JPH0814937A - Graph drawing method in FDR analysis device - Google Patents

Abstract

(57) [Abstract] [Purpose] In the rough drawing, the graph showing the fluctuation range of the flight data within the drawing unit time is drawn so that the location where the detailed drawing should be performed can be recognized in the rough drawing stage, (EN) Provided is a graph drawing method in an FDR analysis device capable of easily and accurately analyzing data. [Structure] With a specific unit time as a drawing unit in the x-axis direction,
The data reading means 21 reads the flight data for each specific unit time from the storage device 3, the maximum value judging means 22 and the minimum value judging means 23 find the maximum value and the minimum value of the read flight data, and the vertical line creating means 24. In the FDR analysis device that creates graph data of a line connecting the maximum and minimum drawing points at the corresponding drawing unit position and outputs the graph data to the drawing control means 14 to cause the display device 4 or the printer 5 to draw the graph data. Is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for accident investigation and analysis of aircraft, flight training and maintenance training of aircraft.
The present invention relates to a graph drawing method for displaying the relationship between flight data and elapsed time in a DR analysis device, and in particular, a graph showing a fluctuation range of flight data without thinning out flight data in drawing a graph showing an outline of transition of flight data. The present invention relates to a graph drawing method in an FDR analysis device capable of performing a simple and accurate FDR analysis by drawing.

[0002]

2. Description of the Related Art First, a conventional flight data recording device (Flig
The ht Data Recorder (FDR) analyzer will be described with reference to FIG. FIG. 5 is a configuration block diagram of a conventional FDR analysis device. As shown in FIG. 5, a conventional FDR analysis device 1 includes an interface device 2 for reading flight data from an FDR, a data recording device 3 for storing the read flight data, and a display device for displaying a graph of the flight data. 4 and printer 5 for printing flight data graphs
And an input device 6 for inputting an instruction such as a drawing method of a graph to be displayed or printed and a range of drawing time, and a control device 7 for performing flight data input, graph creation processing and output control.

Here, the data recording device 3 is an external storage device such as a hard disk capable of storing a large amount of data, and the display device 4 is a display device such as a graphic display capable of dot display. The printer 5 is a printing device capable of dot printing. The control device 7 is a general-purpose computer such as a personal computer or a workstation that creates a graph based on the read flight data and outputs the graph to the display device 4 or the printer 5 to display or print.

In the conventional FDR analysis device, the FD
The control device 7 controls the interface device 2 to collect flight data collected by R at regular sampling intervals (for example, 1 second intervals).
Data is stored in the data recording device 3 via the input device 6, and the data is read from the data recording device 3 based on an instruction such as a graph drawing method and a drawing time range input from the input device 6 to execute a graph creation process. Then, the data is output to the display device 4 and the printer 5, and displayed or printed.

Next, a graph drawing method in the conventional FDR analysis apparatus will be described with reference to FIG. FIG. 6 is an explanatory diagram showing a graph drawing example by a graph drawing method in a conventional FDR analysis device. In a conventional FDR analysis device, the value of flight data collected by FDR is plotted on the vertical axis (y
Axis) and the elapsed time on the horizontal axis (x axis) to draw (display and print) the relationship. As a method of drawing a small scale of the time axis and drawing detailed changes of flight data, There are two drawing methods, a rough drawing in which a large scale is taken and changes in flight data are roughly drawn. Then, as a normal FDR analysis procedure by the operator, it is general to perform a rough drawing to check a rough transition of flight data, and to perform a detailed drawing only on a portion determined to be abnormal or suspected to be abnormal in the rough drawing. Target.

Here, in the case of detailed drawing, specifically, the time (drawing unit time) of one dot on the horizontal time axis is FD.
The graph is created by taking the same sampling interval as the flight data collected in R and drawing dots corresponding to all data values of the flight data while shifting the time axis.

That is, for example, when the FDR collects flight data at a sampling interval of 1 second, all the flight data are drawn in order with 1 dot in the horizontal direction of the screen = 1 second. In the case of a screen that can display a graph with 840 dots in one direction, 840 seconds = 14 per screen
The minute flight data will be displayed.

On the other hand, in the case of rough drawing, the time of one dot on the horizontal time axis (drawing unit time) is set larger than the sampling interval of the flight data collected by FDR, and the elapsed time of the flight data drawn on one screen. Is made longer, specifically, only the data of the drawing unit time interval is extracted from all the flight data collected by the FDR and drawn, that is,
The graph is created by thinning out the data in the meantime.

