JP7364475B2 - Gas detection device and gas detection method - Google Patents

Description

The present disclosure relates to a gas detection device and a gas detection method.

BACKGROUND ART Conventionally, a system is known that detects gas generated from the stool of a subject in order to notify the intestinal condition of the subject (for example, Patent Document 1 below).

JP2007-089857A

For example, when a system as described above is installed in a toilet bowl, it is possible to detect exhaust gas from feces expelled by a subject. Subjects will be able to manage their health on a daily basis without undergoing tests. However, there is a need for further improvement in detection accuracy.

In view of the above, an object of the present disclosure is to provide a gas detection device and a gas detection method that can accurately detect gas discharged from the body of a subject.

A gas detection device according to an embodiment of the present disclosure includes a sensor unit capable of detecting a first component of a first exhaust gas of a subject contained in a sample gas and outputting first detection data; a communication unit that communicates with a capsule detector capable of detecting a second component of a second exhaust gas generated in the body of the subject and acquires second detection data from the capsule detector; and a control unit that generates analysis data based on the detection data of and the second detection data, and outputs the analysis data.

A gas detection method according to an embodiment of the present disclosure includes detecting a first component contained in a sample gas to generate first detection data, and detecting a second component of a gas generated in the body of a subject. obtaining second detection data from a capsule detector capable of detecting a component of the component; generating analysis data based on the first detection data and the second detection data; and outputting the analysis data. and include.

According to an embodiment of the present disclosure, a gas detection device and a gas detection method that can accurately detect exhaust gas from a subject can be provided.

FIG. 1 is an external view of a gas detection device according to an embodiment of the present disclosure. FIG. 2 is a diagram showing an example of the internal configuration of a casing included in the gas detection device. FIG. 3 is a functional block diagram of the gas detection device. FIG. 4 is a circuit diagram of the sensor section. FIG. 5 is a functional block diagram of the capsule detector. FIG. 6 is a diagram illustrating a database stored in the storage unit. FIG. 7 is a diagram illustrating a display example of exhaust gas analysis data in an electronic device. FIG. 8 is an example of a flowchart of a gas detection method executed by the gas detection device.

Embodiments according to the present disclosure will be described below with reference to the drawings. Each figure is shown schematically. The dimensional ratios, etc. on the drawings do not necessarily match the reality.

[Configuration example of gas detection device]
The gas detection device 1 shown in FIG. 1 can detect a sample of a subject and gas (exhaust gas) generated from the body. The detected gas can be used for analyzing the health condition of the subject. Here, the subject's specimen may be, for example, a part of the subject's tissue or urine, but in this embodiment, it is the subject's stool. The gas generated from the specimen of the subject is exhaust gas (first exhaust gas). This exhaust gas is generated mainly from the stool in the intestine and the stool excreted from the body. Further, a gas detection system may be configured by the gas detection device 1 and a capsule detector 100 that can detect gas (second exhaust gas) mainly generated from the body such as the stomach and intestines, which will be described later.

The gas detection device 1 is installed, for example, in a flush toilet bowl 2, as shown in FIG. The toilet bowl 2 includes a toilet bowl 2A and a toilet seat 2B. The gas detection device 1 may be installed at any location on the toilet bowl 2. As an example, the gas detection device 1 may be arranged from between the toilet bowl 2A and the toilet seat 2B to the outside of the toilet bowl 2, as shown in FIG. A part of the gas detection device 1 may be embedded in the toilet seat 2B. The subject's feces can be discharged into the toilet bowl 2A of the toilet 2. The gas detection device 1 can obtain a sample gas in which gas generated from feces discharged into the toilet bowl 2A is mixed with outside air. The gas detection device 1 can detect specific gas components contained in a sample gas. The gas detection device 1 can acquire detection data of gas detected in the body of the subject by the capsule detector 100. The gas detection device 1 can transmit detection results to the electronic device 3. Further, the casing 10, the suction hole 20, and the discharge path 22 will be described later.

