Robert Boschgmbh

Other

Daimler Chrysler Ag

Conti Temic Microelectronic Gmbh

Adc Automotive Distance Control Systems Gmbh

Werner Steiner

Heribert Weber

Werner Nitschke

Thomas Huber

Guenter Anton Fendt

Michael Bischoff

Norbert Mueller

Johannes Rinkens

Stefan Schaeffer

Peter Schaedler

Ruediger Deppe

Michael Beuschel

Wolfgang E Mueller

Klaus Heyers

Herbert Goebel

Christoph Treutler

Steffen Schmidt

Thomas Moelkner

Hans-Peter Didra

Frank Klopf

Hans-Friedemann Kober

Ralf Henn

Hubert Braunwarth

Wolfgang Schmid

Gerhard Schilling

Josef Kuttenreich

Alfred Baumgartner

Philip Cutuli

Frank Grosshauser

Robert Gold

Janez Skedelj

Ralf Reichart

Disclosed is a method for determining relevant objects in the vicinity of a motor vehicle by an environmental detection sensor. A calculation of the probable trajectory of objects is thus not necessary. The only objects that are classified as relevant are those with a greater probability of a collision despite an average driver response such as evasive action and/or braking. The probability of a collision is determined in accordance with at least two values that are calculated from vehicle and environmental data. A first value describes future evasive action or evasive action that has already been initiated and a second value describes a deceleration operation. Each of the two or more values is delimited by a threshold value, which indicates the start of a critical range. The braking devices are activated if at least one of the determined values lies in the critical range.

Method for determining relevant objects

A micromechanical pressure sensor and a method for producing a micromechanical pressure sensor. This pressure sensor has at least one membrane and a measuring element situated on the membrane. A pressure applied at the membrane or a pressure differential applied at the different sides of the membrane results in deformation of the membrane. Simultaneous with the deformation of the membrane, the measuring element is subjected to elastic elongation and/or compression. In a piezo-sensitive component, such elastic elongation and/or compression generates a measured variable in the measuring element, which represents the applied pressure or the applied pressure differential at the membrane. It is provided in this context that the measuring element have at least partially a NiCr(Si) layer. Due to an at least partial crystallization in the production of the micromechanical pressure sensor, this NiCr(Si) layer has more advantageous piezoelectrical characteristics than an amorphous NiCr(Si) layer.

Micromechanical high-pressure sensor

Previously in a bus system, voltage signals were transmitted from the central unit to the modules, which could reply thereto by variation of the current input. A disadvantage thereby is the relatively high susceptibility to interference of the current input, which itself already must be kept relatively small due to the energy consumption, as well as the correspondingly high effort and expense for an error-free recognition of the signals transmitted from the modules in the central unit. It is now suggested, that the modules also answer to the central unit by means of voltage signals superposed on the direct supply voltage, whereby for the time duration of the signal transmission by the modules, the central unit provides the direct supply voltage to the bus line over a resistor, so that the voltage signal of the module can be detected in the central unit on the bus line on the side of the resistor facing away from the direct supply voltage. A preferred application for bus systems in motor vehicles, especially for a sensor data bus, is provided.

Method for the transmission of signals in a bus system, superposed on a direct supply voltage

A method for having the control unit access the measured data of individual sensors flexibly over time, and includes providing for the control unit to transmit a request message to the sensors, and having each sensor, by comparing the request message with its own address, derive whether and in what time slot, it should transmit its measured data to the control unit.

Method for data transmission between a control unit for restraint devices and sensors

A mass flow sensor is described. To improve the membrane stability of the known mass flow sensor, in particular the reoxide layer which is present in the known mass flow sensor is replaced by a thicker PECVD silicon oxide layer. The thickness of the silicon oxide layer deposited on the platinum layer is increased, and the known mass flow sensor is also provided with a cover layer of PECVD silicon nitride forming a moisture barrier.

Mass flow sensor having an improved membrane stability

Method for data transmission

A sensor has a membrane, on which at least one resistor element is situated. The membrane has a membrane layer which is composed of a plurality of partial layers. In addition, a covering layer is provided which is composed of a plurality of partial layers. The partial layers of the membrane and the covering layer are selected so that both in the membrane and in the covering layer light tensile stresses are set, the tensile stresses preferably being roughly the same.

Sensor having a membrane

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Schrobenhausen, Germany

Werner Steiner