Ultrathin capacitive / weight-type tape sensor and detection system thereof

Abstract

To provide an ultrathin capacitive / weight-type system including a capacitive tape sensor configured to be installed on a circular outer periphery of a handle part of an automobile and to measure the detection value (capacitance value in pf) of gripping force when a person grips the handle, a weight-type tape sensor configured to accurately detect contact of an electrode facing the capacitive tape sensor, and an external device configured to detect energization between the electrodes.SOLUTION: An elastic spacer 14 in the form of a strip including bubble is mounted in a gap between a shield cloth electrode S12 and a shield cloth electrode 13E using a shield cloth material made of a conductive fabric capable of blocking and absorbing electromagnetic waves and radio waves, and has outer dimensions several millimeters larger than the detection area of the shield cloth electrodes, is closely covered with a urethane film 15 so as to wrap around the shield cloth electrodes S12, 13E and an opening 19 for lead wires, and is sealed at an outer periphery with a urethane film layer 16, thereby constituting an ultrathin structure that is flexible and not affected by radio interference.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an ultra-thin capacitance-type weight-type tape sensor, and to a capacitance-type weight-type system that includes a capacitance-type tape sensor that is installed on the circular outer periphery of a steering wheel or the like of an automobile and measures the detected value of the grip force (capacitance value pf) when a person grips the steering wheel, a weight-type tape sensor that accurately detects when the opposing electrodes are in contact, and an external device that detects the flow of electricity.

[0002] As a capacitance-type weight sensor in which two electrodes are configured with multiple strip-shaped electrodes and a pair of capacitor electrodes is provided by providing a dielectric sheet and multiple spacers between the electrodes, there are technologies described in Patent Documents 1, 2, and 3. The capacitance-type weight sensor described in Patent Document 1 is a capacitance weight sensor in which a spacer is provided between two upper and lower insulators that make up the electrodes, and the change in weight caused by the contraction of the spacer applied between the capacitor electrodes is detected as a change in capacitance between the capacitor electrodes.

[0003] However, the capacitance weight sensor described in Patent Document 1 has the problem that, because the spacer mounting part does not move, even if an attempt is made to detect a slight change in load, the change in capacitance between the capacitor electrodes is small and the sensor is unable to detect it.

[0004] Furthermore, since the mounting portion of the spacer does not move, there is a problem in that the detected value differs when weight is applied to the periphery of the spacer and when weight is applied to other locations.

[0005] Patent document 2 describes a capacitive weight sensor that is more sensitive than a single capacitor by placing panel electrodes E above and below a panel electrode S, with the panel electrode S in the center and forming two capacitors above and below.

[0006] However, like the technology described in Patent Document 1, the technology described in Patent Document 2 also provides multiple spacers at regular intervals between panel electrode S and panel electrode E. This poses a problem in that the detected value differs when a load is applied to the sensor on the spacers or their surroundings and when the load is applied elsewhere, meaning that the detected value differs depending on the position of the load applied to the sensor.

[0007] In Patent Document 3, either the panel electrode S or the panel electrode E is in a taut state, so that the distance between the panel electrodes S and E near the center is wider than the distance between the panel electrodes S and E near the outer frame spacer, and therefore the weight applied to the sensor mat can be measured almost equally.

[0008] However, the technology described in Patent Document 3 is a sensor mat that can detect and measure the weight of all applied points on the sensor mat almost equally, and although it is possible to detect the same load at the same value and to handle small lots, there are issues with using it as a mass-produced product due to the high costs of assembly labor and productivity, etc. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Patent No. 4069256 [Patent Document 1] Patent No. 6378001 [Patent Document 1] Patent No. 7125741 Summary of the Invention [Problem to be solved by the invention]

[0010] The object of the present invention has been achieved in light of these circumstances, and is to provide an ultra-thin capacitive tape sensor that, due to its simple structural configuration, can accurately and highly precisely detect uniform values ​​regardless of the position of all loads (weights) on the tape sensor, and an ultra-thin weight-type tape sensor that has a structure that combines contact output and capacitive output and has a setting function according to the contact output, so that the ultra-thin capacitive / weight-type tape sensor can respond to the wide range of demands for frequent use and provide a diversified, highly productive, low-cost product.

