CN205656310U - GPS locater and positioning system - Google Patents

Abstract

The embodiment of the utility model discloses a GPS locator and a positioning system, including a host and two or more GPS positioning modules, the host includes a controller and a power supply module; each GPS positioning module is connected to the controller through a data transmission line , the GPS positioning module collects positioning coordinates; the line distance measurement module on the data transmission line can measure the actual distance between any two GPS positioning modules; the controller obtains the center point coordinates and center point correction parameters according to the positioning coordinates and the actual distance. The GPS locator and the positioning system provided by the embodiment of the utility model include a plurality of GPS positioning modules, which can collect the positioning coordinates of multiple groups of power grid equipment, increase the probability of obtaining the positioning coordinates, and improve the quality of the data at the same time. The GIS unit accurately locates the grid equipment according to the received center point coordinates and center point correction parameters, providing accurate reference for grid equipment maintenance and fault location.

Description

A GPS locator and positioning system

technical field

The utility model relates to the technical field of positioning devices, in particular to a GPS positioning instrument and a positioning system.

Background technique

GIS (Geographic Information System, geographic information system) is a computerized database management system established to acquire, store, retrieve, analyze and realize positioning data. Forecasting, land management, urban planning and other fields. Among them, power GIS is a system that integrates information on power equipment and facilities, power grid operation status, mountains, rivers, towns, roads, and natural environment information such as meteorology, geology, and resources. Through GIS, you can query relevant data, images, maps, technical information, etc.

GIS has the functions of spatial data acquisition, data storage and management, data processing and analysis, data output and display, etc. Among them, data acquisition includes data collection and input, that is, the original data outside the system is transmitted to the inside of the system, and the format of the original data is converted into a format that can be recognized and processed inside the system. At present, GIS data mainly comes from GPS (Global Positioning System, global satellite positioning) and RS (Remote Sensing, modern remote sensing) technology. GIS receives raw data and forms a digital map of the obtained raw data for visual analysis of power systems. , in this process, the accuracy of the original data directly affects the accuracy of the results displayed in the GIS. For example, the positioning and description of power grid equipment by GIS requires the use of positioning technology to collect the positioning coordinates of power grid equipment. and pictures to locate and describe the grid equipment.

However, the GPS locator in the prior art is only provided with a GPS positioning module. In the process of collecting and positioning coordinates, factors such as climate (such as cloudy days with thicker clouds) and geographical location (such as mountainous areas and densely built areas) will affect The signal stability of GPS leads to inaccurate positioning coordinates of power grid equipment collected by GPS locator, that is, there is positioning deviation, which affects the precise positioning and accurate description of GIS for power grid equipment, and hinders the high-quality service and intelligent management of the power system development of.

Therefore, a GPS locator that can provide accurate positioning coordinates and improve the probability of obtaining positioning coordinates is urgently needed.

Utility model content

The embodiment of the utility model provides a GPS locator and a positioning system to solve the problem in the prior art that the inaccurate positioning coordinates of the grid equipment by the GPS locator cause the GIS to generate positioning deviation.

In order to solve the above technical problems, the embodiment of the utility model discloses the following technical solutions:

A GPS locator, comprising a host and two or more GPS positioning modules, the host includes a controller and a power supply module; each of the GPS positioning modules is connected to the controller through a data transmission line, and the GPS The positioning module is used to collect the positioning coordinates of its own location;

A line distance measurement module is provided on the data transmission line, and the line distance measurement module is used to measure the actual distance between any two GPS positioning modules;

The controller is used to obtain center point coordinates and center point correction parameters according to the positioning coordinates collected by the GPS positioning module and the actual distance measured by the line distance measurement module, wherein the center point coordinates are all the GPS positioning modules The coordinates of the center point of .

Preferably, the data transmission line is a flexible data transmission line.

Preferably, the GPS locator is also provided with a camera, and the camera is electrically connected to the controller.

Preferably, each of the GPS positioning modules is connected to the controller through a data transmission line, specifically, the number of the GPS positioning module and the data transmission line is n, n>1, and each The GPS positioning module is connected with the controller through a data transmission line.

Preferably, the host is further provided with a liquid crystal display, the liquid crystal display is electrically connected to the controller, and the liquid crystal display is used to display the positioning coordinates, center point coordinates and center point correction parameters.

