JP5351681B2 - Body temperature detection system - Google Patents

Description

The present invention relates to a body temperature detection system, and more particularly to a body temperature detection system that can detect body temperature together with sweating information of infants.

There has been proposed a monitoring system that estimates the state of an infant and takes an appropriate response to the incident of the infant (Japanese Patent Laid-Open No. 2004-181218). However, it does not generate an alarm by detecting a sudden body temperature change or sweating information due to an infection or the like in real time.

JP 2004-181218 A

The object of the present invention has been made in view of the above problems, and provides a body temperature detection system capable of notifying a guardian or a caregiver of heat retention or sweating according to need using body temperature information and sweating information. Is.

In order to solve the above problems, the body temperature detection system of the present invention is a body temperature detection system that also detects a sweating state, which is covered with a waterproof film and detects the presence or absence of sweating with a temperature measurement unit that measures body temperature. a biological information detecting unit that includes the IC tag and a perspiration detector consisting of the capacitance humidity sensor for, from the IC tag reading unit every 5-20 minutes for surveying temperature section and emitting perspiration detector 13 Portable terminal including a reading unit that transmits an electromagnetic wave having a frequency of .56 MHz and reads the body temperature value obtained in synchronization with the electromagnetic wave and the presence or absence of perspiration, a display unit, an alarm generation unit, and a determination unit that performs various calculations and determinations The display unit displays the trend of the body temperature value together with the “medicine” memo information in a plot, and after the body temperature value has risen, it has been lowered and exceeds a predetermined value of 38 ° C. , And sweating In there a Judging by the determination unit to generate an alarm from the alarm generating section, the green body temperature then further said body temperature value is displayed in the plot Judging by the determination unit to be less than 38 ℃ is a predetermined value It is characterized by displaying . Further, the display unit displays a trend value of the body temperature value. Furthermore, it is connected to a pulse oximeter so that the pulse and blood oxygen saturation (SPO ₂ ) can be stored and displayed. In addition, an alarm is generated when body temperature and blood oxygen saturation (SPO ₂ ) are detected above / below a predetermined threshold.

According to the present invention, it is easy for a guardian such as a mother or a caregiver to maintain the body temperature of the subject or to promote sweating based on sweating information during fever of the subject, particularly an infant. A body temperature detection system that can be performed is obtained.

It is a block diagram of an IC tag including a body temperature value and humidity value detection unit used in the body temperature detection system in the present invention. It is a block diagram of the portable terminal used for the body temperature detection system in this invention. It is a processing flowchart of the body temperature detection system in this invention. It is a figure which shows the trend of the body temperature value by the body temperature detection system in this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments can be appropriately changed, and the scope of the present invention is not limited to the embodiments. FIG. 1 is a block diagram of an IC tag including a body temperature value and a sweat detection unit used in the body temperature detection system of the present invention. FIG. 2 is a block diagram of a portable terminal used in the body temperature detection system according to the present invention.

<Specific configuration of monitoring system>
A subject such as an infant (not shown) attaches an IC tag 100 at an appropriate position on the body surface or in the vicinity of the body surface, encloses it with an enveloping member having a hook-and-loop fastener, etc., and attaches it to the diaper in a removable manner. Or a wristband to measure the body temperature value of an infant or the like and the humidity value as sweating information.

The portable terminal 50 includes a microcomputer, and externally performs communication via a control unit (CPU) 10 that performs various calculations and determinations, a display unit 11, and an information communication network (not shown) such as the Internet using i-mode. A communication unit 12, a connection terminal 12a, a wireless IC tag reading unit 13, an input unit 14, a function key 14a, a storage unit 15, a processing flow, etc. are stored, a ROM 16, a RAM 17 storing a computer-readable program, A notification means 19 such as a buzzer or a vibrator is provided.

Medication (medication) data is input and stored with the function key 14a and the input unit 14, and is displayed on the display unit 11 formed of liquid crystal, color liquid crystal, LED, organic EL together with body temperature value and sweating information as biological information. It can be displayed. Further, input items are appropriately selected with the function keys 14a, and body temperature, blood pressure, pulse, blood glucose level, etc. can be input, stored and displayed. In addition, a pulse oximeter can be connected to the connection terminal 12a to store and display the measured blood oxygen saturation (SPO ₂ ) and pulse, and to display real-time values during measurement during measurement. Yes. By doing so, since the body temperature value and the blood oxygen saturation (SPO ₂ ) can be checked together, it is possible to quickly confirm whether or not pneumonia has occurred. Further, when the blood oxygen saturation (SPO ₂ ) is less than a predetermined value (threshold value), for example, 90%, an alarm is generated by the notification means 19 such as a buzzer, a vibrator, sound, and light.

<Configuration of IC tag>
In FIG. 1, reference numeral 100 denotes an IC tag (RFID) configured to operate in response to an external communication signal. A ROM 101 is a storage medium that receives a signal from the IC tag reading unit 13 and stores a program for operating the logic unit 110 according to a predetermined flow and is readable by a microcomputer. An EEPROM 102 stores offset values, temperature correction values, humidity correction values, and the like corresponding to the temperature sensor 106a and the humidity sensor 106b. In addition, body temperature values and humidity values as sweating information can be stored. The logic unit 110 may include a microcomputer and may be a CPU that can control a more complicated processing flow. Reference numeral 107a denotes an A / D conversion unit of a temperature sensor 106a that constitutes a temperature measurement unit for detecting body temperature as biological information, and reference numeral 107b denotes a humidity detection unit as a sweating detection unit for detecting the presence or absence of sweating as biological information. It is an A / D conversion part of humidity sensor 106b which constitutes. The A / D conversion unit 107a performs A / D conversion on a body temperature signal generated by the temperature sensor 106a and an oscillation circuit (not shown). The A / D conversion unit 107b performs A / D conversion on a humidity signal generated by the humidity sensor 106b as sweating information. The temperature sensor 106a and the A / D conversion unit 107a constitute a body temperature value detection unit, and the humidity sensor 106b and the A / D conversion unit 107b constitute a humidity value detection unit. The humidity sensor 106b detects either absolute humidity or relative humidity as the humidity value.

As the temperature sensor 106a, a semiconductor type that outputs an analog signal almost linearly with respect to a temperature change, can be miniaturized and integrated with an IC tag, and has a temperature resolution of 0.05 ° C. between 35 to 42 ° C. However, a thermistor type or thermopile (thermocouple) type is also possible. The humidity sensor 106b is a capacitive humidity sensor that is resistant to condensation.

Reference numeral 103 denotes a transmission / reception circuit for acquiring body temperature information of an IC tag (RFID) 100 having a temperature measurement unit provided in an infant or the like, 103a is an antenna, and 104 is a power supply unit. The power supply unit 104 supplies power to each unit of the IC tag 100 having the temperature measurement unit when the body temperature information is read through the antenna unit 103a having a coil. The IC tag 100 includes the antenna 103a and has a width W of 5 mm × 5 mm and a thickness T of about 1.5 mm. The IC tag 100 may be any frequency as long as it can communicate (transmit / receive) with an electromagnetic wave having a frequency that can pass through a living body, but preferably can transmit with an electromagnetic wave of 13.56 MHz. .

<Processing flow>
For a subject such as an infant, a nursing / caregiver first encloses the IC tag 100 with an enveloping member having a hook-and-loop fastener and the like, and is detachably attached to the diaper or provided on a wristband. The IC tag 200 is attached to or pasted at an appropriate position on the subject's body surface so that the IC tag 200 contacts the subject's body surface.

The measurement is started by starting counting the measurement start time or by inputting a measurement start time setting (time setting) instruction using the input unit 14 or the like. The body temperature information is transmitted, for example, every 5 to 20 minutes from the IC tag reading unit 13 to the IC tag 100 with an electromagnetic wave having a predetermined frequency, for example, 13.56 MHz (in this case, the transmission / reception distance is about 3 cm to 10 cm). Then, reading of the body temperature value information of the temperature sensor 106a obtained in synchronization with the signal is started, and the determination unit determines whether or not the body temperature value exceeds a predetermined value, for example, 38 ° C. (step S1). The predetermined value may be 37.5 ° C. when the normal heat is low.

