Honda Crash Detection System

MImeKillEr writes "MSNBC is reporting that Honda Motor Co. unveiled an early crash-detection system for one of their vehicles. The system is unique in working even before the driver responds. A radar in the front of the car stashed behind the Honda logo detects vehicles within a range of about 300 feet ahead. It then taps the brake and tightens the seatbelt. A buzzer goes off and a light on the dash is illuminated. If the driver responds, the braking power is boosted. If the driver fails to respond, the system kicks in and brakes more while also tightening the seat belt. Unfortunately, Japanese regulations don't allow for the system to fully stop the vehicle."

Comments

DOes it work ?

[dargaud]

Now I write radar software and I really don't have a clue how such a system can work reliably. A non-moving car 100m ahead ? That happens every time there's a parked car in a curb. Car radars are not like aircraft radars. The latter only has to see something ('anything') in the middle of a big mass of air. Nothing else around. A car radar would have to sort out lots of echos at various doppler: the ground is coming towards you (when it's far ahead), other cars going the same direction (slower in the right lane, faster in the left lane), cars coming the other way, parked cars, things hanging overhead (bridge, street lights. advertisement...)

Just imagine driving on a mountain road and out of a right curb comes a car driving the other way. The radar sees it right in front of you, coming your way. How does it react ? I'd hate to see it break suddenly, particularly if the road is wet or snowy.

Re:DOes it work ?

[Brento]

Just imagine driving on a mountain road and out of a right curb comes a car driving the other way. The radar sees it right in front of you, coming your way. How does it react ?

It works fine. Check out the radar-based cruise-control from Mercedes, now available on a few models. You can set your cruise to follow a vehicle ahead automatically. You just steer, and the two (or more) of you can pass cars and go through tunnels just fine without the cruise control panicking.

Re:DOes it work ?

[valkraider]

Many people are misinformed about the newest radar systems. With new technologies, police can do a lot more with "regular" radar than most people think. Check out Radartest.com for more in depth info and some good links.

Re:DOes it work ?

[Titusdot Groan]

How did this get an informative? This is an obvious (deliberate?) misreading of the parent post!

The work reliably part had nothing to do with speed it had to do with orientation -- how do you tell the parked car 100m ahead is in YOUR lane -- radar can't read the lines on the road and tell that your lane is about to curve and take you safely BY the parked car.

Re:DOes it work ?

[WolfWithoutAClause]

Wrong. This is a huge deal if you happen to have seen the problem 125m ahead and are taking evasive action other than braking, for example changing lanes or even swerving. The slightest braking during a sharp direction change can throw your car into a skid.

Ok. Good points. But I have a few observations:

a) if the vehicle has ABS (I assume it has), then a skid is unlikely

b) The system should be able to detect the cornering and adapt to it anyway to a large degree

c) in most cases a modest reduction in speed will greatly improve cornering anyway- maximum cornering goes as the square root of your speed- a reduction of 10% gives ~5% tighter cornering whilst reducing the energy of the car by ~20%.

Mercedes System already does this

[servicepack158]

The AMG benz's come with a cruise control system that when active will slow down if a car in front of you is going slower then you, and speed back up to cruise speed when they get out of your way. It can apply up to 20% of the breaking force of the vehicle too if there is a sudden stop. you can look at it and watch a flash presentation on the website. To the dork programmer who doesn't understand how it works: That's why honda didn't hire you for the project :) You only activate such a system above certain speeds. So basically it's an autopilot system for a car, but people always change lanes without looking so now they need to invent something to lock the steeringwheel :D

Here's a link to more info from Honda

[zptdooda]

Hereâ(TM)s more from Honda:

CMS

So itâ(TM)s more than just the 300 ft test, which would be arbitrary. It looks at "distance, speed and and anticipated path".

Sounds worse than a backseat driver though.

Re:300 feet?

[dex22]

You don't like seatbelts, and you claim to have exceptional response skills.

It is for people like you, who think they're great drivers so don't pay attention, that this system was developed.

Re:Instead of braking...

[SnowDog_2112]

It starts with an alert chime. It doesn't apply the tactile feedback (seatbelt+brake) unless you fail to respond and it feels a collision is still likely.

Honda has a whole page about this feature; check Google (or just read other posts in this thread, it's been linked twice already that I've seen).