JP2017036854A - Antenna for radio detonator, radio detonator, and radio detonation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna for a wireless detonator tube, which can receive energy for ignition, energy for driving an electronic circuit and a control signal more efficiently regardless of the influence of the positional relationship between the antenna on the operation side and the antenna for the wireless detonator tube. Provided are a wireless detonation lightning tube equipped with an antenna for a wireless detonation lightning tube, and a wireless detonation system using the wireless detonation lightning tube. SOLUTION: The antenna 11A for a wireless detonator tube, which is an antenna that receives energy for ignition, energy for driving an electronic circuit, and a control signal in a wireless manner, is a tubular magnetic material 115 having a thin tubular magnetic material. A tubular coil 119 around which a conductive wire is wound so as to be wound around a shaft (J11) of a tubular magnetic material is provided on the outer peripheral surface of the above, and the whole is formed in a tubular shape. [Selection diagram] FIG. 16

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 the ignition energy and the electronic circuit driving energy are more efficiently irrespective of the influence of the positional relationship between the operation side antenna and the radio detonator. 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, the first aspect of the present invention is a radio detonator antenna that is an antenna for receiving ignition energy, electronic circuit driving energy, and control signals in a wireless manner, wherein the magnetic body has a thin cylindrical shape. And a cylindrical coil wound with a conductive wire so as to be wound around the axis of the cylindrical magnetic body, and on the outer peripheral surface of the cylindrical magnetic body, A wireless detonator antenna is provided with a cylindrical coil and is formed into a cylindrical shape as a whole.

  Next, a second invention of the present invention is a wireless detonator antenna that is an antenna that receives ignition energy, electronic circuit driving energy, and control signals in a wireless manner, wherein the magnetic body has a thin cylindrical shape. A cylindrical magnetic body, and a sheet-like coil around which a conductive wire is wound so as to be wound around an axis orthogonal to the axis of the cylindrical magnetic body. The antenna for a radio detonator and detonator having the sheet-like coil provided on the outer peripheral surface thereof and having a cylindrical shape as a whole.

  Next, a third invention of the present invention is a wireless detonator antenna that is an antenna that receives ignition energy, electronic circuit driving energy, and control signals in a wireless manner, wherein the magnetic body has a thin cylindrical shape. Around the cylindrical magnetic body, a cylindrical coil wound with a conductive wire so as to be wound around the axis of the cylindrical magnetic body, and an axis perpendicular to the axis of the cylindrical magnetic body A sheet-like coil wound with a conductive wire so as to be wound, and provided on the outer peripheral surface of the cylindrical magnetic body so that the cylindrical coil and the sheet-like coil do not overlap each other. This is an antenna for a wireless detonator with a tubular shape as a whole.

  Next, a fourth aspect of the present invention is a wireless detonator antenna that is an antenna that receives ignition energy, electronic circuit driving energy, and control signals in a wireless manner, wherein the magnetic body has a thin cylindrical shape. When the cylindrical magnetic body is made, the axis of the cylindrical magnetic body 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 A Z-axis cylindrical coil in which a conductive wire is wound around the Z axis, an X-axis sheet coil in which a conductive wire is wound around the X axis, and a conductive material around the Y axis. A Y-axis sheet coil on which a wire is wound, and the Z-axis cylindrical coil, the X-axis sheet coil, and the Y-axis sheet coil do not overlap each other. Are provided on the outer peripheral surface of the cylindrical magnetic body in the order of Is Na.

  Next, a fifth invention of the present invention is the radio detonator antenna according to the fourth invention, wherein the Z-axis cylindrical coil includes the X-axis sheet coil and the Y-axis sheet. This is an antenna for a radio detonator arranged at a position sandwiched between coil-like coils.

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

  Next, according to a seventh aspect of the present invention, there is provided a radio detonator according to the sixth aspect of the present invention, and an explosive loaded in the charge hole to which the radio 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, an eighth invention of the present invention is the wireless detonation system according to the seventh invention, wherein an inner diameter of the wireless detonator antenna in the wireless detonator is formed larger than an outer diameter of the explosive. The explosive is a wireless detonation system that is inserted into the radio detonator antenna, integrated with the radio detonator antenna, and loaded in the charge hole.

  According to the first invention, when the axis of the cylindrical magnetic body is arranged so as to coincide with the axial direction of the charge hole (that is, the Z-axis direction in FIG. 5), it is wound in the example of FIG. In the vicinity of the charging position P2b (the charging position where the magnetic field in the Z-axis direction is the largest) near the center of the operation-side antenna 60, the energy and control signal (for example, an ID request signal, a storage request signal, and a storage It is possible to realize a radio detonator antenna that can receive a status confirmation signal, a detonation execution signal, and the like) in a wireless manner.

