KR20180018292A - Friction detection system and sensor for external motion - Google Patents

Abstract

The present invention relates to an external material transfer sensor, and more specifically, to an external material transfer sensor to detect whether an external material moves or not, and its moving speed and moving volume by using the change rate of potential difference. According to the present invention, the external material transfer sensor, which is an external material transfer sensor (100) to detect movement of an external material (M), comprises: a first member (110) made of a conductive material to have properties to be exposed to an external electrolyte environment and to be rubbed against the external material (M) by movement of the external material (M), thereby having a potential change; a second member (120) made of a conductive material to have properties to be exposed to the external electrolyte environment and to form a potential difference from the first member (110); and an insulation layer (140) combined with the first member (110) and the second member (120) in between the first member (110) and the second member (120).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an external material movement sensor,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an external material movement sensor, and more particularly, to an external material movement sensor that detects movement of a foreign material, a movement speed, and a movement amount using a rate of change in potential difference.

Cells using galvanic corrosion in electrolytic solutions (ground water, seawater, tap water, river water, water supply and sewage etc.) or electrolytic solutions existing in natural environment are corroded by the same chemical reaction as the voltaic cells. , The active (-) metal is rapidly corroded and disappears.

On the contrary, the combination using the corrosion-resistant conductive material has a potential difference of 0 V and a current of 0 mA because the corrosion reaction hardly occurs or the corrosion reaction is weakened by the oxide film over time, and it is used in the electrolytic solution existing in the natural environment It is not possible to use it as a sensor.

When the same conductive material is used (eg, iron-iron, aluminum-aluminum), both metals in the electrolytic solution present in the natural environment can not be used as sensors due to the fact that there is little potential difference or irregular low potential difference reversal.

That is, the conventional sensor has a strong corrosive property in the electrolyte solution and can not be used semi-permanently.

Therefore, it is necessary to develop a sensor which has a strong corrosion resistance while generating a potential difference in a natural environment in which an electrolyte solution is provided, and which can be used semi-permanently.

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide an electrostatic chuck capable of detecting a movement of an external material by causing a potential difference between a pair of materials, A sensor for detecting the movement of an external substance.

The present invention relates to an external material movement sensor 100 for sensing the movement of an external material M and is provided with an external material movement sensor 100 for sensing the movement of the external material M, A first member (110) having physical properties such that electric potential is changed by being exposed to an electrolyte environment and rubbing against the external material (M) by movement of the external material (M); A second member 120 made of a conductive material and exposed to an external electrolyte environment and having a physical property to form a potential difference with the first member 110; And an insulating layer (140) coupled between the first member (110) and the second member (120) between the first member (110) and the second member do.

The first member 110 may form a negative electrode in relation to the second member 120 by forming a lower potential than the second member 120 through friction with the external material M. [

The first member 110 may be made of the same conductive material as the second member 120.

The first member 110 may be made of a material that is located in the active direction with respect to the second member 120 on the galvanic system.

In one embodiment, the first member 110 and the second member 120 may be stacked and joined in a line.

In another embodiment, the first member 110 and the second member 120 may be formed extending in the direction of the external mass transfer sensor 100.

At this time, it is preferable that the insulating layer 140 has a water permeable material and is disposed around the second member 120.

For example, the first member 110 may have a cylindrical structure having a hollow inside.

At this time, the second member 120 is installed in the hollow, and the insulating layer 140 is made of a water-permeable material and can be installed between the first member 110 and the second member 120 have.

The external material migration sensor 100 may be provided with an external material M for peeling off the first material 110 when the first material 110 is exposed to the external material M, And a covering member 180 installed on the outer periphery of the one member 110. [

Meanwhile, a plurality of rods 134 radially extended from an edge of the first member 110 and electrically connected to the first member 110 may be exposed to the external environment and may be broken when the external material M is moved, And a third member 130 having a property of changing a potential difference between the second member 120 and the third member 130.

The third member 130 may be disposed between the insulating layer 140 and the first member 110 or may be disposed on an opposite surface of the second member 120 to the first member 110 .

The external mass transfer sensor 100 may further include an auxiliary sensor 150 for measuring an auxiliary measurement value including at least one of a temperature value, a geomagnetism value, an acceleration value, and a vibration value.

