Expiration detection system
The breath detection system efficiently monitors exhalation data, including carbon dioxide concentration and breathing patterns, providing real-time feedback on the driver's status, addressing inefficiencies in existing systems by accurately detecting exhalation information.
Patent Information
- Application Number
- JP2023122834
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-07-27
- Publication Date
- 2025-02-06
AI Technical Summary
Existing breath detection systems for vehicles are not efficient in accurately detecting exhalation data, particularly carbon dioxide concentration, and do not provide real-time feedback on the driver's breathing patterns or status.
A breath detection system comprising a light emitting element, sensor, arithmetic element, transmitter, and receiver that calculates exhalation information based on carbon dioxide concentration, breathing cycle, and pressure changes, with real-time feedback through a display unit.
Accurately detects exhalation data, including carbon dioxide concentration and breathing patterns, providing real-time feedback on the driver's status, enhancing safety by monitoring breath patterns and alerting to potential states of excitement or relaxation.
Smart Images
Figure 2025018814000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to a breath detection system. [Background technology]
[0002] Patent Document 1 states that "This device can be easily installed inside a vehicle, making it possible to more easily detect the driver's drinking state." [Prior art document] [Patent documents] [Patent Document 1] JP 2009-092450 A Summary of the Invention
[0003] In a first aspect of the present invention, there is provided a breath detection system comprising a receiving unit that receives data related to breath, a computing element that calculates breath information related to a period or length of breathing based on the data related to breath, and a transmitting unit that transmits the breath information.
[0004] The transmitter may transmit status information relating to a status of the breath detection system. The status of the breath detection system may be a status in which the arithmetic element is capable of calculating breath information, or a status in which condensation has formed on the breath detection system.
[0005] In any of the breath detection systems described above, the transmission unit may transmit status information relating to a status of the breath detection system. The status of the breath detection system may include a status related to breath detection. The status related to breath detection may be controlled based on the breath information.
[0006] In any of the breath detection systems described above, the breath information may include at least one of a level-classified breathing period and a level-classified breathing length.
[0007] Any of the above breath detection systems may further include a light emitting element and a sensor that detects information corresponding to a carbon dioxide concentration contained in the breath by light emitted by the light emitting element. The data related to the breath may include information corresponding to the carbon dioxide concentration. The calculation element may calculate the breath information based on the information corresponding to the carbon dioxide concentration.
[0008] In any of the breath detection systems described above, the sensor may include a light receiving element that receives light of an intensity corresponding to the carbon dioxide concentration. The data related to the breath may be data based on the intensity of the light.
[0009] In any of the above breath detection systems, the sensor may include a pressure detection element that detects a change in pressure in response to breathing in. The data relating to breathing may be pressure-based data.
[0010] In any one of the breath detection systems described above, the processor may determine a breath detection state based on data from the sensor. The transmitter may further transmit information on the breath detection state.
[0011] In any of the breath detection systems described above, the receiving unit may receive temperature information relating to a temperature outside the breath detection system. The computing element may calculate the breath information based on the temperature information.
[0012] In any of the breath detection systems described above, the receiving unit may receive sound information relating to a sound outside the breath detection system. The computing element may calculate the breath information based on the sound information.
[0013] In any one of the breath detection systems described above, the receiving unit may receive a signal from an application installed in the breath detection system. The computing element may calculate the breath information based on the signal.
[0014] In any of the breath detection systems described above, the transmitting unit may transmit the breath information based on receiving a signal instructing the transmission of the breath information.
[0015] In any of the above breath detection systems, the calculation element may calculate the breath information at a predetermined calculation cycle. The transmission unit may transmit the breath information based on a first cycle of breathing calculated at a first timing and a second cycle of breathing calculated at a second timing after the calculation cycle has elapsed from the first timing.
[0016] Any of the above breath detection systems may further include a memory unit that stores the breath information.
[0017] In any of the breath detection systems described above, when the receiving section receives a storage command signal instructing the receiving section to store the breath information, the breath information may be stored in the storage section.
[0018] In any of the above breath detection systems, the light emitting element may be a quantum infrared light emitting element.
