Dynamic triggering and regulating method of omnidirectional inertia switch and omnidirectional inertia switch

Abstract

The invention discloses a dynamic triggering and regulating method of an omnidirectional inertia switch and the omnidirectional inertia switch. The method comprises the following steps: constructing an omni-directional inertia switch with a redundant structure, and performing structure optimization design on the omni-directional inertia switch based on multi-physics coupling analysis, so as to improve the high overload resistance and enhance the trigger stability of the omni-directional inertia switch; the trigger threshold value of acceleration overload is dynamically adjusted through the redundant structure so as to adapt to different damage mechanisms and different task requirements; detecting an external acceleration overload signal based on the dynamically adjusted threshold value, judging whether a damage triggering condition is met or not, and generating a triggering signal if the damage triggering condition is met; based on the trigger signal, flexible structure electrodes in the omnidirectional inertia switch are driven to respond to acceleration impact, and contact between the electrodes is achieved. According to the invention, the technical problem of inaccurate response of the omnidirectional inertia switch is solved.

Description

Technical Field

[0001] The present invention relates to the field of omnidirectional inertial switches, and in particular to a dynamic triggering and control method of an omnidirectional inertial switch and an omnidirectional inertial switch. Background Art

[0002] An omnidirectional inertial switch is a triggering device based on an inertial sensor. It can trigger the damage mechanism when the ammunition is subjected to acceleration in a specific direction or magnitude. It has the advantages of omnidirectional response and threshold dynamic interference resistance. That is, it can accurately sense inertial changes in any spatial direction and trigger damage when the set threshold is exceeded. Compared with traditional inertial switches that are limited by single-axis sensitivity, fixed thresholds, and weak interference resistance, these advantages make it the key to low-cost, precise, and efficient strikes in the context of future all-domain, three-dimensional combat. However, existing omnidirectional inertial switches still suffer from the technical problem of inaccurate response.

[0003] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0004] The embodiments of the present invention provide a dynamic triggering and control method of an omnidirectional inertial switch and an omnidirectional inertial switch, so as to at least solve the technical problem of inaccurate response of the omnidirectional inertial switch.

[0005] According to one aspect of an embodiment of the present invention, a dynamic triggering and control method for an omnidirectional inertial switch is provided, comprising: constructing an omnidirectional inertial switch with a redundant structure, and performing structural optimization design on the omnidirectional inertial switch based on multi-physics field coupling analysis to improve its high overload resistance and enhance triggering stability; dynamically adjusting the acceleration overload trigger threshold through the redundant structure to adapt to different damage mechanisms and differentiated mission requirements; based on the dynamically adjusted threshold, detecting an external acceleration overload signal, and determining whether the damage trigger condition is met, and if so, generating a trigger signal; and based on the trigger signal, driving the flexible structure electrodes in the omnidirectional inertial switch to respond to the acceleration impact and achieve contact between the electrodes.

[0006] According to another aspect of an embodiment of the present invention, an omnidirectional inertial switch is provided, which is regulated and triggered using the above method.

[0007] In an embodiment of the present invention, an omnidirectional inertial switch with a redundant structure is constructed and structurally optimized based on multi-physics field coupling analysis to improve its high-overload resistance and enhance triggering stability. The redundant structure dynamically adjusts the acceleration overload trigger threshold to accommodate different damage mechanisms and differentiated mission requirements. Based on the dynamically adjusted threshold, an external acceleration overload signal is detected to determine whether the damage trigger condition is met. If so, a trigger signal is generated. Based on the trigger signal, the flexible structure electrodes in the omnidirectional inertial switch are driven to respond to acceleration shocks, achieving contact between the electrodes. This method solves the technical problem of inaccurate response of omnidirectional inertial switches. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0009] Figure 1 is a flow chart of a dynamic triggering and control method of an omnidirectional inertial switch according to an embodiment of the present invention;

[0010] Figure 2 is a flow chart of another method for dynamically triggering and controlling an omnidirectional inertial switch according to an embodiment of the present invention;

[0011] Figure 3 is a structural diagram of a control circuit according to an embodiment of the present invention;

[0012] Figure 4 is a model diagram of a MEMS inertia switch according to an embodiment of the present invention, wherein (a) is a contact model of a traditional inertia switch; (b) is a physical model of a contact-enhanced inertia switch provided by the present application;