The external mass transfer sensor 100 may be installed in the ground or underwater to sense movement of the surrounding gravel or fluid.

In another aspect, an external mass transfer detection system according to the present invention comprises: an external mass transfer detection sensor (100) according to at least one of claims 1 to 10; And a potential difference measuring unit 210 connected to the external mass transfer sensor 100 through a terminal unit to measure a potential difference between the first member 110 and the second member 120.

The external material movement detection system may further include an operation processing unit 220 for calculating the rate of change of the potential difference based on the potential difference measured through the potential difference measurement unit 210 so as to detect the movement of the external material .

The foreign substance movement detection system may further include a display unit 240 for displaying the external mass movement detection result through at least one of visual and auditory.

The operation processing unit 220 can calculate at least one of the moving speed, the displacement, and the movement amount of the foreign substance M based on the rate of change of the potential difference.

The external material movement detection sensor 100 may further include an auxiliary sensor 150 for measuring an auxiliary measurement value including at least one of a temperature value, an acceleration value, and a vibration value according to the change of the external environment.

The external material movement detection system may further include a result evaluation unit 230 for correcting the rate of change of the potential difference calculated by the calculation processing module based on the auxiliary measurement value measured by the auxiliary sensor 150 can do.

The external mass transfer detection system may include a plurality of external mass transfer sensors 100.

At this time, the plurality of external mass transfer sensors 100 may be arranged in a line and connected in series with the potential difference measuring unit 210.

The external mass transfer sensor according to the present invention has an advantage in that it can detect movement of various external substances existing in a natural environment by using a potential difference generated by being affected by friction or strain on one of the pair of conductive members .

Further, the external mass transfer sensor according to the present invention can be used in an extreme environment at a high temperature of 2500 degrees or more by utilizing a pair of conductive members having excellent durability and heat resistance such as tungsten (-) - carbon (+ There is an advantage that can be used.

FIG. 1 is a diagram illustrating an external material movement detection system according to an embodiment of the present invention.
2 is a schematic diagram illustrating the external material movement detection system of FIG.
3 is a front view showing an external substance movement detection sensor according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view showing the external substance movement detection sensor of Fig. 3; Fig.
5 is a plan view showing the external substance movement detection sensor of FIG.
FIG. 6 is a cross-sectional view illustrating an external material movement sensor according to another embodiment of the present invention.
7 is an exploded perspective view showing the external substance movement detection sensor of Fig.
FIG. 8 is a cross-sectional view illustrating an external material movement sensor according to another embodiment of the present invention.
9 is an exploded perspective view showing the foreign matter movement detection sensor of FIG.
FIG. 10 is a diagram illustrating an external material movement detection system according to another embodiment of the present invention.
11 is a cross-sectional view in the AA direction in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an external material movement detection sensor and a foreign material movement detection system including the same according to the present invention will be described with reference to the accompanying drawings.

The external material movement detection system is installed in a place providing electrolytic environment (underground water, seawater, tap water, river water, water supply and sewage etc.) such as underwater of sea, river, And is not limited to one field as a system for detecting the change of the external environment by sensing the movement of the foreign substance.

For example, the external material movement detection system may detect a change in the environment constituted by the external material M (for example, a change in the underground such as a subsidence phenomenon such as a ground settlement phenomenon) by sensing the movement of an external material M, Erosion of underwater bridges or beams, water and sewage pipe leakage, changes in flow of molten metal or lava, etc.).

In one embodiment, the external mass transfer detection system according to the present invention includes at least one external mass transfer sensor 100 for sensing the movement of the external mass M, as shown in FIGS. 1 and 2 can do.

The external mass transfer sensor 100 utilizes a principle in which a potential difference is generated between the pair of conductive members when a friction is applied to one of a pair of conductive members connected to each other in an electrolyte environment to flow a current.

Experiments have shown that increasing the potential difference between titanium and carbon when rubbing titanium in titanium and carbon in the electrolyte environment.

At this time, a potential difference is generated between the pair of conductive members even when the pair of conductive members are made of the same material as well as in the case of the opposite polarity of the galvanic series.

More specifically, the external mass transfer sensor 100 is provided in an electrolyte environment, in which a thermoelectric phenomenon and an oxidation reaction occur in a member which is rubbed or deformed by an external material M among a pair of conductive members, A reduction reaction occurs in the member to form a potential difference.

The term "thermoelectric image" means a phenomenon in which current flows when two ends of two kinds of metals having different kinds are connected to each other and the temperature of the junction is different. The thermoelectric phenomenon due to friction due to friction or deformation force by the external material Can be generated together with the oxidation reaction.

For example, in the case of applying friction to titanium, energy is about 2% of the energy required for heating in order to obtain a value (approximately 2 mV or so) almost equal to the current and voltage generated when heated. That is, the current value and the voltage value due to the thermoelectric phenomenon can be obtained more easily than when applying heat, as compared with the case where heat is applied.

The thermoelectric image caused by such friction is more effectively generated in the electrolyte environment such as the water of the natural environment than in the atmosphere.

On the other hand, in general, a combination of high electric potential difference and high electric current conditions in a galvanic corrosion reaction in an electrolytic environment existing in a natural environment is used for a sensor that can be used for a long period of time because the oxidized side (active) I can not.

For this reason, even if a combination of corrosion-resistant conductive members is used for a long period of semi-permanent use, the case is less reactive and the corrosion reaction hardly occurs, or the corrosion reaction is weakened over time, Can not be used in a sensor usable in an electrolytic environment existing in a natural environment because a potential difference of 0 V and a current is close to 0 mA.

Thus, the present invention is based on the discovery that friction or deformation (e.g., deformation) of one or both of a pair of materials (e.g., titanium-titanium, titanium-carbon rods ...) having strong corrosion resistance and conductivity that can not be used as sensors in conventional electrolyte environments A potential difference of 0.5 V or more and a current of 1 mA or more are generated to constitute an external mass transfer sensor 100 using the principle of reactivity to the electrolyte environment existing in a natural environment and the phenomenon of thermoelectricity.

Accordingly, in the present invention, when there is almost no change in the external environment and there is almost no movement of the external material (M), the corrosion reaction rarely occurs and the life of the conductive member is very long. Even if the reaction occurs, there is an advantage that the corrosion is caused only at the portion where the friction or the deforming force by the external substance (M) is applied, so that it can be used semi-permanently.

For example, the external mass transfer sensor 100 may be made of a conductive material and may be exposed to an external electrolyte environment to rub against the external material M by movement of the external mass M, A first member (110); A second member (120) made of a conductive material and having a property of forming a potential difference with the first member (110) by being exposed to an external electrolyte environment; And an insulating layer 140 coupled between the first member 110 and the second member 120 between the first member 110 and the second member 120.

The first member 110 may be made of a conductive material and may have a variety of materials and shapes so long as it has a physical property such that friction or strain due to the external material M can be applied thereto and the potential difference is changed in the electrolyte environment.

Preferably, the first member 110 is formed of a corrosion-resistant metal such as titanium, which is resistant to corrosion in an electrolytic environment for semi-permanent use.

The second member 120 is made of a conductive material and is configured to be exposed to an external electrolyte environment and to prevent friction with the external material M, and may have a variety of configurations.

That is, the second member 120 is disposed in the electrolyte environment together with the first member 110, but unlike the first member 110, the second member 120 is installed so as not to substantially apply friction or deformation by the external material M desirable.

The first member 110 may be made of a material that is located in the active direction or may be made of the same conductive material as the second member 120 on the galvanic system.

For example, when the first member 110 is made of titanium, the second member 120 may be made of a carbon material or may be made of the same titanium material as the first member 110.

In this case, the first member 110 forms a negative electrode in relation to the second member 120 by forming a lower potential than the second member 120 through friction with the external material M, The second member 120 may be an anode in relation to the first member 110. [

The insulating layer 140 is a structure for electrically insulating the first member 110 and the second member 120 in an electrolyte environment and electrically connects the first member 110 and the second member 120 to each other. Various materials and shapes are possible if they are insulated.

The first member 110 and the second member 120 are insulated by an insulating layer 140 and connected to an external connection cable 300 except that charge is moved through the electrolyte environment 312, and 314, respectively.

4, 6, 8, 9, and 11, the connection cable 300 is illustrated as passing through the inside of the external mass transfer sensor 100. However, The installation of the cable 300 is not limited thereto.

That is, if the connection cable 300 functions as a signal line of the external mass transfer sensor 100, various structures, shapes, and arrangements are possible.

In addition, the connection cable 300 can be installed so that the foreign substance movement detection sensors 100 are arranged in a line, as well as a plurality of foreign substance movement detection sensors 100 And can be installed to be connected.

Accordingly, the plurality of external mass transfer sensors 100 can be installed in the ground or underwater in the form of a mesh.

At this time, even if there is no friction with the external material M, the first member 110 is exposed to the electrolyte environment, so that a relatively lower potential value than the second member 120 is formed.

That is, when the first member 110 does not rub against the external material M because there is no change in the external environment, a constant potential difference is formed between the first member 110 and the second member 120.

For example, when the first member 110 is made of titanium and the second member 120 is made of carbon, the potential difference between the first member 110 and the second member 120 is It appears to be approximately 0.6V.

At this time, when the first member 110 is rubbed by the external material M or the first member 110 is deformed by the foreign substance M due to a change in the external environment, the first member 110 Is changed.

This change in the potential value causes a potential difference change between the first member 110 and the second member 120 so that by measuring the degree of potential difference change between the first member 110 and the second member 120, Can be detected.

The first member 110 and the second member 120 may have various shapes and coupling relations depending on the external environment in which the first member 110 and the second member 120 are installed.

In one embodiment, the first member 110 and the second member 120 may be stacked and joined together in a line, as shown in Figs. 3-9.

At this time, the first member 110 and the second member 120 may be formed into a cylindrical shape and stacked in the longitudinal direction, or may be formed in a conical shape whose planar shape decreases in the longitudinal direction.

In this case, the external mass transfer sensor 100 may include a portion exposed to the external material M of the second member 120 to prevent friction between the second member 120 and the external mass M And may further include a cover member 112 for covering.

At this time, the cover member 112 exposes the second member 120 to the external electrolyte environment so that the charge can be transferred between the first member 110 and the second member 120, 112a are formed.

For example, the opening 112a may have a circular shape and may be formed along the periphery of the cover member 112, but may function as an electrolyte passage through which charge is transferred between the first member 110 and the second member 120 It goes without saying that various shapes and arrangements are possible if possible.

The second member 120 is installed in the inner space formed by the cover member 112 and the first member 110 so that the friction between the second member 120 and the external material 120 can be minimized .

In this case, when the first member 110 is formed of titanium material and the second member 120 is formed of carbon material, a long life and excellent signal value can be assured.

In another embodiment, the first member 110 and the second member 120 are formed of a multi-core structure (not shown) extending longitudinally in a state of being separated from each other by a water- As shown in FIG.

Here, the first member 110 and the second member 120 may have various structures such as a line of conductive material or a sheet of conductive material.

At this time, the insulating layer 140 is preferably disposed around the second member 120.

In this case, since the first member 110 and the second member 120 are relatively long in the longitudinal direction, the first member 110 and the second member 120, It is preferable that the protrusion 140 is formed of a water permeable material.

For example, the first member 110 may have a cylindrical structure having a hollow inside.

At this time, the second member 120 is installed in the hollow, and the insulating layer 140 may be installed between the first member 110 and the second member 120.

In FIG. 11, the first member 110 is shown to surround the entire outer circumference of the second member 120, but it may be configured to surround a part of the outer circumference of the second member 120.

When the first member 110 is configured to surround the entire outer perimeter of the second member 120, the first member 110 may be configured such that the second member 120 is exposed to the electrolyte environment. And may be formed into a porous structure having water permeability.

As an example, the first member 110 may further include a perforation 110a formed in the outer periphery for the electrolyte passage for exposing the second member 120 to the electrolyte environment, as shown in FIG. 11 Needs to be.

The first member 110 is configured to allow the electrolyte to pass therethrough. The perforation 110a is an example and may be configured in various forms through which the electrolyte can pass.

As an example, an electrolyte passageway may be provided in the form of a wire surrounded by a plurality of strands of conductive material surrounding the insulator 140.

10, it is needless to say that the first member 110 and the second member 120 may be installed in the ground or in the water in the horizontal direction rather than the vertical direction as in FIG.

For example, the external mass transfer sensor 100 may be installed horizontally below permeable (e.g., asphalt) or impervious (e.g., concrete) surfaces to detect mass transfer under the surface have.

In this case, it is needless to say that a plurality of external mass transfer sensors 100 may be connected through the connection cable 300 and installed horizontally.

Only the terminal portions 312 and 314 for measuring the potential difference of one external mass transfer sensor 100 need to be connected to each other when only one external mass transfer sensor 100 installed in the horizontal direction is constituted And the configuration of the connection cable 300 for connecting the plurality of external mass transfer sensors 100 is not essential.

At this time, the terminal portions 312 and 314 may be provided at appropriate positions in the external mass transfer sensor 100 (for example, between the second member 120 and the insulating layer 140 or the insulating layer 140) Of course.

When the external mass transfer sensor 100 is installed below the water permeable surface, it is possible to prevent the oxidation reaction and the thermoelectric reaction in the first member 110 from occurring due to the permeable road surface even when there is little change in the external environment The cover member 180 may further include a cover member 180 for preventing friction between the first member 110 and the external material M when there is little change in the external environment.

The covering member 180 may be peeled off when the first member 110 is rubbed with the external material M to a predetermined strength or more and the second member 110 may be peeled off to expose the first member 110 to the external material M. [ It is preferable to be installed on the outer periphery.

In addition, the cover member 180 may be formed of a water-permeable material.

For example, the cover member 180 may be made of a water-permeable plastic material.

The connection cable 300 may be installed inside the second member 120 or between the second member 120 and the insulator 140 or may be installed in the insulator 140, .

Similarly, the terminal portions 312 and 314 may be provided inside the second member 120 or between the second member 120 and the insulator 140 if they function as signal lines of the external mass transfer sensor 100 Or may be installed in the insulator 140.

Also in this case, as described above, when the first member 110 is formed of a titanium material and the second member 120 is formed of a carbon material, a long life and an excellent signal value can be assured.

The external mass transfer sensor 100 is electrically connected to the first member 110 and has a plurality of rods 134 extending radially from an edge thereof and is exposed to the external environment, And a third member 130 that changes a potential difference between the first member 120 and the second member 120 when the movable member M is moved.

The third member 130 corresponds to a member that changes its potential value by breaking due to the deformation force generated when the foreign material M moves, and forms a potential difference with the second member 120.

The third member 130 may be made of the same material as the first member 110 or may be made of a metal alloy in which an insulator is coated on the outside (for example, zinc or an aluminum alloy or a magnesium alloy in which a corrosion reaction occurs well) .

The third member 130 may be made of a material that exhibits excellent corrosion behavior in an electrolytic environment (e.g., insulator coated aluminum (third member 130) - carbon bar (second member 120), insulator coated zinc (The third member 130), the carbon bar (the second member 120), etc.), when the friction or deformation is applied to aluminum or zinc, the potential difference is about 0.7 V State) to 1.2V and the current rises to 3-5mA at the 1-2mA level (not coated with an insulator).

Such a combination is suitable for short-term use due to its short life due to corrosion, but has an advantage of obtaining an excellent potential difference response signal at low cost.

The third member 130 may include a plurality of rods 134 extending radially from the edge of the central region 132, as shown in FIGS.

The plurality of rods 134 may have a bar form so as to be broken when a predetermined deforming force is applied to a portion broken by a deformation force generated when a foreign substance M moves, but the present invention is not limited thereto.

4 and 6, the third member 130 may be disposed between the insulating layer 140 and the first member 110 or may be disposed between the first member 110 and the first member 110 of the second member 120, But it is not limited to this.

The third member 130 may have various shapes and may be installed at various positions according to the installation position and the coupling relation of the first member 110 and the second member 120.

6, when the third member 130 is disposed on the opposite surface of the second member 120 to the first member 110, the third member 130 and the third member 130 Between the two members 120, an insulating layer 160 may be formed.

The through holes 130a and 160a passing through the third member 130 and the insulating layer 160 may correspond to an electrolyte passage exposing the second member 120 to the external electrolyte environment.

Meanwhile, the external mass transfer sensor 100 may further include an auxiliary sensor 150 for measuring an auxiliary measurement value including at least one of a temperature value, a geomagnetism value, an acceleration value, and a vibration value.

For example, the auxiliary sensor 150 may be installed in an empty space S formed in the first member 110, as shown in FIGS.

The auxiliary sensor 150 may provide auxiliary data (temperature value, geomagnetism value, acceleration value, vibration value, or the like) necessary for detecting foreign substance movement.

