November 2007
Intermediate to advanced
736 pages
46h 32m
English
Content preview from Consumer ElectronicsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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ULTRASONIC CAR SAFETY BELT SYSTEM
One of the results of car safety belt system developed by Mullard and the Ford Motor Co., means that even the car thief will have to strap himself in if he wishes to make off with his booty. The belt must not only be fastened but also positioned correctly across the wearer, Fig. 49.9(a).
As the block diagram in Fig. 49.9(b) shows, before the ignition will function the driver must occupy his seat activating a pressure switch beneath it, buckle the belt across his lap and close the belt switch. Provided the belt is worn correctly a 40 kHz signal emitted from an ultrasonic transmitter mounted in the belt is received by a detector built in the Windscreen pillar, which in turn completes the ignition circuit. If the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.