CN105239493A - Road roller positioning device and road roller positioning method based on centimeter grade - Google Patents

Abstract

The invention discloses a centimeter-level road roller positioning device in the construction process of asphalt pavement, which includes a reference station, a mobile station and a server. The reference station is to place the GPS device on a position with precise coordinates and known. The mobile station can be considered as a GPS device bound to the roller to be tested. The GPS device mainly includes a dual-frequency high-gain antenna, a mobile station , a differential antenna and a power line, the server is a large-capacity storage system capable of classifying and storing location data transmitted from the construction site. The present invention can obtain the precise position information of the road roller during asphalt pavement construction, so as to determine whether the road roller completes the rolling task according to the prescribed rolling program, thereby improving the compaction efficiency and ensuring the compaction quality.

Description

A centimeter-level roller positioning device and method

technical field

The invention relates to the traffic field, in particular to the technical field of asphalt pavement compaction control.

Background technique

Since the reform and opening up, with the prosperity and strength of our national economy, highway construction has also developed rapidly. In the construction of high-grade highways, asphalt pavement has been widely used because of its many advantages. As a kind of flexible pavement, asphalt pavement has the advantages of good flatness, no joints, short construction period, comfortable driving and low noise. Asphalt pavement accounts for a large proportion of high-grade pavement pavement in various countries in the world, and Will still maintain a large proportion of the development trend.

However, in recent years, with the rapid growth of traffic volume, overloading phenomenon often occurs, and the asphalt pavement built in our country will appear serious early damage phenomenon in just a few years of operation. A large number of investigations and studies have shown that the early damage of asphalt pavement is directly related to the compactness of the pavement. Insufficient compaction will cause the porosity of the road surface to be too large, and rainwater will easily seep into the interior of the road surface, causing early damage such as water damage and rutting; of course, the higher the degree of compaction, the better. If the rate becomes smaller or the mineral material is crushed, oil flooding and instability will occur. The occurrence of these early damages not only requires a lot of manpower, material and financial resources to repair, but more importantly, it will seriously affect the performance of the pavement.

With the improvement of people's requirements for road performance and the emphasis on road safety, the importance of asphalt pavement compaction has been re-recognized by everyone. A lot of research and practice have found that the quality of compaction and the compaction process have a great impact on the performance of the pavement. For a long time, my country has done a lot of research in the direction of asphalt pavement, focusing on the research and development of new materials and the design of new structures. There is relatively little research on the compaction process of asphalt pavement. At present, domestic research on asphalt mixture compaction technology is still immature. In order to meet the specified compaction requirements and ensure compaction quality, most of them determine a reasonable rolling procedure in combination with the paving of test roads. At the same time, for the compaction of asphalt pavement, most of the on-site construction personnel carry out rolling according to experience, which is relatively random, and often the road roller does not perform rolling according to the set speed and number of passes, which is different from the preset The rolling procedure does not comply, resulting in "overpressure" or "underpressure", which affects the compaction quality.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a positioning device based on a centimeter-level road roller, which is used to solve the problems caused by the randomness of the existing road surface compaction technology and the overpressure or underpressure of the road surface. Comes the technical problem of poor compaction quality.

Technical solutions:

In the process of asphalt pavement construction, in order to ensure that the pavement completes the specified number of rolling times according to the set rolling program within the effective time, it is necessary to measure the running track of the road roller. The determination of the position of the roller during asphalt pavement construction can provide technical support for monitoring the quality of asphalt pavement rolling, thereby satisfying the compactness of asphalt concrete pavement and improving the practical performance of the pavement. Therefore the present invention scheme sets out from this angle, specifically adopts following technical scheme:

A test device for the position of a road roller during asphalt pavement construction, including a reference station, a mobile station and a server. The reference station places the No. 1 GPS device on a location with precise and known coordinates, can receive satellites for carrier phase observation and can transmit the working conditions of the reference station through a data link; the mobile station is equipped with two No. GPS device and the mobile station is set on the road roller to be tested, it will carry out the difference between the received base station carrier phase and the received satellite carrier phase to realize the accurate positioning of the mobile station; the server is a large-capacity storage system, which can The location data transmitted from the field is classified and stored.

As a preference, the models of the No. 1 GPS and the No. 2 GPS in the present invention are K10 split-type dual-frequency RTK. It has high positioning accuracy, stable signal reception, and ultra-long-distance RTK operation technology, which breaks through the traditional RTK operation distance and exerts higher economic benefits.

Preferably, in the present invention, the data transmission equipment between the reference station and the mobile station adopts radio transmission technology. Built-in GM-46V radio station, external differential antenna, wide radio frequency range, fast wireless transmission rate, can quickly and effectively transmit working conditions.

Preferably, in the present invention, the data transmission equipment between the mobile station and the server adopts CDMA/3G network communication technology. The built-in CDMA/3G network communication module can send the differentially accurate gis data packets to the server through wireless communication technology.

As a preference, in the present invention, the server uses the spatial database postgres combined with ssd spatial storage and cluster optimization technologies to calculate and store a large amount of spatial gis geographic information in real time.

