CN110739178A - acceleration switch with single mass block of double springs - Google Patents

acceleration switch with single mass block of double springs Download PDF

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Publication number
CN110739178A
CN110739178A CN201910872898.4A CN201910872898A CN110739178A CN 110739178 A CN110739178 A CN 110739178A CN 201910872898 A CN201910872898 A CN 201910872898A CN 110739178 A CN110739178 A CN 110739178A
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spring
nut
fixing system
electrode
acceleration switch
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CN201910872898.4A
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CN110739178B (en
Inventor
刘靖雷
卢齐跃
王立武
黄伟
赵宇亮
闫涵
朱维亮
吕智慧
王永滨
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Beijing Institute of Space Research Mechanical and Electricity
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Beijing Institute of Space Research Mechanical and Electricity
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Priority to CN201910872898.4A priority Critical patent/CN110739178B/en
Publication of CN110739178A publication Critical patent/CN110739178A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
    • H01H35/141—Details

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  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

The invention relates to an double-spring single-mass-block acceleration switch, which belongs to the technical field of measurement and is applied to a return control system of a return satellite.A mass block is specifically adopted to provide fixed pretightening force, the pretightening force can be adjusted through two springs, electrodes are used for adjusting an overload value, and an overload value adjusting structure and a pretightening force adjusting structure are distinguished, so that the trouble that other types of acceleration switches adjust the pretightening force and adjust the acceleration value again through replacing different springs is avoided, and the application precision of the switch can be effectively improved.

