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Automatic 3D laser measurement system for automated car parking solution


Automatic 3D laser measurement system for automated parking solution in car park helps to pack the cars with a high density

(LASE GmbH) (Wesel, 13.08.2018)

The application called LaseCPS (Car Park System) has been installed in a highly innovative automated car park, where it was demanded to park cars in a minimum space and where cars are moved to their parking spaces fully automated. By the utilization of 2D and 3D laser scanners the cars are measured in transfer cabins, in order to know their position and dimensions as well as to check, if there are still people in the cabin. After the measurements a lifting mechanism lowers the whole platform and transports the car to its parking place.

LASE has commissioned a combined 2D and 3D laser measurement system for automatic parking in an automated car park where it makes a significant contribution to pack the cars as dent as possible. Car drivers only need to drive their car into a cabin with a hoist platform and to check in at the ticket machine. After leaving the cabin and check-in the door shuts and the combined laser measurement system measures the car three-dimensionally and checks, if no people are still remain in the cabin. After measuring the car can be lowered and lifted to its parking place.

The installed system, a combined hard- and software solution by LASE called LaseCPS (Car Park System), is a laser measurement system working with two 3D laser scanners from the LASE 3000D-C1-224 Series, which are installed in the front left and rear right corners of the parking cabin. Another two 2D laser scanners are mounted in the two other remaining corners of the cabin. Furthermore the solution consists of a software application core with two different functions, where the cars both will be detected in 2D and where the dimension of the cars is detected in 3D. The first function, the so called “Discovery Mode”, describes the guidance of the car while driving into the parking cabin. The car must be positioned on the hoist platform and has a specific shifting system, where poorly parked cars can be corrected in their position with a maximum shifting range of 200 mm. In case of reaching a determined “safety region” on the hoist platform, a robot lifts the car by the wheels and transfers it to the parking space.

The second function is the 3D laser measurement process, which generates highly accurate 3D measurement data of the car in all dimensions. When the driver has left the car and finished at the ticket machine, the car is measured. All measurement data are transferred by an Ethernet TCP/IP interface: X/Y-Position (front, back, right, left), width, height, length, degree of misalignment as well as the max. dimension around the car to the car park control system.

For commissioning and maintenance purpose the data are visualized in a 3D point cloud that is also surrounded by an algorithmically based cuboid resp. bounding box to show the maximum dimension of the car. This information is also used to compare it with the max. values due to restrictions of the car dimensions. Nevertheless also black and white or dry and wet cars do not disturb the measurement results, so that the dimension of the cars is still measured accurately.

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Image on top: Entrance of a huge car park / © shutterstock (alex5711)