JP6645067B2 - Radio detonator antennas, radio detonators, and radio detonation systems - Google Patents

Description

  The present invention relates to a radio detonator antenna that is an antenna attached to a radio detonator used for excavation of a tunnel, a radio detonator provided with the radio detonator antenna, and a radio detonation using the radio detonator About the system.

  2. Description of the Related Art 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 are drilled on a face, which is an excavation surface, in the excavation direction. Each detonation hole is loaded with a wireless detonator and an explosive that can be detonated wirelessly, and control signals are 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 wireless detonator has a wireless detonator antenna, and the wireless detonator antenna uses a magnetic field or an electric field generated around the operation-side antenna to wirelessly emit ignition energy or electrons. In addition to receiving energy for driving the circuit, it receives a wireless control signal (including an ID request signal, a power storage request signal, a power storage status confirmation signal, a detonation execution signal, and the like) and detonates. Therefore, the antenna for a radio detonator is required to have a performance capable of receiving the energy (energy for ignition, energy for driving an electronic circuit, and the like) and a performance capable of efficiently receiving a radio control signal. Is required.

  For example, Patent Literature 1 discloses a wireless detonator having a detonating side antenna (corresponding to an antenna for a wireless detonator) having a coil wound in a cylindrical shape. The detonation-side antenna is arranged in the charging hole with the cylindrical axial direction set in a direction along the axial direction of the charging hole.

  Further, in Patent Document 2, when the longitudinal direction of a receiving detonator (corresponding to a radio detonator) is set as an axis, a receiving coil (corresponding to a radio detonator antenna) having a conductive wire wound around the axis is used. A receiving detonator having the same is described.

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

  Patent Document 4 discloses a wireless detonator unit (corresponding to a wireless detonator) including a receiving coil (corresponding to a wireless detonator antenna) for receiving AC magnetic field energy wirelessly transmitted 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 position separated from the face face 41 by a predetermined distance L1, and wound along the inner wall of the tunnel. Turned and formed. The direction of the magnetic field generated around the operation-side antenna 60 is substantially perpendicular to the face 41 in the vicinity of the central portion of the wound operation-side antenna 60, as indicated by a dashed line in FIG. In this case, Z direction). However, the direction of the magnetic field in the vicinity of the edge of the wound operation-side antenna 60 distant from the center is a direction greatly curved with respect to the direction orthogonal to the face face 41. That is, in the example of FIG. 5, at the charging position P2b near the center of the wound operation-side antenna 60, the component of the direction of the magnetic field is substantially only in the Z-axis direction. As a result, the antenna with the conductive wire wound thereon can efficiently receive the energy. However, in the example of FIG. 5, 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 a component in the X-axis direction and a component in the Y-axis direction. And the component in the Z-axis direction, and the magnitude of the component in the Z-axis direction may be smaller than the magnitude of the component in the X-axis direction and the magnitude of the component in the Y-axis direction. Therefore, for example, at the charging position P3c, an antenna having a conductive wire wound around the Z-axis direction cannot efficiently receive the energy and cannot efficiently receive a wireless control signal. There is.

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

  Further, in the inventions described in Patent Documents 3 and 4, there is no description regarding the winding direction of the conductive wire in the receiving coil which is the antenna for the radio detonator, so that the conductive wire is similar to Patent Documents 1 and 2. It is considered to be a cylindrically wound antenna. Therefore, similarly to Patent Documents 1 and 2, in the vicinity of the center of the wound operation-side antenna, the energy can be efficiently received and the radio control signal can be efficiently received. At the edge of the operation-side antenna, there is a possibility that the energy cannot be received efficiently and a wireless control signal cannot be efficiently received.

  The present invention has been made in view of such a point, and regardless of the positional relationship between the operation side antenna and the antenna for the radio detonator, the energy for ignition and the energy for driving the electronic circuit can be more efficiently obtained. It is an object of the present invention to provide a radio detonator antenna capable of receiving a control signal and a radio detonator, a radio detonator provided with the radio detonator antenna, and a radio detonation system using the radio detonator.

  In order to solve the above-mentioned problems, a radio detonator antenna, a radio detonator, and a radio detonation system according to the present invention employ the following means. First, a first invention of the present invention is a wireless detonator primer antenna which is an antenna that receives energy for ignition, energy for driving an electronic circuit, and a control signal in a wireless manner, wherein a magnetic body is formed in a thin cylindrical shape. Cylindrical magnetic body, having a cylindrical coil around which a conductive wire is wound so as to be wound around the axis of the cylindrical magnetic body, the outer peripheral surface of the cylindrical magnetic body, This is a wireless detonator primer antenna provided with a tubular coil and formed entirely in a tubular shape.

  Next, a second invention of the present invention is a wireless detonator primer antenna which is an antenna that receives energy for ignition, energy for driving an electronic circuit and a control signal in a wireless manner, wherein the magnetic material has a thin cylindrical shape. And 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. An antenna for a radio detonator having a sheet-like coil provided on an outer peripheral surface thereof and formed entirely in a cylindrical shape.

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

  Next, a fourth invention of the present invention is a wireless detonator antenna which is an antenna which receives an energy for ignition, an energy for driving an electronic circuit and a control signal in a wireless manner, wherein the magnetic material has a thin cylindrical shape. When the axis of the cylindrical magnetic body is 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 having a conductive wire wound around the Z-axis; an X-axis sheet coil having a conductive wire wound around the X-axis; and a conductive coil having a conductive wire wound around the Y-axis. A sheet-shaped coil for Y-axis on which a wire is wound, and wherein the cylindrical coil for Z-axis, the sheet-shaped coil for X-axis, and the sheet-shaped coil for Y-axis 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 antenna for a radio detonator according to the fourth invention, wherein the Z-axis cylindrical coil comprises the X-axis sheet coil and the Y-axis sheet. This is a wireless detonator primer antenna disposed at a position sandwiched by the coil.

