CN114923896A - Control system of photoelectron nose and photoelectron nose - Google Patents
Control system of photoelectron nose and photoelectron nose Download PDFInfo
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- 230000005693 optoelectronics Effects 0.000 claims abstract description 66
- 238000002347 injection Methods 0.000 claims abstract description 62
- 239000007924 injection Substances 0.000 claims abstract description 62
- 238000005259 measurement Methods 0.000 claims abstract description 51
- 238000006243 chemical reaction Methods 0.000 claims description 62
- 230000003287 optical effect Effects 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 7
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 92
- 230000000241 respiratory effect Effects 0.000 description 18
- 239000012855 volatile organic compound Substances 0.000 description 17
- 238000001514 detection method Methods 0.000 description 16
- 230000003197 catalytic effect Effects 0.000 description 9
- 230000003993 interaction Effects 0.000 description 8
- 230000004044 response Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
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- 238000003491 array Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 4
- 235000019645 odor Nutrition 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 2
- 238000001871 ion mobility spectroscopy Methods 0.000 description 2
- 201000005202 lung cancer Diseases 0.000 description 2
- 208000020816 lung neoplasm Diseases 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 238000001184 proton transfer reaction mass spectrometry Methods 0.000 description 2
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- 230000005281 excited state Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention provides a control system of an optoelectronic nose and the optoelectronic nose, wherein the control system of the optoelectronic nose comprises a terminal, a main control board and a photon counter, the terminal is electrically connected with the main control board, and the photon counter is electrically connected with the main control board; the terminal is used for setting a first control parameter and a second control parameter; the main control board controls the photon counter according to the first control parameter; the photon counter sends measurement data to the terminal through the main control board; the main control board is also used for being electrically connected with an injection pump, a multi-channel switching valve and a gas mass flow controller in the photoelectron nose; and the injection pump, the multi-channel switching valve and the gas mass flow controller feed back first state information to the terminal through the main control board. The control system of the photoelectron nose solves the problem that the photoelectron nose in the prior art is complex to operate.
Description
Technical Field
The invention relates to the technical field of respiratory gas detection, in particular to a control system of an optoelectronic nose and the optoelectronic nose.
Background
The existing detection equipment for VOC (Volatile Organic Compounds) in respiratory gas comprises ion mobility spectrometry, gas chromatography-mass spectrometry and proton transfer reaction mass spectrometry, and the detection equipment has accurate detection results, but is expensive, complex in structure and high in operation requirement on the equipment. The electronic nose is an electronic system for identifying odor by using a response pattern of a gas sensor array, and the sensor arrays widely applied at present comprise a metal oxide type sensor array and an electrochemical type sensor array, but the detection sensitivity of the sensor arrays is low, and the detection requirement of the content of VOC in respiratory gas cannot be met.
The optical sensor based on the catalytic chemiluminescence has higher detection sensitivity, the photoelectron nose based on the optical sensor array can be used for detecting VOC (volatile organic compounds) in respiratory gas, the photoelectron nose comprises a plurality of optical sensors, and each optical sensor is provided with different catalytic coatings so as to react with different components in the respiratory gas to obtain reaction data, and a special analysis instrument is required to be used for collecting and analyzing the reaction data. The photoelectronic nose also comprises devices such as an injection pump, a flowmeter, a switching valve and the like, wherein each device has parameters to be adjusted, when the parameters of one device or a plurality of devices need to be changed, an operator needs to change the parameters of each device one by one, and the working state of each device cannot be monitored in real time.
The operation is complex when the prior photoelectron nose is used for detecting the VOC in the respiratory gas.
Disclosure of Invention
The invention provides a control system of an optoelectronic nose and the optoelectronic nose, and the control system of the optoelectronic nose solves the problem of complex operation of the optoelectronic nose in the prior art.
The invention provides a control system of a photoelectron nose, which comprises a terminal, a main control board and a photon counter, wherein the terminal is electrically connected with the main control board;
the terminal is used for setting a first control parameter and a second control parameter;
the main control board is used for acquiring a first control parameter and controlling the photon counter according to the first control parameter;
the photon counter is used for collecting the measurement data of the reaction module in the photoelectron nose and sending the measurement data to the terminal through the main control board;
the terminal is used for receiving the measurement data;
the main control board is also used for being electrically connected with an injection pump, a multi-channel switching valve and a gas mass flow controller in the photoelectron nose;
the main control board is used for acquiring a second control parameter and controlling the injection pump, the multi-channel switching valve and the gas mass flow controller according to the second control parameter, and the injection pump, the multi-channel switching valve and the gas mass flow controller feed back first state information to the terminal through the main control board.
In a possible implementation manner, in the control system of the optoelectronic nose provided by the invention, the number of the photon counters is multiple, the photon counters are arranged in one-to-one correspondence with the multiple reaction modules in the optoelectronic nose, and the photon counters are used for collecting measurement data of the reaction modules corresponding to the photon counters;
or the mobile module is connected with the photon counter and used for controlling the photon counter to move among the reaction modules in the photoelectron nose so as to enable the photon counter to collect the measurement data of the reaction module corresponding to the photon counter.
