TWI505809B - Internal moisture meter and display control method therefor - Google Patents

Description

Body moisture meter and display control method thereof

The present invention relates to a body moisture meter for measuring the body moisture of a subject and a display control method therefor.

It is important to measure the body water of the subject. The dehydration symptom of the living body is a pathological condition in which the water is reduced in the living body. It is often found in daily occasions, especially when exercise or high temperature, when a large amount of water is discharged from the body to the outside due to sweating or rising body temperature. a symptom. Especially in the elderly, it is often seen that the water retention capacity of the living body itself is low. Compared with the general health, the elderly are generally considered to be more prone to dehydration symptoms.

In general, after the age of the elderly, the amount of urine is reduced due to the decrease in muscle storage and the decrease in renal function, and the mouth is not easily detected by the feeling of passivation, so that the necessary water in the cells is reduced. If this dehydration symptom is turned a blind eye, dehydration symptoms may become a fuse and evolve into more serious symptoms. In addition, the same dehydration symptoms can be seen in infants and young children. Although infants and young children have more water, they are unable to express their own water needs, so they may have dehydration symptoms because they are too late to be discovered.

Usually, when the water loss in the living body reaches 3% or more of the body weight, the body temperature adjustment disorder will occur, and the body temperature adjustment disorder will cause the body temperature to rise, and the body temperature rise will cause the decrease of the water in the body to form the evil. The sexual cycle eventually evolved into a condition known as Hyperthermia. Heatstroke includes enthusiasm such as enthusiasm, thermal fatigue, and heat stroke. Sometimes it can cause visceral disorders of the whole body. It does control the symptoms of dehydration and is expected to prevent the danger of heat stroke.

In the device for grasping the symptoms of dehydration, there is a device that measures the amount of water by measuring the impedance of the human body with a device that holds the handle with both hands (see Patent Document 1). In addition, a device for pressing the sensor to the skin and measuring the moisture of the skin is proposed (see Patent Document 2).

[Advanced technical literature]:

Patent Document 1: Japanese Laid-Open Patent Publication No. Hei 11-318845

Patent Document 2: JP-A-2003-169788

[The problem that the invention wants to solve]:

However, in the body moisture meter described, the subject must hold the handle by both hands, and is not suitable for use in such a manner as to easily measure the amount of water in the body of a person other than the subject. In other words, according to the structure of the body moisture meter described in Patent Document 1, it is difficult to measure the amount of water in the body of the infant or the subject who is caught in the consciousness.

On the other hand, in the skin moisture meter described in the patent document 2, the moisture content of the "dry muscle" and the body water content of the "dehydration symptom" are completely different in the physical quantity level of the measurement for the purpose of examining the degree of moisturization of the skin. Therefore, the skin moisture meter that observes the degree of moisturization of the skin under the influence of the humidity of the outside air cannot be used as the body moisture meter for confirming the presence or absence of dehydration.

In contrast, as described above, it is desirable to measure the amount of water in the body from the body surface. It is necessary to measure at a site that is not easily affected by the humidity of the outside air, and it is desirable to measure it through the mouth or under the skin. In particular, when the examiner wants to measure the body moisture of the subject, it is practical to measure the skin under the armpit. In order to achieve the above-described measurement of the moisture content in the underarm, the size and weight of the in vivo moisture meter are more severely restricted. For example, the in vivo moisture meter having the structure described in Patent Document 1 cannot be used.

Due to the miniaturization of the moisture meter in the body, the display unit that displays the measurement result must also be miniaturized. The water content is displayed in units of "%" or "Kg". The value is different from the body temperature. The average user is less familiar. The light is the value of the measurement result. It is difficult to intuitively grasp the state of the subject ( For example, whether it is in a dehydrated state, what kind of treatment is required, and the like. In Patent Document 1, the past moisture content measurement result is displayed on a graph together with the average water content, and the change in the body water content can be known. However, in order to perform such a graph display, the display portion needs to have a certain size, and it is difficult to apply to the display of the body moisture meter that requires miniaturization.

The present invention has been made in view of the above problems, and an object thereof is to provide a body moisture meter which can intuitively and easily grasp the state of the body water content of a subject, and a display control method therefor.

