METHOD AND APPARATUS FOR DELAYING TIME OF FIRING FOR AN ELECTRIC BLASTING MACHINE

• Main Authors: LEE, CHUNG IN, RYU, ZOUNG HA
• Format: Patent
• Language: English; Korean
• Published: 14.02.2004
• Edition: 7
• Subjects: AMMUNITION; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

PURPOSE: A method and a system for electronically delaying electric blasting machine are provided to prevent misoperation of blasting and accurately control delay time difference by inspecting whether wire is snapped or not just before blasting and measuring resistance values of blasting circuit. CONSTITUTION: The method for electronically delaying electric blasting machine comprises a step (a) of checking whether passwords of blaster to be inputted correspond to an already stored password when a power supply supplied from battery is supplied; a step (b) of selecting first mode having a constant delay time difference or second mode having a random delay time difference if the passwords of blaster correspond to the stored password in the step (a); a step (c) of inputting the number of ignition elements; a step (d) of inspecting whether a wire connected to the ignition elements is snapped or not and measuring resistance values of blasting circuit; a step (e) of inputting delay time difference for the ignition elements if the first mode is selected in the step (b), and sequentially inputting delay time difference for the respective ignition elements per each of the ignition element if the second mode is selected in the step (b) in case that the respective wires are not snapped, and the resistance values of the blasting circuit are within the available range in the step (c); a step (f) of charging the charging element if charging signals are inputted by charging switch; and a step (g) of performing blasting by discharging electric current charged into the charging element to the ignition elements after it is delayed as much as the delay time difference inputted in the step (e) in case that blasting signals are inputted by blasting switch in the state that the charging signals are impressed. 본 발명은 점화 소자의 지발 시차를 정밀하게 제어할 수 있도록 한 전기 발파기의 전자 지연 방법 및 방법에 관한 것으로서, 배터리를 통해 입력되는 전기 에너지를 충전한 후 발파 신호가 입력될 때 발파자에 의해 설정되는 지발 시차에 따라 충전된 전기 에너지를 점화 소자로 제공하도록 제어하는 제어부를 포함하고, 발파 직전에 와이어의 단선 여부 검사 및 발파 회로의 저항값 측정을 실시함으로써, 발파의 오작동을 미연에 방지할 수 있으며 지발 시차를 정밀하게 제어할 수 있다.