In a possible embodiment, the present invention provides a control system for an optoelectronic nose, wherein the first control parameter includes at least one of sampling time, power on and power off;
the second control parameters comprise at least one of initialization setting, injection speed setting, injection quantity setting and automatic injection setting of the injection pump, the second control parameters further comprise at least one of control flow setting and current flow setting of the gas mass flow controller, and the second control parameters further comprise at least one of change switching speed setting and change switching position of the multi-channel switching valve;
the first status information includes at least one of a syringe pump status and an injection process status of the syringe pump, the first status information further includes at least one of a current set flow value and a current measured flow value of the gas mass flow controller, the first status information further includes at least one of a set switching speed and a current switching valve position of the multi-channel switching valve.
In a possible implementation manner, the control system of the optoelectronic nose provided by the invention is characterized in that a main control board is provided with a first interface and a second interface, the main control board is electrically connected with a photon counter through the first interface, the second interface comprises a plurality of sub-interfaces, and an injection pump, a multi-channel switching valve and a gas mass flow controller in the optoelectronic nose are respectively and electrically connected with the main control board through different sub-interfaces;
the mobile module is electrically connected with the main control board through the sub-interface;
the terminal is used for setting a third control parameter, the main control board is used for obtaining the third control parameter and controlling the mobile module according to the third control parameter, and the mobile module feeds back second state information to the terminal through the main control board.
In a possible embodiment, the present invention provides the control system for an optoelectronic nose, the third control parameter includes at least one of a set moving speed, a module zero and a set moving position of the moving module, and the second status information is at least one of whether the moving module is zero and a moving speed.
In a possible implementation manner, the control system of the optoelectronic nose further comprises a plurality of temperature control modules, wherein the temperature control modules are electrically connected with the sub-interfaces in a one-to-one correspondence manner;
the terminal is used for setting a fourth control parameter and sending an inquiry instruction, the main control board is used for acquiring the fourth control parameter and controlling the temperature control module according to the fourth control parameter, and the main control board is also used for inquiring the working state of the temperature control module by sending the inquiry instruction;
the reaction module is an optical sensor, the temperature control modules are used for being correspondingly connected with the optical sensors one by one, the temperature control modules are used for controlling the working temperature of the optical sensors connected with the temperature control modules according to fourth control parameters, and the temperature control modules feed back third state information to the terminal through the main control board.
In a possible embodiment, the present invention provides a control system for an optoelectronic nose, wherein the temperature control module comprises a heating unit and a temperature control unit, the heating unit is used for heating the reaction module, and the temperature control unit is electrically connected with the heating unit to control the heating temperature of the heating unit.
In a possible embodiment, the present disclosure provides the control system of an optoelectronic nose, wherein the fourth control parameter comprises at least one of a set target temperature and a set temperature control parameter of the temperature control module;
the third state information is at least one of a target temperature, a current temperature and a temperature control parameter of the temperature control module;
the query instruction includes at least one of viewing a current temperature, viewing a target temperature, and viewing a temperature control parameter.
In a possible implementation manner, the control system of the photoelectron nose further comprises a power switch relay, a plasma generator and a water cooling pump, wherein the plasma generator and the water cooling pump are both electrically connected with the power switch relay, the plasma generator is used for enhancing signals of the light sensor, the water cooling pump is used for cooling the photon counter, a third interface is arranged on the main control board, and the main control board is electrically connected with the power switch relay through the third interface;
the terminal is used for sending the switching instruction, and the main control board is used for controlling the switching of switch relay according to the switching instruction to when the switch relay is opened, plasma generator and water-cooling pump all open, when the switch relay is closed, plasma generator and water-cooling pump all close.
The invention also provides the photoelectron nose, which comprises a photoelectron nose body and the control system of the photoelectron nose, wherein the control system is electrically connected with the photoelectron nose body.
The invention provides a control system of a photoelectron nose and the photoelectron nose, the control system of the photoelectron nose sets a first control parameter and a second control parameter through a terminal, a main control board acquires the first control parameter and controls a photon counter according to the first control parameter, the main control board acquires the second control parameter and controls an injection pump, a multi-channel switching valve and a gas mass flow controller according to the second control parameter, the photon counter sends measurement data to the terminal through the main control board, the injection pump, the multi-channel switching valve and the gas mass flow controller feed back the first state information to the terminal through the main control board, therefore, the photon counter, the injection pump, the multi-channel switching valve and the gas mass flow controller can be controlled by operating on the terminal, the measurement data of the photon counter and the first state information of the injection pump, the multi-channel switching valve and the gas mass flow controller can be obtained on the terminal, thereby the problem that the photoelectron nose is complex to operate in the prior art is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a control system of an optoelectronic nose according to an embodiment of the present disclosure;
fig. 2 is a schematic connection diagram of a control system of an optoelectronic nose and a body of the optoelectronic nose provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of an optoelectronic nose provided in an embodiment of the present invention.
