Direction identification system, flight arrival direction identification system, and direction identification program

Abstract

A direction identification system (1) comprises: a first conduction part (11) provided with a plurality of intersecting first electroconductive materials; a second conduction part (12) that is disposed so as to face the first conduction part (11) with an interval of a prescribed distance therebetween and is provided with a plurality of intersecting second electroconductive materials; a power supply unit (10) that supplies a current to the electroconductive materials of the first conduction part (11) and second conduction part (12); a first current interruption detection unit (21) that detects interruption of current to the first electroconductive materials while energized; a second current interruption detection unit (22) that detects interruption of current to the second electroconductive materials while energized; a damage position identification unit (302) that identifies damage positions of the first conduction part (11) and the second conduction part (12); and a direction calculation unit (303) that calculates a damage direction on the basis of the identified damage positions of the first conduction part (11) and the second conduction part (12) and a prescribed distance.

Description

Direction identification system, flight direction identification system and direction identification program

[0001] The present disclosure relates to a direction identification system, an incoming direction identification system, and a direction identification program for identifying a direction related to damage.

[0002] Various techniques for identifying a hit portion have been proposed in the past. As an example of such a technique, Patent Document 1 discloses a hit portion identification device that includes a hit sensing means configured by arranging a plurality of hit sensors to detect the hit portion, a personal authentication means for identifying an individual based on identification information, a data processing means for compiling the hit portion detection results from the hit sensing means and the identification information from the personal authentication means, and a transmission means for transmitting the data compiled by the data processing means.

[0003] Patent No. 3949070

[0004] However, the hit site identification device disclosed in Patent Document 1 has a problem in that it cannot identify the direction of damage.

[0005] The present disclosure has been made to solve such problems, and aims to provide a direction identification system, an incoming direction identification system, and a direction identification program that are capable of identifying the direction of damage.

[0006] a first conductive portion having a plurality of crossed first conductive materials; a second conductive portion having a plurality of crossed second conductive materials and arranged to face the first conductive portion at a predetermined distance; a power supply portion that supplies current to the conductive materials of the first conductive portion and the second conductive portion; a first current interruption detection portion that detects a current interruption for each of the plurality of first conductive materials that are energized by the current supplied from the power supply portion; a second current interruption detection portion that detects a current interruption for each of the plurality of second conductive materials that are energized by the current supplied from the power supply portion; a damage position identification portion that identifies a damage position in the first conductive portion and a damage position in the second conductive portion; and a direction calculation portion that calculates a damage direction based on the damage position in the first conductive portion and the damage position in the second conductive portion identified by the damage position identification portion and the predetermined distance between the first conductive portion and the second conductive portion, When the first current interruption detection unit detects a current interruption in a current-carrying first conductive material among the plurality of first conductive materials that is arranged in a first direction, and a current interruption in a current-carrying first conductive material among the plurality of first conductive materials that is arranged at a predetermined angle with respect to the first direction, the damage location identification unit identifies the intersection position of the two first conductive materials where the current has been interrupted as the first conductive portion damage location, and when the second current interruption detection unit detects a current interruption in a current-carrying second conductive material among the plurality of second conductive materials that is arranged in a second direction, and a current interruption in a current-carrying second conductive material among the plurality of second conductive materials that is arranged at a predetermined angle with respect to the second direction, the damage location identification unit identifies the intersection position of the two second conductive materials where the current has been interrupted as the second conductive portion damage location.

[0007] The flying direction identification system according to the present disclosure includes a speed calculation unit that, when a first conductive part and a second conductive part provided in the direction identification system are damaged by an incoming object, calculates the speed of the object based on the time corresponding to the difference between the time when the current through the first conductive material is interrupted and the time when the current through the second conductive material is interrupted, and the distance traveled by the object between the first conductive part and the second conductive part.

[0008] The direction identification program according to the present disclosure includes the steps of: determining whether a current interruption has been detected in a current-carrying first conductive material that is arranged in a first direction among a plurality of first conductive materials that are arranged to intersect with each other, and whether a current interruption has been detected in a current-carrying first conductive material that is arranged at a predetermined angle with respect to the first direction among the plurality of first conductive materials; specifying, when it is determined that a current interruption has been detected in a current-carrying first conductive material that is arranged in the first direction and a current-carrying first conductive material that is arranged at a predetermined angle with respect to the first direction, a location where the two first conductive materials intersect with each other, and whether a current interruption has been detected in a current-carrying second conductive material that is arranged in a second direction among a plurality of second conductive materials that are arranged to intersect with each other, and whether a current interruption has been detected in a current-carrying second conductive material that is arranged at a predetermined angle with respect to the second direction among the plurality of second conductive materials; When it is determined that an interruption of current has been detected in a second conductive material that is arranged in a second direction and is conducting current, and an interruption of current has been detected in a second conductive material that is arranged at a predetermined angle relative to the second direction, the following steps are executed: identifying the position where the two second conductive materials where the current has been interrupted intersect as a second conductive portion damage position; and calculating the damage direction based on the identified first conductive portion damage position and second conductive portion damage position and a predetermined distance between the first conductive portion and second conductive portion that are arranged to face each other with a gap between them.

