阅读说明：本技术 光纤拉力测量装置及系统 (Optical fiber tension measuring device and system ) 是由 吉鹏勃 范鸿 于 2021-08-25 设计创作，主要内容包括：本申请涉及光纤拉力测量装置及系统,具体而言,涉及拉力检测领域。本申请提供的光纤拉力测量装置包括：光源、第一受力部、第二受力部、弹性部、光纤和光探测器,当需要对拉力进行检测时,将拉力作用于该光纤拉力测量装置的第一受力部和第二受力部,在第一受力部和第二受力部的作用下,该弹性部发生形变,该弹性部并将拉力和压力作用于该光纤使得该光纤发生形变,进而改变该光纤的传输损耗,从而使得光信号通过光纤出射的光强发生改变,通过该光探测器对该光信号的出射光强进行检测,并根据该光强与待测拉力的对应关系,得到待测拉力。(The application relates to an optical fiber tension measuring device and system, in particular to the field of tension detection. The application provides an optical fiber tension measuring device includes: the light source, first atress portion, the second atress portion, the elastic component, optic fibre and light detector, when needs examine the pulling force, act on this optic fibre pulling force measuring device's first atress portion and second atress portion with the pulling force, under the effect of first atress portion and second atress portion, this elastic component takes place deformation, this elastic component makes this optic fibre take place deformation with pulling force and pressure action in this optic fibre, and then change the transmission loss of this optic fibre, thereby make the light intensity that the light signal passes through the optic fibre emergence change, detect the emergent light intensity of this light signal through this light detector, and according to this light intensity and the tensile corresponding relation that awaits measuring, obtain the pulling force that awaits measuring.)

1. An optical fiber tension measuring device, comprising: light source, first atress portion, second atress portion, elastic component, optic fibre and optical detector, the elastic component parcel sets up the outside of optic fibre, the light source with optical detector sets up respectively the elastic component with the both ends of optic fibre, the light source is used for producing light signal, and will light signal passes through optic fibre transmits to optical detector is last, optical detector is used for detecting the light intensity of the light signal of optic fibre output, first atress portion parcel sets up the outside of light source, and with the elastic component with optic fibre is kept away from optical detector's one end is connected, second atress portion parcel sets up optical detector's outside, and with the elastic component with optic fibre is kept away from optical source's one end is connected.

2. The optical fiber tension measuring device according to claim 1, wherein the optical fiber wrapped by the elastic portion has a curved shape.

3. The optical fiber tension measuring device according to claim 1, wherein the optical fiber wrapped by the elastic portion has a helical structure.

4. The optical fiber tension measuring device according to claim 2 or 3, wherein a rigid strip is provided between the optical fiber and the elastic portion, and the rigid strip is wound around an outer periphery of the optical fiber.

5. The optical fiber tension measuring device according to claim 4, wherein the first force receiving portion and the second force receiving portion are each provided with a connecting portion.

6. The optical fiber tension measuring device according to claim 5, wherein the optical fiber at a position intermediate between the light source and the light detector is provided with a groove.

7. The optical fiber tension measuring device according to claim 5, wherein the optical fiber at a position intermediate between the light source and the light detector is provided with a plurality of grooves, and distances between the plurality of grooves are equal.

8. An optical fiber tension measuring system, comprising: the optical fiber tension measuring device comprises a processor, a display and the optical fiber tension measuring device as claimed in any one of claims 1 to 7, wherein the display and the processor are sequentially electrically connected with an optical detector of the optical fiber tension measuring device, the processor is used for obtaining tension to be measured according to the relation between the emergent light intensity of the optical fiber and the tension to be measured, and the display is used for displaying the obtained tension to be measured.

Technical Field

The application relates to the field of tension detection, in particular to an optical fiber tension measuring device and system.

Background

The tensile force is within the elastic limit, and the deformation of the object under the action of external force is in direct proportion to the external force. The deformation varies with the direction in which the force is applied, and the force that extends an object is called "pulling force" or "tension".

