JP4893611B2 - Alarm device - Google Patents

Description

  The present invention relates to an alarm device that is mounted on a vehicle and outputs warning information.

There is known an alarm device that is mounted on a vehicle and outputs warning information to a driver of the vehicle when the degree of danger according to the probability that the state of the vehicle is in a dangerous state is relatively high. As one of this type of alarm device, the alarm device described in Patent Document 1 receives dangerous position information representing a position having a relatively high degree of danger from a server device. Further, the alarm device acquires vehicle position information indicating the current position of the vehicle. Then, the alarm device outputs warning information when the current vehicle position is in the vicinity of a relatively high risk position based on the received dangerous position information and the acquired vehicle position information (for example, a display) Display a warning message).
JP 2003-157002 A

  By the way, depending on the nature (steering performance, braking performance, etc.) of the vehicle on which the alarm device is installed and the nature of the driver (driving skill level, health condition, etc.) driving the vehicle, the state of the vehicle is dangerous (That is, the driver can avoid the vehicle from the danger target) (the danger avoidance possibility) is different. In addition, the higher the level of the driving skill of the driver, the less warning information the driver needs to avoid the vehicle from the danger target. Therefore, when the driver's driving skill level is relatively high, unnecessary warning information may be output, which may reduce the driver's attention and make the driver feel uncomfortable. It was. On the other hand, when the level of the driving skill of the driver is relatively low, there is a possibility that the warning information to be output is insufficient with respect to information necessary for the driver to avoid the vehicle from the danger target.

  However, the alarm device described in Patent Document 1 outputs warning information when a certain condition is satisfied regardless of the high risk avoidance possibility. Therefore, excessive warning information may be output for a driver with a relatively high driving skill level, or warning information may be insufficient for a driver with a low driving skill level. As a result, there is a possibility that the driver cannot avoid the vehicle from the danger target.

  For this reason, an object of the present invention is to provide an alarm device capable of solving the above-described problem “when excessive warning information is output or when there is a shortage of output warning information”. There is.

In order to achieve such an object, an alarm device according to one embodiment of the present invention is a device that is mounted on a vehicle and outputs warning information.
Furthermore, this alarm device
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Danger avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver;
The warning is based on the risk information indicating the risk according to the probability of the vehicle being in a dangerous state depending on the environment of the road on which the vehicle travels, and the input risk avoidance possibility information. Warning information output control means for controlling the output of information;
Is provided.

An alarm system according to another embodiment of the present invention is a system including an alarm device that is mounted on a vehicle and outputs warning information, and a server device that can communicate with the alarm device.
In addition, this alarm system
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. A risk avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver is provided.
In addition, the alarm device comprises:
Vehicle position information acquisition means for acquiring vehicle position information representing the position of the vehicle;
A risk request information transmitting means for transmitting risk request information including the acquired vehicle position information to the server device;
Is provided.
Furthermore, the server device
Risk level information for acquiring risk level information indicating a risk level corresponding to a probability that the vehicle state is in a dangerous state depending on an environment of a road on which the vehicle travels based on the risk level request information from the alarm device Acquisition means;
A risk information transmitting means for transmitting the acquired risk information to the alarm device;
Is provided.
In addition, the alarm device comprises:
Warning information output control means for controlling the output of the warning information based on the risk information from the server device and the input risk avoidance possibility information is provided.

An alarm control method according to another embodiment of the present invention is a method for controlling an alarm device that is mounted on a vehicle and outputs warning information.
This alarm control method
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. A risk avoidance possibility information input step of inputting avoidance possibility information based on the input operation of the driver;
The warning is based on the risk information indicating the risk according to the probability of the vehicle being in a dangerous state depending on the environment of the road on which the vehicle travels, and the input risk avoidance possibility information. A warning information output control process for controlling the output of information;
including.

Moreover, the program which is the other form of this invention is:
In an alarm device that is mounted on a vehicle and outputs warning information,
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Danger avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver;
The warning is based on the risk information indicating the risk according to the probability of the vehicle being in a dangerous state depending on the environment of the road on which the vehicle travels, and the input risk avoidance possibility information. Warning information output control means for controlling the output of information;
It is a program for realizing.

  By configuring as described above, the present invention can suppress the output of excessive warning information when the risk avoidance is high, and output when the risk avoidance is low. Insufficient warning information can be avoided.

An alarm device according to an embodiment of the present invention is a device that is mounted on a vehicle and outputs warning information.
This alarm device
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Danger avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver;
The warning is based on the risk information indicating the risk according to the probability of the vehicle being in a dangerous state depending on the environment of the road on which the vehicle travels, and the input risk avoidance possibility information. Warning information output control means for controlling the output of information.

  In this case, the warning information output control means permits the output of the warning information when the risk level indicated by the risk level information is higher than a predetermined threshold level risk level, while the risk level is higher than the threshold level risk level. It is preferable that the output of the warning information is prohibited when the value is low.

  In addition, in this case, the warning information output control means may be configured to set the threshold risk level to a value that decreases as the risk avoidance possibility represented by the input risk avoidance possibility information decreases. Is preferred.

  According to this, the warning information becomes easier to output as the danger avoidance possibility represented by the inputted danger avoidance possibility information becomes lower. Therefore, it is possible to suppress the output of excessive warning information when the risk avoidance possibility is high, and to avoid the shortage of warning information output when the risk avoidance possibility is low. Can do.

  In this case, the parameter is at least one of the level of the driving skill of the driver, the length of the driving experience of the driver, the health condition of the driver, the weather condition, and the vehicle type of the vehicle. It is preferable that

  The level of the driving skill of the driver, the length of the driving experience of the driver, the health condition or the weather condition of the driver has a strong correlation with the risk avoidance possibility. Further, the vehicle steering performance and the vehicle braking performance are specified by the vehicle type. The steering performance of the vehicle and the braking performance of the vehicle also have a strong correlation with the possibility of danger avoidance. Therefore, according to the above configuration, the risk avoidance possibility represented by the risk avoidance possibility information can be brought close to the actual risk avoidance possibility.

In this case, the alarm device
Vehicle position information acquisition means for acquiring vehicle position information representing the position of the vehicle;
A degree-of-risk request information transmitting means for transmitting the degree-of-risk request information including the acquired vehicle position information to the server device;
A degree-of-risk information receiving means for receiving from the server device the degree-of-risk information according to the vehicle position information included in the degree-of-risk request information;
With
The warning information output control means is preferably configured to control the output of the warning information based on the received risk level information and the input risk avoidance possibility information.

  According to this, the alarm device receives the risk information from the server device, and outputs the warning information based on the received risk information. As a result, even when a vehicle having a high risk level has not yet traveled, if the server apparatus has risk level information indicating that the risk level of the position is high, The driver who drives the vehicle can recognize the position as a position with a high risk level based on the output warning information. As a result, it is possible to increase the possibility that the driver avoids the vehicle from the danger target.

Furthermore, in this case, the alarm device is
A risk index value detecting means for detecting a risk index value according to the mental state of the driver;
The detected risk index value includes the acquired vehicle position information when the detected risk index value is within a predetermined range including the risk index value detected when the vehicle state becomes the dangerous state. It is preferable to include dangerous position information transmitting means for transmitting dangerous position information to the server device as information that is the basis of the risk information.

  The driver's mental state well represents whether or not the state of the vehicle is close to a dangerous state. Therefore, according to the above configuration, the risk level represented by the risk level information can be brought close to the actual risk level. Furthermore, the dangerous position information can be sent to the server device by a plurality of alarm devices. Thereby, the server apparatus can acquire risk level information based on more dangerous position information. Therefore, the risk level represented by the risk level information can be made closer to the actual risk level.

