ROMDAS Laser Profilometer

We now have a Laser Profilometer for road roughness fully integrated into the ROMDAS Data Collection software. The ROMDAS Laser System is low cost and can be run simultaneously with all other ROMDAS instruments like GPS, Video, Rut Depth with TPL etc. The ROMDAS Laser is an intelligent transducer specifically intended to measure road surface profile and optionally road texture characteristics.

• For roughness the laser samples at 16kHz, reporting elevation values at 37.5mm intervals.

• The Laser is designed specifically for road measurement applications.  The dynamic range is a large ± 128mm, important to prevent data clipping due to suspension movement.

• Triple high speed Analogue to Digital Converters are used with high 16-bit resolution – as opposed to 12 or 14-bit.

• There is no skew between channels during sampling – channels are sampled simultaneously.

• Data is converted directly to digital data within the laser and remains digital throughout the processing stages, thus eliminating the problems of noise due to lengthy cable runs carrying analogue data. Data output is via Ethernet networking. for easy connection of multiple lasers through standard Ethernet hub to computer running ROMDAS software

• Data all fully controlled from ROMDAS software so can be used simultaneously with other ROMDAS instruments like GPS, Video, Rut Depth with TPL etc. Also only one calibration required for distance measurement instrument (DMI) for both Laser input and ROMDAS.

• Laser Safety features include - Mechanical shutter  to isolate the laser beam - Keyed switch to power Laser - Configurable low speed cut-off to laser activation input

For more information contact info@romdas.com

ROMDAS for Windows Data Collection Software

The current version of ROMDAS for Windows is v2.20. This version now supports the ROMDAS Laser Profilometer and Transverse Profile Logger (TPL). There is also many improvements in the video logging software.  All current users of ROMDAS for Windows software can upgrade for free. Software upgrade costs for existing ROMDAS MS-DOS version users are below ( with a maximum upgrade cost of $NZ 5000) Roughness/LRP/Keycode $NZ 2,000 GPS – Basic $NZ 500 GPS – Trimble Logging $NZ 1,000 Transverse Profile Logging $NZ 1,500 Video – Direct Digitising $NZ 2,000 Version 2.20 can be downloaded now from the ROMDAS website http://www.romdas.com/downloads/down_dcs.htm. It will run in evaluation mode for 30 days.  ROMDAS Location Referencing and Condition Survey - Cambodia The Ministry of Public Works and Transport, Cambodia has commissioned the "Location Referencing and Condition Survey (LRCS)" project in September 2003 with World Bank assistance. The LRCS aims to collect basic planning data on the National and Provincial road network for deploying a geo-database for a road decision support system. This database will enable long-term strategic planning, medium-term maintenance programming, and preliminary project analysis of the Kingdom’s road network through full integration with the Highway Development & Management model (HDM-4) and the Roads Economic Decision model (RED). Considering the accuracy and cost  requirements of the data collection, the consultant has chosen to use the ROad Measurement Data Acquisition (ROMDAS) System, HDM Information Management System (HIMS) and ESRI's Arc View v8.3 to best meet these needs. The data items collected under this project include: Location referencing  Road inventory  Pavement condition  Roughness  Bridge and culverts inventory  Digital video and photos  GPS centerline coordinates  Traffic volume  Axle loading  Travel time and speed  Accident information All chainages are measured to an accuracy of 0.1 m per 100 m (0.1%) or better using a Distance Measurement Instrument (DMI) provided with ROMDAS. The centerline GPS coordinates are differentially corrected (95% ± 1.0 meter horizontal and vertical accuracy, or better) provided in the WGS84 mapping coordinate system with ROMDAS GPS system. All other data items are measured based on the World Bank's Information Quality Levels (IQL). The TOR specifies that IQL-4 be adopted on unpaved roads, and IQL-3 for paved roads. The main output from the study will be the creation of a Road Database containing information on location referencing, inventory, condition and traffic. The database will be tested to ensure that RED and HDM 4 can be utilised with the data collected. HIMS is used for data management, analysis and reporting. The open system architecture of the HIMS allowed for easy interfacing with HDM-4 and RED in the project.  For more information on this project please contact: Raj Mallela, Data Quality, System Design and HDM-4 Specialist raj@dcl.co.nz

Website Updates The following items have been recently updated in the download section of the ROMDAS website Document Version Date Size Manuals, Installation Guide and Catalogue  ROMDAS for Windows Data Collection Software User's Guide 1.2 28/1/04 8836 ROMDAS Z-250 Reference Profiler User's Guide 1.4 04/02/04 4203 ROMDAS Catalogue February04 04/02/04 1099  Recent Sales In the last 3 months we have sold systems to Bangladesh, Ecuador, Laos, Cambodia and Spain. ROMDAS systems have now been supplied to over 50 different countries around the world  North American Sales North American ROMDAS sales and support are handled by Jerry James.