CN110571069B - Micro-mechanical collision switch control device - Google Patents

Micro-mechanical collision switch control device Download PDF

Info

Publication number
CN110571069B
CN110571069B CN201910766388.9A CN201910766388A CN110571069B CN 110571069 B CN110571069 B CN 110571069B CN 201910766388 A CN201910766388 A CN 201910766388A CN 110571069 B CN110571069 B CN 110571069B
Authority
CN
China
Prior art keywords
switch
mems
collision
control circuit
ignition control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910766388.9A
Other languages
Chinese (zh)
Other versions
CN110571069A (en
Inventor
陈荷娟
季兆伟
童辉
刘向磊
徐澍民
李智鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Science and Technology
Original Assignee
Nanjing University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing University of Science and Technology filed Critical Nanjing University of Science and Technology
Priority to CN201910766388.9A priority Critical patent/CN110571069B/en
Publication of CN110571069A publication Critical patent/CN110571069A/en
Application granted granted Critical
Publication of CN110571069B publication Critical patent/CN110571069B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/12—Primers; Detonators electric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0036—Switches making use of microelectromechanical systems [MEMS]

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Abstract

The invention discloses a micro-mechanical collision switch control device, belongs to the technical field of fuze ignition control, and particularly relates to a micro-mechanical collision switch control device which utilizes a flexible inclined support moving electrode and an ignition control circuit. The device comprises a structure consisting of an MEMS collision switch and an ignition control circuit; the method is characterized in that: the MEMS collision switch is an independent structure, comprises an MEMS collision switch and an MEMS floor switch and is positioned in a cavity in the center of the head mechanism; the ignition control circuit and other mechanisms are positioned on the bottom mechanism; the main pill charge is positioned between the head mechanism and the bottom mechanism; the fuse power supply and the explosion sequence are positioned at the bottom mechanism of the fuse, and the MEMS collision switch and the explosion sequence are connected in series with the ignition control circuit by leads. On the basis of inheriting the main function and structural elements of an active fuse, the invention improves and designs the flexible inclined support micro-mechanical collision switch control device, has the capability of sensing multidirectional collision force, and can effectively improve the reliability of the ignition effect of wiping the ground at a small falling angle.

