Cutting detection device

Abstract

To provide a cut detection device that can be easily installed in existing electrical equipment. [Solution] The cut detection device 100 has a wire section 110 that is placed on the object to be detected, and a cut determination unit 130 that determines whether the object to be detected has been cut. The wire section 110 has a first connection end 111, a second connection end 113 different from the first connection end 111, and an intermediate detection target installation section 115 located between the first connection end 111 and the second connection end 113 and placed on the object to be detected. The cut determination unit 130 has a first energized end 131 connected to the first connection end 111, a second energized end 133 connected to the second connection end 113, a cut determination circuit section 135 that determines whether the intermediate detection target installation section 115 of the wire section 110 has been cut, and a power supply unit 139 that supplies electricity to the wire section 110 and / or operates the cut determination unit. This makes it easy to install on existing electrical equipment and, consequently, easy to detect the cut of the object to be detected.

Description

Technical Field

[0001] The present invention relates to a cutting detection device that can be easily arranged in existing electrical equipment.

Background Art

[0002] A conventional cutting detection device will be described using the cable 1 shown in FIGS. 7 and 8. As shown in FIG. 7A, in the cable 1, one end side is detachably and electrically connected to the device body 100 of a predetermined device, and the other end side is detachably and electrically connected to a movable part 200 that can move (displace) relative to the device body 100.

[0003] As shown in FIG. 7B, the cable 1 is a flexible cable that can be bent or curved. One end side is detachably and electrically connected to the device body of a predetermined device, and the other end side is detachably and electrically connected to a movable part that can move (displace) relative to the device body. The cable 1 has three conductors 2, a disconnection detection conductor 3 for detecting disconnection, and a covering member 4 that covers these conductors 2 and the disconnection detection conductor 3. The disconnection detection conductor 3 is configured to be more likely to break than the conductor 2. That is, the area of the conductor part 32 of the disconnection detection conductor 3 in the cross section is set smaller than the area of the conductor part 22 of the conductor 2. Also, the outer diameter (diameter) of the conductor part 32 of the disconnection detection conductor 3 is set smaller than the outer diameter of the conductor part 22 of the conductor 2. This provides a cable that can prevent disconnection of the conductor.

[0004] Also, in the present embodiment, the disconnection detection conductor 3 is located inside the covering member 4, that is, in the hollow part 43. However, in the present invention, the disconnection detection conductor 3 may be located outside the covering member 4 or inside the covering member 4 as shown in FIG. 8 (see Patent Document 1 above).

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Publication No. 2004-22178 [Overview of the project] [Problems that the invention aims to solve]

[0006] In the cable 1 having the wire break detection conductor 3 as described above, one end must be connected to the device body 100 and the other end to the movable part 200. In other words, the device body 100 and the movable part 200 require a special structure to allow current to flow through the wire break detection conductor 3. This means that it cannot be easily installed as an add-on to existing electrical equipment whose electrical configuration is already determined, and this is a point that needs improvement.

[0007] Therefore, the present invention aims to provide a disconnection detection device that can be easily installed in existing electrical equipment. [Effects of the Invention]

[0008] The means for solving the problems in this invention and the effects of the invention are shown below.

[0009] The present invention relates to a cutting detection device comprising a wire section placed on a target for detection, and a cutting determination unit for determining whether the target for detection is cut, wherein the wire section comprises a first connection end, a second connection end different from the first connection end, and an intermediate detection target installation section located between the first and second connection ends and placed on the target for detection, and the cutting determination unit comprises a first energized end connected to the first connection end, a second energized end connected to the second connection end, a cutting determination circuit section for determining whether the intermediate detection target installation section of the wire section is cut, and a power supply unit for supplying electricity to the wire section and / or operating the cutting determination unit.

[0010] This allows the cutting section to be easily positioned on the detection target, and consequently, the cutting of the target can be easily detected. Furthermore, it can be easily installed on existing electrical equipment.

[0011] The disconnection detection device according to the present invention further includes a communication unit that transmits disconnection information to a predetermined recipient.

[0012] This allows for immediate notification of a disconnection.

[0013] The cutting detection device according to the present invention is further characterized in that the power supply unit is an uninterruptible power supply.

