JP2018087673A - Antenna for wireless primer detonator, wireless primer detonator, and wireless detonation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna for a wireless primer detonator, a wireless primer detonator including the antenna for a wireless primer detonator, and a wireless detonation system using the wireless primer detonator that can efficiently receive ignition energy or energy for driving an electronic circuit and control signals without being affected by the positional relation between an operating-side antenna and an antenna for a wireless primer detonator.SOLUTION: In an antenna 11 for a wireless primer detonator of the present invention, when the axial direction of a soft magnetic core is defined as a Z-axis, a direction orthogonal to the Z-axis is defined as an X-axis, and a direction orthogonal to both the Z-axis and the X-axis is defined as a Y-axis, a Z-axis antenna 11Z formed by a Z-axis coil made of a conductive wire wound around a soft magnetic core and the Z-axis and the soft magnetic core, an X-axis antenna 11X formed by an X-axis coil made of a conductive wire wound around a soft magnetic core and the X-axis and the soft magnetic core, and a Y-axis antenna 11Y formed by Y-axis coil made of a conductive wire wound around a soft magnetic core and the Y-axis and the soft magnetic core are disposed in proximity of each other.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a wireless detonator antenna that is an antenna attached to a wireless detonator used for tunnel excavation or the like, a wireless detonator equipped with the wireless detonator antenna, and a wireless detonator using the wireless detonator About the system.

  Conventionally, in a blasting operation at a tunnel excavation site or the like, a plurality of charge holes having a diameter of several [cm] and a depth of several [m], for example, are drilled in the face of the excavation face. Then, each detonation hole is loaded with a wireless detonator and explosive that can be detonated wirelessly, and a control signal is transmitted wirelessly from a remote location away from the face using the detonator and the operating antenna. Various blasting methods for blasting are disclosed. The radio detonator has a radio detonator antenna. By using a magnetic field or electric field generated around the operation side antenna with the radio detonator antenna, the radio detonator is radiated in a wireless manner. In addition to receiving circuit driving energy, a wireless control signal (including an ID request signal, a power storage request signal, a power storage status confirmation signal, a detonation execution signal, etc.) is received and detonated. Therefore, the radio detonator antenna is required to be capable of receiving the energy (ignition energy, electronic circuit driving energy, etc.) and can efficiently receive a radio control signal. Is required.

  For example, Patent Document 1 describes a wireless detonator having a detonation-side antenna (corresponding to a radio detonator antenna) in which a coil is wound in a cylindrical shape. The initiation-side antenna is arranged in the charging hole with the cylindrical axial direction set to a direction along the axial direction of the charging hole.

  Patent Document 2 discloses a receiving coil (corresponding to an antenna for a wireless detonator) having a conductive wire wound around the axis when the longitudinal direction of the receiving detonator (corresponding to a wireless detonator) is used as an axis. A receiving detonator is described.

  Patent Document 3 describes a wireless detonator having a receiving coil (corresponding to a wireless detonator antenna) that receives AC magnetic field energy transmitted wirelessly from an operation-side antenna of a detonator.

  Patent Document 4 discloses a radio detonator unit (corresponding to a radio detonator) equipped with a receiving coil (corresponding to a radio detonator antenna) that receives AC magnetic field energy transmitted wirelessly from an operation side antenna of a detonator. Is described.

JP 2014-134298 A JP-A-8-219700 JP 2001-330400 A JP 2001-153598 A

  For example, as shown in FIG. 5, the operation-side antenna 60 wound a plurality of times along the inner wall of the tunnel is stretched on the inner wall of the tunnel at a predetermined distance L1 from the face surface 41 and wound along the inner wall of the tunnel. It is formed by turning. The direction of the magnetic field generated around the operation-side antenna 60 is a direction substantially perpendicular to the facet 41 in the vicinity of the central portion of the wound operation-side antenna 60, as shown by a one-dot chain line in FIG. In the case of the Z-axis direction). However, the direction of the magnetic field in the vicinity of the edge away from the central portion of the wound operation-side antenna 60 is a direction that is greatly curved with respect to the direction orthogonal to the facet surface 41. That is, in the example of FIG. 5, at the charging position P2b that is near the center of the wound operation-side antenna 60, the component in the direction of the magnetic field is almost only in the Z-axis direction. As described above, the energy can be efficiently received by the antenna around which the conductive wire is wound. However, in the example of FIG. 5, for example, at the charging position P3c, which is a position near the edge of the wound operation-side antenna 60, the direction of the magnetic field is the component in the X-axis direction and the component in the Y-axis direction. And the component in the Z-axis direction, and the component in the Z-axis direction may be smaller than the component in the X-axis direction and the component in the Y-axis direction. Therefore, for example, at the charging position P3c, the antenna in which the conductive wire is wound around the Z-axis direction cannot receive the energy efficiently, and the wireless control signal cannot be received efficiently. There is sex.

  In the inventions described in Patent Document 1 and Patent Document 2, the conductive wire of the antenna for the wireless detonator is wound in a cylindrical shape, and the axial direction of the cylinder is in the axial direction of the charge hole (that is, the Z-axis direction in FIG. 5). It is set in the direction along and is arranged in the charge hole. Therefore, in the radio detonator antenna, the energy can be efficiently received and the radio control signal can be efficiently received in the vicinity of the central portion of the wound operation-side antenna. In addition, the edge of the operating antenna may not be able to receive the energy efficiently and may not be able to efficiently receive a wireless control signal.

  In addition, in the inventions described in Patent Document 3 and Patent Document 4, since there is no description about the winding direction of the conductive wire in the receiving coil that is the antenna for the wireless detonator, the conductive wire is the same as in Patent Document 1 and Patent Document 2. It is considered that the antenna is wound in a cylindrical shape. Therefore, similarly to Patent Document 1 and Patent Document 2, in the vicinity of the central portion of the wound operation-side antenna, the energy can be efficiently received and a wireless control signal can be efficiently received. The edge of the operating antenna may not be able to receive the energy efficiently and may not be able to receive a wireless control signal efficiently.

  The present invention was devised in view of such points, and is more efficient for ignition energy and electronic circuit driving energy regardless of the positional relationship between the operation side antenna and the radio detonator antenna. It is an object of the present invention to provide a wireless detonator antenna capable of receiving a control signal, a wireless detonator equipped with the wireless detonator antenna, and a wireless detonation system using the wireless detonator.