Description

Micro-mechanical collision switch control device
Technical Field
The invention belongs to the technical field of fuze ignition control, and particularly relates to a micro-mechanical collision switch control device utilizing a micro-mechanical collision switch and an ignition control circuit of a flexible inclined support.
Background
The detonator mainly comprises three major parts, namely a safety system, an ignition control system and an explosion sequence, and is a control system which is used for a projectile or a warhead and is used for detonating or igniting ammunition under a preset condition by utilizing target information and environmental information. The fuse of the armor-breaking bomb is used for the armor-breaking bomb. The armor-breaking bomb is a shell formed by energy-gathering effect and a metal jet flow penetrating an armored target, is an effective weapon for tanks, armored vehicles, civil engineering and the like, can be matched with cannons, grenade cannons, rocket barrels, recoilless cannons and the like, has small firing angle in direct projection and effective range, cannot hit the armored target hundred percent, and often has ground rubbing phenomenon when falling down because the projectile falls on the ground near the armored target. Fuzes are a control system for use with armor-piercing projectiles that utilizes target information and environmental information to initiate or ignite a charge in the warhead of the ammunition under predetermined conditions. In order to ensure that the armor-breaking bomb can reliably explode when hitting an armored target and falling to the ground and kill people who enter along with the armor, the fuze is required to have extremely high triggering sensitivity.
The armor-breaking bomb fuze is subjected to three development stages of mechanical fuze, piezoelectric fuze and electromechanical fuze. Early mechanical fuses and piezoelectric fuses, such as the piezoelectric fuses M509 and M412 in the united states and the piezoelectric fuses electricity-1 and electricity-2 in china, have a function of non-friction blasting, so that the weapon efficiency cannot be fully exerted, and certain difficulties are brought to army training. With the further improvement of armor protection technology, the successive emergence of composite armor and third-generation antitank weapons, a power-storage electromechanical fuse utilizing electromechanical technology is developed in the nineties of the last century to replace a piezoelectric fuse and increase the ground-wiping function, such as the U.S. M764 electromechanical fuse and the DRD series power-storage electromechanical fuse in China.
The ignition control system comprises various control switches and ignition control circuits. Among them, the switches for controlling the normal firing of the impact target are called impact switches, which are classified according to the action principle, and there are two kinds of switches, namely, an impact switch and a floor switch. At present, most of rigid support collision switches directly acting by ground reaction force have various structures such as a needle-prick fire cap type inertia trigger, a power supply control type with a collision switch, a power supply hood control structural formula, a hood-pin-shaped pole structure collision switch type, a spring-mass block type and the like. The ignition control circuit consists of an energy storage capacitor, an electric detonator with a short-circuit switch, a touch switch and the like. The charging and discharging of the energy storage capacitor are controlled by a fuse power supply, a short-circuit switch, a touch switch and a ground switch, the fuse power supply charges the energy storage capacitor in a bore, the short-circuit switch is closed at ordinary times and is opened on a flight trajectory of dozens of meters out of the bore, the touch switch is closed when a target is touched or the ground switch is closed when the target is touched, the energy storage capacitor can discharge at the moment, and then an electric detonator explodes to sequentially detonate the shots.
The collision switches of the American M764 fuze and DRD series electricity storage type electromechanical fuze floor-cleaning blasting devices are all spring-mass type switches, are directly closed under the reaction force of a ground medium after falling to the ground and are arranged on the fuze shaft (the fuze shaft is superposed with the bullet shaft) line of the head mechanism. The ground rubbing blasting device has poor consistency of all directions and poor ignition performance in other directions because the ground rubbing blasting can only be ignited in a small angle deviating from the fuse shaft, thereby reducing the ground rubbing blasting performance of the armor shell fuse with a small falling angle. The shot has great randomness of the landing impact gesture, and the rigid support impact switch arranged at the head of the fuse is difficult to sense the ground medium reaction force in any direction. The switch can not make the fuse structure completely sealed at the head, so that the problem of sealing the overall design of the fuse is caused.