  Next, a sixth invention of the present invention is directed to a wireless detonator antenna according to any one of the first to fifth inventions, and connected to the wireless detonator antenna to ignite the detonator. And a detonating unit connected to the control unit.

  Next, a seventh aspect of the present invention provides a wireless detonator according to the sixth aspect, and an explosive charged with the wireless detonator attached thereto and charged into a charge hole drilled at a blasted location. An operation-side antenna stretched in the vicinity of the charging hole, and the ignition energy and the electronic circuit drive arranged in a wireless manner via the operation-side antenna that is disposed at a remote position away from the charging hole. And a control device for transferring the control signal and the control signal to the wireless detonator via the wireless detonator antenna.

  Next, an eighth invention of the present invention is the wireless detonating system according to the seventh invention, wherein the inner diameter of the wireless detonator antenna in the wireless detonator is larger than the outer diameter of the explosive. The explosive is a wireless detonation system that is inserted into the wireless detonator antenna, integrated with the wireless detonator antenna, and loaded into the charging 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 charging hole (that is, the Z-axis direction in FIG. 5), 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 the control signal (for example, the ID request signal, the power storage request signal, and the power storage) are most efficiently obtained. (Including a situation confirmation signal and a detonation execution signal) in a wireless manner.

  According to the second aspect, when the cylindrical magnetic body is arranged so that the axis thereof coincides with the axial direction of the charging hole (that is, the Z-axis direction in FIG. 5), in the example of FIG. At a charge position near the edge of the operation-side antenna 60 excluding the vicinity of the center (ie, a position where the magnitude of the magnetic field in the X-axis direction or the Y-axis direction is larger than the magnitude of the magnetic field in the Z-axis direction). The most efficient use of the magnetic field other than the Z-axis direction to receive the energy and the control signal (including, for example, the ID request signal, the power storage request signal, the power storage status confirmation signal, the detonation execution signal, etc.) in a wireless manner. It is possible to realize a wireless detonator primer antenna.

  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 the axis orthogonal to the axis of the cylindrical magnetic body are provided. . Thereby, depending on the position on the face, a wireless detonator antenna capable of efficiently receiving the energy and at least one of the cylindrical coil and the sheet-shaped coil and efficiently receiving a wireless control signal is provided. Can be realized.

  According to the fourth invention, a Z-axis cylindrical coil capable of efficiently receiving the energy with respect to the magnetic field component in the Z-axis direction in FIG. 5 and efficiently receiving a wireless control signal; An X-axis sheet-like coil capable of efficiently receiving the energy with respect to the magnetic field component in the X-axis direction in FIG. 5 and efficiently receiving a wireless control signal, and a magnetic field in the Y-axis direction in FIG. And a Y-axis sheet-like coil capable of efficiently receiving the energy with respect to the components and efficiently receiving a wireless control signal. be able to. Thus, it is not necessary to configure a different radio detonator antenna for each position on the face, and the charging hole drilled at any position on the face by one kind of radio detonator antenna. In addition, it is possible to realize a wireless detonator primer antenna that can receive the energy more efficiently and receive a wireless control signal more efficiently.

  According to the fifth aspect, in one Z-axis tubular coil and two sheet-shaped coils (X-axis sheet-shaped coil and Y-axis sheet-shaped coil) arranged along the first axis direction, Z The shaft cylindrical coil is arranged at the center. As a result of various experiments by the inventor, when the Z-axis tubular coil is arranged at the center, the energy and the control signal are received more efficiently than when the Z-axis tubular coil is arranged at the end. Confirmed that it can be done. Therefore, it is possible to realize a radio detonator antenna capable of more efficiently receiving the energy and the control signal, regardless of the charging hole drilled at any position on the face.

  According to the sixth aspect of the invention, for each of the charging holes cut out in the face, the energy can be more efficiently received and the wireless control signal can be efficiently received. A wireless detonator with an antenna can be realized.

  According to the seventh aspect of the invention, for each of the charging holes drilled on the face, the energy can be more efficiently received and the wireless control signal can be efficiently received. A wireless detonation system using a wireless detonator having an antenna can be realized.

