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IEE Press Release: Child Seat Presence and Orientation Detection

For the kids’ protection
Child Seat Presence and Orientation systems

The importance of the airbag as a contribution to car occupant safety 
cannot be underestimated. Statistics show that fatalities have been 
reduced by as much as 30 percent since their introduction. Portable 
child safety seats have also played a significant role in reducing death 
and injury among infants. But, used in conjunction, the airbag and child 
seat can pose a potentially lethal danger. An innovative system, Child 
Seat Presence and Orientation Detection (CPOD) can eliminate that danger.

There is not much that beats the joy of becoming a parent. A wave of 
euphoria coupled with a huge sigh of relief that everything has gone 
smoothly accompanies the birth of a child, especially for first time 
parents. But, let’s be honest, that initial happiness can soon subdued 
by a sense of almost constant worry. Will I be a good parent? Am I 
feeding the child properly? Perhaps most importantly, have I done 
everything to ensure it will be safe?

Modern parents face a plethora of child-safety product choices. Chief 
among them, for most parents, is the type of portable child seat or baby 
cradle they will use in their private vehicle. But it is not only the 
child seat that should meet all sorts of safety standards. The vehicle, 
too, should be fitted with the best equipment money can buy to ensure 
the child is protected.

In many cases, parents also face another problem. Where to place the 
child seat? Often one parent will be driving alone with the child, and 
will naturally want to keep an eye on the little one. So the front 
passenger seat is the logical place for the child seat. For parents who 
drive compact cars with no rear passenger doors, this is also the case. 
And families with four children can face a similar dilemma.

The problem with placing the child seat in the front of the car is that 
most modern vehicles are fitted with passenger airbags as standard. And 
a rear facing child seat poses a potentially lethal danger when coupled 
with an activated airbag. Indeed, there have been several reported cases 
of child fatalities caused by the passenger seat airbag.

There are, of course, several solutions to this problem, Having the 
manufacturer permanently disable the passenger airbag is one option, but 
one that poses a significant problem when an adult uses the seat – they 
no longer have that potentially life-saving security.

Many vehicles are now fitted with a manual deactivating switch, usually 
enabled with the car key. But recent surveys have shown that even the 
most caring and safety-conscious driver can sometimes forget, or simply 
not be bothered, to correctly use the one-off switch for the passenger 
airbag. A recent NHTSA study shows that in 48 percent of cases where a 
driver had a child (aged between one and twelve) in the front passenger 
seat, the airbag was switched on when it should have been off. And when 
an adult occupied the seat, in 52 percent of cases the airbag was 
switched off. Needless to say, in both scenarios the safety of the 
front-seat passenger is severely compromised.

The ideal solution would be an automatic system that can detect whether 
a rear-facing child seat has been placed on the front passenger seat. 
Fortunately, such a system exists. The Child Seat Presence and 
Orientation Detection (CPOD) system was developed by IEE International 
Electronics and Engineering to respond to the problem of activating and 
deactivating the airbag according to the situation. CPOD works via two 
systems – sensors in the passenger seat and two resonators in the child 
seat.

Operating in tandem, these allow the system to recognize the presence 
and the orientation of a child seat on the front passenger seat. This 
information is then transmitted to the Airbag Control Unit, which 
automatically switches off the relevant airbag if a rear-facing child 
seat is detected. The driver of the vehicle is also put at ease thanks 
to a warning signal that indicates when the airbag is switched off. The 
system is so sensitive that it can also detect whether the seat has been 
properly installed or if it is out of position.

The CPOD system – the only one of its kind – has been available to car 
manufacturers for almost ten years. But so far only Mercedes, Mazda an 
Opel/Vauxhall have offered the safety feature to their customers in 
conjunction with Britax Römer child seats (or, in the case of  Mercedes, 
with its own child seat range).

IEE, based in Luxembourg and with research and development facilities in 
Michigan and Seoul, has been developing sensor safety systems for the 
automobile industry since 1993. Among its innovate designs are Passenger 
Presence Detection (PPD), Seat Belt Reminder (SBR) and Occupant 
Classification (OC®).

The company is currently developing its next generation of thinner 
resonators that will allow the system to be integrated into more compact 
child seats and will also reduce the cost to the car and child seat 
manufacturers. Indeed, the company says it already has commitments from 
major European child seat manufacturers to install the new resonators 
into their range of products.

The hope, therefore, is that the CPOD system will soon become accepted 
by automobile manufacturers as an industry standard. That would 
certainly put many parents’ minds at ease and could help save numerous 
lives.

886 Words

Contact

Françoise Pütz
Senior Corporate Communication Specialist
IEE S.A.
2b, route de Trèves
L-2632 Luxembourg	

Phone :    +352 424737 471
Fax :        +352 424737 203
E-Mail :    francoise.puetz@iee.lu
Internet :  www.iee.lu