JP2000194984A - Number of guided vehicles control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a number of guided vehicles control system capable of avoiding a hunting phenomenon and providing with many vehicles information without expanding communication facilities and without restricting the number of users. SOLUTION: A number of guided vehicles controller 42 is constituted of a group information storage part 42a, a road information storage part 42b, a vehicle density calculating part 42c, a guidance ratio estimating part 42d, a control part 42e. acquires road traffic information from a traffic information center 43 via a cable link 43a, estimates vehicle density by the vehicle density calculating part 42c, calculates the number of guidable vehicles for every route by the vehicle density and the traffic capacity stored in the road information storage part 42b and determines optimal guidance ratio. In addition, the number of running vehicles for every group is calculated by the vehicle density and the number of vehicles running in a road section belonging to individual group to be included in the group information storage part 42a. The number of vehicles by every group is combined and combination of groups approximated to the calculated guidance ratio is determined.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic distribution system which guides a vehicle to a vacant road and eliminates congestion, and more particularly to an appropriate number of vehicles for a plurality of routes according to the degree of congestion. The present invention relates to a guidance vehicle number control system for controlling the number of vehicles that receive guidance information to be provided.

[0002]

2. Description of the Related Art Conventionally, as a system for providing traffic information in a wide range, there has been a system for providing the same information by broadcast waves. However, this system selectively guides a vehicle to a plurality of routes according to the degree of congestion. It was not something to do. FIG. 8 is a block diagram showing a conventional traffic information providing system that provides the same information. In the figure, traffic information provision center 12
Receives the road traffic information held by the police or the like from the traffic information center 13 via the wired link 13a, edits it, transmits it to the FM multiplex broadcasting station 14 via the wired link 14a, Provides the received information to the running vehicle 11 via the FM multiplex radio wave 14b.

The vehicle 11 includes an information receiving unit 11a for receiving FM multiplex radio waves and the like, a computer 11b including a CPU, a RAM, a ROM, an HDD, and the like, a running position detecting unit 11c for detecting a current position of the vehicle, an LCD, and the like. It is assumed that a display unit 11d and a map information storage device 11e storing map information such as a CD-ROM are mounted.

The vehicle 11 has a plurality of GPS (global pos.) Including a GPS satellite 15 detected by a traveling position detecting unit 11c.
itioning system) to detect the GPS satellite radio wave 15b, etc., to identify the position of the vehicle, and to store the map information storage device 11e.
The distance to the destination from the map information stored in the storage device and the information received by the information receiving unit 11a are converted into travel time and the like, and a route is selected so that the travel time to the destination is minimized. Therefore, when uniform information is provided in a wide area, vehicles traveling in the area close to the vehicle 11 among vehicles other than the vehicle 11 and heading to the same destination will select almost the same route. There is a problem that the vehicles concentrate on the same selected route and cause traffic jam.

FIG. 9 is a diagram for explaining the "hunting phenomenon" when the number of vehicles making a detour using information increases. In the figure, 21α, 21β, and 21δ indicate routes, 21a to 21f indicate groups each including several road sections (road links), and 22a indicates a destination. Here, the destination 22 is passed through the route 21α.
The time required to reach a (hereinafter, travel time of the route 21α) is 13 minutes, the time required to travel through the route 21β to reach 22a (hereinafter, the travel time of the route 21β) is 10 minutes, and the route 21γ is It is assumed that the time required to travel to reach 22a (hereinafter referred to as the travel time of route 21γ) is provided as 15 minutes.

[0006] When a route that travels based on uniform information provided by the conventional information providing method is selected, the vehicles traveling in the groups 21a to 21f are placed on the route 21β having the shortest travel time. Is concentrated and congestion occurs. At this time, the vehicle density of the other routes 21α and 21γ is reduced because the flow of the vehicle is reduced. The traffic information normally provided requires a certain period of time for information collection and totaling, and therefore, information delayed by a predetermined time from the actual road condition is provided. During this delayed predetermined time, the flow of the vehicle determined by the old traffic information is maintained, and consequently a new traffic congestion state or a congested state becomes severe.

