CN110672240A - Static friction force measuring device based on optical fiber - Google Patents
Static friction force measuring device based on optical fiber Download PDFInfo
- Publication number
- CN110672240A CN110672240A CN201911011457.1A CN201911011457A CN110672240A CN 110672240 A CN110672240 A CN 110672240A CN 201911011457 A CN201911011457 A CN 201911011457A CN 110672240 A CN110672240 A CN 110672240A
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- static friction
- channel
- optical fiber
- measuring device
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- 230000003068 static effect Effects 0.000 title claims abstract description 35
- 239000013307 optical fiber Substances 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims 4
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to a static friction force measuring device based on optical fibers, which comprises a main body, wherein a force application part is arranged on the main body, a channel is arranged in the main body, and a detection optical fiber is arranged in the channel; the middle section of the channel is an inclined channel, a branch channel perpendicular to the inclined channel is arranged at the inclined channel, and elastic filler is arranged in the branch channel and is in contact with the detection optical fiber; this static friction measuring device is through converting static friction into light signal to monitor static friction, only need detect light signal's change, just can carry out dynamic monitoring to static friction, thereby can reflect the size of static friction in real time, compare with prior art, this measuring device measuring static friction has higher accuracy, and measuring mode is simple moreover, only needs place the device in and waits to detect the object top, just can detect.
Description
Technical Field
The invention relates to the technical field of static friction force detection, in particular to a static friction force measuring device based on optical fibers.
Background
Stiction is the force that an object experiences to resist the tendency of relative motion of the object when the object has a tendency to move relative to the surface of another object, but no relative motion occurs. An object is changed relative to the static friction force of the object along with the change of the external force, and when the static friction force is increased to the maximum static friction force, the object moves. The static friction force varies according to the external force, but has a maximum value called a maximum static friction force. The maximum static friction force is slightly greater than the sliding friction force.
In the prior art, the method for determining the static friction is generally to use a spring dynamometer to hook a measured object by a hook and perform uniform linear motion on the surface of a horizontal object (opposite), and the number indicated on the spring dynamometer is the magnitude (rough) of the friction force of the measured object, and the tension of the spring is equal to the friction force.
Disclosure of Invention
The invention aims to provide an optical fiber-based static friction force measuring device, which comprises a main body, wherein a force application part is arranged on the main body, a channel is arranged in the main body, and a detection optical fiber is arranged in the channel; the middle section of the channel is an inclined channel, a branch channel perpendicular to the inclined channel is arranged at the inclined channel, and an elastic filler is arranged in the branch channel and is in contact with the detection optical fiber.
The section of the force application part is a right triangle.
The bottom surface of the elastic filler is provided with a bulge.
The protrusions are hemispherical.
The inclined channel is parallel to one surface of the force application part, which applies external force.
The invention has the beneficial effects that: the static friction force measuring device based on the optical fiber provided by the invention can be used for monitoring the static friction force by converting the static friction force into the optical signal, and can be used for dynamically monitoring the static friction force only by detecting the change of the optical signal, so that the size of the static friction force can be reflected in real time.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an optical fiber-based static friction force measuring device.
Fig. 2 is a schematic structural diagram of a static friction force measuring device based on an optical fiber.
Fig. 3 is a schematic structural diagram three of the optical fiber-based static friction force measuring device.
In the figure: 1. a main body; 2. a force application part; 3. detecting the optical fiber; 4. a channel; 5. an elastic filler; 6. a protrusion; 7. a force application part; 8. the optical fiber is detected.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.
Example 1
The embodiment provides an optical fiber-based static friction force measuring device as shown in fig. 1 to 3, which includes a main body 1, a force application part 2 is placed on the main body 1, the force application part 2 is used for applying an external force, a channel 4 is arranged in the main body 1, and a detection optical fiber 3 is arranged in the channel 4; the channel 4 is divided into a left section, a middle section and a right section, wherein the left section is a horizontal channel section, the middle section is an inclined channel 7, the right section is a horizontal channel section, but the right section is wider than the left section, the width of the right section is the sum of the height of the inclined channel 7 and the width of the left section, a branch channel 8 perpendicular to the inclined channel 7 is arranged at the inclined channel 7, an elastic filler 5 is arranged in the branch channel 8, and the elastic filler 5 is in contact with the detection optical fiber 3; like this, when exerting external force for application of force portion, just can make elastic filler 5 receive the frictional force on the object surface that awaits measuring, because the effect of stiction, elastic filler 5 can extrude detection optic fibre 3, thereby make the transmissivity of the light that passes through in the detection optic fibre 3 change, only need detect the change of the transmissivity of the light that pressure detection optic fibre 3 inside passes through, just can detect stiction, because the transmissivity of the light that detects the inside light that passes through of optic fibre 3 detects more conveniently, and have better flexibility, convert stiction into optical signal, just so can be easier detection stiction.
