Overview

Measurement work

3D Laser Scanner Measurement

Key Features and Capabilities

  • Drastic reduction in project timelines
  • Substantial reduction in labor costs and personnel expenses
  • Enables data collection from safe vantage points, even in hazardous or restricted-access zones
  • High-precision modeling of terrain and structures down to the finest details significantly elevates data quality and reliability
  • Eliminates the need for on-site re-surveys resulting from design changes
  • Enables XNUMX/XNUMX surveying and data acquisition, regardless of lighting conditions
  • Full readiness for rapid response and support during disasters or other emergency situations

Scope of use

  • Longitudinal and transverse section surveying, earthwork volume management, and preparation of general drawings for earthwork sections
  • Condition assessment and deterioration survey for buildings and infrastructure
  • Measurement of localized road surface subsidence and pavement overlays
  • Surveying and measurement for agricultural land development and farmland consolidation projects
  • Geometric and as-built measurement for infrastructure such as tunnels, bridges, and dams, including the preparation of general drawings
  • Safe, non-contact measurement in inaccessible locations, such as disaster-stricken areas and steep rocky slopes
  • XNUMXD digitizing and drawing generation for legacy structures with missing construction plans
  • Preserving history for the future: Digitizing and archiving significant cultural properties to ensure their legacy is passed down to generations to come

Example

Bridge Pier Measurement

We measure the entire target from multiple locations to ensure comprehensive coverage. The acquired point cloud data and generated 3D models can be utilized for various purposes, including presentations, simulations, site assessments, and long-term maintenance management.

Tunnel Measurement

As part of our maintenance and management services for underground drainage tunnels, we conducted high-precision 3D measurements to create detailed as-built drawings. The images showcase the resulting point cloud data: the tunnel entrance (left) and a comprehensive view of the entire structure (center and right), providing a clear and complete visualization of the site's current condition.

River Measurement

We capture high-density point cloud data of river environments using 3D laser scanners. To ensure maximum accuracy, measurements are conducted from multiple vantage points. After cleaning the data to remove obstacles such as vegetation, we process the point clouds into 3D meshes. This allows for the instantaneous generation of longitudinal and cross-sectional profiles, as well as topographic maps, in various standard CAD software with simple mouse operations.

Railway Measurement

We utilize terrestrial 3D laser scanners alongside mobile-mounted 3D scanning systems (Proscan) to perform high-precision measurements of entire, complex railway station facilities.
Our data supports a wide range of applications, including site condition assessment, as-built management, and construction simulation using 3D models

Measurement of restricted areas

Even in challenging environments where direct measurement is difficult—such as disaster sites, restricted areas, or steep slopes—3D laser scanners enable data collection from a safe distance。

Other

It can measure a variety of objects, from intersections to Buddha statues.

Small Unmanned Aerial Vehicle (UAV)

Utilizing Unmanned Aerial Vehicles (UAVs), commonly known as drones, we capture imagery in locations inaccessible to humans and provide panoramic photography across expansive areas.

By merging multiple image captures into a unified dataset, we generate accurate 1D models that can be seamlessly integrated into CAD environments for detailed drawing and design work.

Example

Natural Disaster Investigation

Even at landslide sites in mountainous regions with elevation differences exceeding 100 meters, we can capture high-resolution imagery in locations completely inaccessible to personnel. Furthermore, we can efficiently perform panoramic photography across ranges of several hundred meters and synthesize the data into comprehensive views.

3D Processing of Orthomosaic Images

Multiple image datasets acquired by small Unmanned Aerial Vehicles (UAVs) are corrected and merged through orthomosaic processing to create a single, unified dataset. Subsequently, 1D reconstruction is performed to generate detailed 3D models.

3D Planning (Precise Calculation of Planning Influence Lines)

Edited 3D data is imported into general-purpose CAD software to develop alignment, longitudinal, and cross-sectional plans. These plans are then integrated to automatically generate the horizontal design, clearly defining the precise impact lines for cut and fill. Furthermore, as all design elements are dynamically linked, any modifications made to a specific part will automatically update all related plans, ensuring seamless and efficient revisions.

3D Side Scan Sonar (C3D)

Utilizing ultrasonic technology, we can perform 5D measurements of seabed topography across depths ranging from shallow 300-meter waters to as deep as XNUMX meters. Equipped with integrated GPS for precise positioning, our system enables high-resolution XNUMXD visualization of underwater terrain.

While this method requires a crew of at least two members for boat-towing operations, it significantly reduces the on-site workload compared to conventional bathymetric surveying.

Features

sounding

  • Our system is capable of performing depth sounding and measuring underwater topography and submerged structures in intermediate depths of up to 300 meters
  • Capable of acquiring data in shallow water zones (ranging from 5m to 20m)
  • Enables wide-swath measurements, covering an area approximately 10 to 12 times the water depth
  • Enables measurement in locations where survey lines are restricted or limited
  • Equipped with a 6-transducer array, our system enables high-resolution and wide-area measurements
  • Our technology enables high-resolution 3D visualization by utilizing the CATTI algorithm to calculate both the Angle of Arrival (AoA) and range measurements
  • Equipped with integrated GPS, the system enables precise position measurement and geospatial data acquisition
  • Depth sounding is not possible for water depths of less than 5 meters
  • Requires boat-towing with a minimum of two operators for deployment and data collection

Steps to follow

  • Our method significantly reduces on-site workload compared to conventional bathymetric surveying, leading to substantial cost savings
  • Enables precise measurement along shorelines and coastal edges
  • Our system is also capable of surveying man-made structures, such as quays, wharves, and revetments
  • Suitable for hydrographic survey work (Japan Coast Guard Notification No. 102, 2002, Appendix 2)
  • Registered with NETIS (Ministry of Land, Infrastructure, Transport and Tourism New Technology Information)

Autonomous Unmanned Boat (RC-S2)

Introducing the RC-S2, an autonomous Unmanned Surface Vehicle (USV) powered by GPS. Equipped with integrated GPS and sonar, it enables continuous measurement of both position and water depth in shallow waters ranging from 0.5m to 80m.