  In order to solve the above problems, the antenna for a radio detonator, the radio detonator, and the radio detonation system according to the present invention take the following means. First, a first invention of the present invention is a radio detonator antenna that is an antenna that receives ignition energy, electronic circuit driving energy, and a control signal in a wireless manner. And a soft magnetic core formed of a soft magnetic material, a Z-axis coil, an X-axis coil, and a Y-axis coil, wherein the axis of the soft magnetic core is a Z-axis, and the Z-axis When the axis orthogonal to the axis is the X axis and the axis orthogonal to both the Z axis and the X axis is the Y axis, a conductive wire is wound around the Z axis and around the soft magnetic core. The Z-axis coil, or the Z-axis coil in which a conductive wire is wound around the soft magnetic core through a Z-axis bobbin formed around the Z-axis and made of a non-magnetic material. A Z-axis antenna is formed by the soft magnetic core, and the X-axis coil in which a conductive wire is wound around the X axis and around the soft magnetic core, or Before the conductive wire is wound around the soft magnetic core around the X axis and through the X axis bobbin formed of a non-magnetic material An X-axis antenna is formed by the X-axis coil and the soft magnetic core, and a conductive wire is wound around the Y axis and around the soft magnetic core. A coil or a Y-axis coil in which a conductive wire is wound around the soft magnetic core via a Y-axis bobbin formed around the Y-axis and a non-magnetic material; and the soft magnetic material A wireless detonator antenna, wherein a Y-axis antenna is formed by a core, and the Z-axis antenna, the X-axis antenna, and the Y-axis antenna are arranged close to each other. .

  Next, a second invention of the present invention is the radio detonator antenna according to the first invention, wherein the Z-axis antenna, the X-axis antenna, and the Y-axis antenna are the Z-axis antenna. It is an antenna for a radio detonator and arranged adjacent to each other in a straight line along the axis direction.

  Next, a third invention of the present invention is the radio detonator antenna according to the second invention, wherein the Z-axis antenna is sandwiched between the X-axis antenna and the Y-axis antenna. This is a radio detonator antenna placed at a position.

  Next, a fourth invention of the present invention is the radio detonator antenna according to any one of the first to third inventions, wherein the soft magnetic core is formed in a cylindrical shape. It is a radio detonator antenna.

  Next, according to a fifth aspect of the present invention, there is provided a wireless detonator antenna according to any one of the first to fourth aspects of the present invention, and an ignition portion connected to the wireless detonator antenna. A wireless detonator having a control unit that performs the operation and the initiation unit connected to the control unit.

  Next, a sixth invention of the present invention includes a wireless detonator according to the fifth invention, an explosive loaded in the charge hole to which the wireless detonator is attached and drilled at the bombed location. An operation-side antenna stretched in the vicinity of the charging hole, and the ignition energy and the electronic circuit driven in a wireless manner via the operation-side antenna disposed at a remote position away from the charging hole And a detonator operating device for transferring the control signal and the control signal to the wireless detonator through the wireless detonator antenna.

  Next, a seventh invention of the present invention is the wireless detonation system according to the sixth invention, wherein the radio detonator antenna in the radio detonator is cylindrical, and the radio detonator antenna An inner diameter is formed to be larger than an outer diameter of at least one of the initiation part and the control part of the wireless detonator, and at least one of the initiation part and the control part of the wireless detonator is the wireless detonator This is a wireless detonation system that is inserted into the antenna and integrated with the radio detonator antenna and loaded in the charge hole.

  According to the first invention, the Z-axis antenna that can efficiently receive the energy with respect to the magnetic field component in the Z-axis direction in FIG. 5 and can efficiently receive a wireless control signal, and FIG. The X-axis antenna that can efficiently receive the energy with respect to the magnetic field component in the X-axis direction and the wireless control signal efficiently, and the magnetic field component in the Y-axis direction in FIG. A wireless detonator antenna can be configured in which three antennas, the Y-axis antenna that can efficiently receive the energy and can efficiently receive a wireless control signal, are arranged. As a result, it is not necessary to configure a different radio detonator antenna for each position on the face, and it is a charge hole drilled at any position on the face by one type of radio detonator antenna. However, it is possible to realize a radio detonator antenna that can receive the energy more efficiently and can efficiently receive a radio control signal.

  According to the second aspect of the invention, the overall shape of the radio detonator antenna can be made convenient when, for example, the radio detonator antenna is loaded into a charge hole drilled in the Z-axis direction. it can.

  According to the third invention, in the three antennas arranged along the Z-axis direction, the Z-axis antenna is arranged at the center. As a result of various experiments by the inventors, it has been found that the energy and control signal can be received more efficiently when the Z-axis antenna is arranged in the center than when the Z-axis antenna is arranged at the end. confirmed. Therefore, it is possible to realize a radio detonator antenna capable of receiving the energy and the control signal more efficiently even if the charging hole is drilled at any position on the face.

  According to the fourth invention, the X-axis antenna conductive wire and the Y-axis antenna conductive wire are wound so as to avoid the opening of the hollow portion of the cylindrical core, and the three cores are linearly formed. If it arrange | positions in, the hollow part of three cores is formed as a continuous through-hole. For example, if a control unit, a detonation unit, or the like of a wireless detonator is inserted into the through hole, a space-efficient wireless detonator can be configured, which is convenient.

  According to the fifth aspect of the present invention, a radio detonator antenna capable of receiving the energy more efficiently and receiving a radio control signal more efficiently at each charge hole cut in the face. A wireless detonator equipped with can be realized.

  According to the sixth aspect of the present invention, a radio detonator antenna for a radio detonator capable of receiving the energy more efficiently and receiving a radio control signal more efficiently at each charge hole drilled in the facet. It is possible to realize a wireless detonation system using a radio detonator having the following.

  According to the seventh aspect of the present invention, an explosive is loaded into the cylindrical radio detonator antenna by inserting at least one of the detonator and controller of the radio detonator into the interior of the charge hole. It is possible to improve detonation efficiency.

It is a perspective view explaining the whole structure of the radio detonation system for blasting the face in a tunnel excavation site. It is a figure explaining the state which loaded the explosive unit in the charge hole drilled in the face. It is a figure explaining the example of the direction of the magnetic field generated around the operation side antenna. It is a figure explaining the relationship between the position of each charge hole shown in FIG. 5, and the position of the operation side antenna. It is a figure explaining the example of the magnitude | size of the magnetic field of the position of each charge hole and the Z-axis direction in each position, an X-axis direction, and a Y-axis direction. It is a perspective view explaining the whole structure of a radio detonator. It is the figure which looked at the antenna for radio detonators from the Z-axis direction. It is sectional drawing explaining the example of the radio detonator of 1st Embodiment by which the control part and the detonator were inserted in the antenna for radio detonators, and the radio detonator was comprised. It is a figure which shows the example of the radio detonator of 2nd Embodiment which changed arrangement | positioning of the X-axis antenna, the Y-axis antenna, and the Z-axis antenna with respect to the example of FIG. It is a figure which shows the example of the radio detonator of 3rd Embodiment which changed arrangement | positioning of the antenna for X axes, the antenna for Y axes, and the antenna for Z axes with respect to the example of FIG. It is a figure which shows the example of the radio detonator of 4th Embodiment which changed the shape and arrangement position of the radio detonator with respect to the example of FIG. It is a figure explaining the example of the external appearance of the antenna for radio detonators which arranged the antenna for Z axes in the center. It is a figure explaining the example of the external appearance of the antenna for radio detonators with the Z-axis antenna arranged at the end (left end in the example of FIG. 13). It is a perspective view of the Z-axis antenna in which a conductive wire is wound around the Z-axis. It is a perspective view of the X-axis antenna in which a conductive wire is wound around the X-axis. It is a perspective view of the antenna for Y axes by which the conductive wire was wound around the Y axis. It is a perspective view of the example of the antenna for X axes by which the conductive wire was wound around the X axis through the bobbin. FIG. 18 is a perspective view of an example of an X-axis antenna using a bobbin having a different shape from that of FIG. 17. It is a perspective view of the example of the antenna for Y-axis by which the conductive wire was wound around the Y-axis through the bobbin. FIG. 20 is a perspective view of an example of a Y-axis antenna using a bobbin having a different shape from that of FIG. 19. It is a perspective view of the example of the antenna for Z axes by which the conductive wire was wound around the Z axis via the bobbin. FIG. 21 is a perspective view showing an example of a wireless detonator using the X-axis antenna shown in FIG. 18, the Y-axis antenna shown in FIG. 20, and the Z-axis antenna shown in FIG. It is a circuit block diagram explaining the structure of a radio detonator.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings, and a tunnel excavation site will be described as an example. In addition, when the X axis, the Y axis, and the Z axis are described, the X axis, the Y axis, and the Z axis are orthogonal to each other, the Y axis direction indicates a vertically upward direction, and the Z axis direction is a tunnel excavating direction. The axial direction of the charge hole 40 facing in the opposite direction to the (horizontal direction) is shown.

