Advanced Microsystems Automotive Applications 2004 by Jürgen Valldorf, Wolfgang Gessner

By Jürgen Valldorf, Wolfgang Gessner

Microsystems functions (MST) in autos became common: they allow the creation of a sequence of latest features and even as the alternative of latest applied sciences providing more suitable functionality and higher price for funds. Microsystems are essential for pleasant an entire transition from the automatically pushed motor vehicle procedure to a routinely established yet ICT-driven process as a part of a likewise advanced atmosphere. With the advent of micro-systems a chain of demanding situations come up concerning complexity, structures layout, reliability, serviceability, and so forth. those demanding situations need to be addressed for you to meet excessive client expectancies bearing on functionality and cost.

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This co-integrated pressure sensor overcomes many of the performance limitations of previous single chip designs. Low-Cost, Single-Chip Amplified Pressure Sensor in a Moulded Package for Tire Pressure Measurement The co-integrated pressure sensor offers improved performance over previous single chip pressure sensor solutions while reducing size and cost compared to hybrid configurations. 65 micron CMOS process has been used along with MEMS processing to create the pressure sensor with EEPROM on-chip to store the calibration and compensation values for the sensor.

Fig. 3. Linearity correction capability of co-integrated sensor system. Figures 3, 4, and 5 show data from sensors before and after correction by the circuitry. The data in figure 4 shows the ability of the signal processor to compensate for pressure non-linearity, over at temperature range of -20ºC to +110ºC. 2% for temperature coefficient of zero error, even when the sensor exhibits a 2nd order non-linearity in the temperature coefficient of zero. Low-Cost, Single-Chip Amplified Pressure Sensor in a Moulded Package for Tire Pressure Measurement Figure 5 represents the corrected temperature coefficient of span.

In this paper new concepts and new algorithm design for vehicle rollover detection systems are presented. Delphi developed a fully tested system, which allows detecting rollover scenarios to trigger restraint systems as rollbars, belt pretensions, window airbags and/or head airbags. 1 Rollover Risks and Statistical Background Rollover accidents are very heavy accidents. But different statistics are existing about rollover accident analysis. One reason for statistical variation is that these accidents are not counted as separate accidents.

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