Method for manufacturing capacitive mat sensor for measuring flow-down time of liquid such as paint, capacitive mat sensor for measuring flow-down time of liquid such as paint using the method, and capacitive measuring instrument

Abstract

To provide a capacitive mat sensor for measuring the flow-down time of liquid such as paint and a capacitive measuring instrument that can measure the flow-down time of liquid such as paint on the basis of a flow cup.SOLUTION: A capacitive mat sensor for measuring the flow-down time of liquid such as paint comprises: a structure in which an electric conductor is integrally formed on each first surface of a panel electrode E and a second surface of a panel electrode S of an insulating body formed of elastic material and changed into a nonconductor on an outer periphery with a width of 5 mm, a dielectric sheet is closely adhered to electrode surfaces of the panel electrode S and the panel electrode E by using a double-sided adhesive tape, elastic body corner spacers are arranged at four inside corners and the center on a diagonal line between the panel electrodes S and E being an integrally formed structure, and has an air fluid function in which an air layer between laminations is not tightly sealed; and a shield electrode G on a bottom face of the panel electrode E.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a capacitance type mat sensor system for measuring the flow time of diluted liquids such as paints with a relatively low viscosity, characterized by comprising a capacitance type measuring device that transmits to an external device an electrical signal that accurately measures the flow time of the diluted liquid such as paints with a relatively low viscosity using a flow cup method and a unit that changes by 0.1 pf every 0.1 seconds based on the output of the capacitance type mat sensor in response to slight weighted fluctuations in the flow rate.

[0002] A conventional capacitance-type weight sensor has a pair of capacitor electrodes formed by sandwiching a panel electrode S covered with a dielectric sheet on both sides of the panel electrode S and providing a plurality of strip-shaped spacers on the periphery of a pair of panel electrodes E arranged opposite each other on both sides of the panel electrode S, and providing a dielectric sheet and a plurality of square spacers between the electrodes. Patent Document 1 describes a technology for such a capacitance-type weight sensor. The capacitance weight sensor described in Patent Document 1 is a structure in which a dielectric sheet and spacers are attached between two upper and lower insulators (rigid PVC) that make up the electrodes, and the structure is covered with an exterior cover (insulator). The capacitance-type weight sensor is used in a capacitance-type weight sensor that detects changes in breathing, body movement, etc. by detecting changes in the weight applied to the panel electrodes by the spacers as changes in the capacitance between the panel electrodes.

[0003] However, although the capacitance-type weight sensor described in Patent Document 1 is capable of detecting movements resulting from a person's hyperpnea, hyperventilation, hyperpnea, apnea, etc. and changes in load due to body movement, the flow time of liquids such as paints in the flow cup method of JIS standard K5600-2-2 can be measured with an accuracy of 0.2 seconds, and for materials with a flow time exceeding 100 seconds where the break point is a material, the flow speed slows down, making it difficult to judge and reproduce the flow time. For these reasons, there are currently no capacitance-type weight sensors that can detect the flow time of liquids such as paints. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6378001 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in view of the above circumstances, and the flow time is measured manually by pressing a stopwatch at the same time as removing a finger from the orifice of the flow cup, and stopping the stopwatch at the moment the flow of the test liquid stops. Therefore, the object of the present invention is to provide a capacitance-type mat sensor and capacitance-type measuring instrument for measuring the flow time of a liquid such as paint, which can detect a change in minute flow rate (load) of 0.1 pf every 0.1 seconds with high accuracy and accurate flow time detection by using an integrally formed structure in which a dielectric sheet is attached to the entire surface of the panel electrodes S, E1, and E2 with double-sided adhesive tape, and a structure in which the air layer between the laminated panel electrodes S and E1 and E2 is not sealed, and a structure in which the capacitance change (increase or decrease) is limited only to the square spacer. [Means for solving the problem]

[0006] The invention described in claim 1 is a capacitive mat sensor for measuring the flow time of liquids such as paint, characterized in that the sensor comprises a square resin plate made of an elastic material and covered with an outer cover, the inner 5 mm width of which is made non-conductive by masking or the like, the other sides of which are covered with a conductor, a dielectric sheet is attached to the electrode surface with double-sided adhesive tape, and elastic corner spacers are arranged at four inner corners and one diagonal center between the integrally formed panel electrodes S, panel electrodes E1, and panel electrodes E2 and the panel electrodes E1 and E2 facing the panel electrode S2 surface, a structure in which the air layer between the laminated layers is not sealed, and a shield electrode G is provided on the bottom surface of the panel electrode E.

[0007] The invention described in claim 2 is characterized by comprising the capacitance type weight sensor for measuring the flow time of paint or other liquid described in claim 1, and the measurement of the flow time of paint or other liquid is performed by installing a capacitance type mat sensor for measuring the flow time of paint or other liquid under a flow cup, placing a receiving container on the sensor, pressing a stopwatch at the same time as removing a finger from the orifice of the flow cup, and stopping the stopwatch the moment the paint flow stops.The invention is characterized by comprising a capacitance type measuring device that transmits to an external device an electric signal that accurately detects the weight change (increase or decrease) of the minute outflow amount of paint or other liquid through the flow cup with high precision in units of 0.1 pf change every 0.1 seconds.

[0008] The invention described in claim 3 is a capacitive mat sensor for measuring the flow time of paint or other liquids described in claim 1 or 2, characterized in that each of the resin plates is made of a polycarbonate plate or the like which is impact resistant, weather resistant, antistatic, absorbent, and elastic, and is provided with panel electrode S, panel electrode E1, and panel electrode E2, the inner 5 mm wide perimeter of which is a 100 mm square and is non-conductor, and the other resin surfaces are formed with a conductive paint or the like.

[0009] The invention described in claim 4 is a capacitive mat sensor for measuring the flow time of liquids such as paint as described in any one of claims 1 to 3, characterized in that a dielectric sheet is completely attached to the 5 mm wide non-conductor portions and electrode surfaces of the panel electrodes S, panel electrodes E1, and panel electrodes E2 with double-sided adhesive tape 0.01 mm to 0.03 mm thick, thereby eliminating gaps and air bubbles between the resin plate non-conductor portions, electrode surfaces, and dielectric sheets, thereby forming an integrated structure to prevent capacitance changes that occur between the resin plate non-conductor portions, electrode surfaces, and dielectric sheets that constitute the panel electrodes S, panel electrodes E1, and panel electrodes E2.

[0010] The invention described in claim 5 is a capacitive mat sensor for measuring the flow time of liquids such as paint as described in any one of claims 1 to 4, characterized in that it is provided with a structure that accurately detects small changes in weight that accompany constant changes in the flow rate by using an integrated structure that does not seal the air layer between the corner spacers, and between a pair of panel electrodes E1 and E2 arranged opposite each other on both sides of the panel electrode S, which sandwich the panel electrode S, elastic square corner spacers arranged on the non-conductive parts at the four inner corners and a center corner spacer arranged in one diagonal center position.

[0011] The invention described in claim 6 is a capacitive mat sensor for measuring the flow time of paint or other liquids described in any one of claims 1 to 5, characterized in that, since the flow cup measuring device is made of metal, as a measure to prevent capacitance changes due to external noise, etc., the sensor is provided with a structure that is resistant to noise, etc., by providing a non-conductor with a width of 5 mm on the outer periphery of the panel electrodes S and E, an integrated structure of the panel electrodes and dielectric sheet, and an outer cover that covers the outer periphery of the shield electrode G made of aluminum plate, copper plate, etc. at the bottom of the panel electrode E with a polyester sheet, tarpaulin sheet, soft polyvinyl chloride sheet, etc. Effect of the Invention

