An Introduction Of Vehicle Reversing Sensors With Voice Distance Indicator (VDI) Technology
Today's drivers are more safety conscious than ever. With the popularity of SUVs, trucks, and larger vehicles, blind areas behind vehicles are an increasing problem. According to a recent survey, over one-fourth of all automotive accidents occur when a vehicle is in reverse. Echo-Location sonar now makes it affordable for drivers to have an added dimension of safety.
Ultrasonic and radar systems use sensors mounted in the rear bumper to determine the distance of objects or people from the vehicle. Audible signals (e.g., chimes) or visual signals (e.g., dash warning lights) indicate when an object has been detected. These signals may intensify (i.e., get louder or flash more rapidly) as the distance between the vehicle and the object or person narrows.
In vehicles such as cars, minivans and SUVs, it's difficult to get a sense of what's behind you when you're backing up. This can be a dangerous problem if there are small children around, such as when you're picking up your child after school or sports practice. Rear parking sensors (sometimes called Rear Park Assist) ensure that you're made aware of objects behind you when the vehicle is in reverse.
These parking aid systems contain Echo-Location sonar used by the US Navy and are designed to detect objects near the vehicles' rear bumpers and warn drivers of their proximity during parking maneuvers. These systems are designed with exclusive patented Voice Distance Indicator (VDI) technology that literally tells the driver the vehicle distance in feet/inches to an obstacle. The sensors used in these systems operate in all kinds of conditions (i.e. Fog, Rain, Snow, Darkness, Bright Sun). The systems start counting at 8 or 12 feet (depending on the model) and count down to 12 inches and are accurate to within +/- 2 inches.