[0009] The present disclosure makes it possible to provide a direction identification system, an incoming direction identification system, and a direction identification program that can identify the direction of damage.

[0010] 1 is a block diagram showing an example of a configuration of a direction identification device according to the present disclosure. FIG. 2 is a schematic diagram showing an example of a first conductive unit. FIG. 3 is a schematic diagram showing an example of a first conductive unit and a second conductive unit. FIG. 4 is a block diagram showing an example of functions of a program according to the present disclosure. FIG. 4 is a schematic diagram showing an example of a first conductive unit. FIG. 5 is a schematic diagram showing an example of a second conductive unit. FIG. 6 is a diagram for explaining a method for calculating a damage angle or an arrival angle. FIG. 7 is a diagram for explaining a method for calculating a damage angle or an arrival angle. FIG. 8 is a diagram for explaining a method for calculating a damage angle or an arrival angle. FIG. 9 is a diagram for explaining a method for calculating a damage angle or an arrival angle. FIG. 10 is a flowchart showing processing executed by a direction identification device according to the present disclosure. FIG. 11 is a flowchart showing processing executed by a direction identification device according to the present disclosure. FIG. 12 is a block diagram showing another example of functions of a program according to the present disclosure.

[0011] FIG. 1 is a block diagram showing an example of the configuration of a direction identification device 1 according to the present disclosure. The direction identification device 1 is a device for identifying a direction related to damage. The direction related to damage includes the direction of damage caused by an object and the direction of arrival of an incoming object. A specific example of the direction identification device 1 is a shooting target. The direction identification device 1 may also be configured as a device that can be placed at any position, such as on the outer surface of a vehicle. The direction identification device 1 corresponds to a direction identification system and an incoming direction identification system.

[0012] The direction identification device 1 includes a power supply unit 10, a first conductive unit 11, a second conductive unit 12, a first current interruption detection unit 21, a second current interruption detection unit 22, a calculation unit 30, a communication interface (I / F) 40, and a memory device 50.

[0013] The power supply unit 10 is a circuit connected to the conductive material of the first conductive portion and the conductive material of the second conductive portion to supply current. Specifically, the power supply unit 10 supplies current supplied from various power sources (not shown) to each of the first conductive materials in the first direction and each of the second conductive materials in the second direction.

[0014] The first conductive portion 11 includes a plurality of first conductive materials arranged to intersect when viewed from the front. As shown in FIG. 2, the plurality of first conductive materials are composed of first conductive materials 111a to 111g arranged in a first direction (hereinafter referred to as "first conductive materials in the first direction") and first conductive materials 112a to 112g arranged at a predetermined angle relative to the first direction (hereinafter referred to as "first conductive materials in the other direction"). The predetermined angle may be any angle, such as 90°. The first conductive materials in the first direction and the first conductive materials in the other direction may be arranged at equal intervals.

[0015] The second conductive portion 12 includes a plurality of second conductive materials arranged to intersect when viewed from the front. Similar to the plurality of first conductive materials, the plurality of second conductive materials are composed of second conductive materials arranged in a second direction (hereinafter referred to as "second direction second conductive materials") and second conductive materials arranged at a predetermined angle relative to the second direction (hereinafter referred to as "other direction second conductive materials"). The predetermined angle may be any angle, such as 90°. The second direction second conductive materials and the other direction second conductive materials may be arranged at equal intervals.

[0016] As shown in FIG. 3 , the first conductive portion 11 and the second conductive portion 12 are arranged to face each other with a predetermined distance L between them. The predetermined distance L can be any distance. The multiple first conductive materials of the first conductive portion 11 can be fixed with a film or the like made of a non-conductive material. The multiple first conductive materials are insulated from each other. Similarly, the multiple second conductive materials of the second conductive portion 12 can be fixed with a film or the like made of a non-conductive material. The multiple second conductive materials are insulated from each other. In this embodiment, the second conductive portion 12 is arranged on the side from which an object enters, relative to the first conductive portion 11.

[0017] The first current interruption detection unit 21 is a circuit that detects the interruption of current flowing through each first conductive material of the first conductive portion 11. Specifically, the first current interruption detection unit 21 detects the interruption of current in each first conductive material in a first direction through which the current supplied from the power supply unit 10 flows. The first current interruption detection unit 21 also detects the interruption of current in each first conductive material in another direction through which the current supplied from the power supply unit 10 flows. When the first current interruption detection unit 21 detects the interruption of current in a first conductive material, it outputs an interruption detection signal indicating that the current has been interrupted and indicating identification information of the first conductive material through which the current has been interrupted.