The internal moisture meter of one aspect of the present invention for achieving the above object has a configuration in which a measuring device for measuring the amount of water of a subject is displayed; and the current amount of water measured by the measuring device is displayed. a display device; a holding device for holding the current water amount as measurement information; determining, based on the current water amount, the device for determining whether the subject is in a dehydrated state or a non-dehydrated state; and changing the device based on the holding The device determines the display result of the display device by the previous determination result such as the upper water content of the information measurement and whether it is the dehydration state or not, and the current water content and the current determination result by the determination device.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a view showing an example of the appearance of the body moisture meter 100 of the present embodiment. The body moisture meter 100 contacts the skin of the subject with the end, and detects the physical quantity at the end according to the electrical signal supplied to measure the amount of water in the subject. The body moisture meter 100 of the present embodiment is configured such that the end portion contacts the subject's armpit, measures the physical quantity of the static electricity of the subject, and detects the degree of moistness of the underarm skin to estimate and detect the amount of water in the body. Further, the physical quantity detectable when measuring the amount of water in the body is not limited to the amount of static electricity, and for example, a resistance value measured by supplying a constant voltage or a constant current to the subject may be used.

In the body moisture meter 100, various user interfaces are disposed in the main body portion 101, and an electronic circuit for measuring the amount of water in the body is also housed. The user interface includes a power switch 102 and a display unit 103. When the power switch 102 is turned on, power supply to each part of the body moisture meter 100 by the power supply unit power supply unit 211 (second drawing), which will be described later, is started, and the body moisture meter 100 is brought into an operating state. The current component measurement result 1031 and the previous moisture component measurement result 1032 are displayed together on the display unit 103. Further, the display form of the display unit 103 is changed based on the previous measurement result and the current measurement result. In the present embodiment, the background color of the display unit 103 changes. Further, the battery display unit 1033 of the display unit 103 can notify the user of the remaining amount of the battery (the power supply unit 211 of FIG. 2). Further, when an invalid measurement result is obtained, or when a measurement error is detected, the display unit 103 displays " E " to notify the user of the above situation.

The body portion 101 is provided with an inductor portion 110 slidable in the directions of arrows 1101a, 1101b. In order to ensure the pressing pressure of the sensor head 111 to be surely adhered to the skin, the sensor unit 110 applies a force (for example, about 200 g) to the arrow 1101a by a spring (not shown), and the sensor head 111 is pushed to the skin. The device portion 110 is moved by a specific amount (for example, 1 mm to 10 mm, and 3 mm in the present embodiment) in the direction of the arrow 1101b, and measurement is started from then. When the user turns on the power switch 102 and the body moisture meter 100 is in the operating state, if it is detected that the sensor head 111 is pushed to the skin of the subject for a certain period of time or longer (for example, 2 seconds or more), the body moisture is measured. the amount. When the user turns on the power switch 102 and the body moisture meter 100 is in an operating state, the sensor head 111 is detected to have a specific load (for example, 100gf~300gf, More preferably, when 150 gf to 250 gf, and 150 gf in the present embodiment is pressed against the skin of the subject, the amount of water in the body is measured. By this design, the degree of adhesion of the sensor head 111 to the skin can be kept constant during the measurement.

Further, an electrode is disposed on the contact surface of the sensor head 123 attached to the front end of the inductor portion 110 and the subject, and a protective film covering the electrode is provided. The contact surface of the sensing head 111 may have a planar shape or a convex curved surface shape. An example of the shape of the contact surface may be, for example, a portion of a spherical surface (e.g., a spherical surface having a radius of 15 mm).

Fig. 2 is a block diagram showing an example of the functional configuration of the body moisture meter 100 of the present embodiment. In the second diagram, the control unit 201 includes a CPU 202 and a memory 203, and the CPU 202 executes various controls of the moisture meter 100 in the body by executing a program stored in the memory memory 203. For example, the CPU 202 executes the display control of the display unit 103, the drive control of the buzzer 222 and the LED lamp 223, and the measurement of the internal water content (in the present embodiment, the measurement of the electrostatic capacitance) in accordance with the flowcharts of FIGS. 4A and 4B. Wait. The memory 203 includes non-volatile memory and volatile memory, the non-volatile memory is used as a program memory, and the volatile memory is used as a working memory of the CPU 202.

The power supply unit 211 has a replaceable battery or a rechargeable battery to supply power to each part of the body moisture meter 100. The voltage regulator 212 supplies a constant voltage (for example, 2.3 V) to the control unit control unit 201 and the like. The battery remaining amount detecting unit 213 is based on the power supply unit of the power supply unit The voltage value supplied by 211 detects the remaining amount of the battery, and notifies the control unit 201 of the result of the detection. The control unit 201 controls the display of the battery display unit 1033 based on the battery remaining amount detection signal from the battery remaining amount detecting unit 213.

When the power switch 102 is pressed, the power supply unit 211 starts supplying electric power to each part. When the control unit 201 detects that the user has pressed the power switch 102 for one second or longer, the power supply unit 211 continues to supply power to each part, so that the body moisture meter 100 is in an operating state. As described above, when the sensor portion 110 is pressed by a certain amount or more in the direction of the arrow 1101b, the measurement switch 214 is turned on. When the ON state of the measurement switch 214 continues for a certain period of time (for example, 2 seconds), the control unit 201 starts measuring the moisture content. Further, in order to prevent the consumption of the power supply unit 211, the control unit 201 automatically causes the body moisture meter 100 to enter the power-off state if the measurement has not been started after the body moisture meter 100 has entered the operation state for 2 minutes.

The measuring circuit 221 is connected to the sensor head 111, and the capacitance is measured. Fig. 3 is a view showing a configuration example of the measurement circuit 221. The operational amplifiers 301 and 302, the resistors 303 and 304, and the subject volume 310 form a CR oscillation circuit. The oscillation frequency of the output signal 305 changes according to the sample volume 310. Therefore, the control unit 201 estimates the sample volume 310 by measuring the frequency of the output signal 305. Further, the inductive head 111 of the present embodiment may be configured such that the comb teeth of the two comb-shaped electrodes are shifted from each other, but the present invention is not limited thereto.

Go back to Figure 2. The display unit 103 is controlled by the control unit 201. Under the system, the display shown in Fig. 1 is performed. The buzzer 222 is activated when the sensor unit 110 is pressed to start measurement, and when the body moisture content measurement is completed, and the user is notified of the start and completion of the measurement. The LED lamp 223 is also notified with the buzzer 222. That is, the LED lamp 223 is turned on when the sensor unit 110 is pressed to start measurement, and when the body moisture content measurement is completed, the user is notified of the start and completion of the measurement. The timer unit 224 receives the power supply from the power supply unit 211 and operates when the power is off, and notifies the control unit 201 of the time when it is in the operating state.

Hereinafter, the operation of the related body moisture meter 100 of the present embodiment having the above configuration will be described with reference to the flowcharts of Figs. 4A and 4B. The body moisture meter 100 of the present embodiment changes the background color of the display unit 103 by referring to the measured body water content and the body water amount measured last time, and helps the user to appropriately determine and handle the measured body water content.

In step S401, the control unit 201 detects an instruction to start measurement. In this example, the state of the measurement switch 214 is monitored, and when the ON state of the measurement switch 214 continues for 2 seconds or longer, it is determined that an instruction to start measurement is detected. When the instruction to start the measurement is detected, the control unit 201 measures the oscillation signal frequency from the measurement circuit 221 to calculate the body water content of the subject in step S402. Next, in step S403, the control unit 201 determines whether or not the subject is in a dehydrated state based on whether or not the body water amount calculated in step S402 exceeds a certain threshold. The threshold at this time is ideal, for example, when the water is 100%, When the air is 0%, it is equivalent to 35%.

In step S404, the control unit 201 acquires the last measurement information from the memory 203, and determines the validity of the last measurement information. In the memory 203, for example, at least the body water content measurement result (the last measurement result) that has just been performed is stored in the data shown in FIG. In the figure, the measured value 501 is the amount of body water measured in step S402 at the time of the previous measurement. The determination result 502 is information which is displayed in the step S403 as the dehydrated state or the non-dehydrated state in the previous measurement. The measurement time 503 is information indicating the time notified by the timer unit 224 in the previous measurement. The measurement time 503 can be, for example, the time notified by the timer unit 224 when the measurement is performed in step S402.