  According to the eighth aspect, since the explosive can be inserted into the antenna for a wireless detonator, the explosive can be loaded to the innermost part of the charging hole, and the detonation efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view explaining the whole structure of the wireless detonation system for blasting a face in a tunnel excavation site. It is a figure explaining the state where the explosive charge unit was loaded in the charge hole drilled in the face. FIG. 4 is a diagram illustrating an example of a direction of a magnetic field generated around an operation-side antenna. It is a figure explaining the relationship between the position of each charging hole shown in FIG. 5, and the position of the operation side antenna. It is a figure explaining the example of the position of each charge hole, and the magnitude of the magnetic field of the Z-axis direction, the X-axis direction, and the Y-axis direction in each position. It is a perspective view explaining the whole structure of a wireless detonator. It is the figure which looked at the antenna for wireless detonators from the Z-axis direction. FIG. 3 is a cross-sectional view illustrating a state in which a control unit and a detonating unit are inserted into a radio detonator antenna to form a radio detonator. It is a figure explaining the example (the 1) of the wireless detonator which differs in the accommodation structure of the control part and the detonating part with respect to the wireless detonator shown in FIG. It is a figure explaining the example (the 2) of the radio detonator which differs in the accommodation structure of the control part and the detonation part with respect to the radio detonator shown in FIG. It is a perspective view explaining the antenna for wireless detonation primers comprised of the base cylinder, the cylinder magnetic body, the cylinder coil for the Z axis, the sheet coil for the X axis, and the sheet coil for the Y axis. 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 an external appearance of the antenna for radio detonators with the Z-axis cylindrical coil arranged at the center. It is a figure explaining the example of an external appearance of the antenna for wireless detonating primers which has arrange | positioned the cylindrical coil for Z-axis at the edge part (the left end part in the example of FIG. 14). It is a perspective view explaining the example of the antenna for wireless detonation primers comprised by the base cylinder, the cylinder magnetic body, the cylinder coil for Z axes, and the sheet coil for X axes. It is a perspective view explaining the example of the antenna for wireless detonation primers comprised by the base cylinder, the cylinder magnetic body, and the cylinder coil for Z-axis. It is a perspective view explaining the example of the antenna for wireless detonation primers comprised by the base cylinder, the cylindrical magnetic body, and the sheet-shaped coil for Y-axis. FIG. 3 is a perspective view of a Z-axis cylindrical coil in which a conductive wire is wound around the Z-axis. A sheet-like coil in which a conductive wire is wound so as to be wound around an axis orthogonal to the axis of the cylindrical magnetic body, wherein the X-axis sheet in which the conductive wire is wound around the X-axis It is a perspective view of a coil. A sheet-like coil in which a conductive wire is wound so as to be wound around an axis orthogonal to the axis of the cylindrical magnetic body, and a Y-axis sheet in which the conductive wire is wound around a Y-axis. It is a perspective view of a coil. It is a perspective view which shows the example (1) of the sheet-shaped coil which wound the conductive wire around each of two virtual axes. It is a perspective view which shows the example (2) of the sheet-shaped coil which wound the conductive wire around each of two virtual axes. It is a perspective view which shows the example (3) of the sheet-shaped coil which wound the conductive wire around each of two virtual axes. FIG. 2 is a circuit block diagram illustrating a configuration of a wireless detonator.

  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 indicates a tunnel excavation direction. The horizontal direction indicates the axial direction of the charging hole 40 facing in the opposite direction.

● [Overall configuration of wireless detonation system 1 (FIG. 1) and state of loading explosive unit 20 into charging hole 40 (FIG. 2)]
As shown in FIG. 1, the wireless detonation system 1 is configured such that an explosive unit 20 (see FIG. 2) to be charged into a charging hole 40 drilled in a face face 41 (a portion to be blasted) is separated from the charging hole 40. And a control signal (for example, an ID request signal, a power storage request signal, a power storage status confirmation signal, a detonation execution signal) and a current for generating a magnetic field around the operation side antenna. (Including signals, etc.), and an operation-side antenna 60 stretched in the vicinity of the face face 41 (charging hole).

  The detonating operation device 50 supplies a current to the operation-side antenna 60 via the blasting bus 62 and the auxiliary bus 61 to generate a magnetic field around the operation-side antenna 60 and superimpose a control signal. Accordingly, the detonating operation device 50 transmits the energy for ignition, the energy for driving the electronic circuit, and the control signal in a wireless manner via the operation-side antenna 60 via the wireless detonator antenna 11 to be described later. Is transferred to the control unit and the detonation unit. The frequency of the current flowing through the operation-side antenna 60 for generating the magnetic field and the operation frequency, which is the frequency of the control signal, are set, for example, to 100 kHz or more and 500 kHz or less. If the operation frequency is higher than 500 [KHz], a standing wave is easily generated in the tunnel, which is not preferable. In addition, the detonating operation device 50 receives a wireless response signal from the wireless detonator via the operation-side antenna 60, the auxiliary bus 61, and the blast bus 62. The response frequency, which is the frequency of the response signal from the wireless detonator, is set to, for example, 10 [MHz].

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

  As shown in FIG. 2, the charging hole 40 is a hole formed by cutting the diameter D1 to about 5 [cm] and the depth D2 to about 2 [m], for example. Absent. Then, as shown in FIG. 2, the explosive unit 20 is loaded in the charging hole 40, and is covered with a filling 22 such as clay. The explosive unit 20 includes a parent die 201 and an additional die 202. The parent die 201 is formed by attaching the wireless detonator 10 to the additional die 202. The parent die 201 is the first explosive to be loaded into the charging hole 40 and is the explosive to which the wireless detonator 10 is attached. 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 which only the parent die 201 or an additional die 202 is added to the parent die 201.

  As shown in FIG. 2, the wireless detonator 10 includes a substantially cylindrical wireless detonator antenna 11, a control unit 12, and a detonating unit 14. For example, the control unit 12 and the detonating unit 14 It is housed in a radio detonator antenna 11. Further, the inner diameter of the substantially cylindrical wireless detonator antenna 11 is formed larger than the outer diameter of the explosive. The explosive is inserted into the radio detonator antenna 11 and the detonating part 14 is inserted therein. The explosive is integrated with the radio detonator antenna 11 to form a parent die 201 and is loaded in the charging hole 40. The outer diameter of the radio detonator antenna 11 is smaller than the inner diameter of the charging hole 40. In addition, as shown in the example of FIG. 10, only the detonating unit 14 may be housed in the radio detonator antenna 11, and the control unit 12 may be arranged outside the radio detonator antenna 11.

  The display device 72 displays individual information (for example, an explosion delay time and an identification number) by which an operator can identify the wireless detonator 10, and is attached to the wireless detonator 10 via a cable 71. . The length of the cable 71 is set to a length that allows the display device 72 to reach outside the charging hole 40 when the parent die 201 is loaded into the charging hole 40. Therefore, as shown in FIG. 2, when the parent die 201 is loaded in the charging hole 40, the display device 72 is disposed outside the charging hole 40. Note that 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 wireless detonator, the operator cannot check the display device after loading it into the charging hole, but it is necessary to check the display device when loading it into the charging hole while loading. Can be.

● [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 arrow, a magnetic field is generated as indicated by a chain line. When the direction of the magnetic field is set as an axis and the conductive wire is wound around the axis, the wireless detonator antenna 11 most efficiently receives the energy for ignition and the energy for driving the electronic circuit. (In this specification, “energy for ignition or energy for driving an electronic circuit” is referred to as “the energy”), and a wireless control signal can be received.

  FIG. 4 is a diagram of FIG. 3 viewed from the IV direction. With respect to the wound operation-side antenna 60, the position of the charging hole in the face face 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 a charging position P1a, and the position corresponding to the edge of the operation-side antenna 60 is the charging position. The upper right position of P2b is indicated by the 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 the charging position P1b. Further, a position corresponding to the edge of the operation-side antenna 60 and a position to the left of the charging position P2b is indicated by a charging position P2a. The position on the right side of the position P2b is indicated by a charge position P2c. The position corresponding to the edge of the operation-side antenna 60 and the lower left position of the charging position P2b is indicated by a charging position P3a. 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 lower than the charging position P2b is indicated by a charging position P3b.

  FIG. 5 shows the magnetic field (the magnetic field 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 on the face face 41 shown in FIG. FIG. 5 is a diagram showing an example of the direction and size of the image. At the charging position P2b substantially corresponding to the center of the operation side antenna 60, since the component of the magnetic field is only in the Z-axis direction, an antenna having a conductive wire wound around the Z-axis (in the example of FIG. The energy can be efficiently received by the coil 119 and the Z-axis cylindrical antenna made of the cylindrical magnetic material. However, near 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 increase. For example, at the charging position P3c, the magnitude of the magnetic field in the Z-axis direction is smaller than that of the charging position P2b, and the magnitude of the magnetic field in the X-axis direction and the magnitude of the magnetic field in the Y-axis direction are greater than the magnitude of the magnetic field in the Z-axis direction. At the charging position P1b, the magnitude of the magnetic field in the Z-axis direction is smaller than that of 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, at the charging positions P1a to P1c, the charging position P2a, the charging position P2c, and the charging positions P3a to P3c, which are the positions of the edges of the operation-side antenna 60, the antenna in which the conductive wire is wound around the Z axis. (In the example of FIG. 6, the Z-axis cylindrical coil 119 and the Z-axis cylindrical antenna formed of a cylindrical magnetic material) alone can efficiently receive the energy and efficiently receive the wireless control signal. Not exclusively. Therefore, by using the radio detonator antenna 11 described below, even if the radio detonator antenna is placed (loaded) in a charge hole drilled at any position on the face surface 41, The present invention realizes a wireless detonator primer antenna 11 that can receive the energy efficiently and efficiently receive a wireless control signal.

● [Structure of the radio detonator 10 (FIGS. 6 to 10)]
FIG. 6 is an exploded perspective view of the wireless detonator 10. The radio detonator 10 comprises a radio detonator antenna 11, a control unit 12 connected to the radio detonator antenna 11 and igniting a detonating unit 14, and a detonating unit 14 connected to the control unit 12. Have been. FIG. 7 is a view of the wireless detonating primer 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 cylinder 114 (for example, a cylindrical acrylic material) and a sheet-shaped magnetic body (for example, ferrite) around the outer periphery of the base cylinder 114 so as to form a thin cylinder. The turned cylindrical magnetic body 115 (see FIG. 11), a cylindrical coil (Z-axis cylindrical coil 119) provided on the outer periphery of the cylindrical magnetic body 115, and a sheet coil 117 (X-axis sheet coil 117X) And the Y-axis sheet coil 117Y) are 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, which are arranged along 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 have any shape such as a circle, an ellipse, and a polygon. There may be. The wireless detonator antenna 11 and the control unit 12 are connected by a conductive wire 111.

  FIG. 8 is a cross-sectional view of the wireless detonator 10 in which the control unit 12 and the detonating unit 14 are housed in the wireless detonator antenna 11. A detonating unit 14 is fixed to the control unit 12, and the control unit 12 is fixed to one opening of the antenna 11 for a wireless detonator. It is preferable that the gap between the radio detonator antenna 11 and the control unit 12 is filled with an explosive. As a result, the explosive can be arranged as far as the innermost of the charging hole, so that the crushing effect can be improved. The explosive portion 14 is fixed so as to extend toward the other opening, and when an explosive is inserted from the other opening, the explosive portion 14 is inserted into the tip of the inserted explosive, forming a parent die. .

  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 a control unit 12 and a detonating unit 14 are accommodated in a wireless detonator antenna 11. In the example shown in FIG. 9, the wireless detonating primer antenna 11, the cylindrical magnetic body 115, and the base cylindrical body 114 are coaxially arranged and formed in a cylindrical shape. The control unit 12 to which the detonating unit 14 is fixed is fixed to one opening by, for example, an adhesive 161. The control unit 12 includes a control case 162, an electronic circuit 164 (the electronic circuit indicated by reference numeral 12 in FIG. 24), a buffer 163, and the like. The explosive portion 14 is fixed so as to extend toward the other opening, and when an explosive is inserted from the other opening, the explosive portion 14 is inserted into the tip of the inserted explosive, forming a parent die. . Also, 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 charging hole is detonated is generated by the electronic wave. It may be attenuated by the control case 162 and the cushioning material 163 before being transmitted to the circuit 164 so that the electronic circuit 164 is not damaged.

  FIG. 10 shows an example of a cross-sectional view of a radio detonator 10B in which the detonating unit 14 is accommodated in the radio detonator antenna 11 and the control unit 12 is disposed outside the radio detonator antenna 11. In the example shown in FIG. 10, the one in which the wireless detonator antenna 11, the cylindrical magnetic body 115, and the base cylinder 114 are coaxially arranged is further housed in a cylindrical protective case 165. Further, the protective case 165 has an isolation wall 166 that isolates the control unit 12 from the detonating unit 14 and the explosive. The control unit 12 is disposed on the side opposite to the detonating unit 14 with the isolation wall 166 interposed therebetween, and not inside the wireless detonator antenna 11 but outside the wireless detonator antenna 11. The control unit 12 may be fitted and fixed in one opening of the protection case 165, or may be fixed to one opening of the protection 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 12 includes a control case 162, an electronic circuit 164, a cushioning material 163, and the like. As in the example of FIG. 9, the detonating portion 14 is fixed so as to extend to the side of the other opening, and when the explosive is inserted from the other opening, the detonating 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, a shock wave generated when an explosive disposed in an adjacent charging hole detonates is transmitted to the control case 162 before being transmitted to the electronic circuit 164. 162 and the damping material 163 so that the electronic circuit 164 is not damaged. Further, by disposing a part of the control case 162 outside the wireless detonating primer antenna 11, the size of the electronic circuit 164 can be made larger than the inner diameter of the base cylinder 114, and the size of the electronic circuit 164 can be reduced. The degree of freedom is improved. Further, the area through which the explosive is inserted is enlarged, and the crushing effect can be improved.

● [Structure of radio detonator primer antenna 11 (FIGS. 11 to 17)]
FIG. 11 is an exploded perspective view of the wireless detonator antenna 11. The wireless detonator antenna 11 is an antenna that receives energy for ignition, energy for driving an electronic circuit, and a control signal in a wireless manner. The radio detonator antenna 11 includes a base cylinder 114, a tubular magnetic body 115, an X-axis sheet coil 117X, a Z-axis cylinder coil 119, and a Y-axis sheet coil 117Y. It is configured. In addition, 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 poles are relatively easily lost or reversed among the magnetic bodies, such as iron, silicon steel, permalloy, sendust, permendur, and ferrite. , An amorphous magnetic alloy, a nanocrystal magnetic alloy, and the like are preferable. In the present 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 have 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 with the other end and to have an overlap portion 171. The body 115 may be wound so as to be double or triple. The gap 172 shown in FIG. 12 is within an allowable range if it is a minute gap of, for example, about 1 [mm]. However, it is not preferable that the gap 172 is a gap larger than the minute gap. The antenna axis J11, which is the axis of the cylindrical magnetic body 115, is parallel to the Z axis and can be said to be the Z axis, as shown in FIGS.

  Then, as shown in FIG. 11, the Z-axis cylindrical coil 119, the X-axis sheet coil 117X, and the Y-axis sheet coil 117Y are mounted coaxially with the base cylinder 114 and the cylindrical magnetic body 115. As a result, a wireless detonator primer antenna 11 is formed. The wireless detonator antenna 11 is loaded into the charging hole such that the antenna axis J11 which is the axis of the wireless detonating antenna 11 coincides with the axial direction of the charging hole 40 (in this case, the Z-axis direction). You. Then, 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 made of the cylindrical magnetic material are used. Thus, the energy can be efficiently received, and the wireless control signal can be efficiently received. In addition, with respect to the magnetic field of the component in the X-axis direction in FIG. It is possible to efficiently receive the energy and efficiently receive a wireless control signal. Further, with respect to the magnetic field of the component in the Y-axis direction in FIG. 5, the Y-axis sheet-like coil 117Y having the Y-axis direction as the winding axis of the conductive wire and the Y-axis sheet-like antenna made of a cylindrical magnetic material It is possible to efficiently receive the energy and efficiently receive a wireless control signal. Note that the example shown in FIG. 11 includes a base cylinder 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. Although the example in which the radio detonator antenna 11 is configured is shown, the base cylinder 114 may be omitted.

  The radio detonator primer 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 antenna made of a cylindrical magnetic material, and a Y-axis. The three sheet-shaped antennas 117Y and the Y-axis sheet-shaped antenna made of a cylindrical magnetic material are arranged in any order along the Z-axis direction so as not to overlap. According to the results of various experiments by the inventor, the Z-axis tubular coil 119 is arranged at the center (the position where the Z-axis tubular 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 arrangement in which the Z-axis tubular coil 119 is arranged at the center includes the arrangement in the order of (117X, 119, 117Y) shown in FIG. 13 and the rotation of 90 [°] around the Z-axis from the state shown in FIG. (117Y, 119, 117X). As shown in the example of FIG. 14, the Z-axis cylindrical coil 119 is arranged at the left end (119, 117X, 117Y), and although not shown, (119, 117Y, 117X), and The Z-axis tubular coil 119 may be arranged at the right end (117X, 117Y, 119) or (117Y, 117X, 119).

  The radio detonator primer antenna 11 is connected to a Z-axis tubular coil 119 (cylindrical coil), an X-axis sheet coil 117X (sheet coil), and a Y-axis sheet coil 117Y (sheet coil). Instead of being composed of one coil and a cylindrical magnetic body, it may be composed of at least one coil of a cylindrical coil or a sheet-like coil and a cylindrical magnetic body. In this case, for the charging position P2c shown in FIG. 5, the Z-axis cylindrical coil 119, the X-axis sheet coil 117X, the base cylindrical body 114, and the cylindrical magnetic body 115 as shown in the example of FIG. Thus, the radio detonator antenna 11C may be configured (however, the base cylinder 114 may be omitted). In the example of FIG. 5, for the charging position P2b, for example, 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 a radio detonator. The antenna 11A may be configured (however, the base cylinder 114 may be omitted). Also, for the charging position P1b shown in FIG. 5, as shown in the example of FIG. 17, the Y-axis sheet coil 117Y, the base cylinder 114, and the cylindrical magnetic body 115 are used to connect the radio detonator antenna 11B. It may be configured (however, the base cylinder 114 may be omitted). That is, according to the position of the charging hole, an antenna having an axis in a direction in which the component of the (magnetic) field is largest at that position is configured. In this case, it is more preferable that the winding axis of the conductive wire of the antenna coincides with the direction of the magnetic field at that position, not limited to the X, Y, and Z axes.