  According to the second invention, when the axis of the cylindrical magnetic body is arranged so as to coincide with the axial direction of the charge hole (that is, the Z-axis direction in FIG. 5), it is wound in the example of FIG. At the charge position near the edge excluding the vicinity of the center of the operation side antenna 60 (that is, the position where the magnitude of the magnetic field in the X-axis direction and the Y-axis direction is larger than the magnitude of the magnetic field in the Z-axis direction). Using the magnetic field other than the Z-axis direction, the energy and the control signal (including the ID request signal, the storage request signal, the storage status confirmation signal, the detonation execution signal, etc.) can be received in the most efficient manner. A wireless detonator antenna can be realized.

  According to the third invention, both the cylindrical coil whose winding axis is the axis of the cylindrical magnetic body and the sheet coil whose winding axis is an axis orthogonal to the axis of the cylindrical magnetic body are provided. . Thus, according to the position on the face, a radio detonator antenna that can efficiently receive the energy and at least one of the cylindrical coil and the sheet coil and can receive a wireless control signal is provided. Can be realized.

  According to the fourth invention, a Z-axis cylindrical coil 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; An X-axis sheet-like coil that can efficiently receive the energy with respect to the magnetic field component in the X-axis direction in FIG. 5 and that can efficiently receive a wireless control signal, and a magnetic field in the Y-axis direction in FIG. A wireless detonator antenna configured by three coils, which is a Y-axis sheet-like coil that can efficiently receive the energy with respect to the components and can efficiently receive a wireless control signal. be able to. 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 fifth invention, in one Z-axis cylindrical coil and two sheet-shaped coils (X-axis sheet-shaped coil and Y-axis sheet-shaped coil) arranged along the first axis direction, The axial cylindrical coil is arranged in the center. As a result of various experiments by the inventors, the energy and control signal are received more efficiently when the Z-axis cylindrical coil is arranged at the center than when the Z-axis cylindrical coil is arranged at the end. Confirmed that it can. 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 sixth aspect of the present invention, for each radio detonator capable of receiving the energy more efficiently and receiving the radio control signal more efficiently at each charge hole drilled in the facet. A wireless detonator equipped with an antenna can be realized.

  According to the seventh aspect of the present invention, for each radio detonator capable of receiving the energy more efficiently and receiving the radio control signal more efficiently at each charge hole drilled in the facet. A wireless detonation system using a radio detonator having an antenna can be realized.

  According to the eighth aspect of the invention, since the explosive can be inserted into the antenna for the wireless detonator, it becomes possible to load the explosive to the innermost part of the charge hole, and the initiation efficiency can be improved.

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 state by which the control part and the detonation part were penetrated in the antenna for radio detonators, and the radio detonator was comprised. It is a figure explaining the example (the 1) of the radio detonator with which the accommodation structure of a control part and a detonator differs from the radio detonator shown in FIG. It is a figure explaining the example (the 2) of the radio detonation detonator where the accommodation structure of a control part and a detonation part differs with respect to the radio detonation detonator shown in FIG. It is a perspective view explaining the antenna for a radio detonator composed of a base cylindrical body, a cylindrical magnetic body, a Z-axis cylindrical coil, an X-axis sheet coil, and a Y-axis sheet coil. It is the figure which looked at the state which wound the cylindrical magnetic body around the outer peripheral surface of the base cylinder in FIG. 11 from the axial direction of the base cylinder. It is a figure explaining the example of the external appearance of the antenna for radio detonators with the Z-axis cylindrical coil arrange | positioned in the center. It is a figure explaining the example of the external appearance of the antenna for radio detonators which arranged the cylindrical coil for Z axes in the end (the left end in the example of Drawing 14). It is a perspective view explaining the example of the antenna for radio detonation detonators comprised by the base cylinder, the cylindrical magnetic body, the Z-axis cylindrical coil, and the X-axis sheet coil. It is a perspective view explaining the example of the antenna for radio detonation detonators comprised with the base cylinder, the cylindrical magnetic body, and the cylindrical coil for Z-axes. It is a perspective view explaining the example of the antenna for radio | wireless detonation detonators comprised with the base cylinder, the cylindrical magnetic body, and the sheet-like coil for Y-axis. It is a perspective view of the cylindrical coil for Z axes by which the conductive wire was wound around the Z axis. A sheet-like coil in which a conductive wire is wound around an axis orthogonal to the axis of the cylindrical magnetic body, the sheet-like coil having a conductive wire wound around the X axis It is a perspective view of a coil. A sheet-like coil in which a conductive wire is wound around an axis perpendicular to the axis of the cylindrical magnetic body, and a Y-axis sheet shape in which a conductive wire is wound around the Y axis It is a perspective view of a coil. It is a perspective view which shows the example (1) of the sheet-like coil which wound the electroconductive wire around each of two virtual axes. It is a perspective view which shows the example (2) of the sheet-like coil which wound the electrically conductive wire around each of two virtual axes. It is a perspective view which shows the example (3) of the sheet-like coil which wound the electrically conductive wire around each of two virtual axes. 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 wirelessly connected via the operation side antenna 60, and the wireless detonator is connected to the ignition detonator, the electronic circuit drive energy and the control signal via the wireless detonator antenna 11 described later. It is handed over to the control part and detonation part which constitutes. 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 substantially cylindrical radio detonator antenna 11, a controller 12, and a detonator 14. For example, the controller 12 and detonator 14 include: It is accommodated in a radio detonator antenna 11. The inner diameter of the substantially cylindrical radio detonator antenna 11 is larger than the outer diameter of the explosive. The explosive is inserted into the wireless detonator antenna 11 and the initiation portion 14 is inserted. The explosive 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 example of FIG. 10, only the detonator 14 may be accommodated in the radio detonator antenna 11 and the controller 12 may be disposed outside the radio detonator antenna 11.

  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 approximately 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. The energy can be efficiently received by the coil 119 and a Z-axis cylindrical antenna using a cylindrical magnetic body. 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 in the example of FIG. 6 (Z-axis cylindrical coil 119 and Z-axis cylindrical antenna with a cylindrical magnetic body) can the above-mentioned energy be received efficiently and a wireless control signal can be efficiently received. Not exclusively. 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 wireless detonator 10 (Figs. 6-10)]
FIG. 6 shows an exploded perspective view of the wireless detonator 10. 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 is formed by winding a cylindrical base cylindrical body 114 (for example, a cylindrical acrylic material) and a sheet-shaped magnetic body (for example, ferrite) around the outer periphery of the base cylindrical body 114 so as to form a thin cylindrical shape. The rotated cylindrical magnetic body 115 (see FIG. 11), the cylindrical coil (Z-axis cylindrical coil 119) and the sheet coil 117 (X-axis sheet coil 117X) provided on the outer periphery of the cylindrical magnetic body 115 Y-axis sheet-like coil 117Y) is arranged coaxially. The radio detonator antenna 11 includes a Z-axis cylindrical coil 119, an X-axis sheet coil 117X, and a Y-axis sheet coil 117Y arranged in the Z-axis direction. The shape of the radio detonator antenna 11 is preferably a thin cylindrical shape, but may be a thin cylindrical shape, and the axial cross section may be any shape such as a circle, an ellipse, or a polygon. There may be. 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. A detonator 14 is fixed to the controller 12, and the controller 12 is fixed to one opening of the radio detonator antenna 11. The space between the radio detonator antenna 11 and the control unit 12 is preferably filled with explosives. Thereby, since an explosive can be arrange | positioned to the innermost part of a charge hole, the improvement of the crushing effect can be aimed at. The initiation portion 14 is fixed so as to extend toward the other opening, and when the explosive is inserted from the other opening, the initiation portion 14 is inserted into the tip of the inserted explosive and the parent die is formed. .

  FIG. 9 shows an example of a cross-sectional view of a wireless detonator 10A having a configuration different from that of FIG. 8 in which the controller 12 and the detonator 14 are accommodated in the radio detonator antenna 11. In the example shown in FIG. 9, the wireless detonator antenna 11, the cylindrical magnetic body 115, and the base cylindrical body 114 are coaxially arranged and formed in a cylindrical shape. And the control part 12 to which the detonation part 14 was fixed to one opening part is being fixed with the adhesive agent 161, for example. The control unit 12 includes a control case 162, an electronic circuit 164 (an electronic circuit indicated by reference numeral 12 in FIG. 24), a buffer material 163, and the like. The initiation portion 14 is fixed so as to extend toward the other opening, and when the explosive is inserted from the other opening, the initiation portion 14 is inserted into the tip of the inserted explosive and the parent die is formed. . Further, by forming the control case 162 with a material such as a metal having a relatively high strength and using an appropriate cushioning material 163, the shock wave generated when the explosive disposed in the adjacent charge hole is detonated is It is possible to prevent the electronic circuit 164 from being damaged by being attenuated by the control case 162 and the buffer material 163 before being transmitted to the circuit 164.