Preferably, the above-mentioned GPS locator and GIS unit are included, the GPS locator is connected to the GIS unit in communication, and the GPS locator is used to obtain the coordinates of the center point, the center point correction parameters and the collected picture information and send them to said GIS unit;

The GIS unit is used to locate and describe the grid equipment according to the center point coordinates, center point correction parameters and picture information.

It can be seen from the above technical solutions that the GPS locator and the positioning system provided by the embodiments of the present invention include multiple GPS positioning modules, which can collect positioning coordinates of multiple sets of power grid equipment, which improves the probability of obtaining the positioning coordinates and improves the quality of the data at the same time. The line distance measurement module can measure the actual distance between any two GPS positioning modules. The controller obtains the coordinates of the center point and the correction parameters of the center point according to the positioning coordinates and the actual distance, and sends them to the GIS unit. Provide accurate reference for maintenance and fault location.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art In other words, other drawings can also be obtained from these drawings under the premise of not paying creative work.

Fig. 1 is the structural representation of a kind of GPS locator that the utility model embodiment provides;

Fig. 2 is a data transmission diagram of a GPS locator provided by the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a positioning system provided by an embodiment of the present invention;

The symbols in Figure 1-3 are represented as: 1-GPS locator, 101-GPS positioning module, 102-host, 103-line distance measurement module, 104-data transmission line, 105-controller, 106-liquid crystal display, 107- Power module, 108-camera, 2-GIS unit.

detailed description

In order to enable those skilled in the art to better understand the technical solution in the utility model, the technical solution in the utility model embodiment will be clearly and completely described below in conjunction with the accompanying drawings in the utility model embodiment. Obviously, The described embodiments are only some of the embodiments of the present utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

Fig. 1 is the structural representation of a kind of GPS locator that the utility model embodiment provides, as shown in Fig. 1, GPS locator 1 comprises main frame 102, data transmission line 104 and two or more GPS positioning modules 101, wherein , the host 102 includes a controller 105 .

The existing GPS locator is equipped with a single GPS positioning module, and a single GPS positioning module only collects the positioning coordinates of a group of power grid equipment. Accuracy will be affected, thereby affecting the accurate positioning of grid equipment. Therefore, the GPS locator provided by the utility model is provided with n GPS positioning modules 101, n>1, n GPS positioning modules can collect the positioning coordinates of n groups of mutually independent power grid equipment, improve the probability of obtaining positioning coordinates, and at the same time, through n The positioning coordinates are used to locate the power grid, which improves the accuracy of the positioning coordinates. In this embodiment, the value of n is 3, that is, the GPS locator 1 includes three GPS positioning modules 101. It should be pointed out that those skilled in the art can adjust the value of n according to actual testing needs, such as 2, 4 or 5, which all belong to the protection scope of the present utility model.

The GPS positioning module 101 is connected with the controller 105 through a data transmission line 104, specifically, the number of the GPS positioning module 101 and the data transmission line 104 is n, n>1, and each GPS positioning module 101 communicates with the controller through a data transmission line 104 device 105 is connected. In this embodiment, the GPS locator 1 includes 3 GPS positioning modules 101 and 3 data transmission lines 104 , one end of each data transmission line 104 is connected to the controller 105 , and the other end extends out from the host computer 102 to connect to a GPS positioning module 101 .

The GPS positioning module 101 collects the positioning coordinates of its own location, and transmits the collected positioning coordinates to the controller 105 through the data transmission line 104 . Wherein, the positioning coordinates of its own location are the positioning coordinates of the location of the GPS positioning module 101 . For example, if the GPS positioning module 101 is placed on the grid equipment, the positioning coordinates collected by the GPS positioning module 101 are the positioning coordinates of the electric equipment. In this embodiment, the GPS positioning module 101 adopts a sub-meter level, and those skilled in the art can select a GPS positioning module with a suitable positioning accuracy according to actual needs, all of which fall into the protection scope of the present invention.