[0013] Figure 5 2. It is a simulation analysis framework diagram of an omnidirectional inertia switch according to an embodiment of the present invention;

[0014] Figure 6 3 is a simulation result diagram of the maximum equivalent stress-Y axis (axial direction) according to an embodiment of the present invention;

[0015] Figure 7 1 is a simulation result diagram of the maximum deformation distribution along the Y axis (axial direction) according to an embodiment of the present invention;

[0016] Figure 8 3 is a simulation result diagram of the maximum equivalent stress-X axis (axial direction) according to an embodiment of the present invention;

[0017] Figure 91 is a simulation result diagram of the maximum deformation distribution along the X-axis (axial direction) according to an embodiment of the present invention;

[0018] Figure 10 3 is a simulation result diagram of the maximum equivalent stress-Z axis (axial direction) according to an embodiment of the present invention;

[0019] Figure 11 3 is a simulation result diagram of the maximum deformation distribution along the Z axis (axial direction) according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] According to an embodiment of the present invention, a method embodiment of a dynamic triggering and control method of an omnidirectional inertial switch is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0023] Figure 1 The present invention is a method for dynamically triggering and controlling an omnidirectional inertial switch according to an embodiment of the present invention. Figure 1 As shown, the method includes the following steps:

[0024] Step S102 : constructing an omnidirectional inertial switch with a redundant structure, and performing structural optimization design on the omnidirectional inertial switch based on multi-physics field coupling analysis to improve its high overload resistance and enhance triggering stability.

[0025] The redundant structure includes multiple adjustable mass blocks or elastic components for dynamically setting the threshold value before or during flight. The multi-physics field coupling analysis includes at least one of the following: modal analysis, harmonic response analysis, static structural analysis, and material property analysis, wherein the modal analysis is used to identify the natural vibration frequencies and modal vibration shapes that are prone to false triggering; the harmonic response analysis is used to evaluate the dynamic response characteristics of the triggering structure at different frequencies; the static structural analysis is used to evaluate the stress and displacement distribution of the structure under high overload in different directions and identify potential failure points; and the material property analysis is used to optimize the deformation tolerance and recovery ability of the metal elastomer structure under high overload conditions.

[0026] The omnidirectional inertial switch uses nickel as a spring and sensitive structural material, and its maximum stress does not exceed a preset stress threshold, wherein the preset stress threshold is the maximum stress value operating within the plastic deformation range to prevent damage.

[0027] Step S104: dynamically adjusting the acceleration overload triggering threshold through the redundant structure to adapt to different damage mechanisms and differentiated mission requirements;

[0028] Step S106: detecting an external acceleration overload signal based on the dynamically adjusted threshold value, and determining whether a damage trigger condition is satisfied. If so, generating a trigger signal;

[0029] Step S108 : Based on the trigger signal, driving the flexible structure electrodes in the omnidirectional inertial switch to respond to the acceleration impact, thereby achieving contact between the electrodes.

[0030] The flexible structure is used to extend the electrode contact time to improve the trigger response accuracy and achieve stable output of electronic signals; the flexible structure is made of elastic material and is obtained based on the spring constant, damping coefficient and limit structure, which is used to extend the contact time and ensure stable rebound.

[0031] The contact between the electrodes is converted into a controllable square wave signal through a high-frequency pulse shaping module, and its duration is adjusted to output a continuous and effective electronic trigger signal; specifically, the high-frequency pulse shaping module converts the narrow pulse signal into a square wave signal with controllable duration through the charging and discharging characteristics of the capacitor, and captures effective trigger information during the maintenance period of the square wave signal.

[0032] The electronic trigger signal is buffered and delayed by a delay loop circuit to achieve a smooth transition from mechanical triggering to electronic triggering. Specifically, the delay loop circuit is composed of a delay loop composed of three-stage MOS transistors, whose delay time is adjustable and is used to buffer the transient transition between mechanical triggering and electronic switching.

[0033] A self-locking switch circuit maintains the electronic trigger state and uses it as the activation signal for the damage system, enabling precise control of the damage action. Specifically, the self-locking switch circuit includes two MOS transistors, forming a positive feedback loop to keep the switch in the on state, ensuring that the damage signal is reliably maintained.

