KR20170101372A - Actuator and indicator including the same - Google Patents

Actuator and indicator including the same Download PDF

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Publication number
KR20170101372A
KR20170101372A KR1020160023692A KR20160023692A KR20170101372A KR 20170101372 A KR20170101372 A KR 20170101372A KR 1020160023692 A KR1020160023692 A KR 1020160023692A KR 20160023692 A KR20160023692 A KR 20160023692A KR 20170101372 A KR20170101372 A KR 20170101372A
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South Korea
Prior art keywords
actuator
measurement target
measured
time information
target substance
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KR1020160023692A
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Korean (ko)
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KR101816634B1 (en
Inventor
이민희
김호영
신범준
하종현
최성목
Original Assignee
서울대학교산학협력단
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Priority to KR1020160023692A priority Critical patent/KR101816634B1/en
Publication of KR20170101372A publication Critical patent/KR20170101372A/en
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Publication of KR101816634B1 publication Critical patent/KR101816634B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath
    • G01N33/4972—Determining alcohol content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/38—Radiation pyrometry, e.g. infrared or optical thermometry using extension or expansion of solids or fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/414—Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
    • G01N27/4146—Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS involving nanosized elements, e.g. nanotubes, nanowires
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1806—Water biological or chemical oxygen demand (BOD or COD)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials
    • G01N33/246—Earth materials for water content
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
    • G01N2021/8893—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques providing a video image and a processed signal for helping visual decision

Abstract

The present invention relates to an actuator and an indicator including the same. The indicator comprises: an actuator in which a first member having motility by being reacted by an object to be measured and a second member having nonreactivity with respect to motility different from the mobility of the first member or the object to be measured are coupled to each other; and a body including a fixing unit fixing an end of one side of the actuator and a time information unit formed in at least a portion of a section where the other end of the actuator can be transferred by mobility and visually indicating a degree of a transfer. The actuator responding to the object to be measured comprises: the first member including a plurality of nanofibers which can be extensible and contractible by detection of the object to be measured; and the second member having the nonreactivity with respect to the object to be measured. The indicator can visually indicate a content of the object to be measured in a fluid through the degree of reactivity of the actuator reacted by the object to be measured, and the nanofibers included in the first member are arranged in one direction.

Description

Technical Field [0001] The present invention relates to an actuator including an actuator and an actuator,

The present invention relates to an indicator comprising an actuator and an actuator.

2. Description of the Related Art In general, an actuator is an apparatus for performing mechanical work using energy. Recently, a shape memory alloy actuator, a piezoelectric actuator, or the like is used as an actuator used in a small-sized machine. In the case of a shape memory alloy actuator, when a current flows through the shape memory alloy, the shape of the shape of the shape of the shape memory alloy is changed to the direction of the resistance heat And the shape of the shape memory alloy is deformed in accordance with the change of the temperature.

In this way, energy such as heat or electricity is required to drive the actuator. Therefore, in the design of the actuator, the supply method from the supply source for supplying energy serves as an important variable.

On the other hand, some plants in nature are moved or transformed by various stimuli, for example, light, heat, gravity, humidity, and the like. There are some slow movements such as growing tendons and flowers, but there are also fast enough movements to recognize the mistletoe's dispersal of seeds, mimosa leaf folding, venus paradox movements. This movement is accomplished by supply and deprivation of moisture.

Korean Patent Publication No. 2015-0141309 (Dec. 18, 2015)

An embodiment of the present invention can provide an actuator having mobility in response to a substance to be measured.

In addition, an embodiment of the present invention can provide an indicator to which an actuator responsive to a measurement target substance is applied.

In addition, an embodiment of the present invention can provide an indicator capable of measuring the relative humidity in the air when the moisture is the measurement target substance.

In addition, an embodiment of the present invention can provide an indicator capable of measuring the blood alcohol concentration when the alcohol is a substance to be measured.

In addition, an embodiment of the present invention can provide an indicator capable of measuring dissolved oxygen when the dissolved oxygen is a substance to be measured.