The data transmission line 104 is a flexible data transmission line, therefore, the GPS positioning module 101 can be placed anywhere within the length of the data transmission line 104, such as the GPS positioning module 101 can be placed on the grid equipment or placed at a position 10m away from the power equipment , and the placement of each GPS positioning module 101 can be performed independently without being affected by other GPS positioning modules 101 . In this embodiment, the GPS locator 1 includes three GPS positioning modules 101, which are respectively the first GPS positioning module, the second GPS positioning module, and the third GPS positioning module. In actual use, the three GPS positioning modules 101 are respectively Placed in different locations of grid equipment. For example, use the GPS locator 1 to locate the position of the tower, place the first GPS positioning module on the ground at 50m to the left of the tower, and place the second GPS positioning module on the ground at 50m to the right of the tower, The third GPS positioning module is placed on the top of the tower.

A line distance measuring module 103 is connected on the data transmission line 104 between the controller 105 and the GPS positioning module 101, and the line distance measuring module 103 is used to measure the actual distance between any two GPS positioning modules 101, and any two GPS positioning modules measured will be The actual distance between the positioning modules 101 , and transmit all measured actual distances between any two GPS positioning modules 101 to the controller 105 .

The line distance measurement module 103 measures the real distance between any two GPS positioning modules 101, specifically, the line distance measurement module 103 obtains the horizontal distance between the connected GPS positioning module 101 and the controller 105 according to the position coordinates at both ends of each data transmission line. The deviation (coordinate difference in the X axis) and the longitudinal deviation (coordinate difference in the Y axis) use the Pythagorean theorem to calculate the true distance between any two GPS positioning modules 101 .

The calculation process is that the line distance measurement module 103 obtains the lateral deviation x _i and the longitudinal deviation y _i between the i-th GPS positioning module and the controller 105 according to the position coordinates at both ends of the data transmission line 104, and also obtains the j-th GPS positioning module For the lateral deviation x _j and the longitudinal deviation y _j between the positioning module and the controller 105, use the Pythagorean theorem to calculate the actual distance m _ij between the i-th GPS positioning module and the j-th GPS positioning module, and the formula is as follows:

${\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>\sqrt{{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; ,</span>$

Wherein, the values of i and j are integers within [1, n], and i≠j.

In this embodiment, the value of n is 3, that is, the GPS locator 1 includes 3 GPS positioning modules, which are respectively the first GPS positioning module, the second GPS positioning module, and the third GPS positioning module, and any two GPS positioning modules are calculated. The process of actual distance between modules 101 is as follows:

The first GPS positioning module and the second GPS positioning module,

The first GPS positioning module and the third GPS positioning module,

The second GPS positioning module and the third GPS positioning module,

The controller 105 is used to receive the positioning coordinates sent by each GPS positioning module 101 , and obtain the coordinates of the center point according to all the positioning coordinates, wherein the coordinates of the center point are the coordinates of the center points of all the GPS positioning modules 101 .

The calculation process of the center point coordinates is as follows:

In geometry, for an n-gon in a plane, the vector form v1, v2,...vn of n vertices is known, then the calculation formula of its geometric center point C is:

$\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; no</span>}}\underset{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; no</span>}}{<span\; class="notranslate">\; \&Sigma;</span>}}\mathrm{<span\; class="notranslate">\; v</span>}\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; .</span>$

Using this method, the center point coordinates of n groups of positioning coordinates will be calculated. The specific process is that the controller 105 obtains the positioning coordinates collected by each GPS positioning module 101, and n GPS positioning modules 101 collect n groups of positioning coordinates. The positioning coordinates are used as vertices to form an n-gon, and the problem of calculating the center point coordinates of n sets of positioning coordinates is transformed into calculating the coordinates of the geometric center point of the n-gon.

In this embodiment, the value of n is 3, that is, the GPS locator 1 includes three GPS positioning modules 101, namely a first GPS positioning module, a second GPS positioning module, and a third GPS positioning module. The positioning coordinates collected by each GPS positioning module 101 are used as the coordinates of each vertex, and the coordinates of the geometric center C of the triangle are calculated. For example, the positioning coordinates of the first GPS positioning module are G1 (30, 60), the positioning coordinates of the second GPS positioning module are G2 (28, 63), and the positioning coordinates of the third GPS positioning module are G3 (33, 59).