  Further, in this case, the risk information is within a predetermined area including the position of the vehicle represented by the vehicle position information included in the risk request information among the dangerous position information received by the server device. It is preferable that the information represents the number of dangerous position information indicating the position.

  An area including more positions represented by the dangerous position information has a higher degree of danger. Therefore, the number of dangerous position information representing the position in a predetermined area including the position of the vehicle in the dangerous position information well represents the degree of danger. Therefore, according to the said structure, alarm information can be output appropriately.

  Further, in an alarm device that outputs warning information based on each dangerous position information, if there are a large number of positions indicated by the dangerous position information in a relatively narrow area, an excessive amount of warning information may be output. There is. On the other hand, according to the above configuration, even in such a case, it is possible to avoid outputting too much warning information.

  Further, in this case, the risk level information is a time point a predetermined time before the time point when the vehicle position information included in the risk level request information is acquired from the risk position information received by the server device. It is preferable that the information is based on the risk position information sent to the server device based on the detected risk index value until.

  According to this, even when there is a position where the actual risk level has increased once and then decreased, alarm information can be appropriately output according to the risk level when the vehicle approaches that position. Can do.

On the other hand, in another embodiment of the alarm device according to the present invention, the alarm device comprises:
Vehicle position information acquisition means for acquiring vehicle position information representing the position of the vehicle;
A risk index value detecting means for detecting a risk index value according to the mental state of the driver;
The detected risk index value includes the acquired vehicle position information when the detected risk index value is within a predetermined range including the risk index value detected when the vehicle state becomes the dangerous state. Dangerous position information storage means for storing dangerous position information;
A risk information acquisition means for acquiring the risk information based on the stored risk position information and the acquired vehicle position information;
With
The warning information output control means is preferably configured to control the output of the warning information based on the acquired risk information and the input risk avoidance possibility information. .

  Furthermore, in this case, the risk level information includes dangerous position information indicating a position in a predetermined area including the position of the vehicle represented by the acquired vehicle position information, out of the stored dangerous position information. It is preferable that the information represents a number.

  Further, in this case, the risk level information includes the risk level detected during a predetermined time period from the time when the vehicle position information is acquired in the stored risk position information. It is preferable that the information is based on the stored risk position information based on the index value.

  Further, the warning information output control means of any of the alarm devices is configured to output the warning information at a timing that becomes earlier as the risk avoidance possibility represented by the input risk avoidance possibility information becomes lower. Is preferable.

  According to this, when the risk avoidance possibility is relatively low, warning information is output at a relatively early timing. Thereby, for example, when there is a danger target ahead of the traveling direction of the vehicle, the driver performs an operation for avoiding the vehicle from the danger target and confirmation of the danger target at a relatively early timing. be able to. As a result, even when the risk avoidance possibility is relatively low, it is possible to increase the possibility that the vehicle state can be avoided from becoming a dangerous state.

An alarm system according to another embodiment of the present invention is a system including an alarm device that is mounted on a vehicle and outputs warning information, and a server device that can communicate with the alarm device.
This alarm system
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. A risk avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver is provided.
Furthermore, the alarm device comprises:
Vehicle position information acquisition means for acquiring vehicle position information representing the position of the vehicle;
A risk request information transmitting means for transmitting risk request information including the acquired vehicle position information to the server device;
Is provided.
In addition, the server device
Risk level information for acquiring risk level information indicating a risk level corresponding to a probability that the vehicle state is in a dangerous state depending on an environment of a road on which the vehicle travels based on the risk level request information from the alarm device Acquisition means;
A risk information transmitting means for transmitting the acquired risk information to the alarm device;
Is provided.
Furthermore, the alarm device comprises:
Warning information output control means for controlling the output of the warning information based on the risk information from the server device and the input risk avoidance possibility information is provided.

  Further, in this case, the warning information output control means permits the warning information to be output when the risk level indicated by the risk level information is higher than a predetermined threshold level risk level. It is preferable that the output of the warning information is prohibited when the temperature is lower than the degree.

  In addition, in this case, the warning information output control means may be configured to set the threshold risk level to a value that decreases as the risk avoidance possibility represented by the input risk avoidance possibility information decreases. Is preferred.

An alarm control method according to another embodiment of the present invention is a method for controlling an alarm device that is mounted on a vehicle and outputs warning information.
This warning device control method is
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. A risk avoidance possibility information input step of inputting avoidance possibility information based on the input operation of the driver;
The warning is based on the risk information indicating the risk according to the probability of the vehicle being in a dangerous state depending on the environment of the road on which the vehicle travels, and the input risk avoidance possibility information. A warning information output control step for controlling the output of information.

  In this case, the warning information output control step permits the output of the warning information when the risk level represented by the risk level information is higher than a predetermined threshold level risk level, while the risk level is higher than the threshold level risk level. It is preferable that the output of the warning information is prohibited when the value is low.

  Further, in this case, the warning information output control means is preferably configured to set the threshold risk level to a value that decreases as the risk avoidance possibility represented by the input risk avoidance possibility information decreases. It is.

Moreover, the program which is the other form of this invention is:
In an alarm device that is mounted on a vehicle and outputs warning information,
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Danger avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver;
The warning is based on the risk information indicating the risk according to the probability of the vehicle being in a dangerous state depending on the environment of the road on which the vehicle travels, and the input risk avoidance possibility information. Warning information output control means for controlling the output of information;
It is a program for realizing.

  In this case, the warning information output control means permits the output of the warning information when the risk level indicated by the risk level information is higher than a predetermined threshold level risk level, while the risk level is higher than the threshold level risk level. It is preferable that the output of the warning information is prohibited when the value is low.

  Further, in this case, the warning information output control means is preferably configured to set the threshold risk level to a value that decreases as the risk avoidance possibility represented by the input risk avoidance possibility information decreases. It is.

  Even the invention of the alarm system, the alarm control method, or the program having the above-described configuration can achieve the above-described object of the present invention because it has the same operation as the alarm device.

  Hereinafter, embodiments of an alarm device, an alarm device that executes a program, and an alarm system using an alarm control method according to the present invention will be described with reference to FIGS.

<First Embodiment>
As shown in FIG. 1, the car navigation system (alarm system) 1 according to the first embodiment includes a car navigation device (alarm device) 10 and a server device 20.

  The car navigation device 10 is mounted on a four-wheel automobile (vehicle) CA. The car navigation device 10 includes a CPU, a memory, and a hard disk device (HDD) not shown.

Furthermore, the car navigation apparatus 10 includes a display output unit 10a having a touch panel display and an audio output unit 10b having a speaker.
The display output unit 10a displays an image based on image information from the CPU on the display. The display output unit 10a is configured to display an image displayed when an operator (driver DR in this example) touches the display at a certain position in the image displayed on the display (the operator performs an input operation). Operation input information corresponding to the position touched by the operator is sent to the CPU.
The audio output unit 10b outputs audio based on audio information from the CPU from a speaker.

The car navigation device 10 includes a sweat sensor 11 and a sphygmomanometer 12. The perspiration sensor 11 and the sphygmomanometer 12 constitute a risk index value detection unit.
The perspiration sensor 11 detects the perspiration amount of the driver DR based on the relationship between the perspiration amount and the resistance value of the skin surface, and the resistance value of the skin surface of the driver DR who drives the vehicle CA (for example, see Japanese Patent Application Laid-Open Publication No. 2005-208867 2003-210426 publication). The relationship between the sweating amount and the resistance value of the skin surface is a relationship obtained in advance based on experimentally measured values.

