BLASTING DEVICE FOR ELECTRONIC DELAY ELECTRONIC DETONATOR

摘要

PURPOSE:To always apply a voltage of a predetermined range to each electric detonator by automatically counting the number of electronic type delay electric detonators, storing it, counting the number of possible blastings, and controlling the charging voltage of a blasting capacitor so as to become equal to the number of charges. CONSTITUTION:A digital value of the number of possible blastings is sequentially displayed by number on a number-of-possible blastings display unit 45, compared with a digital value of the number of charges from a latch circuit 31 by a comparator 46, and supplied to a DC/DC converter 13. If the number of the possible blastings is smaller than the number of the charges, it is quickly charged, and when it becomes the same, and it is gradually charged, a charge complete lamp 47 is lit. If the number of the possible blastings becomes equal to or larger than the number of the charges, the converter 13 is controlled at a three stages through a gate 35 so as to cut OFF the operation signal to the converter 13. Further, if the charged voltage f a blasting capacitor 36 is lowered so that the number of the possible blastings becomes smaller than the number of the charges, the above operation is repeated, and it is always controlled that the number of the possible blastings becomes equal to the number of the charges of the circuit 31.