KR200460604Y1 - Educational volume meter - Google Patents

Educational volume meter Download PDF

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Publication number
KR200460604Y1
KR200460604Y1 KR20120002390U KR20120002390U KR200460604Y1 KR 200460604 Y1 KR200460604 Y1 KR 200460604Y1 KR 20120002390 U KR20120002390 U KR 20120002390U KR 20120002390 U KR20120002390 U KR 20120002390U KR 200460604 Y1 KR200460604 Y1 KR 200460604Y1
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KR
South Korea
Prior art keywords
load cell
beaker
weight
information
overflow
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Application number
KR20120002390U
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Korean (ko)
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이금지
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이금지
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/02—Compensating or correcting for variations in pressure, density or temperature
    • G01F15/022—Compensating or correcting for variations in pressure, density or temperature using electrical means
    • G01F15/024—Compensating or correcting for variations in pressure, density or temperature using electrical means involving digital counting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
    • G01N9/04—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of fluids
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
    • G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases

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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Educational Administration (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Computational Mathematics (AREA)
  • Algebra (AREA)
  • Educational Technology (AREA)
  • Mathematical Analysis (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electrically Operated Instructional Devices (AREA)

Abstract

'Educational volume measuring device' according to the present invention is made of a transparent glass material, the upper portion of the open cup shape, the overflow side outlet 105 so that the overflowed liquid flows over a certain level on one side of the upper portion A volumetric beaker 101 formed; An overflow beaker 129 having a cup shape having an open top to contain a liquid overflowing from the volume measuring beaker 101; A first load cell (131) positioned below the volumetric beaker (101) for sensing the weight of the volumetric beaker (101); A first load cell adapter (133) for transmitting the weight of the volume measuring beaker (101) to the first load cell (131); A second load cell 125 for sensing the weight of the overflow beaker 129; A second load cell adapter 127 for transmitting the weight of the overflow beaker 129 to the first load cell 131; Compensating for the height difference between the height of the volume measuring beaker 101 and the overflow beaker 129, the second load cell 125 is mounted so that the second load cell adapter 127 and the second load cell 125 A second load cell support 123 for keeping the horizontal; A timer 203 which provides time information so that the weight measured by the second load cell 125 can be compared with the weight measured before a predetermined time; A control unit for calculating the volume of the object put into the volume measuring beaker 101 by using the weight information measured in the first load cell 131 and the second load cell 125 and the density information stored in the memory 205 ( 201); A memory 205 for temporarily storing the measured data and storing density information on a temperature and a control program of the controller 201; An input unit 115 receiving input information from a user and transferring the input information to the control unit 201; A display unit 113 displaying output information of the control unit 201; While accommodating the control unit 201, the first load cell 131, and the second load cell support 123, the controller 201 provides the input unit 115 receiving the input information from the user and the calculated output information to the user. And a main body 111 provided with the display portion 113.

Description

An Educational Instrument for Volume Measurement

The present invention relates to an educational volume meter, and more particularly, to an educational volume meter for measuring the volume of an object whose shape is not constant.

In general, when the shape of an object is geometrically shaped, there is a method of calculating the volume by measuring the width, length, height, and the like, or measuring the weight of the object and dividing it by specific gravity. However, when the shape is irregular or the specific gravity is unknown, the volume of the object may be measured by submerging the object in the liquid and changing the volume of the liquid. In the registered Utility Model Publication No. 20-0431982, a volume measuring device composed of a transparent cylinder, a scale plate, and a piston is presented. Since the density and volume of the liquid change with temperature, accurate measurement of the volume can only be made when the temperature of the liquid is measured together. Therefore, there is a need for an educational volume measuring device equipped with a temperature measuring means to effectively measure the temperature of the liquid without affecting the volume measurement of the object, and a beaker protection means so as not to break the beaker when the object is added. It is becoming.

Educational volume measuring device according to the present invention for solving the above problems is a built-in wireless temperature sensor to detect the temperature of the liquid inside the transparent beaker, for protecting the beaker at the bottom of the beaker to prevent damage to the beaker when the object is inserted A volumetric beaker with a pad, a volumetric beaker weighing unit for measuring the temperature of the liquid in the volumetric beaker and the weight of the beaker, and an overflow beaker for measuring the weight of the overflowed water from the beaker It is an object of the present invention to provide an educational volume measuring device provided with a weighing unit.

Educational volume measuring device according to the present invention for achieving the above object is made of a transparent glass material, the upper portion of the open cup form, on one side of the upper overflow overflow so that the liquid flows out when a certain level is exceeded A volumetric beaker 101 in which 105 is formed; An overflow beaker 129 having a cup shape having an open top to contain a liquid overflowing from the volume measuring beaker 101; A first load cell (131) positioned below the volumetric beaker (101) for sensing the weight of the volumetric beaker (101); A first load cell adapter (133) for transmitting the weight of the volume measuring beaker (101) to the first load cell (131); A second load cell 125 for sensing the weight of the overflow beaker 129; A second load cell adapter 127 for transmitting the weight of the overflow beaker 129 to the first load cell 131; Compensating for the height difference between the height of the volume measuring beaker 101 and the overflow beaker 129, the second load cell 125 is mounted so that the second load cell adapter 127 and the second load cell 125 A second load cell support 123 for keeping the horizontal; A timer 203 which provides time information so that the weight measured by the second load cell 125 can be compared with the weight measured before a predetermined time; A control unit for calculating the volume of the object put into the volume measuring beaker 101 by using the weight information measured in the first load cell 131 and the second load cell 125 and the density information stored in the memory 205 ( 201); A memory 205 for temporarily storing the measured data and storing density information on a temperature and a control program of the controller 201; An input unit 115 receiving input information from a user and transferring the input information to the control unit 201; A display unit 113 displaying output information of the control unit 201; While accommodating the control unit 201, the first load cell 131, and the second load cell support 123, the controller 201 provides the input unit 115 receiving the input information from the user and the calculated output information to the user. And a main body 111 provided with the display portion 113.

Educational volume measuring device according to the present invention is able to measure the volume and density of the object at the same time is excellent education effect for the volume measurement of students, and by measuring the temperature of the liquid to compensate for temperature, precise volume measurement The temperature sensor located at the bottom of the beaker communicates with the main body wirelessly, so it is easy to attach and detach the beaker, and the bottom of the beaker is equipped with a beaker protection pad to prevent damage to the beaker when the object under measurement is inserted. There is.

1 is a front view of a volume measuring device according to the present invention,
2 is a block circuit diagram,
3 is a conceptual diagram of wireless communication between a body and a temperature sensor attached to a volumetric beaker,
4 is a side view of an overflow outlet formed on the side of the volumetric beaker,
5 is a volumetric flow chart.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the 'education volume measuring device' according to the present invention. The following examples are merely illustrated to illustrate the present invention, and are not intended to limit the scope of the present invention.

'Educational volume measuring device' according to the present invention is made of a transparent glass material, the upper portion of the open cup shape, the overflow side outlet 105 so that the overflowed liquid flows over a certain level on one side of the upper portion A volumetric beaker 101 formed; An overflow beaker 129 having a cup shape having an open top to contain a liquid overflowing from the volume measuring beaker 101; A first load cell (131) positioned below the volumetric beaker (101) for sensing the weight of the volumetric beaker (101); A first load cell adapter (133) for transmitting the weight of the volume measuring beaker (101) to the first load cell (131); A second load cell 125 for sensing the weight of the overflow beaker 129; A second load cell adapter 127 for transmitting the weight of the overflow beaker 129 to the first load cell 131; Compensating for the height difference between the height of the volume measuring beaker 101 and the overflow beaker 129, the second load cell 125 is mounted so that the second load cell adapter 127 and the second load cell 125 A second load cell support 123 for keeping the horizontal; A timer 203 which provides time information so that the weight measured by the second load cell 125 can be compared with the weight measured before a predetermined time; A control unit for calculating the volume of the object put into the volume measuring beaker 101 by using the weight information measured in the first load cell 131 and the second load cell 125 and the density information stored in the memory 205 ( 201); A memory 205 for temporarily storing the measured data and storing density information on a temperature and a control program of the controller 201; An input unit 115 receiving input information from a user and transferring the input information to the control unit 201; A display unit 113 displaying output information of the control unit 201; While accommodating the control unit 201, the first load cell 131, and the second load cell support 123, the controller 201 provides the input unit 115 receiving the input information from the user and the calculated output information to the user. And a main body 111 provided with the display portion 113.

