JP3229221B2 - Vehicle information collection method and 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 vehicle information collection system for realizing a system for collectively collecting and managing the positions and dynamics of a plurality of vehicles by wireless communication in order to efficiently allocate taxis, for example. Method and apparatus.

[0002]

2. Description of the Related Art In order to efficiently distribute taxis, it is important to accurately grasp and manage the current positions of a plurality of vehicles. In recent years, GPS devices and the like that perform positioning by receiving radio waves from multiple artificial satellites have been installed in vehicles,
It has become possible to accurately detect the position of a moving vehicle. If such a vehicle position detection device is combined with wireless data communication, it becomes possible to collectively collect the positions and dynamics of a plurality of vehicles at a center by wireless communication and manage the vehicles.

FIG. 9 shows the detection of the position of a vehicle such as a GPS,
1 shows a basic concept of a vehicle management system including collection of vehicle information by wireless data communication. Radio waves of a frequency band assigned in advance are used for wireless communication. Since the data transmission speed and the data processing speed are finite, the wireless channel capacity is limited. For this reason, when a vehicle moves a certain distance or after a certain period of time without moving, arbitrary transmission data such as vehicle position information or dynamic data including a distinction between a real vehicle and an empty vehicle in a taxi or the like is transmitted to the base station. Make a call to. For example, once a vehicle at vehicle position 1 transmits dynamic data, if the vehicle is moving, the next dynamic data is transmitted at vehicle position 2 that has moved a specified distance, and further at vehicle position 3 that has moved a specified distance. Send the following dynamic data. If the set predetermined time elapses before the vehicle stops or the traveling speed decreases and the vehicle travels the specified distance, the next dynamic data is transmitted at the vehicle position 4.
Such distance conditions and time conditions are set on the base station side,
Notify the vehicle by broadcast transmission. The distance condition is, for example, 1
It can be varied from 00 to 3100 m and the time lapse can be set to 2 minutes, 5 minutes, 10 minutes or none.

The amount of traffic is limited by the data capacity of the wireless line, and the frequency of wireless data communication with a vehicle cannot be increased so much. If the traffic volume is excessive, call loss due to interference increases, and the amount of data that can be processed decreases. Conversely, if the frequency of wireless data communication is low, although there is room in the traffic volume of the wireless line, the accuracy of the information on the vehicle position is reduced, and the wireless line cannot be used effectively. For this reason, the base station changes the arbitrary transmission conditions by setting the distance conditions and the time lapse according to the traffic volume of the radio line, suppresses the call loss due to interference to a certain level or less, and aims at efficient utilization for the radio line. I have.

[0005]

In the vehicle information management system as shown in FIG. 9, the transmission condition of arbitrary transmission data is adjusted in the whole system according to the traffic volume of the radio line, and the call loss due to interference is reduced to a certain level. We are trying to keep it below. Such a management concept focuses on the maximum effective use of the wireless line, and does not always sufficiently deal with the demand state of the vehicle. In general, the amount of data to be managed increases when the demand for vehicles is busy, and the amount of data decreases when the demand is low. Therefore, there is a contradiction that the accuracy of position grasping decreases when the demand is high and the accuracy increases when the demand is low.

[0006] The demand for vehicles such as taxis is large in a specific area such as a center in an urban area, and is small in other areas such as a suburb. In a system in which the arbitrary transmission conditions are changed uniformly in the entire system, it is not possible to collect information according to the necessity of each region.

An object of the present invention is to provide a vehicle information collecting method and apparatus which can effectively use a wireless line and can collect information according to the needs of each area.

