WO2024014200A1 - 電気化学センサ回路、匂い成分識別用電気化学センサ回路、及び匂い識別システム - Google Patents
電気化学センサ回路、匂い成分識別用電気化学センサ回路、及び匂い識別システム Download PDFInfo
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- WO2024014200A1 WO2024014200A1 PCT/JP2023/021391 JP2023021391W WO2024014200A1 WO 2024014200 A1 WO2024014200 A1 WO 2024014200A1 JP 2023021391 W JP2023021391 W JP 2023021391W WO 2024014200 A1 WO2024014200 A1 WO 2024014200A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/4166—Systems measuring a particular property of an electrolyte
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
Definitions
- the present technology relates to an electrochemical sensor circuit, an electrochemical sensor circuit for identifying odor components, and an odor identification system. More specifically, the present invention relates to an electrochemical sensor circuit, an electrochemical sensor circuit for identifying odor components, and an odor identification system that can identify chemical substances in a sample with high accuracy.
- Electrochemical sensors are currently one of the most common sensors used in industry, and are used in a wide range of applications such as gas detection, water quality testing, bioanalysis, and food testing. By using this type of sensor, a chemical substance can be detected based on electronic parameters generated using an electrochemical reaction derived from the type and concentration of the chemical substance.
- Patent Document 1 describes a circuit that includes a sensor input node, first and second differential sensor feedback nodes, and a sensor output node.
- An impedance characteristic sensor interface circuit that independently delivers a differentially stable bias signal component and a differential time-varying AC excitation signal component for testing the impedance of an electrochemical sensor having an impedance excitation amplifier circuit, the impedance excitation amplifier circuit a first pair of differential inputs coupled to receive the differential time-varying AC excitation signal components for communicating with the first and second amplifier input nodes between the first and second amplifier input nodes; a second pair of differential inputs coupled to receive the differentially stabilized bias signal component for communicating to the first and second amplifier input nodes from the differential sensor feedback node for communicating to the first and second amplifier input nodes; an impedance excitation amplifier circuit including a third differential input pair coupled to receive a feedback signal and the differential time-varying AC excitation for communicating to a sensor response signal output node during the sensor impedance test mode;
- an AC signal generated is applied to an electrochemical sensor that detects gas, and the response signal is measured.
- the response signal output circuit detects a change in AC impedance of the electrochemical sensor, and detects the gas. It is possible to determine the adsorption state of.
- the main purpose of this technology is to provide a technology that can identify chemical substances in a sample with high accuracy.
- At least two or more electrochemical sensor sections are respectively connected to one AC signal generation section, and at least one or more response signal outputting a response signal from the electrochemical sensor section.
- An electrochemical sensor circuit is provided, comprising an output circuit and an identification system section that identifies a chemical substance in a sample based on the output from the response signal output circuit.
- At least two or more electrochemical sensor units are respectively connected to one AC signal generation unit, and at least one or more response signal outputting a response signal from the electrochemical sensor unit.
- the present invention also provides an electrochemical sensor circuit for identifying odor components, which includes an output circuit and an identification system unit that identifies odor components in a sample based on the output from the response signal output circuit.
- At least two or more electrochemical sensor sections are respectively connected to one AC signal generation section, and at least one or more response signal outputs a response signal from the electrochemical sensor section.
- An electrochemical sensor circuit for identifying odor components comprising an output circuit and an identification system section for identifying odor components in a sample based on the output from the response signal output circuit; and an odor holding section for holding odor components.
- the present invention also provides an odor identification system comprising: a cartridge comprising a cartridge;
- FIG. 1 is a circuit diagram showing the basic configuration of an electrochemical sensor circuit 1.
- FIG. 2 is a diagram showing an example of a specific configuration of a response signal output circuit 13.
- FIG. 2 is a diagram showing an example of a specific configuration of an identification system unit 14.
- FIG. 4 is a diagram showing an example of a specific configuration of the identification system section 14, which is different from that in FIG. 3.
- FIG. 4 is a diagram showing an example of a specific configuration of the identification system section 14, which is different from FIGS. 3 and 4.
- FIG. 2 is a diagram showing an example of a specific configuration of an identification system section 14 and a sample generation section 15.
- FIG. 2 is a circuit diagram showing a configuration of circuit configuration example 1.
- FIG. 3 is a circuit diagram showing a configuration of circuit configuration example 2.
- FIG. 7 is a circuit diagram showing a configuration of circuit configuration example 3; FIG. 7 is a circuit diagram showing a configuration of circuit configuration example 4.
- FIG. 12 is a circuit diagram showing a configuration of circuit configuration example 5.
- FIG. 7 is a circuit diagram showing the configuration of circuit configuration example 6.
- FIG. 7 is a circuit diagram showing a configuration of circuit configuration example 7.
- 12 is a circuit diagram showing the configuration of circuit configuration example 8.
- FIG. 12 is a circuit diagram showing the configuration of circuit configuration example 9.
- FIG. 10 is a circuit diagram showing the configuration of circuit configuration example 10.
- FIG. 12 is a circuit diagram showing the configuration of circuit configuration example 11.
- FIG. 1 is a perspective view showing an example of an embodiment of a cartridge 10.
- FIG. 19 is a sectional view of the cartridge 10 of the embodiment shown in FIG. 18.
- FIG. 1 is a schematic diagram showing an example of an embodiment of an odor identification system 3.
- FIG. 1 is a perspective view showing an example of an embodiment of a cartridge 10.
- FIG. 19
- Electrochemical sensor circuit 1 Basic configuration of electrochemical sensor circuit 1 (2) AC signal generation section 11 (3) Electrochemical sensor section 12 (4) Response signal output circuit 13 (5) Identification system section 14 (6) Sample generation section 15 (7) Specific configuration of electrochemical sensor circuit 1 (7-1) Circuit configuration example 1 (7-2) Circuit configuration example 2 (7-3) Circuit configuration example 3 (7-4) Circuit configuration example 4 (7-5) Circuit configuration example 5 (7-6) Circuit configuration example 6 (7-7) Circuit configuration example 7 (7-8) Circuit configuration example 8 (7-9) Circuit configuration example 9 (7-10) Circuit configuration example 10 (7-11) Circuit configuration example 11 2. Second embodiment (electrochemical sensor circuit 2 for identifying odor components) 3.
- odor identification system 3 (1) Basic configuration of odor identification system 3 (2) Electrochemical sensor circuit 2 for odor component identification (3) Cartridge 10 (3-1) Odor holding section 101 (3-2) Ventilation section 102 (3-3) Connecting part 103 (3-4) Emission part 104 (3-5) Example of operation of cartridge 10 (4) Sample generation section 34 (4-1) Cartridge holding section 31 (4-2) Front storage section 32 (4-3) Back storage section 33 (5) Application examples of odor identification system 3
- FIG. 1 is a circuit diagram showing the basic configuration of an electrochemical sensor circuit 1.
- the electrochemical sensor circuit 1 includes at least two electrochemical sensor sections 12 each connected to one AC signal generation section 11, and outputs a response signal from the electrochemical sensor section 12. and an identification system section 14 that identifies chemical substances in a sample based on the output from the response signal output circuit 13. Further, a sample generating section 15 or the like may be provided as necessary.