Description of reference numerals:
100-control system of photoelectronic nose;
110-a terminal;
120-a main control board; 121 — a first interface; 122-a second interface; 1221-subinterface; 123-a third interface;
130-photon counter;
140-a mobile module;
150-a temperature control module;
160-power switch relay;
170-plasma generator;
180-water-cooled pump;
200-an optoelectronic nose body;
210-a reaction module;
220-a syringe pump;
230-a multi-channel switching valve;
240-gas mass flow controller;
a-carrier gas;
b-measured gas;
c-waste gas.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, such as to be capable of being fixedly connected, indirectly connected through intervening media, and capable of being connected through two elements or in a mutual relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application.
The terms "first," "second," and "third" (if any) in the description and claims of this application and the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or described herein.
Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or maintenance tool that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or maintenance tool.
The VOC composition in the respiratory gas of the lung cancer patients is different from that of ordinary people, and the diagnosis of the lung cancer can be realized by comparing the VOC composition in the respiratory gas.
The existing respiratory gas VOC detection equipment comprises ion mobility spectrometry, gas chromatography-mass spectrometry and proton transfer reaction mass spectrometry, and the detection equipment has accurate detection results, but is expensive, complex in structure and high in operation requirement.
The electronic nose is an electronic system that recognizes odors using response patterns of a gas sensor array. The main mechanism of the electronic nose for recognizing the odor is that each sensor in the sensor array of the electronic nose has different sensitivity to the gas to be detected, for example, a gas with the first component can generate high response on a certain sensor, while the other sensors have low response, and a sensor with the second component can generate high response is not sensitive to the gas with the first component, so that the response patterns of the whole sensor array to different component gases are different, and the electronic nose can recognize the odor according to the response patterns of the sensors.
The sensor arrays which are widely applied at present comprise a metal oxide sensor array and an electrochemical sensor array, but the detection sensitivity of the sensor arrays is low, the content of VOC in the respiratory gas is reduced, and the sensors cannot meet the detection requirement of the content of VOC in the respiratory gas.
The optical sensor takes the principle of catalytic chemiluminescence, specifically, the catalytic chemiluminescence is a light radiation phenomenon accompanied in the process of carrying out chemical reaction on substances, X, Y the two substances are subjected to chemical reaction to generate Z substances, the energy released by the reaction is absorbed by the molecules of the Z substances and is transited to an excited state Z, and the excited Z substances generate light radiation in the process of returning to a ground state, so that chemical energy is converted into light energy. The optical sensor has higher detection sensitivity, and the optoelectronic nose based on the optical sensor array can be used for detecting VOC in respiratory gas.
The photoelectronic nose comprises a plurality of light sensors, wherein each light sensor is provided with a different catalytic coating so as to react with different components in the respiratory gas to obtain reaction data, and a special analysis instrument is required to be used for collecting and analyzing the reaction data. The photoelectronic nose also comprises devices such as an injection pump, a flowmeter, a switching valve and the like, wherein each device has parameters to be adjusted, when the parameters of one device or a plurality of devices need to be changed, an operator needs to change the parameters of each device one by one, and the working state of each device cannot be monitored in real time.
The operation is complex when the prior photoelectron nose is used for detecting the VOC in the respiratory gas.
Based on the control system, the control system of the photoelectron nose can control the photon counter, the injection pump, the multi-channel switching valve and the gas mass flow controller by operating the control system on the terminal, and can obtain the measurement data of the photon counter and the first state information of the injection pump, the multi-channel switching valve and the gas mass flow controller on the terminal, so that the problem that the photoelectron nose is complex to operate in the prior art is solved.
Fig. 1 is a schematic structural diagram of a control system of an optoelectronic nose according to an embodiment of the present invention; FIG. 2 is a schematic diagram of the connection between the control system of the optoelectronic nose and the main body of the optoelectronic nose provided by the embodiment of the invention; fig. 3 is a schematic structural diagram of an optoelectronic nose provided in an embodiment of the present invention. As shown in fig. 1 to 3, the control system 100 of the optoelectronic nose provided by the present invention includes a terminal 110, a main control board 120 and a photon counter 130, wherein the terminal 110 is electrically connected to the main control board 120, the photon counter 130 is electrically connected to the main control board 120, the terminal 110 is configured to set a first control parameter and a second control parameter, the main control board 120 is configured to obtain the first control parameter and control the photon counter 130 according to the first control parameter, the photon counter 130 is configured to collect measurement data of a reaction module 210 in the optoelectronic nose and send the measurement data to the terminal 110 through the main control board 120, and the terminal 110 is configured to receive the measurement data.
The main control board 120 is further configured to be electrically connected to the injection pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240 in the optoelectronic nose, the main control board 120 is configured to obtain a second control parameter and control the injection pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240 according to the second control parameter, and the injection pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240 feed back the first state information to the terminal 110 through the main control board 120.
The optoelectronic nose has a reaction module 210 therein, the reaction module 210 is used for measuring the VOC component in the respiratory gas, and the reaction module 210 can convert the VOC component in the respiratory gas into countable photons through catalytic chemiluminescence. The photon counter 130 is an optical pulse detection device, and the photon counter 130 may collect photons generated in the reaction module 210, convert the photons into measurement data, send the measurement data to the main control board 120 within a specified sampling time, and send the measurement data to the terminal 110 through the main control board 120.