The first member 110, the second member 120, and the auxiliary sensor 130 may be electrically connected to each other through the connection cable 300.

The connection cable 300 includes a plurality of wire groups having terminal portions 312 and 314 connected to external connection terminal regions of the first member 110 and the second member 120, And an insulating coating for protecting the plurality of conductive wire groups.

For example, the connection cable 300 may be installed to pass through the centers of the first member 110 and the second member 120.

As shown in FIG. 1, the connection cable 300 electrically connects one external mass transfer sensor 100 to another external mass transfer sensor 100 or a central processing unit 200 And may be installed to be electrically connected.

In addition to the at least one external mass transfer sensor 100, the external mass transfer detection system may be connected to the external mass transfer sensor 100 through the terminal units 132 and 134, And a central processing unit (200) for calculating a rate of change in potential difference between the two members (120).

For example, the central processing unit 200 may be connected to the external mass transfer sensor 100 through terminal portions 132 and 134 to measure a potential difference between the first member 110 and the second member 120 A potential difference measuring unit 210 for measuring the potential difference; And an operation processing unit 220 for calculating the rate of change of the potential difference based on the potential difference measured through the potential difference measurement unit 210 to detect the movement of the external material M. [

The potential difference measuring unit 210 is connected to the external mass transfer sensor 100 through the terminal units 132 and 134 to measure a potential difference between the first member 110 and the second member 120 Various configurations are possible. For example, the potential difference measuring unit 210 may be configured as a voltmeter that measures a potential difference between the first member 110 and the second member 120.

The potential difference measuring unit 210 may be connected in series with the plurality of external mass transfer sensors 100 when a plurality of external mass transfer sensors 100 are installed as shown in FIG.

In this case, the distance D between each of the external mass transfer sensors 100 may be set to be 2.5 or less, m.

In this case, the potential difference measuring unit 210 may measure a potential value that is obtained by adding the potential difference measured by the plurality of external mass transfer sensors 100 as shown in Equation (1) below.

[Equation 1]

V = V1 + V2 + ... + VN

V1 denotes a potential difference in the first sensing sensor 100, V2 denotes a potential difference in the second sensing sensor 100, and VN denotes a potential difference in the Nth sensing sensor 100. [

The arithmetic processing unit 220 may be configured to calculate the rate of change of the potential difference based on the potential difference measured through the potential difference measuring unit 210 in order to detect the movement of the foreign substance M.

The operation processing unit 220 can calculate a potential difference change between the first member 110 and the second member 120 with time.

At this time, based on the calculated potential difference change rate (for example, the calculated magnitude of the potential difference rate, the variation duration, the variation pattern, etc.), the operation processing unit 220 calculates the moving speed, displacement, Can be calculated.

In the case where the external mass transfer sensor 100 further includes the auxiliary sensor 150, the central processing unit 200 may determine whether the external mass transfer sensor 100 has received the auxiliary measurement value from the auxiliary processing unit 150, And may further include a result evaluation unit 230 for correcting the calculated rate of change of the potential difference.

The resultant value calculated by the calculation processing unit 220 through the result value estimating unit 230 is corrected so that foreign substance movement detection, that is, external environment change detection can be performed more accurately.

Meanwhile, the central processing unit 200 may further include a display unit 240 for displaying the result of the external mass transfer detection through at least one of time and hearing.

The display unit 240 displays an alert sound or a visual indication on the screen when an emergency situation such as soil erosion, leg erosion, water leakage is detected by the foreign substance movement detection sensor 100, It is possible.

The central processing unit 200 includes a power supply unit for supplying power to the potential difference measuring unit 210, the arithmetic processing unit 220, the result calculating unit 230, the display unit 240 and the auxiliary sensor 150 260). ≪ / RTI >

The power supply unit 260 is connected to the external mass transfer sensor 100 through a connection cable 300 independently of the external mass transfer sensor 100 as shown in FIG. .

For example, the power supply unit 260 may be configured as a solar cell unit 170 to form its own power.

The solar cell unit 170 may include a transparent member 172 for collecting light and a solar cell 174 for converting solar energy into electric energy.

Meanwhile, the central processing unit 200 may further include a communication unit 250 capable of communicating with an external terminal for communication functions such as Internet of Thing (IOT).