[0019] In any of the breath detection systems described above, the light receiving element may be a quantum type infrared light receiving element.
[0020] The above summary of the invention does not list all of the features of the present invention. Also, subcombinations of these features may also be inventions. [Brief description of the drawings]
[0021] [Figure 1] FIG. 1 illustrates an example of a breath detection device 200 according to an embodiment of the present invention. [Diagram 2] 1 is a block diagram showing an example of a breath detection device 200 and a breath detection system 100. FIG. [Diagram 3] 1 is a diagram illustrating an example of a breath detection device 200 and a breath detection system 100. FIG. [Figure 4A] 11 is a diagram showing an example of the relationship between the time and the ratio of the intensities of a first light receiving signal IR1 and a second light receiving signal IR2. FIG. [Figure 4B] FIG. 13 is a diagram illustrating an example of calculation of a baseline. [Diagram 5]2 is a diagram showing an example of a time waveform 14 of light 12 received by a light receiving element 22. FIG. [Figure 6] FIG. 13 is a diagram showing an example of the relationship between information Ic and exhaled breath information. [Figure 7] 1 is a diagram showing an example of state information 160 relating to a state S of the breath detection system 100. FIG. [Figure 8] 13 is a diagram showing an example of a display mode by a display unit 80. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0022] The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the scope of the invention according to the claims. Furthermore, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.
[0023] Fig. 1 is a diagram showing an example of a breath detection device 200 according to an embodiment of the present invention. In the example of Fig. 1, a living body 110 wears the breath detection device 200. In this example, the living body 110 is a human. The breath detection device 200 of this example is an entire headset worn on the head of the living body 110.
[0024] The breath detection device 200 of this example includes a fixed part 70 and a movable part 76. In this example, the fixed part 70 is attached to the head of the living body 110. The movable part 76 is provided so as to be movable relative to the fixed part 70. The movable part 76 of this example is rod-shaped. The fixed part 70 may include an arm part 72 and a connecting part 74. The arm part 72 may be an arc-shaped part that conforms to the shape of the head of the living body 110. One end of the rod-shaped movable part 76 may be connected to the connecting part 74, and the other end may be disposed near the mouth of the living body 110. The rod-shaped movable part 76 may be rotatable relative to the fixed part 70 with the connecting part 74 as the rotation axis.
[0025] The breath detection device 200 of this example includes a breath detection system 100. The breath detection system 100 may be included in the housing of the breath detection device 200. In this example, the breath detection system 100 is provided at the other end of the rod-shaped movable part 76. In this example, the living body 110 wears the breath detection device 200 on its head. The breath detection system 100 detects the breath 112 (described later) of the living body 110.
[0026] 2 is a block diagram showing an example of a breath detection device 200 and a breath detection system 100. The breath detection system 100 includes a calculation element 30 and a transmission unit 40. The breath detection system 100 may include a light-emitting element 10, a sensor 20, a receiving unit 50, and a storage unit 60. The breath detection system 100 of this example includes the light-emitting element 10, the sensor 20, the calculation element 30, the transmitting unit 40, the receiving unit 50, and the storage unit 60. The sensor 20 includes at least one of a light-receiving element 22 and a pressure detection element 24. The receiving unit 50 receives data related to the breath 112 (described later). The data is referred to as data Db.
[0027] The breath detection device 200 may include a display unit 80, a control unit 90, and a breath detection system 100. The control unit 90 may transmit a control signal Sc (described later) to the breath detection system 100.
[0028] FIG. 3 is a diagram showing an example of a breath detection device 200 and a breath detection system 100. The breath detection device 200 of this example includes a substrate 120 and a substrate 130. One surface 122 of the substrate 120 and one surface 132 of the substrate 130 face each other. In this example, the light-emitting element 10 is provided on the one surface 122, the sensor 20 is provided on the one surface 132, and the integrated circuit 140 is provided on the other surface 134. The arithmetic element 30, the transmitting unit 40, the receiving unit 50, the storage unit 60, and the control unit 90 (see FIG. 2) may be provided in the integrated circuit 140. The integrated circuit 140 may be provided in the housing of the breath detection device 200. In FIG. 3, the display unit 80 (see FIG. 2) is omitted.
[0029] The breath detection device 200 is, for example, a non-dispersive infrared (NDIR (Non-Dispersive InfraRed)) type gas sensor. The light emitting element 10 may be an LED (Light Emitting Diode). The light emitting element 10 in this example is a quantum infrared light emitting element. A quantum light emitting element is an element that emits light with energy corresponding to the energy of the forbidden band between the conduction band and the valence band when electrons in the conduction band transition to the valence band. In the quantum infrared light emitting element, this forbidden band energy corresponds to the wavelength of infrared light. The light emitting element 10 may emit light 12 with a wavelength absorbed by CO2 (carbon dioxide). In this example, the light emitting element 10 emits infrared light.
[0030] The sensor 20 detects information corresponding to the concentration of CO2 (carbon dioxide) contained in the exhaled breath 112 by the light 12 emitted by the light-emitting element 10. This information is referred to as information Ic. The data Db may include the information Ic. When the sensor 20 includes a light-receiving element 22, the light-receiving element 22 receives the light 12 emitted by the light-emitting element 10. When the sensor 20 includes a pressure detection element 24, the pressure detection element detects a change in pressure corresponding to the exhaled breath 112.
[0031] The exhaled breath 112 of the living body 110 (see FIG. 2 ) passes through the space 150. The light 12 passes through the space 150 between the surface 122 and the surface 132. The light 12 may pass through the space 150 in a direction intersecting the direction in which the exhaled breath 112 passes.
[0032] The light receiving element 22 in this example is a quantum infrared light receiving element. A quantum light receiving element is an element that receives light with energy corresponding to the energy of the forbidden band between the conduction band and the valence band when electrons in the valence band are excited to the conduction band. In a quantum infrared light receiving element, the energy of this forbidden band corresponds to the wavelength of infrared light.
[0033] The CO2 (carbon dioxide) contained in the exhaled breath 112 of the living body 110 absorbs at least a part of the light 12. An amount of the light 12 corresponding to the concentration of CO2 (carbon dioxide) contained in the exhaled breath 112 is absorbed by the CO2 (carbon dioxide). The light receiving element 22 receives the light 12 with an intensity corresponding to the concentration of CO2 (carbon dioxide) contained in the exhaled breath 112. A signal of the light 12 is defined as a first light receiving signal IR1.
[0034] The CO2 (carbon dioxide) contained in the exhaled breath 112 may absorb the light 12. Therefore, the amount of the light 12 received by the light receiving element 22 at the absorption wavelength of CO2 (carbon dioxide) may decrease. Therefore, the calculation element 30 can calculate the concentration of CO2 (carbon dioxide) or a value corresponding to the concentration based on the first light receiving signal IR1.
[0035] The light-emitting element 10 may include a built-in sensor 11. The built-in sensor 11 receives the light 12 that has not passed through the path through which the exhaled air passes. A signal of the light 12 is set as a second light-receiving signal IR2. The calculation element 30 may correct the first light-receiving signal IR1 based on the second light-receiving signal IR2. The calculation element 30 may correct output fluctuations due to changes in the amount of light of the light-emitting element 10 or temperature based on the second light-receiving signal IR2.
[0036] FIG. 4A is a diagram showing an example of the relationship between the intensity ratio of the first light receiving signal IR1 and the second light receiving signal IR2 and time. In this specification, the intensity ratio of the first light receiving signal and the second light receiving signal may be referred to as the light receiving signal ratio. The dotted line in FIG. 4A is the light receiving signal ratio before noise removal, and the solid line is the light receiving signal ratio after noise removal. The calculation element 30 may perform noise removal using a low-pass filter. As described above, the amount of light 12 received by the light receiving element 22 may decrease due to the absorption of light 12 by CO2 (carbon dioxide) contained in the exhaled breath 112. Therefore, when the exhaled breath 112 is detected, the light receiving signal ratio may decrease. Since the exhaled breath 112 may diffuse into the air, the light receiving signal ratio may decrease and then increase (recover). The fluctuation in the light receiving signal ratio from 10 seconds to 20 seconds in the figure corresponds to breathing. One valley in the light receiving signal ratio corresponds to one breath. In the example of Fig. 4A, five valleys appear in the waveform of the received light signal ratio, so Fig. 4A shows the received light signal ratio for five breaths.
