JP2002150471A - Road-monitoring system and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road-monitoring system and a method therefore, capable of finding a traffic accident early and correctly, and contacting all concerned, without requiring man power operation. SOLUTION: In radiocommunication between an information-receiving device 1, installed in a road monitoring section and an information-transmitting device in an on-vehicle device 9, separate communication connection is first established by communication connection processing devices 7 and 8. Traveling speed information and position information of vehicle are then continuously transferred in a short cyclic period from a vehicle information transfer device 3 to a vehicle information-receiving device 4. Changes in the vehicle traveling speed in the road-monitoring section is grasped by an information processing device 5, based on the traveling speed information. Generation of accident is thus determined, and a position, where the accident occurred at the time when generation of the accident is determined on or before or after that, is determined. The results of these are notified to an operator via an information display and alarm notification device 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road monitoring system and method for detecting and reporting traffic accidents, particularly on highways, motorways, bridges for large vehicles, tunnels, underground motorways, and the like. Things.

[0002]

2. Description of the Related Art Conventionally, the detection of a traffic accident occurring on a road and the communication with relevant authorities, such as the police in charge, were performed by pedestrians and local residents who happened to be near the site, and by witnesses and parties concerned. Call by phone, etc.
He relied on human methods.

[0003]

However, there are usually no pedestrians or inhabitants to be witnesses, and highways, motorways, large-scale automobile bridges, tunnels, In the case of an underground motorway or the like, the above-described method delays the discovery and communication of an accident, which delays the processing of the accident and may cause further accidents and congestion.

[0004] In a place where the damage caused by the accident is expected to be extremely large, such as a part of a long tunnel, the road is remotely monitored using a camera. The range of possible roads is narrow, there is a risk that accidents can not be discovered unless the accident occurrence is overlooked or spread within the range that can be monitored, and the operator must constantly monitor the video taken by the camera, There was a problem that operation by humans was large.

An object of the present invention is to provide a road monitoring system capable of detecting traffic accidents on roads, particularly highways, motorways, bridges for large-scale vehicles, tunnels, underground motorways, etc. at an early stage, and contacting concerned parties and the like. It is to provide a method.

It is another object of the present invention to provide a road monitoring system and a method thereof which can accurately detect a traffic accident and can contact relevant persons without requiring manual operation.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a road monitoring section on a road, here, a point on a road where a radio signal from a vehicle can be received is set as a starting point, and reception is disabled. Establish a road monitoring section with the end point as the end point, and establish, hold, and release the communication connection for vehicles entering and exiting this section (the starting point releases the communication connection, the end point releases the communication connection). ), A situation in which each of a plurality of vehicles traveling in the section can be identified and communicated at all times is set, and the traveling speed information and the position information from each vehicle are continuously transmitted in a short cycle. The accident is determined based on the sudden change in the traveling speed. A system without establishing a communication connection is also possible. In this case, the vehicle identification information is transmitted together with the information.

It is conceivable that the traveling speed information from a vehicle that directly encountered an accident may be stopped at the time of the accident or the information may be interrupted, and this may be one piece of accident determination information. Furthermore, in order to grasp the speed changes of multiple vehicles, information from the vehicles affected by the accident can be immediately obtained as speed changes, and as continuous vehicle stop information immediately after the accident, even if the accident is not directly encountered. Because it can be grasped, accurate and extremely quick accident judgment and notification to the operator are possible.

Further, the similarity with the case of the past traveling speed enables more accurate accident judgment. Further, the position of the accident occurrence in the road monitoring section can be estimated from the position information.
The position information is sent together with the traveling speed information. If this is not possible, it can be estimated from the traveling speed information and the information of the time when it was received.

[0010] The configuration of the present invention is based on ITS (Intelli).
wireless communication between a road and a vehicle, which is adopted in the G.T. A device is provided for transmitting the vehicle at a short cycle together with the traveling speed and, if possible, the position information. In addition, an antenna for wireless communication is installed on the road, a device for wirelessly notifying information is installed on the vehicle side, the information is transmitted from the vehicle, received by the antenna on the road, and information on the rear side is provided. Transfer to processing unit. If the communication connection is established, the vehicle is identified by this method. If the communication connection is not established, the vehicle identification information is further transmitted. The information processing device includes a device that receives such information outside the vehicle, a device that performs a process for determining the occurrence of an accident and a position determination based on the information, and a device that performs an alarm or display related to the accident.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration and operation of the present invention will be described below in detail based on embodiments.

FIG. 1 shows a first embodiment of a road monitoring system according to the present invention, in which a communication connection is set.

In the present embodiment, the communication connection processing device 8 outside the vehicle, the vehicle information receiving device 4, the information processing device 5, and the information display / alarm notification device 6 are collectively included in the information processing device 1.
0, and the information transmitting apparatus 2, the communication connection processing apparatus 7, and the vehicle information transferring apparatus 3 installed in the vehicle are collectively configured as an in-vehicle apparatus 9, but each apparatus is individually configured. It doesn't matter.

In FIG. 1, an information receiving device 1 is installed on a road and has a function of receiving information from a vehicle by wireless communication. An information transmitting device 2 is installed in a vehicle and transmitted to the information receiving device 1 by wireless communication. It is a device having a function of transmitting information.

The communication connection processing device 7 is a device that is installed in the vehicle and has a function of establishing, suspending, and releasing a communication connection with a communication connection processing device 8 installed outside the vehicle.

If the single information receiving apparatus 1 cannot cover the entire road monitoring section, a plurality of information receiving apparatuses 1 are installed as shown in FIG. When the information transmission destination is changed to 1, the communication connection processing device 8 has a handover function of suspending the communication connection.

The vehicle information transfer device 3 is installed in a vehicle,
The current traveling speed of the vehicle and, if possible, the position information of the vehicle are held, updated in a short cycle, and each information is continuously transmitted to the information receiving device 1, the information transmitting device 2, the communication connection processing device 7. , 8 for transmission. The vehicle information receiving device 4 receives the information, adds reception time information, and transfers the information to the information processing device 5.

The information processing device 5 processes the information on the traveling speeds of a plurality of vehicles to grasp a change in speed, and determines the occurrence of an accident based on the information. The location of the accident is determined from the location information. The information display / alarm notification device 6 displays the state of the speed change, the accident occurrence status, and the alarm recognized by the information processing device 5. One or more information receiving apparatuses 1 installed on the road are connected to a remote communication connection processing apparatus 8 via a network.

The operation in FIG. 1 will be described.

First, when a vehicle arrives at a road monitoring section,
A communication connection is established between the communication connection processing device 7 in the in-vehicle device 9 and the communication connection processing device 8 in the information processing device 10 by wireless communication via the information receiving device 1 and the information transmitting device 2. After that, the vehicle information transfer device 3 immediately transmits the information on the current traveling speed and position to the information receiving device 1, the information transmitting device 2, the communication connection processing devices 7 and 8, and
The vehicle information receiving device 4 by the communication connection via the
Transfer to

The vehicle information receiving device 4 adds the time information when the information is received and immediately transfers the information to the information processing device 5. The vehicle information transfer device 3 transfers the position information to the vehicle information receiving device 4 in a short cycle when traveling speed information is possible as time elapses as speed and position information that changes every moment.

This operation is continuously performed while the communication connection is suspended. The same operation is performed on a plurality of vehicles.

As a result, the information processing device 5 holds the traveling speed information and the position information at that time for a plurality of vehicles at every moment, and can grasp the traveling speeds and the lapse of time of the positions of the plurality of vehicles. Accidents are instantaneously determined using these pieces of information.

For example, if information on a certain vehicle is interrupted, there is a possibility of an accident, and another vehicle can be judged as an accident by detecting a sudden decrease in speed at the same time due to the influence. It is also possible to grasp a detailed position from the position information. In addition, there is a possibility of an accident even if only a rapid decrease in speed of a plurality of vehicles occurs, and the accuracy can be improved by comparing with a past case.

FIG. 2 shows a configuration example of the information processing apparatus 5 having such a function.

The vehicle identification device 11 identifies a vehicle based on a communication connection. With the establishment and release of the communication connection, it is determined whether a new vehicle has arrived at the road monitoring section, the vehicle has been registered and distinguished from other vehicles, and the vehicle has left the section. The temporary information storage device 12 stores the vehicle identification device 11
The transmitted information is temporarily stored for each vehicle by using the judgment of (1).

The accident judging device 13 judges an accident based on the information of each vehicle by the vehicle identifying device 11. As described above, the result of the accident judgment is displayed on the information display / alarm notification device 6 to indicate the accident occurrence situation and the alarm, and the judgment result and the calculated numerical value that has reached it, and the unprocessed data sent from the vehicle as necessary. Is stored in the information storage device 14 for a long time.

The present invention does not refer to a detailed accident determination algorithm for speed conditions. For vehicles that cannot hold or transmit location information,
The position is estimated from the traveling speed information and the reception time information given by the vehicle information receiving device 4. Specifically, the traveling distance of the vehicle obtained from the traveling speed information received from the start of receiving the traveling speed information to the determination of the occurrence of the accident and the reception time is determined by the position of the start point of the road monitoring section (the known position). The accident occurrence position is estimated by adding to (1).

After judging the accident, the operator is immediately notified using the information display / alarm notification device 6. Alarm notification methods include sound and screen display, but are not mentioned in the present invention. Further, in the present apparatus, the instantaneous speed change of the vehicle can be displayed without an alarm notification.

FIG. 3 shows a second embodiment of the road monitoring system according to the present invention, in which a communication connection is not set.

As compared with the first embodiment, the configuration is different from that of the on-vehicle communication connection processing device 7 and the communication connection processing device 8 outside the vehicle. In this case, since there is no communication connection, vehicle identification information for each vehicle is added to the traveling speed information and the time information transmitted from the vehicle, and the data is transferred. As a result, the information processing device 5 can identify the vehicle, and can grasp the time change of the traveling speed for each vehicle.

The configuration of the information processing device 5 may be the same as that shown in FIG. 3 when a communication connection is set.
In step 1, using a vehicle identification information sent from a vehicle instead of a communication connection, a new vehicle arrives at a road monitoring section, the vehicle is registered and distinguished from other vehicles, and the vehicle leaves the section. Judge.

When setting a communication connection,
In both cases where the setting is not performed, an opportunity for the vehicle information transfer device 3 to start information transfer is required.

When a communication connection is set, a method of issuing an information transfer request from the information processing device 5 or the vehicle information receiving device 4 to the vehicle information transfer device 3 after establishing the communication connection can be considered. In addition, the vehicle information transfer device 3 applicable to one of the case where the communication connection is installed and the case where the communication connection is not installed transmits information serving as a trigger for starting information transfer at an entrance of a road section. A method of reacting is conceivable.

[0035]

In the past, the detection of an accident and the communication to concerned parties have relied on human methods of sightings by pedestrians and nearby residents and reports from those witnesses and parties.
In some cases, remote monitoring by a camera or the like is performed in a tunnel, a highway, or the like. However, in the former as well as in the latter, the range that can be monitored by the camera is limited, and since it is a human operation to determine an accident from a camera image, there is a high possibility that the accident detection will be delayed.

On the other hand, according to the present invention, since an accident is determined based on a change in the speed of a vehicle, it has extremely high responsiveness and few oversights, and has features such as an expressway, a motorway, and a large-scale automobile. It is particularly effective on motorways such as road bridges, tunnels, and underground roads where human handling is difficult.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of a road monitoring system of the present invention.

FIG. 2 is a configuration diagram illustrating an example of an information processing apparatus.

FIG. 3 is a configuration diagram showing a second embodiment of the road monitoring system of the present invention.

[Explanation of symbols]

1: information receiving device, 2: information transmitting device, 3: vehicle information transferring device, 4: vehicle information receiving device, 5: information processing device,
6: information display / alarm notification device, 7, 8: communication connection processing device, 9: in-vehicle device, 10: information processing device,
11: vehicle identification device, 12: temporary information storage device, 13:
Accident determination device, 14: information storage device.

Claims (12)