The communication unit 250 can transmit and receive data calculated through the external material movement detection sensor 100 and control data for controlling the external material movement detection system by communicating with an external terminal through wireless communication .

According to the above-described structure, even when the first member 110 and the second member 120 are made of the same material or the same material and the potential difference formed in the electrolyte environment is very low, Is affected by friction or strain by the external material (M), thereby generating a potential difference change, thereby realizing a sensor having long durability and heat resistance.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

100: external mass transfer sensor 110: first member
120: second member 130: third member

Claims (18)

An external substance movement sensor (100) for detecting the movement of a foreign substance (M)
A first member 110 made of a conductive material and having a physical property such that the electric potential is changed by being exposed to an external electrolyte environment and rubbing against the external material M by movement of the external material M;
A second member 120 made of a conductive material and exposed to an external electrolyte environment and having a physical property to form a potential difference with the first member 110;
And an insulating layer (140) coupled between the first member (110) and the second member (120) between the first member (110) and the second member (120) Detection sensor (100). The method according to claim 1,
The first member (110)
Wherein the second member (120) forms a negative electrode in relation to the second member (120) by forming a lower potential than the second member (120) through friction with the external material (M). The method of claim 2,
Wherein the first member (110) is made of the same conductive material as the second member (120). The method of claim 2,
Wherein the first member (110) is made of a material that is positioned in the active direction on the galvanic system than the second member (120). The method according to claim 1,
Wherein the first member (110) and the second member (120) are stacked and joined in a line. The method according to claim 1,
The first member 110 and the second member 120 are formed to extend in the direction of the external mass transfer sensor 100,
Wherein the insulating layer (140) has a water permeable material and is disposed around the second member (120). The method of claim 6,
The first member 110 has a cylindrical structure having a hollow inside,
The second member (120) is installed in the hollow,
Wherein the insulating layer (140) is installed between the first member (110) and the second member (120). The method of claim 9,
A cover member provided on an outer circumferential surface of the first member 110 to expose the first member 110 to the external material M when the first member 110 is rubbed with the external material M for a predetermined strength or more, Further comprising a sensor (180). The method of claim 5,
A plurality of rods 134 radially extending from an edge of the first member 110 and electrically connected to the first member 110. The first member 110 is exposed to the external environment and is broken when the external material M is moved, And a third member (130) having a property of changing a potential difference between the third member (130) and the third member (130). The method of claim 9,
The third member (130)
Is disposed between the insulating layer (140) and the first member (110) or disposed on an opposite surface of the second member (120) to the first member (110) (100). The method according to claim 1,
Further comprising an auxiliary sensor (150) for measuring an auxiliary measurement including at least one of a temperature value, a geomagnetism value, an acceleration value, and a vibration value. The method according to any one of claims 1 to 11,
Wherein the external mass transfer sensor (100) is installed in the ground or underwater and senses the movement of the surrounding mass or the mass of fluid. An external mass transfer sensor (100) according to at least one of claims 1 to 11;
And a potential difference measuring unit 210 connected to the external mass transfer sensor 100 through the terminal units 312 and 314 and measuring a potential difference between the first member 110 and the second member 120 Characterized by an external mass transfer detection system. 14. The method of claim 13,
And an operation processing unit (220) for calculating a rate of change of the potential difference based on the potential difference measured through the potential difference measurement unit (210) in order to detect the movement of the foreign substance (M) system. 14. The method of claim 13,
And a display unit (240) for displaying the result of the external mass transfer detection through at least one of visual and auditory. 15. The method of claim 14,
The arithmetic processing unit 220,
And calculating at least one of a moving speed, a displacement, and a moving amount of the foreign substance (M) based on the variation rate of the potential difference. 15. The method of claim 14,
The external mass transfer sensor 100 may include,
Further comprising an auxiliary sensor (150) for measuring an auxiliary measurement value including at least one of a temperature value, a geomagnetism value, an acceleration value and a vibration value according to a change of the external environment,
(230) for correcting the rate of change of the potential difference calculated by the calculation processing module based on the auxiliary measurement value measured by the auxiliary sensor (150) . 14. The method of claim 13,
A plurality of external mass transfer sensors 100,
Wherein the plurality of external mass transfer sensors (100) are arranged in a line and connected in series with the potential difference measuring unit (210).

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