[0034] Figure 2 This is a dynamic triggering method based on an omnidirectional inertial switch according to an embodiment of the present invention. The dynamic triggering method consists of three parts: an efficient and intelligent damage dynamic triggering decision-making component, an omnidirectional switch precise control component, and an omnidirectional switch multi-physics coupling analysis component. The efficient and intelligent damage dynamic triggering decision-making component includes a precise triggering method, efficient and intelligent damage, and circuit design. The precise triggering method ensures that the damage mechanism is triggered at the appropriate time and under appropriate conditions, while efficient and intelligent damage emphasizes optimizing the damage effect. Appropriate triggering decisions and precise control methods are the foundation for achieving these functions. The omnidirectional switch precise control method covers overload resistance and precise threshold control. Overload resistance ensures that the switch can still operate normally under extreme conditions, while precise threshold control ensures accurate switch response under specific conditions. The omnidirectional inertial switch multi-physics coupling analysis component involves structural optimization design, vacuum characteristics analysis, solid mechanics analysis, trigger element analysis, and material property analysis. These analyses aim to optimize the switch's performance and reliability through multi-physics coupling analysis. This embodiment aims to achieve efficient, intelligent, and precise damage dynamic triggering decision-making and control through multi-faceted analysis and optimization.

[0035] like Figure 2 As shown, the method includes the following steps:

[0036] Step S202: Determine a diversified, efficient, and intelligent damage dynamic triggering decision.

[0037] In order to achieve accurate damage triggering, a redundant structure is designed outside the original inertial switch, which can realize dynamic adjustment of threshold value, prefabricated dynamic adjustment driven by different damage mechanisms and differentiated tasks, and realize diversified, efficient and intelligent damage triggering. MEMS inertial trigger circuit can be used in occasions such as power-on triggering of missile-borne power supply and digital pulse counting. Among them, power-on triggering is the most commonly used working form, and its specific circuit is as follows: Figure 3 shown.

[0038] When the mechanical switch senses an acceleration overload, the potential at the output of the mechanical switch immediately changes from low to high. Since the duration of the high-level state is extremely short, the signal can be approximated as a high-frequency pulse signal. After the high-frequency narrow pulse signal is converted into a square wave signal with controllable duration, the voltage stabilizing part of the circuit maintains the voltage across the pulse capture capacitor during the duration of the square wave signal. Afterwards, the delay loop circuit composed of three-level metal oxide semiconductor (MOS) transistors performs two actions, namely gradually releasing the instantaneous voltage impact of the MOS switch, and realizing the delay in the transition process from the mechanical switch state to the electronic switch state. The delay time is adjustable. Finally, the switch self-locking loop circuit composed of two MOS transistors maintains the on state of the electronic switch. The specific circuit design is as follows: Figure 3 shown.

[0039] Step S204: precise control of the omnidirectional inertial switch.

[0040] 1) Optimize the high overload resistance of the omnidirectional inertial switch for precise control.

[0041] In addition to implementing prefabricated dynamic adjustments driven by different damage mechanisms and differentiated tasks, the omnidirectional inertial switch also requires precise trigger control. Its precise control capability is closely related to its overload resistance. Only by ensuring that its structural integrity and effectiveness after transient high overload shocks can its efficient and precise control of the threshold be guaranteed. The overload resistance of the omnidirectional inertial switch is extremely important to ensure its working performance and is directly related to the stability of the equipment under extreme conditions. When the omnidirectional overload switch is subjected to an acceleration shock exceeding 10,000g, its internal sensitive structure and spring structure are extremely susceptible to extreme acceleration overload. The high overload resistance ensures that the inertial switch can maintain its structural integrity and function unchanged when subjected to high acceleration shocks, avoiding false triggering or permanent damage caused by transient stress.

[0042] 2) Optimize the contact time for precise control of the omnidirectional inertial switch.

[0043] Facing diverse damage targets, whether the contact time of the omnidirectional inertial switch is optimized is directly related to the effectiveness of striking the target. Figure 4 (a) represents the traditional rigid contact inertia switch physical model, resulting in a short contact time and inconvenient signal processing. Consequently, design methods have been proposed to enhance contact performance, such as designing latch-type inertia switches or modifying the electrode surface properties to extend contact time. While these methods can undoubtedly extend contact time, they increase process complexity and application cost. Figure 4 (b) This application proposes a contact-enhanced inertial switch, in which the fixed electrode is designed as a flexible structure to extend the contact time.

[0044] Figure 4The inertial switch shown in (b) can be simplified into a mass-spring system and an electrode-spring system, forming a double mass-spring system model. In the initial state of the new model, the distance between the two electrodes is x0; m and m1 are the equivalent masses of the mass-spring system and the flexible electrode respectively. k and k1 are the system stiffnesses of the movable electrode spring system and the flexible fixed electrode spring in the sensitive direction respectively. x and x1 represent the displacements of the movable electrode mass and the flexible fixed electrode respectively. In addition, c and c1 represent the damping coefficients of the switch spring mass system and the flexible fixed electrode respectively.

[0045] When a sufficiently large acceleration is applied to the switch, the response equations of the spring mass system and the flexible fixed electrode can be described as follows:

[0046] (1) When x - x1 < x0, the movable electrode of the sensitive mass cannot contact the flexible fixed electrode. The response motion equations of both can be expressed by the dynamic equilibrium equation as

[0047]

[0048] Here, x and x1 represent the displacements of the movable electrode mass and the flexible fixed electrode respectively. The acceleration a(t) is actually usually a half-sine waveform. Usually, the displacement x1 of the flexible fixed electrode can be ignored. Because for an inertial switch, compared with the displacement x of the movable electrode mass, the displacement x1 of the fixed electrode is so small that it can be ignored.

[0049] (2) When x - x1 > x0, the sensitive mass contacts the flexible fixed electrode. Assume the first contact time is rt. When the displacement x of the movable electrode mass satisfies the following equation, the mass starts to contact the flexible fixed electrode:

[0050] x(tr) = x0

[0051] Assume the initial contact condition is x c (0) = x0 and The dynamic equilibrium equation during the contact process can be expressed as:

[0052]

[0053] Among them, xc is the displacement of the movable electrode mass during the contact process, and cc represents the damping coefficient of the inertial switch during the contact process.

[0054] (3) After the mass and the flexible fixed electrode reach the maximum displacement in the sensitive direction, they start to rebound; when the displacement xc of the mass is equal to the distance x0 between the two electrodes again, the two electrodes will start to separate. The contact time tc of the first contact is the time interval from when the mass starts to contact the flexible fixed electrode until they start to separate, and is numerically determined by the minimum positive root of the equation.

[0055] Given the known parameters m, m1, k, k1, c, and c1, a numerical solution can be obtained using MATLAB software. However, deriving numerical solutions for inertia switches is too complex. These solutions are often obtained using finite element simulations. Therefore, ANSYS finite element simulations were used for the complex dynamic contact process in this application.

[0056] Through analytical analysis of the traditional inertial switch model, the threshold acceleration of the dual mass-spring system model here has the same expression as the traditional threshold acceleration. When the half-sine waveform acceleration a(t) = a0sinω0t0 acts on the flexible contact switch, the threshold acceleration is:

[0057]

[0058] Where a0 is the peak value of the half-sine acceleration, t0 is the half period of the acceleration waveform, and the eigenfrequency of the inertia switch is ath represents the threshold acceleration, k represents the stiffness coefficient, and m represents the mass.

[0059] In practical applications, the pulse width of acceleration applied to an inertial switch is typically very small. The movable electrode reaches its maximum displacement before the damping has time to absorb energy within the inertial switch structure, so the system's damping can often be ignored. Therefore, the theoretical analysis and simulation of the inertial microswitch device under acceleration in this application can employ a simple and accurate "spring-mass" model, consisting of a mass with a finite mass m and a massless spring with an elastic coefficient k. The dynamic equilibrium equation for the mass can be expressed as:

[0060]

[0061] Step S206: multi-physics field coupling analysis of the omnidirectional inertial switch.