Specifically, the reaction module 210 measures VOC in the respiratory gas of the normal person, the photon counter 130 acquires measurement data of the normal person by collecting photons, and sends the measurement data to the terminal 110 through the main control board 120, and the terminal 110 uses the measurement data of the normal person as standard data. The reaction module 210 then measures VOCs in the respiratory gas of the person to be diagnosed, the photon counter 130 acquires measurement data of the person to be diagnosed by collecting photons, and sends the measurement data to the terminal 110 through the main control board 120, and the measurement data and the standard data are compared on the terminal 110, so that a basis for diagnosis can be provided for the user.
In this embodiment, the terminal 110 may be an electronic device having a display screen, for example, the terminal 110 may be a computer or a mobile phone, the display screen of the computer or the mobile phone may provide a human-computer interaction interface of the optoelectronic nose, and the user may set the first control parameter through the human-computer interaction interface of the terminal 110. The terminal 110 may be electrically connected to the main control board 120 through a USB, a serial port, or a local area network.
The main control board 120 may be a single chip microcomputer, and the main control board 120 obtains the first control parameter set by the terminal 110. The main control board 120 has a plurality of interfaces, and the main control board 120 is connected to the photon counter 130 through one or more of the interfaces, so as to correspondingly control the photon counter 130 according to the first control parameter. Specifically, when the internal parameter in the photon counter 130 needs to be modified, a first control parameter may be set on the human-computer interface of the terminal 110, and the modification of the internal parameter of the photon counter 130 may be completed by sending the first control parameter to the photon counter 130 through the main control board 120. Without operating inside the photon counter 130.
The structures of the syringe pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240 will be explained.
The injection pump 220 is an automatic electromechanical device for injecting the gas B to be detected, and the injection pump 220 comprises a stepping motor, an injector cavity, an electromagnetic valve (the electromagnetic valve comprises a sample injection electromagnetic valve and an injection electromagnetic valve) and a control circuit board. When the tested gas B is injected through the injection pump 220, under the action of the stepping motor, the sample injection electromagnetic valve is firstly opened, the gas in the sample bag is sucked into the injector cavity, then the injection electromagnetic valve is opened, the tested gas B is injected into the gas path of the photoelectron nose, and the flowing process of the tested gas B is completed under the control of the control circuit board.
The multi-channel switching valve 230 is an electromechanical device for multi-channel gas circuit switching, the multi-channel switching valve 230 includes a control circuit board, a mover, an inlet and a plurality of outlets, the inlet of the multi-channel switching valve 230 is connected to the injection pump 220, and the mover of the multi-channel switching valve 230 rotates under the control of the control circuit board to connect the outlets to different reaction modules 210, respectively, so as to inject the measured gas B into the different reaction modules 210, respectively.
Air is also required as a carrier when injecting the gas B to be measured, and the gas mass flow controller 240 is an electromechanical device for measuring and controlling the mass flow of air. The gas mass flow controller 240 includes a control circuit board and a mass flow control unit, under the control of the control circuit board, the mass flow control unit adjusts the mass flow of air, and the air with a certain mass flow passing through the gas mass flow controller 240 is mixed with the gas B to be detected, and then enters different reaction modules 210 through the multi-channel switching valve 230.
The main control board 120 controls the syringe pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240, respectively, according to the second control parameter generated by the terminal 110. The syringe pump 220, the multi-channel switching valve 230 and the gas mass flow controller 240 generate first state information according to respective working conditions, and send the first state information to the main control board 120 through respective control circuit boards, and feed back to the terminal 110 through the main control board 120.
The invention provides a control system of a photoelectron nose, a first control parameter and a second control parameter are set through a terminal 110, a main control board 120 acquires the first control parameter and controls a photon counter 130 according to the first control parameter, the main control board 120 acquires the second control parameter and controls an injection pump 220, a multi-channel switching valve 230 and a gas mass flow controller 240 according to the second control parameter, the photon counter 130 sends measurement data to the terminal 110 through the main control board 120, the injection pump 220, the multi-channel switching valve 230 and the gas mass flow controller 240 feed back first state information to the terminal 110 through the main control board 120, therefore, the photon counter 130, the injection pump 220, the multi-channel switching valve 230 and the gas mass flow controller 240 can be controlled through operation on the terminal 110, and the measurement data of the photon counter 130 and the injection pump 220, the multi-channel switching valve 230 and the gas mass flow controller 240 can be obtained on the terminal 110, The first status information of the multi-channel switching valve 230 and the gas mass flow controller 240, thereby solving the problem of complicated operation of the photoelectron nose in the prior art.
In some embodiments, in order to improve the detection efficiency of the optoelectronic nose, the number of the photon counters 130 is multiple, and the photon counters 130 are arranged in a one-to-one correspondence with the multiple reaction modules 210 in the optoelectronic nose, and the photon counters 130 are used for collecting photons of the reaction modules 210 corresponding to the photon counters and converting the photons into measurement data.
The photon counter 130 sends the obtained measurement data in the corresponding reaction module 210 to the main control board 120, the main control board 120 analyzes and processes the data and sends the data to the terminal 110, and the terminal 110 can provide a basis for diagnosis for a user by comparing the measurement data with the standard data.
