DE112019007129T5 - Information offering device, information sharing system, program and information offering method - Google Patents

Abstract

A server receives detection information indicating a condition detected on a vehicle from the vehicle; generates, according to a type of the vehicle, slip information indicating a possibility that the vehicle will slip based on the detection information that has been received and external environment information indicating an external environment; and sends the slip information to the vehicle.

Description

technical field

The present invention relates to an information offering device, an information sharing system, a program, and an information offering method for sharing information between vehicles, for example.

Technical background

There has been proposed a system called Intelligent Transportation System (ITS) that performs communication between vehicles or between a vehicle and an antenna on a road.

As one of applications in such a system, a driving assistance system has been proposed (see (PTL1) that offers road surface information to a vehicle approaching a host vehicle. According to PTL1, when a vehicle is detected that is approaching the host vehicle at a speed equal to is higher than a predetermined value, a road surface condition is detected and the detected road surface condition is sent to the vehicle.

quote list

patent literature

PTL1: Japanese Patent Laid-Open No. 2017-091338 (paragraphs [0006] and the like)

Summary of the Invention

Technical problem

However, in PTL1, a target that sends the road surface condition is a vehicle that is approaching the own vehicle. The detection and transmission of the road surface condition are performed in real time according to the approach of the vehicle, and the target road surface is limited to the vicinity of the vehicle's current location. For this reason, no warning can be received when a vehicle is traveling alone.

The present invention has been made in view of the above conventional example, and an object of the present invention is to widely offer information to other vehicles based on the experience of an own vehicle in order to share information effectively.

solution to the problem

According to one aspect of the present invention, there is provided an information offering apparatus characterized by including: receiving means for receiving detection information indicating a condition detected on a vehicle from the vehicle; generating means for generating, according to a type of the vehicle, based on the detection information that has been received and external environment information indicating an external environment, slip information indicating a possibility that the vehicle is slipping; and a transmission means for transmitting the slip information to the vehicle.

Advantageous Effects of the Invention

According to the present invention, it is possible to effectively share information by offering information to a vehicle based on the experience of an own vehicle.

character list

• 1 12 is a control block diagram of a vehicle according to an embodiment of the present invention.
• 2 12 is a diagram illustrating an example of a communication environment according to an embodiment.
• 3 Fig. 12 is a flowchart showing a procedure for collecting slack information.
• 4 Fig. 12 is a flowchart showing a procedure for sending slack information.
• 5 12 is a diagram showing an example of a configuration of slip information.
• 6 Fig. 12 is a flowchart showing a procedure on a case where slack information has been received.

Description of the finishes

A vehicle and an information offering device according to an embodiment of the present invention will now be described with reference to the drawings. In the description, the vehicle includes a four-wheel vehicle and a motorcycle. In the present embodiment, the motorcycle includes a tricycle with two rear wheels and a tricycle with two front wheels.

- communication system

2 Fig. 12 is a diagram schematically showing a communication system according to an embodiment of the present invention. In 2 are a vehicle 201 and a vehicle 202 are motorcycles and, according to the present embodiment, are equipped with components that are 1 are shown. A vehicle 203 is a four-wheeled vehicle, and according to the present embodiment also has the in 1 components shown. These vehicles 201 to 203 can communicate with a server 211 and can also communicate with each other. The vehicle 201 may communicate with the server 211 via, for example, a fixed antenna 210 embedded under a road or provided on or near the road. Even though 2 represents as if communication is peer-to-peer, it suffices that end-to-end communication partners are vehicles or a vehicle and a server and can be mediated, for example, via a relay station, a base station and/or the like. The configuration of the server 211 may be a general server and includes, for example, a control unit 2111 including a processor and a storage unit 2112. The server 211 functions as an information offering device for a vehicle.

- Configuration of the information offering device

1 12 is a block diagram of a control unit including a control unit 101 mounted on the vehicle 201 or the like. Although the vehicle 201 includes a drive unit such as an engine and a drive system such as a transmission, only the configuration related to the present embodiment will be described here. In 1 the control unit 101 controls the in 1 complete configuration shown. In the following description, it is assumed that the control unit 101 is mounted on the vehicle 201 . The control unit 101 includes, for example, a processor, a memory, and the like, and can communicate with the server 211 and other vehicles by executing a program, and can display information and slip information. A condition detection unit 110 includes various sensors that detect the condition of the vehicle 201 . This state is sent to the server 211, and slippage or the like is detected. The slip is a state in which wheels (tires) of the vehicle 201 slip without rolling on a road surface. In the present embodiment, slip includes wheel slip and wheel skid. However, the slip need only contain one of these. The slip information includes slip event information indicating that a slip has actually occurred and slip prediction information for predicting that a slip might occur.