The toilet bowl 2 may be installed in a toilet room of a house, a hospital, or the like. Further, the electronic device 3 is, for example, a smartphone used by the subject. However, the electronic device 3 is not limited to a smartphone, and may be any electronic device. The electronic device 3 may be located inside the toilet room or outside the toilet room.

The electronic device 3 can receive the detection result from the gas detection device 1 via wireless communication or wired communication. The electronic device 3 can display the received detection result on the display section 3A. The display unit 3A may include a display capable of displaying characters and the like, and a touch screen capable of detecting contact with a user's (subject's) finger or the like. The display may include a display device such as a liquid crystal display (LCD), an organic EL display (OELD), or an inorganic electro-luminescence display (IELD). . The detection method of the touch screen may be any method such as a capacitance method, a resistive film method, a surface acoustic wave method (or an ultrasonic method), an infrared method, an electromagnetic induction method, or a load detection method.

The capsule detector 100 is a device that can detect gas generated within the body of a subject, specifically, in the stomach and intestines. The capsule type detector 100 can be said to be a gas detection device small enough to be swallowed by a subject. After being swallowed from the subject's mouth, the capsule-type detector 100 moves inside organs such as the esophagus, stomach, small intestine, and large intestine according to its peristaltic movement until it is naturally expelled from the subject. do. In this embodiment, when the capsule detector 100 is expelled from the subject along with stool, the capsule detector 100 communicates with the gas detection device 1 and outputs the stored detection data to the gas detection device 1. As another example, the capsule detector 100 may be able to output detection data to the gas detection device 1 when it is inside the body of the subject. Details of the capsule detector 100 will be described later.

As shown in FIG. 2, the gas detection device 1 includes a housing 10, a suction hole 20, a discharge path 22, a flow path 23, a valve 25, a chamber 30, a supply section 50, and a control section 64. Equipped with The flow path 23 includes a flow path 23-1, a flow path 23-2, and a flow path 23-3. Further, as shown in FIG. 3, the gas detection device 1 includes a sensor section 31, a storage section 61, a communication section 62, and a sensor section 63. The sensor section 31 is a sensor that is included in the chamber 30 and detects and analyzes exhaust gas, as will be described later. The sensor section 63 is another sensor. Furthermore, the gas detection device 1 may include a battery, a speaker, and the like.

The housing 10 houses various parts of the gas detection device 1. Housing 10 may be constructed of any material. For example, the housing 10 may be made of a material such as metal or resin.

The suction hole 20 can be exposed to the inside of the toilet bowl 2A, as shown in FIG. A portion of the suction hole 20 may be embedded in the toilet seat 2B. The suction hole 20 sucks a sample gas in which gas generated from feces discharged into the toilet bowl 2A is mixed with outside air. The sample gas sucked by the suction hole 20 passes through the channel 23-1 and reaches the inlet of the supply section 50. As shown in FIG. 1, one end of the suction hole 20 may be directed toward the interior of the toilet bowl 2A. As shown in FIG. 2, the other end of the suction hole 20 may be connected to the supply section 50. The suction hole 20 may be formed of a tubular member such as a resin tube or a metal or glass pipe.

Here, a blower may be provided outside the suction hole 20. The blower may include a fan and a motor. The blower is controlled by a controller 64. When the motor is driven and the fan rotates, sample gas is drawn into the vicinity of the suction hole 20.

A portion of the discharge passage 22 may be exposed to the outside of the toilet bowl 2A, as shown in FIG. The exhaust path 22 exhausts the exhaust gas from the chamber 30 or the sample gas that is not taken into the chamber 30 to the outside. The discharge path 22 may be formed of a tubular member such as a resin tube or metal or glass piping.

One end of the flow path 23-1 is connected to the suction hole 20. The other end of the flow path 23-1 is connected to the inlet of the supply section 50. One end of the flow path 23-2 is connected to the outlet of the supply section 50. The other end of the flow path 23-2 is connected to the valve 25. One end of the flow path 23-3 is connected to the valve 25. The other end of the channel 23-3 is connected to the chamber 30. The flow path 23 may be constituted by a tubular member such as a resin tube or metal or glass piping.

The valve 25 is located between the flow path 23-2, the flow path 23-3, and the discharge path 22. The valve 25 includes a connection port connected to the flow path 23-2, a connection port connected to the flow path 23-3, and a connection port connected to the discharge path 22. The valve 25 may be an electromagnetically driven, piezo-driven, or motor-driven valve.

By controlling the valve 25 by the control unit 64, the connection state between the flow path 23-2, the flow path 23-3, and the discharge path 22 is switched. For example, the control unit 64 switches the connection state between them to a state where the flow path 23-2 and the flow path 23-3 are connected, or a state where the flow path 23-2 and the discharge path 22 are connected. .

Chamber 30 stores sample gas for exhaust gas analysis. The chamber 30 has a sensor section 31 therein. The chamber 30 may include a plurality of sensor sections 31. The sensor sections 31-1, 31-2, and 31-3 are part of the plurality of sensor sections 31. The chamber 30 may be divided into a plurality of parts. Each sensor section 31 may be arranged in each chamber 30 divided into a plurality of parts. Each of the plurality of chambers 30 may be connected to each other. Chamber 30 is connected to flow path 23-3. A sample gas is supplied to the chamber 30 from the flow path 23-3. Further, the chamber 30 is connected to the discharge path 22 . The exhaust gas from chamber 30 containing the sample gas after the detection process is exhausted through exhaust passage 22 .

The sensor section 31 is arranged within the chamber 30. The sensor unit 31 can detect a specific component of exhaust gas and output its distribution as detection data. In this embodiment, each of the sensor sections 31 detects one component, that is, one type of gas, and outputs a voltage according to the detected amount to the control section 64. As another example, each of the sensor sections 31 may convert the detected amount into a concentration and output a voltage corresponding to the concentration to the control section 64. In this embodiment, the specific component that can be detected by the sensor unit 31 is referred to as a "first component." For example, the first component includes methane, carbon dioxide, hydrogen sulfide, ammonia, and the like. The distribution of the first component, which is the detection result output by the sensor unit 31, is referred to as "first detection data." For example, the first detection data is given as a set of voltage values output by each of the sensor sections 31 according to the detection amount. The control unit 64 is capable of analyzing the abundance ratio of the first component in the first exhaust gas, etc., based on the first detection data. Here, the sample gas supplied to the chamber 30 contains components other than the first component. Examples of components other than the first component include hydrogen, methyl mercaptan, trimethylamine acetate, and water.

As shown in FIG. 4, the sensor section 31 includes a sensor element 31S and a resistance element 31R. The sensor element 31S and the resistance element 31R are connected in series between the power supply terminal P1 and the ground terminal P2. A constant voltage value V _C is applied between the power supply terminal P1 and the ground terminal P2. The same current value _IS flows through each of the sensor element 31S and the resistance element 31R. The current value _IS can be determined according to the resistance value R _S of the sensor element 31S and the resistance value R _L of the resistance element 31R. The voltage output by the sensor section 31 may be a voltage value _VS applied to the sensor element 31S, or may be a voltage value _VRL applied to the resistance element 31R.

The power terminal P1 shown in FIG. 4 is connected to a power source such as a battery included in the gas detection device 1. The ground terminal P2 is connected to the ground of the gas detection device 1.

One end of the sensor element 31S shown in FIG. 4 is connected to the power supply terminal P1. The other end of the sensor element 31S is connected to one end of the resistance element 31R. The sensor element 31S is a semiconductor sensor. However, the sensor element 31S is not limited to a semiconductor type sensor. For example, the sensor element 31S may be a catalytic combustion sensor, a solid electrolyte sensor, or the like.

The sensor element 31S includes a gas sensing section. The gas sensing section includes a metal oxide semiconductor material depending on the type of sensor section 31. Examples of metal oxide semiconductor materials include silicon oxide ( _SnO2, etc.), indium oxide ( _{In2O3 ,} etc.), zinc oxide (ZnO, etc.), tungsten oxide ( _WO3, etc.), and iron oxide ( _Fe2O3 , _etc. ). ) and the like. By appropriately adding impurities to the metal oxide semiconductor material of the gas sensing portion, the gas to be detected by the sensor element 31S can be appropriately selected. The sensor element 31S may further include a heater that heats the gas sensing section.

When the sensor element 31S is exposed to the sample gas, the exhaust gas contained in the sample gas is replaced with oxygen adsorbed on the surface of the gas sensing portion of the sensor element 31S, and a reduction reaction may occur. By the reduction reaction occurring, oxygen adsorbed on the surface of the gas sensing part can be removed. When the oxygen adsorbed on the surface of the gas sensing portion is removed, the resistance value R _S of the sensor element 31S decreases, and the voltage value V _S applied to the sensor element 31S may decrease. That is, when the sample gas is supplied to the sensor section 31, the voltage value V _S applied to the sensor element 31S may decrease depending on the amount of the component to be detected. Here, the sum of the voltage value V _S and the voltage value V _RL is constant. Therefore, when the sample gas is supplied to the sensor section 31, the voltage value _VRL can increase depending on the amount of the component to be detected contained in the sample gas.

The resistance element 31R is a variable resistance element. The resistance value _RL of the resistance element 31R can be changed by a control signal from the control section 64. One end of the resistance element 31R is connected to the other end of the sensor element 31S. The other end of the resistance element 31R is connected to the ground terminal P2.

By adjusting the resistance value R _L of the resistance element 31R, the voltage value V _S applied to the sensor element 31S can be adjusted. For example, when the resistance value R _L is made equal to the resistance value R _S of the sensor element 31S, the amplitude of the voltage value V _S applied to the sensor element 31S can be close to the maximum value.

The supply section 50 is provided between the flow path 23-1 and the flow path 23-2. Supply unit 50 may supply sample gas to chamber 30 . The arrow on the supply section 50 in FIG. 2 indicates the direction in which the supply section 50 sends the sample gas. The supply section 50 is driven or stopped under the control of the control section 64. Further, the supply unit 50 may be a pump whose air supply rate can be adjusted by adjusting the opening degree of a valve. The supply unit 50 may be configured with a piezo pump, a motor pump, or the like. As another example, the supply unit 50 may be a blower whose air speed can be adjusted depending on the rotation speed of the fan.

The storage unit 61 is composed of, for example, a semiconductor memory or a magnetic memory. The storage unit 61 stores various information and programs for operating the gas detection device 1. The storage unit 61 may function as a work memory. Furthermore, the storage unit 61 may store, for example, multiple regression analysis algorithms and prediction formulas for performing detailed analysis of exhaust gas.

The communication unit 62 communicates with the electronic device 3, which shows the exhaust gas analysis data produced by the control unit 64 to the subject, for example, by displaying it on the display unit 3A or by voice. The communication unit 62 communicates with the capsule detector 100 in order to obtain detection data of gas detected by the capsule detector 100 in the body of the subject. The communication unit 62 may be able to communicate with an external server. The communication method used for communication between the communication unit 62, the electronic device 3, the capsule detector 100, and the external server may be a short-range wireless communication standard or a wireless communication standard for connecting to a mobile phone network, or a wired communication standard. It may be. Near field communication standards may include, for example, WiFi (registered trademark), Bluetooth (registered trademark), infrared rays, NFC (Near Field Communication), and the like. The wireless communication standard for connecting to the mobile phone network may include, for example, LTE (Long Term Evolution) or a fourth generation or higher generation mobile communication system. Further, the communication method used in communication between the communication unit 62, the electronic device 3, and the external server may be, for example, a communication standard such as LPWA (Low Power Wide Area) or LPWAN (Low Power Wide Area Network).

The sensor section 63 may include at least one of an image camera, a personal identification switch, an infrared sensor, a pressure sensor, and the like. The sensor section 63 outputs the detection result to the control section 64.

For example, when the sensor unit 63 includes an infrared sensor, it detects that the subject has entered the toilet room by detecting the reflected light from the object of the infrared rays irradiated by the infrared sensor. It is possible. The sensor unit 63 outputs a signal indicating that the subject has entered the toilet room to the control unit 64 as a detection result.

For example, when the sensor unit 63 includes a pressure sensor, it can detect that the subject has sat on the toilet seat 2B by detecting the pressure applied to the toilet seat 2B shown in FIG. The sensor unit 63 outputs a signal indicating that the subject is sitting on the toilet seat 2B to the control unit 64 as a detection result.

For example, when the sensor unit 63 includes a pressure sensor, it can detect that the subject has stood up from the toilet seat 2B by detecting a reduction in the pressure applied to the toilet seat 2B shown in FIG. . The sensor unit 63 outputs a signal indicating that the subject has stood up from the toilet seat 2B to the control unit 64 as a detection result.

For example, when the sensor unit 63 includes an image camera, a personal identification switch, etc., it collects data such as a facial image, sitting height, and body weight. The sensor unit 63 specifically identifies and detects individuals from the collected data. The sensor unit 63 outputs a signal indicating the specifically identified individual to the control unit 64 as a detection result.

For example, if the sensor unit 63 includes a personal identification switch or the like, it identifies (detects) the individual based on the operation of the personal identification switch. In this case, personal information may be registered (stored) in the storage unit 61 in advance. The sensor unit 63 outputs a signal indicating the identified individual to the control unit 64 as a detection result.

Control unit 64 includes one or more processors. The processor may include at least one of a general-purpose processor that loads a specific program and executes a specific function, and a dedicated processor specialized for specific processing. A dedicated processor may include an Application Specific Integrated Circuit (ASIC). The processor may include a programmable logic device (PLD). The PLD may include an FPGA (Field-Programmable Gate Array). The control unit 64 may include at least one of an SoC (System-on-a-chip) and an SiP (System In a Package) in which one or more processors cooperate. The control unit 64 may perform, for example, correction and calibration, which will be described later, according to the program.

[Capsule type detector]
FIG. 5 is a functional block diagram of the capsule detector 100. The capsule detector 100 includes a storage section 161, a communication section 162, a sensor section 163, and a control section 164. The sensor section 163 includes a gas sensor 163a, a temperature sensor 163b, and a pH sensor 163c.

The storage unit 161 is composed of, for example, a semiconductor memory. The storage unit 161 stores various information and programs for operating the capsule detector 100. The storage unit 161 may function as a work memory. The storage unit 161 stores gas detection data and biological information detected in the body of the subject by the sensor unit 163.

The communication unit 162 communicates with the gas detection device 1 in order to output the gas detection data and biological information stored in the storage unit 161. Any of the communication standards exemplified above may be used so as to be able to communicate with the communication unit 62 of the gas detection device 1.

The gas sensor 163a can detect a specific component of exhaust gas generated within the body of the subject and output its distribution as detection data. In this embodiment, each sensor included in the gas sensor 163a detects one component, that is, one type of gas, and outputs a voltage according to the detected amount to the control unit 164. As another example, each sensor of the gas sensor 163a may convert the detected amount into a concentration and output a voltage corresponding to the concentration to the control unit 164. In this embodiment, the specific component that can be detected by the gas sensor 163a is referred to as a "second component." For example, the second component is hydrogen, methane, carbon dioxide, etc., as examples. The distribution of the second component, which is the detection result output by the gas sensor 163a, is referred to as "second detection data." For example, the second detection data is given as a set of voltage values output by each sensor of the gas sensor 163a according to the detection amount. Here, each sensor included in the gas sensor 163a may be a semiconductor type sensor or a thermal conductive type sensor each having a size of about several mm.