Micro-electro-mechanical-System (abbreviated as MEMS) has the characteristics of small volume, high reliability, low cost, and convenient integration. Based on these characteristics, with the development trend of fuse volume miniaturization, function modularization and structure integration, the MEMS switch designed by using the MEMS manufacturing technology is drawing much attention in the application of fuses. At present, all the MEMS switches used in the fuze are MEMS inertial switches, which are turned on or off by using the vibration principle of a spring-mass system, and sense the inertial force (also called recoil) generated by the acceleration, and the direction of the mass moving by the inertial force is opposite to the direction of the acceleration. In recent years, with the development requirements of miniaturization and modularization of structures, a plurality of MEMS inertial switches manufactured based on MEMS technology appear in the technical field of fuzes, the earliest appearing MEMS inertial switch is a single-degree-of-freedom MEMS inertial switch, is sensitive to an inertial force in one direction, and the later appearing MEMS universal inertial switch. For example, the invention of "MEMS universal inertial switch capable of identifying load bearing interval" (patent No. CN107359057A, university of Nanjing technology and technology, etc.), the movable electrode is an annular mass block supported by a plurality of radial springs, and a plurality of fixed electrodes are designed in the horizontal direction and axial direction of the central axis, so as to form a plurality of parallel inertial switches and sense radial and axial acceleration loads. The invention patent US 8237521B 1 also designs a multidirectional sensitive MEMS acceleration switch arranged on the axis, wherein a ring-shaped mass block with the inner side supported by a coil spring is used as a movable electrode, 8 mass blocks are uniformly arranged in the circumferential direction, an axial cover plate is used as a fixed electrode and is closed, and the outer side (outer side circle) of the mass block is closed with the fixed electrode, so that 9 inertial switches connected in parallel can be formed, and the multidirectional sensitive acceleration action in the radial direction and the axial direction is realized. The MEMS inertial switches of both examples use a flexible supporting moving electrode, a rigid fixed electrode. Patent CN107359057A designs a pillar spring support moving pillar on the extension line of the radial line outside the circular ring shaped mass block, and patent US8237521 flexible support moving electrode designs an archimedes spiral coil spring on the inner side of the circular ring shaped mass block for support.
After conclusion, for a collision switch of a fuse ignition control system of a armor shell breaking bomb, the traditional mechanical and electromechanical collision switches can only sense the forward impact force in the advancing direction, the ground wiping sensitivity and the consistency in all directions are poor, and a rigid moving electrode arranged at the head is adopted, so that the sealing property is poor, the closing process is long, and the power connection stability is poor; the MEMS universal inertial switch has small closed force threshold peak value, longer action time and small mechanical characteristic difference between flying and landing environments, and is easy to cause early-explosion accidents.
Disclosure of Invention
The invention aims to overcome the defects in the ignition control system and provide a micro-mechanical collision switch control device which can enhance the sealing property of an antitank armor-breaking bomb fuze system and improve the ignition property, thereby solving the problem of low ignition rate.
A micro-mechanical collision switch control device comprises a structure formed by an MEMS collision switch 1 and an ignition control circuit 2; the MEMS collision switch 1 is an independent structure, comprises an MEMS collision switch S3 and an MEMS floor switch S4, and is positioned in a cavity in the center of the head mechanism 6; the ignition control circuit 2 and other mechanisms are positioned on the bottom mechanism 3; the main pill charge 4 is positioned between the head mechanism 6 and the bottom mechanism 3; the fuze power supply 21 and the explosion sequence 5 are positioned on the bottom mechanism 3, and the MEMS collision switch 1 and the explosion sequence 5 are connected in series with the ignition control circuit 2 by leads.
The ignition control circuit 2 controlled by the MEMS collision switch 1 consists of a fuse power supply 21, a control switch D1, a charging switch D2, an electronic switch S1, a short-circuit switch S2, an MEMS collision switch S3, an MEMS ground switch S4, a capacitor C and an electric detonator 22 in an explosion sequence 7; the MEMS collision switch S3 and the MEMS floor switch S4 are connected in parallel to form an MEMS collision switch 1, and the MEMS collision switch 1 is positioned in a cavity in the center of the head mechanism 6; other components of the ignition control circuit 2 are positioned in the bottom mechanism 3, an electric detonator 22 in the circuit is a first-level initiating explosive of an explosion sequence 7, and when current flowing through the electric detonator reaches an initiation threshold value, explosion can occur; the main pill charge 4 is arranged between the head mechanism 6 and the bottom mechanism 3, and a groove or a hole (not shown in figure 1) of a lead is reserved on the shell (also called a fuse body); the head mechanism 6 is sealed at the top end.
The ignition control circuit 2 is a special fuze ignition control circuit connected with an electric detonator 22 in an explosion sequence 5 in series, wherein a fuze power supply 21, a capacitor C, a control switch D1 and a charging switch D2 form a power supply loop; one end of the control switch D1 is connected with the anode of the fuse power supply 1, and the other end is connected with the charging switch D2; the positive pole of the capacitor C is connected with the charging switch D2, and the negative pole is connected with the ground end (generally connected with the fuse shell); the short-circuit switch S2 is a safety switch of the electric detonator 22 of the explosion sequence 5, is located in the bottom mechanism 3, and the signal for controlling the closing of the short-circuit switch comes from a safety release signal VA (corresponding to the safe distance position after the projectile exits from the muzzle) in the fuze system; the electronic switch S1 is a delay switch, the control signal of the closing action of the electronic switch is from a remote arming signal VB in the fuze system, and VB is a delay pulse signal (the delay is later than VA, and the delay is larger than the safe distance position after the projectile exits from the muzzle); one end of S1 is connected with the negative pole of the capacitor C, and the other end is connected with the parallel end of the S2 and the electric detonator (3).
