A detectable and resettable rotating MEMS safety system for use in weak environmental forces

Abstract

This invention discloses a detectable and resettable rotating MEMS safety system for use in weak environmental forces, relating to the field of fuze safety systems. It includes: a rotor comprising a circular rotor base plate with detonation holes for mounting detonators; a stator comprising a stator base, the center of which is rotatably connected to the rotor base, with detonation transmission holes on the stator base; the detonation holes can be directly aligned with the transmission holes, or they can be offset from each other; a rotation drive system comprising a rotor core mounted on the rotor base plate and a second, third, and fourth electromagnet respectively mounted on the stator base; a stroke limiting mechanism comprising an arc-shaped groove and a limiting protrusion fixed to the rotor base plate; and a detonation control circuit, with the second, third, and fourth electromagnets electrically connected to the detonation control circuit. This invention exhibits good stability and safety.

Description

Technical Field

[0001] This invention relates to the field of fuse safety system technology, and in particular to a detectable and resettable rotating MEMS safety system for use in weak environmental forces. Background Technology

[0002] Modern fuze development is increasingly trending towards intelligence, miniaturization, and integration. Fuzes designed using Microelectromechanical Systems (MEMS) technology offer advantages such as low cost, parallel processing, mass production, high design efficiency, and ease of system integration. Miniaturized MEMS-based fuzes can fit within limited space, providing more room for the integration of communication, sensing, and detonation sequence components. Conventional ammunition includes a detonation control circuit, detonation sequence (transducer, initiator, detonating / propellant charge, main charge), and a safety system.

[0003] The safety system is the core component of the fuse, and it achieves energy transfer and isolation through a movable explosion-proof mechanism. Currently, considering the requirements for self-disabling and self-failure of ammunition, the safety system often needs to also have a recoverable function after disabling. Therefore, its performance is crucial to ensuring the safety, reliability, and destructive efficiency of the weapon system.

[0004] MEMS safety systems are classified according to their driving principles, mainly including environmental force drive, electrothermal drive, electromagnetic drive, pyrotechnic drive, and other drive forms. Considering the simplicity, reliability, and low drive energy requirements of the motion form, electromagnetic drive is a relatively simple, reliable, and adaptable solution. It can be applied to conditions with weak environmental forces (weak environmental forces refer to those with small recoil and centrifugal forces, which usually overlap with the overload values ​​caused by environmental vibrations to a certain extent, and therefore cannot be used as a release condition) and can be combined with advanced silicon-based manufacturing techniques.

[0005] However, existing electromagnetically driven MEMS safety systems achieve linear motion, limited by the electromagnetic force of the electromagnets, typically with a displacement range of around 1 mm, making them inconvenient to use. Furthermore, current MEMS safety systems often only reach the open-loop stage of triggering the safety release command, failing to determine whether the safety has actually been released, resulting in poor security. Summary of the Invention

[0006] The purpose of this invention is to provide a detectable and resettable rotating MEMS safety system applicable to weak environmental forces, so as to solve the problems existing in the prior art and improve the safety of the fusible MEMS safety system.

[0007] To achieve the above objectives, the present invention provides the following solution:

[0008] This invention provides a detectable and resettable rotating MEMS safety system for use in weak environmental forces, comprising:

[0009] The rotor includes a circular rotor base plate, on which an initiation hole for mounting an initiation explosive is provided;

[0010] The stator includes a stator base, a circular groove corresponding to the rotor base plate, the rotor base plate being disposed in the circular groove, and the center of the rotor base plate being rotatably connected to the stator base. The stator base is provided with a detonation hole for installing a detonating explosive. The detonating explosive hole can be directly opposite the detonation hole, and the detonating explosive hole can also be offset from the detonation hole.

[0011] A rotation drive system includes a rotor core disposed on the rotor base plate and a second electromagnet, a third electromagnet, and a fourth electromagnet respectively disposed on the stator base. The second electromagnet, the third electromagnet, and the fourth electromagnet are evenly spaced along the circumference of the rotor base plate and are all located at the edge of the circular groove. The second electromagnet, the third electromagnet, and the fourth electromagnet can all provide magnetic attraction force to the rotor core to drive the rotor base plate to rotate relative to the stator base plate.