The state detection unit 110 includes various sensors for detecting a slip. The slip is specified as one of behaviors of the vehicle estimated based on the detected condition. the inside 1 Sensor shown is an example according to the description. Examples of the sensor include a skid sensor 111, a speed sensor 112, an acceleration sensor 113, a side-slip sensor 114, a bank angle sensor 115, and a braking force sensor 116. The skid sensor 111 detects a skid state in which rotation of the wheels is stopped during running. For example, if a vehicle is equipped with an anti-skid brake, a signal indicating activation of the anti-skid function can be used as a substitute. The speed sensor detects the speed of the motor per unit of time.

In this example, the acceleration sensor 113 is an acceleration sensor capable of detecting angular acceleration around each axis in three mutually orthogonal axial directions in addition to linear acceleration. Alternatively, the sensor need only detect one of linear acceleration and angular acceleration.

The side-slip sensor 114 is a sensor for detecting the side-slip of the vehicle. When side-slip is detected based on a steering angle, a speed, and a yaw rate, it is not particularly necessary to use an independent sensor. In this case, the angular acceleration around the yaw axis is detected by the acceleration sensor 113, and the steering angle is detected from a steering axis. The four-wheel vehicle includes an anti-side-slip device, and the occurrence of a side-slip, that is, the occurrence of a slip can be determined when the function of the anti-side-slip device is activated. Since the motorcycle is not normally equipped with a side-slip sensor, the side-slip sensor 114 is omitted or newly provided.

A lean sensor 115 is a sensor specific to a motorcycle. The lean angle sensor 115 measures pitch about a roll axis. The inclination can be measured, for example, by using a weight pivoted on a measurement target shaft and a sensor that detects the rotation angle of the weight.

The control unit 101 sends the state information detected by the state detection unit 110 to the server 211. In the server 211, the occurrence of skid is determined based on detection results of various sensors as in the above example described. The slip information is accumulated in the server 211 and offered to the vehicle running near the fixed antenna 210 . Incidentally, the vehicle-mounted control unit 101 can also determine the occurrence of skid based on detection results of various sensors of the state detection unit 110 . In this case, the control unit 100 can make determination periodically, for example, and can send slip information indicating the possibility of slip to the server 211 .

An external environment detection unit 120 detects an external environment in which the vehicle is running. In this example, the external environment detection unit 120 includes a temperature sensor 121 and an external image pickup camera 122. The temperature sensor 121 detects a temperature. The outside image pickup camera 122 is a camera that captures the road surface and the surroundings, and the outside environment is specified from the captured image. Therefore, image processing is required. The image processing can be carried out with the control unit 101 or a separate processor for image processing can be provided in the external image recording camera 122 . The outdoor environment is weather, and for example, weather information from the server 211 or the like can be used by a wireless communication unit 130 and as the weather information. The external environment specified by the external environment detection unit 120 is used to generate skid prediction information indicating the possibility of a skid and specifying the cause of a skid that has actually occurred.

The wireless communication unit 130 transmits and receives signals to and from other vehicles 201 and 203 and to and from the server 211 via the antenna 210 according to a predetermined standard. The signals sent to and received from the server 211 include weather information from the server 211, information on the state and environment respectively detected by the state detection unit 110 and the external environment detection unit 120 (collectively referred to as detection information), and the like. For example, under the control of the control unit 101, the wireless communication unit 130 periodically transmits these pieces of detection information. The antenna 210 receives the detection information in its coverage and transmits the detection information to the server 211.

A position detection unit 140 includes a GPS device, for example, and can detect a current position. Other sensors can also be used as long as a current position can be detected. The storage unit 150 stores various information such as the slack information received from the server, programs, and the like. In the present embodiment, a non-volatile memory device is used to accumulate information. Incidentally, the content of the slip information will be referred to later 5 described.

A user interface unit 160 includes an operation switch and a display unit (including a touch panel and the like). In addition to various information, a map or the like can also be displayed. Also, a desired marker or the like can be displayed superimposed on a map.