[0012] The flow time of a paint or other liquid is measured by pressing a stopwatch at the same time as removing a finger from the orifice of the flow cup, and measuring the time between when the stopwatch stops and when the flow of the test liquid stops. The present invention provides a capacitance-type mat sensor system for measuring the flow time of a paint or other liquid, which can measure the flow time of a paint or other liquid with high precision using a flow cup with a capacitance-type measuring instrument that transmits to an external device an electrical signal that accurately detects with high precision the load fluctuation of a minute outflow amount in units of 0.1 pf or more every 0.1 seconds, and has a sensitivity that uniformly compresses and deforms even at minute flow rates, a rapid recovery force after the load is released, and a load fluctuation of a minute outflow amount in units of 0.1 pf or more every 0.1 seconds. [Brief description of the drawings]

[0013] [Figure 1] 1 is a plan view of a capacitive mat sensor 10 for measuring the flow time of a liquid such as paint according to one embodiment of the present invention, and shows the state of its constituent parts. [Diagram 2] 1 is a cross-sectional view of a capacitive mat sensor 10 for measuring the flow time of a liquid such as paint, which is an embodiment of the present invention. [Diagram 3] 1 is a diagram showing the structure of a member in which each electrode portion and a dielectric sheet of a capacitive mat sensor 10 for measuring the flow time of a liquid such as paint, which is one embodiment of the present invention, are adhered together with a double-sided adhesive sheet. [Figure 4] This is a graph of measurement data for a paint viscosity of 47, for which the flow time was measured, with a start determination threshold command of 05 (0.5 pf) and an end determination threshold command of 04, set for a measurement time of 65.2 seconds, in accordance with one embodiment of the present invention. [Diagram 5] FIG. 1 is a graph showing measurement data of a capacitance change of 81.6 pf and a flow measurement time of 65.2 seconds according to one embodiment of the present invention. [Figure 6] In one embodiment of the present invention, the start determination threshold command 05 (0.5 pf) was set from the measurement start value of 326.8 pf, which measured the flow time, to set the injection start value of 327.3 pf, which is an increase of 0.5 pf from the start of measurement, and the end determination threshold command 04 determined the injection stop value of 408.9 pf, and these are the measurement data values ​​for which a stop determination was made due to four or more identical values ​​of 409 pf. [Figure 7] This is a graph of measurement data for a paint viscosity of 100, for which the flow time was measured, and the measurement time set by the end determination threshold command 08 was 108.2 seconds, according to one embodiment of the present invention. [Figure 8] FIG. 1 is a graph showing measurement data of a capacitance change of 93.8 pf and a flow measurement time of 108.2 seconds according to one embodiment of the present invention. [Figure 9]In one embodiment of the present invention, the start determination threshold command 05 (0.5 pf) is set from the measurement start value of 312.5 pf, which is used to measure the flow time, and the end determination threshold command 08 determines the injection start value of 313 pf, which is an increase of 0.5 pf from the start of measurement, and the injection stop value of 406.8 pf, which is the same value of 406.9 pf, and these are the measurement data values ​​for which a stop determination was made due to eight or more values. [Figure 10] This is a graph of measurement data for a paint viscosity of 100, for which the flow time was measured, and the measurement time set by the end determination threshold command 08 was 109.5 seconds, according to one embodiment of the present invention. [Figure 11] FIG. 13 is a graph showing measurement data of data measured at a flow rate of 151.7 pf and a flow measurement time of 109.5 seconds according to one embodiment of the present invention. [Figure 12] In one embodiment of the present invention, the start determination threshold command 05 (0.5 pf) is set from the measurement start value of 266 pf, which is used to measure the flow time, and the end determination threshold command 08 determines the injection start value of 266.5 pf, which is an increase of 0.5 pf from the start of measurement, and the injection stop value of 418.1 pf, which is the same value of 418.2 pf, is the measurement data value for which a stop determination was made due to eight or more values. [Figure 13] FIG. 13 is a graph showing the measurement data of a paint viscosity measured for the flow time according to one embodiment of the present invention, the measurement time being 111.9 seconds set by the constant threshold command 06. [Figure 14] FIG. 13 is a graph showing measurement data of data measured at a flow rate of 71.4 pf and a flow measurement time of 111.9 seconds according to one embodiment of the present invention. [Figure 15] In one embodiment of the present invention, the injection start value of 314.2 pf and the injection stop value of 385.6 pf were determined by the end determination threshold command 06, and these are the measurement data values ​​that indicated a stop determination due to six or more identical values ​​of 385.7 pf. [Figure 16] This is a graph of measurement data verifying the difference in measurement time between the capacitance-type mat sensor value for measuring the flow time of paint, etc. and the stopwatch value in the measurement of flow time, which is one embodiment of the present invention. The flow time measured by the mat sensor was 111.9 seconds, while the stopwatch measurement was 112.41 seconds, with an error of 0.51 seconds. [Figure 17] FIG. 2 is a cross-sectional view of a flow cup used in one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] An embodiment of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. FIG. 1 is a plan view of a capacitive mat sensor 10 for measuring the flow time of a liquid such as paint according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the same. FIG. 3 is a cross-sectional view of a panel electrode 13S, a panel electrode 13E1, and a panel electrode 13E2, which are integrally formed by completely adhering a dielectric sheet to the electrode surfaces of the panel electrodes 13S, 13E1, and 13E2 with double-sided adhesive tape. The capacitive mat sensor 10 for measuring the flow time of a liquid such as paint includes corner spacers 16 and 17 that are attached between the panel electrode 13E1 (upper side) and the panel electrode 13E2 (lower side) and a shield electrode G18 on the bottom surface of the panel electrode 13E2, and is composed of an outer cover 11 that covers these.

