Body water measuring device and system

Abstract

To provide a body water volume measuring device capable of warning in advance a possibility for a person to be measured to have heatstroke by measuring a body water volume of the person to be measured, and a system.SOLUTION: A body water volume measuring device 1 includes: a body water volume calculation part 34 for calculating a body water volume on the basis of impedance calculated by causing high frequency weak current to flow in a person to be measured via each electrode 20 fitted to the arm of the person to be measured; and a warning output part 38 which issues a warning in the case that the ratio of the body water volume measured this time with respect to a measurement result of the previous body water volume stored to a storage part 40 and corresponding to identification information on the person to be measured is smaller than a prescribed ratio when the identification information on the person to be measured is received by a reception part 31 and the body water volume of the person to be measured is calculated by the body water volume calculation part 34.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a body water measuring device and system. [Background technology]

[0002] Various body water content measuring devices for measuring the amount of water in the human body have been known. For example, the device disclosed in Patent Document 1 is known. The conventional body water content measuring device disclosed in Patent Document 1 includes a display / operation unit held by the subject and a weight measurement unit on which the subject stands. When the subject stands on the weight measurement unit and touches the soles of their feet to the electrodes of the weight measurement unit while grasping the electrodes of the display / operation unit with their hands, a voltage of 50 kHz is applied to the subject. The current value at this time is measured to calculate the subject's bioimpedance. Here, since human muscle and body water have a higher electrical resistance and allow current to flow more easily than fat, assuming other tissue compositions remain unchanged, the lower the calculated bioimpedance value, the greater the body water content. Conversely, the higher the bioimpedance value, the less body water content there is.

[0003] In the body water content measuring device disclosed in Patent Document 1 and the like, when measuring the body water content of an athlete during or after playing sports, for example, if the subject's bioimpedance is calculated while wearing sweat-soaked clothing, an error in the measurement of body water content may occur due to the sweat-soaked clothing sticking to the body surface. To prevent such measurement errors, Patent Documents 2 and 3 disclose devices that measure body water content by wrapping a sheet with electrodes around the subject's arm. Patent Document 4 discloses a technique for measuring body fat percentage and body water percentage by inserting the subject's arm into a tubular member with electrodes inside. Patent Document 5 discloses a technique for calculating overall impedance by measuring the impedance of the right arm and right leg. However, when measuring the body water content of multiple subjects periodically (e.g., several times a day), there is a problem in that the actions of wrapping a sheet with electrodes around the subject's arm or inserting the subject's arm into a tubular member with electrodes inside are cumbersome. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-205817 [Patent Document 2] Japanese Patent Application Publication No. 06-114023 [Patent Document 3] Japanese Patent Application Publication No. 10-071130 [Patent Document 4] Japanese Patent Application Laid-Open No. 2005-137654 [Patent Document 5] Japanese Patent Application Publication No. 2019-504747 Summary of the Invention [Problem to be solved by the invention]

[0005] The inventors of the present invention have discovered that by periodically measuring the body water content of a person being measured, it is possible to predict whether the person may suffer from heat stroke or other conditions, even before they engage in sports; however, this finding was not previously known.

[0006] The present invention has been made in consideration of these points, and aims to provide a body water content measuring device and system that can warn the subject in advance of the possibility of heat stroke, dehydration, etc. [Means for solving the problem]

[0007] The body water content measuring device of the present invention comprises: A pair of electrodes to be attached to the subject's arms, a reception unit that receives identification information of the subject; a body water content calculation unit that calculates body water content based on impedance calculated by passing a high-frequency weak current through the electrodes attached to the subject's arms; a storage unit that stores the body water mass calculated by the body water mass calculation unit in association with the subject's identification information; a warning output unit that receives the identification information of the subject by the receiving unit and, when the body water mass calculation unit calculates the body water mass of the subject, issues a warning if the ratio of the body water mass measured this time to the result of the previous body water mass measurement stored in the memory unit, which corresponds to the identification information of the subject received by the receiving unit, is smaller than a predetermined ratio; The present invention is characterized by the following features.

