KR102593657B1 - Leak detection sensor and distance measuring device using the same - Google Patents

Abstract

The purpose of the present invention is to provide a leak detection sensor that is easy to manufacture and calculates and displays the distance to the location where the leak occurs, and a distance measuring device using the same. For this purpose, the present invention includes a base sheet portion in which a plurality of sensing portion through-holes are formed at regular intervals along the longitudinal direction of a rectangular shape; a first conductive line installed in a random pattern along the longitudinal direction on the upper surface of the base sheet portion using a conductive material; a second conductive wire installed parallel to the first conductive wire by a predetermined distance on the upper surface of the base sheet using a conductive material; and a third conductive wire installed using a conductive material along the longitudinal direction on the rear surface of the base sheet unit, and installed in a zigzag pattern where a portion is drawn out to the upper surface of the base sheet unit through the detection unit through hole and then retracted to the rear side. Includes. Therefore, the present invention has the advantage of easily detecting leakage or leakage, being easy to manufacture, and displaying the distance to the location where the leak occurred, allowing the user to quickly confirm the location of the accident.

Description

Leak detection sensor and distance measuring device using the same {LEAK DETECTION SENSOR AND DISTANCE MEASURING DEVICE USING THE SAME}

The present invention relates to a leak detection sensor and a distance measuring device using the same. More specifically, it relates to a leak detection sensor that is easy to manufacture and calculates and displays the distance to the location where the leak occurred, and a distance measuring device using the same. will be.

Various types of leak detection sensors are used to detect water leaks and leaks.

These leak detection sensors determine whether there is a leak by detecting a change in resistance value that occurs when the leaked material comes into contact with the surface of the conductive wire of the sensor.

For example, conventional leak detection sensors detect leakage of a detection target material using the principle that when a leaked conductive liquid comes into contact with the surface of a sensor on which a conductive pattern is formed, the conductive pattern becomes electrically conductive.

However, although the leak detection sensor according to the prior art can easily detect whether a leak has occurred, there is a problem in that it cannot confirm the distance between the location where the water leak or oil leak occurred and the location where the water leak or oil leak occurred.

Korean Patent Publication No. 10-2007-0005234 Japanese Public Utility Model Publication No. 01-171340

In order to solve this problem, the purpose of the present invention is to provide a leak detection sensor that is easy to manufacture and calculates and displays the distance to the location where the leak occurs, and a distance measuring device using the same.

In order to achieve the above object, the present invention includes a base sheet portion having a plurality of sensing portion through-holes formed at regular intervals along the longitudinal direction of a rectangular shape; a first conductive line installed in a random pattern along the longitudinal direction on the upper surface of the base sheet portion using a conductive material; a second conductive wire installed parallel to the first conductive wire by a predetermined distance apart from the first conductive wire using a conductive material on the upper surface of the base sheet portion; and a third conductive wire installed using a conductive material along the longitudinal direction on the rear surface of the base sheet unit, and installed in a zigzag pattern where a portion is drawn out to the upper surface of the base sheet unit through the detection unit through hole and then retracted to the rear side. Includes.

In addition, the base sheet part according to the present invention is characterized by being made of resin or fluorine-based resin.

In addition, the sensing unit through-hole according to the present invention includes a first through-hole formed so that the third conductive wire is drawn out from the rear surface of the base sheet portion to the upper surface; and a second through hole spaced apart from the first through hole by a predetermined distance and formed to allow a third conductive wire drawn out from the upper surface of the base sheet part to be introduced into the rear side of the base sheet part.

In addition, the first to third conductive lines according to the present invention are characterized in that they are made of either a solid line of conductive ink or a braided line.

In addition, the leak detection sensor according to the present invention is characterized by further comprising a termination resistor that electrically connects one end portion of the first to third conductive lines.

In addition, the present invention includes a base sheet portion in which a plurality of sensing unit through-holes are formed at regular intervals along the longitudinal direction of a rectangular shape, and a base sheet portion installed in a random pattern using a conductive material along the longitudinal direction on the upper surface of the base sheet portion. 1 conductive wire, a second conductive wire installed in parallel with the first conductive wire using a conductive material on the upper surface of the base sheet part at a certain distance, and a conductive wire installed along the longitudinal direction on the back surface of the base sheet part using a conductive material; , a third conductive wire installed in a zigzag pattern, a portion of which is drawn out from the upper surface of the base sheet portion through the through-hole of the sensing unit and then drawn into the back side, and one end portion of the first conductive wire, the second conductive wire, and the third conductive wire. A leak detection sensor having a termination resistor electrically connected to; and supplies a constant voltage and current to the liquid leak detection sensor, stores a pre-measured reference resistance value of the first conductive line and a reference resistance value of the second conductive line, and stores the first resistance value generated by leakage from the liquid leak detection sensor. and a control unit that detects a change in the resistance value of the second conductive line and calculates the distance to the leakage location according to the detected resistance value.