- Slack information collection process

with the inside 1 In the configuration shown, the vehicle 201 of the present embodiment can collect and transmit detection information and receive the skid information collected by the server 211 . 3 shows an example of a slack information collection process by the server 211. The example in FIG 3 is achieved by executing a program by the control unit 2111, for example. In the present embodiment, the procedure of 3 started when detection information is received from the vehicle or when a timer (not shown) set at predetermined time intervals expires.

First, the control unit 2111 of the server 211 determines whether there is a captured outside image that can be used (S301). If an image is included in the received detection information or if an image that can be used by a camera near the antenna 210 with which the detection information has been received, it is determined that there is a captured outside image. When it is determined that there is a captured external image, the external environment including the captured image is specified and external environment information, which is information indicating the external environment, is generated (S303). Examples of the information used to specify the outside environment include weather information, temperature, and the like, in addition to the image. The specified outdoor environment is, for example, the weather (no rain, no snowfall, no rain and no snowfall, or the like) from the weather information, or the temperature from the temperature sensor 121. In the outdoor environment information, the weather can be presented by a code or the like that indicates the weather, and the temperature can be represented by a numeric value indicating the temperature. A road surfaces condition (quicksand, wetness, snow cover, white lines, drain covers and the like) is specified from the captured image by image recognition processing. Rain and snowfall can also be specified through image editing. The specified road surface condition and weather can also be represented by corresponding codes or the like. The image recognition can be performed based on a degree of matching with a pattern provided in advance, or a pattern corresponding to a road surface condition can be learned by machine learning. Rain and snowfall recognized by image recognition can be preferentially used for rain and snowfall according to weather information.

On the other hand, when it is determined that no captured outside image is available, the outside environment with no image is specified, and the outside environment information is generated (S305). That is, here, among the outside environments specified in step S303 described above, only those based on the temperature or the weather information are specified as the outside environment. For example, the specified outdoor environments include the weather (no rain, no snow, no rain and no snow, or the like) from the weather information and the temperature from the temperature sensor 121.

Then, it is determined whether the slip prediction should be performed (S307). Whether the slip prediction should be performed may be determined in relation to a preset setting, for example. The setting value to be referred to is stored in the control unit 101 or the storage unit 150, and is referred to. If it is desired to generate the slip information only when the actual slip occurs, it suffices not to perform the slip prediction. If the slip prediction is fixed in advance without an option, the determination in step S307 is unnecessary. In this case, the process may firmly branch to step S311 when the slip prediction is performed and to step S313 when the slip prediction is not performed.

When the slip prediction is performed, the slip prediction is performed based on the external environment information, and the slip prediction information is generated (S311). The slip prediction is performed as follows, for example. For example, when the temperature is below freezing and the road surface condition is determined to be a wet road surface, there is a possibility that the road surface is frozen. Therefore, in this case, skid prediction information caused by road surface freezing is generated. For example, a specific unique code is assigned to a skid prediction caused by road surface freezing, and the specific unique code is generated as skid prediction information. The same applies to other causes. For example, when the road surface condition is snowy, skid prediction information caused by the snowy road is generated. The slip prediction caused by road surface freezing or snow cover can be applied regardless of whether the vehicle is a motorcycle or a four-wheeled vehicle. For example, when no image can be referred to, only weather information needs to be referred to, and when there is snow cover forecast, slip forecast information caused by snow cover can be generated, and when the temperature after rain is below freezing, can slip prediction information caused by road surface freezing.

If a captured external image can be used, and a manhole cover or a crosswalk (white line) in the middle of a curve or at a curve or a wet road surface is detected from the image, skid prediction information caused by the manhole cover or the crosswalk can be generated will. Since manhole covers and white lines tend to cause slippage, especially when it rains, rain can be an additional weather condition. When quicksand on the road is detected from the image, skid prediction information caused by quicksand can be generated. Because quicksand easily causes slippage, especially when the road surface is dry, the absence of rain or snowfall can be an additional weather condition. In the present embodiment, slip prediction information caused by manhole covers, pedestrian crossings, and quicksand is applied to a motorcycle, and is not applied to a four-wheeled vehicle. For example, for the slip prediction information, the priority of the cause of the slip is added, and when the cause of the slip prediction is a cause of the priority not greater than the predetermined priority, only one motorcycle needs to be set as the sending destination of the slip information. When the cause corresponding to the slip prediction cannot be specified, for example, a code that there is no slip prediction information is generated instead of the slip prediction information.

