Device for measurement of road geometrical parameters
The stages and principles of developing a device for measuring the geometric parameters of the road and calculating the IRI. Justification of the block diagram, element base, test board and verification of the operating characteristics of the sensors.
| Рубрика | Строительство и архитектура |
| Вид | статья |
| Язык | английский |
| Дата добавления | 17.02.2019 |
| Размер файла | 298,7 K |
Отправить свою хорошую работу в базу знаний просто. Используйте форму, расположенную ниже
Студенты, аспиранты, молодые ученые, использующие базу знаний в своей учебе и работе, будут вам очень благодарны.
Размещено на http://www.allbest.ru/
Размещено на http://www.allbest.ru/
Device for measurement of road geometrical parameters
The road industry is very important in Russian economics. Now Russia has a road network with total length of 1.4 million km and takes 5th place in the world. It causes many difficulties with diagnostics, repairs, upgrading and it forces to use advanced technologies. In the order of Russian Ministry of Transport number 150 from 2009 rights of road diagnostics are defined. Measured parameters include:
• ups and downs length
• longitudinal and transverse slopes
• straight length, number of angles and radius values
• longitudinal profile and International Roughness Index
The second important task is creating of modern databases and electronic document management. In the document 2.10-2015 Russian state company «STO AVTODOR» set the requirements to road passport which contains all above parameters. For example longitudinal slope is needed for traffic management and installing road signs. Transverse slope is provided to eliminate water accumulation.
For all these reasons the task to develop a device to measure geometric parameters of road is now actual. The figure shows proposed structural scheme of this device.
The main measuring unit is multifunctional inertial sensor GKV-11 which is produced by «ООО Laboratoriya micropriborov». It includes 3-axis gyroscope and accelerometer, GNSS receiver and computational core. Sensor can measure up to 20 parameters at the same time including angles, angular velocity and acceleration with speed up to 24 kHz. It also can correct results by GNSS data. Second sensor is laser triangulation distance meter RF-603 which is produced by Belorussian company «RIFTECH». It's necessary for build the road profile. Measuring range is from 125 to 625 mm at speed up to 9.4 kHz. The sensors are connected to MCU through RS-485 drivers. Odometer data is also read to increase accuracy. MCU provides primary processing and sends data to personal computer or laptop which is installed in laboratory-car. Any high speed MCU from family STM32 can be applied.
To measure the sensors performance a test board has been created. It consists of STM32F103 evaluation module, ENC28J60 network controller and ADM485 drivers. This configuration provides at least 1 kHz sensor polling speed and allows getting road profile and geometrical data with interval 2.5 centimeters at car speed 90 km/h, that is more than enough for IRI calculation (profile must be built with interval 25 centimeters and less) and another data. Polling speed can be increased using faster MCU (for example STM32f4 series) and another network controller.
Next step of this developing will be profile building algorithm and IRI calculation implementation, which has been described in document STO MADI 02066517.1-2006. It is also necessary to create PC software with user-friendly GUI which will provide configuration, measurements and data storage. The final result of measurement will be two data sets in file format of table processor (Microsoft Excel and others). The first file contains geometrical and navigation data measured with interval 5 m. The second one contains IRI calculated for each kilometer of the road and navigation data also.
Literature
geometric road sensor
1. http://www.russianhighways.ru/about/brand/STO_AVTODOR_2_10_2015.pdf
2. http://vvww.rosavtodor.ru/eye/page/81/14631
Размещено на Allbest.ru
Подобные документы
A beam is a structural element that is capable of withstanding load primarily by resisting bending. Internally, beams experience compressive, tensile and shear stresses as a result of the loads applied to them. Thin walled beams. Mechanical beam quality.
презентация [101,4 K], добавлен 21.11.2013Characteristics of the plot and area for reconstruction with the addition of the attic floor of a public building on Slastiona Street 3 in Lviv. Construction of the architectural part. List of mounting elements in the construction of the building.
дипломная работа [2,0 M], добавлен 04.06.2022Study of synthetic properties of magnetic nanoparticles. Investigation of X-ray diffraction and transmission electron microscopy of geometrical parameters and super conducting quantum interference device magnetometry of magnetic characterization.
реферат [857,0 K], добавлен 25.06.2010Device, constructive – technological features, circuit of insert. Conditions of insert of the transistor. Static parameters. Physical processes. Differential coefficient of transmission of a current. Condition a splitting contact. Condition of saturation.
курсовая работа [129,2 K], добавлен 27.01.2003The general law of circulation change across blade height. Determination of the axial turbine stages geometrical dimensions. Turbine stage calculation on the middle radius. Cinematic parameters determination on different turbine stage radiuses.
методичка [412,3 K], добавлен 26.05.2012Description and operating principles of Air-Conditioning System of Tu-154. Principal scheme of ACS. Theoretical base of algorithm developing process. Functions of the system failures. Description of obtained algorithm of malfunctions discovering.
курсовая работа [27,7 K], добавлен 01.06.2009Определение и характеристика особенностей джип-туров. Общая характеристика региона Хакасия и разработка нового туристического продукта "Хакасия off Road". Анализ района путешествия, разработка программы обслуживания, расчет стоимости и продвижение тура.
курсовая работа [739,2 K], добавлен 07.06.2012The basic principles and the protection of power lines patterns used in this process methods. Physical basics of high-power transformers in substations. Justification of the information received. Diagram illustrating the operation of the protection.
презентация [628,0 K], добавлен 18.02.2016Technical and economic characteristics of medical institutions. Development of an automation project. Justification of the methods of calculating cost-effectiveness. General information about health and organization safety. Providing electrical safety.
дипломная работа [3,7 M], добавлен 14.05.2014Characteristics of the main two-dimensional, three-dimensional and n-dimensional geometric shapes, their use in mathematics, physics and other. Properties of two-dimensional geometric shapes arranged on the plane: polygon, triangle, quadrilateral, circle.
топик [251,8 K], добавлен 21.12.2013