  FIG. 10 shows an example of a cross-sectional view of the wireless detonator 10B in which the detonator 14 is accommodated in the radio detonator antenna 11 and the controller 12 is disposed outside the radio detonator antenna 11. In the example shown in FIG. 10, the wireless detonator antenna 11, the cylindrical magnetic body 115, and the base cylindrical body 114 are coaxially disposed in a cylindrical protective case 165. In addition, the protective case 165 has an isolation wall 166 that isolates the controller 12 from the initiator 14 and the explosive. The control unit 12 is disposed on the opposite side of the detonation unit 14 across the isolation wall 166 and outside the radio detonator antenna 11 instead of in the radio detonator antenna 11. Note that the control unit 12 may be fitted into and fixed to one opening of the protective case 165, or may be fixed to one opening of the protective case 165 with an adhesive or the like. The control unit 12 is the same as the example shown in FIG. 9 in that the control unit 162 includes a control case 162, an electronic circuit 164, a buffer material 163, and the like. As in the example of FIG. 9, the initiation portion 14 is fixed so as to extend toward the other opening, and when the explosive is inserted from the other opening, the initiation portion 14 is inserted into the tip of the inserted explosive. The parent die is formed. Further, by forming the control case 162 from a material such as a metal having a relatively high strength, the shock wave generated when the explosive arranged in the adjacent charge hole starts up is transmitted to the electronic circuit 164 before the explosion occurs. The electronic circuit 164 can be prevented from being damaged by being attenuated by 162 and the buffer material 163. Furthermore, by disposing a part of the control case 162 outside the radio detonator antenna 11, it is possible to make the size of the electronic circuit 164 larger than the inner diameter of the base cylinder 114, and the size of the electronic circuit 164. The degree of freedom increases. Furthermore, the area through which the explosive is inserted is expanded, and the crushing effect can be improved.

● [Structure of radio detonator antenna 11 (FIGS. 11 to 17)]
FIG. 11 shows an exploded perspective view of the radio detonator antenna 11. The wireless detonator antenna 11 is an antenna that receives ignition energy, electronic circuit driving energy, and control signals in a wireless manner. The radio detonator antenna 11 includes a base cylindrical body 114, a cylindrical magnetic body 115, an X-axis sheet coil 117X, a Z-axis cylindrical coil 119, and a Y-axis sheet coil 117Y. It is configured. The base cylinder 114 may be omitted.

  The material of the cylindrical magnetic body 115 is a material having a high magnetic permeability in which the magnetic pole disappears or reverses relatively easily among the magnetic bodies. For example, iron, silicon steel, permalloy, sendust, permendule, ferrite Amorphous magnetic alloy, nanocrystal magnetic alloy, and the like are preferable. In this embodiment, ferrite is used. As shown in FIG. 11, the cylindrical magnetic body 115 is formed in a sheet shape, and is wound around the outer peripheral surface of the base cylindrical body 114 to form a thin cylindrical shape. As shown in FIG. 12, it is more preferable that the winding end of the cylindrical magnetic body 115 is wound so that the gap 172 becomes substantially zero without overlapping. However, as shown in FIG. 11, one end of the winding of the cylindrical magnetic body 115 may be wound so as to overlap the other end and have an overlap portion 171, or the cylindrical magnetic body 115 may be wound. The body 115 may be wound so as to be double or triple. Note that the gap 172 shown in FIG. 12 is within the allowable range if it is a minute gap of about 1 mm, for example, but it is not preferable if the gap 172 is larger than the minute gap. Further, as shown in FIGS. 6 and 11, the antenna axis J11 that is the axis of the cylindrical magnetic body 115 is parallel to the Z axis and can be said to be the Z axis.

  11, the Z-axis cylindrical coil 119, the X-axis sheet coil 117X, and the Y-axis sheet coil 117Y are attached so as to be coaxial with the base cylinder 114 and the cylindrical magnetic body 115. Thus, the radio detonator antenna 11 is formed. 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 Z-axis cylindrical coil 119 having the Z-axis direction as the winding axis of the conductive wire and the Z-axis cylindrical antenna with the cylindrical magnetic body are used. Thus, the energy can be received efficiently and a wireless control signal can be received efficiently. Further, with respect to the magnetic field of the component in the X-axis direction in FIG. 5, the X-axis sheet-like coil 117 </ b> X having the X-axis direction as the winding axis of the conductive wire and the X-axis sheet-like antenna using the cylindrical magnetic body are used. The energy can be received efficiently and a wireless control signal can be received efficiently. Further, with respect to the magnetic field of the Y-axis component in FIG. 5, the Y-axis sheet coil 117Y having the Y-axis direction as the winding axis of the conductive wire and the Y-axis sheet-shaped antenna using the cylindrical magnetic body The energy can be received efficiently and a wireless control signal can be received efficiently. The example shown in FIG. 11 includes a base cylindrical body 114, a cylindrical magnetic body 115, a Z-axis cylindrical coil 119, an X-axis sheet coil 117X, and a Y-axis sheet coil 117Y. In this example, the wireless detonator antenna 11 is shown, but the base cylinder 114 may be omitted.