[0008] The body water content measuring device of the present invention comprises: A pair of electrodes to be attached to the subject's arms, a reception unit that receives identification information of the subject; a body water content calculation unit that calculates body water content based on impedance calculated by passing a high-frequency weak current through the electrodes attached to the subject's arms; a storage unit that stores the body water mass calculated by the body water mass calculation unit in association with the subject's identification information; a warning output unit that, when the receiving unit receives the identification information of the subject and the body water mass of the subject is calculated by the body water mass calculation unit, issues a warning if the ratio of the currently measured body water mass to the ideal body water mass value stored in the memory unit, which corresponds to the identification information of the subject received by the receiving unit, is smaller than a predetermined ratio; The present invention is characterized by the following.

[0009] The body water content measuring device of the present invention comprises: A pair of electrodes to be attached to the subject's arms, a reception unit that receives identification information of the subject; a body water content calculation unit that calculates body water content based on impedance calculated by passing a high-frequency weak current through the electrodes attached to the subject's arms; a storage unit that stores the body water mass calculated by the body water mass calculation unit in association with the subject's identification information; a warning output unit that receives the identification information of the subject by the receiving unit and, when the body water mass calculation unit calculates the body water mass of the subject, issues a warning if the ratio of the body water mass measured this time to the body water mass measurement results of the most recent predetermined number of times or the body water mass measurement results within a predetermined period from the time of measurement, which corresponds to the identification information of the subject received by the receiving unit and are stored in the memory unit, is smaller than a predetermined ratio; The present invention is characterized by the following.

[0010] The system of the present invention comprises: a plurality of body water content measuring devices; a server device communicably connected to each of the body water measuring devices; Equipped with The body water content measuring device includes: a reception unit that receives identification information of the subject; a body water content calculation unit that calculates the body water content of the subject; a storage unit that stores the body water mass calculated by the body water mass calculation unit in association with the subject's identification information; It has When the receiving unit receives the identification information of the person being measured and the body water mass calculation unit calculates the body water mass of the person being measured, information relating to the result of the previous body water mass measurement stored in the memory unit or the ratio of the body water mass measured this time to an ideal value for body water, which information corresponds to the identification information of the person being measured received by the receiving unit, is transmitted from the body water mass measuring device to the server device, The server device a model generation means for generating a trained model by machine learning using training data including the ratio and measurement environment information transmitted from the body water measuring device, inputting the measurement environment information and outputting whether or not a warning has been issued; a receiving means for receiving measurement environment information or weather information; A calculation means for calculating whether or not a warning is issued by inputting the measurement environment information or weather information received by the reception means into the trained model generated by the model generation means; a transmitting means for transmitting an instruction to issue a warning to the body water measuring device when the calculating means calculates that a warning should be issued; The present invention is characterized by having the following. [Effects of the Invention]

[0011] The body water content measuring device and system of the present invention can warn the subject in advance of the possibility of heat stroke, dehydration, and the like. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a schematic configuration diagram illustrating a system configuration according to an embodiment of the present invention; [Figure 2] FIG. 2 is a diagram showing the configuration of a body water content measuring device in the system shown in FIG. [Figure 3] FIG. 3 is a control block diagram of the main body of the body water content measuring device shown in FIG. 2. [Figure 4] 3 is a table showing measurement data for each subject stored in a storage unit of the body water content measuring device shown in FIG. 2. [Figure 5] 3 is a diagram showing a measurement screen displayed on a display unit of the body water content measuring device shown in FIG. 2. FIG. [Figure 6] 2 is a diagram schematically illustrating a configuration for calculating whether or not a warning should be issued by a server device in the system shown in FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] A body water content measuring device according to an embodiment of the present invention and a system including such a body water content measuring device will now be described with reference to the drawings. Fig. 1 is a block diagram showing the general configuration of a system according to this embodiment, and Figs. 2 to 5 are diagrams showing the body water content measuring device according to this embodiment. Fig. 6 is a block diagram showing the general configuration of a server device in the system shown in Fig. 1 for calculating whether or not a warning should be issued.

[0014] First, the overall configuration of the system according to this embodiment will be described with reference to Fig. 1. As shown in Fig. 1, the system includes a body water content measuring device 1 and a server device 50. The body water content measuring device 1 is communicably connected to the server device 50 via a network line 60 such as the Internet. While Fig. 1 shows a configuration in which one body water content measuring device 1 is communicably connected to the server device 50, in reality, a plurality of body water content measuring devices 1 owned by different people are each communicably connected to one server device 50.