That is, in the above case, the route 21α and the route 21γ change to a quiet state, the route 21β changes to a congested state, and it takes a while until information of a new state generated by the change is collected and counted. During that time, the change to a quiet state or a congested state progresses further. Thereafter, new traffic information (for example, the route 21
When the travel time of α is 10 minutes, the travel time of route 21β is 16 minutes, and the travel time of route 21γ is 12 minutes) and provided, the congestion state of route 21β changes in a direction to be alleviated. The route 21α with the shortest travel time is selected, the vehicles concentrate again on the route 21α with the shortest travel time, and the other routes 21β and 21γ become idle.

As described above, when the number of vehicles making a detour using the traffic information increases, the route change behavior of the vehicles becomes extremely violent, and congestion occurs due to a sudden increase in the inflow of vehicles, and conversely, the inflow of vehicles decreases. A phenomenon occurs in which the idle state is alternately repeated. This phenomenon is called a hunting phenomenon. Since the traffic volume is proportional to the passing speed of each route and the number of vehicles, when the hunting phenomenon occurs, the traffic volume of the entire road network is decreased rather than increased by providing the traffic information.

FIG. 10 is a block diagram of an information providing system using one-to-one communication (mobile phone) to avoid the hunting phenomenon. The information providing system provides the vehicle position and vehicle destination specified by the vehicle 31 by the GPS method to the traffic guidance center 32 via the mobile phone 37, the mobile phone radio wave 35b, the mobile phone base station 35, and the network 34. And
The traffic guidance center 32 converts the traffic information obtained from the traffic information center 33 via the wired link 33a into travel time and calculates a route that minimizes the travel time to the destination requested by the user. Then, the calculation result is transmitted to the mobile phone 37 and the modem 3 in the vehicle 31 via the network 34, the mobile phone base station 35, and the mobile phone radio wave 35a.
8 to the computer 31b as route information.

In this case, even when a plurality of vehicles are guided in the same direction, the same information must be calculated for each vehicle and the calculation result must be provided to each vehicle. In addition, in order to change the route while adding traffic information to the real evening, it is necessary to frequently communicate with mobile phones, so congestion will increase, and communication facilities will be significantly expanded with the increase of information users Or limit the number of users to a small number.

[0011]

As described above, in the system shown in FIG. 1 which provides the same traffic information over a wide area, vehicles having substantially the same starting point and destination are concentrated on the same relatively vacant route. However, there is a problem that a hunting phenomenon occurs that causes a new traffic jam. Further, in the method of FIG. 3 using one-to-one two-way communication so as not to cause a hunting phenomenon, it is necessary to frequently transmit and receive route guidance information using a mobile phone. Or it was necessary to limit the number of users to a small number. SUMMARY OF THE INVENTION An object of the present invention is to provide a guidance vehicle number control system capable of providing appropriate information to a large number of vehicles while avoiding a hunting phenomenon, without expanding communication facilities and without limiting the number of users. It is to be.

[0012]

SUMMARY OF THE INVENTION The guidance vehicle number control system of the present invention uses broadcast waves to provide route selection information so that information can be provided to many vehicles without limiting the number of users. In addition, to avoid hunting phenomena, calculate the vehicle density based on traffic information obtained from traffic information centers and compare it with traffic capacity considering road information such as the number of lanes, width, slope etc. The number of detourable vehicles that does not cause traffic congestion is calculated, and guidance is performed according to an optimal guidance ratio to a plurality of routes. Further, in order to realize an optimal guidance ratio, vehicles to be guided are grouped based on the vehicle density and the guidance ratio, and the number of vehicles receiving the same information is optimally controlled.

The generation of the information used to calculate the route to be selected by each vehicle is performed by using a mobile phone or a vehicle from each vehicle.
Driving position and destination information collected and transmitted using optical beacons and radio beacons installed on the roadside, road traffic information obtained by police and the like from vehicle detectors, and accumulated OD (Origin Destination) ) One of information, travel time information DB, etc., or a combination thereof. In addition, a broadcast wave such as a satellite digital broadcast, a terrestrial digital broadcast, or a data multiplex broadcast is used to notify information used for calculating a route to be selected by each vehicle.

[0014]

FIG. 1 is a diagram for explaining a first embodiment of the present invention. In FIG. 1, 41 is a vehicle,
42 is a guidance vehicle number control device; 43 is a traffic information center such as police; 44 is an FM broadcast station for performing FM multiplex broadcasting; 45 is a GPS satellite;
Is sent to the traffic information center 43 via the wired link 43a.
It is connected to the FM multiplex broadcasting station 44 via a wired link 44a. 44b is an FM multiplex broadcast wave transmitted from the FM multiplex broadcast station 44, and 44α, 44β, 44γ are multiplexed information for different groups.

The guidance vehicle number control unit 42 comprises a group information storage unit 42a, a road information storage unit 42b, a vehicle density calculation unit 42c, a guidance ratio estimation unit 42d, and a control unit 42e. 43a, the vehicle density is calculated by the vehicle density calculator 42c, and the estimated vehicle density and the ability of the vehicle stored in the road information storage 2b to pass per unit time (traffic capacity) ) To calculate the number of vehicles that can be guided for each route, and determine the optimal guidance ratio. Further, the vehicle density and the number of vehicles traveling on the road section belonging to each group included in the group information storage unit 42a are calculated, and the number of traveling vehicles for each group is calculated. A combination of the number of vehicles for each group is calculated to obtain a group combination close to the determined guidance ratio. It is possible to determine a route that is less likely to cause traffic congestion by the group combination obtained in this manner.

This situation will be described in more detail with reference to the drawings. FIG. 2 is a diagram for explaining an example of allocating the number of guided vehicles to a plurality of routes by blocking in the guided vehicle number control system of the present embodiment. In FIG.
51f is a group (corresponding to 21a to 21f in FIG. 2) composed of several road sections (road links), and the optimal guide ratio estimated by the guide ratio estimating unit, for example, the route in FIG. Assuming that the guidance at the ratio of 60:15:25 is optimal for the routes 51α, 51β, and 51γ corresponding to three of 21α to 21γ, the road section group 51a
The number of vehicles existing in each of the groups No. to 51f is calculated, and the combination of the groups having the vehicle number ratio closest to the guidance ratio 60:25:15 is determined.

Assuming that (51f, 51e, 51b), (5
1d), the combination of (51c, 51a) is the induction ratio
Assuming that it is determined that the vehicle number ratio is the closest to 60:25:15, the information that leads to the route 51α is, as a whole, the route 51β and the route 51β from the route 51α.
The information (for example, the information for reducing the average travel time) in which the ease of the road in the road section of γ is increased is (51f, 5).
1e, 51b) is transmitted together with information (for example, a group ID) by which a vehicle traveling on each road section group can be identified as information directed to itself.

Similarly, information that guides the vehicle to the route 51β is given to vehicles traveling on the road section group 51d, and information that guides the vehicle to the road section groups 51c and 51a is given to vehicles traveling on the road section groups 51c and 51a.
The information for guiding the vehicle to the route 51γ is transmitted by the FM multiplex broadcast radio wave 44b shown in FIG. 4 together with information for the vehicle traveling on each road section group and information that can be selected (group ID). At this time, a plurality of information, for example, 44α, 44β, and 44γ are multiplexed and transmitted as information for different groups.

The vehicle 41 has an FM multiplex broadcasting receiver ("information receiving unit" in the figure) 41a, a computer 41b, a running position detecting unit 41c, and a display unit 41 comprising an LCD and the like.
d, a map information storage device 41e such as a CD-ROM, and a group information storage unit 41f for storing group information. The FM multiplex broadcast receiver 41a receives the FM multiplex broadcast radio wave 44b from the FM multiplex broadcast station 44 via the FM multiplex broadcast reception antenna and the traveling position detection unit 41c. The traveling position detector 41c specifies the position of the vehicle based on signals 45b from a plurality of GPS satellites including the GPS satellite 45, and provides traveling position information to the computer 41b.

The computer 41b includes a CPU, a RAM,
A group to which a road section in which a vehicle travels belongs is specified based on the traveling position information and the information stored in the group information storage unit 41f, and an antenna for FM multiplex broadcast reception and an information receiving unit 4
The information for the group to which the road section in which the vehicle travels is determined from the route selection information obtained in 1a, and the route that bypasses the traffic jam is determined.

In the first embodiment shown in FIG. 1, the data in the group information storage section 42a in the guidance vehicle number control device 42 and the data in the group information storage section 41f mounted on the vehicle 41 are made identical in advance. deep. According to the present embodiment, a route is assigned to each running road section based on the number of vehicles in each road section, the degree of congestion of the path, and the like.
It is possible to suppress the occurrence of the hunting phenomenon without limiting the number of users and without expanding communication facilities.

FIG. 3 is a diagram for explaining a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the group information storage unit 42a in the guidance vehicle number control device 42 and the group information storage unit 4 mounted on the vehicle 41 are different.
The data in 1f includes a plurality of grouping information obtained by performing different groupings of the same region (hereinafter, a grouped region is referred to as a region-divided example, and a group of several different region-divided examples is referred to as a region-divided region). Divided information) is prepared in advance, and based on the vehicle density estimated by the vehicle density calculator, one of the regional division examples in which the number of vehicles in the group does not become too large is selected, and FM multiplex broadcasting is performed. The station 44 provides an identification code of an example of area division to be used via the FM multiplex broadcast radio wave 44b.

As a specific example, for example, in the data 44α of the FM multiplex broadcast wave 44b, an identification code indicating that the data 44α is transmitting group information, and the grouping information to be used include an area division example. 1 and the data 44β include the identification code of the group 1 and the information for the group 1 and the data 4β.
In 4γ, it is assumed that the identification code of group 2 and the information for group 2 are multiplexed and transmitted.

At this time, the vehicle 41 traveling on the route 45f has the data 44α transmitting the group information,
It is determined that the grouping information to be referred to at present indicates the regional division example 1, and thereafter, as in the first embodiment, the group information storage unit 41f stores the traveling position of the own vehicle.
The group (group 1) to which the own vehicle belongs is determined with reference to the regional division example 1 in the regional division information included in the information, and the information for the own vehicle (that is, the identification code of the group 1 and the data for the group 1) 44β) is obtained. According to the present embodiment, a plurality of regional division examples are prepared in advance as group information, and one of them is selected, so that control is greatly simplified as compared with the first embodiment. You.

FIG. 4 is a diagram for explaining a third embodiment of the present invention. In the third embodiment, the group information is created in accordance with the traffic conditions, and the created group information is periodically transferred to the group information storage unit 41f of the vehicle 41 via the FM multiplex broadcast. Information can be dynamically updated.

For example, as shown in FIG. 4, in the data 44α of the FM multiplex broadcast radio wave 44b, the created group format is group 1 (71a, 71b, 71i, 71).
g), group 2 (71c, 71d, 71e, 71)
f), while transmitting that it is group 3 (71h, 71j, 71k), the data 44β contains the identification code of group 1 and the information for group 1, the data 44γ contains the identification code of group 2 and the information for group 2,
It is assumed that the vehicle 41 is provided to the vehicle 41 that travels 71d.

At this time, the vehicle 41 acquires the data 44α and saves it in the group information storage section 41f, and then determines that the vehicle 41 belongs to the group 1 from 71d where the own vehicle position exists, as in the first and second embodiments. Then, information for the own vehicle included in the data 44β (that is, the identification code of the group 1 and the data 44β for the group 1) is obtained. According to this embodiment, the group information can be dynamically updated according to the traffic situation.

FIG. 5 is a block diagram for explaining a fourth embodiment of the present invention. In the present embodiment, in addition to the functions described in the first embodiment (see FIG. 1), the guidance vehicle number control device 42 includes an encryption device 86 for encrypting information and a vehicle 4.
The transmission information from the mobile phone 83 and the mobile phone base station 8
2. While receiving via the communication network 81,
A vehicle management device 85 is provided for predicting the travel distance of the vehicle and managing the position information and which vehicle uses a code (key) for restoring which encrypted information.

The guidance vehicle number control device 42 in this embodiment.
The vehicle multiplexes a plurality of data (data 87α, data 87β, data 87γ) as information that can be restored with different codes (α, β, γ) via the FM multiplex broadcasting station 44 and the FM multiplex radio wave 44b. 41.

The vehicle 41 transmits the vehicle position information and the destination information to the guidance vehicle number control device 42 via the mobile phone 83, the mobile phone base station 82, and the communication network 81.
The guidance vehicle number control device 42 registers the received vehicle position information and destination information. At this time, the guidance vehicle number control device 4
2 drives around the vehicle position and controls the number of guided vehicles 42
In consideration of the number of vehicles for each destination and the number of vehicles for each code currently used, the codes required for decoding are written to the communication network 81, the mobile phone base station 82, and the mobile phone 83.
To provide through.

When the number of guided vehicles increases,
For reassignment of information necessary for decoding by broadcast waves,
A reconnection request is issued to access the guidance vehicle number control device 42 by the mobile phone 83. At this time, the reconnection request is
Only vehicles in a specific group that have been able to restore the information because they are encrypted will receive it, and congestion will be less likely to occur. The vehicle 41 that has received the reconnection request changes the information necessary for decoding the information, and transmits new vehicle position information and destination information to the number of guided vehicles via the mobile phone 83, the mobile phone base station 82, and the communication network 81. It is transmitted to the control device 42.
The guidance vehicle number control device 42 registers the received new vehicle position information (to which information necessary for decoding information has been reallocated) and destination information.

For example, in FIG. 5, a code α is required to restore data 87α, and similarly, data 87β
Requires a code β to restore the data 87γ and a code γ to restore the data 87γ. And the vehicle 41
Is assumed to use the code α and to restore and use the data 87α. The number-of-guided-vehicles control device 42 indicates that the number of vehicles using the code α is locally offset, or
If it is determined that the number of vehicles has become too large, the number-of-guided-vehicles control device 42 incorporates an access request to the number-of-guided-vehicles control device 42 for stopping use of the code α and reassigning the code to a part of the data 87α. , Encrypted and sent.

In this case, the vehicle that accesses the mobile phone base station 82 is only the vehicle obtained by restoring the data 87α with the code α, and the information exchanged using the mobile phone is small. Congestion is less likely to occur than when information is provided using one-to-one communication. The vehicle 41 that has received the access request to the guidance vehicle number control device 42 for stopping the use of the code α and reassigning the code is a mobile phone 83, a mobile phone base station 82, and the communication network 8
1 to access the number-of-guided-vehicles control device 42 to receive code reassignment. By using the present embodiment, there is an advantage that congestion is less likely to occur due to the guidance vehicle control device controlling the calling of the vehicle, and further, destination information (OD information) of the vehicle can be collected.

FIG. 6 is a flowchart for explaining the operation of the fourth embodiment shown in FIG. As shown in the drawing, the vehicle 41 that intends to use the information for bypassing the traffic jam transmits the own vehicle position, speed, destination information, and the like to the guidance vehicle number control device 42 by using the mobile phone 83. , An information use request is made (step a). The guidance vehicle number control device 42 classifies the vehicle according to the vehicle position and the destination, registers the vehicle in a suitable group (step b), and sends a code for restoring information to be transmitted, which is allocated to the group. (Step c). Here, the group refers to a group of guided vehicles, in which the number of vehicles in the group is controlled by referring to the group information in the same device so that the vehicles are not biased to a specific group and a new traffic jam is not caused by the guidance information. It is assumed that

Using the FM multiplex broadcasting station 44, the guidance vehicle number control unit 42 transmits the route selection information encrypted for each group (step d). The vehicle 41 restores the encrypted route selection information received via the FM multiplex broadcasting station 44 using a code for restoring the information received from the guidance vehicle number control device 42, and performs route selection. (Step e).

It is difficult to control the number of vehicles in the above-mentioned group due to the route selection of the vehicles and the increase in the number of new information use requesting vehicles. 42 issues a request to review the assignment of codes (α, β, γ) for restoring information,
Via the FM multiplex broadcasting station 44, the information for the group in which the transmitting vehicle is biased is transmitted including a code update request signal for information restoration in order to dissolve the group and perform reassignment (step f). , G). The vehicles belonging to the group in which the vehicles are biased return to step a again, and
An information use request (own vehicle position, speed, destination information, etc.) is transmitted to the guidance vehicle number control device 42, and a code for restoring the information is obtained again to use the information as a new group. In the present embodiment, the guidance vehicle number control device 42 issues an instruction to the vehicle 41 to change the group,
The guidance vehicle number control device can manage the vehicle call opportunity, reducing unnecessary calls from the vehicle. As a result, while collecting speed information and OD information from the vehicle, traffic flow distribution that is less likely to cause congestion A system can be built.