The sphygmomanometer 12 detects the blood pressure and heart rate of the driver DR.
By the way, as the state of the vehicle CA approaches a dangerous state, the amount of sweat of the driver DR increases, the blood pressure of the driver DR increases, and the heart rate of the driver DR increases. Therefore, it can be said that each of the sweating amount of the driver DR, the blood pressure of the driver DR, and the heart rate of the driver DR is a value according to the mental state of the driver DR. The amount of sweat, blood pressure, and heart rate constitute a risk index value.

  Furthermore, the car navigation apparatus 10 is connected to a vehicle speed sensor 13 provided in the vehicle CA. The vehicle speed sensor 13 detects a vehicle speed that is the speed of the vehicle CA.

  In addition, the car navigation apparatus 10 includes a communication antenna and a GPS antenna (not shown). The car navigation device 10 transmits information to the server device 20 and receives information from the server device 20 via the communication antenna. Furthermore, the car navigation apparatus 10 receives GPS signals from a plurality of GPS satellites (not shown) via a GPS antenna.

  The server device 20 includes a CPU, memory, and HDD (not shown). The server device 20 is connected to a communication antenna (not shown), and transmits information to the car navigation device 10 and receives information from the car navigation device 10 via the communication antenna.

  FIG. 2 is a block diagram showing functions of the car navigation system 1 configured as described above. This function is executed by the CPU of the car navigation device 10 executing programs and the like represented by the flowcharts shown in FIGS. 8 to 10 described later, and the CPU of the server device 20 is expressed by the flowchart shown in FIG. 11 described later. This is realized by executing a program or the like.

  The functions of the car navigation device 10 are a vehicle position information acquisition unit (vehicle position information acquisition means) 31, a road map information storage unit 32, a destination setting unit 33, a route guidance information acquisition unit 34, and route guidance information. An output unit 35, a risk avoidance possibility information input unit (danger avoidance possibility information input unit) 36, a dangerous position information transmission unit (dangerous position information transmission unit) 37, and a risk level request information transmission unit (risk level request information) (Transmission means) 38, risk information receiving section (risk degree information receiving means) 39, warning information output control section (warning information output control means) 40, and warning information output section 41.

  The vehicle position information acquisition unit 31 acquires GPS information based on the GPS signal received via the GPS antenna (by demodulating the GPS signal). Further, the vehicle position information acquisition unit 31 generates (acquires) vehicle position information (in this example, latitude information indicating latitude and longitude information indicating longitude) indicating the position of the vehicle CA based on the acquired GPS information. The vehicle position information acquisition unit 31 stores the generated vehicle position information and reception time information indicating the time (reception time) when the GPS signal that is the basis of the vehicle position information is received.

The road map information storage unit 32 stores road map information representing a road map in advance.
The destination setting unit 33 is an image for the operator to input destination information indicating the position of the destination and search condition information indicating a condition for searching for a route, and a road map information storage unit 32 displays an image including a road map based on the road map information stored in the display output unit 10a. The destination setting unit 33 sends destination information and search condition information corresponding to the operation input information input by the operator to the route guidance information acquisition unit 34.

  When the operation input information indicating that the start of the route search is instructed is input, the route guidance information acquisition unit 34 displays the route from the current vehicle position to the destination position under the search condition, and the road map. The guide route is determined by searching based on the road map information stored in the information storage unit 32. Here, the “search condition” is a condition represented by the search condition information from the destination setting unit 33, and the “current vehicle position” is represented by the vehicle position information stored in the vehicle position information acquisition unit 31. The “destination position” is a position represented by the destination information from the destination setting unit 33. The search condition is, for example, a condition that makes the distance the shortest or a condition that makes the required time the shortest.

  The route guidance information acquisition unit 34 generates route guidance information based on the determined guidance route. Here, the route guidance information includes voice information representing voice and image information representing an image. The route guidance information acquisition unit 34 sends the generated route guidance information to the route guidance information output unit 35.

  The route guidance information output unit 35 outputs the voice represented by the voice information included in the route guidance information from the route guidance information acquisition unit 34 from the speaker of the voice output unit 10b at a predetermined timing. Furthermore, the route guidance information output unit 35 displays an image represented by the image information included in the route guidance information from the route guidance information acquisition unit 34 on the display of the display output unit 10a at a predetermined timing.

  The risk avoidance possibility information input unit 36 displays and outputs a risk avoidance possibility information input image including five input fields and an input completion button for the operator to input risk avoidance possibility information indicating the risk avoidance possibility. It is displayed on the display of the unit 10a. Here, the danger avoidance possibility is that the state of the vehicle CA becomes a dangerous state (the vehicle CA comes into contact (or collides) with an obstacle (for example, a pedestrian, another vehicle, and a falling rock), or the vehicle. This is a possibility that the state of the CA becomes uncontrollable (for example, the state where the vehicle CA is slipping) can be avoided (that is, the driver DR can avoid the vehicle CA from the danger target). .

  In this example, the risk avoidance information includes the driver's driving skill level (driving skill level), the driving experience level as the length of the driver's driving experience, the physical condition level as the driver's health, weather It is information representing the weather as a state and the vehicle type (vehicle type) of the vehicle.

  It can be said that the driving skill level, the driving experience level, and the physical condition level are parameters representing the characteristics of the driver DR. Further, the steering performance of the vehicle and the braking performance of the vehicle are specified by the vehicle type. The steering performance of the vehicle and the braking performance of the vehicle represent the characteristics of the vehicle CA. That is, it can be said that the vehicle type is a parameter representing the nature of the vehicle CA.

  In addition, the driving skill level, the driving experience level, the physical condition level, and the vehicle type have a strong correlation with the risk avoidance possibility. Weather also affects the driver's DR field of view, the braking force of the vehicle CA, and the like, and thus has a strong correlation with the possibility of danger avoidance. That is, the driving skill level, the driving experience level, the physical condition level, the weather, and the vehicle type are parameters that affect the risk avoidance possibility.

The first input field of the danger avoidance possibility information input image is a list of preset driving skill levels (in this example, “high”, “medium” and “low”) as shown in FIG. , And an input field in which only one driving skill level can be selected from the list.
The second input field is a list of preset years of operation experience (in this example, “less than 1 year”, “1 to 3 years”, and “3 years or more”) as shown in FIG. , And an input field in which only one year of driving experience level can be selected from the list.
The third input field shows a list of preset physical condition levels (in this example, “good”, “normal”, and “bad”) as shown in FIG. 5, and from the list This is an input field in which only one physical condition level can be selected.
The fourth input field shows a list of preset weather (in this example, “sunny”, “cloudy”, “rain” and “snow”) as shown in FIG. 6, and the list This is an input field in which only one weather can be selected.
The fifth input field shows a list of preset vehicle types (in this example, “TA”, “TB”, “TC”, and “TD”) as shown in FIG. 7, and the list This is an input field in which only one vehicle type can be selected.

  The danger avoidance possibility information input unit 36 switches the input field to be input according to the operation input information and receives the input operation input information. Then, when the operation input information (input completion information) indicating that the input is completed is input by the operator touching the input completion button, the danger avoidance possibility information input unit 36 inputs the operation that has been input so far. Based on the input information, danger avoidance information representing the selected driving skill level, driving experience level, physical condition level, weather and vehicle type is generated (acquired). That is, the danger avoidance possibility information input unit 36 inputs danger avoidance possibility information based on the input operation of the operator. Next, the risk avoidance possibility information input unit 36 sends the input risk avoidance possibility information to the warning information output control unit 40.

