JP4759461B2 - Road information authenticity judgment method - Google Patents

Description

  The present invention relates to a road information authenticity determination method for reliably determining the authenticity of road information obtained by communication from a vehicle traveling on a road.

  Conventionally, a system has been proposed in which the current position, moving direction, and moving speed of a vehicle are transmitted as road information from the vehicle to the information aggregation server via the roadside antenna, and road information such as traffic jam information is provided from the information aggregation server to the following vehicle. (Patent Document 1). In this case, points are added to the vehicle that has provided the road information, and the acquired points can be used for discounting the road information provision fee.

  In addition, the information provided from the vehicle (information provider / information providing device) via the network using the operation information of the accelerator pedal, the brake pedal, etc., the remaining fuel information, and the electrical component status information such as the wiper / lamp as road information There has also been proposed a system for providing information to an information mediation server (information mediator) having an authentication function of the device, and providing the obtained road information from the information mediation server to another vehicle (information user) via a network. (Patent Document 2). In this case, compensation is distributed to the information provider from the information broker.

JP 2004-94918 A (paragraphs [0108], [0112], FIG. 6) JP 2006-31723 A (paragraphs [0049], [0086], [0143], [0177], [0178], FIG. 6, FIG. 15, FIG. 34, FIG. 51)

  By the way, in the road information acquisition system according to the related art according to Patent Document 2, the information providing vehicle is authenticated, the road information provided from the information providing vehicle is determined to be true (correct), However, it is impossible to deny the possibility that the information provider will send fake road information to the server in order to obtain compensation.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a road information authenticity determination method capable of reliably determining the authenticity of road information transmitted from a vehicle. To do.

  In the road information authenticity determination method according to the present invention, road information is obtained from one vehicle through one roadside communication device, and road traffic information related to the road information obtained by the one vehicle is obtained through another roadside communication device. A road information authenticity determination method for determining the authenticity of the road information when delivering to another vehicle, wherein the one vehicle enters the communication area of the one roadside communication device, The step of transmitting the ID of the roadside communication device to the one vehicle, the one vehicle connecting the received ID of the one roadside communication device and the road information obtained by itself, and connecting the link information to the one vehicle. Transmitting to the roadside communication device, the one roadside communication device transmitting the received connection information to the road information authenticity determining device, and the road information authenticity determining device receiving the connection information received this time The one road in the information The ID of the communication device and the ID of the roadside communication device in the connection information previously received from the one vehicle are collated to determine whether or not they are adjacent to each other. Determining that the road information in the information is true.

  According to this invention, the road information authenticity determination device includes the ID of the one roadside communication device in the connection information received this time and the ID of the roadside communication device in the connection information received last time from the one vehicle. However, if it is in the adjacent positional relationship, it is determined that the road information in the connection information received this time is true. The authenticity of the road information can be determined with certainty.

  In this case, when it is determined that the road information is true, a consideration point increasing step for increasing the consideration point of the one vehicle is provided, thereby increasing the consideration points of only the vehicle that provided the true road information. Can be made.

  According to this invention, the authenticity of the road information transmitted from the vehicle can be determined with certainty.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a part of an infrastructure configuration example of a road information collecting / providing system 10 to which an embodiment of a road information authenticity judging method according to the present invention is applied.

  In this road information collecting / providing system 10, roadside communication devices 21 to 23 having different IDs at points A to C are installed at predetermined intervals on a road 16 whose direction indicated by an arrow is a passing direction. Another road 18 joins the road 16 at a point D between the points B and C.

  On the road 16, the vehicle (one vehicle) 11 is present within the communication range of the roadside communication device 22 installed at the point B, and the vehicle (other vehicle) 12 is installed at the point C. It exists within the communication range.

  The vehicle 13 traveling on the road 18 can enter the communication range of the roadside communication device 22 installed at the point B after joining the road 16 at the point D.

  The roadside communication devices 21 to 23 are configured to be capable of real-time communication with the center device 32 via the network 30.

  FIG. 2 shows a system configuration example of the road information collecting / providing system 10 shown in FIG.

  As can be seen from FIG. 2, the road information collecting / providing system 10 includes a center device 32, roadside communication devices 21 to 23 connected to the center device 32 via a network 30 via a wireless LAN, and the roadside communication. It is comprised from the vehicles 11-13 which can carry out wireless communication with the apparatuses 21-23.