[0015] The body water content measuring device 1 includes a main body 10 and a pair of electrodes 20 to be attached to one arm of the subject. As shown in FIG. 2, each electrode 20 is connected to the main body 10 by a cord 22. Each electrode 20 is in the shape of a clamp that can be attached to the wrist or elbow of the subject, and a high-frequency weak current can be passed from the electrode 20 to the subject's arm to which the electrode 20 is attached. One electrode 20 of the pair of electrodes 20 is attached to the wrist of one of the subject's arms, and the other electrode 20 is attached to the elbow of the same arm.

[0016] 2 and 3, the main body 10 of the body water content measuring device 1 is provided with a control unit 30, a reception unit 31, a display unit 32, an input unit 33, a body water content calculation unit 34, a determination unit 36, a warning output unit 38, a memory unit 40, and a communication unit 42. The control unit 30 is connected to the reception unit 31, the display unit 32, the input unit 33, the body water content calculation unit 34, the determination unit 36, the warning output unit 38, the memory unit 40, and the communication unit 42, and controls the reception unit 31, the display unit 32, the input unit 33, the body water content calculation unit 34, the determination unit 36, the warning output unit 38, the memory unit 40, and the communication unit 42. The control unit 30 is, for example, a CPU (Central Processing Unit) or the like.

[0017] The receiving unit 31 receives various information from outside the body water content measuring device 1. Details of the information received by the receiving unit 31 will be described later. The display unit 32 displays various information, such as the body water content of the person being measured, calculated by the body water content calculation unit 34. Details of the display content of the display unit 32 will be described later. The input unit 33 includes various buttons, such as a numeric keypad and a measurement start button, and is capable of inputting various information. The information input by the input unit 33 is received by the receiving unit 31. For example, when measuring the body water content of the person being measured, the operator of the body water content measuring device 1 can input identification information (e.g., an identification number) of the person being measured using the input unit 33, and the identification information of the person being measured input by the input unit 33 is received by the receiving unit 31. The person being measured can also input measurement environment information, such as temperature and humidity, using the input unit 33, and the measurement environment information input by the input unit 33 is received by the receiving unit 31.

[0018] The body water content calculation unit 34 measures the body water content based on the impedance calculated by passing a high-frequency weak current through the electrodes 20 attached to the subject's arms. The determination unit 36 ​​receives the subject's identification information via the reception unit 31 and determines whether the subject's body water content is lower than normal when the body water content calculation unit 34 calculates the subject's body water content. The determination method used by the determination unit 36 ​​will be described in detail later. The warning output unit 38 outputs a warning when the determination unit 36 ​​determines that the subject's body water content is lower than normal. The warning output by the warning output unit 38 is displayed as a warning message on the display unit 32 or is given as an audio warning.

[0019] The memory unit 40 stores the body water content calculated by the body water content calculation unit 34 in association with the subject's identification information. Details of the contents stored in the memory unit 40 will be described with reference to FIG. 4. As shown in FIG. 4, the memory unit 40 stores the body water content measurement data for each subject in chronological order. Specifically, the measurement data for each subject's gender, name, identification number, height, weight, and body water content are stored in the memory unit 40 for each subject. The subject's gender, name, height, and weight can be input or changed using the input unit 33 provided on the main body 10 of the body water measuring device 1. When information about a new subject is input using the input unit 33, an identification number corresponding to the new subject is issued.

[0020] The communication unit 42 is, for example, a communication interface, and is configured to send and receive signals to and from an external device such as a server device 50.

[0021] Next, the operation of measuring the body water content of a subject using the body water content measuring device 1 described above will be described.

[0022] First, as shown in FIG. 1, the person measuring attaches a pair of electrodes 20 of the body water measuring device 1 to the wrist and elbow of one arm of the person being measured. Next, the person measuring inputs the person's identification information (specifically, name, identification number, etc.) using the input unit 33. The person's identification information input by the input unit 33 is accepted by the accepting unit 31. When the person measuring presses the measurement start button on the input unit 33, a voltage with a frequency of 50 kHz is applied to the person being measured, and a high-frequency weak current flows between the wrist and elbow of one arm of the person being measured via the electrodes 20. The current value at this time is measured to calculate the person's bioimpedance (the ratio of voltage to current). The bioimpedance Z is calculated using the following formula: Z=V(voltage) / I(current) Then, taking advantage of the fact that the distance between the wrist and elbow of one of the subject's arms, to which each electrode 20 is attached, is proportional to the subject's height, the body water calculation unit 34 measures the body water content based on the calculated impedance and the subject's height L stored in the memory unit 40. Specifically, the body water content A is calculated using the following formula: A = (L × a) 2 / Z×b a: arm constant (a value based on the structure of the human body, which is constant regardless of the person being measured) b: Correction constant (a value calculated from samples of multiple subjects to correct for the characteristics unique to this device)

[0023] Once the subject's body water content is calculated by the body water content calculation unit 34, the measurement results, including the calculated body water content, are displayed on the display unit 32. The measurement results displayed on the display unit 32 are shown in FIG. 5. As shown in FIG. 5, the display unit 32 displays the subject's name, sex, height, weight, and measurement date and time, as well as the measured body water content (51.8 kg), ideal body water content (52.5 kg), basal metabolic rate, and average impedance as measurement results. The ideal body water content is linked to the subject's identification information and pre-stored in the memory unit 40. The ideal body water content is calculated by multiplying the subject's ideal lean body weight (weight excluding the body fat percentage) by 0.73, calculated from the subject's height and weight. If the subject's height and weight are changed by input via the input unit 33, the ideal body water content is automatically changed. The basal metabolic rate is the amount of calories required to maintain body temperature at a predetermined temperature (e.g., 36°C), and is calculated using a predetermined formula based on the body water content calculated by the body water content calculation unit 34. The average impedance is the average impedance calculated by passing a high-frequency weak current through the subject when the subject's body water content is calculated by the body water content calculation unit 34. The display unit 32 also displays the subject's body water percentage and body water sufficiency. The subject's body water percentage is the ratio of the body water content calculated by the body water content calculation unit 34 to the subject's weight stored in the memory unit 40, and the body water sufficiency is the ratio of the body water content calculated by the body water content calculation unit 34 to the ideal value for body water content.

[0024] As shown in FIG. 5, the lower area of ​​the display unit 32 displays a graph of the results of several past body water measurements in chronological order. The ideal body water value is displayed as line A, and 105% and 95% of the ideal body water value are displayed as lines B and C, respectively. Therefore, if the subject's current body water measurement is plotted above line B or below line C on the graph displayed on the display unit 32, it becomes clear at a glance from the graph that the body water calculated by the body water calculation unit 34 deviates significantly from the ideal value. If the subject's height and weight are changed by input via the input unit 33, and the ideal body water value is automatically changed, the position of line A displayed on the display unit 32 is also changed. However, this embodiment is not limited to this example. Instead of displaying the ideal value of body water mass by line A, the average value of body water mass for a predetermined number of most recent measurements (e.g., five measurements) stored in memory unit 40 may be displayed by line A, with 105% and 95% of this average value displayed by lines B and C. As yet another example, the average value of body water mass for a predetermined period (e.g., within one week or one month) from the time of measurement stored in memory unit 40 may be displayed by line A, with 105% and 95% of this average value displayed by lines B and C.

[0025] The determination unit 36 ​​determines whether the subject's body water mass calculated by the body water mass calculation unit 34 is lower than normal. Specifically, when the receiving unit 31 receives the subject's identification information and the body water mass calculation unit 34 calculates the subject's body water mass, the determination unit 36 ​​determines that the subject's body water mass calculated by the body water mass calculation unit 34 is lower than normal if the ratio of the currently measured body water mass to the previous body water mass measurement result stored in the memory unit 40, which corresponds to the subject's identification information received by the receiving unit 31, is smaller than a predetermined ratio (e.g., 95%). Alternatively, in another aspect, the determination unit 36 ​​may determine that the subject's body water mass calculated by the body water mass calculation unit 34 is lower than normal if the ratio of the currently measured body water mass to the ideal body water value stored in the memory unit 40, which corresponds to the subject's identification information received by the receiving unit 31, is smaller than a predetermined ratio (e.g., 95%).

