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

Abstract

The invention discloses a recoverable MOEMS safety and release safety device based on optical logic control. , Limit anchor point. The direct-coupled fiber optical path includes an input fiber and an output fiber that transmit laser energy. The optical path gating driving unit is composed of two U-shaped electrothermal drivers, which are used to drive the incident optical fiber to move. Both the reverse locking mechanism and the active locking mechanism are composed of U-shaped electrothermal drivers, which can be controlled by two kinds of environmental information respectively. The reverse locking mechanism locks the optical fiber, and the active locking mechanism locks the optical path gating drive unit. , to achieve double insurance. The invention adopts laser as the carrier of ignition energy transmission, controls the on-off logic of the optical path through the mechanical structure, and has the functions of recoverability and power-off retention, and improves the anti-interference ability and dexterity level of the fuze system.

Description

A recoverable MOEMS safety and release device based on optical logic control

technical field

The invention belongs to the technical field of fuse safety systems, in particular to a recoverable MOEMS safety and release safety device based on optical logic control.

Background technique

With the advancement of weapon and ammunition systems and electronic technology, fuze safety and insurance systems are also developing towards miniaturization and intelligence. As a result, some circuits and electronic components that can perform logic functions are widely used in the fuze security system, which makes the all-electronic security system vulnerable to electromagnetic interference, which causes the fuze system to malfunction and reduces the security of the in-line explosive sequence ammunition weapon system. and reliability. Therefore, by integrating optical fiber and optical energy conversion technology into the electronic security system, using the laser as the carrier of ignition energy transmission and the optical fiber as the transmission medium of the laser, the fuze can effectively avoid electromagnetic interference, thereby improving the inherent security of the electronic security system.

Micro-Opto-Electro-Mechanical Systems (MOEMS) is an emerging technology that integrates micro-scale mechanics, optics, and microcircuits. The optical switch based on MOEMS technology can be used in the fuze security system to control the laser by controlling the on-off of the optical fiber path. At present, the optical fiber path of MOEMS optical switch includes the following three forms: reflective fiber optical path, blocking fiber optical path, and direct coupling fiber optical path. Compared with the reflective and blocking fiber paths, the direct-coupled fiber paths have higher energy transmission efficiency.

The micro-actuator in the MOEMS optical switch is the key to generating mechanical motion and realizing the on-off control of the optical path. The optical switch based on the direct-coupled optical fiber optical path needs to drive the optical fiber to move, which requires higher performance of the driver. At present, the commonly used micro-drive methods include: electrostatic drive, electromagnetic drive, electrothermal drive, piezoelectric drive, shape memory alloy and so on. Compared with other driving methods, the electrothermal driving has a good performance in the driving displacement and driving force at the micro scale.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a recoverable MOEMS security and defuse device based on optical logic control, so as to improve the anti-interference, miniaturization, intelligence and dexterity of the fuze security system.

The technical solution that realizes the object of the present invention is:

A recoverable MOEMS safety and release safety device based on optical logic control, comprising a base, a direct-coupled optical fiber optical path connected to the base through a support anchor point, an optical path gating drive unit, an active latching mechanism, and a reverse locking mechanism ;

The direct-coupling optical fiber path is provided with an input end and an output end; a dislocation and an alignment position 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 drive unit is used to drive the alignment of the input end and the output end in an unlocked state;

The active latching mechanism is used for locking and unlocking the position of the optical path gating drive unit, wherein locking: including the insurance state to lock the position of the optical path gating driving unit, and releasing the insurance to make the optical path conduction state to the optical path gating. The position of the drive unit is locked.

A recoverable MOEMS safety and release safety device based on optical logic control, and a method for its sequence control, comprising:

Recognizing the first type of environmental information, the active latch mechanism releases the lock on the optical path gating drive unit, and releases the first lock;

Identifying the second environmental information, the reverse locking mechanism releases the lock on the direct-coupled optical fiber path, and releases the second lock;

Then the optical path gating drive unit drives the alignment of the input end and the output end of the direct coupled optical fiber optical path;

Directly coupled optical fiber optical path is turned on;

The active latch mechanism locks the position of the optical path gating drive unit and releases the insurance.

Compared with the prior art, the present invention has the following significant advantages:

(1) The present invention integrates optical fiber and optical energy conversion technology into the electronic safety system, adopts laser as the carrier of ignition energy, controls the on-off of the optical path through the mechanical structure, has the function of logic control, and can effectively reduce the electromagnetic interference inside and outside the fuze, thereby Improve the inherent safety of the fuze safety system;

(2) The present invention has rich application scenarios, and can use a variety of ballistic environment information and command information as a signal for releasing insurance; the present invention has a recoverable function, and can be flexibly applied to UAV operations, cruise missiles, missiles, etc. When the target is lost or the damage mission is cancelled, it can be restored to a safe state, which improves the intelligence and dexterity of the fuze system;

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

Description of drawings

Fig. 1 is the three-layer structure diagram of the three-dimensional model of the MOEMS safety and release device.

FIG. 2 is a schematic structural diagram of all electrothermal drivers and input optical fibers in the MOEMS safety and release device.

Fig. 3 is a schematic diagram of the structure of the present invention, wherein Fig. 3(a) is a safe state, and Fig. 3(b) is a disarmed state.

Fig. 4 is a schematic diagram of a direct-coupled optical fiber optical path in the present invention, wherein Fig. 4(a) is a safe state, and Fig. 4(b) is a release state.

Fig. 5 is a schematic diagram of the engagement between the teeth in the active latching mechanism and the push rod in the optical path gating drive unit, wherein Fig. 5(a) is a safe state, and Fig. 5(b) is a release state.

Figure 6(a) is a timing diagram of the voltage applied to the driver when the MOEMS safety and disassociation device switches from the safe state to the disarmed state.

Figure 6(b) is a timing diagram of the voltage applied to the driver when the MOEMS safety and release device switches from the release state to the safety state.

Detailed ways

The present invention will be further introduced below with reference to the accompanying drawings and specific embodiments.

Referring to FIG. 1, FIG. 2 and FIG. 3, a recoverable MOEMS safety and release device based on optical logic control in this embodiment includes a substrate 1-1, a support anchor point 1-2, and a directly coupled optical fiber optical path 2 , optical path gating drive unit 3, active latching mechanism 4, reverse locking mechanism 5, limit anchor point 6; one side of the directly coupled optical fiber optical path 2 is connected with a reverse locking mechanism 5, which can be in a safe state The displacement of the input optical fiber 2-1 is limited at the same time; the other side of the direct-coupled optical fiber optical path 2 is connected with an optical path gating drive unit 3, which is used to drive the incident optical fiber 2-1 to move; the other side of the optical path gating drive unit 3 is connected to the active lock The storage mechanism 4 is connected to lock the position of the optical path gating drive unit 3; the limit anchor point 6 is used to limit the displacement of the push rod 3-1 under overload conditions to avoid the damage of the beam 3-2; The drive unit 3, the active latching mechanism 4, and the reverse locking mechanism 5 are all connected to the base 1-1 through the support anchor point 1-2. The substrate 1 is a silicon-based substrate with a size of 11 mm×7 mm.

Referring to FIG. 4 , the directly coupled optical fiber path 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 an outer diameter of the cladding of 125um. The input optical fiber 2-1 and the output optical fiber 2-2 are embedded in the optical fiber slot 2-3. The optical fiber slot 2-3 is provided with an optical fiber end face positioning block 2-4. The optical fiber end face of the output optical fiber 2-2 and the optical fiber end face positioning block 2 -4 is aligned to realize the axial positioning of the fiber; the side wall of the fiber slot 2-3 on the side of the input fiber 2-1 is a wedge-shaped structure, and the fiber end face of the output fiber 2-2 can move in the wedge-shaped structure to realize the input fiber 2- 1 Unilateral positioning during misalignment and alignment. A laser scattering hole 2-5 is provided on the substrate 1-1. In the case of optical fiber misalignment, if the laser source is turned on by mistake, the input fiber (2-1) can inject laser energy into the laser scattering hole (2-5); The inner side walls of the scattering holes (2-5) are set as uneven rough surfaces, so that the laser light is diffusely reflected and the laser light is prevented from causing damage to the device.

