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Método y equipo para analizar perfiles longitudinales de la carretera en régimen dinámico

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TORO20160324001
Publicado:
28/04/2016
Caducidad:
28/04/2017
Resumen:
Un instituto de investigación rumano ha desarrollado un método y equipo para analizar el perfil longitudinal de carreteras y autopistas en régimen dinámico. Este sistema se empleará para determinar la uniformidad longitudinal, una de las características funcionales de la estructura de la carretera relacionadas con la seguridad en la circulación. Una de las novedades de este equipo es la posibilidad de calcular el índice de regularidad internacional (IRI), cuyo valor es totalmente independiente de los desplazamientos verticales del vehículo experimental. El instituto busca universidades o centros de investigación con el fin de establecer acuerdos de investigación y cooperación técnica, así como pymes del mismo sector para alcanzar acuerdos de fabricación.


Details

Tittle:
Method and equipment for testing road longitudinal profiles in dynamic regime
Summary:
A Romanian research institute has developed a method and an equipment for testing, in dynamic regime, the longitudinal profile of the road and highway pavements.The proposed system will be used for the determination of the longitudinal uniformity. The targeted partners are universities or research institutes for establishing research and technical cooperation agreements or SME´s from the same field of activity, for manufacturing agreements.
Description:
A Romanian research institute has developed a method and equipment for testing the road longitudinal profiles in dynamic regime.
The proposed system will be used for the determination of the longitudinal uniformity-one of the functional characteristics of the road structures involved in the safety of the circulation.
This method consists of: the displacement on the tested pavement of a lab vehicle (VL) on whose lateral side a couple of two laser sources (SL I, SL II) is mounted; a continuous emission type and a video camera (VC) placed in line with the laser sources exactly at the middle of the distance (A) between these sources. Distance (A) is equal with the sampling distance imposed by the evaluation norms of the road longitudinal profile uniformity. The line scan video camera (VC) must be parallel with the laser beams (FL I) and (FL II), which are perpendicularly oriented to the pavement surface (PL).
The start of a sequence for the measurements simultaneously carried out by the two above mentioned sensors is achieved at the external command delivered by a vehicle displacement transducer every time when this vehicle has moved along distance (A).
The processing of the acquired data must begin with the extraction from each image received by the video camera with line type CMOS (Complementary Metal-Oxide Semiconductor) sensor, of the current ordinate that corresponds to the pixel that has received the laser source image reflected by the pavement. This thing can be achieved through a software application aimed for detecting the maximum illuminated pixel from the respective line. The program is also taking into account the wavelengths of the used laser beam (FL).
On the basis of the data acquired in this mode it is possible to calculate both the variation of the road profile elevation and the lab vehicle own vertical displacement, in the frame of every measurement sequence.
The Romanian institute is considering partnerships such as manufacturing agreements with SMEs willing to introduce the method and equipment for testing road longitudinal profiles in dynamic regime in the manufacturing process developed; research and technical cooperation with universities, research institutes and SMEs, in order to develop new applications or for testing this method in laboratory and in real conditions.
Advantages and Innovations:
The equipment has a relative simple construction. One of the innovations of this proposed equipment is that it assures the possibility to calculate the IRI (International Roughness Index), whose value is totally independent from the own vertical displacements of the lab vehicle, on the basis of the relative ordinates yi, which are constituting, each one, the elevation variation of the road profile in the frame of a measurement sequence.
One of the advantages that this equipment brings, compared to other technologies, is that due to the fact that the line type video camera is functioning as a rule with high scanning frequencies, the equipment in conformity with the invention has the possibility to effectuate the acquiring of the road longitudinal profile also in the conditions in which the lab vehicle is displacing with the admitted speed on the respective road.
Stage of Development:
Prototype available for demonstration
IPs:
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
Patent applied for at the National Office for Patents and Trademarks (Romania)

Partner sought

Type and Role of Partner Sought:
The research institute is looking for partner(s) such as:
-universities and research institutes, in order to establish research and technical cooperation agreements for a) developing new applications and b) testing this method in laboratory and in real conditions;
-SMEs, for manufacturing agreements (for introducing the method and equipment for testing the road longitudinal profiles in dynamic regime in the manufacturing process).

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English

Keywords

Technology Keywords:
01004003 Applications for Transport and Logistics
01002003 Electronic engineering
01002008 Optical Networks and Systems
01001002 Sistemas digitales, representación digital