[0037] Fig. 4B is a diagram showing an example of calculation of the baseline. The axes in Fig. 4B are the same as those in Fig. 4A. The solid line in Fig. 4B indicates the light receiving signal ratio after noise processing. The calculation element 30 may calculate the baseline of the waveform of the first light receiving signal IR1 from the light receiving signal ratio. The dotted line in the figure indicates the calculated baseline.
[0038] The baseline refers to a signal waveform due to a factor (disturbance) other than CO2 (carbon dioxide) contained in the exhaled breath 112. The baseline may be a waveform in which the component due to the concentration of CO2 (carbon dioxide) is reduced or removed from the waveform shown by the solid line in FIG. 4B. The baseline may include a component of the intensity of the light 12 irradiated by the light emitting element 10 and a fluctuation component due to a factor other than the change in the concentration of CO2 (carbon dioxide). When the breath detection system 100 detects breath, the temperature of the light emitting element 10 and the light receiving element 22 may change depending on the temperature of the breath. The change in temperature may change the characteristics of the light emitting element 10 and the light receiving element 22. The baseline may be a signal waveform that includes the influence of such a change in characteristics and does not include the influence of CO2 (carbon dioxide). The baseline may include the influence of the fluctuation in characteristics due to the temperature of the breath 112.
[0039] The calculation element 30 may calculate a baseline based on the ratio of the received light signals. There is a correlation between the ratio of the received light signals and the influence of temperature due to the exhaled air. Therefore, the calculation element 30 can reflect the influence of temperature due to the exhaled air 112 in the ratio of the received light signals based on this correlation.
[0040] The calculation element 30 may remove the baseline from the light receiving signal ratio. Removing the baseline may refer to subtracting the baseline value at each time from the signal value at that time. The calculation element 30 calculates and removes the baseline, so that the calculation element 30 can correct changes in the signal value due to factors other than CO2 (carbon dioxide) contained in the exhaled breath 112. In this specification, the signal after removing the baseline from the light receiving signal ratio may be referred to as a determination signal.
[0041] The computing element 30 may determine that exhalation has been detected when the value of the determination signal is lower than the determination threshold. In FIG. 4B, the determination threshold is indicated by a dashed line. The determination threshold may be determined in advance. The determination threshold may be set from outside the breath detection system 100. The determination threshold may be set by the living body 110 (see FIG. 2). The determination threshold may be estimated based on data Db (described later) and updated to an estimated value.
[0042] The computing element 30 may calculate the breathing cycle or length during a period in which the value of the determination signal is lower than the determination threshold. The computing element 30 may determine that one continuous period in which the value of the determination signal is lower than the determination threshold is the breathing length. The computing element 30 may calculate the sum of one continuous period in which the value of the determination signal is higher than the determination threshold and one continuous period in which the value of the determination signal is lower than the determination threshold as the breathing cycle. The computing element 30 may calculate an average value during a predetermined measurement period as the breathing cycle or length. By calculating the breathing cycle or length, the computing element 30 can determine whether the living body 110 is excited, relaxed, or the like.
[0043] 5 is a diagram showing an example of a time waveform 14 of the light 12 received by the light receiving element 22. The start time of the time waveform 14 is set as start time ts, and the end time is set as end time te. The time between the start time ts and the end time te is set as time Tc. The information Ic may include the time waveform 14.
[0044] FIG. 6 is a diagram showing an example of a relationship between information Ic and breath information. The calculation element 30 calculates breath information related to the breathing cycle or length of the living body 110 based on the data Db. The breath information is defined as breath information Ib. The calculation element 30 may calculate the breath information Ib based on the information Ic. In this example, the calculation element 30 calculates the breath information Ib based on the time waveform 14. The calculation element 30 may transfer the breath information Ib to the transmission unit 40.
