JP6979231B2 - An alarm sensor for detecting fraudulent attacks and a safe that uses it - Google Patents

Description

The present invention relates to an alarm sensor for detecting fraudulent attacks that can accurately detect that a fraudulent attack has been applied to a storage structure such as a safe, and a safe that uses the alarm sensor.

Various sensors have been proposed and put into practical use in order to detect that an unauthorized attack has been applied to a structure for storing an article and to warn the outside of the attack (for example, Patent Document 1).

The most common form of these sensors is to fold and arrange electric wires at sufficiently small pitches on an insulating substrate to form a panel and incorporate them into each wall surface of the structure. If a hole is illegally drilled in the wall surface, the electric wire on the insulating substrate will be cut, and this can be electrically detected to detect an unauthorized attack. The electric wire on the insulating substrate may be replaced with an optical fiber.

Further, a form in which two conductive liquid layers are formed by sandwiching an insulating sheet is also known. When a hole is made in the wall surface incorporating this type of sensor, the two liquid layers are electrically conducted through the hole formed in the insulating sheet, and this is detected to detect an unauthorized attack.

Japanese Unexamined Patent Publication No. 2004-46863

According to the former of the prior art, the electric wire or the optical fiber on the insulating substrate needs to form a so-called one-stroke pattern, so that a unique pattern is required according to the size of the wall surface of the structure. There was a problem that production tended to be complicated. Further, in the case of the latter, there is a problem that it is not always easy to industrially realize a structure in which two liquid layers are formed on both sides of the insulating sheet, and the practicality is not sufficient.

Therefore, an object of the present invention is to use an alarm sensor for detecting fraudulent attacks, which is easy to manufacture and has excellent practicality by adopting a single liquid layer in view of the problems of the prior art. To provide a safe to do.

The configuration of the first invention (referring to the invention according to claim 1, the same shall apply hereinafter) according to the present application for achieving such an object is a hollow structure for storing an article or a person. The gist is to provide a conductive liquid to be filled in each wall surface, an electrode for detecting a decrease in the level of the liquid, and an electrode attached on the floor of the space to detect the leakage of the liquid to the indoor side. ..

The liquid can be filled between the outer plate and the inner plate that form each wall surface in a hollow shape.

The configuration of the second invention (referring to the invention according to claim 3, the same shall apply hereinafter) includes an alarm sensor for detecting fraudulent attacks according to the first invention and a control unit for transmitting an e-mail to the outside when the alarm sensor operates. Is the gist.

It should be noted that a destruction portion that mechanically destroys the stored memory disk when the alarm sensor is operated can be added.

According to the configuration of the first invention, the conductive liquid filled in each wall surface of the structure leaks to the outside when a hole is made in the wall surface or the wall surface is destroyed by an unauthorized attack from the outside. Put it out and the level drops. Therefore, it is possible to detect an illegal attack by electrically detecting this with an electrode that detects a level drop. The conductive liquid referred to here may be ordinary water, and may further contain arbitrary conductive ions. In addition, the electrodes for detecting the level drop are provided in pairs that are electrically conductive via a liquid of a normal level, and one or both of them go out of the liquid due to the level drop of the liquid, and the conduction of both is cut off. Select the placement position so that it can be used. Since it is not necessary to separate the liquid layer into two layers, the overall structure is simple and easy to manufacture, and it is excellent in practicality.

If an electrode for detecting a liquid leak is attached on the floor of the structure, if the liquid leaks onto the floor due to an unauthorized attack, the unauthorized attack can be detected more quickly than the detection of the decrease in the level of the liquid.

In the first invention, the storage structure means an arbitrary structure having a space for storing goods and people inside, for example, a safe, a storage, a storage, and the like for transporting goods. It shall include containers and hulls of goods, cargo boxes for trucks, structures for important equipment, and prison vaults in prisons.

According to the configuration of the second invention, the control unit can send an e-mail to the outside when the alarm sensor for detecting an unauthorized attack is operated, and notify the outside of the fact of an unauthorized attack on the safe. The mail may be transmitted by any line such as wired, wireless, and the Internet. Further, when the user of the safe and the administrator are different persons, detailed information such as whether or not the user has used the safe properly and whether or not the safe has been misused may be sent by e-mail to the administrator.

If a memory disk destruction part is added, the destruction part can be activated to mechanically destroy the stored memory disk when an unauthorized attack is received, so that the memory disk can be stolen by an unauthorized attack. Can effectively prevent such situations. The destruction portion can mechanically break and destroy the memory disk by, for example, a wire cutter, a heater wire, a laser cutter, a hydraulic cutter, or the like. However, the memory disk referred to here refers to a plastic disk memory such as a CVD, DVD, or Blu-ray disc.

Schematic diagram of the overall configuration (1) Schematic diagram of the overall configuration (2) Overall configuration perspective view (1) Block system diagram Key part configuration explanatory diagram (1) Key part configuration explanatory diagram (2) Program flow chart Overall configuration perspective view (2)

Hereinafter, embodiments of the invention will be described with reference to the drawings.

The alarm sensor 10 for detecting fraudulent attacks includes a set of two conductive mesh materials 11 and 11 (FIG. 1). In FIG. 1, the alarm sensor 10 is commonly installed on each wall surface of the double structure including the outer plate 21 and the inner plate 22 of the safe 20. However, FIGS. 1 (A) and 1 (B) are a schematic vertical sectional view and a partially broken schematic perspective view of the safe 20, respectively, and FIG. 1 (C) shows the mesh material 11 at the time of an unauthorized attack by the drill D. 11 is a schematic operation sectional view of a main part of 11.

In FIG. 1, the two mesh materials 11 and 11 are insulated from each other with an insulating sheet (not shown) interposed therebetween, and are arranged doubly as a whole. Regardless of the illustration, it is assumed that the alarm sensor 10 is mounted on each wall surface of the safe 20 without leaving a substantial space between the outer plate 21 and the inner plate 22. Further, regardless of FIG. 1, the alarm sensor 10 may be divided into each wall surface of the safe 20, and the inner and outer mesh materials 11 and 11 on each wall surface may be electrically connected to all the wall surfaces.

When an unauthorized attack such as drilling a hole with a drill D is applied to an arbitrary wall surface of the safe 20 from the outside (FIG. 1 (C)), the alarm sensor 10 comes into contact with the mesh materials 11 and 11 to generate electricity. Conducts in a positive manner. Therefore, it is possible to detect this and detect the fact of an unauthorized attack. As for the electrical conduction of the mesh materials 11 and 11, as shown in FIG. 1C, not only one mesh material 11 is deformed and contacts the other mesh material 11 side, but also the mesh materials 11 and 11 Both may be electrically conductive via a drill D penetrating the. Further, the alarm sensor 10 using the mesh materials 11 and 11 can sufficiently and effectively operate even for sabotage by a tool other than the drill D.

Other embodiments

The alarm sensor 10 is configured by filling a conductive liquid 12 between the outer plate 21 and the inner plate 22 constituting each hollow wall surface of the safe 20, and arranging electrodes 13 and 13 for level detection. Can be done (FIGS. 2 (A), (C)). However, FIGS. 2 (A) and 2 (B) are a schematic vertical sectional view and a schematic vertical sectional enlarged configuration diagram of the safe 20, respectively, and FIGS. 2 (C) and 2 (D) are a schematic operation diagram and an enlarged main part, respectively. It is a schematic operation diagram, and FIG. 2 (E) is a comparative explanatory diagram corresponding to FIG. 2 (D).

The space between the outer plate 21 and the inner plate 22 of the safe 20 is formed in a hollow shape capable of filling the liquid 12 via spacers 23, 23, etc. that bend in a crank shape (FIG. 2B). Further, the electrodes 13 and 13 are fixed downward with respect to the top surface of the outer plate 21 (FIG. 2 (C)). Therefore, when the liquid 12 is fully filled between the outer plate 21 and the inner plate 22 so that both the electrodes 13 and 13 sink (FIG. 2A), the electrodes 13 and 13 are electrically connected via the liquid 12. Conducts to.

On the other hand, when a hole is made in the wall surface by, for example, an illegal attack by a drill D from the outside of the safe 20 (FIG. 2 (C)), leakage 12a and 12a inside and outside due to the liquid 12 occur, and the level of the liquid 12 drops. Then, the electrodes 13 and 13 are exposed above the liquid 12, and the conduction between the electrodes 13 and 13 is cut off. Therefore, this can be electrically detected to detect an unauthorized attack. At this time, even if the cutting edge of the drill D happens to hit the position of the spacer 23, the spacer 23 is bent (FIGS. 2B and 2D), so that the liquid 12 leaks 12a without fail. , Unauthorized attacks can be detected reliably. On the other hand, if the spacer 23 is linear (FIG. 2 (E)), the drill D may penetrate the spacer 23 and prevent leakage 12a of the liquid 12, and an unauthorized attack may not be detected. ..

An electrode 14 for detecting the leakage 12a of the liquid 12 to the indoor side may be arranged on the floor inside the safe 20 (FIG. 2C). The electrode 14 can detect the leak 12a of the liquid 12 prior to the detection of the level drop of the liquid 12 by the electrodes 13 and 13, and can detect an unauthorized attack more quickly.

The safe 20 incorporating the alarm sensor 10 of FIG. 1 or 2 includes an outer door 24 and an inner door 25 (FIG. 3).

A dial lock with a key (not shown) is attached to the outer door 24, and a key 25a for inputting a personal identification number is mounted on the inner door 25. A camera 26 is arranged above the inner door 25, and a control unit 30 is incorporated in the safe 20.

The control unit 30 includes a microcomputer 31 to which the alarm sensor 10 and the key 25a are connected (FIG. 4).

The microcomputer 31 is supplied with power from the commercial power supply AC via the board power supply 32, and a backup battery BT is connected to the output side of the board power supply 32. Further, the microcomputer 31 can be connected to an external communication line such as an external Internet line, a telephone line, or a mobile phone line by wire or wirelessly via any of the Wi-Fi terminal 33a, the Blu-ray terminal 33b, the USB terminal 33c, and the LAN terminal 33d. It is possible to communicate in the direction. Further, the microcomputer 31 is connected to a display 25b for operation instructions such as a key 25a, a solenoid 25c for unlocking and controlling the inner door 25, a door sensor 25d for detecting the opening and closing of the inner door 25, and a camera 26. A destruction unit 40 that mechanically destroys the memory disk in the safe 20 is connected. In addition to being supplied with power from the commercial power supply AC, the destruction unit 40 is also supplied with power from a backup battery (not shown).

The destruction unit 40 can destroy a plurality of memory disks M, M ... Stored in a row in a safe 20 at once via, for example, a heater wire 41 (FIGS. 5A, 5A, (FIG. 5A). B)). That is, the heater wire 41 is linearly stretched and held via appropriate movable supports 41a, 41a (FIG. 5A), and is energized and heated to heat the heater wires 41 in the radial direction of the memory disks M, M ... (In the direction of the arrow in FIG. 5B), the memory disks M, M ... can be melted and destroyed at once in the radial direction.

Further, the breaking portion 40 may be a wire cutter 42 wound around the sprockets 42a and 42a (FIG. 6A). By rotationally driving the wire cutter 42 via the sprockets 42a and 42a and advancing in the radial direction of the memory disks M, M ... (in the direction of the arrow in FIG. 6B), the diameters of the memory disks M, M ... It can be cut in the direction and destroyed. The breaking portion 40 may have a format other than those shown in FIGS. 5 and 6.

The operation of the control unit 30 in FIG. 4 is, for example, as shown in the program flowchart of FIG. 7. However, in the program of FIG. 7, in addition to unlocking the dial lock, opening the outer door 24 of the safe 20, and operating the key 25a to open the inner door 25, an unauthorized attack on the safe 20 is executed. It is assumed that the operation is started when the alarm sensor 10 is operated.

When it was first confirmed that the program was not activated due to the operation of the alarm sensor 10 (program step (1) in FIG. 7, hereinafter simply described as (1)), the key 25a was operated. (2), and then confirm the correctness of the password entered via the key 25a (3). If the password is correct (3), the solenoid 25c is driven to unlock the inner door 25, and the opening of the inner door 25 is confirmed via the door sensor 25d (4). It is set and stored together (5), and a series of operation content information is sent by e-mail to a predetermined contact to report (6). The above operation corresponds to, for example, a case where a legitimate user of the safe 20 inputs a legitimate password to use the inside of the safe 20 legitimately, and the fact is that the mail of the program step (6) is sent. It will be notified to the administrator via. However, the mail sent in the program step (6) can be accompanied by shooting data of a moving image or a still image such as a photograph of the user's face taken by the camera 26.

