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    • 1. 发明专利
    • DETONATION PREVENTING DEVICE
    • JP2002054900A
    • 2002-02-20
    • JP2000239856
    • 2000-08-08
    • MITSUBISHI ELECTRIC CORP
    • NAKADA TAKESHI
    • F42C15/44F42C13/04
    • PROBLEM TO BE SOLVED: To obtain a detonation preventing device, making the reception of a detonating signal transmitted from a commanding device impossible to prevent the initiation of the detonation device when a worker is within the effective range 5 of the explosive charge of the detonation device even in a case when the detonating signal of the detonation device is transmitted from the commanding device by mistake. SOLUTION: The detonation preventing device is carried by the worker having the possibility of approaching the position of installation of the detonation device. When the worker throw a power supply in by operating a switch, a detonation preventing signal having the same frequency as that used in the detonation device is transmitted through an aerial to a distance range equal to or longer than that of effective range of explosive from the worker whereby the receiving of a detonating signal of the detonation device is interfered by an electromagnetic interference due to the transmission of detonation preventing signal and the detonation can be prevented.
    • 7. 发明专利
    • MODULAR ELECTRONIC SAFETY DEVICE RELEASE DEVICE
    • JPH049600A
    • 1992-01-14
    • JP41152590
    • 1990-12-18
    • HUGHES AIRCRAFT CO
    • KENESU II UIRISUROBAATO AARU DEYURERU
    • F42C15/44F42C15/40
    • PURPOSE: To obtain a universal application modular electronic safe arm device MESAD comprising means for outputting a high voltage, means for firing both trigger signals, a voltage control means generating a high voltage output signal with a safety device release signal, and a replaceable specific logic means generating a trigger signal for firing a main explosive. CONSTITUTION: An ignition environment sensor for a logic module 12 transmits information to the module delivering an output 56 for closing a static switch 96 and a firing environment sensor for a logic module 14 transmits information to the module delivering an output 74 for closing an upper static switch 72. The logic modules 12, 14 close a dynamic safety release switch 94 to generate release signals at the outputs 54, 76 for supplying power to a voltage control module 16. Firing capacitors 112, 138 are charged, a target is sensed and a firing lag is calculated by the logic module 14. At the end of firing lag, high voltage triggers 110, 136 are fired by trigger modules 126, 148 to explode foil initiators 108, 134.
    • 10. 发明专利
    • SAFETY DEVICE FOR IGNITION CIRCUIT
    • JPH02259399A
    • 1990-10-22
    • JP7951889
    • 1989-03-30
    • NISSAN MOTOR
    • NAKAMURA KENJI
    • F42C11/00F42C15/44
    • PURPOSE:To completely discharge a charging current of a capacitor upon an explosive compound being not exploded by providing a second discharge circuit for discharging the charging current of the capacitor with a current when a first discharge circuit discharges a charging current of the capacitor. CONSTITUTION:An electrolytic capacitor 11 is charged, and when an explosive compound is not exploded, a thyristor S is energized with a timer 2 after a predetermined time. Part of a discharge current flowing through the thyristor S is charged on an auxiliary capacitor 26, and once a positive electrode potential reaches a predetermined potential, a transistor T is conducted for discharging through a loop of a resistance R4 and the transistor T. When voltage E of the electric capacitor 11 reaches about IV with the above discharge, the thyristor S is switched off and the discharge of a first discharge circuit 20 is interrupted. Alternately, since the auxiliary capacitor 26 keeps its discharge by the discharge of the first discharge circuit 20, the conduction of the transistor T is kept by the discharge of the first discharge circuit 20, and it discharges the charging current of the electrolytic capacitor 11 through the second discharge circuit 25 for complete discharge.