JP2021076312A - Radio detonation system and installation method for radio detonation system - Google Patents

Abstract

To provide a low cost radio detonation system.SOLUTION: A radio detonation system 1 includes a primer detonator 10, and a power feeding device 30 for supplying driving energy to the primer detonator 10. The primer detonator 10 includes a reception coil 12 for receiving the driving energy transmitted from the power feeding device 30, and a power storage element 26 for charging the received driving energy. The primer detonator 10 further includes a primer detonator side control circuit 21 for transmitting a charge completion signal when charging of the power storage element 26 is completed, and a light emitting element 14 for emitting light based on the charge completion signal. The power feeding device 30 includes an electricity transmission coil 32 for transmitting the driving energy in electromagnetic induction type. The power feeding device 30 further includes a light receiving element 33 for detecting light emitted by the light emitting element 14, and a power feeding device side control circuit 35 for recognizing charge completion of the power storage element 26 based on the signal from the light receiving element 33.SELECTED DRAWING: Figure 6

Description

The present invention relates to a wireless detonation system and a method for installing a wireless detonation system used at an excavation site such as a tunnel, a crushing site such as rock, or a crushing site of a structure such as a building.

The radio detonator system used for blasting work at a tunnel excavation site or the like has a radio detonator and a detonator. The radio detonator detonator is loaded together with the explosive into a plurality of charge holes drilled from the face surface, which is the excavation surface, in the excavation direction. The charge hole has, for example, a diameter of several cm and a depth of about several m. The detonation manipulator will be installed in a remote location away from the face.

The wireless detonator system of Patent Document 1 has a transmitting antenna and a receiving antenna on the operating device side, and a transmitting antenna and a receiving antenna on the detonating light tube side. The transmitter antenna on the operating device wirelessly transmits a control signal including driving energy and a detonating signal from the detonator to the wireless detonator detonator. The wireless detonator detonator receives driving energy and control signals from the detonator operating device via the receiving antenna on the detonator detonator side. The driving energy is stored in the power storage element of the wireless detonator detonator. The radio detonator detonator transmits a response signal including its own operating state based on the control signal via a transmission antenna on the detonator detonator side by radio waves. The receiving antenna on the operating device side receives a response signal from the wireless detonator detonator to the detonating operating device and recognizes that charging is complete. The detonator sends a detonation signal to the radio detonator detonator, and the radio detonator detonator detonates the explosive.

International Publication No. 2017/183662 JP-A-2019-80391 Japanese Unexamined Patent Publication No. 2019-54560 Japanese Unexamined Patent Publication No. 2013-38961

Since the wireless detonator detonator is detonated each time it is detonated, it is desirable to use a small number of parts or inexpensive parts. Therefore, a low-cost wireless detonation system has been conventionally required.

According to one feature of the present disclosure, the wireless detonator system includes a detonator detonator and a power supply device that supplies driving energy to the detonator detonator. The detonator detonator has a receiving coil that receives the driving energy transmitted from the power feeding device, and a charger that charges the received driving energy. Further, the detonator detonator has a detonator side control circuit that emits a charge completion signal when charging of the charger is completed, and a light emitter that emits light based on the charge completion signal. The power feeding device has a power transmission coil that transmits driving energy by an electromagnetic induction method. Further, the power feeding device includes a light receiving device that detects the light emitted by the light emitter, and a power feeding device side control circuit that recognizes the completion of charging of the charger based on the signal from the light receiving device.

Therefore, the detonator detonator transmits a response signal to the power feeding device by an optical signal. On the other hand, the conventional wireless detonator detonator transmits a response signal by radio waves to the power feeding device. The light emitter and the receiver are simpler than the transmission / reception circuit and the transmission / reception antenna that transmit and receive by radio waves. Therefore, the cost of the detonator detonator that is consumed for each detonation can be reduced. Moreover, the transmission of optical signals requires less energy than the transmission of radio waves. Therefore, the driving energy required for the charger is small, and the charger can be charged in a short time.

Patent Documents 2 to 4 disclose a technique for supplying electric power in a wireless manner. Patent Documents 2 to 4 disclose an electric device including a charging device that transmits electric power wirelessly and a battery that wirelessly receives and stores electric power from the charging device. The charging device and the electric device have an optical communication device that transmits and receives a signal by light. These electric devices are general electric devices that are repeatedly charged, and are not consumable parts. On the other hand, the wireless detonator detonator of the present disclosure is a consumable part that is blown up in each detonation process, and the number of times of charging is basically one. Therefore, it is not easy to apply the techniques of Patent Documents 2 to 4 to a radio detonator.

According to another feature of the present disclosure, the power transmission coil is configured to transmit not only driving energy but also radio waves including a detonation preparation signal. Radio waves are received by the receiving coil. The detonator detonator has a detection / demodulation circuit that detects a detonation preparation signal from radio waves. Therefore, the receiving coil is used for both receiving the driving energy and receiving the radio wave including the detonation preparation signal. This simplifies the receiving system for the detonator detonator. For example, it does not require a separate antenna to receive the detonation readiness signal. Thus, the cost of the detonator detonator, which is a consumable part, can be further reduced.

According to another feature of the present disclosure, it has a transmitting antenna that emits radio waves including a detonation signal. The receiving coil receives radio waves including the detonation signal. The detection / demodulation circuit detects the detonation signal from the radio waves. Therefore, the receiving coil of the detonator detonator receives the driving energy and the detonation preparation signal at the time of charging, and receives the detonation signal at the time of detonation. The detection / demodulation circuit detects the detonation preparation signal at the time of charging and detects the detonation signal at the time of detonation. Therefore, the detonator detonator becomes simpler by standardizing the parts.

According to another feature of the present disclosure, the detonator detonator has a detonator body in which a receiving coil is wound along the outer peripheral surface. The power feeding device has a tubular body into which the detonator body is inserted and the power transmission coil is located outside the receiving coil. Therefore, when the detonator body is inserted into the cylinder body, the receiving coil approaches the power transmission coil. As a result, driving energy is efficiently supplied from the power transmission coil to the reception coil. Thus, the charging time can be shortened.

According to another feature of the present disclosure, the detonator detonator has a detonator body provided with a photophore. The power feeding device has a cylinder body into which the detonator body is inserted and a receiver is attached at a position facing the light emitter. Therefore, when the detonator body is inserted into the tube body, the light emitter approaches the receiver. As a result, the communication accuracy of the response signal emitted by the detonator detonator is improved. Moreover, the energy required for communication of the response signal is small. Therefore, the driving energy required for the charger is small, and the charger can be charged in a short time.

According to another feature of the present disclosure, the detonator detonator is electrically connected to the charger via a first switch, and is electrically connected to the detonator charger via a second switch. It has an ignition part. When the detonator side control circuit turns on the first switch, power is supplied from the charger to the detonation charger, and the detonator charger is charged. When the detonator side control circuit turns on the second switch, power is supplied from the detonator charger to the ignition unit.

