JP2901040B2 - Drawing design support system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing design support system which displays design drawings of underground facilities such as manholes on a display screen and performs layout design of underground facilities.

[0002]

2. Description of the Related Art Conventionally, in the design of underground equipment, for example, in the underground power distribution diagram creation work, if the equipment is arranged in the ground as shown in the drawing created in addition to the drawing creation work, the equipment is installed in the underground. There is a task to simulate and verify the strength of equipment that can withstand earth pressure and the like and the strength of equipment when pulling in cables. Conventionally, drawing creation and simulation calculation are each performed manually or by separate systems. For example, with a general-purpose CAD system, a picture is created with the support of a computer.
The simulation calculation was performed by manually inputting the arrangement information / outside diameter / inside diameter / information of the equipment into another system. In addition, this simulation calculation formula itself was performed using a well-known cable drawing tension calculation method.

[0003]

The conventional method has a problem in that it takes time to re-input the data of the created drawing to another system or to verify that there is no input error. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and is a drawing capable of accurately and promptly checking whether or not the facilities on the prepared drawing can actually withstand the strength. The purpose is to provide a design support system.

[0005]

According to a first aspect of the present invention, there is provided a drawing design support system for storing attribute data for each specific position of a facility corresponding to the facility displayed on a display screen. 24a, a calculation formula corresponding data extraction unit 20c for extracting data necessary for calculation from the attribute data sequentially designated by the designation unit such as a cursor,
A calculation means 20d for sequentially executing calculations based on the output of the calculation formula corresponding data extraction means 20c and displaying the calculation results on the display screen 21.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the calculation result exceeds an allowable value.
Is determined for each of the above specific positions, and this determination result
Means for displaying on the display screen 21 (safety judgment
With a step 20e) .

A drawing design support system according to a third aspect of the present invention includes, in addition to the configuration of the first aspect, a design table 24b for sequentially inputting data at each specific position designated by a designation means such as a cursor. The arrangement order of the data in the design table 24b is reversed, and the data input later is input to the start address side so that the design table 24b
The data is read out from the first address and the calculation means 20d sequentially calculates the data.

[0008]

According to the first aspect of the present invention, the data storage means 2
4a stores attribute data for each specific position of equipment,
The calculation formula corresponding data extracting means 20c extracts data necessary for calculation from the attribute data sequentially designated by the specifying means such as a cursor, and the calculating means 20d sequentially performs the calculation based on the output of the calculation formula corresponding data extracting means 20c. Execute and display the calculation results.

[0009] In the invention of claim 2, the determining means includes:
Whether or not the calculation result exceeds the permissible value
And the result of this determination is displayed on the display screen.

According to the third aspect of the present invention, the order of arrangement of data in the design table 24b for sequentially inputting data at each specific position designated by a designation means such as a cursor is reversed, and data inputted later is designated. Is input to the first address. The calculating means 20d reads data from the head address of the design table 24b and sequentially calculates the data.

[0011]

【Example】

Embodiment 1 (corresponding to claim 1). FIG. 2 is a configuration block diagram of a computer system according to one embodiment of the present invention. In FIG. 2, reference numeral 20 denotes a CPU for performing arithmetic processing, 21 denotes a display screen for displaying information, 22 denotes a mouse for inputting information, 23 denotes a keyboard for inputting and operating information, and 24 denotes arithmetic processing. Is a main memory for storing information necessary for processing, and a disk device 25 for storing processing results and the like. The computer system having such a configuration has a configuration of a general engineering workstation.

FIG. 1 is a configuration block diagram for explaining the function of the CPU 20 in FIG. 2, that is, the configuration of the drawing design support system of the first embodiment. In FIG. 1, C
The PU 20 includes a display control unit 20a, a facility corresponding data extracting unit 20b, a calculation formula corresponding data extracting unit 20c, and a calculating unit 20d. The display control means 20a controls the display screen 21. The equipment corresponding data extracting means 20b extracts attribute data for each specific position of the equipment specified by the keyboard 23, for example. The calculation formula corresponding data extracting means 20c extracts data necessary for calculation from the design table 24b from the attribute data for each specific position sequentially specified by the specifying means such as the cursor on the display screen 21 of the display screen 21.
The design table 24b is stored in the facility correspondence data extracting means 20.
The attribute data extracted in b is stored in a table in a predetermined format. The calculation means 20d sequentially executes calculations based on the output of the calculation formula corresponding data extraction means 20c, and displays the calculation results on the display screen 21. The calculating means 20d has a plurality of calculation formulas, and performs calculation according to the calculation formula selected by the calculation formula selection data from the keyboard 23, for example. Calculation formula corresponding data extraction means 20c
Provides the calculation formula corresponding data to the calculation means 20d,
The extraction instruction data is supplied from the calculation means 20d to the calculation formula corresponding data extraction means 20c. A calculation is executed by exchanging these data, and a process of displaying the calculation result is performed. The attribute data is input for each specific position of the equipment. 24 is a main memory 24 in FIG.
And stores attribute data for each specific position of the equipment corresponding to the equipment displayed on the display screen 21.

