CN109357723B - Method and device for measuring arm quality - Google Patents
Method and device for measuring arm quality Download PDFInfo
- Publication number
- CN109357723B CN109357723B CN201811539884.2A CN201811539884A CN109357723B CN 109357723 B CN109357723 B CN 109357723B CN 201811539884 A CN201811539884 A CN 201811539884A CN 109357723 B CN109357723 B CN 109357723B
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- China
- Prior art keywords
- water tank
- arm
- lower water
- water
- brine
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Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 146
- 239000011521 glass Substances 0.000 claims abstract description 20
- 210000001503 joint Anatomy 0.000 claims abstract description 15
- 239000012267 brine Substances 0.000 claims description 23
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 23
- 239000012153 distilled water Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 235000002639 sodium chloride Nutrition 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 210000000577 adipose tissue Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Measuring Cells (AREA)
Abstract
The invention relates to a measurement technology and aims to provide a method and a device for measuring arm quality. The device comprises a cylindrical upper water tank and a lower water tank, wherein the bottom of the upper water tank is provided with a water outlet, and the opening of the lower water tank is provided with a water valve; when the bottom of the upper water tank is in butt joint with the opening of the lower water tank, the water outlet can be in leak-free butt joint with the water valve; the side wall of the lower water tank is provided with a channel pipe used for extending into an arm, and a leakage-proof rubber pad is arranged in the channel pipe; a laser pen in the horizontal direction is respectively arranged on the upper side and the lower side of the channel pipe on the side wall of the lower water tank, and two white panels are arranged on the side wall of the lower water tank opposite to the laser pen; the device also comprises a vertical glass tube, and the bottom of the vertical glass tube is communicated with the bottom of the lower water tank. The invention has simple structure, convenient operation and small measurement error. The volume of the arm is measured by using a drainage method, and the average density of the arm is obtained by simple calculation, so that the mass of the arm is calculated, and the method is convenient, quick, safe and reliable.
Description
Technical Field
The invention relates to a measurement technology, in particular to a method and a device for measuring the quality of arms of a human body.
Background
In daily life, people pay more attention to their own physical conditions such as height, weight, body fat ratio, heart rate, etc. For certain reasons (e.g., fitness or fitness athletes are taking into account game performance), there is concern about the appearance of the arms, attention to the proportion of arm muscles and fat, and attention to annual changes in the arms. Or purely curiosity, one would want to measure the quality of his or her arms. The arm is an integral part of the human body and cannot be simply weighed by the body weight scale. The human body and its complexity, bones, fat, muscles, body fluids, etc. are not distributed uniformly in the human body, and if the average body density is simply calculated to be equal to the arm density, the error is large.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing a method and a device for measuring the quality of an arm.
In order to solve the technical problems, the invention adopts the following solutions:
the device for measuring the arm quality comprises a cylindrical upper water tank and a cylindrical lower water tank, wherein a water outlet is formed in the bottom of the upper water tank, and a water valve is arranged at the opening of the lower water tank; when the bottom of the upper water tank is in butt joint with the opening of the lower water tank, the water outlet can be in leak-free butt joint with the water valve;
a channel pipe used for extending into the arm is arranged on the side wall of the lower water tank, and a leakage-proof rubber pad is arranged in the channel pipe; a laser pen in the horizontal direction is respectively arranged on the upper side and the lower side of the channel pipe on the side wall of the lower water tank, and two white panels are arranged on the side wall of the lower water tank opposite to the laser pen;
the device also comprises a vertical glass tube, and the bottom of the vertical glass tube is communicated with the bottom of the lower water tank.
In the invention, a water outlet at the bottom of an upper water tank is provided with a rubber plug, and the upper part of the water valve is provided with a connecting pipe; when the bottom of the upper water tank is in butt joint with the opening of the lower water tank, the connecting pipe can be inserted into the rubber plug to realize the leak-free butt joint.
In the invention, the glass tube is provided with a scale or a staff gauge for measuring the water level.
In the invention, the outside of the laser pen is provided with a waterproof coating or wrapper.
In the invention, the upper water tank and the lower water tank have the same diameter.
The invention further provides a method for measuring arm quality by using the device, which comprises the following steps:
(1) Starting two laser pens to enable the emitted laser to keep horizontal and respectively irradiate on the two white panels;
(2) The arm is stretched into the empty water discharging groove from the channel pipe, the natural relaxation state is kept, and the leakage-proof rubber pad of the channel pipe is used for hooping the arm and realizing sealing;
(3) Distilled water is injected into the lower water tank, so that the arms are completely submerged; because the density of the arm is greater than that of the distilled water and is in a natural relaxation state, the arm can sink to the bottom of the water tank and shield the laser at the lower side; record the height of water level in the glass tube as h 1 And distilled water is added in a volume of V 1 The mass is M 1 The method comprises the steps of carrying out a first treatment on the surface of the Calculate the volume V of the arm A ：
In the method, in the process of the invention,the diameters of the water discharging groove and the glass tube are respectively;
(4) Filling high-concentration brine into the upper water tank, and recording that the mass of the upper water tank is m 1 ；
Placing the upper water tank at the opening of the lower water tank, so that the water outlet and the water valve realize leak-free butt joint; the water valve is opened to inject high-concentration brine into the lower water tank, so that distilled water in the lower water tank is changed into brine, the density of the brine in the lower water tank is gradually increased, when the density of the brine in the lower water tank is consistent with the average density of arms, the arms in a natural relaxed state can horizontally suspend in the lower water tank, at the moment, light spots of two laser pens can be simultaneously positioned on two white panels, and the water valve is closed; recording the mass of the water feeding groove at the moment as m 2 The height of the glass tube after the water level rises is h 2 ；
(5) Calculating the average density ρ of the arm according to A ：
(6) Based on the mass M A ＝ρ A ×V A Calculating the arm mass M A ：
In the invention, the high-concentration brine is strong brine prepared from salt, and the concentration of the high-concentration brine is not particularly required.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has simple structure, convenient operation and small measurement error.
2. The invention measures the volume of the arm by using the drainage method, and then obtains the average density of the arm by simple calculation, thereby calculating the mass of the arm, and the invention is convenient, quick, safe and reliable.
Drawings
FIG. 1 is a schematic diagram of the overall assembly of the device of the present invention;
fig. 2 is a schematic view of the device according to the present invention in use.
Reference numerals in the drawings: a water feeding tank 1; a water outlet 2; a water discharging groove 3; a glass tube 4; a water valve 5; a laser pen 6; a channel pipe 7; a white panel 8.
Detailed Description
The following describes the implementation of the present invention in detail with reference to the accompanying drawings:
fig. 1 is a schematic diagram of an assembly of an apparatus for measuring arm quality according to the present invention. The device comprises a cylindrical upper water tank 1 and a cylindrical lower water tank 3 with the same diameter, wherein the bottom of the upper water tank 1 is provided with a water outlet 2 with a rubber plug, and the opening of the lower water tank 3 is provided with a water valve 5; the upper part of the water valve 5 is provided with a connecting pipe; when the bottom of the upper water tank 1 is in butt joint with the opening of the lower water tank 3, the connecting pipe can be inserted into the rubber plug to realize leak-free butt joint. The device also comprises a vertical glass tube 4, wherein the glass tube 4 is provided with a scale or a staff gauge for measuring the water level, and the bottom of the glass tube is communicated with the bottom of the water discharging groove 3.
A channel pipe 7 for extending into an arm is arranged on the side wall of the lower water tank 3, and a leakage-proof rubber pad is arranged in the channel pipe 7; a laser pen 6 in a horizontal direction is respectively arranged on the upper side and the lower side of the channel pipe 7 on the side wall of the lower water tank 3, and two white panels 8 are arranged on the side wall of the lower water tank 3 opposite to the laser pen 6. The laser pen 6 is provided with a waterproof coating or wrapper on the outside.
A method for measuring arm quality using the device, comprising the steps of:
(1) Starting two laser pens 6 to enable the emitted laser to keep horizontal, and respectively irradiating the two white panels 8;
(2) The arm is stretched into the empty water discharging groove 3 from the channel pipe 7, the natural relaxation state is kept, and the leakage-proof rubber pad of the channel pipe 7 is used for hooping the arm and realizing sealing;
(3) Distilled water is injected into the lower water tank 3, so that the arms are all submerged; because the density of the arm is greater than that of the distilled water and is in a natural relaxation state, the arm can sink to the bottom of the water tank 3 and shield the laser at the lower side; the water level in the recording glass tube 4 is h 1 And distilled water is added in a volume of V 1 The mass is M 1 ；
Calculate the volume V of the arm A ：
In the method, in the process of the invention,the diameters of the water discharging groove 3 and the glass tube 4 are respectively; pi is the circumference ratio;
(4) Loading high-concentration brine into the water feeding tank 3, and recording that the mass of the water feeding tank 3 is m 1 The method comprises the steps of carrying out a first treatment on the surface of the The high-concentration brine can be strong brine prepared from common salt, and the concentration of the strong brine is not particularly required.