[0015] In FIG. 2, panel electrode 13S is sandwiched, and dielectric sheet 14 is completely adhered to the respective electrode surfaces of panel electrode 13S and panel electrodes 13E1 and E2 with double-sided adhesive tape 21. Lead wires 19S, 19E, and 19G drawn from lead wire connection portions 20 of panel electrode 13S, panel electrode E1, and panel electrode E2 of the integrally formed structure are connected to an external device (not shown).

[0016] Figure 3 shows a lamination diagram of a structure in which panel electrode S, panel electrode E1, and panel electrode E2 have dielectric sheets attached to their respective electrode surfaces with double-sided adhesive tape 21, and in which panel electrode 13 and dielectric sheet 14 are integrally formed. Elastic corner spacers are placed between panel electrodes S and E at the four interior corners and in the diagonal center, forming a structure in which the air layer between the laminated layers is not sealed and has a function of air flow. In this structure, the corner spacers allow the selection of sensitivity (high or low) depending on the length of one side, and a structure has been constructed in which slight fluctuations in weight of a flowing liquid such as paint can be accurately measured by the arrangement and area ratio of the corner spacers, and the change in capacitance due to weight is the only change in capacitance due to weight.

[0020] FIG. 4 is a graph showing the flow time of a paint with a viscosity of 47 measured using a flow cup. This is a data chart showing the flow time measured with the start command 05 (0.5 pf) and the end command 04 (0.4 seconds) set based on the set thresholds of the start determination threshold command 01 to 10 (0.1 pf to 1.0 pf) and the end determination threshold command 01 to 10 (0.1 seconds to 1.0 seconds). The measurement time is every 0.1 seconds (100 ms), and the capacitance measurement start value (326.8 pf) when the measurement start button is pressed is 0.5 pf increase from the start value, which is the flow time measurement start value (injection start) of 327.3 pf. With the setting value of end command 04, when four or more identical capacitance values ​​are measured in 0.4 seconds, the previous measurement end value (injection stop) of 408.9 pf is reached, and by pressing the end button, the measurement time of 65.2 seconds is displayed on the display and sent to the external device.

[0021] Figure 5 shows the measurement data for the flow time measured every 0.1 seconds (100 ms) in Figure 4, and is a graph of the measurement data for the portion of the flow time that was determined (65.2 seconds) from the start of injection (327.3 pf) to the end of injection (408.9 pf, "change of 81.6 pf").

[0022] Figure 6 shows the measurement data values ​​over a measurement time (measurements every 0.1 seconds (100 ms)) for paint with viscosity 47 shown in Figure 4, from the start of measurement of 326.8 pf to the injection start value of 327.3 pf, an increase of 0.5 (0.5 pf) with a start command, to the injection stop value of 408.9 pf with an end command of 04 (0.4 pf), a change of 81.6 pf over a measurement time of 65.2 seconds.

