High-precision laser distance sensors for early detection of ceiling deformation in tunnels with beams.
By using high-precision laser distance sensors for the early detection of ceiling deformations in tunnels with beams, the number of total stations can be reduced.
As part of the construction work at the main station in Bern, the capital of Switzerland, we received an inquiry from a certain engineering office. Objective: Early detection of ceiling deformation in tunnels with beams In a typical tunnel, a fixed total station is used to regularly measure the positions of numerous reflective prisms installed on the tunnel ceiling. However, in tunnels where beams are installed between the ground and the ceiling, visibility is restricted, requiring more total stations than usual. Solution: Implement a two-step measurement method Step 1: Use our laser distance sensor to measure the distance between the beams and the tunnel ceiling. Step 2: Use a total station to measure the position of the ceiling beams. By simultaneously utilizing a distance measuring sensor for the challenging measurements from the beams to the ceiling, we were able to monitor 20 tunnel cross-sections with just 4 total stations instead of the usual 20, resulting in significant cost savings. The project was quickly realized thanks to the specialized support from the manufacturer.
basic information
The "D-series" is a high-precision laser distance sensor that achieves high-speed measurement at 250Hz. This product complies with IP65 standards and can measure in environments ranging from -40°C to +60°C. Furthermore, it can connect up to 99 units simultaneously (RS422/RS485). There are a total of 8 types. Standard accuracy (2σ): ±1mm to ±5mm Repeatability accuracy (2σ): ±0.3mm to ±1.8mm Measurement distance: 0.05 to 100m (using a reflector <500m) Measurement speed: 10 to 250Hz Measurement temperature range: -40°C to +60°C Waterproof rating: IP65 Dimensions: 140 x 78 x 48mm Weight: 350g Interface: Analog, RS232C, RS422/RS485, SSI, etc. For more details, please refer to the product catalog. Our company provides comprehensive technical support, including usage instructions, implementation, control software development, and post-installation support. If you have any concerns, please feel free to contact us.
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Applications/Examples of results
Tunnel interior displacement measurement, caisson measurement, large cranes, heavy load transport overhead cranes, snow measurement, silo content measurement, railway tunnel construction limit measurement, automated warehouse, etc.
