JPH02265527A - Skin temperature measurement method and device used therefor - Google Patents

Abstract

PURPOSE:To measure skin temperature as a beauty index by pressing the skin to a sensing part elastically provided, and sensing the skin temperature with a thermocouple with the contact pressure of the sensing part kept constant. CONSTITUTION:A skin temperature measurement device is equipped with a measurement tool 1 having a sensing part 1a for sensing skin temperature, and a body part 2 having a recess part 2a. The body part 2 has a built in processing circuit for processing data detected at the measurement tool 1, and result of the process is displayed with a display means 3. The measurement tool 1 has a casing 10, a sleeve 12 pressed outward with a compression spring 11 and a sensor disc 13. The center bent part 14a of an iron plate 14 is pressed to the skin to detect the temperature thereof. Both ends 14b of the iron plate 14 are welded to the external surface of a small disc 15, and the ends of an alumel wire 16 and a chromel wire 17 are connected to the inner surface of the small disc 15. The other ends of the wires 16 and 17 are connected to a circuit board 18. A conductive body is exposed at the center of a skin temperature sensing part and a thermocouple is connected to the body, thereby enabling accurate skin temperature measurement free from the influence of room temperature and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for measuring human skin temperature and an apparatus used therefor.

[Conventional technology and its problems]

In general, young people tend to have good blood circulation and high skin temperature, but it is not common to use skin temperature as an indicator of beauty. This is thought to be because skin temperature changes slightly depending on the environmental temperature and physical condition, and a skin thermometer with excellent performance that can detect these subtle changes has not been developed. For example, to measure skin temperature, use an ordinary thermometer (
Temperature sensors) may be used, but the values measured by such thermometers are affected by room temperature, etc., and are not objective, so it is not possible to evaluate the skin based on these measured values. Met.

The present invention was made in view of the above circumstances, and aims to provide an objective method for measuring skin temperature that can be used as an indicator of beauty, and a device used therefor.

[Means for solving problems]

In order to achieve the above object, the present invention presses a skin temperature sensing part composed of a small-area conductor against the skin with a constant contact pressure to bring the conductor to the same temperature as the skin temperature. One end of a thermocouple made up of two different types of metal wires is connected, the thermoelectromotive force generated in the thermocouple circuit is extracted as an electrical signal, and the skin temperature is calculated from this electrical signal. The first gist is a skin temperature measuring method in which the skin temperature is determined, and includes a rod-shaped measuring tool whose tip is pressed against the skin surface to measure the skin temperature, and a main body connected to this measuring tool, A skin temperature sensing part is elastically attached to the tip of the tool, a conductor is exposed in a small area in the center of the skin temperature sensing part, and two different types of conductors are attached to the conductor.
One end side of a thermocouple constituted by a metal wire is connected, and a take-out means is provided for taking out the thermoelectromotive force generated in the circuit of the thermocouple as an electric signal, and the output from the take-out means is provided within the main body. The second gist is a skin temperature measuring device that is provided with an arithmetic processing circuit that receives an electrical signal and calculates the skin temperature, and a display means that displays the skin temperature based on the processed signal output from the arithmetic processing circuit.

[Effect]

That is, the present invention makes it possible to press the skin temperature sensing part against the skin surface with a constant contact pressure, exposes a conductor at the center of the skin temperature sensing part, and connects a thermocouple to this conductor. Since the skin temperature is measured using the same method, it is possible to accurately measure objective skin temperature that is not affected by room temperature or the like. Moreover, the measuring device of the device can be shaped into a rod shape, making it easy to handle. Also,
Since thermocouples are inexpensive, they also have the advantage that the device can be manufactured at low cost.

Next, the present invention will be explained in detail based on examples.

〔Example〕

FIG. 1 shows an embodiment of a skin temperature measuring device according to the present invention. This device includes a rod-shaped measuring tool 1 whose tip is formed as a sensing part 1a for sensing skin temperature, and a main body 2 having a recess 2a into which the tip of the measuring tool 1 can be inserted and held. There is. The main body 2 has a built-in predetermined processing circuit for processing sensing data from the measuring tool 1, and the processing results are displayed on the display means 3 attached to the front of the main body 2. It looks like this. Note that 4 is switches for instructing various operations and turning the power on and off.

As shown in FIG. 2, the measuring tool 1 includes a pencil-shaped casing 10 and a resin sleeve attached to the tip of the casing 10 in a state in which it is pressed outward by a compression spring 11. 12 and this sleeve 12
It has a sensing disc 13 made of resin that is fitted into the tip of the disc from the inside.

As shown in FIG. 3, the sensing disk 13 has a steel plate 14 bent in a U-shape at its central bent portion 14a.
It is embedded with the part exposed to the outside. This central bent portion 14a is pressed against the skin and functions to sense the skin temperature. Further, both bent ends 14b of the iron plate 14 are integrally attached by welding to the outer surface of a small circular plate 15 made of iron that is fitted into the inner stepped portion 12a of the sleeve 12. On the inner surface of this small disk 15,
One end of the alumel wire 16 and the chromel wire 17 are connected by soldering, and the other ends of these two wires 16 and 17 are also soldered onto an elongated board 18 extending in the axial direction inside the casing 10. installed.

In this way, an alumel-chromel thermocouple circuit is formed within this casing 10. In addition, 1
9 is a guide for fixing the board 18 in the casing 10, and 20 is a hand switch for supplying current to the thermocouple circuit to sense the temperature. Further, changes in the thermoelectromotive force generated in the thermocouple circuit are transmitted as electrical signals into the main body 2 via a cord 50 connected to the upper end of the substrate 18. Therefore, when the hand switch 20 of the measuring tool 1 is turned on, the sleeve 1
When the tip of the sleeve 12 is pressed against the skin, the central bent portion 14a of the iron plate 14 exposed at the tip of the sleeve 12 changes to the skin temperature. A thermoelectromotive force is generated according to the This thermoelectromotive force is transmitted into the main body 2 by the cord 50. However, to accurately measure the amount of thermoelectromotive force,
Since the iron plate 14a must be at the same temperature as the skin, it is necessary to press the iron plate 14a against the skin for a sufficient amount of time to warm the iron plate 14a. For this reason, a buzzer mechanism (not shown) is installed inside the casing 10 so that the buzzer continues to sound until the time required to accurately measure the amount of thermoelectromotive force has elapsed.

Reference numeral 21 denotes a connecting cord that connects the bundled cord 50 pulled out of the casing 10 to the main body 2, and is formed into a coil shape so that the measuring tool 1 can be easily handled. (see figure). In addition, the above casing 1
A plurality of annular grooves 23 are formed in parallel on the outer circumferential surface near the hand switch 20 of 0, forming an uneven surface. This serves to prevent the measuring tool 1 from slipping when gripped.

On the other hand, the main body 2 is provided with a recess 25 into which the tip of the measuring tool 1 is inserted and held, as shown in FIG. The opening edge 26 of this recess 2a is slightly raised to prevent dirt and dust from entering the recess 2a from the surrounding area. Moreover, the upper end opening of the recess 2a is
It is formed to be significantly larger than the outer diameter of the measuring tool 1 to be inserted, and the diameter of this opening gradually decreases toward the bottom. This pot-shaped part 25 is a switch 2 that protrudes outside of the casing 10 when the tip of the measuring tool 1 is inserted.
0 or the iron plate 14 that is the measurement part is provided so that it does not hit the inner wall surface of the recess 2a, so no matter which direction the measuring tool 1 is inserted, the switch 20 or the iron plate 14 will hit the recess 2a and damage one of them. I never do. and,
A gentle step 2 formed on the lower side of the pot-shaped part 25
7, the first inner wall 28 formed to have a smaller diameter guides the outer circumference of the casing 10 of the measuring tool 1, and the step 29 below supports the casing 10. 2 Ru. Further, a second inner wall 30 extending downward from this step 29 is adapted to guide the outer periphery of the sleeve 12 of the measuring tool 1, and the sleeve 12 is supported by the step 31 below. In this way, the casing 10 and sleeve 12 are separated by two steps 29 and 3.
1 are supported at the same time because if only one side is supported, the elongated rod-shaped measuring tool 1 tends to wobble in the horizontal direction when inserted into the main body 2.

Note that inside the main body section 2, as shown in FIG.
a reading means 40 for reading data on thermoelectromotive force generated in the thermocouple circuit in the measuring instrument 1; and this reading means 40.
an amplifier 41 for amplifying the output signal from the amplifier 4;
A converter 42 that converts the analog output from the measuring device 1 into a digital output, and an arithmetic processing circuit 43 that performs arithmetic processing on the converted digital output signal and outputs the skin temperature sensed by the measuring device 1 as a numerical signal. There is. A display means 3 for converting the output signal from the circuit 43 into a visual numerical display is provided on the front surface of the main body 2 (see FIG. 1).

Using this skin temperature measuring device, skin temperature can be measured, for example, in the following manner. First, the measuring tool 1 is pulled out from the recess 2a of the main body 2, and the power switch of the main body 2 is turned on. Then, the environmental temperature is measured by turning on the hand switch 20 of the measuring tool 1 and leaving the measuring tool 1 alone until the buzzer finishes sounding. The measured environmental temperature is numerically displayed by the display means 3 of the main body part 2. Next, place the tip of the measuring tool 1 at a predetermined position on the face (for example, on the cheek).
Press it with a constant force until the buzzer stops sounding. As a result, the display on the display means 3 changes to the sensed skin temperature. Therefore, the measurer can read the environmental temperature and the skin temperature sequentially. In addition,
The numerical value displayed by the display means 3 is different from the normal temperature in degrees Celsius, and indicates the value when the temperature is 35.0"C.
0, and the case of 38.0°C is expressed as r40. O
It is displayed as J, and the range is divided and displayed in 0°1 increments.

As described above, according to this skin temperature measuring device, since the sensing part that senses the skin temperature is elastically attached to the tip of the measuring tool 1 by the compression spring 11, it is placed at a certain angle with respect to the elastic skin. Even if the pressing force of the measuring tool 1 changes due to the tilting of the measuring tool 1, the sensing part will always be pressed with a constant contact pressure. Therefore, skin temperature measurements are very accurate. Since the conductive part that senses the skin temperature is formed by the iron plate 14 exposed in a small area at the center of the sensing part, the heat capacity of this part is small and the temperature easily changes to the same temperature as the skin temperature. Easily pressed against the skin. Therefore, the time required for sensing the skin temperature is short, and combined with the fact that the sensing section is elastic, the temperature does not deviate from the value. Further, this device has the advantage that input operations are simple and it can be manufactured at a lower cost than devices using temperature sensors. Furthermore, since the tip sensing part of the measuring tool 1 is made of resin except for the iron plate 14 which is exposed in a small area, unlike metal or the like, it does not absorb skin temperature and cause the sensor to sense a temperature lower than the actual temperature. Also, when pressed, there is no feeling of coldness or discomfort like that of metal (it does not cause unnecessary tension to the person taking the measurement).

Therefore, this device is installed at the storefront of cosmetics stores,
If you prepare a numerical table (see table below) showing the skin temperature of healthy skin according to age and environmental temperature through sampling in advance, store staff can easily measure the customer's skin temperature and compare it against this table. Since the customer's skin condition can be evaluated based on the skin condition of the customer, it is possible to recommend cosmetics suited to the customer's skin and provide appropriate services.

(Left below) In the above embodiment, alumel wire and chromel wire are used as the metal wires for constructing the thermocouple circuit, but in addition to these, platinum wire - platinum rhodium wire, iron wire - constant A combination of wire, copper wire-constant wire, etc. may also be used. However, since the combination of the above-mentioned alumel wire and chromel wire has the best temperature sensing accuracy, this combination can be said to be optimal.

Further, although the display means 3 of the above embodiment displays numerical values, appropriate advice may be displayed in text depending on the measurement results, or the numerical values in the table above may be displayed in advance. Enter this value in advance, and have the processing circuit in the main unit 2 compare this value with the measured value.
, rNORMALJ, rLOWJ, etc. may be displayed. Also, regardless of visual display,
Measured values and advice may be output as audio.

〔Effect of the invention〕

As described above, the skin temperature measuring method of the present invention is different from the conventional method in that the elastically attached sensing part is pressed against the skin, so pressing is the contact of the sensing part with the skin regardless of the conditions. The pressure becomes constant. Since the skin temperature is sensed using a thermocouple, an objective skin temperature that is unaffected by the environmental temperature can be obtained with a simple operation. Therefore, by measuring the environmental temperature at the time of skin temperature measurement and also measuring the skin temperature, the skin temperature can be used as a beauty index in relation to the environmental temperature. The skin temperature measuring device according to this method has the advantage of being easy to handle and inexpensive to manufacture.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the skin temperature measuring device according to the present invention, Fig. 2 is a longitudinal sectional view showing the measuring device of the above embodiment, and Fig. 3 is an exploded perspective view showing details inside the measuring device. Figure, 4th
The figure is a partial longitudinal cross-sectional view showing the main body of the above embodiment.
The figure is a configuration diagram showing a circuit system in the main body. 1... Measuring tool 2... Main body 3... Display means
14... Iron plate 14a... Center bent part 16.
...Alumel wire 17...Chromel wire 22...Connection code 40...Reading means 43...Arithmetic processing circuit, 50...Code

Claims (3)

[Claims] (1) A skin temperature sensing part with a small conductor exposed in the center is pressed against the skin with a constant contact pressure to bring the conductor to the same temperature as the skin temperature, and two metal wires of different types are attached to the conductor. The thermoelectromotive force generated in the thermocouple circuit is extracted as an electrical signal by connecting one end of a thermocouple composed of , and the skin temperature is calculated from this electrical signal to determine the skin temperature. Characteristic skin temperature measurement method. (2) It has a rod-shaped measuring device whose tip is pressed against the skin surface to measure skin temperature, and a main body connected to this measuring device, and the skin temperature sensing part is elastically attached to the tip of the measuring device. A conductor is exposed in a small area at the center of the skin temperature sensor, and one end of a thermocouple made of two different metal wires is connected to this conductor. An extraction means for extracting thermoelectromotive force generated in the circuit as an electric signal is provided, and within the main body, an arithmetic processing circuit that receives the electrical signal output from the extraction means and calculates the skin temperature, and an output from the arithmetic processing circuit. 1. A skin temperature measuring device comprising: display means for displaying skin temperature based on a processed signal. (3) The skin temperature measuring device according to claim (2), wherein the skin temperature sensing section is formed of resin.