The Design of Electronic Delay Detonator
Zhao Guang Li · Advanced materials research · 2012
Abstract. In this paper, aiming at the questions that electronic delay detonators have low delay precision and are easily affected by the blast wave in engineering blasting, the delay and control module circuit of electronic delay detonators is designed based on PLD, according to the principle of electronic delay detonator. The design proposal of crystal oscillator with high overload resistance and the chose of charging capacitor are put forward. The practice proved that this system has better stability and reliability. And it can reach to the design purposes of the impact resistance high Precision timing. Introduce In recent years, with the development of national economy and the acceleration of social pace, the increase of the large engineering, such as urban building demolition, construction of railway, mine safety mining, and rivers flood, makes the increase of the application of the blast and expand in size. In addition, the use of blasting has a very important role in the areas of reducing labor intensity, speeding up the construction progress and ensuring project safety. Millisecond delay blasting, which is also known millisecond blasting, is the blasting technique that the explosive package is detonated according different time by the use of millisecond delay detonator