  The dangerous position information transmission unit 37 passes the sweating amount detected by the sweating sensor 11 and the blood pressure and heart rate detected by the sphygmomanometer 12 at a predetermined detection interval (0.01 seconds in this example). Get every time. When the vehicle speed detected by the vehicle speed sensor 13 is higher than the threshold vehicle speed and the predetermined dangerous position detection condition is satisfied, the dangerous position information transmission unit 37 stores the vehicle position information acquisition unit 31. The dangerous position information including the current vehicle position information and the reception time information is transmitted to the server device 20. Here, the dangerous position detection condition is a condition that all of the following first to third conditions are satisfied.

  The first condition is a condition that the acquired sweating amount is larger than a predetermined threshold sweating amount. The second condition is a condition that the acquired blood pressure is higher than a predetermined threshold blood pressure. The third condition is a condition that the acquired heart rate is higher than a predetermined threshold heart rate.

  The risk level request information transmission unit 38 includes the vehicle position information and the reception time information stored in the vehicle position information acquisition unit 31 every time a predetermined request interval (in this example, 10 seconds) elapses, and the risk level The risk level request information indicating that the transmission of information is requested is transmitted to the server device 20.

  The risk information receiving unit 39 receives the risk information from the server device 20. Here, the risk level information is information representing a risk level corresponding to the probability that the state of the vehicle CA becomes a dangerous state depending on the environment of the road on which the vehicle CA travels (in this example, the higher the probability, the higher). It is. The risk information receiving unit 39 sends the received risk information to the warning information output control unit 40.

  The warning information output control unit 40 calculates (acquires) the threshold risk degree based on the risk avoidance possibility information from the risk avoidance possibility information input unit 36 and the tables shown in FIGS.

  Specifically, the warning information output control unit 40 acquires the first threshold change amount based on the driving skill level represented by the risk avoidance possibility information and the driving skill level table shown in FIG. Here, the driving skill level table is a table that defines the relationship between the driving skill level and the threshold change amount.

  By the way, the lower the driving skill level, the lower the risk avoidance possibility. Therefore, this driving skill level table is set so that the threshold change amount decreases (changes in the negative direction) as the driving skill level changes in the order of “high”, “medium”, and “low”. .

  Furthermore, the warning information output control unit 40 acquires the second threshold change amount based on the driving experience years level represented by the risk avoidance possibility information and the driving experience years level table shown in FIG. Here, the driving experience years level table is a table that defines the relationship between the driving experience years level and the threshold change amount.

  By the way, a driver with a shorter driving experience has a lower possibility of being able to recognize a dangerous object at an early stage, and therefore, the possibility of danger avoidance is lower. Therefore, in this driving experience years level table, as the driving experience years level changes in the order of “less than 1 year”, “1 to 3 years”, and “3 years or more”, the threshold change amount increases (positive direction). To change).

  In addition, the warning information output control unit 40 acquires the third threshold change amount based on the physical condition level represented by the risk avoidance possibility information and the physical condition level table shown in FIG. Here, the physical condition level table is a table that defines the relationship between the physical condition level and the threshold change amount.

  By the way, a driver with a poor physical condition has a lower possibility of being able to recognize a dangerous object at an early stage. Therefore, the physical condition level table is set so that the threshold change amount decreases (changes in the negative direction) as the physical condition level changes in the order of “good”, “normal”, and “bad”.

  Further, the warning information output control unit 40 acquires the fourth threshold change amount based on the weather represented by the danger avoidance possibility information and the weather table shown in FIG. Here, the weather table is a table that defines the relationship between the weather and the threshold change amount.

  By the way, the worse the weather, the worse the driver's field of view and the slippery road surface, so the danger avoidance potential decreases. Therefore, this weather table is set so that the threshold change amount decreases (changes in the negative direction) as the weather changes in the order of “sunny”, “cloudy”, “rain”, and “snow”. .

  In addition, the warning information output control unit 40 acquires the fifth threshold change amount based on the vehicle type represented by the risk avoidance possibility information and the vehicle type table shown in FIG. Here, the vehicle type table is a table that defines the relationship between the vehicle type and the threshold change amount. “TA” is a vehicle type that represents a small passenger car, “TB” is a vehicle type that represents a medium-sized passenger car, “TC” is a vehicle type that represents a medium-sized truck, and “TD” is a vehicle type that represents a large truck.

  As the vehicle becomes heavier, the braking performance of the vehicle and the steering performance of the vehicle decrease. Furthermore, the braking performance of the vehicle and the steering performance of the vehicle decrease as the size of the vehicle increases. The lower the braking performance of the vehicle and the steering performance of the vehicle, the lower the risk avoidance possibility. Therefore, this vehicle type table is set so that the threshold change amount decreases (changes in the negative direction) as the vehicle type changes in the order of “TA”, “TB”, “TC”, and “TD”. .

  Then, the warning information output control unit 40 adds all of the acquired first threshold change amount to fifth threshold change amount to the threshold risk reference value (in this example, “100”), thereby generating a threshold risk. Calculate (acquire) degree. That is, the warning information output control unit 40 sets the threshold risk level to a value that decreases as the risk avoidance possibility represented by the input risk avoidance possibility information decreases. Next, the warning information output control unit 40 stores threshold risk information indicating the acquired threshold risk.

  The warning information output control unit 40 receives the risk information from the risk information receiving unit 39. Then, the warning information output control unit 40 includes warning image information and warning voice information when the risk level indicated by the received risk level information is higher than the threshold level risk level indicated by the stored threshold level risk level information. The warning information is sent to the warning information output unit 41 (that is, output of warning information is permitted).

On the other hand, the warning information output control unit 40 does not send the warning information to the warning information output unit 41 when the risk represented by the received risk information is lower than the threshold risk represented by the stored threshold risk information. (In other words, output of warning information is prohibited).
The threshold risk level information is information obtained based on the risk avoidance possibility information. Therefore, it can be said that the warning information output control unit 40 controls the output of the warning information based on the risk level information and the risk avoidance possibility information.

  The warning information output unit 41 receives warning information from the warning information output control unit 40. Then, the warning information output unit 41 outputs the voice represented by the warning voice information included in the received warning information from the speaker of the voice output unit 10b. Further, the warning information output unit 41 displays an image represented by the warning image information included in the warning information on the display of the display output unit 10a.

  Furthermore, the functions of the server device 20 are a dangerous position information storage unit 51, a risk level request information receiving unit 52, a risk level information acquiring unit (risk level information acquiring unit) 53, and a risk level information transmitting unit (risk level information). Transmission means) 54.

The dangerous position information storage unit 51 newly stores (accumulates) the dangerous position information from the dangerous position information transmission unit 37.
The risk request information receiving unit 52 sends the risk request information from the risk request information transmitting unit 38 to the risk information acquiring unit 53.

  Based on the vehicle position information and the reception time information included in the risk level request information from the risk level request information receiving unit 52, the risk level information acquiring unit 53 is based on the risk position information stored in the risk position information storage unit 51. The dangerous position information satisfying the extraction condition is extracted as the nearby dangerous position information. Here, the extraction condition is a condition that both the fourth condition and the fifth condition are satisfied.

  The fourth condition is that a position represented by the vehicle position information included in the dangerous position information is a predetermined area including the position of the vehicle represented by the vehicle position information included in the risk request information (in this example, the risk request information includes This is a condition that the position is within a 200 m square area centered on the position of the vehicle represented by the included vehicle position information. The fifth condition is that the time indicated by the reception time information included in the dangerous position information (the point in time when the risk index value related to the dangerous position information is detected (a point in the immediate vicinity thereof) is included in the risk request information. A condition that it is a time from a reception time represented by the received reception time information (a point in time when the vehicle position information included in the risk request information is acquired) to a point before a predetermined time (in this example, two hours) It is.