● [Overall configuration of wireless detonation system 1 (FIG. 1) and loading state of explosive unit 20 in charge hole 40 (FIG. 2)]
As shown in FIG. 1, the wireless detonation system 1 is separated from the explosive unit 20 (see FIG. 2) loaded in the charge hole 40 drilled in the face 41 (the bombed portion) and the charge hole 40. In addition to supplying a current for generating a magnetic field around the operation side antenna to the explosive unit 20 arranged at a remote position, a control signal (for example, an ID request signal, a power storage request signal, a power storage status confirmation signal, and an execution of explosion) And the operation side antenna 60 stretched in the vicinity of the face face 41 (the charge hole).

  The detonator 50 supplies current to the operation side antenna 60 via the blast bus 62 and the auxiliary bus 61 to generate a magnetic field around the operation side antenna 60 and superimpose a control signal. Therefore, the detonator 50 is in a wireless manner via the operation side antenna 60, and the ignition energy, the energy for driving the electronic circuit, and the control signal are transmitted via the radio detonator antenna 11 (see FIG. 2) described later. To the control unit and the detonator constituting the wireless detonator. And the frequency of the electric current which flows into the operation side antenna 60 in order to generate a magnetic field, and the operation frequency which is the frequency of a control signal are set to 100 [KHz] or more and 500 [KHz] or less, for example. If the operation frequency is higher than 500 [KHz], standing waves are likely to be generated in the tunnel, which is not preferable. Further, the detonator 50 receives a wireless response signal from the wireless detonator through the operation side antenna 60, the auxiliary bus 61, and the blasting bus 62. Note that the response frequency, which is the frequency of the response signal from the wireless detonator, is set to 10 [MHz], for example.

  The operation side antenna 60 is stretched along the cave floor 42, the cave side wall 43, and the cave ceiling 44 at a position separated from the face surface 41 by a distance L1 of about 1 [m], for example. A distance L2 from the tip of the blasting bus 62 to the face surface 41 is, for example, about 30 [m]. The distance L3 from the tip of the blast bus 62 to the detonation operating device 50 is, for example, about 70 [m]. An operation side antenna 60 is connected to the detonation operating device 50 via a blasting bus 62 and an auxiliary bus 61. The operation-side antenna 60 and the auxiliary bus 61 are newly stretched every time they are blown up.

  As shown in FIG. 2, the charge hole 40 is a hole drilled to a diameter D1 of about 5 [cm] and a depth D2 of about 2 [m], but is not limited to this value. Absent. As shown in FIG. 2, the explosive unit 20 is loaded in the charge hole 40 and is covered with a container 22 such as clay. The explosive unit 20 includes a parent die 201 and an additional die 202. Note that the parent die 201 is configured by attaching the wireless detonator 10 to the additional die 202. The parent die 201 is an explosive that is the leading explosive when being loaded into the charge hole 40 and has the radio detonator 10 attached thereto. Further, the additional die 202 is an explosive that is appropriately increased or decreased with respect to the parent die 201. The explosive unit 20 is an explosive in a state where only the parent die 201 or a die 202 is added to the parent die 201.

  As shown in FIG. 2, the wireless detonator 10 includes a wireless detonator antenna 11, a controller 12, and a detonator 14. The wireless detonator antenna 11 has a hollow portion extending in the Z-axis direction. For example, the control unit 12 is accommodated in the hollow portion of the wireless detonator antenna 11, and the detonator 14 is partially wireless detonated. The remaining portion of the detonator antenna 11 is housed in the cavity and protrudes from the radio detonator antenna 11. The explosive into which the detonation portion 14 protruding from the wireless detonator antenna 11 is inserted is integrated with the wireless detonator antenna 11 to form a parent die 201 and is loaded in the charge hole 40. The outer diameter of the radio detonator antenna 11 is equal to or smaller than the inner diameter of the charge hole 40. As shown in the examples of FIGS. 11 and 22, the detonation unit 14 and the control unit 12 </ b> A may be arranged outside the wireless detonator antenna.

  The display device 72 displays individual information (for example, an initiation delay time or an identification number) that allows the operator to identify the wireless detonator 10, and is attached to the wireless detonator 10 via the cable 71. . The length of the cable 71 is set to such a length that the display device 72 can reach the outside of the charging hole 40 when the parent die 201 is loaded in the charging hole 40. Therefore, as shown in FIG. 2, the display device 72 is disposed outside the charging hole 40 when the parent die 201 is loaded in the charging hole 40. The cable 71 and the display device 72 may be omitted. In the description of the present embodiment, the example in which the display device 72 is attached to the wireless detonator 10 via the cable 71 has been described. However, the display device 72 may be directly attached to the wireless detonator 10. When the display device is directly attached to the radio detonator, the operator cannot check the display device after loading it in the charge hole, but it must be loaded while checking the display device when loading the charge hole. Can do.

[Direction of the magnetic field generated around the operation-side antenna 60 (FIGS. 3 to 5)]
FIG. 3 is a diagram in which only the operation side antenna 60 is extracted from FIG. In FIG. 3, when a current flows through the operation-side antenna 60 in the direction of the solid line arrow, a magnetic field as shown by a one-dot chain line is generated. When the direction of this magnetic field is used as an axis, the radio detonator antenna 11 receives ignition energy and electronic circuit driving energy most efficiently when a conductive wire is wound around the axis. (In this specification, “ignition energy and electronic circuit driving energy” are described as “the energy”) and a wireless control signal can be received.

  4 is a view of FIG. 3 viewed from the IV direction. With respect to the wound operation side antenna 60, the position of the charging hole of the face surface 41 substantially corresponding to the center is indicated by a charging position P2b. The position corresponding to the edge of the operation side antenna 60 and the upper left position of the charging position P2b is indicated by the charging position P1a, and the position corresponding to the edge of the operation side antenna 60 and the charging position. The upper right position of P2b is indicated by a charging position P1c, and the position corresponding to the edge of the operation side antenna 60 and above the charging position P2b is indicated by a charging position P1b. Further, the position corresponding to the edge of the operation side antenna 60 and to the left of the charge position P2b is indicated by the charge position P2a, and the position corresponding to the edge of the operation side antenna 60 and charged. A position on the right side of the position P2b is indicated by a charging position P2c. The position corresponding to the edge of the operation side antenna 60 and the lower left position of the charge position P2b is indicated by the charge position P3a, and the position corresponding to the edge of the operation side antenna 60 and charged. A lower right position of the position P2b is indicated by a charging position P3c, and a position corresponding to the edge of the operation side antenna 60 and below the charging position P2b is indicated by a charging position P3b.

  FIG. 5 shows magnetic fields (magnetic fields generated around the operation-side antenna 60) at each of the charging positions P1a to P1c, the charging positions P2a to P2c, and the charging positions P3a to P3c of the face 41 shown in FIG. It is a figure which shows the example of a direction and magnitude | size. Since the magnetic field component is only in the Z-axis direction at the charging position P2b corresponding to substantially the center of the operation-side antenna 60, an antenna in which a conductive wire is wound around the Z-axis (in the example of FIG. 6, the Z-axis antenna 11Z). ) Can receive the energy efficiently. However, in the vicinity of the edge of the operation-side antenna 60, the magnitude of the magnetic field in the Z-axis direction decreases, and the magnitude of the magnetic field in the X-axis direction and the magnetic field in the Y-axis direction increases. For example, in the charging position P3c, the magnitude of the magnetic field in the Z-axis direction is smaller than that in the charging position P2b, and the magnitudes of the magnetic field in the X-axis direction and the magnetic field in the Y-axis direction are larger than the magnitude of the magnetic field in the Z-axis direction. In the charging position P1b, the magnitude of the magnetic field in the Z-axis direction is smaller than that in the charging position P2b, and the magnitude of the magnetic field in the Y-axis direction is larger than the magnitude of the magnetic field in the Z-axis direction. Therefore, in the charging positions P1a to P1c, the charging positions P2a, the charging positions P2c, and the charging positions P3a to P3c, which are the positions of the edges of the operation-side antenna 60, an antenna in which a conductive wire is wound around the Z axis. Only with the Z-axis antenna 11Z (in the example of FIG. 6), it is not always possible to efficiently receive the energy and receive a wireless control signal. Therefore, by using the radio detonator antenna 11 described below, even if it is a radio detonator antenna arranged (loaded) in a charge hole drilled at any position on the face 41, A wireless detonator antenna 11 that can receive the energy efficiently and can efficiently receive a wireless control signal is realized.

[Structure of the wireless detonator 10 of the first embodiment (FIGS. 6 to 8)]
FIG. 6 shows an exploded perspective view of the wireless detonator 10 of the first embodiment. The radio detonator 10 includes a radio detonator antenna 11, a controller 12 connected to the radio detonator antenna 11 to ignite the initiator 14, and an initiator 14 connected to the controller 12. Has been. 7 is a diagram of the radio detonator antenna 11 in FIG. 6 as viewed from the direction VII in FIG. The radio detonator antenna 11 includes a Z-axis antenna 11Z, an X-axis antenna 11X, and a Y-axis antenna 11Y formed by three cores (soft magnetic cores) wound with conductive wires. , Are arranged coaxially. The radio detonator antenna 11 includes three Z-axis antennas 11Z, X-axis antennas 11X, and Y-axis antennas 11Y arranged in the Z-axis direction. The shape of the radio detonator antenna 11 is preferably cylindrical, but the outer shape of the outer shape may be any shape as long as the central portion along the axial direction is a hollow cylindrical shape. The contour shape of the outer diameter in the cross section in the axial direction may be any shape such as a circle, an ellipse, or a polygon. The radio detonator antenna 11 and the control unit 12 are connected by a conductive wire 111.

  FIG. 8 shows a cross-sectional view of the wireless detonator 10 in which the controller 12 and the detonator 14 are accommodated in the radio detonator antenna 11. The conductive wire of the X-axis antenna 11X and the conductive wire of the Y-axis antenna 11Y are wound so as to avoid the opening of the hollow portion of the cylindrical core (see FIGS. 15 and 16). The hollow portion of each core is formed as a continuous through hole. An initiation unit 14 is fixed to the control unit 12, and the control unit 12 and the initiation unit 14 are inserted into and fixed to a through hole (hollow part) of the radio detonator antenna 11. In the example of FIG. 8, the control unit 12 is accommodated in the through hole of the radio detonator antenna 11, a part of the detonation unit 14 is accommodated in the through hole of the radio detonator antenna 11, and the tip is the radio detonator. It protrudes from the antenna 11 for use. By inserting the protruding initiation portion 14 into the tip of the explosive, a parent die 201 is formed (see FIG. 2). The shape of the core 115 may be any shape as long as the conductive wire can be wound. However, the core 115 is cylindrical by being loaded into the charge hole and accommodating the control portion and the initiation portion. It is more preferable to use a shape. In the example of FIG. 8, the inner diameter of the through hole (cavity) of the tubular radio detonator antenna 11 is made larger than the outer diameters of the detonator 14 and the controller 12 of the radio detonator 10. The example which accommodated (inserted) a part of initiation part 14 and the control part 12 in the through-hole, and integrated with the antenna 11 for radio detonators was shown. The inner diameter of the through hole of the wireless detonator antenna 11 is formed larger than the outer diameter of at least one of the initiation part 14 and the control part 12, and at least one of the initiation part 14 and the control part 12 is accommodated in the through hole ( It may be configured to be integrated with the wireless detonator antenna 11.

[Structure of radio detonator 10A of the second embodiment (FIG. 9)]
FIG. 9 shows a perspective view of the wireless detonator 10A of the second embodiment. In the wireless detonator 10A of the second embodiment, with respect to the wireless detonator 10 shown in FIG. 8, the control unit 12 is arranged with the longitudinal direction as the Z-axis direction, and X around the Z-axis is arranged around the control unit 12. The axial antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z are arranged so as to be close to each other. Each of the X-axis antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z may be disposed at any antenna position shown in FIG. The wireless detonator 10A is a cavity at the center of the wireless detonator antenna 11A formed by the X-axis antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z arranged so as to be close to each other around the Z axis. The control unit 12 is inserted into the part, and the detonation unit 14 protrudes from the radio detonator antenna 11A. The parent die 201 (see FIG. 2) can be formed by inserting the protruding initiation portion 14 into the tip of the explosive.

[Structure of wireless detonator 10B of the third embodiment (FIG. 10)]
FIG. 10 is a perspective view of a wireless detonator 10B according to the third embodiment. In the wireless detonator 10B of the third embodiment, the control unit 12 is arranged with the longitudinal direction as the Z-axis direction with respect to the wireless detonator 10 shown in FIG. 8, and the through hole (cavity portion) of the Z-axis antenna 11Z is arranged. ), The control unit 12 is inserted, and the detonation unit 14 protrudes from the Z-axis antenna 11Z. The X-axis antenna 11X and the Y-axis antenna 11Y are arranged adjacent to each other along the direction orthogonal to the Z-axis on the side opposite to the initiation portion 14 in the Z-axis antenna 11Z. Therefore, the X-axis antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z are arranged so as to be close to each other. Each of the X-axis antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z may be disposed at any antenna position shown in FIG. Further, the parent die 201 (see FIG. 2) can be formed by inserting the protruding initiation portion 14 into the tip of the explosive. In the example of FIG. 10, an example is shown in which the inner diameter of the through hole (cavity) of the cylindrical Z-axis antenna 11 </ b> Z is formed larger than the outer diameter of each of the detonator 14 and the controller 12 of the wireless detonator. In this example, a part of the initiator 14 and the controller 12 are accommodated (inserted) in the through hole and integrated with the radio detonator antenna. The inner diameter of the through hole of the Z-axis antenna 11Z is formed to be larger than the outer diameter of at least one of the initiation part 14 and the control part 12, and at least one of the initiation part 14 and the control part 12 is accommodated in the through hole (insertion). And may be configured so as to be integrated with the radio detonator antenna.

[Structure of the wireless detonator 10C of the fourth embodiment (FIG. 11)]
FIG. 11 shows a perspective view of a wireless detonator 10C according to the fourth embodiment. In the wireless detonator 10C of the fourth embodiment, the shape and arrangement position of the controller 12A are different from the shape and arrangement position of the controller 10 of the wireless detonator 10 shown in FIG. The control unit 12A has a columnar shape having a diameter equal to or smaller than the diameter of the X-axis antenna 11X, and is attached so that the initiation unit 14 protrudes in the Z-axis direction. In the wireless detonator 10C, the detonator 14, the controller 12A, the X-axis antenna 11X, the Z-axis antenna 11Z, and the Y-axis antenna 11Y are arranged along the Z-axis direction so as to be coaxial. Therefore, the X-axis antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z are arranged so as to be close to each other. Each of the X-axis antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z may be disposed at any antenna position shown in FIG. Further, the parent die 201 (see FIG. 2) can be formed by inserting the protruding initiation portion 14 into the tip of the explosive.

  Note that a radio detonator is configured by combining the X-axis antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z arranged as shown in FIG. 9 with the controller 12A and the initiator 14 shown in FIG. May be. Similarly, a wireless detonator is configured by combining the control unit 12A and the detonator 14 shown in FIG. 11 with the X-axis antenna 11X, the Y-axis antenna 11Y, and the Z-axis antenna 11Z arranged as shown in FIG. May be.

● [Structure of radio detonator antenna 11 (FIGS. 12 and 13)]
The wireless detonator antenna 11 is an antenna that receives ignition energy, electronic circuit driving energy, and control signals in a wireless manner. As shown in FIGS. 12 and 13, the radio detonator antenna 11 has three cores 115 each made of a soft magnetic material and wound with a conductive wire 111. Here, with respect to the three cores 115, the axis in a predetermined direction (in this case, the axis of the core 115) is the Z axis, the axis orthogonal to the Z axis is orthogonal to both the Z axis and the X axis. Set the axis to the Y axis. One of the three cores 115 forms a Z-axis antenna 11Z in which a conductive wire 111 is wound around the Z-axis. In addition, one of the remaining cores 115 forms an X-axis antenna 11X in which a conductive wire 111 is wound around the X-axis. The remaining core 115 forms a Y-axis antenna 11Y in which a conductive wire 111 is wound around the Y-axis. In the example shown in FIGS. 12 and 13, the Z-axis antenna 11Z, the X-axis antenna 11X, and the Y-axis-like antenna 11Y are arranged in any order along the Z-axis direction, and wireless initiation is performed. A detonator antenna 11 is configured. The radio detonator antenna 11 shown in FIGS. 12 and 13 is used in the radio detonator 10 (see FIG. 8) of the first embodiment and the radio detonator 10C (FIG. 11) of the fourth embodiment. Is done.

  The material of the core 115 is a high magnetic permeability soft magnetic material in which the magnetic pole disappears or reverses relatively easily among magnetic materials, such as iron, silicon steel, permalloy, sendust, permendule, ferrite, Amorphous magnetic alloy, nanocrystal magnetic alloy, etc. are preferable, and ferrite is used in this embodiment. The core 115 has a cylindrical shape as shown in FIGS. 6 and 9 to 11, and the conductive wire 111 is wound around the core 115.

  The radio detonator antenna 11 is loaded in the charge hole so that the antenna axis J11 that is the axis of the radio detonator antenna 11 coincides with the axial direction of the charge hole 40 (in this case, the Z-axis direction). The For the magnetic field of the component in the Z-axis direction in FIG. 5, the energy can be efficiently received by the Z-axis antenna 11Z having the Z-axis direction as the winding axis of the conductive wire, and wireless control is performed. A signal can be received efficiently. In addition, with respect to the magnetic field of the component in the X-axis direction in FIG. 5, the X-axis antenna 11X having the X-axis direction as the winding axis of the conductive wire can efficiently receive the energy, and a wireless control signal. Can be received efficiently. Further, with respect to the magnetic field of the component in the Y-axis direction in FIG. 5, the energy can be efficiently received by the Y-axis antenna 11Y having the Y-axis direction as the winding axis of the conductive wire, and a wireless control signal can be received. Can be received efficiently.

  The wireless detonator antenna 11 shown in the examples of FIGS. 12 and 13 includes a Z-axis antenna 11Z, an X-axis antenna 11X, and a Y-axis antenna 11Y that are linearly adjacent to each other along the Z-axis direction. Are arranged as follows. Each of the three cores 115 has a cylindrical shape, and the three cores 115 are arranged so that the respective axes of the cylindrical cores are coaxial, and the radio detonator antenna 11 is provided. Is formed. According to the results of various experiments by the inventors, the Z-axis antenna 11Z is arranged in the center (the Z-axis antenna is arranged at a position sandwiched between the X-axis antenna and the Y-axis antenna). preferable. For example, in the example of FIG. 12, the X-axis antenna 11X is arranged on the left side, the Z-axis antenna 11Z is arranged in the center, and the Y-axis antenna 11Y is arranged on the right side, and this arrangement is expressed as (11X, 11Z, 11Y). ). The arrangement in which the Z-axis antennas 11Z are arranged in the center is rotated by 90 [°] around the Z-axis from the arrangement of (11X, 11Z, 11Y) shown in FIG. 12 and the state shown in FIG. 11Z, 11X). In addition, as shown in the example of FIG. 13, the arrangement of the order of (11Z, 11X, 11Y) in which the Z-axis antenna 11Z is arranged at the left end, and although not shown, (11Z, 11Y, 11X), and the Z-axis The antennas 11Z for use may be arranged in the order of (11X, 11Y, 11Z) and (11Y, 11X, 11Z) arranged at the right end.

[[Z-axis antenna 11Z, X-axis antenna 11X, Y-axis antenna 11Y structure (FIGS. 14 to 16)]
In the following description of each antenna, the axis of the core 115 is described as the Z axis, the axis orthogonal to the Z axis is the X axis, and the axis orthogonal to both the Z axis and the X axis is the Y axis.

  As shown in FIG. 14, the Z-axis antenna 11Z is formed by winding a conductive wire 111 around a cylindrical core 115, and a coil in which the conductive wire 111 is wound around the Z-axis. 117Z (Z-axis coil). Note that the larger the core 115 is, the more efficiently the energy can be received and the wireless control signal can be efficiently received. Therefore, a plurality of cores having a cylindrical shape are connected in the axial direction of the core 115. It may be configured (the same applies to the X-axis antenna and the Y-axis antenna).

  As shown in FIG. 15, the X-axis antenna 11X is formed by winding a conductive wire 111 around a cylindrical core 115, and the conductive wire 111 is wound around the X-axis. 117X (X-axis coil). The conductive wire 111 wound around the X-axis antenna 11X is preferably wound so as to avoid the opening 114 in the hollow portion of the core 115 of the X-axis antenna 11X. That is, it is preferable that the opening 114 in the hollow portion of the core 115 is not covered with the conductive wire 111.

  As shown in FIG. 16, the Y-axis antenna 11Y is formed by winding a conductive wire 11A111 around a cylindrical core 115, and the conductive wire 111 is wound around the Y-axis. 117Y (Y-axis coil). The conductive wire 111 wound around the Y-axis antenna 11Y is preferably wound so as to avoid the opening 114 in the hollow portion of the core 115 of the Y-axis antenna 11Y. That is, it is preferable that the opening 114 in the hollow portion of the core 115 is not covered with the conductive wire 111.

  As shown in FIG. 8 (first embodiment), FIG. 9 (second embodiment), FIG. 10 (third embodiment), and FIG. 11 (fourth embodiment), Z The axial antenna 11Z, the X-axis antenna 11X, and the Y-axis antenna 11Y are arranged close to each other to form the radio detonator antennas 11, 11A, and 11B. The Y-axis antenna 11Y is obtained by turning the X-axis antenna 11X by 90 [°] around the Z-axis.

● [Example of winding a conductive wire around a core via a bobbin (FIGS. 17 to 22)]
As described below, a bobbin capable of accommodating the core 115 is prepared, the conductive wire 111 is wound around the bobbin, the core 115 is accommodated in the bobbin around which the conductive wire is wound, and the X-axis antenna, the Y-axis Each of the antenna and the Z-axis antenna may be configured. By using a bobbin having an outer shape that facilitates winding of the conductive wire 111, the X-axis antenna, the Y-axis antenna, A Z-axis antenna can be configured.

  The bobbin is preferably made of a material having an insulating property for winding a conductive wire, a non-magnetic material, and preferably has an elastic property because it is preferably slightly deformed when the core 115 is accommodated. . Also, in order to make it easier to wind the conductive wire on the bobbin and to make it difficult to shift the position of the wound conductive wire, at least the guide of the same diameter as the diameter of the conductive wire is provided at the winding start position and the winding end position. It is preferable that a groove is formed. When a conductive wire is mechanically wound using a winding device or the like, it is very difficult to wind the conductive wire directly around the core 115. However, the use of the bobbin makes it easy to form the coils 117X, 117Y, and 117Z by mechanically winding the conductive wire using a winding device or the like.

  17 and 18 show examples of X-axis antennas 11XA and 11XB using bobbins 16 and 16B (corresponding to X-axis bobbins). In the example of FIG. 17, the bobbin 16 has a rectangular box shape in which a surface orthogonal to the X axis is omitted. Then, the conductive wire 111 is wound around the outer peripheral surface of the bobbin 16 and around the X axis to form the coil 117X. The X-axis antenna 11XA is formed by accommodating the core 115 in the bobbin 16 in which the coil 117X is formed. In the example of FIG. 18, the shape of the bobbin 16B is different, and the surface perpendicular to the Z-axis of the bobbin 16B (the surface facing the end surface of the core 115) is substantially the same shape as the end surface of the core 115 (this In case it is circular). Similarly to the example of FIG. 17, the core 115 is accommodated in the bobbin 16B in which the conductive wire 111 is wound around the outer periphery of the bobbin 16B and around the X axis to form the coil 117X, thereby the X axis antenna 11XB. Is formed. As described above, the X-axis antennas 11XA and 11XB are formed by the core 115 and the coil 115 in which the conductive wire 111 is wound around the core 115 via the bobbins 16 and 16B (for the X-axis).

  19 and 20 show examples of Y-axis antennas 11YA and 11YB using bobbins 16 and 16B (corresponding to Y-axis bobbins). The Y-axis antenna 11YA shown in FIG. 19 rotates the bobbin 16 around which the conductive wire 111 is wound by 90 [°] around the Z-axis with respect to the X-axis antenna 11XA shown in FIG. Is wound around the Y axis. Similarly, the Y-axis antenna 11YB shown in FIG. 20 rotates the bobbin 16B around which the conductive wire 111 is wound by 90 [°] around the Z-axis with respect to the X-axis antenna 11XB shown in FIG. The coil 117Y is different in that it is wound around the Y axis. As described above, the Y-axis antennas 11YA and 11YB are formed by the core 115 and the coil 115 in which the conductive wire 111 is wound around the core 115 via the bobbins 16 and 16B (for the Y-axis).

  FIG. 21 shows an example of a Z-axis antenna 11ZA using a bobbin 16 (corresponding to a Z-axis bobbin). The bobbin 16 shown in FIG. 21 is the same as the bobbin shown in FIG. 17 except that the bobbin shown in FIG. 17 has a rectangular box shape in which the plane orthogonal to the Z axis is omitted. [°] The point of turning is different. Therefore, the coil 117Z is formed by winding the conductive wire 111 around the outer peripheral surface of the bobbin 16 and around the Z axis. The Z-axis antenna 11ZA is formed by accommodating the core 115 in the bobbin 16 around which the conductive wire 111 is wound. As described above, the Z-axis antenna 11ZA is formed by the core 115 and the coil 115 in which the conductive wire 111 is wound around the core 115 via the bobbin 16 (for Z-axis).

  The X-axis antenna 11XB (or 11XA), the Y-axis antenna 11YB (or 11YA), the Z-axis antenna 11ZA, the control unit 12A, the detonation unit 14, for example (arranged in the same manner as in the example of FIG. 11) As shown in the example 22, the radio detonator 10 </ b> D is configured by being arranged close to each other. In the arrangement shown in the example of FIG. 22, it is more preferable that the Z-axis antenna 11ZA is arranged at the center of the three antennas arranged along the Z-axis direction, but the X-axis antenna and the Y-axis antenna are arranged. And the Z-axis antenna may be arranged at any position. Although not shown, in the radio detonator 10A shown in the example of FIG. 9, the X-axis antenna 11X is changed to the X-axis antenna 11XB (or 11XA), and the Y-axis antenna 11Y is changed to the Y-axis antenna 11YB ( Alternatively, the Z-axis antenna 11Z may be changed to the Z-axis antenna 11ZA. Furthermore, you may change the control part 12 and the initiation part 14 into the control part 12A and the initiation part 14 which are shown in FIG. Although not shown, in the radio detonator shown in the example of FIG. 10, the X-axis antenna 11X is changed to the X-axis antenna 11XB (or 11XA), and the Y-axis antenna 11Y is changed to the Y-axis antenna 11YB (or 11YA). The Z-axis antenna 11Z may be changed to the Z-axis antenna 11ZA. Furthermore, you may change the control part 12 and the initiation part 14 into the control part 12A and the initiation part 14 which are shown in FIG.

[Circuit in control unit 12 and detonation unit 14 of wireless detonator 10 (FIG. 23)]
Next, with reference to the circuit block diagram shown in FIG. 23, the circuits in the control units 12 and 12A and the detonation unit 14 of the radio detonator 10, 10A to 10D will be described. FIG. 23 shows, as an example, respective circuits (block diagram) of the control unit 12 and the detonation unit 14 including the radio detonator antenna 11 shown in FIG.

  The radio detonator antenna 11 includes an X-axis antenna having a coil 117X, a Z-axis antenna having a coil 117Z, and a Y-axis antenna having a coil 117Y. The coil 117X is connected to the triaxial synthesis circuit 124 through a tuning circuit 121 configured with a variable capacitor or the like. Similarly, the coil 117Z is connected to the triaxial synthesis circuit 124 through a tuning circuit 122 configured with a variable capacitor or the like. Similarly, the coil 117Y is connected to the triaxial synthesis circuit 124 via a tuning circuit 123 configured with a variable capacitor or the like. Thus, the conductive wire 111 is connected to each of the tuning circuits 121, 122, and 123 in each of the X-axis antenna coil 117 </ b> X, the Z-axis antenna coil 117 </ b> Z, and the Y-axis antenna coil 117 </ b> Y. ing. Each of the tuning circuits 121, 122, 123 is connected to the triaxial synthesis circuit 124.

  The control unit 12 includes a tuning circuit 121, 122, 123, a three-axis synthesis circuit 124, a CPU 131, a detection / demodulation circuit 125, a regulator 128, a modulation circuit 133, a transmission circuit 134, an ID storage device 132, and an electronic circuit driving power storage device 127. The detonation switch circuit 138, the rectifier circuit 126, and the like. Note that each of the tuning circuits 121, 122, and 123 is configured by a variable capacitor for adjusting the resonance frequency of the corresponding coil 117X, coil 117Z, and coil 117Y.

  The three-axis synthesis circuit 124 synthesizes driving energy, control signals, and initiation signals of the initiation-side electronic circuit input from the coils 117X, 117Z, and 117Y via the tuning circuits 121, 122, and 123, and the path 151 and Output to the path 152. The route 151 is a route for taking in the received control signal and initiation signal, and the route 152 is a route for rectifying, storing, and making a constant voltage of the received energy. Then, wireless control signals (including an ID request signal, a storage request signal, a storage status confirmation signal, etc.) and an initiation signal received via the path 151 and the detection / demodulation circuit 125 are captured by the CPU 131, and the path 152 and The energy passing through the regulator 128 (constant voltage circuit) is used as a power source for an electronic circuit such as the CPU 131 and is stored in the electronic circuit driving power storage device 127. Further, when the CPU 131 transmits a radio signal, the triaxial synthesis circuit 124 transmits a signal transmitted from the CPU 131 on the path 153 via the modulation circuit 133 and the transmission circuit 134 based on the control signal 154 from the CPU 131, and a tuning circuit. An X-axis antenna coil 117X is connected through 121, a Z-axis antenna coil 117Z through a tuning circuit 122, and a Y-axis antenna coil 117Y through a tuning circuit 123. The route 153 is a route for transmitting a response signal from the wireless detonator to the operation side antenna. Then, the CPU 131 transmits a response signal from the path 153 and the wireless detonator antenna 11.

  Identification information unique to the wireless detonator 10 is stored in the ID storage device 132. When receiving the ID request signal (control signal), the CPU 131 transmits a response signal including identification information read from the ID storage device 132. Although an example in which the ID storage device 132 is configured separately from the CPU 131 is shown here, the present invention is not limited to this, and the ID storage device 132 may be built in the CPU 131.

  When the CPU 131 receives the detonation execution signal (control signal), the control signal 156 controls the detonation switch circuit 138 from the open state to the short-circuit state to thereby store the energy stored in the electronic circuit driving power storage device 127 (detonation). The energy for driving the side electronic circuit) is output to the ignition circuit 141 to perform the initiation.

  The initiation unit 14 includes an ignition circuit 141, an ignition ball 142, an initiator 143, an accessory agent 144, and the like. When the ignition switch circuit 138 is short-circuited, the ignition circuit 141 is supplied with electric power (ignition energy) from the electronic circuit driving power storage device 127 and the ignition ball 142 is ignited. When the ignition ball 142 is ignited, the explosive 143 and the accessory 144 are ignited, and the explosive portion 14 is ignited. When the initiation part 14 is ignited, the parent die 201 shown in FIG. 2 is initiated.

● [Effects of the present invention]
In the wireless detonation system 1 described in the present embodiment, the operation frequency is set to 100 [KHz] to 500 [KHz]. The wireless detonator antenna 11 of the wireless detonator can efficiently receive the energy and can efficiently receive the wireless control signal and the detonation signal, so that the operation-side antenna 60 is wound once. Or it can be made several times. Then, by supplying a current of the operation frequency to the operation side antenna 60, the controller 12 of the wireless detonator 10 is supplied with power and ignition energy is stored. The power supplied to the operation-side antenna 60 for power feeding and power storage to the control unit 12 can be performed with a relatively small power of about several tens [W] to several hundreds [W]. Further, the wireless detonator is controlled by a control signal (including an ID request signal, a storage request signal, a storage status confirmation signal, etc.) and an initiation signal superimposed on the current.

  Further, by setting the frequency of the signal responding from the radio detonator 10 to 1 [MHz] or more and 10 [MHz] or less, the length of the operation side antenna 60 is set once along the cave floor, the cave side, and the cave ceiling. Or the length of the extent of winding several times is sufficient. In addition, the operation-side antenna 60 can be used for both transmission of transmission signals and reception of response signals, and does not require an antenna dedicated for transmission of transmission signals and a dipole antenna dedicated for reception of response signals. For example, when the response frequency from the wireless detonator is 10 [MHz], the length of the receiving antenna of the detonator is not longer than the response frequency wavelength λ (in this case, 30 [m]). It is preferable that the operation side antenna of one to several turns can be used also. In addition, the wireless detonator antenna 11 does not need to prepare a transmission-dedicated antenna and a reception-dedicated antenna separately, and a transmission antenna for a response signal transmitted from the wireless detonator 10 to the detonator 50 is used for the wireless detonator. The antenna 11 can also be used.