[0011] The first invention to solve the above problems is an ultra-thin capacitive / weight-type tape sensor characterized by comprising a shield cross electrode S made of a shield cross material, which is made of conductive fabric, and a band-shaped elastic spacer containing air bubbles attached between the shield cross electrode E, and when the elastic spacer is compressed, the outside of the shield cross electrode is tightly wrapped in urethane film to prevent the air bubbles from leaking out of the elastic spacer, and the outer periphery is sealed with a urethane film layer, thereby preventing the air bubbles in the elastic spacer from escaping to the outside, and providing a structure in which the elastic spacer mainly detects the load (weight).

[0012] The second invention to solve the above problems is an ultra-thin capacitive / weight-type tape sensor characterized by a structure that uses an electrode made of shielding cloth material, which has flexibility and a shielding cloth electrode that is completely unaffected by radio wave interference such as electromagnetic waves or noise, and which does not transfer load pressure directly to the elastic spacer, and which has excellent load recovery force due to the composition of the elastic spacer and urethane film layer, and which can detect accurate, uniform values ​​regardless of the load position on the shielding cross electrode, and which is minimally affected by temperature changes.

[0013] The third aspect of the present invention to solve the above problems is an ultra-thin weight-type tape sensor characterized in that a gap of several millimeters is provided in the center of the vertical width of the elastic spacer, and by providing gaps in several places when detecting each heavy load, the ultra-thin weight-type tape sensor is equipped with a function for setting the detection value according to the load.

[0014] The fourth aspect of the present invention, which aims to solve the above problems, is an ultra-thin weight-type tape sensor characterized by having a combined function of converting to a capacitance type by placing a resin plate of the same area on the ultra-thin weight-type tape sensor.

[0014] The fifth aspect of the present invention for solving the above problems is that the ultra-thin capacitive / weight-type tape sensor has a structure in which the shield cross electrode, elastic spacer, and urethane film layer are tightly attached and sealed, and has tensile strength, abrasion resistance, shock absorption, elasticity, and flexibility, so that it can be installed on all objects, including flat, uneven, rectangular, and circular surfaces, without being limited by conditions such as the sensor installation location, and is flexible enough to perform detection on them.

[0015] The sixth aspect of the present invention for solving the above problems is an ultra-thin capacitance-weight type tape sensor, characterized in that the elastic spacer constituting the ultra-thin capacitance-weight type tape sensor is made of high-performance urethane foam or the like, which has excellent properties such as small residual compression strain, dimensional stability, and no wear and tear, and the sensor can be formed to be thin or thick depending on the configuration of width, thickness, density, etc., thereby detecting loads ranging from light to heavy.

[0016] The seventh aspect of the present invention for solving the above problems is an ultra-thin capacitive / weight-type tape sensor having a structure in which a shield cross electrode E facing a shield cross electrode S and an elastic spacer structure attached in the gap between them are tightly wrapped from the outside and the outer periphery is sealed with a urethane film layer, and the ultra-thin capacitive / weight-type detection system can utilize an external device that detects the flow of current between the shield cross electrode S and the shield cross electrode E. [Effects of the Invention]