[Claims] At least one device is provided on a road in a road monitoring section and wirelessly transmits and receives information to and from a running or stopped vehicle, and is provided in the vehicle and wirelessly communicates with the first device. Second means for transmitting and receiving information; installed in the vehicle, holding at least traveling speed information of the vehicle, and continuously transmitting the information to the outside of the vehicle in a short cycle using the first and second means. A third means, a fourth means for receiving at least the traveling speed information of the vehicle transferred from the third means, and receiving at least the traveling speed information of the vehicle from the fourth means,
Fifth means for detecting a change in the running speed of the vehicle in the road monitoring section based on the running speed information and determining the occurrence of an accident based on the change. 2. The road monitoring system according to claim 1, further comprising: a sixth means for displaying a judgment result of the fifth means or notifying an operator by alarm notification. 3. The road monitoring system according to claim 1, wherein the road monitoring system is installed in the vehicle, holds at least traveling speed information and position information of the vehicle, and continuously uses the first and second means in a short cycle. A third means for transferring the information to the outside of the vehicle, a fourth means for receiving at least the traveling speed information and the position information of the vehicle transferred from the third means, Fifth means for receiving the traveling speed information and the position information, detecting a change in the traveling speed of the vehicle in the road monitoring section from the traveling speed information, judging the occurrence of an accident based on the change, and judging the accident occurrence position from the position information. And a road monitoring system comprising: 4. The road surveillance system according to claim 1, wherein at least the traveling speed information of the vehicle transferred from the third means is received and the time at that time is added; Receiving at least the reception time together with the traveling speed information of the vehicle from the means, capturing the change in the traveling speed of the vehicle in the road monitoring section from the traveling speed information, determining the occurrence of an accident based on the change, and starting to receive the traveling speed information. From the traveling speed information received until the determination of the occurrence of the accident and the traveling distance of the vehicle determined from the reception time,
A sixth means for determining an accident occurrence position by adding the start position of the road monitoring section to the position of the start point of the road monitoring section. 5. The road surveillance system according to claim 1, wherein said road monitoring system is installed outside the vehicle and the vehicle, respectively, and has a separate communication connection between the vehicle and the outside of the vehicle using first and second means. Seventh and eighth means for establishing, suspending and releasing the vehicle, and receiving at least traveling speed information of the vehicle from the fourth means,
A road monitoring system comprising: a fifth means for determining at least occurrence of an accident by identifying a plurality of vehicles existing in the road monitoring section at the same time by an individual communication connection. 6. The road monitoring system according to claim 1, wherein the road monitoring system is installed in a vehicle, holds at least traveling speed information of the vehicle and individual vehicle identification information, and uses first and second means. Third means for continuously transferring the information to the outside of the vehicle in a short cycle; fourth means for receiving at least the traveling speed information of the vehicle and the individual vehicle identification information transferred from the third means; Receiving at least the traveling speed information of the vehicle and the individual vehicle identification information from the fourth means, and determining at least the occurrence of an accident by identifying a plurality of vehicles that are simultaneously present in the road monitoring section by the vehicle identification information; A road surveillance system comprising five means. 7. A vehicle is configured to transmit at least traveling speed information continuously from a vehicle by a radio signal in a short period, and a start point is set on a road on which a radio signal from the vehicle can be received, and a point on a road where reception is impossible is ended. At least the traveling speed information is continuously received in a short period within the road monitoring section at the point, and a change in the traveling speed of the vehicle in the road monitoring section is detected based on the traveling speed information, thereby determining the occurrence of an accident. Characteristic road monitoring method. 8. The road monitoring method according to claim 7, wherein the judgment result of the occurrence of the accident is notified to an operator by displaying or notifying an alarm. 9. The road monitoring system according to claim 7, wherein the determination of the accident occurrence position includes the step of causing the vehicle to continuously transmit at least the traveling speed information and the position information by a wireless signal in a short cycle, and At least continuously receive position information along with at least traveling speed information in a short cycle,
A road monitoring method, wherein the method is performed based on the position information. 10. The road surveillance system according to claim 7, wherein the determination of the accident occurrence position stores the time at each time when the traveling speed information is received, and the accident is determined after the reception of the traveling speed information is started. The traveling distance of the vehicle obtained from the traveling speed information and the reception time received until the occurrence of the vehicle is determined,
A road monitoring method, wherein the method is performed by adding the start point of a road monitoring section to the position of the starting point. 11. The road monitoring method according to claim 7, wherein a plurality of vehicles existing simultaneously in the road monitoring section are identified.
A road monitoring method which is performed by establishing an individual communication connection by a radio signal with each vehicle. 12. The road monitoring method according to claim 7, wherein identification of a plurality of vehicles existing simultaneously in the road monitoring section includes:
A road monitoring method characterized by transmitting at least individual vehicle identification information together with at least travel speed information from each vehicle by a radio signal, and receiving at least individual vehicle identification information together with at least travel speed information within a road monitoring section.