JPH03295759A - Monitoring device - Google Patents

Abstract

PURPOSE:To improve the monitoring property and improve safety in various monitoring services by providing a means displaying a monitoring image and the relevant information to the image concurrently on the same screen. CONSTITUTION:This monitoring device is provided to transmit the state near a connection section as image information to a connecting vehicle 1a during the division or connection of the vehicle organization and to support the judgment during a driving operation, and a video camera 3 photographing the preset range including the coupler 2b of a connected vehicle 1b stopping at a fixed position on the ground and a light transmitter 4 converting the video signal from the video camera 3 into a light signal and transmitting it to the receiver 6 reproducing image information from the light signal and outputting it, and distance measuring device 10 detecting the distance between the vehicles 1a, 1b, a picture synthesizing device 8 generating a picture synthesized with the display signal generated by a data processor 7 and the image information, and a display monitor viewer 9 are provided on the vehicle 1a side.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a monitoring device used on a moving object, and in particular, in a moving object such as a railway train, a video signal transmitted from the ground is installed on the moving object. The present invention relates to a monitoring device suitable for displaying information on a display device and using it for safety monitoring and the like.

[Prior Art] Conventionally, as this type of monitoring device in the railway field, for example, a train-to-train image transmission device has been put to practical use and known.

This device uses a television camera to photograph the situation on the station platform.
The video signal is transmitted to the train using optical space transmission, and the video is displayed on the monitor installed in the driver's cab, which shows the status of the platform when entering the station and departure, and the boarding and alighting status of passengers at a stop. etc. can be monitored from the driver's seat,
This is effective for improving safety during one-man operation, long train operation, etc.

Examples of prior art related to this type of monitoring device include [
“Train Image Transmission System” (22nd Domestic Symposium on Cybernetics Utilization in Railways Proceedings No. 29)
1 to 295) are known.

[Problems to be Solved by the Invention] In the prior art, the information provided to the monitoring device for safety monitoring is only the displayed video, and the relationship with other information other than the video information is not considered. Related information other than video information required for the supervisor's judgment is not provided at all, or other display or notification means must be used.

An object of the present invention is to solve the problems of the prior art, and to provide a monitoring device capable of displaying related information other than video information required for monitoring in synchronization with the video display screen, thereby improving visibility and safety. Furthermore, the video to be monitored and the content and characteristics of information related to the video can be changed and controlled by commands from the mobile object, and the operator can select the information desired. The goal is to provide a monitoring device that can

[Means for Solving the Problems] According to the present invention, the above object is to provide a means for simultaneously displaying a surveillance video and related information for the video on the same screen, and to display video information and information related to the video simultaneously. This is achieved by providing an information transmission device from the mobile body to the ground for selecting or controlling the relevant information from the mobile body.

A well-known optical space transmission device is used as a means for providing video information for monitoring to a mobile object, and a means for transmitting related information corresponding to the video is a method independent of the video information transmission means. A method using a transmission device using a transmission system,
Alternatively, it is possible to use a transmission means for video information and transmit the video information with its related information superimposed.

Further, related information may be obtained independently within the mobile body, and such related information can also be used.

Further, a known superimposing device is used as a means for displaying video information and information related thereto on the same screen.

[Operation] Images of the monitored object are captured by a video camera, converted into electrical signals, and then converted into optical signals by a light transmitter and transmitted to a moving object. At this time, data related to the video is superimposed on the video signal at the electrical signal stage. On the mobile body side, this optical signal is received by a photoreceiver, demodulated into an electrical signal, and the demodulated signal is separated into video information and data and provided to a display device.

The display device decodes the information obtained from the data signal, generates a display signal such as characters, and uses a superimpose circuit to
Display is performed by combining a video signal and a display signal such as characters.

According to the present invention, as described above, a surveillance video and information related to the video can be simultaneously displayed on the same screen based on the optical signal given from the ground.

Display information such as characters may be generated in advance on the ground, combined with video, and transmitted as a video signal. In addition, information related to video is not transmitted from the ground;
Those obtained on a mobile body can also be used.

In addition, the crew on the moving object can
Information such as screen selection and angle of view selection can be transmitted to the ground as a data signal, and on the ground, based on this signal,
Camera switching, zoom magnification control, etc. are performed.

[Example] Hereinafter, an example of the monitoring device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a first embodiment of the present invention, and FIG. 2 is a diagram showing an example of a display screen. Figure 1,
In FIG. 2, 1a and 1b are vehicles, 2a and 2b are connectors for each vehicle, 3 is a video camera, 4 is a light transmitter, 5 is a data generator, 6 is a light receiver, 7 is a data processing device, and 8 9 is a monitor pure, and 10 is a distance measuring device.

The first embodiment of the present invention shown in FIG. 1 is a system for transmitting the situation near the connecting part as video information to the merging vehicle 1a to support decision making during driving operations when dividing or merging vehicle formations. It is something.

In Fig. 1, there is a video camera 3 on the ground that takes pictures of a predetermined range including the coupler 2b of the merged vehicle 1b that is stopped at a fixed position, and a video camera 3 that captures images of a predetermined range including the coupler 2b of the merged vehicle 1b that is stopped at a fixed position, and a video camera 3 that captures images of a predetermined area including the coupler 2b of the merged vehicle 1b that is stopped at a fixed position. On the other hand, a light transmitter 4 that converts the video signal from the video camera 3 into an optical signal and transmits the same, and a data generator 5 that transmits serial data as data for superimposing information generated on the ground onto the video signal are provided. ing.

On the other hand, on the vehicle la side, there is a light receiver 6 that reproduces and outputs video information and serial data from the optical signal, a distance measuring device 10 that detects the distance between the vehicles 1a and lb and outputs it as data, and a distance measuring device 10 that detects the distance between the vehicles 1a and lb and outputs it as data. A data processing device 7 generates a display signal for displaying as an image, synthesizes the display signal generated from the data and video information, and creates a screen in which display content based on the data is superimposed on a screen of video information. A screen synthesizing device 8 and a monitor pure 9 for one display are provided.

In the first embodiment of the present invention configured as described above, the light transmitter 4 frequency modulates the video information captured and output by the video camera 3, and also modulates the frequency of the video information that is output from the video camera 3. In this step, the serial data transmission signal from the data generation and transmission 5 is superimposed on the frequency modulated video signal. Furthermore, the light transmitter 4 controls the light emitting elements in the light transmitter 4 to blink based on this modulation signal, thereby transmitting the video information and the data/evening from the ground to the vehicle as an optical spatial wave signal. .

The on-vehicle light receiver 6 receives this optical signal with a photoelectric element, extracts it as an electrical signal, demodulates the extracted modulated signal, and separates it into a video signal and a data signal.

On the other hand, the on-vehicle distance measuring device 10 measures the distance between vehicles 1a and 1b and outputs it as a data signal. This distance measuring device may be of any type, but for example, it generates ultrasonic waves, detects the reflected waves from the body of the vehicle 1b with a sensor, etc., and calculates the distance from the time difference between transmission and reception. A method that calculates distance can be used.

The data processing device 7 receives data sent from the ground output from the light receiver 6 or data from the distance measuring device 10, and based on these data, displays the data on the monitor pure 9. Generate and output a signal.

The screen synthesis device 8 generates a video signal that provides a screen by combining the video signal output from the light receiver 6 and the data display signal output from the data processing device 7, and provides this video signal to the monitor pure 9. Display. This screen composition device 8 can be configured using a known superimposition method.

The principle of this method is to select the display signal output by the data processing device 7 only during a desired period during the scanning period of one screen of the monitor pure 9, and select the video signal output by the light receiver 6 during the other periods. , these signals are output to the monitor pure 9, and of course processing such as synchronization between both video signals is required.

An example of the display screen on the monitor pure 9 obtained by the first embodiment of the present invention described above is shown in FIG.

In this example, an image taken from the side near the joint of two vehicles to be merged and an image of inter-vehicle distance data using characters and scales are combined and displayed. The size and starting point of the scale display can be calculated in advance based on the positional relationship between the two, the angle of view, and the size of the display screen if the video camera 3 is fixed, assuming that the merged vehicle 1b is always waiting at a fixed position. The information can be set in the data processing device 7 in advance.

The above embodiment can also be applied to cases where multiple video cameras are provided and switched between them, the imaging magnification of the video cameras is changed, or where the location of the vehicle to be merged cannot be specified. These data can then be input into a data generator and transmitted to the vehicle.

Further, in the above embodiment, the inter-vehicle distance is measured on the vehicle, but the inter-vehicle distance may be measured on the ground and the data transmitted on the vehicle.

In the first embodiment of the present invention, data transmission from the ground and data processing on the vehicle are omitted, and a scale display is installed on the platform, etc., and this is photographed on the same screen as the vehicle. It is possible to deform it, and even if it is deformed in this way, the purpose can be achieved in the same way as described above.

According to the first embodiment of the present invention described above, the driver of the vehicle can perform driving operations while monitoring in real time the operational status of disassembly and connection of vehicles at the time of vehicle division and merging. At that time, the most important inter-vehicle distance information is displayed in correspondence with the video, making it possible to improve work efficiency and safety.

The above-described first embodiment of the present invention has been described using inter-vehicle distance information as an example of data related to video information, but data related to video information may include vehicle speed, coupler preparation, etc. It may also be other information such as completion.

FIG. 3 is a block diagram showing the configuration of a second embodiment of the present invention. In FIG. 3, 3a and 3b are video cameras;
11 is a camera changeover switch, 12 is a transmitter, 13 is a light transmitter, 14 is a light receiver, 15 is a receiver, 16 is a relay, and other symbols are the same as in FIG.

This second embodiment of the present invention is different from the first embodiment described above in that two video cameras are provided, and
The difference is that a data transmission means from the vehicle to the ground, a camera changeover switch 11, and a relay 16 are added, but the other configuration is the same as the first embodiment, and the conditions for the video to be monitored are as follows: It can be controlled from onboard the vehicle.

In the second embodiment of the present invention shown in FIG. 3, two video cameras 3a and 3b are provided on the ground side, the video camera 3a having a wide angle and the video camera 3b having a standard angle of view. It is.

On the vehicle, as in the case of the first embodiment of the present invention described above, the crew member monitors the image of the coupling portion displayed on Monitor Pure 9 and controls the operation for coupling or disengaging the vehicle. conduct. At this time, when the crew operates the camera changeover switch 11 as necessary, the signal from this switch 11 is taken into the transmitter 12, outputted as a serial data transmission signal, and converted into an optical signal by the light transmitter 13. Sent out.

A light receiver 14 provided on the ground side receives this optical signal, converts it into an electrical signal, and outputs it to a receiver 15. receiver 1
5 decodes this signal, determines which of the video cameras 3a and 3b to send the image, and controls the relay 16. One of the video outputs from the video cameras 3a and 3b is selected by a contact point of a relay 16 and transmitted to the vehicle.

According to the second embodiment of the present invention described above, the video camera on the ground can be selected by the crew's operation. For example, when the distance between vehicles is large, wide-angle video is displayed, and when the distance between vehicles is close, it is possible to select the video camera on the ground. Detailed monitoring can be performed as needed, such as by using an enlarged image of the vicinity of the device for monitoring purposes.

In the second embodiment of the present invention described above, video cameras are switched manually using a switch.
This switching operation may be performed automatically by detecting the position of the vehicle.

Regarding video selection, instead of using two video cameras and switching between them, for example, a video camera equipped with an electric zoom lens can be used to control the magnification of one video camera from onboard. You can also do this.

Furthermore, in the second embodiment of the present invention described above, if the switching state of the video camera, the magnification setting state, etc. are given to the data generator 5 and transmitted to the vehicle, the present invention described above can be achieved. As in the case of the first embodiment, it can be reflected in the content of data displayed on the monitor pure 9.

According to the second embodiment of the present invention, in addition to the effects of the first embodiment of the present invention, it is possible to display a surveillance video according to the position of the merged vehicle, thereby improving visibility. You can improve your performance.

The first and second embodiments of the present invention described above are examples in which the present invention is applied to monitoring connecting parts when vehicles are divided or merged, but the present invention can also be applied to monitoring station platforms. can.

FIG. 4 is a block diagram showing the configuration of a third embodiment of the present invention in which the present invention is applied to monitoring a station platform. In FIG. 4, 1 is a train, 17 is a traffic management system, 18 is a station platform, and other symbols are the same as in FIG. 3.

The operation of each part in this third embodiment of the present invention is similar to that in the above-mentioned second embodiment, but in this third embodiment,
Video information and data are transmitted between the train and the ground during the time when the train 1 enters the station platform 18, stops, departs, and leaves the station platform 18, and is subject to monitoring. These are passengers getting on and off the train and on the station platform.

In this case, the data that should be displayed on the on-board monitor at the same time as the video to be monitored is, for example, the scheduled departure time of the train.

For this reason, in the illustrated third embodiment of the present invention, data regarding the timetable is given from the traffic management system 17 provided on the ground to the data generator 5, and transmitted onto the train. Further, the video cameras 3a and 3b are arranged so as to share the shooting range according to the length of the station platform 18 and the train 1, and similarly to the second embodiment, the camera changeover switch 11 on the train It is possible to select by operation. Note that the number of video cameras is not limited to two, and may be increased depending on the length of the station platform.

The camera may be switched at regular intervals as the train progresses, but even in this case, if the operation function of the switch 11 on the train is also used, it is possible to prevent images that are deemed dangerous. If this is detected, the driver can give a manual command to take actions such as fixing the screen. In the case of this embodiment as well, by transmitting data from the ground, the camera number corresponding to the display screen, the car number of the vehicle shown on the screen, etc. can be displayed on the same screen as the video information.

According to the third embodiment of the present invention described above, the information necessary for two important tasks, namely safety monitoring at the station and compliance with the train schedule, is displayed on the same screen for the driver to confirm. be able to. In addition, in trains with long trains, etc., multiple images can be switched and displayed for confirmation, so visibility can be improved compared to the case where only a single image is displayed.

In each of the embodiments of the present invention described above, the on-vehicle device may be configured in the same way even when the monitoring targets to which it is applied are different.
The on-vehicle device can be shared for multiple purposes.

In addition, information related to video information may not only be displayed on the same screen as the video, but may also be output in the form of a buzzer sound, audio by voice synthesis, etc. It is effective for calling attention to

Although each of the embodiments of the present invention described above uses optical space transmission as a means of transmitting images and data, the present invention is equally applicable even when other wireless communication means such as radio waves are used. can be configured, and similar effects can be achieved.

[Effects of the Invention] As explained above, according to the present invention, video information and information such as numerical values related to the video information can be displayed in real time.
It is possible to improve visibility and obtain reliable information, thereby improving safety.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the first embodiment of the present invention, FIG. 2 is a diagram showing an example of a display screen, and FIGS. 3 and 4 are diagrams showing the second and third embodiments of the present invention. FIG. 2 is a block diagram showing an example configuration. 1...Train, 1a, 1b...Vehicle, 2
a, 2b...Coupler for each vehicle, 3.3a, 3b...
...Video camera, 4.13...Light transmitter, 5...Data generator, 6.14...
・Photoreceiver, 7... Data processing device, 8...
...Screen synthesis device, 9...Monitor Pure, 10
... Distance measuring device, 11 ... Camera changeover switch, 12 ... Transmission section, 15 ...
...Receiving section, 16...Relay, 17...
...Operation management system, 18...Station platform.

Claims (1)

[Claims] 1. In a monitoring device that transmits video information shot on the ground to a moving body and displays the video information on a display provided on the mobile body, A monitoring device characterized by comprising means for displaying other information simultaneously with video information. 2. A monitoring device characterized by comprising means for displaying information related to the video information on the same screen as the video information. 3. The monitoring device according to claim 1 or 2, wherein the information related to the video information is numerical information. 4. The monitoring device according to claim 1, 2, or 3, wherein the means for transmitting the video information onto a moving object is optical space transmission. 5. The monitoring device according to claim 1, wherein information related to the video information is superimposed on the video information and transmitted onto the mobile object. 6. The monitoring device according to claim 1, wherein the video information is a photograph of one or both of a plurality of vehicles that are separated or connected. 7. Claims 1 to 5, characterized in that the video information is a photograph of the situation on a station platform.
Monitoring device described in item 1 of the items. 8. The monitoring device according to claim 1, wherein the video information is a photograph of the moving object itself that receives the video information. 9. The information related to the video information includes the position of the moving object, the distance between the moving objects, the length of the object, the time, the speed of the moving object, the acceleration/deceleration of the moving object, and signal appearance information. A monitoring device according to any one of claims 1 to 8, characterized in that the monitoring device is at least one of the following. 10.Equipped with a camera that shoots images for creating video information,
Claims 1 to 8 are characterized in that the lens of the camera has a variable magnification, and the information related to the video information is information indicating the magnification of the video information being transmitted.
Monitoring device described in item 1 of the items. 11. A patent characterized in that it includes a plurality of cameras that take pictures for creating video information, and the information related to the video information is information indicating which camera the displayed video was taken by. A monitoring device according to one of claims 1 to 8. 12. The monitoring device according to claim 1, further comprising means for transmitting information from the mobile object to a ground device. 13. The monitoring device according to claim 10, wherein the information transmitted from the mobile object to the ground device is information for commanding the magnification of the camera provided on the ground. 14. Claims characterized in that the information transmitted from the mobile body to the ground device is information for instructing which of the plurality of cameras installed on the ground should select video information. The monitoring device according to item 11. 15. Claim 1 further comprising means for notifying information related to the video information by sound.
The monitoring device according to one of items 1 to 14. 16. Claims 1 to 15, characterized in that the device provided on the moving body is shared for displaying multiple types of video information and multiple pieces of information related thereto. The monitoring device described in item 1 of the above.