JP2011010479A - Apparatus for selecting feature to be removed for feature under transmission line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting tree selecting apparatus of a tree under a transmission line, which can reduce cost required for cutting work, by calculating a growing rate at every tree and putting the trees whose separation distance becomes near after several years to a cutting plan without omission.SOLUTION: The apparatus is provided with a first extracting part 6, a second extracting part 7, a growing rate calculation part 9, a tree height predicting part after several years 11, a projection processing part 12, a span diagram display processing part 13 (a plane view generation processing part 13c, a cross section diagram generation processing part 13b and a vertical diagram generation processing part 13c), a multiwindow managing part 14 and a separation distance calculating part 16. The cutting tree selecting device of the tree under the transmission line obtains the growing rate βi of every tree from present span laser data and past laser data, and predicts the tree height after several years at every tree. The separation distance after several years is obtained from the predicted tree height and the tree to be cut is determined from the separation distance.

Description

  According to the present invention, a feature (a tree to be cut) is removed by considering the separation distance after several years by determining how the separation distance between the transmission line and a feature near the transmission line (for example, a tree) will be several years later. It is related with the removal feature selection apparatus of the transmission line base material which can make the removal plan which can select.

  The transmission line is stretched between the steel tower and the steel tower (hereinafter referred to as a span) with a predetermined slack. For this reason, for example, in a mountainous area, the distance between the transmission line and the tree becomes closer due to the growth of trees existing in the span (hereinafter referred to as the tree under the transmission line). In urban areas, an antenna or the like grounded to a building or home may approach a power transmission line.

  For example, when the span is long, in the mountainous area, the number of trees below the transmission line may reach tens of thousands. The separation distance between the transmission line and the feature is stipulated in the law (technical standards for electrical equipment), and it is necessary to ensure the distance stipulated by the law. Hereinafter, the feature is described as a tree.

  For this reason, the distance between each tree and each electric wire is measured by the computer device from the three-dimensional information measured by the laser distance measuring device mounted on the helicopter. In general, the distance between a tree and a transmission line must be a predetermined distance or more from the viewpoint of facility security (hereinafter referred to as a separation distance).

  For this reason, the tree under the transmission line having a short separation distance is calculated from the above-described three-dimensional information, and a tree that needs to be cut is determined as in Patent Document 1, and this is simply displayed by color.

  However, trees grow year by year. For this reason, determine a certain area within the span, pay attention to the tree that seems to have the fastest elongation in this area, calculate the separation distance using the elongation obtained from the literature, etc. Depending on the situation, the felled tree may be determined.

Japanese Patent No. 3927660

  However, we would like to keep the cost of cutting trees under the span between transmission lines as low as possible. For this reason, predicting the height of trees under the transmission line several years later and putting trees under the transmission line with a small separation distance in the logging plan will reduce costs in the long run.

  Trees have different growth rates depending on land conditions and sunshine. However, in the past, using the same growth rate for an entire area to calculate the tree height of trees under the transmission line several years later, the separation distance was calculated, resulting in an error in the height of each tree, resulting in transmission lines. Many errors occurred in the separation distance of each lower tree.

  For this reason, even if there is a tree under the transmission line that grows fast, it will be lost from the logging plan, and as a result, a new logging operation must be performed for the tree under the transmission line.

  In other words, in order to keep costs down, the growth of trees below the transmission line after several years was calculated, and the ones that were close to the separation distance were included in the logging plan. A new logging operation occurred, resulting in higher costs.

  In addition, if there is a tree under the transmission line leaked from the logging plan and the tree under the transmission line grows fast, the separation distance is not satisfied before the next logging plan, resulting in a dangerous state.

  Further, in urban areas, as the buildings, antennas, and the like become higher, the separation distance cannot be maintained, which may lead to a dangerous state.

  The present invention has been made in view of the above-mentioned problems, and it is possible to further reduce the cost and secure safety by putting the transmission line substrate whose separation distance becomes closer as time passes into the removal plan. Obtain a power transmission line substrate removal feature selection device.

