JPH04310200A - Crossing monitoring device - Google Patents

Abstract

PURPOSE:To exactly confirm the condition or the like of a traffic accident generated at a crossing. CONSTITUTION:The entire crossing is monitored by plural video cameras 1a and 1b, and image information respectively transmitted from the respective video cameras 1a and 1b are synthesized into one divided picture. This synthesized image information is stored in recording means 6a and 6b after writing time information. When the traffic accident is generated at the crossing, the image information stored in the recording means 6a and 6b is reproduced and displayed at a display means 7 together with the time information.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intersection monitoring device for monitoring the condition of road intersections, and more particularly to an apparatus for facilitating confirmation of the occurrence of an accident.

0002

BACKGROUND OF THE INVENTION Due to the rapid increase in the number of automobiles, traffic accidents are occurring frequently, especially at intersections. When a traffic accident occurs at an intersection, it is necessary to check the circumstances of the accident, the time of the accident, and whether the traffic signals in the main direction or in the secondary direction are in the forward direction. Conventionally, when police officers check the circumstances of an accident, they ask the person who caused the accident or a third party to confirm the circumstances of the accident and the status of traffic lights.

0003

[Problem to be solved by the invention] However, if there is no third party to hear the circumstances of the accident or the status of the traffic lights, for example, if an accident occurs at an intersection at night, it is difficult to accurately confirm the status of the traffic lights. The disadvantage was that it took a long time to resolve the accident. Another disadvantage is that if the status of traffic lights and the like cannot be accurately confirmed, errors may occur in the confirmation of accidents.

[0004] The present invention has been made in order to solve these shortcomings, and an object of the present invention is to provide an intersection monitoring device that can accurately confirm the status of traffic accidents occurring at intersections.

[0005]

[Means for Solving the Problems] An intersection monitoring device according to the present invention includes a plurality of video cameras that monitor the entire intersection, and an image synthesizing means that synthesizes image information sent from the plurality of video cameras into the same divided screen. , a time information writing means for writing time information into the image information synthesized on the same screen, and a recording and reproducing means for storing the image information with the time information written in the recording means and reproducing the image information stored in the recording means. and display means for displaying the reproduced image information.

[0006]

[Operation] In this invention, the entire intersection is monitored by a plurality of video cameras, and the image information sent from each video camera is combined into the same divided screen. Time information is written to this combined image information and stored in the recording means. When a traffic accident or the like occurs at an intersection, the image information stored in the recording means is reproduced together with time information and displayed on the display means.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the present invention. As shown in the figure, the intersection monitoring device includes a plurality of, for example, two video cameras 1a and 1b, and a video camera 1a.
, 1b, and a time writing means 4 for writing the time sent from the clock 3 into the image information synthesized by the image synthesizing means 2.
The image information on which the time has been written by the time writing means 4 is sequentially recorded on the video tapes 6a, 6b.
The recording/reproducing means 5 comprises a video tape recorder for reproducing the image information recorded on the video tape and displaying it on the display means 7.

The two video cameras 1a and 1b are placed at opposite corners of a road intersection 8, as shown in the layout diagram of FIG. 2, and the video camera 1a has a viewing angle A of approximately 90 degrees. The situation inside the intersection 8 and the current state of the traffic signal 9a in the main direction and the traffic signal 10a in the secondary direction are photographed. The video camera 1b also has a viewing angle B of approximately 90 degrees, and the situation within the intersection 8 and the other traffic signal 9b in the main direction and the secondary direction,
10b is photographed.

In the intersection monitoring device configured as described above, the situation inside the intersection 8 and the current state of the traffic signals 9a to 10b are constantly photographed by the video cameras 1a and 1b and sent to the image composition means 5. The image synthesis means 5 is a video camera 1a.
, 1b are combined so as to be displayed on screens 12a and 12b of the same screen 11 divided into four parts as shown in FIG. 3, and the combined image information is sent to the time information writing means 4. The time information writing means 4 writes the time sent from the clock 3 into the sequentially sent image information, and sends the image information with the time written thereto to the recording/reproducing means 5. Recording and reproducing means 5
records the sent image information on video tapes 6a and 6b.

As shown in the time chart of FIG. 4, this recording/reproducing means 5 has an internal control timer that sets a recording instruction time T for repeated recording to, for example, 6 hours, and a recording speed of 3 times. ing. First, the video tape 6a is selected and image information is recorded on the video tape 6a until the recording command time T has elapsed. When the recording command time T has elapsed, a command is given to rewind videotape 6a, and at the same time, switching to videotape 6b is continued.
Record image information in b. In this way, while repeatedly switching between the video tapes 6a and 6b, image information representing the situation within the intersection 8 and the current state of the traffic signals 9a to 10b and time are recorded.

When a traffic accident occurs within the intersection 8 in this state, the recording/reproducing means 5 is operated to record the video tape 6a.
Alternatively, the image information recorded on the video tape 6b is reproduced and displayed on the display means 7. The display means 7 shows the situation inside the intersection 8 when the accident occurred on the divided screen 12a of FIG.
12b as a continuous image, the screen 12a displays the current state of the traffic lights 9a and 10a, the screen 12b displays the current state of the traffic lights 9b and 10b, and the time display section 13 displays the time. . In this way, when a traffic accident occurs within the intersection 8, the state in which the accident occurred and the conditions before and after the accident can be displayed on the display means 7 along with time, so that the image displayed on the display means 7 can be checked. By doing so, you can accurately confirm the circumstances of the accident. When reproducing the accident situation, it can be displayed on the display means 7 and a printed photograph can also be created using a video printer.

[0011] In the above embodiment, the case where two video cameras are installed has been described, but depending on the situation, four video cameras may be installed. Further, in the above embodiment, the clock 3 and the time information writing means 4 are provided independently, but the clock 3 and the time information writing means 4 are provided separately from the video camera 1a.
, 1b.

0012

Effects of the Invention As explained above, the present invention monitors the entire intersection with multiple video cameras, combines the image information sent from each video camera on the same divided screen, and adds time information to the combined image information. is written and stored in the recording means. Furthermore, when a traffic accident occurs at an intersection, the image information stored in the recording means is played back and displayed on the display means, making it possible to accurately confirm the state in which the accident occurred and the cause of the accident. Detection errors such as the following can be prevented.

[0013] Furthermore, since the time of occurrence of the accident can be displayed together with the state of the accident, it is possible to easily perform a search when displaying the state of the accident.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the invention.

FIG. 2 is a layout diagram of a video camera in the above embodiment.

FIG. 3 is an explanatory diagram showing a screen of the above embodiment.

FIG. 4 is a time chart showing the operation of the above embodiment. 1a, 1b Video camera 2 Image composition means 3 Clock 4 Time writing means 5 Recording/reproducing means 6a, 6b Video tape 7 Display means 8 Intersection

Claims (1)

[Claims] Claim 1: A plurality of video cameras that monitor the entire intersection; an image composition means that composes image information sent from the plurality of video cameras into the same divided screen; and time information on the image information composited on the same screen. a time information writing means for writing the time information; a recording and reproducing means for storing the image information written with the time information in the recording means and reproducing the image information stored in the recording means; and a display means for displaying the reproduced image information. An intersection monitoring device comprising: