hi,i'm working on project which avoids accident between two cars,for that purpose i'm measuring distance between two moving cars,
to measure distance i'm using ultrasonic ranger
hi,i'm working on project which avoids accident between two cars,for that purpose i'm measuring distance between two moving cars,
to measure distance i'm using ultrasonic ranger
The range on one of those rangefinders will be too short, they measure on the order of inches or maybe a couple feet. Also, the wind noise outside a car at speed will drown out the ultrasonic pings, reducing its range further.
It might warn you a few milliseconds before you hit the other car though...
The wind pressure will stop the transducer from working and might even damage it.
The wind noise will be much too high anyway.
Stick your head outside a moving car to hear what it sounds like.
It might pick up the reflection from the rear of a truck or bus but have a very short range with the tiny reflection from the rear of a streamlined car.
Max distance says 5m, you won't be able to prevent any accidents with that, maybe you could make a reverse driving indicator the beeps when your about to hit something?
Without looking at the limited range spec's for ultrasonic transducers and ignoring wind noise, he is designing a collision avoidance circuit for real cars.