JP3489799B2 - Destruction detector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a destruction detector for detecting destruction of a wall surface or the like.

[0002]

2. Description of the Related Art In recent years, in crime prevention systems, as a means for preventing a wall or the like from being destroyed and intruding indoors,
There is a device in which a destruction detector is embedded in a wall or the like, and an alarm is issued by detecting the destruction by an intruder. In this case, it is desired that the breaking operation can be detected at an early stage, and that it cannot be easily broken.

FIG. 12 is a schematic view of a conventional destruction sensor. FIG. 12A is a partial plan view.
2 (B) is a partial sectional view thereof. FIG. 12 (A),
The destruction sensor 11 shown in FIG. 3B has a two-layer structure in which the sensing member 12 is attached to the base member 13 and has a hole 14
Are appropriately arranged and formed in a lattice shape.

The sensing member 12 is formed of a conductive fiber bundle having a predetermined electric resistance value, such as carbon fiber, which has a small breaking elongation, and the base member 13 is formed of an insulating fiber bundle, such as a glass fiber, having a large breaking elongation. Things
It is made of CFGFRP (carbon fiber / glass fiber reinforced plastic) as a whole. Then, although not shown, a lead wire is attached to the sensing member 12.

The destructive sensor 11 as described above is embedded in a wall surface, a ceiling, a floor surface or the like which is a structural material of a building, and is used as a sensing member 1.
The lead wire extending from 2 is connected to a breakage detection unit (not shown). Here, FIG. 13 shows an explanatory view of a state in which the destruction sensor is loaded. As shown in FIG. 13 (A), when a load is applied from the base member 13 side, the base member 13 side becomes the compression side and the sensing member 12 side becomes the pulling side and is deformed,
The base member 13 has a large elongation at break and the sensing member 1
Since No. 2 has a small breaking elongation, the sensing member 12 breaks when a predetermined load is exceeded.

The sensing member 12 is a conductor as described above, and its resistance value is monitored by a breakage detection unit (not shown). When the sensing member 12 breaks, the resistance value increases and the breakage occurs. It is something that is perceived. By the way, as a method for storing goods, stored goods, and the like, there are cases where the goods are covered with a net and wires are tied to the goods. When using a net, there is a device that is fixed with an anchor or the like, and when using a wire, an alarm is issued when cutting or disconnecting the wire.

[0007]

However, when trying to prevent an intrusion or a damage accident by using the destruction sensor 11, the destruction sensor 11 is not always loaded from the base member 13 side. However, as shown in FIG. 13B, the load may be applied from the sensing member 12 side, and the destruction sensor 1
Even if 1 is largely deformed, the sensing member 12 becomes the compression side and is not broken unless the breakage progresses by a considerable amount, so that there is a problem that the abnormality cannot be detected early.

Further, in the structure of the destructive sensor 11, if the destructive sensing performance is emphasized and the sensing member 12 is easily broken, the destructive protection and the material reinforcement performance are deteriorated. However, there is a contradictory problem that it becomes difficult to break and the breakage sensing performance deteriorates. This is a problem that occurs not only in the wall surface of a building but also in a fence.

Further, when storing goods etc., there is no means for notifying the outside in the above net, and the wire is easily cut or pulled out, and an abnormality is immediately notified.
There is a problem that it is difficult to prevent theft because the time from the notification to the removal of the product etc. is short.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a destruction detector for early detection of abnormality and improvement of destruction resistance.

[0011]

In order to solve the above problems, according to the invention of claim 1, a base member made of an insulating material containing an insulating fiber bundle and a sensing member made of a conductive material containing a conductive fiber bundle are provided. Has a multi-layered sensing part that is laminated in multiple layers, and the sensing member further forms a predetermined number of knots.
It is composed of fiber bundles, and abnormality is detected by a change in resistance value due to deformation of the sensing member. As a result, it is possible to detect an abnormality early regardless of the direction of the load, and it is possible to improve the fracture resistance by using a multilayer structure. Also small
Even if a load of small deformation is applied, stress is concentrated on the knot and the abnormal
It is possible to improve the period detection performance.

