41 results about "Road surveying" patented technology

The invention provides a road surveying and mapping method and a road surveying and mapping system. The method comprises the steps of enabling the original data of all vehicles acquired by location to form a single vehicle track set within a preset time period; carrying out road matching by the single vehicle track set and a spatial index established according to the road segment data of a base road network; carrying out correlation analysis on the single vehicle tracks which are not successfully matched according to the areas to confirm the relevant combinations as well as the fitted curves and the road grades of the relevant combinations; supplementing the road segment data of the base road network by the possibly missing roads confirmed according to the fitted curves and the road grades to form the road surveying and mapping result. The actual driving single vehicle tracks of the vehicles are matched with the existing base road network, the possibly missing rods can be obtained by the correlation analysis mass of single vehicle tracks, and the road segment data of the base road network is supplemented by the possibly missing rods; the method and the system are shorter in surveying and mapping period, controllable in surveying and mapping replacement cycle, high in accuracy of surveying and mapping result and timely in data updating.

An attachment system is provided for attaching an external component to a chassis of a vehicle, such as components for performing snow clearance, road measurements, road surface marking assemblies, transport of vehicles or gear, including salvaging work and transport of heavy duty vehicles. The attachment system includes at least an elongated chassis coupler element, a fastening mechanism for fastening the chassis coupler element to the chassis when in a mounted position, a distance element, and a clamping mechanism. The coupler element is shaped to fit inside a hollow space of the distance element, and the clamping mechanism is operable to control an insertion length of the coupler element into the hollow space thereby controlling the clamping of the distance element and the chassis when the attachment device is in a mounted position.

The invention discloses a road surveying and design method based on high-resolution satellite images. The steps are: A. According to the route plan, determine the range to be covered by satellite images, select high-resolution satellites and sensors for collection, and design high-resolution satellites Stereoscopic image acquisition. B. When the results with a scale of 1:2,000 are generated, the field ground control point layout and measurement are carried out, and the control points are laid out along the route. C. Based on the rational polynomial parameters of high-resolution satellite images, the block adjustment of high-resolution satellite stereoscopic images is carried out, and the digital ground model, digital orthophoto map and digital line-drawing topographic map of the highway route area are generated. D. Collaborative design of high-resolution satellite survey and highway CAD, calculate the quantity of the project, and generate route design diagrams and tables. The invention realizes the collaborative design of high-resolution satellite measurement and road CAD, greatly reduces the workload in the field, greatly shortens the survey and design cycle, and has remarkable economic and social benefits.

The invention discloses a road construction level device on the basis of AGPS positioning and a measurement method. The level device includes a first receiver and a second receiver, which are connected to a resolver via optical cables in order to acquire a series of positioning time-GPS positioning height information and positioning time-cellular mobile positioning height information in unit time;then a fixing frame settlement curve is acquired; the initial point of the fixing frame settlement curve is set as a height position of a road measurement point. By means of GPS, two ends of a road are positioned; before the GPS positioning, a cellular mobile network is used for crude positioning in order to acquire an approximate position; then according to positioning satellite map, selecting aproper positioning satellite for localization; during the process, the cellular mobile network synchronously works, so that height values obtained through the two positioning process are fitted withthe correspondence of positioning to obtain a function curve; furthermore, comparison is carried out to obtain a precise height value of the measurement point. The slope of the road is acquired by theheights of the two end points without limitation by visibility range.

The invention relates to an underground environment perspective three-dimensional model establishment method based on a vehicle-mounted three-dimensional ground penetrating radar and a road surveying and mapping technology. Compared with the prior art, the provided method enables a defect that the geological radar can not establish a perspective three-dimensional model for a detection result to be overcome. The method comprises the following steps: step one, carrying out underground environment situation data collection; to be specific, collecting geological conditions information of an underground environment by using a vehicle-mounted three-dimensional ground penetrating radar and establishing a detection abnormity model primarily by using a data extraction technique; step two, carrying out road information collection; to be specific, measuring a coordinate and elevation of road pavement information by means of surveying and measuring and establishing a road pavement model; and step three, establishing a perspective three-dimensional model of a road underground environment detection result and inputting the detection abnormity model into the road pavement model according to coordinate information, thereby forming a perspective three-dimensional model of the underground environment. Therefore, the result of three-dimensional ground penetrating radar detection is converted into the needed three-dimensional model, thereby forming the perspective three-dimensional model of the underground detection result.