[0026] In yet another embodiment, the determination unit 36 ​​may determine that the body water mass of the subject calculated by the body water mass calculation unit 34 is lower than usual if the ratio of the body water mass measured this time to the body water mass measurement results (e.g., average value) of a predetermined number of most recent times (e.g., five times) stored in the memory unit 40 corresponding to the subject's identification information received by the reception unit 31 is smaller than a predetermined ratio (e.g., 95%). Specifically, when the past body water mass measurement data is as shown in Figure 4, the average body water mass of Taro Yamada in the measurement results of a predetermined number of most recent times (e.g., five times) stored in the memory unit 40 is 52.76 kg. In this case, when a new measurement of Yamada Taro's body water mass is performed and Yamada Taro's identification information (name or identification number) is received by the reception unit 31, if the body water mass calculated by the body water mass calculation unit 34 is less than 50.122 kg (= 52.76 kg × 0.95), the judgment unit 36 ​​may determine that the body water mass of the person being measured calculated by the body water mass calculation unit 34 is lower than usual.

[0027] In yet another aspect, if the ratio of the body water content measured this time to the body water content measurement results (e.g., average value) for a predetermined period (e.g., within one week or one month) from the time of measurement stored in the memory unit 40, which corresponds to the identification information of the subject received by the receiving unit 31, is smaller than a predetermined ratio (e.g., 95%), the judgment unit 36 ​​may determine that the body water content of the subject calculated by the body water content calculation unit 34 is lower than normal. Specifically, if the average body water mass of Yamada Taro's measurement results within one week from the time of measurement stored in memory unit 40 is 52.5 kg, and when a new measurement of Yamada Taro's body water mass is performed and Yamada Taro's identification information (name or identification number) is accepted by acceptance unit 31, and the body water mass calculated by body water mass calculation unit 34 is less than 49.875 kg (= 52.5 kg × 0.95), judgment unit 36 ​​may determine that the body water mass of the person being measured calculated by body water mass calculation unit 34 is lower than usual.

[0028] If the judgment unit 36 ​​determines that the body water content of the person being measured calculated by the body water content calculation unit 34 is lower than normal, a warning is output by the warning output unit 38, and the output warning is displayed on the display unit 32 as a warning message or an audio warning is issued.

[0029] The communication unit 42 transmits the body water mass calculated by the body water mass calculation unit 34, the basal metabolic rate, the previous body water mass measurement result, the ratio of the currently measured body water mass to the ideal value, etc., linked to the subject's identification information to the server device 50. The server device 50 stores this information linked to the subject's identification information in a memory unit (not shown). In this case, the server device 50 manages the body water mass and other information using identification information such as an identification number rather than the subject's name, thereby preventing the body water mass and other information from being identified from the subject's name.

[0030] Furthermore, if the subject's body water mass calculated by body water mass calculation section 34 is less than a predetermined percentage of the ideal value, determination section 36 will plot the subject's currently measured body water mass in the area below line C in the graph displayed in the lower area of ​​display section 32, as shown in Figure 5. This allows the subject to recognize, by looking at the graph displayed on display section 32, in addition to the warning output by warning output section 38, that the subject's body water mass calculated by body water mass calculation section 34 has significantly decreased compared to the ideal value.

[0031] The present inventors have discovered that by periodically measuring the subject's body water content, it is possible to predict the possibility of heatstroke, dehydration, and other symptoms even before the subject engages in sports. Specifically, the subject's body water content decreases during and after sports due to sweating and other factors. However, the subject's physical condition and the surrounding environment (e.g., temperature and humidity) may also cause the subject's body water content to decrease even before sports. In such cases, if the subject engages in sports, there is a high possibility of experiencing problems such as heatstroke or dehydration. In response to this, in this embodiment, when the subject's body water content is measured using the body water measuring device 1, the subject's identification information is input via the input unit 33, and the identification information is accepted by the accepting unit 31. If the ratio of the currently measured body water content to the previous body water content measurement result or ideal body water content value stored in the memory unit 40, which corresponds to the subject's identification information accepted by the accepting unit 31, is smaller than a predetermined ratio, the warning output unit 38 issues a warning. As a result, even before the subject plays sports, if the subject's body water content is low, the warning output unit 38 issues a warning. This allows the subject to take measures such as canceling the sport, shortening the time spent playing, or rehydrating frequently, thereby preventing problems such as heatstroke and dehydration. Furthermore, the body water content measuring device 1 of this embodiment can measure the subject's body water content simply by attaching a pair of electrodes 20 to the subject's arm, which has the advantage that the measurement procedure is not complicated even when the subject's body water content is measured regularly. Therefore, the body water content measuring device 1 of this embodiment can easily measure the body water content of many students in school club activities, etc. In particular, the body water content of the subject can be measured flexibly regardless of age or gender. Furthermore, it can also accommodate children, whose height tends to grow significantly in a short period of time, by periodically changing the height value stored in the memory unit 40 using the input unit 33.Furthermore, in the past, when calculating the subject's basal metabolic rate, the basal metabolic rate per body weight differed depending on gender and age, and it was necessary to check and calculate each value based on the nutritional requirements for Japanese people, which are published every five years. However, since the basal metabolic rate per amount of body water is constant, the body water meter 1 can easily calculate the basal metabolic rate.

[0032] The amount of energy a person needs per day is usually expressed as a multiple of their basal metabolic rate (also known as a daily activity index). Therefore, for example, the basal metabolic rate can be used to calculate energy sufficiency by referring to the amount of energy consumed through exercise measured by other wearable devices or the calorie intake of the person's food. Conversely, by determining the estimated basal metabolic rate from the amount of body water based on the standard daily activity level, it is possible to calculate the amount of energy that should be ingested or the amount of energy that should be restricted when dieting. Furthermore, understanding the equivalent of the basal metabolic rate can be used for nutritional guidance, etc.

[0033] As described above, in the body water content measuring device 1 of this embodiment, the memory unit 40 pre-stores the height corresponding to the identification information of the person being measured, and the body water content calculation unit 34 calculates the body water content based on the impedance and the height corresponding to the identification information of the person being measured received by the reception unit 31. In this case, by using information related to the person's height, the body water content calculation unit 34 can more accurately calculate the person's body water content. In this case, it is not necessary to frequently input the person's height into the body water content measuring device 1; simply inputting a rough estimate of the person's height into the body water content measuring device 1 will allow the body water content measuring device 1 to function satisfactorily.

[0034] As described above, the body water content measuring device 1 of this embodiment is also provided with a display unit 32 that displays at least a portion of the body water content stored in the memory unit 40 and the body water content measured this time. In this case, the person taking the measurement can compare the body water content in past measurement data with the body water content measured this time.

[0035] Furthermore, as described above, in the body water content measuring device 1 of this embodiment, the display unit 32 displays, as body water sufficiency, the ratio of the currently measured body water content to the ideal body water content stored in the memory unit 40, which corresponds to the subject's identification information received by the receiving unit 31. In this case, the subject can see at a glance how much the currently measured body water content deviates from the ideal value.

[0036] Next, the configuration of server device 50 will be described with reference to Fig. 6. As shown in Fig. 6, server device 50 includes model generation means 52 that generates a trained model 54 based on training data 51, reception means 56 that receives measurement environment information from body water measuring device 1 and weather information from a system 70 of a weather information provider, calculation means 58 that calculates whether or not a warning should be issued by inputting the measurement environment information and / or weather information received by reception means 56 into trained model 54 generated by model generation means 52, and transmission means 59 that transmits an instruction to body water measuring device 1 to issue a warning when calculation means 58 calculates that a warning should be issued.

[0037] In the server device 50, a trained model 54 is generated in advance by a model generation means 52. The model generation means 52 uses training data 51, including the result of the previous body water measurement or the ratio of the currently measured body water mass to the ideal body water mass, and measurement environment information (specifically, at least one of temperature and humidity, or both), transmitted from the body water measuring device 1, to input environmental measurement information and meteorological information (specifically, at least one of temperature and humidity, or both), and generate a trained model 54 by machine learning. The trained model 54 outputs whether or not a warning is to be issued. Regarding whether or not a warning is to be issued, a warning is issued if the result of the previous body water measurement or the ratio of the currently measured body water mass to the ideal body water mass is smaller than a predetermined ratio. The training data 51 may also include information directly input to the server device 50 by a computer or the like, in addition to information transmitted from the body water measuring device 1.

[0038] The model generation means 52 is configured, for example, by a neural network. Such a neural network has an input layer to which training data 51 including the result of the previous body water measurement or the ratio of the currently measured body water mass to the ideal body water mass value, and measurement environment information transmitted from the body water measuring device 1 is input; an output layer that outputs a trained model 54; and an intermediate layer in which parameters are trained using the training data 51. In such a neural network, when the training data 51 is input to the input layer, it is calculated in the intermediate layer, and the trained model 54 is output by the output layer. Any known neural network can be used as such. The trained model 54 generated by the model generation means 52 is stored in the memory unit of the server device 50.