FIG. 3 shows an example of a display screen of the drawing design support system according to the first embodiment. In FIG.
1 is a drawing display area, and 32 is a window provided in a lower area of the display screen 30. In a first embodiment, a design drawing of an underground facility related to a manhole will be described. For simplicity of description, the pipeline is designed only for a straight pipeline without a bent portion. Accordingly, in the window 32, a pipeline designation display section 2a, a manhole designation display section 2b, a cable designation display section 2c, a distribution tower designation display section 2d, an incoming calculation designation display section 2e, and a return designation display section 2f are displayed. By simply arranging a cursor or the like as a designating means in any one of the above and clicking on it, the designated data of any of the pipeline and the manhole can be input.

Next, an outline of a command specified by the keyboard 23 will be described. Pipe line command: A command for specifying the position of two points at which a pipe is laid on the topographic map displayed in the drawing display area with a mouse, and subsequently inputting attribute information necessary for simulation calculation. Manhole command ... A command to indicate the position of one point where a manhole is laid on the topographic map displayed in the drawing display area by using a mouse, and then to input attribute information necessary for simulation calculation. Cable command ・ ・ ・ ・ Pipe to draw cable /
A command to specify the properties of the cable sequentially after specifying the manhole machine in the order of the equipment to pull in the manhole. Distribution tower command: A command to specify the installation position of the distribution tower to which the cable is connected on the topographic map displayed in the drawing display area. Pull-in calculation command: Command to calculate the pull-in tension of the cable specified by the cable command and display the result. Return command: A command to return from the pull-in tension result display to the topographic map display.

FIG. 4 is a screen automatically displayed when the attribute data is input by the above command. The attribute data of each facility is input on this screen. In FIG. 4, the plane coordinates are items that need not be entered on the screen of FIG. 4 because they are automatically set when the position on the topographic map is designated by the above command. As described above, attribute data can be set for each facility such as a pipeline, a manhole, and a cable, and the attribute data can be input for each coordinate position (specific position) for the pipeline and the manhole.

Next, a specific example of the operation will be described with reference to an example in which a drawing as shown in FIG. 5 is created using the hardware and commands having the above-described configuration and simulation of the drawing tension calculation is desired. FIG. 6 shows the manhole M in FIG.
This is a vertical sectional view from 1 to the manhole M2. The pipes L1 and L2 are descending from the manhole M1 to the manhole M2, and it is difficult to descend from the point B on the way. The figure shows a case where it is desired to simulate that the cable K is drawn in from the manhole M1, passes through the conduit L1 and the management L2, and is drawn into the manhole M2. That is, the cable K is connected to the distribution tower N1 above the manhole M1 and the distribution tower N2 above the manhole M2. Thus, the arrangement state of manholes and conduits can be displayed in a plan view or a side view. In this case, these figures can be superimposed on the map.

Next, the operation of the design operation / simulation operation will be described with reference to the flowchart of FIG. In steps 71 and 72, a drawing is created and attributes are input from the keyboard 23 using the commands of the pipeline / manhole / distribution tower.
Thus, the graphic data and the attribute data necessary for the simulation are stored in the data storage means 24a for each equipment section, that is, for each specific position. Next, the drawing of FIG. 5 or FIG. 6 is created on the display screen 21 by the display control means 20a using the graphic data. Each time this operation is performed, the data shown in FIG. 8 is stored in the data storage unit 24a in FIG.
Are sequentially stored. In FIG. 8, the equipment division data 1a is determined and converted into data according to the type of the selected command of pipeline / manhole / distribution tower, and the graphic data 1b is converted into data corresponding to the coordinate position by a plane figure to be drawn. As the attribute data 1c, data input from the attribute input screen as shown in FIG. 4 is directly converted into data.