  Each of the vehicles 11 to 13 has a control unit (CPU) 100. The control unit 100 detects a GPS device 102 for specifying its own position, a display unit 104 that also serves as a display unit of the navigation device, and a vehicle speed. Vehicle speed sensor 106, vibration sensor 108 for detecting vehicle vibration, temperature sensor 112 for measuring outside air temperature, memory 114 for storing secret key a, encryption processing unit 116, wireless transmission / reception unit 118, and state capturing unit 120 are connected. Has been.

  The state capture unit 120 includes an accelerator opening sensor 122, a brake pressure sensor 124, a wiper sensor 126, a handle sensor 128, a seat sensor 130, an antilock brake mechanism (ABS) 132, a skid prevention mechanism 134, and a movie camera 136. It is connected.

  The state capturing unit 120 sends information captured by these sensors to the control unit 100.

  The control unit 100 transmits vehicle information obtained by sensors connected to the control unit 100 and the state capturing unit 120 from the wireless transmission / reception unit 118 as road information.

  That is, the control unit 100 transmits road information (vehicle information) about the vehicles 11 to 13 obtained by itself to the roadside communication devices 21 to 23 existing within the communication range via the wireless transmission / reception unit 118. The roadside communication devices 21 to 23 transmit the received road information to the center device 32. The center device 32 performs predetermined processing such as statistical processing on the road information of the vehicles 11 to 13 and uses it as road traffic information such as traffic jam information.

  At the point where the center device 32 obtains road information obtained from the vehicles 11 to 13, for example, operation information of the skid prevention mechanism 134, it is assumed that the road is slippery, such as road surface freezing, and the wiper sensor 126 operates. A situation where a road at a certain point is wet with rain is estimated, and information such as unevenness of the road at that point is estimated from the value of the vibration sensor 108. Furthermore, traffic jam information at the point is estimated from information from the vehicle speed sensor 106 and information from the movie camera 136.

  Thus, in the center device 32, the road information obtained from the vehicles 11 to 13 through the roadside communication devices 21 to 23 is used as it is, or the road information is subjected to predetermined processing such as statistical processing on the road information in real time. And the created road traffic information is distributed to the vehicles 11 to 13 via the roadside communication devices 21 to 23.

  The roadside communication devices 21 to 23 include a control unit (CPU) 200. The control unit 200 includes a processing unit 202 that performs predetermined processing such as statistical processing on data stored in the data memory 201, and a secret. A memory 204 for storing the key b, an encryption processing unit 206, a LAN connection unit 208, and a wireless transmission / reception unit 210 are connected.

  The wireless transmission / reception unit 210 of the roadside communication devices 21 to 23 transmits and receives information wirelessly with the wireless transmission / reception unit 118 of the vehicles 11 to 13 that are within the communication range. The LAN connection unit 208 of the roadside communication devices 21 to 23 is wirelessly connected to the center device 32 via the network 30 and also to the LAN connection unit 208 of the other roadside communication devices 21 to 23 via the network 30. Wireless connection is established (see FIG. 1).

  The center device 32 includes a control unit 300. The control unit 300 includes a vehicle database (vehicle DB) 302 in which vehicle IDs (vehicle number etc.) for identifying the vehicles 11 to 13 are stored, and roadside communication devices 21 to 21. Roadside communication device database (roadside communication device DB) 304 storing roadside communication device IDs (manufacturing numbers, etc.) for identifying 23, road traffic information of points A, B, and C on road 16, and between AB, between BC, etc. Road database (road DB) 306 storing public road traffic information, public key database (public key DB) 308, price point database (value point DB) 310 storing price points for each of the vehicles 11-13, price points A calculation unit 312, a cryptographic processing unit 314, and a processing unit 318 that performs predetermined processing such as statistical processing on data stored in the data memory 316. Fine LAN connection unit 320 is connected.

  The LAN connection unit 320 of the center device 32 is wirelessly connected to the LAN connection unit 208 of the roadside communication devices 21 to 23 via the network 30.

  Each of the control units 100, 200, 300 and the processing units 202, 318 functions as various function realizing means by executing a program stored in a ROM (not shown) or the like.

  The road information collecting / providing system 10 is basically configured and operates as described above. Next, a sequence shown in FIG. 3 regarding the operational effects of the road information authenticity determination method according to this embodiment. This will be described with reference to the drawings.

  In the sequence S11 of the vehicle 11, when the control unit 100 of the vehicle 11 traveling on the road 16 in the arrow direction detects that the radio wave of the roadside communication device 22 is received through the wireless transmission / reception unit 118, the control unit 100 The roadside communication device 22 is notified through the wireless transmission / reception unit 118 that the vehicle 11 has entered the communication area of the roadside communication device 22.

  The control unit 200 of the roadside communication device 22 that has received the notification through the wireless transmission / reception unit 210 prepares the ID of the roadside communication device 22 and the data 40 of the current date / time in sequence S12. In sequence S13, the encryption processing unit 206 The B information 42 is created by encrypting the data 40 with the secret key b read from the memory 204.

  Control unit 200 transmits encrypted B information 42 from wireless transmission / reception unit 210 to vehicle 11 in sequence S14.

  In sequence S <b> 15 of the vehicle 11, the control unit 100 connects the road information 43 acquired by the vehicle 11 with various sensors such as the GPS device 102 and the vehicle speed sensor 106 and the received B information 42 to create connection information 44. .

  In the sequence S16, the created connection information 44 is encrypted with the secret key a read from the memory 114 by the encryption processing unit 116, and the A information 46 is created.

  Next, the control unit 100 transmits the connection information 48 obtained by connecting the ID of the vehicle 11 to the encrypted A information 46 to the roadside communication device 22 through the wireless transmission / reception unit 118 in sequence S17.

  The control unit 200 of the roadside communication device 22 transfers the connection information 48 received through the wireless transmission / reception unit 210 to the center device 32 via the LAN connection unit 208 and the network 30 in sequence S18.

  First, the control unit 300 of the center apparatus 32 uses the public key a (corresponding to the secret key a) read out from the public key DB 308 in sequence S19 in the connection information 48 received through the LAN connection unit 320 in the road. The information 43 and the B information 42 are decrypted, and the B information 42 is decrypted in the concatenated information 44 with the public key b (corresponding to the secret key b) read from the public key DB 308 to obtain the ID and date / time of the roadside communication device 22. Data 40 is obtained. Then, the ID of the vehicle 11 and the ID of the roadside communication device 22 are overwritten and stored in the temporary storage area 316A in the data memory 316.

  Next, in sequence S20, the ID of the roadside communication device 23 at the time of the previous reception of the vehicle 11 is read from the previous reception area 316B in the data memory 316, and the ID of the roadside communication device 23 at the time of the previous reception of the vehicle 11 and the current time are read. Based on the ID of the roadside communication device 22 at the time of reception, it is checked whether or not the roadside communication devices 22 and 23 are in an adjacent positional relationship, and if they are in an adjacent positional relationship {in this example, the roadside communication device at the current reception point B 22 and the roadside communication device 23 at the previous reception point C are in an adjacent positional relationship (adjacent relationship) on the road 16, so it is determined that the IDs are adjacent to each other. }, It is determined that the road information 43 received and decoded this time (the road information 43 acquired in the vehicle 11 by various sensors such as the vehicle speed sensor 106 in sequence S15) is true.

  Next, since the authenticity determination is true in sequence S21, the information in the previous reception area 316B is overwritten with the information in the temporary storage area 316A. In other words, the ID of the roadside communication device 22 in the previous reception area 316B is overwritten from the ID of the roadside communication device 23 to the ID of the roadside communication device 22 in the adjacent positional relationship.

  When it is determined that the road information 43 is true, in the sequence S22, the consideration points of the vehicle 11 are increased and the data of the consideration point DB 310 is updated.

  Thereafter, when it is determined that the road information 43 is true, the processing unit 318 performs processing such as statistical processing based on the road information 43 to create road traffic information such as obstacle detection information and traffic jam information. 30, and transmitted to the following vehicle 12 through the roadside communication device 23.

  Here, the statistical processing or the like is based on the standard deviation or dispersion of the steering wheel operation angle per unit time in the section from the point C to the point B, the distribution of the travel time of the vehicle 11 etc. from the point C to the point B, etc. Road traffic information is created by judging the possibility of road obstacles and traffic jams, etc., and the created road traffic information is displayed on the display unit 104 of the vehicle 12 that has entered the communication range of the roadside communication device 23 as a driving caution.

  Note that at the time of collation of the sequence S20, for example, the ID of the roadside communication device 22 currently received obtained from the vehicle 13 that merges from the road 18 to the road 16 at the point D, and the vehicle 13 stored in the previous reception area 316B. The road data received this time is determined to be false because the roadside communication device ID is not in an adjacent positional relationship.

  As described above, according to the above-described embodiment, for example, road information 43 is obtained from one vehicle 11 through one roadside communication device 22, and road traffic information related to the road information 43 obtained by one vehicle 11 is obtained from another vehicle 11. When it is determined whether the road information 43 is delivered to another vehicle 12 through the roadside communication device 23, when one vehicle 11 enters the communication area of the one roadside communication device 22, one roadside communication device The step of transmitting the B information 42 obtained by encrypting the ID of 22 to one vehicle 11 (sequence S14), and the one vehicle 11 includes the received B information including the ID (encrypted ID) of the one roadside communication device 22 42 and the road information 43 obtained by itself are connected and encrypted, and the connection information 48 obtained by connecting the encrypted A information 46 and the ID information of one vehicle 11 is transmitted to the one roadside communication device 22. (Sequen S17), the one roadside communication device 22 forwards and transmits the received connection information 48 to the center device 32 having a function as a road information authenticity determination device (sequence S18), and the center device 32 receives the connection information. 48, the A information 46 and the B information 42 in 48 are decoded and the ID of one roadside communication device 22 in the connection information 48 received this time, and the ID of the roadside communication device in the connection information previously received from one vehicle 11 Are in the adjacent positional relationship, and if they are in the adjacent positional relationship, the road information 43 in the connection information 48 received this time is determined to be true (sequence S20).

  In this way, the center device 32 has an adjacent positional relationship between the ID of one roadside communication device 22 in the connection information 48 received this time and the ID of the roadside communication device in the connection information received last from the one vehicle 11. It is checked whether or not they are in a relationship (installed at adjacent positions on the road 16), and adjacent positional relationships (in FIG. 1, the positional relationship between the roadside communication device 22 and the roadside communication device 23, or the roadside communication device). 21 and the roadside communication device 22), it is determined that the road information 43 in the connection information 48 received this time is true, so that the road information 43 transmitted from the vehicle 11 is true. It is possible to reliably determine false.

  In this case, when it is determined that the road information 43 is true, a consideration point increasing step (sequence S22) for increasing the consideration point of one vehicle 11 is provided, thereby providing the true road information 43. Consideration points for only the vehicle 11 can be increased.

  Note that the present invention is not limited to the above-described embodiment, and it is needless to say that various configurations can be adopted based on the contents described in this specification.

It is a partial explanatory view of an infrastructure configuration example of a road information collection and provision system to which an embodiment of a road information authenticity determination method according to the present invention is applied. The example of a system configuration | structure of the road information collection and provision system of the example of FIG. 1 is shown. It is a sequence diagram for operation | movement description of a road information collection and provision system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Road information collection and provision system 11-13 ... Vehicle 16, 18 ... Road 21-23 ... Roadside communication apparatus 30 ... Network 32 ... Center apparatus 100, 200, 300 ... Control part

Claims (2)

Road information obtained from one vehicle through one roadside communication device, and road traffic information related to the road information obtained from the one vehicle is distributed to another vehicle through another roadside communication device. A road information authenticity determination method for determining authenticity,
Transmitting the ID of the one roadside communication device to the one vehicle when the one vehicle enters the communication area of the one roadside communication device;
The one vehicle connects the received ID of the one roadside communication device and the road information obtained by the vehicle, and transmits the connection information to the one roadside communication device;
The one roadside communication device transmits the received connection information to a road information authenticity determination device;
In the road information authenticity determination device, the ID of the one roadside communication device in the connection information received this time and the ID of the roadside communication device in the connection information previously received from the one vehicle are adjacent to each other. And if it is in the adjacent positional relationship, it is determined that the road information in the connection information received this time is true, and if not in the adjacent positional relationship, in the connection information received this time Determining that the road information is false ;
The road information authenticity judgment method characterized by having. In the road information authenticity judgment method according to claim 1,
Further, when the road information is determined to be true, the consideration point of the one vehicle is increased , and when the road information is determined to be false, the consideration point of the one vehicle is maintained. ,
The road information authenticity judgment method characterized by having.

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