The present invention uses a three-dimensional position of a feature obtained by emitting a laser from above, a power transmission line between the first steel tower and the second steel tower, and a ground existing between the power transmission line and the diameter. This is a power transmission line ground removal feature selection device that determines a separation distance from an object and displays a result of the determination corresponding to the position of the feature on the display unit together with the power transmission line to select a feature to be removed. And
Past feature data including coordinate values (Xbi, Ybi, Zbi) of each past feature between the diameters, and current coordinate values of each feature between the same diameter and the same diameter ( First storage means in which current feature data including Xai, Yai, Zai) is stored;
The position (Xai, Yai) of the feature is stored in correspondence with the predicted height (Zci) when the predetermined predicted time of each current feature data has elapsed and this elongation rate. Two storage means;
All the past feature data stored in the first storage means is extracted, and the current feature data at the same position as the past feature data is extracted for each of the extracted past feature data. The elongation rate per predetermined time is calculated from the difference between the height of the extracted current feature data and the height of the extracted past feature data, and corresponds to the position (Xai, Yai) of the feature. An elongation rate calculating unit that stores the second storage means in the second storage means;
All the heights of the current feature data are read, and for each read, the elongation rate at the same position as the current feature data is read from the second storage means, and the read current feature data Is multiplied by the elongation rate of the same position and the predicted time, and the height is added to calculate the height (Zci) up to the predicted time, thereby calculating the position of the feature (Xai, Yai). ) To be stored in the second storage means correspondingly,
A separation distance determination unit that determines and determines the separation distance from the height (Zci) to the predicted time, the position of the previous feature (Xai, Yai), and the coordinate value (Xi, Yi, Zi) of the transmission line; The main point is that

Further, the present invention according to claim 2 is the method according to claim 1, wherein the plane between the diameters is set to an XY coordinate system, a longitudinal section is set to an XZ coordinate system, and a transverse section is set to a YZ coordinate system. A three-dimensional space memory in which a three-axis coordinate system is defined, the coordinate values (Xi, Yi, Zi) of the transmission line, the height of the feature (Zci) up to the prediction time, and the position of the feature And a projection unit that projects the predicted feature height data including (Xai, Yai) onto the three-axis coordinate system of the three-dimensional space memory,
The separation distance determination unit
In the three-axis coordinate system, the position (Xai, Yai) of the predicted feature height data in the XY coordinate system (plane), the position of the transmission line (Xi, Yi), and the YZ coordinate system (cross section) ) And means for determining a separation distance based on the position (Yai, Zci) of the predicted feature height data and the Yi, Zi coordinates of the transmission line.

According to a third aspect of the present invention, in the second aspect, the feature predicted height data projected on the XY coordinate system (plane) is converted into the position (Xai, Yai) of the feature predicted height data. The plan view generation that displays the power transmission line projected on the XY coordinate system (plane) while displaying on the display unit with a symbol, sign, or color according to the determination result of the separation distance corresponding to The gist is to include a processing unit.

  According to a fourth aspect of the present invention, in the second aspect of the present invention, the predicted feature height data projected on the XZ coordinate system (longitudinal section) is the position of the predicted feature height data (Xai, Zci) A vertical section that displays a power transmission line projected on the XZ coordinate system (longitudinal section) while displaying on the display unit with a symbol, sign, or color according to the determination result of the separation distance corresponding to Zci) The gist of the present invention is to include a surface view generation processing unit.

  Further, the present invention described in claim 5 is the method according to claim 2, wherein the predicted feature height data projected on the YZ coordinate system (cross-sectional view) is the position of the predicted feature height data (Yai, Zci) A cross-section for displaying the transmission line projected on the YZ coordinate system (cross-sectional view) while being displayed on the display unit with a symbol, sign or color corresponding to the determination result of the separation distance corresponding to Zci) The gist is to include a diagram generation processing unit.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the feature is a tree under a power transmission line between the first steel tower and the second steel tower. The gist is that the forecast time is a forecast year, and the predetermined time is one year.