[0045] The data Db may be data based on the light 12 having an intensity corresponding to the CO2 (carbon dioxide) concentration. The data based on the light 12 having an intensity corresponding to the CO2 (carbon dioxide) concentration may be a time waveform 14 of intensity data of the light 12 received by the light receiving element 22, the intensity of which is equal to or greater than a predetermined threshold value. The calculation element 30 may calculate the breath information Ib based on the time waveform 14. The calculation element 30 may calculate the breath information Ib based on the time waveform 14 during the time Tc.
[0046] The pressure detection element 24 detects a change in pressure according to the exhaled breath 112. The data Db may be data based on the pressure of the exhaled breath 112. The data based on the pressure of the exhaled breath 112 may be data on the exhaled breath 112 having a pressure equal to or higher than a predetermined threshold value among the exhaled breath 112 detected by the sensor 20. The calculation element 30 may calculate the exhaled breath information Ib based on the data.
[0047] The transmitting unit 40 transmits the breath information Ib. The transmitting unit 40 may further transmit information that the sensor 20 is detecting the breath 112. The computing element 30 may determine the detection state of the breath 112 based on the data Db. The detection state of the breath 112 refers to a state in which the sensor 20 is not detecting the breath 112 or is detecting the breath 112. The transmitting unit 40 may further transmit information on the detection state of the breath 112. The control unit 90 (see Figs. 2 and 3) may control the transmitting unit 40 so that the transmitting unit 40 transmits the breath information Ib to the display unit 80 (see Fig. 2), and may control the display unit 80 to display the breath information Ib. The control unit 90 may control the transmitting unit 40 so that the transmitting unit 40 transmits information to the display unit 80 that the breath 112 is being detected, and may control the display unit 80 to display information that the breath 112 is being detected.
[0048] The breath information Ib is, for example, numerical data indicating the cycle or length of breathing. The data Db is, for example, data of the light 12 received by the light receiving element 22. As described above, the calculation element 30 may determine that breath has been detected when the value of the determination signal is lower than the determination threshold value. Therefore, after the calculation element 30 transfers the breath information Ib to the transmission unit 40, the calculation element 30 does not need to perform a determination for breath detection. This makes it easier to reduce the calculation burden on the calculation element 30.
[0049] The receiving unit 50 may receive temperature information related to the temperature outside the breath detection system 100. The temperature outside the breath detection system 100 may be the air temperature of a space in a case where the living body 110 wearing the breath detection device 200 is located in the space. The calculation element 30 may calculate the breath information Ib based on the temperature information.
[0050] The receiving unit 50 may receive sound information related to sounds outside the breath detection system 100. Sounds outside the breath detection system 100 may refer to sounds outside the breath detection device 200 (see FIG. 1). When the living body 110 wearing the breath detection device 200 is located in a certain space, sounds outside the breath detection system 100 may be sounds generated in the space. The sounds generated in the space may include sounds of the living body 110 speaking. The calculation element 30 may calculate breath information Ib based on the sound information.
[0051] The breath detection system 100 may be equipped with an application. Having an application equipped may mean that the application is installed. The receiving unit 50 may receive a signal of the application. The signal of the application may include a signal related to the type of the application. The type of application may be, for example, for games, for business, maps, etc. The calculation element 30 may calculate the breath information Ib based on the signal of the application.
[0052] FIG. 7 is a diagram showing an example of state information 160 relating to state S of the breath detection system 100. The state S may include information relating to a plurality of states relating to the detection of the breath 112 by the breath detection system 100. In this example, the state S includes information relating to three states (states S1 to S3) of the breath detection system 100. The state S1 is a state in which the breath 112 can be detected. The state S1 may be a state in which the calculation element 30 can calculate the breath information Ib. The state S2 is a state in which it is difficult to detect the breath 112. The state S2 may be a state in which it is difficult for the calculation element 30 to calculate the breath information Ib. The state S3 is a state in which the breath 112 is being detected. The control unit 90 (see FIG. 2 and FIG. 3) may detect the state S.