[0062] The optimization process of the omnidirectional inertial switch focuses on optimizing its performance through multi-physics coupling analysis, such as Figure 5As shown, this process encompasses multiple aspects, including modal analysis, harmonic response evaluation, and static structural analysis, primarily focusing on applications in solid mechanics. First, the modal analysis phase focuses on determining the inertia switch's natural frequencies and vibration modes (i.e., mode shapes). This step helps identify vibration modes that may lead to false triggering and provides a basis for subsequent design optimization. This analysis also provides key information about the system's vibration characteristics, including amplitude-frequency and phase-frequency curves, which are crucial for understanding the triggering mechanism. Next, harmonic response analysis further explores the inertia switch's dynamic behavior at different frequencies. Detailed analysis of the amplitude-frequency and phase-frequency curves provides a deep understanding of the impact of vibration on the inertia switch's performance, particularly in the event of false triggering. Furthermore, this analysis helps predict the deformation distribution of the core structure under specific acceleration shocks, guiding structural optimization to improve overload resistance. Finally, combining the principles of solid mechanics and electrostatics, a comprehensive analysis of the omnidirectional inertia switch is conducted, with particular emphasis on the interaction between the trigger signal and the triggering mechanism in the coupled state. This approach effectively shortens response time and increases electrode contact time, significantly improving overall switch performance.

[0063] This characteristic not only enhances the device's applicability in harsh environments, such as aerospace and automotive safety systems, but also improves the robustness and safety of the overall system. Therefore, developing inertial switches with high overload resistance is key to achieving high-performance, high-reliability sensing and control systems.

[0064] When conducting a static mechanical analysis of the trigger structure of the omnidirectional inertial switch, the static mechanical module of the finite element simulation software was used to apply an acceleration load of 20,000g in the X, Y, and Z axes to evaluate the stress distribution and displacement of the core structure under extreme conditions. The high overload conditions that may be encountered in actual working environments were simulated; by observing and analyzing the stress concentration areas and maximum displacement of the structure under each load condition, potential failure points and deformation modes were identified, thus providing a basis for optimized design and ensuring that the inertial switch can maintain structural integrity and functional reliability in the face of severe impact. The simulation results are as follows: Figures 6 to 11 shown.

[0065] When an acceleration overload shock of 20,000g is applied in the axial direction (Y-axis), the maximum equivalent stress distribution shows that the maximum equivalent stress on the core structure of the omnidirectional inertial switch is mainly distributed in the support beam spring. The maximum equivalent stress is 145.7MPa, which is far less than the yield strength of 300MPa of nickel. The maximum deformation occurs in the core trigger structure (moving electrode) of the inertial switch, with a displacement value of approximately 9.3μm, which is within the range of plastic deformation. This will cause the moving electrode to produce axial reciprocating motion when subjected to an overload shock. Therefore, when designing structures that block and limit displacement, the axial and radial displacements caused by the acceleration shock should be considered separately.

[0066] When an acceleration overload shock of 20,000g is applied in the axial direction (X-axis), the maximum equivalent stress distribution shows that the core structure of the omnidirectional inertial switch is subjected to a maximum equivalent stress of 92.3MPa, far less than the yield strength of 300MPa of metallic nickel. The maximum deformation occurs in the core trigger structure (moving electrode) of the inertial switch, with a displacement value of approximately 3.5μm. Within the range of plastic deformation, this overload shock causes the moving electrode to produce radial periodic reciprocating motion. Therefore, when designing the structure to block and limit displacement, the radial limit structure should be primarily considered to ensure the stable operation of the omnidirectional inertial switch.

[0067] When an acceleration overload shock of 20,000g is applied in the axial direction (Z-axis), the maximum equivalent stress distribution shows that the core structure of the omnidirectional inertial switch is subjected to a maximum equivalent stress of 141.8MPa, far less than the yield strength of 300MPa of nickel. The maximum deformation occurs in the core trigger structure (moving electrode) of the inertial switch, with a displacement value of approximately 17nm. Within the plastic deformation range, this overload shock causes the moving electrode to produce radial periodic reciprocating motion. Therefore, when designing the blocking and limiting displacement structure, the requirements in the X-axis direction are basically consistent. The structural and limiting position design ensures the stable operation of the omnidirectional inertial switch.

