JP2011238130A - Driving support apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving support apparatus that supports the driving operation in accordance with actual driver's health condition.SOLUTION: There are differences in the influence on driving operation, worst condition of a disease, a period to the worst condition or the like, depending on the medical history of a driver. An ECU 20 detects health condition of the driver of a vehicle to support the driving operation of the driver, according to the detected health condition. The ECU 20 detects the driver's health condition on the basis of the medical history of the driver, thereby achieving driving support in accordance with actual driver's health condition.

Description

  The present invention relates to a driving support device, and more particularly to a driving support device that supports driving by a driver according to the health condition of the driver.

  In order to cope with an aging society, there is an increasing demand for assisting drivers in driving according to the health conditions of drivers with various diseases. For example, Patent Document 1 discloses a health management support system that confirms a driver's seating based on a signal from a pressure sensor and confirms whether the driver is in a resting state based on a heart rate or the like. The system of Patent Document 1 determines a health condition based on physical information such as a measured heart rate. The system of Patent Literature 1 determines the activity status based on the acquired activity status information. The system of Patent Literature 1 selects appropriate advice for a driver or the like based on a health condition determination result and an activity state determination result. In the system of Patent Document 1, the selected advice is displayed on a display unit or output by voice.

JP 2008-234209 A

  However, even if the driver's health condition is the same heart rate or the like, it differs from driver to driver. For example, some drivers are capable of normal driving even if their heart rate is higher than average. On the other hand, there are some drivers who cannot operate normally even with an average heart rate. In the technique as described above, the health condition of the driver is uniformly detected based on the measured physiological state of the driver, and driving assistance based on the detected health condition is performed. Therefore, depending on the driver, there is a possibility that unnecessary driving assistance may be provided, or conversely, necessary driving assistance may not be provided, and improvement is desired.

  The present invention has been made in consideration of such a situation, and an object of the present invention is to provide a driving support device capable of performing driving support according to the actual health condition of the driver.

  The present invention comprises health state detection means for detecting the health condition of the driver of the vehicle, and driving support means for assisting the driver in driving according to the health condition detected by the health condition detection means. The means is a driving support device that detects the health condition of the driver based on the medical history of the driver.

  Depending on the driver's medical history, the influence on driving, the worst state due to illness, the period until reaching the worst state, and the like are different. Therefore, according to this configuration, the health state detection unit detects the health state of the driver of the own vehicle, and the driving support unit supports the driving of the driver according to the health state detected by the state detection unit. The health condition detection means detects the driver's health condition based on the driver's medical history. Thereby, driving assistance according to the actual health condition of the driver can be performed.

  In this case, it is preferable that the health state detection means detects the health state of the driver based on the driver's physiological state.

  Even in a physiological state such as the same pulse, the health state varies depending on the driver's medical history. According to this configuration, the health state detection means detects the driver's health state based on the driver's medical history and physiological state. Thereby, the actual health state of the driver can be detected.

  The health condition detection means predicts the driver's future health condition based on the driver's medical history, and the driving support means determines the driver according to the driver's future health condition predicted by the health condition detection means. It is preferable to determine at least one of the content and the timing to support driving.

  Depending on the medical history of the driver, the worst state due to the disease, the period until the worst state, the way of driving when the worst state occurs, and the like are different. For example, in the case of a disease in which the brain function or the like is reduced as a whole, the muscles relax, and it is considered that the vehicle decelerates while meandering. Alternatively, in the case of a cardiovascular disease, excessive tension is generated in the muscles, so that the vehicle may unexpectedly decelerate, accelerate, and steer. Therefore, in this configuration, the health condition detection means predicts the driver's future health condition based on the driver's medical history. As a result, it is possible to accurately predict the health state that the driver may fall into the future. Further, the driving support means determines at least one of contents and timing for supporting the driving of the driver according to the future health state of the driver predicted by the health state detecting means. Thereby, driving assistance can be performed according to the content and time according to the health condition that the driver may fall into the future.

  In addition, it is preferable that the driving support means determines at least one of contents and timing for supporting the driving of the driver according to a situation where the driver is driving the vehicle.

  Depending on the situation in which the driver is driving the vehicle, driving assistance that causes the vehicle to stop urgently just because the driver's health condition has deteriorated may adversely affect other vehicles in the vicinity. There is sex. Therefore, in this configuration, the driving support means determines at least one of the content and timing for supporting the driving of the driver according to the situation in which the driver is driving the vehicle. Thereby, the driving assistance according to the situation can be performed more.

  Further, it is preferable that the driving support means proposes the start of driving assistance according to the health condition detected by the health condition detecting means, and starts driving assistance when the driver's consent is obtained.

  According to this configuration, the driving support means proposes the start of driving assistance according to the health condition detected by the health condition detecting means, and starts driving assistance when the driver has given consent. As a result, it is possible to provide driving assistance according to the health condition of the driver while respecting the driver's intention and independence.

  In addition, it is preferable that the driving support means supports driving to decelerate the host vehicle according to the health condition detected by the health condition detection means.

  According to this configuration, the driving support means performs driving support for decelerating the host vehicle according to the health condition detected by the health condition detection means. Thereby, since the own vehicle is decelerated according to a driver's health state, safety can be improved.

  According to the driving support apparatus of the present invention, driving support according to the actual state of health of the driver can be performed.

It is a figure which shows the structure of the driving assistance device which concerns on embodiment. It is a flowchart which shows operation | movement of the driving assistance apparatus which concerns on embodiment. It is a table | surface which shows the representative example of the disease with respect to a disease classification | category, the worst state, the period until it reaches the worst state, the driving function inactivity, the seriousness, the tendency for driver erroneous input, the support timing, and the support content. It is a table | surface which shows the assistance timing with respect to a driving | running condition, and the content of assistance.

  Hereinafter, a driving support apparatus according to an embodiment of the present invention will be described with reference to the drawings. The driving support device according to the present embodiment is mounted on a vehicle and is used to support the driving of the driver according to the health condition of the driver. As shown in FIG. 1, the driving support device 10 of this embodiment includes a communication device 11, a biosensor 12, a GPS 13, a radar 14, a running state sensor 15, an operation state sensor 16, a personal authentication device 17, an ECU 20, and a driver state. A history database 30, a display 41, a speaker 42, actuators 43, reaction force actuators 44, and a release switch 45 are provided.

  The communication device 11 is for communicating between the own vehicle and a predetermined medical facility. The communication device 11 communicates with the medical facility by voice and data input of the driver of the own vehicle, and automatically transmits information on the detected health state of the driver to the medical facility.

  The biosensors 12 are for detecting physiological information of the driver of the own vehicle. Specifically, the biosensors 12 detect a driver's pulse, blood pressure, body temperature, amount of sweat, body weight, body fat percentage, brain wave, line-of-sight direction, blood glucose level, and the like.

  A GPS (Global Positioning System) 13 is for positioning the host vehicle. The GPS 13 is used for measuring the position of the host vehicle and grasping the situation such as the shape of the road on which the host vehicle is traveling together with the stored map information. The radar 14 is for detecting objects such as other vehicles existing around the own vehicle. The radar 14 is used for grasping the situation in which the host vehicle is traveling. The traveling state sensor 15 is specifically a vehicle speed sensor, a yaw rate sensor, or the like, and is for detecting in what state the vehicle is physically traveling.

  The operation state sensor 16 is a sensor for detecting the state of the driving operation of the driver. Specifically, the operation state sensor 16 includes a steering angle, a steering force, a steering speed, an accelerator pedal depression amount, an accelerator pedal depression force, an accelerator pedal operation speed, a brake pedal depression amount, a brake pedal depression force, a brake pedal operation speed, and a transmission pedal. The shift lever shift position, transmission shift lever operating force, transmission shift lever operating speed, and the like are detected.

  The personal authentication device 17 is for authenticating each driver of the own vehicle. The personal authentication device 17 authenticates the driver of the own vehicle by biometric authentication such as a password, an authentication card, a fingerprint, a blood vessel, a retina, and an iris.

  The ECU (Electronic Control Unit) 20 is for controlling the operation of the driving support apparatus 10 as described later.

  The driver state history database 30 is a database in which information related to the history of illness of the driver of the vehicle and the history of physiological states detected in the past is stored. Further, as will be described later, the driver state history database 30 stores information for executing driving support at a timing and content corresponding to a driver's health state.

  The display 41 is for assisting the driver's driving by providing information or giving an instruction to the driver of the vehicle by video. The speaker 42 is for assisting the driving of the driver by providing information or giving an instruction by voice to the driver of the own vehicle.

  The actuators 43 are for intervening in the driving of the driver of the own vehicle whose driving function is lowered, and performing operations such as steering, braking, accelerator and transmission. The reaction force actuators 44 are for applying a reaction force to the operation of the steering wheel, brake pedal, accelerator pedal, and shift lever of the transmission of the driver of the own vehicle to guide the driving of the driver.

  The cancel switch 45 is for canceling the execution of the support mode in which the driving support device 10 supports the driving of the driver.

  Hereinafter, operation | movement of the driving assistance device 10 of this embodiment is demonstrated. As shown in FIG. 2, the personal authentication device 17 of the driving support device 10 authenticates the driver (S11). The ECU 20 obtains a history and medical history of physiological states such as a driver's pulse, blood pressure, body temperature, sweating volume, body weight, body fat percentage, brain wave, line-of-sight direction, and blood glucose level from the driver state history database 30 (S12). ). The ECU 20 measures the physiological state of the driver using the biosensors 12 (S13).

  As shown in FIG. 3, in this embodiment, the driver state history database 30 includes a representative example of a disease for each disease classification, an example of the worst state of the disease, a period until the worst state, and a driving function in the case of a disease. The degree of inactivity and severity are stored in association with each other.

  Here, the “driving intention” in the driving function inactivity column is a function for the driver to plan a route along which the vehicle travels. The “attention allocation determination” is a function for appropriately distributing the attention of the driver according to the situation where the driver is facing the vehicle. “Driving operation determination” is a function in which the driver performs steering operation, accelerator pedal operation, brake pedal operation, transmission shift lever operation, and the like with appropriate timing and procedures. The “perceptor” is a function that allows the driver to grasp the situation around the vehicle by sight or hearing. The “operation operation” is a function such as a smooth operation speed, operation force, and operation of limbs for the driver to perform steering operation, accelerator pedal operation, brake pedal operation, transmission shift lever operation, and the like. These driving function items are changed from a brain function to a physical function from “driving intention” to “operation operation”.

  The ECU 20 determines a possible disease classification from the driver state history database 30 based on the history and medical history of the driver's physiological state acquired in S12 and the driver's physiological state measured in S13. Obtain (S14). Similarly, the ECU 20 has a possibility from the driver state history database 30 based on the history and medical history of the driver's physiological state acquired in S12 and the driver's physiological state measured in S13. A certain worst state (S15), the period until the worst state occurs (S16), driving inactivity (S17), and severity (S18) are acquired.

  In this case, the ECU 20 measures the physiological state related to the disease in S13 based on the driver's disease history, and if the physiological state fluctuates beyond a predetermined threshold value, The disease classification related to the disease history can be acquired. For example, when the driver has a history of cardiovascular disease, the ECU 20 mainly measures a physiological state related to the cardiovascular system such as blood pressure and heart rate in S13. When the predetermined threshold value is exceeded, the worst state or the like related to the disease classification “cardiovascular” shown in FIG. 3 can be acquired.

  For example, when the severity is “medium” or less shown in FIG. 3 or when any item of the driving function inactivity is “medium” or less, the ECU 20 displays the display 41 or the speaker. 42, the driver is proposed to shift to the support mode (S19). When the driver does not operate the release switch 45 and accepts the shift to the support mode (S20), the ECU 20 uses the GPS 13, the radar 14, the traveling state sensor 15, and the operation state sensor 16 to drive the host vehicle. The driving situation of the person is detected (S16).

  The ECU 20 determines a driver's erroneous input tendency in each disease classification (S22). As shown in FIG. 3, the driver status history database 30 stores the driver's erroneous input tendency and support contents corresponding to each disease category. For example, in the case of a nervous system disease in which the brain function or the like is reduced as a whole, the muscles relax, and it is considered that the own vehicle decelerates while meandering. In this case, as the contents of support, it is desirable that the frequency of guidance by the display 41 or the like is increased, the actuators 43 support with a strong operating force, and the reaction force by the reaction force actuators 44 is relatively weak. On the other hand, in the case of a cardiovascular disease, excessive tension is generated in the muscles, so that the vehicle may unexpectedly decelerate, accelerate, and steer. In this case, as the support contents, the frequency of guidance by the display 41 or the like is increased, the actuators 43 are supported with a medium operating force, and the reaction force by the reaction force actuators 44 is strengthened to increase the driver's erroneous input. It is desirable to prevent this.

  Further, as shown in FIG. 3, the driver status history database 30 stores support timings corresponding to each disease category. For example, in the case of a cardiovascular disease, the driver loses consciousness instantly, and thus the support timing is desired to be immediate. On the other hand, in the case of respiratory diseases, the time to reach the worst state is relatively long, so the support timing may be when the driver's consciousness actually begins to decline.

  Further, as shown in FIG. 4, the driver status history database 30 stores support timing and support contents corresponding to the driving situation. For example, when the vehicle is traveling on a highway where there is no traffic jam, the driving assistance device 10 is at a short distance if the severity is “low” and the period until the worst state is long. It is desirable to support travel to medical institutions. If the severity is not “low”, it is desirable that the driving support device 10 supports the stop of the vehicle on the road side and transmits a rescue signal by the communication device 11. In addition, when driving on a highway where the vehicle is congested, the driving support device 10 supports the stopping of the vehicle on the roadside regardless of the severity, and the communication device 11 rescues the vehicle. It is desirable to transmit a signal.

  Therefore, the ECU 20 selects from the driver state history database 30 the support timing and the support content corresponding to the disease classification, the driver's erroneous input tendency, and the driving situation (S23). The ECU 20 performs driving support for the selected content. As for the support contents, in principle, when the driving function inactivity exceeds a threshold value and is high, the support contents are such that the host vehicle is decelerated and stopped at a safe place. Alternatively, when the driving function inactivity is relatively low, which is equal to or less than the threshold value, the support content is such that the vehicle travels to a predetermined medical facility. In the driving support, when the driving function inactivity of the driver is relatively high with respect to the driving situation, information is presented and guided by the display 41 and the speaker 42. In addition, when the driver's driving function is relatively low with respect to the driving situation, the driving assistance is performed by the actuator 43 in the driver's driving or by the reaction force actuator 44.

  The ECU 20 supports driving by the driver based on the determined support content and support timing as described above (S24). In this case, when the release switch 45 is operated by the driver, the ECU 20 permits the support mode to be released and ends the support mode.

  In this embodiment, in principle, the driving assistance device 10 provides driving assistance to the driver, but for medical judgment, the communication device 11 transmits information to a predetermined medical institution, and the medical institution instructs And follow the instruction (S25). Therefore, even if the driver operates the release switch 45, if the release of the support mode is not desirable according to the judgment of the medical institution, the support mode is continued without releasing the support mode.

  Depending on the driver's medical history, the influence on driving, the worst state due to illness, the period until reaching the worst state, and the like are different. Therefore, according to the present embodiment, the ECU 20 detects the health condition of the driver of the own vehicle, and assists the driver in driving according to the detected health condition. The ECU 20 detects the health condition of the driver based on the driver's medical history. Thereby, driving assistance according to the actual health condition of the driver can be performed.

  Here, even in the physiological state such as the same pulse, the health state varies depending on the medical history of the driver. According to the present embodiment, the ECU 20 detects the health state of the driver based on the driver's medical history and physiological state. Thereby, the actual health state of the driver can be detected.

  Further, the worst state due to the disease, the period until reaching the worst state, the manner of driving when falling into the worst state, and the like differ depending on the medical history of the driver. For example, in the case of a disease in which the brain function or the like is reduced as a whole, the muscles relax, and it is considered that the vehicle decelerates while meandering. Alternatively, in the case of a cardiovascular disease, excessive tension is generated in the muscles, so that the vehicle may unexpectedly decelerate, accelerate, and steer. Therefore, in the present embodiment, the ECU 20 predicts the future health state of the driver based on the driver's medical history. As a result, it is possible to accurately predict the health state that the driver may fall into the future. In addition, the ECU 20 determines at least one of contents and timing for supporting the driving of the driver according to the predicted future health state of the driver. Thereby, driving assistance can be performed according to the content and time according to the health condition that the driver may fall into the future.

  Also, depending on the situation in which the driver is driving the vehicle, driving assistance that causes the vehicle to stop urgently just because the driver's health condition has deteriorated can adversely affect other surrounding vehicles. There is a possibility to give. Therefore, in the present embodiment, the ECU 20 determines the content and timing for assisting the driver's driving according to the situation in which the driver is driving the vehicle. Thereby, the driving assistance according to the situation can be performed more.

  Further, according to the present embodiment, the ECU 20 proposes the start of driving assistance according to the detected health condition, and starts driving assistance when the driver's consent is obtained. As a result, it is possible to provide driving assistance according to the health condition of the driver while respecting the driver's intention and independence.

  In addition, according to the present embodiment, the ECU 20 assists driving that decelerates the host vehicle according to the detected health condition. Thereby, since the own vehicle is decelerated according to a driver's health state, safety can be improved.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Driving assistance device, 11 ... Communication apparatus, 12 ... Biosensors, 13 ... GPS, 14 ... Radar, 15 ... Running state sensor, 16 ... Operation state sensor, 17 ... Personal authentication device, 20 ... ECU, 30 ... Driver State history database, 41 ... display, 42 ... speaker, 43 ... actuators, 44 ... reaction force actuators, 45 ... release switch.

Claims (6)

Health condition detection means for detecting the health condition of the driver of the vehicle;
Driving support means for supporting driving of the driver according to the health condition detected by the health condition detection means;
With
The health condition detecting means is a driving support device that detects the health condition of the driver based on a medical history of the driver.   The driving support device according to claim 1, wherein the health state detection unit detects the health state of the driver based on a physiological state of the driver. The health condition detection means predicts the future health condition of the driver based on the medical history of the driver;
The driving support means determines at least one of contents and timing to support driving of the driver according to the future health condition of the driver predicted by the health condition detection means. The driving support device according to 1.   The driving support means determines at least one of contents and timing for supporting driving of the driver according to a situation in which the driver is driving the host vehicle. The driving support device according to item.   The driving support means suggests the start of driving assistance according to the health condition detected by the health condition detecting means, and starts driving assistance when the driver gives consent. The driving support device according to any one of 4.   The driving support device according to any one of claims 1 to 5, wherein the driving support means supports driving to decelerate the host vehicle according to the health condition detected by the health condition detection means.

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