JP2016101305A - Excessive intake determination device and excessive intake warning device with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excessive intake determination device capable of simply determining excessive intake of foods and drinks by a target person, and to provide an excessive intake warning device with the same.SOLUTION: An excessive intake determination device 10 is provided with: a biological information detection part 32 for detecting the heartbeat signals of a target person before and after the target person takes foods and drinks; and a determination part 38 which determines whether or not the target person excessively takes foods and drinks, on the basis of variation in index obtained from the heartbeat signals detected by the biological information detection part 32 before and after the target person takes foods and drinks.SELECTED DRAWING: Figure 2

Description

    The present invention relates to an overdose determination device and an overdose warning device including the same.

    As a prior art, there is an overdose determination device that determines an excessive intake of food of a subject (see Patent Document 1). In this overdose determination device, as described in paragraph 0016 of the same document, for example, the type and amount of food ingested by the subject are appropriately input to the server. In addition, data such as the age of the subject, daily calorie consumption, and the like are also input to the server. In the overdose determination device, attention is given to the subject to limit food intake based on such data.

JP 2001-275997 A

    In the overdose determination device described in Patent Document 1, it is necessary to appropriately input the age of the subject, the calorie consumption, the type and amount of the ingested food, and the like. For this reason, there are problems that it takes time to input data and the amount of data processing increases.

    The present invention has been made in view of such a point, and an object thereof is to provide an overdose determination device that can easily determine overdose of a subject's food and drink, and an overdose warning device including the same. It is.

    A first invention is directed to an overdose determination device, and a biological information detection unit for detecting a heartbeat signal of the subject (H) before and after the start of intake of food and drink by the subject (H) ( 32) and the subject (H) excessively consumes the food and drink based on the change in the index obtained from the heartbeat signal detected by the biological information detection unit (32) before and after the start of the intake of the food and drink. And a determination unit (38) for determining whether or not it is ingested.

    In 1st invention, a biological information detection part (32) is a subject's (H) heart rate signal in each before the start of ingestion of the food and drink by the subject (H), and after the start of ingestion of this food and drink. To detect. A judgment part (38) compares the parameter | index based on the heart rate signal which the biometric information detection part (32) detected about each before the start of ingestion of food and drink, and after the start of ingestion of this food and drink. The index based on the heartbeat signal is an index indicating, for example, the nerve activity and heartbeat information (heart rate, etc.) of the subject (H). And when the subject (H) ingests an appropriate amount of food and drink and when the subject (H) consumes food and drink excessively, before and after the start of intake of food and drink, Differences occur in the behavior of changes in these indicators. Therefore, the determination unit determines whether or not the subject (H) is ingesting food and drink excessively based on such a change in the index.

    A second invention is characterized in that, in the first invention, the determination unit (38) includes an overeating determination unit (39) for determining an excessive intake of food which is a kind of the food and drink. To do.

    In the second invention, the overeating determination unit (39) of the determination unit (38) allows the subject (H) to eat food based on a change in the index based on the heart rate signal before and after the start of food intake. Determine if you are taking too much.

    According to a third invention, in the second invention, the overeating determination unit (39) is configured such that the subject (H) obtained from the heartbeat signal detected by the biological information detection unit (32) before starting the intake of the food. ) And the parasympathetic nerve activity of the subject (H) before the start of food intake is the above-mentioned food. When one or both of the second determination conditions indicating that the amount has decreased after the start of ingestion is established, the subject (H) is configured to determine that the subject is ingesting the food in excess. It is characterized by.

    In the third invention, the overeating determination unit (39) determines that the subject (H) is excessively eating food based on an index indicating the parasympathetic nerve activity obtained from the heartbeat signal (hereinafter referred to as overeating) Say). Specifically, the overeating determination unit (39) determines that the target person (H) is overeating when one or both of the following first determination condition and second determination condition are satisfied.

    The first determination condition is that even if the parasympathetic nerve activity of the subject (H) obtained from the heartbeat signal detected by the biological information detection unit (32) before the start of food intake continues for a predetermined time from the start of food intake. , Do not increase. That is, when a person starts taking food, a feeling of fullness is gradually obtained, and normally, the parasympathetic nerve activity of the person increases. In this case, it can be determined that the person is taking food moderately. On the other hand, if the parasympathetic nerve activity does not increase after a person has ingested the start of food, the satiety center is not functioning normally, and it can be determined that the person is eating too much food. . Therefore, the overeating determination unit (39) sets the first determination condition as one of the conditions for determining overeating.

    The second determination condition is that the parasympathetic nerve activity of the subject (H) obtained from the heartbeat signal detected by the biological information detection unit (32) before the start of food intake has decreased after the start of food intake. That is, even if a person starts to eat food, parasympathetic nerve activity decreases, and it can be determined that the satiety center is not functioning normally and that food is being consumed excessively. Therefore, the overeating determination unit (39) sets the second determination condition as one of the conditions for determining overeating.

    According to a fourth invention, in any one of the first to third inventions, the determination unit (38) includes an overdose determination unit (40) for determining an excessive intake of an alcoholic beverage that is a kind of the food and drink. It is characterized by having.

    In the fourth invention, the overdose determining unit (40) of the determining unit (38) determines whether the subject (H) is alcohol based on a change in the index based on the heartbeat signal before and after the start of ingestion of the alcoholic beverage. Determine if you are consuming too much beverage.

    In a fifth aspect based on the fourth aspect, the overdrinking determination unit (40) is the target obtained from the heartbeat signal detected by the biological information detection unit (32) at least before the start of intake of the alcoholic beverage. When the third determination condition indicating that the heart rate of the person (H) has increased after the start of ingestion of the alcoholic beverage is satisfied, it is determined that the subject (H) is ingesting excessive drinks. It is characterized by being configured.

    In the fifth invention, the overdose determining unit (40) is that the subject (H) is excessively drinking alcoholic beverage based on at least the heart rate of the subject (H) obtained from the heartbeat signal ( Hereinafter, it is also referred to as “too much drinking”. Specifically, the excessive drinking determination unit (40) determines that the subject (H) is drinking too much when at least the following third determination condition is satisfied.

    The third determination condition is that the heart rate (reciprocal of heartbeat interval) of the subject (H) obtained from the heartbeat signal detected by the biological information detection unit (32) before the start of alcohol beverage intake increased after the start of alcohol intake. That is. That is, if the subject (H) excessively consumes alcoholic beverages, the heart rate of the subject (H) increases, so the overdose determining unit (40) uses this to drink the subject (H) Judge past.

    In the present invention, unlike the overeating determination unit (39) according to the third invention described above, the subject (H) is drinking too much the third determination condition indicating an increase in the heart rate of the subject (H). This is a necessary condition for judging. That is, even if the subject (H) eats too much, the heart rate does not increase, but if the subject (H) is drinking too much, the heart rate increases. Therefore, the determination unit (38) of the present invention can determine that the subject (H) is not eating too much but drinking too much.

    In a sixth aspect based on the fifth aspect, the excessive drinking determination unit (40) is configured so that the biological information detection unit (32) satisfies the third determination condition and before the start of ingestion of the alcoholic beverage. A fourth determination condition indicating that the parasympathetic nerve activity obtained from the detected heartbeat signal does not increase even if a predetermined time has elapsed from the start of ingestion of the alcoholic beverage, and a subject (H ), When either or both of the fifth determination condition indicating that the parasympathetic nerve activity has decreased after the start of ingestion of the alcoholic beverage is satisfied, the subject (H) excessively ingests the alcoholic beverage. It is characterized by being comprised so that it may determine.

    In the sixth aspect of the invention, the overdose determining unit (40) determines overdose of the subject (H) based on the index indicating the parasympathetic nerve activity obtained from the heartbeat signal. Specifically, when the third determination condition is satisfied and one or both of the following fourth determination condition and fifth determination condition are satisfied, the overdrinking determination unit (40) Determine that you are drinking too much.

    The fourth determination condition is that the parasympathetic nerve activity of the subject (H) obtained from the heartbeat signal detected by the biological information detector (32) before the start of ingestion of the alcoholic beverage has passed a predetermined time from the start of ingestion of the alcoholic beverage. However, it does not increase. In other words, when a person starts taking alcoholic beverages, the parasympathetic nerve activity of the subject (H) increases, but if this parasympathetic nerve activity does not rise easily, it can be determined that the person is taking excessive alcoholic beverages. . Therefore, the excessive drinking determination unit (40) sets the fourth determination condition as one of the conditions for determining excessive drinking.

    The fifth determination condition is that the parasympathetic nerve activity of the subject (H) obtained from the heartbeat signal detected by the biological information detection unit (32) before the start of ingestion of alcoholic beverage has decreased after the start of ingestion of alcoholic beverage. . In other words, it can be determined that the parasympathetic nerve activity is reduced even though the person starts to drink the alcoholic beverage, and the alcoholic beverage is excessively consumed. Therefore, the excessive drinking determination unit (40) sets the fifth determination condition as one of the conditions for determining excessive drinking.

    In a seventh aspect of the present invention, in any one of the first to sixth aspects, the pressure sensor is provided in a seat (C1) on which the subject (H) is seated and the body motion of the subject (H) acts. A tube (20), and a pressure receiving unit (31) that detects a change in internal pressure of the pressure-sensitive tube (20) and outputs a signal corresponding to the change in internal pressure, and the biological information detection unit (32) It is configured to detect the heartbeat signal of the subject (H) based on the signal output from the pressure receiving unit (31).

    In the seventh invention, the body movement of the subject (H) seated on the seat (C1) acts on the pressure-sensitive tube (20), and the internal pressure of the pressure-sensitive tube (20) changes. The pressure receiver (31) outputs a signal corresponding to the change in internal pressure, and the biological information detector (32) extracts a heartbeat signal based on this signal. Thereby, the excessive intake of the food / beverage of the subject (H) of the seated state can be judged easily.