Description

acceleration switch with single mass block of double springs
Technical Field
The invention belongs to the technical field of measurement, and particularly relates to an double-spring single-mass acceleration switch which is applied to a return type satellite return control system.
Background
The acceleration switch plays an important role in the application fields of safety control, return control and the like of weapon models, spacecrafts and the like, the main principle forms of the acceleration switch are mercury type, steel ball type, straight sleeve type, swing ring type, swing rod type and the like, the novel acceleration switch based on the MEMS technology is also widely applied to consumer electronics, unmanned aerial vehicle control and other systems, the traditional mechanical acceleration switch has the advantages that the acceleration switch is a passive component, is widely applied to the application field which can not supply power for a long time or is in a standby state, and the precision is +/-0.5 g.
The mercury type acceleration switch takes mercury liquid as a flowing contact, and when mercury senses the action of external acceleration in the open air, the metal switch is switched on, so that the mercury type acceleration switch has the advantages of high reliability, but toxic metal objects are contained in the mercury type acceleration switch, and special protection is needed in the processing process of products;
the oscillating ring type overload sensitive mechanism ensures that the overload acceleration is sensed by the friction force of two contact surfaces between the mass block and the V-shaped damping block, has simple structure and convenient processing, but has definite defects in the aspect of limiting the freedom degree of the mass block and limited vibration resistance and impact resistance;
the steel ball type overload sensitive mechanism has compact structure, strong shock and vibration resistance and small friction resistance, is suitable for a vertical structure, has higher requirement on the height of a product, and is used in occasions with higher product height;
the straight sleeve type overload sensitive mechanism is compact in structure, high in requirement on machining precision of parts, capable of reducing the height and increasing the size of the mass block in the width direction under the condition that the mass block quality is guaranteed, and beneficial to reduction of the product height.
The swing rod type overload sensitive mechanism is limited by the structure, needs to occupy larger space and is suitable for occasions with larger volume.
The acceleration sensor with the novel MEMS structure has the characteristics of excellent shock resistance, higher precision and capability of outputting continuous overload, but belongs to an active device and needs continuous power supply for working.
Disclosure of Invention
The invention aims to solve the technical problems that the defects of the prior art are overcome, double-spring single-mass-block acceleration switches are provided, fixed pretightening force is provided by a mass block and can be adjusted by two springs, electrodes are used for adjusting the overload value, and the overload value adjusting structure and the pretightening force adjusting structure are separated, so that the troubles that other types of acceleration switches adjust the pretightening force and adjust the acceleration value again by replacing different springs are avoided, and the application precision of the acceleration switch can be effectively improved.
The purpose of the invention is realized by the following technical scheme:
double-spring single-mass acceleration switch comprises a shell system, an upper end fixing system and a lower end fixing system which are positioned at two ends in the shell system, an upper electrode pair which is arranged on the upper end fixing system, a lower electrode pair which is arranged on the lower end fixing system, a copper pipe which is jointly fixed by the upper end fixing system and the lower end fixing system, a movable copper core which is positioned in the copper pipe, an upper spring which is positioned between the upper end fixing system and the copper core, and a lower spring which is positioned between the lower end fixing system and the copper core, wherein the copper core is in contact with of the upper electrode pair and the lower electrode pair in a natural state, and the copper core is in contact with the other of the upper electrode pair and the lower electrode pair under an acceleration condition.
Preferably, the device also comprises a cable, wherein when the copper core is in contact with the upper counter electrode in a natural state and is in contact with the lower counter electrode under an acceleration condition;
two wires of the cable are respectively connected with the lower electrode and the lower spring; the lower spring is made of a conductor material.
Preferably, the copper core is a stepped cylinder, and the copper core is connected with the lower spring and the upper spring through thread teeth.
Preferably, the pair of upper electrodes are mounted on the upper end fixing system in a penetrating mode, and the depth of the pair of upper electrodes inserted into the copper pipe is adjustable.
Preferably, the pair of upper electrodes are mounted on the upper end fixing system in a threaded penetrating mode.
Preferably, the pair of lower electrodes are mounted on the lower end fixing system in a penetrating mode, and the depth of the pair of lower electrodes inserted into the copper pipe is adjustable.
Preferably, the pair of lower electrodes are mounted on the lower end fixing system in a threaded penetrating mode.
Preferably, the enclosure system comprises an th sealing gasket, a lower cover, a dumbbell-shaped shell, a second sealing gasket and an upper cover, wherein the th sealing gasket and the lower cover are used for sealing the end opening of the shell, and the second sealing gasket and the upper cover are used for sealing the other end opening of the shell.
Preferably, the lower end fixing system comprises th lead, a second lead, th nut, a second nut, a lower end cover, a lower gasket, th soldering tin, a lower locking sleeve, th gasket and a third nut;
the lead is connected with the lower spring through soldering tin, the second lead is simultaneously and electrically connected with the lower locking sleeve and the lower electrode through a lower gasket, the nut is connected with the shell through threads and used for fixing the lower end cover, the second nut is connected with the lower electrode through threads, the gasket and the third nut are connected on the lower locking sleeve, the lower electrode is connected with the lower locking sleeve through threads, and the lower end cover is fixedly sleeved on the lower locking sleeve.
Preferably, the upper end fixing system comprises a sixth nut, a fifth nut, an upper gasket, an upper end cover, an upper locking sleeve, second soldering tin, a second gasket and a fourth nut;