The upper water tank 3 is arranged at the opening of the lower water tank, so that the water outlet 2 and the water valve 5 realize leak-free butt joint; the water valve 5 is opened to inject high-concentration brine into the lower water tank 3, so that distilled water in the lower water tank 3 is changed into brine, the density of the brine in the lower water tank 3 is gradually increased, when the density of the brine in the lower water tank 3 is consistent with the average density of arms, the arms in a natural relaxed state can horizontally suspend in the lower water tank 3, at the moment, light spots of the two laser pens 6 can be simultaneously positioned on the two white panels 8, and the water valve 5 is closed; record the mass of the water feeding tank 3 at this time as m 2 The height of the glass tube 4 after the water level rises is h 2 ；
(5) Calculating the average density ρ of the arm according to A ：
(6) Based on the mass M A ＝ρ A ×V A Calculating the arm mass M A ：
Claims (6)
1. A method for measuring arm quality, the method being based on the following means:
the device comprises a cylindrical upper water tank and a lower water tank, wherein the bottom of the upper water tank is provided with a water outlet, and the opening of the lower water tank is provided with a water valve; when the bottom of the upper water tank is in butt joint with the opening of the lower water tank, the water outlet can be in leak-free butt joint with the water valve; the side wall of the lower water tank is provided with a channel pipe used for extending into an arm, and a leakage-proof rubber pad is arranged in the channel pipe; a laser pen in the horizontal direction is respectively arranged on the upper side and the lower side of the channel pipe on the side wall of the lower water tank, and two white panels are arranged on the side wall of the lower water tank opposite to the laser pen; the device also comprises a vertical glass tube, the bottom of which is communicated with the bottom of the lower water tank;
the method for measuring the arm quality specifically comprises the following steps:
(1) Starting two laser pens to enable the emitted laser to keep horizontal and respectively irradiate on the two white panels;
(2) The arm is stretched into the empty water discharging groove from the channel pipe, the natural relaxation state is kept, and the leakage-proof rubber pad of the channel pipe is used for hooping the arm and realizing sealing;
(3) Distilled water is injected into the lower water tank, so that the arms are completely submerged; because the density of the arm is greater than that of the distilled water and is in a natural relaxation state, the arm can sink to the bottom of the water tank and shield the laser at the lower side; record the height of water level in the glass tube as h 1 And distilled water is added in a volume of V 1 The mass is M 1 The method comprises the steps of carrying out a first treatment on the surface of the Calculate the volume V of the arm A ：
In the method, in the process of the invention,the diameters of the water discharging groove and the glass tube are respectively;
(4) Filling high-concentration brine into the upper water tank, and recording that the mass of the upper water tank is m 1 ；
Placing the upper water tank at the opening of the lower water tank, so that the water outlet and the water valve realize leak-free butt joint; the water valve is opened to inject high-concentration brine into the lower water tank, so that distilled water in the lower water tank is changed into brine, the density of the brine in the lower water tank is gradually increased, when the density of the brine in the lower water tank is consistent with the average density of arms, the arms in a natural relaxed state can horizontally suspend in the lower water tank, at the moment, light spots of two laser pens can be simultaneously positioned on two white panels, and the water valve is closed; recording the mass of the water feeding groove at the moment as m 2 The height of the glass tube after the water level rises is h 2 ；
(5) Calculating the average density ρ of the arm according to A ：
(6) Based on the mass M A ＝ρ A ×V A Calculating the arm mass M A ：
2. The method of claim 1, wherein a rubber plug is arranged at the water outlet at the bottom of the upper water tank, and a connecting pipe is arranged at the upper part of the water valve; when the bottom of the upper water tank is in butt joint with the opening of the lower water tank, the connecting pipe can be inserted into the rubber plug to realize the leak-free butt joint.
3. The method according to claim 1, wherein the glass tube is provided with a scale or a ruler for measuring the water level.
4. The method of claim 1, wherein the laser pen is externally provided with a waterproof cladding coating or wrap.
5. The method of claim 1, wherein the upper and lower tanks have the same diameter.
6. The method of claim 1, wherein the high strength brine is a strong brine formulated with common salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811539884.2A CN109357723B (en) | 2018-12-17 | 2018-12-17 | Method and device for measuring arm quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811539884.2A CN109357723B (en) | 2018-12-17 | 2018-12-17 | Method and device for measuring arm quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109357723A CN109357723A (en) | 2019-02-19 |
| CN109357723B true CN109357723B (en) | 2023-12-08 |
Family
ID=65329871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811539884.2A Active CN109357723B (en) | 2018-12-17 | 2018-12-17 | Method and device for measuring arm quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109357723B (en) |
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| CN109357723A (en) | 2019-02-19 |
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