FIG. 7 is a diagram for explaining a fifth embodiment of the present invention. The fifth embodiment differs from the fourth embodiment in that a frequency dedicated to group information is prepared,
All vehicles are capable of changing groups dynamically by broadcast waves, rather than by one-to-one communication by mobile phones or the like. Here, F at different frequencies X, Y, and Z
Information is provided from the M multiplex broadcasting station 44 and 10Xα to 10
Xγ is provided with group information for all vehicles at the frequency X, and the condition of the group using the frequency Y in the data 10Xα (running link number, unique ID of the vehicle or the device mounted on the vehicle, etc.) ), And the data 10Xβ similarly provides the condition of the group using the frequency Z.

The vehicle 41 always receives two frequencies including the frequency X. At the frequency X, when the group information is updated, the group information storage unit 41f is rewritten.
Judgment of the group to which the own vehicle belongs enables dynamic change of the group. The other reception channel is changed to a frequency including the information for the own group, and the information for the own vehicle is used.

More specifically, the FM multiplex broadcasting station 44 determines that, for example, at the frequency X, the identification code indicating that 10Xα provides the group condition using the frequency Y and the group y1 = (links 71f, 71g, 71b ), Group y2 = (71a, 71c),.
0Xβ is an identification code and a group condition indicating that a group condition using the frequency Z is provided, and a group z1
= (Links 71d, 71e, 71h) and the like.

At the frequency Y, the identification code of the group y1 and the information for the group y1, the group y2
, Etc., and at the frequency Z, the identification code of the group z1 and the information for the group z1, the identification code of the group z2 and the information for the group z2, and the like are provided. At this time, assuming that the vehicle 41 is traveling on the road section 71h, for example, as in the first to fourth embodiments, the own vehicle position is detected, and the information for the own vehicle is changed to the frequency Z from the frequency X dedicated to group information. It is determined that the information of the group z1 is used.

The present invention is not limited to the embodiment described with reference to FIGS. 1 to 7, and can be variously modified without departing from the gist thereof. For example, in the above example, the guidance vehicle number control device shows an example in the case of passing through FM multiplex broadcasting. However, in the present invention, the media for providing the route selection information may be of a broadcasting type. Digital broadcasting using satellites, digital broadcasting using terrestrial waves, or wireless packet communication, pager broadcasting, television data multiplex broadcasting using the vertical retrace interval of TV, etc. can be used, and the same effect can be obtained. Can be obtained. Further, in the fifth embodiment, it is also possible to realize by combining the above-mentioned broadcast-type media. In addition, the vehicle position detecting means also assigns an independent code that can be used as a place identifier to the road or the roadside, detects the code, and determines the position by referring to a correspondence table between the code and the position information. It is feasible.

Similarly, the destination information and the data transmission of the traveling position of the own vehicle to the guidance vehicle number control device can be realized not only by the mobile phone and the roadside beacon but also by using wireless packet communication. The transmission data from the guidance vehicle number control device is not limited to the estimated travel time information but may be any data that can calculate a route selection cost required for route selection by a computer mounted on the vehicle. The present invention can also be realized by an estimated vehicle density that can represent the degree of congestion in a section, an estimated vehicle separation rate in consideration of the current traffic situation and a signal control method, and the like.

The vehicle density calculated using the traffic information as an input may be a value obtained by estimating the number of vehicles that exist on average within a unit distance in the direction of extension of the road. This can also be achieved with traffic density and occupancy described in the National Science Corporation. Further, in the example of encryption in FIG. 5, a spread spectrum method is used as a broadcast type information providing device, and a spread code is provided as information necessary for decoding provided from the guidance vehicle number control device side when a vehicle is accessed. , The same effect can be obtained.