[0053] State S1-1 is state S1 when the breath detection system 100 is in an active state. The active state may be a state in which the light-emitting element 10 periodically emits light 12 (see FIG. 3). State S1-2 is state S1 when the breath detection system 100 is in a standby state. The standby state may be a state in which the light-emitting element 10 does not emit light 12. The power consumption of the breath detection device 200 in the standby state is lower than the power consumption of the breath detection device 200 in the active state. State S1-1 and state S1-2 may be controlled by the control unit 90 (see FIG. 2 and FIG. 3).
[0054] State S2 may be a state in which it is difficult to detect the breath 112 due to a low ratio (so-called S / N ratio) between the signal of the light 12 received by the light receiving element 22 and the noise detected by the light receiving element 22. State S2-1 is a state in which condensation has occurred in the breath detection system 100. State S2-1 may be a state in which it is difficult to detect the breath 112 due to the occurrence of condensation in the breath detection system 100.
[0055] The transmitting unit 40 (see FIG. 6) may further transmit the status information 160. The control unit 90 (see FIGS. 2 and 3) may control the transmitting unit 40 so that the transmitting unit 40 transmits the status information 160 to the display unit 80, and may control the display unit 80 to display the status information 160.
[0056] The state S may be controlled based on the breath information Ib (see FIG. 6). The control unit 90 (see FIG. 2 and FIG. 3) may generate a control signal Sc (see FIG. 2) for controlling the state S based on the breath information Ib. The control unit 90 may transmit the control signal Sc to the receiving unit 50. The state S may be controlled based on the control signal Sc received by the receiving unit 50. The transmitting unit 40 may transmit state information 160 related to the state S.
[0057] The breath information Ib may include at least one of the breathing cycle divided into levels of the living body 110 and the length of breathing divided into levels. The breathing cycle divided into levels is, for example, a breathing cycle divided into a plurality of stages. The breathing cycle has, for example, three stages: long, normal, and short. A normal breathing cycle may refer to an average breathing cycle of the living body 110. A minimum cycle and a maximum cycle may be predefined for the average breathing cycle. A long breathing cycle may refer to a cycle that exceeds the maximum cycle. A short breathing cycle may refer to a cycle that is shorter than the minimum cycle.
[0058] The leveled breathing length is, for example, a breathing length divided into a plurality of stages. The breathing length has, for example, three stages: long, normal, and short. A normal breathing length may refer to an average breathing length of the living body 110. A minimum length and a maximum length may be predefined for the average breathing length. A long breathing length may refer to a breathing length that exceeds the maximum length. A short breathing length may refer to a breathing length that is less than the minimum length.
[0059] The breath information Ib may include a breathing rate of the living body 110 divided into levels. The divided breathing rate is, for example, a breathing rate divided into a plurality of stages. The breathing rate has, for example, three stages: fast, normal, and slow. The fast, normal, and slow breathing rates may correspond to long, normal, and short breathing cycles, respectively.
[0060] 8 is a diagram showing an example of a display mode by the display unit 80. The display unit 80 may display the breath information Ib. The display unit 80 of this example has a color display area D1 and a numerical value display area D2.
[0061] In this example, the color display area D1 displays a color according to the state S of the breath detection system 100. For example, the color display area D1 displays blue in state S1, red in state S2, and green in state S3. In this example, the numerical display area D2 displays breath information Ib relating to the period or pulse width of the breath 112. As described above, the amount of numerical data relating to the breath information Ib tends to be less than the amount of data relating to the data Db. Therefore, the amount of data displayed by the display unit 80 tends to be reduced. Therefore, the burden of displaying data on the display unit 80 tends to be reduced.
[0062] The transmitting unit 40 may transmit the breath information Ib based on receiving a signal indicating that the breath information Ib should be transmitted. The signal indicating that the breath information Ib should be transmitted may be included in the control signal Sc. The transmitting unit 40 may transmit the breath information Ib upon receiving a signal indicating that the breath information Ib should be transmitted. The calculation element 30 may calculate the breath information Ib based on receiving a signal indicating that the breath information Ib should be transmitted. The calculation element 30 may calculate the breath information Ib upon receiving the signal. The transmitting unit 40 may transmit the calculated breath information Ib.