The positioning method of the above-mentioned positioning device comprises the following steps:

Step 1. According to the type of asphalt mixture to be paved, determine a reasonable rolling procedure and configure different types of road roller combinations;

Step 2. Select a suitable base station location near the road section to be paved, set up a K10 split-type dual-frequency RTK, set the working mode to "base station" mode, and complete the setting of each parameter correctly. The configured K10 split-type dual-frequency RTK Frequency RTK can enter the "base station" working state;

Step 3. According to the rolling program, determine that the road roller currently running is the road roller to be tested, bind a K10 split dual-frequency RTK to the road roller, and set the working mode of the K10 split dual-frequency RTK to "mobile Station" mode, and at the same time correctly complete the setting of each parameter, the configured mobile station can enter the working state;

Step 4. The mobile station receives the position information of the satellite and the reference station at the same time, and can obtain the accurate position data information of the road roller through processing, and transmit it to the server in real time;

Step 5. The server processes and stores the data transmitted from the site, and the user can query the real-time location information of the road roller at any time, and obtain the running track information of the road roller;

Step 6. By comparing the rolling program and the running track of the road roller, it is judged whether the construction process is carried out according to the rolling program, and the construction plan is adjusted in time.

Further, in the present invention, when collecting the location data of the road roller to be tested, the mobile station collects the location data every 5s, and at the same time sends a gis data packet to the background server every 5s. In order to ensure the real-time and accuracy of the acquired location information of the road roller, it is necessary to control the time interval of collecting data within a certain range.

Beneficial effect:

The present invention determines a reasonable rolling program according to the type of asphalt mixture, and uses the device and method of the present invention on the current paving road section to quickly and conveniently obtain the position information of the road roller to be tested by positioning the road roller in operation, and The accuracy reaches the centimeter level; secondly, the real-time location information of the road roller can be obtained continuously through the server to process and analyze the gis data packets sent from the site, and at the same time, by observing the rolling path of the road roller, one can understand the progress of the road roller during the construction process. Whether the rolling is carried out according to the rolling plan, grasp whether the rolling layer meets the specified compaction quality requirements, and once found that the place does not meet the requirements, remedial measures can be taken in time to effectively avoid the phenomenon of "overpressure" and "underpressure" Occurrence, to ensure the uniformity of asphalt pavement compaction, improve the efficiency of the entire compaction operation.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

FIG. 2 is a schematic structural diagram of a GPS device.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

A device for testing the position of a road roller during asphalt pavement construction, comprising a reference station 5, a mobile station 6 and a server 7. The GPS devices used on the reference station 5 and the mobile station 6 are K10 split dual-frequency RTK, and the devices mainly include a dual-frequency high-gain antenna 1, a mobile station 2, a differential antenna 3 and a power line 4. The mobile station 2 can be set to base station mode and mobile station mode respectively according to different functional requirements, and its built-in GM-46V receiving station and CDMA/3G network communication module can ensure effective data transmission between each part; the dual-frequency The high-gain antenna 1 is connected with the mobile station 2 for receiving satellite signals; the differential antenna 3 is connected with the mobile station 2, and when the mobile station is set on the reference station 5, the differential antenna is used to transmit the differential signal transmitted from the radio station The data is transmitted to the mobile station 6, which is used for the receiving antenna of the radio station when the mobile station is set on the mobile station 6; the power line 4 is mainly used to supply power to the GPS device. The server 7 uses the spatial database postgres and combines ssd spatial storage and cluster optimization technologies to calculate and store a large amount of spatial gis geographic information in real time.

The test device for the position of the roller, which achieves centimeter-level accuracy is based on the principle of real-time dynamic measurement. First, the GPS device on the reference station 5 continuously tracks and observes the visible satellites, and sends the observation data and station information to the mobile station 6 in real time through wireless transmission equipment. The wireless receiving equipment receives the data transmitted by the reference station 5, and then according to the principle of relative positioning, calculates in real time the three-dimensional coordinates and its accuracy when the GPS device on the mobile station 6 is located at each observation point, that is, the reference station 5 and the mobile station 6 The difference between the three-dimensional coordinates, plus the determined coordinates of the base station 5 itself to obtain the real-time WGS-84 latitude and longitude coordinates and geodetic height of each observation point, and then obtain the mobile station 6 located at each The centimeter-level plane coordinates at each observation point, and the processes of obtaining and converting the above-mentioned coordinates are all well-known methods in the industry.

