CN113834391B - Recoverable MOEMS safety and safety relief device based on optical logic control - Google Patents

Abstract

The invention discloses a recoverable MOEMS (metal oxide semiconductor energy management system) safety and safety relief device based on optical logic control, which comprises a substrate, a supporting anchor point, a direct coupling type optical fiber optical path, an optical path gating driving unit, an active latching mechanism, a reverse locking mechanism and a limiting anchor point. The direct-coupled fiber optic circuit includes an input fiber for transmitting laser energy and an output fiber. The optical path gating driving unit is formed by combining two U-shaped electric heating drivers and is used for driving the incident optical fiber to move. The reverse locking mechanism and the active latching mechanism are both composed of U-shaped electric heating drivers and can be controlled by two types of environment information respectively, wherein the reverse locking mechanism locks the optical fiber, and the active latching mechanism locks the optical path gating driving unit to realize double insurance. The laser fuse system adopts laser as a carrier for transmitting ignition energy, controls on-off logic of a light path through a mechanical structure, has the functions of restorability and power-off retention, and improves the anti-interference capability and the dexterity level of the fuse system.

Description

Recoverable MOEMS safety and safety relief device based on optical logic control

Technical Field

The invention belongs to the technical field of fuse safety systems, and particularly relates to a recoverable MOEMS safety and fuse relieving device based on optical logic control.

Background

With the progress of weapon ammunition systems and electronic technology, the fuse safety system is also developing towards miniaturization and intellectualization. This allows a large number of circuits and electronic components that can perform logic functions to be implemented in the detonator security system, rendering the all-electronic security system susceptible to electromagnetic interference, which can cause the detonator system to malfunction, reducing the safety and reliability of the in-line explosive sequence ammunition weapon system. Therefore, by integrating the optical fiber and the optical energy conversion technology into the electronic safety system, the laser is used as a carrier for transmitting the ignition energy, and the optical fiber is used as a transmission medium of the laser, so that the fuze can effectively avoid electromagnetic interference, and the intrinsic safety of the electronic safety system is improved.

Micro-opto-electro-mechanical systems (MOEMS) is an emerging technology that integrates micro-scale mechanical, optical, and microcircuits. The optical switch based on the MOEMS technology can be applied to a fuze security system, and the control of laser is realized by controlling the on-off of an optical fiber light path. The optical fiber path of the current MOEMS optical switch comprises the following three forms: reflection type optical fiber light path, blocking type optical fiber light path, direct coupling type optical fiber light path. Compared with the reflective optical fiber light path and the blocking optical fiber light path, the direct coupling optical fiber light path has higher energy transmission efficiency.

The micro-driver in the MOEMS optical switch is the key for generating mechanical motion and realizing the on-off control of an optical path. An optical switch based on a direct-coupling optical fiber optical path needs to drive an optical fiber to move, and the performance requirement of a driver is higher. The commonly used micro-driving methods include: electrostatic drive, electromagnetic drive, electrothermal drive, piezoelectric drive, shape memory alloys, and the like. Compared with other driving modes, the driving displacement and driving force of the electrothermal driving under the microscale have good performance.

Disclosure of Invention

The invention aims to provide a recoverable MOEMS safety and safety relief device based on optical logic control, so as to improve the anti-interference performance, miniaturization, intellectualization and dexterity of a fuse safety protection system.

The technical solution for realizing the purpose of the invention is as follows:

a recoverable MOEMS safety and safety relief device based on optical logic control comprises a substrate, a direct coupling type optical fiber light path, a light path gating driving unit, an active latch mechanism and a reverse locking mechanism, wherein the direct coupling type optical fiber light path is connected with the substrate through a support anchor point;

the direct coupling type optical fiber light path is provided with an input end and an output end; dislocation and alignment are arranged between the input end and the output end;

The reverse locking mechanism is used for locking and unlocking the dislocation of the input end and the output end;

the optical path gating driving unit is used for driving the alignment of the input end and the output end in an unlocking state;

the active latch mechanism is used for locking and unlocking the position of the optical path gating driving unit, wherein the active latch mechanism comprises: the method comprises the steps of locking the position of the optical path gating driving unit by an insurance state and locking the position of the optical path gating driving unit by unlocking the insurance state to enable the optical path to be in a conducting state.