In other embodiments, because the cost of the photon counter 130 is high, and the number of the photon counter 130 is less than the number of the reaction modules 210, the control system 100 of the optoelectronic nose may further include a moving module 140, the moving module 140 is connected to the photon counter 130, and the moving module 140 is configured to control the photon counter 130 to move between the reaction modules 210 in the optoelectronic nose, so that the photon counter 130 collects measurement data of the reaction module 210 corresponding to the photon counter 130.
One or a few photon counters 130 may be provided, the moving module 140 may be provided with a holding device, the holding device is connected to the photon counters 130, the moving module 140 is electrically connected to the main control board 120, and the moving module 140 moves the photon counters 130 among the reaction modules 210 under the control of the main control board 120 to obtain measurement data.
Specifically, the photon counter 130 moves to one of the reaction modules 210 to obtain measurement data corresponding to the reaction module 210, and stores the measurement data in the main control board 120, the photon counter 130 moves to another reaction module 210 to obtain measurement data corresponding to the reaction module 210, and stores measurement processing in the main control board 120, the mobile module 140 continuously moves the photon counter 130 until the measurement data of all the reaction modules 210 are completely collected, the main control board 120 analyzes and processes the measurement data and sends the measurement data to the terminal 110, and the terminal 110 can provide a basis for diagnosis for a user by comparing the measurement data with standard data.
The first control parameter is used to control the photon counter 130, and includes at least one of sampling time, power on, and power off.
The sampling time, the startup and the shutdown all belong to the built-in parameters of the photon counter 130, and the built-in parameters of the photon counter 130 can be changed by setting a first control parameter on a human-computer interaction interface of the terminal 110.
Specifically, according to different detected gases B, all the photon counters 130 may be selectively turned on to improve the measurement efficiency, or a part of the photon counters 130 may be turned on and a part of the photon counters 130 may be turned off to save the measurement cost. In addition, different measurement gases have different times of catalytic chemiluminescence occurring in the reaction module 210, and thus, different sampling times of the photon counter 130 can be set according to the different measurement gases, thereby achieving more accurate measurement.
As shown in fig. 1 and fig. 2, the main control board 120 has a first interface 121 and a second interface 122, the main control board 120 is electrically connected to the photon counter 130 through the first interface 121, the second interface 122 includes a plurality of sub-interfaces 1221, and the injection pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240 in the optoelectronic nose are electrically connected to the main control board 120 through different sub-interfaces 1221, respectively.
In the working time of the optoelectronic nose, the photon counter 130 needs to send measurement data to the main control board 120 regularly in the set sampling time, and in order to ensure the connection stability between the photon counter 130 and the main control board 120 and the timeliness of data sending, the first interfaces 121 and the photon counter 130 are arranged in a one-to-one correspondence manner, and the first interfaces 121 may be RS232 interfaces or RS485 interfaces.
The control circuit boards in the injection pump 220, the multi-channel switching valve 230 and the gas mass flow controller 240 are respectively connected with the sub-interfaces 1221 in a one-to-one correspondence manner, and are connected with the main control board 120 through the sub-interfaces 1221.
The second interface 122 may be an RS485 interface, and the connection manner of the second interface 122 with the injection pump 220, the multi-channel switching valve 230 and the control circuit board in the gas mass flow controller 240 through the sub-interface 1221 is a connection manner of a master and a slave.
Specifically, the first status information returned by the syringe pump 220 includes a syringe pump address, and the main control board 120 determines that the device sending the first status information is the syringe pump 220 according to the syringe pump address.
The first status information returned from the gas mass flow controller 240 includes the gas mass flow controller address, and the main control board 120 determines the device that transmitted the first status information is the incoming gas mass flow controller 240 according to the gas mass flow controller address.
The first state information returned from the multi-channel switching valve 230 includes an address of the multi-channel switching valve, and the main control board 120 determines, based on the address of the multi-channel switching valve, that the device that transmitted the first state information is the incoming multi-channel switching valve 230.
When the main control board 120 transmits the second control parameter, a second control parameter address is set in the second control parameter, the second control parameter address is used to identify one of the syringe pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240, the control circuit boards in the syringe pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240 all receive the second control parameter, but only the device matching the second control parameter address executes the second control parameter.
Therefore, the three injection pumps 220, the multi-channel switching valve 230 and the gas mass flow controller 240 are connected with the main control board 120 in a master-slave connection mode, and the problem of channel mixing when the three injection pumps 220, the multi-channel switching valve 230 and the gas mass flow controller 240 are communicated with the main control board 120 is solved through address matching.
Accordingly, the syringe pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240 can be controlled through the human-machine interface of the terminal 110 without being provided through the respective control circuit boards of the syringe pump 220, the multi-channel switching valve 230, and the gas mass flow controller 240. In addition, the operating conditions of the syringe pump 220, the multi-channel switching valve 230 and the gas mass flow controller 240 can be monitored according to the first state information through the human-machine interface of the terminal 110.