[0018] The second current interruption detection unit 22 is a circuit that detects the interruption of current flowing through each second conductive material of the second conductive portion 12. Specifically, the second current interruption detection unit 22 detects the interruption of current in each second conductive material in the second direction through which the current supplied from the power supply unit 10 flows. The second current interruption detection unit 22 also detects the interruption of current in each second conductive material in the other direction through which the current supplied from the power supply unit 10 flows. When the second current interruption detection unit 22 detects the interruption of current in a second conductive material, it outputs an interruption detection signal indicating that the current has been interrupted and indicating identification information of the second conductive material through which the current has been interrupted.

[0019] The arithmetic device 30 is a device that performs overall control of the direction identification device 1. Specific examples of the arithmetic device 30 include processors such as a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). The arithmetic device 30 executes a program stored in the storage device 50 to perform a method defined by the program. Note that, in other embodiments, the functions performed by the arithmetic device 30 may also be performed by an integrated circuit such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit). These devices correspond to computers.

[0020] The communication I / F 40 is an interface for communicating data with other devices. The communication I / F 40 can transmit the processing results of the arithmetic device 30 to other devices. The processing results of the arithmetic device 30 include the damage direction of the damaged object, the angle and direction of arrival of the incoming object, the speed of the incoming object, the azimuth angle and direction of arrival of the incoming object, and the size of the damaged object. The communication I / F 40 can also receive positioning signals transmitted from a satellite positioning system. The communication I / F 40 can transmit the positioning signals together with the processing results of the arithmetic device 30 to other devices.

[0021] The storage device 50 stores various data such as programs executed by the arithmetic device 30 and data processed by the arithmetic device 30 .

[0022] 4 is a block diagram showing an example of functions of a program 300 executed by the arithmetic device 30. The program 300 executed by the arithmetic device 30 includes a detection signal determination unit 301, a damage position identification unit 302, a direction calculation unit 303, a velocity calculation unit 304, a reference azimuth angle calculation unit 305, an arrival azimuth information calculation unit 306, and a magnitude calculation unit 307.

[0023] The detection signal determination unit 301 is a program that determines the interruption detection signals output by the first current interruption detection unit 21 and the second current interruption detection unit 22. More specifically, when the detection signal determination unit 301 detects the interruption detection signal output by the first current interruption detection unit 21, it determines whether or not an interruption of a current through a first conductive material in a first direction and / or a first conductive material in another direction has been detected, based on the identification information of the first conductive material included in the interruption detection signal. Similarly, when the detection signal determination unit 301 detects the interruption detection signal output by the second current interruption detection unit 22, it determines whether or not an interruption of a current through a second conductive material in a second direction and / or a second conductive material in another direction has been detected, based on the identification information of the second conductive material included in the interruption detection signal.

[0024] The damage position identification unit 302 is a program that identifies the damage positions of the first conductive portion 11 and the second conductive portion 12. Specifically, the damage position identification unit 302 identifies the first conductive material in the first direction where a current interruption was detected and the first conductive material in the other direction, based on the identification information of the first conductive material included in the interruption detection signal output by the first current interruption detection unit 21. The damage position identification unit 302 then identifies the intersection position of the identified first conductive material in the first direction and the first conductive material in the other direction as the damage position of the first conductive portion 11.

[0025] 5 , the first current interruption detection unit 21 outputs an interruption detection signal including identification information of the first conductive material 111b in the first direction and an interruption detection signal including identification information of the first conductive material 112c in the other direction. Based on the identification information of the first conductive material included in these interruption detection signals, the damage position identification unit 302 can identify the first conductive material 111b in the first direction where a current interruption was detected and the first conductive material 112c in the other direction. The damage position identification unit 302 then identifies the intersection of the identified first conductive material 111b and first conductive material 112c as the damage position of the first conductive part 11.

[0026] Similarly, damage position identification unit 302 identifies the second conductive material in the second direction where the current interruption was detected and the second conductive material in the other direction, based on the identification information of the second conductive material included in the interruption detection signal output by second current interruption detection unit 22. Damage position identification unit 302 then identifies the intersection position of the identified second conductive material in the second direction and the second conductive material in the other direction as the damage position of second conductive part 12.

[0027] 6 , the second current interruption detection unit 22 outputs an interruption detection signal including identification information of the second conductive material 121d in the second direction and an interruption detection signal including identification information of the second conductive material 122d in the other direction. Based on the identification information of the second conductive material included in these interruption detection signals, the damage position identification unit 302 can identify the second conductive material 121d in the second direction where a current interruption was detected and the second conductive material 122d in the other direction. The damage position identification unit 302 then identifies the intersection of the identified second conductive material 121d and second conductive material 122d as the damage position of the second conductive part 12.

