JP4760783B2 - Car navigation system - Google Patents

Description

  The present invention relates to a vehicle-mounted navigation device provided with past driving pattern storage means capable of storing driving patterns driven by a vehicle in the past as past driving patterns.

Conventionally, a driving pattern driven by a regular driver (vehicle owner) is stored in advance, the current driving pattern is compared with the driving pattern stored in advance, and when both match as a verification result If it is determined that a regular driver is driving, and if both do not match as a result of verification, it is determined that an unauthorized driver is driving and a warning is output or the behavior of the vehicle is controlled. (For example, see Patent Documents 1 and 2).
JP 2006-21604 A JP-A-9-11857

  Patent Documents 1 and 2 describe that a driving pattern of an authorized driver is stored in advance to output a warning or control the behavior of a vehicle when an unauthorized driver drives. And theft of the vehicle can be prevented. By the way, there are cases where the driver unconsciously drives with a tendency different from usual due to, for example, sudden physical condition abnormality.

  However, if you leave the driver unconsciously driving with a different tendency than usual, for example, it may cause a traffic accident. Effective measures are desired. The techniques described in Patent Documents 1 and 2 have not yet solved the above-described problems.

  The present invention has been made in view of the above circumstances, and its purpose is to alert the driver when the driver is unconsciously driving with a tendency different from usual. Another object of the present invention is to provide an in-vehicle navigation device that can appropriately ensure safety.

According to the first aspect of the present invention, the past driving pattern storage means stores a driving pattern that the driver has driven in the past as a past driving pattern that represents driving characteristics for each route of the driver. When the parking is completed, the parking data acquisition means acquires the parking end time, the parking time, and the parking position related to the parking as parking data, and the use facility specifying means acquires the parking data acquired by the map data and the parking data acquisition means. And the facility used by the driver during the parking period is identified as the facility to be used, and the verification operation pattern specifying means obtains the parking data from the past driving patterns stored in the past driving pattern storage means. collating operation pattern of the past operation pattern when the unit is the acquired parking position as a parking data toward the destination assuming started operation as a departure point To identify with.

  Then, when the driver starts driving, the current driving pattern acquisition means acquires the driving pattern when the driver starts driving from the parking position toward the destination as the current driving pattern, and the driving pattern matching means The verification operation pattern specified by the verification operation pattern specifying unit is compared with the current operation pattern acquired by the current operation pattern acquisition unit. Here, the control means causes the warning output means to output a warning if they do not match as the collation result collated by the operation pattern collating means.

  Thus, for example, if the driving pattern when the driver goes home after receiving a medical examination is specified as the verification driving pattern, the driver becomes sick while driving from the hospital toward the home. Of course, when the driver is driving in the same tendency as usual, it does not output any warning, but on the other hand, the driver becomes sick while driving from the hospital to the house, If the driver is unconsciously driving with a different tendency than usual, a warning is output. By outputting the warning in this manner, the driver can be alerted and safety can be appropriately ensured.

  According to the second aspect of the present invention, the control means controls the behavior of the vehicle if they do not match as a collation result collated by the driving pattern collating means. Thereby, the influence on the surroundings can be suppressed, for example, by performing automatic deceleration control or automatic stop control.

  According to the third aspect of the present invention, the control means performs a notification operation toward the outside of the vehicle if both do not match as the collation result collated by the driving pattern collating means. Accordingly, for example, by automatically blinking the hazard lamp, it is possible to inform the surroundings that the driver is unconsciously driving with a tendency different from usual.

  According to the fourth aspect of the present invention, the control means causes the communication means to transmit a notification signal to the external device through the communication line if both do not match as the collation result collated by the operation pattern collating means. As a result, for example, by sending a notification signal to a center device installed in an emergency call center or a terminal installed in the driver's home via a communication line, the driver is unconsciously tending to be different from usual. The operator of the emergency call center and the driver's family can be notified that they are driving.