  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. The body 114 may be omitted). 15, the Z-axis cylindrical coil 119 and the X-axis sheet coil 117X may be changed to the Z-axis cylindrical coil 119 and the Y-axis sheet coil 117Y. , The X-axis sheet coil 117X and the Y-axis sheet coil 117Y. In this way, a different radio detonator antenna is selected for each position of the charging hole on the face, and the energy can be more efficiently received and wirelessly received at each of the charging holes cut on the face. Can be realized.

● [Structures 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 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. 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 by winding the conductive wire 111 around the Z-axis. Although FIG. 18 illustrates 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 the cylindrical body 112 to form a cylindrical coil. Further, from the state of the exploded perspective view of FIG. 16, the Z-axis cylindrical coil 119 (corresponding to the cylindrical coil) is coaxial with the thin cylindrical magnetic body 115 (in this case, coaxial with the Z axis). By forming the whole on the outer peripheral surface of the cylindrical magnetic body 115 so as to form a cylindrical shape, a wireless detonator antenna 11A (Z-axis cylindrical antenna) can be formed.

  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 117 </ b> X has a sheet shape in which the conductive wire 111 is wound around each of the parallel virtual axes JNA and JNB, and is orthogonal to each of the virtual axes JNA and JNB. After being formed as the coil 116 formed as shown in FIG. 19, the sheet coil is formed in a cylindrical shape so that the virtual axes JNA and JNB are coaxial as shown in FIG. As shown in FIG. 19, the X-axis sheet coil 117X has the virtual axes JNA and JNB (see FIG. 21) curved so as to be coaxial, and the coaxial virtual axes JNA and JNB are parallel to the X axis. It is arranged so that it becomes. That is, the X-axis sheet coil 117X is a sheet coil in which the conductive wire 111 is wound around the X axis. As shown in FIG. 21, a coil formed in a sheet shape by winding the conductive wire 111 on the sheet 113 may be formed, or a coil formed in a sheet shape by winding the conductive wire 111 without providing the sheet 113 may be used. Is also good. Further, in the exploded perspective view shown in FIG. 17, the Y-axis sheet coil 117Y is replaced with the X-axis sheet coil 117X, and curved from the state of the exploded perspective view along the outer peripheral surface of the cylindrical magnetic body 115. The X-axis sheet-shaped coil (corresponding to the sheet-shaped coil) is provided on the outer peripheral surface of the thin cylindrical cylindrical magnetic body 115, and the whole is formed in a cylindrical shape. X-axis sheet antenna). At this time, the X-axis sheet coil has a conductive wire wound around an axis (in this case, the X-axis) orthogonal to the axis (the Z-axis) of the cylindrical magnetic body 115. As an example of the sheet-shaped 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 117 </ b> Y has a sheet shape in which the conductive wire 111 is wound around each of the parallel virtual axes JNA and JNB, and is orthogonal to each of the virtual axes JNA and JNB. After being formed as the formed coil 116, as shown in FIG. 20, it is a sheet-like coil formed in a tubular shape so that the virtual axes JNA and JNB are coaxial. 20, the virtual axes JNA and JNB (see FIG. 21) are curved so as to be coaxial, and the coaxial virtual axes JNA and JNB are parallel to the Y axis, as shown in FIG. It is arranged so that it becomes. That is, the Y-axis sheet coil 117Y is a sheet coil in which the conductive wire 111 is wound around the Y axis. As shown in FIG. 21, a coil may be formed by winding the conductive wire 111 on the sheet 113 to form a sheet. Alternatively, the coil may be formed by winding the conductive wire 111 without providing the sheet 113. Is also good. In the exploded perspective view shown in FIG. 17, a Y-axis sheet-shaped coil (corresponding to a sheet-shaped coil) curved from the state of the exploded perspective view along the outer peripheral surface of the cylindrical magnetic body 115 is thinned. The antenna for a wireless detonator (the sheet-shaped antenna for the Y-axis) can be configured by providing the outer surface of the cylindrical magnetic body 115 having a cylindrical shape and forming the entire cylindrical shape. At this time, the Y-axis sheet coil has a conductive wire wound around an axis (in this case, the Y axis) orthogonal to the axis (the Z axis) of the cylindrical magnetic body 115. As an example of the sheet-shaped 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 sheet coil 117Y for the Y axis is obtained by turning the sheet coil 117X for the X axis 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, when the cylindrical magnetic body 115 is provided. It is possible to more efficiently receive the energy for ignition, the energy for driving the electronic circuit, and the control signal as compared with the case where it is provided on the inner peripheral surface. In the description of the present embodiment, as shown in FIGS. 19 and 20, etc., the winding of the conductive wire 111 in the X-axis sheet coil 117X and the Y-axis sheet coil 117Y is a rectangular winding. However, the shape of the winding is not limited to a rectangular shape, and may be a spiral (spiral) or various polygonal shapes. Moreover, you may wind so that various shapes may be mixed. In addition, the Z-axis tubular coil, the X-axis sheet coil, and the Y-axis sheet coil may be created by a worker manually winding the conductive wire 111 a predetermined number of times.