[0039] The receiving means 56 receives measurement environment information from the body water content measuring device 1 and weather information from the weather information provider's system 70. The calculation means 58 inputs the measurement environment information and weather information (specifically, at least one or both of temperature and humidity) received by the receiving means 56 into the trained model 54 generated by the model generation means 52, thereby calculating whether or not to issue a warning. The transmission means 59 then transmits an instruction to the body water content measuring device 1 to issue a warning when the calculation means 58 calculates that a warning should be issued. This makes it possible to display a warning message on the display unit 32 of the body water content measuring device 1 or to issue a warning by voice. By using such a server device 50, a warning can be issued based on the measurement environment information and weather information, even without actually measuring the body water content of the subject using the body water content measuring device 1. This allows the subject to take measures such as canceling sports activities, shortening the sports activity time, or frequently hydrating, thereby preventing problems such as heatstroke and dehydration from occurring.

[0040] Furthermore, in the system of this embodiment, the receiving unit 31 of the body water content measuring instrument 1 receives measurement environment information, and the measurement environment information received by the receiving unit 31 is transmitted from the body water content measuring instrument 1 to the server device 50. In this case, the calculation means 58 of the server device 50 can calculate whether or not to issue a warning based on the measurement environment information transmitted from the body water content measuring instrument 1.

[0041] Furthermore, in the system of this embodiment, the identification information of the person being measured received by the receiving unit 31 and the body water content of the person being measured calculated by the body water content calculation unit 34 are linked together and transmitted from the body water content measuring instrument 1 to the server device 50, where they are stored in the memory of the server device 50. In this case, the measurement data of the body water content for each person being measured can be managed by the server device 50.

[0042] The body water content measuring device and system according to the present invention are not limited to the above-described embodiments, and various modifications can be made.

[0043] For example, in the above-described body water content measuring device 1, the person measuring the body water content inputs various information, such as the subject's identification information, into input unit 33, and reception unit 31 receives the various information, such as the subject's identification information. However, the present invention is not limited to this embodiment. In a body water content measuring device according to a modified example, various information, such as the subject's identification information, may be transmitted to the body water content measuring device from an external device, such as a portable mobile terminal (e.g., a smartphone) carried by the subject, and the reception unit may receive the various information, such as the subject's identification information.

[0044] Furthermore, when the server device 50 generates the trained model 54 by machine learning using the model generation means 52 and causes the calculation means 58 to calculate whether or not to issue a warning using the generated trained model 54, the type of sport, location (address), indoor / outdoor information, etc. may be additionally used as the teacher data 51 and information received by the reception means 56. In this case, the calculation means 58 can calculate whether or not to issue a warning by also referring to the type of sport and area information.

[0045] Furthermore, when measuring the subject's body water content using the body water measuring device 1, the subject may be able to input the subject's condition at the time of measurement (e.g., whether the subject has eaten or drunk alcohol immediately before, or the subject's body temperature, etc.) using the input unit 33. In this case, when information such as the subject's body water content calculated by the body water content calculation unit 34 is transmitted from the body water measuring device 1 to the server device 50, information related to the subject's condition at the time of measurement received by the reception unit 31 is also transmitted from the body water measuring device 1 to the server device 50. In this case, the server device 50 uses the model generation means 52 to generate a trained model 54 through machine learning, and the generated trained model 54 is used by the calculation means 58 to calculate whether or not to issue a warning. The subject's condition at the time of measurement may also be used as training data 51 or as information received by the reception means 56. In this case, the calculation means 58 can calculate whether or not to issue a warning by also referring to the subject's condition at the time of measurement.