  According to the invention described in claim 5, the operation pattern collating means determines whether or not collation is possible when collating the collation operation pattern specified by the collation operation pattern specifying means and the current operation pattern acquired by the current operation pattern acquisition means. The standard can be changed according to the contents of the use facility specified by the use facility specifying means. Thereby, if the specified use facility is, for example, a hospital, that is, if there is a high possibility that the driver is in an abnormal physical condition, the judgment criteria are set gently, while the specified use facility is, for example, a convenience store If it is a facility that has nothing to do with other hospitals, that is, if it is unlikely that the driver will be sick, by setting strict criteria, the accuracy of warnings can be increased, It is possible to avoid as much as possible that a warning is erroneously output.

  According to the sixth aspect of the present invention, the control means stores the current operation pattern acquired by the current operation pattern acquisition means in the past operation pattern storage means if both match as the verification result verified by the operation pattern verification means. The past driving pattern is updated by reflecting it in the past driving pattern. Thereby, the latest driving pattern of the driver can be reflected as a past driving pattern.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing the overall configuration of an in-vehicle navigation device. The in-vehicle navigation device 1 includes a control unit 2 (parking data acquisition means, use facility specification means, verification operation pattern specification means, current driving pattern acquisition means, driving pattern verification means and control means), a position detector 3, Map data input device 4, operation switch group 5, communication device 6 (communication means in the present invention), external memory 7 (past driving pattern storage means in the present invention), display device 8 (warning output means in the present invention) , A voice controller 9, a voice recognition unit 10, a remote control sensor 11, a power supply control unit 12, and an in-vehicle LAN connection unit 13.

  The control unit 2 includes a CPU, a RAM, a ROM, and an I / O bus, and executes a control program to control the operation of the entire apparatus. The position detector 3 includes a G sensor 3a, a gyroscope 3b, a distance sensor 3c, and a GPS receiver 3d, and these components have detection errors having different properties. The control unit 2 detects (identifies) the current position of the host vehicle by complementing the detection signals input from these components. In this case, the position detector 3 does not have to include all these components as long as the current position of the host vehicle can be detected with the required detection accuracy, and a steering sensor for detecting the steering angle of the steering wheel A wheel sensor that detects the rotation of each wheel may be combined.

  The map data input device 4 is loaded with a recording medium such as a CD-ROM, DVD-ROM, memory card, or HDD, and inputs map data, landmark data, and map matching data. The map data is data including information on facilities. The operation switch group 5 includes mechanical switches arranged around the display device 8 and touch switches formed on the display device 8, for example, operation contents (for example, menu display selection, destination setting, route) performed by the driver. Search, route guidance start, display screen change, volume adjustment, etc.) are detected and output to the control unit 2.

  The communication device 6 performs a communication operation through a communication line with an external device. The external memory 7 is composed of a large-capacity storage device such as an HDD, and stores large-capacity data or data that is not desired to be erased even when the power is turned off. In this embodiment, the driving pattern that the driver has driven in the past is stored in the past. It is memorized as an operation pattern. The past driving pattern represents driving characteristics for each route of the driver, and as an example, as shown in FIG. 2, for example, characteristics of acceleration patterns for each correspondence relationship between road type and number of lanes / road width Is expressed. For example, when the road type is “narrow street” and the number of lanes / road width is “less than 1 lane / 3 m”, the vehicle travels at a speed of 15 km per hour in a section of 0 to 10 m and 30 km per hour in a section of 10 to 20 m. This represents the acceleration pattern characteristic of traveling at In addition to the characteristics of these acceleration patterns, past driving patterns include characteristics of deceleration patterns (such as the start timing of the brake operation) when stopping at an intersection or entering a curve, and turning patterns when turning right or left ( Characteristics of the steering operation start timing) are included in a complex manner.

  The display device 8 is composed of, for example, a color liquid crystal display, displays various display screens such as a menu display selection screen, and superimposes a current position mark indicating the current position of the host vehicle and a driving locus on a map of map data. To display. The display device 8 may be composed of an organic EL, a plasma display, or the like.