● [Circuits in the control unit 12 and the detonation unit 14 of the wireless detonator 10 (FIG. 24)]
Next, a circuit in the control unit 12 and a circuit in the detonating unit 14 of the wireless detonator 10 will be described with reference to a circuit block diagram shown in FIG. FIG. 24 shows the respective circuits (block diagrams) of the control unit 12 and the detonating unit 14, including the wireless 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, It comprises a Y-axis sheet coil 117Y and a Y-axis sheet antenna made of a cylindrical magnetic material. The X-axis sheet coil 117X is connected to a switch module 124 via a tuning circuit 121 including a variable capacitor or the like. Similarly, the Z-axis cylindrical coil 119 is connected to a switch module 124 via a tuning circuit 122 including a variable capacitor and the like. Similarly, the Y-axis sheet coil 117Y is connected to a switch module 124 via a tuning circuit 123 formed by a variable capacitor or the like. As described above, 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, and 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, an explosive power storage device 136, and an electronic circuit drive. It comprises a power storage device 127, a power storage state detection circuit 137, an explosion switch circuit 138, a rectifier circuit 126, a power storage switch circuit 135, and the like. Each of the tuning circuits 121, 122, and 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. And so on.

  The switch module 124 has its switch state switched by a control signal 154 from the CPU 131. When the wireless detonator antenna 11 receives the energy or receives the 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. I do. The route 151 is a route for taking in the received control signal, and the route 152 is a route for rectifying, storing, and converting the received energy to a constant voltage. Then, the wireless control signal (including the ID request signal, the power storage request signal, the power storage status confirmation signal, the detonation execution signal, and the like) received via the path 151 and the detection / demodulation circuit 125 is taken into the CPU 131, and the path 152 The energy having passed 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. When the control signal instructs the storage of energy for detonation, the state of the power storage switch circuit 135 is switched by the control signal 155 of the CPU 131, and the energy for detonation is stored in the detonation power storage device 136. You. This can prevent the energy for detonation from being stored in the detonating power storage device 136 without permission. When the CPU 131 transmits a wireless signal, the switch module 124 transmits the signal transmitted from the CPU through the modulation circuit 133 and the transmission circuit 134 through the path 153 and the tuning circuit 121 based on the control signal 154 from the CPU 131. It is connected to at least one of the X-axis sheet coil 117X, the Z-axis cylindrical coil 119 via the tuning circuit 122, and the Y-axis sheet coil 117Y 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.

  The ID storage device 132 stores identification information unique to the wireless detonator 10. Upon receiving the ID request signal (control signal), the CPU 131 transmits a response signal including the identification information read from the ID storage device 132.

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

  The detonating section 14 has an ignition circuit 141, an ignition ball 142, an explosive 143, an additive 144, and the like. When the ignition switch circuit 138 is short-circuited, the ignition circuit 141 is supplied with electric power (energy) from the energy storage device 136 to ignite the ignition ball 142. Then, when the ignition ball 142 is ignited, the priming charge 143 and the auxiliary charge 144 are ignited, and the priming portion 14 is ignited. When the detonating section 14 is ignited, the parent die 201 shown in FIG. 2 is detonated.

  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 efficiently receive the energy and receive a wireless control signal, the number of turns of the operation-side antenna 60 can be reduced to once or several times. Then, by supplying the current of the operation frequency to the operation-side antenna 60, power is supplied to the control unit 12 of the wireless detonator 10 and energy for ignition is stored. The power supplied to the operation-side antenna 60 for power supply and power storage to the control unit 12 can be relatively small power of several tens [W] to several hundred [W]. Further, the wireless detonator is controlled by a control signal (including, for example, an ID request signal, a power storage request signal, a power storage status confirmation signal, a detonation execution signal, and the like) superimposed on the current.

  In addition, by setting the frequency of a signal responding from the wireless detonator 10 to 1 [MHz] or more and 10 [MHz] or less, the length of the operation-side antenna 60 also increases once along the cave bed, the cave side, and the cave ceiling. Alternatively, the length may be about several turns. Further, the operation-side antenna 60 can transmit the transmission signal and receive the response signal, and does not require an antenna dedicated to transmitting the transmission signal and a dipole antenna dedicated to receiving the response signal. For example, when the response frequency from the wireless detonator is 10 [MHz], the length of the receiving antenna of the detonator is a length not exceeding the response frequency wavelength λ (30 [m] in this case). It is preferable that the operation-side antenna having one or several turns can also be used. In addition, the radio detonator antenna 11 does not need to separately prepare a transmission-only antenna and a reception-only antenna, and the transmission antenna for transmitting a response signal transmitted from the radio detonator 10 to the detonator 50 is a radio detonator. The antenna 11 can also be used.

  In addition, the radio detonating primer antenna 11 described in the present embodiment can receive the energy efficiently from the magnetic field in the Z-axis direction and can receive the radio control signal. 119, a Z-axis cylindrical antenna made of a cylindrical magnetic body, an X-axis sheet coil 117X and a cylinder capable of efficiently receiving the energy from the magnetic field in the X-axis direction and receiving a wireless control signal. Sheet-shaped antenna for X-axis made of sheet-shaped magnetic material, sheet-shaped coil 117Y for Y-axis, which can receive the energy efficiently from the magnetic field in the Y-axis direction and can receive a wireless control signal, and a cylindrical magnetic material And a sheet-shaped antenna for the Y-axis. For this reason, the charging hole 40 cut at any position on the face surface 41 shown in FIG. 1 can more efficiently receive the energy and receive a wireless control signal. Further, as shown in FIG. 2, by inserting the explosive into the cylindrical wireless detonator primer antenna 11, it becomes possible to load more explosive into the charging hole, thereby improving the detonation 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 are possible.

  The winding axis of the conductive wire in the X-axis sheet coil 117X (the 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 (the cylindrical magnetic coil). Perpendicular to the body axis). The winding axis of the conductive wire in the sheet coil 117Y for Y-axis (the axis orthogonal to the axis of the cylindrical magnetic body) is the axis of winding of the conductive wire in the cylindrical coil 119 for the Z-axis (the cylindrical magnet). (The axis of the body), and is orthogonal to the axis of winding the conductive wire in the X-axis sheet coil 117X.

  In addition, the radio detonator antenna 11, the radio detonator 10, and the radio detonation system 1 described in the present embodiment are not limited to tunnel excavation sites, and can be applied to blasts at various sites.

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

  The wireless detonating primer antenna 11 described in the present embodiment is different from a conventional antenna in which only the Z-axis cylindrical antenna is disposed in the charging hole along the Z-axis direction, in comparison with the energy for ignition and the electronic circuit. The driving energy and the like can be received “more efficiently”, and the wireless control signal can be more efficiently received. Note that “efficiently” means that in the conventional antenna, for example, at the edges of the operation side antenna at the charging positions P1a, P1c, P3a, P3c and the like shown in the example of FIG. In rare cases, when the energy could not be sufficiently received, or when the wireless detonation signal could not be received, the radio detonator antenna of the present embodiment, as a result of many experiments by the inventor, showed that The case where the energy or the energy for driving the electronic circuit cannot be sufficiently received, or the case where the wireless detonation signal cannot be received includes the meaning that it has never occurred. In other words, "can be efficiently received" and "can be efficiently received" by the radio detonator primer antenna 11 described in the present embodiment means that the ignition energy or the electron energy is higher than that of the conventional antenna. Energy for driving the circuit and the like are “can be received more reliably”, and include the meaning that “the wireless ignition signal can be more reliably received”.

REFERENCE SIGNS LIST 1 wireless detonation system 10, 10A, 10B wireless detonator 11, 11A, 11B, 11C wireless detonator antenna 111 conductive wire 112 cylinder 113 sheet 114 base cylinder 115 cylindrical magnetic body 116 sheet-shaped coil 117 sheet-shaped 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 Electric 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 Explosion power storage device 137 Power storage state detection circuit 138 Explosion switch circuit 14 Explosion part 141 Ignition circuit 142 Ignition ball 143 Explosive agent 144 Explosives 151, 152, 153 Path 154 Control signal 155 Control signal 156 Control signal 161 Adhesive 162 Control case 163 Buffer material 164 Electronic circuit 165 Protective case 166 Separation wall 171 Overlap section 172 Gap 20 Explosive unit 201 Parent die 202 Augmented die 22 Charge 40 Charge Hole 41 Face (Bombed area)
42 Cave floor 43 Cave side wall 44 Cave ceiling 50 Detonation operation device 60 Operation 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 to P1c , P2a to P2c, P3a to P3c Charge position

Claims (8)

An antenna for a wireless detonator that is an antenna that receives energy for ignition, energy for driving an electronic circuit, and a control signal in a wireless manner,
A cylindrical magnetic body in which the magnetic body has a thin cylindrical shape,
Having a cylindrical coil wound with a conductive wire so as to be wound around the axis of the cylindrical magnetic body,
On the outer peripheral surface of the cylindrical magnetic body, the cylindrical coil is provided, the whole is formed in a cylindrical shape ,
A cylindrical shape having an inner diameter larger than the outer diameter of the explosive to be attached is configured to be able to penetrate the explosive,
Wireless detonator antenna. An antenna for a wireless detonator that is an antenna that receives energy for ignition, energy for driving an electronic circuit, and a control signal in a wireless manner,
A cylindrical magnetic body in which the magnetic body has a thin cylindrical shape,
Having a sheet-shaped 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,
On the outer peripheral surface of the cylindrical magnetic body, the sheet-shaped coil is provided, the whole is formed in a cylindrical shape ,
A cylindrical shape having an inner diameter larger than the outer diameter of the explosive to be attached is configured to be able to penetrate the explosive,
Wireless detonator antenna. An antenna for a wireless detonator that is an antenna that receives energy for ignition, energy for driving an electronic circuit, 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,
Having a sheet-shaped coil wound with a conductive wire so as to be wound around an axis orthogonal to the axis of the cylindrical magnetic body,
On the outer peripheral surface of the cylindrical magnetic body, the cylindrical coil and the sheet-shaped coil are provided so as not to overlap, and the whole is formed in a cylindrical shape ,
A cylindrical shape having an inner diameter larger than the outer diameter of the explosive to be attached is configured to be able to penetrate the explosive,
Wireless detonator antenna. An antenna for a wireless detonator that is an antenna that receives energy for ignition, energy for driving an electronic circuit, 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 coil in which a conductive wire is wound around the X-axis;
And a Y-axis sheet-like coil around 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 with each other. It is formed in a cylindrical shape ,
A cylindrical shape having an inner diameter larger than the outer diameter of the explosive to be attached is configured to be able to penetrate the explosive,
Wireless detonator antenna. A radio detonator primer 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 radio detonator according to any one of claims 1 to 5,
A control unit connected to the wireless detonator antenna and igniting the detonating unit;
And the detonating unit connected to the control unit,
Wireless detonator. A wireless detonator according to claim 6;
Said wireless detonator detonator attached, and the explosive loaded in charge holes are drilled into the blasting location,
An operation-side antenna stretched in the vicinity of the charging hole;
The energy for ignition, the energy for driving the electronic circuit, and the control signal are transmitted in a wireless manner via the operation-side antenna disposed at a remote position away from the charging hole and the control signal through the antenna for the wireless detonator. A detonation operating device to be delivered to the wireless detonator,
Wireless detonation system. The wireless detonation system according to claim 7,
The outer diameter of the cylindrical radio detonator antenna has a diameter equal to or less than the inner diameter of the charging hole,
The explosive is inserted into the radio detonator antenna and integrated with the radio detonator antenna, and is loaded into the charging hole.
Wireless detonation system.

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