CN211477580U - Prism refractive index measuring device based on mobile phone APP - Google Patents
Prism refractive index measuring device based on mobile phone APP Download PDFInfo
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- CN211477580U CN211477580U CN202020103094.6U CN202020103094U CN211477580U CN 211477580 U CN211477580 U CN 211477580U CN 202020103094 U CN202020103094 U CN 202020103094U CN 211477580 U CN211477580 U CN 211477580U
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- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 abstract description 19
- 230000001133 acceleration Effects 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
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- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
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Abstract
The utility model provides a measuring device of prism refracting index based on cell-phone APP. The measuring device includes: the device comprises a laser source, a rotary platform and an angle measuring clamp; the laser source is used for outputting laser; the rotary platform is used for adjusting the direction of the prism to be measured relative to the laser; the angle measuring clamp is used for measuring a first light direction of laser light before refraction of the triple prism and a second light direction of the laser light after refraction of the triple prism by using a mobile phone. The utility model discloses a measuring device structure is simple easily to be made, practices thrift the cost greatly, and in actual angular surveying process, utilizes the gyroscope sensor and the accelerometer of cell-phone self-band to realize angle measurement and two main functions of refractive index calculation based on cell-phone APP, has saved the link of manual calculation, and measuring method is simple swift.
Description
Technical Field
The utility model relates to a refractometry technical field especially relates to a measuring device of prism refracting index based on cell-phone APP.
Background
At present, in the experimental teaching for measuring the refractive index of a prism, a spectrometer is generally used for measuring the minimum deviation angle and the prism angle of light after being refracted twice by the prism, but the spectrometer has complex structure ratio and high cost, and the adjustment of the spectrometer is very complicated in the process of measuring the angle (refer to 'Zhang Yaman, Xufei, Chenyulin', an adjustment method for measuring the vertex angle of the prism by the spectrometer [ J ]. experimental science and technology, 2008(03):33-34+ 97.), and the operation is not easy.
With the rapid development of society, smart phones have entered the daily lives of people and become an indispensable article for people, and general smart phones are equipped with various sensors such as force, heat, sound, electricity and magnetism and a GPS positioning system and can download corresponding application software. The application software can realize the following physical quantities: like the measurement of time, length, angle, slope, distance, height, area, pressure, sound intensity level, magnetic induction intensity etc. so how to provide a measuring device based on cell-phone measures the prism refracting index under this background, can practice thrift the cost of experimental device on the one hand, and on the other hand also makes the experimentation can be more simple and convenient easy to operate, is the problem that needs to solve at present.
Disclosure of Invention
For solving the spectrometer structure that uses in the experiment of current prism refractive index measurement complicated, and the loaded down with trivial details problem of spectrometer regulation when measuring the angle, the utility model provides a measuring device of prism refractive index based on cell-phone APP.
The utility model provides a measuring device of prism refracting index based on cell-phone APP, include: the device comprises a laser source, a rotary platform and an angle measuring clamp;
the laser source is used for outputting laser;
the rotary platform is used for adjusting the direction of the prism to be measured relative to the laser;
the angle measuring clamp is used for measuring a first light direction of laser light before refraction of the triple prism and a second light direction of the laser light after refraction of the triple prism by using a mobile phone.
Further, rotary platform includes the bottom plate, fixes the back shaft on the bottom plate and can follow the carousel of back shaft rotation, be provided with the recess that is used for fixed prism on the carousel.
Furthermore, a through hole is formed in the supporting shaft, a two-section type round table is arranged in the middle of the rotary table, and the small diameter end of the two-section type round table is matched with the through hole.
Further, the groove is a triangular groove arranged in the middle of the rotary disc.
Further, angle measurement anchor clamps are including the clamping part that is used for fixed cell-phone, the supporting part that is located the clamping part top and set up the cross arch on the supporting part, the collimation slit has been seted up on the cross arch, clamping part, supporting part and the protruding integrated into one piece of cross.
Further, the clamping part comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are respectively located on two sides of the supporting part and are perpendicular to the supporting part, and the distance between the first clamping plate and the second clamping plate is matched with the width of the mobile phone.
Further, still include: a support table for supporting the angle measurement jig.
The utility model has the advantages that:
compare the spectrometer that uses in the traditional measuring method in prism refracting index, (the spectrometer structure is comparatively complicated, and the accommodation process when measuring the angle also too loaded down with trivial details complicacy), the utility model provides a prism refracting index measuring device based on cell-phone detaches indispensable laser source, the utility model discloses the measuring device of embodiment only includes rotary platform and collimation slit, and the two simple easy preparation of structure practices thrift the cost greatly, and in actual angle measurement process, and measurement operation is simple swift.
Drawings
Fig. 1 is one of schematic structural diagrams of a device for measuring a refractive index of a prism based on a mobile phone APP according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a device for measuring a refractive index of a prism based on a mobile phone APP according to an embodiment of the present invention;
fig. 3 is a cross-sectional view of a rotary platform according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an angle measuring clamp according to an embodiment of the present invention;
fig. 5 is a schematic flowchart of a measuring method of the measuring apparatus for measuring the refractive index of the prism based on the mobile phone APP according to the embodiment of the present invention;
reference numerals: 1 is a laser source; 2 is a rotary platform; 3 is an angle measuring clamp; 4, the mobile phone; 5 is a triangular prism; 21 is a bottom plate; 22 is a supporting shaft; 23 is a turntable; 24 is a groove; 25 is a through hole; 26 is a two-section type round table; 31 is a clamping part; 32 is a support part; 33 is a cross-shaped bulge; 311 is a first clamping plate; 312 is a second clamping plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following description will clearly describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The current smart phone is integrated with a gyroscope sensor and an accelerometer, and the working principle of the gyroscope sensor for measuring angles is as follows: the angle of rotation of the handset in the horizontal plane (the angle of rotation about the Z axis) is measured with a gyroscope sensor. The output of the gyroscope sensor is an angular velocity signal, and the angular velocity is required to be integrated with time to obtain an angle. The characteristics are good dynamic performance and poor static performance. The working principle of the accelerometer angle measurement is as follows: commonly used MEMS accelerometers are divided into three types: piezoelectric, capacitive, and thermal. Taking a piezoelectric MEMS accelerometer as an example (the other two are not described in detail), the piezoelectric MEMS accelerometer uses a piezoelectric effect, and has a mass block supported by a rigid body inside, and the mass block generates pressure and strain when moving, and converts the acceleration into an electrical signal for output. When the postures of the mobile phone in the space are different, the inclined acceleration of the plane of the mobile phone is measured, and the inclined angles of the plane of the mobile phone and the X-axis direction or the Y-axis direction can be obtained by comparing the principle of orthogonal decomposition with the vertical gravitational acceleration. The characteristics are good static performance and poor dynamic performance.
The utility model discloses it is based on cell-phone APP acquirees gyroscope sensor data and accelerometer data, fuses the measurement that can realize the angle to two kinds of data.
Example 1
The embodiment of the utility model provides a measuring device of prism refracting index based on cell-phone APP, measuring device includes: the device comprises a laser source 1, a rotary platform 2 and an angle measuring clamp 3; the laser source 1 is used for outputting laser; the rotary platform 2 is used for adjusting the direction of the prism 5 to be measured relative to the laser; the angle measuring clamp 3 is used for measuring a first light direction of the laser before being refracted by the triple prism 5 and a second light direction of the laser after being refracted by the triple prism 5 by using the mobile phone 4. The laser source 1 may be a he — ne laser.
The rotary platform 2 comprises a bottom plate 21, a supporting shaft 22 fixed on the bottom plate 21 and a rotary disc 23 capable of rotating along the supporting shaft 22, wherein a groove 24 for fixing the triangular prism 5 is arranged on the rotary disc 23. The supporting shaft 22 is provided with a through hole 25, the middle of the rotating disc 23 is provided with a two-section type round table 26, and the small diameter end of the two-section type round table 26 is matched with the through hole 25. The groove 24 is a triangular groove arranged in the middle of the rotating disc 23.
The angle measuring clamp 3 comprises a clamping part 31 for fixing the mobile phone 4, a supporting part 32 positioned above the clamping part 31 and a cross-shaped protrusion 33 arranged on the supporting part 32, a collimation slit is formed in the cross-shaped protrusion 33, and the clamping part 31, the supporting part 32 and the cross-shaped protrusion 33 are integrally formed. The clamping portion 31 includes a first clamping plate 311 and a second clamping plate 312, the first clamping plate 311 and the second clamping plate 312 are respectively located at two sides of the supporting portion 32, and are perpendicular to the supporting portion 32, and a distance between the first clamping plate 311 and the second clamping plate 312 is adapted to a width of the mobile phone 4.
In the practical application process, in order to enable the angle measuring clamp 3 to be matched with the height of the laser source 1, a supporting table for supporting the angle measuring clamp 3 can be further arranged, the supporting table can adopt the existing structure capable of playing a supporting role, and can also adopt a structure similar to the rotating platform 2, and the difference is that the groove 24 is not required to be designed on the supporting table.
Compared with a spectrometer used in the traditional measuring method of the refractive index of the prism, (the spectrometer has a more complex structure, and the adjusting process during angle measurement is too complicated), a gyroscope sensor and an accelerometer are generally arranged on the current smart phone, and the utility model discloses just utilize the gyroscope sensor and the accelerometer of the mobile phone on the basis of the mobile phone APP, the measurement of the angle can be realized; and arranging a collimation slit on the angle measurement clamp, and determining the direction of the laser ray by using a slender slit collimation method. The utility model provides a prism refracting index measuring device based on cell-phone detaches requisite laser source, the utility model discloses measuring device only includes rotary platform and angular surveying anchor clamps, and the two simple easy preparation of structure, accessible 3D printer directly print and obtain, practice thrift the cost greatly, and in actual angular surveying process, measure easy operation swiftly.
Example 2
The embodiment of the utility model provides a measuring method of measuring device of prism refracting index based on cell-phone, this method includes following step:
s101: enabling the mobile phone to be tightly attached to the first refraction edge of the prism to be measured, and initializing the angle measured by the mobile phone to be zero;
s102: fixing the triple prism to be still, enabling the mobile phone to be tightly attached to the second refraction edge of the triple prism, and obtaining an angle measured by the mobile phone as a prism angle;
s103: fixing the mobile phone with the angle measuring clamp;
s104: adjusting the angle measuring clamp to enable laser emitted by the laser source to pass through the collimating slit and strike on the screen, recording the position of a light spot formed on the screen by the laser at the moment as a point B, and initializing the angle measured by the mobile phone to be zero;
s105: fixing the laser source and the screen, and placing the triple prism on the rotary platform;
s106: rotating the rotary platform to find the position of a light spot which is refracted by a prism and then is irradiated on a screen and is closest to the point B, and marking the position of the light spot closest to the point B as a point C;
s107: the stationary laser source, screen and rotary platform are stationary, step S103 is performed,
s108: adjusting the angle measurement clamp to enable the laser refracted by the prism to pass through the collimation slit and strike the point C on the screen, wherein the angle measured by the mobile phone is the minimum deflection angle;
s109: and obtaining the refractive index of the prism according to the prism angle and the minimum deflection angle.
Example 3
For example, taking a prism with prism angles of 60 degrees as an example, in the measurement process, a helium-neon laser is used as a laser source, and the measurement method specifically comprises the following steps:
s201: enabling the mobile phone to be attached to one refraction edge of the triangular prism, and initializing the APP angle of the mobile phone to be zero at the moment;
s202: the prism is fixed, the mobile phone is tightly attached to the other refraction edge of the prism, and the angle of the prism can be directly read to be 60 degrees;
s203: measuring the minimum deflection angle of the laser after twice refraction by a prism by taking a helium-neon laser as a laser source;
specifically, the triangular prism is fixed inside a triangular groove of the rotary platform, and the size of the triangular groove is matched with the size of the cross section of the triangular prism; then, continuously adjusting the rotating platform until the minimum deviation angle is found; then, fixing the mobile phone and the angle measuring clamp, determining the direction of emergent rays with the minimum deviation angle by using the collimation slit, and initializing the angle measured by the mobile phone APP at the moment to be zero;
s204: taking out the prism, fixing the He-Ne laser, fixing the mobile phone and the angle measuring clamp, and determining the direction of incident light by using the collimation slit;
s205: at this time, the angle measured by the mobile phone APP is the minimum deviation angle, which is 38 degrees.
S206: according to the prism angle A (A ═ 60 degrees) and the minimum deviation anglemin(min38 degrees), the refractive index n of the prism can be calculated according to the following refractive index calculation formula.
Compare in the traditional measuring method who adopts the spectrometer to measure prism refracting index (when using the spectrometer to measure the angle, the accommodation process of spectrometer is too loaded down with trivial details complicacy), uses the utility model provides a measuring device based on cell-phone APP's prism refracting index carries out refractometry's process, and its advantage is: the angle measurement and the refractive index calculation are achieved by using the mobile phone APP based on the gyroscope sensor and the accelerometer of the mobile phone, the link of manual calculation is omitted, and the measurement method is simple and rapid.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. Measuring device of prism refracting index based on cell-phone APP, its characterized in that, measuring device includes: the device comprises a laser source, a rotary platform and an angle measuring clamp;
the laser source is used for outputting laser;
the rotary platform is used for adjusting the direction of the prism to be measured relative to the laser;
the angle measuring clamp is used for measuring a first light direction of laser light before refraction of the triple prism and a second light direction of the laser light after refraction of the triple prism by using a mobile phone.
2. The apparatus of claim 1, wherein the rotary platform comprises a base plate, a support shaft fixed on the base plate, and a turntable rotatable along the support shaft, the turntable being provided with a groove for fixing the triangular prism.
3. The device of claim 2, wherein the supporting shaft is provided with a through hole, the middle part of the turntable is provided with a two-section circular table, and the small diameter end of the two-section circular table is matched with the through hole.
4. The apparatus of claim 3, wherein the groove is a triangular groove disposed in the middle of the turntable.
5. The device of claim 1, wherein the angle measuring fixture comprises a clamping portion for fixing the mobile phone, a supporting portion located above the clamping portion, and a cross-shaped protrusion arranged on the supporting portion, wherein the cross-shaped protrusion is provided with a collimating slit, and the clamping portion, the supporting portion, and the cross-shaped protrusion are integrally formed.
6. The device of claim 5, wherein the clamping portion comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are respectively located on two sides of the supporting portion and are perpendicular to the supporting portion, and a distance between the first clamping plate and the second clamping plate is adapted to a width of the mobile phone.
7. The apparatus of claim 5, further comprising: a support table for supporting the angle measurement jig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020103094.6U CN211477580U (en) | 2020-01-17 | 2020-01-17 | Prism refractive index measuring device based on mobile phone APP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020103094.6U CN211477580U (en) | 2020-01-17 | 2020-01-17 | Prism refractive index measuring device based on mobile phone APP |
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| Publication Number | Publication Date |
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| CN211477580U true CN211477580U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020103094.6U Expired - Fee Related CN211477580U (en) | 2020-01-17 | 2020-01-17 | Prism refractive index measuring device based on mobile phone APP |
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| Country | Link |
|---|---|
| CN (1) | CN211477580U (en) |
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2020
- 2020-01-17 CN CN202020103094.6U patent/CN211477580U/en not_active Expired - Fee Related
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Granted publication date: 20200911 |