  As described above, according to the present invention, an elongation rate is obtained for each piece from the height of the past feature (tree) and the current height, and the estimated time (several years later) is used for each feature. Since the height is determined and the separation distance is determined, a feature (tree) that will be dangerous in the future can be found. For this reason, since the removal (cutting plan) including the feature (tree) which becomes a danger in the future is made at the time of the removal plan, the cost can be reduced. Moreover, the danger that the separation distance concerned in the future will become near can be eliminated.

It is a schematic block diagram of the felling tree selection apparatus of the tree under a power transmission line of this Embodiment. It is explanatory drawing explaining calculation of the elongation rate of this Embodiment. It is explanatory drawing explaining the future prediction of this Embodiment. It is explanatory drawing explaining a power transmission line parameter. It is explanatory drawing explaining tree-separation determination information. It is explanatory drawing explaining prediction tree height data. It is a flowchart explaining the operation | movement of this Embodiment. It is explanatory drawing explaining the tree height of five years ago, and the present tree height. It is explanatory drawing explaining calculation of elongation rate. It is explanatory drawing explaining the tree height-separation distance determination after 5 years. It is explanatory drawing explaining the determination of the predicted tree height and separation distance. It is explanatory drawing explaining the screen of a top view production | generation process and a longitudinal cross-section view production | generation process. It is explanatory drawing explaining the screen of sectional drawing production | generation processing.

  In the present embodiment, the feature is described as a tree.

  FIG. 1 is a schematic configuration diagram of a felled tree selection device for trees under a power transmission line according to the present embodiment. As shown in FIG. 2, the felling tree selection device for the tree under the power transmission line in FIG. 1 uses a current laser data obtained by an aircraft such as a helicopter and data obtained from past laser data to obtain a power transmission line. The growth rate βi for each lower tree is obtained, and the tree height after several years is predicted for each tree. Then, as shown in FIG. 3, a separation distance several years later is obtained from the predicted tree height, and a tree under the transmission line to be cut is determined from this separation distance. The predicted separation distance is displayed by color according to the determination result of the separation distance.

  In the present embodiment, the past may be 3 years ago, 5 years, 7 years ago, or 10 years ago, but 5 years ago is used as an example. In addition, “after several years” may be three years, five years, seven years, or ten years later. However, five years later is used as an example after several years.

(Constitution)
As shown in FIG. 1, the felling tree selection device for the trees under the power transmission line is a computer device that includes a display unit 1, a main unit 2, and the like.

  The main body 2 includes a database 4 and a database 5. The database 4 uses, for example, a mesh filter having a mesh length of 20 cm for the current laser data (X, Y, Z) of the span Ai and having a length corresponding to the span. Current laser data Rai obtained by extracting laser data having a Z value is stored.

  In addition, the database 5 uses, for example, a mesh filter having a mesh of a 20 cm lattice and a length corresponding to the span Ai for the laser data (X, Y, Z) five years before the span Ai, Laser data Rbi five years ago from which laser data having the maximum Z value in the mesh is extracted is stored.

  These data are stored in the CD-ROM 3 or the like, and the current laser data Rai stored in the CD-ROM 3 and the laser data Rbi five years ago are stored in the database 4 and the database 5.

  In addition, the main body 2 includes a first extraction unit 6, a second extraction unit 7, an elongation rate calculation unit 9, a tree height prediction unit 11 several years later, a projection processing unit 12, and a span diagram display. A processing unit 13 (plan view generation processing unit 13c, sectional view generation processing unit 13b, longitudinal drawing generation processing unit 13c), a multi-window management unit 14, a separation distance calculation unit 16, and the like are provided. Further, a database 17 storing transmission line parameters, a tree-separation data Ebi five years ago, a current tree-separation data Eai, and a memory unit 8 storing tree-separation data Eci five years later, The memory 10 etc. in which the height information (prediction) of the tree after five years is stored are provided.

