1. 2D auxiliary mining system is divided into 2D common system and 2D evolutionary system
Common 2D system only contains some angle sensors to calculate the working attitude of excavator, so it is necessary for engineers to carry out professional datum positioning and engineering lofting to assist construction work. But the cost is low. In some small construction projects more applications.
Evolutionary 2D system calibrates position information by installing laser receiving device or sonar receiving device and laser instrument or sonar transmitting base station outside vehicle. Because the sonar is based on the calculation of the relative plane, the smoothness of the construction surface will change with the relative plane. Therefore, the sonar 2D system is more suitable for the construction of road surface, and the laser 2D system realizes the vehicle position calculation by the laser transmitting device installed outside the vehicle and the laser receiver above the vehicle. Laser positioning is absolute plane positioning, so it is more suitable for slope repair and ditch construction.
2. 3D auxiliary mining control system evolved from 2D system
3D system is divided into satellite positioning system and laser or visible beam positioning system according to the location source. The satellite positioning system is suitable for the open construction area, which requires that the signal intensity of the positioning satellite can meet the positioning requirements. The system receives satellite positioning information according to the satellite signal on the excavator GNSS the receiver and the GNSS satellite receiver on the external base station, thus obtaining the position information. At the same time, the system can calculate the position coordinates of the vehicle in the construction area in real time by using the real-time dynamic carrier phase technology of the RTK(Real-time kinematic) by installing two different satellite positioners on the excavator. Combined with the position and attitude of the excavator, the system can determine the construction target position in real time and dynamically according to the engineering drawing of the system in advance, so as to achieve the efficient construction purpose.