[0017] According to the present invention, an ultra-thin capacitance type / weight type tape sensor is provided, which is made up of a structure formed of a shield cross electrode E facing a shield cross electrode S, an elastic spacer placed in the gap between the electrodes, and a urethane film layer tightly attached and sealed so as to wrap around the outer periphery of the shield cross electrode, and has the ability to detect the same value accurately at any position on the electrode in response to the same load, and its elasticity and flexibility mean that it can be installed on all detection targets, and it is minimally affected by temperature changes and is completely unaffected by radio wave interference such as electromagnetic waves and noise. The ultra-thin weight-type tape sensor has a gap of several millimeters in width in the center of the elastic spacer, and when detecting each heavy load, gaps are provided in several places, allowing the sensor to set the detection value according to the load, and by placing a resin plate of the same area on the tape sensor, it is also equipped with a combined function of converting to a capacitance type, making it possible to provide ultra-thin capacitance-type / weight-type tape sensors and detection systems that can accurately detect a wide range of loads and meet demands for a variety of uses, as well as provide diversified, highly productive, low-cost products. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a plan view showing the arrangement of shield cross electrodes and the configuration of each component of an ultra-thin capacitive tape sensor according to an embodiment of the present invention. FIG. [Figure 2]This is a cross-sectional view of an ultra-thin capacitive tape sensor according to one embodiment of the present invention, which includes a shield cross electrode, an elastic spacer disposed in the gap, and a urethane film layer sealing the outer periphery. [Figure 3] 1 is a plan view showing the arrangement of shield cross electrodes and the configuration of each component of an ultra-thin weight-type tape sensor according to an embodiment of the present invention. FIG. [Figure 4] 1 is a plan view showing the arrangement of shield cross electrodes of an ultra-thin weight-type tape sensor according to an embodiment of the present invention and the state in which two (plural) gaps are formed in the center of an elastic spacer. [Figure 5] 1 is a cross-sectional view showing a gap between an elastic spacer and a shield cross electrode of an ultra-thin weight-type tape sensor according to an embodiment of the present invention. [Figure 6] 1 is a cross-sectional view showing an embodiment of the present invention in which a resin plate is placed on an ultra-thin weight-type tape sensor to also use a capacitance-type function. [Figure 7] FIG. 1 is a cross-sectional view of an ultra-thin capacitance-type / weight-type tape sensor according to an embodiment of the present invention, installed on a piece of square timber equipment. [Figure 8] FIG. 1 is a cross-sectional view of an ultra-thin capacitance-type / weight-type tape sensor according to an embodiment of the present invention, installed on a circular substrate. [Figure 9] FIG. 10 is a measurement diagram showing load measurement data when an ultra-thin capacitive tape sensor according to one embodiment of the present invention is installed on a square timber. [Figure 10] FIG. 10 is a measurement diagram showing load measurement data when the ultra-thin capacitive tape sensor according to one embodiment of the present invention is installed in a circular shape. [Figure 11] FIG. 10 is a diagram showing the difference in the amount of change between a sealed type and a non-sealed type in an ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 12] FIG. 10 is a measurement diagram showing measurement data values ​​based on grip strength when attached to a handle in an ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 13]FIG. 13 is a measurement diagram showing an enlarged view of the load value of (1) in FIG. 12 in the ultra-thin capacitance-weight tape sensor according to one embodiment of the present invention. [Figure 14] FIG. 13 is a measurement diagram showing an enlarged view of the load value of (2) in FIG. 12 in the ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 15] FIG. 13 is a measurement diagram showing an enlarged view of the load value of (3) in FIG. 12 in the ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 16] FIG. 13 is a measurement diagram showing an enlarged view of the load value of (4) in FIG. 12 in the ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 17] 17 is a table showing the measurement data of FIGS. 12 to 16 in the ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 18] This figure shows measurement data for a 1 kg load with a 0.5 mm thick polycarbonate plate placed on the weight-type and capacitance-type tape sensors in an ultra-thin capacitance-type / weight-type tape sensor, which is one embodiment of the present invention. [Figure 19] This figure shows measurement data for a 1 kg load with a 1 mm thick polycarbonate plate placed on the weight-type and capacitance-type tape sensors in an ultra-thin capacitance-type / weight-type tape sensor, which is one embodiment of the present invention. [Figure 20] This figure shows measurement data for a 1 kg load with a 2 mm thick polycarbonate plate placed on the weight-type and capacitance-type tape sensors in an ultra-thin capacitance-type / weight-type tape sensor, which is one embodiment of the present invention. [Figure 21] This figure shows measurement data for a 1 kg load when a 3 mm thick PVC plate is placed on the weight-type and capacitance-type tape sensors in an ultra-thin capacitance-type / weight-type tape sensor, which is one embodiment of the present invention. [Figure 22] 22 is a table showing the measurement data of FIGS. 18 to 21 in the ultra-thin capacitance-weight tape sensor according to one embodiment of the present invention. [Figure 23]FIG. 10 is a diagram showing measurement data for an 80 kg load in an ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 24] FIG. 10 is a diagram showing measurement data of both hands' load in the ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 25] FIG. 1 is a layout diagram showing the positions of loads to be compared in an ultra-thin capacitive tape sensor according to an embodiment of the present invention. [Figure 26] FIG. 26 is a diagram showing measurement data values ​​of loads of 516 g and 1033 g at each position in FIG. 25 in the ultra-thin capacitive tape sensor according to one embodiment of the present invention. [Figure 27] FIG. 1 is a graph showing measurement data of a 26-hour environmental test for an ultra-thin capacitive tape sensor according to an embodiment of the present invention. [Figure 28] FIG. 28 is a graph showing temperature test measurement data at the same time as the environmental measurement in FIG. 27, using an ultra-thin capacitive tape sensor according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The present invention will be described with reference to the accompanying drawings, but the present invention is not limited to these examples and various modifications are possible without departing from the spirit of the present invention.

