JPH1124546A - Simulated image display method - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a simulated image display method for generating and displaying a simulated image corresponding to an arbitrary state change based on single moving image data without using a special image synthesis technique. SOLUTION: A moving image obtained by photographing at least one kind of monotonous state change of a simulated image display target can be reproduced as a moving image at a predetermined reproduction speed from an arbitrary reproduction time and a still image can be reproduced at an arbitrary reproduction time. In addition, moving image data in which a state of a reproduced image is stored in association with the reproduction time is designated as a reproduction time corresponding to a state in which the simulated image display target is to be displayed. Start (S
1 to S3), an error between the state of the reproduced image and the state to be displayed is obtained at all times or at a fixed time interval (S5). Then, at least one of the change of the reproduction mode and the change of the reproduction time is performed (S6).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simulated image display method using moving image data capable of reproducing a moving image at a predetermined reproduction speed from an arbitrary reproduction time and a still image at an arbitrary reproduction time. More specifically, the present invention relates to a method of displaying a simulated monitor monitor image in a simulation system for training a driver of a plant facility such as a garbage incineration plant.

[0002]

2. Description of the Related Art As shown in FIG. 3, a plant facility such as a garbage incineration plant has an actual plant operation control system 21 for controlling the operation of an actual plant 20, and the actual plant operation control system 21 controls the process of the actual plant 20. And a simulation system 31 having the same configuration as the actual plant operation control system 21 including the process controller 30 for simulating a predetermined process to be controlled by the same controller 32 as the real controller 22 used for System bus 2
In some plants, a simulation system for operator training is provided in the plant facility by connecting the devices 3 and 33 by the gateway 24 and juxtaposing them.

In this type of plant facility, an actual plant 2
The driver does not always monitor various process values displayed on the display panel attached to the real controller 22 of 0, and an abnormality is detected by an alarm issued by the real controller 22 and a monitor monitor screen 25. Considering the current situation, it is necessary for the simulation system 31 to display a simulated image corresponding to the monitoring monitor image in the actual plant 20 on the simulated image display device 35 based on the simulation result of the process simulator 30. is there.

Conventionally, as a method of displaying a simulated image of the monitoring monitor image, a process value output by the process simulator 30 is selected from among still image data or still image data to be displayed, which is stored in a database in advance. Is selected directly, and the selection of the still image is performed on the simulated image display device 35 while updating the display image data at regular time intervals or in accordance with a constant change in process value. Was displayed.

[0005]

However, if one attempts to respond to various changes in the state of the display object in a fine manner,
If the amount of display image data to be stored in a database in advance becomes enormous, and if the update interval of the display image data is lengthened, the image display will move unnaturally. Furthermore, although it depends on the hardware configuration of the display device that displays the simulation image,
Discontinuous movement of the display image when the display image data is updated or flickering of the screen becomes frequent, which may cause a problem of giving a sense of incongruity to the driving trainee. The present invention has been made in view of the above circumstances, and an object of the present invention is to solve the above-mentioned problems and to provide a sense of incongruity to a driving trainer with a small storage capacity of a simulated image of a monitoring monitor image. Another object of the present invention is to provide a simulated image display method capable of displaying a natural moving image without any problem.

[0006]

A first characteristic configuration of a simulated image display method according to the present invention for achieving this object is as follows.
As described in claim 1 of the claims, the moving image data is obtained by capturing a monotonous state change of a simulated image display target, and includes moving image reproduction at a predetermined reproduction speed from an arbitrary reproduction time and arbitrary video reproduction. The reproduction time corresponding to the state in which the still image can be reproduced at the reproduction time and the moving image data in which the state of the reproduction image is stored in association with the reproduction time is displayed on the simulation image display target. To start the video playback or still image playback, determine the error between the state of the playback image and the state to be displayed at all times or at regular time intervals,
If the error is equal to or more than a predetermined value, at least one of the change of the reproduction mode and the change of the reproduction time is performed according to the magnitude and polarity of the error. Here, the monotonous state change of the simulation image display target is, for example, when the drum water level of the boiler of the garbage incineration plant is monotonically rising or falling without going up and down, or the opening and closing state of the hopper door of the incinerator. , Monotonously changes from the closed state to the open state or from the open state to the closed state. The target of the simulation image display includes a change in position, a change in dimension such as length and size, a change in lightness and color, or a combination thereof, which can be visually recognized by a human to recognize a change in state. It should be noted that the still image reproduction is to pause the moving image reproduction and reproduce as a still image, and does not mean that special still image data different from the moving image data is separately reproduced.

According to the second feature configuration, as described in claim 2 of the claims, in addition to the above-mentioned first feature configuration, a change in the state of the moving image data during reproduction of a moving image is constant. Is the rate of change of

[0008] In the third feature configuration, as described in claim 3 of the claims, in addition to the above-mentioned second feature configuration, the moving image data is obtained by simulating the simulation image display target. The change in the state of the maximum change rate is taken in such a manner that the maximum change rate is obtained during the reproduction at the highest reproduction speed. When the moving image is played at a single playback speed, the playback speed corresponds to the highest playback speed.

The fourth characteristic configuration is, as described in claim 4 of the claims section, in addition to the first, second and third characteristic configurations described above, wherein the moving image reproduction is performed by standard reproduction. In the case of having a slow playback mode that can be played back at a playback speed lower than the playback speed, the change of the playback mode is a normal playback mode at a standard playback speed, a slow playback mode, and a switching between still image playback modes. is there.

The fifth characteristic configuration is, as described in claim 5 of the claims, in addition to the first, second, and third characteristic configurations described above, wherein the moving image reproduction is performed by standard reproduction. In the case of having a slow playback mode that can be played back at a playback speed lower than the speed and a high-speed playback mode that can be played back at a playback speed higher than the standard playback speed, the change of the playback mode includes a normal playback mode at a standard playback speed, The point is that the mode is switched among a high-speed reproduction mode, a slow reproduction mode, and a still image reproduction mode.

[0011] The sixth feature of the present invention, in addition to the fourth or fifth feature of the present invention, further includes at least one of the moving image playback modes. When a plurality of playback speeds can be selected in the playback mode, the change in the playback mode includes a change in the playback speed.

[0012] The seventh characteristic configuration is, as described in claim 7 of the claims section, the above-mentioned first, second, third, and third features.
In addition to the fourth, fifth, or sixth characteristic configuration, the moving image data includes not only a monotonous state change of the simulated image display target, but also moving image data of the opposite state change. .

[0013] The eighth characteristic configuration is the same as the first, second, third, and second aspects described in claim 8 of the claims.
In addition to the fourth, fifth or sixth characteristic configuration, the moving image reproduction includes a reverse reproduction mode in which reproduction is performed in a temporally reverse direction.

The operation will be described below. According to the first characteristic configuration, for example, an MPEG (Moving Picture E) generally used as a moving image data compression technique is used.
The moving image data subjected to the data compression processing by the xpert Group moving image compression processing has a data structure capable of reproducing a moving image at a predetermined reproduction speed from an arbitrary reproduction time and a still image reproduction at an arbitrary reproduction time. Therefore, by performing the image compression process on the moving image data obtained by capturing the monotonous state change of the simulated image display target, the moving image data can be reproduced at any playback time as moving image data or still image reproduction. Since the state change of the simulated image display target of the moving image data is monotonous, the state of the reproduced image and the reproduction time can be stored in one-to-one correspondence, and the reproduction time can be designated. By doing so, the state at the start of reproduction can be arbitrarily specified. As described above, since the moving image reproduction or the still image reproduction of the moving image data can be started by designating an arbitrary state, an error between the state of the reproduced image and the state to be displayed at all times or at regular time intervals is obtained. If the error is equal to or more than a predetermined value, by continuing the reproduction of a moving image or a still image while re-designating the reproduction time, any reproduction of the simulated image can be performed despite reproduction of a single moving image data. State changes can be freely reproduced. Accordingly, it is not necessary to individually prepare a large number of image data for every type of state change, and it is possible to greatly reduce the storage capacity required for storing moving image data. Further, according to the present characteristic configuration, although there is a possibility that a discontinuous portion of the state change of the reproduced image exists, the degree of the discontinuity of the state change is significantly larger than the conventional method of sequentially reproducing the still images. In addition to the relaxation, the frequency of occurrence of the discontinuous portion within a predetermined reproduction time can be suppressed, and as a result, the moving image can be reproduced so that the state change can be seen more naturally and continuously.

According to the second characteristic configuration, the reproduction time of the moving image data can be determined from the process value indicating the state of the image to be reproduced by a simple conversion process using a relational expression, and the designation can be easily performed. Also, to grasp the error between the state where the image is actually reproduced and the state that should be displayed,
Since the state where the image is actually reproduced can be confirmed by the same relational expression at the reproduction time at that time, control such as redesignation of the reproduction time becomes easy.

According to the third characteristic configuration, the arbitrary state change of the simulated image display target always includes a maximum change rate when the moving image data is reproduced as a moving image and a minimum change rate when the moving image data is reproduced as a still image. Since the average rate of change can be adjusted arbitrarily by repeating video playback and still image playback, the error in the displayed state change can be suppressed while suppressing the error from the originally displayed state. The discontinuous portion can be eliminated, and a more natural moving image can be displayed. Further, the fact that the discontinuous portion can be eliminated means that it is not necessary to change the reproduction time and change the reproduction time when the reproduction mode is changed.

More specifically, if an error from a state to be originally displayed is equal to or more than a predetermined value during reproduction of a moving image, the displayed state is temporally advanced from the state to be displayed. By switching to the image playback, the progress can be gradually corrected, and if the still image playback is continued as it is, the error from the state to be displayed again becomes a predetermined value or more, and this time, the error from the state to be displayed originally becomes Since the time is delayed, the delay can be gradually corrected by switching to the reproduction of the moving image. When switching between moving image reproduction and still image reproduction, the reproduction time need only be re-designated as it is at the time of the switching, so there is no need to calculate the reproduction time to be re-specified again.
In particular, when the error between the state of the reproduced image and the state to be displayed is always determined, as soon as the error becomes equal to or larger than a predetermined value,
Since the above correction is started, the effect of suppressing errors is higher than when errors are obtained at regular time intervals. However,
It is necessary to constantly monitor the error, and when the error is obtained at regular time intervals, the burden is reduced.

According to the fourth, fifth or sixth characteristic configuration, since the reproduction speed of the moving image reproduction can be selected from a plurality of speeds, the adjustment to an arbitrary change rate can be performed by adjusting the reproduction speed of the moving image reproduction in one way. This can be performed with higher accuracy than in the case. In addition, the fifth characteristic configuration has a greater number of reproduction speed selections in the sixth characteristic configuration than the fifth characteristic configuration than the fifth characteristic configuration, and higher accuracy can be achieved.

According to the seventh characteristic configuration, since the state change of the simulated image display target is usually a reversible change, even in such a case, the state of the moving image data is opposite to that of the single monotonous state change. By combining the reproduction of the moving image data of the change, it is possible to adapt to the reproduction of an arbitrary state change. That is, the reproduction time corresponding to the state in which reproduction is desired to be started is specified by distinguishing the direction of the state change, and when the direction of the state change changes in the middle, when the two moving image data are separately present, When the moving image data to be reproduced is changed and the two moving image data are integrated as one continuous moving image data, by changing the reproduction time, the same as the first to sixth characteristic configurations is obtained. This enables high-quality moving image reproduction.

According to the eighth feature configuration, unlike the seventh feature configuration, in addition to the monotonous state change of the simulated image display target, the moving image data of the opposite state change is not prepared and reproduced. By adding the reverse reproduction mode to the options at the time of mode change, it is possible to reproduce a moving image with the same quality as the first to sixth characteristic configurations.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a simulated image display apparatus 1 for implementing a simulated image display method according to the present invention (hereinafter, referred to as the method of the present invention) captures a monotonous state change of a simulated image display target. A moving image storage device 3 for storing moving image data 2 that has been subjected to MPEG moving image data compression processing (hereinafter, referred to as encoding processing) on a moving image, and reading out the moving image data 2 from the moving image storage device 3; M for transferring to the internal image memory 4 for display and reproduction on the image display device 5
For the PEG playback device 6 and the MPEG playback device 6, a playback time is specified according to a predetermined display target state,
A moving image reproduction control device 7 for instructing start or stop of reproduction and switching of the reproduction mode. still,
The simulator 8 outputs a process value 9 indicating one of the simulation results indicating the state of the predetermined display target, and the process value 9 is input to the moving image reproduction control device 7. The MPEG playback device 6 and the video playback control device 7 are each a general-purpose computer on which MPEG playback software and video playback control software are installed so as to be executable. The moving image reproduction control software specifically executes the method of the present invention.

The moving image data 2 conforming to the MPEG format is a GOP (groupof picture).
e), the GOP includes at least one I-picture (Intra-coded picture) and is a minimum unit that can be randomly accessed and has a time code that is playback time information. Reproduction from an arbitrary reproduction time is possible. Also, since the size of the GOP can be set during the encoding process, the interval between entry points corresponding to the reproduction time can be set arbitrarily.

The MPEG playback device 6 can perform playback at a standard playback speed and playback at an arbitrary playback speed from an arbitrary playback time, and a pause function and a reverse playback function as a special form of an arbitrary playback speed. Having. Specifically, “Pla
Each command of “y”, “Set”, “Pause”, and “Stop” is received. “Play” is a playback start command from the playback time “0” at the standard playback speed, and can optionally specify a playback time and a playback speed. In the specification of the reproduction speed, the reproduction in the forward direction and the reproduction in the reverse direction can be specified by specifying the polarity. Another option is reverse playback at standard playback speed. In the case of slow playback in which the playback speed is slower than the standard playback speed, the playback interval of each picture is lengthened at a fixed magnification. Conversely, in the case of fast playback in which the playback speed is faster than the standard playback speed, the picture is thinned out.
For example, only the I picture is reproduced. “Set” is a command for changing the playback speed, and the playback speed can be changed at an arbitrary time. “Pause” is a pause command, which repeatedly reproduces the same picture and functions as still image reproduction. From the moving image reproduction control device 7 to the MP
A “Pause” command is transmitted to the EG regeneration device 6. “Stop” is a stop command, which stops reproduction and display on the image display device.

The display of a simulated image of the drum water level of a boiler in a garbage incineration plant will be described below. First, as preparation of the moving image data 2, a 1000-second drum water level rising image in which the drum water level rises at a rate of 1 mm / sec from -500 mm to +500 mm is taken and stored in the moving image storage device 3 after the encoding process. In the case of the moving image data 2, the reproduction time (second) is a value obtained by converting the drum water level (mm) to be displayed to seconds and adding 500 seconds.

As shown in FIG. 2, in step S1, the moving image reproduction control device 7 controls the drum water level to be displayed based on the process value 9 input from the simulator 8 based on an external image reproduction command 10. Judge,
The reproduction time is calculated from the drum water level. Step S2
In, the reproduction time obtained in step S1 is designated,
In order to start normal playback at the standard playback speed, the “Play” command is transmitted from the moving image playback control device 7 to the MPEG playback device 6 together with the playback speed. In step S3, the moving image data 2 is transferred from the moving image storage device 3 to the image memory 4 of the MPEG reproducing device 6, and normal reproduction is started at a standard reproduction speed. Step S4
In, the started moving image reproduction is continued. Step S4
In the continuing step S5, every time one picture is reproduced,
The drum level currently being reproduced is calculated from the reproduction start time, the reproduction speed, and the direction of the reproduction state, and the difference between the drum level corresponding to the process value 9 currently input from the simulator 8 is calculated as a display error. In step S6, when the absolute value of the difference is equal to or more than the predetermined value, whether the drum water level is rising from the process value 9 input immediately before,
Judgment is made between a descending state and a stationary state, an optimal reproduction mode is selected, and when reproduction of a moving image is selected, an optimal reproduction speed is selected. When moving from the moving image reproduction state to the still image reproduction, a “Pause” command is transmitted from the moving image reproduction control device 7 to the MPEG reproducing device 6, and when moving from the still image reproduction state to the moving image reproduction, the reproduction is performed. When the “Play” command is transmitted with the specified speed and the playback speed is changed in the video playback state, the playback speed is specified and “Se
t ”command. In step S7, it is determined whether the playback time has reached 1000 seconds in the normal playback mode, or whether the playback time has reached 0 seconds in the reverse playback mode. Sends a “Pause” command to the MPEG playback device 6. In step S8, an external reproduction stop command 11 is received, and the moving image reproduction control device 7
The “Stop” command is transmitted to the PEG playback device 6, and the simulation image display is terminated.

Hereinafter, another embodiment will be described. <1> In step S5, in addition to the display error calculation, the actual speed of fluctuation of the drum water level is calculated from the process value 9 input from the simulator 8, and the image calculated from the playback speed currently being played back. A difference between the displayed drum water level fluctuation speed and the displayed drum water level fluctuation speed is calculated. If the absolute value of the difference is equal to or greater than a predetermined value in step S6, the reproduction speed corresponding to the actual drum water level fluctuation speed calculated in step S5 is calculated. It is also a preferred embodiment to add an operation of changing to. At this time, a reproduction speed is designated from the moving image reproduction control device 7 to the MPEG reproduction device 6 and "S
"Et" command.

<2> In each of the above embodiments, the M
If the PEG playback device 6 is not provided with the reverse playback function, the drum water level becomes-
Ascend from 500mm to + 500mm at 1mm / sec,
Subsequently, an image of the rise and fall of the drum water level is taken for 2000 seconds, which descends at a rate of 1 mm / sec from +500 mm to -500 mm, and is stored in the moving image storage device 3 after the encoding process. In step S6, instead of selecting the reverse reproduction mode, the reproduction time may be set to +1000 seconds and the sign of the reproduction speed may be reversed. The step S
7 in place of the determination of whether the playback time has reached 0 seconds in the reverse playback mode,
It is determined whether the time has reached 0 seconds.

<3> In each of the above embodiments, the fluctuation speed of the drum water level of 1 mm / sec of the moving image data 2 is:
In order to match the fluctuation speed of the display drum water level at the time of reproduction at the standard reproduction speed, the maximum value of the fluctuation speed at the time of high-speed reproduction is determined by the maximum value of the reproduction speed at the time of high-speed reproduction. In this case, the drum value of the moving image data 2 is set so that the maximum predictable value of the fluctuation speed of the actual drum water level is equal to or less than the fluctuation speed of the display drum water level controlled by the maximum value of the reproduction speed during high-speed reproduction. It is preferable to set the fluctuation speed of the water level. When the fluctuation speed of the actual drum water level exceeds the display drum water level controlled by the maximum value of the reproduction speed during high-speed reproduction, the drum water level is changed discontinuously, that is, the reproduction time is reset. It is possible to deal with it. However,
It is inevitable that the moment when the drum water level changes discontinuously on the screen display.

<4> In each of the above embodiments, M
If the PEG playback device 6 does not have a function of arbitrarily setting the playback speed of each video playback mode or a function of selecting any one of a plurality of predetermined playback speeds, When the reproduction speed is fixed, the selection of the optimum reproduction speed when the moving image reproduction is selected in step S6 is not performed.

<5> In each of the above embodiments,
If the MPEG playback device 6 does not have the high-speed playback function, the slow playback function, or both functions, the playback mode that is not provided is not selected when the optimum playback mode is selected in step S6.

<6> In each of the above embodiments, moving image reproduction at a predetermined reproduction speed from an arbitrary reproduction time and still image reproduction at an arbitrary reproduction time are possible, and the state of the reproduced image and the reproduction As the moving image data stored in association with the time, data conforming to the MPEG format was used, and the MPEG reproducing device 6 which is a reproducing device conforming to the data format was used. It is not always necessary to conform to the MPEG format, and other formats may be used. In such a case, a playback device that conforms to the format may be used.

<7> In each of the embodiments described above, the simulation image display of the drum water level of the boiler of the refuse incineration plant has been described. However, the method of the present invention may be applied to other simulation image displays. For example, it is also preferable to apply the present invention to a simulation image display of the open / closed state of a hopper door of a garbage incineration plant. In this case, since the state of dust in the hopper is constant when the hopper door is opened and closed, it is sufficient to prepare moving image data that captures several types of opening and closing states of the hopper door according to the state of dust.

[0034]

As described above, according to the present invention,
A simulation image corresponding to an arbitrary state change can be generated and displayed based on a single piece of moving image data without using a special image synthesis technique. Furthermore, in the simulation image display of the monitoring monitor image in the simulation system for operator training of a plant facility such as a garbage incineration plant, the simulation image of the monitoring monitor image has a small storage capacity and gives a sense of incongruity to the operation training person. A simulated image display method that can be displayed as a natural moving image without any problem can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram of a simulated image display device according to the present invention.

FIG. 2 is a flowchart showing one embodiment of a simulated image display method according to the present invention.

FIG. 3 is a block diagram showing an example of hardware of a waste incineration plant and a simulation system for plant operation training.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 model image display device 2 moving image data 3 moving image storage device 4 image memory 5 image display device 6 MPEG playback device 7 moving image playback control device 8 simulator 9 process value 10 image playback command 11 playback stop command

Claims (8)

[Claims] 1. A moving image obtained by capturing at least one kind of monotonous state change of a simulated image display target is reproduced as a moving image at a predetermined reproduction speed from an arbitrary reproduction time and a still image is reproduced at an arbitrary reproduction time. Moving image data that is possible and that stores moving image data in which a state of a reproduced image is associated with the reproduction time by specifying a reproduction time corresponding to a state of the simulated image display target that is desired to be displayed is a moving image reproduction or a still image The reproduction is started, and an error between the state of the reproduced image and the state to be displayed is obtained at all times or at regular time intervals. If the error is equal to or more than a predetermined value, the reproduction is performed according to the magnitude and polarity of the error. A simulated image display method for changing at least one of a mode and a reproduction time. 2. The simulation image display method according to claim 1, wherein the monotonous state change of the moving image data at the time of reproducing the moving image has a constant change rate. 3. The one monotonous state change of the moving image data changes the state change of the assumed maximum change rate of the simulated image display target to the maximum change rate at the time of reproduction at the highest reproduction speed. 3. The simulation image display method according to claim 2, wherein the simulation image is photographed as described above. 4. When the moving image reproduction has a slow reproduction mode capable of reproducing at a reproduction speed lower than a standard reproduction speed, the reproduction mode is changed in a normal reproduction mode at a standard reproduction speed, a slow reproduction mode, 4. The simulated image display method according to claim 1, wherein switching between image reproduction modes is performed. 5. The method according to claim 1, wherein the moving image reproduction includes a slow reproduction mode capable of reproducing at a reproduction speed lower than a standard reproduction speed and a high speed reproduction mode capable of reproducing at a reproduction speed higher than the standard reproduction speed. 4. The simulated image display method according to claim 1, wherein the change is switching between a normal reproduction mode, a high-speed reproduction mode, a slow reproduction mode, and a still image reproduction mode at a standard reproduction speed. 6. The simulated image according to claim 4, wherein, when a plurality of playback speeds are selectable in at least one of the moving image playback modes, the change in the playback mode includes a change in the playback speed. Display method. 7. The moving image data includes, in addition to a monotonic state change of a simulation image display target, moving image data of the opposite state change.
Simulated image display method described. 8. The simulated image display method according to claim 1, wherein the moving image reproduction includes a reverse reproduction mode for reproducing in a temporally reverse direction.