DE19610554B4 - Acceleration sensor assembly - Google Patents
Acceleration sensor assembly Download PDFInfo
- Publication number
- DE19610554B4 DE19610554B4 DE19610554A DE19610554A DE19610554B4 DE 19610554 B4 DE19610554 B4 DE 19610554B4 DE 19610554 A DE19610554 A DE 19610554A DE 19610554 A DE19610554 A DE 19610554A DE 19610554 B4 DE19610554 B4 DE 19610554B4
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- Germany
- Prior art keywords
- assembly according
- sensors
- components
- planar
- acceleration
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- 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.)
- Expired - Fee Related
Links
- 230000001133 acceleration Effects 0.000 title claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 6
- 210000002105 tongue Anatomy 0.000 description 11
- 239000004020 conductor Substances 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 239000000758 substrate Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B7/00—Microstructural systems; Auxiliary parts of microstructural devices or systems
- B81B7/0032—Packages or encapsulation
- B81B7/0074—3D packaging, i.e. encapsulation containing one or several MEMS devices arranged in planes non-parallel to the mounting board
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/166—Mechanical, construction or arrangement details of inertial navigation systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
- G01C19/5607—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using vibrating tuning forks
- G01C19/5628—Manufacturing; Trimming; Mounting; Housings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
- G01C19/5783—Mountings or housings not specific to any of the devices covered by groups G01C19/5607 - G01C19/5719
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/02—Housings
- G01P1/023—Housings for acceleration measuring devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/0888—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values for indicating angular acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/097—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by vibratory elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B2201/00—Specific applications of microelectromechanical systems
- B81B2201/02—Sensors
- B81B2201/0228—Inertial sensors
- B81B2201/0235—Accelerometers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B2201/00—Specific applications of microelectromechanical systems
- B81B2201/02—Sensors
- B81B2201/0228—Inertial sensors
- B81B2201/0242—Gyroscopes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P2015/0805—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
- G01P2015/0822—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass
- G01P2015/0825—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass for one single degree of freedom of movement of the mass
- G01P2015/0828—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration for defining out-of-plane movement of the mass for one single degree of freedom of movement of the mass the mass being of the paddle type being suspended at one of its longitudinal ends
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Pressure Sensors (AREA)
- Gyroscopes (AREA)
Abstract
Beschleunigungssensorbaugruppe mit ersten und zweiten ebenen, Beschleunigungssensoren tragenden Bauteilen, dadurch gekennzeichnet, daß die Beschleunigungssensoren (2, 2') aus den ebenen Bauteilen (1, 1') herausgearbeitet sind, und daß die ebenen Bauteile (1, 1') ineinandergreifende Oberflächenstrukturen (8, 10, 11) aufweisen, die aus dem Material der ebenen Bauteile (1, 1') geformt sind und die die Bauteile (1, 1') winkelmäßig zueinander fixieren.Acceleration sensor assembly with first and second planar components carrying acceleration sensors, characterized in that the Acceleration sensors (2, 2 ') from the planar components (1, 1') worked out, and that the planar components (1, 1 ') interlocking surface structures (8, 10, 11) consisting of the material of the planar components (1, 1 ') are formed and the components (1, 1') angularly to each other fix.
Description
Die Erfindung betrifft eine Beschleunigungssensorbaugruppe nach dem Oberbegriff des Anspruches 1.The The invention relates to an acceleration sensor assembly according to Preamble of claim 1.
Es ist bekannt, aus monolithischen Blöcken wie beispielsweise Siliciumscheiben Beschleunigungssensorbauteile als Festkörper durch mikromechanische Bearbeitung herzustellen. Hierbei dienen oszillierende Stimmgabeln dem Erfassen von Resonanzen, wenn sie Rotationsbeschleunigungen ausgesetzt sind. Zum Erfassen von Linearbeschleunigungen dienen Zungen, an deren freien Enden Massen angeordnet sind. Diese Sensoren sind hierbei einstückig zu dem Blockmaterial, aus dem sie herausgearbeitet wurden. Es ist auch bekannt, in das Blockmaterial analoge und/oder digitale elektrische Schaltungen zu integrieren, wie beispielsweise Treiberschaltungen, Sensorschaltungen, Verarbeitungsschaltungen und Signalschaltungen, womit sich aktive Festkörperbauteile oder Chips ergeben.It is known, from monolithic blocks such as silicon wafers Acceleration sensor components as a solid by micromechanical Machining. Here are oscillating tuning forks detecting resonances when they are spin accelerations are exposed. To detect linear accelerations Tongues, at the free ends of which masses are arranged. These sensors are in one piece to the block material from which they were worked out. It is Also known in the block material analog and / or digital electrical circuits such as driver circuits, sensor circuits, Processing circuits and signal circuits, which active Solid-state devices or chips.
Diese bekannten Vorrichtungen werden durch mikromechanische Bearbeitung von im wesentlichen zweidimensionalen ebenen Blöcken oder Scheiben hergestellt, so daß die Stimmgabeln und die Linearsensoren in der Ebene des Materials liegen. Hierbei erfassen die Stimmgabeln Drehungen um ihre Symmetrieachse, während die Linearsensoren Linearbeschleunigungen erfassen, welche rechtwinklig zu ihrer Symmetrieebene verlaufen. Bei einem ebenen mikromechanisch bearbeiteten Block können Stimmgabeln rechtwinklig zueinander angeordnet werden, so daß Drehbeschleunigungen in zwei Achsen erfaßt werden, während eine Linearbeschleunigung rechtwinklig zur Ebene des ebenen Blocks erfaßbar ist.These known devices are micromechanical processing made of substantially two-dimensional flat blocks or discs, So that the Tuning forks and the linear sensors lie in the plane of the material. Here, the tuning forks capture rotations about their symmetry axis, while the linear sensors detect linear accelerations, which are rectangular extend to its plane of symmetry. In a plane micromechanical edited block can Tuning forks are arranged at right angles to each other, so that spins detected in two axes be while a linear acceleration perpendicular to the plane block plane ascertainable is.
Um Drehungen um drei rechtwinklig zueinander verlaufende Achsen zu erfassen, ist es bekannt, zwei der vorgenannten Bauteile in einer dreidimensionalen Form miteinander rechtwinklig zu verbinden. Um Linearbeschleunigungen in drei rechtwinklig zueinander verlaufenden Achsen zu erfassen, müssen drei Bauteile miteinander verbunden werden. Sollen die Beschleunigungseffekte genau gemessen werden, müssen die zwei bzw. drei Bauteile bzw. Chips genau rechtwinklig zueinander ausgerichtet werden. Da die ebenen Vorrichtungen klein sind, ist es schwierig und kostspielig, bei der Montage die Chips genau rechtwinklig zueinander auszurichten.Around Rotations about three perpendicular axes to each other capture, it is known, two of the aforementioned components in one three-dimensional shape to connect with each other at right angles. Around Linear accelerations in three perpendicular to each other Axes need to capture three components are connected together. Shall the acceleration effects must be measured accurately, the two or three components or chips exactly at right angles to each other be aligned. Since the planar devices are small, is It is difficult and costly, when mounting the chips exactly right angles to align with each other.
Eine
gattungsgemäße Beschleunigungssensorbaugruppe
offenbart die
Eine
weitere gattungsgemäße Beschleunigungssensorbaugruppe
offenbart die
Es besteht die Aufgabe, zwei oder mehr Beschleunigungssensorchips so auszubilden, daß bei ihrem Zusammenbau eine einwandfreie rechtwinklige Ausrichtung sich ergibt.It The task is to have two or more accelerometer chips like this to train that at their Assembly results in a proper right angle orientation.
Gelöst wird diese Aufgabe mit den Merkmalen des Anspruches 1. Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.Is solved This object with the features of claim 1. Advantageous embodiments are the dependent claims removable.
Ausführungsbeispiele werden nachfolgend an Hand der Zeichnungen näher erläutert. Es zeigen:embodiments will be explained in more detail with reference to the drawings. Show it:
Die
Der
Sensor
Die
Die
Die
Die
Die
Die
Gemäß
Bei
der in
Andere Verbindungsformen können ebenfalls verwendet werden. Es ist nicht wesentlich für die ebenen Chips rechtwinklig zueinander angeordnet zu werden. Sie können auch unter anderen Winkeln zusammengefügt werden. Obwohl bevorzugt Beschleunigungssensoren aus dem gleichen Material wie die Chips bestehen, ist es auch möglich, sie separat herzustellen, um sie sodann an Montageplatten zu befestigen, die die vorerwähnten randseitigen Verbindungsformstücke aufweisen.Other Connection forms can also be used. It is not essential for the level Chips are arranged at right angles to each other. You can also be put together at different angles. Although preferred Acceleration sensors made of the same material as the chips it is also possible make them separately, then attach them to mounting plates, which the aforementioned edge connection fittings exhibit.
Die Steifigkeit der Baueinheiten hängt ab von der Geometrie der Verbindungsstücke und der Art der elektrischen Verbindungen. Konventionelle Schweiß- und Vergußtechniken können zur Verbesserung der Steifigkeit der Struktur verwendet werden.The Rigidity of the units depends on the geometry of the connectors and the type of electrical Links. Conventional welding and casting techniques can be used to improve the rigidity of the structure.
Die Geometrie der Sensoren in den ebenen Bauteilen kann entweder während oder nach deren Herstellung und vor dem Zusammenbau verändert werden, um Schwingungsresonanzen oder andere Kreuzkopplungseffekte zwischen den Sensoren zu vermeiden.The Geometry of the sensors in the plane components can be either during or changed after their manufacture and before assembly, to vibrational resonances or other cross-coupling effects between to avoid the sensors.
Claims (11)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9507930.7A GB9507930D0 (en) | 1995-04-19 | 1995-04-19 | Inertial sensor assemblies |
GB9507930 | 1995-04-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19610554A1 DE19610554A1 (en) | 1996-10-24 |
DE19610554B4 true DE19610554B4 (en) | 2006-09-21 |
Family
ID=10773183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19610554A Expired - Fee Related DE19610554B4 (en) | 1995-04-19 | 1996-03-18 | Acceleration sensor assembly |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPH08304081A (en) |
DE (1) | DE19610554B4 (en) |
FR (1) | FR2733321A1 (en) |
GB (1) | GB9507930D0 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997037195A1 (en) * | 1996-03-29 | 1997-10-09 | Ngk Insulators, Ltd. | Oscillation gyro sensor, composite sensor and process of producing gyro sensor |
US6003369A (en) * | 1997-05-19 | 1999-12-21 | Continental Teves, Inc. | Method for manufacturing encapsulated semiconductor devices |
JP2000097707A (en) | 1998-09-18 | 2000-04-07 | Fujitsu Ltd | Acceleration sensor |
FR2861464B1 (en) * | 2003-10-28 | 2006-02-17 | Commissariat Energie Atomique | MOTION DETECTOR WITH SIX DEGREES OF FREEDOM WITH THREE POSITION SENSORS AND METHOD OF MANUFACTURING A SENSOR |
SE528404C2 (en) * | 2004-10-20 | 2006-11-07 | Imego Ab | The sensor arrangement |
JP5037819B2 (en) | 2005-03-04 | 2012-10-03 | ソニー株式会社 | Electronics |
DE102005023591A1 (en) * | 2005-05-18 | 2006-11-30 | Hl-Planar Technik Gmbh | Field measuring device, measuring module for a field measuring device and method of production for a plurality of measuring modules |
DE102005047873B4 (en) * | 2005-10-06 | 2010-10-14 | Günthner, Wolfgang, Dipl.-Ing. | Miniaturized inertial measuring system |
US7237437B1 (en) * | 2005-10-27 | 2007-07-03 | Honeywell International Inc. | MEMS sensor systems and methods |
FR2903812B1 (en) * | 2006-07-13 | 2008-10-31 | Commissariat Energie Atomique | INTEGRATED CIRCUIT DISTRIBUTED TO AT LEAST TWO NON-PARALLEL PLANS AND METHOD FOR PRODUCING THE SAME |
DE102009001247A1 (en) | 2009-02-27 | 2010-09-09 | Sensordynamics Ag | Micro-electro-mechanical sensor |
DE102014207766A1 (en) * | 2014-04-24 | 2015-10-29 | Continental Teves Ag & Co. Ohg | Monitor 3-axis inertial sensor with 2-axis inertial sensor |
JP6519122B2 (en) * | 2014-08-25 | 2019-05-29 | セイコーエプソン株式会社 | Sensor device, electronic device and mobile |
DE102016122042B4 (en) | 2015-11-20 | 2022-02-17 | Jena Optronik Gmbh | Sensor assembly for determining the position of an object |
KR101724332B1 (en) * | 2015-12-16 | 2017-04-07 | 국방과학연구소 | Inertial measurement unit |
WO2019143838A1 (en) * | 2018-01-17 | 2019-07-25 | Cubic Corporation | Cuboid inertial measurement unit |
GB2571916A (en) * | 2018-02-23 | 2019-09-18 | Atlantic Inertial Systems Ltd | Inertial measurement units |
WO2020208670A1 (en) * | 2019-04-08 | 2020-10-15 | 三菱電機株式会社 | Outdoor unit for air-conditioner |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5012316A (en) * | 1989-03-28 | 1991-04-30 | Cardiac Pacemakers, Inc. | Multiaxial transducer interconnection apparatus |
DE9113744U1 (en) * | 1991-11-05 | 1992-01-16 | SMT & Hybrid GmbH, O-8012 Dresden | Three-dimensional micromechanical acceleration sensor with integrated electronics |
-
1995
- 1995-04-19 GB GBGB9507930.7A patent/GB9507930D0/en active Pending
-
1996
- 1996-03-18 DE DE19610554A patent/DE19610554B4/en not_active Expired - Fee Related
- 1996-04-02 FR FR9604294A patent/FR2733321A1/en not_active Withdrawn
- 1996-04-18 JP JP8096940A patent/JPH08304081A/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5012316A (en) * | 1989-03-28 | 1991-04-30 | Cardiac Pacemakers, Inc. | Multiaxial transducer interconnection apparatus |
DE9113744U1 (en) * | 1991-11-05 | 1992-01-16 | SMT & Hybrid GmbH, O-8012 Dresden | Three-dimensional micromechanical acceleration sensor with integrated electronics |
Also Published As
Publication number | Publication date |
---|---|
DE19610554A1 (en) | 1996-10-24 |
FR2733321A1 (en) | 1996-10-25 |
JPH08304081A (en) | 1996-11-22 |
GB9507930D0 (en) | 1995-06-14 |
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Legal Events
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8127 | New person/name/address of the applicant |
Owner name: SMITHS GROUP PLC, LONDON, GB |
|
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |