flows into the confluence channel 703 and flows out through the air outlet aviation connector 122. It should be noted that the gas flowing out from the air outlet aviation connector 122 can be introduced into the exhaust gas treatment device. This arrangement allows for rapid cleaning of the gas after the reaction in the photosensor 21, ensuring the smooth flow of the overall air path of the photoelectric nose.

[0089] Optionally, such as Figure 6 and Figure 7As shown, the optical sensor 21 also includes a transparent test tube 213, a base 214, a ceramic rod 215, a transparent quartz tube 216, a rubber ring 217, and a temperature control plate 218. The transparent test tube 213 is mounted on the base 214, and the rubber ring 217 seals between the transparent test tube 213 and the base 214, forming a reaction space. The ceramic rod 215 and the transparent quartz tube 216 are located within the reaction space and are mounted on the base 214. The base 214 has a first channel 2141 and a second channel 2142. The first channel 2141 is connected to the inlet pipe 211 and the transparent quartz tube 216, respectively, and the second channel 2142 is connected to the outlet pipe 212. The temperature control plate 218 is mounted on the base 214 and is electrically connected to the ceramic rod 215. A catalytic coating 219 is provided on the ceramic rod 215.

[0090] The rubber ring 217 serves as a seal between the transparent test tube 213 and the base 214.

[0091] The material of the catalytic coating 219 can be a nano-metal oxide-based catalytic material.

[0092] The transparent quartz tube 216 can allow the breathing air entering the light sensor 21 to be introduced into the top of the reaction space.

[0093] Temperature control board 218 is used to control the internal temperature of light sensor 21. Temperature control board 218 is soldered to the lead wires of ceramic rod 215 to provide heating voltage.

[0094] During the detection process of the photoelectric nose, the temperature control board 218 provides a heating voltage to the ceramic rod 215, thereby heating the ceramic rod 215 and subsequently the catalytic coating 219. Breathing gas entering the inlet pipe 211 enters the reaction space through the first channel 2141 and the transparent quartz tube 216. The breathing gas passes through the catalytic coating 219, where the VOC components in the breathing gas undergo a catalytic chemiluminescence reaction. The reacted gas in the photosensor 21 flows into the outlet pipe 212 through the second channel 2142. In some examples, the temperature of the catalytic coating 219 can reach 300 degrees Celsius.

[0095] Optionally, such as Figure 2 and Figure 5 As shown, the measurement darkroom device for the photoelectric nose also includes a temperature control adapter board 71, on which a temperature control board 218 for each photoelectric sensor 21 is inserted. The base plate 12 is provided with an electrical aviation connector 123, and the temperature control adapter board 71 is used to electrically connect to the controller 50 via the electrical aviation connector 123.

[0096] The base plate 12 is also equipped with a fiber optic aviation connector 124, and the temperature control adapter board 71 is used to communicate with the controller 50 through the fiber optic aviation connector 124. The electrical aviation connector 123 and the fiber optic aviation connector 124 not only ensure communication between the temperature control adapter board 71 and the controller 50, but also ensure the light-shielding effect inside the anechoic chamber box 10.

[0097] The temperature control adapter board 71 is a circuit board used to connect the temperature control board 218 of the light sensor 21 and to provide control commands and power. The temperature control adapter board 71 is provided with multiple slots, each of which can accommodate the temperature control board 218.

[0098] The anechoic chamber apparatus for the photoelectric nose also includes a power module, which is electrically connected to the controller 50. The host computer 60 can send control commands to the temperature control board 218 through the controller 50, the fiber optic aviation connector 124, and the temperature control adapter board 71.

[0099] Optionally, such as Figure 2 As shown, the motion mechanism 30 includes a conveyor belt 31 and a fixed frame 32. The fixed frame 32 is fixed on the conveyor belt 31. The conveyor belt 31 can move along the length of the mounting base 70 with the fixed frame 32. The photon counter 40 is fixed on the fixed frame 32.

[0100] The motion mechanism 30 also includes a drive motor 33 and a pulley. The drive motor 33 is connected to the controller 50 through an electrical aviation connector 123 and an optical fiber aviation connector 124. The rotating shaft of the drive motor 33 is connected to the pulley. The conveyor belt 31 is fitted onto the pulley. The drive motor 33 can drive the pulley to rotate through the rotating shaft. The pulley drives the conveyor belt 31 to move. The conveyor belt 31 can carry the fixed frame 32 to move along the length of the mounting base 70.

[0101] The photon counter 40 has a measurement window that is parallel to the length of the mounting base 70 and faces the light sensor 21.

[0102] The host computer 60 controls the rotation of the drive motor 33 through the controller 50 and the fiber optic aviation connector 124, which enables the conveyor belt 31 to move the photon counter 40 to each optical sensor 21 and stop at each optical sensor 21, so that the photon counter 40 can measure the light output by each optical sensor 21.

[0103] Optionally, such as Figure 1 and Figure 2As shown, the measurement darkroom device for the photoelectric nose also includes a water cooling system, which includes a water cooling radiator 72 and a water cooling circulation pump 73. The water cooling radiator 72 is mounted on the photon counter 40, and the water cooling circulation pump 73 is located outside the darkroom box 10. The water cooling radiator 72 is connected to the water cooling circulation pump 73, and the water cooling radiator 72 is used to dissipate heat and cool the photon counter 40.

[0104] The water cooling system also includes a cooling module located outside the dark chamber box 10. The cooling module generates cooling water and is connected to a water-cooled circulating pump 73 and a water-cooled radiator 72. The water-cooled circulating pump 73 circulates the water in the cooling system. The cooling module can be a cooling tower.