[0014] This ensures that the necessary power can be supplied at all times.

[0015] The cutting detection device according to the present invention is characterized in that the wire portion has a mounting portion for attaching to the object to be detected.

[0016] This allows the wire section to be easily attached to the object to be detected.

[0017] The cutting detection device according to the present invention is characterized in that the cutting determination unit determines whether the intermediate detection target installation part has been cut based on whether or not the cutting conditions indicating cutting of the intermediate detection target installation part are met.

[0018] This makes it easy to detect disconnections of the target object. [Brief explanation of the drawing]

[0019] [Figure 1] This figure shows an overview of a cutting detection device 100, which is one embodiment of the cutting detection device according to the present invention. [Figure 2] This diagram shows the configuration of the wire section 110, where A shows the state on the side of the first connection end 111 and the second connection end 113, and B shows the state on the other side. [Figure 3] This diagram shows the hardware configuration of the cutting determination unit 130. [Figure 4] This is a flowchart showing the disconnection decision process. [Figure 5]It is a diagram showing another embodiment of the cutting detection device. [Figure 6] It is a diagram showing another embodiment of the cutting detection device. [Figure 7] It is a diagram for explaining a conventional cutting detection device. [Figure 8] It is a diagram for explaining a conventional cutting detection device.

Embodiment for Carrying out the Invention

[0020] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment

[0021] Regarding the cutting detection device according to the present invention, a cutting detection device 100 which is an embodiment will be described as an example.

[0022] First Cutting Detection Device 100 FIG. 1 shows an overview of the cutting detection device 100. The cutting detection device 100 is used, for example, in a power transmission line PL that transmits electricity generated by a solar power generation device SP to a power conditioner PC in a solar power generation system SS. When theft of the power transmission line PL due to cutting occurs, the cutting detection device 100 detects the cutting of the power transmission line PL and reports it to a predetermined reporting destination. Thereby, the occurrence of theft of the power transmission line PL can be reported, and it can lead to early subsequent countermeasures.

[0023] The cutting detection device 100 has a wire part 110 and a cutting determination part 130. The wire part 110 will be described using FIG. 2. As shown in FIGS. 2A and 2B, the wire part 110 is a metal member that can transmit predetermined electricity. As the wire part 110, for example, a so-called general copper wire having a predetermined thickness can be used. When a copper wire is used as the wire part 110, the thickness (diameter) may be determined in consideration of factors such as being easy to attach and not being conspicuous according to the thickness of the power transmission line PL that is the cutting target.

[0024] As shown in Figure 2A, the wire section 110 has a first connection end 111, a second connection end 113, and an intermediate detection target installation section 115. The first connection end 111 and the second connection end 113 are connected to the first energized end 131 (described later) and the second energized end 133 (described later) of the disconnection determination section 130, respectively.

[0025] The intermediate detection target installation section 115 is positioned along the power transmission line PL, which is the target for detecting disconnection. In the disconnection determination section 130, for example, if the first energized end 131 and the second energized end 133 are located close together, as shown in Figure 2A, the intermediate detection target installation section 115 is positioned along the detection target for a predetermined length from the first connection end 111, then, as shown in Figure 2B, it is folded back in a U-shape or V-shape at a predetermined position and positioned along the detection target for a predetermined length, and as shown in Figure 2A, the second connection end 113 is positioned close to the first connection end 111.

[0026] The intermediate detection target installation section 115 is placed on the power transmission line PL by an adhesive adhesive member, such as double-sided tape or adhesive.

[0027] The disconnection determination unit 130 will be explained using Figure 3. The disconnection determination unit 130 has a first energized end 131, a second energized end 133, a disconnection determination circuit unit 135, a communication unit 137, and a power supply unit 139. The first energized end 131 and the second energized end 133 are connected to the first connection end 111 and the second connection end 113 of the wire unit 110, respectively. The first energized end 131 and the second energized end 133 supply electricity to the intermediate detection target placement unit 115 via the first connection end 111 and the second connection end 113 to which they are connected.

[0028] The disconnection determination circuit 135 determines whether or not the wire section 110 is disconnected. The disconnection determination circuit 135 includes a CPU 135a, a memory 135b, and an interface 135c.

[0029] The CPU 135a performs processing based on the operating system (OS), disconnection judgment program, and other applications stored in memory 135b. Memory 135b provides a workspace for the CPU 135a. Memory 135b also stores and retains the operating system (OS), disconnection judgment program, and other application programs. Interface 135c is connected to the first power supply terminal 131, the second power supply terminal 133, the communication unit 137, and the power supply unit 139. The disconnection judgment processing performed by the CPU 135a based on the disconnection judgment program will be described later.

[0030] When the communication unit 137 receives disconnection information from the connection determination circuit unit 135 indicating that a disconnection has occurred, it transmits the disconnection information to a predetermined communication device via a predetermined communication circuit.

[0031] The power supply unit 139 supplies a predetermined amount of electricity to the wire section 110. The power supply unit 139 also supplies power to operate the disconnection detection circuit section 135 and the communication section 137. The power supply unit 139 may obtain the necessary power from an existing power grid or a solar power generation device SP. Alternatively, it may obtain power from a dedicated power supply for the disconnection detection device 100, such as a dedicated solar power generation device or a storage battery. The power supply unit 139 functions as an uninterruptible power supply, ensuring that the necessary power is always available.

[0032] Second Disconnection Decision Process The disconnection determination process performed by the CPU 135a of the disconnection determination circuit unit 135 based on the disconnection determination program will be explained using the flowcharts in Figures 4 and 7. The CPU 135a acquires the voltage between the first energized end 131 and the second energized end 133 via the interface 135c (S401), and determines whether the acquired voltage value satisfies the predetermined disconnection condition indicating disconnection of the intermediate detection target installation unit 115 (S403). As the disconnection condition, for example, the voltage value "0V ± 0.5V" that occurs when no electricity flows between the first energized end 131 and the second energized end 133 is set. The disconnection condition is stored in the memory 135b.

[0033] When CPU 135a determines that the acquired voltage value meets the disconnection conditions, it generates disconnection occurrence information (S405). CPU 135a generates disconnection occurrence information that includes, for example, the date and time the disconnection occurred, and transmission line identification information that identifies the transmission line PL where the disconnection occurred.

[0034] The CPU 135a transmits the generated disconnection information to a predetermined communication terminal via the communication unit 137 (S407).

[0035] If CPU 135a determines in step S403 that the acquired voltage value does not satisfy the disconnection condition, it repeats the processing in steps S401 to S407.

[0036] Thus, with the cutting detection device 100, simply by placing the wire section 110 on the power transmission line PL, it is possible to easily detect and report the cutting of the power transmission line PL, and consequently, the theft of the power transmission line PL.

[0037] [Other embodiments] (1) Arrangement method of the electric wire section 110: In the above-described embodiment 1, the electric wire section 110 is arranged relative to the power transmission line PL, Although it is stated that the wire section 110 will be placed on the power transmission line PL, the method is not limited to the examples shown. For example, as shown in Figure 5, the wire section 210 may be arranged in the intermediate detection target placement section 115, and an auxiliary mounting section 215 having a covering section 215a that covers the intermediate detection target placement section 115 and an attachment section 215b placed below the covering section 215a may be placed thereon. The attachment section 215b has a flexible plane, and an adhesive member such as double-sided tape is placed on this plane and placed on the power transmission line PL which is the detection target.

[0038] (2) Number of wire sections 110: In the above-described embodiment 1, one wire section 110 is connected to the disconnection determination unit 130, but multiple wire sections 110 may be arranged. For example, as shown in the disconnection determination unit 230 in Figure 6, multiple first energized ends 131 and second energized ends 133 may be arranged. In this case, a detection target identification information table may be prepared in which detection target identification information is associated with each first energized end 131 and second energized end 133 so that the power transmission line PL that is the detection target connected to each first energized end 131 and second energized end 133 can be identified, so that the detection target in which a disconnection has occurred can be identified. The disconnection information may also include detection target identification information that identifies the power transmission line PL that is the detection target in which a disconnection has occurred.