  In addition, the radio detonator antenna 11 described in the present embodiment includes a coil 117Z and a core 115 that can efficiently receive the energy from the magnetic field in the Z-axis direction and receive a wireless control signal. The Z-axis antenna 11Z, the coil 117X that can efficiently receive the energy from the magnetic field in the X-axis direction, and can receive a wireless control signal, the X-axis antenna 11X by the core 115, and the Y-axis direction It has a coil 117Y that can efficiently receive the energy from the magnetic field and can receive a wireless control signal, and a Y-axis antenna 11Y by the core 115. For this reason, even if it is the charging hole 40 drilled in any position in the face surface 41 shown in FIG. 1, the said energy can be received more efficiently and a radio | wireless control signal can be received. Further, as shown in FIG. 2, the parent die 201 can be easily formed by inserting the detonation portion 14 protruding from the radio detonator antenna 11 into the explosive.

  The radio detonator antenna 11, the radio detonator 10, and the radio detonation system 1 of the present invention are not limited to the appearance, structure, configuration, shape, and the like described in the present embodiment, and do not change the gist of the present invention. Various changes, additions and deletions can be made.

  The wireless detonator antenna 11, the wireless detonator 10, and the wireless detonation system 1 described in the present embodiment are not limited to tunnel excavation sites, and can be applied to various site explosions.

  The numerical values used in the description of the present embodiment are examples, and are not limited to these numerical values.

  The radio detonator antenna 11 described in the present embodiment is different from the conventional antenna in which only the Z-axis antenna is disposed in the charging hole along the Z-axis direction for ignition energy and electronic circuit driving. Energy can be received more efficiently, and a wireless control signal can be received more efficiently. Note that “efficiently” means that for conventional antennas, for example, at the edge of the operating antenna such as the charging positions P1a, P1c, P3a, P3c shown in the example of FIG. In rare cases, when the energy cannot be received sufficiently or when the wireless initiation signal cannot be received, the wireless detonator antenna according to the present embodiment has been tested several times by the inventor. This means that a case where energy or energy for driving an electronic circuit cannot be sufficiently received or a case where a wireless initiation signal cannot be received has never occurred. In other words, “can be received efficiently” and “can be received efficiently” by the radio detonator antenna 11 described in the present embodiment means that the energy for ignition and the electrons are compared with the conventional antenna described above. This means that it is possible to “receive more reliably” the energy for driving the circuit and the like, and “can receive more reliably” the wireless initiation signal.

DESCRIPTION OF SYMBOLS 1 Wireless detonation system 10, 10A-10D Wireless detonator 11, 11A, 11B Radio detonator antenna 11X, 11XA, 11XB X axis antenna 11Y, 11YA, 11YB Y axis antenna 11Z, 11ZA Z axis antenna 111 Conductive wire 114 opening 115 core (soft magnetic core)
117X Coil (X axis coil)
117Y coil (coil for Y axis)
117Z coil (coil for Z-axis)
DESCRIPTION OF SYMBOLS 12 Control part 121,122,123 Tuning circuit 124 Three axis synthesis circuit 125 Detection / demodulation circuit 126 Rectifier circuit 127 Electric storage device for electronic circuit drive 128 Regulator (constant voltage circuit)
131 CPU
132 ID storage device 133 Modulation circuit 134 Transmission circuit 138 Initiation switch circuit 14 Initiation part 141 Ignition circuit 142 Ignition ball 143 Initiating agent 144 Attached medicine 151, 152, 153 Path 154 Control signal 156 Control signal 16, 16B Bobbin 20 Explosive unit 201 Parent die 202 Additional die 22 Packing material 40 Charging hole 41 Face face (location to be bombed)
42 Cave Floor 43 Cave Side Wall 44 Cave Ceiling 50 Explosive Manipulator 60 Operation Side Antenna 61 Auxiliary Bus 62 Blasting Bus 71 Cable 72 Display Device D1 Diameter D2 Depth J11 Antenna Shaft L1, L2, L3 Distance P1a-P1c, P2a-P2c, P3a-P3c Charge position

Claims (7)

A wireless detonator antenna that is an antenna that receives an ignition energy, an electronic circuit driving energy and a control signal in a wireless manner,
A soft magnetic core formed of a soft magnetic material;
A Z-axis coil;
An X-axis coil;
Y-axis coil,
When the axis of the soft magnetic core is the Z axis, the axis orthogonal to the Z axis is the X axis, and the axis orthogonal to both the Z axis and the X axis is the Y axis,
The Z-axis coil in which a conductive wire is wound around the Z-axis and the soft magnetic core, or the Z-axis bobbin formed of a non-magnetic material around the Z-axis. A Z-axis antenna is formed by the Z-axis coil in which a conductive wire is wound around a soft magnetic core and the soft magnetic core.
The X-axis coil in which a conductive wire is wound around the X-axis and the soft magnetic core, or the X-axis bobbin formed of a non-magnetic material around the X-axis An X-axis antenna is formed by the X-axis coil in which a conductive wire is wound around a soft magnetic core and the soft magnetic core.
The Y-axis coil in which a conductive wire is wound around the Y-axis and the soft magnetic core, or the Y-axis bobbin formed of a non-magnetic material around the Y-axis A Y-axis antenna is formed by the Y-axis coil in which a conductive wire is wound around a soft magnetic core and the soft magnetic core,
The Z-axis antenna, the X-axis antenna, and the Y-axis antenna are arranged close to each other,
Wireless detonator antenna. The radio detonator antenna according to claim 1,
The Z-axis antenna, the X-axis antenna, and the Y-axis antenna are arranged so as to be linearly adjacent along the Z-axis direction.
Wireless detonator antenna. The wireless detonator antenna according to claim 2,
The Z-axis antenna is disposed at a position sandwiched between the X-axis antenna and the Y-axis antenna.
Wireless detonator antenna. The radio detonator antenna according to any one of claims 1 to 3,
The soft magnetic core is formed in a cylindrical shape,
Wireless detonator antenna. An antenna for a wireless detonator according to any one of claims 1 to 4,
A controller connected to the wireless detonator antenna and igniting the detonator;
The initiation unit connected to the control unit,
Wireless detonator. A wireless detonator according to claim 5;
The explosive loaded in the charge hole drilled at the bombed location, where the wireless detonator is attached,
An operation side antenna stretched in the vicinity of the charge hole,
The ignition energy, the energy for driving the electronic circuit, and the control signal are arranged wirelessly through the operation side antenna disposed at a remote position away from the charge hole, and the control signal is transmitted through the wireless detonator antenna. A detonator operating device to be transferred to the wireless detonator,
Wireless detonation system. The wireless detonation system according to claim 6,
The antenna for the wireless detonator in the wireless detonator is cylindrical,
The inner diameter of the antenna for the wireless detonator is formed larger than the outer diameter of at least one of the initiation part and the control part of the radio detonator,
At least one of the initiation part and the control part of the wireless detonator is inserted into the wireless detonator antenna and integrated with the wireless detonator antenna, and loaded in the charge hole.
Wireless detonation system.

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