Data processing apparatus for probe traffic information and data processing system and method for probe traffic information

• US 20060223529A1
• Filed: 02/23/2006
• Published: 10/05/2006
• Est. Priority Date: 03/31/2005
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Moita, Takashi, Oda, Itaru, Yokota, Takayoshi, Sugawara, Satoshi
• Application Number:
  US11/359,376
• Publication Number:
  US 20060223529A1
• Time in Patent Office: Days
• US Class Current: 455/433
• CPC Class Codes: G08G 1/0104 Measuring and analyzing of parameters relative to traffic conditions

Abstract

By utilizing a cell phone carried by a driver or a fellow passenger to exchange with a base station during talking (through polling during non-talking), position information of the cell phone is obtained. The position information is collected and gathered as probe data and by matching the data with road map data, traffic congestion information on roads is generated. Then, when a business car of a driver carrying a cell phone is not traveling in a range initially predicted, it is decided whether position data of the cell phone is suitable as probe information and accurate traffic congestion information is generated.

Claims

1. A data processing system comprising a processor having a CPU and a memory unit and adapted to transmit/receive information from/to a cell phone, wherein

said memory unit of said data processing system includes a cell phone non-talking period information database for storing information obtained from the cell phone during non-talking over said cell phone, a base station position information database for storing position information of respective ones of a plurality of base stations, a sector position information database for storing position information of respective ones of a plurality of sectors defined by dividing a communication area of each of the plural base stations, a road information database for storing road information of roads running through the communication areas of the plural base stations and an area information database for storing area information of each sector each communication area of each base station has, and

wherein, in said data processing system, the area information of each sector each communication area of each base station has is watched at a constant period;

and

a traveling speed of the car is calculated from traveling time and traveling distance of said car on the basis of position data before the area information changes and position data after the area information changes to thereby generate traffic information.

2. A data processing system for probe traffic information according to claim 1, wherein the information from the cell phone during non-talking over said cell phone is for making a request to a nearby cell phone base station for registering a position of its own.

3. A data processing system for probe traffic information according to claim 1, wherein when the area information watched at the constant period changes, the car is determined as being in motion.

4. A data processing system for probe traffic information according to claim 1, wherein said memory unit of said data processing system includes a map information database for storing map information of neighborhoods inclusive of the communication areas of said plural base stations.

5. A data processing system for probe traffic information according to claim 1, wherein generation of the traffic information is carried out by comparing the traveling speed with a predetermined speed stored in said road information database and determining a jam when said traveling speed is smaller than said predetermined speed beyond a first predetermined range and a congestion state when said traveling speed is smaller than said predetermined speed beyond a second predetermined range.

6. A data processing system for probe traffic information according to claim 1, wherein drive mode input means is provided for the cell phone and when said drive mode input means is turned on, the information from said cell phone is acquired.

7. A data processing system for probe traffic information according to claim 1, wherein said road information includes running route information and one or two or more pieces of running permissible direction information, road construction work information, legal speed and traffic regulation.

8. A data processing system for probe traffic information according to claim 6, wherein said drive mode input means provided for the cell phone includes a drive switch to permit said cell phone to be operated externally and by turning on said drive switch, cell phone information presented from said cell phone is gathered as probe traffic information at a point where talking over said cell phone is started and at a point where the talking is ended.

9. A data processing system comprising a processor having a CPU and a memory unit and adapted to transmit/receive information from/to a cell phone,

wherein said memory unit of said data processing system includes a cell phone talking period information database for storing information obtained from the cell phone during talking over said cell phone, a base station position information database for storing position information of respective ones of a plurality of base stations, a sector position information database for storing position information of respective ones of a plurality of sectors defined by dividing a communication area of each of the plural base stations, a road information database for storing road information of roads running through the communication areas of the plural base stations, and

wherein, in said data processing system, first cell phone information is acquired which is presented from the cell phone at a point where talking over said cell phone is started;

second cell phone information is acquired which is presented from said cell phone at a point where talking over said cell phone is ended;

traveling time and traveling distance of said car are calculated on the basis of said first cell phone information and second cell phone information; and

a traveling speed of said car is calculated from the traveling time and traveling distance of said car to thereby generate traffic information.

10. A data processing system for probe traffic information according to claim 9, wherein talking over said cell phone is started when a handset of a partner cell phone is rendered off.

11. A data processing system for probe traffic information according to claim 9, wherein talking over said cell phone is ended when a handset of a partner cell phone is rendered on.

12. A data processing system for probe traffic information according to claim 9, wherein a process is carried out in which when said traveling speed is far slower than the lowest speed of a car running on said road or when said traveling speed is so high as to deviate from an initially scheduled range, the information obtained from said cell phone is excluded so as not to be gathered into the probe traffic information.

13. A data processing apparatus for probe traffic information comprising a CPU and a memory unit and adapted to transmit/receive information to/from a cell phone,

wherein said memory unit of said data processing apparatus includes a cell phone non-talking period information database for storing information obtained from the cell phone during non-talking over said cell phone, a cell phone talking period information database for storing information obtained from said cell phone during talking over said cell phone, a base station position information database for storing position information of respective ones of a plurality of base stations, a sector position information database for storing position information of respective ones of a plurality of sectors defined by dividing a communication area of each of the plural base stations, a road information database for storing road information of roads running through the communication areas of the plural base stations and an area information database for storing area information of each sector each communication area of each base station has,

wherein, in said CPU, the area information of each sector each communication area of each base station has is watched at a constant period and when the area information watched at the constant period changes, the cell phone is determined as traveling and a traveling speed of a car carrying the cell phone is calculated from traveling time and traveling distance of said car on the basis of position data before the area information changes and position data after the area information changes, and

wherein, in said data processing apparatus, during talking over the cell phone, first cell phone information is acquired which is presented from the cell phone at a point where talking over said cell phone is started;

second cell phone information is acquired which is presented from said cell phone at a point where talking over said cell phone is ended;

traveling time and traveling distance of said car are calculated on the basis of the first cell phone information and second cell phone information;

a traveling speed of said car is calculated from the traveling time and traveling distance of said car; and

the traveling speed is compared with a predetermined speed stored in said road information database to determine either a jam or a congestion state when the traveling speed is smaller than the predetermined speed beyond either a first or a second predetermined range, or a jam when the traveling speed is smaller than the predetermined speed beyond the first predetermined range and a congestion state when the traveling speed is smaller than the predetermined speed beyond the second predetermined range.

14. A data processing apparatus for probe traffic information according to claim 13, wherein said road information includes running route information and one or two or more pieces of running permissible direction information, road construction work information, legal speed and traffic regulation.

15. A data processing apparatus for probe traffic information according to claim 13, wherein drive mode input means is provided for the cell phone, including a drive switch to permit said cell phone to be operated externally and by turning on said drive switch, cell phone information presented from said cell phone is gathered as probe traffic information at a point where talking over said cell phone is started and at a point where the talking is ended.

16. A data processing apparatus for probe traffic information according to claim 13, wherein the talking over said cell phone is started when origination of a partner cell phone is started.

17. A data processing apparatus for probe traffic information according to claim 13, wherein the talking over said cell phone is ended when communication with a partner cell phone is stopped.

18. A data processing apparatus for probe traffic information according to claim 13, wherein a process is carried out in which when said moving speed is low to deviate from the lowest speed of a car running on said road, the information obtained from said cell phone is excluded so as not to be gathered into the probe traffic information.

19. A data processing method for probe traffic information comprising:

a first step of reading, on the basis of log information of cell phones concerning a specified road, which log information is included in information of cell phone carriers based on talking over the cell phones and recorded and saved in a cell phone trader, traveling time and traveling distance of every cell phone carrier between a point where talking is started and a point where the talking is ended;

a second step of calculating a traveling speed of a cell phone carrier from the traveling time and traveling distance of said cell phone carrier read out in the first step;

a third step of putting aside and choosing a value of traveling speed remarkably slower than the lowest speed of a car running on the specified road from the traveling speed of said cell phone carrier calculated in the second step; and

a fourth step of comparing the traveling speed of said cell phone carrier chosen in the third step with a preset speed for the specified road to determine a jam or congestion state when the traveling speed is slower than the preset speed.

20. A data processing method for probe traffic information according to claim 19, wherein said speed is indicated in km/hour.

21. A data processing system comprising a processor having a CPU and a memory unit and adapted to transmit/receive information of a cell phone by means of said processor,

wherein said memory unit of said data processing system includes a sector position information database for storing position information of respective ones of sectors defined by dividing a communication area of respective ones of a plurality of base stations and a road information database for storing road information of roads running through the communication areas of said plural base stations, and

wherein, in said CPU, by consulting the information stored in said sector position information database and road information database, traveling time and traveling distance of a moving body carrying the cell phone are calculated from position data before the information changes and position data after the information changes, and traffic information is generated from the calculated information.

22. A data processing system for traffic information according to claim 21, wherein a traveling speed is determined from the traveling distance and traveling time and the traveling speed is compared with a predetermined value to make a choice according to the moving body.

23. A data processing method for traffic information adapted to process transmission/reception of information to/from a cell phone in a processing apparatus having a CPU and a memory unit, comprising:

storing information of respective ones of a plurality of sectors defined by dividing a communication area of respective ones of a plurality of base stations in a sector position information database;

storing road information of roads running through the communication areas of the plural base stations in a road information database;

calculating traveling time and traveling distance of a moving body carrying the cell phone from position data before the information changes and position data after the information changes by consulting the information stored in said sector position information database and road information database; and

generating traffic information from the calculated information.

24. A data processing method for traffic information according to claim 23, wherein a traveling speed is determined from the traveling distance and traveling time and the traveling speed is compared with a predetermined value to make a choice according to the moving body.