In the present embodiment, the second control parameter includes at least one of an initialization setting, an injection speed setting, an injection volume setting, and an auto-injection setting of the syringe pump 220, the second control parameter further includes at least one of a control flow setting and a measured current flow setting of the gas mass flow controller 240, and the second control parameter further includes at least one of a changed switching speed setting and a changed switching position of the multi-channel switching valve 230.
The first state information includes at least one of a syringe pump state and an injection process state of syringe pump 220, the first state information further includes at least one of a current set flow value and a current measured flow value of gas mass flow controller 240, and the first state information further includes at least one of a set switching speed and a current switching valve position of multi-channel switching valve 230.
First, the second control parameter and the first state information relating to syringe pump 220 will be explained. When each measurement is started, the syringe pump 220 is initialized, and the built-in parameters of the syringe pump 220 during the last measurement can be cleared, so that the syringe pump 220 returns to the initial working state, and the parameter setting of the current measurement is facilitated. The injection speed and the injection amount of the syringe pump 220 are also required to be set according to different measured gases B, and in addition, the syringe pump 220 can be set to an automatic injection mode. These settings may be made on the human-machine interface of the terminal 110. According to the state of the injection pump and the state of the injection process fed back by the injection pump 220, the working state of the injection pump 220 can be monitored in real time on a human-computer interaction interface of the terminal 110.
Next, the second control parameter and the first status information related to the gas mass flow controller 240 will be explained. Different flow rates of the gas mass flow controller 240 may be set for different measured gases B to allow the measured gases B to react sufficiently in the reaction module 210. The flow of the measured gas B can be measured, and the current set flow is ensured to be consistent with the current measured flow. The currently set flow and the currently measured flow need to be fed back to the terminal 110 as the first state information through the main control board 120, so as to be used for timely adjustment on the human-computer interaction interface of the terminal 110.
Next, the second control parameter and the first state information relating to the multi-channel switching valve 230 will be described. The position of the multi-channel switching valve 230 may be directly changed by setting the second control parameter, and in addition, different switching speeds of the multi-channel switching valve 230 may be set according to different movers in the multi-channel switching valve 230. The set switching speed and the current switching valve position of the multi-channel switching valve 230 are fed back to the terminal 110 through the main control board 120 as first state information, so that the multi-channel switching valve 230 is monitored in real time through a human-computer interaction interface of the terminal 110.
With continued reference to fig. 1 and fig. 2, the mobile module 140 is electrically connected to the main control board 120 through the sub-interface 1221; the terminal 110 is configured to set a third control parameter, the main control board 120 is configured to obtain the third control parameter and control the mobile module 140 according to the third control parameter, and the mobile module 140 feeds back the second state information to the terminal 110 through the main control board 120.
The control circuit board in the mobile module 140 is also electrically connected to the main control board 120 through the sub-interface 1221. The third control parameter includes a third control parameter address, the third control parameter address is used for identifying the mobile module 140, and the control circuit board in the mobile module 140 receives the third control parameter and executes the third control parameter.
The second state information of the mobile module 140 is also sent to the terminal 110 through the main control board 120, so that the built-in parameters of the mobile module 140 can be changed through the human-computer interaction interface of the terminal 110, and the working state of the mobile module 140 can be monitored.
In this embodiment, the third control parameter includes at least one of a set moving speed, a module zeroing, and a set moving position of the moving module, and the second state information is at least one of whether the moving module is zeroed and a moving speed.
By setting the moving speed and the moving position of the moving module 140, the photon counter 130 can accurately move through the moving module 140, so that the photon counter 130 can timely collect measurement data. By zeroing the mobile module 140, the mobile module 140 may be calibrated to ensure accuracy for the next use.
The working state of the mobile module 140 can be judged in time according to the return-to-zero and the moving speed of the mobile module, so that accurate and timely feedback is provided for a user.
With continued reference to fig. 1 and fig. 2, the control system 100 of the optoelectronic nose further includes a plurality of temperature control modules 150, and the temperature control modules 150 are electrically connected to the sub-interfaces 1221 in a one-to-one correspondence manner.
The terminal 110 is configured to set a fourth control parameter and send an inquiry command, the main control board 120 is configured to obtain the fourth control parameter and control the temperature control module 150 according to the fourth control parameter, and the main control board 120 is further configured to inquire a working state of the temperature control module 150 by sending the inquiry command.
The reaction module 210 is an optical sensor, the temperature control module 150 is configured to be connected to the optical sensors in a one-to-one correspondence manner, the temperature control module 150 is configured to control the working temperature of the optical sensor connected to the temperature control module 150 according to the fourth control parameter, and the temperature control module 150 feeds back the third state information to the terminal 110 through the main control board 120.
The temperature control module 150 may be a single chip microcomputer, and the temperature control module 150 may control the reaction temperature in the optical sensor.
The temperature required for the reaction to occur in each of the light sensors is different, and thus, each light sensor corresponds to one temperature control module 150. The temperature control module 150 is electrically connected to the main control board 120 through the sub-interface 1221, and a fourth control parameter for controlling the temperature control module 150 can be set through the human-computer interface of the terminal 110. The fourth control parameter includes a fourth control parameter address, the fourth control parameter address is used for identifying the temperature control modules 150 connected to different sub-interfaces 1221, the plurality of temperature control modules 150 all receive the fourth control parameter, but only the temperature control module 150 matched with the fourth control parameter address executes the fourth control parameter to control the temperature of different optical sensors.