[0012] The stroke limiting mechanism includes an arc-shaped groove disposed on the edge of the circular groove and a limiting protrusion fixed on the rotor substrate. The limiting protrusion is located in the arc-shaped groove, and the limiting protrusion cooperates with the end of the arc-shaped groove to limit the rotation angle of the rotor substrate.

[0013] The detonation control circuit includes a second electromagnet, a third electromagnet, and a fourth electromagnet, all of which are electrically connected to the detonation control circuit.

[0014] Preferably, it also includes a pyrotechnic limiting safety device, which includes a pyrotechnic limiting element, a pyrotechnic limiting groove, a pyrotechnic release and detonation element electrically connected to the detonation control circuit, and a pyrotechnic release and detonation explosive disposed on the pyrotechnic release and detonation element. The pyrotechnic limiting groove is disposed on the rotor base plate. One end of the pyrotechnic limiting element is located in the pyrotechnic limiting groove, and the other end is fixedly connected to the stator base. The detonation control circuit can trigger the pyrotechnic release and detonation element. After being triggered, the pyrotechnic release and detonation element can detonate the pyrotechnic release and detonation explosive. After being detonated, the pyrotechnic release and detonation explosive can break the pyrotechnic limiting element.

[0015] Preferably, it also includes an electromagnetic safety device, which includes a first electromagnet, a limiting core, and a safety limiting groove and a release limiting groove respectively disposed on the stator base. The edge of the rotor base plate is provided with a mounting groove corresponding to the limiting core. Both ends of the limiting core are respectively connected to the mounting groove through an elastic rod. The first electromagnet is disposed on the rotor base plate. The first electromagnet is electrically connected to the detonation control circuit. When the first electromagnet is closed, the end of the limiting core away from the first electromagnet can extend into the safety limiting groove or the release limiting groove. When the first electromagnet is opened, the end of the limiting core away from the first electromagnet will disengage from the safety limiting groove or the release limiting groove.

[0016] Preferably, it also includes a release monitoring unit, which includes a photoelectric sensor fixed on the stator substrate and a light-transmitting hole fixed on the rotor substrate. The photoelectric sensor includes a through-beam light source and a receiver. When the detonation hole is facing the detonation transmission hole, the through-beam light source and the receiver are simultaneously facing the light-transmitting hole. The photoelectric sensor is electrically connected to the detonation control circuit.

[0017] Preferably, a rotating shaft is provided at the center of the rotor substrate, a bearing is mounted on the rotating shaft, a bearing seat is provided on the circular groove, the bearing is mounted on the bearing seat, and the rotor substrate is rotatably engaged with the stator base through the bearing.

[0018] Preferably, a total magnetic attraction surface is provided on the side of the rotor core away from the center of the rotor base plate, and the total magnetic attraction surface is a plane; when neither the pyrotechnic limit safety nor the electromagnetic safety is released, the end of the limit core away from the first electromagnet extends into the safety limit groove, the limit protrusion contacts the first end of the arc-shaped groove, the detonator hole and the detonation transmission hole are offset from each other, the second electromagnet, the third electromagnet and the fourth electromagnet are successively away from the rotor core, and there is an angle between the total magnetic attraction surface and the end face of the second electromagnet.

[0019] Preferably, when the end face of the fourth electromagnet is facing the total magnetic attraction surface, the limiting protrusion is in contact with the second end of the arc-shaped groove, the detonator hole is facing the detonation transmission hole, and the end of the limiting iron core away from the first electromagnet can extend into the release limiting groove.

[0020] Preferably, it also includes a detonation transducer electrically connected to the detonation control circuit, the detonation transducer being used to detonate the detonating charge in the detonation hole.

[0021] The present invention achieves the following technical effects compared to the prior art:

[0022] The stator and rotor of the detectable and resettable rotating MEMS safety system applied to weak environmental forces of the present invention can rotate relative to each other. The detonation hole is on the rotor, and its stroke can be enlarged as the rotor radius increases, which can improve safety and reliability.