[0028] The direction calculation unit 303 is a program that calculates the damage direction caused by the damaged object or the incoming direction of the flying object. Specifically, the direction calculation unit 303 calculates a damage angle or an incoming angle based on the damage positions of the first conductive part 11 and the second conductive part 12 identified by the damage position identification unit 302 and a predetermined distance L between the first conductive part 11 and the second conductive part 12, and calculates the damage direction or the incoming direction defined by the damage angle or the incoming angle. In this embodiment, the direction calculation unit 303 calculates the damage angle or the incoming angle based on the damage position of the conductive part of the first conductive part 11 arranged on the opposite side from the side where the object enters, and calculates the damage direction or the incoming direction defined by the damage angle or the incoming angle.

[0029] 7 to 10 are diagrams for explaining a method for calculating the damage angle or the incident angle. As shown in these figures, the damage positions of the first conductive portion 11 and the second conductive portion 12 can be expressed by two-dimensional coordinates in which the first conductive portion 11 and the second conductive portion 12 are on a plane. Each position (x1, y1) to (xn, yn) of the first conductive portion 11 faces each position (X1, Y1) to (Xn, Yn) of the second conductive portion 12. Note that n is an arbitrary integer.

[0030] 7 shows an example in which the damage position of the first conductive part 11 is (x2, y3) and the damage position of the second conductive part 12 is (X4, Y3). In this case, the trajectory of the object is represented by a line passing through the damage position (X4, Y3) of the second conductive part 12 and the damage position (x2, y3) of the first conductive part 11. Therefore, the angle α based on the damage position (x2, y3) of the first conductive part 11 is the damage angle or the incident angle. The angle α is the angle between the perpendicular N to the first conductive part 11 and the trajectory of the object, and is defined by Equation 1. The direction calculation unit 303 calculates the damage direction or the incident direction defined by the angle α. Here, L is the predetermined distance between the first conductive portion 11 and the second conductive portion 12. A represents the distance between the position (X2, Y3) of the second conductive portion 12 facing the damaged position (x2, y3) of the first conductive portion 11 and the damaged position (X4, Y3) of the second conductive portion 12. The distance A can be calculated based on the distance between adjacent conductive materials of the second conductive portion 12 in the second direction.

[0031] FIG. 8 shows an example in which the damage position of the first conductive part 11 is (x2, y3) and the damage position of the second conductive part 12 is (X2, Y5). In this case, the trajectory of the object is represented by a line passing through the damage position (X2, Y5) of the second conductive part 12 and the damage position (x2, y3) of the first conductive part 11. Therefore, the angle β based on the damage position (x2, y3) of the first conductive part 11 is the damage angle or the incident angle. The angle β is the angle between the perpendicular N to the first conductive part 11 and the trajectory of the object, and is defined by Equation 2. The direction calculation unit 303 calculates the damage direction or the incident direction defined by the angle β. Here, B represents the distance between the position (X2, Y3) of the second conductive part 12 facing the damaged position (x2, y3) of the first conductive part 11 and the damaged position (X2, Y5) of the second conductive part 12. Distance B can be calculated based on the distance between adjacent conductive materials of the second conductive part 12 in the other direction.

[0032] FIG. 9 shows an example in which the damage position of the first conductive part 11 is (x2, y3) and the damage position of the second conductive part 12 is (X4, Y4). In this case, the trajectory of the object is represented by a line passing through the damage position (X4, Y4) of the second conductive part 12 and the damage position (x2, y3) of the first conductive part 11. Therefore, angles α and γ based on the damage position (x2, y3) of the first conductive part 11 are the damage angle or the incident angle. In this case, angle α is the angle between a projection line I obtained by projecting the trajectory of the object onto a vertical plane of the first conductive part 11 and a perpendicular line N to the first conductive part 11, and is defined by Equation 1 above. Angle γ is the angle between the projection line I and the trajectory of the object and is defined by Equation 3. The direction calculation unit 303 calculates the damage direction or the incident direction defined by angle α and angle γ. Here, C is calculated using the distance L and the distance A based on Equation 4.

[0033] 10 shows a case where the damage position of the first conductive part 11 is (x2, y3) and the damage position of the second conductive part 12 is (X2, Y3). In this case, the trajectory of the object is represented by a line passing through the damage position (X2, Y3) of the second conductive part 12 and the damage position (x2, y3) of the first conductive part 11. In this case, the damage position of the first conductive part 11 and the damage position of the second conductive part 12 face each other. Therefore, the damage direction or the flying direction based on the damage position (x2, y3) of the first conductive part 11 is perpendicular to the surface of the first conductive part 11 and the surface of the second conductive part 12.

[0034] The speed calculation unit 304 is a program that calculates the speed of the object that has damaged the first conductive portion 11 and the second conductive portion 12. Specifically, the speed calculation unit 304 calculates the speed of the object based on the time corresponding to the difference between the time when the current to the energized first conductive material is interrupted and the time when the current to the energized second conductive material is interrupted, and the distance D traveled by the object between the first conductive portion 11 and the second conductive portion 12. The distance D traveled by the object corresponds to the distance between the damaged position in the first conductive portion 11 and the damaged position in the second conductive portion 12.

[0035] In the example of FIG. 7, the moving distance D １ can be calculated using the distance L and the distance A based on Equation 5.

[0036] In the example of FIG. 8, the moving distance D ２ can be calculated using the distance L and the distance B based on Equation 6.

[0037] In the example of FIG. 9, the moving distance D ３ can be calculated using distance B and distance C based on Equation 7.

[0038] In the example of FIG. 10, the moving distance D of the object is the same as the distance L.

[0039] The reference azimuth angle calculation unit 305 is a program that calculates a reference azimuth angle, which is an azimuth angle indicating an orientation (hereinafter referred to as the "reference azimuth") based on the surface of the first conductive part 11 or the second conductive part 12. In this embodiment, the azimuth of the perpendicular N to the surface of the first conductive part 11 or the second conductive part 12 is used as the reference azimuth. The reference azimuth angle is expressed as an angle of 0 degrees or more but less than 360 degrees. For example, north, east, south, and west are 0 degrees, 90 degrees, 180 degrees, and 270 degrees, respectively. The reference azimuth angle calculation unit 305 can calculate the reference azimuth angle based on information output by a geomagnetic sensor (not shown), such as an MI (Magneto Impedance) sensor or an MR (Magneto Resistance) sensor. The geomagnetic sensor is positioned so that the positional relationship between the geomagnetic sensor and the surface of the first conductive part 11 or the surface of the second conductive part 12 is constant.

[0040] The arrival direction information calculation unit 306 is a program that calculates arrival direction information based on the reference azimuth calculated by the reference azimuth angle calculation unit 305 and the object's arrival angle, which defines the arrival direction, calculated by the direction calculation unit 303. The arrival direction information includes at least one of the object's arrival azimuth angle and arrival direction. For example, in the examples of Figures 7 and 9, the arrival direction corresponds to a direction shifted west by an arrival angle α from the reference direction, which is the direction of the perpendicular line N. In the examples of Figures 8 and 10, the reference direction, which is the direction of the perpendicular line N, corresponds to the arrival direction.

[0041] FIG. 11 is a diagram illustrating a method for calculating the incident azimuth angle. In the example of FIG. 11 , the coordinates of the first conductive portion 11 and the second conductive portion 12 are defined with the damage position P of the first conductive portion 11 as the center. In this example, if the coordinate value of the X coordinate of the damage position of the second conductive portion 12 is equal to or greater than the coordinate value of the x coordinate of the damage position of the first conductive portion 11, for example, in the case of damage position E of the second conductive portion 12, the X coordinate (X7) is equal to (7) and the x coordinate (x4) is equal to (4). Since the coordinate value of the X coordinate is greater than the coordinate value of the x coordinate, the incident azimuth angle can be calculated as follows: When the reference azimuth angle is equal to or greater than α, the incident azimuth angle is "reference azimuth angle - α." For example, when the reference azimuth angle is 90 degrees (azimuth: east) and α is 45 degrees, the incident azimuth angle is 45 degrees (azimuth: northeast). Furthermore, when the reference azimuth angle is smaller than α, the arrival azimuth angle is 360 - (α - reference azimuth angle). For example, when the reference azimuth angle is 0 degrees (azimuth: north) and α is 45 degrees, the arrival azimuth angle is 315 degrees (azimuth: northwest).

[0042] On the other hand, if the coordinate value of the X coordinate of the damaged position in the second conductive part 12 is smaller than the coordinate value of the x coordinate of the damaged position in the first conductive part 11, for example, in the case of damaged position F in the second conductive part 12, the X coordinate (X1) is the X coordinate value (1) and the x coordinate (x4) is the x coordinate value (4). Since the coordinate value of the X coordinate is smaller than the coordinate value of the x coordinate, the incident azimuth angle can be calculated as follows: When the reference azimuth angle + α < 360, the incident azimuth angle is "reference azimuth angle + α." For example, when the reference azimuth angle is 0 degrees (azimuth: north) and α is 45 degrees, the incident azimuth angle is 45 degrees (azimuth: northeast). When the reference azimuth angle + α ≧ 360, the incident azimuth angle is "reference azimuth angle + α - 360." For example, when the reference azimuth angle is 315 degrees (azimuth: northwest) and α is 45 degrees, the incoming azimuth angle is 0 degrees (azimuth: north).