[0020] Figure 1 shows a plan view of an ultra-thin capacitive tape sensor 10. It is ultra-thin (0.8 mm thick), has excellent pressure resistance and durability, detects the same value regardless of the position on the sensor, and is flexible enough to be installed on any object regardless of installation conditions. The sensor uses a shielding cloth material made of conductive fabric, and includes shielding cloth electrodes 12S and 13E. An elastic spacer 14 is placed in the gap between the electrodes, and is covered with copper foil tape 17 or copper conductive paste (not shown). Lead wires 18S and 18E are led out from shielding cloth electrodes 12S and 13E through lead wire openings 19. Urethane film 15 is tightly attached around the outer periphery of shielding cloth electrodes 12S and 13E, and urethane film layer 16 seals lead wire openings 19. The led wires are then connected to an external device.

[0021] 1, the shield cross electrodes 12S and 13E (eliminating radio interference), elastic spacer 14 (identifying weight), urethane film 15, and urethane film layer 16 (sealing the air layer) according to one embodiment of the present invention each have their own functions related to the detection of a load based on their respective characteristics. These functions constitute the structure of ultra-thin capacitive tape sensor 10, which detects the same load with the same value, is minimally affected by temperature changes, and, due to its elasticity and flexibility, can be installed on any object regardless of installation conditions, and eliminates radio interference when using shield cross material.

[0022] A specific example of the above-mentioned ultra-thin capacitive tape sensor 10 is as follows. Specifically, copper foil tape 17 or copper conductive paste (not shown) is disposed to connect output lead wires 18 (18S, 18E) to shield cross electrode 12S and shield cross electrode 13E, which are made of the shield cross material shown in Figure 1, 0.2 mm thick and measuring 20 mm long and 280 mm wide. In this example, the shield cross for the electrodes, which performs an important function related to detection, is made of metal foil, metal fiber, conductive powder or fiber such as carbon or nickel, or conductive thread such as silver or copper.

[0023] The elastic spacer 14, measuring 30 mm long, 290 mm wide, and 0.3 mm thick, is placed in the gap between the shield cross electrode 12S and the shield cross electrode 13E and is a structure that is attached between the top and bottom of both electrodes with adhesive tape or the like, and the integrated configuration of the shield cross electrode and the elastic spacer 14 provides excellent compression resistance so that the same load can be detected at the same value, and its elasticity and flexibility allow it to be installed on objects regardless of installation conditions, ensuring the rapid response of the ultra-thin capacitive tape sensor 10. The elastic spacer 14 can be made of a material such as urethane foam with a uniform cell structure, silicone elastomer, natural rubber, acrylic rubber, or urethane rubber.