[0008]

SUMMARY OF THE INVENTION The present invention is a method for collecting vehicle information including vehicle positions from a plurality of vehicles by wireless data communication between a base and each of the vehicles. Then, the frequency at which wireless data communication should be performed for each region is set, each vehicle identifies the region to which the vehicle position belongs, and the vehicle information for the base at the frequency set for the identified region. In the vehicle information collection method for performing wireless data communication, the frequency set for each area is adjusted to be higher than that of another area for an area selected in accordance with a predetermined standard. Is a vehicle information collection method characterized in that the traffic amount is adjusted so as to be approximately a predetermined capacity of a wireless line. According to the present invention, the frequency at which wireless data communication is to be performed is set for a plurality of designated areas. Each vehicle performs wireless data communication on vehicle information with respect to the base at a frequency set for the area to which the vehicle position belongs. The frequency set for a plurality of regions is made larger for the region selected according to a predetermined criterion than for the other regions, but is adjusted so that the total traffic volume becomes approximately the predetermined capacity of the radio line. Therefore, appropriate vehicle information can be collected by efficiently using the wireless line. For example, in a particular area, such as a city center,
The frequency at which wireless data communication should be performed is set higher in an area where it is desired to know high-precision position information than in a suburban area where the amount of vehicle movement is large and coarse-accuracy position information is acceptable. The frequency can be set based on a linear moving distance of the vehicle on a map, an accumulated value of the traveling distance of the vehicle, a lapse of time, or the like. The frequency increases when the distance or the time is shortened, and the frequency decreases when the distance or the time is increased. By increasing the frequency in a specific area and decreasing the frequency in other areas, it is possible to collect highly accurate information according to the needs of each area while suppressing the data amount of the entire wireless line.

Further, in the present invention, the adjustment so as to have the substantially predetermined capacity is performed at predetermined time intervals. According to the present invention, effective adjustment can be performed every predetermined time. Further, in the present invention, the adjustment to obtain the substantially predetermined capacity is performed by changing conditions other than the selected area. According to the present invention, wireless data communication can be continued at a frequency set to a large value in a selected area.

[0010] Further, in the present invention, the selection is performed based on a schedule preset for the frequency and the application area according to the time zone of the day. According to the present invention, by setting a schedule in advance according to the time zone of the day for the frequency and application area of the wireless data communication, the change in the day time zone is larger than the daily change. Appropriate vehicle information collection can be performed according to such a concentrated state of the vehicle. For example, in the case of business vehicles such as taxis, the number of operating vehicles and the area where vehicles are concentrated differ depending on the time zone, but by predicting the pattern in advance and specifying the area and setting the frequency, it is possible to It is possible to perform high precision and control the entire traffic volume.

Further, in the present invention, the selection is made based on the concentration state of the vehicle. According to the present invention, the frequency for the area is set based on the concentration state of the vehicles, so that the vehicle position can be grasped with high accuracy in the area where the vehicles are concentrated. The concentration state of the vehicles can be determined by, for example, counting the number of vehicles per unit area and determining an area where a certain number of vehicles or more exist as a concentration area. In such a concentrated area, the distance condition is shortened to improve the accuracy of vehicle position grasp, the frequency is reduced in an area different from the concentrated area, and the condition that the traffic volume of the entire wireless line is less than a certain level is satisfied. do it.

Further, in the present invention, the selection is made based on a demand state of the vehicle. According to the present invention, it is possible to select a region where the frequency is increased based on the demand state of the vehicle. For example, in the case of taxi dispatch, the order receiving area is often concentrated, but if the frequency of wireless communication in the concentrated area is increased, the accuracy of vehicle location can be improved and the customer can easily find the nearest vehicle. it can. The order concentration area can be determined in real time by counting orders from customers or statistically based on past results.

