The LaseTVM systems are high precision volumetric bulk material measurement systems for road trucks or mining trucks. The LaseTVM product family consists of the products LaseTVM-S and LaseTVM-M. With the LaseTVM-S (Static) version, the truck bed is placed centrally underneath the sensor(s). A measurement is made while the truck is at a standstill. With the LaseTVM-M (Motion), the truck drives through the measuring system without stopping and the measurement is made in transit. For both variants the laser scanners are installed above the driveway. The LaseTVM-S variant uses a 3D laser scanner that generates a 3D profile of the loading area when the truck is at a standstill. With the LaseTVM-M variant, two 2D laser scanners are arranged 90° offset to each other - looking down. One 2D laser scanner measures the position of the measured object (truck with loading area) in the passage, the second 2D laser scanner generates a transverse profile (transverse to the direction of travel). By combining both sensor data, a 3D profile of the loading area is generated and the volume is calculated from this.

LaseTVM-3D-S

The LaseTVM-3D-S (Static) system is used for measurements when the truck is at a standstill. One or two 3D laser scanner (L3000D-C2-118 3D) are used for volume measurements while the truck is standing still over a measuring area or a weighing bridge. LASE’s high-precision sensors allow an exact measurement of the bulk material volume. The 3D measurement data is sent to an IPC evaluation unit which runs the software for calculating the volume. The measuring system can consist of one or two sensors. Two sensors are required if the loading area is long or if an attached trailer has to be measured.

The sensors are attached to a portal or a pillar with a jib/ boom, at a height of approx. 7 m this depends also a bit on the truck size and location. When the truck is within the measuring area, the 3D profile measurement is performed. This takes about 10 seconds. The measurement is always made in two steps: an empty 3D profile measurement and a fully loaded 3D profile measurement. The difference between the two measurements result in the volume of the bulk material. Several measuring stations can also work in combination. In this case there is a full and empty measurement at different locations. It is also possible to save the empty profiles of a vehicle, so that afterwards only the full measurements have to be taken. The browser-based commissioning tool enables commissioning and error analysis at the measuring station via a handheld device (mobile phone, tablet – the connection is via Wifi).

LaseTVM-M

The LaseTVM-3D-M (Motion) system is used for dynamic measurements of moving trucks. Two LASE2000D-118 2D laser scanners are used for dynamic volume measurement. These high-precision sensors allow an exact measurement of the bulk material volume hauled by the truck. The sensors send the measured data to an evaluation unit on which the software for calculating the volume operates. Sensors are mounted on a portal or a pillar with a jib/ boom, at a height of approx. 7 m, depends on location and truck size.

When the truck drives through the measuring portal, one 2D laser scanner is responsible for positioning the truck and the loading area and the second 2D laser scanner measures the profile of the vehicle at a right angles to the direction of travel. By combining the two laser scanners’ measured data, a 3D profile of the vehicles is generated. The measurement always takes place in two steps: an empty 3D profile measurement and a fully loaded 3D profile measurement. The difference between the two measurements result in the volume of the bulk material carried by the truck. Several measuring stations can also work together. A full and empty measurement at different locations is possible. It is also possible to save the empty profiles for a vehicle, so that only the full measurements have to be made afterwards. By measuring the empty truck cost intense “carry back” can be avoided.