[0023] FIG. 7 is a graph showing the flow time of a paint with a viscosity of 100 measured using a flow cup. This is a data chart showing the flow time measured with the set criteria of start command 05 (0.5 pf) and end command 08 (0.8 seconds) based on the set thresholds of start command 01 to 10 (0.1 pf to 1.0 pf) and end command 01 to 10 (0.1 seconds to 1.0 seconds). The measurement time is every 0.1 seconds (100 ms), the capacitance measurement start value (312.5 pf) when the measurement start button is pressed, and the point at which the value increases by 0.5 pf from the start value is the measurement start value (injection start) of 313 pf for the flow time. With the setting value of end command 08, when 8 or more identical capacitance values ​​are measured in 0.8 seconds, the previous measurement end value (injection stop) of 406.8 pf is reached, and by pressing the end button, the measurement time of 108.2 seconds is displayed on the display and sent to the external device.

[0024] Figure 8 shows the measurement data for the flow time measured every 0.1 seconds (100 ms) in Figure 7, and is a graph of the measurement data for the portion of the flow time that was determined (108.2 seconds) from the start of injection (313 pf) to the end of injection (406.8 pf, "change of 93.8 pf").

[0025] Figure 9 shows the data values ​​during measurement of the start and end commands over a measurement time of 108.2 seconds for the paint with a viscosity of 100 shown in Figure 8 (measurements every 0.1 seconds (100 ms)), from the start of measurement at 312.5 pf with start command 05 (0.5 pf) to the injection start of 313 pf with the increased value at end command 08 (0.8 pf) to the injection stop value of 406.8 pf, with the amount of change being 93.8 pf.

[0026] FIG. 10 is a data diagram showing the flow time measured with the set criteria of start command 05 (0.5 pf) and end command 08 (0.8 seconds) based on the set thresholds of start command 01 to 10 (0.1 pf to 1.0 pf) and end command 01 to 10 (0.1 seconds to 1.0 seconds). The measurement time is every 0.1 seconds (100 ms), and the capacitance measurement start value (266 pf) when the measurement start button is pressed is the point at which the value increases by 0.5 pf from the start value, which is the injection start value of the flow time, 266.5 pf. With the setting value of end command 08, when 8 or more identical capacitance values ​​are measured in 0.8 seconds, the previous value of 418.2 pf is measured, and after the measurement end value (injection stop) of 418.1 pf, pressing the end button causes the measurement time of 109.5 seconds to be displayed on the display and sent to the external device.

[0027] Figure 11 shows the measurement data for the flow time measured every 0.1 seconds (100 ms) in Figure 10, and is a graph of the measurement data for the determined flow time (109.5 seconds) from the start of injection (266.5 pf) to the end of injection (418.1 pf, change of 151.7 pf).

[0028] Figure 12 shows the data values ​​when measuring the start and end commands over a measurement time of 109.5 seconds (measurements every 0.1 seconds (100 ms)) for paint with a viscosity of 100 shown in Figure 11, from the start of measurement at 266 pf, with start command 05 (0.5 pf) increasing from the start of injection at 266.5 pf to the end command 08 (0.8 pf) to the injection stop value of 418.1 pf, the amount of change being 151.7 pf.

[0029] 13 to 16 are graphs of measurement data verifying the difference in measurement time between the measurement time of a capacitive mat sensor for measuring the flow time of a liquid such as paint and the measurement time of a stopwatch. Figure 13 is a graph showing the flow time of paint with viscosity I measured using a flow cup, and is a data graph showing the flow time measured with the setting criteria of start command 05 (0.5 pf) and end command 06 (0.6 seconds). The measurement time is every 0.1 seconds (100 ms), the injection start value is 314.2 pf, and the end command is set to 06. When six or more identical capacitance values ​​are measured in 0.6 seconds, the previous value is 418.2 pf and the measurement end value (injection stopped) is 385.6 pf. By pressing the end button, the measurement time of 111.9 seconds is shown on the display and sent to the external device.