  The radio detonator antenna 11 includes a Z-axis cylindrical coil 119 and a Z-axis cylindrical antenna made of a cylindrical magnetic material, an X-axis sheet coil 117X and an X-axis sheet-like antenna made of a cylindrical magnetic material, and a Y-axis. Three sheet-like coils 117Y and a Y-axis sheet-like antenna made of a cylindrical magnetic body are formed in any order so as not to overlap each other along the Z-axis direction. According to the results of various experiments by the inventors, the Z-axis cylindrical coil 119 is arranged in the center (the position where the Z-axis cylindrical coil is sandwiched between the X-axis sheet coil and the Y-axis sheet coil). Is more preferable. For example, in the example of FIG. 13, the X-axis sheet coil 117X is arranged on the left side, the Z-axis cylindrical coil 119 is arranged in the center, and the Y-axis sheet coil 117Y is arranged on the right side. (117X, 119, 117Y). The Z-axis cylindrical coils 119 are arranged in the center in the order of (117X, 119, 117Y) shown in FIG. 13 and rotated 90 degrees around the Z-axis from the state shown in FIG. (117Y, 119, 117X) are arranged in this order. As shown in the example of FIG. 14, the Z-axis cylindrical coil 119 is arranged at the left end portion (119, 117X, 117Y) in order, and although not shown, (119, 117Y, 117X), and The Z-axis cylindrical coil 119 may be arranged in the order of (117X, 117Y, 119) and (117Y, 117X, 119) at the right end.

  The radio detonator antenna 11 is composed of a Z-axis cylindrical coil 119 (cylindrical coil), an X-axis sheet coil 117X (sheet coil), and a Y-axis sheet coil 117Y (sheet coil). You may comprise with at least 1 coil and a cylindrical magnetic body of a cylindrical coil or a sheet-like coil, without comprising with one coil and a cylindrical magnetic body. In this case, for the charging position P2c shown in FIG. 5, as shown in the example of FIG. 15, the Z-axis cylindrical coil 119, the X-axis sheet coil 117X, the base cylindrical body 114, and the cylindrical magnetic body 115 are used. May constitute the radio detonator antenna 11C (however, the base cylinder 114 may be omitted). In the example of FIG. 5, for example, for the charging position P2b, as shown in the example of FIG. 16, the Z-axis cylindrical coil 119, the base cylindrical body 114, and the cylindrical magnetic body 115 are used for the radio detonator. The antenna 11A may be configured (however, the base cylinder 114 may be omitted). Further, for the charging position P1b shown in FIG. 5, as shown in the example of FIG. 17, the wireless detonator antenna 11B is composed of the Y-axis sheet coil 117Y, the base cylinder 114, and the cylindrical magnetic body 115. You may comprise (however, the base cylinder 114 may be abbreviate | omitted). That is, according to the position of the charge hole, an antenna having an axis in the direction in which the (most) magnetic field component is large at that position is configured. In this case, it is more preferable that the winding axis of the conductive wire of the antenna is aligned with the direction of the magnetic field at that position, not limited to the X axis, the Y axis, and the Z axis.

  16 and 17, the X-axis sheet coil 117X, the base cylinder 114, and the cylindrical magnetic body 115 may constitute a radio detonator antenna (however, the base cylinder). The body 114 may be omitted). In addition to the example shown in FIG. 15, the Z-axis cylindrical coil 119 and the X-axis sheet coil 117X may be changed to a Z-axis cylindrical coil 119 and a Y-axis sheet coil 117Y. The sheet-shaped coil 117X for X-axis and the sheet-shaped coil 117Y for Y-axis may be changed. In this way, different radio detonator antennas are selected for each position of the charge hole on the face and the energy can be received more efficiently at each charge hole cut in the face. It is possible to realize a radio detonator antenna capable of receiving the control signal.

[Structure of Z-axis cylindrical coil 119, X-axis sheet coil 117X, and Y-axis sheet coil 117Y (FIGS. 18 to 23)]
In the following description of each coil, the axis of the cylindrical magnetic body will be described as the Z axis, the axis perpendicular to the Z axis as the X axis, and the axis perpendicular to both the Z axis and the X axis as the Y axis. FIG. 18 shows an example of the appearance of the Z-axis cylindrical coil 119. The Z-axis cylindrical coil 119 is a cylindrical coil formed in a cylindrical shape by winding a conductive wire 111 around the Z-axis. Although FIG. 18 shows an example in which the conductive wire 111 is wound on the cylindrical body 112 to form a cylindrical coil, the conductive wire 111 may be wound without providing the cylindrical body 112 to form a cylindrical coil. Further, from the exploded perspective view of FIG. 16, the Z-axis cylindrical coil 119 (corresponding to the cylindrical coil) is coaxial with the thin cylindrical cylindrical magnetic body 115 (in this case, coaxial with the Z-axis). Thus, the wireless detonator antenna 11A (Z-axis cylindrical antenna) can be configured by providing the cylindrical magnetic body 115 on the outer peripheral surface of the cylindrical magnetic body 115 so as to form a cylindrical shape as a whole.

  FIG. 19 shows an example of the appearance of the X-axis sheet coil 117X. As shown in FIG. 21, the X-axis sheet coil 117X has a sheet shape in which a conductive wire 111 is wound around each of the parallel virtual axes JNA and JNB and is orthogonal to the virtual axes JNA and JNB. 19 is a sheet-like coil formed in a cylindrical shape so that the virtual axes JNA and JNB are coaxial, as shown in FIG. As shown in FIG. 19, in the X-axis sheet coil 117X, the virtual axes JNA and JNB (see FIG. 21) are curved so as to be coaxial, and the virtual axes JNA and JNB that are coaxial are parallel to the X axis. It is arranged to become. That is, the X-axis sheet coil 117X is a sheet coil in which the conductive wire 111 is wound around the X-axis. In addition, as shown in FIG. 21, the conductive wire 111 may be wound around the sheet 113 to form a sheet-like coil, or the conductive wire 111 may be wound around the sheet 113 without providing the sheet 113. Also good. Further, in the exploded perspective view shown in FIG. 17, the Y-axis sheet coil 117 </ b> Y is replaced with the X-axis sheet coil 117 </ b> X, and curved from the exploded perspective view along the outer peripheral surface of the cylindrical magnetic body 115. By providing the X-axis sheet coil (corresponding to the sheet coil) on the outer peripheral surface of the thin cylindrical magnetic body 115 and forming the whole into a cylindrical shape, a radio detonator antenna ( X-axis sheet-like antenna) can be configured. At this time, in the X-axis sheet-like coil, a conductive wire is wound around an axis (in this case, the X-axis) orthogonal to the axis (Z-axis) of the cylindrical magnetic body 115. As an example of the sheet-like coil 116 in which the conductive wire 111 is wound around each of the virtual axes JNA and JNB, the conductive wire 111 may be wound as shown in FIGS.

  FIG. 20 shows an example of the appearance of the Y-axis sheet coil 117Y. As shown in FIG. 21, the Y-axis sheet coil 117Y has a sheet shape in which a conductive wire 111 is wound around each of the parallel virtual axes JNA and JNB, and is orthogonal to the virtual axes JNA and JNB. After the coil 116 is formed, as shown in FIG. 20, the sheet-like coil is formed in a cylindrical shape so that the virtual axes JNA and JNB are coaxial. As shown in FIG. 20, in the Y-axis sheet coil 117Y, the virtual axes JNA and JNB (see FIG. 21) are curved so as to be coaxial, and the virtual axes JNA and JNB that are coaxial are parallel to the Y axis. It is arranged to become. That is, the Y-axis sheet coil 117Y is a sheet coil in which the conductive wire 111 is wound around the Y-axis. In addition, as shown in FIG. 21, the conductive wire 111 may be wound on the sheet 113 to form a sheet-like coil, or the conductive wire 111 may be wound without providing the sheet 113 to form a sheet-like coil. Also good. Further, in the exploded perspective view shown in FIG. 17, a sheet-like coil for Y axis (corresponding to a sheet-like coil) curved from the state of the exploded perspective view along the outer peripheral surface of the cylindrical magnetic body 115 is thinned. A wireless detonator antenna (Y-axis sheet antenna) can be configured by providing the entire cylindrical magnetic body 115 on the outer peripheral surface of the cylindrical magnetic body 115 so as to form a cylinder. At this time, in the Y-axis sheet coil, a conductive wire is wound around an axis (in this case, the Y axis) orthogonal to the axis (Z axis) of the cylindrical magnetic body 115. As an example of the sheet-like coil 116 in which the conductive wire 111 is wound around each of the virtual axes JNA and JNB, the conductive wire 111 may be wound as shown in FIGS.

  Therefore, the Y-axis sheet coil 117Y is obtained by turning the X-axis sheet coil 117X by 90 [°] around the Z-axis. Each of the Z-axis cylindrical coil 119, the X-axis sheet coil 117X, and the Y-axis sheet coil 117Y is provided on the outer peripheral surface of the cylindrical magnetic body 115. The ignition energy, the energy for driving the electronic circuit, and the control signal can be received more efficiently than the case of being provided on the inner peripheral surface. Further, as shown in FIGS. 19, 20, etc., in the description of the present embodiment, the winding of the conductive wire 111 in the X-axis sheet coil 117X and the Y-axis sheet coil 117Y is wound in a rectangular shape. However, the shape of the winding is not limited to a rectangular shape, and it may be wound in a spiral shape (spiral shape) or various polygonal shapes. Moreover, you may wind so that various shapes may be mixed. Alternatively, the Z-axis cylindrical coil, the X-axis sheet coil, and the Y-axis sheet coil may be formed by manually winding the conductive wire 111 a predetermined number of times by an operator.

[[Circuit in Control Unit 12 and Initiation Unit 14 of Wireless Detonator 10 (FIG. 24)]
Next, the circuit in the control unit 12 and the detonation unit 14 of the wireless detonator 10 will be described with reference to the circuit block diagram shown in FIG. FIG. 24 shows respective circuits (block diagrams) 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 sheet coil 117X and an X-axis sheet antenna made of a cylindrical magnetic material, a Z-axis cylindrical coil 119 and a Z-axis cylindrical antenna made of a cylindrical magnetic material, The Y-axis sheet coil 117Y and a Y-axis sheet antenna made of a cylindrical magnetic material are used. The X-axis sheet coil 117X is connected to the switch module 124 via a tuning circuit 121 composed of a variable capacitor or the like. Similarly, the Z-axis cylindrical coil 119 is connected to the switch module 124 via a tuning circuit 122 composed of a variable capacitor or the like. Similarly, the Y-axis sheet coil 117Y is connected to the switch module 124 via a tuning circuit 123 formed of a variable capacitor or the like. Thus, in each of the X-axis sheet coil 117X, the Z-axis cylindrical coil 119, and the Y-axis sheet coil 117Y, the conductive wire 111 is connected to each of the tuning circuits 121, 122, and 123. ing. Each of the tuning circuits 121, 122, 123 is connected to the switch module 124.

  The control unit 12 includes tuning circuits 121, 122, 123, a switch module 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, a detonation power storage device 136, and an electronic circuit drive. Power storage device 127, storage state detection circuit 137, detonation switch circuit 138, rectifier circuit 126, storage switch circuit 135, and the like. Each of the tuning circuits 121, 122, 123 is a variable capacitor for adjusting the resonance frequency of the corresponding X-axis sheet coil 117X, Z-axis cylindrical coil 119, and Y-axis sheet coil 117Y. Etc.

  The switch module 124 is switched in a switch state by a control signal 154 of the CPU 131. When the wireless detonator antenna 11 receives the energy or receives a control signal, the switch module 124 connects the wireless detonator antenna 11 to the path 151 and the path 152 based on the control signal 154 from the CPU 131. To do. The route 151 is a route for capturing the received control signal, and the route 152 is a route for rectifying, storing, and converting the received energy into a voltage. A wireless control signal (including an ID request signal, a storage request signal, a storage status confirmation signal, a detonation execution signal, etc.) received via the path 151 and the detection / demodulation circuit 125 is captured by the CPU 131 and the path 152 The energy passing through the regulator 128 (constant voltage circuit) is used as a power source for an electronic circuit such as a CPU and is stored in the electronic circuit driving power storage device 127. In addition, when storage of energy for initiation is instructed by the control signal, the state of the storage switch circuit 135 is switched by the control signal 155 of the CPU 131, and energy for initiation is stored in the initiation storage device 136. The As a result, it is possible to prevent energy for initiation from being stored in the initiation power storage device 136 without permission. In addition, when the CPU 131 transmits a radio signal, the switch module 124 transmits a signal transmitted from the CPU 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 the tuning circuit 121. The X-axis sheet coil 117X is connected to the Z-axis cylindrical coil 119 via the tuning circuit 122, and the Y-axis sheet coil 117Y is connected via the 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.

  The initiation power storage device 136 stores the energy output from the rectifier circuit 126. The storage state detection circuit 137 outputs a signal corresponding to the energy stored in the initiation power storage device 136 to the CPU 131. Further, when the CPU 131 receives the storage state confirmation signal (control signal), the CPU 131 transmits a response signal including the detected storage state. When the CPU 131 receives the initiation execution signal (control signal), the control signal 156 controls the initiation switch circuit 138 from the open state to the short-circuit state, and the energy stored in the initiation power storage device 136 is ignited by the ignition circuit. Output to 141 and execute detonation.

  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 initiation switch circuit 138 is short-circuited, the ignition circuit 141 is supplied with electric power (energy) from the initiation power storage device 136 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.

  In the wireless detonation system 1 described in the present embodiment, the operation frequency is set to 100 [KHz] to 500 [KHz]. Since the wireless detonator can receive the energy efficiently and can receive a wireless control signal, the operation-side antenna 60 can be wound once or 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, a detonation execution signal, etc.) 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.

  Also, the radio detonator antenna 11 described in the present embodiment can receive the energy efficiently from the magnetic field in the Z-axis direction and can receive a radio control signal. 119 and a Z-axis cylindrical antenna formed of a cylindrical magnetic body, and an X-axis sheet-like coil 117X and a cylinder that can efficiently receive the energy from the magnetic field in the X-axis direction and receive a wireless control signal. Sheet-shaped antenna for X-axis by a sheet-shaped magnetic body, sheet-shaped coil 117Y for Y-axis and cylindrical magnetic body that can receive the above-mentioned energy efficiently from a magnetic field in the Y-axis direction and can receive a wireless control signal And a Y-axis sheet-like antenna. 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, by inserting explosives into the tubular radio detonator antenna 11, it becomes possible to load more explosives in the charge holes and improve the initiation efficiency. be able to.