Further, the present invention is an apparatus for collecting vehicle information including vehicle positions from a plurality of vehicles by wireless data communication between the base and each vehicle, provided at the base.
Frequency setting means for designating the frequency of performing wireless data communication by designating a plurality of areas, position detecting means mounted on each vehicle and detecting a vehicle position, mounted on each vehicle, and detected by the position detecting means Area identification means for identifying an area to which the vehicle position belongs, and wireless data communication for vehicle information at a frequency set by the frequency setting means for the area mounted on each vehicle and identified by the area identification means. And a radio communication means for performing the communication between the vehicle and the vehicle, wherein the frequency set for each of the regions is adjusted so that the region selected according to a predetermined criterion is higher than the other regions. And a frequency information adjusting device that adjusts the frequency so that the traffic amount becomes substantially a predetermined capacity of the wireless line. According to the present invention, as a device for transmitting vehicle information including a vehicle position from a plurality of vehicles to a base by wireless data communication and collecting vehicle information at the base, a frequency setting means provided in the base and mounted on each vehicle Position detecting means, area identifying means, and wireless communication means.
The frequency setting means sets a frequency of performing wireless data communication by designating a plurality of regions. The position detecting means detects a vehicle position of each mounted vehicle. The area identifying means identifies an area to which the vehicle position detected by the position detecting means belongs. The wireless communication means performs wireless data communication about vehicle information with the base at a frequency set by the frequency setting means for the area identified by the area identification means. The frequency setting means sets the frequency according to the necessity of each region and adjusts the traffic volume of the entire wireless line to be approximately the predetermined capacity of the wireless line, thereby effectively utilizing the data amount of the entire wireless line. As a result, information can be collected according to the needs of each region.

[0014]

FIG. 1 shows a schematic configuration of an embodiment of the present invention. FIG. 1A shows the entire system configuration, and FIG. 1B shows an example of a designated state of a region. FIG.
As shown in (a), the base station 10 includes a plurality of vehicles 11,
Information about the current position of the base station 12, 13, or 14, or dynamic data indicating whether the vehicle is in an actual vehicle or an empty vehicle in the case of a taxi is used as arbitrary transmission data as the base station 10.
Receive what you sent to The base station 10 that has received the arbitrary transmission data transmits acknowledgment (hereinafter abbreviated as “ACK”) data for confirming that the arbitrary transmission data from the vehicles 11 to 14 has been received. Optional transmission parameters indicating conditions for transmitting arbitrary transmission data from the vehicles 11 to 14 are also incorporated in the ACK data. The optional transmission parameters include not only ACK data but also the base station 1
It is included as a part of all data transmitted from 0. When each of the vehicles 11 to 14 receives the arbitrary transmission parameter, it takes it in as broadcast data and handles it as an overall condition for specifying the frequency at which wireless data communication is to be performed in other areas except the specified area. From the base station 10, a specific area is designated as an arbitrary transmission condition for each area, and a regional condition representing the transmission condition of arbitrary transmission data in that area is transmitted to all the vehicles 11 to 14 as broadcast data. Is done.

The base station 10 transmits, for example, an antenna 17 for transmitting and receiving a radio wave in a microwave band via the antenna 17, and processes the radio wave received by the antenna 17 as an electric signal. A wireless device 18;
A communication control unit (hereinafter abbreviated as “CCU”) 19 and a communication / vehicle management server 20 are included. The communication / vehicle management server 20 has basically the same configuration as a personal computer or a workstation. A processing unit 21 including a central processing unit (abbreviated as “CPU”) performs display by the display unit 23 in accordance with an instruction or data input from an input unit 22 such as a keyboard, or performs recording on the recording medium 2.
4 to read out a program or data recorded in advance or record data. As the display means 23, for example, a cathode ray tube (abbreviation "CRT"), a liquid crystal display device (abbreviation "LCD"), or the like is used. Recording medium 24
For example, a floppy disk (abbreviation "F
D "), a magnetic tape, a magneto-optical disk, or the like. The processing unit 21 collects vehicle information using the memory 25 and the timer 26 according to the program stored in the recording medium 24, and performs information processing for vehicle management. To count traffic volume,
A counter 27 is used.

The designation of an area as shown in FIG. 1B can be set, for example, as a rectangular area indicated by the coordinates of the latitude and longitude of the upper and lower diagonal points. In the area, 300 m is set as a distance condition in a rectangular area between the diagonal points (X1, Y1) and (X2, Y2). The region is
In a rectangular area determined by the diagonal points (X3, Y3) and (X4, Y4), the distance condition is set to 400 m. Areas are diagonal points (X5, Y5) and (X6, Y6)
And the distance condition is set as 200 m. The distance is a rectangular area determined by the diagonal points (X7, Y7) and (X8, Y8), and the distance condition is set as 300 m. The area is a diagonal point (X
9, Y9) and (X10, Y10) in a rectangular area, and the distance condition is set to 300 m. Outside the designated area, the distance condition is set to, for example, 700 m and the elapsed time is set to 10 minutes. In the region to the region, the condition of time lapse is not set. Therefore, wireless data communication is performed in the same area other than the designated area in the same elapsed time of 10 minutes in the area to the area. Although an overlapping portion occurs between the region and the region, the condition of the region having a shorter distance condition is prioritized in this portion. The number of regions specified is determined by the purpose and capacity of the system. The designation of the area can also be performed using the position coordinates and the radius of the center point.

FIG. 2 shows a schematic configuration of the vehicle-side device 30 mounted on each of a plurality of vehicles. Wireless data communication with the base station 10 of FIG. 1A is performed by the antenna 31 and the wireless device 32. The wireless device 32 is connected to the client device 34 via the CCU 33. The client device 34 is configured as a computer including a CPU and the like, and is also connected to a GPS positioning device 35 for detecting a vehicle position, an overall condition storage memory 36, a local condition storage memory 37, a timer 38, and the like. The general condition storage memory 36 stores conditions applied to areas other than the designated area as shown in FIG. The area condition storage memory 37 stores the coordinates of diagonal points representing the area, distance conditions, and time lapse conditions. The timer 38 measures the elapsed time. The above-mentioned CCU 33 and client device 34 are integrally formed as a signal processing unit 39 and are often a single device.

FIG. 3 shows a schematic configuration of data communicated between the antenna 17 of the base station 10 shown in FIG.

FIG. 3A shows the structure of arbitrary transmission data 40 transmitted from the vehicles 11 to 14 to the base station 10. The address 41 includes a code unique to the vehicle that is the source and a code indicating the base station 10. Vehicle information 42
Includes vehicle position and vehicle dynamics.

FIG. 3B shows ACK data 50 returned to a vehicle that has transmitted arbitrary transmission data from the base station 10.
Is shown. The address 51 indicates a vehicle whose source is the base station 10 and whose destination has transmitted the arbitrary transmission data 40. The ACK code 52 is data for the destination vehicle specified by the address 51 and is data notifying that the arbitrary transmission data 40 from the destination vehicle has been received. Further, an overall condition 53 is added to indicate transmission conditions outside the designated area. This overall condition is one of the above-mentioned arbitrary transmission parameters, and is not limited to the destination vehicle specified by the address 51, and is included in the vehicles 11 to 1 in the system configuration of the present embodiment.
All 4 are taken in as broadcast data.

In the system of this embodiment, ACK is transmitted from the base station.
When the data 50 is transmitted, regardless of the address 51,
ACK for all vehicles 11-14 in the system
The data 50 is received once. Vehicle-side device 30 of each vehicle
First determines whether the address 51 of the received ACK data 50 is addressed to each vehicle. If the destination does not match the own vehicle, the ACK code 52 is ignored, and only the overall condition 53 is fetched. When the destination coincides with the own vehicle, the ACK code and the overall condition are taken together.

FIG. 3 (c) shows the structure of arbitrary transmission conditions for each area as broadcast data transmitted from the base station 10 to all the vehicles 11 to 14. The address 61 indicates that the data is broadcast data transmitted from the base station 10, and the area condition 62 indicates the area to area designation in FIG.
It shows regional conditions including the frequency conditions such as the distance condition and the time lapse set for each region. The overall condition 63 indicates a distance condition and a time lapse outside the designated area, similarly to the overall condition 53 in FIG. 3B.

