WO2019182095A1

WO2019182095A1 - Body temperature measurement device

Info

Publication number: WO2019182095A1
Application number: PCT/JP2019/012015
Authority: WO
Inventors: 久美廣瀬; 景子小俣
Original assignee: トッパン・フォームズ株式会社
Priority date: 2018-03-23
Filing date: 2019-03-22
Publication date: 2019-09-26
Also published as: JP6957398B2; JP2019168342A

Abstract

The present invention is attached to the body and measures the skin temperature and the ambient temperature to identify the body temperature, wherein a skin temperature sensor 21 is configured such that an end portion thereof is exposed at a prescribed height to the skin-side from a skin-side casing surface 13 that is on the body-side when the invention is mounted, is in contact with the skin and measures the skin temperature; and an external temperature sensor 22 is configured such that an end portion thereof is positioned in an exposed state on the casing-interior side of an external-side casing surface 14 on the reverse side from the skin-side casing surface 13, a space area 22A is formed between the position of the external-side casing surface 14 and said end portion, and the ambient temperature is measured.

Description

Body temperature measuring device

The present invention relates to a body temperature measuring device for specifying a body temperature by attaching it to a body and measuring a skin temperature and an external temperature.

In recent years, there has been an increasing need for measuring body temperature for a long time such as sleeping, exercising, and working for the purpose of health management. To measure body temperature, it is common to measure in the mouth or armpit, but it is difficult to measure body temperature for a long time at these positions. As a method for measuring body temperature over a long period of time, a method of measuring the body surface temperature (skin temperature) by wearing a device on the body is known, but the body surface temperature is easily affected by the outside air temperature, so the outside air temperature Therefore, it is necessary to correct the body surface temperature and calculate the body temperature. For this reason, it is desirable that not only the body surface temperature but also the outside air temperature is not affected by clothing and the like, and the variation is minimized.
Conventionally, body temperature measuring devices for knowing body temperature are known from Patent Documents 1 to 3, for example. In Patent Document 1, as a wearable sensor device, a body surface temperature detection unit is provided on a surface on the body surface side inside a casing, and an outside air temperature detection unit is provided on the opposite surface. It is described that the temperature is measured by conducting heat to the temperature measuring element of the body surface temperature detecting unit, and the outside temperature is detected by the outside temperature detecting unit through the casing.

Further, in Patent Document 2, as a wearable temperature measuring device, a body surface temperature detector is provided on the same surface as the casing on the surface that is the body surface side of the casing, and is on the opposite side of the body surface. Thus, it is described as a configuration provided on the back side of the display unit inside the casing.
Further, in Patent Document 3, as a body temperature information terminal device, a body surface temperature detection unit is provided to protrude from the casing on a surface on the body surface side of the casing, and an outside air temperature detection unit is provided on the opposite surface from the casing. It is described as a configuration provided to protrude.

Japanese Patent No. 6163637 JP 2008-128781 A Japanese Patent No. 3909301

By the way, the apparatus for measuring the body surface temperature and the outside air temperature as described above is to calculate the body temperature by various methods based on the measured temperatures, but the measured temperature that is the data to be calculated Is the data from the beginning of the stable period when the body surface temperature is reached, and it is necessary to reduce the time until that time and minimize the variation in temperature measurement. If this is done, it takes time until the stable period, and it is difficult to say that the structure copes with variations in measurement temperature. In particular, the outside air temperature detector provided on the same surface as or protruding from the casing has a structure that is attached in contact with clothing such as underwear, so accurate temperature measurement cannot be performed due to frictional heat with the clothing. There's a problem.
Therefore, the present invention has been made in view of the above problems, and provides a body temperature measuring device having a structure in which the time until the stable period of measured temperature data to be calculated for body temperature is shortened and the variation in measured temperature is reduced. With the goal.

In order to solve the above-mentioned problems, the invention of claim 1 is a body temperature measuring device that is attached to the body, measures skin temperature and external temperature for specifying body temperature, and stores at least elapsed time and measured temperature data. The tip portion is exposed at a predetermined height from the housing attached to the body and the skin-side housing surface on the body side when the body is attached to the body, and the skin comes into contact with the skin of the body A skin temperature sensor for measuring temperature, and a tip portion of the housing surface other than the skin-side housing surface is exposed to the inside of the housing, and a gap is formed between the position of the housing surface and the tip portion. And an external temperature sensor that is provided with a region and measures an external temperature.

According to the present invention, the skin temperature and external temperature for specifying the body temperature are measured by being attached to the body, and the skin temperature sensor is the skin whose tip is the body side when the body is attached to the body. The skin temperature is measured by bringing it into contact with the skin by exposing it from the surface of the side housing at a predetermined height, and the tip of the external temperature sensor is exposed to the inside of the housing from the housing surface other than the skin side housing surface. The skin temperature sensor and the external temperature sensor are exposed by a configuration in which the external temperature is measured by interposing a gap region formed between the position of the housing surface and the tip portion from the position of the housing surface. The time until the stable period of measured temperature data that is subject to calculation of body temperature with the structure can be shortened, the front part of the skin temperature sensor is set to a predetermined height, and the external temperature sensor is exposed as the inside of the housing With tip In which it can be small variations in the measured temperature by providing an air gap region between.

It is a block diagram of the body temperature measuring apparatus which concerns on this invention. It is a block diagram of the body temperature measuring apparatus which concerns on this invention. It is a block diagram of the body temperature measuring apparatus which concerns on this invention. FIG. 2 is an explanatory diagram of a skin temperature measuring sensor and an external temperature sensor of the body temperature measuring device of FIGS. 1A to 1C. FIG. 2 is an explanatory diagram of a skin temperature measuring sensor and an external temperature sensor of the body temperature measuring device of FIGS. 1A to 1C. FIG. 2 is an explanatory diagram of a skin temperature measuring sensor and an external temperature sensor of the body temperature measuring device of FIGS. 1A to 1C. It is explanatory drawing of the mounting state of the body temperature measuring apparatus of FIG. It is explanatory drawing of the temperature measurement according to the height position of the skin temperature sensor in a body temperature measuring apparatus. It is explanatory drawing of the temperature measurement according to the height position of the skin temperature sensor in a body temperature measuring apparatus. It is explanatory drawing of the temperature measurement according to the height position of the skin temperature sensor in a body temperature measuring apparatus. It is explanatory drawing of the comparative example of the skin temperature measured with the skin temperature sensor directly contacted with skin, and the skin temperature measured with the skin temperature sensor through the housing | casing with respect to skin. It is explanatory drawing of the comparative example of the skin temperature measured with the skin temperature sensor directly contacted with skin, and the skin temperature measured with the skin temperature sensor through the housing | casing with respect to skin. It is explanatory drawing of the comparative example of the skin temperature measured with the skin temperature sensor directly contacted with skin, and the skin temperature measured with the skin temperature sensor through the housing | casing with respect to skin. FIG. 6 is an explanatory diagram of the influence on the external temperature in FIGS. 5A to 5C. FIG. 6 is an explanatory diagram of the influence on the external temperature in FIGS. 5A to 5C. FIG. 6 is an explanatory diagram of the influence on the external temperature in FIGS. 5A to 5C.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration diagram of a body temperature measurement device according to the present invention, and FIGS. 2A to 2C show explanatory views of a skin temperature measurement sensor and an external temperature sensor of the body temperature measurement device of FIGS. 1A to 1C. 1A and 1B, a body temperature measuring device 11 is attached to the body, and one surface of a housing 12 is a skin-side housing surface 13 that directly contacts the skin, and the other surface is an external housing. The surface 14 is used. The external housing surface 14 is in contact with clothing such as underwear when worn.

The casing 12 is formed of a resin such as acrylonitrile, butadiene styrene, styrene (ABS), silicon, polypropylene (PP), polyester (PE), etc. having a thickness d of about 1.5 mm (see FIGS. 2A to 2C). In the inside, a skin temperature sensor 21 is mounted on one side and an external temperature sensor 22 is mounted on the other side, and a processing circuit having at least timing means and storage means for storing measured temperature data for each elapsed time is mounted. An electronic circuit unit 31 including the electronic circuit board 31A is provided. The casing 12 is not limited to the thickness and the type of resin, and is appropriately selected in consideration of a feeling of use, durability, and the like. The present invention relates to the structure of the skin temperature sensor 21 and the external temperature sensor 22 with respect to the housing 12, and details of the processing circuit are omitted.

The skin temperature sensor 21 is exposed at a predetermined height from a skin temperature sensor hole 15 formed at a corresponding position of the skin-side housing surface 13 in the housing 12. Specifically, as shown in FIG. 2A, the tip portion of the skin temperature sensor 21 having a diameter φ (for example, φ> 1 mm, preferably φ ≧ 2 mm) has a predetermined height h1 (from the surface of the skin-side housing surface 13). h1 ≧ 0 mm), preferably 0.2 ≦ h1 <9 mm, more preferably 2 ≦ h1 <7 mm. If 0.2 ≦ h1, the measurement temperature is stable (see FIGS. 4A to 4C), and if h1 <9, the pain on the skin is reduced. Actually, h1 = 2 mm. The predetermined height is used in the present invention based on the concept including “0”. The measurement temperature at each height of the predetermined height h1 will be described with reference to FIGS. 4A to 4C.
The external temperature sensor 22 is positioned such that a tip portion of the external temperature sensor 22 is exposed to the inside of the housing 12 from the external temperature sensor hole 16 formed at a position corresponding to the external housing surface 14 in the housing 12. A gap region 22A is provided between the position of the side housing surface 14 and the tip portion. Other forms of the arrangement of the external temperature sensor 22 in the housing 12 will be described later.

Specifically, as shown in FIG. 2B, the tip of the external temperature sensor 22 having a diameter φ (for example, φ> 1 mm) is a predetermined distance h2 (h2>) from the surface of the external housing surface 14 to the inside of the housing. 0 mm), preferably in a state where the casing 12 is exposed and positioned with a thickness d> h2> 0.2 mm, whereby the surface of the outer casing surface 14 and the tip of the external temperature sensor 22 A gap region 22A is formed between the portions. If h2> 0.2, there is little contact with clothes fibers and the like, and if the casing thickness d> h2, entry of foreign matter such as dust into the casing 12 can be reduced. Actually, h2 = 0.5 mm. In FIG. 2B, the tip portion of the external temperature sensor 22 is shown as being located in the middle of the thickness of the housing 12, but it may be located inside the housing 12, in which case What is necessary is just to perform processing, such as a seal, in order to prevent a foreign material and water from entering.

The skin temperature sensor 21 and the external temperature sensor 22 may have the same structure or different structures. In the case of the same structure, as shown in FIG. 2C, the diameter φ (for example, φ> 1 mm). (Preferably φ ≧ 2 mm) and a cylindrical shape with a stainless steel tip closed with a thickness d1 (eg, d1 = 0.1 mm), and a temperature measuring element 23 such as a thermistor is in contact with the tip of the inner tip For example, it is formed by being fixed with a fixing resin 24. It is considered that there is a case where the above-mentioned diameter is φ <1 and skin pain may be felt. Further, the diameter φ may be the same or different for the skin temperature sensor 21 and the external temperature sensor 22, but the corresponding skin temperature sensor hole 15 and external temperature sensor for the housing 12 respectively. It is preferably substantially the same as the hole 16, which can reduce the gap and enhance the waterproof performance. The material of the skin temperature sensor 21 and the external temperature sensor 22 is not made of stainless steel, and a metal such as aluminum or copper can also be used. Further, the thickness d1 may be arbitrarily determined from the thermal conductivity and strength using the characteristics of the metal used.

Therefore, FIG. 3 shows explanatory views of the mounted state of the body temperature measuring device of FIGS. 1A to 1C, and FIGS. 4A to 4C show explanatory views of temperature measurement according to the height position of the skin temperature sensor in the body temperature measuring device. Show. In FIG. 3, the body temperature measuring device 11 is attached between a body, for example, skin 41 and clothing 42 such as underwear. In this case, the skin-side housing surface 13 of the body temperature measuring device 11 directly contacts the skin 41, and the tip portion of the skin temperature sensor 21 protruding at a predetermined height directly contacts the skin 41 in a slightly indented state. .
In addition, the outer casing surface 14 of the body temperature measuring device 11 is in contact with the garment 42, but the exposed tip portion of the external temperature sensor 22 is not in direct contact with the garment 42. The gap region 22A is interposed therebetween. That is, the external temperature sensor 22 is not directly in contact with the garment 42 through the gap region 22A, and therefore the temperature is measured without being affected by frictional heat with the garment 42.

4A shows the measured temperature when the height of the tip of the skin temperature sensor 21 is changed. The temperature measurement in this case is shown as a case of measuring for 3 hours at 15 minute intervals. That is, when the height of the tip portion of the skin temperature sensor 21 is “−1 mm” (inside the housing of the skin-side housing surface 13), the reference object (Ref) is “0.2 mm”, “2 mm”. , “3 mm”, “5 mm”, “7 mm”, the average value, maximum value (MAX), minimum value (30 ° C. and after) of skin (body surface) temperature (° C.) after 30 minutes and after wearing ( MIN), temperature difference between maximum value and minimum value, and standard deviation (σ). In addition, when the height is 9 mm or more, temperature measurement is not performed because the measurer feels pain.

From each numerical value of FIG. 4A, when the height of the tip portion of the skin temperature sensor 21 from the skin-side housing surface 13 is 0 mm or more as compared with the reference object (Ref), the standard deviation variation after 60 minutes varies. As shown in FIG. 4B, the variation can be reduced to 0.2 or less as much as possible, and the temperature difference between the maximum value and the minimum value after 60 minutes is 1 ° C. as shown in FIG. 4C. It can be made to be the following. In addition, it was confirmed that the skin temperature sensor 21 is equivalent even if the thickness d1 shown in FIG.

