JP3189570B2 - Road information providing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road information providing device for broadcasting road traffic information, such as accidents, traffic jams, and speed restrictions, to vehicles running on a highway or other road.

[0002]

2. Description of the Related Art FIG. 6 is a system configuration diagram of a conventional road information providing apparatus. In FIG. 6, the information exchange processing device 1
Collects road information and organizes it as event information. The roadside communication central unit 2 creates text based on event information transmitted from the information exchange processing device 1 and creates digital voice data based on the text. In the man-machine device 3, an operator manually inputs an event or inquires of a message. The operator console 4 is used by an operator to input a voice or to instruct the start / stop of broadcasting. The terminal control device 5 controls audio broadcasting in the transmitter. The transmitter 6 broadcasts sound on the road. Terminal board 7 interrupts the signal between terminal controller 5 and transmitter 6.

When event information such as traffic congestion and accidents is transferred from the information exchange processing device 1 or the man-machine device 3 to the roadside communication central unit 2, the roadside communication central unit 2 adopts any of these events. Is selected for each provision point of the roadside broadcast, and the text is edited based on the content of the selected event. This sentence is composed of words and sentences registered in the hard disk in advance.

[0004] When the text has been edited, the roadside communication central unit 2 creates a message voice by combining the analysis and synthesis digital voice data corresponding to each word or sentence. Digital voice data for analysis and synthesis corresponding to each word or sentence is registered in the hard disk in advance.

[0005] Next, the roadside communication central unit 2 transfers the digital voice of the message to the terminal control unit 5. The terminal control device 5 converts the received digital voice into analog data and transmits the analog data to the transmitter 6. The transmitter 6 broadcasts the converted voice to vehicles on the road.

[0006] Since the broadcasting time of the road information providing device is limited (generally 60 seconds), the number of events that can be broadcast is also limited, and it is impossible to broadcast all events that occur on the road. It is. Therefore, it is very important to prioritize events that have a large effect on the traveling vehicle.

The method of selecting an event will be described in detail. The selection of the event is performed by a selection order table defined for each providing point. This table is defined by the content of the event and the section in which the event has occurred. Here, the section is the minimum unit on the route when performing traffic congestion determination and event registration. For example, FIG. 7 shows a positional relationship between a provision point P and sections A to I in which an event occurs. (Table 1) is a table showing the priority of event selection at the provision point P.

[0008]

[Table 1]

In this (Table 1), the extent to which the content of the event affects the running of the vehicle and the extent to which the event occurrence point (sections A to I) is related to the vehicle listening to the roadside broadcast are shown. The provision priority of each event is determined by the combination of the two parameters. For example, the traffic congestion that occurs in the road section A is set to have a higher priority of provision than the accident that occurs in the road section H. The criterion for creating this table was subjectivity based on the abundant experience of experienced persons who know the road conditions well.

[0010]

However, the conventional event selection method in the road information providing apparatus has the following problems in creating the priority order table. (1) Only experienced people can create tables. (2) It takes a very long time to create a table. (3) The basis of the priority order is ambiguous.

[0011] The present invention is to solve such a conventional problem, and to select an excellent road information providing apparatus capable of accurately determining the priority of event selection by a simple calculation even without an experienced person. It is intended for.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a road information providing apparatus which includes a means for providing road information providing means, an event priority indicating the type and content of an event, and a relation between other events. Evaluation value calculation means for calculating an event evaluation value from two elements of the degree of event relevance indicating the degree, and a combination of the evaluation value calculation means and the evaluation value of the event occurrence point determined by the degree of arrival of the traffic flow from the information providing point And a priority determining means for determining a final priority.

[0013]

Therefore, according to the present invention, the above-mentioned means enables the evaluation value calculating means to calculate an event evaluation value for each road information providing point for the road information, and the order determining means to calculate the event evaluation value and the road information. The priority is determined based on a combination with the ratio of the vehicles passing the providing point reaching the point where the event occurs.

[0014]

【Example】

Embodiment 1 Hereinafter, a road information providing apparatus according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of the road information providing apparatus of the present embodiment, and FIG. 2 is a flowchart of determining priority of event information in the present embodiment.

In FIG. 1, a roadside communication central unit 9 selects and edits event information with respect to event information collected and organized by the information exchange processing unit 1 or additional information input by the man-machine device 3. Means for selecting event information based on a previously registered event priority, event relevance, detailed information addition, and the like, and sending the selected event information to the terminal control device 5.

Next, the flow of event priority determination in the road information providing apparatus of the present embodiment will be described with reference to FIG.

(Step 11) The event priority Fp is determined using the event priority table of (Table 2).
The event priority Fp is an index for judging the importance of the event based on the type of the event (accident or construction, etc.) and the content (whether there is no traffic, etc.). Increase selection priority. The event priority table can be set for each roadside broadcasting point,
Basically, the priority of obstacle events such as accidents and construction is higher than that of traffic jams, the priority of those with lane regulation is higher for the same type of events, and the priority of the longer traffic jam length is higher for traffic jam events Make it higher.

