The "X Bee" compact car, which Suzuki Motor Corp released Dec 25, 2017, is equipped with a unit integrating a monocular camera and a laser radar device as a sensor for automatic braking.
Thus far, Suzuki has used a unit integrating a monocular camera and a laser radar device or a stereo camera depending on vehicle type. The "Swift" uses a unit integrating a monocular camera and a laser radar device while the "Solio" and "Ignis" are equipped with a stereo camera. For the X Bee, the company plans to use the integrated unit for a while.
The integrated unit is supplied by Continental AG. Its unit integrating a monocular camera and a laser radar device was also employed for the "Spacia" light car, which Suzuki released Dec 14, 2017. The Spacia started to be developed almost at the same time as the X Bee, and the development of them proceeded in parallel.
When Suzuki was selecting an ADAS sensor, it could reduce procurement cost by using the same sensor for the Spacia and X Bee, the company said. So, it employed Continental's unit for both of the vehicles.
The performance of Continental's integrated unit with which an automatic brake operates for both vehicles and pedestrians is equivalent to that of a stereo camera. On the other hand, the hardware of Continental's integrated unit is the same as the hardware that Toyota Motor Corp uses for "Toyota Safety Sense C" for compact cars.
Partly because of the volume efficiency improved by Toyota's employment of the hardware, the procurement cost of the integrated unit is lower than that of a stereo camera. Therefore, Suzuki employed the unit integrating a monocular camera and a laser radar device instead of a stereo camera.
Automatic brake for backing
As in the case of the Spacia, the X Bee is equipped with an automatic brake that functions at the time of backing. Four ultrasonic sensors attached to the rear bumper are used to detect obstacles located behind the vehicle. When the system determines that the crash into an obstacle cannot be avoided, it automatically apply the brakes to avoid the crash or reduce the damage caused by it.
The automatic brake for backing functions when the vehicle is backing at a speed of about 7km/h (approx 4.35mph) and there is an obstacle 3m or less behind the vehicle.