Design of the High-Safety Aircraft Squib Drive and Control System
摘要
In order to achieve high safety and reliability in the initiation of squibs, this paper designs a high safety aviation squib drive and control system, which mainly includes sensor interfaces, hardware interfaces, software interfaces, and data interfaces. The hardware interface adopts a power output drive method based on inverse time protection to achieve self-recovery and high safety protection of the power drive circuit. The software interface adopts a hierarchical interface fault detection method to identify faults such as squib breakage, terminal output abnormality, achieving accurate isolation and rapid positioning of faults. The data interface uses instruction validity validation to achieve comprehensive processing of instruction data, status data, and BIT data. The experimental results show that the drive and control system has high safety and reliability, which has important practical significance for improving the safety of aircraft systems.