The control unit 201 acquires the elapsed time from the last measurement from the measurement time 503 included in the measurement information and the current time notified by the timer unit 224, and determines whether the measurement information is valid or not based on the elapsed time. For example, when the elapsed time does not exceed the threshold (for example, two weeks), the control unit 201 determines that the measurement information is valid. In fact, when you are in a state of severe dehydration, you can grasp the state of dehydration after ten days. In addition, if it is not measured for half a month (two weeks) or more, it should be judged that the moisture content measurement has not been performed. Therefore, in the present embodiment, when the elapsed time since the last measurement exceeds two weeks, it is determined that the last measurement value is invalid. Further, for example, when the body moisture meter 100 is used for the first time, when the last measurement value is not memorized, the last measurement value is also determined to be invalid.

In addition, in the validity determination of step S404, the lower limit of the threshold may also be set, and the elapsed time from the last measurement does not exceed the threshold. When the lower limit is used, it is judged that the last measured value is invalid. For example, when it is in a state of mild dehydration, it can be dehydrated after two or three hours after the treatment of water replenishment, but if it is in a state of severe dehydration, even if it is infused, two or three hours is not enough to eliminate dehydration. phenomenon. Therefore, the lower limit of the threshold is preferably set to be more than two hours that the dehydration phenomenon may be eliminated, and it is more desirable to set the severe dehydration state to be six hours or more. In addition, for example, when the water content is 15% or less in the severe dehydration state, the lower limit of the threshold is set to six hours, and in the case of the mild dehydration of 15 to 35%, the lower limit of the threshold is set to two hours, etc. The secondary measurement value or the previous state determination changes the lower limit value. Similarly, the upper limit of the threshold may be changed based on the last measured value or the previous state.

When it is judged that the measurement information is invalid (or the last measurement result does not exist), the process proceeds from step S405 to step S406. In step S406, the control unit 201 uses only the display form of the current measurement information setting display unit 103. For example, when the result of the measurement of the body water content in the current state is determined to be in the dehydrated state, the background color of the display unit 103 is red, and when it is determined that the background color is not dehydrated, the background color of the display unit 103 is set to blue. In addition, when the last measured value is invalid, the display of the last moisture content measurement result 1032 can be made "--.-" or the like, and the user can be notified by the specific display.

Further, the setting of the display form is not limited to the above. For example, even if it is in a non-dehydrated state, when the dehydration state is approached, that is, when the amount of water in the body is lower than a certain threshold, the background color can be set to yellow or the like. There are various variations. The threshold value at this time is desirably equivalent to 25% to 35% when the water is 100% and the air is 0%. Further, when it is determined that the water is in a dehydrated state, yellow color may be displayed in a light state, red color may be displayed in a severe state, and the background color may be switched depending on the measured water content. One example of switching between such display modes is shown in FIG. In the example of Fig. 7, whether or not the dehydration state is determined is determined by whether the water content is 20% or more or more, and when the moisture content exceeds 15% and is less than 35%, a yellow background color is selected. In other words: ‧ water content is less than 15% (severe dehydration state) → background color is set to red, ‧ water content is above 15%, less than 35% (light dehydration or near dehydration) → background color is set to Yellow, ‧ The water content is above 35% (good non-dehydrated state) → The background color is set to blue.

On the other hand, if the measurement information is valid, the process proceeds from step S405 to step S407. In the steps S407 to S412, the control unit 201 sets the display form of the display unit 103 (the background color of the display unit 103 in the present embodiment) based on the current measurement result and the previous measurement result.

In step S407, the control unit 201 determines whether or not the current measurement result is in a non-dehydrated state. When the current measurement result is in the non-dehydrated state, the process proceeds to step S410, and the control unit 201 determines that the subject is in a non-dehydrated state (first state), and sets the background color of the display unit 103 to blue. At this time, in this example, the state (whether or not the state of dehydration) is displayed regardless of the result of the previous measurement.

On the other hand, if it is determined in step S407 that the current measurement result is the dehydrated state, the processing proceeds to step S408. In step S408, the control unit 201 determines from the measurement information read out from the memory 203 in step S404 that the determination result 502 of the previous measurement is the dehydrated state or the non-dehydrated state. If the determination result 502 of the previous measurement is the non-dehydrated state, the process proceeds to step S411. In step S411, the control unit 201 determines that the subject is in a dehydrated state and is in a state to be warned (second state), and sets the background color of the display unit 103 to red.

