CN212438591U - Quantitative smell detection device - Google Patents
Quantitative smell detection device Download PDFInfo
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- CN212438591U CN212438591U CN202022042089.1U CN202022042089U CN212438591U CN 212438591 U CN212438591 U CN 212438591U CN 202022042089 U CN202022042089 U CN 202022042089U CN 212438591 U CN212438591 U CN 212438591U
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Abstract
The utility model discloses a quantitative olfaction detection device, which comprises an upper computer, a control core module and an olfactin diffusion chamber, wherein the upper computer is connected with the control core module through a communication port, and the control core module is connected with the olfactin diffusion chamber through a gas circuit; the control core module includes the control unit, main air pump with smell plain air pump, the control unit connects main air pump respectively through the speed regulator and smells the plain air pump, the gas outlet of main air pump connects main gas circuit flow sensor through main gas circuit, and rethread mixed gas circuit is connected to pressure sensor, the gas outlet who smells the plain air pump is through amazing gas circuit connection smell the entry of plain bottle, the export of smelling the plain bottle is connected in proper order through the gas circuit and is rethread mixed gas circuit connection to pressure sensor behind amazing gas circuit flow sensor and the concentration sensor, the gas process after mixing is carried behind the pressure sensor for the testee. The utility model discloses can accurate feedback smell molecule's volume concentration to realize quantitative sense of smell amazing function.
Description
Technical Field
The utility model relates to a quantitative smell detection device belongs to medical science detection area.
Background
It has been shown by investigation that allergic rhinitis is about 17.6% in China, i.e., about 2.5 billion patients suffer from allergic rhinitis. During the onset of allergic rhinitis, patients can have symptoms such as paroxysmal sneeze, watery nasal discharge, nasal obstruction, rhinocnesmus and the like, and some patients are accompanied with hyposmia symptoms. Allergic rhinitis may also cause a variety of diseases including asthma, conjunctivitis, chronic rhinosinusitis, adenoids, secretory otitis media. Therefore, the diagnosis of allergic rhinitis has great social significance.
At present, the conventional diagnostic methods for allergic rhinitis are clinical observation, skin prick allergy test and serum specific IgE detection, and the allergen of the allergic rhinitis is comprehensively judged. Before and after treatment, the judgment of the treatment effect is mainly based on the physiological form of the nasal mucosa and the self-description of the patient, and the quantitative analysis is difficult. Through retrieval, in the currently published patent, a design scheme of an olfactory testing device for providing olfactory tests by utilizing whether different smells exist is provided, so that the olfactory reply degree of a patient can be qualitatively analyzed, but quantitative analysis and accurate control cannot be realized. And therefore do not form an objective tool for the assessment of the allergic rhinitis treatment. Such as:
the utility model provides an olfactory sensibility detector of application number 2019101403271, it is portable, use the scheme of turbine worm and electric heating accelerated gas molecule disappearance, this scheme degree of automation is not high, and does not add the volume concentration that gas concentration sensor comes the survey smell molecule that overflows, therefore smell concentration can receive the multifactor influence such as heating temperature, solution concentration, gas flow, is difficult to realize quantitative analysis.
The patent smell test device design scheme of a high-precision smell test device with application number 2016100440941. The method adopts a special solution dripping measuring cup, and the measuring cup is positioned in a black box in the whole process by a method of stirring to accelerate dissipation so as to prevent the color of the colored odor solution from interfering with olfaction judgment. In this scheme, only the change and control of different odors can be realized, but the concentration of the same odor cannot be determined when the patient breathes, and therefore the goal of quantitative analysis cannot be achieved.
In conclusion, the quantitative olfaction test has great significance for realizing the quantitative olfaction test, not only can comprehensively reflect the olfaction capability of a tested object, but also can be applied to various fields of early diagnosis of Alzheimer's disease, brain science research, psychological research, child behavior correction and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a quantitative sense of smell detection device, the device adopt adjustable air pump and flow sensor accurate control gas circuit flow, use solenoid valve and the specific smell of the control unit selection and mixing ratio, use the volume concentration that gas concentration sensor comes survey smell molecule to the realization is to the target of the quantitative test of sense of smell.
