JPH04317853A - Method of forming running curve - Google Patents

Abstract

PURPOSE:To provide high working property in a train diagram forming system in which the train speed of each position is automatically formed by conducting distance reverse operation up to a point at which the operating speed reaches a limit by use of a designated point as an end point to draw a running curve component. CONSTITUTION:Taking the end point speed of final down grades 5-1 to 5-6 in the change section of a limit speed 2, a curve is formed by means of speed reverse operation up to a point at which the limit speed is changed, a curve coincident with the limit speed 2 is formed outside the above range, and the two curves are synthesized to form a notch-off limit curve 1. A brake limit curve 8 is formed by means of speed reverse operation by taking the speed of an arrival station 4 point as zero or the start point speed of the limit speed recessed part as the limit speed. In accordance with the selection of a power running curve 9-1 to 9-4 and designation of a starting station position by an operator, the power running curve is drawn from a starting station 3, and also, according to the selection of a running curve and the drawing start position designation of this running curve, the running curve is drawn by means of distance reverse operation.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of creating a running curve for automatically creating train speeds at each position in a train diagram creation system.

0002

2. Description of the Related Art Conventionally, there has been a method for creating a running curve in which an expert can create and modify a running curve by trial and error while interacting with a computer via a display, mouse, or keyboard.

0003

[Problems to be Solved by the Invention] In the conventional running curve creation method, selection of running curve components, designation of the drawing start point and drawing end point of the running curve components, and erasing of unnecessary running curve parts are performed. The computer must be instructed to specify the start point and end point of erasure, etc., and the operator must determine the point at which the notch is turned off and the point at which the brake is applied through trial and error, creating a driving curve. The problem was that it took a long time.

[0004] This invention was made to solve the above-mentioned problems, and aims to provide a method for creating a running curve that is easy to operate and can create a running curve in a short period of time. do.

[0005]

[Means for Solving the Problems] The method for creating a running curve according to the present invention is to prevent the train operating speed from exceeding the speed limit on a downhill slope by determining the terminal speed of the last slope within the speed limit range or the terminal point of each slope. A notch-off limit curve calculated in the opposite direction to the train running direction with the speed as the limit speed and a brake limit curve calculated in the opposite direction to the train running direction so that the target speed is reached at the target position when the brake is applied are calculated using a calculator. At the same time, the operator selects a running curve component and specifies the starting station position to draw the running curve component from the departure station, and the operator selects a running curve component and specifies the starting station position. By specifying the drawing start position (end point) of the curve component, the driving curve component is drawn.

[0006]

[Function] In this invention, the operating curve component has the end point specified by the operator, the point where the train operating speed reaches the limit, and the point where the speed limit changes where the train speed exceeds the speed limit. Alternatively, the distance is drawn by inverse calculation to the point where the train curve at the departure station is reached or the point where the train operating speed reaches zero.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a flowchart showing an embodiment of the present invention, FIG. 2 is a diagram showing a method for creating a notch-off limit curve, FIG. 3 is a diagram showing a method for creating a brake limit curve, and FIG. 4 is a diagram showing a method for creating a brake limit curve. It is a diagram showing types of constituent elements,
FIG. 5 is a diagram showing a method for drawing running curve elements, FIG. 6 is a diagram showing a method for drawing running curve components, and FIG. 7 is a diagram showing a connection method between running curve components. 8 is a diagram showing an example of a running curve when the running curve is created according to this embodiment. In the figure, 1 is the notch-off limit curve;
2 is the speed limit, 3 is the departure station, 4 is the arrival station, 5-1, 5-
2, 5-3, 5-4, 5-5, 5-6 are downhill, 6 is horizontal distance axis, 7 is vertical speed axis, 8 is brake limit curve, 9, 9-1, 9 -2, 9-3, 9-4 are power curves, which are one of the components of the operating curve, 10, 10-1
, 10-2, 10-3, 10-4, 10-5 are brake curves, which are one of the components of the operating curve, 11-1, 11
-2 and 11-3 are coasting curves that are one of the components of the operating curve.

The operation of one embodiment of the present invention will be explained using the flowchart of FIG. 1 and with reference to FIGS. 2 to 8. First, as a preparation for creating an operating curve, a notch-off limit curve and a brake limit curve are created on a computer.

Step 21: Creating a notch-off limit curve using a computer FIG. 2 shows a method for creating a notch-off limit curve. In the figure, the end point speeds of the last downhill slopes 5-1, 5-2, 5-3, 5-4, 5-5, and 5-6 of the change section of speed limit 2 are taken as the limit speeds (point A, point B). , point C, point D, E
point), up to the point where the speed limit changes by inverse speed calculation in the direction opposite to the train running direction (train acceleration, track resistance, etc. at each speed are calculation parameters) (point F, point G, point H), Or until the speed limit is reached (point I, J
point) Create a curve. In cases other than the above, a curve matching speed limit 2 is created. These two curves are combined to create a notch-off limit curve 1. The thickly drawn curve in the figure is the notch-off limit curve 1. If the notch is turned off at a speed higher than this notch-off limit curve 1, the train will be accelerated on a downhill slope and will exceed the speed limit. Therefore, when a train travels at a speed that exceeds the notch-off limit curve 1 (of course, it is still within the speed limit), the brakes must be applied before or at the point where the speed limit is reached.