No boat operator's license is required, allowing for efficient single-person operation from the shore. Furthermore, the built-in automatic return-to-home function ensures the vessel safely returns to its launch point in the event of maneuvering difficulties.

Features

sounding

  • Equipped with integrated GPS and sonar, the system enables continuous and simultaneous measurement of both position and water depth
  • Capable of acquiring data in shallow water zones, covering depths from 0.5m to 80m
  • Capable of depth sounding even in open sea conditions, utilizing heave sensors for motion compensation
  • Acquires high-precision positioning data utilizing VRS (Virtual Reference Station) technology
  • Not suitable for measurements in areas where GPS signals are unavailable or obstructed

Running

  • Enables autonomous programmed navigation by pre-defining the travel route, making it ideal for periodic cross-sectional surveying
  • Can be driven alone
  • No boat operator's license is required for operation. The system features a Wireless LAN connection with a data acquisition and control range of up to 500 meters
  • Equipped with an automatic return-to-home (RTH) function, the vessel will autonomously return to its starting position should maneuvering become difficult or control be compromised
  • Not suitable for measurements in river basins or areas with excessively high flow velocities

Steps to follow

  • Enables a significant reduction in preparation and setup time
  • Ensures operator safety by enabling full operational control from the shore
  • Environmentally friendly design utilizing an electric motor
  • Can be carried by one person (W: 9.3kg / L: 1.60mm / B: 270mm)
  • Registered with NETIS (Ministry of Land, Infrastructure, Transport and Tourism New Technology Information)

PC screen

making the plan

Non-contact Vibration Measurement for Structural Diagnosis (U-Doppler)

U-Doppler utilizes laser technology to perform non-contact measurements of natural frequencies and deflections in large-scale structures, including viaducts, bridge piers, building facades, catenary lines, and various industrial equipment.

Featuring a compact design for easy portability, the system also supports long-range measurements from 1m to 100m, making it ideal for large-scale structures.

In contrast to conventional methods that involve time-consuming and costly installation and removal of high-sensitivity sensors, our system enables easy, non-contact vibration measurement.

Features

  • Compact and highly portable. The sensor unit features a high-density integrated design, combining optical systems and electrical circuitry into a single body. Optimized for outdoor use, the entire miniaturized system is housed in a dedicated carrying case for maximum mobility.
  • Supports long-range measurements from approximately 1m to 100m. Specifically engineered for large-scale structures, the system features an adjustable focal length optimized for these extensive distances.
  • Battery-powered for remote locations without AC power. Designed primarily for outdoor use, the system features a built-in rechargeable battery that provides approximately 8 hours of continuous measurement.
  • Equipped with integrated data acquisition and analysis software, the system enables immediate, on-site data processing and evaluation at the measurement location.

Differences From Conventional Methods

Traditionally, vibration measurement for large-scale structures was a labor-intensive process, requiring significant time for the installation and removal of high-sensitivity sensors. To address these challenges, we have adopted 'U-Doppler,' a state-of-the-art non-contact vibration measurement system for structural diagnosis. This system utilizes advanced laser technology to measure ambient vibrations (microtremors) remotely, ensuring a faster and more efficient diagnostic workflow.

U-Doppler enables non-contact measurement of structural vibrations. It is an ideal solution for routine maintenance inspections as well as rapid damage detection following natural disasters.

Scope of application

U-Doppler is capable of measuring the natural frequencies of large-scale structures, including viaducts, bridge piers, building facades, catenary lines, and various industrial equipment. Additionally, it can measure the deflection of structures such as bridge girders.

Scope of application

U-Doppler is capable of measuring the natural frequencies of large-scale structures, including viaducts, bridge piers, building facades, catenary lines, and various industrial equipment. Additionally, it can measure the deflection of structures such as bridge girders.

Deflection measurement of PC girders

Measuring bridge girder deflection

Structural deflection measurement

Steel track girder deflection measurement

Measuring overhead line poles

Vibration measurement of rock slopes

Vibration measurement of Shinkansen viaduct

Measurement diagnosis screen

Ultra-high Precision 3D Monitoring Measurement (Mammoth)

Features

  • Monmos provides continuous monitoring and observation of pre-determined target points. It enables real-time tracking and progress checks of structural or ground status at any time.
  • It helps to shorten construction time and reduce costs.

The Need for Monitoring Work

Disaster prevention and slope construction

  1. Slope reinforcement measures
    Dynamic observation during slope excavation
  2. Dam construction
    Observation of dam body deformation
    (arch dam, rockfill dam)

Tunnel construction

  1. Inner space displacement measurement
    Displacement measurement inside a tunnel
  2. Inner cross section measurement
    Understanding tunnel cross-sectional shape
  3. Ground surface displacement measurement tunnel at the tunnel entrance
    Monitoring landslides at mineheads

Overview

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