[0043] The size calculation unit 307 is a program that calculates the size of the damaged object or the flying object. The size calculation unit 307 can calculate the size of the damaged object or the flying object based on the number of first conductive materials and / or the number of second conductive materials whose current has been interrupted due to damage.

[0044] More specifically, the size calculation unit 307 calculates the number of first conductive materials whose current has been interrupted due to damage, based on the number of times the first current interruption detection unit 21 receives an interruption detection signal within a predetermined period of time. The predetermined period may be, for example, several seconds. Similarly, the size calculation unit 307 calculates the number of damaged second conductive materials based on the number of times the second current interruption detection signal 22 receives an interruption detection signal within the predetermined period of time. The size calculation unit 307 then calculates the size of the damaged or incoming object based on the calculated number of first conductive materials and / or the calculated number of second conductive materials. For example, the size calculation unit 307 can refer to a data table that associates the number of first conductive materials and second conductive materials whose current has been interrupted due to damage with the size of the damaged or incoming object, and identify the size of the object corresponding to the calculated number of first conductive materials and second conductive materials.

[0045] Fig. 12 is a flowchart showing the processing executed by the arithmetic device 30 of the direction identification device 1. In step S1, a damage position identification processing shown in Fig. 13 is executed. Fig. 13 is a diagram showing an example of the damage position identification processing.

[0046] In step S11 of Fig. 13, the detection signal determination unit 301 determines whether or not an interruption of the current through the first conductive material in the first direction has been detected. If it is determined that an interruption of the current through the first conductive material in the first direction has not been detected (NO), the process of step S11 is executed again. On the other hand, if it is determined that an interruption of the current through the first conductive material in the first direction has been detected (YES), the process branches to step S12.

[0047] In step S12, the detection signal determination unit 301 determines whether or not an interruption of the current through the first conductive material in the other direction has been detected. If it is determined that an interruption of the current through the first conductive material in the other direction has not been detected (NO), the process returns to step S11. On the other hand, if it is determined that an interruption of the current through the first conductive material in the other direction has been detected (YES), the process branches to step S13.

[0048] In step S13, the damage position identification unit 302 identifies the position where the first conductive material in the first direction in which the current interruption was detected intersects with the first conductive material in the other direction in which the current interruption was detected as the damage position of the first conductive part 11.

[0049] In step S14, the detection signal determination unit 301 determines whether or not an interruption of the current through the second conductive material in the second direction has been detected. If it is determined that an interruption of the current through the second conductive material in the second direction has not been detected (NO), the process returns to step S11. On the other hand, if it is determined that an interruption of the current through the second conductive material in the second direction has been detected (YES), the process branches to step S15.

[0050] In step S15, the detection signal determination unit 301 determines whether or not an interruption of the current through the second conductive material in the other direction has been detected. If it is determined that an interruption of the current through the second conductive material in the other direction has not been detected (NO), the process returns to step S11. On the other hand, if it is determined that an interruption of the current through the second conductive material in the other direction has been detected (YES), the process branches to step S16.

[0051] In step S16, the damage position identification unit 302 identifies the position where the second conductive material in the second direction in which the current interruption was detected intersects with the second conductive material in the other direction in which the current interruption was detected as the damage position of the second conductive part 12.

[0052] In step S2 of Figure 12, the direction calculation unit 303 calculates the direction of damage caused by the object that damaged the first conductive part 11 and the second conductive part 12 or the direction of arrival of the flying object based on the damage position of the first conductive part 11 and the damage position of the second conductive part 12 identified by the damage position identification unit 302 and the predetermined distance L between the first conductive part 11 and the second conductive part 12.

[0053] In step S3, the speed calculation unit 304 calculates the speed of the object that damaged the first conductive part 11 and the second conductive part 12 based on the time corresponding to the difference between the time when the current in the first conductive part 11 is interrupted and the time when the current in the second conductive part 12 is interrupted and the distance D traveled by the object between the first conductive part 11 and the second conductive part 12.

[0054] In step S4, the reference azimuth angle calculation unit 305 calculates a reference azimuth angle. In step S5, the arrival azimuth angle information calculation unit 306 calculates arrival azimuth angle information based on the reference azimuth angle calculated by the reference azimuth angle calculation unit 305 and the object arrival angle that defines the arrival direction calculated by the direction calculation unit 303.

[0055] In step S6, the size calculation unit 307 calculates the size of the object based on the number of first conductive materials and / or the number of second conductive materials for which the current has been interrupted, and the processing of FIG. 12 ends.