According to the invention of claim 2 or 3, the multi-layer sensing section is provided.
Is provided by intersecting the line-shaped insulating member on the plate member.
Or provided on the side of the grid-shaped insulating member. this
Further improves the early detection performance of anomalies and destruction resistance.
It becomes possible.

According to the invention of claim 4 , the insulating member is formed in a fence shape, and the multilayer sensing portion is provided on a predetermined side. The fence-shaped insulating member has a predetermined number of shining parts, and a sensing member or a multi-layered sensing part is provided between the shining parts, or the lower part of the insulating member is underground with the multi-layered sensing part. Buried. As a result, it becomes possible to improve the fracture resistance and prevent the invasion of the fence by overcoming or excavating.

According to a fifth aspect of the present invention, the base member and the sensing member are twisted to form a string-shaped sensing portion, and the string-shaped sensing portion is formed in a net shape. As a result, the sensing member is ruptured before the rupture of the base member, which enables early detection of an abnormality and extension of the theft time.

[0015]

FIG. 1 is a block diagram of the first embodiment of the present invention.
You FIG. 1A is a partial cross-sectional view of the destruction sensor of the present invention.
1B is a schematic plan view of the whole. Figure 1
Destruction sensor 21 shown in (A) and (B)_AIs, for example, three
Base member 22 ₁~ 22₃And two sensing members 23₁，
23₂(First sensing member 23₁And the second sensing member 23
₂And) are alternately laminated in a multi-layer to detect the multi-layer sensing unit 24.
_AIs formed. This multilayer sensor 24_AIs shown in FIG.
The holes 25 are formed at a predetermined interval as shown in Fig.
It is formed like a child.

The base members 22 _{1 to} 22 ₃ are made of, for example, insulating GF in which glass fiber bundles are hardened with reinforced plastic.
RP (Glass fiber reinforced plastic, hereinafter "GFRP"
Note)). In addition, the first and second sensing members 23 ₁ and 23 ₂ are made of conductive C in which conductive fiber bundles of CF (carbon fiber) are hardened with reinforced plastic, for example.
It is made of FRP (carbon fiber reinforced plastic). The base members 22 _{1 to} 22 ₃ and the first and second sensing members 23 ₁ and 23 ₂ are attached and fixed by, for example, an adhesive material. In this case, the breaking elongation of the base members 22 _{1 to} 22 ₃ is large, and in comparison with this, the first and second sensing members 2
The breaking elongation of 3 ₁ , 23 ₂ is small.

The destruction detector 21 _A as described above is embedded in the wall surface, ceiling, floor surface, fence, etc. of the building. In this case, the first sensing unit 23 ₁ and the second sensing unit 23 ₂ are electrically connected in series by the lead wire, and the lead wire is extended from the end and connected to the resistance detecting unit described later. .

Here, FIG. 2 shows an explanatory view of the destruction detection of FIG. FIG. 2A is a graph of electric resistance values with respect to load and displacement of the multi-layer sensing unit 24 _A , and FIG. 2B is a block diagram for detecting damage. In FIG. 2A, when the destruction sensor 21 _A is loaded in the direction of arrow X in FIG.
The base member 22 ₃ on the load side is compressed and displaced, and the second sensing member 23 ₂ , the base member 22 ₂ , the first sensing member 23 ₁ ,
The elongation displacement increases in the order of the base member 22 ₁ . Therefore, the first and second sensing units 23 ₁ , 23 for the load are
_With a displacement (elongation) of ₂ , the resistance value gradually rises to approximately 80 mm.
The first sensing member 23 ₁ breaks at the displacement position A of 1, and the resistance value detected at this time increases all at once.