- the AC signal generation unit 11 generates an AC signal.
- the frequency of the AC signal generation section 11 can be varied within an arbitrary range and used variably. Thereby, for example, AC signals can be applied at different frequencies to each electrochemical sensor section 12, which will be described later.
- the frequency of the AC signal generation section 11 is not particularly limited, and any frequency (for example, in the range of 1 kHz to 10 MHz) can be used.
- the frequency of the AC signal generation section 11 may be controlled based on the identification result of the identification system section 14, which will be described later. Specifically, it will be explained in "(7) Specific configuration of electrochemical sensor circuit 1".
- the number of AC signal generation sections 11 is not particularly limited as long as there is one or more.
- the frequencies output from each AC signal generation section 11 may be the same, but some or all of them may be different.
- each row or column of the electrochemical sensor units 12 or some response signal output circuits 13 arranged in an array has the AC signal generation units 11 with different frequencies. You can leave it there. Specifically, it will be explained in "(7) Specific configuration of electrochemical sensor circuit 1".
- the electrochemical sensor unit 12 generates an electronic parameter (e.g., current, voltage, capacitance, impedance, etc., preferably impedance) as a response signal by using an electrochemical reaction derived from the type, concentration, etc. of a chemical substance. generate.
- an electronic parameter e.g., current, voltage, capacitance, impedance, etc., preferably impedance
- the number of electrochemical sensor sections 12 is not particularly limited as long as there are at least two or more electrochemical sensor sections 12 connected to one AC signal generation section 11, respectively.
- a "chemical substance” is an object to be identified contained in a sample, and means any chemical substance such as a single substance, a pure substance consisting of a compound, or a mixture. Moreover, its origin is not particularly limited, and it is not limited to natural origin, but may be artificially derived.
- sample means any sample including a biological sample.
- state of the sample is not particularly limited, but is preferably in any one of gas, liquid, semi-solid, and solid, and particularly preferably gas.
- gas refers to something that is completely vaporized at room temperature (25° C.).
- liquid refers to something that is completely liquefied at room temperature.
- solid refers to something that is completely solidified at room temperature.
- si-solid refers to something that has a melting point of 25° C. or higher but is not completely solidified at room temperature.
- the chemical substance in the sample may be fixed to the sample by adhesion, adsorption, embedding, etc., or may be floating in the sample without being fixed.
- the electrochemical sensor section 12 is not particularly limited, and conventionally known ones can be used. Among the electrochemical sensors known in the art, amperometric electrochemical sensors (ie amperometric sensors) are common. Amperometric electrochemical sensors basically have at least a working electrode, a counter electrode, and a reference electrode.
- the working electrode undergoes oxidation on the surface of the working electrode when a predetermined voltage is applied to the working electrode with respect to a reference electrode using an electrical circuit such as a potentiostat with a sample present between the working electrode and the counter electrode. It is configured to cause a reduction reaction. More specifically, the working electrode is a membrane that causes a redox reaction of chemical substances in the sample on its surface when a predetermined voltage is applied between the working electrode and the counter electrode with the sample attached. , and a support member formed on one side of the membrane.
- membrane includes membranes of any stiffness, including very stiff membranes and very flexible membranes.
- the film include metal films such as platinum and gold; films such as graphite carbon and boron-doped diamond; and polymer films made of conductive polymers such as polyaniline and polythiophene.
- the support member is preferably made of a conductive material, such as a silicon substrate or a metal substrate.
- the metal substrate include platinum (Pt), gold (Au), copper (Cu), palladium (Pd), nickel (Ni), silver (Ag), and the like.
- metal films can be formed by sputtering, vapor phase synthesis, etc., and polymer films can be formed by conventionally known methods such as chemical modification.
- the size for example, several ⁇ m ⁇ 2 to several mm ⁇ 2 ), area, thickness, etc. of the film are not particularly limited.
- the reference electrode and the counter electrode are provided near the working electrode, and the counter electrode is provided so as to surround the working electrode and the reference electrode.
- the counter electrode is an electrode that allows current generated by an electrochemical reaction to flow through the working electrode.
- the counter electrode for example, an electrode made of metal such as Pt, Au, Cu, Pd, Ni, Ag, a diamond electrode, a boron-doped diamond electrode, a carbon electrode, etc. can be used.
- the counter electrode can be formed by a conventionally known method such as a semi-additive method or a subtractive method.
- the reference electrode is an electrode that serves as a reference when determining the potential of the working electrode.
- a silver/silver chloride (Ag/AgCl) electrode can be used.
- standard hydrogen electrodes, reversible hydrogen electrodes, palladium-hydrogen electrodes, saturated calomel electrodes, carbon electrodes, diamond electrodes, boron-doped diamond electrodes, and the like can be used.
- an electrode made of metal such as Pt, Au, Cu, Pd, Ni, Ag, etc. may be used as the reference electrode.
- the reference electrode can be formed by conventionally known techniques such as dispensing and screen printing.
- electrochemical sensor units 12 may be arranged in an array. Specifically, it will be explained in "(7) Specific configuration of electrochemical sensor circuit 1".
- the two or more electrochemical sensor sections 12 may all be of the same type, or some or all of them may be of different types.
- two or more electrochemical sensor sections 12 of the same type are arranged, it is also possible to measure the two or more electrochemical sensor sections 12 of the same type at different frequencies. Specifically, it will be explained in "(7) Specific configuration of electrochemical sensor circuit 1".
- an electrochemical sensor group having two or more electrochemical sensor units 12 and having a plurality of electrochemical sensor groups, it is possible to perform measurements at different frequencies for each electrochemical sensor group. Good too. Specifically, it will be explained in "(7) Specific configuration of electrochemical sensor circuit 1".
- the response signal output circuit 13 outputs a response signal from the electrochemical sensor section 12.
- the number of response signal output circuits 13 is not particularly limited as long as there is one or more.
- FIG. 2 is a diagram showing an example of a specific configuration of the response signal output circuit 13.
- the response signal output circuit 13 is not particularly limited, at least a portion of the response signal output circuit 13 includes an IQ conversion circuit and an AD conversion circuit. Thereby, identification accuracy can be improved.
- the IQ conversion circuit expands (converts) the target signal into a complex signal. Specifically, an I signal that is in phase with the reference signal (In-Phase) and a Q signal that is in quadrature phase (Quadrature-Phase) that is 90° out of phase with the reference signal are generated.
- the IQ conversion circuit supplies these I signals and Q signals to the AD conversion circuit.
- the IQ conversion circuit includes, for example, a transimpedance amplifier (TIA), an analog multiplier, and a low-pass filter (LPF).
- the TIA converts the current output from the electrochemical sensor section 12 into a voltage signal.
- the converted voltage signal is processed at high speed by an analog multiplier.
- the analog multiplier is not particularly limited, and any conventionally known analog multiplier can be used. Specifically, for example, a commonly used Gilbert cell type analog multiplier may be used.
- the LPF extracts a direct current (DC) component from the calculation result of the analog multiplier.