1. 1. Wenn der Rutschzustand detektiert wird, bestimmt die Steuereinheit 2111, dass Schlupf aufgetreten ist.
2. 2. Wenn die Motordrehzahl rapide ansteigt (eine vorbestimmte Anstiegsrate überschreitet), besteht eine Möglichkeit, dass das Fahrzeug 201 umgefallen ist und die Fahrlast reduziert ist, so dass die Motordrehzahl rapid angestiegen ist. In diesem Fall bestimmt die Steuereinheit 2111, dass Schlupf aufgetreten ist. Es genügt, dass, als die vorbestimmte Anstiegsrate, ein Wert ausgewählt wird, der die Anstiegsrate von normaler Drosselbetätigung überschreitet.
3. 3. Wenn detektiert wird, dass die lineare Beschleunigung oder die Winkelbeschleunigung den vorbestimmten Wert überschreitet, bestimmt die Steuereinheit 2111110, dass ein Schlupf aufgetreten ist. Jede der linearen Beschleunigung und der Winkelbeschleunigung kann bestimmt werden, indem die Beschleunigung oder die Winkelbeschleunigung jeder Achse synthetisiert und der Wert mit einem Schwellenwert verglichen wird.
4. 4. Wenn die Gierrate die Obergrenze der aus dem Lenkwinkel und der Geschwindigkeit vorhergesagten Gierrate überschreitet, kann die Steuereinheit 2111 bestimmen, dass ein Schlupf aufgetreten ist.
5. 5. Die Neigung um die Wankachse wird von einem Wankwinkelsensor gemessen, und die Steuereinheit 2111 kann das Auftreten von Schlupf bestimmen, wenn der Wert einen vorbestimmten Schwellenwert überschreitet. Da jeder Schräglagesensor 115 ein für ein Kraftrad besonderer Sensor ist, braucht diese Bestimmung nicht vorgenommen werden, wenn die empfangene Detektionsinformation von einem vierrädrigen Fahrzeug stammt.

In step S313, the occurrence of the slip is specified based on the state information, the cause of the slip is specified based on the external environment information, and slip presence information indicating the occurrence and the cause of the slip is generated (S313). In the present embodiment, the occurrence of slip is detected, for example, as follows.

1. 1. When the skid condition is detected, the control unit 2111 determines that a skid has occurred.
2. 2. When the engine speed increases rapidly (exceeds a predetermined rate of increase), there is a possibility that the vehicle 201 has fallen over and the running load is reduced, so that the engine speed has increased rapidly. In this case, the control unit 2111 determines that a slip has occurred. It suffices that, as the predetermined rate of increase, a value exceeding the rate of increase of normal throttle operation is selected.
3. 3. When it is detected that the linear acceleration or the angular acceleration exceeds the predetermined value, the control unit 2111110 determines that a slip has occurred. Each of the linear acceleration and the angular acceleration can be determined by synthesizing the acceleration or the angular acceleration of each axis and comparing the value with a threshold.
4. 4. When the yaw rate exceeds the upper limit of the yaw rate predicted from the steering angle and speed, the control unit 2111 may determine that a slip has occurred.
5. 5. The inclination about the roll axis is measured by a roll angle sensor and the control unit 2111 can determine the occurrence of slip when the value exceeds a predetermined threshold. Since each leaning sensor 115 is a sensor dedicated to a motorcycle, this determination need not be made when the received detection information is from a four-wheel vehicle.

Of course, these determinations are examples and can also be made based on other criteria.

If it is determined that slippage has occurred, the cause is further specified. The information indicating the cause is also included in the slip presence information. The cause of the slip can be specified in the same manner as step S311. If it is raining or snowing, this can be specified as the cause. In any case, it suffices that a cause most likely to induce slip is given high priority, the presence or absence of correspondence from the cause of high priority is sequentially determined, and when the cause is corresponding that the causes are specified can. However, there may also be a case where it is difficult to specify the cause even though slippage has actually occurred. Examples of such a case include a case of the vehicle-specific cause such as severe tire wear, a case where the external environment is difficult to detect such as a case of local quicksand which is a cause of slip. In this case, the cause could remain unknown without further specifying the cause. The priority of the cause described above may be determined in advance, and for example, a higher priority may be given in order of frozen road surface, snow cover, quicksand, manhole cover, crosswalk (white line), rain, wet road surface, and the like. For example, the priority can be related to determine a transmission target of the slip information, and the four-wheel vehicle can also be the transmission target of the slip information for the high priority, frozen road surface and snow cover, and only the motorcycle can be the transmission target for other information .