Referring to FIG. 5 , FIG. 5( a ) is the relative position of the latching teeth 4 - 1 of the active latch mechanism 4 and the push rod 3 - 1 of the optical path gating drive unit 3 in a safe state, and FIG. 5( b ) is the safety release state relative position of time. The latching teeth 4-1 in the active latch mechanism 4 mesh with the push rod 3-1 in the optical path gating driving unit 3 to lock the displacement of the optical path gating driving unit 3 .

In this embodiment, the reverse locking mechanism 5 is composed of a U-shaped electrothermal micro-actuator 5-1, a cantilever beam 5-2, and a limit push rod 5-3, which can limit the input fiber 2-1 in a safe state. Displacement; in a safe state, the limit push rod 5-3 supports the input fiber 2-1, so that the input fiber 2-1 and the output fiber 2-2 are dislocated, and the limit push rod 5-3 passes through the cantilever beam 5-2 and the U-shaped The electrothermal microdrive 5-1 is connected. The other side of the direct-coupled optical fiber optical path 2 is connected with an optical path gating drive unit 3, and the optical path gating drive unit 3 is composed of two U-shaped micro-electrothermal drivers 3-3, two beams 3-2 and a push rod 3-1 , two U-shaped micro-electric heating drivers 3-3 and two beams 3-2 are symmetrically arranged on the left and right sides of the push rod 3-1; the push rod 3-1 is connected to the U-shaped micro-electric heating driver 3-3 through the beam 3-2 ; The push rod 3-1 is connected with the U-shaped micro-electrothermal driver 3-3 through the beam 3-2, and the push rod 3-1 is used to drive the movement of the incident optical fiber 2-1 to realize the misalignment and alignment of the optical path; the active latch mechanism 4 It is composed of a U-shaped micro-electric heating driver 4-2 and a tooth 4-1. The tooth 4-1 and the push rod 3-1 mesh with each other, which can lock the position of the optical path gating drive unit 3; the limit anchor point 6 is used for In order to limit the displacement of the push rod 3-1 under overload conditions, to avoid the damage of the beam 3-2; the above-mentioned optical path gating drive unit 3, active latching mechanism 4, and reverse locking mechanism 5 all pass through the support anchor point 1-2 Connect to base 1-1.

Referring to Figures 3(a-b), 4(a-b) and 5(a-b), after the projectile is launched, the fuze control system recognizes the first environmental information, such as recoil, and reaches the preset disarming threshold, and sends the The security device sends out a logic signal to release the first insurance; after the MOEMS security device obtains the signal, the active latching mechanism 4 is powered on, and the locking of the push rod 3-1 by the locking teeth 4-1 is pulled, that is, the optical path gating is released. The locking of the drive unit 3 releases the first insurance; the fuze control system recognizes the second type of environmental information, such as centrifugal force, and when the preset release threshold is reached, the reverse locking mechanism 5 is powered on, and the limit push rod 5-3 Move, release the lock on the input fiber 2-1, and release the second insurance; then, the optical path gating drive unit 3 is powered on, and the push rod 3-1 pushes the input fiber 2-1 to move to the position aligned with the output fiber 2-2. position, the optical path is in a conducting state; the active latching mechanism 4 is powered off, the tooth 4-1 re-engages with the push rod 3-1, locks the position of the optical path gating drive unit 3, and releases the insurance. At this time, even if the power supply to the security device is stopped, the optical path can be kept in a conducting state, and it has the function of keeping power off and reduces the power consumption of the system.

