SensorDynamics was a European semiconductor company specialized in developing and manufacturing high-volume micro- and wireless semiconductor sensor products for applications in automotive, industry and high-end consumer sectors. The company was acquired by Maxim Integrated Products, Inc.; a semiconductor company based in Sunnyvale, California. Acquisition was announced in Jul 2011 by Tunc Doluca, CEO and President of Maxim. SensorDynamics was acquired for $164 million . SensorDynamics developed and produced custom-made designs and standard components for use in vehicle stabilization, occupant protection, navigation systems, keyless go systems or autonomous energy generators for wireless and battery free controllers for industrial, automotive and high-end consumer application. With its headquarters in Graz, Austria, SensorDynamics had offices in Italy and Germany and a worldwide sales and distribution network. The company employed about 130 people in July 2011. Wikipedia.

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Agency: European Commission | Branch: FP7 | Program: BSG-SME | Phase: SME-1 | Award Amount: 1.35M | Year: 2010

The three-dimensional optical measurement of objects and surfaces is a state of the art technology in many industries like the automotive or medical sector. It is used for the reverse engineering process, the quality management and new fields of application like inspection and accelerated development process. The total cost of such a system ranges from 25T to 200T making it almost not affordable for SMEs which can therefore not benefit from this technology compared to LEs. White light hand-scanner systems which do not require a high-cost position tracking system are becoming more important having high potential for a boost in this market. The accurate and easy creation of three dimensional images of real objects is achieved by sequential measured surface scans. Existing 3D white light scanners suffer from complex manual post-processing due to inaccurate measured data and technical limited number of surface scans. The goal is to create a system with remarkable advantages compared to existing scanning devices. A method and technology for the continuously real-time 3D white light scanning will be developed. The innovation will focus on the ability of full automated accurate processing of the surface data.

Agency: European Commission | Branch: FP7 | Program: BSG-SME | Phase: SME-1 | Award Amount: 1.42M | Year: 2011

Sensors for motion tracking are used in a broad variety of contexts: Image stabilisation in cameras, automotive applications like drive control or precise airbag deployment, and even for recording the movements of a person in sports, physiotherapy or cinematographic character animation. The sensing principle is the detection of acceleration and rotation rate by inertial forces that act on a suspended static or vibrating proof mass. To address low cost markets, micromachining technologies produce thousands of these sensor structures - so-called MEMS (Micro Electro-Mechanical Systems) - on a 200 mm silicon wafer. An Inertial Measurement Unit (IMU) is formed through integration of electronic signal conditioning and sensor elements in a single device that is capable to measure motion in several degrees of freedom. The MILEPOST project targets to extend the accessible markets by a systematic improvement of the long-term stability of IMUs with respect to the electronics and MEMS design and process. The final project goal is to demonstrate a monolithic cluster for sensing threedimensional acceleration and angular velocity. The participating three SMEs provide in-depth system design and integration experience on automotive inertial sensors (SensorDynamics, AT), a broad application background (Xsens, NL), and detailed knowledge about MEMS manufacturing (MEMS Foundry Itzehoe, DE). Their research partners are Fraunhofer Institute for Silicon Technology (DE) and Consorzio Pisa Ricerche (IT). Considering the ever falling price per function in electronic products, the companies expect that they will not be able to compensate turnaround loss by higher productivity in their current activity fields. Systematic research along the whole value creation chain of complex integrated IMUs is therefore a vital need for the SMEs to gain new business opportunities.

SensorDynamics | Date: 2010-02-03

The invention relates to an electromechanic microsensor (MEMS) (1) comprising drive elements (2, 3, 4) which are moved linearly in an x-y plane and disposed on a substrate for determining at least two, preferably three, components of the yaw rate vector of the substrate, wherein two groups of drive elements (2, 3; 4) exist, which are driven essentially in directions running essentially at right angles to each other. The electromechanic microsensor (MEMS) (1) according to the invention is characterized in that the drive elements (2, 4; 3, 4) which are moved at right angles to each other are connected to one another for synchronizing the movements by means of a coupling device (6, 7) that is rotatably mounted on the substrate.

SensorDynamics | Date: 2012-06-29

A transponder is disclosed to receive a wireless electromagnetic query signal and transmit a corresponding wireless electromagnetic response signal. The transponder comprises a first coil and at least one further coil that function as antennas to receive the wireless electromagnetic query signal and generate separate wired electrical incoming signals. An axis of the first coil and an axis of the at least one further coil are differently aligned in space, and each coil is associated with at least one means for limiting the voltage of the respective incoming signal. The separate wired electrical incoming signals are rectified and converted to current signals. The peak values of the current signals are detected and compared, such that a control signal is generated to identify one coil between the first coil and the at least one further coil that has a larger peak value of current.

The invention relates to a microgyroscope for determining rotational movements about an x and/or y and z axis, comprising a substrate, several oscillating masses (4, 5), springs for fastening the oscillating masses (4, 5) to the substrate, drive elements for vibrating at least individual ones of the masses in an oscillatory manner in the x-y plane in order to produce Coriolis forces when the substrate is rotated, and sensor elements for defecting deflections of the masses (4, 5) on account of the Coriolis forces produced. At least individual ones of the masses (4, 5) are arranged in two groups. The masses (4, 5) of both groups can be jointly induced by the drive elements to carry out an oscillating primary movement in the plane of the x-y axis. The masses (4) of the first group are arranged on the substrate in such a manner that they allow movement starting from the x-y plane. The masses (5) of the second group are arranged on the substrate in such a manner that they allow movements perpendicular to the oscillating primary movement in the plane of the x-y axis.

In a method for the measurement and analysis of tyre air pressure with an allocation of wheel positions (I, II, III, IV) of a vehicle (1) for analysis in a tyre air pressure measurement system each wheel (2) of the vehicle (1) is allocated an air pressure checking device (10), an LF receiver (11), in particular a magnetic field strength receiver, an analysis unit (13), an RF-transmission device (12) and an individual wheel code. The LF receiver (11) receives electrical LF signals from an LF transmission device (4) of a central unit (3) arranged in the vehicle (1), the analysis unit (13) analyses the received signal amplitudes and from these determines a wheel rotation rate and the RF transmission device (12) of the wheel (2) sends RF signals with information about the wheel rotation rate and the individual wheel code to the central unit (3) of the vehicle (1). The central unit (3) determines the wheel position (I, II, III oder IV) of the wheel (2) using another measurement system (7) and allocates the air pressure checking device (10) and its individual wheel code to the known wheel position (I, II, III or IV) on the vehicle (1). A tyre air pressure measurement system has a central unit (3) arranged in a vehicle (1) with an LF transmission device (4), an RF receiver device (5) and a central analysis device (6). An air pressure checking device (10) arranged on each wheel (2) of the vehicle (1), an LF receiver device (11), RF transmission device (12) and analysis unit (13) for determining a rotation rate using a periodically varying amplitude of the received LF signal, and a measurement system (7) for measuring the wheel rotation rate at each wheel (2) and/or for determining the type of bend are additionally provided.

The invention relates to a MEMS gyroscope for detecting rotational motions about an x-, y-, and/or z-axis, in particular a 3-D sensor, containing a substrate, several, at least two, preferably four, drive masses (2) that are movable radially with respect to a center and drive elements (7) for the oscillating vibration of the drive masses (2) in order to generate Coriolis forces on the drive masses (2) in the event of rotation of the substrate about the x-, y-, and/or z-axis. The oscillating drive masses (2) are connected to at least one further non-oscillating sensor mass (3) that however can be rotated about the x-, y-, and/or z-axis together with the oscillating drive masses (2) on the substrate. Sensor elements (9, 10) are used to detect deflections of the sensor mass (3) and/or drive masses (2) in relation to the substrate due to the generated Coriolis forces. At least two, preferably four anchors (5) are used to rotatably fasten the sensor mass (3) to the substrate by means of springs (4).

Hammer H.,SensorDynamics
Journal of Microelectromechanical Systems | Year: 2010

Analytical expressions for electric potential and electric fringe fields in regions above the fingers of MEMS (microelectromechanical systems) comb capacitances are derived using potential-theoretic methods. The formulas are valid for the following: 1) a comb geometry exhibiting a large number of identical fingers and 2) a finger geometry where the gap between fingers is small compared to the height of the fingers and the finger overlap. For these conditions, symmetries that are inherent to the comb geometry can be exploited fruitfully to set up a properly defined Dirichlet problem formulation for the potential which can be solved for explicitly, yielding a series expansion for the electrostatic potential and electric field components. The accuracy of the approximated analytical solutions, obtained by truncating the series expansions to contain only a finite number of terms, is compared with the results obtained from finite element simulations of the electrostatic potential and electric field. From the analytic result, an approximation to the levitation force acting on the upper finger surfaces is derived. A formula expressing the mean length of the fringe electric field lines emanating from the upper finger surfaces into the ambient space is presented. © 2006 IEEE.

SensorDynamics | Date: 2010-06-03

A MEMS sensor is provided with a substrate and a sensor element. The sensor element moves in response to an influence registered by the sensor primarily in an oscillating turn around a sensor axis that is parallel to the substrate. The sensor has an anchor arranged on the substrate in order to hold the sensor element onto the substrate. A connecting element arranges the sensor element on the anchor.

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