In addition, the control unit according to the present invention stores a reference resistance value measured according to an arbitrary position of the first conductive line and the second conductive line, and distance information converted to correspond to the reference resistance value, and the detection unit through hole When leakage is detected at the site, the resistance (R1) between the first and third conductive wires forming a closed loop and the resistance (R2) between the second and third conductive wires are measured, and the R1 It is characterized in that distance information is measured by comparing the resistance value calculated by the ratio of and R2 with a pre-stored reference resistance value.

In addition, the control unit according to the present invention further includes a display unit that displays the calculated distance information.

In addition, the reference resistance value according to the present invention is characterized in that it is a resistance value measured at the location where the sensing unit through-hole is installed in the base sheet part.

The present invention has the advantage of providing a leak detection sensor that can easily detect leakage or water leakage and is easy to manufacture.

Additionally, the present invention has the advantage of allowing the user to quickly confirm the location of the accident by calculating and displaying the distance to the location where the leak occurred.

1 is a perspective view showing a leak detection sensor according to the present invention.
Figure 2 is an exploded perspective view showing the configuration of the leak detection sensor according to Figure 1.
Figure 3 is a cross-sectional view showing the AA cross-sectional structure of the leak detection sensor according to Figure 1.
Figure 4 is a cross-sectional view showing the BB cross-sectional structure of the leak detection sensor according to Figure 1.
Figure 5 is a cross-sectional view showing the CC cross-sectional structure of the leak detection sensor according to Figure 1.
Figure 6 is a block diagram schematically showing a distance measuring device using a leak detection sensor according to the present invention.
Figure 7 is an exemplary diagram showing the electrical configuration of a distance measuring device using a leak detection sensor according to Figure 6.
Figure 8 is an exemplary diagram showing another electrical configuration of a distance measuring device using a leak detection sensor according to the present invention.

Hereinafter, a preferred embodiment of a leak detection sensor and a distance measuring device using the same according to the present invention will be described in detail with reference to the attached drawings.

In this specification, the expression that a part “includes” a certain element does not mean excluding other elements, but means that it may further include other elements.

In addition, terms such as "‥unit", "‥unit", and "‥module" refer to a unit that processes at least one function or operation, which can be divided into hardware, software, or a combination of the two.

(Leak detection sensor)

Figure 1 is a perspective view showing a leak detection sensor according to the present invention, Figure 2 is an exploded perspective view showing the configuration of the leak detection sensor according to Figure 1, and Figure 3 is a cross-sectional view showing the A-A cross-sectional structure of the leak detection sensor according to Figure 1. , FIG. 4 is a cross-sectional view showing the B-B cross-sectional structure of the leak detection sensor according to FIG. 1, and FIG. 5 is a cross-sectional view showing the C-C cross-sectional structure of the leak detection sensor according to FIG. 1.

1 to 5, the leak detection sensor 100 according to the present invention includes a base sheet portion 110, a first conductive line 120, a second conductive line 130, and a third conductive line. It is composed of a line 140 and a termination resistor 150.

The base sheet portion 110 is a strip-shaped (or plate-shaped) member made of resin or fluorine-based resin, and is made to have corrosion resistance to chemicals, and is preferably made of fluorine-based resin.

Additionally, the base sheet portion 110 may be formed by immersing mesh-shaped glass fibers or silica fibers in a fluorine-based resin solution for a certain period of time.

In addition, the fluorine-based resin may have excellent chemical resistance and heat resistance, for example, ETTE (Ethylene Tetra Fluoroe Ethylene), FEP (Flourinated Ethylene Prophylene), PTFE (Poly Tetra Fluoroethylene), PFA (Perfluorinated Acids), etc.

In addition, the base sheet unit 110 is provided with sensing unit through-holes 111 and 111' formed at regular intervals along the longitudinal direction of the rectangular base seat unit body.

The sensing unit through-holes 111 and 111' are through-holes formed so that the third conductive wire 140 installed on the back of the base sheet 110 extends from the back to the top of the base sheet 110. The first through holes 111a, 111a' and a third conductive line 140 extending from the upper surface of the base sheet portion 110 at a certain distance from the first through holes 111a, 111a' are connected to the base. It is configured to include second through holes 111b and 111b' formed to be introduced into the rear side of the seat portion 110.

That is, the sensing unit through-holes 111 and 111' allow the third conductive wire 140 to be exposed at regular intervals on the upper surface of the base sheet unit 110.

In addition, the sensing unit through-hole 111 is formed to have a preset gap with the adjacent sensing unit through-hole 111', and the gap is determined by the self-resistance of the first conductive line 120 and the second conductive line 130. The value is formed for each length having a differentiated resistance value according to the length of the first and second conductive lines 120 and 130.

The first conductive wire 120 is installed in a random pattern using a conductive material along the longitudinal direction on the upper surface of the base sheet portion 110. By using a mixture of liquid fluorine resin and a conductive material, it is used to prevent chemicals. It performs a leak detection function using corrosion resistance and electrical conductivity.

In addition, the first conductive line 120 may be formed by applying or printing a mixture of the fluorine-based resin and the conductive material on the base sheet portion 110 according to a preset line pattern, and is preferably formed as a thin film. It is made of a solid line (for example, conductive ink), and more preferably, it is made of a solid line having an arbitrary self-resistance value.

The second conductive wire 130 is installed in parallel with the first conductive wire 120 at a certain distance using a conductive material on the upper surface of the base sheet portion 110, and is composed of a liquid fluorine resin and a conductive material. By mixing and using it, it performs a leak detection function using corrosion resistance to chemicals and electrical conductivity.

In addition, the second conductive line 130 may be formed by applying or printing a mixture of the fluorine-based resin and the conductive material on the base sheet portion 110 according to a preset line pattern, and is preferably formed as a thin film. It is made of a solid line (for example, conductive ink), and more preferably, it is made of a solid line having an arbitrary self-resistance value.

Additionally, one end of the second conductive line 130 is connected through a termination resistor 150 having a certain resistance value.

The third conductive line 140 is made of a conductive material along the longitudinal direction on the rear surface of the base sheet part 110, and is connected to the base sheet part 110 through the sensing unit through-holes 111 and 111'. It is installed in a zigzag pattern in which a portion is drawn out from the upper surface and then retracted into the back side, and is composed of thin film solid or braided lines so that bending or bending can be easily achieved.

In addition, one side of the third conductive line 140 is connected to the termination resistor 150 to which the first conductive line 120 and the second conductive line 130 are connected, thereby forming the first conductive line 120 and the second conductive line 130. A voltage of a certain magnitude can be formed with each of the second conductive lines 130.

That is, when leakage occurs, the third conductive line 140 forms a closed loop with the first conductive line 120 and the second conductive line 130, respectively.

The termination resistor portion 150 electrically connects one end portion of the first to third conductive lines 120, 130, and 140, and the first conductive line 120 and the second conductive line 130 are terminated. It is possible to maintain a short-circuit state or a voltage value of a certain level by the resistance value, and a first conductive wire installed between the first conductive line 120 and the third conductive line 140 inside the termination resistor portion 150. terminating resistor) and a second terminating resistor installed between the second conductive line 130 and the third conductive line 140.

(distance measuring device)

FIG. 6 is a block diagram schematically showing a distance measuring device using a leak detection sensor according to the present invention, and FIG. 7 is an exemplary diagram showing the electrical configuration of a distance measuring device using a leak detection sensor according to FIG. 6.

First, with respect to the leak detection sensor, the same reference numerals are used for the same components, and repeated descriptions of the same components are omitted.

When describing the distance measuring device according to the present invention with reference to FIGS. 1, 2, 6, and 7, the distance measuring device includes a leak detection sensor 100 having a certain length, a control unit 200, and a display unit ( 210).

The leak detection sensor 100 includes a base sheet part 110 in which a plurality of detection unit through-holes 111 and 111' are formed at regular intervals along the longitudinal direction of a rectangular shape, and a length on the upper surface of the base sheet part 110. A first conductive line 120 is installed in a random pattern using a conductive material along the direction, and a conductive material is used on the upper surface of the base sheet portion 110 to be spaced a certain distance apart from the first conductive line 120. A second conductive wire 130 installed in parallel and a conductive material are installed along the longitudinal direction on the back of the base sheet part 110, and are connected to the base through the sensing unit through-holes 111 and 111'. A third conductive wire 140 installed in a zigzag pattern that is partially drawn out from the upper surface of the seat portion 110 and then retracted into the rear side, the first conductive wire 120, the second conductive wire 130, and the third conductive wire 140. It is configured to include a termination resistor 150 that electrically connects one end of the conductive line 140.

The control unit 200 is installed on one side of the leak detection sensor 100, supplies a constant voltage and current to the leak detection sensor 100, and corresponds to the pre-measured reference resistance value of the first conductive line 120 and , the reference resistance value of the second conductive line 130 is stored, and the leakage detection sensor 100 detects a change in the resistance value of the first and second conductive lines 120 and 130 caused by leakage. Measure the distance to the location of leakage according to the measured resistance value.

That is, the control unit 200 determines the total resistance value according to the length of the first conductive line 120, which has its own resistance value, and the reference resistance value (R ₁₁ ) measured at an arbitrary position of the first conductive line 120. R ₁₂ , R ₁₃ ‥ R _1n ), a total resistance value according to the length of the second conductive line 130, and a reference resistance value measured at an arbitrary position of the second conductive line 130 (R ₂₁ , R ₂₂ , R ₂₃ ‥ R _2n ) or the converted length (or distance) information corresponding to the reference resistance value is stored, and when leakage is detected through the detection unit through-hole (111, 111'), it is transmitted to the leakage area (300). As a result, a closed loop is formed between the first conductive line 120 and the third conductive line 140 and between the second conductive line 130 and the third conductive line 140, respectively.

At this time, the control unit 200 is configured such that the first conductive line 120 and the second conductive line 130 are each connected to the (-) terminal, and the third conductive line 140 is connected to the (+) terminal. The position at which the reference resistance value is measured may be the resistance value measured at the same position as the position where the sensing unit through-holes 111 and 111' are installed in the base sheet part 110.

In addition, in a state where no liquid leakage occurs, the first conductive wire 120, the third conductive wire 140, the second conductive wire 130, and the third conductive wire 140 are connected to the first termination resistor 151 and the first terminal resistor 151, respectively. A random potential difference is formed by the second termination resistor 152.

Meanwhile, when leakage occurs and a leakage area 300 is formed at a random location of the leakage detection sensor 100, the first conductive line 120, the second conductive line 130, and the third conductive line 140 The closed loop between the first conductive line 120 and the third conductive line 140, which is formed when a short circuit occurs due to the liquid leakage area 300, includes a first voltage V1 of a certain magnitude, and the first voltage V1 of a certain magnitude. 1 Self-resistance is formed according to the length of the conductive line 120, thereby forming a resistance (R1) of a certain size.

In addition, a short circuit occurs between the second conductive line 130 and the third conductive line 140, which is formed due to the leakage area 300, and the second conductive line 130 and the third conductive line 140 are formed. In the closed loop formed between 140, a second voltage V2 of a certain size and self-resistance according to the length of the second conductive line 130 are formed to form a resistance R2 of a certain size.

The control unit 200 calculates a resistance value based on the ratio of R1 and R2 formed in the liquid leakage area 300, and divides the calculated resistance value into the previously stored lengths of the first and second conductive lines 120 and 130. By comparing it with the reference resistance value according to , distance information from the random starting point to the location where the leak occurred is calculated.

In addition, as shown in FIG. 8, the termination resistor 150a electrically connects one end of the first to third conductive lines 120, 130, and 140, and connects the first conductive line 120 and the second conductive line 150a. The line 130 is capable of maintaining a short-circuit state or a certain voltage value by the termination resistance value, and the first conductive line 120 and the third conductive line 140 are inside the termination resistance portion 150a. It can be configured so that a first termination resistor (151a) is installed between them, and a second termination resistor (152a) is installed between the first conductive line 120 and the second conductive line 130.

That is, by connecting the first termination resistor 151a and the second termination resistor 152a separately, the value initially input to the control unit 200 is different, but the accuracy of detecting the distance where leakage occurs can be further improved. You can.

Referring again to FIGS. 1, 2, 6, and 7, the display unit 210 is a component that displays distance information calculated by the control unit 200, and outputs a warning signal (not shown) when liquid leakage occurs. It consists of an alarm means such as a warning light, a light emitting element, and a speaker, and a display means such as a control unit 200 or an LCD that displays the calculated length (or distance) information.

Therefore, by calculating and displaying the distance to the location where the leak occurred, the user can quickly confirm the location of the accident.

As described above, the present invention has been described with reference to preferred embodiments, but those skilled in the art may make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can do it.