The closing sequence of the control switch in the ignition control circuit is as follows: d1, D2, S2, S1, S3 or S4.
The MEMS collision switch 1 is formed by connecting an MEMS collision switch S3 and an MEMS floor switch S4 in parallel, and is a normally open type micro mechanical switch module manufactured based on an MEMS process; the S3 and S4 have the same structure and are both thin-layer structures, and comprise a square insulating substrate 7, a flexible inclined supporting movable electrode 8 and a fixed electrode 9. The flexible diagonally-supported moving electrode 8 and the fixed electrode 9 are located in the center of the square-shaped insulating substrate 8, wherein the fixed electrode 10 is located at the center position inside the flexible diagonally-supported moving electrode 9. But the action threshold is different, the closing threshold of the MEMS touch switch S3 is higher than that of the MEMS floor switch S4, and the MEMS touch switch depends on the target reaction force K when the armor is touchedMClosed, the latter being dependent onGround medium reaction force K when falling to the groundLAnd (5) closing.
The action principle of the MEMS collision switch related to the ignition control circuit is different from that of an MEMS inertia switch, and the MEMS collision switch is a switch which works by utilizing collision force generated in the process of colliding with a target or falling to the ground. According to impulse theorem, the acting force of one object when the other object is collided is the collision force, which belongs to the instantaneous force, the collision force value is very large, and the acting time is very short. Therefore, the MEMS collision switch is designed in the fuse structure, the size is small, and the sealing of the fuse structure is facilitated.
The flexible inclined support moving electrode 8 comprises a block-shaped supporting seat 81, a cylindrical spring 82, a limiting pin 83, a mass block 84 and a long connecting strip 85, and the materials are all conductive metals. The mass block 84 is a disc with a plurality of balance holes, 6 semicircular notches 841, 6 bulges 842 and 6 limit pins 83 are designed on the excircle at intervals, and are fixed on the square insulating substrate 7 and respectively aligned with the semicircular notches 841 on the excircle of the mass block 84, and the notches 841 play a role in limiting large displacement movement of the mass block 84; the total number of the 6 columnar springs 82 is 6, and two ends of each columnar spring 82 are respectively connected with the protrusions 842 on the mass block 84 and the block-shaped supporting seat 81, so that the mass block 84 is suspended above the square insulating substrate 7; the block-shaped supporting seats 81 are fixed on the square insulating substrate 7, one block-shaped supporting seat 81 is connected with a long connecting strip 85, and the long connecting strip 85 is connected with the d end of the MEMS touch switch S3 or the MEMS floor switch S4 of the ignition control circuit 2.
The fixed electrode 9 comprises a support base 91, a helical coil spring 92, a tooth-shaped conductive ring 93 and a short connecting strip 94, which are made of conductive metal. Wherein, the supporting base 91 is fixed on the square insulating substrate 7, is positioned at the center of the mass block 84, and is connected with the tooth-shaped conductive ring 93 through the spiral coil spring 92. The short connecting bar 94 is connected to the e terminal of the MEMS engaging switch S3 or the MEMS floor switch S4 of the ignition control circuit 2.
The central shaft of the MEMS collision switch 1 is superposed with the elastic shaft, the cylindrical spring 82 is not extended on the radial line but is obliquely arranged outside the mass block 84, and the included angle between the central shaft of the cylindrical spring 82 and the radial line is an acute angleα. The arc radius of 6 semicircular notches 841 is designed to be 85 micrometers, and the limiting pin 93 is designed to be halfThe diameter is 60 microns, and the limiting gap is larger than the radial contact gap, so that the mass block 84 can be limited from generating excessive displacement and rotation when being subjected to excessive impact. The outer circle of the tooth-shaped conducting ring 93 is provided with 16 teeth, the thickness is 15 microns, the diameter of the inner circle is 380 microns, and the annular gap between the tooth-shaped conducting ring and the mass block 84 is 80 microns. The helical coil spring 92 had a line width of 10 microns and a thickness of 30 microns. Target reaction force K when Mass 84 of MEMS slam switch S3 or MEMS floor switch S4 is armoredMOr ground medium reaction force KLActive, the MEMS slam switch S3 or MEMS floor switch S4 is closed.
Compared with the prior art, the invention has the remarkable advantages that:
on the basis of inheriting the main function and structural elements of an active fuse, the invention improves and designs the flexible inclined support micro-mechanical collision switch control device, has the capability of sensing multidirectional collision force, and can effectively improve the reliability of the ignition effect of wiping the ground at a small falling angle.