[0044]

According to the present invention, a guided vehicle number control system capable of avoiding the hunting phenomenon and providing information to a large number of vehicles without extending communication equipment and without limiting the number of users is realized. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the guided vehicle number control system according to the present invention;

FIG. 2 is an example of allocating the number of guided vehicles to a plurality of routes by blocking the guided vehicle number control system in FIG. 1 according to the present invention.

FIG. 3 is a block diagram showing a second embodiment of the guided vehicle number control system according to the present invention;

FIG. 4 is a block diagram showing a third embodiment according to the present invention of the guided vehicle number control system of the present invention.

FIG. 5 is a block diagram showing a fourth embodiment of the guided vehicle number control system according to the present invention;

FIG. 6 is a flowchart illustrating an example of a processing operation of the information providing device, the vehicle, and the guided vehicle number limiting device in FIG. 8;

FIG. 7 is a block diagram showing a fifth embodiment of the guided vehicle number control system according to the present invention;

FIG. 8 is a block diagram showing a configuration example of a conventional system for providing the same information by broadcast waves.

FIG. 9 is an explanatory diagram showing a process of generating a hunting phenomenon by providing the same information using a conventional broadcast wave.

FIG. 10 is a block diagram showing an example of traffic flow distribution using a combination of a conventional mobile phone one-to-one communication and a vehicle-mounted device.

[Explanation of symbols]

11: vehicle, 11a: information receiving unit, 11b: computer, 11c: traveling position detecting unit, 11d: display unit, 11e: map information storage device, 12: traffic information providing device, 13: traffic information device, 13a: Wired link, 14: FM multiplex broadcasting station, 14a: Wired link, 15: GPS satellite, 15b: GPS radio wave, 21a to 21f: Group (as a set of road links), 21α to 21γ: Route, 31: Vehicle, 31a : Information receiving unit, 31b: computer, 31c: GPS receiving antenna and traveling position detecting unit, 31d: display unit, 31e: map information storage device, 32: traffic guidance sensor, 33: traffic information sensor, 33a: wired link , 34: communication network, 35: mobile phone base station, 35a: base station transmission radio wave, 35b: mobile phone Transmitting radio wave, 36: GPS satellite, 36a: GPS satellite radio wave, 41: vehicle, 41a: information receiving unit, 41b: computer, 41c: GPS receiving antenna and traveling position detecting unit, 41d: display unit, 41e: map information storage device 41f: group information storage unit, 42: guidance vehicle number control device, 42a: group information storage unit, 42b: road information storage unit, 42c: vehicle density calculation unit, 42d: guidance ratio estimation unit, 42e: control unit, 42f : Vehicle management unit, 43: Traffic information center, 43a: Wired link, 44: FM multiplex broadcasting station, 44a: Wired link, 44b: FM multiplex broadcasting radio wave, 44α-44γ: Data multiplexed by multiplex radio wave, 45 : GPS satellite, 45a: GPS satellite radio wave, 71a to 71k: road link, 81: communication network, 82 : Mobile phone base station, 82b: base station transmission radio wave, 82b: mobile phone transmission radio wave, 83: mobile phone, 84: modem, 85: vehicle management unit, 86: encryption device, 87α-87γ: encrypted and multiplexed 10Xα to 10Xγ: data provided at frequency X by FM multiplex broadcasting, 10Yα to 10Yγ: data provided at frequency Y by FM multiplex broadcasting, 10Zα to 10Zγ: provided at frequency Z by FM multiplex broadcasting data.

Continuing from the front page (72) Inventor Nobuaki Sugiura 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Japan Telegraph and Telephone Corporation (72) Inventor Toru Kishimoto 3-192-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Telephone Co., Ltd. F-term (reference) 5H180 AA01 BB04 BB05 BB13 CC12 DD01 DD04 EE03 EE18 FF05 FF12 FF13 FF27 FF33 5K048 BA27 BA42 CA07 DB01 DB02 DC01 HA01 HA02 5K067 AA21 AA41 BB36 EE02 EE12 FF03 JJ23 FF56 JJ

Claims (8)