Further, the elastic filler 5 is made of any one of rubber, foam, and the like.
Furthermore, the section of the force application part 2 is a right triangle, and a right-angled inclined surface of the force application part 2 is parallel to the inclined channel 7 and the surface of the force application part 2 applying external force.
Furthermore, the bottom surface of the elastic filler 5 is provided with a plurality of protrusions 6, so that friction force can be increased, the elastic filler 5 can better collide with the detection optical fiber 3, and the transmittance of light propagating in the detection optical fiber 3 can be changed more obviously. In addition, the bottom of the protrusion 6, that is, the position close to the bottom surface, is filled with a flexible transparent material, so that when the protrusion 6 is deformed, the shape of the flexible transparent material is greatly changed, which further changes the transmission characteristic of the detection optical fiber 3, thereby improving the detection sensitivity.
Further, the protrusion 6 is a hemisphere, and may be configured in other shapes, such as a cylinder, and a square.
In conclusion, this static friction measuring device based on optic fibre is through converting the static friction into optical signal to monitor the static friction, only need detect optical signal's change, just can carry out dynamic monitoring to the static friction, thereby can reflect the size of static friction in real time, compares with prior art, and the static friction that this measuring device measured has higher accuracy, and measuring method is simple moreover, only needs place the device in and wait to detect the object top, just can detect.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (5)
1. The utility model provides a static friction measuring device based on optic fibre which characterized in that: the device comprises a main body (1), wherein a force application part (2) is arranged on the main body (1), a channel (4) is arranged in the main body (1), and a detection optical fiber (3) is arranged in the channel (4); the middle section of the channel (4) is an inclined channel (7), a branch channel (8) perpendicular to the inclined channel (7) is arranged at the inclined channel (7), an elastic filler (5) is arranged in the branch channel (8), and the elastic filler (5) is in contact with the detection optical fiber (3).
2. An optical fiber-based stiction force measurement device according to claim 1, wherein: the section of the force application part (2) is a right-angled triangle.
3. An optical fiber-based stiction force measurement device according to claim 1, wherein: the bottom surface of the elastic filler (5) is provided with a bulge (6).
4. An optical fiber-based stiction force measurement device according to claim 3, wherein: the protrusions (6) are hemispherical.
5. An optical fiber-based stiction force measurement device according to claim 1, wherein: the inclined channel (7) is parallel to one surface of the force application part (2) applying external force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911011457.1A CN110672240B (en) | 2019-10-23 | 2019-10-23 | Static friction force measuring device based on optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911011457.1A CN110672240B (en) | 2019-10-23 | 2019-10-23 | Static friction force measuring device based on optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110672240A true CN110672240A (en) | 2020-01-10 |
| CN110672240B CN110672240B (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911011457.1A Active CN110672240B (en) | 2019-10-23 | 2019-10-23 | Static friction force measuring device based on optical fiber |
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| CN (1) | CN110672240B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5987995A (en) * | 1997-07-17 | 1999-11-23 | Sentec Corporation | Fiber optic pressure catheter |
| CN106644226A (en) * | 2017-02-06 | 2017-05-10 | 中国航天空气动力技术研究院 | Frictional resistance calibrating device aiming at liquid crystal coating |
| CN108495589A (en) * | 2016-01-25 | 2018-09-04 | 富士胶片株式会社 | Insert and attachment component |
| CN108760109A (en) * | 2018-03-22 | 2018-11-06 | 湖北省路桥集团有限公司 | The soil pressure measuring device and method of changeable fluid based on bragg grating |
| CN109406018A (en) * | 2018-11-02 | 2019-03-01 | 格力电器（武汉）有限公司 | A kind of sliding feeling sensor and the clamping device including the sliding feeling sensor |
-
2019
- 2019-10-23 CN CN201911011457.1A patent/CN110672240B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5987995A (en) * | 1997-07-17 | 1999-11-23 | Sentec Corporation | Fiber optic pressure catheter |
| CN108495589A (en) * | 2016-01-25 | 2018-09-04 | 富士胶片株式会社 | Insert and attachment component |
| CN106644226A (en) * | 2017-02-06 | 2017-05-10 | 中国航天空气动力技术研究院 | Frictional resistance calibrating device aiming at liquid crystal coating |
| CN108760109A (en) * | 2018-03-22 | 2018-11-06 | 湖北省路桥集团有限公司 | The soil pressure measuring device and method of changeable fluid based on bragg grating |
| CN109406018A (en) * | 2018-11-02 | 2019-03-01 | 格力电器（武汉）有限公司 | A kind of sliding feeling sensor and the clamping device including the sliding feeling sensor |
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| Publication number | Publication date |
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| CN110672240B (en) | 2021-07-30 |
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