Description of the drawings:
FIG. 1 is a schematic diagram of a fuse according to the present invention;
FIG. 2 is a schematic diagram of an ignition control circuit controlled by the MEMS impact switch of the present invention;
FIG. 3 is a schematic view of a flexible, diagonally supported moving electrode configuration of the MEMS impact switch of the present invention;
fig. 4 is a schematic diagram of a fixed electrode structure of the MEMS impact switch of the present invention.
In the figure:
1. a MEMS collision switch; s3, MEMS touch switch; s4, a MEMS floor switch;
2. an ignition control circuit; 21. a fuse power supply; 22. an electric detonator; d1, a control switch; d2, a charging switch; C. a capacitor; s1, an electronic switch; s2, a short-circuit switch;
3. a bottom mechanism;
4. the main charge of the projectile;
5. an explosion sequence;
6. a head mechanism;
7. a square insulating substrate;
8. a flexible angled support moving electrode; 81. a block-shaped support seat; 82. a cylindrical spring; 83. a spacing pin; 84. a mass block; 841. a semicircular notch; 842. a protrusion; 85. a long connecting strip;
9. a fixed electrode; 91. a supporting seat; 92. a helical coil spring; 93. a toothed conducting ring; 94. a short connecting strip;
x, others;
f1, generating recoil by a power supply; f2, maximum recoil; f3, recoil at the muzzle; VA, release insurance signal; VB and a delayed pulse signal; kMThe reaction force of the target when the armor is touched; kLAnd the ground medium reaction force when the ground falls.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
With reference to fig. 1 to 4, the micromechanical collision switch control device according to the present invention includes a structure formed by an MEMS collision switch 1 and an ignition control circuit 2; the MEMS collision switch 1 is an independent structure, comprises an MEMS collision switch S3 and an MEMS floor switch S4, and is positioned in a cavity in the center of the head mechanism 6; the ignition control circuit 2 and other mechanisms are positioned on the bottom mechanism 3; the main pill charge 4 is positioned between the head mechanism 6 and the bottom mechanism 3; the detonator power supply 21, the detonation train 5 is located at the detonator bottom mechanism 3. The MEMS collision switch 1 and the explosion sequence 5 are connected in series with the ignition control circuit 2 by leads.
The ignition control circuit 2 controlled by the MEMS collision switch 1 consists of a fuse power supply 21, a control switch D1, a charging switch D2, an electronic switch S1, a short-circuit switch S2, an MEMS collision switch S3, an MEMS ground switch S4, a capacitor C and an electric detonator 22 in an explosion sequence 5. The MEMS collision switch S3 and the MEMS floor switch S4 are connected in parallel to form an MEMS collision switch 1, and the MEMS collision switch 1 is positioned in a cavity in the center of the head mechanism 6; other components of the ignition control circuit 1 are positioned in the bottom mechanism 3, an electric detonator 22 of an explosion sequence 5 in the circuit is a first-level initiating explosive of the explosion sequence 5, and when current flowing through the electric detonator reaches an initiation threshold value, the electric detonator can explode; the main pill charge 4 is arranged between the head mechanism 6 and the bottom mechanism 3, and a groove or a hole (not shown in figure 1) of a lead is reserved on the shell (also called a fuse body); the head mechanism 6 is sealed at the top end.
The ignition control circuit 2 is a special ignition control circuit for the fuze of the electric detonator 22 comprising an explosion sequence 5, wherein a fuze power supply 21, a capacitor C, a control switch D1 and a charging switch D2 form a power supply loop. One end of the control switch D1 is connected with the anode of the signal power supply 21, and the other end is connected with the charging switch D2; the positive pole of the capacitor C is connected with the charging switch D2, and the negative pole is connected with the ground end (generally connected with the fuse shell); the short-circuit switch S2 is a safety switch of the electric detonator 22 of the explosion sequence 5, is located in the bottom mechanism 3, and the signal for controlling the closing of the short-circuit switch comes from a safety release signal VA (corresponding to the safe distance position after the projectile exits from the muzzle) in the fuze system; the electronic switch S1 is a delay switch, the control signal of the closing action of the electronic switch is from a remote arming signal VB in the fuze system, and VB is a delay pulse signal (the delay is later than VA, and the delay is larger than the safe distance position after the projectile exits from the muzzle); one end of the electronic switch S1 is connected with the negative electrode of the capacitor C, and the other end is connected with the parallel end of the short-circuit switch S2 and the electric detonator 22.
The closing sequence of the control switch in the ignition control circuit is as follows: d1, D2, S2, S1, S3 or S4.