Thereafter, it is determined whether there is information to be stored (S315). When the slip presence information or the slip prediction information is generated, it is determined that there is information to be stored since the information is a storage target. On the other hand, when neither the slip prediction information nor the slip presence information can be generated, it is determined that there is no information to be stored. In this case, the process branches to step S315.

When there is information to be stored, position information is first acquired from the received detection information (S317). Then, the detected position information is stored as slip information in the storage unit 2112 of the server 211 in association with the generated slip presence information or slip prediction information. The date and time included in the detection information that is the source of the slip presence information or the slip prediction information, or the date and time when the slip information is generated is used as the generation date and time of the slip information to be stored assigned. Thereafter, in the stored slip information searches for slack information for which a predetermined time has elapsed from the associated creation date and time (S321), and deletes the corresponding slack information, if any (S323). Steps 321 and 323 need in the procedure of 3 not to be performed and can, for example, periodically synchronously with the procedure of 3 be performed.

- slip information

5 12 shows an example of a configuration of the slip information 50 stored in the storage unit 2112. The slip information includes a slip information record 52, which is a group of pieces of information generated in a single generation process of the slip presence information or the slip prediction information. The slip information record 52 is included in an area record group 51 grouped for each position where the slip that caused the generation of the slip information record 52 has occurred or for each position where the cause of the generation of the slip prediction information has been detected. The area represented by the area recording group 51 can be determined in advance. This can, for example, be assigned to the position of the antenna 210 which transmits the slip information. That is, the coverage of each antenna 210 can be determined as an area, and an area recording group 51 can be configured by slack information associated with a position included in the area.

Each slip information record 52 includes a slip/slip prediction field 521, a position information field 522, a cause information field 523, a creation date and time field 524, and a vehicle type field 525. The slip/slip prediction field 521 is a code indicating whether the information slip presence information or the slip prediction information. The position information field 522 is the position determined in step S317 in 3 is detected. The cause information field 523 is a field indicating the cause specified in step S311 or step S313. The creation date and time field 524 is a date and time when the slip presence information or the slip prediction information is created. The vehicle type field 525 is a transmission destination to which the slip presence information or the slip prediction information is sent, and is either a four-wheel vehicle or a motorcycle in this example. Alternatively, the vehicle type field 525 may also be the type of the transmission source vehicle of the detection information that caused the slip information record to be generated. In the latter case, the slip information generated from the detection information of the motorcycle is sent to the motorcycle, and the slip information generated from the detection information of the four-wheel vehicle is sent to the motorcycle and the four-wheel vehicle. When the transmission destination is determined based on the priority of the slip cause, a motorcycle or a four-wheel vehicle is set according to the priority. Also in this case, when a four-wheel vehicle is specified, a motorcycle can be set as the transmission destination. For example, the vehicle type 515 may be recorded during storage in step S319.

- slippage information ends

The slack information stored in the storage unit 2112 of the server 211 in the procedure of 3 is accumulated is transmitted to the vehicle passing through the coverage of the antenna 210 . The slip information offered in the vehicle is shared with the vehicle that receives the slip information. 4 FIG. 12 shows an example of a procedure in which the server 210 broadcasts to another vehicle. Incidentally, the sending of the slack information can also be performed according to a certain standard. For example, this can conform to a standard such as ITS. In such a standard, information such as time and position can be included as data frames of a basic message according to a standard. In this case, the information field included in the basic message can be sent according to the format, and for example, in the present embodiment, own slack information can be sent using a vacant data area.

In the process of 4 For example, the control unit 2111 sends slip information to another vehicle, for example, periodically via the antenna 210. However, if the slip information to be sent is changed according to the vehicle type, a notification sent from the vehicle is received and the slip information is sent according to the vehicle type contained therein.

In 4 slip information is first acquired according to the position information of the antenna 210 as a transmission source (S401). The position information is a slip information record included in the area record group of the area corresponding to the coverage of the antenna 210 serving as the transmission source. Then, with reference to the slip information 50 stored in the storage unit 2112, it is determined whether the slip information record 52 is included in the area record group 51 corresponding to the coverage of the antenna 210 (S403). If no recording is classified into the area recording group, it can The determination result of S403 is YES when the position information associated with the slip information record 52 belongs to the coverage of the antenna 210 . If there is a corresponding record, the process branches to step S405.

Then, it is determined whether broadcast should be performed or not (S404). In the case of periodic transmission, since the transmission destination is not specified, it is determined to be broadcast. On the other hand, if the message is transmitted in response to the message from the vehicle, since unicast transmission is performed for the vehicle for the vehicle, it is determined whether the transmission target vehicle is a motorcycle in relation to the type received in the received message or is a four-wheeled vehicle (S405). When it is determined that the vehicle type is a motorcycle, slip information indicating that the vehicle type in the corresponding area recording group is a motorcycle is sent (S407), and when it is determined that the vehicle type is not a motorcycle, slip information indicating is sent that the vehicle type is a four-wheel vehicle (S409). As described above, by changing the vehicle type of the transmission destination, for example, according to the cause of a slip, it is possible to efficiently share necessary information in terms of time and communication resources.

On the other hand, when broadcasting is determined in step S404, all slip information records of the area record group corresponding to the antenna 210 are broadcast regardless of the vehicle type (S411). As a result, the skid information can be offered to the vehicle running in the operational range of the antenna 410 .

slip information reception

The process in the receiving-side vehicle that receives the slip information will now be described. In the vehicle that has received the slip information sent from the server 211 in the procedure of 4 is sent, the process of the procedure of 6 accomplished. The receiving-side vehicle also has a configuration as in 1 shown, and the process unit 101 can process the 6 execute.

When the slack information is received from the server 211, the control unit 101 stores the slack information in the in, for example 5 shown format (S601). Position information is extracted from the stored slip information (S603). A mark indicating that the vehicle has skidded or is expected to skid is displayed on the user interface unit 160 at a position on the map corresponding to the extracted position ( S604 ). Here, with respect to the vehicle type 525, when the own vehicle is a motorcycle, slip information indicating that the vehicle type is a motorcycle or a four-wheel vehicle can be displayed, and when the own vehicle is a four-wheel vehicle, slip information can be displayed , indicating that the vehicle type is a four-wheel vehicle. In this case, not only the occurrence of the slip or the prediction of the slip can be indicated with a marking, but also the cause of the slip. When a record is received indicating the occurrence or prediction of multiple slips in an area, the occurrence or prediction as a whole is displayed. When the map is not currently displayed, the receipt of the slip information can be notified to the driver by a voice or the like.

If thereafter, as in steps S321 and S323 in 3 , there is a slip information record for which a predetermined time has elapsed from the generation (S607-YES), the slip information record is deleted (S609). This step can be performed asynchronously with the process up to step S605.

Effects According to the Invention of the Present Embodiment According to the above configuration and process procedure, it is possible to notify the vehicle that it is running in the vicinity of the place where the vehicle has slipped or the place where the vehicle may slip. As a result, the vehicle that has received the notification can warn the driver and prevent a skid accident in advance. The reporting target is divided into a motorcycle and a four-wheel vehicle according to the cause of slipping. As a result, a motorcycle which is more likely to cause slip than a four-wheel vehicle is informed of the position where slip has occurred and its cause, or the position where slip might occur and its cause, as a whole. On the other hand, for a four-wheel vehicle that is less likely to slip than a motorcycle, a notification focusing on the cause of the slip, which might be the cause of the four-wheel vehicle slipping, is given. Therefore, the driver who has received the notification can effectively share the information with others without downgrading the skid notification. Furthermore, the amount of information to be sent can be reduced and time and communication resources can be saved. In the above embodiment, the slip information notified to the four-wheel vehicle is part of the slip information notified to the motorcycle, but there may be slip information notified only to the four-wheel vehicle. In the case of broadcasting, the vehicle shows which has received the skid information, selectively displays the skid information corresponding to the type of the own vehicle to warn the driver. As a result, the driver can be prevented from becoming accustomed to the warning due to the display of the slip information which is unlikely to cause slip.

Different version

By specifying the position of the antenna 210 that has received the status information and the like from the vehicle as the skid-present position, the vehicle, which is the transmission source of the detection information, need not include the position information in the detection information. In this case, the server 211 that received the detection information can store the position information corresponding to the position of the antenna 210 in association with the slip information. In the above embodiment, the information indicating the vehicle type is added when the slip information is stored, but the transmission destination may be determined based on the cause when the slip information is transmitted, for example. In the above embodiment, the vehicle that transmits the detection information to the server 211 is a motorcycle, but it may be a four-wheel vehicle. However, in this case, it goes without saying that the slippage specific to the motorcycle, such as the banking angle, is not detected. If there is a camera that captures an image of a road near the antenna, the image captured by the camera can be used as the external environment information.