[0027] Figure 14 shows the measurement data for the flow time measured every 0.1 seconds (100 ms) in Figure 13, and is a graph of the measurement data for the determined flow time (111.9 seconds) from the start of injection (314.2 pf) to the end of injection (385.6 pf, change of 71.4 pf).

[0028] Figure 15 shows the data values ​​during measurement of the start and end commands over a measurement time of 111.9 seconds (measurements every 0.1 seconds (100 ms)) for the paint with viscosity 100 shown in Figure 14, from the start of injection 314.2 pf to the injection stop value of 385.6 pf with end command 06 (0.6 pf), the amount of change being 71.4 pf.

[0029] Figure 16 is a photograph comparing the flow time measured by the mat sensor and the stopwatch. The mat sensor display showed a value of 111.9 seconds, while the stopwatch showed a value of 0.01:52. 41 (112.41 seconds) with an error of 0.51 seconds.

[0030] FIG. 17 is a cross-sectional view of the flow cup used in measuring the flow time.

[0030] (Verification experiment) The capacitance type mat sensor for measuring the flow time of paint or other liquids is designed to measure the flow time from the start of the flow of paint or other liquids to the end of the flow from the flow cup shown in the cross-sectional view of Figure 17. The purpose of the capacitance type mat sensor and capacitance type measuring instrument is to accurately detect a change of 0.1 pf every 0.1 seconds (100 ms). The sensitivity of the capacitance type mat sensor is basically an ultra-sensitive structure, and as shown in Figure 3, each panel electrode S, E1, E2 is an integral structure with the dielectric sheet 14, and the air layer between the laminated panels 13S and 13E is not sealed, so it is a structure that does not receive air resistance due to weight. Therefore, the performance of the capacitance type mat sensor for measuring the flow time of paint or other liquids, in which only the corner spacer is formed to have a function of having a change in capacitance due to weight, was verified. In the verification of the flow time of paint and other liquids using a flow cup measuring device, in Figures 4 to 6, the measurement time for Acroze Clay 47 was 65.2 seconds with the start judgment threshold command set to 0.5 and the end judgment threshold command set to 04. In Figures 7 to 9, the measurement time for V-Flon Clay 100 was 108.2 seconds with the start judgment threshold command set to 0.5 and the end judgment threshold command set to 10, the difference being 1.66 times. 13 to 16 are graphs showing measurement data verifying the difference in measurement time between a measurement time of a capacitive mat sensor for measuring the flow time of a liquid such as paint and a measurement time of a stopwatch. In Figure 13, the viscosity of the Acroze paint was higher than 47 due to the long storage time, so the normal viscosity value is unknown. The data shows the flow time measured with the setting criteria of start command 05 (0.5 pf) and end command 06 (0.6 seconds). The measurement time was every 0.1 seconds (100 ms), the injection start value was 314.2 pf, and the setting value of end command 06. When six or more identical capacitance values ​​were measured in 0.6 seconds, the previous value was 385.7 pf and the measurement end value (flow stop) was 385.6 pf. For Figures 4 to 6 and Figures 7 to 9, the measurement time difference with the stopwatch was almost the same, but since there was no stopwatch record, the flow time of Figures 13 to 16 was verified again. As shown in Figure 16, the flow time of the mat sensor was 111.9 seconds, while the flow time of the stopwatch was 1.52 .41 It was verified that the time difference was 0.51 seconds (112.41 seconds).