The MEMS collision switch 1 is formed by connecting an MEMS collision switch S3 and an MEMS floor switch S4 in parallel, and is a normally open type micro mechanical switch module manufactured based on an MEMS process. The MEMS touch switch S3 and the MEMS floor switch S4 have the same structure and are both of thin-layer structures, and each thin-layer structure comprises a square insulating substrate 7, a flexible inclined support moving electrode 8 and a fixed electrode 9. The flexible and angular supported moving electrode 8 and the fixed electrode 9 are located in the center of the square insulating substrate 7, wherein the fixed electrode 9 is located at the center position in the flexible and angular supported moving electrode 8. But the action threshold is different, the closing threshold of the MEMS touch switch S3 is higher than that of the MEMS floor switch S4, and the MEMS touch switch depends on the target reaction force K when the armor is touchedMClosed, the latter relying on ground contact ground surface medium reaction force KLClosure is provided。
The flexible inclined support moving electrode 8 comprises a block-shaped support seat 81, a cylindrical spring 82, a limiting pin 83 and a mass block 84, and the materials are all conductive metals. The mass block 84 is a disk with a plurality of balance holes, and 6 semicircular notches 841 and 6 protrusions 842 are designed on the outer circle at intervals; 6 limit pins 83 fixed on the square insulating substrate 7 and respectively aligned with the semicircular notches 841 on the outer circle of the mass block 84, wherein the limit pins play a role in limiting the large displacement motion of the mass block 84; the total number of the 6 columnar springs 82 is 6, and two ends of each columnar spring 82 are respectively connected with the protrusions 842 on the mass block 84 and the block-shaped supporting seat 81, so that the mass block 84 is suspended above the square insulating substrate 7; the block-shaped supporting seats 81 are fixed on the square insulating substrate 7, one block-shaped supporting seat 81 is connected with a long connecting strip 85, and the long connecting strip 85 is connected with the d end of the MEMS touch switch S3 or the MEMS floor switch S4 of the ignition control circuit 2.
The fixed electrode 9 comprises a support seat 91, a helical coil spring 92, a tooth-shaped conductive ring 93 and a short connecting strip 94, which are made of conductive metal. Wherein, the supporting base 91 is fixed on the square insulating substrate 7, is positioned at the center of the mass block 94, and is connected with the tooth-shaped conductive ring 93 through the spiral coil spring 92. The short connecting bar 94 is connected to the e terminal of the MEMS engaging switch S3 or the MEMS floor switch S4 of the ignition control circuit 2.
The central axis of the micro-mechanical collision switch 1 is coincided with the elastic axis, the cylindrical spring 92 is not extended on the radial line, but is obliquely arranged outside the mass block 84, and the included angle between the central axis of the cylindrical spring 82 and the radial line is an acute angleα. The arc radius of 6 semicircular notches 841 is designed to be 85 micrometers, the radius of the limiting pin 83 is 60 micrometers, and the limiting gap is larger than the radial contact gap, so that the limitation of too large displacement and rotation generated when the mass block 84 is subjected to too large impact can be met. The outer circle of the tooth-shaped conducting ring 93 is provided with 16 teeth, the thickness is 15 microns, the diameter of the inner circle is 380 microns, and the annular gap between the tooth-shaped conducting ring and the mass block 84 is 80 microns. Spiral coil spring
Figure DEST_PATH_IMAGE002
The line width was 10 microns and the thickness was 30 microns. Target reaction force K when the Mass 94 of the MEMS slam switch S3 or the MEMS floor switch S4 is armoredMOr the ground when falling to the groundMedium reaction force KLActive, the MEMS slam switch S3 or MEMS floor switch S4 is closed.
When the invention is applied, in the in-chamber stage of the initial shot launching moment, F1 is output by other mechanisms positioned at the bottom mechanism 3 to excite the fuze power supply 21 to generate electricity; at the time of the maximum chamber pressure, the other mechanism X outputs F2 (greater than F1), and the control switch D1 of the ignition control circuit 2 is controlled to be closed; at the muzzle, the other mechanism X outputs F3 (far less than F2), so that the charging switch D2 is closed, and the circuit-conducting capacitor C is immediately charged to the required voltage value (the general detonation voltage is 12-25V). When the projectile flies away from the muzzle and reaches a safe distance (a distance defined by tactical technical standards, generally several tens to several hundreds of meters), the other mechanism X outputs VA to open the short-circuit switch S2 and release the short-circuit state of the electric detonator 22, but at this time, since the electronic switch S1 is not closed, even if the MEMS engaging switch S3 or the MEMS grounding switch S4 is closed, the circuit is not conducted, the capacitor C cannot discharge, that is, no current flows through the electric detonator 22, and therefore, the electric detonator 22 is "safe" from explosion. When the projectile flies to a remote arming distance, other mechanisms X output a remote arming signal VB, the electronic switch S1 is closed, and once the MEMS touch switch S3 or the MEMS ground switch S4 is closed, the capacitor C discharges, the circuit is conducted, and current flows in the electric detonator 22. Thus, the electric detonator 22 is now transferred from the "safe" state to the "armed" state.
In the target collision or landing stage, when the shot collides with an attacked armored target or lands, the target reaction force K is generated when the shot collides with the armorMOr ground medium reaction force KLWhen the MEMS touch switch S3 or the MEMS ground switch S4 is closed, the circuit is immediately turned on, the capacitor C is quickly discharged, and the current in the electric detonator 22 immediately reaches the initiation current to explode.

