한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제25권5호
  • /
  • Pages.545-551
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  • 2022
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  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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안정적인 정전류 구동 방식의 파이로 스퀴브 회로 설계

Pyro Squib Circuit Design with Stable Constant Current Driving Method

  • 소경재 (국방과학연구소 미사일연구원 3체계단)
  • Soh, KyoungJae (The 3rd Missile Systems PMO, Agency for Defense Development)
  • 투고 : 2022.06.30
  • 심사 : 2022.09.30
  • 발행 : 2022.10.05
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초록

We proposed a design method for constant current pyro squib circuit. The current method using N MOSFET for the stability problem has a weakness of the current change, requiring a new design. This paper identified the problem with conventional squib circuit where the current is reduced by 25 % when maximum resistance is 3 ohms. Thus, we proposed a stable constant current driving circuit using P MOSFET and PNP BJT. We confirmed stable constant circuit operation through simulations and measurements of the proposed circuit design where the current did not change until the resistance reached 3 ohms.

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참고문헌

  1. S. H. Lee, M. H. Baek, "Squib Circuit Design for Activating Pyrotechnic Initiator," The Proceedings of the KSAS Fall Conference, 2020.
  2. B. C. Jang, K. S. Cho, J. B. Shin, B. J. Koo, "The Design of Squib Circuit Using Hybrid Interlock," Journal of the Korea Institute of Military Science and Technology, Vol. 17, No. 4, pp. 404-412, 2014. https://doi.org/10.9766/KIMST.2014.17.4.404
  3. ASTM International, "ASTM Standard B 258-02, Standard Specification for Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid Round Wires Used as Electrical Conductors," 2002.
  4. H. C. Lee, Y. S. Kwon, "Selective Squib Activation and Check Circuit Design for Safeguarded MultiPhase Missions," Journal of the Korea Institute of Military Science and Technology, Vol. 21, No. 5, pp. 684-696, 2018. https://doi.org/10.9766/KIMST.2018.21.5.684
  5. S. S. Jung, G. M. Kwak, D. G. Roh, H. C. Lee, Y. S. Kwon, "A Reliable Constant-Current Driving Circuit Design for the Stable Check and Activation of Pyro Systems," The Proceedings of the KIMST Autumn Conference, pp. 559-560, 2016.