  As shown in FIG. 4, the transmission line parameter Ji of the database 17 described above includes, for example, the transmission line Ai (i; a, b, c,...) And the terrain data Gi (i; a, b, c,...), a plurality of spans Bi (i; a1, a2,..., b1, b2,...) and an image number ki (i; a1, a2,..., b1 , B2,...

  As shown in FIG. 4, the aforementioned span Bi is calculated from the transmission line number, the tower number, the tower height, the transmission line type, the transmission power (maximum time, normal time), the fulcrum position of the transmission line (the position of the insulator), etc. Become.

  As shown in FIG. 1, the memory 8 stores a memory 8a in which tree-separation data Ebi including tree position data MRbi five years ago is stored, and current tree-separation data including current tree position data GRai. A memory 8b in which Eai is stored, and a memory 8c in which tree-separation data Eci after five years including tree position data SRi after five years are stored are provided. The calculation of these tree-separation data will be described later.

  As shown in FIG. 5, the tree position data MRbi five years ago, the current tree position data GRai, and the tree position data SRi five years later are the route Ai (Aa) and the transmission line state information Lai (La1). The tree position, tree altitude Z, separation distance, and separation determination result are stored in a linked structure. These are referred to as tree-separation data Ebi five years ago, current tree-separation data Eai, tree-separation data Eci five years later.

  FIG. 5A shows tree-separation data Ebi five years ago, and FIG. 5B shows current tree-separation data Eai. FIG. 5C shows tree-separation data Eci after 5 years.

  In FIG. 5, b is used for distinction 5 years ago, and a is used 5 years later, and c is used 5 years later.

  The transmission line state information Lai includes the presence / absence of power transmission (maximum, normal), presence / absence of wind (maximum, no wind), transmission line swing width (wind maximum), and the like.

  The memory 10 stores the predicted tree height data Yri shown in FIG. The predicted tree height data Yri includes the tree position (Xci, Yci) of the tree number hci, the difference between the height of the tree five years ago and the current tree height, the growth rate βi per year, and five years. The predicted height zci and the like of a later tree are associated with each other. The generation of the predicted tree height data Yri will be described later.

(Description of each part)
For example, 2 m or more of the current laser data Rai (X, Y, Z) stored in the database 4 is stored in the memory 8b as the current tree position data GRai. In this memory 8b, the distance Ai and the span Bi are previously stored in correspondence with each other by the separation distance determination unit 16, and the current tree position data GRai is linked and stored therein.

  The second extraction unit 7 stores, for example, 2 m or more in the laser data Rbi (X, Y, Z) of five years ago stored in the database 5 in the memory 8a as tree position data MRai of five years ago. . In the memory 8a, the distance Ai and the span Bi are associated with each other in advance by the separation distance determination unit 16, and the current tree position data MRbi is linked and stored therein.

  The growth rate calculation unit 9 reads the tree position data MRbi five years ago in the memory 8a and the current tree position data GRai stored in the memory 8b. Then, the difference from the Zi value at the same position is obtained, and the annual growth rate βi is obtained. The position (Xai, Yai) is associated with the difference and the elongation rate βi and stored in the memory 10 as shown in FIG.

  After several years, the tree height calculation unit 11 reads the elongation rate βi (i: 1, 2, 3,...) Corresponding to each tree position stored in the memory 10 and inputs it using the elongation rate βi. The tree height (tree predicted height) up to the predicted year (for example, five years later) is obtained, linked to the tree position (Xai, Yai), and stored in the memory 10 (see FIG. 6).

  After several years, the tree height calculation unit 11 reads the predicted tree height corresponding to the tree position, and stores the predicted tree height linked to the corresponding tree in the memory 8c.

  That is, the tree height linked to the tree position (Xai, Yai) of the tree number hci stored in the memory 8c is, for example, a predicted tree height five years from now.