When the previous determination result 502 is displayed in the dehydration state in step S408, the processing proceeds to step S409. In step S409, the control unit 201 reads the last measurement value 501 from the measurement information read out from the memory 203 in step S404, and compares this with the water content of the current measurement result. If the amount of water in this time is larger than the amount of water in the previous time, the amount of water of the subject is improved, but it is still in a dehydrated state. Therefore, it is determined that the subject should be warned that the subject is in the second state of dehydration. Therefore, the process proceeds from step S409 to step S411, and the background color of the display unit 103 is set to red as described above.

In step S409, if the current water content is less than the last water amount, the processing proceeds to step S412. In step S412, the control unit 201 determines that the subject continues the previous dehydration state, and in the symptom deterioration state (third state), sets the background color of the display unit 103 to the red flash state.

The setting of the display form of the display unit 103 in steps S407 to S412 described above is shown in Fig. 6A. In addition, in pictures 6A to 6C, "上上" means the last measured value (water content), and "this" (the original text is "now" in Japanese) means the measured value (water content). in other words:

‧ When this is judged to be non-dehydrated → the first state → the background color is set to blue.

‧ When the last time was non-dehydrated, this time it was judged to be dehydrated → the second state → the background color was set to red.

‧ Both the last time and the current time are dehydrated, but when the water content in the body rises → the second state → the background color is set to red.

‧ The last time and this time are dehydrated, but when the water content in the body decreases → the third state → the background color is set to the red flashing state.

When the display mode is set as described above, the control unit 201 overwrites the memory at the time when the measured value obtained in step S402 and the determination result obtained in step S403 is obtained in step S402, in step S413. 203 measurement information. In addition, the manner in which the measurement information is maintained is not limited to the manner of writing. It may also be, for example, measurement information that maintains a certain number of points. Next, in step S414, the control unit 201 displays the current measured value (water content) and the previous measured value (water content) on the display unit 103 using the display form set in any of steps S406 and S410 to S412. For example, the control unit 201 displays the set background color on the display unit 103, and displays the current measured value (water content) and the last measured value (water content) as shown in Fig. 1 . However, if it is determined in step S405 that the previous measurement information is invalid, the display of the last measurement value is not performed.

In addition, although the example which displayed the last measurement value and this measurement value on the display part 103 simultaneously is shown in FIG. 1, it is not limited to this. It is also possible to display, for example, the last measured value and the current measured value in turn. At this time, the switching of the display may be automatically performed according to a specific interval, or may be switched by, for example, pressing a specific operation input such as the power switch 102 each time.

Further, the setting of the display form (Fig. 6A) is merely an example, and is not limited thereto. It is also possible to set the display form as shown in, for example, FIG. 6B or FIG. 6C. Further, the [pre-presentation] in the table indicates the value of the last measured value (water content) minus the current measured value (water content).

In Fig. 6B, the first state is divided based on the difference between the previous measurement value and the current measured value (water content). In other words, if the value of the last measured value minus the current measured value is less than the threshold value Th, the water content is equal to the last time increase, or although the decrease is less than the threshold value Th, the water content continues to be stable. Good state, set the background color to blue. On the other hand, if the value of the last measured value minus the current measured value is greater than the threshold value Th, it means that the amount of decrease in the amount of moisture is higher than the threshold value Th, and the tendency to decrease is alert, and the background color is set to yellow. Or, when the water content is below a certain value, it is possible to enter the dehydration state, and the background color can be set to yellow. The above processing is realized by referring to the current measurement information and the last measurement information in step S410. Further, in the second state, when the previous state is the non-dehydrated state, the background color is set to a yellow flash in order to indicate that the dehydration state has just entered. This setting is performed in step S411.

Further, in the sixth state, in the first state, referring to the previous determination result 502, it can be distinguished that the previous non-dehydrated state has continued, or the previous dehydration state, but this time is the non-dehydrated state. In other words, in the first state, when the determination result 502 of the measurement information indicates the non-dehydrated state, the display background color is set to blue, and when the determination result 502 of the measurement information indicates the dehydrated state, the display background color is set to yellow.

In addition, since the measured value of the water content is extremely small and urgent treatment is required, the red flashing light can be displayed regardless of the information content of the previous measurement. Further, in addition to the change in the display form, the buzzer 222 may be audible or the LED lamp 223 may be flashed from the first to third states.

Further, the determination result 502 is included in the measurement information held in the memory 203, but is not limited thereto. If the configuration is, for example, the measurement information measurement value 501 read from the memory 203 determines whether or not the dehydration state is generated, and the determination result 502 is generated, the determination result 502 is not required for the measurement information held in the memory 203.

Further, in the above embodiment, the display mode is the background color of the setting display unit, but the present invention is not limited thereto. For example, the display form to be set may not be the background color, but the color of the portion (seven-segment display portion) in which the number is displayed. Or you can display specific symbols and animations.

Further, in the above embodiment, in order to determine the validity of the last measurement information, the last measurement time is memorized and compared with the current time, but the present invention is not limited thereto. It can also be, for example, the time at which the measured value is obtained. Click to start the timer. When this timer expires, it is judged that the last measurement information is invalid.

Further, in the above-described embodiment, as shown in FIG. 1 or step S414, the last measured value and the current measured value can be simultaneously displayed, but the present invention is not limited thereto. For example, in the first drawing, the display unit 103 is provided with two numerical value display units for displaying the current water content measurement result 1031 and the previous water content measurement result 1032. However, the portion where the measurement result 1032 is displayed may be omitted. Leave a value display. In the case where the body moisture meter 100 that displays the measured value is supplied to the power source (before the execution of step S401 in FIG. 4A), the numerical value display unit displays the previous water content measurement result, and displays it in the numerical value display unit in step S414 of FIG. 4B. The moisture content of the measurement results. In addition, when the previous moisture content measurement result is displayed in response to the power supply, the validity determination of the previous measurement information described in step S404 may be performed, and when it is held in the memory, the measurement information is valid, and the display is invalid. Then display "--.-" and so on.

In addition, the measurement result 1031 of the current water content and the measurement result 1032 of the previous moisture amount are provided with two numerical value display units, or one numerical value display unit is provided, and the last water content is displayed when the power is turned on. The structure of the measurement result can be omitted from the above-described configuration for changing the display form (control of the background color). Since the user can grasp the last water amount and the current water amount, it is possible to recognize which state is in the first state, the second state, and the third state described above. Although it is not as good as the change in the display form (change in background color) In addition, it is possible to intuitively recognize the state of dehydration, but the configuration in which the display unit 103 is changed in display form and the process of performing dehydration/non-dehydration determination (step S403 and the like) are omitted, and the cost of the product can be reduced.

According to the body moisture meter as in the above embodiment, the state of the body water content of the subject can be easily grasped.

[Effect of the invention]:

According to the present invention, the state of the moisture content in the subject can be grasped intuitively and simply.

Other features and advantages of the invention will be apparent from the description and appended claims. In the drawings, the same or similar configurations are attached, and the same reference numerals are attached.

The present invention is not limited to the embodiments described above, and various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, in order to disclose the scope of the present invention, the scope of each patent application is attached below.

100‧‧‧ body moisture meter

101‧‧‧ Body Department

102‧‧‧Power switch

103‧‧‧Display Department

1031‧‧‧The results of this water measurement

1032‧‧‧Last water measurement results

1033‧‧‧Battery display

110‧‧‧ sensor

1101a, 1101b‧‧‧ arrow direction

111‧‧‧Induction head

201‧‧‧Control Department

202‧‧‧CPU

203‧‧‧ memory

211‧‧‧Power Supply Department

212‧‧‧Voltage regulator

213‧‧‧Battery Remaining Sensor

214‧‧‧Measurement switch

221‧‧‧Measurement circuit

222‧‧‧ buzzer

223‧‧‧LED lights

224‧‧‧Timekeeping Department

301, 302‧‧‧Operational Amplifier

303, 304‧‧‧ resistance

305‧‧‧ Output signal

310‧‧‧Subject capacity

501‧‧‧Measured value

502‧‧‧Results

503‧‧‧Measurement moment

The accompanying drawings, which are incorporated in the claims

Fig. 1 is a view showing the appearance of a moisture meter in the body according to the embodiment.

Fig. 2 is a block diagram showing the functional configuration of a body moisture meter according to an embodiment.

Fig. 3 is a block diagram showing a measuring circuit of a body moisture meter according to an embodiment.

Fig. 4A is a flow chart for explaining the operation of the body moisture meter according to the embodiment.

Fig. 4B is a flow chart showing the operation of the body moisture meter according to the embodiment.