In the embodiment, the slip information is deleted after a certain period of time has elapsed, but the deletion target may be determined according to the cause of the slip. For example, if the cause is weather, the cause may be erased, but if the cause is road surface condition, the cause may not be transient. For example, since manhole covers, white lines, and quicksand are unlikely to disappear within a short period of time, slack information resulting from the manhole covers, white lines, and quicksand need not be erased even after a certain period of time has elapsed. However, since there is a possibility that slip prediction information is repeatedly generated every time information passes the same position, the slip prediction information might be deleted after a certain period of time has elapsed, regardless of the cause.

1. (1) Gemäß einem ersten Aspekt der vorliegenden Erfindung wird eine Informationsanbietungsvorrichtung angegeben, die dadurch gekennzeichnet ist, dass sie enthält: ein Empfangsmittel zum Empfangen von Detektionsinformation, die einen an einem Fahrzeug detektierten Zustand angibt, von dem Fahrzeug; ein Erzeugungsmittel, um, gemäß einem Typ des Fahrzeugs, basierend auf der Detektionsinformation, die empfangen worden ist, und Außenumgebungsinformation, die eine Außenumgebung angibt, Schlupfinformation zu erzeugen, die eine Möglichkeit angibt, dass das Fahrzeug schlupft; und ein Sendemittel zum Senden der Schlupfinformation zu dem Fahrzeug.

The above statements are summarized as follows:

1. (1) According to a first aspect of the present invention, there is provided an information offering apparatus characterized by including: receiving means for receiving detection information indicating a condition detected on a vehicle from the vehicle; generating means for generating, according to a type of the vehicle, based on the detection information that has been received and external environment information indicating an external environment, slip information indicating a possibility that the vehicle is slipping; and a transmission means for transmitting the slip information to the vehicle.

With this configuration, the vehicle can share the optimal slip information according to the type of vehicle.

(2) According to a second aspect of the present invention, there is provided the information offering apparatus according to (1), characterized in that the type of vehicle includes a motorcycle and a four-wheel vehicle; and the generating means generates, according to the type of the vehicle, slip information indicating a possibility of a slip due to a predetermined cause corresponding to the type of the vehicle.

With this configuration, by defining the type of vehicle by the number of wheels, it is possible to indicate appropriate information according to the target vehicle.

(3) According to a third aspect of the present invention, there is provided the information offering apparatus according to (1) or (2), characterized in that the generating means generates the slip information according to a type of vehicle that is a transmission source of the detection information from which the slip information is generated will.

With this configuration, it is possible to offer appropriate slip information at a place where there is a possibility of slip.

(4) According to a fourth aspect of the present invention, there is provided the information offering apparatus according to any one of (1) to (3), characterized in that the generating means is specified according to a behavior of a vehicle from a state of the vehicle included in the detection information , determines that a slip has occurred; and when it is determined that the slip has occurred, the generating means specifies a cause of the slip based on the external environment and the Slip information including slip and cause generated.

With this configuration, the cause of the skid can be specified from the outside environment and offered to the vehicle as skid information.

(5) According to a fifth aspect of the present invention, there is provided the information offering apparatus according to (4), characterized in that the state of the host vehicle includes wheel slip, engine speed, acceleration, side slip, and banking angle; and the generating means determines that the vehicle has slipped based on at least one of the wheel slip conditions, the engine speed, the acceleration, the sideslip and the banking angle.

According to the present invention, it is possible to detect the slip with high accuracy based on the vehicle behavior.

(6) According to a sixth aspect of the present invention, there is provided the information offering device according to any one of (1) to (5), characterized in that the receiving means also receives the external environmental information of the vehicle, the external environmental information including a temperature and an external image, and the generating means specifies the cause of the slip based on the temperature and/or the external image.

With this configuration, when a slip occurs, the cause can be specified and the information can be shared between the vehicles.

(7) According to a seventh aspect of the present invention, there is provided the information offering apparatus according to (6), characterized in that the generating means calculates a road surface condition including at least one of quicksand, wetness, drain cover, white line, freezing and snow cover as the outside environment from the temperature and specified on the outside image.

With this configuration, it is possible to estimate the slip information from the outside and share the slip information between the vehicles.

(8) According to an eighth aspect of the present invention, there is provided the information offering apparatus according to any one of (1) to (7), characterized in that the generating means predicts a slip based on the external environment information and generates the slip information based on the prediction.

With this configuration, even if slip does not actually occur, the slip possibility can be predicted and shared between the vehicles.