The first step: according to the positioning coordinates collected by each GPS positioning module 101, calculate the vector pointing to each vertex from the origin, and take the zero point 0 (0,0) as the origin, then its calculation process is:

OG ₁ =(30,60)-(0,0)=(30,60);

OG ₂ =(28,63)-(0,0)=(28,63);

OG ₃ =(33,59)-(0,0)=(33,59).

Step 2: Calculate the vector of the geometric center point C:

OC=(OG ₁ +OG ₂ +OG ₃ )/3=(30,61);

Step 3: Obtain the coordinates (30, 61) of the geometric center point C, which is the coordinates of the center point.

In order to reduce the positioning deviation, it is necessary to correct the center point coordinates, the controller 105 obtains the center point coordinates according to the positioning coordinates collected by the GPS positioning module 101 and the actual distance measured by the line distance measurement module 103 to obtain the center point correction parameters, Use the center point correction parameters to correct the center point coordinates to reduce positioning deviation and improve positioning accuracy.

The controller 105 obtains the center point correction parameter specifically, the controller 105 obtains the positioning gap between any two GPS positioning modules 101 according to the positioning coordinates collected by the GPS positioning module 101, and at the same time, the controller 105 receives the actual distance measured by the line distance measuring module 103 Distance, center point correction parameters can be obtained according to the actual distance and positioning gap.

The calculation process of the center point correction parameters is as follows:

The first step: the actual distance between any two GPS positioning modules 101, its formula is as follows,

${\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>\sqrt{{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; x</span>}}_{\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; (</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; the\; y</span>}}_{\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; ,</span>$

Wherein, the values of i and j are integers within [1, n], and i≠j.

Second step: calculate the positioning gap between any two GPS positioning modules 101, the formula is as follows,

${\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; r</span>}\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\sqrt{{\mathrm{<span\; class="notranslate">\; sin</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}\frac{\mathrm{<span\; class="notranslate">\; a</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; L</span>}\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; L</span>}\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; *</span>{\mathrm{<span\; class="notranslate">\; sin</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}\frac{\mathrm{<span\; class="notranslate">\; b</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; *</span>\mathrm{<span\; class="notranslate">\; 6378.137</span>}<span\; class="notranslate">\; ,</span>$

Wherein, a=Lati-Latj, b=Lungi-Lungj, the values of i and j are integers within [1, n], and i≠j, 6378.137 is the radius of the earth, and the unit is km.

The positioning coordinates collected by the GPS positioning module 101 are Gn (Latn, Lungn), n=1, 2, 3..., for example, the latitude and longitude of the G1 point is (Lat1, Lung1), the latitude and longitude of the G2 point is (Lat2, Lung2), and the G3 point The latitude and longitude are (Lat3, Lung3).

The third step: calculate the offset parameter, the formula is as follows,

${\mathrm{<span\; class="notranslate">\; p</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}}{{\mathrm{<span\; class="notranslate">\; the\; s</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}}<span\; class="notranslate">\; .</span>$

Step 4: Calculate the average value of multiple offset parameters as the center point correction parameter P, the formula is as follows,

$\mathrm{<span\; class="notranslate">\; P</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; no</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;p</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; .</span>$

The GPS locator 1 is also provided with a camera 108 , which is used to take picture information of the grid equipment and send the picture information to the controller 105 . In this embodiment, the camera 108 is a wide-angle camera with an auxiliary lighting function, has extremely high sensitivity and fast response, and can work in various climates and environments.

Also be provided with liquid crystal display 106 on the main frame 102, liquid crystal display 106 is electrically connected with controller 105, and liquid crystal display 106 is used for displaying the positioning coordinates that each GPS positioning module 101 collects and the center point coordinates that controller 105 calculates, center point correction parameter .

The host 102 is also provided with a power supply module 107 , which is used to provide power to other modules of the GPS locator 1 .

FIG. 2 is a data transmission diagram of a GPS locator provided by an embodiment of the present invention. As shown in FIG. 2 , the GPS positioning module 101 collects the positioning coordinates of power grid equipment and transmits them to the controller 105 through the data transmission line 104 . The controller 105 transmits the positioning coordinates collected by the GPS positioning module 101 to the liquid crystal display 106 , and the liquid crystal display 106 displays the positioning coordinates collected by each GPS positioning module 101 .