the sixth nut is connected with the upper electrode through threads; the fifth nut is connected with the shell through threads and used for fixing the upper end cover, and the upper gasket is positioned between the fifth nut and the upper end cover; the second soldering tin fixes the upper spring on the upper end cover; the fourth nut is connected with the upper locking sleeve through threads, and the second gasket is positioned between the fourth nut and the upper locking sleeve; the upper electrode is connected with the upper locking sleeve through threads; the upper end cover is fixedly sleeved on the upper locking sleeve.
Preferably, the precision of the double-spring single-mass acceleration switch is determined according to the compression force of the upper spring, the mass of the copper core, the compression force of the lower spring and the distance between the copper core and the upper electrode and the distance between the copper core and the lower electrode in a natural state.
Compared with the prior art, the invention has the following beneficial effects:
(1) the pretightening force can be adjusted through the mass block in the aspect of , and in addition, the pretightening force can be adjusted through the two springs in the aspect of , so that the adjusting range is larger, and the application range of the invention is larger;
(2) the invention can respectively adjust two electrodes for accurately adjusting the switching precision of the acceleration switch, the adjustment mode is flexible and accurate, and the two electrodes are not coupled with other structures;
(3) the invention is a passive device, has simple structure and high reliability, and is more suitable for the return working condition of the satellite;
(4) the internal core component of the invention is in a sealed state and is little influenced by environmental factors;
(5) the invention has better resistance to mechanics, and the error range of the upper and lower limits of the overload value is as follows: 0.5 g;
(6) compared with other types of angular speed switches, the acceleration switch provided by the invention has the advantages that fixed pre-tightening force is provided through the mass block, the pre-tightening force is adjustable, another electrodes are used for adjusting the overload value, the overload value adjusting structure is separated from the pre-tightening force adjusting structure, and the trouble that other types of acceleration switches adjust the pre-tightening force and adjust the acceleration value again through replacing different springs is avoided.
Drawings
FIG. 1 is a schematic structural diagram of an single dual-spring single-mass acceleration switch;
FIG. 2 is a schematic structural diagram of an upper end fixing system of an single-spring single-mass acceleration switch of the invention;
fig. 3 is a schematic structural diagram of a fixing system at the lower end of an single-spring single-mass acceleration switch.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further with reference to the accompanying drawings.
Example 1:
double-spring single-mass acceleration switch comprises a shell system 1, an upper end fixing system 7 and a lower end fixing system 2 which are positioned at two ends in the shell system 1, an upper counter electrode 79 arranged on the upper end fixing system 7, a lower counter electrode 211 arranged on the lower end fixing system 2, a copper pipe 5 fixed by the upper end fixing system 7 and the lower end fixing system 2 together, a movable copper core 4 positioned in the copper pipe 5, an upper spring 6 positioned between the upper end fixing system 7 and the copper core 4, and a lower spring 3 positioned between the lower end fixing system 2 and the copper core 4, wherein in a natural state, the copper core 4 is in contact with of the upper counter electrode 79 and the lower counter electrode 211, and in an acceleration condition, the copper core 4 is in contact with the other of the upper counter electrode 79 and the lower counter electrode 211.
The double-spring single mass acceleration switch also comprises a cable 8 and a connector 9, wherein two leads of the cable 8 are respectively connected with the lower electrode 211 and the lower spring 3; the lower spring 3 is made of a conductor material; the connector 9 is electrically connected to the cable 8.
The enclosure system 1 comprises a th sealing gasket 11, a lower cover 12, a dumbbell-shaped shell 13, a second sealing gasket 14 and an upper cover 15, wherein the th sealing gasket 11 and the lower cover 12 are used for sealing an end opening of the shell 13, and the second sealing gasket 14 and the upper cover 15 are used for sealing another end opening of the shell 13.
The lower end fixing system 2 comprises an th lead 21, a 22 th lead, a th nut 23, a 24 th nut, a 25 th lower end cover, a 26 th gasket, a th soldering tin 27, a 28 th locking sleeve, a th gasket 29 and a 210 th nut;
the th lead 21 is connected with the lower spring 3 through th soldering tin 27, the second lead 22 is electrically connected with the lower locking sleeve 28 and the lower electrode 211 through the lower gasket 26, the th nut 23 is connected with the shell 13 through threads and used for fixing the lower end cover 25, the second nut 24 is connected with the lower electrode 211 through threads, the th gasket 29 and the third nut 210 are connected on the lower locking sleeve 28, the lower electrode 211 is connected with the lower locking sleeve 28 through threads, the lower end cover 25 is fixedly sleeved on the lower locking sleeve 28, and the lower end cover 25 is an insulator.
The upper end fixing system 7 comprises a sixth nut 71, a fifth nut 72, an upper gasket 73, an upper end cover 74, an upper locking sleeve 75, a second soldering tin 76, a second gasket 77 and a fourth nut 78;
the sixth nut 71 is connected with the upper electrode 79 through threads; the fifth nut 72 is connected with the shell 13 through threads and used for fixing an upper end cover 74, and an upper gasket 73 is positioned between the fifth nut 72 and the upper end cover 74; the second solder 76 secures the upper spring 6 to the upper cap 74; a fourth nut 78 is threadedly coupled to the upper locking collar 75, and a second washer 77 is positioned between the fourth nut 78 and the upper locking collar 75; the upper electrode 79 is connected with the upper locking sleeve 75 through threads; the upper end cap 74 is fixedly sleeved on the upper locking sleeve 75, wherein the upper end cap 74 is an insulator.
In this embodiment, the copper core 4 is in contact with the upper counter electrode 79 in a natural state, and the copper core 4 is in contact with the lower counter electrode 211 in an acceleration condition.
The copper core 4 is a stepped cylinder, and the copper core 4 is connected with the lower spring 3 and the upper spring 6 through thread teeth.
The pair of upper electrodes 79 are mounted on the upper end fixing system 7 in a threaded penetrating mode, and the depth of the pair of upper electrodes 79 inserted into the copper pipe 5 is adjustable. The lower electrode 211 is mounted on the lower end fixing system 2 in a threaded penetrating manner, and the depth of the lower electrode 211 inserted into the copper pipe 5 is adjustable.