[0056] In the above-described embodiment, the damage location identification unit 302 identifies the damage location of the first conductive portion 11 and the damage location of the second conductive portion 12. Specifically, when a current interruption is detected in a current-carrying first conductive material among the plurality of first conductive materials arranged in a first direction and a current interruption is detected in a current-carrying first conductive material among the plurality of first conductive materials arranged in another direction, the damage location identification unit 302 identifies the intersection position of the two first conductive materials where the current is interrupted as the damage location of the first conductive portion 11. When a current interruption is detected in a current-carrying second conductive material among the plurality of second conductive materials arranged in a second direction and a current interruption is detected in a current-carrying second conductive material among the plurality of second conductive materials arranged in the other direction, the damage location identification unit 302 identifies the intersection position of the two second conductive materials where the current is interrupted as the damage location of the second conductive portion.

[0057] Then, the direction calculation unit 303 calculates the damage direction or the incoming direction based on the damage position of the first conductive part 11 and the damage position of the second conductive part 12 identified by the damage position identification unit 302 and the predetermined distance L between the first conductive part 11 and the second conductive part 12. By employing this configuration, it is possible to identify the damage direction caused by the damaged object or the incoming direction of the incoming object.

[0058] Furthermore, in the above-described embodiment, the speed calculation unit 304 calculates the speed of the object based on the time corresponding to the difference between the time when the current to the energized first conductive material is interrupted and the time when the current to the energized second conductive material is interrupted, and the distance D traveled by the object between the first conductive material and the second conductive material. This makes it possible to determine the speed of the damaged object or the flying object.

[0059] Furthermore, in the above-described embodiment, the reference azimuth angle calculation unit 305 calculates a reference azimuth angle, which is an azimuth angle indicating an orientation based on the surface of the first conductive portion 11 or the second conductive portion 12. Then, the arrival azimuth angle information calculation unit 306 calculates arrival azimuth information including at least one of the arrival azimuth and arrival azimuth angle of the object, based on the reference azimuth angle calculated by the reference azimuth angle calculation unit 305 and the object's arrival angle that defines the direction calculated by the direction calculation unit 303. This makes it possible to determine the orientation of the arriving object.

[0060] Next, another embodiment will be described with reference to Fig. 14. In another embodiment, the program 300 may further include a damage order identification unit 308. The damage order identification unit 308 identifies the damage order, which is the order in which the first conductive portion 11 and the second conductive portion 12 were damaged, based on the time when the current to the current-carrying first conductive material was interrupted and the time when the current to the current-carrying second conductive material was interrupted. In this case, the conductive portion in which the current was interrupted earlier is located on the side from which the object enters, and the conductive portion in which the current was interrupted later is located on the opposite side from which the object enters.

[0061] Then, the direction calculation unit 303 calculates the direction of damage caused by the object that damaged the first conductive part 11 and the second conductive part 12 or the direction of arrival of the flying object based on the damage positions of the first conductive part 11 and the second conductive part 12 identified by the damage position identification unit 302, the damage order identified by the damage order identification unit 308, and the predetermined distance L between the first conductive part 11 and the second conductive part 12. In this case, the direction calculation unit 303 can calculate the damage direction or the direction of arrival of the flying object based on the damage position of the conductive part located on the opposite side to the side from which the object enters, i.e., the conductive part that is later in the damage order. By employing this configuration, the direction of damage caused by the object or the direction of arrival of the flying object can be calculated even if the second conductive part 12 is not located on the side from which the object enters.

[0062] In the above example, the program can be stored and provided to a computer using various types of non-transitory computer-readable media. Non-transitory computer-readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), CD-ROMs, CD-Rs, CD-RWs, and semiconductor memories (e.g., mask ROMs, programmable ROMs (PROMs), erasable PROMs (EPROMs), flash ROMs, and RAMs). The program may also be provided to a computer by various types of transitory computer-readable media. Examples of transitory computer-readable media include electrical signals, optical signals, and electromagnetic waves. The transitory computer-readable media can provide the program to a computer via a wired communication path such as an electric wire or optical fiber, or via a wireless communication path.

[0063] The present disclosure is not limited to the above-described embodiment and may be modified as appropriate without departing from the spirit of the present disclosure. For example, in the above-described embodiment, a single device, the direction identification device 1, constitutes the direction identification system and the incoming direction identification system. However, in other embodiments, a system in which multiple devices process the functions of the direction identification device 1 in a distributed manner may be employed. In this case, for example, another device that does not include the first conductive portion 11, the second conductive portion 12, the first current interruption detection unit 21, and the second current interruption detection unit 22 may execute the functions of the computing device 30.

[0064] This application claims priority based on Japanese Patent Application No. 2024-26662, filed February 26, 2024, the disclosure of which is incorporated herein by reference in its entirety.

[0065] The present disclosure is applicable to, for example, a direction identification system, a direction identification device, and the like.