[0024] The 0.02 mm thick urethane film 15 tightly covers the entire periphery of shield cross electrode 12S and shield cross electrode 13E, and the 3 mm wide urethane film layer 16 on the periphery seals in the air bubbles in the elastic spacer. Even if the air in the air layer is compressed by the pressure of the load, the air bubbles contained therein will not leak from the inside to the outside because the air is sealed in, and the repulsive force can be utilized.

[0025] Figure 2 is a cross-sectional view of Figure 1. In this figure, lead wires 18S and 18E are drawn out from shield cross electrode 12S and shield cross electrode 13E, and elastic spacer 14 is placed in the gap between them. Urethane film 15 is tightly attached to the outer periphery of the shield cross electrode, and urethane film layer 16 seals lead wire opening 19, forming a structure through which the drawn-out lead wires 18 are connected to external equipment.

[0026] 3 is a plan view of the ultra-thin weight-type tape sensor 11. In this figure, elastic spacer 14, measuring 0.3 mm thick, 26 mm long, and 286 mm wide, is placed in the gap between shield cross electrode 12S and shield cross electrode 13E, and has a 3 mm wide gap in the vertical center, and by providing gaps in several places to detect the weight of each load, a structure is formed that has the function of setting the detection value according to the weight of the load.

[0027] FIG. 4 shows an example of gaps in several locations in the basic structure of FIG. 3 for detecting the weight of a load.

[0028] Figure 5 is a cross-sectional view of the ultra-thin weight-type tape sensor 11. Based on the structure of the ultra-thin capacitance-type tape sensor 10, a structure is created that converts the sensor into a contact output function by providing a 3 mm wide gap in the vertical center.

[0029] Figure 6 is a cross-sectional view of an ultra-thin gravitational tape sensor 11. A resin plate of the same area is placed on the gravitational tape sensor to form a structure with a dual function of converting to a capacitance type. Measurement data from the load test for the gravitational and capacitance types are shown in Figures 18 to 21.

[0030] Figures 7 and 9 are cross-sectional views of ultra-thin capacitive / weight-type tape sensors 10 and 11, which are an embodiment of the present invention, installed on a square piece of equipment.The capacitive tape sensors in Figure 9 were installed on three sides of a 50 x 50 mm square piece of timber, with sensor dimensions of 30 mm length x 290 mm width x 0.8 mm thickness (electrode dimensions: 20 x 280 x 0.8 mm).Measurement data showed that the load change for one finger was 55 pf and the load change for two fingers was 84 pf.

[0031] Figures 8 and 10 are cross-sectional views of an ultra-thin capacitive tape sensor 10 according to an embodiment of the present invention, installed on a steering wheel with a circumference of 1,224 mm. Figure 10 shows measurement data for a sensor installed around the circumference of the steering wheel with dimensions of 30 mm length x 290 mm width x 0.8 mm thickness (electrode dimensions: 20 mm x 280 mm x 0.8 mm), with the load change for one finger being 26 pf and the load change for two fingers being 43 pf. The difference from the load change in Figure 9 is due to the load area ratio.

[0032] 11 shows measurement test data comparing the loads of a non-sealed and sealed ultra-thin capacitive tape sensor 10, an embodiment of the present invention. With sensor dimensions of 20mm length x 140mm width x 0.8mm thickness, and a 10kg load, the non-sealed type had a change of 16pf and the sealed type had a change of 20pf, a difference of 1.25 times when sealed.

[0033] Figure 12 shows the measurement data of a load test in four patterns ((1) touch, (2) light grip, (3) slightly firm grip, (4) firm grip) when an ultra-thin capacitive tape sensor 10 according to one embodiment of the present invention is mounted on a handle with sensor dimensions of 30 mm length x 290 mm width x 0.8 mm thickness (electrode dimensions: 20 mm x 280 mm x 0.8 mm).

[0034] 13 to 16 are enlarged views of the load test measurement data shown in FIG. 12, which are diagrams of the measurement data of the change in the load: FIG. 13▲1▼ Touching 32 pf, FIG. 14▲2▼ Lightly gripping 55 pf, FIG. 15▲3▼ Slightly strongly gripping 75 pf, and FIG. 16▲4▼ Strongly gripping 147 pf.

[0035] FIG. 17 is a table showing load measurement data obtained by the four load methods shown in FIGS. 13 to 16 when the sensor is installed on the steering wheel of a vehicle.

[0036] Figures 18 to 21 show an ultra-thin capacitive tape sensor 10 and a weight-type tape sensor 11 (sensor electrode dimensions: 20 x 280 x 0.8 mm) according to one embodiment of the present invention, in which a 1 kg load test was conducted by placing a 0.5 mm to 2 mm thick polycarbonate plate and a 3 mm thick PVC plate on the ultra-thin weight-type tape sensor and the capacitive tape sensor shown in Figure 6. Figure 18 shows the change in resistance when a 0.5mm thick polycarbonate plate is loaded with 1kg, with the weight formula being 15pf and the capacitance formula being 17pf. Figure 19 shows the change in resistance when a 1mm thick polycarbonate plate is loaded with 1kg, with the weight formula being 14pf and the capacitance formula being 17pf. Figure 20 shows the change in resistance when a 2mm thick polycarbonate plate is loaded with 1kg, with the weight formula being 15pf and the capacitance formula being 17pf. The change in resistance is uniform for polycarbonate plates of thicknesses from 0.5mm to 2mm. Figure 21 shows the change in resistance when a 3mm thick PVC plate is loaded with 1kg, with the weight formula being 13pf and the capacitance formula being 16pf.

[0037] Figure 22 is a table listing the load measurement data for Figures 18 to 21, in which a 1 kg load was applied to polycarbonate plates of thickness 0.5 mm to 2 mm placed on the ultra-thin capacitive tape sensor 10 and the weight-type tape sensor 11, and a 1 kg load was applied to PVC plates of thickness 3 mm.

[0038] Figures 23 and 24 show the measurement data from a load-bearing test of an ultra-thin capacitive tape sensor 10, measuring 30 mm long, 290 mm wide, and 0.8 mm thick (electrode dimensions: 20 mm x 280 mm x 0.8 mm), with four 20 kg iron pieces (80 kg) on ​​a 0.8 mm thick piece. The base capacitance was 571 pf, with a change of 824 pf (253 pf), a change rate of 44% of the base capacitance. For an 80 kg load on a 0.8 mm thick piece, the measurement results show excellent load-bearing and load-restoring properties. Figure 24 shows the measurement data from a load test using both hands two hours after the load-bearing test shown in Figure 23. The base capacitance was 571 pf, with a change of 788 pf (217 pf), indicating normal operation.

[0039] Figures 25 and 26 show the same load test data for the ultra-thin capacitive tape sensor 10 as above, and Figure 25 is a diagram of the load positions used to verify the error in measurement values ​​at three positions measuring 30 mm long x 290 mm wide x 0.8 mm thick (electrode dimensions: 20 mm x 280 mm x 0.8 mm). Figure 26 shows the load measurement data at the positions shown in Figure 25, with loads of 516g and 1033g. For the 516g load, the load values ​​from (1) to (3) are 578pf, a change of 7pf. For the 1033g load, the load values ​​from (1) to (3) are 590pf, a change of 19pf.

[0040] For Figures 27 and 28, environmental and temperature tests were conducted on the same device as Figure 25, measuring 30mm long x 290mm wide x 0.8mm thick (electrode dimensions: 20mm x 280mm x 0.8mm). As for Figure 27, environmental tests were conducted for 26 hours to measure external noise and changes in capacitance. The results showed that the capacitance value at the start of the environmental test at 11:11am was (564pf), and the lowest capacitance value was around 4am. (552pf) The final value at 1:05 PM the next day was (559pf), and the change in capacitance was very small (12pf), with no influence from external noise, etc. In Figure 28, measurements were taken during the same time period as the capacitance fluctuations. The temperature test was carried out over the same time period as the environmental test in Figure 27, and temperature measurements were carried out for 26 hours. The temperature started at 17.3°C and reached a minimum of 3.3°C, and ended at 11.5°C, resulting in a capacitance change of 12 pf for a temperature change of 14°C. [Explanation of symbols]