In addition, the 'education volume measuring device' according to the present invention is located on the bottom of the volume measuring beaker 101, the temperature sensor module for detecting the temperature of the liquid and transmitting the temperature information by infrared communication or RF wireless communication through the transparent glass ( 109);

And a temperature sensor receiver 207 which receives temperature information from the temperature sensor module 109 and transmits the temperature information to the controller 201. The controller 201 stores the weight of the measured liquid in the memory ( The volume information is calculated by correcting the density information previously stored in step 205 with the measured temperature information.

In addition, the volume measuring beaker 101 of the 'educational volume measuring device' according to the present invention is provided with an impact prevention pad 107 at the bottom of the volume measuring beaker 101 so as to mitigate the impact when the object to be measured. It features.

Educational volume meter according to the present invention is a volumetric beaker that is filled with a volume measuring beaker 101 in the volume measuring beaker 101 without the measurement object is immersed in the measuring auxiliary liquid in order to measure the volume of the measuring object Fill the measurement auxiliary liquid through the overflow outlet 105 of 101 until it overflows. Then, the weight of the volume measuring beaker 101 and the weight of the overflow beaker 129 are measured. Next, after immersing the object to be measured in the volumetric beaker 101, when the flow of the measurement auxiliary liquid stops flowing, the weight of the volumetric beaker 101 and the weight of the overflow beaker 129 are again measured. When the weight of the overflowing measuring auxiliary liquid is measured and divided by the density data of the corresponding temperature stored in the memory 205, the volume of the overflowing measuring auxiliary liquid can be obtained, and the volume of the overflowing measuring auxiliary liquid is Coincides with the volume of the object to be measured 103.

In addition, dividing the difference in weight before and after dipping the object to be measured in the volume measuring beaker 101 by the volume of the measurement auxiliary liquid discharged to the overflow beaker 129 through the overflow outlet 105, which is the object to be measured. And the density difference between the auxiliary liquid for measurement. Therefore, the density of the object to be measured can be obtained by adding the calculated density difference to the density of the measurement auxiliary liquid.

Referring to Figure 1, the volumetric beaker 101 is made of a transparent glass material, while the upper portion is formed in the form of an open cup, on one side of the upper overflow overflow outlet so that the liquid flows out when a certain level is exceeded ( 105 is formed. The overflow beaker 129 has a cup shape in which an upper portion of the overflow beaker 129 is opened so as to contain the liquid overflowed from the volumetric beaker 101. The first load cell 131 is located under the volumetric beaker 101 to sense the weight of the volumetric beaker 101. The first load cell adapter 133 may include a first load cell 131; The weight of the volumetric beaker 101 is transmitted to the first load cell 131. The second load cell 125 senses the weight of the overflow beaker 129, and the second load cell adapter 127 transmits the weight of the overflow beaker 129 to the first load cell 131. The second load cell support 123 compensates for the difference between the height of the volumetric beaker 101 and the height of the overflow beaker 129, and the second load cell 125 is mounted on the second load cell adapter 127 and the first. 2 Load cell 125 to be level.