[Claims] 1. A guided vehicle that distributes route selection information for guiding a vehicle to one of a plurality of roads to a group of an appropriate number of vehicles and notifies a vehicle traveling on the road via communication means. In the guidance vehicle number control system having a number control device, the guidance vehicle number control device includes a road information storage unit that stores road-specific information, and road-specific information and road congestion stored in the road information storage unit. Enter the information indicating the degree,
A vehicle density calculating means for calculating a vehicle density for estimating the number of vehicles existing in an arbitrary section on the road; and inputting the vehicle density calculated by the calculating means and information described in the road information storage means. Estimating means for estimating the number of navigable vehicles within a range that does not worsen traffic congestion, estimating a guidance ratio indicating a ratio of vehicles guided to each road, and estimating the vehicle density calculated by the calculating means and the estimating means. By dividing the vehicles into a plurality of groups so that the number of vehicles provided with each of a plurality of route selection information for guiding to a plurality of different roads is optimized based on the calculated guidance ratio, the same route is provided. Control means for controlling the number of vehicles receiving the selection information and sending the route selection information to the communication means, wherein the vehicle receives the route selection information via the communication means Means, own vehicle position specifying means for specifying the own vehicle position, specifying means for specifying one of the groups grouped by the control means, and information selecting means for selecting group-oriented information by the specifying means A control system for the number of guided vehicles, comprising: 2. The guidance vehicle number control device and the vehicle are capable of specifying a group to which a certain road section and a set of the road sections belong as a group and inputting an arbitrary road section as a group. The vehicle has group information storage means for storing a plurality of group information, and the vehicle specifies its own vehicle position, specifies its own group from the position information and the group information storage means, and selects information for its own group. The guidance vehicle number control device estimates the number of vehicles existing in the divided road sections belonging to the same group based on the vehicle density calculated by the calculation device, and 2. The guidance vehicle number control system according to claim 1, wherein the number of guidance vehicles is controlled by changing the number of groups provided in units and providing the same information. 3. The guidance vehicle number control device estimates the number of vehicles existing in a plurality of road sections from the plurality of group information by the calculation means, and determines an appropriate group based on the estimated number of vehicles. Information and a road section to be provided are determined, and a notifying unit for notifying a vehicle of group information to be used by the communication unit is provided. The vehicle includes a unit for receiving the group information controlled by the guidance vehicle number control device. 3. The guidance vehicle number control system according to claim 2, wherein each vehicle uses only information for the own vehicle. 4. The vehicle according to claim 1, further comprising means for transmitting information capable of discriminating the position of the vehicle and the vehicle, and encrypting, encoding, or spreading based on group information controlled by the guidance vehicle number control device. Means for restoring coded information, the guidance vehicle number control device comprising: means for receiving information from a vehicle; means for encrypting, encoding, or spreading route selection information; A means for transmitting information necessary for restoring or despreading information, and providing a vehicle with information necessary for restoring or despreading route selection information according to the degree of traffic congestion; The number control system according to claim 1, wherein the number is controlled. 5. Providing information for restoring or despreading the encrypted, coded, or spread information,
5. The guidance vehicle number control system according to claim 4, wherein the control is performed via a mobile phone, an optical beacon, a radio beacon, or a commercial radio. 6. The communication means provides route selection information from a plurality of frequencies or a plurality of broadcasting stations, and the vehicle transmits a vehicle position and vehicle identification information, and determines whether or not to make a detour. Receiving means for receiving information for judging the frequency, and frequency information receiving means for receiving frequency information used by the receiving means, wherein the guidance vehicle number control device transmits the frequency to be used or the station information. The guidance vehicle number control system according to claim 1, further comprising means for controlling the number of vehicles using the same frequency according to the degree of congestion. 7. A means for transmitting own vehicle position and vehicle identification information in the vehicle and a means for receiving frequency information used for information acquisition, or a means for transmitting frequency information used in the guidance vehicle number control device. ,mobile phone,
7. The guidance vehicle number control system according to claim 6, wherein the system is an optical beacon, a radio beacon, or a business radio. 8. The communication means includes a satellite digital broadcast,
8. The method according to claim 1, wherein said route selection information is sequentially broadcast by digital terrestrial broadcasting, digital terrestrial broadcasting, or data multiplex broadcasting.
The guidance vehicle number control system according to the paragraph.