Abstract:The existing multi-point initiation systems mostly use explosive logic networks, which can only detonate in a specific way, lacking flexibility, and are affected by the detonation speed and distance errors of the detonating cord, making it difficult to meet the application requirements of jumping intelligent blockade mines in self-healing minefields for quickly completing single point initiation or arbitrary multi-point synchronous initiation. In response to this issue, a STM32 based multi way initiating circuit for initiating explosive devices is proposed, which adopts design methods such as dual terminal control and low-pass filtering to ensure the safety and anti-interference of the initiating circuit. Combined with the characteristics of the used initiating explosive devices, the parameters of some components are calculated and analyzed. A fixed delay and parallel initiating method is used to reduce the ignition time of the initiating explosive device and the delay time of the initiating hardware, Improve the speed and synchronization of initiating explosive devices. The characteristic analysis shows that the delay from the STM32 output detonation drive signal to the initiation of the initiating explosive device is 403.521μs, it has the ability to detonate quickly. When ignoring the ignition time difference of initiating explosive devices, the maximum time difference for initiating multiple initiating explosive devices is 0.246 μs, it has synchronous initiation.
