JP2018165680A - Measuring device and measuring garment to which the measuring device is attached - Google Patents

Abstract

A measuring device capable of easily measuring body data and a measurement garment equipped with the measuring device are provided. A measuring device is provided with a stretchable member, a strain body connected to the stretch member, a strain body, and deforms together with the strain body when the stretch member is pulled, and measures a tensile amount of the stretch member. A strain measuring unit, and the strain measuring unit has at least one strain gauge whose grid direction is parallel to the tensile direction. The measurement garment is provided with a measurement device, is made of a fiber material, and has a spring constant smaller than that of the elastic member. [Selection] Figure 1

Description

  The present invention relates to a measuring device using a strain gauge and a measuring garment to which the measuring device is attached.

  As a measurement method using a strain gauge, for example, in Patent Document 1, when a strain gauge sensor is attached to a bone portion of a measurement underwear (bra) and the user wears the measurement underwear, it is detected by the sensor. A technique has been proposed in which the measured data is transmitted wirelessly to a measuring device and the fit of the underwear is measured. With this technology, the user can easily select an undergarment that fits him / her.

JP-A-6-49703

Generally, the bone part of a brassiere differs in shape, position and flexibility for each manufacturer. Therefore, even if the brassiere is selected to fit based on the measurement data detected by the sensor attached to the measurement underwear in Patent Document 1, when the user actually tries on, There may be cases where the fit is not satisfactory.
In addition, since the measurement undergarment is made of a fabric having low elasticity similar to that of a normal brassiere, the measurement is performed in a state where the body is matched to the shape of the measurement undergarment. Therefore, since the measurement data of the corrected body is different from the original body data, there may be cases where the data is insufficient.
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a measuring device capable of easily measuring original body data and a measurement garment to which the measuring device is attached.

The measuring device of the present invention comprises:
An elastic member;
A strain body connected to the elastic member;
A strain measuring unit that is provided on the strain body and deforms together with the strain body when the stretch member is pulled, and measures a tensile amount of the stretch member;
With
The strain measuring unit has at least one strain gauge whose grid direction is parallel to the tensile direction.

The strain measuring unit is
Two strain gauges provided on the surface of the strain body,
Two strain gauges provided on the back surface of the strain body,
Have
A Wheatstone bridge circuit is composed of four strain gauges.
It is preferable.

The elastic member and the strain body are formed in an annular shape,
It is preferable.

A measuring garment to which the measuring device of the present invention is attached,
The measurement garment is made of a fiber material and has a spring constant smaller than that of the elastic member.

(A) is the schematic of the measuring apparatus which concerns on 1st Embodiment of this invention, (b) is the circuit diagram of the distortion measurement part. (A) is the schematic of the measuring apparatus which concerns on 2nd Embodiment of this invention, (b) is a circuit diagram of the distortion | strain measurement part. It is the schematic of the measuring apparatus which concerns on 3rd Embodiment of this invention. The 1st application example of the clothes for measurement to which the measuring device of the present invention was attached is shown. It is a circuit diagram of the distortion measurement part to which electric power feeding is carried out. The 2nd application example of the clothes for measurement to which the measuring device of the present invention was attached is shown.

Fig.1 (a) is the schematic of the measuring apparatus which concerns on 1st Embodiment of this invention.
The measuring device 10 a includes a long elastic member 1, a strain body 2 connected to one end of the stretch member 1, and a strain measurement unit 3 a provided on the strain body 2. When the stretchable member 1 is pulled, the strain measuring unit 3a is deformed together with the strain generating body 2, and measures the tensile amount ΔL of the stretchable member 1. The strain measuring unit 3a has one strain gauge R1 whose grid direction is parallel to the tensile direction. When the elastic member 1 is pulled by ΔL, the strain measuring unit 3a is deformed together with the strain body 2 and measures the tensile amount ΔL of the elastic member 1.
The elastic member 1 is rubber or the like having a strain level of 200 to 300%. The strain body 2 is a metal having a strain level of 0.5% or less. That is, the Young's modulus of the elastic member 1 is smaller than the Young's modulus of the strain body 2.
FIG.1 (b) is a circuit diagram of the distortion | strain measurement part of the measuring apparatus which concerns on 1st Embodiment of this invention.
The strain measuring unit 3a includes a strain gauge R1 and three fixed resistors R2, R3, and R4, and the strain gauge R1 and the three fixed resistors R2, R3, and R4 constitute a Wheatstone bridge circuit.
Using the measuring device 10a, the size of the body, for example, the length of the arm or the thickness of the arm can be measured. For example, when measuring the length of the arm, the strain body 2 is fixed to the shoulder, and the other end of the stretchable member 1 (the side opposite to the one end connected to the strain body 2 of the stretchable member 1) is pulled to the wrist and stretched. The tensile amount ΔL of the member 1 is measured.

FIG. 2A is a schematic diagram of a measuring apparatus according to the second embodiment of the present invention, and FIG. 2B is a circuit diagram of the strain measuring unit.
In the measuring apparatus 10 b, two long elastic members 1 are connected to both ends of the strain body 2. The strain measurement unit 3b includes four strain gauges R1_T, R2_C, R3_T, and R4_C, of which two strain gauges R1_T and R2_C are provided on the surface of the strain generating body 2, and the remaining two strain gauges R3_T and R4_C are provided. It is provided on the back surface of the strain body 2. The first strain gauge R1_T provided on the surface of the strain body 2 and the third strain gauge R3_T provided on the back surface of the strain body 2 have two grid members whose grid direction is parallel to the tensile direction. Measure the total ΔL1 + ΔL2 of the tensile amount of 1. The second strain gauge R2_C provided on the surface of the strain generating body 2 and the fourth strain gauge R4_C provided on the back surface of the strain generating body 2 have the grid direction perpendicular to the tensile direction and measure the amount of compression. . A Wheatstone bridge circuit is configured by the four strain gauges R1_T, R2_C, R3_T, and R4_C.
By providing four strain gauges R1_T, R2_C, R3_T, and R4_C on the front and back of the strain generating body 2, temperature correction can be performed, bending strain can be canceled, and tensile strain can be detected efficiently.

FIG. 3 is a schematic view of a measuring apparatus according to the third embodiment of the present invention.
In the measuring device 10c, one end of one long stretchable member 1 is connected to one end of the strain body 2, and the other end of the stretch member 1 is connected to the other end of the strain body 2, so that the stretch member 1 and the strain body 2 is formed in an annular shape.
The arm thickness and the like can be easily measured by the measuring device 10c.
The elastic member 1 and the elastic body 2 may be connected by providing an opening in the elastic body 2 and passing the elastic member 1 through the opening. The strain measuring unit 3c may be the strain measuring unit 3a shown in FIG. 1 or the strain measuring unit 3b shown in FIG.

FIG. 4 shows a first application example of the measurement garment to which the measurement apparatus of the present invention is attached.
As shown in FIG. 4 (a), a total of seven measuring devices 10, one for the neck, one for each of the two arms, one for each wrist, one for the chest, and one for the abdomen, are used for measuring the turtleneck shape. Attached to the garment 100. The measurement garment 100 is made of, for example, a fiber material such as tights or stockings, has a spring constant smaller than that of the elastic member 1, and easily expands, so that it does not affect the tension of the elastic member 1.
As shown in FIG. 4B, when a user (not shown) wears the measurement clothes 100, the measurement clothes 100 and the measurement apparatus 10 are pulled in accordance with the user's body. As described above, when the user wears the measurement clothes 100 to which the plurality of measuring devices 10 are attached, the measurement of a plurality of body parts is performed at the same time, so that measurement is facilitated. For example, when a user purchases clothes by mail order, the body part can be measured by wearing such measurement clothes 100, so purchase clothes of a size suitable for himself without trying on clothes. can do.
The number of measuring devices 10 is not limited to the illustrated example.

Each tensile amount (measurement value) of the measuring device 10 is transmitted to the logger by wire or wirelessly. In addition, data may be transmitted from the logger to a smartphone or the like.
In the illustrated example, only the abdominal measurement device 10 is connected to the logger, but the other six measurement devices 10 are also connected to the logger. Further, the measuring device 10 may be supplied with power from a logger by wire, or may be supplied wirelessly as shown in FIG.

FIG. 5 is a circuit diagram of a strain measurement unit that is wirelessly fed.
The strain measurement unit 3d is the same as the strain measurement unit 3b in FIG. 2B except that the strain measurement unit 3d includes an LC resonance circuit in which the power receiving coil L2 and the capacitor C are connected in parallel. The magnetic flux generated from the power feeding coil L1 on the power transmission side generates an induced electromotive voltage in the power receiving coil L2, and the capacitor C is charged. The bridge circuit operates using the capacitor C as a power source, and detects and outputs a tensile strain.
Although not shown, the feeding coil L1 and the receiving coil L2 are shared as an antenna for near field communication (NFC) or the like, and the output of the strain measurement unit 3d is wirelessly transmitted to the power transmission side. Also good. In this case, the power transmission side functions as a reader, which is an alternative to the logger shown in FIG.

FIG. 6 shows a second application example of the measurement garment to which the measurement apparatus of the present invention is attached.
FIG. 6 shows a cross section of the buttock, and a total of three measuring devices 10, one on the abdomen side, one on the right buttock, and one on the left buttock, are attached to the tights-shaped measurement garment 200. In addition, a state before the user wears the measurement clothes 200 is indicated by a broken line.
Thus, the detailed dimension of a buttock can be measured by using the measurement garment 200 to which a plurality of measuring devices 10 are attached.

  In addition, although the measuring apparatus of this invention has demonstrated as an example measuring the size of a body, it can also be used in order to measure a motion of a body. For example, the movement of the body can be measured by detecting a change in a state where the elbow is bent from a state where the elbow is extended. In addition, other sensors such as a bending sensor may be used so that the movement of the body can be measured with higher accuracy.

DESCRIPTION OF SYMBOLS 1 Elastic member 2 Strain body 3 Strain measuring part 10 Measuring apparatus 100 Clothes for measurement 200 Clothes for measurement

Claims (4)

An elastic member;
A strain body connected to the elastic member;
A strain measuring unit that is provided on the strain body and deforms together with the strain body when the stretch member is pulled, and measures a tensile amount of the stretch member;
A measuring device comprising:
The strain measuring unit has at least one strain gauge whose grid direction is parallel to the tensile direction.
measuring device. The strain measuring unit is
Two strain gauges provided on the surface of the strain body,
Two strain gauges provided on the back surface of the strain body,
Have
A Wheatstone bridge circuit is composed of four strain gauges.
The measuring apparatus according to claim 1. The elastic member and the strain body are formed in an annular shape,
The measuring apparatus according to claim 1 or 2. A measuring garment to which the measuring device according to claim 1 is attached,
The measurement garment is made of a fiber material and has a smaller spring constant than the elastic member.
Measurement clothes.

Images