The risk level information acquisition unit 53 sends information indicating the number of extracted nearby dangerous position information to the risk level information transmission unit 54 as risk level information.
The risk information transmission unit 54 transmits the risk information from the risk information acquisition unit 53 to the risk information reception unit 39.

Next, the operation of the above-described car navigation system 1 will be specifically described.
The CPU of the car navigation apparatus 10 executes the danger avoidance possibility information input program shown by the flowchart in FIG. 8 only once when the car navigation apparatus 10 is activated. Note that the risk avoidance possibility information input program of FIG. 8 is executed by the function of the risk avoidance possibility information input means (danger avoidance possibility information input process) and the warning information output control means (warning information output control process). It corresponds to that part of the function is achieved.

Specifically, when the CPU starts the process of the risk avoidance possibility information input program, in step 805, as described above, the risk avoidance possibility information input including the five input fields and the input completion button is provided. The image is displayed on the display of the display output unit 10a.
Next, in step 810, the CPU stands by until input completion information is received (received).

  The driver DR touches the display to select the driving skill level, the driving experience level, the physical condition level, the weather, and the vehicle type in each input field, and then touches the input completion button.

  Here, the driver DR selects “low” as the driving skill level, selects “less than one year” as the driving experience level, selects “good” as the physical condition level, and selects “rain” as the weather. Then, after selecting “TA” as the vehicle type, a case where the input completion button is touched (that is, input completion information is input) will be described.

  In this case, upon receiving the input completion information, the CPU makes a “Yes” determination at step 810 to proceed to step 815, where the risk represents the selected driving skill level, driving experience level, physical condition level, weather, and vehicle type. Generate (acquire) avoidability information.

  Next, in step 820, the CPU acquires a first threshold amount to a fifth threshold amount based on the risk avoidance possibility information acquired in step 815, and acquires the acquired first threshold amount to fifth. A value obtained by adding all of the threshold amounts to the threshold risk standard value (in this example, “100”) is acquired as the threshold risk.

  According to the above assumption, “−5” is acquired as the first threshold amount, “−5” is acquired as the second threshold amount, “+5” is acquired as the third threshold amount, “−5” is acquired as the threshold amount, and “+5” is acquired as the fifth threshold amount.

Therefore, in this case, the CPU acquires “95” as the threshold risk degree. The CPU stores threshold risk information indicating the acquired threshold risk in the memory. The threshold risk information is a value corresponding to the risk avoidance possibility information. Therefore, storing threshold risk information corresponds to storing danger avoidance information.
Next, the CPU proceeds to step 899 to end the execution of this program once.

  On the other hand, the CPU of the car navigation apparatus 10 executes the dangerous position information transmission program shown by the flowchart in FIG. 9 every time a predetermined detection interval (1 second in this example) elapses. The execution of the dangerous position information transmission program of FIG. 9 corresponds to the achievement of the function of the dangerous position information transmission means.

  Specifically, when starting the processing of the dangerous position information transmission program, the CPU acquires (reads) the vehicle speed detected by the vehicle speed sensor 13 in step 905. Next, in step 910, the CPU determines whether or not the acquired vehicle speed is higher than a preset threshold vehicle speed (5 km / h in this example).

  When the driver DR is driving the vehicle CA in a state where the driver DR feels that the possibility of the vehicle CA being in a dangerous state is very low (the possibility is not relatively high). The explanation is continued assuming that

  In this state, the vehicle speed detected by the vehicle speed sensor 13 is higher than the threshold vehicle speed. Therefore, the CPU makes a “Yes” determination at step 910 to proceed to step 915 to acquire a risk index value. Here, the risk index value is the amount of sweat detected by the sweat sensor 11 and the blood pressure and heart rate detected by the sphygmomanometer 12.

  Next, in step 920, the CPU determines whether or not the dangerous position detection condition is satisfied. Specifically, in step 920, the CPU has the acquired sweating amount larger than a predetermined threshold sweating amount, the acquired blood pressure is higher than a predetermined threshold blood pressure, and the acquired heart rate. Is higher than a predetermined threshold heart rate. In this example, the threshold sweating amount is larger than the average value of the sweating amount of the driver DR detected by the sweating sensor 11 when the state of the vehicle CA is not dangerous, and the state of the vehicle CA is dangerous. In such a state, the amount is set to be smaller than the average value of the sweating amount of the driver DR detected by the sweating sensor 11. Also, the threshold blood pressure and the threshold heart rate are set in the same manner as the threshold sweating amount.

  According to the above assumption, the acquired sweating amount is less than the threshold sweating amount, the acquired blood pressure is lower than the threshold blood pressure, and the acquired heart rate is lower than the threshold heart rate. Therefore, the CPU makes a “No” determination at step 920 to directly proceed to step 999 to end the execution of this program once.

  If the vehicle CA is stopped, the CPU makes a “No” determination at step 910 to directly proceed to step 999.

In addition, the CPU of the car navigation device 10 executes a vehicle position information acquisition program (not shown) every time a predetermined update interval (1 second in this example) elapses. The CPU acquires GPS information based on the GPS signal received via the GPS antenna (by demodulating the GPS signal). Furthermore, the CPU generates (acquires) vehicle position information (in this example, latitude information indicating latitude and longitude information indicating longitude) indicating the position of the vehicle CA based on the acquired GPS information. Then, the CPU stores the generated vehicle position information and the reception time information indicating the time (reception time) at which the GPS signal that is the basis of the vehicle position information is received in the memory, so that the vehicle in the memory is stored. Update location information and reception time information. Next, the CPU once ends execution of this program.
The execution of the vehicle position information acquisition program corresponds to the achievement of the function of the vehicle position information acquisition means.

On the other hand, the CPU of the server device 20 starts execution of a dangerous position information reception program (not shown) when the program is not being executed and does not start when the program is being executed.
When starting the processing of the dangerous position information receiving program, the CPU stands by until dangerous position information is received from the car navigation device 10. Then, when the CPU receives the dangerous position information, the CPU newly stores the received dangerous position information in the HDD. That is, the dangerous position information is stored in the HDD. Next, the CPU once ends execution of this program.

  Next, it is assumed that the driver DR feels that there is a relatively high possibility that the state of the vehicle CA will be in a dangerous state because a dangerous object (for example, a ball) has jumped onto the road. to continue.

  In this case, the sweating amount of the driver DR is larger than the threshold sweating amount, the blood pressure of the driver DR is higher than the threshold blood pressure, and the heart rate of the driver DR is higher than the threshold heart rate.

Accordingly, when the CPU starts executing the dangerous position information transmission program of FIG. 9 and proceeds to step 920, the CPU determines “Yes” and proceeds to step 925 to store the information in the memory (stored in the memory). ) The dangerous position information including the reception time information and the vehicle position information is transmitted to the server device 20.
Thereby, the CPU of the server device 20 receives the dangerous position information by executing the dangerous position information receiving program, and newly stores the received dangerous position information in the HDD.

  By the way, when the state of the vehicle approaches a dangerous state, the driver's mental state changes. Accordingly, by transmitting the dangerous position information based on the risk index value that is a value according to the mental state of the driver in this way, the risk represented by the risk information acquired by the server device 20 is set to the actual risk. Close to the degree.

  Further, the CPU of the car navigation apparatus 10 executes the warning information output program shown by the flowchart in FIG. 10 every time a predetermined request interval (in this example, 10 seconds) elapses. Note that the warning information output program of FIG. 10 is executed by a part of the function of the warning information output control means (warning information output control process), the function of the risk request information transmitting means, and the function of the risk information receiving means. Corresponds to being achieved.

More specifically, when the CPU starts the processing of the warning information output program, in step 1005, the risk level includes the reception time information and the vehicle position information in the memory, and indicates that the transmission of the risk level information is requested. The request information is transmitted to the server device 20.
Next, in step 1010, the CPU stands by until risk information is received from the server device 20.

  On the other hand, the CPU of the server device 20 starts the execution of the risk information transmission program shown by the flowchart in FIG. 11 when the program is not being executed, and does not start when the program is being executed. It has become. The execution of the risk information transmission program in FIG. 11 corresponds to the achievement of the function of the risk information acquisition unit and the function of the risk information transmission unit.

  Specifically, when starting the processing of the risk information transmission program, the CPU stands by in step 1105 until receiving the risk request information from the car navigation device 10.

  When the CPU of the server device 20 receives the risk level request information from the car navigation device 10, the CPU 20 determines “Yes” in step 1105 and proceeds to step 1110. In step 1110, the CPU satisfies the above extraction condition from the dangerous position information in the HDD (stored in the HDD) based on the vehicle position information and the reception time information included in the received risk request information. The dangerous position information is extracted as neighboring dangerous position information.

  That is, the position represented by the vehicle position information included in the nearby dangerous position information is a position within a 200 m square area centered on the position of the vehicle represented by the vehicle position information included in the received risk request information. Further, the time represented by the reception time information included in the nearby dangerous position information (the time point when the risk index value related to the nearby dangerous position information is detected (the time point immediately near) is included in the received risk request information. This is the time between the reception time represented by the received reception time information (the time when the vehicle position information included in the risk requirement information is acquired) and the time point two hours before.

  Next, the CPU proceeds to step 1115 and obtains risk level information representing the risk level by obtaining the number of extracted nearby dangerous position information as the risk level.

  By the way, an area including many positions represented by the dangerous position information has a higher degree of danger. Therefore, the number of dangerous position information that represents a position within a predetermined area including the position of the vehicle CA in the dangerous position information well represents the degree of danger. Therefore, the warning information can be appropriately output by obtaining the degree of danger based on the nearby dangerous position information.

  Further, in a car navigation device that outputs warning information based on each dangerous position information, when a large number of positions indicated by the dangerous position information exist in a relatively narrow area, an excessive amount of warning information is output. There is a fear. On the other hand, according to this car navigation apparatus 10, even in such a case, it is possible to avoid outputting too much warning information.

  In addition, the position that has decreased after the actual degree of risk has increased once by obtaining the degree of risk information based on the dangerous position information received by the server device 20 between the present time and a point in time before a predetermined time. Even when the vehicle exists, alarm information can be appropriately output according to the degree of danger at the time when the vehicle CA approaches that position.

Then, the CPU proceeds to step 1120 to transmit the acquired risk information to the car navigation device 10.
Next, the CPU proceeds to step 1199 to end the execution of this program once.

  Thereby, the car navigation device 10 receives the risk information from the server device 20. Therefore, the CPU of the car navigation apparatus 10 determines “Yes” in Step 1010 and proceeds to Step 1015 to determine whether or not the risk level represented by the received risk level information is higher than the threshold level risk level in the memory. To do.

  First, the description will be continued assuming that the current position of the vehicle CA is at the first position. The first position is a position where the server apparatus 20 has received the dangerous position information only 90 times from a vehicle in a 200 m square area centered on the position between the current time and a time point two hours before.

  In this case, the risk is lower than the threshold risk. Accordingly, the CPU makes a “No” determination at step 1015 to directly proceed to step 1099 without outputting the warning information, and temporarily ends the execution of this program.

  Next, the description will be continued assuming that the current position of the vehicle CA is at the second position. The second position is a position where the server apparatus 20 has received the dangerous position information only 100 times from a vehicle in a 200 m square area centered on the position between the present time and a time point two hours before.

  In this case, the risk is higher than the threshold risk. Accordingly, the CPU makes a “Yes” determination at step 1015 to proceed to step 1020 to warn that the possibility of the vehicle CA being in a dangerous state is relatively high and to reduce the vehicle speed. The warning image information representing the image prompting the DR is sent to the display output unit 10a, and the image represented by the warning image information is displayed on the display of the display output unit 10a.

Further, the CPU warns that the vehicle CA is likely to be in a dangerous state, and also outputs warning audio information representing a voice prompting the driver DR to reduce the vehicle speed to the audio output unit 10b. The voice represented by the warning voice information is output from the speaker of the voice output unit 10b.
Note that the warning image information and the warning audio information constitute warning information.
Then, the CPU proceeds to step 1099 to end the execution of this program once.

  Next, the driver DR selects “high” as the driving skill level, selects “three years or more” as the driving experience level, selects “good” as the physical condition level, and selects “rain” as the weather. The case where “TA” is selected as the vehicle type and the current position of the vehicle CA is at the second position will be described.

  In this case, in step 820, the CPU of the car navigation apparatus 10 acquires “+5” as the first threshold amount, acquires “+5” as the second threshold amount, and “+5” as the third threshold amount. ”,“ −5 ”as the fourth threshold amount, and“ +5 ”as the fifth threshold amount. Therefore, the CPU acquires “115” as the threshold risk degree.

  Therefore, the risk (100) is lower than the threshold risk (115). Therefore, when the CPU starts executing the warning information output program and proceeds to step 1015, the CPU determines “No” and proceeds directly to step 1099 without outputting the warning information, and temporarily executes the program. finish.

  As described above, according to the first embodiment of the alarm device of the present invention, the warning information becomes easier to output as the risk avoidance possibility represented by the input risk avoidance possibility information becomes lower. Therefore, it is possible to suppress the output of excessive warning information when the risk avoidance possibility is high, and to avoid the shortage of warning information output when the risk avoidance possibility is low. Can do.

  Furthermore, according to the first embodiment, the car navigation device 10 receives the risk information transmitted from the server device 20, and outputs warning information based on the received risk information. As a result, even if the vehicle CA has not yet traveled at a high risk level, if the server device 20 has risk level information indicating that the risk level at that position is high, The driver DR driving the vehicle CA can recognize the position as a position with a high degree of risk based on the output warning information. As a result, it is possible to increase the possibility that the driver DR avoids the vehicle CA from the danger target.

  Further, according to the first embodiment, the dangerous position information transmitted from the car navigation device 10 is stored in the server device 20. Therefore, the dangerous position information can be sent to the server device 20 by the plurality of car navigation devices 10. Thereby, the server apparatus 20 can acquire risk level information based on more dangerous position information. Therefore, the risk level represented by the risk level information can be made closer to the actual risk level.

  Next, a car navigation device (alarm device) according to a second embodiment of the present invention will be described. The car navigation device according to the second embodiment accumulates (stores) dangerous position information in the HDD of the car navigation device and stores the dangerous position information with respect to the car navigation device 10 according to the first embodiment. The only difference is that the risk level information is acquired based on. Accordingly, the following description will focus on such differences.

  As shown in FIG. 12, the functions of the car navigation device 60 are replaced with the dangerous position information transmission unit 37, the risk level request information transmission unit 38, and the risk level information reception unit 39 among the functions of the car navigation device 10. A dangerous position information storage unit (dangerous position information storage unit) 42 and a risk level information acquisition unit (danger level information acquisition unit) 43 are included.

  The dangerous position information storage unit 42 acquires the amount of sweat detected by the sweat sensor 11 and the blood pressure and heart rate detected by the sphygmomanometer 12 every time the detection interval elapses. The dangerous position information storage unit 42 stores the vehicle position information acquisition unit 31 when the vehicle speed detected by the vehicle speed sensor 13 is higher than the threshold vehicle speed and the dangerous position detection condition is satisfied. Newly stores (accumulates) dangerous position information including vehicle position information and reception time information.

  The risk information acquisition unit 43 stores the dangerous position information storage unit 42 based on the vehicle position information and the reception time information stored in the vehicle position information acquisition unit 31 every time the request interval elapses. From the dangerous position information, the dangerous position information satisfying the extraction condition is extracted as the nearby dangerous position information.

  The risk level information acquiring unit 43 sends information indicating the number of extracted nearby dangerous position information to the warning information output control unit 40 as the risk level information.

  According to the car navigation device 60 configured in this way, as in the car navigation system 1 according to the first embodiment, the warning information becomes lower as the danger avoidance possibility represented by the inputted danger avoidance possibility information becomes lower. It becomes easy to output. Therefore, it is possible to suppress the output of excessive warning information when the risk avoidance possibility is high, and to avoid the shortage of warning information output when the risk avoidance possibility is low. Can do.

  In addition, this invention is not limited to said each embodiment, A various modification can be employ | adopted within the scope of the present invention. For example, in each of the embodiments described above, the risk index value is the amount of sweat detected by the sweat sensor 11 and the blood pressure and heart rate detected by the sphygmomanometer 12, but the amount of sweat, blood pressure and heart rate are the same. One or two of them may be used. Further, the risk index value may be an amount other than the sweating amount, the blood pressure, and the heart rate as long as it changes in accordance with the driver's mental state.

  In each of the above embodiments, the degree of risk is the number of dangerous position information representing a position in a predetermined area including the current vehicle position, but the current vehicle among the positions represented by the dangerous position information. A value that decreases as the distance between the position closest to the current position and the current vehicle position increases (for example, a value that is inversely proportional to the distance).

  Furthermore, each said embodiment may be comprised so that a risk may be calculated | required only based on the dangerous position information showing the position ahead of the advancing direction of vehicle CA. In this case, each of the above embodiments is preferably configured to output the warning information at a timing that becomes earlier as the risk avoidance possibility represented by the input risk avoidance possibility information becomes lower.

  According to this, when the risk avoidance possibility is relatively low, warning information is output at a relatively early timing. Thus, the driver DR can perform an operation for avoiding the vehicle CA from the danger target and confirmation of the danger target at a relatively early timing. As a result, even when the risk avoidance possibility is relatively low, it is possible to increase the possibility that the vehicle CA can be prevented from becoming a dangerous state.

  In addition, each of the above embodiments is based on the GPS signal received immediately before (GPS information acquired immediately before) when the vehicle speed is higher than the threshold vehicle speed and the dangerous position detection condition is satisfied. The dangerous position information including the vehicle position information and the reception time information acquired in this way is transmitted or stored.

  By the way, each said embodiment is a case where a vehicle speed is higher than the said threshold vehicle speed, Comprising: When the said dangerous position detection conditions are satisfied, it waits until it receives a GPS signal next, Based on the received GPS signal The dangerous position detection condition is established based on the vehicle position information and the reception time information acquired in this way, and the vehicle position information and the reception time information that have been acquired (acquired based on the previously received GPS signal). The position and time of the vehicle CA at the time of the determination may be obtained, and dangerous position information including information representing the obtained position and information representing the time may be transmitted or stored.

  In each of the above embodiments, the risk avoidance possibility information is information representing all parameters of the driving skill level, the driving experience level, the physical condition level, the weather, and the vehicle type. By the way, the risk avoidance possibility information may be information representing some parameters of the driving skill level, the driving experience level, the physical condition level, the weather, and the vehicle type. The risk avoidance information is information indicating parameters other than the driving skill level, the driving experience level, the physical condition level, the weather, and the vehicle type as long as the information indicates parameters that affect the risk avoidance potential. May be.

  The present invention can be applied to a car navigation system including a car navigation device that is mounted on a vehicle and outputs warning information.

It is a figure showing the schematic structure of the car navigation system concerning a 1st embodiment of the present invention. It is a block diagram showing the outline of the function of the car navigation system shown in FIG. It is a driving skill level table which prescribes | regulates the relationship between a driving skill level and threshold variation. It is a driving experience years level table which prescribes | regulates the relationship between a driving experience years level and threshold variation. It is a physical condition level table which prescribes | regulates the relationship between a physical condition level and threshold value variation | change_quantity. It is a weather table which prescribes | regulates the relationship between a weather and a threshold value variation | change_quantity. It is a vehicle type table which prescribes | regulates the relationship between a vehicle type and threshold value variation | change_quantity. It is the flowchart which showed the danger avoidance possibility information input program which CPU of the car navigation apparatus shown in FIG. 1 performs. It is the flowchart which showed the dangerous position information transmission program which CPU of the car navigation apparatus shown in FIG. 1 performs. It is the flowchart which showed the warning information output program which CPU of the car navigation apparatus shown in FIG. 1 performs. It is the flowchart which showed the risk information transmission program which CPU of the server apparatus shown in FIG. 1 performs. It is a block diagram showing the outline of the function of the car navigation apparatus concerning a 2nd embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car navigation system 10 Car navigation apparatus 10a Display output part 10b Audio | voice output part 11 Sweating sensor 12 Sphygmomanometer 13 Vehicle speed sensor 20 Server apparatus 31 Vehicle position information acquisition part 36 Risk avoidance possibility information input part 37 Danger position information transmission part 38 Danger Degree request information transmission unit 39 Risk information reception unit 40 Warning information output control unit 41 Warning information output unit 42 Hazardous location information storage unit 43 Hazardous degree information acquisition unit 51 Hazardous location information storage unit 52 Risk level request information reception unit 53 Risk level Information acquisition unit 54 Risk information transmission unit 60 Car navigation device

Claims (13)

