The invention provides a high-reliability reusable satellite unlocking circuit, which comprises a charging circuit, an ignition circuit and a leakage circuit, the charging circuit realizes capacitor charging switch control through a relay K1 and a PMOS tube Q1, realizes charging energy storage through two capacitors C1 and C2, realizes relay coil reverse electromotive force elimination through a diode V1, a diode V2, a diode V3 and a diode V4, and is connected with the ignition circuit. A resistor R3 and a resistor R4 realize a relay coil current-limiting protection function, and a diode V5 and a diode V6 prevent current from flowing backward; the core component of the ignition circuit is an NMOS tube Q2, the NMOS tube Q2 is driven to be conducted through an ignition instruction, and a reusable unlocking mechanism such as memory alloy is powered up to achieve unlocking. The discharge circuit is mainly composed of a normally-closed light MOS relay and an MOS tube, the normally-closed light MOS relay is turned on during power failure, automatic discharge is achieved, electrostatic accumulation of a capacitor C1 and a capacitor C2 is prevented, an NMOS tube Q3 can be driven to be turned on through a manual discharge instruction, and the manual capacitor discharge function is achieved.
本发明提供了一种高可靠可复用卫星解锁电路,包括充电电路、发火电路及泄电电路,充电电路由继电器K1与PMOS管Q1实现电容充电开关控制,由两只电容C1和C2实现充电储能,二极管V1、二极管V2、二极管V3、二极管V4实现继电器线圈反向电动势消除,电阻R3、电阻R4实现继电器线圈限流保护功能,二极管V5,二极管V6防止电流倒灌;发火电路的核心部件为NMOS管Q2,通过点火指令驱动NMOS管Q2导通,为记忆合金等可复用解锁机构加电实现解锁;泄电电路主要由常闭光MOS继电器及MOS管组成,断电时常闭光MOS继电器开通,自动泄电,防止电容C1、电容C2静电积累,也可通过手动泄电指令驱动NMOS管Q3导通,实现手动电容泄电功能。
High-reliability reusable satellite unlocking circuit
一种高可靠可复用卫星解锁电路
2024-10-18
Patent
Electronic Resource
Chinese
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