- DC direct current
- the LPF is not particularly limited, and includes an RC low-pass filter and the like.
- the AD conversion circuit converts the analog I and Q signals into digital signals and supplies them to the identification system unit 14, which will be described later.
- the AD conversion circuit is not particularly limited, and a conventionally known single slope AD converter can be used.
- a single slope type AD converter converts an analog signal to be processed into a digital signal based on the time from the start of conversion until the reference voltage and the voltage of the signal to be processed match.
- a reference voltage is supplied by using a comparator (voltage comparator) that compares the single slope waveform and the output signal DC level of the IQ conversion circuit, and a counter that measures the comparison time.
- counting using a clock signal is started, and by comparing the DC level of the signal output from the IQ conversion circuit with the reference voltage, AD conversion is performed by counting until a pulse signal is obtained.
- the AD conversion circuit may reduce noise by performing multi-sampling (multiple operations). Thereby, identification accuracy can be improved.
- the response signal output circuit 13 can freely change circuit constants by changing the band cut by the LPF, etc., depending on the type and size of the membrane constituting the electrochemical sensor section 12. You may. Thereby, circuit constants can be optimized according to the type, size, etc. of the film, and identification accuracy can be improved.
- At least a portion of the response signal output circuits 13 may be arranged in an array.
- at least two or more electrochemical sensor sections 12 may be connected to one response signal output circuit 13. Specifically, it will be explained in "(7) Specific configuration of electrochemical sensor circuit 1".
- the response signal output circuit 13 has two or more switches, and the response signal output circuit 13 has two or more switches, and , the frequency of each switch and the AC signal generation section 11 may be controlled. Specifically, it will be explained in "(7) Specific configuration of electrochemical sensor circuit 1".
- the identification system section 14 identifies the chemical substance in the sample based on the output from the response signal output circuit 13.
- the number of identification system units 14 is not particularly limited as long as there is one or more.
- the identification system section 14 may refer to the response signal of each electrochemical sensor section 12 with a database to identify the chemical substance in the sample. Specifically, it will be explained in "(7) Specific configuration of electrochemical sensor circuit 1".
- FIG. 3 is a diagram showing an example of a specific configuration of the identification system section 14.
- the identification system section 14 includes at least an impedance calculation means 141, a quantitative means 142, and an identification means 143. Further, as necessary, as shown in FIGS. 4 and 5, a notification means 144, a display means 145, a communication means 146, etc. may be provided.
- the impedance calculation means 141 calculates impedance based on the digital signal output from the AD conversion circuit in the response signal output circuit 13.
- the value of impedance which is a response signal, changes depending on the type, concentration, etc. of the chemical substance. Therefore, the quantitative means 142 quantitatively determines the chemical substance in the sample based on the calculated impedance result.
- the identification means 143 identifies the chemical substance in the sample based on the quantified result of the chemical substance in the sample. For example, the identification of one or more chemical substances, the number of types of chemical substances, the concentration of chemical substances, etc. are determined.
- FIG. 4 is a diagram showing an example of a specific configuration of the identification system section 14, which is different from that in FIG. 3.
- the identification system section 14 may include a notification means 144 and/or a display means 145.
- the notification means 144 is controlled to issue an alert for the purpose of calling attention to, warning, etc. based on the identification result from the identification system section 14.
- the display unit 145 controls the identification result from the identification system section 14 to be displayed on a display, monitor, smartphone, tablet terminal, wearable terminal, digital signage, etc. Since the electrochemical sensor circuit 1 has these means, it is possible to confirm data on chemical substances identified on site.
- FIG. 5 is a diagram showing an example of a specific configuration of the identification system section 14, which is different from FIGS. 3 and 4.
- the identification system section 14 includes a communication means 146.
- the communication means 146 communicates the chemistry in the sample that is quantified remotely via the network. A signal relating to a substance result is obtained, and based on the signal, a chemical substance in the sample is identified. This allows data on identified chemical substances to be confirmed even in remote locations.
- the communication means 146 may be arranged between the impedance calculation means 141 and the quantitative means 142, or between the identification means 143 and the notification means 144 and/or the display means 145. You can leave it there.
- the electrochemical sensor circuit 1 may include a sample generation section 15, if necessary.
- the sample generation section 15 generates a sample containing a chemical substance based on the identification result of the identification system section 14.
- the sample generation unit 15 is connected to the identification system unit 14 wirelessly or by wire, and targets samples containing chemical substances (in particular, odor components) based on the identification results output from the identification system unit 14. Spray the information into the space.
- FIG. 6 is a diagram showing an example of a specific configuration of the identification system section 14 and sample generation section 15.
- the sample generating section 15 includes at least a control means 151 and a generating section 152. Further, it may include a communication means 153, a mixing section 154, etc., if necessary.
- the control means 151 determines the type, concentration, etc. of one or more chemical substances to be generated in the target space based on the signal indicating the identification result obtained from the identification system section 14.
- the type, concentration, etc. of the chemical substance in the sample to be generated may be the same as the identification result, or may be newly prepared based on the identification result.
- the control means 151 may refer to a database on a network such as a server or a cloud system.
- the generating unit 152 generates a sample in the target space based on the type, concentration, etc. of the chemical substance determined by the control means 151. At this time, the sample may be in any state of gas, liquid, semi-solid, or solid, but gas is particularly preferred.
- the generation unit 152 may also control the intensity of sample generation in the target space; for example, if a chemical substance is present at a concentration equal to or higher than a preset threshold, the generation unit 152 may weaken the generation of the sample. or stop the generation of the sample. Furthermore, the generation unit 152 may change the intensity of generation of the sample over time.
- each generation part 152 there may be two or more generation parts 152, and in that case, samples containing the same chemical substance may be generated from each generation part 152, and some or Samples containing different chemical substances may be generated from all the generating units 152.
- the communication means 153 remotely acquires a signal indicating the identification result via the network. Thereby, a sample containing a chemical substance can be generated at a remote location based on the identification result of the identification system unit 14.
- the communication means 153 is not an essential component, and even if the communication means 153 is not provided, a sample containing a chemical substance identified at the site can be generated.
- the mixing unit 154 mixes the samples from each generation unit 152 at an arbitrary ratio. Thereby, it is possible to generate a mixed sample in which samples containing chemical substances are mixed in the target space. Further, the mixing unit 154 may control the intensity of generation of the mixed sample in the target space, and may change the ratio at which the samples from each generation unit 152 are mixed over time.
- the numbers of the AC signal generation section 11, the electrochemical sensor section 12, the response signal output circuit 13 including the IQ conversion circuit and the AD conversion circuit, and the odor identification system section 14 in each circuit configuration example are merely examples, and the numbers of the odor identification system section 14 are merely examples.
- the membranes of two or more electrochemical sensor sections 12 in each circuit configuration example are merely given different names for convenience; they may all be of the same type, or some or all of them may be of different types. It may be something.
- FIG. 7 is a circuit diagram showing the configuration of circuit configuration example 1.
- circuit configuration example 1 nine electrochemical sensor sections 12 consisting of membranes A to I are arranged in an array for one AC signal generation section 11.
- the response signal output circuits 13 are arranged in a column direction with respect to the electrochemical sensor sections 12 arranged in an array. With such a circuit configuration, the layout can be made more efficient and the area of the entire electrochemical sensor circuit 1 can be reduced.
- the response signal output circuits 13 may be laid out in the row direction for the electrochemical sensor sections 12 arranged in an array.
- FIG. 8 is a circuit diagram showing the configuration of circuit configuration example 2.
- circuit configuration example 2 there are nine electrochemical sensor sections 12 consisting of membranes A to I for one AC signal generation section 11, and a response signal output circuit 13 is configured for each electrochemical sensor section 12.
- IQ conversion circuits are arranged in arrays.
- the AD conversion circuits forming the response signal output circuit 13 are arranged in a column direction with respect to the IQ conversion circuits arranged in an array.
- the layout can be made more efficient and the area of the entire electrochemical sensor circuit 1 can be reduced.
- the AD conversion circuits may be laid out in the row direction with respect to the IQ conversion circuits arranged in an array.
- FIG. 9 is a circuit diagram showing the configuration of circuit configuration example 3.
- circuit configuration example 3 there are three electrochemical sensor sections 12 consisting of membranes A to C for one AC signal generation section 11, and each electrochemical sensor section 12 is connected to an IQ conversion circuit. Two or more IQ conversion circuits are connected to one AD conversion circuit.
- a switch may be provided between the AD conversion circuit and the IQ conversion circuit to control electrical connection. Examples of the switch include a transistor.
- FIG. 10 is a circuit diagram showing the configuration of circuit configuration example 4.
- circuit configuration example 4 there are three electrochemical sensor sections 12 consisting of membranes A to C for one AC signal generation section 11, and one response signal output circuit 13 for each electrochemical sensor section 12. each connected.
- a switch may be provided between the IQ conversion circuit constituting the response signal output circuit 13 and each electrochemical sensor section 12 to control electrical connection. Examples of the switch include a transistor.
- two or more electrochemical sensor sections 12 connected to the response signal output circuit 13 may be of the same type. Thereby, the sensitivity of the electrochemical sensor section 12 can be adjusted.
- FIG. 11 is a circuit diagram showing the configuration of circuit configuration example 5.
- the configuration other than the identification system unit 14 is the same as circuit configuration example 4.
- the identification system section 14 identifies the chemical substance in the sample by referring to a database on a network such as a server or a cloud system for the response signal of each electrochemical sensor section 12.
- the database may be constructed using an AI learning method such as deep learning. Thereby, it is possible to improve identification accuracy.
- FIG. 12 is a circuit diagram showing the configuration of circuit configuration example 6.
- circuit configuration example 6 there are three electrochemical sensor sections 12 consisting of membranes A to C for one AC signal generation section 11, and each response signal output circuit 13 is provided for each electrochemical sensor section 12. It is connected.
- the frequency of the AC signal generation section 11 is used variably. With such a circuit configuration, the number of AC signal generation units 11 can be reduced, and the layout can be made more efficient and the overall area of the electrochemical sensor circuit 1 can be reduced.
- the frequency in the AC signal generation section 11 may be controlled by feeding back the identification result of the identification system section 14. Thereby, it is possible to improve identification accuracy and identification speed.
- FIG. 13 is a circuit diagram showing the configuration of circuit configuration example 7.
- circuit configuration example 7 there are three electrochemical sensor sections 12 consisting of membranes A to C for one AC signal generation section 11, and a response signal output circuit 13 having a switch for each electrochemical sensor section 12. is connected.
- the frequency of the AC signal generation section 11 is used variably, and the circuit configuration example 7 includes a control section including a frequency control section and a switch control section.
- the control section controls the frequency of each switch and the AC signal generation section 11 in accordance with each electrochemical sensor section 12 that measures electrical parameters such as impedance.
- the frequency of the AC signal generation section 11 can be controlled, for example, by changing the frequency to 100 KHz when reading out the electrochemical sensor section 12 using the membrane A.
- Examples of the switch include a transistor and the like.
- the frequency to be observed can be changed according to the type and size of the membrane, and the response signals for each frequency can be weighted to identify chemical substances in the sample.
- the layout can be made more efficient and the area of the entire electrochemical sensor circuit 1 can be reduced.
- FIG. 14 is a circuit diagram showing the configuration of circuit configuration example 8.
- the configuration other than the AC signal generation section 11 is the same as the circuit configuration example 2.
- three AC signal generation units 11 having different frequencies (for example, 10 kHz, 100 kHz, and 1 MHz) are arranged for each row. With such a circuit configuration, read speed can be increased.
- two or more AC signal generation units 11 having different frequencies may be arranged for each column.
- each electrochemical sensor section 12 may be measured at different frequencies by two or more AC signal generation sections 11.
- FIG. 15 is a circuit diagram showing the configuration of circuit configuration example 9.
- an electrochemical sensor group a has two electrochemical sensor sections 12 made up of membranes A and B
- an electrochemical sensor group b has two electrochemical sensor sections 12 made up of membranes C and D.
- a plurality of electrochemical sensor groups may be configured by two or more electrochemical sensor units 12 having similar frequencies to be observed, and measurements may be performed at different frequencies for each electrochemical sensor group.
- the frequency of the AC signal generation unit 11 is used variably.
- the AC signal is
- the frequency of the generation unit 11 can be changed and optimized for each electrochemical sensor group. With such a circuit configuration, the layout can be made more efficient and the area of the entire electrochemical sensor circuit 1 can be reduced.
- FIG. 16 is a circuit diagram showing the configuration of circuit configuration example 10.
- Circuit configuration example 10 is the same as circuit configuration example 9 in that it includes an electrochemical sensor group a and an electrochemical sensor group b, but the response signal output circuit 13 is shared across the electrochemical sensor groups. .
- the response signal output circuit 13 shared by the electrochemical sensor groups may be connected by a switch. Examples of the switch include a transistor. With such a circuit configuration, the number of response signal output circuits 13 can be reduced, and the layout can be made more efficient and the overall area of the electrochemical sensor circuit 1 can be reduced.
- FIG. 17 is a circuit diagram showing the configuration of circuit configuration example 11.
- Circuit configuration example 11 is the same as circuit configuration examples 9 and 10 in that it includes an electrochemical sensor group a and an electrochemical sensor group b, but a part of the response signal output circuit 13 straddles the electrochemical sensor group. They share an AD conversion circuit.
- an AD conversion circuit shared by the electrochemical sensor groups may be connected by a switch. Examples of the switch include a transistor. With such a circuit configuration, the number of AD conversion circuits can be reduced, and the layout can be made more efficient and the overall area of the electrochemical sensor circuit 1 can be reduced.
- Second embodiment electrochemical sensor circuit 2 for identifying odor components
- the electrochemical sensor circuit 2 for identifying odor components includes at least two or more electrochemical sensor sections 12 each connected to one AC signal generation section 11, and a It has at least one or more response signal output circuits 13 that output response signals, and an identification system section 14 that identifies odor components in the sample based on the output from the response signal output circuits 13. That is, the electrochemical sensor circuit 1 described above is used for identifying odor components, and its configuration is the same as that described above, so a description thereof will be omitted here.