  The separation distance determination unit 16 discloses a screen for inputting conditions described below (not shown) on the display unit 1, a separation distance determination screen five years ago, a current separation distance determination screen, 5 A screen for inputting a judgment screen for the separation distance after the year or a comparison screen for the judgment results of the separation distance for the current and five years later and five years ago is disclosed on the display unit 1 (not shown). In addition, a screen for inputting the span Bi is opened.

  If it is the determination of the separation distance five years ago, the separation distance determination unit 16 will determine the tree position (Xbi, Ybi) and Zbi of the tree number Hbi stored in the memory 8a, the tower height of the span Bi, the transmission line The power transmission line curve obtained from the seed, fulcrum position, etc. is passed to the projection processing unit 12 and projected onto the three-dimensional space memory 12a.

  If it is the determination of the current separation distance, the separation distance determination unit 16 stores the tree positions (Xai, Yci) and Zai of the current tree number hai stored in the memory 8b, the tower height of the span Bi, the transmission line The power transmission line curve obtained from the seed, fulcrum position, etc. is passed to the projection processing unit 12 and projected onto the three-dimensional space memory 12a.

  Further, if it is a determination of the separation distance after 5 years, the separation distance determination unit 16 uses the tree position (Xc, Yc) and Zci of the tree number hci after 5 years stored in the memory 8c, and the span Bi. The transmission line curve obtained from the tower height, transmission line type, fulcrum position, etc. is passed to the projection processing unit 12 and projected onto the three-dimensional space memory 12a.

  Further, the transmission line is shaken or slacked under the input conditions and passed to the projection processing unit, and the tree position of the tree number hbi five years ago (Xbi, Ybi) and the tree position of the current tree number hai (Xai, Yai) or the distance between the tree position (Xci, Yci) of the current tree number hci after 5 years and the transmission line is set to the XY coordinate system, XZ coordinate system, and Y of the three-dimensional space memory 12a. Obtained in the -Z coordinate system, and the determination result is linked to each tree position of the tree number hbi, hai or hci and stored (see FIG. 5).

  For example, the above-described conditions are as follows.

(1) When the maximum power is not supplied to the transmission line and it is set not to consider the influence of wind, simply determine the distance between the tree and the transmission line.

(2) When the maximum power is not supplied to the transmission line and the effect of wind is taken into consideration, the distance between the tree and the transmission line when the transmission line during normal power transmission is shaken with the maximum wind is obtained.

(3) When it is set that the maximum power is supplied to the transmission line and the influence of wind is not taken into consideration, the maximum power is supplied to the transmission line and slackened to obtain the separation distance between the tree and the transmission line.

(4) Trees and transmission lines when maximum power is supplied to the transmission line and the influence of wind is taken into account, and when the maximum power is supplied to the transmission line and slackened, and the transmission line is shaken with maximum wind power Find the separation distance.

  Further, in the display of the sectional view, when the transmission line is swung during normal power transmission, a semicircle centered on the fulcrum of the section of the steel tower is obtained and projected to obtain the separation distance. When wind is taken into consideration when supplying the maximum power, the fulcrum of the steel tower is extended and projected based on a predetermined condition, and a semicircle centered on the fulcrum at this time is obtained to obtain the separation distance.

  Moreover, the risk level described below is assigned to the above-mentioned separation distance. For example, the separation distance of any surface component on the XY axis plane (plane), the XZ axis plane (vertical plane), and the YZ axis plane (horizontal plane) is within a predetermined number of weeks in the transmission line. Red is assigned when it is close to, purple is assigned when it is close to a transmission line within a few months, and green is assigned to the position of other trees.

  The projection processing unit 12 includes a three-dimensional space memory 12a in which a three-axis coordinate system is defined, projects X and Y coordinate values onto an XY coordinate system, and converts X and Z coordinate values into an XZ coordinate system. Projection is performed, and Y and Z coordinate values are projected onto the YZ coordinate system.

  In response to the plan view display command, the plan view generation processing unit 13a determines the tree position of the tree number hbi (Xbi, 5 years ago) defined in the XY coordinate system of the three-dimensional space memory 12a of the projection processing unit 12. Ybi) or the tree position of the current tree number hai (Xai, Yai) or the tree position of the tree number hci five years later (Xci, Yci) is displayed as a symbol or sign on the screen, and in the XY coordinate system The defined span (power transmission line, steel tower; Xi, Yi) is displayed on the screen. At this time, the determination result of the separation distance corresponding to the tree position stored in the memory 8a, the memory 8b, or the memory 8c is read, and a code or a symbol is displayed by color according to the determination result.

  In response to the longitudinal section display command, the longitudinal drawing generation processing unit 13c has a tree position (Xbi, Zbi) five years ago defined in the XZ coordinate system of the three-dimensional space memory 12a of the projection processing unit 12 or The tree position of the current tree number hai (Xai, Zai) or the tree position of the tree number hci five years later (Xci, Zci) is displayed on the screen as a symbol or sign, and is defined in the XZ coordinate system The span (transmission line, steel tower) is displayed on the screen. At this time, the determination result of the separation distance corresponding to the tree position stored in the memory 8a, the memory 8b, or the memory 8c is read, and a code or a symbol is displayed by color according to the determination result.

  The sectional view generation processing unit 13b reads the vertical cursor position of the displayed plan view in accordance with the sectional view display command, and is defined in the YZ coordinate system of the three-dimensional space memory 12a corresponding to the cursor position. The tree position of the tree number hbi five years ago (Ybi, Zbi), the tree position of the current tree number Hai (Yai, Zai), or the tree position of the tree number hci five years later (Yci, Zci) is symbolized or signed. Are displayed on the screen, and the span (transmission line, steel tower) defined in the YZ coordinate system is displayed on the screen. At this time, the determination result of the separation distance corresponding to the tree position stored in the memory 8a, the memory 8b, or the memory 8c is read, and a code or a symbol is displayed by color according to the determination result.

  The multi-window management unit 14 manages each program and simultaneously opens a plurality of desired screens on the display unit 1. In addition, the position on the screen designated by the mouse is notified.

(Operation)
The operation of the tree selection apparatus for felling trees under the transmission line configured as described above will be further described below with reference to the flowchart of FIG. In the present embodiment, it is assumed that the database 5 stores a plurality of laser data of several years ago in units of years.

  The first extraction unit 6 extracts the current laser data Rai from the database 4 and stores the tree position data GRai in the memory 8b (S1).

  Further, the second extraction unit 7 extracts the laser data Rbi five years ago stored in the database 5 and stores it as tree position data MRbi in the memory 8a (S2).

  The growth rate calculation unit 9 reads the tree position data MRbi five years ago having the Xai and Yai coordinates for each current tree position data GRai, and obtains the annual growth rate βi from the mutual Z value ( S3). The elongation rate βi is stored in the memory 10 in correspondence with the Xai and Yai coordinates.

  Next, the elongation rate calculation unit 9 determines whether or not the elongation rate βi of all the tree position data has been obtained. If not, the process returns to step S5 (S4).

  If it is determined in step S4 that the elongation rate βi has been obtained for all the tree position data, the tree height calculation unit 11 after several years reads the estimated date (for example, five years later) input (S5).

  Next, the Za value is read for each current tree position data GRai stored in the memory 8b, and the tree height after five years is obtained for this Za (S6). This predicted tree height is obtained as Zai + elongation rate βi × “5”, and is stored in correspondence with the Xai and Yai coordinate values of the memory 10. Next, the tree height for each Xai and Yai stored in the memory 10 is stored in the memory 8c of the memory unit 8 (S7).

  Then, the separation distance determination unit 16 passes the predicted tree height data stored in the memory 8c to the projection processing unit, and performs a process for obtaining each separation distance (S8).

  The description of the above-described elongation rate calculation process will be supplemented with reference to FIGS.

  The tree position data MRbi five years ago stored in the memory 8a is, for example, the tree height shown in FIG. 8A (see FIG. 2), and the current tree position data GRai stored in the memory 8b is FIG. In the case of the tree height shown in (b) (see FIG. 2), the difference between the tree heights of the same X and Y coordinates is obtained, and the annual growth rate βi is obtained from this difference (see FIG. 9). In FIG. 9, the elongation rate βi of the trees Xa1 and Ya1 is determined to be 60 [cm / year], the elongation rate βi of the trees Xa2 and Ya2 is determined to be 100 [cm / year], and the trees of Xai and Yai are determined. This shows an example in which the elongation rate βi is determined to be 80 [cm / year].

  Then, for each tree number hci shown in FIG. 10, the value of (elongation rate βi × 5 years) is added to the current tree position data having the Xci, Yci (Xai, Yai) to predict the tree height ( (See FIG. 6). As shown in FIG. 3, the predicted year may be three years later, five years later, or seven years later.

  As shown in FIG. 2 and FIG. 3, even if there is little risk of the separation distance at present, the separation distance becomes dangerous after three years, five years, and seven years.

  Then, the predicted height data Xc, Yc and the predicted height are stored in the memory 8c, the separation distance determination unit 16 obtains the separation distance, and the decision result is obtained (see FIG. 10).

  In FIG. 10, the predicted tree height after 5 years of Xa1 and Ya1 is 9 m and the separation distance is 11 m, the tree height of Xa2 and Ya2 is 17 m and the separation distance is 3 m, and the tree prediction of Xai and Yai is calculated. In this example, the height is 12 m and the separation distance is determined to be 8 m, and Xa2 and Ya2 are determined to be dangerous.

  That is, in this embodiment, as shown in FIG. 11, an elongation rate is obtained from the difference between the tree height of one tree five years ago and the current tree height, and the tree height in the year predicted using this growth rate is calculated. Predict. And the separation distance from the predicted power transmission line after 5 years is obtained.

  A plan view of the span displayed by the plan view generation processing unit 13a is shown in FIG. 12A, and a longitudinal view displayed by the longitudinal drawing generation processing unit 13c is shown in FIG. A cross-sectional view displayed by the processing unit 13b is shown in FIG.

  FIG. 12 (a) shows the result after performing the distance calculation of (1), (2), (3), and (4) above on the dangerous trees between the towers of the transmission line. Is displayed. In FIG. 12A, for example, a circle indicates green, Δ indicates purple, and X indicates a dangerous tree.

  FIG. 12B is an example in which the curve of the power transmission line connecting the steel towers is obtained according to the setting conditions of (1), (2), (3) or (4) above, and the dotted line is normal power transmission. The worst time (maximum power supply; summer) is the solid line.

  In FIG. 13, the vertical cursor position 25 in the plan view is read as the cross-sectional image display position Da, and a symbol or sign is assigned to the cross-sectional coordinates (hay, haz) projected on the YZ coordinate system corresponding to the Da as the determination result. It is the example which displayed the cross-sectional image displayed according to color based on.

In the generation of the disconnection image, a (dotted line) image when the transmission line in normal power transmission is shaken with the maximum wind force, an image at the worst time, and an image of the determined dangerous tree are generated and displayed.

  Next to this image, numerical values are displayed for the stillness, the sag during the horizontal swing, the temperature, and the swing angle.

  Therefore, in this embodiment, the elongation rate is obtained from the height of the past tree and the current height for each tree, and the tree height is determined for each tree after several years using this elongation rate, and the separation distance is determined. As a result, trees that will become dangerous in the future are known. For this reason, since a felling plan including a tree that will be dangerous in the future is made in the felling plan, the cost can be reduced.

DESCRIPTION OF SYMBOLS 1 Display part 2 Main body part 4 Database 5 Database 6 1st extraction part 7 2nd extraction part 9 Growth rate calculation part 11 Tree height prediction part after several years 12 Projection process part 13 Interstitial view display process part 13a Plan view generation Processing Unit 13b Cross Section Generation Generation Unit 13c Longitudinal Drawing Generation Processing Unit 16 Separation Distance Calculation Unit

Claims (6)

Using the three-dimensional position of the feature obtained by emitting a laser from the sky, the transmission line between the first tower and the second tower is separated from the transmission line and the feature existing between the diameters. A power transmission line ground removal feature selection device for determining a distance, and selecting a feature to be displayed and displayed on the display unit together with the power transmission line in correspondence with the position of the feature,
Past feature data including coordinate values (Xbi, Ybi, Zbi) of each past feature between the diameters, and current coordinate values of each feature between the same diameter and the same diameter ( First storage means in which current feature data including Xai, Yai, Zai) is stored;
The position (Xai, Yai) of the feature is stored in correspondence with the predicted height (Zci) when the predetermined predicted time of each current feature data has elapsed and this elongation rate. Two storage means;
All the past feature data stored in the first storage means is extracted, and the current feature data at the same position as the past feature data is extracted for each of the extracted past feature data. The elongation rate per predetermined time is calculated from the difference between the height of the extracted current feature data and the height of the extracted past feature data, and corresponds to the position (Xai, Yai) of the feature. An elongation rate calculating unit that stores the second storage means in the second storage means;
All the heights of the current feature data are read, and for each read, the elongation rate at the same position as the current feature data is read from the second storage means, and the read current feature data Is multiplied by the elongation rate of the same position and the predicted time, and the height is added to calculate the height (Zci) up to the predicted time, thereby calculating the position of the feature (Xai, Yai). ) To be stored in the second storage means correspondingly,
A separation distance determination unit that determines and determines the separation distance from the height (Zci) to the predicted time, the position of the previous feature (Xai, Yai), and the coordinate value (Xi, Yi, Zi) of the transmission line; An apparatus for selecting a removed feature of a transmission line substrate. A three-dimensional space memory in which a three-axis coordinate system in which the plane is defined as an XY coordinate system, a longitudinal section as an XZ coordinate system, and a transverse section as a YZ coordinate system is defined. The predicted feature height data including the coordinate values (Xi, Yi, Zi) of the transmission line, the height of the feature (Zci) up to the predicted time, and the position (Xai, Yai) of the feature A projection unit for projecting on the three-axis coordinate system of the original space memory,
The separation distance determination unit
In the three-axis coordinate system, the position (Xai, Yai) of the predicted feature height data in the XY coordinate system (plane), the position of the transmission line (Xi, Yi), and the YZ coordinate system (cross section) 2. The transmission line base material removal according to claim 1, further comprising: means for determining a separation distance based on the position (Yai, Zci) of the predicted feature height data and the Yi and Zi coordinates of the transmission line. Feature selection device. The feature predicted height data projected onto the XY coordinate system (plane) is converted into a symbol corresponding to the determination result of the separation distance corresponding to the position (Xai, Yai) of the feature predicted height data, or 3. A power transmission line ground according to claim 2, further comprising: a plan view generation processing unit that displays the power transmission line projected on the XY coordinate system (plane) while being displayed on the display unit with a sign or a color. Item removal feature selection device. A symbol corresponding to the determination result of the separation distance corresponding to the position (Xai, Zci) of the predicted feature height data, the predicted feature height data projected on the XZ coordinate system (longitudinal section) 3. A vertical section view generation processing section for displaying a transmission line projected on the XZ coordinate system (longitudinal section) while being displayed on the display section with a sign or a color. Equipment for removing removed features of power transmission lines. A symbol corresponding to the determination result of the separation distance corresponding to the position (Yai, Zci) of the predicted feature height data, which is projected on the YZ coordinate system (sectional view). Or a cross-sectional view generation processing unit for displaying a power transmission line projected on the YZ coordinate system (cross-sectional view) while being displayed on the display unit with a sign or a color. Equipment for selecting removed features of transmission line substrate.   The feature is a tree under a transmission line between the first steel tower and the second steel tower, the prediction time is a prediction year, and the predetermined time is one year. The transmission line substrate removal feature selection apparatus according to any one of claims 1 to 5.

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