The temperature sensor 163b can measure the temperature inside the subject's body and output the temperature information. The temperature sensor 163b can measure, for example, the internal temperature of the subject's stomach or intestines. Here, the temperature sensor 163b may be a semiconductor temperature sensor with a size of about several mm.

The pH sensor 163c can measure the pH in the subject's body and output the pH information. The pH sensor 163c can, for example, measure the pH of the secretions of the stomach and intestines of the subject. The above-mentioned internal temperature information and pH information are specific examples of the subject's biological information.

Control unit 164 includes one or more processors. The processor may include at least one of a general-purpose processor that loads a specific program and executes a specific function, and a dedicated processor specialized for specific processing. A dedicated processor may include an Application Specific Integrated Circuit (ASIC). The processor may include a programmable logic device (PLD). The PLD may include an FPGA (Field-Programmable Gate Array). The control unit 164 may include at least one of an SoC (System-on-a-Chip) and an SiP (System-in-a-Package) in which one or more processors cooperate. The control unit 164 may operate the sensor unit 163, for example, according to a program to generate the second detection data and biological information.

[Improvement of detection accuracy]
Here, in order to correctly analyze the exhaust gas of the subject, it is preferable that many components contained in the exhaust gas be detected. However, the exhaust gas contains, for example, components that are easily released. For example, hydrogen easily emanates from the toilet bowl 2A to the outside. Therefore, it may be difficult to accurately detect hydrogen with the sensor section 31 included in the gas detection device 1. Here, since the capsule type detector 100 is small, the types of components that can be detected are limited, but even components that are easily released can be accurately detected in the intestine. As described below, the gas detection device 1 according to the present embodiment accurately detects exhaust gas based on the first detection data from the sensor section 31 and the second detection data from the capsule detector 100. Can generate analytical data. The gas detection device 1 can generate more detailed exhaust gas analysis data using the biological information from the capsule detector 100. Further, the gas detection device 1 can generate more accurate exhaust gas analysis data using the distribution of intestinal bacteria in the stool of the subject.

FIG. 6 is a diagram illustrating a database 610 stored in the storage unit 61. The database 610 includes first detection data 611, second detection data 612, intestinal bacteria distribution 613, and biological information 614.

The first detection data 611 is the distribution of the first component output from the sensor unit 31 disposed within the chamber 30. When a detection result is output from the sensor unit 31, the control unit 64 causes the storage unit 61 to store the detection result as first detection data 611. In the example of FIG. 6, the first components that can be detected by the sensor unit 31 are methane (CH ₄ ), carbon dioxide (CO ₂ ), hydrogen sulfide (H ₂ S), and ammonia (NH ₃ ). Hydrogen (H ₂ ), which is a component that easily diverges, is not included in the first component.

The second detection data 612 is the distribution of the second component output from the gas sensor 163a of the capsule detector 100, which is acquired by the communication unit 62. When the communication unit 62 acquires a detection result from the capsule detector 100, the control unit 64 causes the storage unit 61 to store the detection result as second detection data 612. In the example of FIG. 6, the second components that can be detected by the gas sensor 163a of the capsule detector 100 are hydrogen, methane, and carbon dioxide. Hydrogen sulfide and ammonia are not included in the second component.

The intestinal bacteria distribution 613 is information representing the abundance ratio of intestinal bacteria in the stool of the subject. In the example of FIG. 6, the intestinal bacteria distribution 613 is associated with hydrogen, methane, carbon dioxide, hydrogen sulfide, and ammonia, which are gas components generated by intestinal bacteria. The control unit 64 may acquire the results of the stool test at the testing institution via the communication unit 62 and store them in the storage unit 61 as the intestinal bacteria distribution 613. As another example, when the capsule type detector 100 includes a microbial sensor, the capsule type detector 100 may detect intestinal bacteria instead of a testing institution. The control unit 164 of the capsule detector 100 may temporarily store the detection results of the microbial sensor in the storage unit 161. When the communication unit 62 acquires the detection result of the microorganism sensor from the capsule detector 100, the control unit 64 may cause the storage unit 61 to store the detection result as the intestinal bacteria distribution 613. At this time, the control unit 64 may cause the storage unit 61 to store the detection result of the microbial sensor as additional data to the second detection data 612 instead of the intestinal bacteria distribution 613.

The biological information 614 is physiological information detected within the body of the subject. The communication unit 62 further acquires biological information 614 detected by the capsule detector 100 inside the subject's body. In this embodiment, the biological information 614 includes internal temperature information and pH information. When the control unit 64 acquires the measurement results of the temperature sensor 163b and the pH sensor 163c via the communication unit 62, the control unit 64 causes the storage unit 61 to store the detection results as biological information 614.

As mentioned above, the second component includes non-common components that are not included in the first component. In the example of FIG. 6, the uncommon component is hydrogen. The control unit 64 may add second detection data 612 regarding non-common components to the first detection data 611 to generate exhaust gas analysis data. In other words, this analysis data includes first detection data 611 and second detection data 612 regarding non-common components, and a component (for example, hydrogen) that was not present in the first detection data 611 is added. Since more components are detected, the accuracy of exhaust gas detection increases.

The control unit 64 may include biological information 614 in the analysis data. For example, by adding information such as internal temperature information related to the activity of intestinal bacteria as biological information 614, more detailed exhaust gas analysis data is provided.

As mentioned above, the second component includes common components contained in the first component. In the example of Figure 6, the common components are methane and carbon dioxide. When generating the analysis data, the control unit 64 may correct the first detection data 611 using the second detection data 612 regarding the common component. The correction may be, for example, replacing with the second detection data 612. The correction may be, for example, using the second detection data 612 to perform statistical calculations such as an average. Since the second detection data 612 is detected inside the body of the subject, it is considered to have higher accuracy. Therefore, by correcting the first detection data 611 using the second detection data 612 regarding the common component, it is possible to further improve the detection accuracy.

Here, the control unit 64 may calibrate the sensitivity of the sensor unit 31 using the second detection data 612 regarding the common component. The sensitivity of the sensor section 31 may change due to aging. The control unit 64 may use second detection data that is considered to be more accurate to perform calibration periodically or when conditions are met. Periodically may be, for example, every week. The condition may be, for example, that the gas detection device 1 has not been used for several days. The control unit 64 can maintain a state of high detection accuracy by calibrating the sensitivity of the sensor unit 31.

The control unit 64 may further correct the analysis data generated based on the first detection data 611 and the second detection data 612 based on the intestinal bacteria distribution 613. The control unit 64 may adjust the numerical value of the generated analysis data, for example, based on the component ratio of the intestinal bacteria distribution 613. By correction using the intestinal bacteria distribution 613, it is possible to generate more accurate exhaust gas analysis data. Further, the control unit 64 may further calibrate the sensitivity of the sensor unit 31 based on the distribution 613 of intestinal bacteria.

FIG. 7 is a diagram showing a display example of analysis data of exhaust gas in the electronic device 3. As shown in FIG. As described above, the control unit 64 uses the database 610 of the storage unit 61 to generate exhaust gas analysis data with high detection accuracy. The control unit 64 outputs the generated analysis data to the electronic device 3. The electronic device 3 displays the analysis data on the display section 3A. In the example of FIG. 7, the component distribution of exhaust gas is shown as gas analysis data. The gas analysis data also includes information on hydrogen detected by the capsule detector 100. Further, as shown in FIG. 7, the analysis data may include information on the internal body temperature detected by the capsule detector 100, for example, the intestinal temperature. By grasping the detailed and highly accurate exhaust gas information displayed on the display section 3A, the subject can manage his or her health on a daily basis.

FIG. 8 is an example of a flowchart of a gas detection method executed by the gas detection device 1.