[0068] The support spring converts kinetic energy into elastic potential energy, and absorbs and buffers the impact force caused by acceleration through its deformation, thereby reducing the maximum equivalent stress on the core sensitive components to a certain extent, further ensuring the integrity and normal operation of the core sensitive components. At the same time, in order to enhance the overload resistance of the omnidirectional inertial switch, emphasis should be placed on optimizing the spring design. Specific measures include increasing the number of springs to disperse stress, adopting innovative structures such as double-layer or multi-layer spring systems to improve overall rigidity and stability, and selecting high-strength, high-elasticity materials (such as special alloys and composite materials), thereby effectively improving the load-bearing capacity and durability of the spring assembly without reducing contact time and achieving precise rebound control, ensuring reliable operation under extreme conditions and extending service life. Such optimization can not only alleviate the stress concentration problem of core components, but also further reduce response time.

[0069] The present application also provides an omnidirectional inertial switch, which is triggered and controlled using the above method, which will not be described in detail here.

[0070] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A dynamic triggering and control method for an omnidirectional inertial switch, characterized in that: include: Construct an omnidirectional inertial switch with a redundant structure and optimize its structure based on multi-physics field coupling analysis to improve its high overload resistance and enhance triggering stability; The redundant structure is used to dynamically adjust the acceleration overload trigger threshold to adapt to different damage mechanisms and differentiated mission requirements; Based on the dynamically adjusted threshold, detecting an external acceleration overload signal and determining whether a damage trigger condition is satisfied, and if so, generating a trigger signal; Based on the trigger signal, the flexible structure electrodes in the omnidirectional inertial switch are driven to respond to the acceleration impact, thereby achieving contact between the electrodes.

2. The method according to claim 1, characterized in that After achieving contact between the electrodes, the method further includes: The flexible structure is used to extend the electrode contact time, thereby improving the trigger response accuracy and achieving stable output of electronic signals; The contact between the electrodes is converted into a controllable square wave signal through a high-frequency pulse shaping module, and its duration is adjusted to output a continuous and effective electronic trigger signal; The electronic trigger signal is buffered and delayed by a delay loop circuit to achieve a smooth transition from mechanical triggering to electronic triggering; A self-locking switch circuit is used to maintain the electronic trigger state, and it is used as a starting signal for the destruction system to achieve precise control of the destruction action.

3. The method according to claim 2, characterized in that The redundant structure includes a plurality of adjustable mass blocks or elastic components for realizing dynamic setting of the threshold value before or during flight.

4. The method according to claim 2, characterized in that The high-frequency pulse shaping module converts a narrow pulse signal into a square wave signal with controllable duration through the charge and discharge characteristics of the capacitor, and captures effective trigger information during the maintenance period of the square wave signal.

5. The method according to claim 2, characterized in that The delay loop circuit is composed of a delay loop composed of three-stage MOS transistors, the delay time of which is adjustable and is used to buffer the transient transition between mechanical triggering and electronic switching.

6. The method according to claim 2, characterized in that The self-locking switch circuit includes two MOS transistors, which form a positive feedback loop to keep the switch in an on state, thereby ensuring that the damage signal is reliably maintained.

7. The method according to claim 1, wherein the multi-physics coupling analysis comprises at least one of the following: modal analysis, harmonic response analysis, static structural analysis, and material property analysis, wherein: The modal analysis is used to identify natural vibration frequencies and modal shapes that are prone to false triggering; the harmonic response analysis is used to evaluate the dynamic response characteristics of the triggering structure at different frequencies; the static structural analysis is used to evaluate the stress and displacement distribution of the structure under high overload in different directions and identify potential failure points; The material property analysis is used to optimize the deformation tolerance and recovery ability of the metal elastomer structure under high overload conditions.

8. The method according to claim 1, characterized in that The flexible structure is made of elastic material and is obtained based on a spring constant, a damping coefficient and a limiting structure, so as to extend the contact time and ensure stable rebound.

9. The method according to claim 1, characterized in that The omnidirectional inertial switch uses nickel as a spring and a sensitive structural material, and its maximum stress does not exceed a preset stress threshold, wherein the preset stress threshold is the maximum stress value that operates within the plastic deformation range to prevent damage.

10. An omnidirectional inertial switch, characterized in that: The method according to any one of claims 1 to 9 is used for triggering.

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