The terminal 110 is further configured to send a query command to query the operating status of the temperature control module 150. The manner of identifying the query command by the temperature control module 150 is the same as that of identifying the fourth control parameter, and is not repeated herein.
The third status information includes third status information addresses corresponding to different temperature control modules 150, and the main control board 120 determines the temperature control module 150 that sends the third status information according to the third status information addresses, thereby determining the working condition of the corresponding temperature control module 150.
In this embodiment, the temperature control module 150 includes a heating unit for heating the reaction module 210 and a temperature control unit electrically connected to the heating unit to control a heating temperature of the heating unit.
Specifically, the heating unit supplies a PWM (Pulse Width Modulation) heating voltage to a heating resistor in the optical sensor, so that the optical sensor performs a chemiluminescent reaction at a desired temperature. The temperature control unit may be a PID control (proportional-integral-derivative) unit, which controls a heating temperature of the heating unit such that the light sensor operates at a constant temperature.
In some embodiments, the fourth control parameter comprises at least one of a set target temperature and a set temperature control parameter of the temperature control module 150; the third state information is at least one of a target temperature, a current temperature, and a temperature control parameter of the temperature control module 150; the query instruction includes at least one of viewing a current temperature, viewing a target temperature, and viewing a temperature control parameter.
The fourth control parameter covers each parameter that needs to be set by the temperature control module 150, so that the fourth control parameter can be set through the human-computer interface of the terminal 110 to modify each parameter in the temperature control module 150 without being set through the respective control circuit board of each temperature control module 150. The query instruction covers various working states that the temperature control modules 150 need to confirm, and the working state of each temperature control module can be queried by sending the query instruction through the human-computer interaction interface of the terminal 110. The third status information also covers various working conditions of the temperature control module 150, and the working conditions of the temperature control module 150 can be confirmed through the human-computer interface of the terminal 110, so as to monitor the temperature control module 150 in real time.
With continued reference to fig. 1 and fig. 2, the control system of the optoelectronic nose further includes a power switch relay 160, a plasma generator 170 and a water-cooling pump 180, the plasma generator 170 and the water-cooling pump 180 are electrically connected to the power switch relay 160, the plasma generator 170 is used for enhancing signals of the optical sensor, the water-cooling pump 180 is used for cooling the photon counter 130, the main control board 120 has a third interface 123, and the main control board 120 is electrically connected to the power switch relay 160 through the third interface 123.
The terminal 110 is configured to send a switch instruction, and the main control board 120 is configured to control the switching of the power switch relay 160 according to the switch instruction, so that when the power switch relay 160 is turned on, the plasma generator 170 and the water-cooled pump 180 are both turned on, and when the power switch relay 160 is turned off, the plasma generator 170 and the water-cooled pump 180 are both turned off.
The power switch relay 160 may control the plasma generator 170 and the water-cooled pump 180 to be turned on and off. The plasma generator 170 and the water-cooling pump 180 are both powered by a direct-current power supply, and the plasma generator 170 and the water-cooling pump 180 are both controlled to be switched on and off by a power switch relay 160.
The third interface 123 may be a GPIO (General-purpose input/output) interface. An on-off command can be sent at the human-computer interface of the terminal 110 to control the opening and closing of the plasma generator 170 and the water-cooling pump 180, without a user manually opening and closing the plasma generator 170 and the water-cooling pump 180.
The invention also provides an optoelectronic nose, which comprises an optoelectronic nose body 200 and the control system 100 of the optoelectronic nose provided by the embodiment and electrically connected with the optoelectronic nose body 200.
The structure and operation of the control system 100 of the optoelectronic nose have been described in detail in the above embodiments, and are not described in detail here.
The optoelectronic nose body 200 is a device that operates under the control of the control system 100 of the optoelectronic nose by using a photosensor as a reaction module 210, and the photosensor uses catalytic chemiluminescence as a principle. The optical sensor has higher detection sensitivity and thus can be used as the reaction module 210 of the optoelectronic nose.