[0023] Furthermore, the protection release monitoring unit in this invention detects the protection release status through a miniature photoelectric sensor, which can effectively realize intelligent control of the security system.

[0024] Furthermore, the detectable and resettable rotary MEMS safety system of the present invention, applied to weak environmental forces, can be reset during use. Even if the detonation hole is aligned with the detonation transmission hole, as long as it has not been detonated, the rotor can be driven to reset by the rotation drive system, so that the detonation hole and the detonation transmission hole are misaligned. By setting an electromagnetic safety device, the ammunition is kept in a safe state, which is convenient to use. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the detectable and resettable rotating MEMS safety system applied to weak environmental forces according to the present invention;

[0027] Figure 2 This is a schematic diagram of the stator structure in this invention;

[0028] Figure 3 This is a schematic diagram of the rotor structure in this invention;

[0029] Figure 4 This is a schematic diagram of the structure of the detectable and resettable rotary MEMS safety system for weak environmental forces of the present invention in a safe state;

[0030] Figure 5 This is a schematic diagram of the structure of the detectable and resettable rotary MEMS safety system for weak environmental forces of the present invention after the pyrotechnic limit safety is released;

[0031] Figure 6 This is a schematic diagram of the first rotational state of the detectable and resettable rotating MEMS safety system for weak environmental forces according to the present invention.

[0032] Figure 7 This is a schematic diagram of the second rotation state of the detectable and resettable rotating MEMS safety system for weak environmental forces according to the present invention;

[0033] Figure 8 This is a schematic diagram of the third rotational state of the detectable and resettable rotating MEMS safety system for weak environmental forces according to the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the detectable and resettable rotating MEMS safety system for weak environmental forces of the present invention in a stable release state;

[0035] The components include: 1. Stator base; 2. Rotor base plate; 3. Limiting iron core; 4. Elastic rod; 5. First electromagnet; 6. Rotor iron core; 7. Second electromagnet; 8. Third electromagnet; 9. Fourth electromagnet; 10. Photoelectric sensor; 11. Bearing; 12. Arc-shaped groove; 13. Limiting protrusion; 14. Pyrotechnic limiting component; 15. Pyrotechnic limiting component mounting groove; 16. Circular groove; 17. Safety limiting groove; 18. Release limiting groove; 19. First mounting groove; 20. Second mounting groove; 21. Third mounting groove; 22. Fourth mounting groove; 23. Bearing seat; 24. Detonation hole; 25. Detonating charge hole; 26. Bearing hole; 27. Pyrotechnic limiting groove; 28. Fifth mounting groove; 29. ​​Buckle; 30. Light-transmitting hole. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The purpose of this invention is to provide a detectable and resettable rotating MEMS safety system applicable to weak environmental forces, so as to solve the problems existing in the prior art and improve the safety of the fusible MEMS safety system.

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1-9 As shown, this embodiment provides a detectable and resettable rotating MEMS safety system for use in weak environmental forces, including a rotor, a stator, a rotation drive system, a stroke limit mechanism, an initiation control circuit, a pyrotechnic limit fuse, an electromagnetic fuse, and a release monitoring unit.

[0040] The rotor includes a circular rotor base plate 2, on which detonation holes 25 for mounting detonating explosives are provided. The stator includes a stator base 1, on which a circular groove 16 is provided corresponding to the rotor base plate 2. The rotor base plate 2 is disposed in the circular groove 16, and the center of the rotor base plate 2 is rotatably connected to the stator base 1. Specifically, in this embodiment, a rotating shaft is provided at the center of the rotor base plate 2, and a bearing 11 is mounted on the rotating shaft. A bearing seat 23 is provided on the circular groove 16, and the bearing 11 is mounted on the bearing seat 23. The rotor base plate 2 is rotatably engaged with the stator base 1 through the bearing 11. A bearing hole 26 is also provided on the rotor base plate 2 corresponding to the bearing 11, and the bearing 11 is partially or entirely located in the bearing hole 26.

[0041] The stator base 1 is provided with a detonation hole 24 for installing the detonating explosive; the detonating explosive hole 25 on the rotor base plate 2 can be directly aligned with the detonation hole 24, and the detonating explosive hole 25 on the rotor base plate 2 can also be offset from the detonation hole 24.

[0042] The rotation drive system includes a rotor core 6 disposed on a rotor base plate 2 and a second electromagnet 7, a third electromagnet 8, and a fourth electromagnet 9 respectively disposed on a stator base 1. The second electromagnet 7, the third electromagnet 8, and the fourth electromagnet 9 are evenly spaced along the circumference of the rotor base plate 2 and are all located at the edge of a circular groove 16. The second electromagnet 7, the third electromagnet 8, and the fourth electromagnet 9 can all provide magnetic attraction to the rotor core 6 to drive the rotor base plate 2 to rotate relative to the stator base 1. The second electromagnet 7, the third electromagnet 8, and the fourth electromagnet 9 are respectively mounted on a second mounting groove 20, a third mounting groove 21, and a fourth mounting groove 22 on the stator base 1.

[0043] The travel limiting mechanism includes an arc-shaped groove 12 disposed on the edge of the circular groove 16 and a limiting protrusion 13 fixed on the rotor base plate 2. The limiting protrusion 13 is located in the arc-shaped groove 12, and the limiting protrusion 13 cooperates with the end of the arc-shaped groove 12 to limit the rotation angle of the rotor base plate 2.

[0044] The pyrotechnic limit fuse is a first-level fuse. The pyrotechnic limit fuse includes a pyrotechnic limit component 14, a pyrotechnic limit groove 27, a pyrotechnic release transducer electrically connected to the detonation control circuit, and a pyrotechnic release detonator mounted on the pyrotechnic release transducer. The pyrotechnic limit groove 27 is mounted on the rotor base plate 2. One end of the pyrotechnic limit component 14 is positioned in the pyrotechnic limit groove 27, and the other end is fixedly connected to the pyrotechnic limit component mounting groove 15 on the stator base 1. It should be noted that the pyrotechnic limit... Component 14 is merely set in the pyrotechnic limiting groove 27 and is not fixedly connected to the pyrotechnic limiting groove 27. Pyrotechnic limiting component 14 cooperates with the pyrotechnic limiting groove 27 to limit the rotation of the rotor base plate 2 and prevent the rotor base plate 2 from rotating relative to the stator base 1. The pyrotechnic deactivation and deactivation element can be triggered by the detonation control circuit. After the pyrotechnic deactivation and deactivation element is triggered, it can detonate the pyrotechnic deactivation initiating explosive. After the pyrotechnic deactivation initiating explosive is detonated, it can break the pyrotechnic limiting component 14.

[0045] The electromagnetic fuse is a secondary fuse; the electromagnetic fuse includes a first electromagnet 5, a limiting iron core 3, and a safety limiting groove 17 and a release limiting groove 18 respectively set on the stator base 1. The edge of the rotor base plate 2 is provided with a mounting groove corresponding to the limiting iron core 3. The two ends of the limiting iron core 3 are respectively connected to the mounting groove through an elastic rod 4. The mounting groove is provided with a buckle 29 corresponding to the elastic rod 4. The end of the elastic rod 4 away from the limiting iron core 3 is engaged with the buckle 29. The first electromagnet 5 is installed on the fifth mounting groove 28 on the rotor base plate 2. When the first electromagnet 5 is closed, the end of the limiting iron core 3 away from the first electromagnet 5 can extend into the safety limiting groove 17 or the release limiting groove 18. When the first electromagnet 5 is opened, the end of the limiting iron core 3 away from the first electromagnet 5 will disengage from the safety limiting groove 17 or the release limiting groove 18.

