Lightning protection interface circuit based on lightning indirect effect of electromechanical information processor

By designing a lightning protection interface circuit based on resistors, electrostatic protectors and gas discharge tubes, the protection problem of avionics equipment in lightning environments is solved, and the safety and recoverability of the equipment are achieved.

CN223487860UActive Publication Date: 2025-10-28SHAANXI QIANSHAN AVIONICS
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Patent Information

Application Number
CN202422870862.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2025-10-28
Estimated Expiration
2034-11-22

AI Technical Summary

Technical Problem

Existing avionics equipment lacks effective protection in lightning environments, affecting flight safety and mission completion.

Method used

A lightning protection interface circuit consisting of four resistors, an electrostatic protector, and a gas discharge tube is used to introduce lightning signal energy to the chassis ground through the gas discharge tube, and is combined with an ESD protection diode array for secondary protection.

Benefits of technology

Protects avionics from adverse effects in lightning environments and automatically recovers after the interference disappears.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of avionics, and particularly relates to a lightning protection interface circuit based on the lightning indirect effect of an electromechanical information processor. Comprising four resistors, an electrostatic protector and four gas discharge tubes, one ends of the resistors are connected with one ends of the corresponding gas discharge tubes, and the other ends of the resistors are connected with corresponding input and output pins of the electrostatic protector and serve as output ends; the other end of the first gas discharge tube, the other end of the second gas discharge tube and the grounding end of the electrostatic protector are grounded; and the other end of the third gas discharge tube, the other end of the fourth gas discharge tube and the grounding end of the electrostatic protector are grounded.
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Description

Technical Field

[0001] This utility model belongs to the field of aviation electronics technology, specifically relating to a lightning protection interface circuit based on the indirect lightning effect of electromechanical information processing. Background Technology

[0002] Existing products do not meet lightning protection requirements and cannot effectively protect airborne equipment and subsystems that could affect flight safety and mission completion. Aircraft exposed to specified lightning conditions will be adversely affected. Utility Model Content

[0003] Purpose of the utility model: To provide a lightning protection interface circuit based on the indirect effect of lightning on electromechanical information processors, applicable to lightning protection in the aviation field.

[0004] Technical solution:

[0005] A lightning protection interface circuit based on the indirect lightning effect of an electromechanical information processor includes: four resistors, an electrostatic protector, and four gas discharge tubes. One end of resistor R1 is connected to one end of the first gas discharge tube, and the other end is connected to the first input / output pin of the electrostatic protector and serves as the first output terminal.

[0006] One end of resistor R2 is connected to one end of the second gas discharge tube, and the other end is connected to the first input / output pin of the electrostatic protector and serves as the second output terminal.

[0007] One end of resistor R3 is connected to one end of the third gas discharge tube, and the other end is connected to the third input / output pin of the electrostatic protector and serves as the third output terminal.

[0008] One end of resistor R4 is connected to one end of the fourth gas discharge tube, and the other end is connected to the fourth input / output pin of the electrostatic protector and serves as the fourth output terminal.

[0009] The other end of the first gas discharge tube, the other end of the second gas discharge tube, and the grounding terminal of the electrostatic protector are all grounded.

[0010] The other end of the third gas discharge tube, the other end of the fourth gas discharge tube, and the grounding terminal of the electrostatic protector are grounded.

[0011] Furthermore, the gas discharge tube model is P0080TA.

[0012] Furthermore, the electrostatic discharge protector model is (G)SRV05-4S.

[0013] Furthermore, the resistor is a chip-type thick-film fixed resistor.

[0014] Furthermore, the resistor model is RM6332-4WMB5R6J.

[0015] Furthermore, all four resistors have the same resistance value.