In FIG. 7, in steps 73 and 74, FIG.
Execute the middle cable command. This specifies the equipment through which the cable should pass, and the equipment corresponding data extracting means 20b
Extracts the attribute data of the equipment through which the specified cable passes from the data storage means 24a. In this example, it is assumed that the pipe L1 is specified first, and then the pipe L2 is specified because the cable K is drawn through the pipe L1 and then the pipe L2 in FIG. Then, the pipelines L1 and L2
Is extracted for the attribute data. In step 75, the operator selects a pull-in calculation command, and the calculating means 20d
And execute the tension calculation. That is, keyboard 2
3. When the calculation formula selection data indicating which calculation is to be performed is input to the calculation means 20d, calculation formula correspondence data necessary for the calculation is extracted by the calculation formula correspondence data extraction means 20c based on the extraction instruction data of the calculation means 20d. Is done. Step 7
In the calculation in 5, a predetermined calculation formula is extracted depending on whether the cable passes through a horizontal portion, a downward inclined portion, or an upward inclined portion.
In step 76, the drawing tension calculation result is displayed. This display content is the content of the design table 24b shown in FIG. 10 described below. In this way, it is possible to input picture data of equipment such as manholes and to display the picture, and to input attribute data corresponding to the displayed equipment. Can be done.

Next, a method of calculating the drawing tension by the calculating means 20d will be described with reference to the flowchart of FIG. In step 91, the equipment through which the cable K passes, that is, the pipe L
1. With respect to the pipe L2, the pipe L1 and L2 which are adjacent to the cable K entrance (inlet) and cable K exit (outlet).
Is determined based on the coordinates of both ends of. Based on this determination result, attribute data of the pipelines L1 and L2 is set in the design table 24b according to the pattern shown in the design table 24b of FIG. The cable length / pull-in tension is not set at this stage. In step 92, the draw-in tension of the outlet is sequentially calculated in accordance with the designated formula (by the formula selection data) according to the burial depth at both ends in the designated facility unit. Is calculated as the length of the conduit between the inlet and outlet in FIG. 10, and is set in the cable length column in FIG. 10, and then the tension is calculated. The calculation formula is determined and used by the processing method in FIG. The calculation formula is shown below.

In the case of a horizontal linear portion: T = μWL Linearly inclined portion (upward): T = WL (μCOSθ + SIN)
θ) Straight slope (downward): T = WL (μCOS θ-SIN
θ) T: Pull-in tension μ: Coefficient of friction W: Cable unit weight L: Cable length θ: Slope angle of pipeline

In the above formula, W is obtained from the attribute of the cable, μ is fixed, and θ is arithmetically calculated from the coordinates of both ends of the pipeline and the burial depth. As described above, the attribute data corresponding to each specific position of the equipment specified by the equipment corresponding data extracting means 20b is set in the design table 24b, and the specific position is sequentially specified by the specifying means such as a cursor. Data is sequentially stored in the designated order from the start address of the design table 24b, and data required for calculation is extracted from the start address of the design table 24b by the calculation formula corresponding data extracting means 20c, and calculated for each of the specific positions. The result is displayed on the display screen 21 via the display control means 20a. This calculation is performed in such a way that the previous value is accumulated to the current value.

Embodiment 2 (corresponding to claim 2). In the first embodiment, the content shown in FIG. 10 is simply displayed on the screen as the result of the pull-in calculation. However, in the second embodiment, the allowable pull-in tension can be determined by the following equation.

Allowable tension of cable = a × number of cable cores × cross-sectional area of cable conductor Aluminum: a = 4 / square millimeter Copper: a = 7 / square millimeter

In the second embodiment, as shown in FIG. 11, a tension calculating formula storage means 24c for storing the allowable tension calculating formula.
Further only setting, performs the allowable tension calculated based on the attribute data of the cable attributes. Also, as shown in FIG.
A safety determination means 20e is provided in 0d, and a determination result as to whether or not the equipment is safe under the allowable tension at the drawer of each facility is displayed on the display screen 21. FIG. 12 shows the screen configuration.

According to the second embodiment, the tension calculation formula storage means 2 is based on the calculation formula selection data from the keyboard 23.
When the allowable tension calculation formula is acquired from 4c, the calculating means 20
d executes the computation in ipecac from equation corresponding data extracting means 20c the data necessary for the calculation, YES this result safety determination means 20 e is determined, the determination result or the like to the frame 10m of the pattern of FIG. 12 Or it is displayed in the form of NO.

Embodiment 3 (corresponding to claim 3). In the first embodiment, only the pull-in tension calculation in the negative direction is performed. However, as shown in FIG. 12, a command “reverse pull-in” for displaying the calculation result at the time of reverse pull-in is provided, and as shown in FIG. The reverse draw-in setting data is input from the keyboard 23 to the reverse draw-in processing means 20f, and the processing of step 141 in FIG. 14 is performed by the reverse draw-in processing means 20f. In step 141, the "reverse entry" command is generated by the reverse entry processing means 20f once.
Is rearranged so that the data inputted later comes to the head address, and the entrance /
The contents of the outlet and the column are exchanged, and the processing of step 142 (the same as the processing of step 92 in FIG. 9) is performed. That is, the tension applied to the cable K during the drawing process is equal to the length of the pipe L.
The case of drawing in along the upward direction is larger than the case of drawing in along the downward direction of the inclination of 1, L2. In the first embodiment, the tension of the cable K can be obtained by designating data using a designation unit such as a cursor in the order of the pipeline L1 to the pipeline L2.

However, according to the third embodiment, the data arrangement in the design table 24b is reversed so that the data inputted later comes to the head address. Thus, when the calculation unit 20d sequentially calculates from the start address, the calculation is performed from data input later. This means that calculations can be performed when the drawing direction is set in the direction from the pipe L2 to the pipe L1. This saves the trouble of designating the pipe line L2 to the pipe line L1 with a specifying unit such as a cursor.

Embodiment 4 (corresponding to claims 1, 2 and 3). In the above-described first to third embodiments, the pipeline is directed only to the pipeline extending in a straight line. However, as shown in FIG.
FIG. 16 shows such data, that is, the pipe bending radius data, the center coordinate data for the bending radius, the embedded depth data of the center coordinates corresponding to the bending radius, and the inclination angle data when the bending radius is inclined, as shown in FIG. 23, the data can be received by the auxiliary data storage means 24c in the data storage means 24a. It is possible to calculate the drawing tension by reading from 24c. At this time, the items on the attribute input screen of the pipeline, which are targeted only for the straight pipeline in FIG. 4, have a screen configuration in which the following attribute input items are similarly added.
In the pull-in calculation method (step 92), a configuration is adopted in which the type of installation is determined and a calculation formula corresponding thereto is added.・ Type of installation ・ ・ ・ ・ ・ ・ The following types. Horizontal straight part / straight inclined part / vertical bent part (convex curve) / vertical bent part (concave curve)
/ Vertical bent part (convex part) of curved part in slope / Vertical bent part (concave part) of curved part in slope ・ Tube bending radius ・ Plane coordinates and burying depth of bending center point corresponding to pipe bending radius .Inclination angle when the pipe bend is inclined

Embodiment 5 (corresponding to claims 1, 2 and 3). In the first to fourth embodiments, only the pull-in tension of the cable is calculated by simulation. However, when the cable is bent and laid along the pipeline, side pressure is generated. This lateral pressure P
Can be calculated by the following formula using the drawing tension T of the outlet of the bending pipe and the bending radius R of the pipe when the drawing tension of the bending pipe is calculated. (The side pressure itself is generated in the entire bent portion, but since the point where the pulling tension is maximum at the bent portion is the outlet, the side pressure of the bent portion is checked by the following formula.)

P = T / R

Therefore, in the fifth embodiment, as shown in FIG. 17, the lateral pressure calculation formula storage means 24 for storing the calculation formula of this lateral pressure.
g is provided, the calculation means 20d reads the calculation formula, and extracts the equipment data necessary for the calculation from the calculation formula corresponding data extraction means 20c to execute the calculation.
In this case, the data type of the data storage means 24a of the main memory 24 and the configuration of the cable attribute screen are provided so that the following cable types can be additionally input in the attribute of the cable, and the calculation means 20d is provided with a pass / fail determination means 20g. Thus, the maximum allowable side pressure is automatically determined for each cable type. FIG. 18 shows a screen configuration example in which the above-described side pressure, allowable side pressure, and acceptance / rejection determination for the allowable side pressure of the bending pipe section are performed and displayed.

· Vinyl sheath cable (300 kg /
m) ・ Chloroprene sheathed cable (300kg / m) ・ Triplex CV cable (250kg / m) The allowable side pressure value for the above cable type has a certain width, but for example, the parenthesized values above indicate the safety side. A pass / fail judgment is made using the numerical value as the allowable side pressure value.

[0033]

As described above, according to the first aspect of the present invention,
Since the data required for calculation was extracted from the attribute data for each specific location of the equipment, the calculation was executed sequentially based on the extracted data, and the calculation results were displayed on the display screen. An effect is obtained that it is possible to accurately and promptly check whether the above equipment can actually withstand the strength.