[0066] 1: Direction identification system, direction identification device 10: Power supply unit 11: First conductive part 12: Second conductive part 21: First current interruption detection unit 22: Second current interruption detection unit 30: Computing unit 40: Communication interface 50: Storage device 111b: First conductive material 112c: First conductive material 121d: Second conductive material 122d: Second conductive material 300: Program 301: Detection signal determination unit 302: Damage position identification unit 303: Direction calculation unit 304: Speed ​​calculation unit 305: Reference azimuth angle calculation unit 306: Arrival azimuth information calculation unit 307: Magnitude calculation unit 308: Damage order identification unit

Claims

1. A first conductive part comprising a plurality of intersecting first conductive materials; a second conductive part comprising a plurality of intersecting second conductive materials and arranged to face the first conductive part at a predetermined distance; a power supply part supplying current to the conductive materials of the first conductive part and the conductive materials of the second conductive part; a first current interruption detection part detecting a current interruption for each of the plurality of first conductive materials energized by the current supplied from the power supply part; a second current interruption detection part detecting a current interruption for each of the plurality of second conductive materials energized by the current supplied from the power supply part; a damage position identification part identifying a damage position in the first conductive part and a damage position in the second conductive part; and a direction calculation part calculating a damage direction based on the damage position in the first conductive part and the damage position in the second conductive part identified by the damage position identification part and the predetermined distance between the first conductive part and the second conductive part, a direction identification system, wherein when the first current interruption detection unit detects a current interruption in a current-carrying first conductive material among the plurality of first conductive materials that is arranged in a first direction and a current interruption in a current-carrying first conductive material among the plurality of first conductive materials that is arranged at a predetermined angle with respect to the first direction, the damage location identification unit identifies a position where the two first conductive materials intersect at which the current has been interrupted as a first conductive portion damage location; and when the second current interruption detection unit detects a current interruption in a current-carrying second conductive material among the plurality of second conductive materials that is arranged in a second direction and a current interruption in a current-carrying second conductive material among the plurality of second conductive materials that is arranged at a predetermined angle with respect to the second direction, the damage location identification unit identifies a position where the two second conductive materials intersect at which the current has been interrupted as a second conductive portion damage location.

2. The direction identification system according to claim 1, further comprising a damage order identification unit that identifies a damage order, which is the order in which the first conductive portion and the second conductive portion were damaged, based on the time when the current to the current-carrying first conductive material was interrupted and the time when the current to the current-carrying second conductive material was interrupted; and the direction calculation unit calculates the damage direction based on the first conductive portion damage position and the second conductive portion damage position identified by the damage position identification unit, the damage order identified by the damage order identification unit, and a predetermined distance between the first conductive portion and the second conductive portion.

3. An incoming direction identification system comprising: a speed calculation unit that, when the first conductive part and the second conductive part provided in the direction identification system of claim 1 are damaged by an incoming object, calculates the speed of the object based on the time corresponding to the difference between the time when the current to the energized first conductive material is interrupted and the time when the current to the energized second conductive material is interrupted, and the distance traveled by the object between the first conductive part and the second conductive part.

4. A direction identification system as described in claim 1 or 2, further comprising: a reference azimuth angle calculation unit that calculates a reference azimuth angle, which is an azimuth angle indicating an orientation based on the surface of the first conductive part or the second conductive part; and an arrival azimuth information calculation unit that calculates arrival azimuth information including at least one of the arrival azimuth and arrival azimuth angle of the object, based on the reference azimuth angle calculated by the reference azimuth angle calculation unit and the arrival angle of the object that defines the damage direction calculated by the direction calculation unit.

5. A direction identification program, which causes a computer to: determine whether a current interruption has been detected in a current-carrying first conductive material that is arranged in a first direction among a plurality of first conductive materials that are arranged to intersect with each other, and whether a current interruption has been detected in a current-carrying first conductive material that is arranged at a predetermined angle with respect to the first direction among the plurality of first conductive materials; when it is determined that a current interruption has been detected in a current-carrying first conductive material that is arranged in the first direction and a current interruption in a current-carrying first conductive material that is arranged at a predetermined angle with respect to the first direction, identifying the intersection position of the two first conductive materials where the current has been interrupted as a first conductive portion damage position; and determine whether a current interruption has been detected in a current-carrying second conductive material that is arranged in a second direction among a plurality of second conductive materials that are arranged to intersect with each other, and whether a current interruption has been detected in a current-carrying second conductive material that is arranged at a predetermined angle with respect to the second direction among the plurality of second conductive materials. a step of identifying a position where the two second conductive materials where the current is interrupted intersect as a second conductive portion damaged position when it is determined that an interruption of current in a second conductive material that is arranged in the second direction and is conducting and an interruption of current in a second conductive material that is arranged at a predetermined angle with respect to the second direction have been detected; and a step of calculating a damage direction based on the identified first conductive portion damaged position and the second conductive portion damaged position and a predetermined distance between the first conductive portion and the second conductive portion that are arranged so as to face each other with a gap between them.

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