Post by account_disabled on Feb 27, 2024 0:14:58 GMT -5
Current modern vehicles have a very useful technology for those who drive for long hours, whether on high-speed highways or congested roads: adaptive cruise control, or adaptive cruise control.
In practice, this device accelerates and brakes the car alone, according to the speed of the vehicle in front. And, if there is no vehicle ahead, it maintains the speed pre-established by the driver. But, how does it work?
The ACC's secret lies in a high-precision radar Chinese Singapore Phone Number List installed in the front grille or below the car's bumper, which monitors objects in front, and detects speed, distance and direction of movement. This information is passed to the vehicle's electronic control unit, which determines when to accelerate or brake. In vehicles with automatic transmission, it is even possible to stop the vehicle completely.
The radars are developed and supplied by Sistemistas, large auto parts manufacturers that deliver ready-made, on-demand solutions to automakers. Currently, there are two levels of radar, which differ basically by the distance at which they detect objects ahead. The more powerful the radar, the greater the distance, with the most modern radar seeing objects up to 302 meters away.
In addition to vehicles, radars also identify cyclists and pedestrians, which allows the incorporation of other technologies, such as automatic emergency braking. In these cases, suppliers also indicate the adoption of high-resolution cameras to detect people and objects on both sides of the vehicle, with artificial intelligence software for perception and behavioral prediction.
History
Nowadays, ACCs are basically controlled by radars. However, the beginning of this technology was laser, using equipment called lidar. Mistubishi was a pioneer, in 1992, with the Debonair model. The lidar, equipment that measures distance using a laser (as in an electronic measuring tape), only alerted the approach of objects ahead, without activating the brakes or accelerator.
In 1995, the Mitsubishi Diamante was the first car to feature ACC, which controlled speed via the accelerator and downshift, but did not yet activate the brakes, a function that was only incorporated in 2000, by Toyota.
Another way to make ACC work is through cameras. In 1999, the Subaru Legacy Lancaster was the first to use this technology.
Until 2006, ACCs operated with a minimum speed limit, starting at 30 km/h. Below this, the system would turn off and alert the driver of the need to regain control of the car.
The first car to feature ACC that actually stopped completely was the Lexus LS 460. The radar-assisted system maintained continuous control from speeds from 0 km/h to 100 km/h.
Today, all automakers offer some type of ACC, even on more popular models. More sophisticated vehicles also have ACC integrated with GPS, with radar and cameras that read traffic signs and automatically adjust speed according to the maximum limit on the road. On German highways, in sections where there is no speed limit, ACC uses the speed set by the driver.
In practice, this device accelerates and brakes the car alone, according to the speed of the vehicle in front. And, if there is no vehicle ahead, it maintains the speed pre-established by the driver. But, how does it work?
The ACC's secret lies in a high-precision radar Chinese Singapore Phone Number List installed in the front grille or below the car's bumper, which monitors objects in front, and detects speed, distance and direction of movement. This information is passed to the vehicle's electronic control unit, which determines when to accelerate or brake. In vehicles with automatic transmission, it is even possible to stop the vehicle completely.
The radars are developed and supplied by Sistemistas, large auto parts manufacturers that deliver ready-made, on-demand solutions to automakers. Currently, there are two levels of radar, which differ basically by the distance at which they detect objects ahead. The more powerful the radar, the greater the distance, with the most modern radar seeing objects up to 302 meters away.
In addition to vehicles, radars also identify cyclists and pedestrians, which allows the incorporation of other technologies, such as automatic emergency braking. In these cases, suppliers also indicate the adoption of high-resolution cameras to detect people and objects on both sides of the vehicle, with artificial intelligence software for perception and behavioral prediction.
History
Nowadays, ACCs are basically controlled by radars. However, the beginning of this technology was laser, using equipment called lidar. Mistubishi was a pioneer, in 1992, with the Debonair model. The lidar, equipment that measures distance using a laser (as in an electronic measuring tape), only alerted the approach of objects ahead, without activating the brakes or accelerator.
In 1995, the Mitsubishi Diamante was the first car to feature ACC, which controlled speed via the accelerator and downshift, but did not yet activate the brakes, a function that was only incorporated in 2000, by Toyota.
Another way to make ACC work is through cameras. In 1999, the Subaru Legacy Lancaster was the first to use this technology.
Until 2006, ACCs operated with a minimum speed limit, starting at 30 km/h. Below this, the system would turn off and alert the driver of the need to regain control of the car.
The first car to feature ACC that actually stopped completely was the Lexus LS 460. The radar-assisted system maintained continuous control from speeds from 0 km/h to 100 km/h.
Today, all automakers offer some type of ACC, even on more popular models. More sophisticated vehicles also have ACC integrated with GPS, with radar and cameras that read traffic signs and automatically adjust speed according to the maximum limit on the road. On German highways, in sections where there is no speed limit, ACC uses the speed set by the driver.