Automotive Electronics

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September 1, 2011 12:44 Ian Riches

As someone who spends a reasonable amount of time aboard aircraft, I have a certain interest in air safety. I recently came across an article on MSNBC titled "Are airline pilots forgetting how to fly?" This essentially argues that some recent fatal crashes have been caused by pilots being unfamiliar with how to operate the airplane when the automatic systems fail.

The automotive industry is clearly well behind aerospace in the levels of automation offered.  The article states that it is commonplace for the crew to only manually fly the aircraft for 90 seconds at each of take-off and landing.  However, with the increasing level of ADAS (Advanced Driver Assistance Systems) and other support, do we risk de-skilling drivers?

What will the driver who has relied on their automatic parking system do when it fails?  What will the driver used to autonomous cruise control do when driving a rental car without it?  I know from my own experience the momentary confusion that can often arise when switching to and from vehicles with manual and automatic transmission.

The industry is progressing upon generally sensible lines.  For example, the Volvo City Safety system, which can apply emergency braking effort automatically, offers no audio/visual warning to the driver.  This is deliberate, the thinking being that if it did, drivers may begin to rely on the system to keep an eye out for them.  The system intervention is deliberately late and harsh, so that it is truly an emergency aid only.

However, we regularly see examples of people taking dangerous and unsuitable roads because their sat-nav told them to.  Some seem to have already delegated navigation responsibilities to a machine, and will obey it blindly.

Safety and support system designers will need to keep a close eye on ensuring that they do not unintentionally de-skill drivers and leave them in situations that they no longer have the talents to deal with.


October 13, 2009 15:10 cwebber

STMicroelectronics has introduced its second automotive grade MEMS motion sensor, for use in systems such as adaptive front lights, anti-theft systems, navigation and control of vehicle dynamics. The AIS226DS is a two-axis in-plane accelerometer capable of sensing acceleration up to ±6g.  The new device can also resolve incredibly tiny angles of incline, smaller than 0.02 degrees.  The ability to accurately measure incline is important in auto-leveling lamp, e-parking brake, and HSA (Hill Start Aid) applications. http://www.st.com/stonline/stappl/cms/press/news/year2009/p2421.htm This is the second product ST has introduced that is designed to maintain highly stability and accuracy (±70mg) throughout the automotive temperature range –40 to +105 degrees C:  In 2H2008 ST introduced its first automotive grade device, the 3 axis, low g AIS326DQ. ST has been content to focus its MEMS resources on less operationally stringent applications, scoring two major successes for its MEMS accelerometers in the Nintendo Wii and Apple iPhone.  However the company nows seems intent on also leveraging its position in the automotive semiconductor sector (where Strategy Analytics analysis ranks it at #3 vendor with $1.52B sales in 2008) to advance its MEMS sensor business. http://www.strategyanalytics.com/default.aspx?mod=ReportAbstractViewer&a0=4738 This will further increase the competitive pressure on the other incumbent automotive inertial sensors vendors which include Bosch, Infineon, Analog Devices, Denso, Freescale, Melexis, MEMSIC, Sensata, Panasonic and Systron Donner.