That is, for example, when the flight data collected by the FDR at a sampling interval of 1 second is roughly displayed with the horizontal time axis of the screen being 1 dot = 5 seconds,
For example, in the case of a screen capable of displaying a graph with 840 dots in the horizontal direction by extracting and drawing every four flight data from the flight data stored in the data storage device 840 × 5 seconds = 70 in one screen. The minute flight data will be displayed.

As a result, in detail drawing, for example, FIG.
When the flight data drawn as shown in FIG. 6 is roughly drawn, it may happen that the flight data is drawn as shown in FIG.

[0011]

However, in the graph drawing method in the above-mentioned conventional FDR analysis apparatus, the flight data collected by the FDR is thinned out to create a graph in the rough drawing, so that the significant data is included in the thinned out data. When there is a change in flight data, it cannot be detected in the rough drawing, and it is overlooked without performing detailed drawing, and it is not possible to analyze the flight data accurately, and if the whole is drawn in detail In that case, there is a problem that the processing takes time.

The present invention has been made in view of the above-mentioned circumstances, and in the rough drawing, a graph showing the fluctuation range of flight data within a drawing unit time is drawn, so that a detailed drawing should be performed in the rough drawing stage. It is an object of the present invention to provide a graph drawing method in an FDR analysis device, which recognizes and draws only that portion in detail and can easily and accurately analyze flight data.

[0013]

According to the present invention for solving the problems of the above-mentioned conventional example, flight data is read from a recording device and the value of the flight data is set to y with respect to time in the x-axis direction.
In the graph drawing method in the FDR analysis device that draws in the axial direction, a specific unit time is set as a drawing unit in the x-axis direction,
The flight data for each specific unit time is read from the storage device, the maximum value and the minimum value of the read flight data are obtained, and the drawing point of the maximum value and the drawing point of the minimum value are obtained at the position of the corresponding drawing unit. It is characterized by drawing a line connecting the two.

[0014]

According to the present invention, the flight data for each specific unit time is read from the storage device using the specific unit time as the drawing unit in the x-axis direction, the maximum value and the minimum value of the read flight data are obtained, and the corresponding drawing is performed. Since the graph drawing method in the FDR analysis device draws a line connecting the maximum value and the minimum value drawing points at a unit position, a specific unit time is set as one drawing unit and a change in flight data for a long time on one screen is changed. The outline can be easily grasped, and if the flight data fluctuates within a specific unit time, the fluctuation width is drawn as a line, so the fluctuations in the flight data can be grasped, and FDR analysis can be performed easily and easily. Can be done accurately.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. A graph drawing method in an FDR analysis device according to an embodiment of the present invention is a time interval (drawing unit time) represented by one dot on a time axis in schematic drawing of flight data.
It is a method of drawing a graph that can recognize the fluctuation range of flight data within a drawing unit time by determining the maximum value and the minimum value from multiple flight data in the drawing and drawing a vertical line connecting the maximum value and the minimum value. .

The FDR analysis device of this embodiment is basically the same as the conventional one, and as shown in FIG. 6, an interface device 2 for reading flight data from the FDR and a data recording device for storing the read flight data. 3, a display device 4 for displaying a graph of flight data, a printer 5 for printing a graph of flight data, and an input device 6 for inputting an instruction such as a drawing method of a graph to be displayed or printed and a range of drawing time. , A control device 7 for performing flight data input, graph creation processing, and output (drawing) control.
However, the graph drawing method in the control device 7 is different from the conventional one.

Also in the FDR analysis apparatus of the present embodiment, the flight data collected by the FDR at a constant sampling interval (for example, 1 second interval) is read by the control unit 7 via the interface unit 2 and the data is temporarily read. The data is stored in the recording device 3, and data is read from the data recording device 3 based on an instruction such as a graph drawing method and a drawing time range input from the input device 6 to perform a graph creation process. It is adapted to output to 5 and display or print.

Next, a graph drawing method in the FDR analysis apparatus of this embodiment will be described with reference to FIG. FIG.
FIG. 6 is an explanatory diagram showing a graph drawing example of a schematic drawing by a graph drawing method in the FDR analysis device according to the embodiment of the present invention. In the FDR analysis device of this embodiment, the FDR
As a method of plotting (displaying and printing) the relationship of the flight data values collected in step 1 on the vertical axis (y axis) and the elapsed time on the horizontal axis (x axis), detailed drawing similar to the conventional Instead of the schematic drawing, a new schematic drawing method, which is a characteristic part of this embodiment, is provided. Then, in the normal FDR analysis procedure by the operator, a new schematic drawing of the present embodiment is performed to confirm a rough transition of the flight data, and an abnormal point or a suspected abnormal point can be easily detected. It is possible to easily and accurately analyze the flight data collected by the FDR by performing detailed drawing only on the detected abnormal portion.