Therefore, it is possible to avoid charging the detonation charger until just before the detonation. For example, the charger can be charged before the detonator is loaded into the charge hole, and the detonator charger can be charged after the detonator is loaded into the charge hole. This makes it possible to prevent the detonation charger from being charged until just before detonation, regardless of the charging timing. Thus, the accidental detonation of the detonator detonator can be prevented more reliably.

Another feature of the present disclosure relates to a method of installing a wireless detonation system. Prepare a detonator detonator with a receiving coil. Insert the detonator detonator into the cylinder body and install the receiving coil inside the power transmission coil provided in the cylinder body. Drive energy is transmitted from the power transmission coil to the reception coil by an electromagnetic induction method. The driving energy is charged by the charger provided in the detonator detonator. The light emitter provided in the detonator emits a charge completion signal when the charger is fully charged. A receiver provided on the cylinder body receives a charge completion signal. The detonator detonator is pulled out of the cylinder body, and the detonator detonator is loaded into the charge hole formed in the blast target.

Therefore, the charger is charged before loading the detonator detonator into the charge hole. By inserting the detonator detonator into the cylinder body, the power transmission coil and the reception coil can be brought close to each other. This improves the efficiency of power transmission and shortens the charging time. Further, the detonator detonator emits a response signal from the light emitter as an optical signal to the power feeding device. On the other hand, the conventional wireless detonator detonator transmits a response signal to the detonator power supply device by radio waves. The light emitter and the receiver are simpler than the transmission / reception circuit and the transmission / reception antenna that transmit and receive by radio waves. Therefore, the cost of the detonator detonator that is consumed for each detonation can be reduced. Moreover, the transmission of optical signals consumes less energy than the transmission of radio waves. Therefore, the driving energy required for the charger can be reduced, and the charging time can be shortened.

According to other features of the disclosure, the power transmission coil emits radio waves containing information about the detonation delay time in addition to the driving energy. The receiving coil receives radio waves. A recorder installed in the detonator detonator records information on the detonation delay time. The light emitter emits light when the recorder records the detonation delay time. The detonator detonator is pulled out of the cylinder body and loaded into the charge hole. The transmitting antenna emits a detonation signal. The receiving coil receives the detonation signal. The control circuit of the detonator detonator detonates the explosive by the ignition part using the driving energy at the time corresponding to the detonation delay time.

Therefore, the detonation delay time is recorded in the recorder before the detonator detonator is loaded into the charge hole. Then, it can be confirmed that the detonation delay time is recorded in the recorder by the light emission of the light emitter or by the receiver of the power supply device. Therefore, it is possible to prevent a recording failure of the detonation delay time of each detonator detonator.

According to another feature of the present disclosure, the second transmitting antenna of the power feeding device emits a radio wave having the same frequency as the detonation signal with the detonator detonator inserted in the cylinder body. The receiving coil of the detonator detonator receives radio waves. The detection / demodulation circuit detects the test signal from the radio waves received by the receiving coil. The control circuit causes the light emitter to emit light based on the test signal. Therefore, it is possible to confirm the soundness of the reception performance of the reception coil during charging. Thus, it is possible to prevent poor reception of the detonation signal in advance.

It is a schematic diagram of the overall configuration of the wireless detonation system and the tunnel excavation site. It is an enlarged schematic view of the power feeding device in the part II in FIG. It is sectional drawing which shows the charge hole of the face surface, the explosive loaded in the charge hole, and the detonator detonator. It is the schematic which shows the detonator detonator and the power feeding device which concerns on 1st Embodiment. It is the schematic including a partial sectional view of the detonator detonator and the power feeding device during the charging process. It is a block diagram of a wireless detonation system. It is a flowchart which shows a series of work by a wireless detonation system. It is a flowchart of the charge process in a wireless detonation system. It is a flowchart of detonation processing in a wireless detonation system. It is a block diagram of the wireless detonation system which concerns on 2nd Embodiment. It is the schematic which shows the detonator detonator and the power feeding device which concerns on 3rd Embodiment.

Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. The same reference number in the description means the same element having the same function without duplicate explanation. One embodiment of the present disclosure will be described with reference to FIGS. 1-9. The radio detonation system 1 is used to explode explosives to excavate or crush structures such as tunnels, seabeds, rocks, and buildings. In the present embodiment, as shown in FIG. 1, the excavation site of the tunnel 50 will be described as an example. The tunnel 50 has a cave floor 50a, a cave side wall 50b, and a cave ceiling 50c. Further, the tunnel 50 has a face surface 51 at the back. A plurality of charge holes 52 are drilled in the face surface 51 at predetermined intervals in the vertical direction and the horizontal direction. The charge hole 52 extends in the depth direction of the tunnel 50. A detonator detonator 10 and a plurality of explosives 2 are loaded in each charge hole 52.

As shown in FIG. 1, the wireless detonation system 1 has a plurality of detonator detonators 10 loaded in each charge hole 52, and a power supply device (charging preparation device) 30 for charging the detonator detonator 10. The power feeding device 30 is a handy type and is used near the face surface 51. The radio detonation system 1 has an operating device 39 and a transmitting antenna 45 installed outside the cave floor 50a or the tunnel 50. The operating device 39 is connected to an input unit 47 (see FIG. 6) including, for example, a switch, a keyboard, a touch panel, and the like. The operating device 39 is connected to the repeater 43 by a cable 42. The repeater 43 is connected to the transmitting antenna 45 by the transmitting antenna cable 44. Therefore, the operating device 39 and the transmitting antenna 45 are electrically connected via the repeater 43. The transmitting antenna 45 is, for example, a loop shape or a composite loop shape using a plurality of loop shape elements. The transmitting antenna 45 emits a specific electromagnetic wave by generating an electric field or a magnetic field around the transmitting antenna 45 when a current having a specific frequency, amplitude, and wavelength flows.

As shown in FIG. 1, the transmitting antenna 45 is arranged at a position separated from the face surface 51 by a distance L1. The distance L1 is set to, for example, 100 m to 1000 m. The repeater 43 is arranged at a position separated from the face surface 51 by a distance L2. The distance L2 is set to, for example, 500 m or more. When the low-frequency radio wave emitted from the transmitting antenna 45 has a long reach, the repeater 43 is omitted and the transmitting antenna 45 is directly connected to the operating device 39. The operating device 39 is arranged at a remote position, for example, 100 m to 1000 m away from the charging hole 52. The distance L3 from the repeater 43 to the operating device 39 is, for example, about 100 m to 1000 m. The repeater 43 has a matching / tuning circuit or the like inside, and performs matching and tuning by eliminating a mismatch in the electrical characteristics of the cable 42 and the load (transmission antenna cable 44 and transmission antenna 45).