As the displacement progresses further, the displacement position B (about 100
mm) for the second sensing member 23₂Breaks and the displacement progresses
Base member 22 at the final displacement position C (about 140 mm)₁~
22 ₃Is destroyed. The final breaking load at this time is
It is about 1.7 tf. That is, the first sensing member 23₁Breaks
Even if an alarm is issued in the disconnected state, the base member 22 ₁
~ 22₃Is not destroyed. In addition, as shown in FIG.
If a load is applied from the Y direction to the
Material 23₂Is broken, which is the reverse of the case shown in Fig. 2 (A).
become.

Further, in FIG. 2B, the first conductor
The second sensing members 23 ₁ and 23 ₂ are connected in series, and both ends thereof are connected to the resistance detection unit 31. The resistance detection unit 31 detects the resistance value detected by the first and second sensing members 23 ₁ and 23 ₂ as shown in FIG. 2A, and the detected resistance value is sent to the monitoring unit 32. . Monitoring unit 32
Monitors the input resistance value by comparing it with a predetermined threshold value, and when the resistance value exceeds the threshold value, the first
Alternatively, it is determined that the second sensing members 23 ₁ and 23 ₂ are broken. At this time, the alarm unit 33 and the display unit 44
A control signal is sent to the device for alarm and display.

In this way, the first or second sensing members 23 ₁ and 23 ₂ are fractured and sensed before the base members 22 _{1 to} 22 ₃ are fractured regardless of the direction of the load. The multi-layered structure can improve the early detection performance of abnormalities and the fracture resistance.

In the abnormal state, even if the wall surface is completely destroyed, the destruction sensor 21 _A (multilayer sensing section 24 _A ) is not destroyed and the wall surface can be reinforced sufficiently.
Then, it takes a considerable amount of time to destroy it so that an intruder can pass through it, abandon the crime after the abnormality is detected, and guards and police officers can arrive before entering the building. Is.

Next, FIG. 3 shows the configuration of the second embodiment of the present invention.
The figure is shown. FIG. 3A is a partial cross-sectional view of the destruction sensor.
3B is a schematic view of one sensing member. Figure 3
(A) is the destruction detector 21_AMulti-layer sensing unit 24_A
Is the same base member 22 as above. ₁~ 22₃And the first and
Second sensing member 23_1a, 23_2aAnd were stacked alternately
Of.

In this case, as described above, the first and second sensing members 23 _1a and 23 _2a are formed of a bundle of CF conductive fibers 23a, and as shown in FIG. Two
A predetermined number of one-sided knotting portions 23b are formed on the 3a to form a bundle. The number of knots 23b may be one,
A plurality may be provided at appropriate intervals.

As a result, the tensile stress concentrates on the knot 23b in the initial state of small deformation or load breakage, and the first and second sensing members 23 _1a and 23 _2a can be easily broken, resulting in an abnormal condition. The early sensing performance can be improved. Further, FIG. 4 shows a configuration diagram of a third embodiment of the present invention. 4A is a schematic plan view of the destruction sensor 21 _B , and FIG. 4B is a cross-sectional view taken along the line AA of FIG. 4A. The destruction sensor 21 _B shown in FIGS. 4A and 4B is, for example, A
The plate member 41 of LC (foam concrete) may be, for example, GF
A linear insulating member 42 formed of RP is arranged in a grid-like line shape and fixed by a screw 43 at its intersection.

Then, the multi-layer sensing parts 24 _B are arranged in a continuous zigzag line shape so as to intersect on a predetermined side of the insulating member 24 _B arranged in a grid-like line shape, and fixed by an adhesive or the like. To do. Multilayer sensing unit 24 _B, as shown in FIG. 4
As shown in (B), the first and second sensing members 23
The base member 22 ₁ is laminated between ₁ and 23 ₂ . In this case, the first and second sensing members 2
3 ₁ and 23 ₂ are electrically connected in series as in the first embodiment.

Therefore, FIG. 5 shows a graph of an example of the resistance characteristic with respect to the load shown in FIG. As shown in FIG. 5, about 140 kg for the final breaking load of about 155 kg (displacement of about 45 mm).
At a position of kg (displacement of about 10 mm), the second sensing member 23 ₂ (load from the insulating member 41 side) is initially fractured and the electric resistance value is increased. By doing so, an abnormality is detected.

When the insulating member 41 is an ALC plate, the breaking load is about 70 kg, and the breaking load is doubled by attaching the multilayer sensing portion 24 _B as compared with the case where the ALC plate is provided alone. It is reinforced above. By using such a destruction sensor 21 _B alone as a wall surface or by embedding it in a wall surface or the like, the first or second sensing member 23 ₁ , 23 ₂ can be easily formed when the wall surface or the like is destroyed. After that, the abnormality can be detected at an early stage, and thereafter, the fracture resistance can be improved by the base member 22 ₁ .

Next, FIG. 6 shows a block diagram of a fourth embodiment of the present invention. FIG. 6 (A) is an overall schematic plan view, and FIG. 4 (B).
FIG. 4B is a sectional view taken along line BB in FIG. FIG. 6 (A),
The destruction sensor 21c shown in (B) has a plate-shaped insulating member 51 made of GFRP formed in a grid line shape. For example, the grid spacing is 100 mm and the overall size is 1000
X 705 mm.

Here, the insulating member 51 has a predetermined grid shape.
Sense on every other grid side (for example, 280 mm interval) on the side of
Chibe 24_B1Is formed in a zigzag shape and has a multi-layered feel
Chibe 24_B2Is provided on the horizontal straight line in the drawing.
It Multilayer sensing unit 24_B1, 24 _B2Is the same as in FIG.
The base member 22₁First and second sensing with interposition of
Member 23₁, 23₂Are laminated (FIG. 6B).
reference).

In this case, both ends of the multilayer sensing parts 24 _B1 and 24 _B2 are arranged so as to be located on both sides of the destruction sensing part 21c. That is, the destruction sensing unit 21c shown in FIG.
Is a single unit and can be set in a continuous state. Therefore, FIG. 7 shows a plan view of the continuous arrangement state of FIG. As shown in FIG. 7, the destruction detector 21c is one unit, and a plurality of the detectors are arranged in a row in the lateral direction. Each unit 21c has both ends of the multi-layer detectors 24 _B1 and 24 _B2 arranged on both sides. Are connected.

As a result, the units 21c can be connected to each other without providing extra wiring, and the mass productivity can be improved and the labor for connection can be saved. Here, FIG. 8 and FIG. 9 show configuration diagrams of another embodiment of the fourth embodiment. 8 and 9 show an embodiment for constructing the destruction detector 21c shown in FIG. 6 in a grid pattern. FIG. 8 shows a vertical component and FIG. 9 shows a horizontal component.

In FIGS. 8A and 8B, for example, GF
Grooves 53a and 53b are formed on the opposite side surfaces of the vertical component 52 having a rectangular cross section and formed of RP. The vertical component portion 52 faces the portion between the upper end portion 54a having a predetermined length and the lower end portion 54b having a predetermined length, in which the grooves 53a and 53b are not formed, and has the same first and second portions as the above. The sensing members 23 ₁ and 23 ₂ are embedded.

In this portion, the member (GFRP) forming the vertical component 52 is used as a base member, and the first and second members.
The sensing members 23 ₁ and 23 ₂ are stacked to form a multi-layer sensing unit (FIG. 8B). Then, the lead wire 55 is extended to the outside from the first and second sensing members 23 ₁ and 23 ₂ .

The upper end 54a of the vertical component 52 is for adjusting the length, and is cut as appropriate according to the installation form. The lower end portion 54b is, for example, a base foundation embedded portion when forming a fence. In addition, FIG.
The horizontal component portion 56 shown in (C) is, for example, a rod-shaped member formed of GFRP and having a quadrangular cross section (for example, 4 cm square), and the through hole 5 through which the vertical component portion 52 of FIG.
7 are formed at a predetermined interval (for example, 10 cm intervals),
For example, the total length is set to 2 m, and the distance between the outermost end and the through hole 57 adjacent thereto is set to 5 cm. The vertical component 52 is formed in the through hole 57.
Projection 5 that engages with 53a (or 53b) formed on the
7a are formed respectively.

In the vertical structure portion 52, the above-mentioned first
First and second sensing member 23₁, 23 ₂Is buried. An example
For example, within the range of 50 cm of the vertical component 52, the first and
Second sensing member 23₁, 23₂Is buried. this part
The member (GFRP) that forms the lateral component 56 in the base portion
As a material, this and the first and second sensing members 23₁, 23
₂A multi-layer sensing unit is configured in a state where they are stacked. And
The pair of first and second sensing members 23₁, 23₂To
The lead wire 58 is connected and extended to the outside.

That is, by arranging the first and second sensing members 23 ₁ and 23 ₂ at intervals of 50 cm in the horizontal component portion 56, it is possible to cut them by the cutting portion 59 as a unit, and the installation form It is appropriately cut and adjusted according to the above. In this way, the vertical component 52 of FIG. 8 and the horizontal component 56 of FIG. 9 are cut as appropriate according to the size of the area to be installed, and the through holes 57 of the predetermined number of horizontal components 56 have the predetermined number of vertical components. By penetrating 52, a lattice shape as shown in FIG. 6 can be obtained. In this case, the first and second sensing members 23 ₁ and 23 ₂ are connected by the lead wires 55 and 58, respectively.
For example, wiring is performed so that they are connected in series. As a result, since the length can be adjusted depending on the installation form, mass productivity can be improved and flexible installation can be performed on site.

Next, FIG. 10 shows a configuration diagram of an application example of the fourth embodiment. FIG. 10 shows a fence 61 formed by using a plurality of the destruction detectors 21c shown in FIG. 6, for example, a predetermined number of poles 62 formed of GFRP.
Is fixed by concrete 63 in the soil at the lower end. A so-called turning portion 62a is formed at the tip of the pole 62.

The destruction sensor 21c shown in FIG. 6 is laid horizontally and vertically between the poles 62, and a predetermined portion of the lower destruction sensor 21c is buried in the soil. This is to detect the intrusion due to the excavation of the ground. Further, the multi-layer sensing unit 24 _B1 (24 _B2 ) can be appropriately connected to the joint portion 62 b of the pole 62, and the lead wire can be passed through the pole 62.

Further, a predetermined number of linear sensing members 64 (which may be a multi-layer sensing unit) similar to the one described above are provided between the loopback units 62a to sense the invasion of the vehicle.
The fence 61 is, for example, as shown in the figure,
The entire width is 4m and the ground height is 1.85m.

As described above, it is possible to detect the abnormality at an early stage while the fence 61 is being destroyed and to reinforce the fence 61 so as not to be easily destroyed. Further, since no metal member is used, there is no influence of electromagnetic interference such as wind and rain, salt damage, lightning damage, corrosion when buried, and external noise.

Next, FIG. 11 shows a block diagram of a fifth embodiment of the present invention. FIG. 11 (A) shows a net-like destruction detection unit 2
Shows the 1 _D, shows the configuration shown in FIG. 11 (B) Wahimojo sensing unit. The string-shaped sensing unit 71 is shown in FIG.
As shown in (B), a base member 72 made of a string-shaped, for example, aromatic polyamide fiber (aramid fiber) having a high fracture resistance, and a conductive member such as a string-shaped carbon fiber that is easily broken. And a sensing member 73 in the form of a bundle are twisted and formed. In this case, the sensing member 73 is impregnated with an insulating agent such as a brazing material or enamel so as to be in an insulating state on the surface.

Therefore, the string-like sensing portion 71 is knitted in a net shape to form a net (the whole becomes the breakage sensing portion 21 _D ). In this case, the intersecting portion of the sensing member 73 is in an insulating state. Then, the anchors 75 are arranged around a predetermined number by using the dummy string 74 having high fracture resistance.

The breakage sensing portion 21 _D is for storing goods and the like, and when it is to be cut with a knife or the like, the aramid fiber base member 72 is difficult to cut, but the sensing member. 73 is easily cut. That is, even if the alarm operation is performed when the sensing member 73 is cut,
The net cannot be easily cut. Therefore, it is possible to detect an abnormality at an early stage and prevent the theft of a covered product or the like by the base member 72 having high fracture resistance.

[0045]

As described above, according to the invention of claim 1,
Have a multilayer sensing unit and the sensing member of the base member and the conductor of the insulator are laminated in multiple layers, forming more sensitive member reaches a predetermined number
It is composed of a conductive fiber bundle that forms a section, and by detecting an abnormality due to a change in resistance value due to deformation of the sensing member,
The abnormality can be detected early regardless of the direction of the load, and the multi-layer structure can improve the fracture resistance. In addition, the sensing member is made of a conductive material with a predetermined number of ties.
By being composed of fiber bundles, even with a small deformation load
Stress is concentrated on the knot, improving the early detection of abnormalities
Can be made.

According to the invention of claim 2 or 3, multi-layer sensing
Part is installed to intersect the line-shaped insulating member on the plate member.
Or be installed on the side of a grid-shaped insulating member
Further improves the early detection performance of anomalies and destruction resistance.
Can be made.

According to the invention of claim 4 , the insulating member is formed in a fence shape, and the multi-layer sensing portion is provided on the side, and the fence-shaped insulating member has a predetermined number of folding back portions. By installing a sensing member or a multi-layered sensing unit between the reciprocating parts, or by burying the lower part of the insulating member together with the multi-layered sensing unit in the basement, it is possible to improve the breakage resistance and to overcome a fence or excavate. Invasion can be prevented.

According to the fifth aspect of the present invention, the base member and the sensing member are twisted together to form a string-shaped sensing portion, and the string-shaped sensing portion is formed in a net shape, whereby the base member is broken. It is possible to break the sensing member earlier to detect an abnormality earlier and to extend the time for theft by the base member having high fracture resistance.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of destruction detection of FIG.

FIG. 3 is a configuration diagram of a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a third embodiment of the present invention.

5 is a graph showing an example of resistance characteristics with respect to the load shown in FIG.

FIG. 6 is a configuration diagram of a fourth embodiment of the present invention.

FIG. 7 is a plan view of the connected state of FIG.

FIG. 8 is a configuration diagram (1) of another embodiment of the fourth embodiment.

FIG. 9 is a configuration diagram (2) of another embodiment of the fourth embodiment.

FIG. 10 is a configuration diagram of an application example of the fourth embodiment.

FIG. 11 is a configuration diagram of a fifth embodiment of the present invention.

FIG. 12 is a schematic diagram of a conventional destructive sensor.

FIG. 13 is an explanatory diagram of a state in which the destruction sensor is loaded.

[Explanation of symbols]

21 _{A to} 21 _D Destruction sensor 22 _{1 to} 22 ₃ , 72 Base member 23 ₁ First sensing member 23 ₂ Second sensing member 24 _A , 24 _B Multilayer sensing part 25 Hole 41 Plate member 42, 51 Insulating member 52 Vertical Configuration Section 56 Horizontal Configuration Section 57 Through Hole 61 Fence 71 String-like Sensing Section 73 Sensing Member 74 Dummy String 75 Anchor

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Arai 1-6-6 Moto-Akasaka, Minato-ku, Tokyo Inside Sogo Security Guarantee Co., Ltd. (72) Inventor Yoshiharu Wakao 1-6-6 Moto-Akasaka, Minato-ku, Tokyo No. Sogo Security Guarantee Co., Ltd. (72) Inventor Hiroyuki Ueno 1-6-6 Moto-Akasaka, Minato-ku, Tokyo No. 6-6 Gen Moto-Akasaka, Sogo Security Guarantee Co., Ltd. Koichi Terazono 1-6-6 Moto-Akasaka, Minato-ku, Tokyo No. Sogo Security Co., Ltd. (72) Inventor Hiroaki Yanagida 1-3-19 Sasu-cho, Chofu-shi, Tokyo (56) Reference JP-A-59-17123 (JP, A) JP-A-2-230497 (JP, A) JP-A-2-158105 (JP, A) JP-A-62-206144 (JP, A) JP-A-5-189673 (JP, A) JP-A-4-357622 (JP, A) Actual development Sho-64 -27782 (JP, U) Actually opened 63-5589 ( JP, U) Actual development 4-47215 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G08B 13/02 G01N 27/04

Claims (5)

(57) [Claims] 1. A destruction sensor in which a conductive sensing member is attached to an insulating base member and an abnormality is sensed by a change in resistance value due to deformation of the sensing member, wherein the base member is an insulating fiber bundle. And a sensing member composed of the conductor including a conductive fiber bundle ,
The sensing member is deformed to concentrate stress on each conductive fiber.
A destructive sensor , wherein a predetermined number of knots are formed, and the base member and the plurality of sensing members have a multi-layer sensing part formed in multiple layers. 2. An insulating base member and a conductor sensing member.
Is attached, the resistance value changes due to the deformation of the sensing member.
In a destruction detector for detecting an abnormality, the base member
Is composed of an insulator including an insulating fiber bundle, and
Knowledge member is composed of the conductor containing a conductive fiber bundle,
The base member and the plurality of sensing members are formed in multiple layers
It has a multi-layered sensing unit, and an insulating member on a specified plate member
The multi-layered sensing unit is formed in a linear shape
A predetermined line intersecting a predetermined number of lines of the insulating member
A destructive sensor characterized by being arranged in a shape. 3. An insulating base member and a conductor sensing member.
Is attached, the resistance value changes due to the deformation of the sensing member.
In a destruction detector for detecting an abnormality, the base member
Is composed of an insulator including an insulating fiber bundle, and
Knowledge member is composed of the conductor containing a conductive fiber bundle,
The base member and the plurality of sensing members are formed in multiple layers
It has a multi-layered sensing part and a plate-shaped insulating member formed in a grid pattern.
The multi-layer sensing unit is formed in the shape of a long plate, and
Characterized in that it is provided in a predetermined shape on a predetermined side of the edge member.
Destruction sensor to do. 4. An insulating base member and a conductor sensing member.
Is attached, the resistance value changes due to the deformation of the sensing member.
In a destruction detector for detecting an abnormality, the base member
Is composed of an insulator including an insulating fiber bundle, and
Knowledge member is composed of the conductor containing a conductive fiber bundle,
The base member and the plurality of sensing members are formed in multiple layers
It has a multi-layer sensing part, and the insulating member is formed like a fence.
Destruction in which the multi-layer sensing unit is provided in a predetermined shape on a predetermined side
It is a sensor, and the insulating member is provided with a predetermined number of anti-reflection parts.
And the sensing member or line between the shining part
-Shaped multi-layer sensing part is installed or under the insulating member.
Part is buried in the ground with the multi-layer sensing part.
Characteristic destruction detector. 5. An insulating base member having a large breaking elongation,
A conductor with a small elongation at break and changes in resistance due to deformation
The sensing member that detects anomalies in the
A sensing part, wherein the string-shaped sensing part is formed in a mesh shape.
Destruction detector characterized by.