A method for testing the position of a road roller during asphalt pavement construction, comprising the following steps:

Step 1. Because the rolling and forming of different asphalt mixtures requires different types of road roller combinations, it is first necessary to formulate a reasonable rolling program according to the type of asphalt mixture to be paved, so as to determine the road roller that needs precise positioning;

Step 2: Select a suitable base station 5 near the road to be paved, set up the K10 split dual-frequency RTK mobile station 2, and install and connect the booster antenna 1 and the radio differential antenna 3 as required, and set the working mode to "base station" The mode and data link are set to "UHF" data link mode, and the setting of each parameter is completed correctly. After the base station is configured, the current GPS coordinates of the base station can be obtained through automatic collection by the instrument;

Step 3. Bind a K10 split-type dual-frequency RTK to the roller to be tested, install and connect the gain antenna 1 and the radio differential antenna 3 as required, set the working mode to "mobile station" mode, and set the data link to "UHF" data link mode, at the same time, set the differential mode to "radio differential", and set the channel to be consistent with the base station. After completing the setting of each parameter correctly, it can enter the working state;

Step 4: The configured reference station 5 and mobile station 6 can enter the working state. The reference station 5 sends differential information to the mobile station 6 through the differential antenna 3, and the mobile station 6 receives satellites and reference signals simultaneously through the gain antenna 1 and the differential antenna 3. For the location information of station 5, the precise location data information of the roller can be obtained through differential processing, and the data is transmitted to the server 7 in real time through the network communication module; when collecting the location data of the roller to be tested, the mobile station 6 collects the location data every 5s , while sending a gis data packet to the background server 7 every 5s;

Step 5. The server 7 processes and stores the data transmitted from the site. The user can obtain the real-time location information of the current road roller at any time by querying, and at the same time obtain the running track of the road roller by calling the continuous location information in the database.

When installing a dual-band high-gain antenna, it must be erected as high as possible, and at the same time ensure that the installation location is as far away from electromagnetic wave interference as possible, and the interface between the antenna and the cable must be protected against water.

When installing the differential antenna, it must be erected as high as possible, and at least 5 meters away from the satellite receiving antenna as far as possible, and the installation location should be 200 meters away from interference sources, such as communication towers, high-voltage wires, etc.

When choosing a suitable location to set up a reference station, it should be satisfied that the elevation angle of the erection location is open above 15 degrees, there are no large obstructions, and there is no electromagnetic wave interference around, and there are no microwave stations, radar stations, mobile phone signal stations, etc. within 200 meters, within 50 meters There are no high-voltage lines, and at the same time, when using the radio station, it is best to ensure that there is no large-scale obstruction between the base station and the mobile station, otherwise the differential propagation distance will be shortened rapidly.

In order to ensure the accuracy of this positioning method, it is necessary to control the mobile station within the effective range of the base station. However, considering that road engineering is a linear project, and some roads extend for hundreds of kilometers, or even thousands of kilometers, the reference station also needs to change its position accordingly to ensure that the effective distance between the two. Therefore, in order to facilitate the rapid and effective replacement of the reference station and ensure the continuous and uninterrupted construction of the road project, it is recommended to install the GPS equipment required for the reference station on a vehicle in advance and complete the setting of various parameters. In the process of changing the position, you only need to drive the car to a suitable position, the base station will automatically reposition, and the whole system can continue to obtain position information.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (7)

1. based on a road roller positioner for Centimeter Level, it is characterized in that: comprise datum station (5), movement station (6) and server (7); Be provided with a GPS device in described datum station (5) and datum station is arranged on the position of known coordinate; No. two GPS device are provided with and movement station (7) is arranged on road roller to be measured in described movement station (7); Movement station (6) simultaneously receiving satellite signal and datum station (5) positional information thus road roller is located in real time; Described server (7) receives the real-time positioning information that movement station (6) transmits.

2. a kind of road roller positioner based on Centimeter Level according to claim 1, is characterized in that: the model of described GPS and No. two GPS is the split type double frequencies RTK of K10.

3. a kind of road roller positioner based on Centimeter Level according to claim 1, is characterized in that: the data between described datum station (5) and movement station (6) are transmitted by radio station transmission technology.

4. a kind of road roller positioner based on Centimeter Level according to claim 1, is characterized in that: the data between described movement station (6) and server (7) are transmitted by CDMA/3G network communications technology.

5. a kind of road roller positioner based on Centimeter Level according to claim 1, is characterized in that: described server (7) adopts spatial database postgres and stores and cluster optimization in conjunction with ssd space.

6. based on a localization method for the road roller of Centimeter Level, it is characterized in that: comprise the following steps that order performs:

Step one, basis treat the type of black top compound, determine reasonably to roll program, the road roller combination of configuration different model;

Step 2, near section to be paved the way, select suitable datum station (5) position, set up a split type double frequencies RTK of K10, and the duty that the split type double frequencies RTK of this K10 is " base station " pattern is set;

Step 3, the basis program of rolling determine that the road roller in current traveling process is road roller to be measured, a split type double frequencies RTK of K10 is fixed on road roller to be measured, and the working method arranging the split type double frequencies RTK of this K10 is the duty of " movement station " pattern;

Step 4, movement station (6), by receiving the positional information of satellite and datum station (5) simultaneously, obtain road roller to be measured position data accurately, and real-time Transmission are to server (7) by process;

Step 5, server (7) process the data transmitted and store, and namely user inquires about the real-time position information of road roller at any time, and obtain the running orbit information of road roller;

Step 6, roll program and road roller running orbit by contrast, judge whether work progress carries out according to the program of rolling, and adjusts constructure scheme in time.

7. the localization method of a kind of road roller based on Centimeter Level according to claim 6, it is characterized in that: when gathering road roller position data to be measured, movement station (6) gathers a position data every 5s, sends a gis packet every 5s to server (7) simultaneously.