Subsequently, FIGS. 5A to 5C show explanatory diagrams of comparative examples of the skin temperature measured by the skin temperature sensor brought into direct contact with the skin and the skin temperature measured by the skin temperature sensor through the housing with respect to the skin. FIGS. 6A to 6C are explanatory views of the influence on the external temperature in FIGS. 5A to 5C. FIG. 5A to FIG. 5C show the temperature when the skin temperature is measured by bringing the exposed tip portion of the skin temperature sensor 21 into direct contact with the skin and when the skin temperature is measured over the housing provided on the inner wall of the housing. FIG. 6A to FIG. 6C show the tip portion of the skin temperature sensor 21. The time when the measurement is 36 ° C. or more and the time when the variation of the standard deviation is 0.2 or less and the standard deviation value are shown. The time when the temperature measurement by the external temperature sensor 22 is 35 ° C. or more, the time when the variation of the standard deviation is 0.2 or less, and the standard deviation value in the case of being placed over the case and the case of being arranged over the housing are shown. . The casing uses ABS resin having a thickness of 1 mm.

The time until the skin temperature sensor 21 is stabilized by exposing the tip portion as shown in FIGS. 5A and 5B in the case where the tip portion is exposed and the case where the tip portion is exposed through the housing. Is extremely short, and it is confirmed that the time until the stable period of the measured temperature data to be calculated for body temperature is shortened, and as shown in FIGS. 5A and 5C, the tip portion is exposed. It was confirmed that the variation in standard deviation after 30 minutes and after 60 minutes was small.
Further, in the temperature measurement by the external temperature sensor 22 at this time, as shown in FIGS. 6A and 6B, the time until the external temperature is stabilized when the front end portion of the skin temperature sensor 21 is exposed is extremely short. It is confirmed that the time until the stable period of the measured temperature data to be calculated for body temperature is shortened, and as shown in FIGS. 6A and 6C, the front end portion of the skin temperature sensor 21 is displayed. It was confirmed that the variation in standard deviation after 30 minutes and after 60 minutes of the external temperature was small.

As described above, the skin temperature sensor 21 is exposed at a predetermined height from the skin-side housing surface 13, and the external temperature sensor 22 is further positioned at the inside of the housing so that the outer-side housing surface By providing the air gap region 22A between the position 14 and the tip portion so as to be exposed, it is possible to reduce the time until the stable period of the measurement temperature data to be calculated for the body temperature. It is possible to reduce the variation of.
By the way, it is good also as a structure which supports the skin temperature sensor 21 with elastic members, such as a spring. The skin temperature sensor 21 is structured to move up and down in a range of preferably 10 mm>h1> 0.1 mm, more preferably 3 mm>h1> 0.5 mm with respect to the skin-side housing surface 13, so that the device itself is skinned. Even when the skin temperature sensor 21 is away from or close to the skin 41, the skin temperature sensor 21 can always be in contact with the skin 41, and more accurate temperature can be measured than when the skin temperature sensor 21 is away from the skin 41.

In addition, in the said embodiment, although the housing | casing is shown as a substantially rectangular parallelepiped shape, the shape of a housing | casing, such as a cone and an ellipsoid, is not limited to this. In this case, it is preferable to have a flat and stable shape having a predetermined contact area so that the pressure on the skin concentrates and does not cause pain when worn.
Moreover, the external temperature sensor 22 should just be a position which does not contact skin when a housing | casing is mounted | worn with a body. That is, it may be a place other than the planned contact surface of the housing at the time of wearing, and more preferably, it is provided on the opposite side of the skin temperature sensor that is not easily affected by the radiation of the body temperature as in the above embodiment.

The body temperature measuring device of the present invention can be used in industrial fields such as manufacture, sale, and use of a device that identifies body temperature by wearing the body and measuring skin temperature and external temperature.

DESCRIPTION OF SYMBOLS 11 Body temperature measuring device 12 Case 13 Skin side case surface 14 External side case surface 15 Skin temperature sensor hole 16 External temperature sensor hole 21 Skin temperature sensor 22 External temperature sensor 22A Gap area 23 Temperature measuring element 24 Fixing resin 31 Electronic Circuit Unit 31A Electronic Circuit Board 41 Skin 42 Clothing

Claims

A body temperature measuring device that is attached to the body, measures skin temperature and external temperature for specifying body temperature, and stores at least elapsed time and measured temperature data,
A housing to be worn on the body;
A skin temperature sensor that measures the skin temperature in contact with the skin of the body, the tip portion is exposed at a predetermined height from the surface of the skin-side housing that is the body side when attached to the body,
The front end portion is located on the inside of the housing from the housing surface other than the skin side housing surface, and a gap region is provided between the front surface portion and the position on the housing surface to measure the external temperature. An external temperature sensor to
A body temperature measuring device comprising: