KR20000075022A - Train simulator - Google Patents

Abstract

PURPOSE: A train simulator using digital images is provided so that a user can perform repeating training for an arbitrary line by displaying training lines photographed at an actual operation speed of a train using an MJPEG(Motion Joint Photographic coding Experts Group) and by carrying out rear projection for the images from the rear side of the screen. CONSTITUTION: A hard disk(31) and an MJPEG(32) are connected to a computer(33). A projector(35) is connected to the output terminal of the MJPEG(32). The projector(35) and a reflector(37) are installed in the real side of a screen(34) so that the images projected from the projector(35) can be reflected by the reflector(37) and projected on the screen(34).

Description

Train Simulator {TRAIN SIMULATOR}

The present invention relates to a train simulator (hereinafter referred to as a simulator) for driving trains (trains, locomotives, etc.) driving practice, in particular, by taking a training section (track) at the actual speed of the train to harden it After saving to the disk (HARD DISK), the image is expressed using MJPEG (MOTION JOINT PHOTOGRAPHIC CODING EXPERTS GROUP), and during the projection of the image, the image is repeatedly projected from the back of the screen to the rear of the screen (repeated training) It is possible to provide a train simulator that can be used, there is no video interruption at low speed, high definition, low cost and easy installation.

In general, as shown in Figs. 1 to 4, the simulator includes: an INSTRUCTION'S STATION 1 composed of a keyboard, a mouse, a control monitor, and the like; An instructor switch control panel (INSTRUCTOR'S SWITCH CONTROL PANEL) 2 consisting of a speedometer, an air brake gauge, an air brake gauge, a control switch, and the like; An INSTRUCTOR'S REPEAT DISPLAYS 3 composed of a front visual device, a side visual device, a cab graphic device, a CCTV, and the like; A communication system 4 including a buzzer, a microphone, a control switch, and the like; A computer system 5; A CONTROL STAND 6; A graphic display unit 7 for indicating train movement, brake pressure, track profile, and the like; A SOUNT SYSTEM 8; A visual system 9 for controlling front and side images; It consists of other accessories such as engine control panel.

Figure 1 shows a block for each module of the simulator, Figure 2 shows the configuration of the cab, Figure 3 shows the configuration of the instructor's room. 4 shows the overall configuration of the simulator.

In this simulator, when the instructor inputs the training section and the training contents through the instructor 1, the trainees are trained accordingly, and the computer system 5 controls the process.

In this case, the sound apparatus 8 and the image system 9 output a real image and sound for a training section to represent a sense of reality, and the training contents and scores are output through a printer or stored in a database (not shown). .

Hereinafter, the imaging system 9 will be described in detail.

Fig. 5 is a block diagram showing the structure of a conventional video system, and as shown in the figure, controlled by the host computer 16 of the computer system, to play a video disc (VIDEO DISK) photographing a training section. Four video disc players (VIDEO DISK PLAYERs) 11 to 14; A video switch 15 operated under the control of the host computer 16 to select and output a signal applied from the video disc players 11 to 14; A projector (17) for projecting a signal input through the video switch (15) onto a screen (20); A control panel (18) for controlling the projector (17); The monitor 19 for instructors is comprised.

In such a conventional imaging system, an image stored in a video disc is reproduced at a predetermined speed under the control of a host computer, and projected onto the screen 20, thereby showing the stop, driving, slow motion, and high speed of the train.

However, in the conventional video system as described above, first, the video is recorded on the video disc at a constant speed, and then stored on the video disc, and then played back through the video disc player. There is a problem that it is difficult to repeat the playback of the random section, and second, because the front projection method consisting of "trainer-> projector-> screen" to reproduce the image, the light on the projection screen of the projector Due to this, there is a problem that the image projected on the screen is not clear and the installation and control of the projector are not easy.

This will be described in detail as follows.

Conventional image capturing methods include a constant speed photographing method for photographing at a constant speed, and a two-speed photographing method for photographing at a low speed (1/2 speed) in a reverse area and in other cases photographing at a constant speed. .

However, in the case of the constant speed photographing method, after photographing the track section (learning section) at a constant speed, and expressing it, it is played fast or slow depending on the speed at which the trainees drive. There is a problem that the image is disconnected in a slow motion such as an entry.

For example, in the case of MARCONI's simulator, the maximum image frame interval is 35 cm per frame and the minimum image frame interval is 35 cm. When driving below 35 cm / Frame, the image is disconnected. There is this.

In addition, since the image display method is an LDP (LASER DISK PLAYER) method in which an image of a training section is stored on a video disk and displayed using a video disk player, it is difficult to repeatedly display an arbitrary section. For reference, in the case of using the tape (VCR) method, it is almost impossible to repeatedly display an arbitrary section.

In addition, in the case of the two-speed shooting method, it is possible to obtain a higher quality image quality than the constant speed shooting method, but this also has a problem that it is difficult to repeatedly display an arbitrary section as well as the image is interrupted during a slow driving.

On the other hand, in the case of the front projection method in which the projector is installed on the trainee's side to project an image, the illumination of the image projected by the projector brightens the illuminance of the space between the trainee and the screen, and thus the image is not clear. The projector must be installed in a location that minimizes the influence of the light projected from the projector without having a visual field of view.Therefore, there is a problem that the installation is not easy due to a lot of restrictions on space, distance, and angle. .

An object of the present invention is to solve the above-mentioned conventional problems, in particular, when shooting the image of the training section of the train running at the actual speed of the train and store it on the hard disk, when the image is expressed using MJPEG In addition, when projecting an image, the reflector is used to project from the back of the screen to the rear, so that it can be repeatedly displayed for any section, there is no image interruption at low speed playback, high definition, low cost, and installation To provide an easy "train simulator".

In other words, by recording at the actual speed of the train when shooting the image, and storing and reading it by using the hard disk, it is possible to prevent the disconnection of the image generated during the slow driving of the train (at low speed playback), and to repeatedly display the random section. In order to facilitate this, and to project the image on the screen, the image is projected from the rear side of the screen to darken the space between the trainee and the screen (dark room configuration) to make the image clear as well as easy to install.

1 is a block diagram showing a modular configuration of a conventional train simulator,

2 is a view schematically showing a cab configuration of a conventional train simulator;

3 is a perspective view showing the configuration of the instructor room of the conventional train simulator,

4 is a perspective view showing the whole of the conventional train simulator,

5 is a block diagram showing the structure of a conventional video system;

6 is a block diagram showing a configuration of an image system according to the present invention;

7 is a side view of a cab and an imaging system according to the present invention;

8 is a view showing a video data storage relationship according to the present invention.

<Description of Symbols for Major Parts of Drawings>

31: Hard Disk 32: MJPEG

33: computer 34: screen

35: Projector 37: Reflector

In order to achieve the above object, the present invention "train simulator" includes an instructor, an instructor switch control panel, an instructor imaging apparatus, a communication system, a computer system, a steering wheel, a graphic display apparatus, and an acoustic apparatus. In a train simulator consisting of a video system and the like.

The imaging system includes a hard disk for storing an image captured at an actual driving speed of a train according to a MJPEG format; MJPEG for reading and outputting image data stored in the hard disk; A computer for controlling the operation of the hard disk and the MJPEG to output an image stored in the hard disk; Screen; The technical configuration is characterized by including a projector for projecting the image signal output from the MJPEG on the screen.

In addition, when projecting the image stored in the hard disk on the screen by using a projector, the projector is installed on the back of the screen, characterized in that for projecting the image from the back of the screen.

For example, when storing a photographed image on a hard disk, the rear projection image may be obtained by storing the image by changing left and right and then directly projecting the swapped image on the screen from the back of the screen.

In addition, in the above, when the projector is installed on the rear of the screen, when projecting the image from the rear of the screen, it is characterized in that the projection of the image projected by the projector on the screen using a reflector.

That is, the image space projected by the projector is reversed (inverted) by using a reflector and then projected onto the screen, thereby reducing the installation space on the projector and the screen.

For example, if one reflector is used, the distance can be reduced to half, and if three reflectors are used, the distance can be reduced to 1/4.

Hereinafter, with reference to the accompanying drawings, for example according to the technical idea of the present invention "train simulator" configured as described above in detail.

<Example>

In the present embodiment, an image is displayed by using one reflector.

First, as shown in FIGS. 6 and 7, the hard disk 31 and the MJPEG 32 are connected to the computer 33, and the projector 35 is connected to the output terminal of the MJPEG 32. The projector 35 and the reflector 37 are installed on the rear surface of the 34 so that the image projected by the projector 35 is reflected by the reflector 37 and projected onto the screen.

Here, the MJPEG 32 is a known image processing apparatus that performs image processing by an internationally recognized still image compression method, and has both advantages of MPEG and JPEG. In other words, MPEG can be used to express motion, but resolution is degraded. In the case of JPEG, high resolution image quality can be obtained, but motion can not be expressed. It is a device to get moving images. Compared to JPEG or MPEG

The final output image is a standard JPEG format.

-No deterioration of image quality at high resolution.

-Real time high resolution video playback is possible.

Nonlinear control is possible.

-It is easy to control STARTING POINT through frame control.

Has the advantage.

On the other hand, the computer 33 refers to a host computer as one of the computers constituting the computer system.

In the figure, reference numeral 36 denotes a projector control panel, and 38 denotes an instructor monitor on which an image projected on a screen is output.

Subsequently, when the image of the training section is taken, the image taken at the actual driving speed of the train is digitized, and then compressed by the compression format of the MJPEG 32 and stored in the hard disk.

Then, by displaying the stored image based on the actual speed when displaying the image, it is possible to remove the disconnection phenomenon of the image generated during the low speed playback.

In addition, due to the image processing by the MJPEG 32, high-quality, nonlinear repetitive playback of arbitrary sections is possible.

On the other hand, when the image is displayed, it is possible to clearly display the image by zooming the image by rear projection using the reflector 37, as well as to save the installation space by shortening the projection distance.

This will be described in detail as follows.

First, when the image is taken at the actual speed of the train, a small number of images are obtained for the same distance in a high speed section, and a large number of images are obtained in a low speed section.

Then, the image photographed at the actual speed of the train is divided into frames according to the format of the MJPEG 32 and stored in the hard disk 31 in the form of a library.

8 shows a storage state of a hard disk for an image of a certain track section. In the drawing, each frame is stored between the addresses ADDRESS " 1500 " to " 15FF ".

Thereafter, when the image display speed is changed from low speed to high speed or from high speed to low speed by starting the training, each image frame stored according to the actual speed is read by the MJPEG 32 and projected on the screen. The image data captured at the actual speed eliminates the disconnection of the image. In other words, after the DECODING and editing of the video stored in the library form according to the designated speed in real time, the frame control according to the speed / distance is performed, which results in high quality and high resolution video from low speed to high speed. You will get

This will be described as follows.

As is well known, the purpose of the training is to learn a train driving technique for a section, and the driving technique is also carried out at the actual train operating speed. Therefore, the range of varying the speed of the train during training will match the actual speed of travel.

However, since the simulator according to the present invention stores the photographing data according to the actual speed of the train, more video frames are displayed for the same distance than at high speeds at low speeds, so that smooth image reproduction is possible without disconnection of images. It becomes possible.

In practice, when the track section is photographed according to the speed of the train, the maximum image frame interval is 33.3cm per frame and the minimum image frame interval is 3.33cm, which is 10 times more compact than the conventional 35cm. Has a value.

In addition, if there is an arbitrary section that you want to repeat during training (when the image is displayed), if you select an address for this, the image stored at the address will be read out and projected. Learning).

For example, if an address between "1510" and "15A1" is specified in FIG. 8, the video frame (video data) stored in the address section is repeatedly played.

In practice, instead of specifying an address, if a section to be repeated is selected on the screen, an address for the screen is automatically designated to perform a repeat playback operation.

Therefore, even at low speed playback, there is no disconnection of the video, and repeated playback of an arbitrary section is possible.

At this time, since the data access medium is a hard disk, the data access time is shortened and the initial image display time is shortened.

In addition, by projecting the image back by using a reflector, a dark room is formed between the trainer and the screen (that is, the lighting effect due to the light generated when the projector projects the image is blocked), thereby obtaining a clear image.

However, in the above embodiment, the rear projection method is configured using the reflector, but it is clear that the rear projection can be performed without the reflector, and the rear projection can be performed using a plurality of reflectors.

As described above, the "train simulator" of the present invention, in particular, when the image is taken at the actual speed and the image is stored and read out through the MJPEG using a hard disk, the image of the slow driving of the train (at low speed playback) There is an effect of preventing the disconnection phenomenon, it is easy to repeatedly display for any section, and when projecting the image on the screen by projecting the image from the back of the screen, by darkening the space between the trainee and the screen ( Dark room configuration) The image is not only clear but also easy to install.

Claims (4)

In a train simulator comprising an instructor, an instructor switch control panel, an instructor imaging apparatus, a communication system, a computer system, a steering wheel, a graphic display apparatus, an acoustic apparatus, an imaging system, etc. The imaging system includes a hard disk for storing an image captured at an actual driving speed of a train according to a MJPEG format; MJPEG for reading and outputting image data stored in the hard disk; A computer for controlling the operation of the hard disk and the MJPEG to output an image stored in the hard disk; Screen; And a projector for projecting the image signal output from the MJPEG onto a screen. The train simulator according to claim 1, wherein when projecting an image stored in the hard disk onto a screen by using a projector, a projector is installed on the rear of the screen to project the image on the rear of the screen. The train simulator according to claim 2, wherein when the projector is installed on the rear of the screen and the image is projected from the rear of the screen, the projected image is projected on the screen by using a reflector. In the image capturing method of a train simulator comprising an instructor, an instructor switch control panel, an instructor imaging apparatus, a communication system, a computer system, a steering wheel, a graphic display apparatus, an acoustic apparatus, an imaging system, etc. The imaging method of the imaging system, train simulator, characterized in that for taking an image at the actual running speed of the train.