(9) According to a ninth aspect of the present invention, there is provided the information offering device according to any one of (1) to (8), characterized in that the external environment information includes a temperature and an external image; and the generating means specifies the cause of the slip based on the temperature and/or the external image or predicts the slip to specify the cause and generates the slip information including the slip, prediction of the slip and the cause.

With this configuration, by estimating the slip information from the external environment information, it is possible to specify a cause with high accuracy and to share the cause.

(10) According to a tenth aspect of the present invention, there is provided an information sharing system including: the information offering apparatus according to any one of (1) to (9); and a vehicle including display means for receiving the slip information and displaying slip information including a type of vehicle corresponding to a type of own vehicle corresponding to an area on a map under the received slip information.

With this configuration, it is possible to offer the optimal slip information to the vehicle according to the type of the vehicle.

According to an eleventh aspect of the present invention, there is provided a program for causing a computer to function as the information offering device according to any one of (1) to (9).

With this configuration, it is possible to offer the optimal slip information to the vehicle according to the type of the vehicle.

(12) According to a twelfth aspect of the present invention, there is provided an information offering method characterized by including: receiving detection information indicating a condition detected on a vehicle from the vehicle; generating, according to a type of the vehicle, slip information indicating a possibility that the vehicle will slip based on the detection tion information that has been received and external environment information indicating an external environment; and sending the slip information to the vehicle.

With this configuration, it becomes possible to offer the optimal slip information to the vehicle according to the type of the vehicle.

The present invention is not limited to the above embodiments, and various changes and modifications can be made within the spirit and scope of the present invention. Therefore, to apprise the public of the scope of the present invention the following claims are made.

Claims (12)

Information offering apparatus characterized by comprising: receiving means for receiving, from the vehicle, detection information indicating a condition detected by a vehicle; generating means for generating, according to a type of the vehicle, based on the detection information that has been received and external environment information indicating an external environment, slip information indicating a possibility that the vehicle is slipping; and a transmission means for transmitting the slip information to the vehicle. The information offering device according to claim 1 , characterized in that the type of vehicle includes a motorcycle and a four-wheeled vehicle, and the generating means generates, according to the type of vehicle, slip information indicating a possibility of slip due to a predetermined cause corresponding to the type of vehicle. The information offering device according to claim 1 , characterized in that the generating means generates the slip information according to a type of vehicle which is a transmission source of the detection information from which the slip information is generated. The information offering device according to any one of Claims 1 until 3 , characterized in that the generating means, according to a behavior of a vehicle specified from a state of the vehicle included in the detection information, determines that a skid has occurred, and when it is determined that the skid has occurred, the generating means a cause of the slip based on the external environment and generates the slip information including the slip and the cause. The information offering device according to claim 4 , characterized in that the state of the own vehicle includes a wheel slip, an engine speed, acceleration, side-slip and a bank angle, and the generating means based on at least one of the states of the wheel slip, the engine speed, the acceleration, the side-slip and the Bank angle determines that the vehicle has slipped. The information offering device according to any one of Claims 1 until 5 , characterized in that the receiving means also receives the external environment information from the vehicle, the external environment information including a temperature and an external image, and the generating means specifies the cause of the slip based on the temperature and/or the external image. The information offering device according to claim 6 , characterized in that the generating means specifies a road surface condition including at least one of quicksand, wetness, manhole cover, white line, freezing and snow cover as the outside environment from the temperature and the outside image. The information offering device according to any one of Claims 1 until 7 , characterized in that the generating means predicts a slip based on the external environment information and generates the slip information based on the prediction. The information offering device according to any one of Claims 1 until 8th , characterized in that the external environment information includes a temperature and an external image, and the generating means specifies the cause of the slip based on the temperature and/or the external image or predicts the slip to specify the cause, and the slip information including the slip, prediction of the slip and the cause generated. An information offering system comprising: the information offering device according to any one of Claims 1 until 9 ; and a vehicle including a display means for receiving the slip information and corresponding according to an area on a map under the received skid information, such skid information including a type of vehicle corresponding to a type of own vehicle. A program for causing a computer to function as the information offering device according to any one of Claims 1 until 9 acts. Information offering method, characterized by comprising: receiving, from the vehicle, detection information indicating a condition detected on a vehicle; generating, according to a type of the vehicle, slip information indicating a possibility that the vehicle will slip based on the detection information that has been received and external environment information indicating an external environment; and sending the slip information to the vehicle.

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