总站

Total station is a kind of high-tech measuring instrument integrating light, machine and electricity. It is a surveying and mapping instrument system integrating the functions of horizontal angle, vertical angle, distance (oblique distance, horizontal distance) and height difference measurement. Compared with the optical theodolite, the electronic theodolite changes the optical dial into the photoelectric scanning dial, and replaces the artificial optical micrometer reading with the automatic recording and display reading, which simplifies the angle measurement operation and avoids the reading error. It is called total station because it can complete all the measurement work on the station by placing the instrument at one time. It is widely used in the field of precise engineering measurement or deformation monitoring, such as large-scale buildings on the ground and underground tunnel construction.