[0046] Furthermore, the body water measuring device 1 and system of this embodiment can be used not only to measure the body water content of subjects who participate in sports such as school club activities, but also to measure the body water content of subjects who are bedridden in nursing homes, subjects who are in wheelchairs, and subjects who do not want to have their weight measured on a scale. [Explanation of symbols]

[0047] 1 Body water measuring device 10 Main body 20 electrodes 22 Code 30 Control Unit 31 Reception 32 Display section 33 Input section 34 Body water content calculation section 36 Judgment Department 38 Warning output section 40 Storage section 42 Communications Department 50 Server device 51 Teacher Data 52 Model Generation Method 54 trained models 56 Reception methods 58 Calculation means 59 Transmission Method 60 network lines 70 Weather information provider system

Claims

1. A pair of electrodes to be attached to the subject's arms, a reception unit that receives identification information of the subject; a body water content calculation unit that calculates body water content based on impedance calculated by passing a high-frequency weak current through the electrodes attached to the arms of the subject; a storage unit that stores the body water mass calculated by the body water mass calculation unit in association with the subject's identification information; a warning output unit that, when the subject's body water content is measured periodically, receives the subject's identification information through the receiving unit and, when the subject's body water content is calculated by the body water content calculation unit, issues a warning that there is a possibility of heat stroke or dehydration if the ratio of the body water content measured this time to the previous body water content measurement result stored in the memory unit, which corresponds to the subject's identification information received by the receiving unit, is smaller than a predetermined ratio, thereby preventing the occurrence of heat stroke or dehydration. A body water content measuring device equipped with

2. A pair of electrodes to be attached to the subject's arms, a reception unit that receives identification information of the subject; a body water content calculation unit that calculates body water content based on impedance calculated by passing a high-frequency weak current through the electrodes attached to the arms of the subject; a storage unit that stores the body water mass calculated by the body water mass calculation unit in association with the subject's identification information; a warning output unit that, when the subject's body water content is measured periodically, receives the subject's identification information through the receiving unit and, when the subject's body water content is calculated by the body water content calculation unit, issues a warning that there is a possibility of heat stroke or dehydration if the ratio of the body water content measured this time to the body water content results of the most recent predetermined number of body water content measurements or the body water content measurements within a predetermined period from the time of measurement that correspond to the subject's identification information received by the receiving unit is smaller than a predetermined ratio, thereby preventing the occurrence of heat stroke or dehydration problems; A body water content measuring device equipped with

3. the storage unit stores in advance heights corresponding to identification information of the person being measured, 3. The body water measuring device according to claim 1, wherein the body water calculation unit calculates the body water based on the impedance and a height corresponding to the subject's identification information received by the reception unit.

4. 4. The body water measuring device according to claim 1, further comprising a display unit that displays at least a portion of the body water mass according to past measurement results stored in the memory unit and the body water mass measured this time.

5. 5. The body water measuring device of claim 4, wherein the display unit displays the ratio of the body water content measured this time to the ideal value of body water content stored in the memory unit, corresponding to the identification information of the person being measured received by the reception unit.

6. a plurality of body water content measuring devices; a server device communicably connected to each of the body water measuring devices; Equipped with The body water content measuring device includes: a reception unit that receives identification information of the subject; a body water content calculation unit that calculates the body water content of the subject; a storage unit that stores the body water mass calculated by the body water mass calculation unit in association with the subject's identification information; It has When the body water content of the person being measured is measured periodically, the receiving unit receives the identification information of the person being measured, and when the body water content of the person being measured is calculated by the body water content calculation unit, information relating to the ratio of the body water content measured this time to the result of the previous body water content measurement stored in the memory unit, which information corresponds to the identification information of the person being measured received by the receiving unit, is transmitted from the body water content measuring device to the server device. The server device a model generation means for generating a trained model by machine learning using training data including the ratio and measurement environment information transmitted from the body water content measuring device, inputting the measurement environment information and outputting whether or not a warning is issued that there is a possibility of heatstroke or dehydration; a receiving means for receiving measurement environment information or weather information; a calculation means for calculating whether or not a warning about the possibility of heatstroke or dehydration should be issued by inputting the measurement environment information or meteorological information received by the reception means into the trained model generated by the model generation means; and a transmitting means for transmitting an instruction to the body water content measuring device to issue a warning indicating the possibility of heat stroke or dehydration when the calculating means calculates that a warning should be issued, thereby preventing the occurrence of heat stroke or dehydration; and The system has:

7. 7. The system according to claim 6, wherein the reception unit of the body water measuring device further receives measurement environment information, and the measurement environment information received by the reception unit is transmitted from the body water measuring device to the server device.

8. 8. The system according to claim 6 or 7, wherein the identification information of the subject accepted by the accepting unit and the body water content of the subject calculated by the body water content calculating unit are linked and transmitted from the body water content measuring device to the server device, and stored in the memory of the server device.

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