Risk information processing method and server device

• US 10,521,749 B2
• Filed: 12/10/2015
• Issued: 12/31/2019
• Est. Priority Date: 12/26/2014
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Inventors: Amano, Hiroshi, Minami, Kimio, Nakano, Toshihisa, Wakabayashi, Tohru, Hirose, Takako
• Primary Examiner(s): Gills, Kurtis
• Application Number:
  US14/965,715
• Publication Number:
  US 20160189068A1
• Time in Patent Office: 1,482 Days
• CPC Class Codes: B60W 30/0956 the prediction being responsive to traffic or environmental parameters
• CPC Class Codes: G06F 16/2358 Change logging, detection, and notification replication G06F16/27
• CPC Class Codes: G06F 16/24578 using ranking
• CPC Class Codes: G06Q 10/0635 Risk analysis of enterprise or organisation activities
• CPC Class Codes: G08G 1/0112 from the vehicle, e.g. floating car data [FCD]
• CPC Class Codes: G08G 1/0129 for creating historical data or processing based on historical data
• CPC Class Codes: G08G 1/0133 for classifying traffic situation
• CPC Class Codes: G08G 1/0141 for traffic information dissemination
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096741 where the source of the transmitted information selects which information to transmit to each vehicle
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station
• CPC Class Codes: G08G 1/164 Centralised systems, e.g. external to vehicles

Abstract

A risk information processing method used in a risk information processing system that manages a degree of risk at a spot where a moving object is located includes: storing, as risk information in a storage, a degree of risk for a combination of spot and situation; and estimating first risk information for a first combination for which a degree of risk has not been input by using three or more pieces of risk information including degrees of risk for a second combination whose spot is the same as the first combination and whose situation is different from the first combination, for a third combination whose situation is the same as the first combination and whose spot is different from the first combination, and for a fourth combination whose situation is the same as the second combination and whose spot is the same as the third combination.

Claims

1. A risk information processing method used in a risk information processing system that manages a degree of risk at a target spot at which a moving object is located, comprising:

receiving, via a receiver of the risk information processing system, sensor data, which is collected at each of two or more spots different from the target spot;

determining, via a processor of the risk information processing system, a degree of risk of at least one event at each of the two or more spots from the sensor data collected at each of the two or more spots,

wherein, the at least one event includes at least one of the following events,

a) the presence of a vehicle within a first predetermined distance ahead of the moving object,

b) the presence of a vehicle within a second predetermined vehicle distance behind the moving object,

c) the presence of an oncoming vehicle within a predetermined oncoming-vehicle distance,

d) the presence of rainy weather,

e) the presence of road surface freezing,

f) the presence of pedestrians within a predetermined distance, wherein the number of the pedestrians is greater than a predetermined pedestrian threshold, and

g) the presence of bicycles within a predetermined distance, wherein the number of the number of the bicycles is greater than a predetermined bicycle threshold,

wherein, the sensor data indicates the occurrence of the at least one event,

wherein

the degree of risk of the at least one event at each of the two or more spots is determined based on whether an accident at a corresponding one of the two or more spots occurs when the sensor data is collected at the corresponding one of the two or more spots, and

the degree of risk of the at least one event at each of the two or more spots is represented by a value indicating whether the at least one event at the corresponding one of the two or more spots is a risk event;

storing, as risk information in a storage of the risk information processing system, the determined degree of risk for each of the two or more spots;

estimating, via the processor, first risk information of the target spot without sensor data of a first one of the events (a)-(g) at the target spot, by using the risk information stored in the storage, the first risk information being a degree of risk of the first one of the events (a)-(g) at the target spot; and

transmitting, by a transmitter of the risk information processing system, a warning notification for the target spot based on the estimated first risk information,

wherein the first risk information is estimated using second risk information, third risk information, and fourth risk information which are stored as the risk information in the storage,

wherein the second risk information

indicates a degree of risk of a second one of the events (a)-(g) at the target spot, the second one of the events (a)-(g) being different from the first one of the events (a)-(g), and

is determined in the determining operation based on whether an accident at the target spot occurs when, as the sensor data at the target spot, sensor data of the second one of the events (a)-(g) is collected at the target spot,

wherein the third risk information

indicates a degree of risk of the first one of the events (a)-(g) at the one of the two or more spots, and

is determined in the determining operation based on whether an accident at the one of the two or more spots occurs when, as the sensor data at the one of the two or more spots, sensor data of the first one of the events (a)-(g) is collected at the one of the two or more spots, and

wherein the fourth risk information

indicates a degree of risk of the second one of the events (a)-(g) at the one of the two or more spots, and

is determined in the determining operation based on whether an accident at the one of the two or more spots occurs when, as the sensor data at the one of the two or more spots, the sensor data of the second one of the events (a)-(g) is collected at the one of the two or more spots.

2. The risk information processing method according to claim 1, wherein

in the estimating operation, correlation of degrees of risk between the target spot and the one of two or more spots different from the target spot is calculated via the processor by using the second risk information and the fourth risk information, and the degree of risk of the first risk information is calculated, via the processor, from the degree of risk of the third risk information by using the calculated correlation of degrees of risk between the target spot and the one of the two or more spots different from the target spot.

3. The risk information processing method according to claim 1, wherein

in the estimating operation, correlation of degrees of risk between the occurrence of the first risk event and the occurrence of a second risk event is calculated via the processor by using the third risk information and the fourth risk information, and

the degree of risk of the first risk information is calculated, via the processor, from the degree of risk of the second risk information by using the calculated correlation of degrees of risk between the occurrence of the first risk event and the occurrence of the second risk event.

4. The risk information processing method according to claim 1, wherein the first risk information obtained in the estimating operation is stored in the storage of the risk information processing system.

5. The risk information processing method according to claim 1, further comprising:

storing, in the storage of the risk information processing system as individual risk information for an individual driver and as overall risk information for all drivers, a degree of risk for the individual driver that is input for a combination of a spot and an occurrence of the risk event;

calculating, via the processor, correlation of degrees of risk between the individual risk information and the overall risk information; and

calculating, via the processor, a degree of risk of the individual risk information from the degree of risk of the overall risk information by using the calculated correlation of degrees of risk between the individual risk information and the overall risk information.

6. The risk information processing method according to claim 2, further comprising:

storing, in the storage of the risk information processing system, frequency information in which frequencies of a traffic event and spots are associated with each other;

determining, via the processor, an order of processing of the spots by using the frequency information; and

determining, via the processor, the first risk information to be processed in accordance with the determined order of processing.

7. The risk information processing method according to claim 5, further comprising:

storing, in the storage of the risk information processing system, frequency information in which frequencies of driving of a plurality of drivers of all the drivers and the individual driver are associated with each other;

determining, via the processor, an order of processing of the plurality of drivers by using the frequency information; and

determining, via the processor, the individual risk information to be processed in accordance with the determined order of processing in the calculating the degree of risk of the individual risk information.

8. The risk information processing method according to claim 1, further comprising:

receiving, via the receiver, positional information indicative of a current position and sensor data indicative of a current risk event from the moving object;

acquiring, via the processor, a degree of risk for a combination of a spot indicated by the received positional information and the current risk event indicated by the sensor data from the storage of the risk information processing system; and

transmitting, via the transmitter, risk information based on the acquired degree of risk to the moving object.

9. The risk information processing method according to claim 8, further comprising:

in a case where the acquired degree of risk exceeds a threshold value that is held in advance, determining, via the processor, that the warning is presented, and transmitting, via the transmitter, the risk information based on the acquired degree of risk to the moving object; and

in a case where the acquired degree of risk is equal to or lower than the threshold value, determining, via the processor, that the warning is not presented, and transmitting no information based on the acquired degree of risk to the moving object.

10. A system comprising:

a plurality of sensors configured to collect sensor data at each of two or more spots; and

a server device that manages a degree of risk at a target spot, the server device comprising;

a receiver that receives the sensor data which is collected at each of the two or more spots by the plurality of sensors;

a processor that

1) determines a degree of risk of at least one event at each of the two or more spots from the sensor data collected at each of the two or more spots,

wherein, the at least one event includes at least one of the following events,

a) the presence of a vehicle within a first predetermined distance ahead of the moving object,

b) the presence of a vehicle within a second predetermined vehicle distance behind the moving object,

c) the presence of an oncoming vehicle within a predetermined oncoming-vehicle distance,

d) the presence of rainy weather,

e) the presence of road surface freezing,

f) the presence of pedestrians within a predetermined distance, wherein the number of the pedestrians is greater than a predetermined pedestrian threshold, and

g) the presence of bicycles within a predetermined distance, wherein the number of the number of the bicycles is greater than a predetermined bicycle threshold,

wherein the sensor data indicates the occurrence of the at least one event,

wherein

the degree of risk of the at least one event at each of the two or more spots is determined based on whether an accident at a corresponding one of the two or more spots occurs when the sensor data is collected at the corresponding one of the two or more spots, and

the degree of risk of the at least one event at each of the two or more spots is represented by a value indicating whether the at least one event at the corresponding one of the two or more spots is a risk event;

2) stores, as risk information in a storage of the system, the determined degree of risk for the each of the two or more spots; and

3) estimates first risk information of the target spot without sensor data of a first one of the events (a)-(g) at the target spot, by using the risk information stored in the storage of the system, the first risk information being a degree of risk of the first one of the events (a)-(g) at the target spot; and

a transmitter that transmits a warning notification for the target spot based on the estimated first risk information,

wherein the second risk information

indicates a degree of risk of a second one of the events (a)-(g) at the target spot, the second one of the events (a)-(g) being different from the first one of the events (a)-(g), and

is determined in the determining operation based on whether an accident at the target spot occurs when, as the sensor data at the target spot, sensor data of the second one of the events (a)-(g) is collected at the target spot,

wherein the third risk information

indicates a degree of risk of the first one of the events (a)-(g) at the one of the two or more spots, and

is determined in the determining operation based on whether an accident at the one of the two or more spots occurs when, as the sensor data at the one of the two or more spots, sensor data of the first one of the events (a)-(g) is collected at the one of the two or more spots,

wherein the fourth risk information

indicates a degree of risk of the second one of the events (a)-(g) at the one of the two or more spots, and

is determined in the determining operation based on whether an accident at the one of the two or more spots occurs when, as the sensor data at the one of the two or more spots, the sensor data of the second one of the events (a)-(g) is collected at the one of the two or more spots.