By Jürgen Valldorf, Wolfgang Gessner
This stimulating and encouraging publication explores the current and anticipates the way forward for automobile Microsystems. The prior decade has visible huge, immense development within the use of automobile microsysems; their impact has been dramatic in decreasing casualties, controlling emissions and lengthening passenger convenience and automobile functionality. The ebook is a photograph of recent technological priorities in microsystems-based clever units that provides a mid-term viewpoint on coming clever structures purposes in cars.
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Additional info for Advanced Microsystems for Automotive Applications 2006 (VDI-Buch)
The sensor allows on-chip analogue integration of more than 128 pulses. 910 nm Tab. 1. Sensor chip parameters Three-Dimensional CMOS Image Sensor for Pedestrian Protection and Collision Mitigation The most challenging sensor specifications are the optical dynamic input range (DR) and the noise performance (NEP). The DR is determined by the distance range and the reflectivity range (min/max). With a given optics, the received optical signal decreases with the square of the object distance. Thus, the required distance range of 2 m - 25 m and reflectivity range of 5% - 100% call for a minimum DR of 70 dB.
During the start-up phase the pressure fields are connected in such a way that a direct comparison of the sensitive pressure fields becomes possible. Thereby damages of the pressure cells can be recognized. In that case an error code is sent to the airbag control unit (ECU), which is able to shut down only the defect sensor. Pressure cells with only one single pres- 49 50 Safety sure cell can provide this test only with the help of a reference sensor (right door - left door). In the case of an error both satellites would have to be driven down with such systems.
3. 1 Scenario A: Vehicle Detection In the test scenario, both cars (Renault and Mercedes) are visible to the test camera. The left figure shows the traffic scene taken with a photograph, the right figure shows the sensor response (shutter 1 in red, shutter 2 in yellow) and the estimated range data (in blue). The estimated range of 11 m and 5 m complies well with the actual situation. In the gap between both cars the reflected signal drops below the noise threshold, and thus yields no usable range data.