[0063] Before the receiving unit 50 receives a signal to transmit the breath information Ib, the state S of the breath detection system 100 may be state S1-2 (standby, see FIG. 7). The state S of the breath detection system 100 may change to state S1-1 (active, see FIG. 7) based on the receiving unit 50 receiving a signal to transmit the breath information Ib. After the state S changes to state S1-1, the calculation element 30 may calculate the breath information Ib. The transmission unit 40 may transmit the calculated breath information Ib. This makes it easier to reduce power consumption of the breath detection system 100.
[0064] The calculation element 30 may calculate the breath information Ib at a predetermined calculation period T. The calculation element 30 calculates the breath information Ib at a first timing t1 to an n-th timing t n(n is an integer of 2 or more). The calculation period T may be shorter than the time Tc (see FIG. 5). n may be included between the start time ts and the end time te in FIG.
[0065] The calculation element 30 may calculate a first period T1' of breathing of the living body 110 at a first timing t1. The first timing t1 may be one timing during the time Tc (see FIG. 5). The calculation element 30 may calculate the first period T1' at the first timing t1 based on the time waveform 14. Similarly, the calculation element 30 may calculate a second period T2' of breathing of the living body 110 at a second timing t2. The second timing t2 may be another timing during the time Tc (see FIG. 5). The calculation element 30 may calculate the second period T2' at the second timing t2 based on the time waveform 14.
[0066] The transmitting section 40 may transmit the breath information Ib based on the first cycle T1' and the second cycle T2' of breathing of the living body 110. This allows the living body 110 to recognize the breath information Ib based on a plurality of timings.
[0067] The transmitting unit 40 may transmit the breath information Ib based on the difference between the first period T1' and the second period T2'. The transmitting unit 40 may transmit the breath information Ib when the difference between the first period T1' and the second period T2' exceeds a predetermined threshold. For example, when the living body 110 becomes in a state of tension between the first timing t1 and the second timing t2, the second period T2' may change from the first period T1'. When the difference between the first period T1' and the second period T2' exceeds a predetermined threshold, the state of tension of the living body 110 may be a state in which a warning should be issued to the living body 110.
[0068] The transmitting unit 40 may transmit the breath information Ib. The display unit 80 may display the breath information Ib. This allows the living body 110 to recognize the state of the living body 110. The control unit 90 may generate information related to the state of the living body 110 based on the breath information Ib. For example, the control unit 90 generates information that the living body 110 is in a tense state based on the breath information Ib. The display unit 80 may display the information related to the state of the living body 110. For example, the display unit 80 may display the text "You are tense." This allows the living body 110 to recognize that it is in a tense state.
[0069] The breath information Ib may be stored in the storage unit 60 (see FIG. 2). The calculation element 30 may calculate a judgment threshold (see FIG. 4B) for judging the breath 112 based on the breath information Ib stored in the storage unit 60. When the breath information Ib includes the breathing cycle of the living body 110 divided into levels, the calculation element 30 may judge the breathing level of the living body 110 based on the breathing cycle of the breath information Ib stored in the storage unit 60. When the breath information Ib includes the breathing rate of the living body 110 divided into levels, the calculation element 30 may judge the breathing level of the living body 110 based on the breathing rate of the breath information Ib stored in the storage unit 60.
[0070] The control signal Sc may include a storage command signal to store the breath information Ib in the storage unit 60 (see FIG. 2). When the receiving unit 50 (see FIG. 2) receives the storage command signal, the breath information Ib may be stored in the storage unit 60. The storage unit 60 may store the breath information Ib in response to reception of the storage command signal by the receiving unit 50. The storage command signal may be transmitted by the control unit 90 (see FIG. 2).
[0071] Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is clear to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the description of the claims that such modifications and improvements can also be included in the technical scope of the present invention.