Referring to Fig. 2, Fig. 4 (a-b) and Fig. 5, when the fuze control system sends out the logic signal of restoring insurance to this security device, the active latch mechanism 4 is energized to release the locking of the optical path gating drive unit 3 again; When the drive unit 3 and the reverse locking mechanism 5 are powered off and restored to the initial position, the input optical fiber 2-1 moves to the staggered position under the combined action of its own elastic restoring force and the elastic restoring force of the reverse locking mechanism 5; The mechanism 4 is powered off, the tooth 4-1 is engaged 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, realizing the recoverable function.

Referring to Fig. 6 (a-b), when described MOEMS safety and release insurance device release insurance, must arrive at correct timing signal: must first give active latch mechanism 4 and reverse locking mechanism 5 energization, optical path gating drive unit 3 When the active latching mechanism 4 is not powered on, the position of the optical path gating drive unit 3 will be locked. Even if the optical path gating drive unit 3 is powered on, it cannot drive the input fiber 2-1 to move, and the optical path will not be misdirected. ; When the reverse locking mechanism 5 is not energized, the driving force output by the optical path gating drive unit 3 is not enough to drive the optical fiber to move, and the optical path will not be misdirected.

Claims (5)

1. a recoverable MOEMS safety and release safety device based on optical logic control, it is characterized in that, comprise substrate, the direct coupling optical fiber optical path, optical path gating drive unit, active latching mechanism that is connected with substrate by supporting anchor point , Reverse locking mechanism; The direct-coupling optical fiber path is provided with an input end and an output end; a dislocation and an alignment position 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 drive unit is used to drive the alignment of the input end and the output end in an unlocked state; The active latching mechanism is used for locking and unlocking the position of the optical path gating drive unit, wherein locking: including the insurance state to lock the position of the optical path gating driving unit, and releasing the insurance to make the optical path conduction state to the optical path gating. The position of the drive unit is locked; The reverse locking mechanism is composed of a U-shaped electrothermal micro-actuator, a cantilever beam, and a limit push rod. In a safe state, the limit push rod supports the input end of the direct-coupling optical fiber optical path, so that the input end and the output end are misaligned, and the limit is limited. The push rod is connected with the U-shaped electrothermal micro-actuator through the cantilever beam; The optical path gating drive unit is composed of two U-shaped micro-electric heating drivers, two beams and a push rod. The two U-shaped micro-electric heating drivers and the two beams are symmetrically arranged on the left and right sides of the push rod; the push rod is connected to the push rod through the beams. The U-shaped micro-electrothermal driver is connected; the push rod is connected to the U-shaped micro-electrothermal driver through the beam, and the push rod is used to drive the input end of the direct-coupled optical fiber optical path to move, so as to realize the misalignment and alignment of the optical path; The active latching mechanism is composed of a U-shaped micro-electric heating driver and a locking tooth, and the locking tooth and the push rod are engaged with each other to lock the position of the optical path gating drive unit. 2 . The recoverable MOEMS safety and release safety device based on optical logic control according to claim 1 , further comprising a limit anchor point for limiting the displacement of the optical path gating drive unit under overload conditions. 3 . 3. the recoverable MOEMS safety and release safety device based on optical logic control according to claim 1, is characterized in that, described optical path gating drive unit, active latching mechanism, reverse locking mechanism all adopt U-shaped Micro-electric thermal drive drive. 4. The recoverable MOEMS safety and release safety device based on optical logic control according to claim 1, is characterized in that, is provided with laser scattering hole, under the dislocation state of the input end and the output end, as the laser source when the laser source is turned on by mistake. injection hole. 5. a kind of sequence control method based on the recoverable MOEMS safety of optical logic control and release safety device according to claim 1, is characterized in that, comprising: Recognizing the first type of environmental information, the active latch mechanism releases the lock on the optical path gating drive unit, and releases the first lock; Identifying the second environmental information, the reverse locking mechanism releases the lock on the direct-coupled optical fiber path, and releases the second lock; Then the optical path gating drive unit drives the alignment of the input end and the output end of the direct coupled optical fiber optical path; Directly coupled optical fiber optical path is turned on; The active latch mechanism locks the position of the optical path gating drive unit and releases the insurance.

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