  The voice controller 9 controls the operation of the voice recognition unit 10 and outputs, for example, route guidance guidance or warning guidance from the speaker 14 (warning output means in the present invention). The voice recognition unit 10 recognizes the voice input by the microphone 15 according to a voice recognition algorithm. The remote control sensor 11 outputs an operation signal received from the operation remote controller 16 to the control unit 4.

  The power control unit 12 receives the ACC signal from the key switch, and the control unit 2 turns the power on and off in conjunction with the on / off of the ACC signal. When the power is turned on, all functional blocks operate to operate normally, and the power is turned off. In this case, only a part of the functional blocks operates, and the power consumption is lower than that of the normal operation. The in-vehicle LAN connection unit 13 has an interface function with the in-vehicle LAN 17.

  The control unit 2 described above uses, for each function, a map data acquisition unit that acquires map data, the current position of the host vehicle, and road data included in the map data acquired by the map data acquisition unit. A map matching unit for identifying a road where the current position of the host vehicle exists, a route search unit for searching for a route from the current position of the host vehicle specified by the map matching unit to a destination set by the driver, and a route search unit A route guidance unit that calculates routes necessary for route guidance based on the searched route and road data included in the map data and intersection location data, a map around the current position of the vehicle, and a highway And a drawing section for drawing an enlarged view near the intersection.

  Next, the operation of the above configuration will be described with reference to FIG. When the ACC switch is turned off, that is, when the vehicle is in a parking state, the control unit 2 operates to reduce power consumption and monitors whether the ACC signal input by the power supply control unit 12 is turned on. It is monitored whether or not the switch is turned on (step S1).

  Here, consider the case where the driver gets on. When determining that the ACC switch is turned on ("YES" in step S1), the control unit 2 transitions from the low power consumption operation to the normal operation, and acquires the parking end time, the parking time, and the parking position as parking data. (Step S2). In this case, the control unit 2 acquires the time counted immediately after the current ACC switch is turned on as the parking end time, and calculates the difference from the parking start time measured immediately after the immediately preceding ACC switch is turned off from the parking end time. Acquired as the parking time, the current position detected based on the detection signal input from the position detector 3 immediately after the current ACC switch is turned on is acquired as the parking position.

  Next, the control unit 2 refers to the map data input from the map data input device 4 and specifies the use facility (step S3). In this case, when there are several facilities (for example, a hospital, a convenience store, a gas station, or the like) around the acquired current position, the control unit 2 determines the parking end time and the parking time and specifies the use facility. For example, if the parking end time is within the hospital examination time zone and the parking time is equal to the driver's usual examination time (a time sufficiently longer than the convenience store or gas station stoppage time), the hospital will be used as a facility. Identify.

  Next, when the driver sets a destination, the control unit 2 specifies a collation driving pattern for a route from the parking position to the destination from the past driving patterns stored in the external memory 7 (step S4). Next, when the driver starts driving, for example, the control unit 2 operates at the timing when the moving distance of the vehicle reaches a predetermined distance, or the timing when the number of times the vehicle has accelerated, decelerated, or turned reaches the predetermined number of times. The operation pattern after starting is acquired as the current operation pattern (step S5).

  And the control part 2 collates a collation driving | operation pattern and a present driving pattern (step S6), and determines whether both collation results correspond (step S7). In this case, the control unit 2 determines whether or not sudden acceleration, sudden deceleration, or sudden turning that cannot be seen in the acceleration pattern, deceleration pattern, or turning pattern stored in the verification operation pattern is performed. It is determined whether or not the collation results match.

  Here, the control unit 2 matches the collation result between them, that is, the current driving pattern this time is the same as the collation driving pattern specified from the past driving patterns accumulated in the past, and the driver is the same as usual. If it is determined that the vehicle is operating with a tendency (“YES” in step S7), it is monitored whether or not the ACC signal is turned off, and whether or not the ACC switch is turned off (step S8). Next, when determining that the vehicle has arrived at the destination and the driver has turned off the ACC switch ("YES" in step S8), for example, the control unit 2 determines the current driving pattern as the past driving pattern. The past operation pattern is updated by reflecting it in (Step S9).

