EDN, May 26, 2011

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pickering Pickering Reed Relays Need Instrumentation Grade Reed Relays? Look No Further Pickering Electronics is a Manufacturer of high quality Reed Relays for: Instrumentation Automatic Test Equipment (ATE) High voltage switching Low thermal EMF Direct drive from CMOS RF switching and other specialist applications. SoftCenter™ Figure 4 The Fraunhofer Institute expects to bring to market a camera as small as a grain of salt, which could replace side- view mirrors, reducing airflow drag. Only Pickering has SoftCenter™ Technology mu-metal magnetic screen Internal Encapsulation Shell Instrumentation Grade Reed Switch Soft inner encapsulation material to protect Switch Diode Reed supporting coil to Self maximize magnetic drive Hard outer encapsulation material Pickering Reed Relays are encapsulated using a soft inner material to protect the reed switch capsule. The very hard compounds used by most other manufacturers can cause stresses that can potentially damage the reed switch and degrade contact resistance stability and life expectation. Go to www.pickeringrelay.com to fi nd out more.... Free samples available on request. information to deploy the passenger's air bags. The air bags deploy at differ- ent speeds, depending on the weight of the passenger. This sensor does not know, however, whether the passenger is leaning on the dashboard, reclining in the seat, or moving to the left or the right. The closer the passenger is to the deploying air bag, the greater the impact. The camera monitors the passenger's position, and, upon impact, deploys the air bag appropriately to the passenger's size and position. These cameras use IR LEDs rath- er than those in the visible spectrum because they must be able to work at night. It would be distracting to illu- minate the driver or the passenger with visible light for the camera to sense. The human eye detects light as visible at distances as great as approximately 700 nm, whereas IR cameras detect 850- to 900-nm-distant light. IR imaging also has a place outside the car for crash avoidance, and these applications require IR illumination. According to Sevugan Nagappan, mar- keting manager of the infrared business FOR MORE INFORMATION Analog Devices www.analog.com Apple Computer www.apple.com BMW www.bmwusa.com Ford www.ford.com Fraunhofer Institute www.fraunhofer.de/en Google www.google.com Infiniti www.infinitiusa.com pickeringrelay.com Mercedes-Benz www.mbusa.com Motorola www.motorola.com Osram Opto Semiconductors www.osram-os.com Stanford Artificial Intelligence Laboratory http://robotics. stanford.edu Toyota www.toyota.com Tel (Int): +(44) 1255 428141 Fax (Int): + (44) 1255 475058 E-Mail: sales@pickeringrelay.com Velodyne www.velodyne.com unit at Osram Opto Semiconductors, IR cameras can help in collision avoid- ance by seeing beyond what the high beams illuminate. "IR-LED illumina- tion allows you to see when you can't have your high beams on to see past your headlamps, for example, allowing the system to see beyond the headlights to see and avoid a deer entering the road," he says. IR LEDs' primary use has so far been in remote controls. However, these inexpensive LEDs use 10 mW or less of power. Automotive applications require output power of greater than 1W to illuminate the subject. In addition, the IR LED must be small enough to fit next to the IR camera and be inconspicuous. Nagappan estimates that the camera needs to measure less than 10 mm2 , and illuminating the IR LED requires 5 mm2 . He says that manufacturers can make LEDs in small packages that can provide 3.5W and that these devices are enabling new applications. Osram's 3.5W SFH 4236 IR LED has an integral lens with a narrow beam angle to focus the IR light, increase the beam inten- sity, and focus the beam into the eye box to watch the driver's eyes. Innovation is also driving down the cost of the cameras. The Fraunhofer Institute expects to bring to market a camera as small as a grain of salt and costing only a few euros. The resolu- tion currently is 250×250 pixels. These cameras could replace side-view mirrors, reducing airflow drag (Figure 4).EDN REFERENCES 1 Markoff, John, "Smarter Than You Think: Google Cars Drive Themselves, in Traffic," The New York Times, Oct 9, 2010, http://nyti.ms/jZUkLX. 2 Schwarz, Brent, "LIDAR: Mapping the world in 3D," Nature Photonics, July 2010, pg 429, http://bit.ly/ ktNDmr. 3 "Blind Spot Warning (BSW) System/ Blind Spot Intervention (BSI) System," YouTube, http://bit.ly/jmGVzE. You can reach Technical Editor Margery Conner at 1-805-461-8242 and margery. conner@ubm.com. Online Catalog or Download SoftCenter™ Mu-Metal Magnetic Screening Highest Grade Reed Switches

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