- odor component may include any component, among the above-mentioned chemical substances, that stimulates some or all of the receptors present in the nasal cavity, such as odor molecules.
- odor molecules include any components that stimulate some or all of these receptors.
- trigeminal nerve receptors in the nasal cavity that control stimuli such as cold, hot, and pain
- the odor components used in this technology include any components that stimulate some or all of these receptors. It is a broad concept that includes Specifically, for example, when menthol is used as an odor component, menthol can act as a stimulus via olfactory receptors as well as a cold sensation via trigeminal nerve receptors (TRPA1 channel).
- TRPA1 channel trigeminal nerve receptors
- FIG. 20 is a schematic diagram showing an example of an embodiment of the odor identification system 3.
- the odor identification system 3 according to the present technology includes the above-described electrochemical sensor circuit 2 for identifying odor components, and a cartridge 10 (see FIG. 18) that includes an odor holding section 101 that holds odor components. Further, a sample generating section 34 or the like may be provided as necessary.
- Electrochemical sensor circuit 2 for identifying odor components
- the electrochemical sensor circuit 2 for identifying odor components is the same as that described in "2. Second Embodiment (Electrochemical sensor circuit 2 for identifying odor components)", so a description thereof will be omitted here.
- FIG. 18 is a perspective view showing an example of an embodiment of the cartridge 10, and FIG. 19 is a sectional view of the cartridge 10 of the embodiment shown in FIG.
- the cartridge 10 includes at least an odor holding section 101 that holds odor components. Further, it may include a ventilation section 102, a connecting section 103, a discharge section 104, etc., as necessary.
- the odor holding part 101 is a part that holds odor components, and includes, for example, an impregnating agent, a container part that accommodates the impregnating agent, and a lid part that fits into the container part.
- the material forming the impregnating agent is not particularly limited as long as it can retain the odor component, and is made of, for example, an organic polymer material so that the odor component can easily infiltrate.
- organic polymer materials include polyvinyl chloride, polyethylene, phenol resin, olefin resin, nylon, polyester, synthetic rubber, silicone resin, natural rubber, protein, nucleic acid, lipid, polysaccharide, or one or two of these. More than one species can be used in any combination.
- polymer resins such as acrylic resin, urethane resin, ABS resin, polyetheretherketone (PEEK) resin, polyacetal (POM) resin, fluororesin, cycloolefin polymer resin, polyimide resin; stainless steel, Metals such as aluminum; inorganic crystals such as quartz; glass, etc., or a combination of one or more of these may be used.
- the impregnating agent may be formed porous, and for example, a mesh structure, cork, mesoporous silica, calcium carbonate, etc. can be used.
- it may be formed into a fibrous structure or a layered structure (for example, clay mineral, etc.).
- the form of the impregnating agent is not particularly limited, but may be sheet-like, mesh-like, strip-like (including its dense form), particulate form (including its dense form), gel-like, liquid form (the surface tension of the carrier, etc.) ), foam-like, three-dimensional structures (for example, sword-shaped, spiral-shaped, spring-like, etc.), string-like (including dense bodies thereof), and the like.
- the odor components retained in the impregnating agent are not particularly limited, and include, for example, liquid fragrances, powder fragrances, etc., as they are, or those dissolved or dispersed in an appropriate solvent, and essential oils, as they are, or diluted with an appropriate solvent. As long as it is a component that generates an odor, such as fruit juice, food, drink, etc. as it is, or dissolved or dispersed in an appropriate solvent, one type or a combination of two or more of these can be used freely.
- the container part preferably has a two-layer structure, for example, an inner layer part that forms the inside that holds the impregnating agent, and an outer layer part that forms the outside of the container part.
- the lid portion has an opening at a position corresponding to the connection opening 40 (40a, 40b) described below. Thereby, air can flow into the container part and air containing odor components can be efficiently discharged to the outside of the container part.
- the ventilation section 102 has at least a ventilation opening 30 that can be opened and closed.
- the ventilation section 102 can be divided into two sections (a first ventilation section 102a, a second ventilation section 102b) by, for example, two ventilation openings 30 (30a, 30b).
- the vent openings 30 include an inflow vent opening 30a for allowing air to flow into the interior of the cartridge 10, and an ejection vent opening 30a for discharging odor-containing air. 30b.
- an opening/closing mechanism can be connected to the ventilation openings 30 (30a, 30b).
- the specific structure of the opening/closing mechanism is not particularly limited as long as the ventilation openings 30 (30a, 30b) can be opened and closed, and can be freely designed.
- an opening/closing mechanism including a sealing lid 1021 (1021a, 1021b), a shaft 1022, and a spring 1023 (1023a, 1023b) may be provided.
- the ventilation section 102 preferably has a two-layer structure, for example, an inner layer member that houses the opening/closing mechanism and an outer layer member that forms the outside of the ventilation section 102.
- the connecting portion 103 includes at least two connecting openings 40 (40a, 40b) that communicate the ventilation portion 102 and the odor retaining portion 101, and one connecting opening among the at least two connecting openings 40 (40a, 40b). and a partition section 41 disposed upstream of the section.
- the two connecting openings 40 are a first connecting opening 40a that releases air from the connecting part 103 to the odor retaining part 101, and a first connecting opening 40a that releases air containing odor components from the odor retaining part 101 to the connecting part 103. and a second connecting opening 40b.
- the air that has flowed into the connecting part 103 through the first ventilation part 102a is released into the odor retaining part 101 through the first connecting opening 40a, mixes with the odor component, and then the air containing the odor component is It flows into the connection part 103 through the second connection opening 40b and is discharged to the outside through the second ventilation part 102b.
- the partition part 41 is arranged upstream of the second connection opening 40b among the two connection openings 40 (40a, 40b). By having the partition part 41, the air that has flowed into the connecting part 103 is forcibly passed through the odor holding part 101, becomes odor-containing air, and then flows into the connecting part 103 again. Thereby, air containing odor components can be efficiently generated.
- the connecting part 103 may have an opening/closing mechanism in the connection area with the ventilation part 102.
- the opening/closing mechanism may be the same as that of the ventilation section 102, and may include, for example, an opening/closing mechanism including a sealing lid 1031, a shaft 1032, and a spring 1033.
- the discharge unit 104 has at least a nozzle structure capable of discharging odor component-containing air to the outside and changing the direction of the odor component-containing air.
- the form of the ejection part 104 is not particularly limited, and for example, it can be a cap that covers the outer layer member, but the present embodiment is not limited to this, and the outer layer member and the ejection part 104 are integrally formed. may have been done.
- the ventilation openings 30 (30a, 30b) have an opening/closing mechanism that includes a sealing lid 1021 (1021a, 1021b), a shaft 1022, and a spring 1023 (1023a, 1023b).
- the connecting portion 103 is also provided with an opening/closing mechanism including a sealing lid 1031, a shaft 1032, and a spring 1033.
- the pusher X When the pusher X is pressed, the pusher X pushes the first airtight lid 1021a toward the inside of the first ventilation section 102a, the inflow ventilation opening 30a opens, and air flows into the first ventilation section 102a. . At this time, the first spring 1023a is compressed by the first sealing lid 1021a.
- the shaft 1022 attached to the first airtight lid 1021a moves in the direction of the connection section 103.
- This shaft 1022 pushes the sealing lid 1031 toward the inside of the connecting portion 103, and the air in the first ventilation portion 102a flows into the connecting portion 103.
- the spring 1033 is compressed by the sealing lid 1031. Since the air flowing into the connecting part 103 has the partition part 41, it first flows into the odor retaining part 101 through the first connecting opening 40a, mixes with the odor components retained in the odor retaining part 101, and becomes odor. Component air is created. This odor-containing air flows into the connecting portion 103 again through the second connecting opening 40b.
- the shaft 1032 attached to the sealing lid 1031 moves toward the second ventilation portion 102b.
- This shaft 1032 pushes the second sealing lid 1021b inward into the second ventilation section 102b, and the odor-containing air from the connection section 103 flows into the second ventilation section 102b.
- the second spring 1023b is compressed by the second sealing lid 1021b.
- the odor component-containing air that has flowed into the second ventilation section 102b flows into the discharge section 104 from the discharge ventilation opening 30b. and is released to the outside.
- the first airtight lid 1021a is returned to its original position by the restoring force of the compressed first spring 1023a. Further, the sealing lid 1031 is returned to its original position by the restoring force of the spring 1033, and the second sealing lid 1021b is returned to its original position by the restoring force of the second spring 1023b.
- the sample generation unit 34 generates a sample containing a chemical substance based on the identification result of the identification system unit. Specifically, it may be the same as that described in "(6) Sample generation section 15" of the first embodiment, and as described below, the cartridge holding section 31, the front storage section 32, , and a back storage section 33.
- the cartridge holding part 31 is a part that holds one or more cartridges 10.
- the cartridge holding part 31 includes, for example, a holding part that holds one or more cartridges 10 and has a discharge hole 310 for discharging odor-containing air released from the cartridge 10, and a holding part that fits into the holding part and holds the cartridge 10. It consists of a holding part that holds the. Note that the number of cartridges 10 held by the cartridge holding section 31 is not particularly limited, and can be freely set according to the purpose of the odor identification system 3.
- the form of the indwelling part and the cartridge holding part 31 is not particularly limited, and can be freely designed according to the form of the cartridge 10 to be held. For example, it can be formed into a substantially rectangular parallelepiped shape, a substantially cylindrical shape, a substantially cubic shape, or the like.
- the material forming the indwelling part and the cartridge holding part 31 is not particularly limited as long as it can hold the cartridge 10, and examples thereof include the same materials as those listed as the material of the impregnating agent.
- the front storage section 32 has at least a discharge hole 320 that discharges odor-containing air to the outside.
- the discharge hole 320 may be provided in a part of the front storage section 32, and in this case, it may be able to communicate with the discharge hole 310 of the indwelling section.
- the front storage section 32 may include a guide section (not shown) that guides the odor-containing air near the user's nose.
- the material forming the guide part is not particularly limited, and for example, paper (including recycled paper), wood, bamboo skin, plastic, coal, etc., or one or more of these may be used in combination. can.
- part or all of the guide part may be formed to be detachable, and in this case, for example, it may be disposable for each user.
- the back storage section 33 has at least a drive mechanism section and a placement drive section.
- the drive mechanism section includes a drive mechanism housing section, and is connected to the operating shaft and the shaft 1022 in the cartridge 10 to drive them.
- the drive mechanism section includes, inside the drive mechanism housing section, a pusher connected to the operating shaft and a thin wire shape memory alloy SMA serving as a drive source for driving the pusher.
- the rear end of the pusher is fixed to a drive mechanism fixing part provided at the inner rear end of the drive mechanism accommodating part. Near the tip of the pusher is provided with an SMA sliding part that folds back and slides the shape memory alloy SMA.
- the entire drive mechanism section is fixed with a support attached below the drive mechanism accommodating section, and the rear end of the shape memory alloy SMA located inside the drive mechanism fixing section has wiring capable of supplying power. It is connected.
- the pusher is movable in the extending direction inside the drive mechanism accommodating portion by expanding and contracting the shape memory alloy SMA.
- the shape memory alloy SMA is folded back into a U-shape at the SMA sliding part provided near the tip of the pusher, passes through the inside of the pusher, and connects to the drive mechanism fixing part with both ends located at the rear end of the pusher.
- the actuator that is the driving source is not limited to the shape memory alloy SMA, but may be a linear motion mechanism that directly moves the pusher, such as a motor, solenoid, linear slide type, pneumatic (air pump type), small electromagnet, etc. Good to have.
- the linear motion mechanism includes not only a case in which one member moves in a linear direction, but also a case in which some members of a plurality of connected members move in a linear direction.
- the placement drive section places the specific cartridge 10 near the discharge hole 320 based on the identification result of the identification system section 14.
- the arrangement drive unit can be driven in accordance with the form of the cartridge holding unit 31, and can be driven, for example, in a linear drive, an XY axis drive, a rotational drive, or the like.
- the actuator serving as the drive source may be a conventionally known actuator, and is not particularly limited in this embodiment.
- the odor identification system 3 can be used, for example, to emit odor into a limited target space. Specifically, it is used for olfactory testing or olfactory training (including olfactory stimulation therapy) systems.
- olfactory training is interpreted in a broad sense, and may include practice such as the odor judge test, the sommelier test, and the aromatherapy test.
- the odor identification system 3 can also be used as a neurodegenerative disease prevention or treatment system.
- the odor identification system 3 can be used as an odor experience and measurement system. Specifically, it may be used, for example, for flavor simulation when developing food and drink products. It may also be installed in automobiles; head-mounted displays; relaxation products such as neck pillows, eye pillows, sofas, and beds. Furthermore, it may be used for bad breath checker, body odor checker, bad odor investigation, odor countermeasures, etc.
- the scent When installed in a car, for example, it may generate a smell based on instructions from the driver or passenger, and detect the position information of the car, the movement or biological signals of the driver or passenger, and detect the detection results.
- An odor may be generated based on the
- the scent When installed in a head-mounted display, for example, it may generate a smell in conjunction with the image presented on the display, or it may detect the user's movements or biological signals, and generate a smell based on the detection results. You can.
- the scent When installed in a relaxation product, the scent may be generated based on a user's instruction, or the scent may be generated based on the detection result by detecting the user's movements or biological signals.
- the odor identification system 3 can be used to emit odor into a wide, non-limiting target space. Specifically, it will be used in scent experience systems installed in vending machines, digital signage, robots, and other customer attraction products. When installed in a product that attracts customers, for example, the behavior and facial expressions of an unspecified number of users may be detected, and a scent may be generated based on the detection results.
- An electrochemical sensor circuit having: [2] The electrochemical sensor circuit according to [1], wherein at least some of the electrochemical sensor sections are arranged in an array. [3] The electrochemical sensor circuit according to [2], wherein at least a portion of the response signal output circuit is arranged in an array.
- the identification system unit identifies the chemical substance in the sample by referring to a database for the response signal of each electrochemical sensor unit.
- the identification system section includes: impedance calculation means for calculating impedance based on the output result of the response signal output circuit; quantification means for quantifying the chemical substance in the sample based on the result of the impedance calculation means; identification means for identifying a chemical substance in the sample based on the result of the quantitative means;
- the electrochemical sensor circuit according to any one of [1] to [7] further comprising a sample generation section that generates a sample containing a chemical substance based on the identification result of the identification system section.
- [14] further comprising a plurality of electrochemical sensor groups having at least two or more of the electrochemical sensor sections, The electrochemical sensor circuit according to any one of [1] to [12], which measures at different frequencies for each electrochemical sensor group.
- Electrochemical sensor circuit 11 AC signal generation section 12: Electrochemical sensor section 13: Response signal output circuit 14: Identification system section 15: Sample generation section 2: Electrochemical sensor circuit for odor component identification 3: Odor identification system 10 : Cartridge 101: Odor holding section 102: Venting section 103: Connecting section 104: Discharging section 31: Cartridge holding section 32: Front storage section 33: Back storage section 34: Sample generation section
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Abstract
Description
以下に説明する実施形態は、本技術の代表的な実施形態の一例を示したものであり、これにより本技術の範囲が狭く解釈されることはない。なお、説明は以下の順序で行う。
1.第1実施形態(電気化学センサ回路1)
(1)電気化学センサ回路1の基本構成
(2)AC信号生成部11
(3)電気化学センサ部12
(4)応答信号出力回路13
(5)識別システム部14
(6)試料発生部15
(7)電気化学センサ回路1の具体的構成
(7-1)回路構成例1
(7-2)回路構成例2
(7-3)回路構成例3
(7-4)回路構成例4
(7-5)回路構成例5
(7-6)回路構成例6
(7-7)回路構成例7
(7-8)回路構成例8
(7-9)回路構成例9
(7-10)回路構成例10
(7-11)回路構成例11
2.第2実施形態(匂い成分識別用電気化学センサ回路2)
3.第3実施形態(匂い識別システム3)
(1)匂い識別システム3の基本構成
(2)匂い成分識別用電気化学センサ回路2
(3)カートリッジ10
(3-1)匂い保持部101
(3-2)通気部102
(3-3)連結部103
(3-4)放出部104
(3-5)カートリッジ10の動作例
(4)試料発生部34
(4-1)カートリッジ保持部31
(4-2)前面収納部32
(4-3)背面収納部33
(5)匂い識別システム3の用途例
図18は、カートリッジ10の実施形態の一例を示す斜視図であり、図19は、図18に示した実施形態のカートリッジ10の断面図である。カートリッジ10は、図18に示すように、匂い成分を保持する匂い保持部101を少なくとも備える。また、必要に応じて、通気部102、連結部103、放出部104等を有していてもよい。
〔1〕
1つのAC信号生成部に対してそれぞれ接続される少なくとも2つ以上の電気化学センサ部と、
前記電気化学センサ部からの応答信号を出力する、少なくとも1つ以上の応答信号出力回路と、
前記応答信号出力回路からの出力に基づいて、試料中の化学物質を識別する識別システム部と、
を有する、電気化学センサ回路。
〔2〕
前記電気化学センサ部の少なくとも一部が、アレイ配置された、〔1〕に記載の電気化学センサ回路。
〔3〕
前記応答信号出力回路の少なくとも一部が、アレイ配置された、〔2〕に記載の電気化学センサ回路。
〔4〕
前記応答信号出力回路の少なくとも一部は、IQ変換回路及びAD変換回路を有する、〔1〕から〔3〕のいずれかに記載の電気化学センサ回路。
〔5〕
1つの前記応答信号出力回路に対して、少なくとも2つ以上の前記電気化学センサ部がそれぞれ接続される、〔1〕から〔4〕のいずれかに記載の電気化学センサ回路。
〔6〕
前記識別システム部は、電気化学センサ部毎の応答信号をデータベースと参照し、前記試料中の化学物質を識別する、〔1〕から〔5〕のいずれかに記載の電気化学センサ回路。
〔7〕
前記識別システム部は、
前記応答信号出力回路の出力結果に基づいて、インピーダンスを算出するインピーダンス算出手段と、
前記インピーダンス算出手段の結果に基づいて、前記試料中の化学物質を定量する定量手段と、
前記定量手段の結果に基づいて、前記試料中の化学物質を識別する識別手段と、
を有する、〔1〕から〔6〕のいずれかに記載の電気化学センサ回路。
〔8〕
前記識別システム部の識別結果に基づいて、化学物質を含む試料を発生する試料発生部を更に有する、〔1〕から〔7〕のいずれかに記載の電気化学センサ回路。
〔9〕
前記AC信号生成部の周波数は、可変的である、〔1〕から〔8〕のいずれかに記載の電気化学センサ回路。
〔10〕
前記識別システム部の識別結果に基づいて、前記AC信号生成部の周波数を制御する、〔1〕から〔9〕のいずれかに記載の電気化学センサ回路。
〔11〕
前記応答信号出力回路が2つ以上のスイッチを有し、
前記電気化学センサ部に合わせて、各スイッチと前記AC信号生成部の周波数を制御する、〔9〕に記載の電気化学センサ回路。
〔12〕
行又は列毎に異なる周波数の前記AC信号生成部をそれぞれ有する、〔2〕又は〔3〕に記載の電気化学センサ回路。
〔13〕
同種の電気化学センサ部を2つ以上配置し、
2つ以上の前記同種の電気化学センサ部を異なる周波数で測定する、〔12〕に記載の電気化学センサ回路。
〔14〕
少なくとも2つ以上の前記電気化学センサ部を有する複数の電気化学センサ群を更に有し、
電気化学センサ群毎に異なる周波数で測定する、〔1〕~〔12〕のいずれかに記載の電気化学センサ回路。
〔15〕
前記試料は、気体、液体、半固体、及び固体のいずれかの状態である、〔1〕から〔14〕のいずれかに記載の電気化学センサ回路。
〔16〕
1つのAC信号生成部に対してそれぞれ接続される少なくとも2つ以上の電気化学センサ部と、
前記電気化学センサ部からの応答信号を出力する、少なくとも1つ以上の応答信号出力回路と、
前記応答信号出力回路からの出力に基づいて、試料中の匂い成分を識別する識別システム部と、
を有する、匂い成分識別用電気化学センサ回路。
〔17〕
1つのAC信号生成部に対してそれぞれ接続される少なくとも2つ以上の電気化学センサ部と、前記電気化学センサ部からの応答信号を出力する、少なくとも1つ以上の応答信号出力回路と、前記応答信号出力回路からの出力に基づいて、試料中の匂い成分を識別する識別システム部と、を有する、匂い成分識別用電気化学センサ回路と、
匂い成分を保持する匂い保持部を備えるカートリッジと、
からなる匂い識別システム。
〔18〕
前記識別システム部の識別結果に基づいて、化学物質を含む試料を発生する試料発生部を更に有する、〔17〕に記載の匂い識別システム。
〔19〕
嗅覚検査又は嗅覚トレーニングシステム、神経変性疾患予防又は治療システム、及び匂い体験又は測定システムからなる群より選択されるいずれか1種以上のシステムに用いられる、〔17〕又は〔18〕に記載の匂い識別システム。
11:AC信号生成部
12:電気化学センサ部
13:応答信号出力回路
14:識別システム部
15:試料発生部
2:匂い成分識別用電気化学センサ回路
3:匂い識別システム
10:カートリッジ
101:匂い保持部
102:通気部
103:連結部
104:放出部
31:カートリッジ保持部
32:前面収納部
33:背面収納部
34:試料発生部
Claims (19)
- 1つのAC信号生成部に対してそれぞれ接続される少なくとも2つ以上の電気化学センサ部と、
前記電気化学センサ部からの応答信号を出力する、少なくとも1つ以上の応答信号出力回路と、
前記応答信号出力回路からの出力に基づいて、試料中の化学物質を識別する識別システム部と、
を有する、電気化学センサ回路。 - 前記電気化学センサ部の少なくとも一部が、アレイ配置された、請求項1に記載の電気化学センサ回路。
- 前記応答信号出力回路の少なくとも一部が、アレイ配置された、請求項2に記載の電気化学センサ回路。
- 前記応答信号出力回路の少なくとも一部は、IQ変換回路及びAD変換回路を有する、請求項1に記載の電気化学センサ回路。
- 1つの前記応答信号出力回路に対して、少なくとも2つ以上の前記電気化学センサ部がそれぞれ接続される、請求項1に記載の電気化学センサ回路。
- 前記識別システム部は、電気化学センサ部毎の応答信号をデータベースと参照し、前記試料中の化学物質を識別する、請求項1に記載の電気化学センサ回路。
- 前記識別システム部は、
前記応答信号出力回路の出力結果に基づいて、インピーダンスを算出するインピーダンス算出手段と、
前記インピーダンス算出手段の結果に基づいて、前記試料中の化学物質を定量する定量手段と、
前記定量手段の結果に基づいて、前記試料中の化学物質を識別する識別手段と、
を有する、請求項1に記載の電気化学センサ回路。 - 前記識別システム部の識別結果に基づいて、化学物質を含む試料を発生する試料発生部を更に有する、請求項1に記載の電気化学センサ回路。
- 前記AC信号生成部の周波数は、可変的である、請求項1に記載の電気化学センサ回路。
- 前記識別システム部の識別結果に基づいて、前記AC信号生成部の周波数を制御する、請求項1に記載の電気化学センサ回路。
- 前記応答信号出力回路が2つ以上のスイッチを有し、
前記電気化学センサ部に合わせて、各スイッチと前記AC信号生成部の周波数を制御する、請求項9に記載の電気化学センサ回路。 - 行又は列毎に異なる周波数の前記AC信号生成部をそれぞれ有する、請求項2に記載の電気化学センサ回路。
- 同種の電気化学センサ部を2つ以上配置し、
2つ以上の前記同種の電気化学センサ部を異なる周波数で測定する、請求項12に記載の電気化学センサ回路。 - 少なくとも2つ以上の前記電気化学センサ部を有する複数の電気化学センサ群を更に有し、
電気化学センサ群毎に異なる周波数で測定する、請求項1に記載の電気化学センサ回路。 - 前記試料は、気体、液体、半固体、及び固体のいずれかの状態である、請求項1に記載の電気化学センサ回路。
- 1つのAC信号生成部に対してそれぞれ接続される少なくとも2つ以上の電気化学センサ部と、
前記電気化学センサ部からの応答信号を出力する、少なくとも1つ以上の応答信号出力回路と、
前記応答信号出力回路からの出力に基づいて、試料中の匂い成分を識別する識別システム部と、
を有する、匂い成分識別用電気化学センサ回路。 - 1つのAC信号生成部に対してそれぞれ接続される少なくとも2つ以上の電気化学センサ部と、前記電気化学センサ部からの応答信号を出力する、少なくとも1つ以上の応答信号出力回路と、前記応答信号出力回路からの出力に基づいて、試料中の匂い成分を識別する識別システム部と、を有する、匂い成分識別用電気化学センサ回路と、
匂い成分を保持する匂い保持部を備えるカートリッジと、
からなる匂い識別システム。 - 前記識別システム部の識別結果に基づいて、化学物質を含む試料を発生する試料発生部を更に有する、請求項17に記載の匂い識別システム。
- 嗅覚検査又は嗅覚トレーニングシステム、神経変性疾患予防又は治療システム、及び匂い体験又は測定システムからなる群より選択されるいずれか1種以上のシステムに用いられる、請求項17に記載の匂い識別システム。
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|---|---|---|---|
| CN202380041515.3A CN119234146A (zh) | 2022-07-12 | 2023-06-08 | 电化学传感器电路、气味成分识别用电化学传感器电路和气味识别系统 |
| US18/878,883 US20250389691A1 (en) | 2022-07-12 | 2023-06-08 | Electrochemical sensor circuit, electrochemical sensor circuit for odor component identification, and odor identification system |
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| PCT/JP2023/021391 Ceased WO2024014200A1 (ja) | 2022-07-12 | 2023-06-08 | 電気化学センサ回路、匂い成分識別用電気化学センサ回路、及び匂い識別システム |
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| Country | Link |
|---|---|
| US (1) | US20250389691A1 (ja) |
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| WO (1) | WO2024014200A1 (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006017486A (ja) * | 2004-06-30 | 2006-01-19 | Hitachi Ltd | 核磁気共鳴を用いるスペクトル分析方法および核磁気共鳴装置 |
| WO2020065982A1 (ja) * | 2018-09-28 | 2020-04-02 | 日本電気株式会社 | 測定装置、および測定方法 |
| JP2022062087A (ja) * | 2016-03-30 | 2022-04-19 | カリード,ワカス | 電気化学検出、容量検出、および電界放出検出のためのナノ構造アレイベースのセンサ |
| US20220128499A1 (en) * | 2020-10-27 | 2022-04-28 | Wolfgang Richter | System for interacting with polyisoprene based products to enhance sensing features |
-
2023
- 2023-06-08 WO PCT/JP2023/021391 patent/WO2024014200A1/ja not_active Ceased
- 2023-06-08 CN CN202380041515.3A patent/CN119234146A/zh not_active Withdrawn
- 2023-06-08 US US18/878,883 patent/US20250389691A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006017486A (ja) * | 2004-06-30 | 2006-01-19 | Hitachi Ltd | 核磁気共鳴を用いるスペクトル分析方法および核磁気共鳴装置 |
| JP2022062087A (ja) * | 2016-03-30 | 2022-04-19 | カリード,ワカス | 電気化学検出、容量検出、および電界放出検出のためのナノ構造アレイベースのセンサ |
| WO2020065982A1 (ja) * | 2018-09-28 | 2020-04-02 | 日本電気株式会社 | 測定装置、および測定方法 |
| US20220128499A1 (en) * | 2020-10-27 | 2022-04-28 | Wolfgang Richter | System for interacting with polyisoprene based products to enhance sensing features |
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| CN119234146A (zh) | 2024-12-31 |
| US20250389691A1 (en) | 2025-12-25 |
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