In the present embodiment, the specific method of detailed drawing is exactly the same as the conventional one, and one dot on the horizontal time axis of the display screen is associated with the sampling time interval of flight data collected by FDR. All the data values of the flight data are drawn while shifting the time axis to create a graph.

On the other hand, the specific method of schematic drawing, which is a characteristic part of the present embodiment, is such that one dot time (drawing unit time) on the horizontal time axis is set to be larger than the sampling interval of flight data collected by FDR. , The maximum value and the minimum value of the flight data within each drawing unit time are determined, and a graph in which a vertical line connecting the maximum value and the minimum value is repeatedly drawn is created and displayed. That is, for example, when the flight data collected by the FDR at a sampling interval of 1 second is roughly displayed with the horizontal time axis of the screen being 1 dot = 5 seconds, the data storage device 3
Five pieces of flight data are extracted from the flight data stored in, the maximum value and the minimum value of the five flight data are determined, a vertical straight line connecting the maximum value and the minimum value is drawn, and this operation is repeated. .

When a graph is drawn by roughly drawing the graph drawing method of this embodiment, for example, as shown in FIG. 1, the part where the flight data value is stable is represented by a straight line in the x direction and drawn. If there is fluctuation within the unit time, a vertical line is drawn to show the fluctuation range (maximum value and minimum value) in the y direction, so the fluctuation range in particular exceeds the upper or lower limit of the flight data. The operator can determine that a defective portion is an abnormal portion and perform a detailed drawing operation on that portion.

Next, means for realizing the graph drawing method of this embodiment will be described with reference to FIG. FIG. 2 is a functional configuration block diagram relating to graph creation and drawing control in the control device of the FDR analysis device according to this embodiment. The control unit 7 (shown in FIG. 5) of the FDR analysis device that realizes the graph drawing method of the present embodiment has a functional configuration relating to graph data creation and drawing control, as shown in FIG. Data input means 11 to read
A data table 12 for temporarily storing the read flight data, a drawing method reading means 13 for reading the drawing method input from the input device 6, and an actual display device 4 or printer 5 based on the created graph data. The drawing control means 14 for controlling the drawing control and the graph data creating means 15 for creating the graph data in accordance with the read drawing method. The inside of the graph data creating means 15 is a schematic graph creating means 20. It is divided into a detailed graph creating means 30.

In particular, inside the schematic graph creating means 20, which is a characteristic part of the present embodiment, flight data within the drawing unit time is read from the data recording device 3 via the data input means 11, and further written in the data table 12. Data reading means 21 for storing data, and maximum value judging means 2 for judging the maximum value of the data stored in the data table 12
2, the minimum value determination means 23 for determining the minimum value of the data stored in the data table 12, and the drawing control means 14 for the vertical line graph data connecting the determined maximum and minimum values.
And a vertical line creating means 24 for outputting to.

The maximum value determination means 22 and the minimum value determination means 23 will be described later with reference to FIG. 3 in order to determine the maximum value and the minimum value of the data (DATA (i)) stored in the data table 12. MAX that stores the maximum value
And a variable MIN for storing the minimum value and the data table 1
The variable i is used as a counter for sequentially fetching data from 2.

Next, the processing operation in the schematic graph creating means 20, which is a characteristic part of the graph drawing method of the FDR analysis apparatus of this embodiment, will be described in detail with reference to FIG. FIG.
Is a schematic graph creating means 2 of the FDR analysis device of this embodiment.
It is a flowchart figure which shows the processing operation in 0. In addition, in FIG. 3, the flight data collected by the FDR at a sampling interval of 1 second is plotted on the horizontal time axis of the screen as 1 dot =
It is a flowchart of the process regarding one drawing unit time when displaying roughly as 5 seconds. Therefore, DATA
The i in (i) is i = 1 to 5.

In the processing operation of the schematic graph creating means 20 of this embodiment, first, as the operation of the data reading means 21, five data are read from the data storage section 3 via the data input means 11, and DATA (1 ) ~
The data is stored in DATA (5) (100), 1 is assigned to the variable i (110), and DATA is set in the variables MAX and MIN.
Substitute (i) (112).

Then, as the operation of the maximum value judging means 22, it is judged whether the variable MAX is smaller than DATA (i) (120). If the variable MAX is smaller than DATA (i), DATA (i) is changed to the variable MAX. Substitute (12
2) Otherwise, move directly to the next processing.