With continued reference to fig. 2 and 3, optoelectronic nose body 200 further includes a syringe pump 220, a multi-channel switching valve 230, and a gas mass flow controller 240. Now, briefly explaining the working process of the photoelectron nose, air enters from the gas mass flow controller 240 as carrier gas a, the gas B to be detected is injected from the injection pump 220, the carrier gas a and the gas B to be detected are merged and then enter the plasma generator 170, are activated in the plasma generator 170, then enter the multi-channel switching valve 230, and respectively flow into different reaction modules 210 through the multi-channel switching valve 230, the reaction modules 210 are adjusted to different reaction temperatures through the temperature control module 150, so as to perform catalytic chemiluminescence reaction, and photons obtained by the reaction are collected by the photon counter 130, so as to obtain reaction data. The photon counter 130 can move among the plurality of reaction modules 210 under the action of the moving module 140, the photon counter 130 is further cooled by the water-cooled pump 180, and the exhaust gas C after the reaction is completed is discharged from the other end of the reaction module 210.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A control system for an optoelectronic nose comprises a terminal, a main control board and a photon counter, wherein the terminal is electrically connected with the main control board, and the photon counter is electrically connected with the main control board;
the terminal is used for setting a first control parameter and a second control parameter;
the main control board is used for acquiring the first control parameter and controlling the photon counter according to the first control parameter;
the photon counter is used for collecting the measurement data of the reaction module in the photoelectron nose and sending the measurement data to the terminal through the main control board;
the terminal is used for receiving the measurement data;
the main control board is also used for being electrically connected with an injection pump, a multi-channel switching valve and a gas mass flow controller in the photoelectron nose;
the main control board is used for obtaining the second control parameter and controlling the injection pump, the multi-channel switching valve and the gas mass flow controller according to the second control parameter, and the injection pump, the multi-channel switching valve and the gas mass flow controller feed back first state information to the terminal through the main control board.
2. The control system of the optoelectronic nose according to claim 1, wherein the number of the photon counters is multiple, and the photon counters are disposed in one-to-one correspondence with the plurality of reaction modules in the optoelectronic nose, and the photon counters are used for collecting the measurement data of the reaction modules corresponding to the photon counters;
or the mobile module is connected with the photon counter and used for controlling the photon counter to move between the reaction modules in the optoelectronic nose, so that the photon counter collects the measurement data of the reaction modules corresponding to the photon counter.
3. The control system of an optoelectronic nose of claim 2, wherein the first control parameter includes at least one of a sampling time, a power on, and a power off;
the second control parameters include at least one of an initialization setting, an injection speed setting, an injection volume setting, and an auto-injection setting of the injection pump, the second control parameters further include at least one of a control flow setting and a measured current flow setting of the gas mass flow controller, the second control parameters further include at least one of a changed switching speed setting and a changed switching position of the multi-channel switching valve;
the first state information includes at least one of an injection pump state and an injection process state of the injection pump, the first state information further includes at least one of a current set flow value and a current measured flow value of the gas mass flow controller, the first state information further includes at least one of a set switching speed and a current switching valve position of the multi-channel switching valve.
4. The control system of the optoelectronic nose according to claim 3, wherein the main control board has a first interface and a second interface, the main control board is electrically connected to the photon counter through the first interface, the second interface includes a plurality of sub-interfaces, and the injection pump, the multi-channel switching valve and the gas mass flow controller in the optoelectronic nose are electrically connected to the main control board through different sub-interfaces respectively;
the mobile module is electrically connected with the main control board through the sub-interface;
the terminal is used for setting a third control parameter, the main control board is used for obtaining the third control parameter and controlling the mobile module according to the third control parameter, and the mobile module feeds back second state information to the terminal through the main control board.
5. The optoelectronic nose control system of claim 4, wherein the third control parameter includes at least one of a set movement speed, a module zeroing, and a set movement position of the movement module, and the second status information is at least one of whether the movement module is zeroed and moved.
6. The control system of an optoelectronic nose of claim 5, further comprising a plurality of temperature control modules electrically connected in one-to-one correspondence with the sub-interfaces;
the terminal is used for setting a fourth control parameter and sending an inquiry instruction, the main control board is used for acquiring the fourth control parameter and controlling the temperature control module according to the fourth control parameter, and the main control board is also used for inquiring the working state of the temperature control module through the sending inquiry instruction;
the reaction module is an optical sensor, the temperature control module is used for being connected with the optical sensor in a one-to-one correspondence mode, the temperature control module is used for controlling the working temperature of the optical sensor connected with the temperature control module according to the fourth control parameter, and the temperature control module feeds back third state information to the terminal through the main control board.
7. The control system of an optoelectronic nose of claim 6, wherein the temperature control module comprises a heating unit for heating the reaction module and a temperature control unit electrically connected with the heating unit to control a heating temperature of the heating unit.
8. The control system of an optoelectronic nose of claim 6, wherein the fourth control parameter includes at least one of a set target temperature and a set temperature control parameter of the temperature control module;
the third state information is at least one of a target temperature, a current temperature and a temperature control parameter of the temperature control module;
the query instruction includes at least one of a view current temperature, a view target temperature, and a view temperature control parameter.
9. The control system of the optoelectronic nose according to any one of claims 1 to 8, further comprising a power switch relay, a plasma generator and a water-cooling pump, wherein the plasma generator and the water-cooling pump are electrically connected with the power switch relay, the plasma generator is used for enhancing signals of the optical sensor, the water-cooling pump is used for cooling the photon counter, the main control board is provided with a third interface, and the main control board is electrically connected with the power switch relay through the third interface;
the terminal is used for sending a switching instruction, the main control board is used for controlling the switching of the power switch relay according to the switching instruction, so that when the power switch relay is switched on, the plasma generator and the water-cooling pump are both switched on, and when the power switch relay is switched off, the plasma generator and the water-cooling pump are both switched off.
10. An optoelectronic nose comprising an optoelectronic nose body and a control system for the optoelectronic nose of any one of claims 1 to 9 electrically connected to the optoelectronic nose body.
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