Next, in the program step (3), if the entered password is incorrect, the display 25b is displayed to that effect and an instruction is given to re-enter the password, and the number of times the password is erroneously entered is increased. After confirming that it is within the set allowable number of times (7), set and store the information that the safe 20 could not be opened due to an error in the password (8) together with the date and time information, and store the fact. Send an email to the administrator (6). At this time as well, the user's shooting data taken by the camera 26 can be attached to the e-mail.

When the alarm sensor 10 operates due to an unauthorized attack on the safe 20 (1), the program activates the destruction unit 40 to destroy the memory disks M, M ... Stored in the safe 20 (9). Information to that effect is set and stored together with date and time information (10), and the fact is sent to the administrator by e-mail to report (6). The same applies when it is detected in the program step (7) that the number of times the password is erroneously entered exceeds the set allowable number ((7), (9), (10)).

In FIGS. 3 to 7, if a door sensor for detecting the opening / closing of the outer door 24 of the safe 20 is provided and connected to the microcomputer 31, the outer door 24 is opened by operating the camera 26 by opening the outer door 24. In addition to being able to reliably take a photograph of a person's face, for example, it detects that the outer door 24 has been opened illegally without using a key, and activates the destruction unit 40 before the inner door 25 is opened. It is also possible. However, in order to realize the latter, a solenoid for the outer door 24 shall be added in order to electrically open the outer door 24 by regular use of a dial lock with a key. The destruction unit 40 may omit the memory disks M, M ... When there is no plan to store them in the safe 20. Further, a so-called lift sensor may be added in order to detect unauthorized removal of the safe 20. The control unit 30 can deal with the operation of the lift sensor in the same manner as when the alarm sensor 10 is in operation.

The inside of the safe 20 may be divided into a plurality of small rooms with an inner door 25 (FIG. 8). Door sensors 25d for opening / closing detection are attached to the inner doors 25, 25 ... Of each small room, and the user of the safe 20 is allowed to use only one or a plurality of specific small rooms designated in advance. Other uses are prohibited. Therefore, as long as the user can use the available small room properly, the mail to the administrator should be omitted, and the mail should be sent to the administrator only when the inner door 25 of the small room that is not allowed to be used is opened. By doing so, it is possible to reduce the number of emails that reach the administrator and make it easier to manage.

In the above explanation, the user and manager of the safe 20 may be, for example, a person in charge of a company or an organization and its boss, or as a single or multiple children living separately from an elderly parent in a general household. , So-called transfer fraud and other damage prevention measures may be used. Therefore, the destination of the mail in the program step (6) of FIG. 7 may be a single destination or a plurality of destinations, if necessary.

The safe 20 can be any structure provided with a space for storing goods and people.

INDUSTRIAL APPLICABILITY The present invention can be widely and suitably applied to applications for detecting an unauthorized attack targeting an arbitrary structure other than the safe 20.

M ... Memory disk 10 ... Alarm sensor 12 ... Liquid 12a ... Leakage 13, 14 ... Electrode 20 ... Safe 30 ... Control unit 40 ... Destruction unit

Patent applicant Linear Circuit Co., Ltd.

Claims (4)

A conductive liquid to be filled in each hollow wall surface of a storage structure having a space for storing goods and people inside, an electrode for detecting a decrease in the level of the liquid, and an electrode attached on the floor of the space. , An alarm sensor for detecting fraudulent attacks , comprising an electrode for detecting leakage of the liquid to the indoor side. The alarm sensor for detecting an unauthorized attack according to claim 1 , wherein the liquid is filled between the outer plate and the inner plate having each wall surface formed in a hollow shape. A safe comprising the alarm sensor for detecting fraudulent attacks according to claim 1 or 2, and a control unit for transmitting an e-mail to the outside when the alarm sensor operates. The safe according to claim 3, further comprising a destruction portion that mechanically destroys a stored memory disk when the alarm sensor is operated.

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