FIG. 4 shows the operation of the vehicle-side device 30 of FIG. The operation starts from step a1. In step a2, a radio signal from the base station 10 is received. In step a3, it is determined whether or not the received signals include the overall conditions 53 and 63 of FIG. 3B or 3C. If the overall condition is included, it is stored in the overall condition storage memory 36 in FIG. 2 in step a4. When the overall condition is not included in step a3, or when step a4 ends, it is determined in step a5 whether or not the local condition is included. When the local condition is included, step a
In step 6, the local condition is stored in the local condition storage memory 37.

When it is determined in step a5 that there is no local condition, or when step a6 is completed,
At 7, the vehicle position is detected. The vehicle position is the GP shown in FIG.
Not only the S positioning device 35 but also the dead reckoning navigation based on the traveling direction and the traveling distance of the vehicle, which is widely used as a navigation device, is relatively determined based on the transmission position under the previous arbitrary transmission condition. It can also be detected. In step a8, the area to which the detected vehicle position belongs is identified with reference to the area condition storage memory 37.

At step a9, it is determined whether or not the identified area is a designated area. If it is a designated area, an area condition is selected as a communication condition in step a10. If it is determined that the area is not the designated area, step a
At 11, the overall condition stored in the overall condition storage memory 36 is set as the communication condition. When step a10 or step a11 ends, it is determined in step a12 whether the selected regional condition or the overall condition is satisfied. When it is determined that the condition is not satisfied, the process returns to step a2. When it is determined that the condition is satisfied, the vehicle information is transmitted as arbitrary transmission data in step a13. In step a14, the arbitrary transmission data is transmitted to the base station 10.
Waits for reception of ACK data indicating that the data has been received. A
If no CK data has been received, step a13 is repeated. If ACK data is received, the process returns to step a2.

FIG. 5 shows the operation of the base station 10 shown in FIG. The operation is started from step b1, and in step b2, a schedule corresponding to the time zone of the day is set. In step b3, it is determined whether or not the time zone at that time has changed from the time zone in which the local optional transmission conditions were previously transmitted as broadcast data. If it is determined that the schedule has changed, the schedule is read in step b4,
Broadcast data for designating a region-specific arbitrary transmission condition is created in accordance with the schedule read in step b5.
When step b5 is completed, or when it is determined in step b3 that there is no change in the time zone, step b6
Transmits broadcast data as shown in FIG.

At step b7, it is determined whether or not vehicle information from each vehicle has been received. If it is determined that it has been received, ACK data indicating reception confirmation is transmitted in step b8, and the traffic amount is counted in step b9. When the operation in step b9 is completed, or when it is determined in step b7 that no vehicle information has been received, it is determined in step b10 whether a unit time has elapsed. When it is determined that the time has not elapsed, the process returns to step b7. When, for example, one minute elapses as a unit time, the traffic amount is evaluated in step b11. In step b12, the traffic amount is compared with the capacity of the wireless line to determine whether or not it is necessary to adjust the frequency for the area. If the traffic volume is, for example, about 80% of the capacity of the wireless line, the frequency adjustment is not particularly necessary, and the process returns to step b3. When it is determined that the frequency needs to be adjusted, the frequency is adjusted in step b13.

As the frequency adjustment, for example, as shown in FIG.
Change the distance condition outside the designated area shown in. When the traffic volume is large, the distance condition in areas other than the designated area is set long, and when the traffic volume is small, the distance condition is set short. It is also possible to change the distance conditions in the designated area. Upon completion of the frequency adjustment, the process returns to step b3.

FIG. 6 shows a concept for performing automatic control of the distance condition in order to realize the shortest distance condition while maintaining the wireless traffic under the optimum condition. The distance condition in the area other than the designated area shown in FIG.
Up to m, it can be changed in units of 100 m. Based on the results of the number of data received per minute, the distance condition for maintaining the number of received data at a constant level is reviewed every minute, and if necessary, the distance condition is automatically controlled. be able to.

FIG. 7 shows another embodiment of the present invention.
An operation of increasing the frequency of wireless data communication in an area where vehicles are concentrated will be described. The operation is started from step c1, and in step c2, the traffic amount for each designated area is evaluated.
In step c3, it is determined whether the number of vehicles per unit area is equal to or greater than a certain number. When the condition is satisfied, the distance condition to the designated area is reduced in step c4. When step c4 ends, or when it is determined in step c3 that the condition is not satisfied, the operation ends in step c5. If the overall traffic volume exceeds a certain range as a result of shortening the distance conditions for a specific designated area, extend the distance conditions in other designated areas or areas other than the designated areas to extend the wireless data communication Adjust to reduce frequency.

FIG. 8 shows the operation of still another embodiment of the present invention. In the present embodiment, when the order receiving area is concentrated in the case of a taxi or the like, the order is performed in order to improve the accuracy of grasping the vehicle position in the concentrated area and to easily grasp the vehicle closest to the customer. The operation is started from step d1, and in step d2, the initial setting of the designated area and the data communication frequency is performed. In step d3, it is determined whether there is an area where orders are concentrated. If it is determined that there is, in step d4, the distribution of the frequency to the region is adjusted, and the distribution is adjusted so that the frequency is increased in the region where orders are concentrated. When the operation of step d4 ends,
Alternatively, when the condition is not satisfied in step d3, the process proceeds to step d5, and it is determined whether a predetermined time has elapsed. For example, after a lapse of one minute, the process returns to step d3.

In each of the above embodiments, vehicle information is collected in order to manage taxi vehicles. However, the same applies to vehicle information collection such as luggage delivery vehicles to a plurality of stores and cash transport vehicles. Can be applied to

[0033]

As described above, according to the present invention, it is possible to designate a plurality of areas and set the frequency at which wireless data communication should be performed for each area according to necessity. For each vehicle,
The area to which the vehicle position belongs is identified, and wireless data communication is performed on the vehicle information to the base at a frequency set for the identified area. If the frequency is set low for areas where the need for vehicle information collection is small, information collection according to the needs of each area can be effectively performed while adjusting the data amount of the entire wireless communication to be approximately the specified capacity. It can be carried out.

Further, according to the present invention, it is possible to adjust the traffic amount so as to be substantially equal to the predetermined capacity of the radio circuit at every predetermined time, and to use the radio circuit efficiently. Further, according to the present invention, even if the frequency of wireless data communication in a selected area increases, each case in another area can be changed to appropriately adjust the traffic volume as a whole.

According to the present invention, the frequency of wireless data communication is set and the applicable area is selected according to a schedule that is set in advance according to the time of day, so that taxi dispatch can be performed. In addition, when the demand for the vehicle changes in accordance with the time zone, it is possible to appropriately collect the vehicle information.

Further, according to the present invention, an area in which the frequency of wireless data communication is increased is selected based on the concentration state of the vehicle, so that the concentration state of the vehicle can be grasped more accurately and appropriate measures can be taken. Vehicle information can be obtained.

Further, according to the present invention, since the selection of the area where the frequency of performing the wireless data communication is increased is performed based on the demand state of the vehicle, the vehicle information belonging to the area of high demand can be grasped with high accuracy. Management that satisfies demand quickly can be performed.

Further, according to the present invention, when collecting vehicle information including positions from a plurality of vehicles by wireless data communication, the frequency setting means provided at the base sets the frequency of performing wireless data communication to a plurality of areas. Is done. In each vehicle, the position detecting means detects the vehicle position, the area identifying means identifies the area to which the vehicle position belongs, and the wireless communication means includes vehicle information including the vehicle position at a frequency set for the identified area. Wireless data communication with the base station. Since the frequency of wireless data communication between the vehicle and the base varies from region to region, the frequency was set higher for areas with high necessity and lower for areas with low necessity, to meet the needs. The collection of vehicle information can be performed by effectively utilizing the capacity of the wireless line.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic system configuration according to an embodiment of the present invention and a simplified map showing an example of specifying a region.

FIG. 2 is a block diagram showing a schematic electrical configuration of a vehicle-side device in the embodiment of FIG.

FIG. 3 shows a base station 10 and respective vehicles 11 to 1 in the embodiment of FIG.
FIG. 4 is a schematic diagram illustrating an example of a configuration of wireless data transmitted between the wireless communication device and the wireless device;

FIG. 4 is a flowchart showing an operation of the vehicle-side device 30 in the embodiment of FIG.

FIG. 5 is a flowchart showing an operation of the communication / vehicle management server 20 in the base station 10 in the embodiment of FIG.

FIG. 6 is a diagram showing a concept of automatic control of a distance condition in a region other than a designated area in the embodiment of FIG. 1;

FIG. 7 is a flowchart illustrating an operation of shortening a distance condition according to a concentration state of a vehicle according to another embodiment of the present invention.

FIG. 8 is a flowchart illustrating an operation of adjusting the frequency distribution according to a state in which orders such as taxis are concentrated in still another embodiment of the present invention.

FIG. 9 is an explanatory diagram schematically showing a concept underlying the present invention.

[Explanation of symbols]

 Reference Signs List 10 base station 11 to 14 vehicle 17 antenna 18 radio 20 communication / vehicle management server 21 processing means 22 input means 23 display means 24 recording medium 25 memory 26 timer 27 counter 30 vehicle-side device 34 client device 35 GPS positioning device 36 overall condition Storage memory 37 Regional condition storage memory 40 Arbitrary transmission data 50 ACK data 60 Arbitrary transmission conditions by region

Claims (7)

(57) [Claims] 1. A method for collecting vehicle information including vehicle positions from a plurality of vehicles by wireless data communication between a base and each vehicle, comprising: specifying a plurality of regions; Set the frequency at which data communication should be performed. For each vehicle, identify the area to which the vehicle position belongs, and collect vehicle information that performs wireless data communication on vehicle information to the base at the frequency set for the identified area. In the method, the frequency set for each area is adjusted to be higher than the other areas for an area selected according to a predetermined criterion, and the frequency is set so that the traffic amount is substantially equal to that of a wireless line. A vehicle information collecting method, wherein the vehicle information is adjusted to have a predetermined capacity. 2. The vehicle information collecting method according to claim 1, wherein the adjustment so that the capacity becomes substantially the predetermined capacity is performed at predetermined time intervals. 3. The vehicle information collecting method according to claim 2, wherein the adjustment to obtain the substantially predetermined capacity is performed so as to change a condition other than a selected area. 4. The vehicle information collecting method according to claim 1, wherein the selection is performed based on a schedule preset for a frequency and an application area according to a time zone of a day. 5. The vehicle information collecting method according to claim 1, wherein the selection is performed based on a concentration state of the vehicle. 6. The vehicle information collecting method according to claim 1, wherein the selection is performed based on a demand state of the vehicle. 7. An apparatus for collecting vehicle information including vehicle positions from a plurality of vehicles by wireless data communication between a base and each vehicle, provided at the base and specifying a plurality of areas, Frequency setting means for setting the frequency of performing wireless data communication; position detecting means mounted on each vehicle and detecting the vehicle position; identifying the area to which the vehicle position detected by the position detecting means is mounted and mounted on each vehicle. And the frequency set by the frequency setting means for the area mounted on each vehicle and identified by the area identification means,
In a vehicle information collecting apparatus including a wireless communication means for performing wireless data communication with vehicle information with respect to vehicle information, a frequency set for each of the above areas may be set for an area selected according to a predetermined standard. A vehicle information collecting apparatus, comprising: an adjusting unit that adjusts the frequency so as to be larger than other areas and adjusts the frequency so that a traffic amount becomes substantially a predetermined capacity of a wireless line.