In addition, an embodiment of the present invention can adjust the state of the flow of the measurement target material in the fluid to provide a measurement result with higher reliability.

According to an embodiment of the present invention, there is provided an apparatus for measuring an object to be measured, the apparatus comprising: an actuator coupled to a first member having mobility in response to a measurement target material and a second member having mobility different from the motility or non- And a body including a fixed portion for fixing one end portion of the actuator and a time information portion provided on at least a part of the section in which the other end portion of the actuator can move due to the mobility and visually indicating the degree of movement .

And, the first member may have mobility that expands by reacting with the solvent.

Further, the time information unit may be an electronic device that senses the position of the other end of the actuator and displays the degree of motility in numerical form.

A metal thin film or fluorescent material may be positioned at the other end of the actuator so that the position of the other end of the actuator is sensed by the sensor.

In addition, the time information part may be formed in a different color depending on the position of the other end of the actuator, so that the visual information part can transmit the degree of inclusion in the fluid (body) in contact with the first member as time information.

Also, the measurement target substance is water, and the relative humidity gauge can be displayed in the time information section.

Further, the substance to be measured is alcohol, and a blood alcohol concentration gauge may be displayed on the visual information part.

Further, the measurement target substance is dissolved oxygen, and a gauge of ppm or mg / L may be displayed in the time information section.

Further, the actuator may be located in a space exposed to the outside or communicated with the outside.

An actuator responsive to a measurement target substance, comprising: a first member including a plurality of nanofibers capable of elongating and contracting by sensing a measurement target substance; And a second member which is non-reactive with respect to the substance to be measured, the actuator being capable of visually displaying the content of the fluid of the substance to be measured through the degree of reactivity with the substance to be measured, The contained plurality of nanofibers are provided with an actuator aligned in one direction.

An embodiment of the present invention provides an actuator having mobility in response to a substance to be measured.

In addition, an embodiment of the present invention can provide an indicator to which an actuator responsive to a measurement target substance is applied.

In addition, an embodiment of the present invention can measure the relative humidity in the air when the moisture is the substance to be measured.

In addition, an embodiment of the present invention can measure the blood alcohol concentration when the alcohol is a substance to be measured.

In addition, an embodiment of the present invention can measure dissolved oxygen when dissolved oxygen is a substance to be measured.

In addition, an embodiment of the present invention can adjust the state of the flow of the measurement target material in the fluid to provide a measurement result with higher reliability.

FIG. 1 (a) is a view showing an actuator in a dry state according to an embodiment of the present invention, FIG. 1 (b) is a view showing an actuator expanded by sensing a substance to be measured
FIG. 2 (a) is a view showing an indicator including an actuator according to an embodiment of the present invention, and FIG. 2 (b) is a view showing an indicator provided inside a case
FIG. 3 (a) is a view showing one side of an indicator according to another embodiment of the present invention, FIG. 3 (b) is a view showing the other side of the indicator, and FIG. FIG.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is merely an example and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for effectively explaining the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

In the actuator having mobility in response to the measurement target material to illustrate the embodiments of the present invention, the measurement target material includes various solvents, steam, and gas. However, in order to explain the embodiments, Is explained as an example.

Furthermore, the first member and the second member included in the actuator may have different reactivity, respectively. For example, when the first member and the second member each have an expansion reaction and a shrinkage reaction with respect to the substance to be measured, the mobility of the actuator can be further increased and the degree of expansion when the two members exhibit the expansion reaction The mobility can be relatively reduced compared to when each member has an expansion and contraction reaction.

As described above, the mobility can be determined as various results depending on the reaction direction and the degree of the two members, but in the following description, the first member expands when it is sensed, and the second member expands, As shown in FIG.

FIG. 1 (a) is a view showing an actuator 100 in a dry state according to an embodiment of the present invention. FIG. 1 (b) Fig.

Referring to FIG. 1, the actuator 100 may include a first member 110 and a second member 120. The first member 110 may be a substance to be measured 1, that is, a member that reacts to moisture, and the second member 120 may be a non-reactive layer that does not react with the substance to be measured 1.