[0046] The protection monitoring unit includes a photoelectric sensor 10 fixed on the stator base 1 and a light-transmitting hole 30 fixed on the rotor base plate 2. The photoelectric sensor 10 is installed on the first mounting groove 19 on the stator base 1. The photoelectric sensor 10 includes a through-beam light source and a receiver. When the detonation hole 25 is directly opposite the detonation transmission hole 24, the through-beam light source and the receiver are simultaneously directly opposite the light-transmitting hole 30.

[0047] This embodiment also includes an initiation transducer electrically connected to the initiation control circuit, which is used to detonate the initiation charge in the initiation hole 25.

[0048] The first electromagnet 5, the second electromagnet 7, the third electromagnet 8, the fourth electromagnet 9, and the photoelectric sensor 10 are electrically connected to the detonation control circuit. The detonation control circuit is used to control the first electromagnet 5, the second electromagnet 7, the third electromagnet 8, the fourth electromagnet 9, the pyrotechnic decontamination transducer, the detonation transducer, and the photoelectric sensor 10, and can be connected to a power supply to power the above components.

[0049] In this embodiment, a total magnetic attraction surface is provided on the side of the rotor core 6 away from the center of the rotor base plate 2. The total magnetic attraction surface is a plane. When the pyrotechnic limit safety and electromagnetic safety are not released, the end of the limit core 3 away from the first electromagnet 5 extends into the safety limit groove 17. The limit protrusion 13 contacts the first end of the arc-shaped groove 12. The detonation hole 25 and the detonation transmission hole 24 are staggered. The second electromagnet 7, the third electromagnet 8 and the fourth electromagnet 9 move away from the rotor core 6 in sequence, and there is an angle between the total magnetic attraction surface and the end face of the second electromagnet 7.

[0050] In this embodiment, when the end face of the fourth electromagnet 9 is facing the total magnetic attraction surface, the limiting protrusion 13 contacts the second end of the arc-shaped groove 12, the detonation hole 25 is facing the detonation transmission hole 24, and the end of the limiting iron core 3 away from the first electromagnet 5 can extend into the release limiting groove 18.

[0051] The working principle of the detectable and resettable rotating MEMS safety system applied to weak environmental forces in this embodiment is as follows:

[0052] First, this embodiment applies to a detectable and resettable rotating MEMS safety system for weak environmental forces, which has three operating states: safe state, safety disarmed state, and reset state. The safe state... Figure 4 As shown;

[0053] The transition from the safe state to the unlocked state requires two levels of unlocking: pyrotechnic limit lock and electromagnetic lock. The pyrotechnic limit lock is the first-level lock, and the electromagnetic lock is the second-level lock. Initially, the elastic rod 4 is stress-free, the pyrotechnic limit mechanism and the limit core 3 are in the pyrotechnic limit groove 27 and the safety limit groove 17 respectively, and the detonator and detonation port 24 are misaligned. When the detonation control system decides to unlock the pyrotechnic limit lock, the pyrotechnic unlocking transducer is energized, detonating the pyrotechnic unlocking detonator, generating a shock wave. Under the action of the shock wave, the pyrotechnic limit mechanism is broken, and the broken part falls downwards, causing the pyrotechnic limit mechanism to detach from the pyrotechnic limit groove 27, thus unlocking the first-level lock. (Refer to...) Figure 5 ;

[0054] After the primary fuse is released, the fuse release control circuit supplies power to the first electromagnet 5. When the first electromagnet 5 is energized, it attracts the limiting core 3, causing the elastic rods 4 on both sides to deform, thus disengaging the limiting core 3 from the safety limiting groove 17 and releasing the circumferential rotation limit. The first electromagnet 5 continues to be energized until the fuse is released. At this time, the second electromagnet 7 is energized. Because the rotor core 6 initially has an angle with the end face of the second electromagnet 7, under the magnetic attraction of the second electromagnet 7 on the rotor core 6, the rotor base plate 2 will rotate to an angle where the total magnetic attraction surface of the rotor core 6 is parallel to the end face of the second electromagnet 7. At this point, the cutting of magnetic field lines is at its maximum, and the electromagnetic force is also at its maximum. (Refer to...) Figure 6 ;