Step 22: Creating a brake limit curve using a computer FIG. 3 shows a method for creating a brake limit curve. In the figure, the speed at the 4 points at the arrival station (point A) is zero, or the speed at the starting point of the speed limit concave is the speed limit (B
point, C point, D point, E point) Up to the point where the speed limit changes (F A brake limit curve 8 is created until the speed limit is reached (Point G, Point H, Point I), or until the three departure station points (Point J) are reached. Note that a stop brake is used to stop the train between points A and F, and a limited brake, which is a gentle brake, is used at other times. The thickened curve in the figure is the brake limit curve 8.
It is. If the brake is applied at a speed greater than this brake limit curve 8, the target speed cannot be obtained at the target position. Therefore, the train will always have a brake limit curve of 8
The brakes must be applied at some point along the line. The operator must specify the drawing start position (end point) of the operating curve component in the range surrounded by the brake limit curve 8 and the speed limit (the hatched range in FIG. 3).

[0011] After the above preparations are completed, the computer creates a running curve in an interactive manner with the operator. The operating curve creation procedure will be explained below. Step 23: First, the operator selects the line he wants to draw from among the running curve components in order to move the train from the departure station. FIG. 4 shows an example of the operating curve components prepared on the computer. There are six types of operating curve components. When accelerating a train, the thrust of the motor differs depending on the notch, so the power row is divided into three types (power row with 2 notches, power row with 3 notches, and power row with 4 notches). In addition, the brakes used to decelerate a train are divided into two types (limiting brakes...gentle brakes, stopping brakes...
・Prepare the brakes used to stop the train. Furthermore, a coasting curve component for coasting the train is prepared. Step 24: Next, the operator specifies the drawing start position (starting point...departure station) of the line curve component selected in step 23. Step 25: The calculator calculates the train speed using the momentary motor thrust, running resistance, etc., and calculates the train speed from the specified starting point to the point where the train operating speed reaches the speed limit or when the train speed exceeds the speed limit. The traveling curve components are drawn until the change point of the speed limit or the brake limit curve is reached, or until the train operating speed reaches zero speed. This running curve is used as one of the limits for determining the drawing end point of the curve when drawing the subsequent operating curve components. The procedure of steps 23 to 25 will be explained using FIG. 5. Initially, the operator selects one of three types of rows as a running curve component. Then, the departure station 3 (zero speed point . . . point A) is designated as the drawing start position of the row curve 9 with the mouse pick. When the above selections and specifications are given to the computer, the computer calculates the train speed by train using the momentary motor thrust, running resistance, etc., and the train operating speed is set to the limit speed from the specified starting point (point A). The train curve 9 is drawn until it reaches a point where the train speed reaches a point where the speed limit changes or the brake limit curve where the train speed exceeds the speed limit, or until the train operating speed reaches zero speed (Fig. 5, it is drawn up to the point where the brake limit curve is reached (point B)).

Step 26: The operator selects a stop brake from among the running curve components in order to draw a stop brake curve with the arrival station as the end point. The selection method is the same as step 23. Step 27: Next, the operator specifies the drawing start position (end point...arrival station) of the stop brake curve element selected in step 26. Step 28: The calculator calculates the train speed using the momentary motor thrust, running resistance, etc., and calculates the train speed from the designated end point to the point where the train operating speed reaches the speed limit or when the train speed exceeds the speed limit. The stop brake curve component is drawn until the stop brake curve reaches the point where the speed limit changes or the train operating speed reaches zero, or until the train travel curve 9 created above is reached. The procedure of steps 26 to 28 will be explained using FIG. 6. Initially, the operator selects, for example, a stop brake as a driving curve component. Then, the destination station 4 (zero speed point . . . point A) is specified as the drawing start position of the brake curve 10 using the mouse pick. When the above selection and designation commands are given to the computer, the computer uses the momentary motor thrust, running resistance, etc. to calculate the train speed due to the stop brake, and the specified terminal point (A
point) to the point where the train operating speed reaches the speed limit, or the point where the speed limit changes where the train speed exceeds the speed limit, or until the train operating speed reaches zero speed, or until the train reaches the curve 9. The corresponding brake curve 1 until the point where
0 (draw up to the point where the speed limit changes (point B) where the train speed exceeds the limit in Figure 6).

Step 29: The operator selects a new running curve component to connect the new running curve component to the running curve component. The selection method is the same as step 23. Step 30: Next, the operator specifies a new operating curve component drawing start position (end point) along the old operating curve component curve. Step 31: The computer calculates the train speed using the momentary motor thrust, running resistance, etc., and calculates the train speed from the specified end point to the point where the train operating speed reaches the speed limit, or when the train speed exceeds the speed limit. The running curve components are drawn until the speed limit changes or the train operating speed reaches zero, or until the running curve 9 created above is reached. Further, the computer erases a part of the old operating curve component before the newly designated operating curve component drawing start position (end point). The procedure of steps 29 to 30 will be explained using FIG. 7. Since the brake curve 10 has been created up to step 28, the operator selects the operating curve component to be drawn next (assuming that coasting is selected here). Then, an arbitrary point (point C) along the brake curve 10 is specified as the drawing start position (end point) of the coasting curve 11. When the above selection and designation commands are given to the computer, the computer calculates the train speed due to coasting using the momentary motor thrust, running resistance, etc., and from the specified end point (point C), the train operating speed is reduced to the limit speed. or the point where the speed limit changes where the train speed exceeds the speed limit, or until the train operating speed reaches zero, or until the coasting curve 9 created above is reached. Draw components. (In FIG. 7, the map is drawn up to the point where the speed limit changes (point D) where the train speed exceeds the speed limit.) In addition, the computer calculates the old brake curve component part (B) before the newly specified coasting curve drawing start position (point C).
(curve between point C and point C). As described above, the coasting curve 11 is connected to the brake curve 10. Next, in step 32, it is determined whether or not the creation of the operating curve has been completed. If it has been completed, the entire operation is completed, and if it has not been completed, the procedure from step 29 to step 31 is repeated to arrive at the destination. It is possible to create a driving curve from the station to the departure station. Note that the notch-off limit curve is used so that the operator can easily determine the speed at which the vehicle can coast without applying the brakes. An example of creating a running curve created in this way is shown in FIG.

[0014] In the above embodiment, even if the speed limit does not match the speed limit due to physical track conditions, the same effect can be achieved even if a value is appropriately selected within the gist of this description. Further, although the notch-off limit curve is used to facilitate the operator's judgment, the same effect can be achieved even if the notch-off limit curve is used as the drawing end point when the computer draws the operating curve components. Further, although the number of types of operating curve components is set to six, the same effect can be achieved even if the number of types is increased or decreased. Further, although the drawing start position is specified by using a mouse pick, other methods can have the same effect. Furthermore, when connecting a new operating curve component to an old operating curve component, we specified the drawing start position (end point) of the new operating curve component along the old operating curve component curve. It is not necessary to strictly match the values of the old operating curve component curves, and the same effect can be achieved by specifying either position or speed.

[0015]

As described above, according to the present invention, the speed at the end of the last slope within the speed limit range or the speed at the end of each slope is restricted so that the train operating speed does not exceed the speed limit on a slope with a downward slope. The step of creating a notch-off limit curve in advance using a computer, which is calculated in the opposite direction to the train running direction as the speed, and the brake calculated in the opposite direction to the train running direction so that the target speed will be achieved at the target position when the brake is applied. A step of creating a limit curve in advance using a computer, a step of drawing a line curve component from the departure station by selecting a line curve component from the operator and specifying the position of the departure station, and a step of configuring the line curve from the operator. The method includes the step of selecting an element and specifying the drawing start position (end point) of the driving curve component, and then drawing the driving curve component by inverse distance calculation with the specified position as the end point, which improves operability. Moreover, the present invention has the effect that a running curve can be created in a shorter time than in the past.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing one embodiment of the present invention.

FIG. 2 is a diagram showing a method of creating a notch-off limit curve.

FIG. 3 is a diagram showing a method of creating a brake limit curve.

FIG. 4 is a diagram showing types of operating curve components.

FIG. 5 is a diagram illustrating a method of drawing a square curve element.

FIG. 6 is a diagram showing a method of drawing operating curve components.

FIG. 7 is a diagram illustrating a connection method between operating curve components.

FIG. 8 is a diagram showing an example of a running curve when the running curve is created according to an embodiment of the present invention.

[Explanation of symbols]

1 Notch-off limit curve 8 Brake limit curve 9, 9-1, 9-2, 9-3, 9-4 Ka line curve 10, 10-1, 10-2, 10-3, 10-4, 10
-5 Brake curve

Claims (1)

[Claims] Claim 1: A method for creating a running curve in an interactive manner between an operator and a computer in planning work for determining the train operating speed at each location between stations, the method comprising: A step in which a notch-off limit curve is created in advance using a computer, calculated in the opposite direction to the train running direction, with the end point speed of the last slope within the speed limit range or the end point speed of each slope as the speed limit, and the step of applying the brakes. A step in which a brake limit curve calculated in the opposite direction to the train running direction is created in advance by a computer so that the target speed is achieved at the target position when The step of drawing a running curve component from the departure station based on the specification, the selection of a running curve component by the operator, and the designation of the drawing start position (end point) of the running curve component, the distance from the specified position to the end point. A method for creating a running curve, comprising the step of drawing the running curve component by inverse calculation.