The gas detection device 1 detects the first component of the subject's exhaust gas contained in the sample gas and generates first detection data 611 (step S1).

The gas detection device 1 acquires second detection data 612 from the capsule detector 100 that detects the second component of exhaust gas within the body of the subject (step S2).

The gas detection device 1 generates exhaust gas analysis data based on the first detection data 611 and the second detection data 612 (step S3).

The gas detection device 1 outputs analysis data (step S4).

As described above, the gas detection device 1 according to the present embodiment can accurately detect the exhaust gas of the subject with the above-described configuration.

Although embodiments according to the present disclosure have been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various changes or modifications based on the present disclosure. It should therefore be noted that these variations or modifications are included within the scope of this disclosure. For example, functions included in each component can be rearranged so as not to be logically contradictory, and a plurality of components can be combined into one or divided.

For example, in the above embodiment, as shown in FIG. 3, the gas detection device 1 was described as one device. However, the gas detection device 1 of the present disclosure is not limited to one device, and may include a plurality of independent devices.

In this disclosure, descriptions such as "first" and "second" are identifiers for distinguishing the configurations. In the configurations that are distinguished by the descriptions such as “first” and “second” in the present disclosure, the numbers in the configurations can be exchanged. The exchange of identifiers takes place simultaneously. Even after exchanging identifiers, the configurations are distinguished. Identifiers may be removed. Configurations with removed identifiers are distinguished by codes. The description of identifiers such as "first" and "second" in this disclosure should not be used to interpret the order of the configuration or to determine the existence of lower-numbered identifiers.

1 Gas detection device 2 Toilet bowl 2A Toilet bowl 2B Toilet seat 3 Electronic equipment 3A Display unit 10 Housing 20 Suction hole 22 Discharge path 23, 23-1, 23-2, 23-3 Flow path 25 Valve 30 Chamber 31, 31-1 , 31-2, 31-3 Sensor section 31S Sensor element 31R Resistance element 50 Supply section 61, 161 Storage section 62, 162 Communication section 63, 163 Sensor section 64, 164 Control section 100 Capsule type detector 163a Gas sensor 163b Temperature sensor 163c pH sensor 610 Database 611 First detection data 612 Second detection data 613 Distribution of intestinal bacteria 614 Biological information P1 Power terminal P2 Ground terminal

Claims (8)

a sensor unit capable of detecting a first component of a first exhaust gas of a subject contained in the sample gas and outputting first detection data;
a communication unit that communicates with a capsule-type detector capable of detecting a second component of a second exhaust gas generated in the body of the subject and acquires second detection data from the capsule-type detector;
A gas detection device, comprising: a control unit that generates analysis data based on the first detection data and the second detection data, and outputs the analysis data. The second component includes a non-common component that is not included in the first component,
The gas detection device according to claim 1, wherein the analysis data includes the first detection data and second detection data regarding the non-common component. The second component includes a common component contained in the first component,
The gas detection device according to claim 1 or 2, wherein the control section calibrates the sensitivity of the sensor section using the second detection data regarding the common component. The second component includes a common component contained in the first component,
The gas detection device according to claim 1 or 2, wherein the control unit corrects the first detection data using the second detection data regarding the common component. comprising a storage unit that stores the distribution of intestinal bacteria contained in the sample that produces the first exhaust gas,
The gas detection device according to claim 4, wherein the control unit corrects the generated analysis data based on the distribution of the intestinal bacteria. The communication unit further acquires biological information detected by the capsule detector inside the body of the subject,
The gas detection device according to any one of claims 1 to 5, wherein the control unit includes the biological information in the analysis data. The gas detection device according to claim 6, wherein the biological information is temperature information inside the subject's body. Detecting a first component contained in the sample gas to generate first detection data;
obtaining second detection data from a capsule detector capable of detecting a second component of gas generated within the body of the subject;
Generating analysis data based on the first detection data and the second detection data;
A gas detection method comprising: outputting the analytical data.

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