Claims (3)

1. A micro-mechanical collision switch control device comprises a structure formed by an MEMS collision switch and an ignition control circuit; the MEMS collision switch is an independent structure and comprises an MEMS collision switch S3 and an MEMS floor switch S4, and is positioned in a cavity in the center of the head mechanism; the ignition control circuit and other mechanisms are positioned on the bottom mechanism; the main pill charge is positioned between the head mechanism and the bottom mechanism; the fuze power supply and the explosion sequence are positioned on the bottom mechanism, and the MEMS collision switch and the explosion sequence are connected in series with the ignition control circuit by a lead; the ignition control circuit controlled by the MEMS collision switch consists of a fuse power supply, a control switch D1, a charging switch D2, an electronic switch S1, a short-circuit switch S2, an MEMS collision switch S3, an MEMS ground switch S4, a capacitor C and an electric detonator in an explosion sequence; the MEMS collision switch S3 and the MEMS floor switch S4 are connected in parallel to form an MEMS collision switch which is positioned in a cavity in the center of the head mechanism; other components of the ignition control circuit are positioned in the bottom mechanism, an electric detonator of an explosion sequence in the circuit is a first-level initiating explosive of the explosion sequence, and the electric detonator can explode when current flowing through the electric detonator reaches a detonation threshold value; the main pill charge is arranged between the head mechanism and the bottom mechanism, a groove or a hole of a lead is reserved on the shell, and the top end of the head mechanism is sealed; the ignition control circuit is a special ignition control circuit for a fuse of an electric detonator containing an explosion sequence, wherein a fuse power supply, a capacitor C, a control switch D1 and a charging switch D2 form a power supply loop; one end of the control switch D1 is connected with the anode of the fuse power supply, and the other end is connected with the charging switch D2; the positive pole of the capacitor C is connected with a charging switch D2, the negative pole is connected with a ground end, a short-circuit switch S2 is a safety switch of an electric detonator in an explosion sequence and is positioned in a bottom mechanism, a signal for controlling the closing of the short-circuit switch is a safety release signal VA in a fuse system, an electronic switch S1 is a time delay switch, a control signal for the closing action of the time delay switch is a remote safety release signal VB in the fuse system, VB is a time delay pulse signal, one end of the electronic switch S1 is connected with the negative pole of the capacitor C, and the other end of the electronic switch S2 is connected with the parallel end of the short-circuit switch; the closing sequence of the control switch in the ignition control circuit is as follows: a control switch D1, a charge switch D2, a short-circuit switch S2, an electronic switch S1, a MEMS touch switch S3 or a MEMS ground switch S4; the method is characterized in that: the MEMS collision switch is formed by connecting an MEMS collision switch S3 and an MEMS floor switch S4 in parallel, and is a normally open type micro mechanical switch module manufactured based on an MEMS process; the MEMS touch switch S3 and the MEMS floor switch S4 are the same in structure, are both thin-layer structures and comprise a square insulating substrate, a flexible inclined support moving electrode and a fixed electrode, wherein the flexible inclined support moving electrode and the fixed electrode are positioned in the center of the square insulating substrate, the fixed electrode is positioned in the center of the flexible inclined support moving electrode, but the action thresholds are different, the closing threshold of the MEMS touch switch S3 is higher than that of the MEMS floor switch S4, the MEMS touch switch S3 is closed by a target reaction force KM when touching an armor, and the MEMS floor switch S4 is closed by a ground medium reaction force KL when the floor is on the ground; the flexible inclined support moving electrode comprises a block-shaped support seat, a cylindrical spring, a limiting pin and a mass block structure, and the materials are conductive metals; the mass block is a disc with a plurality of balance holes, and 6 semicircular notches and 6 bulges are designed on the outer circle at intervals; the 6 limiting pins are fixed on the square insulating substrate and respectively aligned with the semicircular gaps of the excircle of the mass block, and play a role in limiting the large displacement motion of the mass block; the total number of the 6 cylindrical springs is 6, and two ends of the 6 cylindrical springs are respectively connected with the bulges on the mass block and the block-shaped supporting seat, so that the mass block is suspended above the square insulating substrate; the block-shaped supporting seats are fixed on the square insulating substrate, one of the block-shaped supporting seats is connected with a connecting strip, and the connecting strip is connected with the d end of an MEMS touch switch S3 or an MEMS floor switch S4 of the ignition control circuit.
2. A micromechanical collision switch control device according to claim 1, characterized in that: the fixed electrode comprises a support seat, a spiral coil spring, a tooth-shaped conducting ring and a connection
The strip is made of conductive metal; the supporting seat is fixed on a square insulating substrate, is positioned at the center of the mass block, is connected with the tooth-shaped conducting ring through a spiral coil spring, and the connecting strip is connected with the e end of an MEMS touch switch S3 or an MEMS floor switch S4 of the ignition control circuit.
3. A micromechanical collision switch control device according to claim 1, characterized in that: the central shaft of the micro-mechanical collision switch is superposed with the elastic shaft, the cylindrical spring is not extended on the radial line but is obliquely arranged outside the mass block, and the included angle between the central shaft of the cylindrical spring and the radial line is an acute angle alpha; the arc radius of 6 semicircular gaps is designed to be 85 micrometers, the radius of the limiting pin is 60 micrometers, and the limiting gap is larger than the radial contact gap, so that the mass block can be prevented from generating excessive displacement and rotation when being subjected to excessive impact; the excircle of the tooth-shaped conducting ring is provided with 16 teeth, the thickness is 15 micrometers, the diameter of the inner circle is 380 micrometers, and the annular gap between the tooth-shaped conducting ring and the mass block is 80 micrometers; the spiral coil spring has a line width of 10 micrometers and a thickness of 30 micrometers; when the mass block of the MEMS touch switch S3 or the MEMS floor switch S4 is acted by the target reaction force KM or the ground medium reaction force KL when the MEMS touch switch S3 or the MEMS floor switch S4 is touched, the MEMS touch switch S3 or the MEMS floor switch S4 is closed.
CN201910766388.9A 2019-08-20 2019-08-20 Micro-mechanical collision switch control device Active CN110571069B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910766388.9A CN110571069B (en) 2019-08-20 2019-08-20 Micro-mechanical collision switch control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910766388.9A CN110571069B (en) 2019-08-20 2019-08-20 Micro-mechanical collision switch control device