An alarm device mounted on a vehicle and outputting warning information,
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Danger avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver;
The warning is based on the risk information indicating the risk according to the probability of the vehicle being in a dangerous state depending on the environment of the road on which the vehicle travels, and the input risk avoidance possibility information. Warning information output control means for controlling the output of information;
Vehicle position information acquisition means for acquiring vehicle position information representing the position of the vehicle;
A degree-of-risk request information transmitting means for transmitting the degree-of-risk request information including the acquired vehicle position information to the server device;
A degree-of-risk information receiving means for receiving from the server device the degree-of-risk information according to the vehicle position information included in the degree-of-risk request information;
With
The warning information output control means is configured to control output of the warning information based on the received risk level information and the input risk avoidance possibility information,
The alarm device further includes:
A risk index value detecting means for detecting a risk index value according to the mental state of the driver;
The detected risk index value includes the acquired vehicle position information when the detected risk index value is within a predetermined range including the risk index value detected when the vehicle state becomes the dangerous state. Dangerous position information transmitting means for transmitting dangerous position information to the server device as information that is the basis of the risk information;
With
The risk level information is a risk position indicating a position in a predetermined area including the position of the vehicle represented by the vehicle position information included in the risk level request information of the risk position information received by the server device. An alarm device that is information indicating the number of information . The alarm device according to claim 1 ,
The risk information may be the time between the time when the vehicle position information included in the risk request information of the dangerous position information received by the server device is acquired and a time point before a predetermined time. An alarm device that is information based on the dangerous position information sent to the server device based on the detected risk index value.   An alarm device mounted on a vehicle and outputting warning information,
  Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Danger avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver;
  The warning is based on the risk information indicating the risk according to the probability of the vehicle being in a dangerous state depending on the environment of the road on which the vehicle travels, and the input risk avoidance possibility information. Warning information output control means for controlling the output of information;
  Vehicle position information acquisition means for acquiring vehicle position information representing the position of the vehicle;
  A risk index value detecting means for detecting a risk index value according to the mental state of the driver;
  The detected risk index value includes the acquired vehicle position information when the detected risk index value is within a predetermined range including the risk index value detected when the vehicle state becomes the dangerous state. Dangerous position information storage means for storing dangerous position information;
  A risk information acquisition means for acquiring the risk information based on the stored risk position information and the acquired vehicle position information;
  With
  The warning information output control means is configured to control the output of the warning information based on the acquired risk level information and the input risk avoidance possibility information,
  The risk level information is information indicating the number of dangerous position information that represents a position in a predetermined area including the position of the vehicle represented by the acquired vehicle position information among the stored dangerous position information. Some alarm devices. The alarm device according to claim 3 ,
The risk information is based on the detected risk index value from the stored risk position information to a time point a predetermined time before the vehicle position information is acquired. An alarm device which is information based on the stored dangerous position information. The alarm device according to any one of claims 1 to 4 ,
The warning information output control means permits the warning information to be output when the risk level represented by the risk level information is higher than a predetermined threshold risk level, while the risk level is lower than the threshold risk level. An alarm device configured to prohibit the output of the warning information. The alarm device according to any one of claims 1 to 5 ,
The warning information output control means is an alarm device configured to set the threshold risk level to a value that decreases as the risk avoidance possibility represented by the input risk avoidance possibility information decreases. The alarm device according to any one of claims 1 to 6 ,
The warning device, wherein the parameter is at least one of a level of the driving skill of the driver, a length of driving experience of the driver, a health condition of the driver, a weather condition, and a vehicle type of the vehicle. The alarm device according to any one of claims 1 to 7 ,
The warning information output control means is an alarm device configured to output the warning information at a timing earlier as the risk avoidance possibility represented by the input danger avoidance possibility information becomes lower. An alarm system including an alarm device mounted on a vehicle and outputting warning information, and a server device capable of communicating with the alarm device,
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. A risk avoidance possibility information input means for inputting avoidance possibility information based on the input operation of the driver;
The alarm device is
Vehicle position information acquisition means for acquiring vehicle position information representing the position of the vehicle;
A risk request information transmitting means for transmitting risk request information including the acquired vehicle position information to the server device;
With
The server device
The vehicle position included in the risk request information received from the warning device, the risk information indicating the risk according to the probability that the vehicle state becomes the dangerous state depending on the environment of the road on which the vehicle travels A risk information acquisition means for acquiring based on the information;
A risk information transmitting means for transmitting the acquired risk information to the alarm device;
With
Furthermore, the alarm device comprises:
Warning information output control means for controlling the output of the warning information based on the danger level information received from the server device and the input danger avoidance possibility information;
Furthermore, the alarm device comprises:
A risk index value detecting means for detecting a risk index value according to the mental state of the driver;
The detected risk index value includes the acquired vehicle position information when the detected risk index value is within a predetermined range including the risk index value detected when the vehicle state becomes the dangerous state. Dangerous position information transmitting means for transmitting dangerous position information to the server device as information that is the basis of the risk information;
With
The risk level information is a risk position indicating a position in a predetermined area including the position of the vehicle represented by the vehicle position information included in the risk level request information of the risk position information received by the server device. An alarm system that is information representing the number of information . An alarm control method for controlling an alarm device mounted on a vehicle and outputting warning information,
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Enter avoidability information based on the driver's input operation ,
Obtaining vehicle position information representing the position of the vehicle;
Detecting a risk index value according to the mental state of the driver;
When the detected risk index value is within a predetermined range including a risk index value detected when the vehicle state becomes the dangerous state, the vehicle state is determined by the vehicle. Sending the dangerous position information including the acquired vehicle position information to the server device as information serving as a basis of the risk information indicating the degree of risk according to the probability of being in a dangerous state depending on the environment of the road on which the vehicle travels,
Transmitting risk request information including the acquired vehicle position information to the server device;
Receiving the risk information corresponding to the vehicle position information included in the risk request information from the server device;
Control the output of the warning information based on the received risk information and the input risk avoidance possibility information,
The risk level information is a risk position indicating a position in a predetermined area including the position of the vehicle represented by the vehicle position information included in the risk level request information of the risk position information received by the server device. An alarm control method which is information indicating the number of information .   An alarm control method for controlling an alarm device mounted on a vehicle and outputting warning information,
  Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Enter avoidability information based on the driver's input operation,
  Obtaining vehicle position information representing the position of the vehicle;
  Detecting a risk index value according to the mental state of the driver;
  The detected risk index value includes the acquired vehicle position information when the detected risk index value is within a predetermined range including the risk index value detected when the vehicle state becomes the dangerous state. Memorize dangerous location information,
  Based on the stored dangerous position information and the acquired vehicle position information, the degree of risk corresponding to the probability that the state of the vehicle will be the dangerous state depending on the environment of the road on which the vehicle runs is determined. Get risk information to represent
  Control the output of the warning information based on the acquired risk information and the input risk avoidance possibility information,
  The risk level information is information indicating the number of dangerous position information that represents a position in a predetermined area including the position of the vehicle represented by the acquired vehicle position information among the stored dangerous position information. Some alarm control methods. In an alarm device that is mounted on a vehicle and outputs warning information,
Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Enter avoidability information based on the driver's input operation ,
Obtaining vehicle position information representing the position of the vehicle;
Detecting a risk index value according to the mental state of the driver;
When the detected risk index value is within a predetermined range including a risk index value detected when the vehicle state becomes the dangerous state, the vehicle state is determined by the vehicle. Sending the dangerous position information including the acquired vehicle position information to the server device as information serving as a basis of the risk information indicating the degree of risk according to the probability of being in a dangerous state depending on the environment of the road on which the vehicle travels,
Transmitting risk request information including the acquired vehicle position information to the server device;
Receiving the risk information corresponding to the vehicle position information included in the risk request information from the server device;
Based on the received risk level information and the input risk avoidance possibility information, control the output of the warning information, to execute the process,
The risk level information is a risk position indicating a position in a predetermined area including the position of the vehicle represented by the vehicle position information included in the risk level request information of the risk position information received by the server device. An alarm control program that is information indicating the number of information .   In an alarm device that is mounted on a vehicle and outputs warning information,
  Danger that is information that represents at least one of the property of the vehicle and the property of the driver of the vehicle and that represents parameters that affect the risk avoidance that can prevent the vehicle from becoming a dangerous state. Enter avoidability information based on the driver's input operation,
  Obtaining vehicle position information representing the position of the vehicle;
  Detecting a risk index value according to the mental state of the driver;
  The detected risk index value includes the acquired vehicle position information when the detected risk index value is within a predetermined range including the risk index value detected when the vehicle state becomes the dangerous state. Memorize dangerous location information,
  Based on the stored dangerous position information and the acquired vehicle position information, the degree of risk corresponding to the probability that the state of the vehicle will be the dangerous state depending on the environment of the road on which the vehicle runs is determined. Get risk information to represent
  Based on the acquired risk level information and the input risk avoidance possibility information, control the output of the warning information, to execute the process,
  The risk level information is information indicating the number of dangerous position information that represents a position in a predetermined area including the position of the vehicle represented by the acquired vehicle position information among the stored dangerous position information. Some alarm control program.

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