[0031] (Comparative experiment) The surface area ratio of the square spacer is approximately 15.8 mm. 2 and 13mm 2 This study examines the difference in flow time due to differences in sensor sensitivity. In this comparative experiment, as shown in Figures 7 to 9 and Figures 10 to 12, the paint had a viscosity of 100, and the same measurement conditions were used with a start judgment threshold command of 0.5 and an end judgment threshold command of 08. The change in Figure 8 was 93.8 pf, and in Figure 11 it was 151.7 pf, with a difference of 57.9 pf / 1.61 times the change in the amount of change. In Figure 8, the measurement start value was 312.5 pf, the injection start value (start of measurement) was 313 pf, and the injection stop value (stop of measurement) was 406.8 pf, with a change of 93.8 pf and a measurement time of 108.2 seconds. In Figure 11, the measurement start value is 266 pf, the injection start value (measurement start) is 266.5 pf, the injection stop value (measurement stop) is 418.1 pf, the change is 151.7 pf, and the measurement time is 109.5 seconds. In comparison, the change in Figure 8 is 93.8 pf, and the change in Figure 11 is 151.7 pf, which is 1.61 times, while the difference in flow time is 1.3 seconds. [Explanation of symbols]

[0032] 10. Capacitive mat sensor for measuring the flow time of paint and other liquids 11 Outer cover (insulator) 12 Insulators 13 13S, 13E1, 13E2, Panel electrode 14 Dielectric sheet 15 15S 15E Electrode section 16 Inner angle spacer 17 Center angle spacer 18 Shield electrode G 19 Lead wires 19S, 19E, 19G, 20 Lead wire connection 21 Double-sided adhesive tape layer 22 Air Layer 23 Non-conductors

Claims

1. A capacitive mat sensor for measuring the flow time of liquids such as paint, comprising: a panel electrode S2 surface and each surface of a panel electrode E, the outer periphery of which is a square resin plate made of an elastic material and covered with an outer skin cover, the outer periphery of which is a non-conductor with a width of 5 mm; a dielectric sheet is adhered to the entire surfaces of the panel electrode S, panel electrodes E1, and panel electrodes E2 with double-sided adhesive tape; elastic corner spacers are disposed at the four interior corners and in the center of the diagonal between the panel electrodes S, panel electrodes E1, and panel electrodes E2 of the integrally formed structure; a structure having a fluidity function in which the air layer between the laminated layers is not sealed; and a shield electrode G is disposed on the bottom surface of the panel electrode E.

2. A capacitance-type mat sensor for measuring the flow time of paint or other liquids, comprising: a capacitance-type weight sensor for measuring the flow time of paint or other liquids as described in claim 1; and a capacitance-type measuring device (circuit) that transmits an electrical signal to an external device to detect the flow time of the paint or other liquid with high precision and accuracy, in units of 0.1 pf change every 0.1 seconds, based on the weighted fluctuation of the minute amount of paint or other liquid flowing out of the flow cup.

3. The electrostatic capacitance type mat sensor for measuring the flow time of liquids such as paint, as described in claim 1, characterized in that the resin plates of the panel electrode S and the panel electrodes E1 and E2 are made of polycarbonate plates or the like which are impact resistant, weather resistant, antistatic, absorbent and elastic, the inside circumference of the square is made of a non-conductor with a width of 5 mm, and the conductor on the electrode surface is covered with conductive printing, conductive paint or the like.

4. A capacitive mat sensor for measuring the flow time of liquids such as paint, as described in any one of claims 1 to 3, characterized in that a dielectric sheet is formed as a completely adherent integrated structure using double-sided adhesive tape over the entire electrode surface of each of the panel electrode S and the panel electrodes E1 and E2.

5. A capacitive mat sensor for measuring the flow time of liquids such as paint, as described in any one of claims 1 to 4, characterized in that a pair of panel electrodes E1 and E2 arranged opposite each other on both sides of the panel electrode S are provided with elastic square corner spacers arranged at four interior corners and a center corner spacer arranged at one diagonal center, and a structure in which the air layer between the corner spacers is not sealed.

6. 2. A capacitive mat sensor for measuring the flow time of liquids such as paint, as described in claim 1, characterized in that it comprises a shield electrode G having an aluminum plate, copper plate, or the like at the bottom of the panel electrode E, and a structure in which the outer periphery of the panel electrode is an integral structure of a non-conductor and a dielectric sheet or a non-sealed type with an air layer 5 mm wide, and the outer periphery is covered with a polyester sheet, tarpaulin sheet, soft polyvinyl chloride sheet, or the like as an outer cover (insulator).

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