[0018]

[Table 2]

(Step 12) The event relevance Fr is determined using the event relevance table of (Table 3).
The event association indicates that, when there is an event closely related to the occurrence of a certain event, those events are provided in association with each other rather than separately. The smaller the value of Fr, the higher the priority of event selection. As the number of related events increases, the importance of the event is considered to be higher, and the value of Fr is set to be smaller.

[0020]

[Table 3]

[0021] (Step 13) using detailed information adding degree table (Table 4), to determine the detailed information additional degree Fa.
The detailed information addition degree indicates whether information is added to the event from the man-machine device. Fa
The smaller the value of is, the higher the event selection priority.
When the detailed information is added, the importance of the event is considered to be high, and the value of Fa is set to be small.

[0022]

[Table 4]

(Step 14) The event evaluation value Iass is determined by the following (Equation 1) based on the event priority Fp, event relevance Fr, and detailed information addition degree Fa calculated in steps 11 to 13.

[0024]

(Equation 1)

(Step 15) Using the OD group table of (Table 5), the point where the event occurred is classified into a short distance, a short distance, a medium distance, and a long distance based on the OD priority of the point. The OD priority is an index indicating the degree of arrival of the traffic flow from the providing point (the ratio of vehicles passing through the providing point to a certain point). The smaller this value is, the higher the degree of reaching the traffic flow is. The OD priority is set in advance for each block by a traffic flow survey, but basically, the closer the block is to the providing point, the higher the vehicle reach. (A block is a unit on a route divided at the intermediate part of an interchange or radiation, and a set of the above sections is a block, and a set of blocks is a route.) In a roadside communication system, a providing point (currently passing It is assumed that the event that occurs at a point with a higher degree of arrival from the point) has a higher evaluation value of the event occurrence point.

The OD group table can be set for each roadside broadcast providing point.

[0027]

[Table 5]

(Step 16) A final numerical value of the event priority is determined by a combination of the event evaluation value Iass calculated in steps 11 to 14 and the evaluation value (OD group) of the event occurrence point determined in step 15. (Table 6). The smaller the event, the more
The provision priority becomes higher. When a plurality of events correspond to the same provision priority, the event evaluation value Ias
The priority of an event having a small value of s is increased.

[0029]

[Table 6]

As described above, according to the above-described embodiment, there is an advantage that the selection priority of the event can be determined based on the magnitude relation of the numerical values.

Embodiment 2 Hereinafter, a road information providing apparatus according to a second embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a block diagram of the road information providing apparatus of the present embodiment, and FIG. 4 is a flowchart of determining the priority of event information in the present embodiment.

In FIG. 3, the automatic answering telephone central unit 18
Is a means for selecting and editing event information using the traffic volume as an index instead of the index of the vehicle arrival level in the first embodiment. The telephone answering device 19 provides the event information selected and edited by the automatic answering telephone central device 18 to the user via a telephone line.

Next, the flow of the event priority determination in the road information providing apparatus of this embodiment will be described with reference to FIG.

(Steps 11 to 14) The event evaluation value Iass is calculated in the same manner as in the first embodiment.

(Step 25) The evaluation value of the event occurrence point is calculated. In the first embodiment, since the target of the provided information is the driver traveling on the road, the OD group is set based on the vehicle arrival from the providing point. On the other hand, in the present embodiment, the wide area information is provided by telephone, and since the user does not know which route / direction to use, it is not possible to use the index of the vehicle arrival level used in the first embodiment. Therefore, in the present embodiment, the average value of the daily traffic volume for all routes / directions is used as an index, and the evaluation value of an event occurring on a route with a large traffic volume is increased.

(Table 7) is a route priority table that classifies the target routes of the wide area information according to the number of passing vehicles. A large line, a middle line, and a small line are set in order from the line with the largest number of traffic.

[0038]

[Table 7]

(Step 16) As in the first embodiment, the provision priority of each event is determined by a combination of the event evaluation value Iass calculated in steps 11 to 14 and the evaluation value (route division) of the event occurrence point determined in step 25. Is determined (Table 8).

[0040]

[Table 8]

As described above, according to the above-described embodiment, there is an advantage that the wide area information can be provided by telephone by statistically investigating the traffic volume for each target route / direction in advance and defining it in a table.

Embodiment 3 Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.

FIG. 5 is a flowchart for determining the priority of event information in this embodiment. The configuration of the present embodiment is the same as that of the second embodiment, and details of each step of FIG. 5 shown in FIG. 3 will be described below.

(Steps 11 to 14) The event evaluation value Ias is determined by the event priority determination in the same manner as in the first embodiment.
Calculate s.

(Step 35) The evaluation value of the event occurrence point is calculated. As in the second embodiment, traffic information is provided by telephone, but in this embodiment, a user specifies a route to be used with a push button according to voice guidance. It is the same as the roadside communication system according to the first embodiment in that the route to be used and the starting point of the direction are clear. However, in the roadside communication system, the subject is already running on the route and it is considered that "the event occurrence point is the running route or the connection route" is not so conscious, whereas in this embodiment, the use route is determined by telephone. It is important to specify whether or not the event occurrence point is on the specified route.

Therefore, in the present embodiment, the event occurrence points are classified into designated routes, related routes, and other engine routes, and the evaluation value is increased in this order (Table 9).

[0047]

[Table 9]

(Step 16) As in the first embodiment, the provision priority of each event is determined by a combination of the event evaluation value Iass calculated in steps 11 to 14 and the evaluation value (route division) of the event occurrence point determined in step S5. Is determined (Table 10).

[0049]

[Table 10]

As described above, according to the above-described embodiment, there is an advantage that the occurrence point of an event is classified into a designated route, a related route, and another engine route, and the provision priority numerical value of each event can be determined.

[0051]

According to the present invention, as is apparent from the first embodiment, the road information providing device is provided with the road information providing means, the event priority indicating the type and content of the event, and the degree of association with other events. Evaluation value calculating means for calculating an event evaluation value from the two factors of the event relevance degree, and a combination of the evaluation value calculation means and the evaluation value of the event occurrence point determined by the arrival degree of the traffic flow from the information providing point. And a priority determining means for determining a final priority, calculating two evaluation values of the event content by two elements of the event priority and the event relevance defined in the table, and in the roadside communication system, the event occurrence point The value of the degree of reach of the traffic flow is statistically investigated in advance by route survey as the evaluation value of, and a numerical value is obtained by combining these two evaluation values. Saw to it is possible to obtain the selection priority of the event. Furthermore, even if it is not an experienced person, it is possible to easily determine the selection priority of the event in a short time, and it is possible to easily change and adjust each index value.

The present invention also provides a road information providing means by telephone line, an order value determining means for determining a final priority from a combination of an evaluation value calculating means and an evaluation value of an event generating line determined by traffic volume. Is established, and the traffic volume for each target route / direction is statistically investigated in advance and defined in a table, so that the evaluation value of the event occurrence point can be obtained in the wide area information of the automatic answering telephone system in which the departure place and the destination are not specified. This has the effect that it can be determined objectively.

The present invention also provides a means for providing road information via a push button line, an evaluation value calculating means and a route designated by telephone (designated route), a route connected to the designated route (related route), or a route of another organization. Order determination means for determining a final priority order from a combination with the evaluation value of the determined event occurrence route, and in the route designation information of the automatic response telephone system for designating the route to be used with a push button, the event occurrence point Is classified into a designated route, a related route connected to the designated route, and another engine route, and is defined in a table in advance, thereby providing an effect that an evaluation value of an event occurrence point can be objectively obtained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a road information providing device according to a first embodiment of the present invention;

FIG. 2 is a flowchart for determining an event selection priority in the first embodiment of the present invention;

FIG. 3 is a configuration diagram of a road information providing device according to a second embodiment of the present invention;

FIG. 4 is a flowchart for determining an event selection priority in a second embodiment of the present invention;

FIG. 5 is a flowchart for determining an event selection priority in a third embodiment of the present invention;

FIG. 6 is a configuration diagram of a conventional road information providing device.

FIG. 7 is a diagram illustrating a relationship between an information providing point and an event occurrence point of the conventional road information providing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Information exchange processing device 2 Roadside communication central device 3 Man-machine device 4 Operator console 5 Terminal control device 6 Transmitter 7 Terminal board 8 Automatic answering telephone central device 9 Telephone answering device

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G08G 1/09 G06F 17/60 H04M 11/00

Claims (3)

(57) [Claims] 1. A road information providing unit, an event priority indicating the type and content of the event information, and evaluation values for calculating an event evaluation value from 2 elements Event degree indicating the degree of association with other event information It is provided by a combination of the calculating means, the evaluation value calculating means, and the evaluation value of the event occurrence point determined by the reach of the traffic flow from the information providing point.
A road information providing apparatus and a rank determining means for determining a priority for selecting an event to be subjected, the event
From the priority, the event relevance and the man-machine device
Based on the degree of information addition based on the presence or absence of input information, events
Priority is determined by calculating
Road information providing device. 2. A claim comprising: road information providing means via a telephone line; and ranking determining means for determining a final priority based on a combination of an evaluation value calculating means and an evaluation value of an event generating route determined by traffic volume. Item 2. The road information providing device according to item 1. 3. A road information providing means using a push button line, an evaluation value calculating means and a route designated by telephone (designated route), a route connected to the designated route (related route), or another engine route. 2. The road information providing apparatus according to claim 1, further comprising: a rank determining unit that determines a final priority based on a combination with the evaluation value of the event occurrence route.