The utility model adopts the technical proposal that: a quantitative olfaction detection device comprises an upper computer, a control core module and an olfactin diffusion chamber, wherein the upper computer is connected with the control core module through a communication port, and the control core module is connected with the olfactin diffusion chamber through a gas path; the control core module comprises a control unit, a main air pump and an olfactory element air pump, the control output end of the control unit is respectively connected with the main air pump and the olfactory element air pump through a speed regulator, the gas outlet of the main air pump is connected with a main gas path flow sensor through a main gas path, and is connected to a pressure sensor through a mixed gas path, a gas outlet of the olfacto gas pump is connected to an inlet of an olfacto bottle through a stimulation gas path, an outlet of the olfacto bottle is connected to the pressure sensor through the mixed gas path after being sequentially connected with a flow sensor and a concentration sensor of the stimulation gas path through the gas path, the mixed gas is conveyed to a tested object through the pressure sensor, the main air path flow sensor, the stimulation air path flow sensor, the concentration sensor and the pressure sensor are all connected with the control unit through signal lines, and signals detected by the main air path flow sensor, the stimulation air path flow sensor, the concentration sensor and the pressure sensor are sent to the control unit.
Furthermore, a main air path electromagnetic main valve is arranged at the front end of the main air path and close to the outlet of the main air pump.
Furthermore, a stimulation air path electromagnetic main valve is arranged at the front end of the stimulation air path and close to the outlet of the olfactory element air pump.
Furthermore, the tail end of the stimulation air path is divided into a plurality of parallel branches, each branch is sequentially connected with a branch electromagnetic valve and a sniffing bottle in series, and the outlet of the sniffing bottle on each branch is converged and then connected to the flow sensor of the stimulation air path.
Further, the control unit adopts an embedded control processor.
Furthermore, the control core module further comprises a display screen and a key, and the control unit can be set through the display screen and the key.
Furthermore, the upper computer is connected with the control core module through a network port or a USB port, control instruction information between the upper computer and the control core module is transmitted in a bidirectional interaction mode, and state information is fed back to the upper computer through the control core module in a unidirectional transmission mode.
The utility model has the advantages that: compared with the prior art, the utility model adds the gas concentration sensor in the olfactory component diffusion gas circuit to form a feedback loop, which can accurately feed back the volume concentration of the odor molecules, thereby realizing the quantitative olfactory stimulation function; meanwhile, in the output of the mixed gas circuit, a pressure sensor is added to collect the air flow pressure fluctuation information, so that the calculation of the volume, the flow rate and other information of the gas sucked by the tested object can be realized. And the existing other schemes are open-loop control at present, cannot realize the stability and controllability of odor molecules, and cannot realize quantitative test of empty energy.
The scheme totally adopts electrified elements and modular design, can quickly realize function expansion and upgrading, and has lower cost.
The scheme can realize quantitative mixed test of various different odor molecules, and can more comprehensively reflect the olfactory ability of a tested object and improve the test dimensionality compared with single odor test of other test schemes.
Drawings
Fig. 1 is an overall configuration diagram of the quantitative smell detection device.
Fig. 2 is a schematic structural diagram of a control core module.
Fig. 3 is a schematic structural view of the olfactory diffusion chamber.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, a quantitative olfaction detection device comprises an upper computer, a control core module and a sniffer diffusion chamber, wherein the upper computer is connected with the control core module through a network port, a USB port or other communication ports, control instruction information is transmitted in a bidirectional interaction manner between the upper computer and the control core, and state information is fed back to the upper computer in a unidirectional manner by the control core module. The control core module is connected with the sniffing element diffusion chamber through two air paths, the sniffing element diffusion chamber is mainly used for switching the air paths and mixing odor according to a control core control instruction, and the concentration, pressure and the like of odor molecules are fed back to the control core module.