In the prior art, the tension is mainly measured by a spring exerciser, and the calculation principle of the spring exerciser is calculated by the formula f = w/s, wherein f represents the tension, w represents the length, s represents the elastic coefficient of the spring,

however, when the tension detection device of the mechanical structure in the prior art detects tension, the tension detection device itself may also deform under the action of tension, generally, when calculating tension, the deformation of the tension detection device itself is ignored, and the tension to be detected is obtained only by calculating the deformation amount of the detection part of the tension detection device and the elastic coefficient of the detection part, so that certain error exists in the detection of tension, and the detection of tension is inaccurate.

Disclosure of Invention

The invention aims to provide an optical fiber tension measuring device and an optical fiber tension measuring system aiming at the defects in the prior art, and the optical fiber tension measuring device and the optical fiber tension measuring system aim to solve the problem that when a tension detecting device of a mechanical structure in the prior art detects tension, the tension detecting device can deform under the action of the tension, generally, when the tension is calculated, the deformation of the tension detecting device is ignored, and the tension to be measured is obtained only by calculating the deformation quantity of a detecting part of the tension detecting device and the elastic coefficient of the detecting part, so that certain error exists in the detection of the tension, and the detection of the tension is inaccurate.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, the present application provides an optical fiber tension measuring device, comprising: the light source, first atress portion, the second atress portion, the elasticity portion, optic fibre and light detector, elasticity portion parcel sets up the outside at optic fibre, light source and light detector set up the both ends at elasticity portion and optic fibre respectively, the light source is used for producing light signal, and pass through optic fibre with light signal and transmit to light detector on, light detector is used for detecting the light intensity of the light signal of optic fibre output, first atress portion parcel sets up the outside at the light source, and keep away from the one end of light detector with elasticity portion and optic fibre and be connected, the outside at light detector is set up to the parcel of second atress portion, and keep away from the one end of light source with elasticity portion and optic fibre and be connected.

Optionally, the optical fiber wrapped by the elastic part is in a bent shape.

Optionally, the optical fiber wrapped by the elastic part is in a spiral structure.

Optionally, a rigid strip is disposed between the optical fiber and the elastic portion, and the rigid strip is wound around the outer circumference of the optical fiber.

Optionally, the first force-receiving portion and the second force-receiving portion are each provided with a connecting portion.

Optionally, the optical fiber intermediate the light source and the light detector is provided with a groove.

Optionally, the optical fiber at the middle position between the light source and the light detector is provided with a plurality of grooves, and the distances between the grooves are equal.

In a second aspect, the present application provides a tension measuring system comprising: the optical fiber tension measuring device comprises a processor, a display and the optical fiber tension measuring device of any one of the first aspect, wherein the display and the processor are sequentially electrically connected with an optical detector of the optical fiber tension measuring device, the processor is used for obtaining tension to be measured according to the relation between the emergent light intensity of the optical fiber and the tension to be measured, and the display is used for displaying the obtained tension to be measured.

The invention has the beneficial effects that:

the application provides an optical fiber tension measuring device includes: the optical fiber sensor comprises a light source, a first stress part, a second stress part, an elastic part, an optical fiber and an optical detector, wherein the elastic part is wrapped outside the optical fiber; when tension needs to be detected, tension acts on a first stress part and a second stress part of the optical fiber tension measuring device, the elastic part deforms under the action of the first stress part and the second stress part, the elastic part acts on the optical fiber to deform the optical fiber through tension and pressure, and further transmission loss of the optical fiber is changed, so that light intensity of an optical signal emitted through the optical fiber is changed, the emergent light intensity of the optical signal is detected through the optical detector, tension to be detected is obtained according to the corresponding relation between the light intensity and the tension to be detected, the tension is converted into the change condition of the optical signal by the optical fiber tension measuring device, so that the detection of the tension by the optical fiber tension measuring device is more accurate, the tension acts on the optical fiber by the optical fiber, the optical fiber deforms under the action of the tension, and the transmission loss of the deformed optical fiber is changed, detection portion and deformation portion in this application all only optic fibre and elastic component promptly, do not have the deformation of being neglected, and then this application causes the transmission loss of optic fibre because the pulling force through light intensity signal reflection, and then make the pulling force that this application calculation obtained more accurate, in addition because this application realizes the measuring to the pulling force through optical parameter's change, optical parameter's sensitivity and detection precision are all great, then make the pulling force's that obtains of calculation sensitivity and precision also relatively higher, further solve prior art and detect the inaccurate problem of pulling force.

Drawings

Fig. 1 is a schematic structural diagram of an optical fiber tension measuring apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another optical fiber tension measuring device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another optical fiber tension measuring apparatus according to an embodiment of the present invention.

Icon: 10-a light source; 20-an optical fiber; 30-an elastic portion; 40-a light detector; 50-a first force-receiving portion; 60-second force-bearing part.

Detailed Description

The purpose, technical solution and advantages of the embodiments of the present invention will be more clearly understood, and the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

Fig. 1 is a schematic structural diagram of an optical fiber tension measuring apparatus according to an embodiment of the present invention; as shown in fig. 1, the present application provides an optical fiber tension measuring apparatus, comprising: the light source 10, the first stress part 50, the second stress part 60, the elastic part 30, the optical fiber 20 and the optical detector 40, the elastic part 30 is wrapped and arranged outside the optical fiber 20, the light source 10 and the optical detector 40 are respectively arranged at two ends of the elastic part 30 and the optical fiber 20, the light source 10 is used for generating an optical signal and transmitting the optical signal to the optical detector 40 through the optical fiber 20, the optical detector 40 is used for detecting the light intensity of the optical signal output by the optical fiber 20, the first stress part 50 is wrapped and arranged outside the light source 10 and connected with one ends, far away from the optical detector 40, of the elastic part 30 and the optical fiber 20, and the second stress part 60 is wrapped and arranged outside the optical detector 40 and connected with one ends, far away from the light source 10, of the elastic part 30 and the optical fiber 20.

The optical fiber 20 is externally wrapped with an elastic portion 30, i.e. the optical fiber 20 and the elastic portion 30 are integrated, the two ends of the optical fiber 20 are respectively provided with a light source 10 and a light detector 40, the light source 10 is used for generating a light signal, the light signal passes through the optical fiber 20 to reach the light detector 40, the light detector 40 is used for detecting the light intensity of the light signal output by the optical fiber 20, the first stress portion 50 and the second stress portion 60 are respectively wrapped outside the light source 10 and the light detector 40, the first stress portion 50 and the second stress portion 60 are basically identical in structure, shape and size, so that the first stress portion 50 near one end of the light source 10 is called a first stress portion 50, the second stress portion 60 near one end of the light detector 40 is called a second stress portion 60, because the elastic portion 30 wraps the optical fiber 20, the elastic portion 30 is stretched under the action of tensile force, the stretched elastic portion 30 applies pressure and tensile force to the optical fiber 20, the transmission loss of the optical fiber 20 is changed, and further the light intensity of the emergent light passing through the optical fiber 20 is changed, the light intensity of the emergent light before and after the optical fiber 20 is stressed is compared, and the pressure to be detected can be directly obtained according to the corresponding relation between the change condition of the light intensity and the tension to be detected, when the tension needs to be detected, the tension is acted on the first stress part 50 and the second stress part 60 of the optical fiber tension measuring device, under the action of the first stress part 50 and the second stress part 60, the elastic part 30 is deformed, the elastic part 30 acts the tension and the pressure on the optical fiber 20 to deform the optical fiber 20, and further the transmission loss of the optical fiber 20 is changed, so that the light intensity of the optical signal emitted through the optical fiber 20 is changed, the light intensity of the optical signal emitted through the optical detector 40 is detected, and according to the corresponding relation between the light intensity and the tension to be detected, the tension to be measured is obtained, and the tension is converted into the change condition of the optical signal, so that the optical fiber tension measuring device is more accurate in tension detection, and the problem that the chest expander is inaccurate in detection after being used for a period of time is avoided. In practical applications, the size of the optical fiber 20 is determined according to practical needs, and is not particularly limited herein.