Figure 5 is a diagram illustrating the memory retention measurement information.

Fig. 6A is a view showing the selection of the display form in response to the measurement result.

Fig. 6B is a view showing the selection of the display form in response to the measurement result.

Fig. 6C is a view showing the selection of the display form in response to the measurement result.

Fig. 7 is a view for explaining the selection of the display form when the previous measurement result is invalid or when there is no previous measurement result.

100‧‧‧ body moisture meter

101‧‧‧ Body Department

102‧‧‧Power switch

103‧‧‧Display Department

1031‧‧‧The results of this water measurement

1032‧‧‧Last water measurement results

1033‧‧‧Battery display

110‧‧‧ sensor

1101a, 1101b‧‧‧ arrow direction

111‧‧‧Induction head

Claims (10)

A body moisture meter comprising: a measuring device that measures a water content of a subject; a display device that displays a current amount of water measured by the measuring device; and a holding device that holds the current water amount as measurement information, According to the current water amount, the determination device for determining whether the subject is in a dehydrated state or a non-dehydrated state, and the changing device are based on the amount of time before the information is held in the holding device and whether it is dehydrated. The result of the previous determination such as the state, and the current water content and the current determination result by the determination device, the display form of the display device is changed; wherein the change device is based on the fact that the current determination result is non-dehydrated. The first state of the state, the current determination result is a dehydrated state, the current water content is lower than the second state of the previous water component, the current determination result is a dehydrated state, and the previous water content is higher than the current moisture. In any of the states such as the third state of the quantity, the display form is changed. The body moisture meter of claim 1, wherein the changing device displays the display state of the second state described in the preceding paragraph. According to the previous item, whether the result of the previous determination is dehydrated or not is changed. The body moisture meter according to claim 1 or 2, wherein the display means changes the display form of the first state based on a difference between the last water amount and the current water amount. The body moisture meter of claim 1, wherein the display device simultaneously displays the current water amount and the last water amount, or performs a turn-to-turn display in response to the operation input. The body moisture meter according to the first aspect of the invention, further comprising: a judging device that maintains the validity of the measurement information of the holding device, and determines the elapsed time from the measurement information, and the judging device judges When the last measurement information is invalid, the changing means determines the display form of the display device using the current water amount or the current determination result. The body moisture meter of claim 5, wherein the judging means determines the validity by comparing the elapsed time and the threshold value, wherein the threshold value is based on at least the last water amount or the last judgment result. Any one changes. A display control method for a moisture meter in a body, comprising: a measurement step of measuring a moisture content of a subject; and a display step of displaying a current amount of water measured by the measurement step, a step of determining that the current amount of moisture is held in the memory as the measurement information, and determining a step of determining whether the subject is in a dehydrated state or a non-dehydrated state based on the current amount of water, and a changing step, which is maintained according to the above The result of the previous determination of the information on the upper water content of the memory and whether it is the dehydrated state, and the current determination result of the current water amount and the determination step, the display form of the display step is changed. The change device is based on: the first state in which the current determination result is the non-dehydrated state, the current determination result is the dehydrated state, the current water content is lower than the second state of the previous water component, and the present invention The result of the sub-determination is a state in which the dehydration state and the previous water amount are higher than the third state of the current water component, and the display form is changed. A body moisture meter having a measuring device for measuring a water content of a subject, wherein the first display device includes a first display device that displays a moisture content held in the holding device on a numerical value display unit when a power source is turned on. The second display device displays the amount of moisture measured by the measuring device on the numerical value display unit, and the updating device that updates and holds the moisture content of the holding device with the current water content. The body moisture meter of claim 8, wherein the body moisture meter further includes a determining device that determines whether the holding device retains a moisture content, or whether the retained moisture amount is a valid last water amount, and determines that the moisture amount is not maintained. When the moisture content or the retained moisture content is not the effective last water amount, the first display device displays the situation on the numerical value display unit. A display control method for a moisture meter in a body, comprising: a measuring device for measuring a moisture content of a subject, wherein the method includes a step of holding a memory held by the measuring device, and a first display step. When the power is turned on, the amount of moisture held in the memory is displayed on the numerical display unit, and the second display step is performed by displaying the amount of water measured by the measuring device on the numerical display unit and updating The step of updating and retaining the moisture content of the memory by the current amount of water.