As shown in FIG. 4, the detonator detonator 10 has a substantially cylindrical detonator body 11. The receiving coil 12 is wound in an annular shape around the substantially central portion of the outer peripheral surface of the detonator body 11. The number of turns of the receiving coil 12 is one or more, for example, ten or more. The receiving coil 12 receives electric power (driving energy) or various signals wirelessly transmitted from the power feeding device 30 or the transmitting antenna 45. The receiving coil 12 generates a current having a specific frequency and amplitude when exposed to an electromagnetic field. The electric current is used as electric power for controlling and detonating the detonator detonator 10. The receiving coil 12 can also receive a signal from such a specific current. The frequency of the electromagnetic wave is, for example, 100 k to 500 kHz when receiving electric power, and, for example, 1 k to 10 kHz when receiving a signal so as to have good transparency in the soil or rock.

As shown in FIG. 4, the detonator detonator 10 has a detonator ignition unit 13 on one bottom surface of the detonator body 11, and a light emitting element (light emitter) 14 on the other bottom surface. The detonator ignition unit 13 extends along the longitudinal direction of the detonator main body 11. One of the explosives 2 is attached as a parent die 2a around the detonator ignition unit 13. The light emitting element 14 is, for example, a light emitting diode (LED), which receives an electric signal and emits light at a specific wavelength. The light emitting element 14 emits infrared rays (near infrared rays) or visible light having a wavelength of, for example, 700 to 2500 nm. When the light emitting element 14 emits infrared rays, the influence of minute foreign substances such as moisture, dust, and dust on communication is reduced, and stable communication quality can be ensured. When the light emitting element 14 emits visible light, the operator can visually confirm it easily. When the reception of the electric signal is completed, the light emitting element 14 blinks in response to an instruction, for example, at a predetermined time interval.

As shown in FIG. 4, the detonator detonator 10 has a control unit 20 inside the detonator main body 11. As shown in FIG. 6, the control unit 20 has a detonator detonator side control circuit (CPU) 21 that outputs an electric signal to each electric component based on an input of an electric signal from each electric component of the detonator detonator 10. The receiving coil 12, the detonator ignition unit 13, and the light emitting element 14 are electrically connected to the detonator detonator side control circuit 21, respectively. The control unit 20 includes a charging / recording tuning circuit 22 that synchronizes with the reception frequency of the current, a rectifying element 24 that rectifies the current into a direct current, and a storage element (charger) 26 that stores electric power. The charging / recording tuning circuit 22 is connected to the receiving coil 12. The charging / recording tuning circuit 22 tunes to the receiving frequency of the current generated when the receiving coil 12 receives electric power. The rectifying element 24 is connected to the charging / recording tuning circuit 22. The power storage element 26 is, for example, a capacitor or the like, and is connected to the rectifier element 24 and the detonator side control circuit 21. The power storage element 26 can store the electric power transmitted from the rectifying element 24. The power storage element 26 stores electric power for driving the electronic components in the control unit 20 and electric power for igniting the detonator ignition unit 13.

As shown in FIG. 6, the control unit 20 includes a command tuning circuit 23 and a detection / demodulation circuit 25. The command tuning circuit 23 is connected to the receiving coil 12. The command tuning circuit 23 tunes to the receiving frequency of the current generated when the receiving coil 12 receives the signal. The detection / demodulation circuit 25 is connected to the charging / recording tuning circuit 22 and the command tuning circuit 23. The detection / demodulation circuit 25 detects a current signal from a specific frequency and waveform from the current, and transmits the signal to the detonation tube side control circuit 21. The control unit 20 has a memory (recorder) 27 connected to the detonator side control circuit 21. A serial number unique to the detonator detonator 10 is recorded in the memory in advance. In the memory 27, for example, the detonation delay time is recorded based on the signal for setting the detonation delay time detected by the detection / demodulation circuit 25.

As shown in FIG. 6, the control unit 20 has a detonation switch 29 and a resistance measurement circuit 28 connected to the detonator side control circuit 21. The detonator switch 29 can switch the electrical connection state between the power storage element 26 and the detonator ignition unit 13. When the on signal is not output from the detonator side control circuit 21, the detonator switch 29 cuts off the electrical connection between the power storage element 26 and the detonator ignition unit 13 to turn it off. The detonator switch 29 turns on the electrical connection between the power storage element 26 and the detonator ignition unit 13 when an on signal is output from the detonator detonator side control circuit 21. The resistance measuring circuit 28 measures the electric resistance between the power storage element 26 and the detonator ignition unit 13 based on the output from the detonator detonator side control circuit 21. The resistance measuring circuit 28 outputs the measured electric resistance value to the detonator tube side control circuit 21.

As shown in FIG. 2, the power feeding device 30 includes an input unit 40, a display unit 41, and a control unit 34. The input unit 40 includes, for example, a keyboard, a switch, a touch panel, and the like. The display unit 41 includes, for example, a display, a lamp for turning on / off, and the like. The input unit 40 and the display unit 41 are electrically connected to the control unit 34, respectively. The operator operates the input unit 40 while checking the information displayed on the display unit 41. The display unit 41 displays, for example, the charging state of the detonator detonator 10. The control unit 34 is controlled by the operator operating the input unit 40 while checking the display unit 41. The control unit 34, the input unit 40, and the display unit 41 are housed in a transportable protection box 48. The power feeding device 30 is transported to a position away from the face surface 51 after the detonator detonator 10 is loaded into the charging hole 52, for example. By housing the electronic device in the protection box 48, it is possible to carry the electronic device such as the control unit 34 while protecting it from an impact during transportation.

As shown in FIG. 4, the power feeding device 30 has a cylindrical cylinder body 31. The cylinder body 31 has a power transmission coil 32 wound in an annular shape. The power transmission coil 32 is wound around the outer peripheral surface of the cylinder body 31. The number of turns of the power transmission coil 32 is one or more, for example, ten or more. The cylinder body 31 has a circular opening 31a at one end. The opening 31a allows the detonator body 11 of the detonator detonator 10 to be inserted along the longitudinal direction. The opening 31a has an inner diameter larger than the outer diameter of the receiving coil 12 wound around the outer peripheral surface of the detonator main body 11. A hollow cylindrical space having an inner diameter substantially the same as that of the opening 31a is formed inside the cylinder body 31.

As shown in FIG. 5, the cylinder body 31 has a bottom surface 31b at a position facing the opening 31a. A light receiving element (receiver) 33 is provided on the inner surface side of the bottom surface 31b. The light receiving element 33 is, for example, a photodiode, and generates an electric current when irradiated with light. The light receiving element 33 generates a current of a specific code signal by receiving, for example, a specific blinking optical signal. The light receiving element 33 is arranged on the cylindrical central axis 31d of the cylinder body 31. The bottom surface 31b has a window portion 31c capable of transmitting light inside and outside the cylinder body 31. The window portion 31c is provided in the vicinity of the light receiving element 33.