The application has the specific beneficial effects that: first, the design reflects the magnitude of the pulling force by measuring the changing spectral information, and converts the measurement of the pulling force into the detection of the spectrum, and the design has high sensitivity because the change of light is sensitive. Secondly, the device utilizes the optical fiber 20 to transmit signals with low loss and strong anti-interference capability, so the measured signals are slightly influenced by the loss of the device and the interference of external signals, and the accurate tension can be realized. Third, the device can be measured multiple times since the elastic material will spontaneously return to its original shape after the measurement is completed.

FIG. 2 is a schematic structural diagram of another optical fiber tension measuring device according to an embodiment of the present invention; as shown in fig. 2, the optical fiber 20 wrapped by the elastic portion 30 is optionally in a curved shape.

The elastic part 30 is arranged outside the bent optical fiber 20, after the elastic part 30 is deformed, the bent optical fiber 20 can apply larger pressure and tension to the bent optical fiber 20, so that the transmission loss of the optical fiber 20 is changed and increased, and the light intensity change before and after the deformation of the elastic part 30 detected by the optical detector 40 is larger, and further, the detection of the tension is more accurate and sensitive, in practical application, the optical fiber 20 wrapped by the elastic part 30 is set to be in a bent shape, and the design enables the stretching distance of the optical fiber 20 in the axial direction of the optical fiber 20 when the tension is applied to be larger, so that the transmission loss in the optical fiber of the optical fiber 20 is changed to a greater extent, and the change of the light intensity reaching the optical detector 40 under the same tension is larger compared with the design in fig. 1. Thereby increasing the sensitivity of the measurement.

Optionally, the optical fiber 20 wrapped by the elastic portion 30 has a spiral structure (not shown).

The optical fiber 20 wrapped by the elastic part 30 is set to be in a spiral structure, and the optical fiber 20 in the spiral structure is subjected to larger pressure and larger pulling force under the condition that the elastic part 30 is deformed, so that when the spiral optical fiber 20 is subjected to the pulling force, the stretching distance of the optical fiber 20 in the axial direction of the optical fiber 20 is further increased, the refractive change rate of the optical fiber 20 is changed more, and the change of the optical information reaching the optical detector 40 in comparison with the design is larger under the same pulling force. Thereby increasing the sensitivity of the measurement.

Alternatively, a rigid strip is disposed between the optical fiber 20 and the elastic portion 30, and the rigid strip is wound around the outer circumference of the optical fiber 20.

The rigid strip is disposed between the optical fiber 20 and the elastic portion 30, the elastic portion 30 applies a force to the rigid strip, since the rigid strip has a high hardness and a gap is formed when the rigid strip is wound, the force is applied to the optical fiber 20 through the rigid strip, and the contact area between the rigid strip and the optical fiber 20 is small compared to the contact area when the rigid strip is not disposed, and if the pressure applied to the rigid strip is not changed, the pressure applied to the optical fiber 20 through the rigid strip is increased, that is, the deformation amount of the optical fiber 20 is made larger, so that the transmission loss of the optical fiber 20 is made larger, and the change in output light intensity is made more remarkable.

Alternatively, the first force receiving portion 50 and the second force receiving portion 60 are each provided with a connecting portion.