[0055] At this point, the second electromagnet 7 is de-energized, and the third electromagnet 8 is energized. Under the initial rotational inertia and the electromagnetic attraction of the third electromagnet 8, the rotor of the safety system continues to rotate until the total magnetic attraction surface of the rotor core 6 is aligned with the end face of the third electromagnet 8. (Refer to...) Figure 7 ;

[0056] At this point, the third electromagnet 8 is de-energized, and the fourth electromagnet 9 is energized. Under the initial rotational inertia and the electromagnetic attraction of the fourth electromagnet 9, the rotor of the safety system continues to rotate until the total magnetic attraction surface of the rotor core 6 is aligned with the end face of the fourth electromagnet 9. (Refer to...) Figure 8 At this point, the detonating charge is aligned with the detonation hole 24, and the safety is released. At this time, the limiting protrusion 13 contacts the second end of the arc-shaped groove 12 to prevent the safety system rotor from continuing to rotate.

[0057] At this moment, the first electromagnet 5 is de-energized, and the elastic rod 4 returns to its original state due to the elasticity of the material. The limiting iron core 3 moves downward and enters the release limiting groove 18. (Refer to...) Figure 9 This achieves a stable de-protection state for the rotor of the safety system. At this time, the through-beam light source and receiver on the photoelectric sensor 10 are aligned with the photoelectric sensing light-transmitting hole 30 on the rotor of the safety system, and the signal is output to the detonation control circuit, which can realize the monitoring of the de-protection state of the safety system.

[0058] At this time, if the detonation control system receives the detonation signal, it will energize the detonation semiconductor (i.e., the detonation transducer). The detonation semiconductor will detonate the detonating charge. The detonating charge will pass through the already aligned detonation port 24, thereby triggering the detonating charge in the detonation port 24, and finally detonating the main charge, thus amplifying the explosive energy.

[0059] If, after the detonation hole 25 is aligned with the detonation transmission hole 24, the detonation control circuit receives a command to cancel the attack, it needs to transition from the safety release state to the reset state. At this time, the first electromagnet 5 is energized, attracting the limiting core 3 to disengage from the safety release limiting groove 18, releasing the circumferential rotation constraint. Then, the third electromagnet 8 is energized, and the rotor core 6 on the safety system rotor rotates clockwise under the action of electromagnetic force. When the safety system rotor rotates to the point where the rotor core 6 is aligned with the third electromagnet 8, the third electromagnet 8 is de-energized, and the second electromagnet 7 is energized, allowing it to continue rotating. Under the action of electromagnetic force, the iron core 6 rotates clockwise. When the rotor core 6 of the safety system is aligned with the second electromagnet 7, the second electromagnet 7 is de-energized. The safety system rotor continues to rotate under the action of inertia until the limiting protrusion 13 contacts the first end of the arc-shaped groove 12 and stops rotating. At this time, the first electromagnet 5 is de-energized, and the elastic rod 4 returns to its original state due to the elasticity of the material. The limiting iron core 3 moves downward and re-enters the safety limiting groove 17, realizing the reset of the safety system rotor. At this time, the detonator and the detonation hole 24 are misaligned, and the ammunition is in a safe state.