[0105] like Figure 2 and Figure 5 As shown, the water-cooled radiator 72 can be a metal block with internal water channels. The water-cooled radiator 72 is provided with an inlet 721 and an outlet 722. The base plate 12 is provided with a first water-cooling adapter 125 and a second water-cooling adapter 126. The inlet 721 and the water-cooled circulation pump 73 are respectively connected to the first water-cooling adapter 125 through conduits. The second water-cooling adapter 126 and the cooling module are respectively connected to the second water-cooling adapter 126 through conduits.

[0106] The first water-cooling adapter 125 and the second water-cooling adapter 126 can be hose adapters.

[0107] During the operation of the water-cooled circulating pump 73, cooling water can pass through the water-cooled radiator 72, which can dissipate heat and cool down the photon counter 40, thereby ensuring the stability of the photoelectronic nose detection.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A measurement darkroom device for a photoelectric nose, characterized in that, It includes an anechoic chamber, a light sensor array, a motion mechanism, a photon counter, a controller, and a host computer; The darkroom box has a darkroom cavity, which is a sealed cavity to prevent external light from entering the darkroom cavity; the light sensor array, the motion mechanism and the photon counter are located in the darkroom cavity, and the controller and the host computer are located outside the darkroom box; The optical sensor array includes multiple optical sensors spaced apart. The optical sensors are catalytic chemiluminescence sensors. The multiple optical sensors have different catalytic coatings. Each optical sensor is configured to cause VOC components in breath gas to undergo a catalytic chemiluminescence reaction on the catalytic coating. The photon counter is mounted on the motion mechanism, which is used to move the photon counter to each of the optical sensors so that the photon counter measures the light output by each of the optical sensors. Both the photon counter and the host computer are connected to the controller. The photon counter is used to send measurement data to the host computer through the controller. The host computer is used to analyze the measurement data to achieve qualitative and quantitative identification of VOC components in breath. The optical sensor includes an air inlet pipe, an air outlet pipe, a transparent test tube, a base, a ceramic rod, a transparent quartz tube, a rubber ring, and a temperature control board; The transparent test tube is mounted on the base, the rubber ring is sealed between the transparent test tube and the base, the transparent test tube and the base form a reaction space, the ceramic rod and the transparent quartz tube are located in the reaction space, and the ceramic rod and the transparent quartz tube are mounted on the base; The base is provided with a first channel and a second channel. The first channel is connected to the air inlet pipe and the transparent quartz tube, respectively, and the second channel is connected to the air outlet pipe. The temperature control plate is mounted on the base and is electrically connected to the ceramic rod. The ceramic rod is provided with the catalytic coating. The catalytic coating is made of a nano-metal oxide-based catalytic material.

2. The measurement darkroom apparatus for a photoelectronic nose according to claim 1, characterized in that, It also includes a mounting base, which is fixed in the darkroom cavity, and a plurality of the light sensors are sequentially mounted on the mounting base along the length of the mounting base; The mounting base is provided with multiple air inlet channels and multiple air outlet channels. The air inlet pipe of each optical sensor is connected to one of the air inlet channels, and the air outlet pipe of each optical sensor is connected to one of the air outlet channels.

3. The measurement darkroom apparatus for a photoelectronic nose according to claim 2, characterized in that, The darkroom box includes a box body and a base plate. The base plate is provided with a mounting groove, and the connection between the box body and the base plate is located in the mounting groove. The base plate is provided with multiple air intake aviation connectors and one air exhaust aviation connector. The mounting base is also provided with a confluence channel. Each air intake aviation connector is connected to one air intake channel, the air exhaust aviation connector is connected to the confluence channel, and the confluence channel is connected to multiple air exhaust channels.

4. The measurement darkroom apparatus for a photoelectronic nose according to claim 3, characterized in that, The air intake channel and the air outlet channel extend along the height direction of the mounting base, and the merging channel extends along the length direction of the mounting base.

5. The measurement darkroom apparatus for a photoelectronic nose according to claim 4, characterized in that, It also includes a temperature control adapter board, with the temperature control board of each of the optical sensors inserted into the temperature control adapter board. The base plate is provided with an electrical aviation connector, and the temperature control adapter board is used to electrically connect to the controller through the electrical aviation connector.

6. The measurement darkroom apparatus for a photoelectronic nose according to claim 5, characterized in that, The base plate is also provided with an optical fiber aviation connector, and the temperature control adapter board is used to communicate with the controller through the optical fiber aviation connector.

7. The measurement darkroom apparatus for a photoelectronic nose according to claim 2, characterized in that, The motion mechanism includes a conveyor belt and a fixed frame. The fixed frame is fixed on the conveyor belt, and the conveyor belt can move the fixed frame along the length of the mounting base. The photon counter is fixed on the fixed frame.

8. The measurement darkroom apparatus for a photoelectric nose according to claim 7, characterized in that, It also includes a water cooling system, which includes a water cooling radiator and a water cooling circulation pump. The water cooling radiator is installed on the photon counter, and the water cooling circulation pump is located outside the darkroom box. The water cooling radiator is connected to the water cooling circulation pump and is used to dissipate heat and cool the photon counter.

9. The measurement darkroom apparatus for a photoelectronic nose according to any one of claims 2-8, characterized in that, The optical sensor array includes eight optical sensors, which are sequentially mounted on the mounting base along its length.

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