  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.

  In addition, the winding axis of the conductive wire in the X-axis sheet coil 117X (axis orthogonal to the axis of the cylindrical magnetic body) is the winding axis of the conductive wire in the Z-axis cylindrical coil 119 (cylindrical magnetic material). Perpendicular to the body axis). In addition, the winding axis of the conductive wire in the Y-axis sheet coil 117Y (axis perpendicular to the axis of the cylindrical magnetic body) is the winding axis of the conductive wire in the Z-axis cylindrical coil 119 (cylindrical magnetic material). Perpendicular to the axis of the body) and perpendicular to the winding axis of the conductive wire in the X-axis sheet coil 117X.

  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 cylindrical antenna is disposed in the charge hole along the Z-axis direction. Driving energy and the like 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, 10B Wireless detonator 11, 11A, 11B, 11C Radio detonator antenna 111 Conductive wire 112 Cylindrical body 113 Sheet 114 Base cylindrical body 115 Cylindrical magnetic body 116 Sheet-like coil 117 Sheet-like Coil 117X X-axis sheet coil 117Y Y-axis sheet coil 119 Z-axis cylindrical coil 12 Controller 121, 122, 123 Tuning circuit 124 Switch module 125 Detection / demodulation circuit 126 Rectifier circuit 127 Power storage device for electronic circuit drive 128 Regulator (constant voltage circuit)
131 CPU
132 ID storage device 133 Modulation circuit 134 Transmission circuit 135 Power storage switch circuit 136 Explosive power storage device 137 Power storage state detection circuit 138 Explosion switch circuit 14 Initiation part 141 Ignition circuit 142 Ignition ball 143 Explosive agent 144 Attached medicine 151, 152, 153 Route 154 Control signal 155 Control signal 156 Control signal 161 Adhesive 162 Control case 163 Buffer material 164 Electronic circuit 165 Protective case 166 Isolation wall 171 Overlap part 172 Gap 20 Explosive unit 201 Parent die 202 Additional die 22 Load 40 Charge Hole 41 Face (face of the explosion)
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 Axis JNA, JNB Virtual Axis L1, L2, L3 Distance P1a-P1c , P2a to P2c, P3a to P3c

Claims (8)

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 cylindrical magnetic body in which the magnetic body has a thin cylindrical shape;
A cylindrical coil wound with a conductive wire so as to be wound around the axis of the cylindrical magnetic body,
The cylindrical coil is provided on the outer peripheral surface of the cylindrical magnetic body, and the whole is formed into a cylindrical shape.
Wireless detonator antenna. 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 cylindrical magnetic body in which the magnetic body has a thin cylindrical shape;
A sheet-like coil around which a conductive wire is wound so as to be wound around an axis perpendicular to the axis of the cylindrical magnetic body,
The sheet-like coil is provided on the outer peripheral surface of the cylindrical magnetic body, and the whole is formed in a cylindrical shape.
Wireless detonator antenna. 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 cylindrical magnetic body in which the magnetic body has a thin cylindrical shape;
A cylindrical coil in which a conductive wire is wound so as to be wound around the axis of the cylindrical magnetic body;
A sheet-like coil around which a conductive wire is wound so as to be wound around an axis perpendicular to the axis of the cylindrical magnetic body,
Provided on the outer peripheral surface of the cylindrical magnetic body so that the cylindrical coil and the sheet-shaped coil do not overlap, the whole is formed in a cylindrical shape,
Wireless detonator antenna. 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 cylindrical magnetic body in which the magnetic body has a thin cylindrical shape;
When the axis of the cylindrical magnetic body 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,
A Z-axis cylindrical coil in which a conductive wire is wound around the Z-axis;
An X-axis sheet-like coil in which a conductive wire is wound around the X-axis;
A sheet-like coil for Y-axis in which a conductive wire is wound around the Y-axis,
The Z-axis cylindrical coil, the X-axis sheet coil, and the Y-axis sheet coil are provided on the outer peripheral surface of the cylindrical magnetic body in any order so as not to overlap, Formed in a cylindrical shape,
Wireless detonator antenna. The wireless detonator antenna according to claim 4,
The Z-axis cylindrical coil is disposed at a position sandwiched between the X-axis sheet coil and the Y-axis sheet coil.
Wireless detonator antenna. An antenna for a wireless detonator according to any one of claims 1 to 5,
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 6;
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 7,
The inner diameter of the wireless detonator antenna in the wireless detonator is formed larger than the outer diameter of the explosive,
The explosive is inserted into the radio detonator antenna and integrated with the radio detonator antenna, and loaded in the charge hole.
Wireless detonation system.

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