Lambda Innovision Inc.

Jong Pil La

Ji Eun Choi

Disclosed are a device and system for detecting ground subsidence by using a LiDAR technology. The system for detecting ground subsidence, which detects whether the ground has subsided within an area where the subsidence of the ground will be examined includes at least two reflection units installed in a structure disposed within an area where the subsidence of a ground will be examined and each configured to reflect light incident thereon, and a LiDAR device disposed within a preset radius from the structure and configured to detect whether the ground has subsided and the extent of the ground subsidence based on a distance difference between the LiDAR device and each of the reflection units.

System for detecting ground subsidence using LiDAR technology

A laser generation apparatus includes a light source making oscillate a laser having a frequency based on the amount of current applied thereto, a splitter ramifying a laser incident thereon at a preset ratio, an interference system receiving the ramified laser, generating an interference signal by ramifying a laser incident thereon, and measuring the phase of a laser oscillated, a temperature adjustment unit uniformly maintaining a temperature of a part of the interference system, an error integrator receiving a signal that has undergone the interference system and accumulating a phase error occurred, a phase error detection unit detecting a phase difference between the signal of the error integrator and an offset current value, a driving driver applying a current to the light source, and a control unit controlling an operation of each component and controlling the driving driver based on results of the detection of the phase error detection unit.

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Hwaseong-si, South Korea

Jong Pil La