The line distance measurement module 103 measures the actual distance between any two GPS positioning modules 101 and transmits it to the controller 105 .

The controller 105 calculates the center point coordinates and the center point correction parameters according to the positioning coordinates collected by all GPS positioning modules 101 and the actual distance between all any two GPS positioning modules 101 measured by the line distance measurement module 103, and calculates the resulting The center point coordinates and center point correction parameters are transmitted to the liquid crystal display 106, and the liquid crystal display 106 displays the received center point coordinates and center point correction parameters.

The camera 108 on the GPS locator 1 collects the picture information of the grid equipment, and transmits it to the controller 105 .

Fig. 3 is the structure schematic diagram of a kind of positioning system that the utility model embodiment provides, as shown in Fig. 3, positioning system comprises GPS locator 1 and GIS unit 2 that communication connects, and GPS locator 1 coordinates center point, center point Correction parameters and picture information are sent to GIS unit 2.

GIS unit 2 receives center point coordinates, center point correction parameters and picture information, and accurately locates and accurately describes power grid equipment through center point coordinates, center point correction parameters and picture information, specifically: GIS unit 2 receives GPS locator 1 The sent center point coordinates and center point correction parameters are used to correct the center point coordinates through the center point correction parameters to obtain and display the corrected positioning data of the grid equipment. At the same time, the GIS unit 2 receives the picture information sent by the GPS locator 1, and displays the appearance of the grid equipment according to the picture information.

The GPS locator and the positioning system provided by the embodiment of the utility model are equipped with multiple GPS positioning modules, which can collect the positioning coordinates of multiple groups of power grid equipment, and improve the probability of obtaining the positioning coordinates. At the same time, the GPS locator can calculate the center point coordinates and center point correction parameters of multiple sets of positioning coordinates, and correct the center point coordinates through the center point correction parameters to obtain more accurate positioning data, providing accurate data for power repairs, fault point analysis, etc. It lays the foundation for the provision of high-quality power and grid services.

For the convenience of description, when describing the above devices, functions are divided into various units and described separately. Certainly, when implementing the utility model, the functions of each unit can be implemented in one or more software and/or hardware.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific implementation methods of the present utility model, so that those skilled in the art can understand or realize the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. a GPS position finder, it is characterised in that include main frame (102) and two or more GPS locating modules (101), described main frame (102) includes controller (105) and power module (107)；Each described GPS locating module (101) is connected with described controller (105) by a data transmission line (104), and described GPS locating module (101) is for gathering the elements of a fix of himself position；

Described data line (104) is provided with a circuit distance-measurement module (103), and described circuit distance-measurement module (103) is used for measuring the actual range described in any two between GPS locating module (101)；

The actual range that described controller (105) is measured for the elements of a fix gathered according to described GPS locating module (101), described circuit distance-measurement module (103) obtains center point coordinate and central point correcting parameter, wherein, described center point coordinate is the coordinate of central point of all described GPS locating modules (101).

GPS position finder the most according to claim 1, it is characterised in that described data line (104) is flexible data line.

GPS position finder the most according to claim 1, it is characterised in that be additionally provided with photographic head (108) on described GPS position finder (1), described photographic head (108) electrically connects with described controller (105).

GPS position finder the most according to claim 1, it is characterized in that, described each described GPS locating module (101) is connected with described controller (105) by a data transmission line (104), it is specially, described GPS locating module (101) is n with the quantity of described data line (104), n > 1, each described GPS locating module (101) is connected with described controller (105) by a data transmission line (104).

GPS position finder the most according to claim 1, it is characterized in that, liquid crystal display (106) it is additionally provided with on described main frame (102), described liquid crystal display (106) electrically connects with described controller (105), and described liquid crystal display (106) is used for showing the described elements of a fix, center point coordinate and central point correcting parameter.

6. an alignment system, it is characterized in that, including the GPS position finder (1) described in claim 1-5 any one and GIS unit (2), described GPS position finder (1) communicates to connect with described GIS unit (2), and described GPS position finder (1) is used for obtaining described center point coordinate, central point correcting parameter and gathering pictorial information and send to described GIS unit (2)；

Described GIS unit (2) is for positioning grid equipment according to described center point coordinate, central point correcting parameter and pictorial information and describing.