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Conti Temic Microelectronic Gmbh

Temic Telefunken Microelectronic Gmbh

Hermann Kueblbeck

Helmut Steurer

Peter Steiner

Peter Weidel

Ernst Rottenkolber

Richard Baur

Guenter Anton Fendt

Alfons Woehrl

Horst Laucht

An activating algorithm is generated for rollover detection for safety-related devices in automotive vehicles. First, a theoretical characteristic rollover curve, adapted to the respective vehicle, is assumed. This theoretical rollover curve is approximated with the aid of low pass filter functions to specific cutoff frequencies and trigger thresholds respectively. These cutoff frequencies and trigger thresholds are adapted to the rollover scenarios to be detected. The sensor signals generated by an angular rate sensor for sensing the rotational velocity of the rolling motion, are processed and evaluated by these low pass filter functions for activating a safety device, if necessary. The low pass filter functions provide a rollover curve which is an approximation of the theoretical rollover curve.

Method for generating an activating algorithm for rollover detection for safety-related devices in automotive vehicles

A method for rollover detection for automotive vehicles with safety-related devices, such as roll bars, (side) airbags and seat-belt tensioners involves the following steps and features. An angular rate of rotation (&ohgr; ) around the vehicle longitudinal axis is provided by the signal of a gyrosensor, and an initial position angle (&agr; ) identifying the initial position of the vehicle transverse axis is determined from at least one sensor signal. An integral of the angular rate is added to the initial position angle. The absolute value of the resulting sum, which is proportional to the momentary inclination angle relative to the horizontal plane, is then compared to a trigger threshold that is a function of the angular rate and vehicle-specific parameters. A safety-related device is triggered if the absolute value of the resulting sum exceeds the trigger threshold.

Method for rollover detection for automotive vehicles with safety-related devices

A pyrotechnical ignition system with integrated ignition circuit for an occupant restraint system for motor vehicles includes electrical components for triggering or communication functions integrated therein, a capacitor arrangement, having a flat non-conductive external surface is used as a substrate or carrier element on which the other components are directly arranged and carried. A conductor structure linking the components can be formed by insertable metal parts that are arranged in the housing and project into the holding chamber in which the capacitor arrangement and the circuit component are arranged, and make contact with contact zones on the upper side of the circuit or the capacitor arrangement. The conductor structure may be a printed-conductor structure that is precipitated on non-conductive external surfaces of the capacitor arrangement, and the lateral surfaces thereof, connect the upper and the lower sides of the ignition capacitor as well as the individual capacitor electrodes within the capacitor arrangement to form one or several capacitors, in particular the ignition capacitor. The ignition bridge layer is situated on the capacitor arrangement or on the circuit.

Pyrotechnical ignition system with integrated ignition circuit

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Schrobenhausen, Germany

Hermann Kueblbeck