[0060] In the description of this invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A detectable and resettable rotating MEMS safety system for use in weak environmental forces, characterized in that, include: The rotor includes a circular rotor base plate, on which an initiation hole for mounting an initiation explosive is provided; The stator includes a stator base, a circular groove corresponding to the rotor base plate, the rotor base plate being disposed in the circular groove, and the center of the rotor base plate being rotatably connected to the stator base. The stator base is provided with a detonation hole for installing a detonating explosive. The detonating explosive hole can be directly opposite the detonation hole, and the detonating explosive hole can also be offset from the detonation hole. A rotation drive system includes a rotor core disposed on the rotor base plate and a second electromagnet, a third electromagnet, and a fourth electromagnet respectively disposed on the stator base. The second electromagnet, the third electromagnet, and the fourth electromagnet are evenly spaced along the circumference of the rotor base plate and are all located at the edge of the circular groove. The second electromagnet, the third electromagnet, and the fourth electromagnet can all provide magnetic attraction force to the rotor core to drive the rotor base plate to rotate relative to the stator base plate. The stroke limiting mechanism includes an arc-shaped groove disposed on the edge of the circular groove and a limiting protrusion fixed on the rotor substrate. The limiting protrusion is located in the arc-shaped groove, and the limiting protrusion cooperates with the end of the arc-shaped groove to limit the rotation angle of the rotor substrate. The detonation control circuit, wherein the second electromagnet, the third electromagnet, and the fourth electromagnet are respectively electrically connected to the detonation control circuit; It also includes a pyrotechnic limit safety device; it also includes an electromagnetic safety device, which includes a first electromagnet, a limit core, and safety limit slots and release limit slots respectively disposed on the stator base. The rotor base plate has mounting slots corresponding to the limit core. Both ends of the limit core are connected to the mounting slots via elastic rods. The first electromagnet is disposed on the rotor base plate. The first electromagnet is electrically connected to the detonation control circuit. When the first electromagnet is closed, the end of the limit core away from the first electromagnet can extend into the safety limit slot or the release limit slot. When the first electromagnet is opened, the end of the limit core away from the first electromagnet will disengage from the safety limit slot or the release limit slot. The rotor core is away from the... A total magnetic attraction surface is provided on one side of the center of the rotor base plate, and the total magnetic attraction surface is planar. When neither the pyrotechnic limit safety nor the electromagnetic safety is released, the end of the limiting iron core away from the first electromagnet extends into the safety limiting groove, the limiting protrusion contacts the first end of the arc-shaped groove, the detonation hole and the detonation transmission hole are offset from each other, the second electromagnet, the third electromagnet and the fourth electromagnet are sequentially away from the rotor core, and there is an angle between the total magnetic attraction surface and the end face of the second electromagnet; when the end face of the fourth electromagnet is facing the total magnetic attraction surface, the limiting protrusion contacts the second end of the arc-shaped groove, the detonation hole is facing the detonation transmission hole, and the end of the limiting iron core away from the first electromagnet can extend into the safety limiting groove.

2. The detectable and resettable rotating MEMS safety system for weak environmental forces according to claim 1, characterized in that: The pyrotechnic limiting safety includes a pyrotechnic limiting component, a pyrotechnic limiting groove, a pyrotechnic releasing and transducing element electrically connected to the detonation control circuit, and a pyrotechnic releasing and initiating explosive disposed on the pyrotechnic releasing and transducing element. The pyrotechnic limiting groove is disposed on the rotor base plate. One end of the pyrotechnic limiting component is located in the pyrotechnic limiting groove, and the other end is fixedly connected to the stator base. The detonation control circuit can trigger the pyrotechnic releasing and transducing element. After being triggered, the pyrotechnic releasing and transducing element can detonate the pyrotechnic releasing and initiating explosive. After being detonated, the pyrotechnic releasing and initiating explosive can break the pyrotechnic limiting component.

3. The detectable and resettable rotating MEMS safety system for weak environmental forces according to claim 1, characterized in that: It also includes a release monitoring unit, which includes a photoelectric sensor fixed on the stator substrate and a light-transmitting hole fixed on the rotor substrate. The photoelectric sensor includes a through-beam light source and a receiver. When the detonation hole is facing the detonation transmission hole, the through-beam light source and the receiver are simultaneously facing the light-transmitting hole. The photoelectric sensor is electrically connected to the detonation control circuit.

4. The detectable and resettable rotating MEMS safety system for weak environmental forces according to claim 1, characterized in that: A rotating shaft is provided at the center of the rotor base plate, a bearing is mounted on the rotating shaft, a bearing seat is provided on the circular groove, the bearing is mounted on the bearing seat, and the rotor base plate is rotatably engaged with the stator base through the bearing.

5. The detectable and resettable rotating MEMS safety system for weak environmental forces according to claim 1, characterized in that: It also includes a detonation transducer electrically connected to the detonation control circuit, the detonation transducer being used to detonate the detonating charge in the detonation hole.

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