[0039] (3) Disconnection conditions: In the above-described embodiment 1, the disconnection conditions were set to the voltage value that occurs when no electricity flows between the first energized end 131 and the second energized end 133. However, the conditions are not limited to the examples provided, as long as they allow for the detection of a disconnection in the intermediate detection target placement section 115. For example, the voltage value that occurs when electricity flows between the first energized end 131 and the second energized end 133 may be set. Alternatively, the current value or resistance value when electricity flows between both ends may be set.

[0040] (4) Placement of the wire section 110: In the above-described embodiment 1, the wire section 110 was placed on the transmission line PL of the solar power generation system SS, but it is not limited to the example shown, as long as it is something that is likely to be cut and, consequently, stolen. For example, it may be a certain steel material or various metal wires before installation that are likely to be stolen.

[0041] (5) Warning sound generator: In the above-described embodiment 1, if the disconnection detection circuit unit 135 determines that a disconnection has occurred, a warning sound generator may be placed at the location where the detection target is located to emit a predetermined warning sound. This allows for a warning to be issued to the person who disconnected the wire.

[0042] (6) Image acquisition device: In the above-described embodiment 1, an image acquisition device may be provided to acquire an image of the area where the detection target is located when the cut determination circuit unit 135 determines that a cut has occurred. This makes it possible to confirm the situation in which a cut has occurred.

[0043] (7) Configuration of the disconnection determination circuit 135: In the above-described embodiment 1, the disconnection determination circuit 135 uses the CPU 135a to perform the disconnection determination process, but it is not limited to the example provided as long as it performs each process. For example, each process may be performed using a dedicated logic circuit. Alternatively, a relay may be used to execute each process. In this case, the first connection end 111 of the wire section 110 is connected to one input end of the relay, the second connection end 113 is connected to one end of the power supply unit 139, and the other end of the power supply unit 139 is connected to the other end of the relay. When a break occurs in the wire section 110, the voltage on the input side of the relay changes from ON to OFF, while the voltage on the output side of the relay changes from OFF to ON, thereby generating break information.

[0044] (8) Cutting decision process: In the above-described embodiment 1, the cutting decision process was shown as a flowchart in Figure 4, but the flowchart is not limited to the example flowchart as long as it can achieve the purpose of the cutting decision process. [Industrial applicability]

[0045] The cutting detection device according to the present invention can be used, for example, as a theft prevention measure for power transmission lines in a solar power generation system. [Explanation of Symbols]

[0046] 100 Cutting detection device 110 Wire section 111 First connection end 113 Second connection end 115 Intermediate detection target installation section 130 Cutting judgment section 131 First energized end 133 Second energized end 135 Disconnection judgment circuit section 135b memory 135c interface 137 Communications Department 139 Power supply section 210 Wire section 215 Mounting support part 215a Covering part 215b Mounting section 230 Cutting judgment section SS Solar Power Generation System SP Solar Power Generation System PC Power Conditioner PL transmission lines

Claims

1. A cutting detection device having a wire section placed on the object to be detected, and a cutting determination section that determines whether the object to be detected has been cut, The aforementioned wire section is First connection end, A second connection end different from the first connection end, An intermediate detection target installation unit located between the first connection end and the second connection end, which is placed on the detection target, It has, The aforementioned cutting determination unit is A first energized end connected to the first connection end, A second energized end connected to the second connection end, A cut determination circuit unit that determines whether or not the intermediate detection target installation part of the electric wire section is cut, A power supply unit for supplying electricity to the aforementioned wire and / or for operating the disconnection detection unit. Having A cutting detection device characterized by the following.

2. In the cutting detection device according to claim 1, further, The communications unit transmits disconnection information to the designated recipient. A cutting detection device having the following features.

3. In the cutting detection device according to claim 2, further, The aforementioned power supply unit is It is an uninterruptible power supply. A cutting detection device characterized by the following.

4. In the cutting detection device according to claim 1, The aforementioned wire section is Mounting part for attaching to the object to be detected, Having A cutting detection device characterized by the following.

5. In the cutting detection device according to claim 1, The aforementioned cutting determination unit is The determination of whether the intermediate detection target installation part is cut is made based on whether or not the cutting conditions indicating the cutting of the intermediate detection target installation part are met. A cutting detection device characterized by the following.

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