JP2015179374A - On-vehicle warning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a crime prevention function by allowing multiple vehicles to perform mutual authentication and cooperation.SOLUTION: On-vehicle warning systems 1 respectively mounted on multiple vehicles exchange authentication information including at least mutual identification information among circumferential vehicles so as to establish mutual authentication based on the identification information. The on-vehicle warning system 1 preserves the identification information of the circumferential vehicles with the establishment of the mutual authentication and position information related to the positions of the circumferential vehicles. When a damage action against a self vehicle is sensed, the on-vehicle warning system 1 transmits warning information with the identification information of the self vehicle to the circumferential vehicles. When warning information with the identification information of the circumferential vehicle is received from the circumferential vehicle, the on-vehicle warning system 1 performs a warning operation of contents corresponding to the position information of the circumferential vehicle corresponding to the identification information indicated by the received warning information.

Description

  The present invention relates to an in-vehicle warning device that warns against harmful acts such as car theft and on-vehicle aiming.

  Conventionally, as a means of dealing with perpetrated acts such as car theft and on-vehicle aiming, when a perpetual act on the vehicle is sensed, a wireless communication device such as a DCM (Data Communication Module) is used to provide a user or security authority. There is known a vehicular device that performs a notification (for example, see Non-Patent Document 1).

“G-BOOK.com”, [online], Toyota Media Services Corporation, [searched on January 28, 2014], Internet <URL: http://g-book.com/pc/default.asp >

  According to the technique described in Non-Patent Document 1, when an act of harming a vehicle occurs, the user can be notified through a route passing through the center from the vehicle. However, since the user is notified via the center after the offense has occurred, the user can only recognize after the fact. In addition, even if the occurrence of an offense is reported from the center to the security authorities, there is a risk that the damage will spread before the security staff arrives at the site. Thus, crime prevention measures that are carried out by a single vehicle in the field are limited in effect as to prevent harming actions.

  The present invention has been made to solve the above problems, and an object thereof is to provide a technique for improving a crime prevention function in cooperation with a plurality of vehicles.

  The in-vehicle warning device of the present invention includes a communication means, an authentication means, a storage means, a warning control means, a sensing means, and a warning information transmission means. The communication means is for two-way wireless communication with an in-vehicle warning device mounted on a surrounding vehicle existing around the host vehicle. The authentication means establishes mutual authentication based on the identification information by transmitting / receiving authentication information including at least the mutual identification information to / from surrounding vehicles. The storage unit stores, in the storage unit, surrounding vehicle information including identification information of the surrounding vehicle that has been mutually authenticated by the authentication unit, and position information regarding the position of the surrounding vehicle specified based on communication with the surrounding vehicle. .

  When the warning control means receives warning information accompanied by identification information of the surrounding vehicle from the surrounding vehicle, the surrounding vehicle corresponding to the identification information indicated by the received warning information based on the surrounding vehicle information stored in the storage means The warning operation with the contents corresponding to the position information of is executed. The sensing means determines whether or not an act of harming the host vehicle has been sensed. The warning information transmission means transmits warning information accompanied by identification information of the own vehicle to the surrounding vehicles via the communication means when it is determined that the perpetuating action is detected by the detection means.

According to the present invention, in an environment where a plurality of vehicles equipped with an in-vehicle warning device are parked, it is possible to grasp the mutual positional relationship by establishing mutual authentication by communicating with each other between neighboring vehicles. It can be done. Then, when a perpetration act on any vehicle for which mutual authentication has been established is detected, warning information relating to the perpetual conduct is deployed to surrounding vehicles, and each peripheral vehicle performs a warning action, so It is possible to prevent the vehicle from reaching nearby vehicles. Thus, crime prevention can be improved by sharing information in cooperation between a plurality of vehicles.

The block diagram showing the whole vehicle warning system composition. The figure showing a communication sequence. The flowchart showing the procedure of a mutual authentication process. The flowchart showing the procedure of warning information reception processing. The flowchart showing the procedure of warning information transmission processing.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment, It is possible to implement in various aspects.
[Description of configuration of in-vehicle warning system]
The configuration of the in-vehicle warning system 1 according to the embodiment will be described with reference to FIG. In the example shown in FIG. 1, an environment is assumed in which a plurality of vehicles A, B, and C each equipped with an in-vehicle warning system 1 are parked. The in-vehicle warning system 1 acts in harmony with the functions of a known electronic key system (so-called smart entry) that wirelessly communicates with a portable device (key) held by the user to lock and unlock the door and start the engine in cooperation with surrounding vehicles. It is a system that has added a function to warn against. The in-vehicle warning system 1 includes a security ECU 10, an LF transmission unit 11, an RF communication unit 12, an immobilizer 15, an engine ECU 16, a body ECU 17, a door lock 18, sensors 19, and an in-vehicle camera 20.

  The security ECU 10 communicates wirelessly with the user's portable device 3 held by the driver, and functions to perform door locking / unlocking and engine starting, and to guard against harmful acts in cooperation with surrounding vehicles that are mutually authenticated using wireless communication. It is an electronic control device that performs the function to perform. The security ECU 10 is an information processing apparatus mainly configured with a CPU, ROM, RAM, and the like (not shown). An LF transmitter 11, an RF communication unit 12, an immobilizer 15, and a body ECU 17 are communicably connected to the security ECU 10.

  The LF transmitter 11 is a wireless transmitter that transmits communication radio waves to the user portable device 3 held by the driver. The LF transmission unit 11 transmits information to the user portable device 3 using a radio wave of a predetermined long wave band frequency (LF: Low Frequency). The RF communication unit 12 is a communication device that performs bidirectional wireless communication using radio waves of a predetermined radio frequency (RF). The RF communication unit 12 includes an RF reception unit 13 and an RF transmission unit 14. The RF reception unit 13 receives communication radio waves transmitted from the user portable device 3 existing in the communicable range and the in-vehicle warning system 1 mounted on the surrounding vehicle. The RF transmission unit 14 transmits communication radio waves to the in-vehicle warning system 1 mounted on the surrounding vehicle.

  The immobilizer 15 is an electronic control device having an anti-theft function that controls permission / inhibition of engine start based on a unique ID code. The immobilizer 15 collates the ID code received by the security ECU 10 from the user portable device 3 with a unique ID code registered in advance. If the ID codes match as a result of the collation, the immobilizer 15 permits the engine ECU 16 to start the engine, and otherwise does not allow the engine to start.

The body ECU 17 is an electronic control device that controls various electrical components mounted on the vehicle. A door lock 18, sensors 19, and an in-vehicle camera 20 are connected to the body ECU 17 as electrical components to be controlled. The security ECU 10 can control the door lock 18, the sensors 19, and the in-vehicle camera 20 by communicating with the body ECU 17.

  The door lock 18 is a device that electrically locks and unlocks the door of the vehicle. The sensors 19 are various sensors for detecting an act of harming the own vehicle. Specifically, an infrared sensor for detecting a human body, a car City switch that detects opening and closing of a vehicle door and trunk, an impact sensor that detects impact applied to a car window and a vehicle body, and a Doppler that detects moving objects by irradiating radio waves. A sensor etc. are mentioned. The in-vehicle camera 20 is an imaging device that is installed in, for example, a vehicle rearview mirror, rearview mirror, or the like and captures a situation around the host vehicle.

  The user portable device 3 is a communication device used as an electronic key for locking and unlocking a door of a vehicle and starting an engine. The user portable device 3 receives LF band communication radio waves from the in-vehicle warning system 1 to acquire information, and transmits information to the in-vehicle warning system 1 using the RF band communication radio waves. The user portable device 3 has a function of transmitting a registered ID code to the in-vehicle warning system 1 connected for communication. Further, the user portable device 3 has a function of notifying the user of the contents of execution information and damage information (details will be described later) received from the in-vehicle warning system 1.

[Explanation of inter-vehicle communication sequence]
A communication sequence by the security ECU 10 of the in-vehicle warning system 1 mounted on each of the vehicles A, B, and C illustrated in FIG. 1 will be described with reference to FIG. FIG. 2 also illustrates a communication sequence between the in-vehicle warning system 1 of the vehicle A and the user portable device 3 used as the electronic key of the vehicle A. In the example of FIG. 2, the phase (a) in which mutual authentication is performed between vehicles, the phase (b) in which the perpetuating behavior is sensed in the vehicle B, and the phase (c) in which the pernicious behavior is sensed in the vehicle A. Assume one aspect.

  2A, the security ECU 10 of each of the vehicles A to C periodically transmits an authentication request to the surrounding vehicle using the RF communication unit 12 and is transmitted from the surrounding vehicle during parking. Received authentication request. When the security ECU 10 of each of the vehicles A to C receives an authentication request transmitted from the surrounding vehicle, the security ECU 10 returns a response signal to the surrounding vehicle that is the transmission source. In addition, when the security ECU 10 of each vehicle A to C receives a response signal from the surrounding vehicle, the security ECU 10 returns a mutual authentication notification to the surrounding vehicle that is the reply source, thereby establishing mutual authentication with the surrounding vehicle. Let

  In the situation of FIG. 2B, when the security ECU 10 of the vehicle B senses an act of harm to the vehicle B, the warning information is transmitted to the vehicles A and C that have been mutually authenticated in the situation of the aforementioned (a). To do. On the other hand, when the security ECU 10 of the vehicles A and C receives the warning information from the vehicle B, the security ECU 10 transmits a response signal to the vehicle B. The security ECU 10 of the vehicles A and C executes the warning mode of the host vehicle based on the warning information received from the vehicle B. When the warning information is received from the vehicle B, the security ECU 10 of the vehicle A transmits execution information indicating that the warning mode is set to the user portable device 3 registered as the electronic key of the vehicle A. .

  In the situation of FIG. 2 (c), when the security ECU 10 of the vehicle A senses the act of harming the vehicle A, the warning information is transmitted to the vehicles B and C that have been mutually authenticated in the situation of the aforementioned (a). To do. On the other hand, when the security ECU 10 of the vehicles B and C receives the warning information from the vehicle A, the security ECU 10 transmits a response signal to the vehicle A. Based on the warning information received from the vehicle A, the security ECU 10 of the vehicles B and C executes the warning mode of the own vehicle. In addition, the security ECU 10 of the vehicle A transmits damage information indicating that the perpetuating action has been received to the user portable device 3 registered as the electronic key of the vehicle A.

[Description of mutual authentication processing]
A procedure of mutual authentication processing executed by the security ECU 10 of the in-vehicle warning system 1 will be described with reference to the flowchart of FIG. This process is executed at predetermined control intervals while the host vehicle is parked. Here, the parking state is assumed to be a state after the engine is stopped and the door is closed, for example.

  In S100, the security ECU 10 periodically transmits authentication request information to the outside via the RF communication unit 12. This authentication request includes vehicle identification information that can identify the host vehicle. In S102, the security ECU 10 determines whether or not a response signal from the surrounding vehicle to the authentication request transmitted in S100 has been received. If the response signal has not been received (S102: NO), the security ECU 10 returns to S100 and periodically transmits authentication request information. On the other hand, when the response signal is received (S102: YES), the security ECU 10 proceeds to S104. Note that the response signal returned from the surrounding vehicle to the authentication request information includes the vehicle identification information of the surrounding vehicle.

  In S104, the security ECU 10 returns a mutual authentication notification to the surrounding vehicle that is the return source of the received response signal. This mutual authentication notification includes vehicle identification information of the host vehicle. In S106, based on the response signal received in S102, the security ECU 10 specifies the positional relationship between the surrounding vehicle that is the return source of this response signal and the host vehicle.

  Specifically, there is a method (for example, RSSI: Received Signal Strength Indication) of measuring the received radio wave intensity of the received response signal and specifying the distance between the surrounding vehicle and the own vehicle. Further, not only RSSI but also known techniques such as TOA (Time Of Arrival), TDOA (Time Difference Of Arrival), and AOA (Angle Of Arrival) may be used. Or it is good also as a structure which includes the information showing the present location measured by GPS in a response signal on the assumption that the GPS receiver (not shown) is mounted in the own vehicle and the surrounding vehicle. And based on the positioning result of GPS in the own vehicle and a surrounding vehicle, you may specify both positional relationship (distance and direction).

  In S108, the security ECU 10 registers, in the memory, surrounding vehicle information related to the surrounding vehicle for which mutual authentication has been established for the surrounding vehicle that is the source of the received response signal. The surrounding vehicle information includes vehicle identification information of the surrounding vehicle and information indicating the positional relationship (for example, distance) specified in S106. After S108, the security ECU 10 ends this process.

[Description of warning information reception processing]
A procedure of warning information reception processing executed by the security ECU 10 of the in-vehicle warning system 1 will be described with reference to the flowchart of FIG. This process is executed at predetermined control intervals while the host vehicle is parked.

  In S200, the security ECU 10 determines whether or not warning information has been received from a surrounding vehicle for which mutual authentication has been established by the above-described mutual authentication processing. Note that the alert information transmitted from the surrounding vehicle includes vehicle identification information of the surrounding vehicle and sensing information related to the sensors 19 that sensed the perpetrating action. When the alert information is received (S200: YES), the security ECU 10 proceeds to S202. On the other hand, when warning information is not received (S200: NO), security ECU10 returns to S200 and repeats determination.

In S202, which proceeds when the warning information is received, the security ECU 10 returns a response signal to the surrounding vehicle that is the transmission source of the received warning information. This response signal includes the vehicle identification information of the host vehicle. In S204, based on the position information included in the surrounding vehicle information registered by the above-described mutual authentication process, the security ECU 10 determines that the distance between the surrounding vehicle that is the source of the warning information and the host vehicle is within a predetermined short distance range. It is determined whether there is a long distance range.

  When the distance between the surrounding vehicle that is the source of the alert information and the host vehicle falls within a predetermined long distance range (S204: far), the security ECU 10 proceeds to S206. In S206, the security ECU 10 controls the immobilizer 15 and the body ECU 17 to start the first alert mode. The first alert mode is an operation mode in which, for example, more operation restrictions are applied to in-vehicle devices such as door locks and engines, or the sensitivity of sensors for crime prevention is increased than in a normal parking state. . In S208, the security ECU 10 notifies the user portable device 3 registered as an electronic key of the host vehicle of execution information indicating that the host vehicle is set to the first warning mode. After S208, the security ECU 10 ends this process.

  On the other hand, when the distance between the surrounding vehicle that is the source of the alert information and the host vehicle falls within a predetermined short distance range (S204: close), the security ECU 10 proceeds to S210. In S210, the security ECU 10 controls the immobilizer 15 and the body ECU 17 to start the second alert mode. The second warning mode is a mode in which a warning operation having a higher intensity than that of the first warning mode is performed. For example, more operation restrictions are imposed on in-vehicle devices such as door locks and engines than in the first alert mode, and the sensitivity of sensors for crime prevention is increased. In S212, the security ECU 10 operates the in-vehicle camera 20 through the body ECU 17 to photograph the situation around the host vehicle.

  In S214, the security ECU 10 notifies the user portable device 3 registered as an electronic key of the host vehicle of execution information indicating that the host vehicle is set in the second warning mode. In S216, the security ECU 10 transmits the camera image captured by the in-vehicle camera 20 to the surrounding vehicle that is the source of the alert information. After S216, the security ECU 10 ends this process.

[Description of warning information transmission processing]
A procedure of warning information transmission processing executed by the security ECU 10 of the in-vehicle warning system 1 will be described with reference to the flowchart of FIG. This process is executed at predetermined control intervals while the host vehicle is parked.

  In S300, the security ECU 10 determines whether or not an offense to the host vehicle has been detected based on information from the sensors 19 input through the body ECU 17. When the harming action for the host vehicle is detected (S300: YES), the security ECU 10 proceeds to S302. On the other hand, if no perpetuating action is sensed on the host vehicle (S300: NO), the security ECU 10 returns to S300 and repeats the determination.

  In S302, the security ECU 10 transmits warning information for notifying the surrounding vehicle that the perpetuating action has been detected in the own vehicle to the surrounding vehicle for which mutual authentication has been established by the above-described mutual authentication processing. The warning information includes vehicle identification information of the host vehicle and sensing information related to the sensors 19 that sensed the perpetrating action.

In S304, security ECU10 determines whether the response signal with respect to warning information was received from the surrounding vehicle. When the response signal is received (S304: YES), the security ECU 10 proceeds to S306. On the other hand, when the response signal is not received (S304: NO), the security ECU 10 returns to S302 and repeats transmission of the warning information. In S306, the security ECU 10 determines that the distance between the surrounding vehicle that is the transmission source of the received response signal and the host vehicle is based on the positional information included in the surrounding vehicle information registered by the above-described mutual authentication process.
It is determined whether it is a predetermined short distance range or a long distance range.

  When the distance between the surrounding vehicle that is the source of the response signal and the host vehicle falls within the predetermined short distance range (S306: close), the security ECU 10 proceeds to S308. On the other hand, when the distance between the surrounding vehicle that is the transmission source of the response signal and the own vehicle falls within the predetermined short distance range (S306: far), the security ECU 10 proceeds to S310.

  In S308, the security ECU 10 acquires camera image data captured by the in-vehicle camera 20 of the surrounding vehicle from the surrounding vehicle corresponding to the short distance range, and stores the acquired camera image data in the memory. In next S310, the damage information indicating that the perpetuating action is detected in the own vehicle is notified to the user portable device 3 registered as the electronic key of the own vehicle. After S310, the security ECU 10 ends this process.

[effect]
According to the in-vehicle warning system 1 of the embodiment, the following effects are produced.
In an environment where a plurality of vehicles equipped with the in-vehicle warning system 1 are parked, it is possible to grasp each other's positional relationship by establishing mutual authentication by communicating with each other between neighboring vehicles. Yes. And when the perpetuation act with respect to one of the vehicles which mutual authentication was established is detected, warning information can be expand | deployed with respect to a surrounding vehicle from the damaged vehicle. Each neighboring vehicle that has received the warning information executes the warning mode, so that it is possible to prevent the perpetrating action from reaching each neighboring vehicle. Thus, crime prevention can be improved by sharing information in cooperation between a plurality of vehicles.

  Further, by grasping the mutual positional relationship between the mutually authenticated vehicles, it is possible to select the intensity of the warning mode executed by the surrounding vehicle according to the distance between the damaged vehicle and the surrounding vehicle. Moreover, since the damaged vehicle can acquire the camera image imaged by the vehicle-mounted camera 20 from nearby vehicles existing nearby, it is possible to secure important evidence regarding the harming action.

  In addition, when the damage information is received from the surrounding vehicle, execution information indicating that the own vehicle has shifted to the alert mode can be transmitted to the user portable device 3. As a result, it is possible to promptly notify the user that an act of harming the vehicle is occurring in the vicinity of the host vehicle. Moreover, damage information can be transmitted to the user portable device 3 when a perpetuating action is detected in the host vehicle. As a result, it is possible to promptly notify the user that an act of harming the host vehicle has occurred.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle warning system, 10 ... Security ECU, 11 ... LF transmission part, 12 ... RF communication part, 13 ... RF reception part, 14 ... RF transmission part, 15 ... Immobilizer, 16 ... Engine ECU, 17 ... Body ECU, 18 ... door lock, 19 ... sensors, 20 ... in-vehicle camera.

Claims (6)

A communication means (12) for two-way wireless communication with an in-vehicle warning device mounted in a surrounding vehicle existing around the own vehicle;
Authentication means (10, S100 to S104) for establishing mutual authentication based on the identification information by transmitting / receiving authentication information including at least the mutual identification information with the surrounding vehicles via the communication means;
Storage means for storing, in the storage means, surrounding vehicle information including identification information of surrounding vehicles established by mutual authentication by the authentication means and position information related to the position of the surrounding vehicles specified based on communication with the surrounding vehicles. 10, S106, S108),
The identification information indicated by the received warning information based on the surrounding vehicle information stored in the storage means when the warning information accompanied by the identification information of the surrounding vehicle is received from the surrounding vehicle via the communication means. A warning control means (10, S204, S206, S210) for executing a warning operation of the content corresponding to the position information of the surrounding vehicle corresponding to
Sensing means (10, S300) for judging whether or not an offense to the vehicle has been sensed;
Warning information transmission means (10, S302) for transmitting warning information accompanied by identification information of the own vehicle to the surrounding vehicle via the communication means when it is determined that the perpetuating action is detected by the sensing means. ,
An in-vehicle warning device comprising: In the in-vehicle warning device according to claim 1,
The warning control means sets the strength of the warning operation according to the degree of distance between the vehicle and the surrounding vehicle, and executes a warning operation corresponding to the set strength,
An in-vehicle warning device. In the in-vehicle warning device according to claim 1 or claim 2,
When the distance between the host vehicle and the surrounding vehicle is within a predetermined range, the vigilance control unit performs shooting by a camera mounted on the host vehicle, and the captured image information is transmitted via the communication unit. Sending to nearby vehicles,
An in-vehicle warning device. In the in-vehicle warning device according to any one of claims 1 to 3,
Image information acquisition means (10, S308) for acquiring image information captured in the surrounding vehicle from the surrounding vehicle that has received the warning information transmitted by the warning information transmission means, via the communication means;
An in-vehicle warning device. In the in-vehicle warning device according to any one of claims 1 to 4,
Second communication means (11) for wireless communication with a predetermined user portable terminal;
When the warning information is received from the surrounding vehicle via the communication means, execution information is transmitted to the user portable terminal via the second communication means, indicating execution information indicating that the warning action is to be executed. Means (10, S208, S214);
An in-vehicle warning device comprising: In the in-vehicle warning device according to any one of claims 1 to 5,
Second communication means (11) for wireless communication with a predetermined user portable terminal;
Damage information transmitting means for transmitting damage information indicating that the host vehicle has been damaged to the user portable terminal via the second communication means when it is determined that the perpetuating action has been detected by the sensing means. 10, S310),
An in-vehicle warning device comprising:

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