If the determination unit determines that the body temperature value exceeds a predetermined value, here 38 ° C., the process proceeds to step S2 (if it is 38 ° C. or less, the process proceeds to step S9 described later). In step S2, the body temperature value is read for a predetermined amount, for example, about 60 to 180 minutes (the time necessary to determine whether the body temperature is increasing or decreasing), and whether or not the body temperature value is increasing. Judgment is made by the determination unit. When it is determined that the body temperature value is increasing, the process proceeds to step S3 (when it is determined that the body temperature value is decreasing, the process returns to step S1). In step S3, the body temperature value is continuously read and the maximum value (peak value) is held, and the process proceeds to step S4. Next, in step S4, the determination unit determines whether the body temperature value is decreasing. If it is determined that it is descending, the process proceeds to step S5 (if it is not descending, the process returns to step S3). In step S5, it is determined whether or not the body temperature value exceeds a predetermined value, for example, 38 ° C. When it is determined that the body temperature value exceeds a predetermined value, for example, 38 ° C., the process proceeds to step S6 (when it is determined that the body temperature value does not exceed the predetermined value, for example, 38 ° C., the process proceeds to step S9 described later). In step S <b> 6, the determination unit determines whether or not the humidity value measured by the humidity sensor 106 b as the sweat detection unit is equal to or greater than a predetermined value (presence / absence of sweat). If it is determined that the humidity value is equal to or greater than a predetermined value (threshold value), for example, 70% or more of absolute humidity (with sweating), the process proceeds to step S7 (when it is determined that there is no sweating, the process proceeds to step S9 described later). In step S7, the notification means 19 generates an alarm with a buzzer, vibration, voice, light, or the like. This is for urging parents or guardians to wipe away sweat so that the immune function does not decrease when the body temperature of the subject rapidly drops below 38 ° C. due to sweating.

Subsequently, the body temperature value is read for about 60 to 120 minutes, and the process proceeds to step S8. In step S8, the determination unit determines whether or not the body temperature value is lower than a predetermined value, for example, 38 ° C. Return). In step S9, the notification means 19 notifies the user that the heat has been smoothly removed by voice or the like, prompts sweating, and ends the processing flow.

Although the present embodiment has been described using a humidity sensor as the sweat detection unit, a change in impedance or capacitance due to an increase in moisture due to sweat may be detected by a sensor that directly senses. Moreover, you may provide such a sensing part separately from the IC tag provided with the temperature measuring part.

FIG. 4 is an example in which the trend of the body temperature value and the memo information of “medicine” are displayed on the display unit when monitoring is performed every 15 minutes for 12 hours from 19:00 to the next morning. When the display unit 11 is formed of a color liquid crystal, LED, or organic EL, the body temperature is lower than a predetermined temperature, and when the display unit 11 is in a descending period, it is displayed on the display unit 11 so that the guardian can take a glance to that effect. The body temperature plot should be displayed in green.

DESCRIPTION OF SYMBOLS 10 ... CPU, 11 ... Display part, 12 ... External communication part, 13 ... IC tag reading part, 100 ... IC tag, 106a ... Temperature sensor, 106b ... Humidity sensor

Claims (3)

A body temperature detection system that also detects the state of sweating,
A living body information detection unit including an IC tag that is covered with a waterproof film and includes a temperature measurement unit that measures body temperature and a sweat detection unit that includes a capacitive humidity sensor for detecting the presence or absence of sweat; and the temperature measurement unit And a reading unit that transmits an electromagnetic wave having a frequency of 13.56 MHz from the IC tag reading unit to the perspiration detection unit every 5 to 20 minutes , and reads the body temperature value obtained in synchronization with the electromagnetic wave and the presence or absence of the perspiration, It consists of a display unit, an alarm generation unit, and a mobile terminal including a determination unit that performs various calculations and determinations .
The display unit displays the trend of the body temperature value in a plot together with “medication” memo information,
When the body temperature value rises and then falls, it exceeds a predetermined value of 38 ° C. , and when the judgment unit determines that there is sweating, an alarm is generated from the alarm generation unit,
Thereafter, when the determination unit determines that the body temperature value is lower than a predetermined value of 38 ° C., the body temperature displayed in the plot is displayed in green . _2. The body temperature detection system according to claim 1, wherein the system is connected to a pulse oximeter so that the pulse and blood oxygen saturation (SPO ₂ ) can be stored and displayed. 2. The body temperature detection system according to claim 1, wherein an alarm is generated when body temperature and blood oxygen saturation (SPO ₂ ) are detected above / below a predetermined threshold.

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