A recoverable MOEMS safety and arming device based on optical logic control, the timing control method comprises:

recognizing first environmental information, and releasing the locking of the optical path gating driving unit by the active locking mechanism to release the first locking;

identifying second environmental information, releasing the locking of the direct coupling type optical fiber light path by the reverse locking mechanism, and releasing the second locking;

then the optical path gating driving unit drives the alignment of the input end and the output end of the direct coupling type optical fiber optical path;

the direct coupling type optical fiber light path is conducted;

the active latch mechanism locks the position of the optical path gating driving unit and relieves the safety.

Compared with the prior art, the invention has the following remarkable advantages:

(1) The optical fiber and optical energy conversion technology is integrated into the electronic safety system, the laser is used as a carrier of ignition energy, the on-off of a light path is controlled through a mechanical structure, the logic control function is realized, the internal and external electromagnetic interference of the fuse can be effectively reduced, and the internal safety of the fuse safety system is improved;

(2) the invention has rich application scenes, can utilize various ballistic environment information and instruction information as a signal for relieving insurance; the invention has recoverable function, can be flexibly applied to unmanned aerial vehicle combat, patrol missiles, missiles and the like, and can be recovered to a safe state when a damaged target is lost or a damaged task is cancelled, thereby improving the intellectualization and dexterity of a fuze system;

(3) the invention can be used as an optical switch for transmitting laser energy or optical information, and has wide application space in the fields of medical treatment, communication, engineering and the like.

Drawings

FIG. 1 is a three-layer structure diagram of a MOEMS security and arming device three-dimensional model.

FIG. 2 is a schematic diagram of the structure of all electro-thermal drivers and input fibers in the MOEMS security and arming device.

Fig. 3 is a schematic structural diagram of the present invention, wherein fig. 3(a) is a safety state, and fig. 3(b) is an arming state.

Fig. 4 is a schematic diagram of a direct-coupled fiber optical circuit according to the present invention, in which fig. 4(a) is a safe state, and fig. 4(b) is an arming state.

Fig. 5 is a schematic diagram of the engagement of the latch in the active latch mechanism with the push rod in the optical path gate driving unit, where fig. 5(a) is a safe state and fig. 5(b) is an arming state.

Fig. 6(a) is a timing chart of voltages applied to the driver when the MOEMS security and arming device is switched from the security state to the arming state.

Fig. 6(b) is a timing chart of voltages applied to the driver when the MOEMS security and arming device is switched from the arming state to the security state.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, 2 and 3, the recoverable MOEMS security and arming device based on optical logic control according to the present embodiment includes a substrate 1-1, a support anchor point 1-2, a direct coupling optical fiber optical path 2, an optical path gating driving unit 3, an active latch mechanism 4, a reverse locking mechanism 5, and a limit anchor point 6; one side of the direct coupling type optical fiber light path 2 is connected with a reverse locking mechanism 5 which can limit the displacement of the input optical fiber 2-1 in a safe state; the other side of the direct coupling type optical fiber light path 2 is connected with a light path gating driving unit 3 for driving the incident optical fiber 2-1 to move; the other side of the optical path gating driving unit 3 is connected with an active latch mechanism 4 and used for locking the position of the optical path gating driving unit 3; the limiting anchor point 6 is used for limiting the displacement of the push rod 3-1 under the overload condition and avoiding the beam 3-2 from being damaged; the optical path gating driving unit 3, the active latch mechanism 4 and the reverse locking mechanism 5 are all connected with the substrate 1-1 through the support anchor points 1-2. The substrate 1 is a silicon-based substrate and has the size of 11mm multiplied by 7 mm.

Referring to fig. 4, the direct-coupling optical fiber circuit 2 includes an input optical fiber 2-1 and an output optical fiber 2-2, both of which have a core diameter of 105um and a cladding outer diameter of 125 um. The input optical fiber 2-1 and the output optical fiber 2-2 are embedded into the optical fiber groove 2-3, an optical fiber end face positioning block 2-4 is arranged in the optical fiber groove 2-3, and the optical fiber end face of the output optical fiber 2-2 is aligned with the optical fiber end face positioning block 2-4, so that the axial positioning of the optical fibers is realized; the side wall of the optical fiber groove 2-3 on one side of the input optical fiber 2-1 is of a wedge-shaped structure, and the optical fiber end face of the output optical fiber 2-2 can move in the wedge-shaped structure, so that the single-side positioning of the input optical fiber 2-1 during dislocation and alignment is realized. The substrate 1-1 is provided with laser scattering holes 2-5, and under the condition that the optical fibers are dislocated, if the laser source is opened by mistake, the input optical fibers (2-1) can inject laser energy into the laser scattering holes (2-5); and the inner side wall of the laser scattering holes (2-5) is arranged to be an uneven rough surface, so that laser is subjected to diffuse reflection, and the device is prevented from being damaged by the laser.

Referring to fig. 5, fig. 5(a) shows a relative position between the latch 4-1 of the active latch mechanism 4 and the push rod 3-1 of the optical path gate driving unit 3 in the safety state, and fig. 5(b) shows a relative position in the safety release state. The latch 4-1 in the active latch mechanism 4 is meshed with the push rod 3-1 in the optical path gating driving unit 3, and is used for locking the displacement of the optical path gating driving unit 3.

In the embodiment, the reverse locking mechanism 5 consists of a U-shaped electric heating micro-driver 5-1, a cantilever beam 5-2 and a limiting push rod 5-3, and can limit the displacement of the input optical fiber 2-1 in a safe state; under the safe state, the limiting push rod 5-3 supports the input optical fiber 2-1, so that the input optical fiber 2-1 and the output optical fiber 2-2 are staggered, and the limiting push rod 5-3 is connected with the U-shaped electric heating micro-driver 5-1 through the cantilever beam 5-2. The other side of the direct coupling type optical fiber light path 2 is connected with a light path gating driving unit 3, the light path gating driving unit 3 is composed of two U-shaped micro-electrothermal drivers 3-3, two beams 3-2 and a push rod 3-1, and the two U-shaped micro-electrothermal drivers 3-3 and the two beams 3-2 are symmetrically arranged on the left side and the right side of the push rod 3-1; the push rod 3-1 is connected with the U-shaped micro-electrothermal driver 3-3 through the beam 3-2; the push rod 3-1 is connected with the U-shaped micro-electro-thermal driver 3-3 through the beam 3-2, and the push rod 3-1 is used for driving the incident optical fiber 2-1 to move so as to realize dislocation and alignment of a light path; the active latch mechanism 4 consists of a U-shaped micro-electrothermal driver 4-2 and a latch 4-1, and the latch 4-1 is meshed with the push rod 3-1 to lock the position of the optical path gating drive unit 3; the limiting anchor point 6 is used for limiting the displacement of the push rod 3-1 under the overload condition and avoiding the beam 3-2 from being damaged; the optical path gating driving unit 3, the active latch mechanism 4 and the reverse locking mechanism 5 are all connected with the substrate 1-1 through the supporting anchor points 1-2.

Referring to fig. 3(a-b), fig. 4(a-b) and fig. 5(a-b), after the projectile is launched, the fuze control system identifies that first environmental information, such as recoil, reaches a preset insurance-removing threshold value, and sends a logic signal for removing the first insurance to the security device; after the MOEMS security device obtains a signal, the active latch mechanism 4 is electrified, the latch 4-1 is pulled to lock the push rod 3-1, namely, the lock on the optical path gating driving unit 3 is released, and the first safety is released; when the fuse control system identifies second environmental information such as centrifugal force and reaches a preset safety-removing threshold value, the reverse locking mechanism 5 is electrified, the limiting push rod 5-3 moves to release the locking of the input optical fiber 2-1, and the second safety is removed; then, the light path gating driving unit 3 is electrified, the push rod 3-1 pushes the input optical fiber 2-1 to move to a position aligned with the output optical fiber 2-2, and the light path is in a conducting state; the active latch mechanism 4 is powered off, the latch 4-1 is re-meshed with the push rod 3-1, the position of the optical path gating drive unit 3 is locked, and the safety is relieved. At the moment, even if the power supply of the security device is stopped, the optical path can be kept in a conducting state, the function of power-off keeping is achieved, and the power consumption of the system is reduced.