(A) is an actuator 100 in a state in which the actuator is not exposed to the measurement target substance 1, that is, in a state in which it is not exposed to moisture, and FIG. Here, the state of not being exposed to moisture means a state in which the predetermined humidity is not exposed to the environment in which the predetermined humidity is formed, and the predetermined humidity can be determined according to the reactivity of the first member 110.

The first member 110 can be maintained in a state in which the first member 110 is not exposed to the measurement target substance 1. When the first member 110 is exposed to the measurement target substance 1 and senses moisture, The degree of bending of the actuator 100 can be relaxed.

The actuator 100 exhibiting such a reaction according to the dry / humid environment can be applied to an indicator for measuring the measurement target material 1, and embodiments applied to the indicator will be described later with reference to FIG.

First, the actuator 100 may be formed by a method of fixing the first member 110, which is a reactive layer, on the second member 120, which is a non-reactive layer, to describe the actuator 100 more specifically.

For example, the first member 110 and the second member 120 can be fixed in the following manner. The polymer solution to be the first member 110 to be the reaction layer is placed on the second member 120 that is the non-reactive layer and the reaction layer member 110 is rotated by the inertia to rotate the non- And may be a method of spin coating that allows it to be fixed thinly and wide on the member 120.

The reaction layer member 110 is formed of a nanofiber by electrospinning (ES) process and is randomly arranged on the non-reactive layer member 120 to be laminated to each other by a non-directional laminate (Random ES) Can be fixed. Further, they can be aligned and stacked in one direction on the non-reactive layer member 120 by a directional E-S method.

Specifically, in the case of the non-directional laminate (Random E-S) and the directional laminate (Directional E-S), the actuator 100 can be arranged on the second member 120 by discharging the polymer material through the electrospinning by the injection pump. In the electrospinning process, an electric repulsive force is generated inside the polymer material and can be formed into a nano-sized yarn shape. Thus, the polymeric material may be present in the injection pump in a molten state in the solvent.

Further, in the case of the directional lamination (Directional ES) method, the cylindrical member rotates at a predetermined speed in consideration of the speed at which the nanofiber is extracted, or the plate member reciprocates according to the speed at which the nanofiber is generated, .

The manner of attachment of these two members can be determined in consideration of the degree or direction of shrinkage and expansion.

FIG. 2 (a) is a view showing an indicator including the actuator 100 according to an embodiment of the present invention, and FIG. 2 (b) is a view showing an indicator provided inside the case 2.

Referring first to FIG. 2 (a), an indicator of an embodiment of the present invention may include an actuator 100 and a body 200. Here, the actuator 100 may include the above-described actuator 100 positioned on one side of the body 200. Therefore, the description of the actuator 100 will be omitted, and the connection structure of the body 200, the body 200, and the actuator 100 will be described in detail later.

The body 200 may include a fixed portion 210 and a visual information portion 220. The fixing part 210 may be coupled to a part of the actuator 100 (for example, one end of the actuator 100), and the time information part 220 may be coupled to the measurement target substance (1) can be visually confirmed.

Specifically, the body 200 may have a fixing portion 210 formed on its outer surface. When the actuator 100 is coupled to the flat portion of the body 200, the fixed portion 210 may include a portion to be coupled to the actuator 200, It may mean. 2 and 3, an example in which the fixing part 210 of the intitator is protruded will be described as an example.

Since the fixing part 210 fixes one end of the actuator 100, when the actuator 100 becomes mobility in response to the measurement object 1, the position of the other end, which is opposite to the one end, . The trajectory formed by the position of the other end of the movement at this time may be formed at a position adjacent to the time information part 220 located on the surface facing the actuator 100 in the outer surface of the body 200.

Such a structure may be a structure for displaying visual information by reflecting the amount of moisture of the measurement target substance 1 in the air, that is, the momentum of the actuator 100 according to the high and low humidity.

Further, in order to further clarify the purpose of displaying with the time information, the humidity information in which the other end of the actuator 100 is positioned according to the momentum of the actuator 100 may be displayed in color. For example, in the case of (a), the time information part 220 divided into four sections with different colors may be a gauge capable of displaying a humidity environment of one room by 25%.

Since the indicator for measuring the humidity condition in the air may be located in a relatively open position rather than being located in the compartment and the isolated place, the reliability of the measured value may be high, so that the actuator 100, which is coupled to the body 200, May be located at an exposed position from the outside.

On the other hand, in the case of (b), an indicator may be provided inside the case 2. (b) is a structure in which the actuator 100 reacts with a specific measurement target substance 1 in the air, and can be, for example, a blood alcohol concentration measuring instrument. At this time, the measurement target substance 1 may be an alcohol, and the first member 110 may be a member that expands in response to alcohol.

In addition, the inflow hole 2b through which the air containing alcohol flows may be formed to have a narrower air cross-sectional area than the discharge hole 2b through which the air containing alcohol is discharged. This structure is a structure for delaying the air introduced into the space in which the actuator 100 is located within the case 2, for a sufficient time to allow the actuator 100 to react with the alcohol contained in the air.

A filter (not shown) is disposed in the discharge hole 2b for the same purpose so that air can not be discharged from the discharge hole 2b when the air does not flow into the discharge hole 2a beyond a predetermined pressure It is possible.

Further, it is possible to prevent the air introduced from the inflow hole 2a from being rapidly discharged to the discharge hole 2b, and to prevent the air from staying inside the case 2 for a predetermined period of time to come into contact with the actuator 100 The inner space of the case 2 may be formed such that the airtightness and the cross-sectional area gradually increase and sharply decrease with respect to the air flow direction.

In the case of the indicator for displaying the alcohol concentration, the time information unit 220 may display a gauge, for example, a unit of% and a numerical value of 0.05 according to the alcohol content in the air.

The above-described indicator can visually confirm the blood alcohol concentration by the change of the actuator 100 when air is blown into the mouth through the inflow hole 2b when the human being uses it. For example, it can be a device for measuring drinking water, and since an electronic alcohol meter may not include the power and metal materials required in measuring the magnitude of the current generated when the alcohol is burned, Lt; / RTI >

2 (a) and 2 (b) can be used to measure the amount of dissolved oxygen when the analyte 1 is dissolved oxygen dissolved in the water. Of course, in this case, the first member 110 may be formed of a member that reacts with dissolved oxygen.

However, in the case where the water to be measured is water with a high water content, the embodiment of (a) is preferable, and when the water to be water is water, the embodiment of (b) may be preferable. In the case of the flowing water, the description of (b), which is a preferred embodiment, is based on the same reason as the above-mentioned alcohol concentration measuring instrument, by delaying the fluid passing time, Can be increased.

In the case of the indicator indicating the dissolved oxygen amount DO, for example, the unit is expressed in ppm and mg / L according to the dissolved oxygen content in the water in the time information unit 220, and when the unit is pmm, Can be displayed.

FIG. 3 (a) is a view showing one side of an indicator according to another embodiment of the present invention, FIG. 3 (b) is a view showing the other side of the indicator, Fig.

Another embodiment of the present invention will be described with reference to FIG. The similar or similar contents to those of the above-mentioned other embodiments and those which can easily be changed by those skilled in the art will be omitted from the description and the differences will be mainly described. The indicator shown in Fig. 3 (a) is an indicator of another embodiment, and Fig. 3 (a) shows one side of the indicator. One side of the actuator 100 is coupled to the fixed portion 210 of the body 210 and the sensor portion 230 may be positioned on the outer surface of the body 200 facing the actuator 100 .

The sensing member 231 may be positioned at the other end of the actuator 100. The sensing member 231 may be a member or material that can be sensed according to the type of the sensor unit 230, such as a thin film metal or a fluorescent material.

(B) shows the outer surface of the body 200 facing the opposite direction of the surface shown in (a). A visual information part 220a may be formed on the outer surface facing the opposite direction. The time information unit 220a may be displayed by digitizing a signal transmitted from the sensor unit 230 that senses the position of the sensing unit 231. [

Here, the relative humidity or the absolute humidity can be displayed when the measured substance 1 to be measured by the indicator is water, for example, the unit is% and the numerical value can be expressed as 65.

The above process, that is, the process of detecting the measurement target substance 1 and displayed on the time information unit 220 will be described in detail with reference to (c). (c) shows the case where the indicator is located at one point of the partition 5. [ The indicator in which the visual information part 220a is positioned on the opposite surface of the exposed surface of the actuator 100 can be applied to various devices. For example, So that the content can be known in the outer space (4).

The surface to which the actuator 100 is exposed is disposed to face the inside 3 of the isolated space and the time information part 220a can be disposed to face the outside 4. [ This case can be applied to the measurement of the content of the substance to be measured 1 in the tank for discharging harmful gas or for maintaining the airtightness and watertightness of the outside and the outside.

the body 200 may include a visual information unit 220a, a controller 250, a fixing unit 210, and a sensor unit 230. [ . ≪ / RTI > The actuator 100 exposed toward the isolated inside 3 senses the measurement target substance 1 contained in the fluid in the inside 3 and may be deformed depending on the content.

The deformation can move the position of the other end of the actuator 100 which is not fixed. Since the sensing element 231 may be located at the other end, movement of the sensing element 231 means movement of the sensing element 231. The moved detector body 231 can detect the position by the sensor unit 230 and can transmit the position information of the detector body 231 to the controller 250. The position information can be converted into the content of the measurement target substance 1 in the control unit 250, and the information converted into the content can be numerically converted and transmitted to the time information unit 220a. The time information unit 220a can display the information through a number.

Here, the transmission may be the transmission and reception of electrical signals by the connection unit 6 connecting the sensor unit 230, the control unit 250, and the time information unit 220a.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, . Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

1: substance to be measured
2: Case
2a: Inflow ball
2b: Discharge ball
3: Inside
4: External
5:
6: Connection
100: Actuator
110: first member
120: second member
200: Body
210:
220, 220a:
230:
231:
250:

Claims (9)

An actuator coupled to a first member having mobility in response to a measurement target material and a second member having mobility different from the motility or non-reactivity with respect to the measurement target material;
And a body provided with at least a part of a section through which the other end of the actuator can move by the movement and visually indicating the degree of the movement, , Indicator.
The method according to claim 1,
Said first member having said mobility that expands in response to said solvent.
The method according to claim 1,
Wherein the time information unit senses the position of the other end of the actuator and indicates the degree of the mobility as a numerical value.
The method of claim 3,
Wherein a metal thin film or a fluorescent material is positioned at the other end so that the position of the other end of the actuator is sensed by the sensor.
The method according to claim 1,
Wherein the time information unit is formed in a different color depending on the position of the other end of the actuator and transmits the degree of inclusion of the measurement target substance in the fluid contacting the first member as time information.
The method according to claim 1,
Wherein the measurement target substance is an alcohol,
Wherein the blood alcohol concentration gauge is displayed on the time information unit,
The method according to claim 1,
Wherein the measurement target substance is dissolved oxygen,
And a gauge of ppm or mg / L is displayed on the time information unit.
The method according to claim 1,
Wherein the actuator is located in a space exposed to the outside or in communication with the outside.
In an actuator that reacts with a measurement target substance,
A first member including a plurality of nanofibers capable of elongating and contracting by sensing the substance to be measured; And
And a second member that is non-reactive with respect to the measurement target substance,
Wherein the actuator is capable of visually displaying a content of fluid in the fluid of the measurement object through a degree of reactivity with the measurement target substance, and the plurality of nanofibers included in the first member are aligned in one direction.
KR1020160023692A 2016-02-26 2016-02-26 Actuator and indicator including the same KR101816634B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11435295B2 (en) * 2018-09-05 2022-09-06 Yokogawa Electric Corporation Sensor element and packaged body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11435295B2 (en) * 2018-09-05 2022-09-06 Yokogawa Electric Corporation Sensor element and packaged body

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