Publications (2)

Publication Number Publication Date
CN110571069A CN110571069A (en) 2019-12-13
CN110571069B true CN110571069B (en) 2021-07-02

Family

ID=68774074

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910766388.9A Active CN110571069B (en) 2019-08-20 2019-08-20 Micro-mechanical collision switch control device

Country Status (1)

Country Link
CN (1) CN110571069B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116007455A (en) * 2022-06-23 2023-04-25 北京理工大学 Tri-state inertial switch for penetration fuze and target-in and target-out moment judging method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7142087B2 (en) * 2004-01-27 2006-11-28 Lucent Technologies Inc. Micromechanical latching switch
CN101752141A (en) * 2009-12-21 2010-06-23 西安电子科技大学 A kind of flexion type acceleration switch
CN101789329B (en) * 2010-03-19 2012-10-17 上海交通大学 Three-dimensional multidirectional-sensitive micromechanical inertial electrical switch
US8237521B1 (en) * 2010-12-09 2012-08-07 The United States Of America As Represented By The Secretary Of The Army Triaxial MEMS acceleration switch
CN202205652U (en) * 2011-07-26 2012-04-25 国营红林机械厂 Trigger type electronic fuse short circuit switch
CN103594283B (en) * 2013-11-28 2015-08-19 重庆大学 A kind of micromechanics lateral vibration acceleration switch
CN105225887B (en) * 2015-10-15 2017-09-08 上海交通大学 A kind of sensitive micro-mechanical inertia switch of tight constraint type level
CN107359057B (en) * 2016-05-09 2019-07-12 南京理工大学 A kind of universal inertia switch of MEMS in recognizable load orientation section
CN107830773B (en) * 2017-10-09 2019-06-14 北京理工大学 A kind of slim MEMS motion control integrated apparatus and propellant actuated device
CN109307456B (en) * 2018-09-05 2021-03-19 南京理工大学 Control method of micro-electromechanical sequential logic ignition control device
CN109307457B (en) * 2018-09-05 2021-06-11 南京理工大学 Micro-electromechanical sequential logic ignition control device
CN110132074B (en) * 2019-06-12 2020-06-26 北京理工大学 Recoverable electromagnetic MEMS safety system applied to ammunition and implementation method thereof

Also Published As

Publication number Publication date
CN110571069A (en) 2019-12-13

Similar Documents

Publication Publication Date Title
CN109307456B (en) Control method of micro-electromechanical sequential logic ignition control device
US5269223A (en) Piezoelectric fuse system with safe and arm device for ammunition
CN109307457B (en) Micro-electromechanical sequential logic ignition control device
TW200409903A (en) Dual mode fuze
RU2341765C2 (en) Nose fuze
US7478595B1 (en) Base mounted airburst fuze for projectile
CA2161221C (en) Self-destruct fuse for improved conventional munitions
US9562755B2 (en) Safe and arm mechanisms and methods for explosive devices
CN114111471B (en) Multi-path parallel electromechanical trigger fuze for rotary rocket warhead
US6244184B1 (en) Fuze for submunition grenade
CN110571069B (en) Micro-mechanical collision switch control device
RU2329461C1 (en) Energy-containing current source
CN110455135A (en) A kind of control of MEMS impact switch wipes ground and fries ignition method and device
KR20090113832A (en) Self destruction impact fuse
RU62229U1 (en) HEAD BLASTER
RU2211437C1 (en) Nose percussion fuse
RU2479825C1 (en) Precision shell fuse with side function
US2455603A (en) Fuse
RU2522537C1 (en) Detachable rocket-propelled missile
US2541603A (en) Fuse
RU2356008C2 (en) Contact explosive
US3450046A (en) Firing pressure activation system for fuzes and components
US6740828B1 (en) Arm and safety switch
US2900906A (en) Self-destruction device
RU2288443C2 (en) Percussion fuse

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant