Bayerische Motoren Werke Aktiengesellschaft

Telefunken Electronic Gmbh

Josef Mahalek

Bogdan Serban

Michel Witte

Hartmut Hantsch

Peter Thoma

Egon Vetter

A motor vehicle sensor arrangement which is used to detect jamming, i.e, an obstruction, at a movable vehicle part which can be moved into an end position, such as an electric window, a sliding and tilting roof, a convertible top, or a servo-actuated door. A cavity defined by opposing resilient walls is located proximate, but outside, the path of movement of the movable vehicle part and at a selected distance from the end position. A distance sensor, for example a pressure transducer, is arranged in the cavity between the resilient walls. When an object obstructs the path of movement of the movable vehicle part toward the end position, the resilient walls are moved toward each other. When the distance sensor contacts a portion of the opposing resilient wall, the distance sensor actuates a response signal indicating a jam. Preferably the distance sensor is mounted on one of the resilient walls approximately facing the direction in which the movable vehicle part moves toward the end position, while a projection extending toward the distance sensor is provided on the opposite resilient wall. The projection substantially reduces the travel distance to actuate the jamming signal, since the distance between the distance sensor and the projection is substantially shorter than the distance between the two opposing resilient walls.

Motor vehicle sensor arrangement for detecting jamming

A circut arrangement for serial data transfer has a transmitting device with several bit-parallel input information units, a serial data transfer line and a receiving device via which the transferred data are correspondingly converted into bit-parallel output information units to drive control elements or logic circuits. The data to be transferred forms on the data transfer line a data word composed of a start pulse, several information units corresponding to the number of bit-parallel input information units forming a data block, and a defined data pause. By cascading several transmitting and receiving devices of the same kind, the number of bit-parallel, input and output information units can be altered, whereby the data word on the data transfer line is also altered by sequential joining of a corresponding number of data blocks, each having the same number of information units.

Circuit arrangement for serial data transfer

The invention relates to a short circuit and overload protection circuit for output stage transistors based on the principle of power monitoring. The gist of the invention is that the collector emitter voltage of a power output stage transistor is detected by a limitation and threshold value network and a protective transistor whose collector drives the base of the driving transistor of the output stage and protects the latter from overload. The output stage transistor is driven in timed sequence or continuous operation. By a variation of the base current of the output stage transistor via a change in its base resistance, the response threshold of the protection device may be influenced within a large range.

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Neufahrn, Germany

Josef Mahalek