CN108732131B - Method for measuring concentration of household self-made drink - Google Patents
Method for measuring concentration of household self-made drink Download PDFInfo
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- CN108732131B CN108732131B CN201810526373.0A CN201810526373A CN108732131B CN 108732131 B CN108732131 B CN 108732131B CN 201810526373 A CN201810526373 A CN 201810526373A CN 108732131 B CN108732131 B CN 108732131B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
Abstract
The invention discloses a method for measuring the concentration of household self-made drinks, which relates to the field of kitchen utensils and comprises the following steps: firstly, collecting the offset distance of a first light ray emitted by a first light emitting module on a second light receiving module after the first light ray is refracted by a solution to be detected in a first right-angle trapezoidal counter bore at the bottom of a concentration measuring instrument; then, according to the offset distance, the first distance and the first incident angle, solving the refractive index of the solution to be detected; and then, obtaining the concentration of the solution to be detected according to the refractive index of the solution to be detected, the solute information of the solution to be detected and the solvent of the solution to be detected. The invention avoids the precision requirement of solution proportioning by a weighing method and improves the concentration precision of the prepared solution; meanwhile, the concentration does not need to be solved by manual conversion like a weighing method, and the concentration of the solution can be obtained again after evaporation or non-quantitative feeding.
Description
Technical Field
The invention relates to the field of water cups, in particular to a method for measuring the concentration of household self-made drinks.
Background
In daily life, people often drink sugar water, prepare normal saline or prepare saline with seawater concentration so as to make the sea fresh and spit sand.
In the prior art, sugar water and brine are usually blended by a weighing method, and actually, the amount of a solution in a common household is not large, on one hand, the weighing precision of the weighing method is required to be improved, the concentration of the prepared solution is not easy to be accurate, and on the other hand, if the precision of the weighing method is reduced by adding a solvent and a solute, the waste of water resources and the solute is easily caused.
In addition, the following problems are also present with the weighing method: 1) manually converting the solute volume to solve the concentration; 2) the solution concentration will not be available again due to evaporation or after a variable addition.
Disclosure of Invention
In view of some of the above-mentioned drawbacks of the prior art, the present invention provides a method for measuring the concentration of home-made beverage, which is to measure the refractive index of a solution and solve the concentration of the solution by the refractive index to obtain a more accurate solution concentration, so as to prepare a home-made beverage with a proper concentration.
To achieve the above object, in a preferred first embodiment, there is provided a home-made drink concentration measuring method including:
collecting an offset distance D of a first light ray emitted by a first light emitting module on a second light receiving module after being refracted by a solution to be detected in a first right-angle trapezoidal counter bore at the bottom of a concentration measuring instrument; the first right-angle trapezoidal counter bore is positioned at the bottom of the concentration measuring instrument, the first light emitting module is arranged in a first cavity part on one side of a first inclined plane of the first right-angle trapezoidal counter bore, and the second light receiving module is arranged in a second cavity part on one side of a second right-angle plane of the first right-angle trapezoidal counter bore;
according to the offset distance D, the first distance L and the first incident angle thetaiSolving the refractive index n of the solution to be detected; the refractive index n satisfies:
wherein, the first light ray emitted by the first light emitting module is parallel to the normal of the second right-angle surface, and the first incident angle thetaiIs the included angle between the first light emitted by the first light emitting module and the normal of the first inclined plane, thetaiNot equal to 0, wherein the first distance L is the distance from the intersection point of the first light ray and the first inclined plane to the second right-angle plane;
obtaining the concentration c of the solution to be detected according to the refractive index of the solution to be detected, the solute information of the solution to be detected and the solvent of the solution to be detected; the solute information includes a refractive index-concentration relationship curve that satisfies: c ═ α n2+ β n- γ, said α, said β, said γ being polynomial coefficients of the refractive index-concentration relationship curve.
In this technical scheme, through the position design of first light emitting module, second light receiving module, first inclined plane, second right angle face to try to get the refracting index, and further try to get solution concentration through the refracting index, so that the user can obtain comparatively accurate solution concentration, so that prepare the domestic self-made beverage of suitable concentration. The technical scheme avoids the precision requirement of solution proportioning by a weighing method and improves the concentration precision of the prepared solution; meanwhile, the concentration does not need to be solved by manual conversion like a weighing method, and the concentration of the solution can be obtained again after evaporation or non-quantitative feeding.
Through experiments on the relation between the concentration of the sucrose and the refractive index, the inventor finds that a single soluble substance which does not chemically react with water is mixed with water, and the refractive index is related to the proportion of the two, namely, the higher the solution mass ratio is, the higher the refractive index of the solution is, and the curve relation is met; in addition, the inventor also conducts experiments on the relation between the brine concentration and the refractive index, and the above rule is also met. Based on the above mechanism, in the present embodiment, the concentration of the solution can be known by measuring the concentration of the solution when the solute of the solution is known.
Optionally, the solute information includes a type of the solute;
optionally, the solute is sugar water; the concentration c of the sugar water meets the following conditions: c-12.276 n2+39.646n-31.04；
Optionally, the solute is saline; the concentration c of the solution to be detected meets the following requirements: c-31.77 n2+91.519 n-65.55.
In this example, the solute is a single edible product.
Optionally, the solute category is one of sucrose, salt, glucose and honey.
In a specific embodiment, the method further comprises:
when the first right-angle trapezoidal counter bore does not extend into the solution to be detected, collecting an intrinsic offset distance D of a first light ray emitted by a first light emitting module on a second light receiving module after passing through the first right-angle trapezoidal counter bore0；
According to the intrinsic offset distance D0Correcting the offset distance D acquired when the first right-angle trapezoidal counter bore extends into the solution to be detected; the offset distance D satisfies: d ═ Dreal-D0Said D isrealIs the actual measurement.
In the technical scheme, the intrinsic offset distance is solved, so that the influence of the refractive index of the material on the refraction of the light path is eliminated or reduced, and the measurement accuracy of the refractive index is improved.
In a specific embodiment, the method further comprises: solute information input by a user at an input device is collected.
In a specific embodiment, the method further comprises: and displaying the concentration information of the solution to be detected.
In a specific embodiment, the method further comprises:
and extracting at least one solute information stored in a storage module for selection by a user, wherein the solute information comprises a solute name and a multinomial coefficient of a refractive index-concentration relation curve corresponding to the solute name.
In the technical scheme, the refractive index-concentration relation curves of various solutes are preset, so that the selection is effectively provided for a user, and the system compatibility is improved.
Optionally, the second light receiving module is planar;
in a specific embodiment, the second light receiving module includes a photo-resistor array. In the technical scheme, the emergent position of the first light ray is measured through the photoresistor array.
In one embodiment, the first inclined surface is planar; the second right-angle surface is a plane. Through the planar design, the refractive index solving precision is improved, the equipment installation accuracy is reduced, and the assembly cost is reduced.
In a specific embodiment, a mounting part for mounting the concentration measuring instrument on the wall of a first container for carrying the solution to be measured extends outwards from the middle part or the upper part of the shell of the concentration measuring instrument; the mounting part is of an inverted L shape. Through setting up the mount portion, be convenient for fix the concentration measurement appearance on the container.
In one embodiment, the first inclined plane is made of a light-transmitting material, and the second right-angle plane is made of a light-transmitting material.
The invention has the beneficial effects that: according to the invention, the refractive index is obtained through the position design of the first light emitting module, the second light receiving module, the first inclined plane and the second right-angle plane, and the solution concentration is further obtained through the refractive index, so that a user can obtain more accurate solution concentration, and a household self-made drink with proper concentration can be prepared. The invention avoids the precision requirement of solution proportioning by a weighing method and improves the concentration precision of the prepared solution; meanwhile, the concentration does not need to be solved by manual conversion like a weighing method, and the concentration of the solution can be obtained again after evaporation or non-quantitative feeding.
Drawings
FIG. 1 is a schematic flow chart of a method for measuring the concentration of home-made drink according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a home-made beverage concentration measuring apparatus according to an embodiment of the present invention, in cooperation with a container;
FIG. 3 is a schematic diagram of a refracted light path of a first light ray in an embodiment of the invention;
FIG. 4 is a block diagram of a household home-made drink concentration measuring instrument according to an embodiment of the present invention;
FIG. 5 is a graph of sugar water concentration versus refractive index in accordance with one embodiment of the present invention;
FIG. 6 is a graph of saline concentration versus refractive index in accordance with one embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 6, in a first embodiment of the present invention, there is provided a home-made drink concentration measuring method including:
collecting an offset distance D of a first light ray emitted by a first light emitting module 104 on a second light receiving module 107 after being refracted by a solution to be detected in a first right-angle trapezoidal counter bore 101 at the bottom of a concentration measuring instrument; wherein the first right-angle trapezoid counter bore 101 is located at the bottom of the concentration measuring instrument, the first light emitting module 104 is arranged in the first cavity part 103 at the side of the first inclined plane 102 of the first right-angle trapezoid counter bore 101, and the second light receiving module 107 is arranged in the second cavity part 106 at the side of the second right-angle plane 105 of the first right-angle trapezoid counter bore 101;
according to the offset distance D, the first distance L and the first incident angle thetaiSolving the refractive index n of the solution to be detected; the refractive index n satisfies:
wherein, the first light ray emitted by the first light emitting module 104 is parallel to the normal of the second right-angle surface 105The first incident angle thetaiIs the angle between the first light emitted by the first light emitting module 104 and the normal of the first inclined plane 102, the θiNot equal to 0, wherein the first distance L is a distance from an intersection point of the first light ray and the first inclined plane 102 to the second right-angle plane 105;
obtaining the concentration c of the solution to be detected according to the refractive index of the solution to be detected, the solute information of the solution to be detected and the solvent of the solution to be detected; the solute information includes a refractive index-concentration relationship curve that satisfies: c ═ α n2+ β n- γ, said α, said β, said γ being polynomial coefficients of the refractive index-concentration relationship curve.
It is worth mentioning that, in the present embodiment, the concentration is a mass percentage concentration.
As shown in fig. 3, the geometrical relationship of the first ray refraction phenomenon indicates that:
θr＝θi-Δθ (1)
the triangle geometric relationship shows that:
from refractive index formula
And the formulas (1) to (2) can be known:
optionally, the solute is sugar water; the concentration c of the sugar water meets the following conditions: c-12.276 n2+39.646n-31.04。
The applicant obtained the data in table 1 by experiments on the ratio of sucrose to water.
TABLE 1 data of the relationship between the refractive index and concentration of sugar water at 18 deg.C
| Refractive index | 1.334 | 1.3477 | 1.3573 | 1.3691 | 1.3872 | 1.4025 | 1.4186 | 1.4407 |
| Concentration of | 0％ | 9.10％ | 16.70％ | 23.10％ | 33.30％ | 41.10％ | 50％ | 60％ |
Obtaining the concentration c of the sucrose syrup by curve fitting, wherein the concentration c meets the following requirements: c-12.276 n2+39.646n-31.04。
Optionally, the solute is saline; the concentration c of the solution to be detected meets the following requirements: c-31.77 n2+91.519 n-65.55.
The applicant obtained the data in table 2 by experiments on the salt to water ratio.
TABLE 2 Experimental data of saline refractive index and concentration relationship at 18 deg.C
| Refractive index | 1.334 | 1.3419 | 1.3479 | 1.3624 | 1.3701 | 1.3813 |
| Concentration of | 0％ | 5％ | 9.10％ | 16.70％ | 20％ | 25％ |
By curve fitting, the concentration c of the brine is obtained to satisfy: c-31.77 n2+91.519 n-65.55.
Optionally, the solute information includes a type of the solute;
in the practical scene application, a user needs to prepare saline water, the prepared saline water is input into the system, and after the user adds water and salt, the concentration measuring instrument detects the concentration of the prepared saline water and outputs the concentration in a display mode; according to the actually measured concentration of the brine, a user adds water or salt according to the requirement. Optionally, the salt comprises sea salt and iodized salt.
In another scene, a user needs to configure sugar water, the sugar water is input into the system and configured, and after the user adds water and adds sugar, the concentration measuring instrument detects the concentration of the configured sugar water and displays the concentration in real time; adding water and sugar according to the requirement. It is worth mentioning that the sugar itself also includes a plurality of kinds, which the system can refine, for example, glucose, sucrose, maltose, honey, etc.
In this example, the solute is a single edible product.
Optionally, the solute category is one of sucrose, salt, glucose and honey.
In a specific embodiment, the method further comprises:
when the first right-angle trapezoid counter bore 101 does not extend into the solution to be measured, the intrinsic offset distance D of the first light ray emitted by the first light emitting module 104 on the second light receiving module 107 after passing through the first right-angle trapezoid counter bore 101 is collected0；
According to the intrinsic offset distance D0Correcting the offset distance D acquired when the first right-angle trapezoidal counter bore 101 extends into the solution to be detected; the offset distance D satisfies: d ═ Dreal-D0Said D isrealIs the actual measurement.
In a specific embodiment, the method further comprises: solute information input by a user at an input device is collected.
In a specific embodiment, the method further comprises: and displaying the concentration information of the solution to be detected. Optionally, the concentration information is displayed through an LCD module or a nixie tube.
In a specific embodiment, the method further comprises:
and extracting at least one solute information stored in a storage module for selection by a user, wherein the solute information comprises a solute name and a multinomial coefficient of a refractive index-concentration relation curve corresponding to the solute name.
Optionally, the second light receiving module 107 is planar;
in the present embodiment, the second light receiving module 107 includes a photo-resistor array. Optionally, the position of the second light receiving module 107 receiving the light is obtained according to the array unit with the decreased resistance value of the photoresistor array.
In this embodiment, the first inclined surface 102 is a planar surface; the second right-angle surface 105 is planar.
In this embodiment, a mounting portion 108 for mounting the concentration measuring instrument on a wall of a first container 300 for holding the solution to be measured extends outward from a middle portion or an upper portion of a housing 100 of the concentration measuring instrument; the mounting portion 108 is of an inverted L-shape. By providing the mounting portion 108, the concentration measuring instrument can be easily fixed to the container.
In this embodiment, the first inclined surface 102 is made of a light-transmitting material, and the second right-angle surface 105 is made of a light-transmitting material.
In this embodiment, the solvent is water; optionally, the solute is salt; optionally, the solute is a sugar; it is worth mentioning that in this embodiment, it is not recommended to mix a plurality of substances, so that there are too many variations, i.e. there are many groups of solutions of refractive index and concentration, i.e. salt or sea salt is added to the mixed salt water, sucrose or glucose is added to the mixed sugar water, and honey is added to the mixed honey water.
Furthermore, it is worth mentioning that, alternatively, the method is executed in the form of software by a master controller 200, a first output of the master controller 200 being connected to the first optical transmit module 104; the second light receiving module 107 is connected with a second input end of the main controller 200; the input end of the display module 109 is connected with the third output end of the main controller 200, and the fourth input end of the main controller 200 is connected with the input module 110. The display module 109 is used for displaying concentration information, and the input module 110 is used for inputting solute categories.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A method for measuring the concentration of home-made drinks is characterized by comprising the following steps:
collecting an offset distance D of a first light ray emitted by a first light emitting module on a second light receiving module after being refracted by a solution to be detected in a first right-angle trapezoidal counter bore at the bottom of a concentration measuring instrument; the first right-angle trapezoidal counter bore is positioned at the bottom of the concentration measuring instrument, the first light emitting module is arranged in a first cavity part on one side of a first inclined plane of the first right-angle trapezoidal counter bore, and the second light receiving module is arranged in a second cavity part on one side of a second right-angle plane of the first right-angle trapezoidal counter bore;
according to the offset distance D, the first distance L and the first incident angle thetaiSolving the refractive index n of the solution to be detected; the refractive index n satisfies:
wherein, the first light ray emitted by the first light emitting module is parallel to the normal of the second right-angle surface, and the first incident angle thetaiIs the included angle between the first light emitted by the first light emitting module and the normal of the first inclined plane, thetaiNot equal to 0, wherein the first distance L is the distance from the intersection point of the first light ray and the first inclined plane to the second right-angle plane;
obtaining the concentration c of the solution to be detected according to the refractive index of the solution to be detected, the solute information of the solution to be detected and the solvent of the solution to be detected; the solute information includes a refractive index-concentration relationship curve that satisfies: c ═ α n2+ betan-gamma, said alpha, said beta, saidGamma is a polynomial coefficient of a refractive index-concentration relation curve.
2. The method of claim 1, wherein the method further comprises:
when the first right-angle trapezoidal counter bore does not extend into the solution to be detected, collecting an intrinsic offset distance D of a first light ray emitted by a first light emitting module on a second light receiving module after passing through the first right-angle trapezoidal counter bore0；
According to the intrinsic offset distance D0Correcting the offset distance D acquired when the first right-angle trapezoidal counter bore extends into the solution to be detected; the offset distance D satisfies: d ═ Dreal-D0Said D isrealIs the actual measurement.
3. The method of claim 1, wherein the method further comprises: solute information input by a user at an input device is collected.
4. The method of claim 1, wherein the method further comprises: and displaying the concentration information of the solution to be detected.
5. The method of claim 3, wherein the method further comprises:
and extracting at least one solute information stored in a storage module for selection by a user, wherein the solute information comprises a solute name and a multinomial coefficient of a refractive index-concentration relation curve corresponding to the solute name.
6. The method of claim 1, wherein the second light receiving module comprises a photo-resistor array.
7. The method of claim 1, wherein the first inclined surface is planar; the second right-angle surface is a plane.
8. The method for measuring the concentration of home-made drink according to claim 1, wherein a mounting portion for mounting the concentration measuring instrument on a wall of a first container for holding the solution to be measured is extended outward from a middle portion or an upper portion of a housing of the concentration measuring instrument; the mounting part is of an inverted L shape.
9. The method for measuring the concentration of home-made drink according to claim 1, wherein the first inclined plane is made of a light-transmitting material, and the second right-angle plane is made of a light-transmitting material.
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| EP1876438A1 (en) * | 2006-07-05 | 2008-01-09 | Dtu | Determining concentration of a substance in aqueous solution by selfreferenced reflection THz spectroscopy |
| CN101706425A (en) * | 2009-11-20 | 2010-05-12 | 南京邮电大学 | Liquid prism refractometer |
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Denomination of invention: A method for measuring the concentration of home-made drinking products Effective date of registration: 20211224 Granted publication date: 20201127 Pledgee: Keqiao Branch of Bank of China Ltd. Pledgor: Shaoxing dongque Textile Co.,Ltd. Registration number: Y2021330002627 |
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