The first force-receiving portion 50 and the second force-receiving portion 60 are provided at both ends thereof with connecting portions for connecting with the outside, for example, when the pulling force between two planes needs to be detected, the connecting portions at both sides of the first force-receiving portion 50 and the second force-receiving portion 60 are respectively connected with the two planes, the pulling force between the two planes is directly obtained through calculation, and for example, the pulling force between two hands needs to be detected, the connecting portions of the first force-receiving portion 50 and the second force-receiving portion 60 may be provided as pull rings, and the pulling force of both hands is applied to the first force-receiving portion 50 and the second force-receiving portion 60 through the pull rings so as to detect the pulling force between both hands.

FIG. 3 is a schematic structural diagram of another optical fiber tension measuring device according to an embodiment of the present invention; as shown in fig. 3, the optical fiber 20 at a position intermediate the light source 10 and the light detector 40 is optionally provided with a groove.

Optionally, the wall of the groove is provided with noble metal particles, when light enters the optical fiber 20, the noble metal particles arranged on the wall of the groove resonate, when the optical fiber 20 is pulled, the distance between two ends of the groove is increased, the resonant wavelength changes, so that when the optical fiber is pulled, not only the light intensity changes, but also the resonant wavelength changes, the change of the light received by the optical detector is changed, and the sensitivity is further increased.

Alternatively, the optical fiber 20 at a position intermediate the light source 10 and the light detector 40 is provided with a plurality of grooves, and the distances between the plurality of grooves are equal.

The setting of a plurality of recess cycles is on this optic fibre 20 for this optic fibre 20 divide into the multistage under the effect of pulling force, and the volume of the recess between the multistage optic fibre 20 is enlarged, and then makes the transmission loss of this optic fibre 20 change under the effect of pulling force bigger, thereby makes the detection to pulling force more accurate, sensitive, and in practical application, the distance between this recess and the quantity of this recess are decided according to actual need, do not specifically prescribe a limit herein.

The application provides an optical fiber tension measuring device includes: the light source 10, the first stress part 50, the second stress part 60, the elastic part 30, the optical fiber 20 and the optical detector 40, the elastic part 30 is wrapped and arranged outside the optical fiber 20, the light source 10 and the optical detector 40 are respectively arranged at two ends of the elastic part 30 and the optical fiber 20, the light source 10 is used for generating optical signals and transmitting the optical signals to the optical detector 40 through the optical fiber 20, the optical detector 40 is used for the light intensity of the optical signals output by the optical fiber 20, the first stress part 50 is wrapped and arranged outside the light source 10 and connected with one ends, far away from the optical detector 40, of the elastic part 30 and the optical fiber 20, and the second stress part 60 is wrapped and arranged outside the optical detector 40 and connected with one ends, far away from the light source 10, of the elastic part 30 and the optical fiber 20; when the pulling force needs to be detected, the pulling force acts on the first stress part 50 and the second stress part 60 of the optical fiber pulling force measuring device, under the action of the first stress part 50 and the second stress part 60, the elastic part 30 deforms, the elastic part 30 acts the pulling force and the pressure on the optical fiber 20 to deform the optical fiber 20, and further the transmission loss of the optical fiber 20 is changed, so that the light intensity of the optical signal emitted through the optical fiber 20 is changed, the light intensity of the light signal emitted through the optical detector 40 is detected, the pulling force to be detected is obtained according to the corresponding relation between the light intensity and the pulling force to be detected, and as the pulling force is converted into the change condition of the optical signal by the application, the detection of the pulling force by the optical fiber pulling force measuring device is more accurate, and the problem that the detection of the pulling force device is inaccurate after the optical fiber pulling force measuring device is used for a period of time is avoided.

The application provides a tension measurement system, tension measurement system includes: the optical fiber tension measuring device comprises a processor, a display and any one of the optical fiber tension measuring devices, wherein the display and the processor are sequentially electrically connected with an optical detector 40 of the optical fiber tension measuring device, the processor is used for obtaining tension to be measured according to the relation between the emergent light intensity of the optical fiber 20 and the tension to be measured, and the display is used for displaying the obtained tension to be measured.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.