The precision of the double-spring single mass acceleration switch is determined according to the compression force of the upper spring 6, the mass of the copper core 4, the compression force of the lower spring 3 and the distance between the copper core 4 and the upper electrode 79 and the distance between the copper core 4 and the lower electrode 211 in a natural state.
Example 2:
as shown in fig. 1, the dual-spring single-mass acceleration switch comprises a housing system 1 for fixing the device, a lower end fixing system 2 for fixing a lower electrode 211 and providing an electrical connection function, a lower spring 3 positioned at the lower end, a copper core 4 positioned in the middle of the acceleration switch, a copper pipe 5 for providing a moving space of the copper core 4, an upper spring 6 positioned at the upper end, an upper end fixing system 7 for fixing an upper counter electrode 79 and providing an electrical connection function, and a cable 8 and a connector 9 for providing an external electrical interface, wherein the components form integral bodies through the housing system 1;
as shown in fig. 1, the enclosure system 1 is composed of an th sealing gasket 11, a lower cover 12, a dumbbell-shaped case 13, a second sealing gasket 14 and an upper cover 15, wherein the th sealing gasket 11 and the lower cover 12 seal a lower opening of the case 13, and the second sealing gasket 14 and the upper cover 15 seal an upper opening of the case 13;
as shown in fig. 1 and 2, the lower end fixing system 2 includes th conducting wire 21, 22 th conducting wire, th nut 23, 24 th nut, 25 th lower end cap, 26 th spacer, th soldering tin 27, 28 th locking sleeve, th spacer 29, 210 th nut, wherein th conducting wire 21 is connected with lower spring 3 through soldering tin 27, 22 th conducting wire is connected with lower locking sleeve 28, 211 lower electrode through 26 th spacer electrically, th nut 23 is connected with housing 13 through screw thread, functioning as fixed lower end cap 25, 24 th nut is connected with 211 lower electrode through screw thread, functioning as fixed lower electrode 211, th spacer 29, 210 th nut are connected on lower locking sleeve 28, functioning as fixed lower locking sleeve 28, functioning as screw thread between lower electrode 211 and lower locking sleeve 28, bottom end of lower electrode 211 has "" type groove, distance of lower electrode 211 inserted into copper pipe 5 can be adjusted through "" 8625 "lower end cap 25 is insulator;
as shown in fig. 1 and 2, the lower spring 3 is a cylindrical helical compression spring, and plays a role of connecting the copper core 4 with the lower end fixing system 2;
as shown in fig. 1, the copper core 4 is a step-shaped cylindrical mass block, the connection part of two ends and the spring is in a thread shape, the copper core 4 is connected with the lower spring 3 and the upper spring 6 through thread teeth, and the copper core 4 can move in a cylinder formed by the copper pipe 5;
as shown in fig. 1, the copper tube 5 is a tubular structure, and the copper tube 5 is fixed with the upper end cover 74 and the lower end cover 25 by tight fit;
as shown in fig. 1 and 3, the upper spring 6 is a cylindrical helical compression spring, and plays a role of connecting the copper core 4 with the upper end fixing system 7;
as shown in fig. 1 and 2, the upper end fixing system 7 includes a sixth nut 71, a fifth nut 72, an upper gasket 73, an upper end cap 74, an upper locking sleeve 75, a second solder 76, a second gasket 76, and a fourth nut 78, wherein the sixth nut 71 is connected with the upper electrode 79 through threads to fix the upper electrode 79, the fifth nut 72 is connected with the housing 13, the upper gasket 73 is located between the fifth nut 72 and the upper end cap 74, the fifth nut 72 is used for fixing the upper end cap 74, the second solder 76 fixes the upper spring 6 on the upper end cap 74, the fourth nut 78 is connected with the upper locking sleeve 75 through threads, the second gasket 77 is located between the fourth nut 78 and the upper locking sleeve 75, the fourth nut 78 is used for fixing the upper locking sleeve 75, the upper electrode 79 is connected with the upper locking sleeve 75 through threads, the top end of the upper electrode 79 has a groove of "", the upper electrode 79 is rotated into contact with the copper pipe 5 through adjustment of the groove of "" to enable the upper electrode 79 to rotate with the upper end of the copper pipe 5, and the upper electrode 79 is adjusted by the acceleration of the working force of the copper pipe 74, and the working switch is mainly determined by the acceleration of the working force of the environment;
as shown in fig. 1, the two conductors of the cable 8 are connected between the th conductor 21, the second conductor 22 and the connector 9;
as shown in fig. 1, the connector 9 serves as an external electrical connection.
The whole working process of the invention is as follows: in the initial state, when the acceleration switch does not feel any acceleration value, the upper electrode 79 of the acceleration switch is in contact with the copper core 4, at this time, the upper spring 6 and the lower spring 3 are both in a compressed state, and the compression force of the upper spring 6 is recorded as FUpper springThe compression force of the lower spring 3 is denoted as FLower springThe force of the upper electrode 79 on the copper core 4 is denoted as FUpper electrodeThe static friction force of the copper pipe 5 on the copper core 4 is marked as FMThe weight of the copper core 4 is m, the gravity acceleration is g, and the direction of the force is defined to be positive, then:
Flower spring-FUpper spring-mg-FM＝0
When the acceleration switch is subjected to a downward acceleration and the value of the acceleration is a, when the acceleration a is a minimum value, the copper core 4 does not move, and there are:
Flower spring-FUpper spring-mg-ma-FM＝0
When the value of a is sufficiently large, the copper core 4 is separated from the upper electrode 79. Assuming that the spring elastic coefficient of the dual-spring system is k, the vertical distance between the upper end surface of the copper core 4 and the upper electrode 79 is L, and the vertical distance between the lower end surface of the copper core 4 and the lower electrode 211 is H, when L < H, the following steps are provided:
Flower spring-FUpper spring-mg-ma-FM-k·L＝0
When L ═ H, then:
Flower spring-FUpper spring-mg-ma-FM-k·H≥0
At the moment, the acceleration switch is switched on, and the switching-on overload value of the acceleration switch can be adjusted by adjusting the vertical distance between the lower end surface of the copper core 4 and the lower electrode 211 to be H, specifically, when H is reduced, the switching-on overload value is reduced, and when H is increased, the switching-on overload value is increased.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.

Claims (11)

  1. The acceleration switch is characterized by comprising a shell system (1), an upper end fixing system (7) and a lower end fixing system (2) which are positioned at two ends in the shell system (1), an upper counter electrode (79) installed on the upper end fixing system (7), a lower counter electrode (211) installed on the lower end fixing system (2), a copper pipe (5) jointly fixed by the upper end fixing system (7) and the lower end fixing system (2), a movable copper core (4) positioned in the copper pipe (5), an upper spring (6) positioned between the upper end fixing system (7) and the copper core (4), and a lower spring (3) positioned between the lower end fixing system (2) and the copper core (4), wherein the copper core (4) is in contact with of the upper counter electrode (79) and the lower counter electrode (211) in a natural state, and the copper core (4) is in contact with another of the upper counter electrode (79) and the lower counter electrode (211) in an acceleration condition.
  2. 2. The double-spring single-mass acceleration switch of claim 1, further comprising a cable (8), wherein the copper core (4) is in contact with the upper counter electrode (79) in a natural state, and the copper core (4) is in contact with the lower counter electrode (211) in an acceleration condition;
    two leads of the cable (8) are respectively connected with the lower electrode (211) and the lower spring (3); the lower spring (3) is made of a conductor material.
  3. 3. The kind of double-spring single-mass acceleration switch of claim 1, characterized in that, the copper core (4) is a stepped cylinder, the copper core (4) is connected with the lower spring (3) and the upper spring (6) through the thread.
  4. 4. double-spring single-mass acceleration switch, according to claim 1, characterized in that, the pair of upper electrodes (79) is mounted in a through manner on the upper fixing system (7), and the depth of the pair of upper electrodes (79) inserted into the copper tube (5) is adjustable.
  5. 5. The kind of double-spring single-mass acceleration switch of claim 4, wherein the pair of upper electrodes (79) is mounted on the upper end fixing system (7) by means of threading.
  6. 6. The kind of double-spring single-mass acceleration switch of claim 1, wherein, the counter electrode (211) is mounted on the lower end fixing system (2) in a penetrating manner, and the depth of the counter electrode (211) inserted into the copper tube (5) is adjustable.
  7. 7. The kind of double-spring single-mass acceleration switch of claim 6, wherein, the pair of lower electrodes (211) is installed on the lower end fixing system (2) by means of threading.
  8. 8. The double-spring single-mass acceleration switch according to claims 1-7, wherein the enclosure system (1) includes a th sealing gasket (11), a lower cover (12), a dumbbell-shaped housing (13), a second sealing gasket (14), and an upper cover (15), the th sealing gasket (11) and the lower cover (12) are used for sealing a -end opening of the housing (13), and the second sealing gasket (14) and the upper cover (15) are used for sealing another -end opening of the housing (13).
  9. 9. The double-spring single-mass acceleration switch of claim 1-7 and , wherein the lower fixing system (2) comprises a th conducting wire (21), a second conducting wire (22), a th nut (23), a second nut (24), a lower end cap (25), a lower gasket (26), a th soldering tin (27), a lower locking sleeve (28), a th gasket (29) and a third nut (210);
    the th lead (21) is connected with the lower spring (3) through soldering tin (27), the second lead (22) is electrically connected with the lower locking sleeve (28) and the lower electrode (211) through a lower gasket (26), the th nut (23) is connected with the shell (13) through threads and used for fixing the lower end cover (25), the second nut (24) is connected with the lower electrode (211) through threads, the th gasket (29) and the third nut (210) are connected to the lower locking sleeve (28), the lower electrode (211) is connected with the lower locking sleeve (28) through threads, and the lower end cover (25) is fixedly sleeved on the lower locking sleeve (28).
  10. 10. The double-spring single-mass acceleration switch of of claims 1-7, wherein the upper end fixing system (7) comprises a sixth nut (71), a fifth nut (72), an upper washer (73), an upper end cap (74), an upper locking sleeve (75), a second solder (76), a second washer (77), and a fourth nut (78);
    the sixth nut (71) is connected with the upper electrode (79) through threads; the fifth nut (72) is connected with the shell (13) through threads and used for fixing the upper end cover (74), and the upper gasket (73) is positioned between the fifth nut (72) and the upper end cover (74); the second soldering tin (76) fixes the upper spring (6) on the upper end cover (74); the fourth nut (78) is connected with the upper locking sleeve (75) through threads, and the second gasket (77) is positioned between the fourth nut (78) and the upper locking sleeve (75); the upper electrode (79) is connected with the upper locking sleeve (75) through threads; the upper end cover (74) is fixedly sleeved on the upper locking sleeve (75).
  11. 11. The double-spring single-mass acceleration switch of claim 1-7 and , wherein the precision of the double-spring single-mass acceleration switch is determined by the compression force of the upper spring (6), the mass of the copper core (4), the compression force of the lower spring (3), and the distance between the copper core (4) and the upper electrode (79) and the lower electrode (211) in a natural state.
CN201910872898.4A 2019-09-16 2019-09-16 Double-spring single-mass acceleration switch Active CN110739178B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201910872898.4A CN110739178B (en) 2019-09-16 2019-09-16 Double-spring single-mass acceleration switch

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CN110739178A true CN110739178A (en) 2020-01-31
CN110739178B CN110739178B (en) 2022-07-29

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050039530A1 (en) * 2001-10-04 2005-02-24 Ralf Schellin Micromechanical sensor having a self-test function and optimization method
CN101667507A (en) * 2008-09-04 2010-03-10 贵州航天电器股份有限公司 Acceleration overload switch with high-low-pass bidirectional acceleration signal output
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
CN204886744U (en) * 2015-08-24 2015-12-16 中国人民解放军63983部队 Pontoon bridge monitoring system is from maintaining round sheet metal formula piezoelectricity power generation facility
CN106324284A (en) * 2015-06-15 2017-01-11 北京纳米能源与系统研究所 Accelerometer
CN108899246A (en) * 2018-08-15 2018-11-27 贵州航天电器股份有限公司 A kind of acceleration overload absorbing switching device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050039530A1 (en) * 2001-10-04 2005-02-24 Ralf Schellin Micromechanical sensor having a self-test function and optimization method
CN101667507A (en) * 2008-09-04 2010-03-10 贵州航天电器股份有限公司 Acceleration overload switch with high-low-pass bidirectional acceleration signal output
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
CN106324284A (en) * 2015-06-15 2017-01-11 北京纳米能源与系统研究所 Accelerometer
CN204886744U (en) * 2015-08-24 2015-12-16 中国人民解放军63983部队 Pontoon bridge monitoring system is from maintaining round sheet metal formula piezoelectricity power generation facility
CN108899246A (en) * 2018-08-15 2018-11-27 贵州航天电器股份有限公司 A kind of acceleration overload absorbing switching device

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