Iee International Electronics and Engineering S.a.

Christian Bour

Andreas Petereit

Werner Bieck

Laurent Federspiel

Thomas Stifter

Philippe Boyer

Mathieu Lu-Dac

Franck Lemoine

Cecile Jouanique-Dubuis

Cécile Jouanique-Dubuis

Anne Lentes

Thomas Pelt

Markus Schreiner

An impact sensor for a vehicle. The impact sensor includes at least one strain-sensitive sensor element which comprises a sensor material, and at least two terminals, between which the sensor material is electrically connected. The sensor material is a metal-containing carbon material.

Impact sensor

A method of determining the ventilatory threshold of a subject in real time during an exercise session wherein data relating to physiological parameters of said subject are acquired and stored in function of time during the exercise session, said data including at least data indicative of the respiration and of the heart beat rate. The method includes a VT determination routine comprising the steps of: a) computing a first value of ventilatory threshold according to a first approach based on data relating to at least one of the physiological parameters acquired for the exercise session; b) computing a second value of ventilatory threshold according to a different, second approach based on data relating to at least one of the physiological parameters acquired for the exercise session; c) determining a confidence index for each of said first and second values of ventilatory threshold, wherein said confidence index reflects at least one of the detectability of the ventilatory threshold and the matching between the value of ventilatory threshold according to one approach and that according to the other approach.

Method and system for determining a ventilatory threshold

A foil-type switching element comprises a first carrier foil and a second carrier foil arranged at a certain distance from each other by means of a spacer, which comprises one opening () defining an active area. An elongate resistive layer () is provided on the second carrier foil within the active area while elongateshunt means () are arranged on the first miler foil within the active area and facing the resistive layer (). The form of the opening () in the spacer is such that the active area generally tapers in the longitudinal direction of the elongate resistive layer (), so that when pressure is applied on the switching element, the shunt means () shunt a portion of the resistive layer () thatprogressively increases with pressure, from the broad end of the spacer opening () towards its narrow end.

Foil-type switching element, in particular for use in collision detection systems

In order to provide a fast and reliable classification of an impact, the present invention proposes a method for the classification of an impact between an object and a vehicle, comprising the steps of detecting an initial contact between said object and said vehicle; recording a width data relating to a width of an impact zone between the object and the vehicle; processing said width data for determining the width of said impact zone a predetermined time interval after the initial contact; forming a first criterion for deciding whether the object is a pedestrian by identifying if the determined width of the impact zone lies between predetermined lower and upper first threshold values; determining that the object is human if said first criterion is met.

Classification method for pedestrian protection system

A collision recognition device for a vehicle is proposed, comprising a pressure sensor with a first electrode and a second electrode, both having first and second ends, the second end of the first electrode being connected to a first terminal of a first resistor, the second end of the second electrode being connected to a first terminal of a second resistor During use, a first voltage Vis applied to the first end of the first electrode, a second voltage Vis applied to a second terminal of the first resistor so that a voltage difference between said first terminal of the first resistor and said second terminal of said first resistor forms a first status voltage indicative of circuit integrity. A first signal voltage Vat the second end of the second electrode is indicative of whether said first and second electrodes are in contact. During a collision, the two electrodes are pressed together in the collision zone, which creates an electrical contact in this region. The signal voltage Vthus changes, and a collision can be detected. A fourth voltage Vis applied to the first end of the second electrode and a fifth voltage Vis applied to a second terminal of the second resistor so that a voltage difference between the first terminal of the second resistor and said second terminal of the second resistor forms a second status voltage indicative of circuit integrity.

Collision recognition device for a vehicle

An impact sensor system with at least one foil-type switching element having a plurality of active areas including at least a first a second carrier foil arranged at a certain distance by at least one first spacer.The spacer has a plurality of recesses defining at least a first part of the active areas. In each active area, at least two electrode structures are arranged between the first and second carrier foils in such way that in response to a force acting on the active area, the first and second carrier foils are pressed together against the reaction force of the carrier foils and that, above a predetermined activation threshold force, an electrical contact is established between the electrode structures. The foil-type switching element is configured such that the activation threshold forces of a first group of said the active areas and a second group of active areas is different.

Impact sensor system for pedestrian protection

A collision sensor comprises a sensing element to be arranged on a vehicle bumper element, and an elastic profile. The elastic profile comprises at least one hollow chamber for accommodating said sensing element and at least one clip means for positively interlocking with a corresponding locating means of said vehicle bumper element.

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Domprix, France

Christian Bour