The main body 111 accommodates the control unit (refer to FIG. 2, 201), the first load cell 131, and the second load cell support 123, and receives an input unit 115 that receives input information from the user and calculated by the user. A display unit 113 for providing output information is provided. The temperature sensor module 109 is located at the bottom of the volumetric beaker 101 and senses the temperature of the liquid to the temperature sensor receiver 207 provided in the main body 111 by infrared communication or RF wireless communication through the transparent glass. Send temperature information.

In addition, the bottom of the volume measuring beaker 101 is provided with an impact prevention pad 107 so as to mitigate the impact when the object to be measured is added to prevent the volume measuring beaker 101 from being damaged by the impact during the input. The menu button 117 allows the user to select a menu and the start button 121 allows to start the measurement.

Referring to FIG. 2, the timer 203 provides time information so that the weight measured in the second load cell 125 can be compared with a weight measured before a predetermined time, and measured before the current measured weight and a predetermined time. If the weight is the same, it is determined that the operation of overflowing the measurement auxiliary liquid to the overflow beaker 129 is stopped. The control unit 210 uses the weight information measured by the first load cell 131 and the second load cell 125 and the density information of the measurement auxiliary liquid stored in the memory 205 to determine the volume of the object introduced into the volume measuring beaker 101. Calculate the volume. The memory 205 stores a control program of the control unit 201, temporarily stores the measured data measured for calculation, and stores density information on the temperature of the measurement auxiliary liquid. The input unit 115 receives input information from the user and transfers the input information to the control unit 201, and the display unit 113 displays output information of the control unit 201.

Referring to FIG. 3, the control unit 201 may be configured to determine the amount of the measurement auxiliary liquid that has overflowed the density information of the measurement auxiliary liquid previously stored in the memory 205 according to the temperature information received through the temperature sensor receiver 207. Calculate the volume.

Referring to FIG. 4, the overflow discharge port 105 protruding through the volume measuring beaker 101 is formed to allow the measurement auxiliary liquid to overflow.

Referring to Figure 5, in order to measure the volume of the object to be measured using the 'educational volume meter' according to the present invention, the auxiliary liquid for measurement is measured in a volume measuring beaker without first immersing the object to be measured in the auxiliary liquid for measurement. Filled with (101) is filled through the overflow outlet 105 of the volumetric beaker 101 until a few drops of the measurement auxiliary liquid flows out. Then, after pressing the start button 121, after performing the initialization (S101), by measuring the weight of the volume measuring beaker 101 and the weight of the overflow beaker 129 to measure the initial zero point (S103). Then, after the object to be measured is immersed in the volume measuring beaker 101, it is measured at regular intervals using the internal timer 203 (S105) to observe whether the flow of the measurement auxiliary liquid stops flowing (S107, S109). . If there is no flow of the auxiliary liquid for measurement for a predetermined time set by the timer 203, the measured weight of the volumetric beaker 101 and the weight of the overflow beaker 129 are again measured, and the overflow beaker 129 By subtracting the initial weight of the overflow beaker 129 temporarily stored in the memory 205 from the current weight, the weight of the overflowing measuring auxiliary liquid can be obtained, and the weight of the overflowing measuring auxiliary liquid is temperature-compensated density. By dividing the data (S111), the volume of the overflowing measuring auxiliary liquid can be obtained (S113), and the volume of the measuring auxiliary liquid thus obtained coincides with the volume of the measurement object 103. In this case, since the density of the auxiliary liquid for measurement varies with temperature, after correcting the density of the auxiliary liquid for measurement with the measured temperature, the volume of the object to be measured is calculated and displayed on the display unit 113 (S115).