[0072] It should be noted that the order of execution of each process, such as operations, procedures, steps, and stages, in the devices, systems, programs, and methods shown in the claims, specifications, and drawings is not specifically stated as "before," "prior to," etc., and may be realized in any order unless the output of a previous process is used in a later process. Even if the operational flow in the claims, specifications, and drawings is explained using "first," "next," etc. for convenience, it does not mean that it is essential to perform the process in this order. [Explanation of symbols]
[0073] 10 light-emitting element, 11 built-in sensor, 12 light, 14 time waveform, 20 sensor, 22 light-receiving element, 24 pressure detection element, 30 calculation element, 40 transmission unit, 50 reception unit, 60 memory unit, 70 fixed unit, 72 arm unit, 74 connection unit, 76 movable unit, 80 display unit, 90 control unit, 100 breath detection system, 110 living body, 120 board, 122 one side, 130 board, 132 one side, 134 other side, 150 space, 160 status information, 200 breath detection device
Claims
1. a receiving unit for receiving data related to exhalation, a calculation element for calculating exhalation information related to a period or length of breathing based on the data related to the exhalation, and a transmitting unit for transmitting the exhalation information; A breath detection system comprising:
2. The transmission unit transmits status information relating to a status of the breath detection system, The breath detection system according to claim 1 , wherein the state is a state in which the arithmetic element is capable of calculating the breath information, or a state in which condensation occurs in the breath detection system.
3. The transmission unit transmits status information relating to a status of the breath detection system, the state includes a state related to the detection of the breath, The state regarding the detection of the breath is controlled based on the breath information. The breath detection system of claim 1 .
4. The breath detection system according to claim 1 , wherein the breath information includes at least one of a level-classified period of the breath and a level-classified length of the breath.
5. A light-emitting element; a sensor that detects information corresponding to a carbon dioxide concentration contained in the exhaled breath by light emitted by the light emitting element; Further equipped with the data relating to the exhaled breath includes the information corresponding to the carbon dioxide concentration; The computing element calculates the exhaled breath information based on the information corresponding to the carbon dioxide concentration. The breath detection system of claim 1 .
6. The sensor includes a light receiving element that receives light of an intensity corresponding to the carbon dioxide concentration, The data regarding the exhaled breath is based on the intensity of light. The breath detection system according to claim 5.
7. The sensor includes a pressure detection element that detects a change in pressure corresponding to the exhalation, The data regarding the exhaled breath is pressure-based data. The breath detection system according to claim 5.
8. The breath detection system according to claim 5 , wherein the calculation element determines a detection state of the breath based on the data of the sensor, and the transmission unit further transmits information on the detection state of the breath.
9. The receiving unit receives temperature information regarding a temperature outside the breath detection system, The computing element calculates the exhaled breath information based on the temperature information. A breath detection system according to any one of claims 1 to 3.
10. The receiving unit receives sound information regarding a sound outside the breath detection system, The computing element calculates the exhalation information based on the sound information. A breath detection system according to any one of claims 1 to 3.
11. The receiving unit receives a signal from an application installed in the breath detection system, The computing element calculates the breath information based on the signal. A breath detection system according to any one of claims 1 to 3.
12. The breath detection system according to claim 1 , wherein the transmission unit transmits the breath information based on receipt of a signal indicating that the breath information should be transmitted.
13. The computing element calculates the breath information at a predetermined calculation period, the transmitting unit transmits the exhaled breath information based on a first cycle of the breathing calculated at a first timing and a second cycle of the breathing calculated at a second timing after the calculation cycle has elapsed from the first timing. A breath detection system according to any one of claims 1 to 3.
14. The breath detection system according to claim 1 , further comprising a storage unit that stores the breath information.
15. The breath detection system according to claim 14, wherein, when the receiving unit receives a storage command signal instructing that the breath information should be stored, the storage unit stores the breath information.
16. The breath detection system according to claim 5 , wherein the light-emitting element is a quantum infrared light-emitting element.
17. The breath detection system according to claim 6 , wherein the light receiving element is a quantum type infrared light receiving element.