In addition, the drawing numbers described in the claims of the present invention are only used for clarity and convenience of explanation and are not limited thereto. In the process of explaining the embodiment, the thickness of the lines shown in the drawings, the size of the components, etc. may be exaggerated for clarity and convenience of explanation, and the above-mentioned terms are terms defined in consideration of functions in the present invention, which may vary depending on the intention or custom of the user or operator, so the interpretation of these terms should be decided based on the contents throughout this specification.

100: Leak detection sensor
110: Base sheet part
111, 111': Sensing unit through-hole
111a, 111a': first through hole
111b, 111b': second through hole
120: 1st conductive line
130: 2nd conduction line
140: Third conductive line
150, 150a: Termination resistance unit
151, 151a: first terminal resistor
152, 152a: second terminal resistor
200: control unit
210: display unit
300: Leakage area

Claims (9)

A base sheet portion 110 having a plurality of sensing portion through-holes 111 and 111′ formed at regular intervals along the longitudinal direction of a rectangular shape;
A first conductive line 120 installed in a random pattern along the longitudinal direction of the base sheet portion 110 using a conductive material;
a second conductive wire 130 installed parallel to the first conductive wire 120 at a predetermined distance apart from the first conductive wire 120 using a conductive material on the upper surface of the base sheet 110; and
It is installed on the back of the base sheet 110 along the longitudinal direction using a conductive material, and a portion is drawn out to the upper surface of the base sheet 110 through the sensing unit through-holes 111 and 111'. A leak detection sensor including a third conductive line 140 installed in a zigzag pattern leading into the back side. According to claim 1,
The base sheet portion 110 is a leak detection sensor, characterized in that made of resin or fluorine-based resin. According to claim 1,
The sensing unit through-holes 111 and 111' include first through-holes 111a and 111a' formed so that the third conductive line 140 is drawn out from the rear surface of the base sheet part 110 to the upper surface; and
The third conductive wire 140, which is spaced apart from the first through holes 111a and 111a' by a predetermined distance and is drawn out from the upper surface of the base sheet part 110, is formed to be introduced into the rear side of the base sheet part 110. A leak detection sensor comprising second through holes (111b, 111b'). According to claim 1,
A leak detection sensor, wherein the first to third conductive lines (120, 130, and 140) are made of either a solid line of conductive ink or a braided line. According to claim 1,
The leak detection sensor further includes termination resistors (150, 150a) that electrically connect one end portion of the first to third conductive wires (120, 130, and 140). A base sheet part 110 with a plurality of sensing unit through-holes 111, 111' formed at regular intervals along the longitudinal direction of a rectangular shape, and a conductive material used along the longitudinal direction on the upper surface of the base sheet part 110. A first conductive line 120 installed in a random pattern, and a second conductive line installed parallel to the first conductive line 120 at a certain distance using a conductive material on the upper surface of the base sheet portion 110. A conductive wire 130 and a conductive material are installed on the rear surface of the base sheet 110 along the longitudinal direction, and the base sheet 110 is detected through the sensing unit through-holes 111 and 111'. A third conductive wire 140 installed in a zigzag pattern with a portion drawn out to the upper surface and then retracted to the rear side, and the first conductive wire 120, the second conductive wire 130, and the third conductive wire 140. A leak detection sensor 100 having a terminal resistance unit 150, 150a electrically connecting one end portion to the other end. and
A constant voltage and current are supplied to the leak detection sensor 100, the pre-measured reference resistance value of the first conductive line 120 and the reference resistance value of the second conductive line 130 are stored, and the leakage A control unit 200 that detects changes in the resistance values of the first and second conductive lines 120 and 130 caused by leakage in the detection sensor 100 and calculates the distance to the location of the leakage according to the detected resistance value. A distance measuring device using a leak detection sensor including. According to claim 6,
The control unit 200 stores resistance values measured according to arbitrary positions of the first and second conductive lines 120 and 130, and distance information converted to correspond to the measured resistance values, When leakage is detected through the detection unit through-holes 111 and 111', the resistance R1 between the first conductive line 120 and the third conductive line 140 forming a closed loop, and the second conductive line Characterized by measuring the resistance (R2) between the line 130 and the third conductive line 140 and calculating the distance information by comparing the resistance value calculated by the ratio of R1 and R2 with a pre-stored reference resistance value. A distance measuring device using a leak detection sensor. According to claim 7,
The control unit 200 further includes a display unit 210 that displays the calculated distance information. According to claim 8,
The reference resistance value is a resistance value measured at the location where the detection unit through-holes 111 and 111' are installed in the base sheet part 110. A distance measuring device using a leak detection sensor.

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