Next, as the operation of the minimum value judging means 23,
It is determined whether the variable MIN is larger than DATA (i) (13
0), if the variable MIN is larger than DATA (i), DATA (i) is substituted for the variable MIN (132), otherwise, the process directly proceeds to the next step.

Next, 1 is added to the variable i (134), and it is judged whether the variable i is larger than 5 (136).
If is not greater than 5, the process returns to step 120 and the variable i
If is larger than 5, the vertical line creating means 24 operates,
The drawing position of the time axis is shifted by one in the x direction (140), and the graph data of the vertical line connecting the value of the variable MAX and the value of the variable MIN is output to the drawing control means 14 (142), one drawing unit. The processing related to time ends.

FIG. 4 shows a display example of a graph using the schematic graph creating means 20 in the graph drawing method of the FDR analysis apparatus of this embodiment. By repeating the processing for one drawing unit time as described above, as shown in FIG. 4, when there is no change in the flight data within the drawing unit time,
If only one dot corresponding to the value of the flight data is drawn and the flight data within the drawing unit time fluctuates, vertically connect the dots corresponding to the maximum value of the flight data to the dot corresponding to the minimum value. All dots are drawn in the direction (y direction).

In the graph drawing method in the FDR analysis apparatus of the present embodiment, when the drawing of the outline of the present embodiment is performed, the graph data is output to the drawing control means 14 in the processing for each drawing unit time, Although the display device 4 is made to draw a graph, a VRAM is newly provided, and image (drawing) data is stored in the VRAM during the processing for each drawing unit time.
It is more efficient to output the contents of the VRAM to the display device 4 and draw a graph when the processing for the screen is completed.

According to the graph drawing method in the FDR analysis apparatus of the present embodiment, the maximum value and the minimum value of the flight data within each drawing unit time are determined when the outline drawing of the present embodiment is performed, and the maximum value is determined. Since the vertical line connecting the minimum values is drawn, even if the rough drawing is performed, it is possible to draw the fluctuation location and the fluctuation range without thinning out the flight data. It is possible to easily and accurately detect the abnormal or suspected abnormal place by performing detailed drawing only for the detected abnormal place while confirming such transitions.
There is an effect that the flight data collected by can be analyzed.

[0033]

According to the present invention, the flight data for each specific unit time is read from the storage device by using the specific unit time as a drawing unit in the x-axis direction, and the maximum value and the minimum value of the read flight data are obtained, Since the graph drawing method in the FDR analysis device draws a line connecting the maximum value and the minimum value drawing points at the position of the drawing unit, a specific unit time is set as one drawing unit, You can easily grasp the outline of the change, and if there is fluctuation in the flight data within a specific unit time, the fluctuation width is drawn with a line,
It is possible to grasp fluctuations in flight data, and therefore FD
There is an effect that R analysis can be performed easily and accurately.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a graph drawing example of schematic drawing by a graph drawing method in an FDR analysis apparatus according to an embodiment of the present invention.

FIG. 2 is a functional configuration block diagram relating to graph creation and drawing control in the control device of the FDR analysis device according to the present embodiment.

FIG. 3 is a flowchart showing the processing operation in the schematic graph creating means 20 of the FDR analysis device of this embodiment.

FIG. 4 is an explanatory diagram of a graph display example using the schematic graph creating means 20 in the graph drawing method of the FDR analysis apparatus according to the present embodiment.

FIG. 5 is a configuration block diagram of a conventional FDR analysis device.

FIG. 6 is an explanatory diagram showing a graph drawing example by a graph drawing method in a conventional FDR analysis apparatus.

[Explanation of symbols]

1 ... FDR analysis device, 2 ... interface device,
3 ... Data recording device, 4 ... Display device, 5 ... Printer,
6 ... Input device, 7 ... Control device, 11 ... Data input means, 12 ... Data table, 13 ... Drawing method reading means, 14 ... Drawing control means, 15 ... Graph data creating means, 20 ... Schematic graph creating means, 21 ... Data reading means, 22 ... Maximum value determining means, 23 ... Minimum value determining means, 24 ... Vertical line creating means, 30 ... Detailed graph creating means

Claims (1)

[Claims] 1. Reading flight data from a recording device and x
In a graph drawing method in an FDR analysis device that draws the value of the flight data in the y-axis direction with respect to the time in the axial direction, a specific unit time is set as a drawing unit in the x-axis direction, and Load flight data,
The FD is characterized in that the maximum value and the minimum value of the read flight data are obtained, and a line connecting the drawing point of the maximum value and the drawing point of the minimum value is drawn at the position of the corresponding drawing unit.
Graph drawing method in R analysis apparatus.