According to the second aspect of the present invention, the structure of the first aspect is provided.
In addition to the above, specify whether the calculation result exceeds the allowable value
Is determined for each position, and this determination result is displayed on the display screen.
Since the determination means for displaying is provided, in addition to the effect of claim 1,
Te, effect that each equipment can be found at the glance whether the safely.

According to the third aspect of the present invention, the configuration of the first aspect is provided.
Since the arrangement order of the data in the design table is set in the opposite direction, the data input later is input to the start address side, so that the data is read from the start address of the design table and sequentially calculated. For example, the pass / fail when the cable is pulled in the reverse direction can be immediately determined,
In addition to the effect of the first aspect, there is obtained an effect that work efficiency can be greatly improved with respect to drawing creation and verification.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of a drawing design support system according to a first embodiment of the present invention.

FIG. 2 is a configuration block diagram of a computer system according to an embodiment of the present invention.

FIG. 3 is a diagram illustrating an example of a display screen according to the first embodiment.

FIG. 4 is an explanatory diagram of an attribute data input screen according to the first embodiment.

FIG. 5 is a diagram illustrating an example of an underground power distribution plan according to the first embodiment.

FIG. 6 is a diagram showing an example of an underground power distribution vertical section in the first embodiment.

FIG. 7 is a flowchart of a design operation / simulation operation in the first embodiment.

FIG. 8 is an explanatory diagram of the format of drawing data in the first embodiment.

FIG. 9 is a flowchart of a pull-in calculation in the first embodiment.

FIG. 10 is a diagram showing contents of a design table in the first embodiment.

FIG. 11 is a configuration block diagram of a drawing design support system according to a second embodiment of the present invention.

FIG. 12 is a diagram illustrating a calculation result display screen with an allowable withdrawal determination column according to the second embodiment.

FIG. 13 is a configuration block diagram of a drawing design support system according to a third embodiment of the present invention.

FIG. 14 is a flowchart of a reverse-pull-in calculation method according to the third embodiment.

FIG. 15 is a diagram illustrating the format of drawing data that allows calculation of the pulling tension of a bending pipe in the third embodiment.

FIG. 16 is a configuration block diagram of a drawing design support system according to a fourth embodiment of the present invention.

FIG. 17 is a configuration block diagram of a drawing design support system according to a fifth embodiment of the present invention.

FIG. 18 is a diagram illustrating a screen configuration example according to the fifth embodiment.

[Explanation of symbols]

 20c Calculation formula corresponding data extraction means 20d Calculation means 21 Display screen 20e Safety judgment means 24b Design table 20f Reverse entry processing means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G06F 17/50

Claims (3)

(57) [Claims] 1. A computer system capable of displaying a design drawing of an underground facility such as a manhole on a display screen, wherein attribute data for each specific position of the facility is associated with the facility displayed on the display screen. A data storage unit for storing data, and a calculation formula corresponding data extraction unit for extracting data necessary for calculation from the attribute data for each specific position sequentially designated by the designation unit such as a cursor on the display screen,
A drawing means for sequentially executing calculations based on the output of the calculation formula correspondence data extracting means and displaying the calculation results on the display screen. 2. A computer system capable of displaying a design drawing of an underground facility such as a manhole on a display screen, wherein attribute data for each specific position of the facility is associated with the facility displayed on the display screen. A data storage unit for storing data, and a calculation formula corresponding data extraction unit for extracting data necessary for calculation from the attribute data for each specific position sequentially designated by the designation unit such as a cursor on the display screen,
A calculating means for displaying the calculation formula corresponding data extracting means sequentially executed calculation result calculated based on the output of on the display screen, whether the calculation result exceeds the allowable value is determined for each of the specific position The judgment result is displayed on the above display screen.
Drawing design support system characterized by comprising a Shimesuru determining means. 3. A computer system capable of displaying a design drawing of an underground facility such as a manhole on a display screen, wherein attribute data for each specific position of the facility is associated with the facility displayed on the display screen. A data storage unit for storing data, and a calculation formula corresponding data extraction unit for extracting data necessary for calculation from the attribute data for each specific position sequentially designated by the designation unit such as a cursor on the display screen,
Calculating means for sequentially executing the calculation based on the output of the calculation formula corresponding data extracting means and displaying the calculation result on the display screen, and sequentially outputting data for each specific position designated by the designation means such as the cursor. A design table to be input is provided, the arrangement order of the data in the design table is set in the opposite direction, and data input later is read out from the start address of the design table so that the input data is input to the start address side, and the above calculation is performed. A drawing design support system characterized in that the means calculates sequentially.