As shown in FIG. 6, the control unit 34 has a power supply device side control circuit (CPU) 35, and the power supply device side control circuit 35 is based on the input of an electric signal from each electric component of the power supply device 30. Outputs electrical signals to components. The control unit 34 has a power supply 38 that supplies electric power to the power supply device side control circuit 35. The control unit 34 has a power transmission / transmission circuit 36 and a reception circuit 37 connected to the power supply device side control circuit 35. The power transmission / transmission circuit 36 is connected to the power transmission coil 32 and the transmission antenna 45. The power transmission / transmission circuit 36 outputs a current based on the input of the input unit 40. The power transmission / transmission circuit 36 outputs a current related to electric power to be transmitted to the reception coil 12 of the detonator tube 10 to the power transmission coil 32. The power transmission / transmission circuit 36 outputs a current having a specific frequency of 100 k to 500 kHz and a specific code signal set, which is related to, for example, a signal for setting the detonation delay time, to the power transmission coil 32. The power transmission / transmission circuit 36 outputs a current having a frequency of 1 k to 10 kHz in which a specific code signal related to, for example, a detonation signal or the like is set to the transmission antenna 45.

As shown in FIG. 6, the control unit 34 has a second transmitting antenna 46 connected to the power transmission / transmitting circuit 36. The power transmission / transmission circuit 36 outputs a current having a specific frequency, amplitude, and wavelength to the second transmission antenna 46 based on the input of the input unit 40. The second transmitting antenna 46 emits a radio wave having the same frequency as the detonation signal at, for example, 1 k to 10 kHz by a current having a specific frequency, amplitude, and wavelength.

As shown in FIG. 6, the receiving circuit 37 is connected to the light receiving element 33. The receiving circuit 37 outputs an electric signal to the power feeding device side control circuit 35 based on the current of the specific code signal generated by the light receiving element 33. The power supply device side control circuit 35 displays the charging state of the detonator detonator 10 on the display unit 41 based on the electric signal output from the receiving circuit 37.

As shown in FIGS. 2 and 5, the detonator detonator 10 is inserted into the cylinder body 31 with the bottom surface having the light emitting element 14 at the tip. At this time, the light emitting element 14 faces the light receiving element 33 on the cylindrical central axis 31d or in the vicinity of the cylindrical central axis 31d. In the detonator detonator 10, until the light emitting element 14 reaches a position separated from the light receiving element 33 by a distance L4. The distance L4 is set to, for example, 0 to 1 m. The light receiving element 33 can receive an optical signal having an inclination angle of 0 ° to an angle A1 with respect to the central axis 31d of the cylinder. The angle A1 is set to, for example, 5 to 30 °. The receiving coil 12 radially overlaps with the power transmission coil 32 in the radial direction of the power transmission coil 32.

A flow of a method of blasting and excavating the face surface 51 using the wireless detonation system 1 will be described with reference to FIGS. 7 to 9. First, the operator drills a plurality of charge holes 52 in the face surface 51 in preparation for blasting as referred to FIG. 1 (step S1 in FIG. 7). The charge hole 52 is drilled to, for example, a diameter of about 5 cm and a depth of about 2 m. The detonator body 11 of the detonator detonator 10 is inserted into the cylinder body 31 of the power feeding device 30 as shown in FIG. 5 (step S2 in FIG. 7). The detonator body 11 is inserted until the light emitting element 14 of the detonator detonator 10 and the light receiving element 33 of the power feeding device 30 reach a predetermined distance L4. The operator operates the input unit 40 to start the charging process of the detonator detonator 10 (step S3 in FIG. 7).

As shown in FIGS. 5 and 6, the power supply device side control circuit 35 receives an input signal from the input unit 40 and outputs a current to the power transmission coil 32 via the power transmission / transmission circuit 36 (step S11 in FIG. 8). .. The power transmission coil 32 generates, for example, a high-frequency magnetic field having a frequency of 100 k to 500 kHz (step S12 in FIG. 8). The receiving coil 12 of the detonator detonator 10 receives a high-frequency magnetic field to generate an electric current (step S13 in FIG. 8). The charging / recording tuning circuit 22 tunes to the frequency of the current generated by the receiving coil 12 (step S14 in FIG. 8). The rectifying element 24 rectifies the received current into a direct current (step S15 in FIG. 8).

As shown in FIG. 6, the power storage element 26 stores electric power by being supplied with a direct current (step S16 in FIG. 8). Before the current is generated in the receiving coil 12, the voltage of the power storage element 26 is 0V. The detonator detonator side control circuit 21 determines whether the voltage of the power storage element 26 has reached a predetermined value (step S17 in FIG. 8). If the voltage of the power storage element 26 is less than a predetermined value, the process returns to step S16 in FIG. When the voltage of the power storage element 26 reaches a predetermined value, the power for control of the control unit 20 and the power for ignition of the detonator ignition unit 13 are sufficiently stored in the power storage element 26.

As shown in FIG. 6, the detonator tube side control circuit 21 transmits a resistance measurement signal to the resistance measurement circuit 28 when it is determined that the voltage of the power storage element 26 becomes equal to or higher than a predetermined value and charging is completed. The resistance measuring circuit 28 measures the electric resistance between the lightning tube ignition unit 13 and the detonation switch 29 by using a part of the electric power stored in the power storage element 26 as a weak current (step S18 in FIG. 8). The detonator detonator side control circuit 21 determines whether the soundness (conductivity) of the detonator ignition unit 13 is good or bad from the measured resistance value (step S19 in FIG. 8). The detonator detonator side control circuit 21 transmits a charge completion signal, a signal of good or bad soundness of the detonator ignition unit 13, and a serial number recorded in the memory 27 to the light emitting element 14 (step S20 in FIG. 8). The light emitting element 14 emits an optical signal of a specific code signal based on the received electric signal (step S21 in FIG. 8).

As shown in FIG. 6, the light receiving element 33 of the power feeding device 30 receives the optical signal (step S22 in FIG. 8). The light receiving element 33 generates a current of a specific code signal based on the optical signal. The receiving circuit 37 outputs a charging completion signal and a signal of good or bad soundness of the detonator ignition unit 13 to the power feeding device side control circuit 35 based on the current output from the light receiving element 33. The power supply device side control circuit 35 confirms the completion of charging of the power storage element 26 (step S23 in FIG. 8), and confirms the soundness of the detonator ignition unit 13 (step S24 in FIG. 8). When the soundness of the lightning tube ignition unit 13 is good, the power feeding device side control circuit 35 transmits a setting signal of the detonation delay time to the power transmission coil 32 via the power transmission / transmission circuit 36 (step S25 in FIG. 8). The power supply device side control circuit 35 transmits, for example, the detonation delay time corresponding to the serial number of the received detonator detonator 10. When the soundness of the detonator ignition unit 13 is not good, the power supply device side control circuit 35 completes the charging process, and the display unit 41 displays that the soundness of the detonator ignition unit 13 is not good.