[0041] 10 Capacitive tape sensor 11 Weight-type tape sensor 12 Shield cross electrode S 13 Shield cross electrode E 14 Elastic spacer 15 Urethane film 16 Urethane film layer 17 Copper foil tape 18 Lead wires 18S, 18E 19 Lead wire opening 20 Gap between spacers 21 External equipment 22 Resin Plate

Claims

1. This is an ultra-thin capacitance / weight-type tape sensor, which is an extremely simple structure that detects the weight of a load applied to the detection electrode surface at a uniform value.It is characterized by having a structure that uses a shielding cloth material made of conductive cloth, an elastic spacer attached to the gap between the shielding cloth electrode and the electrode, and the outside of the shielding cloth electrode is tightly adhered and sealed with a urethane film.

2. The shielding cloth electrode S and the shielding cloth electrode E are made of a conductive fabric material capable of shielding, blocking, and absorbing electromagnetic waves and radio waves, and the band-shaped elastic spacer containing air bubbles attached in the gap between them has an outer dimension several mm larger than the detection area of ​​the shielding cloth electrode, This ultra-thin capacitance / weight type tape sensor is characterized by a structure in which a urethane film is tightly attached to the shield cross electrodes S and E and the outside of the lead wire opening so as to wrap around them, and the outer periphery is sealed with a urethane film layer, thereby forming a structure that does not use a dielectric sheet.

3. The structure of the ultra-thin capacitive / weight-type tape sensor using the above-mentioned shielding cloth material is characterized in that the shielding cloth electrode made of conductive cloth is configured to directly transfer the load pressure to the elastic spacer, so that the entire tape sensor has excellent elasticity and flexibility, and the shielding cloth electrode is completely unaffected by radio wave interference such as electromagnetic waves and noise, and the configuration of the elastic spacer and urethane film layer gives it excellent load recovery force, and it is accurate in detecting the same load with the same value regardless of the position on the shielding cross electrode, and is also less affected by temperature changes.

4. The elastic spacer is a component that plays an important role in detecting a load that is the same as the load restoring force at the same value, and in the case of a weight-type tape sensor, a gap of several millimeters wide is provided in the center of the vertical width, and gaps are provided in several places when detecting the weight of each load, and the ultra-thin capacitive / weight-type tape sensor described in claims 1 to 3 is equipped with a function to set the detection value according to the weight of the weight by configuring the band width, thickness, density, etc.

5. An ultra-thin weight-type tape sensor as described in claims 1, 2 and 4, characterized in that it has a combined function of converting to a capacitance type by placing a resin plate of the same area on the ultra-thin weight-type tape sensor.

6. The ultra-thin capacitive / weight-type tape sensor described in any one of claims 1 to 5, characterized in that the structure sealed with the shield cross electrode, elastic spacer, and urethane film layer has tensile strength, abrasion resistance, shock absorption, elasticity, and flexibility, and can be installed on and used to detect all types of objects, including flat, uneven, rectangular, and circular surfaces, without being limited by conditions such as the sensor installation location.

7. The ultra-thin capacitive / weight-type tape sensor described in claims 1 to 6 is characterized in that the elastic spacer is made of a high-performance urethane foam or the like that has excellent properties such as small residual compression strain, dimensional stability, and no settling, and the material of the elastic spacer is made of a material with a uniform cell structure such as urethane, acrylic, urea, nitrile, silicone elastomer, styrene-based thermoplastic elastomer, fluororubber, natural rubber, etc.

8. An ultra-thin capacitance-weight detection system comprising the ultra-thin capacitance-weight tape sensor of any one of claims 1 to 7 and an external device that detects electrical conduction between the shield cross electrode S and the shield cross electrode E.

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