[0016] Beneficial effects:

[0017] In the field of avionics, airborne equipment and subsystems that affect flight safety and mission completion should have effective protective measures so that they will not be adversely affected when the aircraft is exposed to the prescribed lightning environment; or they may exhibit sensitive phenomena when exposed to the prescribed lightning environment, but can recover on their own after the interference environment disappears. Attached Figure Description

[0018] Figure 1 This is the circuit schematic diagram of this utility model. Detailed Implementation

[0019] This paper designs a lightning protection interface based on the high-speed signal of an electromechanical information processor to address the indirect effects of lightning.

[0020] like Figure 1 A lightning protection interface circuit based on the indirect lightning effect of an electromechanical information processor includes: four resistors, an electrostatic protector, and four gas discharge tubes. One end of resistor R1 is connected to one end of the first gas discharge tube, and the other end is connected to the first input / output pin of the electrostatic protector and serves as the first output terminal.

[0021] One end of resistor R2 is connected to one end of the second gas discharge tube, and the other end is connected to the first input / output pin of the electrostatic protector and serves as the second output terminal.

[0022] One end of resistor R3 is connected to one end of the third gas discharge tube, and the other end is connected to the third input / output pin of the electrostatic protector and serves as the third output terminal.

[0023] One end of resistor R4 is connected to one end of the fourth gas discharge tube, and the other end is connected to the fourth input / output pin of the electrostatic protector and serves as the fourth output terminal.

[0024] The other end of the first gas discharge tube, the other end of the second gas discharge tube, and the grounding terminal of the electrostatic protector are all grounded.

[0025] The other end of the third gas discharge tube, the other end of the fourth gas discharge tube, and the grounding terminal of the electrostatic protector are grounded.

[0026] The gas discharge tube model is P0080TA.

[0027] The electrostatic discharge protector model is (G)SRV05-4S.

[0028] The resistor is a surface-mount thick-film fixed resistor.

[0029] The resistor model is RM6332-4WMB5R6J.

[0030] All four resistors have the same resistance value.

[0031] When an external lightning strike enters the product, most of the lightning energy is directed to the product's chassis ground via the gas discharge tube (PT0080TA). The remaining portion of the lightning energy is then protected by a secondary ESD protection diode array at the rear.

Claims

1. A lightning protection interface circuit based on the indirect effect of lightning on an electromechanical information processor, characterized in that, include: The system includes four resistors, an electrostatic protector, and four gas discharge tubes. One end of resistor R1 is connected to one end of the first gas discharge tube, and the other end is connected to the first input / output pin of the electrostatic protector and serves as the first output terminal. One end of resistor R2 is connected to one end of the second gas discharge tube, and the other end is connected to the first input / output pin of the electrostatic protector and serves as the second output terminal. One end of resistor R3 is connected to one end of the third gas discharge tube, and the other end is connected to the third input / output pin of the electrostatic protector and serves as the third output terminal. One end of resistor R4 is connected to one end of the fourth gas discharge tube, and the other end is connected to the fourth input / output pin of the electrostatic protector and serves as the fourth output terminal. The other end of the first gas discharge tube, the other end of the second gas discharge tube, and the grounding terminal of the electrostatic protector are all grounded. The other end of the third gas discharge tube, the other end of the fourth gas discharge tube, and the grounding terminal of the electrostatic protector are grounded.

2. The lightning protection interface circuit based on the indirect lightning effect of an electromechanical information processor according to claim 1, characterized in that, The gas discharge tube model is P0080TA.

3. The lightning protection interface circuit based on the indirect lightning effect of an electromechanical information processor according to claim 1, characterized in that, The electrostatic discharge protector model is (G)SRV05-4S.

4. The lightning protection interface circuit based on the indirect lightning effect of an electromechanical information processor according to claim 1, characterized in that, The resistor is a surface-mount thick-film fixed resistor.

5. The lightning protection interface circuit based on the indirect lightning effect of an electromechanical information processor according to claim 1, characterized in that, The resistor model is RM6332-4WMB5R6J.

6. The lightning protection interface circuit based on the indirect lightning effect of an electromechanical information processor according to claim 1, characterized in that, All four resistors have the same resistance value.