101: volumetric beaker 103: measured object
105: overflow outlet 107: impact protection pad
109: temperature sensor module 111: main body
113: display unit 115: input unit
117: Menu button 121: Start button
123: second load cell support 125: second load cell
127: second load cell adapter 129: overflow beaker
131: first load cell 133: first load cell adapter
201: control unit 203: timer
205: memory 207: temperature sensor receiver

Claims (3)

In the educational volume measuring device, a volume measuring beaker made of a transparent glass material and having an open cup shape and an overflow outlet 105 formed on one side of the upper part to overflow the liquid when the liquid level exceeds a certain level. 101;
An overflow beaker 129 having a cup shape having an open top to contain a liquid overflowing from the volume measuring beaker 101;
A first load cell (131) positioned below the volumetric beaker (101) for sensing the weight of the volumetric beaker (101);
A first load cell adapter (133) for transmitting the weight of the volume measuring beaker (101) to the first load cell (131);
A second load cell 125 for sensing the weight of the overflow beaker 129;
A second load cell adapter 127 for transmitting the weight of the overflow beaker 129 to the first load cell 131;
Compensating for the height difference between the height of the volume measuring beaker 101 and the overflow beaker 129, the second load cell 125 is mounted so that the second load cell adapter 127 and the second load cell 125 A second load cell support 123 for keeping the horizontal;
A timer 203 which provides time information so that the weight measured by the second load cell 125 can be compared with the weight measured before a predetermined time;
A control unit for calculating the volume of the object put into the volume measuring beaker 101 by using the weight information measured in the first load cell 131 and the second load cell 125 and the density information stored in the memory 205 ( 201);
A memory 205 for temporarily storing the measured data and storing density information on a temperature and a control program of the controller 201;
An input unit 115 receiving input information from a user and transferring the input information to the control unit 201;
A display unit 113 displaying output information of the control unit 201;
While accommodating the control unit 201, the first load cell 131, and the second load cell support 123, the controller 201 receives the input information from the user and provides the calculated output information to the user. Educational volume meter comprising a; main body 111 is provided with the display unit 113.
The temperature sensor module (109) of claim 1, further comprising: a temperature sensor module (109) positioned at the bottom of the volumetric beaker (101) for sensing the temperature of the liquid and transmitting temperature information through infrared or RF wireless communication through the transparent glass;
And a temperature sensor receiver 207 which receives temperature information from the temperature sensor module 109 and transmits the temperature information to the controller 201.
The control unit 201 is a volumetric education, characterized in that for calculating the volume by correcting the density information previously stored in the memory 205 with the measured temperature information the weight of the measured liquid.
The volume measuring beaker of claim 1, wherein the volume measuring beaker 101 is provided with an anti-shock pad 107 at the bottom of the volume measuring beaker 101 so as to mitigate an impact when the object is measured. .
KR20120002390U 2012-03-26 2012-03-26 Educational volume meter KR200460604Y1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102798580A (en) * 2012-08-13 2012-11-28 北京理工大学 On-line rapid detection system for density of emulsion explosive semi-finished product
KR200467999Y1 (en) 2013-03-28 2013-07-19 김가연 The liquid's volume testing equipment by temperature
KR101478956B1 (en) 2014-09-23 2015-01-05 김종만 Method for Measuring Weight of the Scale by Unloading and Management System of Dividing Weight

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008292463A (en) 2007-03-30 2008-12-04 F Hoffmann La Roche Ag Device and method for volume measurement by liquid weight measurement and analyzing apparatus containing the device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008292463A (en) 2007-03-30 2008-12-04 F Hoffmann La Roche Ag Device and method for volume measurement by liquid weight measurement and analyzing apparatus containing the device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102798580A (en) * 2012-08-13 2012-11-28 北京理工大学 On-line rapid detection system for density of emulsion explosive semi-finished product
KR200467999Y1 (en) 2013-03-28 2013-07-19 김가연 The liquid's volume testing equipment by temperature
KR101478956B1 (en) 2014-09-23 2015-01-05 김종만 Method for Measuring Weight of the Scale by Unloading and Management System of Dividing Weight
WO2016047903A1 (en) * 2014-09-23 2016-03-31 주식회사 이노체카 Method for scale measuring weight using unloading method and weight division management system

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