Referring to fig. 2, 4(a-b) and 5, when the fuze control system sends a logic signal for restoring the safety to the security device, the active latch mechanism 4 is powered on, and the lock on the optical path gating driving unit 3 is released again; the optical path gating driving unit 3 and the reverse locking mechanism 5 are powered off and restored to the initial positions, and the input optical fiber 2-1 moves to the staggered position under the combined action of the elastic restoring force of the input optical fiber and the elastic restoring force of the reverse locking mechanism 5; the active latch mechanism 4 is powered off, the latch 4-1 is meshed with the push rod 3-1, the position of the optical path gating drive unit 3 is locked, and the security device is restored to a safe state to realize a restorable function.

Referring to fig. 6(a-b), when the MOEMS security and arming device is to be disarmed, the correct timing signals must be obtained: the active latch mechanism 4 and the reverse locking mechanism 5 must be powered on first, and the optical path gating driving unit 3 can move; when the active latch mechanism 4 is not powered on, the position of the optical path gating driving unit 3 is locked, the input optical fiber 2-1 cannot be driven to move even if the optical path gating driving unit 3 is powered on, and the optical path cannot be conducted by mistake; when the reverse locking mechanism 5 is not electrified, the driving force output by the optical path gating driving unit 3 is not enough to drive the optical fiber to move, and the optical path is also not conducted by mistake.

Claims (5)

1. A recoverable MOEMS safety and safety relief device based on optical logic control is characterized by comprising a substrate, a direct coupling type optical fiber light path, a light path gating driving unit, an active latching mechanism and a reverse locking mechanism, wherein the direct coupling type optical fiber light path, the light path gating driving unit, the active latching mechanism and the reverse locking mechanism are connected with the substrate through supporting anchor points;

the direct coupling type optical fiber light path is provided with an input end and an output end; dislocation and alignment are arranged between the input end and the output end;

the reverse locking mechanism is used for locking and unlocking the input end and the output end in a staggered manner;

the optical path gating driving unit is used for driving the alignment of the input end and the output end in an unlocking state;

the active latch mechanism is used for locking and unlocking the position of the optical path gating driving unit, wherein the active latch mechanism comprises: the method comprises the steps that the position of the optical path gating driving unit is locked by a safety state, and the position of the optical path gating driving unit is locked by a light path conducting state due to the safety release;

the reverse locking mechanism is composed of a U-shaped electric heating micro-driver, a cantilever beam and a limiting push rod, the limiting push rod supports the input end of the direct coupling type optical fiber light path under a safe state, so that the input end and the output end are staggered, and the limiting push rod is connected with the U-shaped electric heating micro-driver through the cantilever beam;

The light path gating driving unit consists of two U-shaped micro-electrothermal drivers, two beams and a push rod, wherein the two U-shaped micro-electrothermal drivers and the two beams are symmetrically arranged on the left side and the right side of the push rod; the push rod is connected with the U-shaped micro-electro-thermal driver through a beam; the push rod is connected with the U-shaped micro-electro-thermal driver through a beam and is used for driving the input end of the direct coupling type optical fiber light path to move so as to realize dislocation and alignment of the light path;

the active latch mechanism is composed of a U-shaped micro-electrothermal driver and a latch, and the latch is meshed with the push rod to lock the position of the optical path gating driving unit.

2. The optical logic control based recoverable MOEMS security and arming device of claim 1, further comprising a limit anchor for limiting displacement of the optical path gate drive unit under overload conditions.

3. The optical logic control-based recoverable MOEMS security and arming device of claim 1, wherein the optical path gating driving unit, the active latching mechanism, and the reverse locking mechanism are all driven by U-type micro-electro-thermal drivers.

4. The optical logic control based recoverable MOEMS security and arming device of claim 1, wherein laser scattering holes are provided as the injection holes for the laser source when it is erroneously turned on with the input and output terminals misaligned.

5. The method for controlling the timing of a recoverable MOEMS security and arming device according to claim 1, further comprising:

recognizing first environment information, and releasing the locking of the optical path gating driving unit by the active latching mechanism to release the first locking;

identifying second environment information, releasing the locking of the direct coupling type optical fiber light path by the reverse locking mechanism, and releasing the second locking;

then the optical path gating driving unit drives the alignment of the input end and the output end of the direct coupling type optical fiber optical path;

the direct coupling type optical fiber light path is conducted;

the active latch mechanism locks the position of the optical path gating driving unit and relieves the safety.

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