In this embodiment, the control core module includes the control unit, main air pump and smell plain air pump, and wherein the control output of control unit passes through the speed regulator and connects main air pump respectively and smell plain air pump, the gas outlet of main air pump passes through main gas circuit and connects main gas circuit flow sensor to rethread mixed gas circuit is connected to pressure sensor, and the front end of main gas circuit just is close to the export department of main air pump and is equipped with a main gas circuit electromagnetic main valve. Smell the gas outlet of plain air pump and connect the entry of smelling the plain bottle through amazing gas circuit, smell the export of plain bottle and connect gradually amazing gas circuit flow sensor and concentration sensor back rethread mix the gas circuit and be connected to pressure sensor through the gas circuit, gas process after mixing carry for the testee behind the pressure sensor, wherein the front end of amazing gas circuit and be close to the exit of smelling the plain air pump and be equipped with an amazing gas circuit electromagnetism master valve, the tail end of amazing gas circuit falls into many branch circuits that connect in parallel to each other to all have concatenated branch circuit solenoid valve in proper order on every branch circuit and smell the plain bottle, the export of smelling the plain bottle on each branch circuit converges and is connected to amazing gas circuit flow sensor. The main air path flow sensor, the stimulation air path flow sensor, the concentration sensor and the pressure sensor are all connected with the control unit through signal lines, and signals detected by the main air path flow sensor, the stimulation air path flow sensor, the concentration sensor and the pressure sensor are sent to the control unit.
The working principle of the device is as follows: the control core provides main air path airflow and stimulation air path airflow through the air pump and conveys the air to the olfactory element diffusion chamber. According to the control instruction of the electromagnetic valve, the olfacto diffusion chamber opens the air passage of the appointed olfacto bottle, so that the air flow in the stimulation air passage brings out the olfacto molecules to generate the stimulation smell. The gas of amazing gas circuit mixes with colorless tasteless air in the main gas circuit after passing through concentration sensor again, dilutes the back, forms the mixed gas flow of the fixed gas total flow of fixed smell molecule concentration of for the experiment, and the test to the testee is carried out to the testee through mixing the gas circuit and carrying out. In the olfactory organ diffusion chamber, sensors such as a pressure sensor, a concentration sensor and a flow sensor feed back various information of the airflow to the control core module in real time.
A control core module: the control core mainly comprises an embedded system control unit which is responsible for receiving feedback signals of each sensor, interacts with an upper computer, displays real-time system information on a simple display screen, receives key instructions, controls the working state and output flow of the air pump and controls the opening and closing of the electromagnetic valve. The pressure regulator receives a control core instruction, adjusts the output flow of the main air pump by adjusting the output voltage, the output of the main air pump is colorless and odorless air, and the main air circuit electromagnetic main valve controls whether the main air circuit outputs or not; similarly, the olfactive air pump is controlled by the pressure regulator to output flow, and is controlled by the stimulation air passage electromagnetic main valve to output or not.
Under normal operating condition, the embedded system control unit calculates the output flow of the main gas circuit air pump and the sniffer air pump according to the concentration flow information set by the upper computer, reversely deduces a control voltage value according to a voltage flow curve, respectively gives the speed regulators of the two gas circuits through control commands, and opens the electromagnetic valve. Meanwhile, the embedded system also receives the feedback of signals such as pressure, flow and concentration in the sniffer diffusion chamber in real time, and continuously calculates the optimized control voltage value to ensure that the concentration and the flow of the mixed airflow sniffed by the tested object are stable.
Olfactin diffusion chamber: and the flow sensor, the pressure sensor and the concentration sensor feed back various data of the control core to optimize control parameters in real time. The electromagnetic valve determines the air flow generated by the sniffer air pump, the air flow is mixed with air temperature molecules through one or more branch circuits, and the mixed air is fed back to the control core flow and concentration parameters after passing through the flow sensor and the concentration sensor. Then mixing with colorless and odorless air in the main air path to form final smell test gas for the tested object. Through the pressure sensor, the information such as the volume, the flow rate and the like of the breath to be tested can be effectively calculated.
Under normal operating condition, smell the essence control room in, according to control core's instruction, according to required order and time, the appointed solenoid valve of smelling essence bottle branch road of switching to realize one set of system, the test of different sense of smell pungent smell switches. After the information of the two flow sensors and the concentration sensor is fed back to the control core, the control core calculates and outputs the mixed airflow flow and concentration information which is output in real time. And the flow of the mixed gas inhaled by the tested object can be calculated by combining the fluctuation information of the pressure sensor and the geometric structure information of the system, so that the quantitative test of smell is realized.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution modes and the like fall within the scope of the present invention.
The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.
Claims (7)
1. A quantitative olfaction detection device comprises an upper computer, a control core module and an olfactin diffusion chamber, wherein the upper computer is connected with the control core module through a communication port, and the control core module is connected with the olfactin diffusion chamber through a gas path; it is characterized in that the control core module comprises a control unit, a main air pump and a sniffing air pump, the control output end of the control unit is respectively connected with the main air pump and the sniffing air pump through a speed regulator, the gas outlet of the main air pump is connected with a main gas path flow sensor through a main gas path, and is connected to a pressure sensor through a mixed gas path, a gas outlet of the olfacto gas pump is connected to an inlet of an olfacto bottle through a stimulation gas path, an outlet of the olfacto bottle is connected to the pressure sensor through the mixed gas path after being sequentially connected with a flow sensor and a concentration sensor of the stimulation gas path through the gas path, the mixed gas is conveyed to a tested object through the pressure sensor, the main air path flow sensor, the stimulation air path flow sensor, the concentration sensor and the pressure sensor are all connected with the control unit through signal lines, and signals detected by the main air path flow sensor, the stimulation air path flow sensor, the concentration sensor and the pressure sensor are sent to the control unit.
2. The quantitative olfactory detection device as claimed in claim 1, wherein a main air path solenoid main valve is provided at a front end of the main air path and near an outlet of the main air pump.
3. The quantitative olfactory detection device as claimed in claim 1, wherein a stimulation gas path electromagnetic main valve is provided at the front end of the stimulation gas path and near the outlet of the olfactory air pump.
4. The quantitative olfactory detection device as claimed in claim 3, wherein the tail end of the stimulation air path is divided into a plurality of branches connected in parallel, each branch is connected in series with a branch electromagnetic valve and a sniffer bottle in sequence, and the outlets of the sniffer bottles on the branches are converged and then connected to the flow sensor of the stimulation air path.
5. The quantitative olfactory detection device as claimed in claim 1, wherein the control unit employs an embedded control processor.
6. The quantitative olfactory detection device as claimed in claim 1 or claim 5, wherein the control core module further comprises a display screen and a key, and the control unit can be set through the display screen and the key.
7. The quantitative olfactory detection device as claimed in claim 1, wherein the host computer is connected with the control core module through a network port or a USB port, control instruction information between the host computer and the control core module is transmitted in a bidirectional interactive manner, and state information is fed back to the host computer through the control core module in a unidirectional manner.
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| CN202022042089.1U CN212438591U (en) | 2020-09-17 | 2020-09-17 | Quantitative smell detection device |
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| CN202022042089.1U CN212438591U (en) | 2020-09-17 | 2020-09-17 | Quantitative smell detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111956191A (en) * | 2020-09-17 | 2020-11-20 | 殷敏 | Quantitative smell detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111956191A (en) * | 2020-09-17 | 2020-11-20 | 殷敏 | Quantitative smell detection device |
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