JPH04116743U - thermometer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a thermometer that can safely, quickly, and reliably measure body temperature even in seriously ill people and children. [Structure] A pad 2 in which optical fibers 3 are arranged and embedded in a flat plane in a single stroke, and a thin cover layer 7 is provided on the side of the pad 2 that contacts the human body 20, centering on the layer where the optical fibers 3 are present. A thick base body 9 is provided on the side that does not come into contact with the human body, and an adhesive or compound 10 is filled between the cover layer 7 and the base body 9 to form an integrated pad 2, and the optical fiber exposed outside the pad. The OTDR measuring device 5 is connected to one end of the OTDR measuring device 5 via a connector.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a thermometer.

0002

[Conventional technology]

Conventional thermometers, mercury meters, or even electronic thermometers are placed under the armpit or in the mouth for a certain period of time. It was to be measured.

0003

[Problem that the idea aims to solve]

However, when measuring the body temperature of a seriously ill person or child, the body temperature may not be able to move or be maintained. Accurate measurements may not be possible due to

0004 The present invention eliminates these drawbacks and safely and quickly measures body temperature even in the case of seriously ill people and children. The object of the present invention is to provide a thermometer that can measure the temperature reliably.

[0005]

[Means to solve the problem]

The thermometer of this invention is a package in which optical fibers are arranged flat in a single stroke pattern and embedded. The pad is in contact with the human body, centering on the layer where the optical fiber is present. This cover has a thin cover layer on the side and a thick base on the side that does not come into contact with the human body. A pad that is integrated by filling an adhesive or compound between a layer and a substrate, and the pad OTDR measurement device connected to one end of the above optical fiber taken out via a connector It is composed of

[0006]

[Effect]

The pad has a thin cover centered on the layer where the optical fiber is located, and the side that comes in contact with the human body. Since it is a bar layer, the sensitivity of the optical fiber to body temperature is not impaired. Also The side of the pad that does not come into contact with the human body is made of a thick base, making it difficult for the pad to bend. Because of this, optical fibers experience extreme optical loss due to pad bending. It cannot be damaged or damaged. Therefore, this pad quickly and stably reduces body temperature. can be sensed. The OTDR measuring device uses this pad as a sensor part and uses an optical fiber. Linear temperature distribution is measured from the backward Raman scattered light of the fiber to measure body temperature. Yo This makes it possible to measure the body temperature of people who are seriously ill, such as children, while they are lying down.

[0007]

【Example】

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0008] In Fig. 1, 1 is the sensor part of the thermometer, and an optical fiber is inserted into the planar pad 2. Arrange the optical fibers 3 uniformly in a single stroke, and put one end of the optical fiber 3 outside the pad 2. The connector 4 is attached to this portion. In Figure 1, the sensor The optical fiber 3 of section 1 is folded back and undulated to form a wavy (zigzag) arrangement. However, the present invention is not limited to this, and the optical fibers 3 may be arranged in a spiral shape as shown in FIG. 2, for example. . 5 is connected to one end of the optical fiber 3 from which the pad 1 comes out via the connector 4 This is an OTDR measuring device 5, and together with the sensor section 1, constitutes a thermometer. This measurement The device 5 uses the OTDR (Optical Time Domain Reflectometry) method to detect backward radiation. The linear temperature distribution along the optical fiber 3 is measured from the Mann scattered light, and the sensor unit 1 Measure the temperature of.

[0009] As shown in FIG. For example, it is used by pasting it on the chest with double-sided tape or the like. For this reason The structure of the sensor part 1 is such that body temperature is immediately transmitted to the optical fiber 3, and the pad 2 is used. It is required that the optical fiber 3 is not damaged by being bent during the process. .

0010 FIG. 4 shows the structure of the pad 2. The optical fiber 3 is centered on the layer where the optical fiber 3 exists. The optical fiber 3 is placed as close to the human body as possible on the side of the head 2 that contacts the human body 20. A thin cover layer 7 is provided to increase sensitivity to body temperature. It also comes into contact with the human body. On the side without the contact pad, the pad 2 bends during handling and exposes the optical fiber 3 to extreme light. A thick base 9 is provided to prevent loss or damage. And this cover An adhesive or compound 10 is filled between the layer 7 and the base 9 to form an integrated structure. ing. In addition, 8 is applied to the surface of the thin film cover layer 7 when attaching the pad 2 to the human body. This is the compound layer that is applied.