As shown in FIGS. 5 and 6, the power transmission coil 32 generates a high-frequency magnetic field having a frequency of, for example, 100 k to 500 kHz, and transmits a detonation delay time setting signal (step S26 in FIG. 8). The receiving coil 12 of the detonator detonator 10 receives the set signal (step S27 in FIG. 8) and outputs a current of a specific frequency by an electromagnetic induction method. The charging / recording tuning circuit 22 receives a current of a specific frequency generated by the receiving coil 12. The detection / demodulation circuit 25 detects the detonation delay time setting signal from the received current (step S28 in FIG. 8) and outputs it to the detonation lightning tube side control circuit 21. The detonator detonator side control circuit 21 transmits each setting signal to the memory 27. The memory 27 records the detonation delay time (step S29 in FIG. 8).

As shown in FIGS. 5 and 6, the detonator detonator side control circuit 21 transmits a detonation delay time setting completion signal to the light emitting element 14 (step S30 in FIG. 8). The light emitting element 14 emits an optical signal of a specific code signal based on the received electric signal (step S31 in FIG. 8). The light receiving element 33 of the power feeding device 30 receives the optical signal (step S32 in FIG. 8). The light receiving element 33 generates a current of a code signal corresponding to the received optical signal. The receiving circuit 37 outputs a signal notifying the completion of setting the detonation delay time to the power feeding device side control circuit 35 based on the current output from the light receiving element 33. The power supply device side control circuit 35 confirms that the detonation delay time of the detonator detonator 10 has been set (step S33 in FIG. 8). The power supply device side control circuit 35 causes the display unit 41 to indicate that the preparation is complete (step S34 in FIG. 8).

During the charging process, the second transmitting antenna 46 of the power feeding device 30 may be used to transmit a test signal having the same frequency as the detonating signal to the receiving coil 12 of the detonating detonator 10. As a result, the soundness of the communication of the detonation signal can be confirmed before the detonator detonator 10 is loaded into the charge hole 52 (see FIG. 1). Specifically, first, the second transmitting antenna 46 transmits a radio wave of a low frequency test signal of 1 k to 10 kHz. The receiving coil 12 of the detonator detonator 10 receives radio waves from the second transmitting antenna 46. The detection / demodulation circuit 25 detects a test signal from the radio waves received by the receiving coil 12 and outputs the test signal to the detonator side control circuit 21. The detonator side control circuit 21 causes the light emitting element 14 to emit light based on the test signal. The power feeding device side control circuit 35 confirms that the light receiving element 33 receives the optical signal of the light emitting element and the test signal is transmitted and received by the receiving coil 12.

After confirming that the detonator detonator 10 is ready, the operator pulls out the detonator detonator 10 from the cylinder body 31 of the power feeding device 30 (step S4 in FIG. 7). After confirming that the plurality of detonator detonators used for the excavation work are ready, the operator loads the detonator detonator 10 and the explosive 2 into the charge hole 52 (step S5 in FIG. 7). As shown in FIG. 3, the detonator detonator 10 is loaded into the charging hole 52 with the parent die 2a connected to the detonator ignition unit 13 facing forward. A plurality of additional dies 2b are loaded on the front side of the parent die 2a. The inlet of the charge hole 52 is sealed with a sealing member 53 such as clay. After loading the detonator detonator 10 and the explosive 2 into all the charge holes 52, the operator installs the transmission antenna 45 and the repeater 43 at a predetermined distance from the face surface 51 (step S6 in FIG. 7). After installing the transmitting antenna 45 and the repeater 43, the operator operates the input unit 40 to start the detonation process for the detonator detonator 10 (step S7 in FIG. 7).

As shown in FIG. 6, the operator operates the input unit 47 of the operating device 39, the input unit 47 emits a signal, and the control circuit in the operating device 39 that receives the signal transmits the detonation signal. The detonation signal is transmitted to the transmitting antenna 45 via the repeater 43 (step S41 in FIG. 9). The transmitting antenna 45 generates a low-frequency electromagnetic field having a frequency of, for example, 1 k to 10 kHz and transmits a detonation signal (step S42 in FIG. 9). The receiving coil 12 of the detonator detonator 10 in the charge hole 52 (see FIG. 1) receives the detonation signal (step S43 in FIG. 9) and outputs a current having a specific frequency and amplitude by an electromagnetic induction method. The command tuning circuit 23 outputs the current of the tuning frequency received by the receiving coil 12 (step S44 in FIG. 9). The detonation signal is detected from the signal of the frequency received by the detection / demodulation circuit 25 (step S45 in FIG. 9), and is output to the detonation lightning tube side control circuit 21.

As shown in FIG. 6, the detonator detonator side control circuit 21 activates an internal timer when the detonator signal is received. It is determined whether or not the time set by the timer has reached the detonation delay time recorded in the memory 27 (step S46 in FIG. 9). The determination is repeated until the timer count time reaches the detonation delay time. When the count time of the timer reaches the detonation delay time, the detonation lightning pipe side control circuit 21 outputs an ON signal to the detonation switch 29 (step S47 in FIG. 9). The detonator switch 29 is turned on (step S48 in FIG. 9), and the power storage element 26 transmits power to the detonator ignition unit 13 (step S49 in FIG. 9). The detonator ignition unit 13 ignites (step S50 in FIG. 9), and the explosive 2 (see FIG. 3) detonates.

As described above, the wireless detonator system 1 includes a detonator detonator 10 and a power supply device 30 for supplying driving energy to the detonator detonator 10 as shown in FIG. The detonator detonator 10 has a receiving coil 12 that receives the driving energy transmitted from the power feeding device 30, and a power storage element 26 that charges the received driving energy. Further, the detonator detonator 10 includes a detonator detonator side control circuit 21 that emits a charge completion signal when charging of the power storage element 26 is completed, and a light emitting element 14 that emits light based on the charge completion signal. The power feeding device 30 has a power transmission coil 32 that transmits driving energy by an electromagnetic induction method. Further, the power feeding device 30 includes a light receiving element 33 that detects the light emitted by the light emitting element 14, and a power feeding device side control circuit 35 that recognizes the completion of charging of the power storage element 26 based on the signal from the light receiving element 33.

Therefore, the detonator detonator 10 transmits a response signal to the power feeding device 30 by an optical signal. On the other hand, the conventional wireless detonator detonator transmits a response signal by radio waves to the power feeding device. The light emitting element 14 and the light receiving element 33 are configured to be simpler than the transmission / reception circuit and the transmission / reception antenna for transmitting and receiving by radio waves. Therefore, the cost of the detonator detonator 10 that is consumed for each detonation can be reduced. Moreover, the transmission of optical signals requires less energy than the transmission of radio waves. Therefore, the driving energy required for the power storage element 26 is small, and the power storage element 26 can be charged in a short time.

As shown in FIG. 6, the power transmission coil 32 is configured to transmit not only driving energy but also radio waves including a detonation preparation signal. The radio wave is received by the receiving coil 12. The detonator detonator 10 has a detection / demodulation circuit 25 that detects a detonation preparation signal from radio waves. Therefore, the receiving coil 12 is used for both receiving the driving energy and receiving the radio wave including the detonation preparation signal. This simplifies the receiving system of the detonator detonator 10. For example, it is not necessary to provide a receiver for receiving an optical signal in the detonator detonator 10. Thus, the cost of the detonator detonator 10, which is a consumable part, can be further reduced.

As shown in FIGS. 1 and 6, the wireless detonation system 1 includes an operating device 39 that transmits a radio wave including a detonation signal. The receiving coil 12 receives radio waves including a detonation signal. The detection / demodulation circuit 25 detects the detonation signal from the radio wave. Therefore, the receiving coil 12 of the detonator detonator 10 receives the driving energy and the detonation preparation signal at the time of charging, and receives the detonation signal at the time of detonation. The detection / demodulation circuit 25 detects the detonation preparation signal at the time of charging and detects the detonation signal at the time of detonation. Therefore, the detonator detonator 10 is simplified by standardizing the parts.

As shown in FIG. 5, the detonator detonator 10 has a detonator body 11 in which the receiving coil 12 is wound along the outer peripheral surface. The power feeding device 30 has a cylinder body 31 into which the detonator body 11 is inserted and the power transmission coil 32 is located outside the receiving coil 12. Therefore, when the detonator body 11 is inserted into the cylinder body 31, the receiving coil 12 approaches the power transmission coil 32. As a result, driving energy is efficiently supplied from the power transmission coil 32 to the reception coil 12. Thus, the charging time can be shortened.

As shown in FIG. 5, the detonator detonator 10 has a detonator body 11 provided with a light emitting element 14. The power feeding device 30 has a cylinder body 31 into which the detonator body 11 is inserted and the light receiving element 33 is attached at a position facing the light emitting element 14. Therefore, when the detonator body 11 is inserted into the cylinder body 31, the light emitting element 14 approaches the light receiving element 33. As a result, the communication accuracy of the response signal emitted by the detonator detonator 10 is improved. Moreover, the energy required for communication of the response signal is small. Therefore, the driving energy required for the power storage element 26 is small, and the power storage element 26 can be charged in a short time.

As shown in FIGS. 5 and 6, a detonator detonator 10 including a receiving coil 12 is prepared. The detonator detonator 10 is inserted into the cylinder body 31, and the receiving coil 12 is installed inside the power transmission coil 32 provided in the cylinder body 31. Driving energy is transmitted from the power transmission coil 32 to the reception coil 12 by an electromagnetic induction method. The driving energy is charged by the power storage element 26 provided in the detonator detonator 10. The light emitting element 14 provided in the detonator detonator 10 emits a charge completion signal when the charge of the power storage element 26 is completed. The light receiving element 33 provided on the cylinder body 31 receives the charging completion signal. The detonator detonator 10 is pulled out from the cylinder body 31, and the detonator detonator 10 is loaded into the charge hole 52 (see FIG. 1) formed in the blast target.

Therefore, the power storage element 26 is charged before the detonator detonator 10 is loaded into the charge hole 52. By inserting the detonator detonator 10 into the cylinder body 31, the power transmission coil 32 and the reception coil 12 can be brought close to each other. This improves the efficiency of power transmission and shortens the charging time. Further, the detonator detonator 10 emits a response signal from the light emitting element 14 to the power feeding device 30 as an optical signal. On the other hand, the conventional wireless detonator detonator transmits a response signal to the detonator power supply device by radio waves. The light emitting element 14 and the light receiving element 33 are configured to be simpler than the transmission / reception circuit and the transmission / reception antenna for transmitting and receiving by radio waves. Therefore, the cost of the detonator detonator 10 that is consumed for each detonation can be reduced. Moreover, the transmission of optical signals consumes less energy than the transmission of radio waves. Therefore, the driving energy required for the power storage element 26 can be reduced, and the charging time can be shortened.

As shown in FIG. 6, the power transmission coil 32 transmits radio waves including information on the detonation delay time in addition to the driving energy. The receiving coil 12 receives radio waves. A memory 27 provided in the detonator detonator 10 records information on the detonation delay time. The light emitting element 14 emits light when the memory 27 records the detonation delay time. The detonator detonator 10 is pulled out from the cylinder body 31 and loaded into the charging hole 52 (see FIG. 1). The transmitting antenna 45 transmits a detonation signal. The receiving coil 12 receives the detonation signal. The detonator side control circuit 21 detonates the explosive 2 (see FIG. 3) by the detonator ignition unit 13 using the driving energy at a time corresponding to the detonation delay time.

Therefore, the detonation delay time is recorded in the memory 27 before the detonator detonator 10 is loaded into the charge hole 52. Then, it can be confirmed by the light emission of the light emitting element 14 or by the light receiving element 33 of the power feeding device 30 that the detonation delay time is recorded in the memory 27. Therefore, it is possible to prevent a recording failure of the detonation delay time of each detonator detonator 10.

As shown in FIG. 6, with the detonator detonator 10 inserted into the cylinder body 31, the second transmitting antenna 46 of the power feeding device 30 transmits a radio wave having the same frequency as the detonator signal. The receiving coil 12 of the detonator detonator 10 receives radio waves. The detection / demodulation circuit 25 detects a test signal from the radio waves received by the receiving coil 12. Based on the test signal, the detonator side control circuit 21 causes the light emitting element 14 to emit light. Therefore, the soundness of the reception performance of the reception coil 12 can be confirmed during charging. Thus, it is possible to prevent poor reception of the detonation signal in advance.

Other embodiments of the present disclosure will be described with reference to FIG. The radio detonator system 60 of the second embodiment has a detonator 61 shown in FIG. 10 instead of the detonator 10 of the radio detonator 1 shown in FIG. The control unit 62 of the detonator detonator 61 has a power storage element (main charger) 63 and a detonation power storage element (detonation charger) 64 in place of the power storage element 26 (see FIG. 5). The power storage element 63 is connected to the rectifying element 24 and the detonator side control circuit 21. The power storage element 63 is not directly connected to the detonation switch (second switch) 29, but is connected to the detonation charging switch 65 via the detonation power storage element 64. The detonation power storage element 64 is, for example, a capacitor having a capacity that can store electricity smaller than that of the power storage element 63. The detonation power storage element 64 is connected to the detonator detonator side control circuit 21 and the detonation switch 29. The detonation charging switch (first switch) 65 switches on / off the connection between the power storage element 63 and the detonation power storage element 64. The detonation charge switch 65 is off when there is no signal output from the detonator side control circuit 21.

The power storage element 63 shown in FIG. 10 stores the electric power received from the power transmission coil 32 of the power feeding device 30 (see FIG. 6) by the reception coil 12 of the detonator detonator 61. When the receiving coil 12 receives the detonation signal from the transmitting antenna 45 (see FIGS. 1 and 6), the detonator detonator side control circuit 21 outputs an on signal to the detonation charging switch 65. The detonation charging switch 65 is turned on, and power is supplied from the power storage element 63 to the detonation power storage element 64. The detonator storage element 64 stores electric power for igniting the detonator ignition unit 13. The detonator detonator side control circuit 21 outputs an ON signal to the detonator switch 29 at the detonation delay time recorded in the memory 27. The detonator switch 29 is turned on, and power is supplied from the detonator storage element 64 to the detonator ignition unit 13. The detonator ignition unit 13 ignites and the explosive 2 (see FIG. 3) detonates.

As described above, the detonator detonator 61 is electrically connected to the power storage element 63 via the detonation charge switch 65 as shown in FIG. 10, via the detonation power storage element 64, the detonation power storage element 64, and the detonation switch 29. It has a detonator ignition unit 13 that is electrically connected. When the detonator detonator side control circuit 21 turns on the detonation charging switch 65, power is supplied from the power storage element 63 to the detonation power storage element 64, and the detonation power storage element 64 is charged. When the detonator side control circuit 21 turns on the detonator switch 29, power is supplied from the detonator storage element 64 to the detonator ignition unit 13.

Therefore, it is possible to avoid charging the detonation power storage element 64 until just before the detonation. For example, the power storage element 63 can be charged before the detonator detonator 61 is loaded into the charge hole 52 (see FIG. 1), and the detonation power storage element 64 can be charged after the detonator detonator 61 is loaded into the charge hole 52. As a result, the detonation power storage element 64 can be prevented from being charged until immediately before the detonation, regardless of the charging timing. Thus, the erroneous explosion of the detonator detonator 61 can be prevented more reliably.

Other embodiments of the present disclosure will be described with reference to FIG. The wireless detonation system 70 of the third embodiment has a power supply device 71 shown in FIG. 11 instead of the power supply device 30 of the wireless detonation system 1 shown in FIG. The power feeding device 71 has, for example, a cylindrical cylinder body 72 having a size capable of accommodating a plurality of detonators 10 at the same time. The cylinder body 72 has a power transmission coil 73 wound in an annular shape. The power transmission coil 73 is wound around one or more turns along the outer peripheral surface of the cylinder body 72, for example, ten turns or more. The cylinder body 72 has a circular opening 72a on one end side. The opening 72a allows the detonator main body 11 of the plurality of detonator detonators 10 to be inserted along the longitudinal direction. A hollow cylindrical space having an inner diameter substantially the same as that of the opening 72a is formed inside the cylinder body 72. The cylinder body 72 may have, for example, a partition piece for partitioning each inserted detonator detonator 10.

As shown in FIG. 11, the cylinder body 72 has a bottom surface 72b at a position facing the opening 72a. A light receiving element (receiver) 74 is provided on the inner surface side of the bottom surface 72b. The light receiving element 74 is, for example, a photodiode, and generates an electric current when irradiated with light. The light receiving element 74 is arranged at a position within the irradiation range of the light emitting element 14 of each detonator detonator 10. A plurality of light receiving elements 74 may be provided on the bottom surface 72b. For example, a plurality of light receiving elements 74 may be provided in the cylinder body 72 corresponding to the light emitting elements 14 of the plurality of detonators 10 inserted in the cylinder body 72.

The power transmission / transmission circuit 36 shown in FIG. 11 outputs a time-division detonation delay time setting signal to the power transmission coil 73 based on the serial number recorded in the memory 27 (see FIG. 6) of each detonator tube 10. The power transmission coil 73 transmits a detonation delay time setting signal to the receiving coil 12 (see FIG. 6) of each detonator detonator 10 at predetermined time intervals. The detonator tube side control circuit 21 (see FIG. 6) of each detonator tube 10 outputs a setting completion signal to the light emitting element 14 at time-division time intervals based on the serial number. As a result, the light emitting elements 14 of the plurality of detonators 10 do not emit light at the same time but at predetermined time intervals. As a result, it is possible to prevent malfunction of communication from the plurality of light emitting elements 14 to the light receiving element 74.

Although the embodiment of the present invention has been described with reference to the above structure, it will be apparent to those skilled in the art that many substitutions, improvements and changes can be made without departing from the object of the present invention. Accordingly, the embodiments of the present invention may include all substitutions, improvements and modifications that do not deviate from the spirit and purpose of the appended claims. For example, the embodiment of the present invention is not limited to the above-mentioned special structure, and can be changed as follows.

For example, the power feeding device 30 is a handy type that can be carried close to the face surface 51 as described above. Instead of this, it may be changed to the installation type power feeding device 30 installed near the operating device 39. For example, the wireless detonation system 1 can be used for excavation work of the tunnel 50 as described above. Instead of this, it may be applied to, for example, crushing work of a structure such as a building or excavation work of the seabed. For example, the cylinder body 31 of the power feeding device 30 has a cylindrical shape having a window portion 31c as described above. Instead of this, it may be changed to the cylinder main body 31 having no window portion. Instead of this, for example, it may be changed to a box-shaped cylinder body 31. For example, the light emitting element 14 emits an optical signal of charging completion of the power storage element 26 and an optical signal of completion of setting the detonation delay time. Instead of this, a configuration may be configured in which only one optical signal is emitted. For example, the detonator detonator 10 may have a plurality of light emitting elements 14 that emit light of each signal.

The light emitting element 14 of the above embodiment blinks at predetermined time intervals based on a charge completion signal or the like. Instead of this, the light emitting element 14 may emit light having a different color or light having a different frequency depending on the signal content. Alternatively, the light emitting element 14 may emit light of a different color or light of a different frequency for each detonator detonator 10. The detonator detonator 10 of the above embodiment receives a signal by the receiving coil 12. Instead of this, the detonator detonator 10 may separately have a receiving antenna for receiving the detonation signal in addition to the receiving coil 12.

In the above embodiment, the detonator detonator 10 is charged in a dark place such as a tunnel, and the light emitting element 14 emits light. Therefore, when the light emitting element 14 emits visible light, the light emitted by the light emitting element 14 can be easily visually recognized as compared with a bright place in the sun. In the above embodiment, the delay time is transmitted from the power feeding device 30 to the detonator detonator 10 and recorded in the memory 27 of the detonator detonator 10. Instead of this, the delay time may be recorded in the memory 27 before charging the detonator detonator 10.

In the above embodiment, the power feeding device 30 has a second transmitting antenna 46 that transmits a test signal having the same frequency as the detonation signal. Instead of this, the power feeding device 30 may be in a form in which the second transmitting antenna 46 is not provided and the test signal is not transmitted. The light emitting element 14 of the above embodiment is provided at the tip of the detonator main body 11, and the light receiving element 33 is provided at the bottom surface of the cylinder main body 31. Instead of this, the light emitting element 14 may be provided on the outer peripheral surface of the detonator main body 11, and the light receiving element 33 may be provided on the inner peripheral surface of the cylinder main body 31. In this case, when the detonator body 11 is inserted into the cylinder body 31, the light emitting element 14 and the light receiving element 33 face each other.

1 ... Wireless detonator system 2 ... Explosive, 2a ... Parent die, 2b ... Increased die 10 ... Detonator detonator 11 ... Detonator body 12 ... Receiving coil 13 ... Detonator ignition unit 14 ...
20 ... Control unit 21 ... Detonation tube side control circuit 22 ... Charging / recording tuning circuit 23 ... Command tuning circuit 24 ... Rectifier element 25 ... Detection / demodulation circuit 26 ... Storage element (charger)
27 ... Memory (recorder)
28 ... Resistance measurement circuit 29 ... Detonation switch (second switch)
30 ... Power feeding device 31 ... Cylinder body, 31a ... Opening, 31b ... Bottom surface, 31c ... Window, 31d ... Cylindrical central axis 32 ... Transmission coil 33 ... Light receiving element (receiver)
34 ... Control unit 35 ... Power supply device side control circuit 36 ... Power transmission / transmission circuit 37 ... Reception circuit 38 ... Power supply 39 ... Operation device 40 ... Input unit 41 ... Display unit 42 ... Cable 43 ... Repeater 44 ... Transmission antenna cable 45 ... Transmission antenna 46 ... Second transmission antenna 47 ... Input unit 48 ... Protection box 50 ... Tunnel, 50a ... Cave bed, 50b ... Cave side wall, 50c ... Cave ceiling 51 ... Face surface 52 ... Charge hole 53 ... Sealing member 60 ... Wireless detonation system 61 ... Detonation lightning tube 62 ... Control unit 63 ... Power storage element (charger)
64 ... Power storage element for detonation (charger for detonation)
65 ... Explosion charging switch (1st switch)
70 ... Wireless detonation system 71 ... Power supply device 72 ... Cylinder body, 72a ... Opening, 72b ... Bottom 73 ... Power transmission coil 74 ... Light receiving element (receiver)
L1, L2, L3, L4 ... Distance A1 ... Angle

Claims (9)

It ’s a wireless detonation system.
It has a detonator detonator and a power supply device that supplies driving energy to the detonator detonator.
The detonator tube emits a receiving coil that receives the driving energy transmitted from the power feeding device, a charger that charges the received driving energy, and a charging completion signal when the charging of the charger is completed. It has a lightning tube side control circuit and a light emitter that emits light based on the charge completion signal.
The power feeding device completes charging of the charger based on a power transmission coil that transmits the driving energy by an electromagnetic induction method, a receiver that detects light emitted by the light emitter, and a signal from the receiver. A wireless detonation system with a power supply side control circuit that recognizes. The wireless detonation system according to claim 1.
The power transmission coil is configured to transmit not only the driving energy but also a radio wave including a detonation preparation signal, and the radio wave is received by the receiving coil.
The detonator detonator is a wireless detonator system having a detection / demodulation circuit that detects the detonation preparation signal from the radio waves. The wireless detonation system according to claim 2.
It has a transmitting antenna that emits radio waves including detonation signals.
The receiving coil receives the radio wave including the detonation signal,
A wireless detonation system in which the detection / demodulation circuit detects the detonation signal from the radio waves. The wireless detonation system according to any one of claims 1 to 3.
The detonator detonator has a detonator body in which the receiving coil is wound along the outer peripheral surface.
The power feeding device is a wireless detonation system having a cylinder body into which the detonator body is inserted and the power transmission coil is located outside the receiving coil. The wireless detonation system according to any one of claims 1 to 4.
The detonator detonator has a detonator body provided with the light emitter, and has a detonator body.
The power feeding device is a wireless detonation system having a cylinder body in which the detonator body is inserted and the receiver is attached at a position facing the light emitter. The wireless detonation system according to any one of claims 1 to 5.
The detonator detonator has a detonation charger that is electrically connected to the charger via a first switch, and an ignition unit that is electrically connected to the detonator charger via a second switch. ,
When the detonator side control circuit turns on the first switch, power is supplied from the charger to the detonator charger to charge the detonator charger.
A wireless detonator system in which power is supplied from the detonator charger to the ignition portion when the detonator side control circuit turns on the second switch. How to install a wireless detonation system
Prepare a detonator detonator with a receiving coil,
The detonator tube is inserted into the cylinder body of the power feeding device, and the receiving coil is installed inside the power transmission coil provided in the cylinder body.
Driving energy is transmitted from the power transmission coil to the reception coil by an electromagnetic induction method.
The driving energy is charged by the charger provided in the detonator detonator, and the driving energy is charged.
The light emitter provided in the detonator emits a charge completion signal when the charger is fully charged.
The receiver provided on the cylinder body receives the charge completion signal and receives the charge completion signal.
A method for installing a wireless detonator in which the detonator is pulled out of the cylinder body and the detonator is loaded into a charge hole formed in a blast target. The method for installing the wireless detonation system according to claim 7.
The power transmission coil transmits radio waves including information on the detonation delay time in addition to the driving energy, and the receiving coil receives the radio waves.
A recorder provided in the detonator detonator records the information on the detonation delay time,
When the recorder records the detonation delay time, the light emitter emits light.
The detonator detonator is pulled out of the cylinder body and loaded into the charge hole.
The transmitting antenna emits a detonation signal,
The receiving coil receives the detonation signal and
A method of installing a wireless detonator system in which a control circuit of the detonator detonator detonates explosives by an ignition unit using the driving energy at a time corresponding to the detonation delay time. The method for installing the wireless detonation system according to claim 8.
With the detonator detonator inserted into the cylinder body, the second transmitting antenna of the power feeding device emits a radio wave having the same frequency as the detonator signal.
The receiving coil of the detonator receives the radio wave,
The detection / demodulation circuit detects the test signal from the radio wave received by the receiving coil, and the test signal is detected.
A method of installing a wireless detonation system in which the control circuit causes the light emitter to emit light based on the test signal.

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