    An eighth invention is directed to an overdose warning device. The overdose determination device (10) according to any one of the first to seventh inventions, and the oversubject determination device (10) When it is determined that the food or drink is excessively consumed, a display unit (61) that displays a sign indicating a warning is provided.

    In the eighth invention, when the determination unit (38) of the overdose determination device (10) determines the excessive intake of food and drink by the subject (H), a sign indicating a warning is displayed on the display unit (61). . Thereby, it is possible to promptly notify the subject person (H), a person who provides meals to the subject person (H), and the like that the subject person (H) is ingesting food and drink excessively.

    In the present invention, an index based on the heart rate signal of the subject (H) is obtained before and after the subject (H) starts ingesting food and drink, and the subject (H) eats and drinks based on the change in the index. Judging excessive intake of things. Therefore, as in the conventional example, it is possible to easily determine the excessive intake of food and drink without inputting the characteristics of the subject, the type and amount of the consumed food and drink, and the like.

    Moreover, in this invention, after a subject (H) starts ingestion of food and drink, it can be determined whether the subject (H) is ingesting food and drink excessively during ingestion of this food and drink. Therefore, after it is determined that there is an excessive intake, eating and drinking of the subject (H) can be quickly terminated, and excessive eating and excessive drinking can be minimized.

    Moreover, in this invention, excessive intake is determined based on the change of the parameter | index before and after the start of intake of food and drink. That is, this change is a value that takes into account the individual difference of the subject (H). Therefore, it can also suppress that an error arises in the judgment result of the excessive intake of food and drink with individual difference of a subject person (H).

    According to the second invention, it is possible to easily and quickly determine whether the subject (H) is overeating, and to suppress an error in the determination result of excessive intake of food due to individual differences of the subject (H). .

    According to the third invention, overeating of the subject (H) can be easily determined using the change in the parasympathetic nerve activity of the subject (H).

    According to the fourth aspect of the invention, it is possible to easily and quickly determine whether the subject (H) is overdrinking, and to suppress an error in the determination result of excessive intake of alcoholic beverages due to individual differences of the subject (H). it can.

    According to the fifth aspect of the present invention, it is possible to easily determine whether the subject (H) is overdrinking using the change in the heart rate of the subject (H). The increase in the heart rate of the subject (H) does not occur when eating too much, but is caused by drinking too much. Therefore, it can be reliably determined that the subject (H) is not eating too much but drinking too much.

    According to the sixth invention, in addition to the increase in heart rate, the use of the change in the parasympathetic nerve activity of the subject (H) makes it possible to easily and more reliably determine whether the subject (H) is overdrinking.

    According to the seventh invention, it is possible to easily determine the excessive intake of food and drink of the subject (H) seated on the seat (C1) such as a chair, a seat, and a cushion.

    According to the eighth invention, the subject (H), the provider of the meal, the restaurant clerk, etc. are notified via the display unit (61) that the subject (H) has consumed the food or drink excessively. We can inform you promptly.

FIG. 1 is a schematic configuration diagram illustrating an overall configuration of an overdose warning system according to an embodiment. FIG. 2 is a block diagram of the overdose warning system according to the embodiment. FIG. 3 is a flowchart showing the operation of the overdose warning device according to the embodiment. FIG. 4 is a table comparing an example of changes in the index based on the heart rate signal before and after eating, in a normal case and in an overdose case. FIG. 5 is a table comparing an example of changes in an index based on a heartbeat signal between the start of drinking alcohol and after the start of drinking, in a normal case and in an overdose case. FIG. 6 is a block diagram of an overdose warning system according to the first modification. FIG. 7 is a block diagram of an overdose warning system according to the second modification.

    Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use.

    An embodiment of the present invention is an overdose warning system (S) (overdose warning device) that warns a subject (H) when the subject (H) consumes food or drink excessively. The overdose warning system (S) of the present embodiment is applied to a general household. As shown in FIG. 1, the overdose warning system (S) is provided, for example, in a dining room where a plurality of subjects (H) eat and drink.

    In the dining room, one table (D) and a plurality (three in this example) of chairs (C) arranged so as to surround the table (D) are installed. Each chair (C) is provided with a seat (C1) on which a corresponding subject (H) is seated and a backrest (C2) on which the subject (H) rests. In FIG. 1, only one of the three subjects (H) corresponding to the three chairs (C) is illustrated. The excessive intake warning system (S) is provided with a plurality (three in this example) of excessive intake determination devices (10) so as to correspond to each chair (C) and the subject (H). Further, the overdose warning system (S) is provided with one terminal unit (60) to which a signal indicating each determination result of each overdose determination device (10) is input.

<Overall configuration of overdose determination device>
As shown in FIGS. 1 and 2, the overdose determination device (10) according to the embodiment includes a single pressure-sensitive tube (20) and one determination in which one end of the pressure-sensitive tube (20) is connected. The unit (30) and one communication unit (50) for transmitting the signal output from the determination unit (30) to the terminal unit (60) are provided.

<Pressure-sensitive tube>
The pressure sensitive tube (20) is configured in a hollow tube shape. The pressure sensitive tube (20) is made of resin (for example, made of vinyl chloride) having an inner diameter of about 4 mm. Each pressure-sensitive tube (20) is provided so as to correspond to the seat (C1) of each chair (C). Specifically, the pressure-sensitive tube (20) includes a pressure-sensitive body (21) provided on the upper surface of the seat (C1), and a relay connecting the pressure-sensitive body (21) and the determination unit (30). Part (22).

    The pressure-sensitive part main body (21) is disposed near the back (close to the backrest (C2)) of the seat (C1). The pressure sensitive part main body (21) extends linearly along the rear edge of the seat part (C1). The pressure-sensitive part main body (21) extends substantially across the left and right ends of the seat part (C1). An opening (21a) is formed at one end of the pressure-sensitive part main body (21) (the end opposite to the end connected to the relay part (22)). That is, the pressure sensitive tube (20) does not have a sealed structure. Therefore, when a body motion acts on the pressure sensitive tube (20), the dynamic pressure of the pressure sensitive tube (20) changes.

    The relay part (22) is connected between the other end of the pressure sensitive part main body (21) and the determination unit (30). Specifically, the relay part (22) is connected between the other end of the pressure-sensitive part main body (21) and the microphone (31) of the determination unit (30). The relay part (22) is curved from the other end of the pressure-sensitive part main body (21) and extends to the back side of the seat part (C1).

<Judgment unit>
As shown in FIG. 1, each determination unit (30) is provided one by one corresponding to each pressure sensitive tube (20). Each determination unit (30) is fixed to the back surface (lower surface) of the seat (C1), for example. As shown in FIG. 2, each determination unit (30) includes one microphone (31), one biological information detection unit (32), and one determination unit (38).

〔microphone〕
One end of the relay part (22) of the pressure sensitive tube (20) is connected to the microphone (31). The microphone (31) constitutes a pressure receiving portion to which the internal pressure of the pressure sensitive tube (20) acts. That is, when the body movement of the subject (H) is received by the pressure sensitive tube (20), the internal pressure of the pressure sensitive tube (20) changes. The microphone (31) outputs a signal corresponding to this change in internal pressure.

[Biological information detection unit]
The biological information detection unit (32) detects the biological signal of the subject (H) based on the signal output from the microphone (31). The biological information detection unit (32) includes a period before the start of the intake of food and drink by the subject (H) (hereinafter also referred to as the first period T1) and the start of the intake of food and drink by the subject (H). The biological signal of the subject (H) is detected in both the period (hereinafter also referred to as the second period T2). The biological information detection unit (32) includes a body motion signal extraction unit (33), a heartbeat signal extraction unit (34), a heartbeat interval extraction unit (35), a heartbeat fluctuation extraction unit (36), and a determination index extraction unit. (37).

    The body motion signal extraction unit (33) performs predetermined preprocessing on the signal output from the microphone (31), and then performs the body of the subject (H) in both the first period T1 and the second period T2. Extract motion signals. Here, the body motion signal is a signal including a rough body motion derived from a large motion of the entire body of the subject (H) and a fine motion derived from heartbeat / respiration.

    The heartbeat signal extraction unit (34) extracts a heartbeat signal derived from the heartbeat of the subject (H) from the body motion signal extracted by the body motion signal extraction unit (33). The heartbeat signal extraction unit (34) extracts this heartbeat signal in both the first period T1 and the second period T2.

    The heartbeat interval extraction unit (35) obtains a heartbeat interval (peristaltic interval) based on the heartbeat signal extracted by the heartbeat signal extraction unit (34). The heartbeat interval extraction unit (35) obtains the heartbeat interval in both the first period T1 and the second period T2.

    A heartbeat fluctuation extracting unit (36) extracts a change in heartbeat interval (referred to as heartbeat fluctuation) obtained by the heartbeat interval extracting unit (35). The heartbeat fluctuation extraction unit (36) obtains the heartbeat fluctuation in both the first period T1 and the second period T2.

    Based on the heartbeat interval obtained by the heartbeat interval extraction unit (35) and the heartbeat fluctuation obtained by the heartbeat fluctuation extraction unit (36), the determination index extraction unit (37) Hereinafter, an index for determining the excessive intake (hereinafter also referred to as excessive drinking) of the alcoholic beverage of the subject (H) is obtained. The determination index extraction unit (37) obtains this index in both the first period T1 and the second period T2.

    Specifically, the determination index extraction unit (37) linearly interpolates the peristaltic interval data and converts it into equal time interval data in order to perform heartbeat fluctuation frequency analysis. Then, fast Fourier transform (FFT) is performed on the peristaltic interval data at equal time intervals, and a low frequency component LF (for example, 0.04 to 0.15 Hz) of fluctuation of the peristaltic interval and a high frequency component HF ( For example, 0.15 Hz or more) and these ratios (LF / HF) are obtained.

    The determination index extraction part (37) of this embodiment calculates | requires said HF in the 1st period T1 and a 2nd period as a parameter | index which determines overeating. Further, the determination index extraction unit (37) obtains the HF in the first period T1 and the second period as an index for determining excessive drinking. This HF serves as an index indicating the degree of parasympathetic nerve activity of the subject (H).

    Further, the determination index extraction unit (37) obtains heart rate (HR (reciprocal of heartbeat interval)) in the first period T1 and the second period T2 as an index for determining excessive drinking.

(Decision part)
A determination part (38) determines the excessive intake (overdrinking and overeating) of the subject's (H) food and drink based on the change of the index based on the heartbeat signal in the first period T1 and the second period T2. The determination unit (38) of the present embodiment includes an overeating determination unit (39) and an excessive drinking determination unit (40).

    The overeating determination unit (39) determines whether or not the subject (H) is excessively eating food that is a kind of food and drink. Specifically, the overeating determination unit (39) compares HF, which is an index for determining overeating, in the first period T1 and the second period T2, and based on the change in HF, the target person (H ) Overeating is determined (details will be described later).

    The excessive drinking determination unit (40) determines whether or not the subject (H) is excessively ingesting an alcoholic beverage that is a kind of food and drink. Specifically, the excessive drinking determination unit (40) compares HF and HR, which are indicators for determining excessive drinking, in the first period T1 and the second period T2, respectively, and changes in these HF and HR. Based on this, it is determined whether the subject person (H) drinks too much (details will be described later).

[Storage section]
The storage unit (41) is configured to be able to store each biological information detected by the biological information detection unit (32) and the determination result determined by the determination unit (38) as time series data. The data stored in the storage unit (41) can be output to the determination unit (38) and the communication unit (50).

<Communication Department>
A communication part (50) transmits the signal which shows the result determined by the determination part (38) to a terminal part (60). As shown in FIG. 1, the communication unit (50) is connected to the determination unit (30) via a cable. The communication unit (50) is configured to transmit the signal output from the determination unit (38) to the terminal unit (60) wirelessly (may be wired). The communication unit (50) is configured to transmit the signal output from the terminal unit (60) to the determination unit (38) of the determination unit (30).

<Terminal part>
The terminal unit (60) is configured to be able to receive the signal output from the communication unit (50). For example, the terminal unit (60) includes a smartphone, a tablet PC, a monitor with a touch panel, and the like. As shown in FIG. 2, the terminal unit (60) includes, for example, a display unit (61) configured with a liquid crystal monitor or the like, and an operation unit (62) configured with a touch panel or the like.

    When the determination unit (38) determines that the subject (H) is overeating, the display unit (61) displays a sign for warning the subject (H). In addition, when the determination unit (38) determines that the subject (H) is drinking too much, the display unit (61) displays a sign for tending to that effect to the subject (H).

    The operation unit (62) is configured to be able to input that the subject (H) has started eating and drinking. That is, the subject person (H) touches a predetermined icon or the like of the operation unit (62) when starting eating and drinking. Then, a signal indicating that the subject person (H) starts eating and drinking is output from the terminal unit (60) to the determination unit (30) via the communication unit (50). In synchronization with this timing, the determination unit (38) includes a period before the subject person (H) starts eating and drinking (first period T1) and a period after starting the eating and drinking (second period T2). It is divided.

-Operation-
The operation of the overdose warning system (S) will be described with reference to FIGS. In the overdose warning system (S), each overdose determination device (10) basically performs the same operation.

    As shown in FIG. 3, when the overdose warning system (S) is started, first, in the first period T1 before starting eating and drinking, the biological information of the subject (H) is detected, and this biological information is The information is gradually stored in the storage unit (41).

    Specifically, in the first period T1, the body motion signal of the subject (H) is gradually extracted (step St1), and then the heart rate interval of the subject (H) is based on the heart rate signal extracted from the body motion signal. Extracted (step St2). Next, in step St3, heart rate fluctuation is derived based on the heartbeat interval, and the HF is also obtained based on the heartbeat fluctuation. In step St3, the heart rate is also obtained based on this heartbeat interval. Accumulation of HF and heart rate data in the first period T1 is continuously performed until the subject (H) inputs to the operation unit (62) to start eating and drinking in step St4.

    In step St4, when the subject person (H) inputs to the operation unit (62) to start eating and drinking, the first period T1 is determined. For example, the HF and heart rate in the first period T1 are obtained. And it transfers to step St5 and the biometric information in 2nd period T2 is memorize | stored gradually in the memory | storage part (41).

    Specifically, in the second period T2, as in the first period T1, the body motion signal of the subject (H) is gradually extracted (step St5), and then the subject is based on the heartbeat signal extracted from the body motion signal. The heartbeat interval of (H) is extracted (step St6). Next, in step St7, heart rate fluctuation is derived based on the heartbeat interval, and the HF is also obtained based on the heartbeat fluctuation. In step St7, the heart rate is also obtained based on this heartbeat interval.

    Next, in step St8, it is determined whether or not the subject (H) is eating too much. That is, in Step St8, based on the change between the HF obtained in the first period T1 and the HF in the second period T2 obtained after Step St5 (that is, the period from the start of eating and drinking to the present). (H) overeating is determined.

    As shown in FIG. 4, when the period before the start of food intake (before the start of eating) and the period after the start of food intake (after the start of eating) are compared, the normal case (ie, the subject (H ) (When moderately ingested)) increases HF (ie, an indicator of parasympathetic activity). In contrast, when the subject's (H) satiety center does not function normally and the subject (H) consumes excessive food, a predetermined time (for example, 30 minutes) has elapsed since the start of food intake. However, HF may not increase. Moreover, HF may reduce conversely when a subject (H) takes in food excessively.

    Therefore, the overeating determination unit (39) of the present embodiment pays attention to this phenomenon, and determines that the subject (H) is overeating when the following first determination condition and second determination condition are satisfied, Otherwise, it is determined that the subject (H) is taking food moderately.

    The first determination condition is a predetermined time after the HF (also referred to as HF2) determined in the second period T2 is determined to be a meal start in step St4 with respect to HF (also referred to as HF1) determined in the first period T1. Even if ΔT (for example, 30 minutes) elapses, it does not increase by a predetermined value A1 or more. That is, it can be said that the first determination condition is that HF2−HF1 does not become equal to or greater than the predetermined value A1 even when ΔT has elapsed since the subject (H) started taking food. For example, the predetermined value A1 is set to 0.

    The second determination condition is that HF2 obtained in the second period T2 has decreased from the predetermined value A2 with respect to HF1 obtained in the first period T1. That is, it can be said that the second determination condition is that HF1-HF2 is greater than the predetermined value A2 in the second period T2.

    The overeating determination unit (39) of the present embodiment determines overeating when both the first determination condition and the second determination condition are satisfied, and determines that it is normal when both are not satisfied. However, the overeating determination unit (39) may determine that too much is eaten if only the first determination condition is satisfied, and may determine that it is normal if this is not satisfied. Further, the overeating determination unit (39) may determine that overeating is caused only when the second determination condition is satisfied, and may be determined as normal when this is not satisfied.

    When the overeating determination unit (39) determines that too much is eaten, a signal indicating that is received via the communication unit (50) to the terminal unit (60). Then, a sign indicating that the subject (H) is eating too much is displayed on the display unit (61) of the terminal unit (60) (step St9).

    Next, in step St10, it is determined whether or not the subject (H) is drinking too much. In other words, in step St10, based on the HF and heart rate obtained in the first period T1 and the changes in HF and heart rate in the second period T2 obtained after step St5, the drinking of the subject (H) Pass is determined.

    As shown in FIG. 5, when a period before the start of ingestion of alcoholic beverages (before the start of drinking) and a period after the start of ingestion of alcoholic beverages (after the start of drinking) are compared, a normal case (that is, the subject) When (H) moderately ingests an alcoholic beverage), HF (ie, an index indicating the activity of the parasympathetic nerve) increases. On the other hand, if the subject person (H) consumes an alcoholic beverage excessively, HF may not increase even if the predetermined time has elapsed, or HF may decrease.

    Further, as shown in FIG. 5, when comparing before the start of drinking and after the start of drinking, the heart rate of the subject (H) is hardly changed in a normal case. On the other hand, if the subject (H) consumes excessive alcoholic beverages, the heart rate of the subject (H) increases.

    Therefore, the overdrinking determination unit (40) of the present embodiment pays attention to this phenomenon, and if the following third determination condition, fourth determination condition, and fifth determination condition are satisfied, the subject person (H) overdose. If not, it is determined that the subject (H) is taking food appropriately.

    The third determination condition is that the heart rate (HR2) obtained in the second period T2 is greater than the predetermined value A3 with respect to the heart rate (HR1) obtained in the first period T1. That is, it can be said that the third determination condition is that HR2-HR1 is larger than the predetermined value A3 in the second period T2.

    The fourth determination condition is that HF2 obtained in the second period T2 is increased by a predetermined value A4 or more even after a predetermined time ΔT has elapsed since the meal start is determined in step St4 with respect to HF1 obtained in the first period T1. Is not to. That is, it can be said that the fourth determination condition is that HF2-HF1 does not become equal to or greater than the predetermined value A4 even when ΔT has elapsed since the subject (H) started taking food. The predetermined value A4 is set to 0, for example.

    The fifth determination condition is that HF2 obtained in the second period T2 has decreased from the predetermined value A5 with respect to HF1 obtained in the first period T1. That is, it can be said that the fifth determination condition is that HF1-HF2 is greater than the predetermined value A5 in the second period T2.

    The excessive drinking determination unit (40) of the present embodiment determines that excessive drinking occurs when all of the third determination condition, the fourth determination condition, and the fifth determination condition are satisfied, and determines that it is normal when these are not satisfied. However, the excessive drinking determination unit (40) may determine that excessive drinking occurs when the third determination condition and the fourth determination condition are satisfied, and may determine normal when these are not satisfied. Further, the excessive drinking determination unit (40) may determine that the excessive drinking occurs when the third determination condition and the fifth determination condition are satisfied, and may determine that the drinking is normal when these are not satisfied. The overdrinking determination unit (40) may determine that overdrinking occurs when only the third determination condition is satisfied, and may determine normal when the third determination condition is not satisfied. That is, the third determination condition using the heart rate of the subject (H) is a necessary condition for determining whether the subject (H) is drinking too much. Thereby, a judgment part (38) can discriminate | determine reliably whether a subject (H) is eating too much or drinking too much.

    If the overdrinking determination unit (40) determines that it is excessive drinking, a signal indicating that is received by the terminal unit (60) via the communication unit (50). Then, a sign indicating that the subject (H) is drinking too much is displayed on the display unit (61) of the terminal unit (60) (step St11).

-Effect of the embodiment-
In the above embodiment, before and after the subject person (H) starts taking food and drink, the index (HF or HR) based on the heart rate signal of the subject person (H) is obtained, and based on changes in these indices. The subject (H) is judged to be overdose of food and drink. Therefore, as in the conventional example, it is possible to easily determine the excessive intake of food and drink without inputting the characteristics of the subject, the type and amount of the consumed food and drink, and the like.

    In addition, after the subject person (H) starts ingesting food and drink, it can be determined whether or not the subject person (H) is ingesting food and drink excessively during the intake of the food and drink. Therefore, after it is determined that there is an excessive intake, eating and drinking of the subject (H) can be quickly terminated, and excessive eating and excessive drinking can be minimized.

    In addition, changes in HF and HR before and after the start of intake of food and drink are values that take into account individual differences of the subject (H). Therefore, it can also suppress that an error arises in the judgment result of the excessive intake of food and drink with individual difference of a subject person (H).

    The overeating determination unit (39) can easily and quickly determine overeating of the subject (H) by using the change in HF that is an index of the parasympathetic nerve activity of the subject (H). The overdrinking determination unit (40) can easily and quickly determine whether the subject (H) is overdose by using the change in HF, which is an index of the parasympathetic nerve activity of the subject (H).

    Furthermore, unlike the overeating determination unit (39), the overdrinking determination unit (40) uses the change in the heart rate of the subject (H) as an index for determining overdose. It is possible to reliably discriminate whether it is overeating or overeating, and it is possible to indicate both overdrinking and overeating warnings on the display unit (61).

    The sign indicating overeating is displayed on the display (61), so that the subject (H) and the people around him can quickly grasp that the subject (H) is eating too much food. . Therefore, it is possible to prevent the subject (H) from taking excessive food in the dining at home, which can be useful for preventing obesity and health management of the subject (H).

    By displaying a sign indicating excessive drinking on the display (61), the subject (H) and the people around him can quickly grasp that the subject (H) is taking excessive alcoholic beverages. it can. Therefore, it is possible to prevent the subject (H) from excessively drinking alcoholic beverages in the dining at home, which can be useful for prevention of hangover and hangover of the subject (H), health management, and the like.

    In the above embodiment, since the pressure sensing tube (20) on which the body movement of the subject (H) acts is provided on the seat (C1) of the chair (C), the subject (H) seated on the seat (C1) ) Can be easily determined.

-Modification of Embodiment 1-
About the said Embodiment 1, it is good also as a structure of the following modifications.

<Modification 1>
Modification 1 shown in FIG. 6 omits the excessive drinking determination unit (40) of the determination unit (38) of the excessive intake determination device (10) in the excessive intake determination system (S) according to the above-described embodiment. is there. That is, in the excessive intake determination device (10) of the first modification, only the overeating determination of the subject (H) is performed. The determination method of the subject (H) overeating is the same as in the above embodiment. When it is determined that the subject person (H) eats too much, a sign indicating that is displayed on the display unit (61). Other functions and effects are the same as in the above embodiment.

<Modification 2>
Modification 2 shown in FIG. 7 is obtained by omitting the overeating determination unit (39) of the determination unit (38) of the overdose determination device (10) in the overdose determination system (S) according to the embodiment described above. is there. That is, in the excessive intake determination device (10) of the second modification, only the excessive drinking determination of the subject (H) is performed. The determination method of the subject person (H) overdrinking may be the same as in the above embodiment. In addition, in Modification 2, the heart rate HR may not be used as a determination index, and if one or both of the above-described determination condition 4 and determination condition 5 is satisfied, it may be determined that drinking is excessive. This is because in Modification 2, only the overdrinking determination is performed, and it is not necessary to determine the overeating determination and the excessive drinking determination. When it is determined that the subject drinks too much, a sign indicating that is displayed on the display unit (61). Other functions and effects are the same as in the above embodiment.

<< Other Embodiments >>
In the said embodiment and each modification, HF value is used as a parameter | index for determining whether it eats too much or drinks too much. However, instead of this HF value, SDNN (Standard Deviation of The NN (RR) Interval) that serves as an index indicating the activity of the parasympathetic nerve activity of the subject (H) may be used. SDNN is a standard deviation value of a heartbeat interval in a predetermined period, and is a value approximately approximate to the above-described sum of HF and LF (HF + LF). Therefore, in place of the HF, this SDNN can be used as a determination index indicating that the subject (H) is eating too much or drinking too much. That is, as shown in FIGS. 4 and 5, the behavior of the change in SDNN during normal and excessive intake is almost the same as that of HF. Therefore, in each determination of the overeating determination unit (39) and the overdose determination unit (40) according to the above embodiment, by using SDNN instead of HF, the subject (H) is overeating and overdrinking similarly. Can be determined.

    In the embodiment and each modification, the pressure-sensitive tube (20) is provided on the seat (C1) of the chair (C). However, for example, the pressure sensitive body (21) of the pressure sensitive tube (20) may be provided in another seat (C1) such as a cushion or a carpet. Moreover, you may arrange | position the pressure-sensitive part main body (21) of this pressure-sensitive tube (20) inside a seat part (C1). As a result, the pressure sensitive body (21) is configured so that the subject (H) cannot be seen by the subject (H). For example, when the subject (H) is nervous, the biological body detected by the pressure sensitive tube (20) It is possible to prevent an error from occurring in the signal.

    In the above embodiment and each modification, the overdose warning system (S) is applied to dining in a general household. However, the overdose warning system (S) may be applied to restaurants such as restaurants, sushi restaurants, and pubs. In this case, it is preferable that the display unit (61) that displays a sign warning that the subject person (H) is overeating or drinking too much is arranged so that it can be confirmed not only by the subject person (H) but also by the store clerk. . Thereby, the store clerk can perform customer service accompanying the person (H) taking into account excessive eating and drinking.

    As described above, the present invention is useful for an overdose determination device and an overdose warning device including the same.

S Overdose warning system (overdose warning device)
10 Overdose determination device
20 Pressure sensitive tube
31 Microphone (pressure receiving part)
32 Biological information detector
38 Judgment part
39 Eating too much
40 Overdose determination unit
61 Display
C1 seat
H Target audience

Claims (8)

An overdose determination device,
A biological information detector (32) for detecting a heartbeat signal of the subject (H) before and after the start of intake of food and drink by the subject (H);
Based on the change in the index obtained from the heartbeat signal detected by the biological information detection unit (32) before and after the start of intake of the food and drink, the subject (H) has excessively consumed the food and drink. An overdose determination device comprising: a determination unit (38) for determining whether or not there is any. In claim 1,
The determination unit (38) includes an overeating determination unit (39) that determines an excessive intake of food that is a kind of the food and drink. In claim 2,
The overeating determination unit (39) determines that the parasympathetic nerve activity of the subject (H) obtained from the heartbeat signal detected by the biological information detection unit (32) before the start of food intake is the start of food intake. A first determination condition indicating that it does not increase even after a predetermined time has elapsed; and a second determination condition indicating that the parasympathetic nerve activity of the subject (H) before the start of food intake has decreased after the start of food intake An overdose determining device configured to determine that the subject (H) is excessively ingesting the food when either or both of the determination conditions are satisfied. In any one of Claims 1 thru | or 3,
The determination unit (38) includes an excessive drinking determination unit (40) for determining an excessive intake of an alcoholic beverage that is a kind of the food and drink. In claim 4,
The overdrinking determination unit (40) is configured such that at least the heart rate of the subject (H) obtained from the heartbeat signal detected by the biological information detection unit (32) before the start of ingestion of the alcoholic beverage is the alcoholic beverage. An overdose determination device configured to determine that the subject (H) is taking excessive drinks when a third determination condition indicating an increase after the start of intake is established . In claim 5,
The excessive drinking determination unit (40) has the parasympathetic nerve activity obtained from the heartbeat signal detected by the biological information detection unit (32) before the start of ingestion of the alcoholic beverage and the third determination condition is satisfied. The fourth determination condition indicating that the predetermined time does not increase after the start of ingestion of the alcoholic beverage and the parasympathetic nerve activity of the subject (H) before the start of ingestion of the alcoholic beverage is the start of ingestion of the alcoholic beverage When one or both of the fifth determination condition indicating that it has been reduced later is established, the subject person (H) is configured to determine that the alcoholic beverage is excessively consumed. An overdose determination device as a feature. In any one of Claims 1 thru | or 6,
A pressure-sensitive tube (20) provided in a seat (C1) on which the subject (H) is seated, on which the body movement of the subject (H) acts;
A pressure receiving portion (31) that detects a change in the internal pressure of the pressure-sensitive tube (20) and outputs a signal corresponding to the change in the internal pressure;
The biological information detection unit (32) is configured to detect a heartbeat signal of a subject (H) based on a signal output from the pressure receiving unit (31). An overdose warning device,
An overdose determination device (10) according to any one of claims 1 to 7;
When it is determined by the overdose determination device (10) that the subject (H) is excessively eating the food or drink, a display unit (61) that displays a warning sign is provided. Overdose warning device characterized by.

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