[0011] In the case of this embodiment, the thin film cover layer 7 is an ultra-thin film with a thickness of 100 μm or less. and strong (i.e. high tear strength) plastic sheeting such as polyester. The optical fiber 3 is installed so as to be in close contact with this material, and an adhesive ( After fixing it so that it does not move in step 10), place a thick plastic sheet on top of it. The pad 2 is constructed by attaching and collectively fixing a base body 9 consisting of the following. However, in addition to plastic, the cover layer 7 and base 9 that make up the pad 2 are made of rubber. It is also possible to use materials such as the following.

[0012] In the measurement, as shown in FIG. 3, the subject to be measured, such as a seriously ill person or child, is placed in a state of being laid down on a futon, and the pad 2 having the above structure is attached to the measurement area such as the chest using double-sided tape or the like. At that time, a compound 8 is applied to the contact surface of the pad 2 so that the temperature can be transferred quickly. The optical fiber 3 of the sensor section 1 is then connected to the measuring device 5 using the connector 4. Temperature distribution measurement using Raman scattered light by the measuring device 5 involves injecting light with a wavelength λ ₀ , a pulse width Tw, and a pulse period Tp from one end of an optical fiber, and detecting two components of the Raman scattered light generated within the optical fiber. The backscattered light of Stokes light with wavelength λs and anti-Stokes light with wavelength λas are measured as time functions ρs(t) and ρas(t), respectively, with the pulsed light incident time t=0, and these The ratio ρas(t) /ρs(t) is purely a function of temperature, and the time it takes the backscattered light returning from the distance L in the optical fiber to reach the end of the optical fiber changes the luminous flux in the optical fiber. Assuming C ₀ , the linear temperature distribution along the optical fiber 3, that is, the temperature over the entire surface of the pad 2 is measured using the fact that 2L/C ₀ from the pulse light incident time. Then, the body temperature detected by the pad 2 is displayed on a display device (not shown). Measurement of body temperature by this measuring device 5 is instantaneous.

[0013] Therefore, according to this thermometer, when a seriously ill person or child is lying on a futon, Just by connecting the connector to the measuring device, you can instantly check your body temperature without taking much time. Additionally, if the connector is connected at all times, changes in body temperature over a 24-hour period can be measured.

[0014] In the above embodiment, the pad 2 is formed into a rectangular plate shape, but the size of the pad 2 is The shape of the sheath is not limited to this, but it can be cloth-like with some degree of flexibility. Alternatively, it may be a three-dimensional object such as a futon or a pillow. Especially if the futon or pillow is covered with light. With the Fiber 3 sewn in, body temperature can be measured without causing discomfort to patients. Ru. Additionally, by embedding sensors throughout the futon, it is possible to measure differences in temperature in various parts. .

[0015]

[Effect of the idea]

As mentioned above, the present invention uses mercury, alcohol, and Using an optical fiber instead of a couple and embedding it in a flat pad to create a sensor The linear temperature component is measured from the backward Raman scattered light of the optical fiber using an OTDR measurement device. Since body temperature is measured by cloth measurement, safety, speed, and reliability are improved. The pad has a thin cover centered on the layer where the optical fiber is located, and the side that comes in contact with the human body. layer, so the sensitivity of the optical fiber to body temperature is not impaired. Also, The side of the pad that does not come into contact with the human body is made of a thick base, so the pad may break easily. Optical fibers do not suffer from excessive optical loss or damage due to bending, etc. . Therefore, even if a person is seriously ill or a child, their body temperature can be measured while they are lying down. Ru.

[Brief explanation of drawings]

[Figure 1] Diagram showing the appearance of the thermometer of the present invention and the arrangement of optical fibers

[Figure 2] Diagram showing a modified example of the arrangement of optical fibers in the pad

[Figure 3] Diagram showing the cross-sectional structure of the pad

[Figure 4] Explanation of the actual usage status of the sensor part of the thermometer

[Explanation of symbols]

1 Sensor part 2 pad 3 Optical fiber 4 Connector 5 OTDR measurement device 7 Thin cover layer 8 Compound layer 9 Thick base 10 Adhesive or filler compound 20 Human body

Claims (1)

[Scope of utility model registration request] Claim 1: A pad in which optical fibers are arranged and embedded in a plane in a single stroke, and a thin cover layer is provided on the side of the pad that contacts the human body, centering on the layer where the optical fiber is present, and A thick base is provided on the side that does not come into contact with the
The feature is that it is composed of a pad that is integrated by filling adhesive or compound between the cover layer and the base, and an OTDR measurement device that is connected to one end of the optical fiber that is exposed outside the pad via a connector. A thermometer.