  And the control part 2 memorize | stored based on the detection signal input from the position detector 3 just before turning off this ACC switch memorize | stores the time measured just before this ACC switch turned off as parking start time. The current position is stored as the parking position (step S10), the normal operation is changed to the low power consumption operation, and the series of processes is terminated.

  On the other hand, the control unit 2 does not match the verification results of the two, that is, the current driving pattern this time is different from the verification driving pattern specified from the past driving patterns accumulated in the past, and the driver usually If it is determined that the vehicle is driving with a different tendency ("NO" in step S7), a warning message is displayed on the display device 8 or a warning guidance is output from the speaker 14 (step S11). Then, the control unit 2 monitors whether or not the ACC signal is turned off and monitors whether or not the ACC switch is turned off (step S12). For example, the vehicle should arrive at the destination and the driver should get off. If it is determined that the ACC switch is turned off ("YES" in step S12), the time counted immediately before the current ACC switch is turned off is stored as the parking start time and the current ACC switch is turned off. The current position detected based on the detection signal input from the position detector 3 immediately before is stored as a parking position (step S10), the normal operation is changed to the low power consumption operation, and the series of processes is terminated.

  By the way, the case where the warning message is displayed on the display device 8 or the warning guidance is output from the speaker 14 when it is determined that the comparison results of the two do not match has been described. Control the behavior of the vehicle, such as automatic stop control, perform a notification operation toward the outside of the vehicle, such as automatically blinking the hazard lamp, etc., for example, send an emergency notification signal from the communication device 6 through the communication line It may be transmitted to a center device installed in the reporting center or a terminal installed in the driver's home.

  As described above, according to the present embodiment, in the in-vehicle navigation device 1, the driving pattern that the driver has driven in the past is stored as a past driving pattern, and when the vehicle finishes parking, the parking related to the parking is performed. The end time, parking time, and parking position are acquired as parking data, the map data and parking data are analyzed, the facility used by the driver during the parking period is specified as the facility used, and the past driving pattern The driving pattern when the driver starts driving from the parking position to the destination is specified by identifying the past driving pattern when assuming that the driving is started from the use facility to the destination. The pattern is acquired as the current operation pattern, the verification operation pattern is compared with the current operation pattern, and a warning message is displayed when they do not match. To constitute a display or warning guidance shows apparatus 8 into and outputted from the speaker 14.

  Thus, for example, if the driving pattern when the driver goes home after receiving a medical examination is specified as the verification driving pattern, the driver becomes sick while driving from the hospital toward the home. Of course, when the driver is driving in the same tendency as usual, it does not output any warning, but on the other hand, the driver becomes sick while driving from the hospital to the house, If the driver is unconsciously driving with a different tendency than usual, a warning is output, the driver can be alerted, and safety can be appropriately secured.

  Further, when the two do not match, for example, if configured to perform automatic deceleration control or automatic stop control, the influence on the surroundings can be suppressed, and for example, if the hazard lamp is configured to automatically blink. , It can inform the surroundings that the driver is unconsciously driving with a different tendency than usual, for example, a notification signal is sent to the center device installed in the emergency call center via the communication line or the driver's home If configured to transmit to the installed terminal, it is possible to notify the operator of the emergency call center and the driver's family that the driver is unconsciously driving with a different tendency than usual.

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
You may comprise so that the judgment reference | standard of the collation possibility at the time of collating a collation driving | operation pattern and a present driving | operation pattern may be changed according to the content of a utilization facility. In other words, if the specified use facility is, for example, a hospital and there is a high possibility that the driver is in an abnormal physical condition, the judgment criteria are set gently, while the specified use facility is a hospital such as a convenience store. Is an irrelevant facility, and if the driver is unlikely to be in an abnormal condition, it may be configured to set strict criteria, and if configured in this way, a warning is output. The accuracy can be increased, and it can be avoided as much as possible that the warning is erroneously output.

You may comprise so that a collation driving | operation pattern and a current driving | operation pattern may always be collated during the period when a driver | operator is driving, ie, the period until a vehicle parks.
Not only when a hospital is specified as a use facility used by a driver, but also when a physical education facility, amusement facility, a ceremonial occasion facility, or a eating and drinking facility is specified, the driver may be tired, emotionally changed, over-drinking or drinking However, since there is a possibility that the driver may unconsciously drive with a tendency different from usual, it can be applied to such a case.

Functional block diagram showing an embodiment of the present invention The figure which shows an example of the characteristic of the acceleration pattern for every correspondence with road classification and the number of lanes / road width flowchart

Explanation of symbols

  In the drawings, 1 is an in-vehicle navigation device, 2 is a control unit (parking data acquisition means, use facility specifying means, verification operation pattern specifying means, current driving pattern acquisition means, driving pattern verification means, control means), and 6 is a communication device ( Communication means), 7 is an external memory (past operation pattern storage means), 8 is a display device (warning output means), and 14 is a speaker (warning output means).

Claims (9)

A vehicle-mounted navigation device provided with past driving pattern storage means capable of storing driving patterns that the driver has driven in the past as past driving patterns representing driving characteristics for each route of the driver ,
Parking data acquisition means for acquiring parking end time, parking time, and parking position related to the parking as parking data when the vehicle has ended parking,
Use facility specifying means for analyzing the map data and the parking data acquired by the parking data acquisition means and specifying the facility used by the driver during the parking period as a use facility;
Past driving when it is assumed that driving is started from the parking position acquired as parking data by the parking data acquisition means from the past driving patterns stored in the past driving pattern storage means to the destination. Verification operation pattern specifying means for specifying a pattern as a verification operation pattern;
Current driving pattern acquisition means for acquiring a driving pattern as a current driving pattern when the driver starts driving from the parking position toward the destination;
An operation pattern collating unit that collates the collation operation pattern identified by the collation operation pattern specifying unit and the current operation pattern acquired by the current operation pattern acquisition unit;
A vehicle-mounted navigation device comprising: a control unit that outputs a warning from a warning output unit when both do not match as a collation result collated by the driving pattern collating unit. In the in-vehicle navigation device according to claim 1,
The in-vehicle navigation device characterized in that the control means controls the behavior of the vehicle when both do not match as the collation result collated by the driving pattern collating means. In the in-vehicle navigation device according to claim 1 or 2,
The in-vehicle navigation device characterized in that the control means performs a notifying operation toward the outside of the vehicle when both do not match as a collation result collated by the driving pattern collating means. In the in-vehicle navigation device according to any one of claims 1 to 3,
Comprising a communication means for communicating with an external device through a communication line;
The control means causes the communication means to transmit a notification signal from the communication means to the external device through the communication line when both do not match as a matching result collated by the driving pattern matching means. . In the in-vehicle navigation device according to any one of claims 1 to 4,
The use facility specifying means determines whether or not the use facility specifying means determines whether or not to match the check operation pattern specified by the check operation pattern specifying means and the current operation pattern acquired by the current operation pattern acquisition means. An in-vehicle navigation device characterized in that it can be changed according to the contents of the specified use facility. In the in-vehicle navigation device according to any one of claims 1 to 5,
The control means has a past driving pattern stored in the past driving pattern storage means that stores the current driving pattern acquired by the current driving pattern acquiring means when the two match as the matching result checked by the driving pattern matching means. A vehicle-mounted navigation device characterized in that the past driving pattern is updated by reflecting it on the vehicle. In the in-vehicle navigation device according to any one of claims 1 to 6,
The in-vehicle navigation device, wherein the past driving pattern is a characteristic of an acceleration pattern for each correspondence relationship between a road type and the number of lanes / road width. In the in-vehicle navigation device according to any one of claims 1 to 6,
The vehicle-mounted navigation device, wherein the past driving pattern is a characteristic of a deceleration pattern when stopping at an intersection or entering a curve. In the in-vehicle navigation device according to any one of claims 1 to 6,
The in-vehicle navigation device characterized in that the past driving pattern is a characteristic of a turning pattern in a right turn or a left turn.

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